virtualx-engine/editor/plugins/canvas_item_editor_plugin.cpp

/*************************************************************************/
/*  canvas_item_editor_plugin.cpp                                        */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
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/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "canvas_item_editor_plugin.h"

#include "editor/editor_node.h"
#include "editor/editor_settings.h"
#include "editor/plugins/animation_player_editor_plugin.h"
#include "editor/plugins/script_editor_plugin.h"
#include "editor/script_editor_debugger.h"
#include "os/input.h"
#include "os/keyboard.h"
#include "print_string.h"
#include "project_settings.h"
#include "scene/2d/light_2d.h"
#include "scene/2d/particles_2d.h"
#include "scene/2d/polygon_2d.h"
#include "scene/2d/screen_button.h"
#include "scene/2d/skeleton_2d.h"
#include "scene/2d/sprite.h"
#include "scene/gui/grid_container.h"
#include "scene/gui/nine_patch_rect.h"
#include "scene/main/canvas_layer.h"
#include "scene/main/viewport.h"
#include "scene/resources/packed_scene.h"

#define MIN_ZOOM 0.01
#define MAX_ZOOM 100

#define RULER_WIDTH 15 * EDSCALE

class SnapDialog : public ConfirmationDialog {

	GDCLASS(SnapDialog, ConfirmationDialog);

	friend class CanvasItemEditor;

	SpinBox *grid_offset_x;
	SpinBox *grid_offset_y;
	SpinBox *grid_step_x;
	SpinBox *grid_step_y;
	SpinBox *rotation_offset;
	SpinBox *rotation_step;

public:
	SnapDialog() :
			ConfirmationDialog() {
		const int SPIN_BOX_GRID_RANGE = 256;
		const int SPIN_BOX_ROTATION_RANGE = 360;
		Label *label;
		VBoxContainer *container;
		GridContainer *child_container;

		set_title(TTR("Configure Snap"));
		get_ok()->set_text(TTR("Close"));

		container = memnew(VBoxContainer);
		add_child(container);
		//set_child_rect(container);

		child_container = memnew(GridContainer);
		child_container->set_columns(3);
		container->add_child(child_container);

		label = memnew(Label);
		label->set_text(TTR("Grid Offset:"));
		child_container->add_child(label);
		label->set_h_size_flags(SIZE_EXPAND_FILL);

		grid_offset_x = memnew(SpinBox);
		grid_offset_x->set_min(-SPIN_BOX_GRID_RANGE);
		grid_offset_x->set_max(SPIN_BOX_GRID_RANGE);
		grid_offset_x->set_suffix("px");
		child_container->add_child(grid_offset_x);

		grid_offset_y = memnew(SpinBox);
		grid_offset_y->set_min(-SPIN_BOX_GRID_RANGE);
		grid_offset_y->set_max(SPIN_BOX_GRID_RANGE);
		grid_offset_y->set_suffix("px");
		child_container->add_child(grid_offset_y);

		label = memnew(Label);
		label->set_text(TTR("Grid Step:"));
		child_container->add_child(label);
		label->set_h_size_flags(SIZE_EXPAND_FILL);

		grid_step_x = memnew(SpinBox);
		grid_step_x->set_min(0.01);
		grid_step_x->set_max(SPIN_BOX_GRID_RANGE);
		grid_step_x->set_suffix("px");
		child_container->add_child(grid_step_x);

		grid_step_y = memnew(SpinBox);
		grid_step_y->set_min(0.01);
		grid_step_y->set_max(SPIN_BOX_GRID_RANGE);
		grid_step_y->set_suffix("px");
		child_container->add_child(grid_step_y);

		container->add_child(memnew(HSeparator));

		child_container = memnew(GridContainer);
		child_container->set_columns(2);
		container->add_child(child_container);

		label = memnew(Label);
		label->set_text(TTR("Rotation Offset:"));
		child_container->add_child(label);
		label->set_h_size_flags(SIZE_EXPAND_FILL);

		rotation_offset = memnew(SpinBox);
		rotation_offset->set_min(-SPIN_BOX_ROTATION_RANGE);
		rotation_offset->set_max(SPIN_BOX_ROTATION_RANGE);
		rotation_offset->set_suffix("deg");
		child_container->add_child(rotation_offset);

		label = memnew(Label);
		label->set_text(TTR("Rotation Step:"));
		child_container->add_child(label);
		label->set_h_size_flags(SIZE_EXPAND_FILL);

		rotation_step = memnew(SpinBox);
		rotation_step->set_min(-SPIN_BOX_ROTATION_RANGE);
		rotation_step->set_max(SPIN_BOX_ROTATION_RANGE);
		rotation_step->set_suffix("deg");
		child_container->add_child(rotation_step);
	}

	void set_fields(const Point2 p_grid_offset, const Point2 p_grid_step, const float p_rotation_offset, const float p_rotation_step) {
		grid_offset_x->set_value(p_grid_offset.x);
		grid_offset_y->set_value(p_grid_offset.y);
		grid_step_x->set_value(p_grid_step.x);
		grid_step_y->set_value(p_grid_step.y);
		rotation_offset->set_value(p_rotation_offset * (180 / Math_PI));
		rotation_step->set_value(p_rotation_step * (180 / Math_PI));
	}

	void get_fields(Point2 &p_grid_offset, Point2 &p_grid_step, float &p_rotation_offset, float &p_rotation_step) {
		p_grid_offset = Point2(grid_offset_x->get_value(), grid_offset_y->get_value());
		p_grid_step = Point2(grid_step_x->get_value(), grid_step_y->get_value());
		p_rotation_offset = rotation_offset->get_value() / (180 / Math_PI);
		p_rotation_step = rotation_step->get_value() / (180 / Math_PI);
	}
};

void CanvasItemEditor::_snap_if_closer_float(float p_value, float p_target_snap, float &r_current_snap, bool &r_snapped, float p_radius) {
	float radius = p_radius / zoom;
	float dist = Math::abs(p_value - p_target_snap);
	if ((p_radius < 0 || dist < radius) && (!r_snapped || dist < Math::abs(r_current_snap - p_value))) {
		r_current_snap = p_target_snap;
		r_snapped = true;
	}
}

void CanvasItemEditor::_snap_if_closer_point(Point2 p_value, Point2 p_target_snap, Point2 &r_current_snap, bool (&r_snapped)[2], real_t rotation, float p_radius) {
	Transform2D rot_trans = Transform2D(rotation, Point2());
	p_value = rot_trans.inverse().xform(p_value);
	p_target_snap = rot_trans.inverse().xform(p_target_snap);
	r_current_snap = rot_trans.inverse().xform(r_current_snap);

	_snap_if_closer_float(p_value.x, p_target_snap.x, r_current_snap.x, r_snapped[0], p_radius);
	_snap_if_closer_float(p_value.y, p_target_snap.y, r_current_snap.y, r_snapped[1], p_radius);

	r_current_snap = rot_trans.xform(r_current_snap);
}

void CanvasItemEditor::_snap_other_nodes(Point2 p_value, Point2 &r_current_snap, bool (&r_snapped)[2], const Node *p_current, const CanvasItem *p_to_snap) {
	const CanvasItem *canvas_item = Object::cast_to<CanvasItem>(p_current);
	if (canvas_item && (!p_to_snap || p_current != p_to_snap)) {
		Transform2D ci_transform = canvas_item->get_global_transform_with_canvas();
		Transform2D to_snap_transform = p_to_snap ? p_to_snap->get_global_transform_with_canvas() : Transform2D();
		if (fmod(ci_transform.get_rotation() - to_snap_transform.get_rotation(), (real_t)360.0) == 0.0) {
			if (canvas_item->_edit_use_rect()) {
				Point2 begin = ci_transform.xform(canvas_item->_edit_get_rect().get_position());
				Point2 end = ci_transform.xform(canvas_item->_edit_get_rect().get_position() + canvas_item->_edit_get_rect().get_size());
				_snap_if_closer_point(p_value, begin, r_current_snap, r_snapped, ci_transform.get_rotation());
				_snap_if_closer_point(p_value, end, r_current_snap, r_snapped, ci_transform.get_rotation());
			} else {
				Point2 position = ci_transform.xform(Point2());
				_snap_if_closer_point(p_value, position, r_current_snap, r_snapped, ci_transform.get_rotation());
			}
		}
	}
	for (int i = 0; i < p_current->get_child_count(); i++) {
		_snap_other_nodes(p_value, r_current_snap, r_snapped, p_current->get_child(i), p_to_snap);
	}
}

Point2 CanvasItemEditor::snap_point(Point2 p_target, unsigned int p_modes, const CanvasItem *p_canvas_item, unsigned int p_forced_modes) {
	bool snapped[2] = { false, false };
	bool is_snap_active = snap_active ^ Input::get_singleton()->is_key_pressed(KEY_CONTROL);

	// Smart snap using the canvas position
	Vector2 output = p_target;
	real_t rotation = 0.0;

	if (p_canvas_item) {
		rotation = p_canvas_item->get_global_transform_with_canvas().get_rotation();

		// Parent sides and center
		if ((is_snap_active && snap_node_parent && (p_modes & SNAP_NODE_PARENT)) || (p_forced_modes & SNAP_NODE_PARENT)) {
			if (const Control *c = Object::cast_to<Control>(p_canvas_item)) {
				Point2 begin = p_canvas_item->get_global_transform_with_canvas().xform(_anchor_to_position(c, Point2(0, 0)));
				Point2 end = p_canvas_item->get_global_transform_with_canvas().xform(_anchor_to_position(c, Point2(1, 1)));
				_snap_if_closer_point(p_target, begin, output, snapped, rotation);
				_snap_if_closer_point(p_target, (begin + end) / 2.0, output, snapped, rotation);
				_snap_if_closer_point(p_target, end, output, snapped, rotation);
			} else if (const CanvasItem *parent_ci = Object::cast_to<CanvasItem>(p_canvas_item->get_parent())) {
				if (parent_ci->_edit_use_rect()) {
					Point2 begin = p_canvas_item->get_transform().affine_inverse().xform(parent_ci->_edit_get_rect().get_position());
					Point2 end = p_canvas_item->get_transform().affine_inverse().xform(parent_ci->_edit_get_rect().get_position() + parent_ci->_edit_get_rect().get_size());
					_snap_if_closer_point(p_target, begin, output, snapped, rotation);
					_snap_if_closer_point(p_target, (begin + end) / 2.0, output, snapped, rotation);
					_snap_if_closer_point(p_target, end, output, snapped, rotation);
				} else {
					Point2 position = p_canvas_item->get_transform().affine_inverse().xform(Point2());
					_snap_if_closer_point(p_target, position, output, snapped, rotation);
				}
			}
		}

		// Self anchors
		if ((is_snap_active && snap_node_anchors && (p_modes & SNAP_NODE_ANCHORS)) || (p_forced_modes & SNAP_NODE_ANCHORS)) {
			if (const Control *c = Object::cast_to<Control>(p_canvas_item)) {
				Point2 begin = p_canvas_item->get_global_transform_with_canvas().xform(_anchor_to_position(c, Point2(c->get_anchor(MARGIN_LEFT), c->get_anchor(MARGIN_TOP))));
				Point2 end = p_canvas_item->get_global_transform_with_canvas().xform(_anchor_to_position(c, Point2(c->get_anchor(MARGIN_RIGHT), c->get_anchor(MARGIN_BOTTOM))));
				_snap_if_closer_point(p_target, begin, output, snapped, rotation);
				_snap_if_closer_point(p_target, end, output, snapped, rotation);
			}
		}

		// Self sides
		if ((is_snap_active && snap_node_sides && (p_modes & SNAP_NODE_SIDES)) || (p_forced_modes & SNAP_NODE_SIDES)) {
			if (p_canvas_item->_edit_use_rect()) {
				Point2 begin = p_canvas_item->get_global_transform_with_canvas().xform(p_canvas_item->_edit_get_rect().get_position());
				Point2 end = p_canvas_item->get_global_transform_with_canvas().xform(p_canvas_item->_edit_get_rect().get_position() + p_canvas_item->_edit_get_rect().get_size());
				_snap_if_closer_point(p_target, begin, output, snapped, rotation);
				_snap_if_closer_point(p_target, end, output, snapped, rotation);
			}
		}

		// Self center
		if ((is_snap_active && snap_node_center && (p_modes & SNAP_NODE_CENTER)) || (p_forced_modes & SNAP_NODE_CENTER)) {
			if (p_canvas_item->_edit_use_rect()) {
				Point2 center = p_canvas_item->get_global_transform_with_canvas().xform(p_canvas_item->_edit_get_rect().get_position() + p_canvas_item->_edit_get_rect().get_size() / 2.0);
				_snap_if_closer_point(p_target, center, output, snapped, rotation);
			} else {
				Point2 position = p_canvas_item->get_global_transform_with_canvas().xform(Point2());
				_snap_if_closer_point(p_target, position, output, snapped, rotation);
			}
		}
	}

	// Other nodes sides
	if ((is_snap_active && snap_other_nodes && (p_modes & SNAP_OTHER_NODES)) || (p_forced_modes & SNAP_OTHER_NODES)) {
		_snap_other_nodes(p_target, output, snapped, get_tree()->get_edited_scene_root(), p_canvas_item);
	}

	if (((is_snap_active && snap_guides && (p_modes & SNAP_GUIDES)) || (p_forced_modes & SNAP_GUIDES)) && fmod(rotation, (real_t)360.0) == 0.0) {
		// Guides
		if (EditorNode::get_singleton()->get_edited_scene() && EditorNode::get_singleton()->get_edited_scene()->has_meta("_edit_vertical_guides_")) {
			Array vguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_vertical_guides_");
			for (int i = 0; i < vguides.size(); i++) {
				_snap_if_closer_float(p_target.x, vguides[i], output.x, snapped[0]);
			}
		}

		if (EditorNode::get_singleton()->get_edited_scene() && EditorNode::get_singleton()->get_edited_scene()->has_meta("_edit_horizontal_guides_")) {
			Array hguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_horizontal_guides_");
			for (int i = 0; i < hguides.size(); i++) {
				_snap_if_closer_float(p_target.y, hguides[i], output.y, snapped[1]);
			}
		}
	}

	if (((is_snap_active && snap_grid && (p_modes & SNAP_GRID)) || (p_forced_modes & SNAP_GRID)) && fmod(rotation, (real_t)360.0) == 0.0) {
		// Grid
		Point2 offset = grid_offset;
		if (snap_relative) {
			List<CanvasItem *> selection = _get_edited_canvas_items();
			if (selection.size() == 1 && Object::cast_to<Node2D>(selection[0])) {
				offset = Object::cast_to<Node2D>(selection[0])->get_global_position();
			} else if (selection.size() > 0) {
				offset = _get_encompassing_rect_from_list(selection).position;
			}
		}
		Point2 grid_output;
		grid_output.x = Math::stepify(p_target.x - offset.x, grid_step.x * Math::pow(2.0, grid_step_multiplier)) + offset.x;
		grid_output.y = Math::stepify(p_target.y - offset.y, grid_step.y * Math::pow(2.0, grid_step_multiplier)) + offset.y;
		_snap_if_closer_point(p_target, grid_output, output, snapped, 0.0, -1.0);
	}

	if (((snap_pixel && (p_modes & SNAP_PIXEL)) || (p_forced_modes & SNAP_PIXEL)) && rotation == 0.0) {
		// Pixel
		output = output.snapped(Size2(1, 1));
	}

	return output;
}

float CanvasItemEditor::snap_angle(float p_target, float p_start) const {
	return (((snap_active || snap_rotation) ^ Input::get_singleton()->is_key_pressed(KEY_CONTROL)) && snap_rotation_step != 0) ? Math::stepify(p_target - snap_rotation_offset, snap_rotation_step) + snap_rotation_offset : p_target;
}

void CanvasItemEditor::_unhandled_key_input(const Ref<InputEvent> &p_ev) {

	Ref<InputEventKey> k = p_ev;

	if (!is_visible_in_tree() || get_viewport()->gui_has_modal_stack())
		return;

	if (k->get_control())
		return;

	if (k->is_pressed() && !k->is_echo()) {
		if ((snap_grid || show_grid) && multiply_grid_step_shortcut.is_valid() && multiply_grid_step_shortcut->is_shortcut(p_ev)) {
			// Multiply the grid size
			grid_step_multiplier = MIN(grid_step_multiplier + 1, 12);
			viewport->update();
		} else if ((snap_grid || show_grid) && divide_grid_step_shortcut.is_valid() && divide_grid_step_shortcut->is_shortcut(p_ev)) {
			// Divide the grid size
			Point2 new_grid_step = grid_step * Math::pow(2.0, grid_step_multiplier - 1);
			if (new_grid_step.x >= 1.0 && new_grid_step.y >= 1.0)
				grid_step_multiplier--;
			viewport->update();
		}
	}
}

Object *CanvasItemEditor::_get_editor_data(Object *p_what) {

	CanvasItem *ci = Object::cast_to<CanvasItem>(p_what);
	if (!ci)
		return NULL;

	return memnew(CanvasItemEditorSelectedItem);
}

void CanvasItemEditor::_keying_changed() {

	if (AnimationPlayerEditor::singleton->get_track_editor()->is_visible_in_tree())
		animation_hb->show();
	else
		animation_hb->hide();
}

Rect2 CanvasItemEditor::_get_encompassing_rect_from_list(List<CanvasItem *> p_list) {
	ERR_FAIL_COND_V(p_list.empty(), Rect2());

	// Handles the first element
	CanvasItem *canvas_item = p_list.front()->get();
	Rect2 rect;
	if (canvas_item->_edit_use_rect()) {
		rect = Rect2(canvas_item->get_global_transform_with_canvas().xform(canvas_item->_edit_get_rect().position + canvas_item->_edit_get_rect().size / 2), Size2());
	} else {
		rect = Rect2(canvas_item->get_global_transform_with_canvas().xform(Point2()), Size2());
	}

	// Expand with the other ones
	for (List<CanvasItem *>::Element *E = p_list.front(); E; E = E->next()) {
		CanvasItem *canvas_item = E->get();
		Transform2D xform = canvas_item->get_global_transform_with_canvas();
		if (canvas_item->_edit_use_rect()) {
			Rect2 current_rect = canvas_item->_edit_get_rect();

			rect.expand_to(xform.xform(current_rect.position));
			rect.expand_to(xform.xform(current_rect.position + Vector2(current_rect.size.x, 0)));
			rect.expand_to(xform.xform(current_rect.position + current_rect.size));
			rect.expand_to(xform.xform(current_rect.position + Vector2(0, current_rect.size.y)));
		} else {
			rect.expand_to(xform.xform(Point2()));
		}
	}

	return rect;
}

void CanvasItemEditor::_expand_encompassing_rect_using_children(Rect2 &r_rect, const Node *p_node, bool &r_first, const Transform2D &p_parent_xform, const Transform2D &p_canvas_xform) {
	if (!p_node)
		return;
	if (Object::cast_to<Viewport>(p_node))
		return;

	const CanvasItem *canvas_item = Object::cast_to<CanvasItem>(p_node);

	/*bool inherited = p_node != get_tree()->get_edited_scene_root() && p_node->get_filename() != "";
	bool editable = !inherited || EditorNode::get_singleton()->get_edited_scene()->is_editable_instance(p_node);
	bool lock_children = p_node->has_meta("_edit_group_") && p_node->get_meta("_edit_group_");

	if (!lock_children && editable) {}*/

	for (int i = p_node->get_child_count() - 1; i >= 0; i--) {
		if (canvas_item && !canvas_item->is_set_as_toplevel()) {
			_expand_encompassing_rect_using_children(r_rect, p_node->get_child(i), r_first, p_parent_xform * canvas_item->get_transform(), p_canvas_xform);
		} else {
			const CanvasLayer *canvas_layer = Object::cast_to<CanvasLayer>(p_node);
			_expand_encompassing_rect_using_children(r_rect, p_node->get_child(i), r_first, Transform2D(), canvas_layer ? canvas_layer->get_transform() : p_canvas_xform);
		}
	}

	if (canvas_item && canvas_item->is_visible_in_tree() && !canvas_item->has_meta("_edit_lock_")) {
		Transform2D xform = p_parent_xform * p_canvas_xform * canvas_item->get_transform();
		if (canvas_item->_edit_use_rect()) {
			Rect2 rect = canvas_item->_edit_get_rect();
			if (r_first) {
				r_rect = Rect2(xform.xform(rect.position + rect.size / 2), Size2());
				r_first = false;
			}
			if (r_rect.size != Size2()) {
				r_rect.expand_to(xform.xform(rect.position));
				r_rect.expand_to(xform.xform(rect.position + Point2(rect.size.x, 0)));
				r_rect.expand_to(xform.xform(rect.position + Point2(0, rect.size.y)));
				r_rect.expand_to(xform.xform(rect.position + rect.size));
			}
		} else {
			if (r_first) {
				r_rect = Rect2(xform.xform(Point2()), Size2());
				r_first = false;
			} else {
				r_rect.expand_to(xform.xform(Point2()));
			}
		}
	}
}

Rect2 CanvasItemEditor::_get_encompassing_rect(const Node *p_node) {
	Rect2 rect;
	bool first = true;
	_expand_encompassing_rect_using_children(rect, p_node, first);

	return rect;
}

void CanvasItemEditor::_find_canvas_items_at_pos(const Point2 &p_pos, Node *p_node, Vector<_SelectResult> &r_items, int p_limit, const Transform2D &p_parent_xform, const Transform2D &p_canvas_xform) {
	if (!p_node)
		return;
	if (Object::cast_to<Viewport>(p_node))
		return;

	const real_t grab_distance = EDITOR_DEF("editors/poly_editor/point_grab_radius", 8);
	CanvasItem *canvas_item = Object::cast_to<CanvasItem>(p_node);

	for (int i = p_node->get_child_count() - 1; i >= 0; i--) {
		if (canvas_item && !canvas_item->is_set_as_toplevel()) {
			_find_canvas_items_at_pos(p_pos, p_node->get_child(i), r_items, p_limit, p_parent_xform * canvas_item->get_transform(), p_canvas_xform);
		} else {
			CanvasLayer *cl = Object::cast_to<CanvasLayer>(p_node);
			_find_canvas_items_at_pos(p_pos, p_node->get_child(i), r_items, p_limit, Transform2D(), cl ? cl->get_transform() : p_canvas_xform);
		}
		if (p_limit != 0 && r_items.size() >= p_limit)
			return;
	}

	if (canvas_item && canvas_item->is_visible_in_tree()) {
		Transform2D xform = (p_parent_xform * p_canvas_xform * canvas_item->get_transform()).affine_inverse();
		const real_t local_grab_distance = xform.basis_xform(Vector2(grab_distance, 0)).length();
		if (canvas_item->_edit_is_selected_on_click(xform.xform(p_pos), local_grab_distance)) {
			Node2D *node = Object::cast_to<Node2D>(canvas_item);

			_SelectResult res;
			res.item = canvas_item;
			res.z_index = node ? node->get_z_index() : 0;
			res.has_z = node;
			r_items.push_back(res);
		}
	}

	return;
}

void CanvasItemEditor::_get_canvas_items_at_pos(const Point2 &p_pos, Vector<_SelectResult> &r_items, int p_limit) {

	Node *scene = editor->get_edited_scene();

	_find_canvas_items_at_pos(p_pos, scene, r_items, p_limit);

	//Remove invalid results
	for (int i = 0; i < r_items.size(); i++) {
		Node *node = r_items[i].item;

		// Make sure the selected node is in the current scene, or editable
		while (node && node != get_tree()->get_edited_scene_root() && node->get_owner() != scene && !scene->is_editable_instance(node->get_owner())) {
			node = node->get_parent();
		};

		// Replace the node by the group if grouped
		CanvasItem *canvas_item = Object::cast_to<CanvasItem>(node);
		while (node && node != scene->get_parent()) {
			CanvasItem *canvas_item_tmp = Object::cast_to<CanvasItem>(node);
			if (canvas_item_tmp && node->has_meta("_edit_group_")) {
				canvas_item = canvas_item_tmp;
			}
			node = node->get_parent();
		}

		// Check if the canvas item is already in the list (for groups or scenes)
		bool duplicate = false;
		for (int j = 0; j < i; j++) {
			if (r_items[j].item == canvas_item) {
				duplicate = true;
				break;
			}
		}

		//Remove the item if invalid
		if (!canvas_item || duplicate || (canvas_item != scene && canvas_item->get_owner() != scene && !scene->is_editable_instance(canvas_item->get_owner())) || (canvas_item->has_meta("_edit_lock_") && canvas_item->get_meta("_edit_lock_"))) {
			r_items.remove(i);
			i--;
		} else {
			r_items[i].item = canvas_item;
		}
	}
}

void CanvasItemEditor::_get_bones_at_pos(const Point2 &p_pos, Vector<_SelectResult> &r_items) {
	Point2 screen_pos = transform.xform(p_pos);

	for (Map<BoneKey, BoneList>::Element *E = bone_list.front(); E; E = E->next()) {
		Node2D *from_node = Object::cast_to<Node2D>(ObjectDB::get_instance(E->key().from));
		Node2D *to_node = Object::cast_to<Node2D>(ObjectDB::get_instance(E->key().to));

		Vector<Vector2> bone_shape;
		if (!_get_bone_shape(&bone_shape, NULL, E))
			continue;

		// Check if the point is inside the Polygon2D
		if (Geometry::is_point_in_polygon(screen_pos, bone_shape)) {
			// Check if the item is already in the list
			bool duplicate = false;
			for (int i = 0; i < r_items.size(); i++) {
				if (r_items[i].item == from_node) {
					duplicate = true;
					break;
				}
			}
			if (duplicate)
				continue;

			// Else, add it
			_SelectResult res;
			res.item = from_node;
			res.z_index = from_node ? from_node->get_z_index() : 0;
			res.has_z = from_node;
			r_items.push_back(res);
		}
	}
}

bool CanvasItemEditor::_get_bone_shape(Vector<Vector2> *shape, Vector<Vector2> *outline_shape, Map<BoneKey, BoneList>::Element *bone) {
	int bone_width = EditorSettings::get_singleton()->get("editors/2d/bone_width");
	int bone_outline_width = EditorSettings::get_singleton()->get("editors/2d/bone_outline_size");

	Node2D *from_node = Object::cast_to<Node2D>(ObjectDB::get_instance(bone->key().from));
	Node2D *to_node = Object::cast_to<Node2D>(ObjectDB::get_instance(bone->key().to));

	if (!from_node->is_inside_tree())
		return false; //may have been removed
	if (!from_node)
		return false;

	if (!to_node && bone->get().length == 0)
		return false;

	Vector2 from = transform.xform(from_node->get_global_position());
	Vector2 to;

	if (to_node)
		to = transform.xform(to_node->get_global_position());
	else
		to = transform.xform(from_node->get_global_transform().xform(Vector2(bone->get().length, 0)));

	Vector2 rel = to - from;
	Vector2 relt = rel.tangent().normalized() * bone_width;
	Vector2 reln = rel.normalized();
	Vector2 reltn = relt.normalized();

	if (shape) {
		shape->clear();
		shape->push_back(from);
		shape->push_back(from + rel * 0.2 + relt);
		shape->push_back(to);
		shape->push_back(from + rel * 0.2 - relt);
	}

	if (outline_shape) {
		outline_shape->clear();
		outline_shape->push_back(from + (-reln - reltn) * bone_outline_width);
		outline_shape->push_back(from + (-reln + reltn) * bone_outline_width);
		outline_shape->push_back(from + rel * 0.2 + relt + reltn * bone_outline_width);
		outline_shape->push_back(to + (reln + reltn) * bone_outline_width);
		outline_shape->push_back(to + (reln - reltn) * bone_outline_width);
		outline_shape->push_back(from + rel * 0.2 - relt - reltn * bone_outline_width);
	}
	return true;
}

void CanvasItemEditor::_find_canvas_items_in_rect(const Rect2 &p_rect, Node *p_node, List<CanvasItem *> *r_items, const Transform2D &p_parent_xform, const Transform2D &p_canvas_xform) {
	if (!p_node)
		return;
	if (Object::cast_to<Viewport>(p_node))
		return;

	CanvasItem *canvas_item = Object::cast_to<CanvasItem>(p_node);
	Node *scene = editor->get_edited_scene();

	bool editable = p_node == scene || p_node->get_owner() == scene || scene->is_editable_instance(p_node->get_owner());
	bool lock_children = p_node->has_meta("_edit_group_") && p_node->get_meta("_edit_group_");
	bool locked = p_node->has_meta("_edit_lock_") && p_node->get_meta("_edit_lock_");

	if (!lock_children || !editable) {
		for (int i = p_node->get_child_count() - 1; i >= 0; i--) {
			if (canvas_item && !canvas_item->is_set_as_toplevel()) {
				_find_canvas_items_in_rect(p_rect, p_node->get_child(i), r_items, p_parent_xform * canvas_item->get_transform(), p_canvas_xform);
			} else {
				CanvasLayer *canvas_layer = Object::cast_to<CanvasLayer>(p_node);
				_find_canvas_items_in_rect(p_rect, p_node->get_child(i), r_items, Transform2D(), canvas_layer ? canvas_layer->get_transform() : p_canvas_xform);
			}
		}
	}

	if (canvas_item && canvas_item->is_visible_in_tree() && !locked && editable) {
		Transform2D xform = p_parent_xform * p_canvas_xform * canvas_item->get_transform();

		if (canvas_item->_edit_use_rect()) {
			Rect2 rect = canvas_item->_edit_get_rect();
			if (p_rect.has_point(xform.xform(rect.position)) &&
					p_rect.has_point(xform.xform(rect.position + Vector2(rect.size.x, 0))) &&
					p_rect.has_point(xform.xform(rect.position + Vector2(rect.size.x, rect.size.y))) &&
					p_rect.has_point(xform.xform(rect.position + Vector2(0, rect.size.y)))) {

				r_items->push_back(canvas_item);
			}
		} else {
			if (p_rect.has_point(xform.xform(Point2()))) {
				r_items->push_back(canvas_item);
			}
		}
	}
}

bool CanvasItemEditor::_select_click_on_item(CanvasItem *item, Point2 p_click_pos, bool p_append) {
	bool still_selected = true;
	if (p_append) {
		if (editor_selection->is_selected(item)) {
			// Already in the selection, remove it from the selected nodes
			editor_selection->remove_node(item);
			still_selected = false;
		} else {
			// Add the item to the selection
			editor_selection->add_node(item);
		}
	} else {
		if (!editor_selection->is_selected(item)) {
			// Select a new one and clear previous selection
			editor_selection->clear();
			editor_selection->add_node(item);
			// Reselect
			if (Engine::get_singleton()->is_editor_hint()) {
				editor->call("edit_node", item);
			}
		}
	}
	viewport->update();
	return still_selected;
}

List<CanvasItem *> CanvasItemEditor::_get_edited_canvas_items(bool retreive_locked, bool remove_canvas_item_if_parent_in_selection) {
	List<CanvasItem *> selection;
	for (Map<Node *, Object *>::Element *E = editor_selection->get_selection().front(); E; E = E->next()) {
		CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->key());
		if (canvas_item && canvas_item->is_visible_in_tree() && canvas_item->get_viewport() == EditorNode::get_singleton()->get_scene_root() && (!retreive_locked || !canvas_item->has_meta("_edit_lock_"))) {
			CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);
			if (se) {
				selection.push_back(canvas_item);
			}
		}
	}

	if (remove_canvas_item_if_parent_in_selection) {
		List<CanvasItem *> filtered_selection;
		for (List<CanvasItem *>::Element *E = selection.front(); E; E = E->next()) {
			if (!selection.find(E->get()->get_parent())) {
				filtered_selection.push_back(E->get());
			}
		}
		return filtered_selection;
	} else {
		return selection;
	}
}

Vector2 CanvasItemEditor::_anchor_to_position(const Control *p_control, Vector2 anchor) {
	ERR_FAIL_COND_V(!p_control, Vector2());

	Transform2D parent_transform = p_control->get_transform().affine_inverse();
	Size2 parent_size = p_control->get_parent_area_size();

	return parent_transform.xform(Vector2(parent_size.x * anchor.x, parent_size.y * anchor.y));
}

Vector2 CanvasItemEditor::_position_to_anchor(const Control *p_control, Vector2 position) {
	ERR_FAIL_COND_V(!p_control, Vector2());
	Size2 parent_size = p_control->get_parent_area_size();

	return p_control->get_transform().xform(position) / parent_size;
}

void CanvasItemEditor::_save_canvas_item_state(List<CanvasItem *> p_canvas_items, bool save_bones) {
	for (List<CanvasItem *>::Element *E = p_canvas_items.front(); E; E = E->next()) {
		CanvasItem *canvas_item = E->get();
		CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);
		if (se) {
			se->undo_state = canvas_item->_edit_get_state();
			se->pre_drag_xform = canvas_item->get_global_transform_with_canvas();
			if (canvas_item->_edit_use_rect()) {
				se->pre_drag_rect = canvas_item->_edit_get_rect();
			} else {
				se->pre_drag_rect = Rect2();
			}
			se->pre_drag_bones_length = List<float>();
			se->pre_drag_bones_undo_state = List<Dictionary>();

			// If we have a bone, save the state of all nodes in the IK chain
			Node2D *bone = Object::cast_to<Node2D>(canvas_item);
			if (bone && bone->has_meta("_edit_bone_")) {
				// Check if we have an IK chain
				List<Node2D *> bone_ik_list;
				bool ik_found = false;
				bone = Object::cast_to<Node2D>(bone->get_parent());
				while (bone) {
					bone_ik_list.push_back(bone);
					if (bone->has_meta("_edit_ik_")) {
						ik_found = true;
						break;
					} else if (!bone->has_meta("_edit_bone_")) {
						break;
					}
					bone = Object::cast_to<Node2D>(bone->get_parent());
				}

				//Save the bone state and length if we have an IK chain
				if (ik_found) {
					bone = Object::cast_to<Node2D>(canvas_item);
					Transform2D bone_xform = bone->get_global_transform();
					for (List<Node2D *>::Element *bone_E = bone_ik_list.front(); bone_E; bone_E = bone_E->next()) {
						bone_xform = bone_xform * bone->get_transform().affine_inverse();
						Node2D *parent_bone = bone_E->get();
						se->pre_drag_bones_length.push_back(parent_bone->get_global_transform().get_origin().distance_to(bone->get_global_position()));
						se->pre_drag_bones_undo_state.push_back(parent_bone->_edit_get_state());
						bone = parent_bone;
					}
				}
			}
		}
	}
}

void CanvasItemEditor::_restore_canvas_item_state(List<CanvasItem *> p_canvas_items, bool restore_bones) {
	for (List<CanvasItem *>::Element *E = drag_selection.front(); E; E = E->next()) {
		CanvasItem *canvas_item = E->get();
		CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);
		canvas_item->_edit_set_state(se->undo_state);
		if (restore_bones) {
			for (List<Dictionary>::Element *E = se->pre_drag_bones_undo_state.front(); E; E = E->next()) {
				canvas_item = Object::cast_to<CanvasItem>(canvas_item->get_parent());
				canvas_item->_edit_set_state(E->get());
			}
		}
	}
}

void CanvasItemEditor::_commit_canvas_item_state(List<CanvasItem *> p_canvas_items, String action_name, bool commit_bones) {
	undo_redo->create_action(action_name);
	for (List<CanvasItem *>::Element *E = p_canvas_items.front(); E; E = E->next()) {
		CanvasItem *canvas_item = E->get();
		CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);
		undo_redo->add_do_method(canvas_item, "_edit_set_state", canvas_item->_edit_get_state());
		undo_redo->add_undo_method(canvas_item, "_edit_set_state", se->undo_state);
		if (commit_bones) {
			for (List<Dictionary>::Element *E = se->pre_drag_bones_undo_state.front(); E; E = E->next()) {
				canvas_item = Object::cast_to<CanvasItem>(canvas_item->get_parent());
				undo_redo->add_do_method(canvas_item, "_edit_set_state", canvas_item->_edit_get_state());
				undo_redo->add_undo_method(canvas_item, "_edit_set_state", E->get());
			}
		}
	}
	undo_redo->add_do_method(viewport, "update");
	undo_redo->add_undo_method(viewport, "update");
	undo_redo->commit_action();
}

void CanvasItemEditor::_snap_changed() {
	((SnapDialog *)snap_dialog)->get_fields(grid_offset, grid_step, snap_rotation_offset, snap_rotation_step);
	grid_step_multiplier = 0;
	viewport->update();
}

void CanvasItemEditor::_selection_result_pressed(int p_result) {

	if (selection_results.size() <= p_result)
		return;

	CanvasItem *item = selection_results[p_result].item;

	if (item)
		_select_click_on_item(item, Point2(), selection_menu_additive_selection);
}

void CanvasItemEditor::_selection_menu_hide() {

	selection_results.clear();
	selection_menu->clear();
	selection_menu->set_size(Vector2(0, 0));
}

bool CanvasItemEditor::_gui_input_rulers_and_guides(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> b = p_event;
	Ref<InputEventMouseMotion> m = p_event;

	// Start dragging a guide
	if (drag_type == DRAG_NONE) {
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && b->is_pressed()) {
			if (show_guides && show_rulers && EditorNode::get_singleton()->get_edited_scene()) {
				Transform2D xform = viewport_scrollable->get_transform() * transform;
				// Retrieve the guide lists
				Array vguides;
				if (EditorNode::get_singleton()->get_edited_scene()->has_meta("_edit_vertical_guides_")) {
					vguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_vertical_guides_");
				}
				Array hguides;
				if (EditorNode::get_singleton()->get_edited_scene()->has_meta("_edit_horizontal_guides_")) {
					hguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_horizontal_guides_");
				}

				// Press button
				if (b->get_position().x < RULER_WIDTH && b->get_position().y < RULER_WIDTH) {
					// Drag a new double guide
					drag_type = DRAG_DOUBLE_GUIDE;
					dragged_guide_index = -1;
					return true;
				} else if (b->get_position().x < RULER_WIDTH) {
					// Check if we drag an existing horizontal guide
					float minimum = 1e20;
					dragged_guide_index = -1;
					for (int i = 0; i < hguides.size(); i++) {
						if (ABS(xform.xform(Point2(0, hguides[i])).y - b->get_position().y) < MIN(minimum, 8)) {
							dragged_guide_index = i;
						}
					}

					if (dragged_guide_index >= 0) {
						// Drag an existing horizontal guide
						drag_type = DRAG_H_GUIDE;
					} else {
						// Drag a new vertical guide
						drag_type = DRAG_V_GUIDE;
					}
					return true;
				} else if (b->get_position().y < RULER_WIDTH) {
					// Check if we drag an existing vertical guide
					float minimum = 1e20;
					dragged_guide_index = -1;
					for (int i = 0; i < vguides.size(); i++) {
						if (ABS(xform.xform(Point2(vguides[i], 0)).x - b->get_position().x) < MIN(minimum, 8)) {
							dragged_guide_index = i;
						}
					}

					if (dragged_guide_index >= 0) {
						// Drag an existing vertical guide
						drag_type = DRAG_V_GUIDE;
					} else {
						// Drag a new vertical guide
						drag_type = DRAG_H_GUIDE;
					}
					drag_from = xform.affine_inverse().xform(b->get_position());
					return true;
				}
			}
		}
	}

	if (drag_type == DRAG_DOUBLE_GUIDE || drag_type == DRAG_V_GUIDE || drag_type == DRAG_H_GUIDE) {
		// Move the guide
		if (m.is_valid()) {
			Transform2D xform = viewport_scrollable->get_transform() * transform;
			drag_to = xform.affine_inverse().xform(m->get_position());

			dragged_guide_pos = xform.xform(snap_point(drag_to, SNAP_GRID | SNAP_PIXEL | SNAP_OTHER_NODES));
			viewport->update();
			return true;
		}

		// Release confirms the guide move
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && !b->is_pressed()) {
			if (show_guides && EditorNode::get_singleton()->get_edited_scene()) {
				Transform2D xform = viewport_scrollable->get_transform() * transform;

				// Retrieve the guide lists
				Array vguides;
				if (EditorNode::get_singleton()->get_edited_scene()->has_meta("_edit_vertical_guides_")) {
					vguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_vertical_guides_");
				}
				Array hguides;
				if (EditorNode::get_singleton()->get_edited_scene()->has_meta("_edit_horizontal_guides_")) {
					hguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_horizontal_guides_");
				}

				Point2 edited = snap_point(xform.affine_inverse().xform(b->get_position()), SNAP_GRID | SNAP_PIXEL | SNAP_OTHER_NODES);
				if (drag_type == DRAG_V_GUIDE) {
					Array prev_vguides = vguides.duplicate();
					if (b->get_position().x > RULER_WIDTH) {
						// Adds a new vertical guide
						if (dragged_guide_index >= 0) {
							vguides[dragged_guide_index] = edited.x;
							undo_redo->create_action(TTR("Move vertical guide"));
							undo_redo->add_do_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_vertical_guides_", vguides);
							undo_redo->add_undo_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_vertical_guides_", prev_vguides);
							undo_redo->add_undo_method(viewport, "update");
							undo_redo->commit_action();
						} else {
							vguides.push_back(edited.x);
							undo_redo->create_action(TTR("Create new vertical guide"));
							undo_redo->add_do_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_vertical_guides_", vguides);
							undo_redo->add_undo_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_vertical_guides_", prev_vguides);
							undo_redo->add_undo_method(viewport, "update");
							undo_redo->commit_action();
						}
					} else {
						if (dragged_guide_index >= 0) {
							vguides.remove(dragged_guide_index);
							undo_redo->create_action(TTR("Remove vertical guide"));
							undo_redo->add_do_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_vertical_guides_", vguides);
							undo_redo->add_undo_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_vertical_guides_", prev_vguides);
							undo_redo->add_undo_method(viewport, "update");
							undo_redo->commit_action();
						}
					}
				} else if (drag_type == DRAG_H_GUIDE) {
					Array prev_hguides = hguides.duplicate();
					if (b->get_position().y > RULER_WIDTH) {
						// Adds a new horizontal guide
						if (dragged_guide_index >= 0) {
							hguides[dragged_guide_index] = edited.y;
							undo_redo->create_action(TTR("Move horizontal guide"));
							undo_redo->add_do_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_horizontal_guides_", hguides);
							undo_redo->add_undo_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_horizontal_guides_", prev_hguides);
							undo_redo->add_undo_method(viewport, "update");
							undo_redo->commit_action();
						} else {
							hguides.push_back(edited.y);
							undo_redo->create_action(TTR("Create new horizontal guide"));
							undo_redo->add_do_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_horizontal_guides_", hguides);
							undo_redo->add_undo_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_horizontal_guides_", prev_hguides);
							undo_redo->add_undo_method(viewport, "update");
							undo_redo->commit_action();
						}
					} else {
						if (dragged_guide_index >= 0) {
							hguides.remove(dragged_guide_index);
							undo_redo->create_action(TTR("Remove horizontal guide"));
							undo_redo->add_do_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_horizontal_guides_", hguides);
							undo_redo->add_undo_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_horizontal_guides_", prev_hguides);
							undo_redo->add_undo_method(viewport, "update");
							undo_redo->commit_action();
						}
					}
				} else if (drag_type == DRAG_DOUBLE_GUIDE) {
					Array prev_hguides = hguides.duplicate();
					Array prev_vguides = vguides.duplicate();
					if (b->get_position().x > RULER_WIDTH && b->get_position().y > RULER_WIDTH) {
						// Adds a new horizontal guide a new vertical guide
						vguides.push_back(edited.x);
						hguides.push_back(edited.y);
						undo_redo->create_action(TTR("Create new horizontal and vertical guides"));
						undo_redo->add_do_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_vertical_guides_", vguides);
						undo_redo->add_do_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_horizontal_guides_", hguides);
						undo_redo->add_undo_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_vertical_guides_", prev_vguides);
						undo_redo->add_undo_method(EditorNode::get_singleton()->get_edited_scene(), "set_meta", "_edit_horizontal_guides_", prev_hguides);
						undo_redo->add_undo_method(viewport, "update");
						undo_redo->commit_action();
					}
				}
			}
			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}
	}
	return false;
}

bool CanvasItemEditor::_gui_input_zoom_or_pan(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> b = p_event;
	if (b.is_valid()) {
		if (b->is_pressed() && b->get_button_index() == BUTTON_WHEEL_DOWN) {
			// Scroll or pan down
			if (bool(EditorSettings::get_singleton()->get("editors/2d/scroll_to_pan"))) {
				view_offset.y += int(EditorSettings::get_singleton()->get("editors/2d/pan_speed")) / zoom * b->get_factor();
				_update_scrollbars();
				viewport->update();
			} else {
				_zoom_on_position(zoom * (1 - (0.05 * b->get_factor())), b->get_position());
			}
			return true;
		}

		if (b->is_pressed() && b->get_button_index() == BUTTON_WHEEL_UP) {
			// Scroll or pan up
			if (bool(EditorSettings::get_singleton()->get("editors/2d/scroll_to_pan"))) {
				view_offset.y -= int(EditorSettings::get_singleton()->get("editors/2d/pan_speed")) / zoom * b->get_factor();
				_update_scrollbars();
				viewport->update();
			} else {
				_zoom_on_position(zoom * ((0.95 + (0.05 * b->get_factor())) / 0.95), b->get_position());
			}
			return true;
		}

		if (b->is_pressed() && b->get_button_index() == BUTTON_WHEEL_LEFT) {
			// Pan left
			if (bool(EditorSettings::get_singleton()->get("editors/2d/scroll_to_pan"))) {
				view_offset.x -= int(EditorSettings::get_singleton()->get("editors/2d/pan_speed")) / zoom * b->get_factor();
				_update_scrollbars();
				viewport->update();
				return true;
			}
		}

		if (b->is_pressed() && b->get_button_index() == BUTTON_WHEEL_RIGHT) {
			// Pan right
			if (bool(EditorSettings::get_singleton()->get("editors/2d/scroll_to_pan"))) {
				view_offset.x += int(EditorSettings::get_singleton()->get("editors/2d/pan_speed")) / zoom * b->get_factor();
				_update_scrollbars();
				viewport->update();
				return true;
			}
		}

		if (drag_type == DRAG_NONE) {
			if (b->is_pressed() &&
					(b->get_button_index() == BUTTON_MIDDLE ||
							(b->get_button_index() == BUTTON_LEFT && tool == TOOL_PAN) ||
							(b->get_button_index() == BUTTON_LEFT && !EditorSettings::get_singleton()->get("editors/2d/simple_spacebar_panning") && Input::get_singleton()->is_key_pressed(KEY_SPACE)))) {
				// Pan the viewport
				drag_type = DRAG_PAN;
			}
		}

		if (drag_type == DRAG_PAN) {
			if (!b->is_pressed()) {
				// Stop panning the viewport (for any mouse button press)
				drag_type = DRAG_NONE;
			}
		}
	}

	Ref<InputEventKey> k = p_event;
	if (k.is_valid()) {
		if (k->get_scancode() == KEY_SPACE && EditorSettings::get_singleton()->get("editors/2d/simple_spacebar_panning")) {
			if (drag_type == DRAG_NONE) {
				if (k->is_pressed() && !k->is_echo()) {
					//Pan the viewport
					drag_type = DRAG_PAN;
				}
			} else if (drag_type == DRAG_PAN) {
				if (!k->is_pressed()) {
					// Stop panning the viewport (for any mouse button press)
					drag_type = DRAG_NONE;
				}
			}
		}
	}

	Ref<InputEventMouseMotion> m = p_event;
	if (m.is_valid()) {
		if (drag_type == DRAG_PAN) {
			// Pan the viewport
			Point2i relative;
			if (bool(EditorSettings::get_singleton()->get("editors/2d/warped_mouse_panning"))) {
				relative = Input::get_singleton()->warp_mouse_motion(m, viewport->get_global_rect());
			} else {
				relative = m->get_relative();
			}
			view_offset.x -= relative.x / zoom;
			view_offset.y -= relative.y / zoom;
			_update_scrollbars();
			viewport->update();
			return true;
		}
	}

	Ref<InputEventMagnifyGesture> magnify_gesture = p_event;
	if (magnify_gesture.is_valid()) {
		// Zoom gesture
		_zoom_on_position(zoom * magnify_gesture->get_factor(), magnify_gesture->get_position());
		return true;
	}

	Ref<InputEventPanGesture> pan_gesture = p_event;
	if (pan_gesture.is_valid()) {
		// Pan gesture
		const Vector2 delta = (int(EditorSettings::get_singleton()->get("editors/2d/pan_speed")) / zoom) * pan_gesture->get_delta();
		view_offset.x += delta.x;
		view_offset.y += delta.y;
		_update_scrollbars();
		viewport->update();
		return true;
	}

	return false;
}

bool CanvasItemEditor::_gui_input_pivot(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseMotion> m = p_event;
	Ref<InputEventMouseButton> b = p_event;
	Ref<InputEventKey> k = p_event;

	// Drag the pivot (in pivot mode / with V key)
	if (drag_type == DRAG_NONE) {
		if ((b.is_valid() && b->is_pressed() && b->get_button_index() == BUTTON_LEFT && tool == TOOL_EDIT_PIVOT) ||
				(k.is_valid() && k->is_pressed() && !k->is_echo() && k->get_scancode() == KEY_V)) {
			List<CanvasItem *> selection = _get_edited_canvas_items();

			// Filters the selection with nodes that allow setting the pivot
			drag_selection = List<CanvasItem *>();
			for (List<CanvasItem *>::Element *E = selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = E->get();
				if (canvas_item->_edit_use_pivot()) {
					drag_selection.push_back(canvas_item);
				}
			}

			// Start dragging if we still have nodes
			if (drag_selection.size() > 0) {
				drag_from = transform.affine_inverse().xform((b.is_valid()) ? b->get_position() : viewport->get_local_mouse_position());
				Vector2 new_pos;
				if (drag_selection.size() == 1)
					new_pos = snap_point(drag_from, SNAP_NODE_SIDES | SNAP_NODE_CENTER | SNAP_NODE_ANCHORS | SNAP_OTHER_NODES | SNAP_GRID | SNAP_PIXEL, drag_selection[0]);
				else
					new_pos = snap_point(drag_from, SNAP_OTHER_NODES | SNAP_GRID | SNAP_PIXEL);
				for (List<CanvasItem *>::Element *E = drag_selection.front(); E; E = E->next()) {
					CanvasItem *canvas_item = E->get();
					canvas_item->_edit_set_pivot(canvas_item->get_global_transform_with_canvas().affine_inverse().xform(new_pos));
				}

				drag_type = DRAG_PIVOT;
				_save_canvas_item_state(drag_selection);
			}
			return true;
		}
	}

	if (drag_type == DRAG_PIVOT) {
		// Move the pivot
		if (m.is_valid()) {
			drag_to = transform.affine_inverse().xform(m->get_position());
			_restore_canvas_item_state(drag_selection);
			Vector2 new_pos;
			if (drag_selection.size() == 1)
				new_pos = snap_point(drag_to, SNAP_NODE_SIDES | SNAP_NODE_CENTER | SNAP_NODE_ANCHORS | SNAP_OTHER_NODES | SNAP_GRID | SNAP_PIXEL, drag_selection[0]);
			else
				new_pos = snap_point(drag_to, SNAP_OTHER_NODES | SNAP_GRID | SNAP_PIXEL);
			for (List<CanvasItem *>::Element *E = drag_selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = E->get();
				canvas_item->_edit_set_pivot(canvas_item->get_global_transform_with_canvas().affine_inverse().xform(new_pos));
			}
			return true;
		}

		// Confirm the pivot move
		if ((b.is_valid() && !b->is_pressed() && b->get_button_index() == BUTTON_LEFT && tool == TOOL_EDIT_PIVOT) ||
				(k.is_valid() && !k->is_pressed() && k->get_scancode() == KEY_V)) {
			_commit_canvas_item_state(drag_selection, TTR("Move pivot"));
			drag_type = DRAG_NONE;
			return true;
		}

		// Cancel a drag
		if (b.is_valid() && b->get_button_index() == BUTTON_RIGHT && b->is_pressed()) {
			_restore_canvas_item_state(drag_selection);
			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}
	}
	return false;
}

void CanvasItemEditor::_solve_IK(Node2D *leaf_node, Point2 target_position) {
	CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(leaf_node);
	if (se && !se->pre_drag_bones_undo_state.empty()) {

		// Build the node list
		Point2 leaf_pos = target_position;

		List<Node2D *> joints_list;
		List<Point2> joints_pos;
		Node2D *joint = leaf_node;
		Transform2D joint_transform = leaf_node->get_global_transform_with_canvas();
		for (int i = 0; i < se->pre_drag_bones_undo_state.size() + 1; i++) {
			joints_list.push_back(joint);
			joints_pos.push_back(joint_transform.get_origin());
			joint_transform = joint_transform * joint->get_transform().affine_inverse();
			joint = Object::cast_to<Node2D>(joint->get_parent());
		}
		Point2 root_pos = joints_list.back()->get()->get_global_transform_with_canvas().get_origin();

		// Restraints the node to a maximum distance is necessary
		float total_len = 0;
		for (List<float>::Element *E = se->pre_drag_bones_length.front(); E; E = E->next()) {
			total_len += E->get();
		}
		if ((root_pos.distance_to(leaf_pos)) > total_len) {
			Vector2 rel = leaf_pos - root_pos;
			rel = rel.normalized() * total_len;
			leaf_pos = root_pos + rel;
		}
		joints_pos[0] = leaf_pos;

		// Run the solver
		int solver_iterations = 64;
		float solver_k = 0.3;

		// Build the position list
		for (int i = 0; i < solver_iterations; i++) {
			// Handle the leaf joint
			int node_id = 0;
			for (List<float>::Element *E = se->pre_drag_bones_length.front(); E; E = E->next()) {
				Vector2 direction = (joints_pos[node_id + 1] - joints_pos[node_id]).normalized();
				int len = E->get();
				if (E == se->pre_drag_bones_length.front()) {
					joints_pos[1] = joints_pos[1].linear_interpolate(joints_pos[0] + len * direction, solver_k);
				} else if (E == se->pre_drag_bones_length.back()) {
					joints_pos[node_id] = joints_pos[node_id].linear_interpolate(joints_pos[node_id + 1] - len * direction, solver_k);
				} else {
					Vector2 center = (joints_pos[node_id + 1] + joints_pos[node_id]) / 2.0;
					joints_pos[node_id] = joints_pos[node_id].linear_interpolate(center - (direction * len) / 2.0, solver_k);
					joints_pos[node_id + 1] = joints_pos[node_id + 1].linear_interpolate(center + (direction * len) / 2.0, solver_k);
				}
				node_id++;
			}
		}

		// Set the position
		float total_rot = 0.0f;
		for (int node_id = joints_list.size() - 1; node_id > 0; node_id--) {
			Point2 current = (joints_list[node_id - 1]->get_global_position() - joints_list[node_id]->get_global_position()).normalized();
			Point2 target = (joints_pos[node_id - 1] - joints_list[node_id]->get_global_position()).normalized();
			float rot = current.angle_to(target);
			if (joints_list[node_id]->get_global_transform().basis_determinant() < 0) {
				rot = -rot;
			}
			joints_list[node_id]->rotate(rot);
			total_rot += rot;
		}

		joints_list[0]->rotate(-total_rot);
	}
}

bool CanvasItemEditor::_gui_input_rotate(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> b = p_event;
	Ref<InputEventMouseMotion> m = p_event;

	// Start rotation
	if (drag_type == DRAG_NONE) {
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && b->is_pressed()) {
			drag_selection = _get_edited_canvas_items();
			if (drag_selection.size() > 0 && ((b->get_control() && tool == TOOL_SELECT) || tool == TOOL_ROTATE)) {
				drag_type = DRAG_ROTATE;
				drag_from = transform.affine_inverse().xform(b->get_position());
				CanvasItem *canvas_item = drag_selection[0];
				if (canvas_item->_edit_use_pivot()) {
					drag_rotation_center = canvas_item->get_global_transform_with_canvas().xform(canvas_item->_edit_get_pivot());
				} else {
					drag_rotation_center = canvas_item->get_global_transform_with_canvas().get_origin();
				}
				_save_canvas_item_state(drag_selection);
				return true;
			}
		}
	}

	if (drag_type == DRAG_ROTATE) {
		// Rotate the node
		if (m.is_valid()) {
			_restore_canvas_item_state(drag_selection);
			for (List<CanvasItem *>::Element *E = drag_selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = E->get();
				drag_to = transform.affine_inverse().xform(m->get_position());
				canvas_item->_edit_set_rotation(snap_angle(canvas_item->_edit_get_rotation() + (drag_from - drag_rotation_center).angle_to(drag_to - drag_rotation_center), canvas_item->_edit_get_rotation()));
				viewport->update();
			}
			return true;
		}

		// Confirms the node rotation
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && !b->is_pressed()) {
			_commit_canvas_item_state(drag_selection, TTR("Rotate CanvasItem"));
			drag_type = DRAG_NONE;
			return true;
		}

		// Cancel a drag
		if (b.is_valid() && b->get_button_index() == BUTTON_RIGHT && b->is_pressed()) {
			_restore_canvas_item_state(drag_selection);
			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}
	}
	return false;
}

bool CanvasItemEditor::_gui_input_open_scene_on_double_click(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> b = p_event;

	// Open a sub-scene on double-click
	if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && b->is_pressed() && b->is_doubleclick() && tool == TOOL_SELECT) {
		List<CanvasItem *> selection = _get_edited_canvas_items();
		if (selection.size() == 1) {
			CanvasItem *canvas_item = selection[0];
			if (canvas_item->get_filename() != "" && canvas_item != editor->get_edited_scene()) {
				editor->open_request(canvas_item->get_filename());
				return true;
			}
		}
	}
	return false;
}

bool CanvasItemEditor::_gui_input_anchors(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> b = p_event;
	Ref<InputEventMouseMotion> m = p_event;

	// Starts anchor dragging if needed
	if (drag_type == DRAG_NONE) {
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && b->is_pressed() && tool == TOOL_SELECT && show_helpers) {
			List<CanvasItem *> selection = _get_edited_canvas_items();
			if (selection.size() == 1) {
				Control *control = Object::cast_to<Control>(selection[0]);
				if (control && !Object::cast_to<Container>(control->get_parent())) {
					Vector2 anchor_pos[4];
					anchor_pos[0] = Vector2(control->get_anchor(MARGIN_LEFT), control->get_anchor(MARGIN_TOP));
					anchor_pos[1] = Vector2(control->get_anchor(MARGIN_RIGHT), control->get_anchor(MARGIN_TOP));
					anchor_pos[2] = Vector2(control->get_anchor(MARGIN_RIGHT), control->get_anchor(MARGIN_BOTTOM));
					anchor_pos[3] = Vector2(control->get_anchor(MARGIN_LEFT), control->get_anchor(MARGIN_BOTTOM));

					Rect2 anchor_rects[4];
					for (int i = 0; i < 4; i++) {
						anchor_pos[i] = (transform * control->get_global_transform_with_canvas()).xform(_anchor_to_position(control, anchor_pos[i]));
						anchor_rects[i] = Rect2(anchor_pos[i], anchor_handle->get_size());
						anchor_rects[i].position -= anchor_handle->get_size() * Vector2(i == 0 || i == 3, i <= 1);
					}

					DragType dragger[] = {
						DRAG_ANCHOR_TOP_LEFT,
						DRAG_ANCHOR_TOP_RIGHT,
						DRAG_ANCHOR_BOTTOM_RIGHT,
						DRAG_ANCHOR_BOTTOM_LEFT,
					};

					for (int i = 0; i < 4; i++) {
						if (anchor_rects[i].has_point(b->get_position())) {
							if ((anchor_pos[0] == anchor_pos[2]) && (anchor_pos[0].distance_to(b->get_position()) < anchor_handle->get_size().length() / 3.0)) {
								drag_type = DRAG_ANCHOR_ALL;
							} else {
								drag_type = dragger[i];
							}
							drag_from = transform.affine_inverse().xform(b->get_position());
							drag_selection = List<CanvasItem *>();
							drag_selection.push_back(control);
							_save_canvas_item_state(drag_selection);
							return true;
						}
					}
				}
			}
		}
	}

	if (drag_type == DRAG_ANCHOR_TOP_LEFT || drag_type == DRAG_ANCHOR_TOP_RIGHT || drag_type == DRAG_ANCHOR_BOTTOM_RIGHT || drag_type == DRAG_ANCHOR_BOTTOM_LEFT || drag_type == DRAG_ANCHOR_ALL) {
		// Drag the anchor
		if (m.is_valid()) {
			_restore_canvas_item_state(drag_selection);
			Control *control = Object::cast_to<Control>(drag_selection[0]);

			drag_to = transform.affine_inverse().xform(m->get_position());

			Transform2D xform = control->get_global_transform_with_canvas().affine_inverse();

			Point2 previous_anchor;
			previous_anchor.x = (drag_type == DRAG_ANCHOR_TOP_LEFT || drag_type == DRAG_ANCHOR_BOTTOM_LEFT) ? control->get_anchor(MARGIN_LEFT) : control->get_anchor(MARGIN_RIGHT);
			previous_anchor.y = (drag_type == DRAG_ANCHOR_TOP_LEFT || drag_type == DRAG_ANCHOR_TOP_RIGHT) ? control->get_anchor(MARGIN_TOP) : control->get_anchor(MARGIN_BOTTOM);
			previous_anchor = xform.affine_inverse().xform(_anchor_to_position(control, previous_anchor));

			Vector2 new_anchor = xform.xform(snap_point(previous_anchor + (drag_to - drag_from), SNAP_GRID | SNAP_OTHER_NODES, control, SNAP_NODE_PARENT | SNAP_NODE_SIDES | SNAP_NODE_CENTER));
			new_anchor = _position_to_anchor(control, new_anchor).snapped(Vector2(0.001, 0.001));

			bool use_single_axis = m->get_shift();
			Vector2 drag_vector = xform.xform(drag_to) - xform.xform(drag_from);
			bool use_y = Math::abs(drag_vector.y) > Math::abs(drag_vector.x);

			switch (drag_type) {
				case DRAG_ANCHOR_TOP_LEFT:
					if (!use_single_axis || !use_y) control->set_anchor(MARGIN_LEFT, new_anchor.x, false, false);
					if (!use_single_axis || use_y) control->set_anchor(MARGIN_TOP, new_anchor.y, false, false);
					break;
				case DRAG_ANCHOR_TOP_RIGHT:
					if (!use_single_axis || !use_y) control->set_anchor(MARGIN_RIGHT, new_anchor.x, false, false);
					if (!use_single_axis || use_y) control->set_anchor(MARGIN_TOP, new_anchor.y, false, false);
					break;
				case DRAG_ANCHOR_BOTTOM_RIGHT:
					if (!use_single_axis || !use_y) control->set_anchor(MARGIN_RIGHT, new_anchor.x, false, false);
					if (!use_single_axis || use_y) control->set_anchor(MARGIN_BOTTOM, new_anchor.y, false, false);
					break;
				case DRAG_ANCHOR_BOTTOM_LEFT:
					if (!use_single_axis || !use_y) control->set_anchor(MARGIN_LEFT, new_anchor.x, false, false);
					if (!use_single_axis || use_y) control->set_anchor(MARGIN_BOTTOM, new_anchor.y, false, false);
					break;
				case DRAG_ANCHOR_ALL:
					if (!use_single_axis || !use_y) control->set_anchor(MARGIN_LEFT, new_anchor.x, false, true);
					if (!use_single_axis || !use_y) control->set_anchor(MARGIN_RIGHT, new_anchor.x, false, true);
					if (!use_single_axis || use_y) control->set_anchor(MARGIN_TOP, new_anchor.y, false, true);
					if (!use_single_axis || use_y) control->set_anchor(MARGIN_BOTTOM, new_anchor.y, false, true);
					break;
				default:
					break;
			}
			return true;
		}

		// Confirms new anchor position
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && !b->is_pressed()) {
			_commit_canvas_item_state(drag_selection, TTR("Move anchor"));
			drag_type = DRAG_NONE;
			return true;
		}

		// Cancel a drag
		if (b.is_valid() && b->get_button_index() == BUTTON_RIGHT && b->is_pressed()) {
			_restore_canvas_item_state(drag_selection);
			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}
	}
	return false;
}

bool CanvasItemEditor::_gui_input_resize(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> b = p_event;
	Ref<InputEventMouseMotion> m = p_event;

	// Drag resize handles
	if (drag_type == DRAG_NONE) {
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && b->is_pressed() && tool == TOOL_SELECT) {
			List<CanvasItem *> selection = _get_edited_canvas_items();
			if (selection.size() == 1) {
				CanvasItem *canvas_item = selection[0];
				if (canvas_item->_edit_use_rect()) {
					Rect2 rect = canvas_item->_edit_get_rect();
					Transform2D xform = transform * canvas_item->get_global_transform_with_canvas();

					Vector2 endpoints[4] = {
						xform.xform(rect.position),
						xform.xform(rect.position + Vector2(rect.size.x, 0)),
						xform.xform(rect.position + rect.size),
						xform.xform(rect.position + Vector2(0, rect.size.y))
					};

					DragType dragger[] = {
						DRAG_TOP_LEFT,
						DRAG_TOP,
						DRAG_TOP_RIGHT,
						DRAG_RIGHT,
						DRAG_BOTTOM_RIGHT,
						DRAG_BOTTOM,
						DRAG_BOTTOM_LEFT,
						DRAG_LEFT
					};

					DragType resize_drag = DRAG_NONE;
					float radius = (select_handle->get_size().width / 2) * 1.5;

					for (int i = 0; i < 4; i++) {
						int prev = (i + 3) % 4;
						int next = (i + 1) % 4;

						Vector2 ofs = ((endpoints[i] - endpoints[prev]).normalized() + ((endpoints[i] - endpoints[next]).normalized())).normalized();
						ofs *= (select_handle->get_size().width / 2);
						ofs += endpoints[i];
						if (ofs.distance_to(b->get_position()) < radius)
							resize_drag = dragger[i * 2];

						ofs = (endpoints[i] + endpoints[next]) / 2;
						ofs += (endpoints[next] - endpoints[i]).tangent().normalized() * (select_handle->get_size().width / 2);
						if (ofs.distance_to(b->get_position()) < radius)
							resize_drag = dragger[i * 2 + 1];
					}

					if (resize_drag != DRAG_NONE) {
						drag_type = resize_drag;
						drag_from = transform.affine_inverse().xform(b->get_position());
						drag_selection = List<CanvasItem *>();
						drag_selection.push_back(canvas_item);
						_save_canvas_item_state(drag_selection);
						return true;
					}
				}
			}
		}
	}

	if (drag_type == DRAG_LEFT || drag_type == DRAG_RIGHT || drag_type == DRAG_TOP || drag_type == DRAG_BOTTOM ||
			drag_type == DRAG_TOP_LEFT || drag_type == DRAG_TOP_RIGHT || drag_type == DRAG_BOTTOM_LEFT || drag_type == DRAG_BOTTOM_RIGHT) {
		// Resize the node
		if (m.is_valid()) {
			CanvasItem *canvas_item = drag_selection[0];
			CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);
			//Reset state
			canvas_item->_edit_set_state(se->undo_state);

			bool uniform = m->get_shift();
			bool symmetric = m->get_alt();

			Rect2 local_rect = canvas_item->_edit_get_rect();
			float aspect = local_rect.get_size().y / local_rect.get_size().x;
			Point2 current_begin = local_rect.get_position();
			Point2 current_end = local_rect.get_position() + local_rect.get_size();
			Point2 max_begin = (symmetric) ? (current_begin + current_end - canvas_item->_edit_get_minimum_size()) / 2.0 : current_end - canvas_item->_edit_get_minimum_size();
			Point2 min_end = (symmetric) ? (current_begin + current_end + canvas_item->_edit_get_minimum_size()) / 2.0 : current_begin + canvas_item->_edit_get_minimum_size();
			Point2 center = (current_begin + current_end) / 2.0;

			drag_to = transform.affine_inverse().xform(m->get_position());

			Transform2D xform = canvas_item->get_global_transform_with_canvas().affine_inverse();

			Point2 drag_to_snapped_begin = snap_point(xform.affine_inverse().xform(current_begin) + (drag_to - drag_from), SNAP_NODE_ANCHORS | SNAP_NODE_PARENT | SNAP_OTHER_NODES | SNAP_GRID | SNAP_PIXEL, canvas_item);
			Point2 drag_to_snapped_end = snap_point(xform.affine_inverse().xform(current_end) + (drag_to - drag_from), SNAP_NODE_ANCHORS | SNAP_NODE_PARENT | SNAP_OTHER_NODES | SNAP_GRID | SNAP_PIXEL, canvas_item);
			Point2 drag_begin = xform.xform(drag_to_snapped_begin);
			Point2 drag_end = xform.xform(drag_to_snapped_end);

			// Horizontal resize
			if (drag_type == DRAG_LEFT || drag_type == DRAG_TOP_LEFT || drag_type == DRAG_BOTTOM_LEFT) {
				current_begin.x = MIN(drag_begin.x, max_begin.x);
			} else if (drag_type == DRAG_RIGHT || drag_type == DRAG_TOP_RIGHT || drag_type == DRAG_BOTTOM_RIGHT) {
				current_end.x = MAX(drag_end.x, min_end.x);
			}

			// Vertical resize
			if (drag_type == DRAG_TOP || drag_type == DRAG_TOP_LEFT || drag_type == DRAG_TOP_RIGHT) {
				current_begin.y = MIN(drag_begin.y, max_begin.y);
			} else if (drag_type == DRAG_BOTTOM || drag_type == DRAG_BOTTOM_LEFT || drag_type == DRAG_BOTTOM_RIGHT) {
				current_end.y = MAX(drag_end.y, min_end.y);
			}

			// Uniform resize
			if (uniform) {
				if (drag_type == DRAG_LEFT || drag_type == DRAG_RIGHT) {
					current_end.y = current_begin.y + aspect * (current_end.x - current_begin.x);
				} else if (drag_type == DRAG_TOP || drag_type == DRAG_BOTTOM) {
					current_end.x = current_begin.x + (current_end.y - current_begin.y) / aspect;
				} else {
					if (aspect >= 1.0) {
						if (drag_type == DRAG_TOP_LEFT || drag_type == DRAG_TOP_RIGHT) {
							current_begin.y = current_end.y - aspect * (current_end.x - current_begin.x);
						} else {
							current_end.y = current_begin.y + aspect * (current_end.x - current_begin.x);
						}
					} else {
						if (drag_type == DRAG_TOP_LEFT || drag_type == DRAG_BOTTOM_LEFT) {
							current_begin.x = current_end.x - (current_end.y - current_begin.y) / aspect;
						} else {
							current_end.x = current_begin.x + (current_end.y - current_begin.y) / aspect;
						}
					}
				}
			}

			// Symmetric resize
			if (symmetric) {
				if (drag_type == DRAG_LEFT || drag_type == DRAG_TOP_LEFT || drag_type == DRAG_BOTTOM_LEFT) {
					current_end.x = 2.0 * center.x - current_begin.x;
				} else if (drag_type == DRAG_RIGHT || drag_type == DRAG_TOP_RIGHT || drag_type == DRAG_BOTTOM_RIGHT) {
					current_begin.x = 2.0 * center.x - current_end.x;
				}
				if (drag_type == DRAG_TOP || drag_type == DRAG_TOP_LEFT || drag_type == DRAG_TOP_RIGHT) {
					current_end.y = 2.0 * center.y - current_begin.y;
				} else if (drag_type == DRAG_BOTTOM || drag_type == DRAG_BOTTOM_LEFT || drag_type == DRAG_BOTTOM_RIGHT) {
					current_begin.y = 2.0 * center.y - current_end.y;
				}
			}
			canvas_item->_edit_set_rect(Rect2(current_begin, current_end - current_begin));
			return true;
		}

		// Confirm resize
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && !b->is_pressed()) {
			_commit_canvas_item_state(drag_selection, TTR("Resize CanvasItem"));
			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}

		// Cancel a drag
		if (b.is_valid() && b->get_button_index() == BUTTON_RIGHT && b->is_pressed()) {
			_restore_canvas_item_state(drag_selection);
			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}
	}
	return false;
}

bool CanvasItemEditor::_gui_input_move(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> b = p_event;
	Ref<InputEventMouseMotion> m = p_event;
	Ref<InputEventKey> k = p_event;

	if (drag_type == DRAG_NONE) {
		//Start moving the nodes
		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && b->is_pressed()) {
			List<CanvasItem *> selection = _get_edited_canvas_items();
			if ((b->get_alt() || tool == TOOL_MOVE) && selection.size() > 0) {
				drag_type = DRAG_ALL;
				drag_from = transform.affine_inverse().xform(b->get_position());
				drag_selection = selection;
				_save_canvas_item_state(drag_selection);
				return true;
			}
		}
	}

	if (drag_type == DRAG_ALL) {
		// Move the nodes
		if (m.is_valid()) {
			_restore_canvas_item_state(drag_selection, true);

			drag_to = transform.affine_inverse().xform(m->get_position());
			Point2 previous_pos;
			if (drag_selection.size() == 1) {
				Transform2D xform = drag_selection[0]->get_global_transform_with_canvas() * drag_selection[0]->get_transform().affine_inverse();
				previous_pos = xform.xform(drag_selection[0]->_edit_get_position());
			} else {
				previous_pos = _get_encompassing_rect_from_list(drag_selection).position;
			}
			Point2 new_pos = snap_point(previous_pos + (drag_to - drag_from), SNAP_GRID | SNAP_GUIDES | SNAP_PIXEL | SNAP_NODE_PARENT | SNAP_NODE_ANCHORS | SNAP_OTHER_NODES);
			bool single_axis = m->get_shift();
			if (single_axis) {
				if (ABS(new_pos.x - previous_pos.x) > ABS(new_pos.y - previous_pos.y)) {
					new_pos.y = previous_pos.y;
				} else {
					new_pos.x = previous_pos.x;
				}
			}

			bool force_no_IK = m->get_alt();
			for (List<CanvasItem *>::Element *E = drag_selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = E->get();
				CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);
				Transform2D xform = canvas_item->get_global_transform_with_canvas().affine_inverse() * canvas_item->get_transform();

				Node2D *node2d = Object::cast_to<Node2D>(canvas_item);
				if (node2d && se->pre_drag_bones_undo_state.size() > 0 && !force_no_IK) {
					_solve_IK(node2d, new_pos);
				} else {
					canvas_item->_edit_set_position(canvas_item->_edit_get_position() + xform.xform(new_pos) - xform.xform(previous_pos));
				}
			}
			return true;
		}

		// Confirm the move (only if it was moved)
		if (b.is_valid() && !b->is_pressed() && b->get_button_index() == BUTTON_LEFT && (drag_type == DRAG_ALL)) {
			if (transform.affine_inverse().xform(b->get_position()) != drag_from) {
				_commit_canvas_item_state(drag_selection, TTR("Move CanvasItem"), true);
			}

			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}

		// Cancel a drag
		if (b.is_valid() && b->get_button_index() == BUTTON_RIGHT && b->is_pressed()) {
			_restore_canvas_item_state(drag_selection, true);
			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}
	}

	// Move the canvas items with the arrow keys
	if (k.is_valid() && k->is_pressed() && tool == TOOL_SELECT &&
			(k->get_scancode() == KEY_UP || k->get_scancode() == KEY_DOWN || k->get_scancode() == KEY_LEFT || k->get_scancode() == KEY_RIGHT)) {
		if (!k->is_echo()) {
			// Start moving the canvas items with the keyboard
			drag_selection = _get_edited_canvas_items();
			drag_type = DRAG_KEY_MOVE;
			drag_from = Vector2();
			drag_to = Vector2();
			_save_canvas_item_state(drag_selection, true);
		}

		if (drag_selection.size() > 0) {

			_restore_canvas_item_state(drag_selection, true);

			bool move_local_base = k->get_alt();
			bool move_local_base_rotated = k->get_control() || k->get_metakey();

			Vector2 dir;
			if (k->get_scancode() == KEY_UP)
				dir += Vector2(0, -1);
			else if (k->get_scancode() == KEY_DOWN)
				dir += Vector2(0, 1);
			else if (k->get_scancode() == KEY_LEFT)
				dir += Vector2(-1, 0);
			else if (k->get_scancode() == KEY_RIGHT)
				dir += Vector2(1, 0);
			if (k->get_shift())
				dir *= grid_step * Math::pow(2.0, grid_step_multiplier);

			drag_to += dir;
			if (k->get_shift())
				drag_to = drag_to.snapped(grid_step * Math::pow(2.0, grid_step_multiplier));

			Point2 previous_pos;
			if (drag_selection.size() == 1) {
				Transform2D xform = drag_selection[0]->get_global_transform_with_canvas() * drag_selection[0]->get_transform().affine_inverse();
				previous_pos = xform.xform(drag_selection[0]->_edit_get_position());
			} else {
				previous_pos = _get_encompassing_rect_from_list(drag_selection).position;
			}

			Point2 new_pos;
			if (drag_selection.size() == 1) {
				Node2D *node_2d = Object::cast_to<Node2D>(drag_selection[0]);
				if (node_2d && move_local_base_rotated) {
					Transform2D m;
					m.rotate(node_2d->get_rotation());
					new_pos += m.xform(drag_to);
				} else if (move_local_base) {
					new_pos += drag_to;
				} else {
					new_pos = previous_pos + (drag_to - drag_from);
				}
			} else {
				new_pos = previous_pos + (drag_to - drag_from);
			}

			for (List<CanvasItem *>::Element *E = drag_selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = E->get();
				CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);
				Transform2D xform = canvas_item->get_global_transform_with_canvas().affine_inverse() * canvas_item->get_transform();

				Node2D *node2d = Object::cast_to<Node2D>(canvas_item);
				if (node2d && se->pre_drag_bones_undo_state.size() > 0) {
					_solve_IK(node2d, new_pos);
				} else {
					canvas_item->_edit_set_position(canvas_item->_edit_get_position() + xform.xform(new_pos) - xform.xform(previous_pos));
				}
			}
		}
		return true;
	}

	if (k.is_valid() && !k->is_pressed() && drag_type == DRAG_KEY_MOVE && tool == TOOL_SELECT &&
			(k->get_scancode() == KEY_UP || k->get_scancode() == KEY_DOWN || k->get_scancode() == KEY_LEFT || k->get_scancode() == KEY_RIGHT)) {
		// Confirm canvas items move by arrow keys
		if ((!Input::get_singleton()->is_key_pressed(KEY_UP)) &&
				(!Input::get_singleton()->is_key_pressed(KEY_DOWN)) &&
				(!Input::get_singleton()->is_key_pressed(KEY_LEFT)) &&
				(!Input::get_singleton()->is_key_pressed(KEY_RIGHT))) {
			_commit_canvas_item_state(drag_selection, TTR("Move CanvasItem"), true);
			drag_type = DRAG_NONE;
		}
		viewport->update();
		return true;
	}

	if (k.is_valid() && (k->get_scancode() == KEY_UP || k->get_scancode() == KEY_DOWN || k->get_scancode() == KEY_LEFT || k->get_scancode() == KEY_RIGHT)) {
		// Accept the key event in any case
		return true;
	}
	return false;
}

bool CanvasItemEditor::_gui_input_select(const Ref<InputEvent> &p_event) {
	Ref<InputEventMouseButton> b = p_event;
	Ref<InputEventMouseMotion> m = p_event;
	Ref<InputEventKey> k = p_event;

	if (drag_type == DRAG_NONE) {
		if (b.is_valid() &&
				((b->get_button_index() == BUTTON_RIGHT && b->get_alt() && tool == TOOL_SELECT) ||
						(b->get_button_index() == BUTTON_LEFT && tool == TOOL_LIST_SELECT))) {
			// Popup the selection menu list
			Point2 click = transform.affine_inverse().xform(b->get_position());

			_get_canvas_items_at_pos(click, selection_results);

			if (selection_results.size() == 1) {
				CanvasItem *item = selection_results[0].item;
				selection_results.clear();

				_select_click_on_item(item, click, b->get_shift());

				return true;
			} else if (!selection_results.empty()) {
				// Sorts items according the their z-index
				selection_results.sort();

				NodePath root_path = get_tree()->get_edited_scene_root()->get_path();
				StringName root_name = root_path.get_name(root_path.get_name_count() - 1);

				for (int i = 0; i < selection_results.size(); i++) {
					CanvasItem *item = selection_results[i].item;

					Ref<Texture> icon;
					if (item->has_meta("_editor_icon"))
						icon = item->get_meta("_editor_icon");
					else
						icon = get_icon(has_icon(item->get_class(), "EditorIcons") ? item->get_class() : String("Object"), "EditorIcons");
					String node_path = "/" + root_name + "/" + root_path.rel_path_to(item->get_path());

					selection_menu->add_item(item->get_name());
					selection_menu->set_item_icon(i, icon);
					selection_menu->set_item_metadata(i, node_path);
					selection_menu->set_item_tooltip(i, String(item->get_name()) + "\nType: " + item->get_class() + "\nPath: " + node_path);
				}

				selection_menu_additive_selection = b->get_shift();
				selection_menu->set_global_position(b->get_global_position());
				selection_menu->popup();
				return true;
			}
		}

		if (b.is_valid() && b->get_button_index() == BUTTON_LEFT && b->is_pressed() && tool == TOOL_SELECT) {
			// Single item selection
			Point2 click = transform.affine_inverse().xform(b->get_position());

			Node *scene = editor->get_edited_scene();
			if (!scene)
				return true;

			// Find the item to select
			CanvasItem *canvas_item = NULL;
			Vector<_SelectResult> selection;

			// Retrieve the items
			_get_canvas_items_at_pos(click, selection, editor_selection->get_selection().empty() ? 1 : 0);

			// Retrieve the bones
			_get_bones_at_pos(click, selection);

			for (int i = 0; i < selection.size(); i++) {
				if (editor_selection->is_selected(selection[i].item)) {
					// Drag the node(s) if requested
					List<CanvasItem *> selection = _get_edited_canvas_items();

					drag_type = DRAG_ALL;
					drag_selection = selection;
					drag_from = click;
					_save_canvas_item_state(drag_selection);

					return true;
				}
			}

			if (!selection.empty())
				canvas_item = selection[0].item;

			if (!canvas_item) {
				// Start a box selection
				if (!b->get_shift()) {
					// Clear the selection if not additive
					editor_selection->clear();
					viewport->update();
				};

				drag_from = click;
				drag_type = DRAG_BOX_SELECTION;
				box_selecting_to = drag_from;
				return true;
			} else {
				bool still_selected = _select_click_on_item(canvas_item, click, b->get_shift());
				// Start dragging
				if (still_selected) {
					// Drag the node(s) if requested
					List<CanvasItem *> selection = _get_edited_canvas_items();

					drag_type = DRAG_ALL;
					drag_selection = selection;
					drag_from = click;
					_save_canvas_item_state(drag_selection);
				}
				// Select the item
				return true;
			}
		}
	}

	if (drag_type == DRAG_BOX_SELECTION) {
		if (b.is_valid() && !b->is_pressed() && b->get_button_index() == BUTTON_LEFT) {
			// Confirms box selection
			Node *scene = editor->get_edited_scene();
			if (scene) {
				List<CanvasItem *> selitems;

				Point2 bsfrom = drag_from;
				Point2 bsto = box_selecting_to;
				if (bsfrom.x > bsto.x)
					SWAP(bsfrom.x, bsto.x);
				if (bsfrom.y > bsto.y)
					SWAP(bsfrom.y, bsto.y);

				_find_canvas_items_in_rect(Rect2(bsfrom, bsto - bsfrom), scene, &selitems);
				for (List<CanvasItem *>::Element *E = selitems.front(); E; E = E->next()) {
					editor_selection->add_node(E->get());
				}
			}

			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}

		if (b.is_valid() && b->is_pressed() && b->get_button_index() == BUTTON_RIGHT) {
			// Cancel box selection
			drag_type = DRAG_NONE;
			viewport->update();
			return true;
		}

		if (m.is_valid()) {
			// Update box selection
			box_selecting_to = transform.affine_inverse().xform(m->get_position());
			viewport->update();
			return true;
		}
	}

	if (k.is_valid() && k->is_pressed() && k->get_scancode() == KEY_ESCAPE && drag_type == DRAG_NONE && tool == TOOL_SELECT) {
		// Unselect everything
		editor_selection->clear();
		viewport->update();
	}
	return false;
}

bool CanvasItemEditor::_gui_input_hover(const Ref<InputEvent> &p_event) {

	Ref<InputEventMouseMotion> m = p_event;
	if (m.is_valid()) {
		if (drag_type == DRAG_NONE && tool == TOOL_SELECT) {
			Point2 click = transform.affine_inverse().xform(m->get_position());

			//Checks if the hovered items changed, update the viewport if so
			Vector<_SelectResult> hovering_results_tmp;
			_get_canvas_items_at_pos(click, hovering_results_tmp);
			hovering_results_tmp.sort();
			bool changed = false;
			if (hovering_results.size() == hovering_results_tmp.size()) {
				for (int i = 0; i < hovering_results.size(); i++) {
					if (hovering_results[i].item != hovering_results_tmp[i].item) {
						changed = true;
						break;
					}
				}
			} else {
				changed = true;
			}

			if (changed) {
				hovering_results = hovering_results_tmp;
				viewport->update();
			}

			return true;
		}
	}

	return false;
}

void CanvasItemEditor::_gui_input_viewport(const Ref<InputEvent> &p_event) {
	bool accepted = false;
	if ((accepted = _gui_input_rulers_and_guides(p_event))) {
		//printf("Rulers and guides\n");
	} else if ((accepted = editor->get_editor_plugins_over()->forward_gui_input(p_event))) {
		//printf("Plugin\n");
	} else if ((accepted = _gui_input_open_scene_on_double_click(p_event))) {
		//printf("Open scene on double click\n");
	} else if ((accepted = _gui_input_anchors(p_event))) {
		//printf("Anchors\n");
	} else if ((accepted = _gui_input_pivot(p_event))) {
		//printf("Set pivot\n");
	} else if ((accepted = _gui_input_resize(p_event))) {
		//printf("Resize\n");
	} else if ((accepted = _gui_input_rotate(p_event))) {
		//printf("Rotate\n");
	} else if ((accepted = _gui_input_move(p_event))) {
		//printf("Move\n");
	} else if ((accepted = _gui_input_zoom_or_pan(p_event))) {
		//printf("Zoom or pan\n");
	} else if ((accepted = _gui_input_select(p_event))) {
		//printf("Selection\n");
	}

	if (accepted)
		accept_event();

	// Handles the mouse hovering
	_gui_input_hover(p_event);

	// Change the cursor
	CursorShape c = CURSOR_ARROW;
	switch (drag_type) {
		case DRAG_NONE:
			switch (tool) {
				case TOOL_MOVE:
					c = CURSOR_MOVE;
					break;
				case TOOL_EDIT_PIVOT:
					c = CURSOR_CROSS;
					break;
				case TOOL_PAN:
					c = CURSOR_DRAG;
					break;
				default:
					break;
			}
			break;
		case DRAG_LEFT:
		case DRAG_RIGHT:
			c = CURSOR_HSIZE;
			break;
		case DRAG_TOP:
		case DRAG_BOTTOM:
			c = CURSOR_VSIZE;
			break;
		case DRAG_TOP_LEFT:
		case DRAG_BOTTOM_RIGHT:
			c = CURSOR_FDIAGSIZE;
			break;
		case DRAG_TOP_RIGHT:
		case DRAG_BOTTOM_LEFT:
			c = CURSOR_BDIAGSIZE;
			break;
		case DRAG_ALL:
			c = CURSOR_MOVE;
			break;
		case DRAG_PAN:
			c = CURSOR_DRAG;
		default:
			break;
	}
	viewport->set_default_cursor_shape(c);

	// Grab focus
	if (!viewport->has_focus() && (!get_focus_owner() || !get_focus_owner()->is_text_field())) {
		viewport->call_deferred("grab_focus");
	}
}

void CanvasItemEditor::_draw_text_at_position(Point2 p_position, String p_string, Margin p_side) {
	Color color = get_color("font_color", "Editor");
	color.a = 0.8;
	Ref<Font> font = get_font("font", "Label");
	Size2 text_size = font->get_string_size(p_string);
	switch (p_side) {
		case MARGIN_LEFT:
			p_position += Vector2(-text_size.x - 5, text_size.y / 2);
			break;
		case MARGIN_TOP:
			p_position += Vector2(-text_size.x / 2, -5);
			break;
		case MARGIN_RIGHT:
			p_position += Vector2(5, text_size.y / 2);
			break;
		case MARGIN_BOTTOM:
			p_position += Vector2(-text_size.x / 2, text_size.y + 5);
			break;
	}
	viewport->draw_string(font, p_position, p_string, color);
}

void CanvasItemEditor::_draw_margin_at_position(int p_value, Point2 p_position, Margin p_side) {
	String str = vformat("%d px", p_value);
	if (p_value != 0) {
		_draw_text_at_position(p_position, str, p_side);
	}
}

void CanvasItemEditor::_draw_percentage_at_position(float p_value, Point2 p_position, Margin p_side) {
	String str = vformat("%.1f %%", p_value * 100.0);
	if (p_value != 0) {
		_draw_text_at_position(p_position, str, p_side);
	}
}

void CanvasItemEditor::_draw_focus() {
	// Draw the focus around the base viewport
	if (viewport->has_focus()) {
		get_stylebox("Focus", "EditorStyles")->draw(viewport->get_canvas_item(), Rect2(Point2(), viewport->get_size()));
	}
}

void CanvasItemEditor::_draw_guides() {

	Color guide_color = EditorSettings::get_singleton()->get("editors/2d/guides_color");
	Transform2D xform = viewport_scrollable->get_transform() * transform;

	// Guides already there
	if (EditorNode::get_singleton()->get_edited_scene() && EditorNode::get_singleton()->get_edited_scene()->has_meta("_edit_vertical_guides_")) {
		Array vguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_vertical_guides_");
		for (int i = 0; i < vguides.size(); i++) {
			if (drag_type == DRAG_V_GUIDE && i == dragged_guide_index)
				continue;
			float x = xform.xform(Point2(vguides[i], 0)).x;
			viewport->draw_line(Point2(x, 0), Point2(x, viewport->get_size().y), guide_color);
		}
	}

	if (EditorNode::get_singleton()->get_edited_scene() && EditorNode::get_singleton()->get_edited_scene()->has_meta("_edit_horizontal_guides_")) {
		Array hguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_horizontal_guides_");
		for (int i = 0; i < hguides.size(); i++) {
			if (drag_type == DRAG_H_GUIDE && i == dragged_guide_index)
				continue;
			float y = xform.xform(Point2(0, hguides[i])).y;
			viewport->draw_line(Point2(0, y), Point2(viewport->get_size().x, y), guide_color);
		}
	}

	// Dragged guide
	Color text_color = get_color("font_color", "Editor");
	text_color.a = 0.5;
	if (drag_type == DRAG_DOUBLE_GUIDE || drag_type == DRAG_V_GUIDE) {
		String str = vformat("%d px", xform.affine_inverse().xform(dragged_guide_pos).x);
		Ref<Font> font = get_font("font", "Label");
		Size2 text_size = font->get_string_size(str);
		viewport->draw_string(font, Point2(dragged_guide_pos.x + 10, RULER_WIDTH + text_size.y / 2 + 10), str, text_color);
		viewport->draw_line(Point2(dragged_guide_pos.x, 0), Point2(dragged_guide_pos.x, viewport->get_size().y), guide_color);
	}
	if (drag_type == DRAG_DOUBLE_GUIDE || drag_type == DRAG_H_GUIDE) {
		String str = vformat("%d px", xform.affine_inverse().xform(dragged_guide_pos).y);
		Ref<Font> font = get_font("font", "Label");
		Size2 text_size = font->get_string_size(str);
		viewport->draw_string(font, Point2(RULER_WIDTH + 10, dragged_guide_pos.y + text_size.y / 2 + 10), str, text_color);
		viewport->draw_line(Point2(0, dragged_guide_pos.y), Point2(viewport->get_size().x, dragged_guide_pos.y), guide_color);
	}
}

void CanvasItemEditor::_draw_rulers() {
	Color bg_color = get_color("dark_color_2", "Editor");
	Color graduation_color = get_color("font_color", "Editor").linear_interpolate(bg_color, 0.5);
	Color font_color = get_color("font_color", "Editor");
	font_color.a = 0.8;
	Ref<Font> font = get_font("rulers", "EditorFonts");
	bool is_snap_active = snap_active ^ Input::get_singleton()->is_key_pressed(KEY_CONTROL);

	// The rule transform
	Transform2D ruler_transform = Transform2D();
	if (show_grid || (is_snap_active && snap_grid)) {
		List<CanvasItem *> selection = _get_edited_canvas_items();
		if (snap_relative && selection.size() > 0) {
			ruler_transform.translate(_get_encompassing_rect_from_list(selection).position);
			ruler_transform.scale_basis(grid_step * Math::pow(2.0, grid_step_multiplier));
		} else {
			ruler_transform.translate(grid_offset);
			ruler_transform.scale_basis(grid_step * Math::pow(2.0, grid_step_multiplier));
		}
		while ((transform * ruler_transform).get_scale().x < 50 || (transform * ruler_transform).get_scale().y < 50) {
			ruler_transform.scale_basis(Point2(2, 2));
		}
	} else {
		float basic_rule = 100;
		for (int i = 0; basic_rule * zoom > 100; i++) {
			basic_rule /= (i % 2) ? 5.0 : 2.0;
		}
		for (int i = 0; basic_rule * zoom < 100; i++) {
			basic_rule *= (i % 2) ? 2.0 : 5.0;
		}
		ruler_transform.scale(Size2(basic_rule, basic_rule));
	}

	// Subdivisions
	int major_subdivision = 2;
	Transform2D major_subdivide = Transform2D();
	major_subdivide.scale(Size2(1.0 / major_subdivision, 1.0 / major_subdivision));

	int minor_subdivision = 5;
	Transform2D minor_subdivide = Transform2D();
	minor_subdivide.scale(Size2(1.0 / minor_subdivision, 1.0 / minor_subdivision));

	// First and last graduations to draw (in the ruler space)
	Point2 first = (transform * ruler_transform * major_subdivide * minor_subdivide).affine_inverse().xform(Point2(RULER_WIDTH, RULER_WIDTH));
	Point2 last = (transform * ruler_transform * major_subdivide * minor_subdivide).affine_inverse().xform(viewport->get_size());

	// Draw top ruler
	viewport->draw_rect(Rect2(Point2(RULER_WIDTH, 0), Size2(viewport->get_size().x, RULER_WIDTH)), bg_color);
	for (int i = Math::ceil(first.x); i < last.x; i++) {
		Point2 position = (transform * ruler_transform * major_subdivide * minor_subdivide).xform(Point2(i, 0));
		if (i % (major_subdivision * minor_subdivision) == 0) {
			viewport->draw_line(Point2(position.x, 0), Point2(position.x, RULER_WIDTH), graduation_color);
			float val = (ruler_transform * major_subdivide * minor_subdivide).xform(Point2(i, 0)).x;
			viewport->draw_string(font, Point2(position.x + 2, font->get_height()), vformat(((int)val == val) ? "%d" : "%.1f", val), font_color);
		} else {
			if (i % minor_subdivision == 0) {
				viewport->draw_line(Point2(position.x, RULER_WIDTH * 0.33), Point2(position.x, RULER_WIDTH), graduation_color);
			} else {
				viewport->draw_line(Point2(position.x, RULER_WIDTH * 0.66), Point2(position.x, RULER_WIDTH), graduation_color);
			}
		}
	}

	// Draw left ruler
	viewport->draw_rect(Rect2(Point2(0, RULER_WIDTH), Size2(RULER_WIDTH, viewport->get_size().y)), bg_color);
	for (int i = Math::ceil(first.y); i < last.y; i++) {
		Point2 position = (transform * ruler_transform * major_subdivide * minor_subdivide).xform(Point2(0, i));
		if (i % (major_subdivision * minor_subdivision) == 0) {
			viewport->draw_line(Point2(0, position.y), Point2(RULER_WIDTH, position.y), graduation_color);
			float val = (ruler_transform * major_subdivide * minor_subdivide).xform(Point2(0, i)).y;
			viewport->draw_string(font, Point2(2, position.y + 2 + font->get_height()), vformat(((int)val == val) ? "%d" : "%.1f", val), font_color);
		} else {
			if (i % minor_subdivision == 0) {
				viewport->draw_line(Point2(RULER_WIDTH * 0.33, position.y), Point2(RULER_WIDTH, position.y), graduation_color);
			} else {
				viewport->draw_line(Point2(RULER_WIDTH * 0.66, position.y), Point2(RULER_WIDTH, position.y), graduation_color);
			}
		}
	}
	viewport->draw_rect(Rect2(Point2(), Size2(RULER_WIDTH, RULER_WIDTH)), graduation_color);
}

void CanvasItemEditor::_draw_grid() {
	if (show_grid) {
		//Draw the grid
		Size2 s = viewport->get_size();
		int last_cell = 0;
		Transform2D xform = transform.affine_inverse();

		Vector2 real_grid_offset;
		List<CanvasItem *> selection = _get_edited_canvas_items();
		if (snap_relative && selection.size() > 0) {
			Vector2 topleft = _get_encompassing_rect_from_list(selection).position;
			real_grid_offset.x = fmod(topleft.x, grid_step.x * (real_t)Math::pow(2.0, grid_step_multiplier));
			real_grid_offset.y = fmod(topleft.y, grid_step.y * (real_t)Math::pow(2.0, grid_step_multiplier));
		} else {
			real_grid_offset = grid_offset;
		}

		const Color grid_minor_color = get_color("grid_minor_color", "Editor");
		if (grid_step.x != 0) {
			for (int i = 0; i < s.width; i++) {
				int cell = Math::fast_ftoi(Math::floor((xform.xform(Vector2(i, 0)).x - real_grid_offset.x) / (grid_step.x * Math::pow(2.0, grid_step_multiplier))));
				if (i == 0)
					last_cell = cell;
				if (last_cell != cell)
					viewport->draw_line(Point2(i, 0), Point2(i, s.height), grid_minor_color);
				last_cell = cell;
			}
		}

		if (grid_step.y != 0) {
			for (int i = 0; i < s.height; i++) {
				int cell = Math::fast_ftoi(Math::floor((xform.xform(Vector2(0, i)).y - real_grid_offset.y) / (grid_step.y * Math::pow(2.0, grid_step_multiplier))));
				if (i == 0)
					last_cell = cell;
				if (last_cell != cell)
					viewport->draw_line(Point2(0, i), Point2(s.width, i), grid_minor_color);
				last_cell = cell;
			}
		}
	}
}

void CanvasItemEditor::_draw_selection() {
	Ref<Texture> pivot_icon = get_icon("EditorPivot", "EditorIcons");
	Ref<Texture> position_icon = get_icon("EditorPosition", "EditorIcons");
	Ref<Texture> previous_position_icon = get_icon("EditorPositionPrevious", "EditorIcons");

	RID ci = viewport->get_canvas_item();

	List<CanvasItem *> selection = _get_edited_canvas_items(false, false);

	bool single = selection.size() == 1;
	for (List<CanvasItem *>::Element *E = selection.front(); E; E = E->next()) {
		CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->get());
		CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);

		// Draw the previous position if we are dragging the node
		if (show_helpers &&
				(drag_type == DRAG_ALL || drag_type == DRAG_ROTATE ||
						drag_type == DRAG_LEFT || drag_type == DRAG_RIGHT || drag_type == DRAG_TOP || drag_type == DRAG_BOTTOM ||
						drag_type == DRAG_TOP_LEFT || drag_type == DRAG_TOP_RIGHT || drag_type == DRAG_BOTTOM_LEFT || drag_type == DRAG_BOTTOM_RIGHT)) {
			const Transform2D pre_drag_xform = transform * se->pre_drag_xform;
			const Color pre_drag_color = Color(0.4, 0.6, 1, 0.7);

			if (canvas_item->_edit_use_rect()) {
				Vector2 pre_drag_endpoints[4] = {

					pre_drag_xform.xform(se->pre_drag_rect.position),
					pre_drag_xform.xform(se->pre_drag_rect.position + Vector2(se->pre_drag_rect.size.x, 0)),
					pre_drag_xform.xform(se->pre_drag_rect.position + se->pre_drag_rect.size),
					pre_drag_xform.xform(se->pre_drag_rect.position + Vector2(0, se->pre_drag_rect.size.y))
				};

				for (int i = 0; i < 4; i++) {
					viewport->draw_line(pre_drag_endpoints[i], pre_drag_endpoints[(i + 1) % 4], pre_drag_color, 2);
				}
			} else {
				viewport->draw_texture(previous_position_icon, (pre_drag_xform.xform(Point2()) - (previous_position_icon->get_size() / 2)).floor());
			}
		}

		Transform2D xform = transform * canvas_item->get_global_transform_with_canvas();

		// Draw the selected items position / surrounding boxes
		if (canvas_item->_edit_use_rect()) {
			Rect2 rect = canvas_item->_edit_get_rect();
			Vector2 endpoints[4] = {
				xform.xform(rect.position),
				xform.xform(rect.position + Vector2(rect.size.x, 0)),
				xform.xform(rect.position + rect.size),
				xform.xform(rect.position + Vector2(0, rect.size.y))
			};

			Color c = Color(1, 0.6, 0.4, 0.7);

			for (int i = 0; i < 4; i++) {
				viewport->draw_line(endpoints[i], endpoints[(i + 1) % 4], c, 2);
			}
		} else {

			Transform2D transform = Transform2D(xform.get_rotation(), xform.get_origin());
			viewport->draw_set_transform_matrix(transform);
			viewport->draw_texture(position_icon, -(position_icon->get_size() / 2));
			viewport->draw_set_transform_matrix(Transform2D());
		}

		if (single && (tool == TOOL_SELECT || tool == TOOL_MOVE || tool == TOOL_ROTATE || tool == TOOL_EDIT_PIVOT)) { //kind of sucks
			// Draw the pivot
			if (canvas_item->_edit_get_pivot() != Vector2() || drag_type == DRAG_PIVOT || tool == TOOL_EDIT_PIVOT) { // This is not really clean :/
				viewport->draw_texture(pivot_icon, (xform.xform(canvas_item->_edit_get_pivot()) - (pivot_icon->get_size() / 2)).floor());
			}

			Control *control = Object::cast_to<Control>(canvas_item);
			if (control) {
				if (tool == TOOL_SELECT && show_helpers && !Object::cast_to<Container>(control->get_parent())) {
					// Draw the helpers
					Color color_base = Color(0.8, 0.8, 0.8, 0.5);

					float anchors_values[4];
					anchors_values[0] = control->get_anchor(MARGIN_LEFT);
					anchors_values[1] = control->get_anchor(MARGIN_TOP);
					anchors_values[2] = control->get_anchor(MARGIN_RIGHT);
					anchors_values[3] = control->get_anchor(MARGIN_BOTTOM);

					// Draw the anchors
					Vector2 anchors[4];
					Vector2 anchors_pos[4];
					for (int i = 0; i < 4; i++) {
						anchors[i] = Vector2((i % 2 == 0) ? anchors_values[i] : anchors_values[(i + 1) % 4], (i % 2 == 1) ? anchors_values[i] : anchors_values[(i + 1) % 4]);
						anchors_pos[i] = xform.xform(_anchor_to_position(control, anchors[i]));
					}

					// Get which anchor is dragged
					int dragged_anchor = -1;
					switch (drag_type) {
						case DRAG_ANCHOR_ALL:
						case DRAG_ANCHOR_TOP_LEFT:
							dragged_anchor = 0;
							break;
						case DRAG_ANCHOR_TOP_RIGHT:
							dragged_anchor = 1;
							break;
						case DRAG_ANCHOR_BOTTOM_RIGHT:
							dragged_anchor = 2;
							break;
						case DRAG_ANCHOR_BOTTOM_LEFT:
							dragged_anchor = 3;
							break;
						default:
							break;
					}

					if (dragged_anchor >= 0) {
						// Draw the 4 lines when dragged
						bool snapped;
						Color color_snapped = Color(0.64, 0.93, 0.67, 0.5);

						Vector2 corners_pos[4];
						for (int i = 0; i < 4; i++) {
							corners_pos[i] = xform.xform(_anchor_to_position(control, Vector2((i == 0 || i == 3) ? ANCHOR_BEGIN : ANCHOR_END, (i <= 1) ? ANCHOR_BEGIN : ANCHOR_END)));
						}

						Vector2 line_starts[4];
						Vector2 line_ends[4];
						for (int i = 0; i < 4; i++) {
							float anchor_val = (i >= 2) ? ANCHOR_END - anchors_values[i] : anchors_values[i];
							line_starts[i] = Vector2::linear_interpolate(corners_pos[i], corners_pos[(i + 1) % 4], anchor_val);
							line_ends[i] = Vector2::linear_interpolate(corners_pos[(i + 3) % 4], corners_pos[(i + 2) % 4], anchor_val);
							snapped = anchors_values[i] == 0.0 || anchors_values[i] == 0.5 || anchors_values[i] == 1.0;
							viewport->draw_line(line_starts[i], line_ends[i], snapped ? color_snapped : color_base, (i == dragged_anchor || (i + 3) % 4 == dragged_anchor) ? 2 : 1);
						}

						// Display the percentages next to the lines
						float percent_val;
						percent_val = anchors_values[(dragged_anchor + 2) % 4] - anchors_values[dragged_anchor];
						percent_val = (dragged_anchor >= 2) ? -percent_val : percent_val;
						_draw_percentage_at_position(percent_val, (anchors_pos[dragged_anchor] + anchors_pos[(dragged_anchor + 1) % 4]) / 2, (Margin)((dragged_anchor + 1) % 4));

						percent_val = anchors_values[(dragged_anchor + 3) % 4] - anchors_values[(dragged_anchor + 1) % 4];
						percent_val = ((dragged_anchor + 1) % 4 >= 2) ? -percent_val : percent_val;
						_draw_percentage_at_position(percent_val, (anchors_pos[dragged_anchor] + anchors_pos[(dragged_anchor + 3) % 4]) / 2, (Margin)(dragged_anchor));

						percent_val = anchors_values[(dragged_anchor + 1) % 4];
						percent_val = ((dragged_anchor + 1) % 4 >= 2) ? ANCHOR_END - percent_val : percent_val;
						_draw_percentage_at_position(percent_val, (line_starts[dragged_anchor] + anchors_pos[dragged_anchor]) / 2, (Margin)(dragged_anchor));

						percent_val = anchors_values[dragged_anchor];
						percent_val = (dragged_anchor >= 2) ? ANCHOR_END - percent_val : percent_val;
						_draw_percentage_at_position(percent_val, (line_ends[(dragged_anchor + 1) % 4] + anchors_pos[dragged_anchor]) / 2, (Margin)((dragged_anchor + 1) % 4));
					}

					Rect2 anchor_rects[4];
					anchor_rects[0] = Rect2(anchors_pos[0] - anchor_handle->get_size(), anchor_handle->get_size());
					anchor_rects[1] = Rect2(anchors_pos[1] - Vector2(0.0, anchor_handle->get_size().y), Point2(-anchor_handle->get_size().x, anchor_handle->get_size().y));
					anchor_rects[2] = Rect2(anchors_pos[2], -anchor_handle->get_size());
					anchor_rects[3] = Rect2(anchors_pos[3] - Vector2(anchor_handle->get_size().x, 0.0), Point2(anchor_handle->get_size().x, -anchor_handle->get_size().y));

					for (int i = 0; i < 4; i++) {
						anchor_handle->draw_rect(ci, anchor_rects[i]);
					}

					// Draw the margin values and the node width/height when dragging control side
					float ratio = 0.33;
					Transform2D parent_transform = xform * control->get_transform().affine_inverse();
					float node_pos_in_parent[4];

					node_pos_in_parent[0] = control->get_anchor(MARGIN_LEFT) * control->get_parent_area_size().width + control->get_margin(MARGIN_LEFT);
					node_pos_in_parent[1] = control->get_anchor(MARGIN_TOP) * control->get_parent_area_size().height + control->get_margin(MARGIN_TOP);
					node_pos_in_parent[2] = control->get_anchor(MARGIN_RIGHT) * control->get_parent_area_size().width + control->get_margin(MARGIN_RIGHT);
					node_pos_in_parent[3] = control->get_anchor(MARGIN_BOTTOM) * control->get_parent_area_size().height + control->get_margin(MARGIN_BOTTOM);

					Point2 start, end;
					switch (drag_type) {
						case DRAG_LEFT:
						case DRAG_TOP_LEFT:
						case DRAG_BOTTOM_LEFT:
							_draw_margin_at_position(control->get_size().width, parent_transform.xform(Vector2((node_pos_in_parent[0] + node_pos_in_parent[2]) / 2, node_pos_in_parent[3])) + Vector2(0, 5), MARGIN_BOTTOM);
						case DRAG_ALL:
							start = Vector2(node_pos_in_parent[0], Math::lerp(node_pos_in_parent[1], node_pos_in_parent[3], ratio));
							end = start - Vector2(control->get_margin(MARGIN_LEFT), 0);
							_draw_margin_at_position(control->get_margin(MARGIN_LEFT), parent_transform.xform((start + end) / 2), MARGIN_TOP);
							viewport->draw_line(parent_transform.xform(start), parent_transform.xform(end), color_base, 1);
							break;
						default:
							break;
					}
					switch (drag_type) {
						case DRAG_RIGHT:
						case DRAG_TOP_RIGHT:
						case DRAG_BOTTOM_RIGHT:
							_draw_margin_at_position(control->get_size().width, parent_transform.xform(Vector2((node_pos_in_parent[0] + node_pos_in_parent[2]) / 2, node_pos_in_parent[3])) + Vector2(0, 5), MARGIN_BOTTOM);
						case DRAG_ALL:
							start = Vector2(node_pos_in_parent[2], Math::lerp(node_pos_in_parent[3], node_pos_in_parent[1], ratio));
							end = start - Vector2(control->get_margin(MARGIN_RIGHT), 0);
							_draw_margin_at_position(control->get_margin(MARGIN_RIGHT), parent_transform.xform((start + end) / 2), MARGIN_BOTTOM);
							viewport->draw_line(parent_transform.xform(start), parent_transform.xform(end), color_base, 1);
							break;
						default:
							break;
					}
					switch (drag_type) {
						case DRAG_TOP:
						case DRAG_TOP_LEFT:
						case DRAG_TOP_RIGHT:
							_draw_margin_at_position(control->get_size().height, parent_transform.xform(Vector2(node_pos_in_parent[2], (node_pos_in_parent[1] + node_pos_in_parent[3]) / 2)) + Vector2(5, 0), MARGIN_RIGHT);
						case DRAG_ALL:
							start = Vector2(Math::lerp(node_pos_in_parent[0], node_pos_in_parent[2], ratio), node_pos_in_parent[1]);
							end = start - Vector2(0, control->get_margin(MARGIN_TOP));
							_draw_margin_at_position(control->get_margin(MARGIN_TOP), parent_transform.xform((start + end) / 2), MARGIN_LEFT);
							viewport->draw_line(parent_transform.xform(start), parent_transform.xform(end), color_base, 1);
							break;
						default:
							break;
					}
					switch (drag_type) {
						case DRAG_BOTTOM:
						case DRAG_BOTTOM_LEFT:
						case DRAG_BOTTOM_RIGHT:
							_draw_margin_at_position(control->get_size().height, parent_transform.xform(Vector2(node_pos_in_parent[2], (node_pos_in_parent[1] + node_pos_in_parent[3]) / 2) + Vector2(5, 0)), MARGIN_RIGHT);
						case DRAG_ALL:
							start = Vector2(Math::lerp(node_pos_in_parent[2], node_pos_in_parent[0], ratio), node_pos_in_parent[3]);
							end = start - Vector2(0, control->get_margin(MARGIN_BOTTOM));
							_draw_margin_at_position(control->get_margin(MARGIN_BOTTOM), parent_transform.xform((start + end) / 2), MARGIN_RIGHT);
							viewport->draw_line(parent_transform.xform(start), parent_transform.xform(end), color_base, 1);
							break;
						default:
							break;
					}

					switch (drag_type) {
						//Draw the ghost rect if the node if rotated/scaled
						case DRAG_LEFT:
						case DRAG_TOP_LEFT:
						case DRAG_TOP:
						case DRAG_TOP_RIGHT:
						case DRAG_RIGHT:
						case DRAG_BOTTOM_RIGHT:
						case DRAG_BOTTOM:
						case DRAG_BOTTOM_LEFT:
						case DRAG_ALL:
							if (control->get_rotation() != 0.0 || control->get_scale() != Vector2(1, 1)) {
								Rect2 rect = Rect2(Vector2(node_pos_in_parent[0], node_pos_in_parent[1]), control->get_size());
								viewport->draw_rect(parent_transform.xform(rect), color_base, false);
							}
							break;
						default:
							break;
					}
				}
			}

			if (tool == TOOL_SELECT && canvas_item->_edit_use_rect()) {
				Rect2 rect = canvas_item->_edit_get_rect();
				Vector2 endpoints[4] = {
					xform.xform(rect.position),
					xform.xform(rect.position + Vector2(rect.size.x, 0)),
					xform.xform(rect.position + rect.size),
					xform.xform(rect.position + Vector2(0, rect.size.y))
				};
				for (int i = 0; i < 4; i++) {
					// Draw the resize handles
					int prev = (i + 3) % 4;
					int next = (i + 1) % 4;

					Vector2 ofs = ((endpoints[i] - endpoints[prev]).normalized() + ((endpoints[i] - endpoints[next]).normalized())).normalized();
					ofs *= 1.4144 * (select_handle->get_size().width / 2);

					select_handle->draw(ci, (endpoints[i] + ofs - (select_handle->get_size() / 2)).floor());

					ofs = (endpoints[i] + endpoints[next]) / 2;
					ofs += (endpoints[next] - endpoints[i]).tangent().normalized() * (select_handle->get_size().width / 2);

					select_handle->draw(ci, (ofs - (select_handle->get_size() / 2)).floor());
				}
			}
		}
	}

	if (drag_type == DRAG_BOX_SELECTION) {
		// Draw the dragging box
		Point2 bsfrom = transform.xform(drag_from);
		Point2 bsto = transform.xform(box_selecting_to);

		VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(bsfrom, bsto - bsfrom), Color(0.7, 0.7, 1.0, 0.3));
	}

	Color rotate_color(0.4, 0.7, 1.0, 0.8);
	if (drag_type == DRAG_ROTATE) {
		// Draw the line when rotating a node
		viewport->draw_line(transform.xform(drag_rotation_center), transform.xform(drag_to), rotate_color);
	}
}

void CanvasItemEditor::_draw_straight_line(Point2 p_from, Point2 p_to, Color p_color) {
	// Draw a line going through the whole screen from a vector
	RID ci = viewport->get_canvas_item();
	Vector<Point2> points;
	Point2 from = transform.xform(p_from);
	Point2 to = transform.xform(p_to);
	Size2 viewport_size = viewport->get_size();

	if (to.x == from.x) {
		// Vertical line
		points.push_back(Point2(to.x, 0));
		points.push_back(Point2(to.x, viewport_size.y));
	} else if (to.y == from.y) {
		// Horizontal line
		points.push_back(Point2(0, to.y));
		points.push_back(Point2(viewport_size.x, to.y));
	} else {
		float y_for_zero_x = (to.y * from.x - from.y * to.x) / (from.x - to.x);
		float x_for_zero_y = (to.x * from.y - from.x * to.y) / (from.y - to.y);
		float y_for_viewport_x = ((to.y - from.y) * (viewport_size.x - from.x)) / (to.x - from.x) + from.y;
		float x_for_viewport_y = ((to.x - from.x) * (viewport_size.y - from.y)) / (to.y - from.y) + from.x; // faux

		//bool start_set = false;
		if (y_for_zero_x >= 0 && y_for_zero_x <= viewport_size.y) {
			points.push_back(Point2(0, y_for_zero_x));
		}
		if (x_for_zero_y >= 0 && x_for_zero_y <= viewport_size.x) {
			points.push_back(Point2(x_for_zero_y, 0));
		}
		if (y_for_viewport_x >= 0 && y_for_viewport_x <= viewport_size.y) {
			points.push_back(Point2(viewport_size.x, y_for_viewport_x));
		}
		if (x_for_viewport_y >= 0 && x_for_viewport_y <= viewport_size.x) {
			points.push_back(Point2(x_for_viewport_y, viewport_size.y));
		}
	}
	if (points.size() >= 2) {
		VisualServer::get_singleton()->canvas_item_add_line(ci, points[0], points[1], p_color);
	}
}

void CanvasItemEditor::_draw_axis() {

	if (show_origin) {

		Color x_axis_color(1.0, 0.4, 0.4, 0.6);
		Color y_axis_color(0.4, 1.0, 0.4, 0.6);

		_draw_straight_line(Point2(), Point2(1, 0), x_axis_color);
		_draw_straight_line(Point2(), Point2(0, 1), y_axis_color);
	}

	if (show_viewport) {

		RID ci = viewport->get_canvas_item();

		Color area_axis_color(0.4, 0.4, 1.0, 0.4);

		Size2 screen_size = Size2(ProjectSettings::get_singleton()->get("display/window/size/width"), ProjectSettings::get_singleton()->get("display/window/size/height"));

		Vector2 screen_endpoints[4] = {
			transform.xform(Vector2(0, 0)),
			transform.xform(Vector2(screen_size.width, 0)),
			transform.xform(Vector2(screen_size.width, screen_size.height)),
			transform.xform(Vector2(0, screen_size.height))
		};

		for (int i = 0; i < 4; i++) {
			VisualServer::get_singleton()->canvas_item_add_line(ci, screen_endpoints[i], screen_endpoints[(i + 1) % 4], area_axis_color);
		}
	}
}

void CanvasItemEditor::_draw_bones() {
	RID ci = viewport->get_canvas_item();

	if (skeleton_show_bones) {
		Color bone_color1 = EditorSettings::get_singleton()->get("editors/2d/bone_color1");
		Color bone_color2 = EditorSettings::get_singleton()->get("editors/2d/bone_color2");
		Color bone_ik_color = EditorSettings::get_singleton()->get("editors/2d/bone_ik_color");
		Color bone_outline_color = EditorSettings::get_singleton()->get("editors/2d/bone_outline_color");
		Color bone_selected_color = EditorSettings::get_singleton()->get("editors/2d/bone_selected_color");

		for (Map<BoneKey, BoneList>::Element *E = bone_list.front(); E; E = E->next()) {

			Vector<Vector2> bone_shape;
			Vector<Vector2> bone_shape_outline;
			if (!_get_bone_shape(&bone_shape, &bone_shape_outline, E))
				continue;

			Node2D *from_node = Object::cast_to<Node2D>(ObjectDB::get_instance(E->key().from));
			if (!from_node->is_visible_in_tree())
				continue;

			Vector<Color> colors;
			if (from_node->has_meta("_edit_ik_")) {
				colors.push_back(bone_ik_color);
				colors.push_back(bone_ik_color);
				colors.push_back(bone_ik_color);
				colors.push_back(bone_ik_color);
			} else {
				colors.push_back(bone_color1);
				colors.push_back(bone_color2);
				colors.push_back(bone_color1);
				colors.push_back(bone_color2);
			}

			Vector<Color> outline_colors;

			if (editor_selection->is_selected(from_node)) {
				outline_colors.push_back(bone_selected_color);
				outline_colors.push_back(bone_selected_color);
				outline_colors.push_back(bone_selected_color);
				outline_colors.push_back(bone_selected_color);
				outline_colors.push_back(bone_selected_color);
				outline_colors.push_back(bone_selected_color);
			} else {
				outline_colors.push_back(bone_outline_color);
				outline_colors.push_back(bone_outline_color);
				outline_colors.push_back(bone_outline_color);
				outline_colors.push_back(bone_outline_color);
				outline_colors.push_back(bone_outline_color);
				outline_colors.push_back(bone_outline_color);
			}

			VisualServer::get_singleton()->canvas_item_add_polygon(ci, bone_shape_outline, outline_colors);
			VisualServer::get_singleton()->canvas_item_add_primitive(ci, bone_shape, colors, Vector<Vector2>(), RID());
		}
	}
}

void CanvasItemEditor::_draw_invisible_nodes_positions(Node *p_node, const Transform2D &p_parent_xform, const Transform2D &p_canvas_xform) {
	ERR_FAIL_COND(!p_node);

	Node *scene = editor->get_edited_scene();
	if (p_node != scene && p_node->get_owner() != scene && !scene->is_editable_instance(p_node->get_owner()))
		return;
	CanvasItem *canvas_item = Object::cast_to<CanvasItem>(p_node);
	if (canvas_item && !canvas_item->is_visible())
		return;

	Transform2D parent_xform = p_parent_xform;
	Transform2D canvas_xform = p_canvas_xform;

	if (canvas_item && !canvas_item->is_set_as_toplevel()) {
		parent_xform = parent_xform * canvas_item->get_transform();
	} else {
		CanvasLayer *cl = Object::cast_to<CanvasLayer>(p_node);
		parent_xform = Transform2D();
		canvas_xform = cl ? cl->get_transform() : p_canvas_xform;
	}

	for (int i = p_node->get_child_count() - 1; i >= 0; i--) {
		_draw_invisible_nodes_positions(p_node->get_child(i), parent_xform, canvas_xform);
	}

	if (canvas_item && !canvas_item->_edit_use_rect() && !editor_selection->is_selected(canvas_item)) {
		Transform2D xform = transform * canvas_xform * parent_xform;

		// Draw the node's position
		Ref<Texture> position_icon = get_icon("EditorPositionUnselected", "EditorIcons");
		Transform2D transform = Transform2D(xform.get_rotation(), xform.get_origin());
		viewport->draw_set_transform_matrix(transform);
		viewport->draw_texture(position_icon, -position_icon->get_size() / 2, Color(1.0, 1.0, 1.0, 0.5));
		viewport->draw_set_transform_matrix(Transform2D());
	}
}

void CanvasItemEditor::_draw_hover() {
	List<Rect2> previous_rects;

	for (int i = 0; i < hovering_results.size(); i++) {
		// Draw the node's name and icon
		CanvasItem *canvas_item = hovering_results[i].item;

		if (canvas_item->_edit_use_rect())
			continue;

		Transform2D xform = transform * canvas_item->get_global_transform_with_canvas();

		// Get the resources
		Ref<Texture> node_icon;
		if (has_icon(canvas_item->get_class(), "EditorIcons"))
			node_icon = get_icon(canvas_item->get_class(), "EditorIcons");
		else
			node_icon = get_icon("Object", "EditorIcons");
		Ref<Font> font = get_font("font", "Label");
		String node_name = canvas_item->get_name();
		Size2 node_name_size = font->get_string_size(node_name);
		Size2 item_size = Size2(node_icon->get_size().x + 4 + node_name_size.x, MAX(node_icon->get_size().y, node_name_size.y - 3));

		Point2 pos = xform.get_origin() - Point2(0, item_size.y) + (Point2(node_icon->get_size().x, -node_icon->get_size().y) / 4);
		// Rectify the position to avoid overlaping items
		for (List<Rect2>::Element *E = previous_rects.front(); E; E = E->next()) {
			if (E->get().intersects(Rect2(pos, item_size))) {
				pos.y = E->get().get_position().y - item_size.y;
			}
		}

		previous_rects.push_back(Rect2(pos, item_size));

		// Draw the node icon and name
		viewport->draw_texture(node_icon, pos, Color(1.0, 1.0, 1.0, 0.5));
		viewport->draw_string(font, pos + Point2(node_icon->get_size().x + 4, item_size.y - 3), node_name, Color(1.0, 1.0, 1.0, 0.5));
	}
}

void CanvasItemEditor::_draw_locks_and_groups(Node *p_node, const Transform2D &p_parent_xform, const Transform2D &p_canvas_xform) {
	ERR_FAIL_COND(!p_node);

	Node *scene = editor->get_edited_scene();
	if (p_node != scene && p_node->get_owner() != scene && !scene->is_editable_instance(p_node->get_owner()))
		return;
	CanvasItem *canvas_item = Object::cast_to<CanvasItem>(p_node);
	if (canvas_item && !canvas_item->is_visible())
		return;

	Transform2D parent_xform = p_parent_xform;
	Transform2D canvas_xform = p_canvas_xform;

	if (canvas_item && !canvas_item->is_set_as_toplevel()) {
		parent_xform = parent_xform * canvas_item->get_transform();
	} else {
		CanvasLayer *cl = Object::cast_to<CanvasLayer>(p_node);
		parent_xform = Transform2D();
		canvas_xform = cl ? cl->get_transform() : p_canvas_xform;
	}

	for (int i = p_node->get_child_count() - 1; i >= 0; i--) {
		_draw_locks_and_groups(p_node->get_child(i), parent_xform, canvas_xform);
	}

	RID viewport_canvas_item = viewport->get_canvas_item();
	if (canvas_item) {
		float offset = 0;

		Ref<Texture> lock = get_icon("LockViewport", "EditorIcons");
		if (p_node->has_meta("_edit_lock_")) {
			lock->draw(viewport_canvas_item, (transform * canvas_xform * parent_xform).xform(Point2(0, 0)) + Point2(offset, 0));
			offset += lock->get_size().x;
		}

		Ref<Texture> group = get_icon("GroupViewport", "EditorIcons");
		if (canvas_item->has_meta("_edit_group_")) {
			group->draw(viewport_canvas_item, (transform * canvas_xform * parent_xform).xform(Point2(0, 0)) + Point2(offset, 0));
			//offset += group->get_size().x;
		}
	}
}

bool CanvasItemEditor::_build_bones_list(Node *p_node) {
	ERR_FAIL_COND_V(!p_node, false);

	bool has_child_bones = false;

	for (int i = 0; i < p_node->get_child_count(); i++) {
		if (_build_bones_list(p_node->get_child(i))) {
			has_child_bones = true;
		}
	}

	CanvasItem *canvas_item = Object::cast_to<CanvasItem>(p_node);
	Node *scene = editor->get_edited_scene();
	if (!canvas_item || !canvas_item->is_visible() || (canvas_item != scene && canvas_item->get_owner() != scene && !scene->is_editable_instance(canvas_item->get_owner()))) {
		return false;
	}

	Node *parent = canvas_item->get_parent();

	if (Object::cast_to<Bone2D>(canvas_item)) {
		if (Object::cast_to<Bone2D>(parent)) {
			// Add as bone->parent relationship
			BoneKey bk;
			bk.from = parent->get_instance_id();
			bk.to = canvas_item->get_instance_id();
			if (!bone_list.has(bk)) {
				BoneList b;
				b.length = 0;
				bone_list[bk] = b;
			}

			bone_list[bk].last_pass = bone_last_frame;
		}

		if (!has_child_bones) {
			// Add a last bone if the Bone2D has no Bone2D child
			BoneKey bk;
			bk.from = canvas_item->get_instance_id();
			bk.to = 0;
			if (!bone_list.has(bk)) {
				BoneList b;
				b.length = 0;
				bone_list[bk] = b;
			}
			bone_list[bk].last_pass = bone_last_frame;
		}

		return true;
	}

	if (canvas_item->has_meta("_edit_bone_")) {
		// Add a "custom bone"
		BoneKey bk;
		bk.from = parent->get_instance_id();
		bk.to = canvas_item->get_instance_id();
		if (!bone_list.has(bk)) {
			BoneList b;
			b.length = 0;
			bone_list[bk] = b;
		}
		bone_list[bk].last_pass = bone_last_frame;
	}

	return false;
}

void CanvasItemEditor::_draw_viewport() {
	// Update the transform
	transform = Transform2D();
	transform.scale_basis(Size2(zoom, zoom));
	transform.elements[2] = -view_offset * zoom;
	editor->get_scene_root()->set_global_canvas_transform(transform);

	// hide/show buttons depending on the selection
	bool all_locked = true;
	bool all_group = true;
	List<Node *> selection = editor_selection->get_selected_node_list();
	if (selection.empty()) {
		all_locked = false;
		all_group = false;
	} else {
		for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
			if (Object::cast_to<CanvasItem>(E->get()) && !Object::cast_to<CanvasItem>(E->get())->has_meta("_edit_lock_")) {
				all_locked = false;
				break;
			}
		}
		for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
			if (Object::cast_to<CanvasItem>(E->get()) && !Object::cast_to<CanvasItem>(E->get())->has_meta("_edit_group_")) {
				all_group = false;
				break;
			}
		}
	}

	lock_button->set_visible(!all_locked);
	lock_button->set_disabled(selection.empty());
	unlock_button->set_visible(all_locked);
	group_button->set_visible(!all_group);
	group_button->set_disabled(selection.empty());
	ungroup_button->set_visible(all_group);

	_draw_grid();
	_draw_selection();
	_draw_axis();
	if (editor->get_edited_scene()) {
		_draw_locks_and_groups(editor->get_edited_scene());
		_draw_invisible_nodes_positions(editor->get_edited_scene());
	}

	RID ci = viewport->get_canvas_item();
	VisualServer::get_singleton()->canvas_item_add_set_transform(ci, Transform2D());

	EditorPluginList *over_plugin_list = editor->get_editor_plugins_over();
	if (!over_plugin_list->empty()) {
		over_plugin_list->forward_draw_over_viewport(viewport);
	}
	EditorPluginList *force_over_plugin_list = editor->get_editor_plugins_force_over();
	if (!force_over_plugin_list->empty()) {
		force_over_plugin_list->forward_force_draw_over_viewport(viewport);
	}

	_draw_bones();
	if (show_rulers)
		_draw_rulers();
	if (show_guides)
		_draw_guides();
	_draw_focus();
	_draw_hover();
}

void CanvasItemEditor::_notification(int p_what) {

	if (p_what == NOTIFICATION_PHYSICS_PROCESS) {
		EditorNode::get_singleton()->get_scene_root()->set_snap_controls_to_pixels(GLOBAL_GET("gui/common/snap_controls_to_pixels"));

		int nb_control = 0;
		int nb_having_pivot = 0;

		// Update the viewport if the canvas_item changes
		List<CanvasItem *> selection = _get_edited_canvas_items();
		for (List<CanvasItem *>::Element *E = selection.front(); E; E = E->next()) {
			CanvasItem *canvas_item = E->get();
			CanvasItemEditorSelectedItem *se = editor_selection->get_node_editor_data<CanvasItemEditorSelectedItem>(canvas_item);

			Rect2 rect;
			if (canvas_item->_edit_use_rect()) {
				rect = canvas_item->_edit_get_rect();
			} else {
				rect = Rect2();
			}
			Transform2D xform = canvas_item->get_transform();

			if (rect != se->prev_rect || xform != se->prev_xform) {
				viewport->update();
				se->prev_rect = rect;
				se->prev_xform = xform;
			}

			Control *control = Object::cast_to<Control>(canvas_item);
			if (control) {
				float anchors[4];
				Vector2 pivot;

				pivot = control->get_pivot_offset();
				anchors[MARGIN_LEFT] = control->get_anchor(MARGIN_LEFT);
				anchors[MARGIN_RIGHT] = control->get_anchor(MARGIN_RIGHT);
				anchors[MARGIN_TOP] = control->get_anchor(MARGIN_TOP);
				anchors[MARGIN_BOTTOM] = control->get_anchor(MARGIN_BOTTOM);

				if (pivot != se->prev_pivot || anchors[MARGIN_LEFT] != se->prev_anchors[MARGIN_LEFT] || anchors[MARGIN_RIGHT] != se->prev_anchors[MARGIN_RIGHT] || anchors[MARGIN_TOP] != se->prev_anchors[MARGIN_TOP] || anchors[MARGIN_BOTTOM] != se->prev_anchors[MARGIN_BOTTOM]) {
					se->prev_pivot = pivot;
					se->prev_anchors[MARGIN_LEFT] = anchors[MARGIN_LEFT];
					se->prev_anchors[MARGIN_RIGHT] = anchors[MARGIN_RIGHT];
					se->prev_anchors[MARGIN_TOP] = anchors[MARGIN_TOP];
					se->prev_anchors[MARGIN_BOTTOM] = anchors[MARGIN_BOTTOM];
					viewport->update();
				}
				nb_control++;
			}

			if (canvas_item->_edit_use_pivot()) {
				nb_having_pivot++;
			}
		}

		// Activate / Deactivate the pivot tool
		pivot_button->set_disabled(nb_having_pivot == 0);

		// Show / Hide the layout button
		presets_menu->set_visible(nb_control > 0 && nb_control == selection.size());

		// Update the viewport if bones changes
		for (Map<BoneKey, BoneList>::Element *E = bone_list.front(); E; E = E->next()) {

			Object *b = ObjectDB::get_instance(E->key().from);
			if (!b) {

				viewport->update();
				break;
			}

			Node2D *b2 = Object::cast_to<Node2D>(b);
			if (!b2 || !b2->is_inside_tree()) {
				continue;
			}

			Transform2D global_xform = b2->get_global_transform();

			if (global_xform != E->get().xform) {

				E->get().xform = global_xform;
				viewport->update();
			}

			Bone2D *bone = Object::cast_to<Bone2D>(b);
			if (bone && bone->get_default_length() != E->get().length) {

				E->get().length = bone->get_default_length();
				viewport->update();
			}
		}
	}

	if (p_what == NOTIFICATION_ENTER_TREE) {

		select_sb->set_texture(get_icon("EditorRect2D", "EditorIcons"));
		for (int i = 0; i < 4; i++) {
			select_sb->set_margin_size(Margin(i), 4);
			select_sb->set_default_margin(Margin(i), 4);
		}

		AnimationPlayerEditor::singleton->get_track_editor()->connect("visibility_changed", this, "_keying_changed");
		_keying_changed();
		get_tree()->connect("node_added", this, "_tree_changed", varray());
		get_tree()->connect("node_removed", this, "_tree_changed", varray());

	} else if (p_what == EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED) {

		select_sb->set_texture(get_icon("EditorRect2D", "EditorIcons"));
	}

	if (p_what == NOTIFICATION_EXIT_TREE) {
		get_tree()->disconnect("node_added", this, "_tree_changed");
		get_tree()->disconnect("node_removed", this, "_tree_changed");
	}

	if (p_what == NOTIFICATION_ENTER_TREE || p_what == EditorSettings::NOTIFICATION_EDITOR_SETTINGS_CHANGED) {
		select_button->set_icon(get_icon("ToolSelect", "EditorIcons"));
		list_select_button->set_icon(get_icon("ListSelect", "EditorIcons"));
		move_button->set_icon(get_icon("ToolMove", "EditorIcons"));
		rotate_button->set_icon(get_icon("ToolRotate", "EditorIcons"));
		snap_button->set_icon(get_icon("Snap", "EditorIcons"));
		snap_config_menu->set_icon(get_icon("GuiMiniTabMenu", "EditorIcons"));
		skeleton_menu->set_icon(get_icon("Bone", "EditorIcons"));
		pan_button->set_icon(get_icon("ToolPan", "EditorIcons"));
		pivot_button->set_icon(get_icon("EditPivot", "EditorIcons"));
		select_handle = get_icon("EditorHandle", "EditorIcons");
		anchor_handle = get_icon("EditorControlAnchor", "EditorIcons");
		lock_button->set_icon(get_icon("Lock", "EditorIcons"));
		unlock_button->set_icon(get_icon("Unlock", "EditorIcons"));
		group_button->set_icon(get_icon("Group", "EditorIcons"));
		ungroup_button->set_icon(get_icon("Ungroup", "EditorIcons"));
		key_loc_button->set_icon(get_icon("KeyPosition", "EditorIcons"));
		key_rot_button->set_icon(get_icon("KeyRotation", "EditorIcons"));
		key_scale_button->set_icon(get_icon("KeyScale", "EditorIcons"));
		key_insert_button->set_icon(get_icon("Key", "EditorIcons"));

		zoom_minus->set_icon(get_icon("ZoomLess", "EditorIcons"));
		zoom_reset->set_icon(get_icon("ZoomReset", "EditorIcons"));
		zoom_plus->set_icon(get_icon("ZoomMore", "EditorIcons"));

		presets_menu->set_icon(get_icon("ControlLayout", "EditorIcons"));
		PopupMenu *p = presets_menu->get_popup();

		p->clear();
		p->add_icon_item(get_icon("ControlAlignTopLeft", "EditorIcons"), "Top Left", ANCHORS_AND_MARGINS_PRESET_TOP_LEFT);
		p->add_icon_item(get_icon("ControlAlignTopRight", "EditorIcons"), "Top Right", ANCHORS_AND_MARGINS_PRESET_TOP_RIGHT);
		p->add_icon_item(get_icon("ControlAlignBottomRight", "EditorIcons"), "Bottom Right", ANCHORS_AND_MARGINS_PRESET_BOTTOM_RIGHT);
		p->add_icon_item(get_icon("ControlAlignBottomLeft", "EditorIcons"), "Bottom Left", ANCHORS_AND_MARGINS_PRESET_BOTTOM_LEFT);
		p->add_separator();
		p->add_icon_item(get_icon("ControlAlignLeftCenter", "EditorIcons"), "Center Left", ANCHORS_AND_MARGINS_PRESET_CENTER_LEFT);
		p->add_icon_item(get_icon("ControlAlignTopCenter", "EditorIcons"), "Center Top", ANCHORS_AND_MARGINS_PRESET_CENTER_TOP);
		p->add_icon_item(get_icon("ControlAlignRightCenter", "EditorIcons"), "Center Right", ANCHORS_AND_MARGINS_PRESET_CENTER_RIGHT);
		p->add_icon_item(get_icon("ControlAlignBottomCenter", "EditorIcons"), "Center Bottom", ANCHORS_AND_MARGINS_PRESET_CENTER_BOTTOM);
		p->add_icon_item(get_icon("ControlAlignCenter", "EditorIcons"), "Center", ANCHORS_AND_MARGINS_PRESET_CENTER);
		p->add_separator();
		p->add_icon_item(get_icon("ControlAlignLeftWide", "EditorIcons"), "Left Wide", ANCHORS_AND_MARGINS_PRESET_LEFT_WIDE);
		p->add_icon_item(get_icon("ControlAlignTopWide", "EditorIcons"), "Top Wide", ANCHORS_AND_MARGINS_PRESET_TOP_WIDE);
		p->add_icon_item(get_icon("ControlAlignRightWide", "EditorIcons"), "Right Wide", ANCHORS_AND_MARGINS_PRESET_RIGHT_WIDE);
		p->add_icon_item(get_icon("ControlAlignBottomWide", "EditorIcons"), "Bottom Wide", ANCHORS_AND_MARGINS_PRESET_BOTTOM_WIDE);
		p->add_icon_item(get_icon("ControlVcenterWide", "EditorIcons"), "VCenter Wide ", ANCHORS_AND_MARGINS_PRESET_VCENTER_WIDE);
		p->add_icon_item(get_icon("ControlHcenterWide", "EditorIcons"), "HCenter Wide ", ANCHORS_AND_MARGINS_PRESET_HCENTER_WIDE);
		p->add_separator();
		p->add_icon_item(get_icon("ControlAlignWide", "EditorIcons"), "Full Rect", ANCHORS_AND_MARGINS_PRESET_WIDE);
		p->add_separator();
		p->add_submenu_item(TTR("Anchors only"), "Anchors");
		p->set_item_icon(20, get_icon("Anchor", "EditorIcons"));

		anchors_popup->clear();
		anchors_popup->add_icon_item(get_icon("ControlAlignTopLeft", "EditorIcons"), "Top Left", ANCHORS_PRESET_TOP_LEFT);
		anchors_popup->add_icon_item(get_icon("ControlAlignTopRight", "EditorIcons"), "Top Right", ANCHORS_PRESET_TOP_RIGHT);
		anchors_popup->add_icon_item(get_icon("ControlAlignBottomRight", "EditorIcons"), "Bottom Right", ANCHORS_PRESET_BOTTOM_RIGHT);
		anchors_popup->add_icon_item(get_icon("ControlAlignBottomLeft", "EditorIcons"), "Bottom Left", ANCHORS_PRESET_BOTTOM_LEFT);
		anchors_popup->add_separator();
		anchors_popup->add_icon_item(get_icon("ControlAlignLeftCenter", "EditorIcons"), "Center Left", ANCHORS_PRESET_CENTER_LEFT);
		anchors_popup->add_icon_item(get_icon("ControlAlignTopCenter", "EditorIcons"), "Center Top", ANCHORS_PRESET_CENTER_TOP);
		anchors_popup->add_icon_item(get_icon("ControlAlignRightCenter", "EditorIcons"), "Center Right", ANCHORS_PRESET_CENTER_RIGHT);
		anchors_popup->add_icon_item(get_icon("ControlAlignBottomCenter", "EditorIcons"), "Center Bottom", ANCHORS_PRESET_CENTER_BOTTOM);
		anchors_popup->add_icon_item(get_icon("ControlAlignCenter", "EditorIcons"), "Center", ANCHORS_PRESET_CENTER);
		anchors_popup->add_separator();
		anchors_popup->add_icon_item(get_icon("ControlAlignLeftWide", "EditorIcons"), "Left Wide", ANCHORS_PRESET_LEFT_WIDE);
		anchors_popup->add_icon_item(get_icon("ControlAlignTopWide", "EditorIcons"), "Top Wide", ANCHORS_PRESET_TOP_WIDE);
		anchors_popup->add_icon_item(get_icon("ControlAlignRightWide", "EditorIcons"), "Right Wide", ANCHORS_PRESET_RIGHT_WIDE);
		anchors_popup->add_icon_item(get_icon("ControlAlignBottomWide", "EditorIcons"), "Bottom Wide", ANCHORS_PRESET_BOTTOM_WIDE);
		anchors_popup->add_icon_item(get_icon("ControlVcenterWide", "EditorIcons"), "VCenter Wide ", ANCHORS_PRESET_VCENTER_WIDE);
		anchors_popup->add_icon_item(get_icon("ControlHcenterWide", "EditorIcons"), "HCenter Wide ", ANCHORS_PRESET_HCENTER_WIDE);
		anchors_popup->add_separator();
		anchors_popup->add_icon_item(get_icon("ControlAlignWide", "EditorIcons"), "Full Rect", ANCHORS_PRESET_WIDE);
	}
}

void CanvasItemEditor::edit(CanvasItem *p_canvas_item) {

	drag_type = DRAG_NONE;

	// Clear the selection
	editor_selection->clear(); //_clear_canvas_items();
	editor_selection->add_node(p_canvas_item);
}

void CanvasItemEditor::_queue_update_bone_list() {

	if (bone_list_dirty)
		return;

	call_deferred("_update_bone_list");
	bone_list_dirty = true;
}

void CanvasItemEditor::_update_bone_list() {

	bone_last_frame++;

	if (editor->get_edited_scene()) {
		_build_bones_list(editor->get_edited_scene());
	}

	List<Map<BoneKey, BoneList>::Element *> bone_to_erase;
	for (Map<BoneKey, BoneList>::Element *E = bone_list.front(); E; E = E->next()) {
		if (E->get().last_pass != bone_last_frame) {
			bone_to_erase.push_back(E);
			continue;
		}

		Node *node = Object::cast_to<Node>(ObjectDB::get_instance(E->key().from));
		if (!node || !node->is_inside_tree() || (node != get_tree()->get_edited_scene_root() && !get_tree()->get_edited_scene_root()->is_a_parent_of(node))) {
			bone_to_erase.push_back(E);
			continue;
		}
	}
	while (bone_to_erase.size()) {
		bone_list.erase(bone_to_erase.front()->get());
		bone_to_erase.pop_front();
	}
	bone_list_dirty = false;
}

void CanvasItemEditor::_tree_changed(Node *) {
	_queue_update_bone_list();
}

void CanvasItemEditor::_update_scrollbars() {

	updating_scroll = true;

	// Move the zoom buttons
	Point2 zoom_hb_begin = Point2(5, 5);
	zoom_hb_begin += (show_rulers) ? Point2(RULER_WIDTH, RULER_WIDTH) : Point2();
	zoom_hb->set_begin(zoom_hb_begin);

	// Move and resize the scrollbars
	Size2 size = viewport->get_size();
	Size2 hmin = h_scroll->get_minimum_size();
	Size2 vmin = v_scroll->get_minimum_size();

	v_scroll->set_begin(Point2(size.width - vmin.width, (show_rulers) ? RULER_WIDTH : 0));
	v_scroll->set_end(Point2(size.width, size.height));

	h_scroll->set_begin(Point2((show_rulers) ? RULER_WIDTH : 0, size.height - hmin.height));
	h_scroll->set_end(Point2(size.width - vmin.width, size.height));

	// Get the visible frame
	Size2 screen_rect = Size2(ProjectSettings::get_singleton()->get("display/window/size/width"), ProjectSettings::get_singleton()->get("display/window/size/height"));
	Rect2 local_rect = Rect2(Point2(), viewport->get_size() - Size2(vmin.width, hmin.height));

	_queue_update_bone_list();

	// Calculate scrollable area
	Rect2 canvas_item_rect = Rect2(Point2(), screen_rect);
	if (editor->get_edited_scene()) {
		Rect2 content_rect = _get_encompassing_rect(editor->get_edited_scene());
		canvas_item_rect.expand_to(content_rect.position);
		canvas_item_rect.expand_to(content_rect.position + content_rect.size);
	}
	canvas_item_rect.size += screen_rect * 2;
	canvas_item_rect.position -= screen_rect;

	// Constraints the view offset and updates the scrollbars
	Point2 begin = canvas_item_rect.position;
	Point2 end = canvas_item_rect.position + canvas_item_rect.size - local_rect.size / zoom;

	if (canvas_item_rect.size.height <= (local_rect.size.y / zoom)) {
		if (ABS(begin.y - previous_update_view_offset.y) < ABS(begin.y - view_offset.y)) {
			view_offset.y = previous_update_view_offset.y;
		}

		v_scroll->hide();
	} else {
		if (view_offset.y > end.y && view_offset.y > previous_update_view_offset.y) {
			view_offset.y = MAX(end.y, previous_update_view_offset.y);
		}
		if (view_offset.y < begin.y && view_offset.y < previous_update_view_offset.y) {
			view_offset.y = MIN(begin.y, previous_update_view_offset.y);
		}

		v_scroll->show();
		v_scroll->set_min(MIN(view_offset.y, begin.y));
		v_scroll->set_max(MAX(view_offset.y, end.y) + screen_rect.y);
		v_scroll->set_page(screen_rect.y);
	}

	if (canvas_item_rect.size.width <= (local_rect.size.x / zoom)) {
		if (ABS(begin.x - previous_update_view_offset.x) < ABS(begin.x - view_offset.x)) {
			view_offset.x = previous_update_view_offset.x;
		}

		h_scroll->hide();
	} else {
		if (view_offset.x > end.x && view_offset.x > previous_update_view_offset.x) {
			view_offset.x = MAX(end.x, previous_update_view_offset.x);
		}
		if (view_offset.x < begin.x && view_offset.x < previous_update_view_offset.x) {
			view_offset.x = MIN(begin.x, previous_update_view_offset.x);
		}

		h_scroll->show();
		h_scroll->set_min(MIN(view_offset.x, begin.x));
		h_scroll->set_max(MAX(view_offset.x, end.x) + screen_rect.x);
		h_scroll->set_page(screen_rect.x);
	}

	// Calculate scrollable area
	v_scroll->set_value(view_offset.y);
	h_scroll->set_value(view_offset.x);

	previous_update_view_offset = view_offset;
	updating_scroll = false;
}

void CanvasItemEditor::_update_scroll(float) {

	if (updating_scroll)
		return;

	view_offset.x = h_scroll->get_value();
	view_offset.y = v_scroll->get_value();
	viewport->update();
}

void CanvasItemEditor::_set_anchors_and_margins_preset(Control::LayoutPreset p_preset) {
	List<Node *> selection = editor_selection->get_selected_node_list();

	undo_redo->create_action(TTR("Change Anchors and Margins"));

	for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {

		Control *control = Object::cast_to<Control>(E->get());
		if (control) {
			undo_redo->add_do_method(control, "set_anchors_preset", p_preset);
			switch (p_preset) {
				case PRESET_TOP_LEFT:
				case PRESET_TOP_RIGHT:
				case PRESET_BOTTOM_LEFT:
				case PRESET_BOTTOM_RIGHT:
				case PRESET_CENTER_LEFT:
				case PRESET_CENTER_TOP:
				case PRESET_CENTER_RIGHT:
				case PRESET_CENTER_BOTTOM:
				case PRESET_CENTER:
					undo_redo->add_do_method(control, "set_margins_preset", p_preset, Control::PRESET_MODE_KEEP_SIZE);
					break;
				case PRESET_LEFT_WIDE:
				case PRESET_TOP_WIDE:
				case PRESET_RIGHT_WIDE:
				case PRESET_BOTTOM_WIDE:
				case PRESET_VCENTER_WIDE:
				case PRESET_HCENTER_WIDE:
				case PRESET_WIDE:
					undo_redo->add_do_method(control, "set_margins_preset", p_preset, Control::PRESET_MODE_MINSIZE);
					break;
			}
			undo_redo->add_undo_method(control, "_edit_set_state", control->_edit_get_state());
		}
	}

	undo_redo->commit_action();
}

void CanvasItemEditor::_set_anchors_preset(Control::LayoutPreset p_preset) {
	List<Node *> selection = editor_selection->get_selected_node_list();

	undo_redo->create_action(TTR("Change Anchors"));
	for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {

		Control *control = Object::cast_to<Control>(E->get());
		if (control) {
			undo_redo->add_do_method(control, "set_anchors_preset", p_preset);
			undo_redo->add_undo_method(control, "_edit_set_state", control->_edit_get_state());
		}
	}

	undo_redo->commit_action();
}

void CanvasItemEditor::_zoom_on_position(float p_zoom, Point2 p_position) {
	if (p_zoom < MIN_ZOOM || p_zoom > MAX_ZOOM)
		return;

	float prev_zoom = zoom;
	zoom = p_zoom;
	Point2 ofs = p_position;
	ofs = ofs / prev_zoom - ofs / zoom;
	view_offset.x = Math::round(view_offset.x + ofs.x);
	view_offset.y = Math::round(view_offset.y + ofs.y);

	_update_scrollbars();
	viewport->update();
}

void CanvasItemEditor::_button_zoom_minus() {
	_zoom_on_position(zoom / 1.5, viewport_scrollable->get_size() / 2.0);
}

void CanvasItemEditor::_button_zoom_reset() {
	_zoom_on_position(1.0, viewport_scrollable->get_size() / 2.0);
}

void CanvasItemEditor::_button_zoom_plus() {
	_zoom_on_position(zoom * 1.5, viewport_scrollable->get_size() / 2.0);
}

void CanvasItemEditor::_button_toggle_snap(bool p_status) {
	snap_active = p_status;
	viewport->update();
}

void CanvasItemEditor::_button_tool_select(int p_index) {

	ToolButton *tb[TOOL_MAX] = { select_button, list_select_button, move_button, rotate_button, pivot_button, pan_button };
	for (int i = 0; i < TOOL_MAX; i++) {
		tb[i]->set_pressed(i == p_index);
	}

	viewport->update();
	tool = (Tool)p_index;
}

void CanvasItemEditor::_popup_callback(int p_op) {

	last_option = MenuOption(p_op);
	switch (p_op) {

		case SHOW_GRID: {
			show_grid = !show_grid;
			int idx = view_menu->get_popup()->get_item_index(SHOW_GRID);
			view_menu->get_popup()->set_item_checked(idx, show_grid);
			viewport->update();
		} break;
		case SHOW_ORIGIN: {
			show_origin = !show_origin;
			int idx = view_menu->get_popup()->get_item_index(SHOW_ORIGIN);
			view_menu->get_popup()->set_item_checked(idx, show_origin);
			viewport->update();
		} break;
		case SHOW_VIEWPORT: {
			show_viewport = !show_viewport;
			int idx = view_menu->get_popup()->get_item_index(SHOW_VIEWPORT);
			view_menu->get_popup()->set_item_checked(idx, show_viewport);
			viewport->update();
		} break;
		case SNAP_USE_NODE_PARENT: {
			snap_node_parent = !snap_node_parent;
			int idx = smartsnap_config_popup->get_item_index(SNAP_USE_NODE_PARENT);
			smartsnap_config_popup->set_item_checked(idx, snap_node_parent);
		} break;
		case SNAP_USE_NODE_ANCHORS: {
			snap_node_anchors = !snap_node_anchors;
			int idx = smartsnap_config_popup->get_item_index(SNAP_USE_NODE_ANCHORS);
			smartsnap_config_popup->set_item_checked(idx, snap_node_anchors);
		} break;
		case SNAP_USE_NODE_SIDES: {
			snap_node_sides = !snap_node_sides;
			int idx = smartsnap_config_popup->get_item_index(SNAP_USE_NODE_SIDES);
			smartsnap_config_popup->set_item_checked(idx, snap_node_sides);
		} break;
		case SNAP_USE_NODE_CENTER: {
			snap_node_center = !snap_node_center;
			int idx = smartsnap_config_popup->get_item_index(SNAP_USE_NODE_CENTER);
			smartsnap_config_popup->set_item_checked(idx, snap_node_center);
		} break;
		case SNAP_USE_OTHER_NODES: {
			snap_other_nodes = !snap_other_nodes;
			int idx = smartsnap_config_popup->get_item_index(SNAP_USE_OTHER_NODES);
			smartsnap_config_popup->set_item_checked(idx, snap_other_nodes);
		} break;
		case SNAP_USE_GUIDES: {
			snap_guides = !snap_guides;
			int idx = smartsnap_config_popup->get_item_index(SNAP_USE_GUIDES);
			smartsnap_config_popup->set_item_checked(idx, snap_guides);
		} break;
		case SNAP_USE_GRID: {
			snap_grid = !snap_grid;
			int idx = snap_config_menu->get_popup()->get_item_index(SNAP_USE_GRID);
			snap_config_menu->get_popup()->set_item_checked(idx, snap_grid);
		} break;
		case SNAP_USE_ROTATION: {
			snap_rotation = !snap_rotation;
			int idx = snap_config_menu->get_popup()->get_item_index(SNAP_USE_ROTATION);
			snap_config_menu->get_popup()->set_item_checked(idx, snap_rotation);
		} break;
		case SNAP_RELATIVE: {
			snap_relative = !snap_relative;
			int idx = snap_config_menu->get_popup()->get_item_index(SNAP_RELATIVE);
			snap_config_menu->get_popup()->set_item_checked(idx, snap_relative);
			viewport->update();
		} break;
		case SNAP_USE_PIXEL: {
			snap_pixel = !snap_pixel;
			int idx = snap_config_menu->get_popup()->get_item_index(SNAP_USE_PIXEL);
			snap_config_menu->get_popup()->set_item_checked(idx, snap_pixel);
		} break;
		case SNAP_CONFIGURE: {
			((SnapDialog *)snap_dialog)->set_fields(grid_offset, grid_step, snap_rotation_offset, snap_rotation_step);
			snap_dialog->popup_centered(Size2(220, 160));
		} break;
		case SKELETON_SHOW_BONES: {
			skeleton_show_bones = !skeleton_show_bones;
			int idx = skeleton_menu->get_popup()->get_item_index(SKELETON_SHOW_BONES);
			skeleton_menu->get_popup()->set_item_checked(idx, skeleton_show_bones);
			viewport->update();
		} break;
		case SHOW_HELPERS: {
			show_helpers = !show_helpers;
			int idx = view_menu->get_popup()->get_item_index(SHOW_HELPERS);
			view_menu->get_popup()->set_item_checked(idx, show_helpers);
			viewport->update();
		} break;
		case SHOW_RULERS: {
			show_rulers = !show_rulers;
			int idx = view_menu->get_popup()->get_item_index(SHOW_RULERS);
			view_menu->get_popup()->set_item_checked(idx, show_rulers);
			viewport->update();
		} break;
		case SHOW_GUIDES: {
			show_guides = !show_guides;
			int idx = view_menu->get_popup()->get_item_index(SHOW_GUIDES);
			view_menu->get_popup()->set_item_checked(idx, show_guides);
			viewport->update();
		} break;
		case LOCK_SELECTED: {
			List<Node *> selection = editor_selection->get_selected_node_list();
			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->get());
				if (!canvas_item || !canvas_item->is_inside_tree())
					continue;
				if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
					continue;

				canvas_item->set_meta("_edit_lock_", true);
				emit_signal("item_lock_status_changed");
			}
			viewport->update();
		} break;
		case UNLOCK_SELECTED: {
			List<Node *> selection = editor_selection->get_selected_node_list();
			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->get());
				if (!canvas_item || !canvas_item->is_inside_tree())
					continue;
				if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
					continue;

				canvas_item->set_meta("_edit_lock_", Variant());
				emit_signal("item_lock_status_changed");
			}
			viewport->update();
		} break;
		case GROUP_SELECTED: {
			List<Node *> selection = editor_selection->get_selected_node_list();
			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->get());
				if (!canvas_item || !canvas_item->is_inside_tree())
					continue;
				if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
					continue;

				canvas_item->set_meta("_edit_group_", true);
				emit_signal("item_group_status_changed");
			}
			viewport->update();
		} break;
		case UNGROUP_SELECTED: {
			List<Node *> selection = editor_selection->get_selected_node_list();
			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {
				CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->get());
				if (!canvas_item || !canvas_item->is_inside_tree())
					continue;
				if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
					continue;

				canvas_item->set_meta("_edit_group_", Variant());
				emit_signal("item_group_status_changed");
			}
			viewport->update();
		} break;
		case ANCHORS_AND_MARGINS_PRESET_TOP_LEFT: {
			_set_anchors_and_margins_preset(PRESET_TOP_LEFT);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_TOP_RIGHT: {
			_set_anchors_and_margins_preset(PRESET_TOP_RIGHT);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_BOTTOM_LEFT: {
			_set_anchors_and_margins_preset(PRESET_BOTTOM_LEFT);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_BOTTOM_RIGHT: {
			_set_anchors_and_margins_preset(PRESET_BOTTOM_RIGHT);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_CENTER_LEFT: {
			_set_anchors_and_margins_preset(PRESET_CENTER_LEFT);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_CENTER_RIGHT: {
			_set_anchors_and_margins_preset(PRESET_CENTER_RIGHT);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_CENTER_TOP: {
			_set_anchors_and_margins_preset(PRESET_CENTER_TOP);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_CENTER_BOTTOM: {
			_set_anchors_and_margins_preset(PRESET_CENTER_BOTTOM);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_CENTER: {
			_set_anchors_and_margins_preset(PRESET_CENTER);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_TOP_WIDE: {
			_set_anchors_and_margins_preset(PRESET_TOP_WIDE);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_LEFT_WIDE: {
			_set_anchors_and_margins_preset(PRESET_LEFT_WIDE);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_RIGHT_WIDE: {
			_set_anchors_and_margins_preset(PRESET_RIGHT_WIDE);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_BOTTOM_WIDE: {
			_set_anchors_and_margins_preset(PRESET_BOTTOM_WIDE);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_VCENTER_WIDE: {
			_set_anchors_and_margins_preset(PRESET_VCENTER_WIDE);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_HCENTER_WIDE: {
			_set_anchors_and_margins_preset(PRESET_HCENTER_WIDE);
		} break;
		case ANCHORS_AND_MARGINS_PRESET_WIDE: {
			_set_anchors_and_margins_preset(Control::PRESET_WIDE);
		} break;

		case ANCHORS_PRESET_TOP_LEFT: {
			_set_anchors_preset(PRESET_TOP_LEFT);
		} break;
		case ANCHORS_PRESET_TOP_RIGHT: {
			_set_anchors_preset(PRESET_TOP_RIGHT);
		} break;
		case ANCHORS_PRESET_BOTTOM_LEFT: {
			_set_anchors_preset(PRESET_BOTTOM_LEFT);
		} break;
		case ANCHORS_PRESET_BOTTOM_RIGHT: {
			_set_anchors_preset(PRESET_BOTTOM_RIGHT);
		} break;
		case ANCHORS_PRESET_CENTER_LEFT: {
			_set_anchors_preset(PRESET_CENTER_LEFT);
		} break;
		case ANCHORS_PRESET_CENTER_RIGHT: {
			_set_anchors_preset(PRESET_CENTER_RIGHT);
		} break;
		case ANCHORS_PRESET_CENTER_TOP: {
			_set_anchors_preset(PRESET_CENTER_TOP);
		} break;
		case ANCHORS_PRESET_CENTER_BOTTOM: {
			_set_anchors_preset(PRESET_CENTER_BOTTOM);
		} break;
		case ANCHORS_PRESET_CENTER: {
			_set_anchors_preset(PRESET_CENTER);
		} break;
		case ANCHORS_PRESET_TOP_WIDE: {
			_set_anchors_preset(PRESET_TOP_WIDE);
		} break;
		case ANCHORS_PRESET_LEFT_WIDE: {
			_set_anchors_preset(PRESET_LEFT_WIDE);
		} break;
		case ANCHORS_PRESET_RIGHT_WIDE: {
			_set_anchors_preset(PRESET_RIGHT_WIDE);
		} break;
		case ANCHORS_PRESET_BOTTOM_WIDE: {
			_set_anchors_preset(PRESET_BOTTOM_WIDE);
		} break;
		case ANCHORS_PRESET_VCENTER_WIDE: {
			_set_anchors_preset(PRESET_VCENTER_WIDE);
		} break;
		case ANCHORS_PRESET_HCENTER_WIDE: {
			_set_anchors_preset(PRESET_HCENTER_WIDE);
		} break;
		case ANCHORS_PRESET_WIDE: {
			_set_anchors_preset(Control::PRESET_WIDE);
		} break;

		case ANIM_INSERT_KEY:
		case ANIM_INSERT_KEY_EXISTING: {

			bool existing = p_op == ANIM_INSERT_KEY_EXISTING;

			Map<Node *, Object *> &selection = editor_selection->get_selection();

			for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {

				CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->key());
				if (!canvas_item || !canvas_item->is_visible_in_tree())
					continue;

				if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
					continue;

				if (Object::cast_to<Node2D>(canvas_item)) {
					Node2D *n2d = Object::cast_to<Node2D>(canvas_item);

					if (key_pos)
						AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(n2d, "position", n2d->get_position(), existing);
					if (key_rot)
						AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(n2d, "rotation_degrees", Math::rad2deg(n2d->get_rotation()), existing);
					if (key_scale)
						AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(n2d, "scale", n2d->get_scale(), existing);

					if (n2d->has_meta("_edit_bone_") && n2d->get_parent_item()) {
						//look for an IK chain
						List<Node2D *> ik_chain;

						Node2D *n = Object::cast_to<Node2D>(n2d->get_parent_item());
						bool has_chain = false;

						while (n) {

							ik_chain.push_back(n);
							if (n->has_meta("_edit_ik_")) {
								has_chain = true;
								break;
							}

							if (!n->get_parent_item())
								break;
							n = Object::cast_to<Node2D>(n->get_parent_item());
						}

						if (has_chain && ik_chain.size()) {

							for (List<Node2D *>::Element *F = ik_chain.front(); F; F = F->next()) {

								if (key_pos)
									AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(F->get(), "position", F->get()->get_position(), existing);
								if (key_rot)
									AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(F->get(), "rotation_degrees", Math::rad2deg(F->get()->get_rotation()), existing);
								if (key_scale)
									AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(F->get(), "scale", F->get()->get_scale(), existing);
							}
						}
					}

				} else if (Object::cast_to<Control>(canvas_item)) {

					Control *ctrl = Object::cast_to<Control>(canvas_item);

					if (key_pos)
						AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(ctrl, "rect_position", ctrl->get_position(), existing);
					if (key_rot)
						AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(ctrl, "rect_rotation", ctrl->get_rotation_degrees(), existing);
					if (key_scale)
						AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(ctrl, "rect_size", ctrl->get_size(), existing);
				}
			}

		} break;
		case ANIM_INSERT_POS: {

			key_pos = key_loc_button->is_pressed();
		} break;
		case ANIM_INSERT_ROT: {

			key_rot = key_rot_button->is_pressed();
		} break;
		case ANIM_INSERT_SCALE: {

			key_scale = key_scale_button->is_pressed();
		} break;
		case ANIM_COPY_POSE: {

			pose_clipboard.clear();

			Map<Node *, Object *> &selection = editor_selection->get_selection();

			for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {

				CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->key());
				if (!canvas_item || !canvas_item->is_visible_in_tree())
					continue;

				if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
					continue;

				if (Object::cast_to<Node2D>(canvas_item)) {

					Node2D *n2d = Object::cast_to<Node2D>(canvas_item);
					PoseClipboard pc;
					pc.pos = n2d->get_position();
					pc.rot = n2d->get_rotation();
					pc.scale = n2d->get_scale();
					pc.id = n2d->get_instance_id();
					pose_clipboard.push_back(pc);
				}
			}

		} break;
		case ANIM_PASTE_POSE: {

			if (!pose_clipboard.size())
				break;

			undo_redo->create_action(TTR("Paste Pose"));
			for (List<PoseClipboard>::Element *E = pose_clipboard.front(); E; E = E->next()) {

				Node2D *n2d = Object::cast_to<Node2D>(ObjectDB::get_instance(E->get().id));
				if (!n2d)
					continue;
				undo_redo->add_do_method(n2d, "set_position", E->get().pos);
				undo_redo->add_do_method(n2d, "set_rotation", E->get().rot);
				undo_redo->add_do_method(n2d, "set_scale", E->get().scale);
				undo_redo->add_undo_method(n2d, "set_position", n2d->get_position());
				undo_redo->add_undo_method(n2d, "set_rotation", n2d->get_rotation());
				undo_redo->add_undo_method(n2d, "set_scale", n2d->get_scale());
			}
			undo_redo->commit_action();

		} break;
		case ANIM_CLEAR_POSE: {

			Map<Node *, Object *> &selection = editor_selection->get_selection();

			for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {

				CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->key());
				if (!canvas_item || !canvas_item->is_visible_in_tree())
					continue;

				if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
					continue;

				if (Object::cast_to<Node2D>(canvas_item)) {
					Node2D *n2d = Object::cast_to<Node2D>(canvas_item);

					if (key_pos)
						n2d->set_position(Vector2());
					if (key_rot)
						n2d->set_rotation(0);
					if (key_scale)
						n2d->set_scale(Vector2(1, 1));
				} else if (Object::cast_to<Control>(canvas_item)) {

					Control *ctrl = Object::cast_to<Control>(canvas_item);

					if (key_pos)
						ctrl->set_position(Point2());
					/*
                                   if (key_scale)
				   AnimationPlayerEditor::singleton->get_track_editor()->insert_node_value_key(ctrl,"rect/size",ctrl->get_size());
                                   */
				}
			}

		} break;
		case VIEW_CENTER_TO_SELECTION:
		case VIEW_FRAME_TO_SELECTION: {

			_focus_selection(p_op);

		} break;
		case SKELETON_MAKE_BONES: {

			Map<Node *, Object *> &selection = editor_selection->get_selection();

			for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {

				Node2D *n2d = Object::cast_to<Node2D>(E->key());
				if (!n2d)
					continue;
				if (!n2d->is_visible_in_tree())
					continue;
				if (!n2d->get_parent_item())
					continue;

				n2d->set_meta("_edit_bone_", true);
				if (!skeleton_show_bones)
					skeleton_menu->get_popup()->activate_item(skeleton_menu->get_popup()->get_item_index(SKELETON_SHOW_BONES));
			}
			viewport->update();

		} break;
		case SKELETON_CLEAR_BONES: {

			Map<Node *, Object *> &selection = editor_selection->get_selection();

			for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {

				Node2D *n2d = Object::cast_to<Node2D>(E->key());
				if (!n2d)
					continue;
				if (!n2d->is_visible_in_tree())
					continue;

				n2d->set_meta("_edit_bone_", Variant());
				if (!skeleton_show_bones)
					skeleton_menu->get_popup()->activate_item(skeleton_menu->get_popup()->get_item_index(SKELETON_SHOW_BONES));
			}
			viewport->update();

		} break;
		case SKELETON_SET_IK_CHAIN: {

			List<Node *> selection = editor_selection->get_selected_node_list();

			for (List<Node *>::Element *E = selection.front(); E; E = E->next()) {

				CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->get());
				if (!canvas_item || !canvas_item->is_visible_in_tree())
					continue;

				if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
					continue;

				canvas_item->set_meta("_edit_ik_", true);
				if (!skeleton_show_bones)
					skeleton_menu->get_popup()->activate_item(skeleton_menu->get_popup()->get_item_index(SKELETON_SHOW_BONES));
			}

			viewport->update();

		} break;
		case SKELETON_CLEAR_IK_CHAIN: {

			Map<Node *, Object *> &selection = editor_selection->get_selection();

			for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {

				CanvasItem *n2d = Object::cast_to<CanvasItem>(E->key());
				if (!n2d)
					continue;
				if (!n2d->is_visible_in_tree())
					continue;

				n2d->set_meta("_edit_ik_", Variant());
				if (!skeleton_show_bones)
					skeleton_menu->get_popup()->activate_item(skeleton_menu->get_popup()->get_item_index(SKELETON_SHOW_BONES));
			}
			viewport->update();

		} break;
	}
}

void CanvasItemEditor::_focus_selection(int p_op) {
	Vector2 center(0.f, 0.f);
	Rect2 rect;
	int count = 0;

	Map<Node *, Object *> &selection = editor_selection->get_selection();
	for (Map<Node *, Object *>::Element *E = selection.front(); E; E = E->next()) {
		CanvasItem *canvas_item = Object::cast_to<CanvasItem>(E->key());
		if (!canvas_item) continue;
		if (canvas_item->get_viewport() != EditorNode::get_singleton()->get_scene_root())
			continue;

		// counting invisible items, for now
		//if (!canvas_item->is_visible_in_tree()) continue;
		++count;

		Rect2 item_rect;
		if (canvas_item->_edit_use_rect()) {
			item_rect = canvas_item->_edit_get_rect();
		} else {
			item_rect = Rect2();
		}

		Vector2 pos = canvas_item->get_global_transform().get_origin();
		Vector2 scale = canvas_item->get_global_transform().get_scale();
		real_t angle = canvas_item->get_global_transform().get_rotation();

		Transform2D t(angle, Vector2(0.f, 0.f));
		item_rect = t.xform(item_rect);
		Rect2 canvas_item_rect(pos + scale * item_rect.position, scale * item_rect.size);
		if (count == 1) {
			rect = canvas_item_rect;
		} else {
			rect = rect.merge(canvas_item_rect);
		}
	};
	if (count == 0) return;

	if (p_op == VIEW_CENTER_TO_SELECTION) {

		center = rect.position + rect.size / 2;
		Vector2 offset = viewport->get_size() / 2 - editor->get_scene_root()->get_global_canvas_transform().xform(center);
		view_offset.x -= offset.x / zoom;
		view_offset.y -= offset.y / zoom;
		_update_scrollbars();
		viewport->update();

	} else { // VIEW_FRAME_TO_SELECTION

		if (rect.size.x > CMP_EPSILON && rect.size.y > CMP_EPSILON) {
			float scale_x = viewport->get_size().x / rect.size.x;
			float scale_y = viewport->get_size().y / rect.size.y;
			zoom = scale_x < scale_y ? scale_x : scale_y;
			zoom *= 0.90;
			viewport->update();
			call_deferred("_popup_callback", VIEW_CENTER_TO_SELECTION);
		}
	}
}

void CanvasItemEditor::_bind_methods() {

	ClassDB::bind_method("_button_zoom_minus", &CanvasItemEditor::_button_zoom_minus);
	ClassDB::bind_method("_button_zoom_reset", &CanvasItemEditor::_button_zoom_reset);
	ClassDB::bind_method("_button_zoom_plus", &CanvasItemEditor::_button_zoom_plus);
	ClassDB::bind_method("_button_toggle_snap", &CanvasItemEditor::_button_toggle_snap);
	ClassDB::bind_method("_update_scroll", &CanvasItemEditor::_update_scroll);
	ClassDB::bind_method("_update_scrollbars", &CanvasItemEditor::_update_scrollbars);
	ClassDB::bind_method("_popup_callback", &CanvasItemEditor::_popup_callback);
	ClassDB::bind_method("_get_editor_data", &CanvasItemEditor::_get_editor_data);
	ClassDB::bind_method("_button_tool_select", &CanvasItemEditor::_button_tool_select);
	ClassDB::bind_method("_keying_changed", &CanvasItemEditor::_keying_changed);
	ClassDB::bind_method("_unhandled_key_input", &CanvasItemEditor::_unhandled_key_input);
	ClassDB::bind_method("_draw_viewport", &CanvasItemEditor::_draw_viewport);
	ClassDB::bind_method("_gui_input_viewport", &CanvasItemEditor::_gui_input_viewport);
	ClassDB::bind_method("_snap_changed", &CanvasItemEditor::_snap_changed);
	ClassDB::bind_method("_update_bone_list", &CanvasItemEditor::_update_bone_list);
	ClassDB::bind_method("_tree_changed", &CanvasItemEditor::_tree_changed);

	ClassDB::bind_method(D_METHOD("_selection_result_pressed"), &CanvasItemEditor::_selection_result_pressed);
	ClassDB::bind_method(D_METHOD("_selection_menu_hide"), &CanvasItemEditor::_selection_menu_hide);
	ClassDB::bind_method(D_METHOD("set_state"), &CanvasItemEditor::set_state);

	ADD_SIGNAL(MethodInfo("item_lock_status_changed"));
	ADD_SIGNAL(MethodInfo("item_group_status_changed"));
}

Dictionary CanvasItemEditor::get_state() const {

	Dictionary state;
	state["zoom"] = zoom;
	state["ofs"] = view_offset;
	state["grid_offset"] = grid_offset;
	state["grid_step"] = grid_step;
	state["snap_rotation_offset"] = snap_rotation_offset;
	state["snap_rotation_step"] = snap_rotation_step;
	state["snap_active"] = snap_active;
	state["snap_node_parent"] = snap_node_parent;
	state["snap_node_anchors"] = snap_node_anchors;
	state["snap_node_sides"] = snap_node_sides;
	state["snap_node_center"] = snap_node_center;
	state["snap_other_nodes"] = snap_other_nodes;
	state["snap_grid"] = snap_grid;
	state["snap_guides"] = snap_guides;
	state["show_grid"] = show_grid;
	state["show_origin"] = show_origin;
	state["show_viewport"] = show_viewport;
	state["show_rulers"] = show_rulers;
	state["show_guides"] = show_guides;
	state["show_helpers"] = show_helpers;
	state["snap_rotation"] = snap_rotation;
	state["snap_relative"] = snap_relative;
	state["snap_pixel"] = snap_pixel;
	state["skeleton_show_bones"] = skeleton_show_bones;
	return state;
}

void CanvasItemEditor::set_state(const Dictionary &p_state) {

	Dictionary state = p_state;
	if (state.has("zoom")) {
		zoom = p_state["zoom"];
	}

	if (state.has("ofs")) {
		view_offset = p_state["ofs"];
		previous_update_view_offset = view_offset;
		_update_scrollbars();
	}

	if (state.has("grid_offset")) {
		grid_offset = state["grid_offset"];
	}

	if (state.has("grid_step")) {
		grid_step = state["grid_step"];
	}

	if (state.has("snap_rotation_step")) {
		snap_rotation_step = state["snap_rotation_step"];
	}

	if (state.has("snap_rotation_offset")) {
		snap_rotation_offset = state["snap_rotation_offset"];
	}

	if (state.has("snap_active")) {
		snap_active = state["snap_active"];
		snap_button->set_pressed(snap_active);
	}

	if (state.has("snap_node_parent")) {
		snap_node_parent = state["snap_node_parent"];
		int idx = smartsnap_config_popup->get_item_index(SNAP_USE_NODE_PARENT);
		smartsnap_config_popup->set_item_checked(idx, snap_node_parent);
	}

	if (state.has("snap_node_anchors")) {
		snap_node_anchors = state["snap_node_anchors"];
		int idx = smartsnap_config_popup->get_item_index(SNAP_USE_NODE_ANCHORS);
		smartsnap_config_popup->set_item_checked(idx, snap_node_anchors);
	}

	if (state.has("snap_node_sides")) {
		snap_node_sides = state["snap_node_sides"];
		int idx = smartsnap_config_popup->get_item_index(SNAP_USE_NODE_SIDES);
		smartsnap_config_popup->set_item_checked(idx, snap_node_sides);
	}

	if (state.has("snap_node_center")) {
		snap_node_center = state["snap_node_center"];
		int idx = smartsnap_config_popup->get_item_index(SNAP_USE_NODE_CENTER);
		smartsnap_config_popup->set_item_checked(idx, snap_node_center);
	}

	if (state.has("snap_other_nodes")) {
		snap_other_nodes = state["snap_other_nodes"];
		int idx = smartsnap_config_popup->get_item_index(SNAP_USE_OTHER_NODES);
		smartsnap_config_popup->set_item_checked(idx, snap_other_nodes);
	}

	if (state.has("snap_guides")) {
		snap_guides = state["snap_guides"];
		int idx = smartsnap_config_popup->get_item_index(SNAP_USE_GUIDES);
		smartsnap_config_popup->set_item_checked(idx, snap_guides);
	}

	if (state.has("snap_grid")) {
		snap_grid = state["snap_grid"];
		int idx = snap_config_menu->get_popup()->get_item_index(SNAP_USE_GRID);
		snap_config_menu->get_popup()->set_item_checked(idx, snap_grid);
	}

	if (state.has("show_grid")) {
		show_grid = state["show_grid"];
		int idx = view_menu->get_popup()->get_item_index(SHOW_GRID);
		view_menu->get_popup()->set_item_checked(idx, show_grid);
	}

	if (state.has("show_origin")) {
		show_origin = state["show_origin"];
		int idx = view_menu->get_popup()->get_item_index(SHOW_ORIGIN);
		view_menu->get_popup()->set_item_checked(idx, show_origin);
	}

	if (state.has("show_viewport")) {
		show_viewport = state["show_viewport"];
		int idx = view_menu->get_popup()->get_item_index(SHOW_VIEWPORT);
		view_menu->get_popup()->set_item_checked(idx, show_viewport);
	}

	if (state.has("show_rulers")) {
		show_rulers = state["show_rulers"];
		int idx = view_menu->get_popup()->get_item_index(SHOW_RULERS);
		view_menu->get_popup()->set_item_checked(idx, show_rulers);
	}

	if (state.has("show_guides")) {
		show_guides = state["show_guides"];
		int idx = view_menu->get_popup()->get_item_index(SHOW_GUIDES);
		view_menu->get_popup()->set_item_checked(idx, show_guides);
	}

	if (state.has("show_helpers")) {
		show_helpers = state["show_helpers"];
		int idx = view_menu->get_popup()->get_item_index(SHOW_HELPERS);
		view_menu->get_popup()->set_item_checked(idx, show_helpers);
	}

	if (state.has("snap_rotation")) {
		snap_rotation = state["snap_rotation"];
		int idx = snap_config_menu->get_popup()->get_item_index(SNAP_USE_ROTATION);
		snap_config_menu->get_popup()->set_item_checked(idx, snap_rotation);
	}

	if (state.has("snap_relative")) {
		snap_relative = state["snap_relative"];
		int idx = snap_config_menu->get_popup()->get_item_index(SNAP_RELATIVE);
		snap_config_menu->get_popup()->set_item_checked(idx, snap_relative);
	}

	if (state.has("snap_pixel")) {
		snap_pixel = state["snap_pixel"];
		int idx = snap_config_menu->get_popup()->get_item_index(SNAP_USE_PIXEL);
		snap_config_menu->get_popup()->set_item_checked(idx, snap_pixel);
	}

	if (state.has("skeleton_show_bones")) {
		skeleton_show_bones = state["skeleton_show_bones"];
		int idx = skeleton_menu->get_popup()->get_item_index(SKELETON_SHOW_BONES);
		skeleton_menu->get_popup()->set_item_checked(idx, skeleton_show_bones);
	}

	viewport->update();
}

void CanvasItemEditor::add_control_to_menu_panel(Control *p_control) {

	hb->add_child(p_control);
}

void CanvasItemEditor::remove_control_from_menu_panel(Control *p_control) {

	hb->remove_child(p_control);
}

HSplitContainer *CanvasItemEditor::get_palette_split() {

	return palette_split;
}

VSplitContainer *CanvasItemEditor::get_bottom_split() {

	return bottom_split;
}

void CanvasItemEditor::focus_selection() {
	_focus_selection(VIEW_CENTER_TO_SELECTION);
}

CanvasItemEditor::CanvasItemEditor(EditorNode *p_editor) {

	bone_list_dirty = false;
	tool = TOOL_SELECT;
	undo_redo = p_editor->get_undo_redo();
	editor = p_editor;
	editor_selection = p_editor->get_editor_selection();
	editor_selection->add_editor_plugin(this);
	editor_selection->connect("selection_changed", this, "update");

	hb = memnew(HBoxContainer);
	add_child(hb);
	hb->set_anchors_and_margins_preset(Control::PRESET_WIDE);

	bottom_split = memnew(VSplitContainer);
	add_child(bottom_split);
	bottom_split->set_v_size_flags(SIZE_EXPAND_FILL);

	palette_split = memnew(HSplitContainer);
	bottom_split->add_child(palette_split);
	palette_split->set_v_size_flags(SIZE_EXPAND_FILL);

	viewport_scrollable = memnew(Control);
	palette_split->add_child(viewport_scrollable);
	viewport_scrollable->set_mouse_filter(MOUSE_FILTER_PASS);
	viewport_scrollable->set_clip_contents(true);
	viewport_scrollable->set_v_size_flags(SIZE_EXPAND_FILL);
	viewport_scrollable->set_h_size_flags(SIZE_EXPAND_FILL);
	viewport_scrollable->connect("draw", this, "_update_scrollbars");

	ViewportContainer *scene_tree = memnew(ViewportContainer);
	viewport_scrollable->add_child(scene_tree);
	scene_tree->set_stretch(true);
	scene_tree->set_anchors_and_margins_preset(Control::PRESET_WIDE);
	scene_tree->add_child(p_editor->get_scene_root());

	viewport = memnew(CanvasItemEditorViewport(p_editor, this));
	viewport_scrollable->add_child(viewport);
	viewport->set_mouse_filter(MOUSE_FILTER_PASS);
	viewport->set_anchors_and_margins_preset(Control::PRESET_WIDE);
	viewport->set_clip_contents(true);
	viewport->set_focus_mode(FOCUS_ALL);
	viewport->connect("draw", this, "_draw_viewport");
	viewport->connect("gui_input", this, "_gui_input_viewport");

	h_scroll = memnew(HScrollBar);
	viewport->add_child(h_scroll);
	h_scroll->connect("value_changed", this, "_update_scroll");
	h_scroll->hide();

	v_scroll = memnew(VScrollBar);
	viewport->add_child(v_scroll);
	v_scroll->connect("value_changed", this, "_update_scroll");
	v_scroll->hide();

	zoom_hb = memnew(HBoxContainer);
	viewport->add_child(zoom_hb);
	zoom_hb->set_begin(Point2(5, 5));

	zoom_minus = memnew(ToolButton);
	zoom_hb->add_child(zoom_minus);
	zoom_minus->connect("pressed", this, "_button_zoom_minus");
	zoom_minus->set_shortcut(ED_SHORTCUT("canvas_item_editor/zoom_minus", TTR("Zoom out"), KEY_MASK_CMD | KEY_MINUS));
	zoom_minus->set_focus_mode(FOCUS_NONE);

	zoom_reset = memnew(ToolButton);
	zoom_hb->add_child(zoom_reset);
	zoom_reset->connect("pressed", this, "_button_zoom_reset");
	zoom_reset->set_shortcut(ED_SHORTCUT("canvas_item_editor/zoom_reset", TTR("Zoom reset"), KEY_MASK_CMD | KEY_0));
	zoom_reset->set_focus_mode(FOCUS_NONE);

	zoom_plus = memnew(ToolButton);
	zoom_hb->add_child(zoom_plus);
	zoom_plus->connect("pressed", this, "_button_zoom_plus");
	zoom_plus->set_shortcut(ED_SHORTCUT("canvas_item_editor/zoom_plus", TTR("Zoom in"), KEY_MASK_CMD | KEY_PLUS));
	zoom_plus->set_focus_mode(FOCUS_NONE);

	updating_scroll = false;

	select_button = memnew(ToolButton);
	hb->add_child(select_button);
	select_button->set_toggle_mode(true);
	select_button->connect("pressed", this, "_button_tool_select", make_binds(TOOL_SELECT));
	select_button->set_pressed(true);
	select_button->set_shortcut(ED_SHORTCUT("canvas_item_editor/select_mode", TTR("Select Mode"), KEY_Q));
	select_button->set_tooltip(keycode_get_string(KEY_MASK_CMD) + TTR("Drag: Rotate") + "\n" + TTR("Alt+Drag: Move") + "\n" + TTR("Press 'v' to Change Pivot, 'Shift+v' to Drag Pivot (while moving).") + "\n" + TTR("Alt+RMB: Depth list selection"));

	move_button = memnew(ToolButton);
	hb->add_child(move_button);
	move_button->set_toggle_mode(true);
	move_button->connect("pressed", this, "_button_tool_select", make_binds(TOOL_MOVE));
	move_button->set_shortcut(ED_SHORTCUT("canvas_item_editor/move_mode", TTR("Move Mode"), KEY_W));
	move_button->set_tooltip(TTR("Move Mode"));

	rotate_button = memnew(ToolButton);
	hb->add_child(rotate_button);
	rotate_button->set_toggle_mode(true);
	rotate_button->connect("pressed", this, "_button_tool_select", make_binds(TOOL_ROTATE));
	rotate_button->set_shortcut(ED_SHORTCUT("canvas_item_editor/rotate_mode", TTR("Rotate Mode"), KEY_E));
	rotate_button->set_tooltip(TTR("Rotate Mode"));

	hb->add_child(memnew(VSeparator));

	list_select_button = memnew(ToolButton);
	hb->add_child(list_select_button);
	list_select_button->set_toggle_mode(true);
	list_select_button->connect("pressed", this, "_button_tool_select", make_binds(TOOL_LIST_SELECT));
	list_select_button->set_tooltip(TTR("Show a list of all objects at the position clicked\n(same as Alt+RMB in select mode)."));

	pivot_button = memnew(ToolButton);
	hb->add_child(pivot_button);
	pivot_button->set_toggle_mode(true);
	pivot_button->connect("pressed", this, "_button_tool_select", make_binds(TOOL_EDIT_PIVOT));
	pivot_button->set_tooltip(TTR("Click to change object's rotation pivot."));

	pan_button = memnew(ToolButton);
	hb->add_child(pan_button);
	pan_button->set_toggle_mode(true);
	pan_button->connect("pressed", this, "_button_tool_select", make_binds(TOOL_PAN));
	pan_button->set_tooltip(TTR("Pan Mode"));

	hb->add_child(memnew(VSeparator));

	snap_button = memnew(ToolButton);
	hb->add_child(snap_button);
	snap_button->set_toggle_mode(true);
	snap_button->connect("toggled", this, "_button_toggle_snap");
	snap_button->set_tooltip(TTR("Toggle snapping."));
	snap_button->set_shortcut(ED_SHORTCUT("canvas_item_editor/use_snap", TTR("Use Snap"), KEY_S));

	snap_config_menu = memnew(MenuButton);
	hb->add_child(snap_config_menu);
	snap_config_menu->set_h_size_flags(SIZE_SHRINK_END);
	snap_config_menu->set_tooltip(TTR("Snapping Options"));

	PopupMenu *p = snap_config_menu->get_popup();
	p->connect("id_pressed", this, "_popup_callback");
	p->set_hide_on_checkable_item_selection(false);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/snap_grid", TTR("Snap to grid")), SNAP_USE_GRID);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/use_rotation_snap", TTR("Use Rotation Snap")), SNAP_USE_ROTATION);
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/configure_snap", TTR("Configure Snap...")), SNAP_CONFIGURE);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/snap_relative", TTR("Snap Relative")), SNAP_RELATIVE);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/use_pixel_snap", TTR("Use Pixel Snap")), SNAP_USE_PIXEL);
	p->add_submenu_item(TTR("Smart snapping"), "SmartSnapping");

	smartsnap_config_popup = memnew(PopupMenu);
	p->add_child(smartsnap_config_popup);
	smartsnap_config_popup->set_name("SmartSnapping");
	smartsnap_config_popup->connect("id_pressed", this, "_popup_callback");
	smartsnap_config_popup->set_hide_on_checkable_item_selection(false);
	smartsnap_config_popup->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/snap_node_parent", TTR("Snap to parent")), SNAP_USE_NODE_PARENT);
	smartsnap_config_popup->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/snap_node_anchors", TTR("Snap to node anchor")), SNAP_USE_NODE_ANCHORS);
	smartsnap_config_popup->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/snap_node_sides", TTR("Snap to node sides")), SNAP_USE_NODE_SIDES);
	smartsnap_config_popup->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/snap_node_center", TTR("Snap to node center")), SNAP_USE_NODE_CENTER);
	smartsnap_config_popup->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/snap_other_nodes", TTR("Snap to other nodes")), SNAP_USE_OTHER_NODES);
	smartsnap_config_popup->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/snap_guides", TTR("Snap to guides")), SNAP_USE_GUIDES);

	hb->add_child(memnew(VSeparator));

	lock_button = memnew(ToolButton);
	hb->add_child(lock_button);

	lock_button->connect("pressed", this, "_popup_callback", varray(LOCK_SELECTED));
	lock_button->set_tooltip(TTR("Lock the selected object in place (can't be moved)."));

	unlock_button = memnew(ToolButton);
	hb->add_child(unlock_button);
	unlock_button->connect("pressed", this, "_popup_callback", varray(UNLOCK_SELECTED));
	unlock_button->set_tooltip(TTR("Unlock the selected object (can be moved)."));

	group_button = memnew(ToolButton);
	hb->add_child(group_button);
	group_button->connect("pressed", this, "_popup_callback", varray(GROUP_SELECTED));
	group_button->set_tooltip(TTR("Makes sure the object's children are not selectable."));

	ungroup_button = memnew(ToolButton);
	hb->add_child(ungroup_button);
	ungroup_button->connect("pressed", this, "_popup_callback", varray(UNGROUP_SELECTED));
	ungroup_button->set_tooltip(TTR("Restores the object's children's ability to be selected."));

	hb->add_child(memnew(VSeparator));

	skeleton_menu = memnew(MenuButton);
	hb->add_child(skeleton_menu);

	p = skeleton_menu->get_popup();
	p->set_hide_on_checkable_item_selection(false);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/skeleton_show_bones", TTR("Show Bones")), SKELETON_SHOW_BONES);
	p->add_separator();
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/skeleton_set_ik_chain", TTR("Make IK Chain")), SKELETON_SET_IK_CHAIN);
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/skeleton_clear_ik_chain", TTR("Clear IK Chain")), SKELETON_CLEAR_IK_CHAIN);
	p->add_separator();
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/skeleton_make_bones", TTR("Make Custom Bone(s) from Node(s)"), KEY_MASK_CMD | KEY_MASK_SHIFT | KEY_B), SKELETON_MAKE_BONES);
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/skeleton_clear_bones", TTR("Clear Custom Bones")), SKELETON_CLEAR_BONES);
	p->connect("id_pressed", this, "_popup_callback");

	hb->add_child(memnew(VSeparator));

	view_menu = memnew(MenuButton);
	view_menu->set_text(TTR("View"));
	hb->add_child(view_menu);
	view_menu->get_popup()->connect("id_pressed", this, "_popup_callback");

	p = view_menu->get_popup();
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/show_grid", TTR("Show Grid"), KEY_G), SHOW_GRID);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/show_helpers", TTR("Show Helpers"), KEY_H), SHOW_HELPERS);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/show_rulers", TTR("Show Rulers"), KEY_R), SHOW_RULERS);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/show_guides", TTR("Show Guides"), KEY_Y), SHOW_GUIDES);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/show_origin", TTR("Show Origin")), SHOW_ORIGIN);
	p->add_check_shortcut(ED_SHORTCUT("canvas_item_editor/show_viewport", TTR("Show Viewport")), SHOW_VIEWPORT);
	p->add_separator();
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/center_selection", TTR("Center Selection"), KEY_F), VIEW_CENTER_TO_SELECTION);
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/frame_selection", TTR("Frame Selection"), KEY_MASK_SHIFT | KEY_F), VIEW_FRAME_TO_SELECTION);

	presets_menu = memnew(MenuButton);
	presets_menu->set_text(TTR("Layout"));
	hb->add_child(presets_menu);
	presets_menu->hide();

	p = presets_menu->get_popup();
	p->connect("id_pressed", this, "_popup_callback");

	anchors_popup = memnew(PopupMenu);
	p->add_child(anchors_popup);
	anchors_popup->set_name("Anchors");
	anchors_popup->connect("id_pressed", this, "_popup_callback");

	animation_hb = memnew(HBoxContainer);
	hb->add_child(animation_hb);
	animation_hb->add_child(memnew(VSeparator));
	animation_hb->hide();

	key_loc_button = memnew(Button);
	key_loc_button->set_toggle_mode(true);
	key_loc_button->set_flat(true);
	key_loc_button->set_pressed(true);
	key_loc_button->set_focus_mode(FOCUS_NONE);
	key_loc_button->connect("pressed", this, "_popup_callback", varray(ANIM_INSERT_POS));
	animation_hb->add_child(key_loc_button);
	key_rot_button = memnew(Button);
	key_rot_button->set_toggle_mode(true);
	key_rot_button->set_flat(true);
	key_rot_button->set_pressed(true);
	key_rot_button->set_focus_mode(FOCUS_NONE);
	key_rot_button->connect("pressed", this, "_popup_callback", varray(ANIM_INSERT_ROT));
	animation_hb->add_child(key_rot_button);
	key_scale_button = memnew(Button);
	key_scale_button->set_toggle_mode(true);
	key_scale_button->set_flat(true);
	key_scale_button->set_focus_mode(FOCUS_NONE);
	key_scale_button->connect("pressed", this, "_popup_callback", varray(ANIM_INSERT_SCALE));
	animation_hb->add_child(key_scale_button);
	key_insert_button = memnew(Button);
	key_insert_button->set_flat(true);
	key_insert_button->set_focus_mode(FOCUS_NONE);
	key_insert_button->connect("pressed", this, "_popup_callback", varray(ANIM_INSERT_KEY));
	key_insert_button->set_tooltip(TTR("Insert Keys"));
	key_insert_button->set_shortcut(ED_SHORTCUT("canvas_item_editor/anim_insert_key", TTR("Insert Key"), KEY_INSERT));

	animation_hb->add_child(key_insert_button);

	animation_menu = memnew(MenuButton);
	animation_menu->set_text(TTR("Animation"));
	animation_hb->add_child(animation_menu);
	animation_menu->get_popup()->connect("id_pressed", this, "_popup_callback");

	p = animation_menu->get_popup();

	p->add_shortcut(ED_GET_SHORTCUT("canvas_item_editor/anim_insert_key"), ANIM_INSERT_KEY);
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/anim_insert_key_existing_tracks", TTR("Insert Key (Existing Tracks)"), KEY_MASK_CMD + KEY_INSERT), ANIM_INSERT_KEY_EXISTING);
	p->add_separator();
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/anim_copy_pose", TTR("Copy Pose")), ANIM_COPY_POSE);
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/anim_paste_pose", TTR("Paste Pose")), ANIM_PASTE_POSE);
	p->add_shortcut(ED_SHORTCUT("canvas_item_editor/anim_clear_pose", TTR("Clear Pose"), KEY_MASK_SHIFT | KEY_K), ANIM_CLEAR_POSE);

	snap_dialog = memnew(SnapDialog);
	snap_dialog->connect("confirmed", this, "_snap_changed");
	add_child(snap_dialog);

	select_sb = Ref<StyleBoxTexture>(memnew(StyleBoxTexture));

	selection_menu = memnew(PopupMenu);
	add_child(selection_menu);
	selection_menu->set_custom_minimum_size(Vector2(100, 0));
	selection_menu->connect("id_pressed", this, "_selection_result_pressed");
	selection_menu->connect("popup_hide", this, "_selection_menu_hide");

	multiply_grid_step_shortcut = ED_SHORTCUT("canvas_item_editor/multiply_grid_step", TTR("Multiply grid step by 2"), KEY_KP_MULTIPLY);
	divide_grid_step_shortcut = ED_SHORTCUT("canvas_item_editor/divide_grid_step", TTR("Divide grid step by 2"), KEY_KP_DIVIDE);

	key_pos = true;
	key_rot = true;
	key_scale = false;

	show_grid = false;
	show_origin = true;
	show_viewport = true;
	show_helpers = false;
	show_rulers = true;
	show_guides = true;
	zoom = 1;
	view_offset = Point2(-150 - RULER_WIDTH, -95 - RULER_WIDTH);
	previous_update_view_offset = view_offset; // Moves the view a little bit to the left so that (0,0) is visible. The values a relative to a 16/10 screen
	grid_offset = Point2();
	grid_step = Point2(10, 10);
	grid_step_multiplier = 0;
	snap_rotation_offset = 0;
	snap_rotation_step = 15 / (180 / Math_PI);
	snap_active = false;
	snap_node_parent = true;
	snap_node_anchors = true;
	snap_node_sides = true;
	snap_node_center = true;
	snap_other_nodes = true;
	snap_grid = true;
	snap_guides = true;
	snap_rotation = false;
	snap_pixel = false;
	skeleton_show_bones = true;
	skeleton_menu->get_popup()->set_item_checked(skeleton_menu->get_popup()->get_item_index(SKELETON_SHOW_BONES), true);
	singleton = this;

	set_process_unhandled_key_input(true);

	drag_type = DRAG_NONE;
	drag_from = Vector2();
	drag_to = Vector2();
	dragged_guide_pos = Point2();
	dragged_guide_index = -1;

	bone_last_frame = 0;

	// Update the menus' checkboxes
	call_deferred("set_state", get_state());
}

CanvasItemEditor *CanvasItemEditor::singleton = NULL;

void CanvasItemEditorPlugin::edit(Object *p_object) {

	canvas_item_editor->set_undo_redo(&get_undo_redo());
	canvas_item_editor->edit(Object::cast_to<CanvasItem>(p_object));
}

bool CanvasItemEditorPlugin::handles(Object *p_object) const {

	return p_object->is_class("CanvasItem");
}

void CanvasItemEditorPlugin::make_visible(bool p_visible) {

	if (p_visible) {
		canvas_item_editor->show();
		canvas_item_editor->set_physics_process(true);
		VisualServer::get_singleton()->viewport_set_hide_canvas(editor->get_scene_root()->get_viewport_rid(), false);
		canvas_item_editor->viewport->grab_focus();

	} else {

		canvas_item_editor->hide();
		canvas_item_editor->set_physics_process(false);
		VisualServer::get_singleton()->viewport_set_hide_canvas(editor->get_scene_root()->get_viewport_rid(), true);
	}
}

Dictionary CanvasItemEditorPlugin::get_state() const {

	return canvas_item_editor->get_state();
}
void CanvasItemEditorPlugin::set_state(const Dictionary &p_state) {

	canvas_item_editor->set_state(p_state);
}

CanvasItemEditorPlugin::CanvasItemEditorPlugin(EditorNode *p_node) {

	editor = p_node;
	canvas_item_editor = memnew(CanvasItemEditor(editor));
	canvas_item_editor->set_v_size_flags(Control::SIZE_EXPAND_FILL);
	editor->get_viewport()->add_child(canvas_item_editor);
	canvas_item_editor->set_anchors_and_margins_preset(Control::PRESET_WIDE);
	canvas_item_editor->hide();
}

CanvasItemEditorPlugin::~CanvasItemEditorPlugin() {
}

void CanvasItemEditorViewport::_on_mouse_exit() {
	if (!selector->is_visible()) {
		_remove_preview();
	}
}

void CanvasItemEditorViewport::_on_select_type(Object *selected) {
	CheckBox *check = Object::cast_to<CheckBox>(selected);
	String type = check->get_text();
	selector->set_title(vformat(TTR("Add %s"), type));
	label->set_text(vformat(TTR("Adding %s..."), type));
}

void CanvasItemEditorViewport::_on_change_type_confirmed() {
	if (!button_group->get_pressed_button())
		return;

	CheckBox *check = Object::cast_to<CheckBox>(button_group->get_pressed_button());
	default_type = check->get_text();
	_perform_drop_data();
	selector->hide();
}

void CanvasItemEditorViewport::_on_change_type_closed() {

	_remove_preview();
}

void CanvasItemEditorViewport::_create_preview(const Vector<String> &files) const {
	label->set_position(get_global_position() + Point2(14, 14) * EDSCALE);
	label_desc->set_position(label->get_position() + Point2(0, label->get_size().height));
	bool add_preview = false;
	for (int i = 0; i < files.size(); i++) {
		String path = files[i];
		RES res = ResourceLoader::load(path);
		Ref<Texture> texture = Ref<Texture>(Object::cast_to<Texture>(*res));
		Ref<PackedScene> scene = Ref<PackedScene>(Object::cast_to<PackedScene>(*res));
		if (texture != NULL || scene != NULL) {
			if (texture != NULL) {
				Sprite *sprite = memnew(Sprite);
				sprite->set_texture(texture);
				sprite->set_modulate(Color(1, 1, 1, 0.7f));
				preview_node->add_child(sprite);
				label->show();
				label_desc->show();
			} else {
				if (scene.is_valid()) {
					Node *instance = scene->instance();
					if (instance) {
						preview_node->add_child(instance);
					}
				}
			}
			add_preview = true;
		}
	}

	if (add_preview)
		editor->get_scene_root()->add_child(preview_node);
}

void CanvasItemEditorViewport::_remove_preview() {
	if (preview_node->get_parent()) {
		for (int i = preview_node->get_child_count() - 1; i >= 0; i--) {
			Node *node = preview_node->get_child(i);
			node->queue_delete();
			preview_node->remove_child(node);
		}
		editor->get_scene_root()->remove_child(preview_node);

		label->hide();
		label_desc->hide();
	}
}

bool CanvasItemEditorViewport::_cyclical_dependency_exists(const String &p_target_scene_path, Node *p_desired_node) {
	if (p_desired_node->get_filename() == p_target_scene_path) {
		return true;
	}

	int childCount = p_desired_node->get_child_count();
	for (int i = 0; i < childCount; i++) {
		Node *child = p_desired_node->get_child(i);
		if (_cyclical_dependency_exists(p_target_scene_path, child)) {
			return true;
		}
	}
	return false;
}

void CanvasItemEditorViewport::_create_nodes(Node *parent, Node *child, String &path, const Point2 &p_point) {
	child->set_name(path.get_file().get_basename());
	Ref<Texture> texture = Ref<Texture>(Object::cast_to<Texture>(ResourceCache::get(path)));
	Size2 texture_size = texture->get_size();

	if (parent) {
		editor_data->get_undo_redo().add_do_method(parent, "add_child", child);
		editor_data->get_undo_redo().add_do_method(child, "set_owner", editor->get_edited_scene());
		editor_data->get_undo_redo().add_do_reference(child);
		editor_data->get_undo_redo().add_undo_method(parent, "remove_child", child);
	} else { // if we haven't parent, lets try to make a child as a parent.
		editor_data->get_undo_redo().add_do_method(editor, "set_edited_scene", child);
		editor_data->get_undo_redo().add_do_method(child, "set_owner", editor->get_edited_scene());
		editor_data->get_undo_redo().add_do_reference(child);
		editor_data->get_undo_redo().add_undo_method(editor, "set_edited_scene", (Object *)NULL);
	}

	if (parent) {
		String new_name = parent->validate_child_name(child);
		ScriptEditorDebugger *sed = ScriptEditor::get_singleton()->get_debugger();
		editor_data->get_undo_redo().add_do_method(sed, "live_debug_create_node", editor->get_edited_scene()->get_path_to(parent), child->get_class(), new_name);
		editor_data->get_undo_redo().add_undo_method(sed, "live_debug_remove_node", NodePath(String(editor->get_edited_scene()->get_path_to(parent)) + "/" + new_name));
	}

	// handle with different property for texture
	String property = "texture";
	List<PropertyInfo> props;
	child->get_property_list(&props);
	for (const List<PropertyInfo>::Element *E = props.front(); E; E = E->next()) {
		if (E->get().name == "config/texture") { // Particles2D
			property = "config/texture";
			break;
		} else if (E->get().name == "texture/texture") { // Polygon2D
			property = "texture/texture";
			break;
		} else if (E->get().name == "normal") { // TouchScreenButton
			property = "normal";
			break;
		}
	}
	editor_data->get_undo_redo().add_do_property(child, property, texture);

	// make visible for certain node type
	if (default_type == "NinePatchRect") {
		editor_data->get_undo_redo().add_do_property(child, "rect/size", texture_size);
	} else if (default_type == "Polygon2D") {
		PoolVector<Vector2> list;
		list.push_back(Vector2(0, 0));
		list.push_back(Vector2(texture_size.width, 0));
		list.push_back(Vector2(texture_size.width, texture_size.height));
		list.push_back(Vector2(0, texture_size.height));
		editor_data->get_undo_redo().add_do_property(child, "polygon", list);
	}

	// locate at preview position
	Point2 pos = Point2(0, 0);
	if (parent && parent->has_method("get_global_position")) {
		pos = parent->call("get_global_position");
	}
	Transform2D trans = canvas->get_canvas_transform();
	Point2 target_position = (p_point - trans.get_origin()) / trans.get_scale().x - pos;
	if (default_type == "Polygon2D" || default_type == "TouchScreenButton" || default_type == "TextureRect" || default_type == "NinePatchRect") {
		target_position -= texture_size / 2;
	}
	// there's nothing to be used as source position so snapping will work as absolute if enabled
	target_position = canvas->snap_point(target_position);
	editor_data->get_undo_redo().add_do_method(child, "set_position", target_position);
}

bool CanvasItemEditorViewport::_create_instance(Node *parent, String &path, const Point2 &p_point) {
	Ref<PackedScene> sdata = ResourceLoader::load(path);
	if (!sdata.is_valid()) { // invalid scene
		return false;
	}

	Node *instanced_scene = sdata->instance(PackedScene::GEN_EDIT_STATE_INSTANCE);
	if (!instanced_scene) { // error on instancing
		return false;
	}

	if (editor->get_edited_scene()->get_filename() != "") { // cyclical instancing
		if (_cyclical_dependency_exists(editor->get_edited_scene()->get_filename(), instanced_scene)) {
			memdelete(instanced_scene);
			return false;
		}
	}

	instanced_scene->set_filename(ProjectSettings::get_singleton()->localize_path(path));

	editor_data->get_undo_redo().add_do_method(parent, "add_child", instanced_scene);
	editor_data->get_undo_redo().add_do_method(instanced_scene, "set_owner", editor->get_edited_scene());
	editor_data->get_undo_redo().add_do_reference(instanced_scene);
	editor_data->get_undo_redo().add_undo_method(parent, "remove_child", instanced_scene);

	String new_name = parent->validate_child_name(instanced_scene);
	ScriptEditorDebugger *sed = ScriptEditor::get_singleton()->get_debugger();
	editor_data->get_undo_redo().add_do_method(sed, "live_debug_instance_node", editor->get_edited_scene()->get_path_to(parent), path, new_name);
	editor_data->get_undo_redo().add_undo_method(sed, "live_debug_remove_node", NodePath(String(editor->get_edited_scene()->get_path_to(parent)) + "/" + new_name));

	CanvasItem *parent_ci = Object::cast_to<CanvasItem>(parent);
	if (parent_ci) {
		Vector2 target_pos = canvas->get_canvas_transform().affine_inverse().xform(p_point);
		target_pos = canvas->snap_point(target_pos);
		target_pos = parent_ci->get_global_transform_with_canvas().affine_inverse().xform(target_pos);
		editor_data->get_undo_redo().add_do_method(instanced_scene, "set_position", target_pos);
	}

	return true;
}

void CanvasItemEditorViewport::_perform_drop_data() {
	_remove_preview();

	// Without root dropping multiple files is not allowed
	if (!target_node && selected_files.size() > 1) {
		accept->get_ok()->set_text(TTR("Ok"));
		accept->set_text(TTR("Cannot instantiate multiple nodes without root."));
		accept->popup_centered_minsize();
		return;
	}

	Vector<String> error_files;

	editor_data->get_undo_redo().create_action(TTR("Create Node"));

	for (int i = 0; i < selected_files.size(); i++) {
		String path = selected_files[i];
		RES res = ResourceLoader::load(path);
		if (res.is_null()) {
			continue;
		}
		Ref<PackedScene> scene = Ref<PackedScene>(Object::cast_to<PackedScene>(*res));
		if (scene != NULL && scene.is_valid()) {
			if (!target_node) {
				// Without root node act the same as "Load Inherited Scene"
				Error err = EditorNode::get_singleton()->load_scene(path, false, true);
				if (err != OK) {
					error_files.push_back(path);
				}
			} else {
				bool success = _create_instance(target_node, path, drop_pos);
				if (!success) {
					error_files.push_back(path);
				}
			}
		} else {
			Ref<Texture> texture = Ref<Texture>(Object::cast_to<Texture>(*res));
			if (texture != NULL && texture.is_valid()) {
				Node *child;
				if (default_type == "Light2D")
					child = memnew(Light2D);
				else if (default_type == "Particles2D")
					child = memnew(Particles2D);
				else if (default_type == "Polygon2D")
					child = memnew(Polygon2D);
				else if (default_type == "TouchScreenButton")
					child = memnew(TouchScreenButton);
				else if (default_type == "TextureRect")
					child = memnew(TextureRect);
				else if (default_type == "NinePatchRect")
					child = memnew(NinePatchRect);
				else
					child = memnew(Sprite); // default

				_create_nodes(target_node, child, path, drop_pos);
			}
		}
	}

	editor_data->get_undo_redo().commit_action();

	if (error_files.size() > 0) {
		String files_str;
		for (int i = 0; i < error_files.size(); i++) {
			files_str += error_files[i].get_file().get_basename() + ",";
		}
		files_str = files_str.substr(0, files_str.length() - 1);
		accept->get_ok()->set_text(TTR("Ugh"));
		accept->set_text(vformat(TTR("Error instancing scene from %s"), files_str.c_str()));
		accept->popup_centered_minsize();
	}
}

bool CanvasItemEditorViewport::can_drop_data(const Point2 &p_point, const Variant &p_data) const {
	Dictionary d = p_data;
	if (d.has("type")) {
		if (String(d["type"]) == "files") {
			Vector<String> files = d["files"];
			bool can_instance = false;
			for (int i = 0; i < files.size(); i++) { // check if dragged files contain resource or scene can be created at least once
				RES res = ResourceLoader::load(files[i]);
				if (res.is_null()) {
					continue;
				}
				String type = res->get_class();
				if (type == "PackedScene") {
					Ref<PackedScene> sdata = Ref<PackedScene>(Object::cast_to<PackedScene>(*res));
					Node *instanced_scene = sdata->instance(PackedScene::GEN_EDIT_STATE_INSTANCE);
					if (!instanced_scene) {
						continue;
					}
					memdelete(instanced_scene);
				} else if (type == "Texture" ||
						   type == "ImageTexture" ||
						   type == "ViewportTexture" ||
						   type == "CurveTexture" ||
						   type == "GradientTexture" ||
						   type == "StreamTexture" ||
						   type == "AtlasTexture" ||
						   type == "LargeTexture") {
					Ref<Texture> texture = Ref<Texture>(Object::cast_to<Texture>(*res));
					if (texture.is_valid() == false) {
						continue;
					}
				} else {
					continue;
				}
				can_instance = true;
				break;
			}
			if (can_instance) {
				if (!preview_node->get_parent()) { // create preview only once
					_create_preview(files);
				}
				Transform2D trans = canvas->get_canvas_transform();
				preview_node->set_position((p_point - trans.get_origin()) / trans.get_scale().x);
				label->set_text(vformat(TTR("Adding %s..."), default_type));
			}
			return can_instance;
		}
	}
	label->hide();
	return false;
}

void CanvasItemEditorViewport::_show_resource_type_selector() {
	_remove_preview();
	List<BaseButton *> btn_list;
	button_group->get_buttons(&btn_list);

	for (int i = 0; i < btn_list.size(); i++) {
		CheckBox *check = Object::cast_to<CheckBox>(btn_list[i]);
		check->set_pressed(check->get_text() == default_type);
	}
	selector->set_title(vformat(TTR("Add %s"), default_type));
	selector->popup_centered_minsize();
}

bool CanvasItemEditorViewport::_only_packed_scenes_selected() const {

	for (int i = 0; i < selected_files.size(); ++i) {
		if (ResourceLoader::load(selected_files[i])->get_class() != "PackedScene") {
			return false;
		}
	}

	return true;
}

void CanvasItemEditorViewport::drop_data(const Point2 &p_point, const Variant &p_data) {
	bool is_shift = Input::get_singleton()->is_key_pressed(KEY_SHIFT);
	bool is_alt = Input::get_singleton()->is_key_pressed(KEY_ALT);

	selected_files.clear();
	Dictionary d = p_data;
	if (d.has("type") && String(d["type"]) == "files") {
		selected_files = d["files"];
	}
	if (selected_files.size() == 0)
		return;

	List<Node *> list = editor->get_editor_selection()->get_selected_node_list();
	if (list.size() == 0) {
		Node *root_node = editor->get_edited_scene();
		if (root_node) {
			list.push_back(root_node);
		} else {
			drop_pos = p_point;
			target_node = NULL;
		}
	}

	if (list.size() > 0) {
		target_node = list[0];
		if (is_shift && target_node != editor->get_edited_scene()) {
			target_node = target_node->get_parent();
		}
	}

	drop_pos = p_point;

	if (is_alt && !_only_packed_scenes_selected()) {
		_show_resource_type_selector();
	} else {
		_perform_drop_data();
	}
}

void CanvasItemEditorViewport::_notification(int p_what) {
	switch (p_what) {
		case NOTIFICATION_ENTER_TREE: {
			connect("mouse_exited", this, "_on_mouse_exit");
			label->add_color_override("font_color", get_color("warning_color", "Editor"));
		} break;
		case NOTIFICATION_EXIT_TREE: {
			disconnect("mouse_exited", this, "_on_mouse_exit");
		} break;

		default: break;
	}
}

void CanvasItemEditorViewport::_bind_methods() {
	ClassDB::bind_method(D_METHOD("_on_select_type"), &CanvasItemEditorViewport::_on_select_type);
	ClassDB::bind_method(D_METHOD("_on_change_type_confirmed"), &CanvasItemEditorViewport::_on_change_type_confirmed);
	ClassDB::bind_method(D_METHOD("_on_change_type_closed"), &CanvasItemEditorViewport::_on_change_type_closed);
	ClassDB::bind_method(D_METHOD("_on_mouse_exit"), &CanvasItemEditorViewport::_on_mouse_exit);
}

CanvasItemEditorViewport::CanvasItemEditorViewport(EditorNode *p_node, CanvasItemEditor *p_canvas) {
	default_type = "Sprite";
	// Node2D
	types.push_back("Sprite");
	types.push_back("Light2D");
	types.push_back("Particles2D");
	types.push_back("Polygon2D");
	types.push_back("TouchScreenButton");
	// Control
	types.push_back("TextureRect");
	types.push_back("NinePatchRect");

	target_node = NULL;
	editor = p_node;
	editor_data = editor->get_scene_tree_dock()->get_editor_data();
	canvas = p_canvas;
	preview_node = memnew(Node2D);

	accept = memnew(AcceptDialog);
	editor->get_gui_base()->add_child(accept);

	selector = memnew(AcceptDialog);
	editor->get_gui_base()->add_child(selector);
	selector->set_title(TTR("Change default type"));
	selector->connect("confirmed", this, "_on_change_type_confirmed");
	selector->connect("popup_hide", this, "_on_change_type_closed");

	VBoxContainer *vbc = memnew(VBoxContainer);
	selector->add_child(vbc);
	vbc->set_h_size_flags(SIZE_EXPAND_FILL);
	vbc->set_v_size_flags(SIZE_EXPAND_FILL);
	vbc->set_custom_minimum_size(Size2(200, 260) * EDSCALE);

	btn_group = memnew(VBoxContainer);
	vbc->add_child(btn_group);
	btn_group->set_h_size_flags(0);

	button_group.instance();
	for (int i = 0; i < types.size(); i++) {
		CheckBox *check = memnew(CheckBox);
		btn_group->add_child(check);
		check->set_text(types[i]);
		check->connect("button_down", this, "_on_select_type", varray(check));
		check->set_button_group(button_group);
	}

	label = memnew(Label);
	label->add_color_override("font_color_shadow", Color(0, 0, 0, 1));
	label->add_constant_override("shadow_as_outline", 1 * EDSCALE);
	label->hide();
	editor->get_gui_base()->add_child(label);

	label_desc = memnew(Label);
	label_desc->set_text(TTR("Drag & drop + Shift : Add node as sibling\nDrag & drop + Alt : Change node type"));
	label_desc->add_color_override("font_color", Color(0.6f, 0.6f, 0.6f, 1));
	label_desc->add_color_override("font_color_shadow", Color(0.2f, 0.2f, 0.2f, 1));
	label_desc->add_constant_override("shadow_as_outline", 1 * EDSCALE);
	label_desc->add_constant_override("line_spacing", 0);
	label_desc->hide();
	editor->get_gui_base()->add_child(label_desc);
}

CanvasItemEditorViewport::~CanvasItemEditorViewport() {
	memdelete(preview_node);
}