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virtualx-engine/scene/gui/graph_edit.cpp
Rémi Verschelde 1426cd3b3a
One Copyright Update to rule them all 
As many open source projects have started doing it, we're removing the
current year from the copyright notice, so that we don't need to bump
it every year.

It seems like only the first year of publication is technically
relevant for copyright notices, and even that seems to be something
that many companies stopped listing altogether (in a version controlled
codebase, the commits are a much better source of date of publication
than a hardcoded copyright statement).

We also now list Godot Engine contributors first as we're collectively
the current maintainers of the project, and we clarify that the
"exclusive" copyright of the co-founders covers the timespan before
opensourcing (their further contributions are included as part of Godot
Engine contributors).

Also fixed "cf." Frenchism - it's meant as "refer to / see".

Backported from #70885.
2023-01-10 15:26:54 +01:00

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/**************************************************************************/
/* graph_edit.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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: */
/* */
/* 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 "graph_edit.h"
#include "core/math/math_funcs.h"
#include "core/os/input.h"
#include "core/os/keyboard.h"
#include "scene/gui/box_container.h"
#ifdef TOOLS_ENABLED
#include "editor/editor_scale.h"
#endif
constexpr int MINIMAP_OFFSET = 12;
constexpr int MINIMAP_PADDING = 5;
bool GraphEditFilter::has_point(const Point2 &p_point) const {
return ge->_filter_input(p_point);
}
GraphEditFilter::GraphEditFilter(GraphEdit *p_edit) {
ge = p_edit;
}
void GraphEditMinimap::_bind_methods() {
ClassDB::bind_method(D_METHOD("_gui_input"), &GraphEditMinimap::_gui_input);
}
GraphEditMinimap::GraphEditMinimap(GraphEdit *p_edit) {
ge = p_edit;
graph_proportions = Vector2(1, 1);
graph_padding = Vector2(0, 0);
camera_position = Vector2(100, 50);
camera_size = Vector2(200, 200);
minimap_padding = Vector2(MINIMAP_PADDING, MINIMAP_PADDING);
minimap_offset = minimap_padding + _convert_from_graph_position(graph_padding);
is_pressing = false;
is_resizing = false;
}
void GraphEditMinimap::update_minimap() {
Vector2 graph_offset = _get_graph_offset();
Vector2 graph_size = _get_graph_size();
camera_position = ge->get_scroll_ofs() - graph_offset;
camera_size = ge->get_size();
Vector2 render_size = _get_render_size();
float target_ratio = render_size.x / render_size.y;
float graph_ratio = graph_size.x / graph_size.y;
graph_proportions = graph_size;
graph_padding = Vector2(0, 0);
if (graph_ratio > target_ratio) {
graph_proportions.x = graph_size.x;
graph_proportions.y = graph_size.x / target_ratio;
graph_padding.y = Math::abs(graph_size.y - graph_proportions.y) / 2;
} else {
graph_proportions.x = graph_size.y * target_ratio;
graph_proportions.y = graph_size.y;
graph_padding.x = Math::abs(graph_size.x - graph_proportions.x) / 2;
}
// This centers minimap inside the minimap rectangle.
minimap_offset = minimap_padding + _convert_from_graph_position(graph_padding);
}
Rect2 GraphEditMinimap::get_camera_rect() {
Vector2 camera_center = _convert_from_graph_position(camera_position + camera_size / 2) + minimap_offset;
Vector2 camera_viewport = _convert_from_graph_position(camera_size);
Vector2 camera_position = (camera_center - camera_viewport / 2);
return Rect2(camera_position, camera_viewport);
}
Vector2 GraphEditMinimap::_get_render_size() {
if (!is_inside_tree()) {
return Vector2(0, 0);
}
return get_size() - 2 * minimap_padding;
}
Vector2 GraphEditMinimap::_get_graph_offset() {
return Vector2(ge->h_scroll->get_min(), ge->v_scroll->get_min());
}
Vector2 GraphEditMinimap::_get_graph_size() {
Vector2 graph_size = Vector2(ge->h_scroll->get_max(), ge->v_scroll->get_max()) - Vector2(ge->h_scroll->get_min(), ge->v_scroll->get_min());
if (graph_size.x == 0) {
graph_size.x = 1;
}
if (graph_size.y == 0) {
graph_size.y = 1;
}
return graph_size;
}
Vector2 GraphEditMinimap::_convert_from_graph_position(const Vector2 &p_position) {
Vector2 map_position = Vector2(0, 0);
Vector2 render_size = _get_render_size();
map_position.x = p_position.x * render_size.x / graph_proportions.x;
map_position.y = p_position.y * render_size.y / graph_proportions.y;
return map_position;
}
Vector2 GraphEditMinimap::_convert_to_graph_position(const Vector2 &p_position) {
Vector2 graph_position = Vector2(0, 0);
Vector2 render_size = _get_render_size();
graph_position.x = p_position.x * graph_proportions.x / render_size.x;
graph_position.y = p_position.y * graph_proportions.y / render_size.y;
return graph_position;
}
void GraphEditMinimap::_gui_input(const Ref<InputEvent> &p_ev) {
if (!ge->is_minimap_enabled()) {
return;
}
Ref<InputEventMouseButton> mb = p_ev;
Ref<InputEventMouseMotion> mm = p_ev;
if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT) {
if (mb->is_pressed()) {
is_pressing = true;
Ref<Texture> resizer = get_icon("resizer");
Rect2 resizer_hitbox = Rect2(Point2(), resizer->get_size());
if (resizer_hitbox.has_point(mb->get_position())) {
is_resizing = true;
} else {
Vector2 click_position = _convert_to_graph_position(mb->get_position() - minimap_padding) - graph_padding;
_adjust_graph_scroll(click_position);
}
} else {
is_pressing = false;
is_resizing = false;
}
accept_event();
} else if (mm.is_valid() && is_pressing) {
if (is_resizing) {
// Prevent setting minimap wider than GraphEdit
Vector2 new_minimap_size;
new_minimap_size.x = MIN(get_size().x - mm->get_relative().x, ge->get_size().x - 2.0 * minimap_padding.x);
new_minimap_size.y = MIN(get_size().y - mm->get_relative().y, ge->get_size().y - 2.0 * minimap_padding.y);
ge->set_minimap_size(new_minimap_size);
update();
} else {
Vector2 click_position = _convert_to_graph_position(mm->get_position() - minimap_padding) - graph_padding;
_adjust_graph_scroll(click_position);
}
accept_event();
}
}
void GraphEditMinimap::_adjust_graph_scroll(const Vector2 &p_offset) {
Vector2 graph_offset = _get_graph_offset();
ge->set_scroll_ofs(p_offset + graph_offset - camera_size / 2);
}
Error GraphEdit::connect_node(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port) {
if (is_node_connected(p_from, p_from_port, p_to, p_to_port)) {
return OK;
}
Connection c;
c.from = p_from;
c.from_port = p_from_port;
c.to = p_to;
c.to_port = p_to_port;
c.activity = 0;
connections.push_back(c);
top_layer->update();
minimap->update();
update();
connections_layer->update();
return OK;
}
bool GraphEdit::is_node_connected(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port) {
for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {
if (E->get().from == p_from && E->get().from_port == p_from_port && E->get().to == p_to && E->get().to_port == p_to_port) {
return true;
}
}
return false;
}
void GraphEdit::disconnect_node(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port) {
for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {
if (E->get().from == p_from && E->get().from_port == p_from_port && E->get().to == p_to && E->get().to_port == p_to_port) {
connections.erase(E);
top_layer->update();
minimap->update();
update();
connections_layer->update();
return;
}
}
}
bool GraphEdit::clips_input() const {
return true;
}
void GraphEdit::get_connection_list(List<Connection> *r_connections) const {
*r_connections = connections;
}
void GraphEdit::set_scroll_ofs(const Vector2 &p_ofs) {
setting_scroll_ofs = true;
h_scroll->set_value(p_ofs.x);
v_scroll->set_value(p_ofs.y);
_update_scroll();
setting_scroll_ofs = false;
}
Vector2 GraphEdit::get_scroll_ofs() const {
return Vector2(h_scroll->get_value(), v_scroll->get_value());
}
void GraphEdit::_scroll_moved(double) {
if (!awaiting_scroll_offset_update) {
call_deferred("_update_scroll_offset");
awaiting_scroll_offset_update = true;
}
top_layer->update();
minimap->update();
update();
if (!setting_scroll_ofs) { //in godot, signals on change value are avoided as a convention
emit_signal("scroll_offset_changed", get_scroll_ofs());
}
}
void GraphEdit::_update_scroll_offset() {
set_block_minimum_size_adjust(true);
for (int i = 0; i < get_child_count(); i++) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn) {
continue;
}
Point2 pos = gn->get_offset() * zoom;
pos -= Point2(h_scroll->get_value(), v_scroll->get_value());
gn->set_position(pos);
if (gn->get_scale() != Vector2(zoom, zoom)) {
gn->set_scale(Vector2(zoom, zoom));
}
}
connections_layer->set_position(-Point2(h_scroll->get_value(), v_scroll->get_value()));
set_block_minimum_size_adjust(false);
awaiting_scroll_offset_update = false;
}
void GraphEdit::_update_scroll() {
if (updating) {
return;
}
updating = true;
set_block_minimum_size_adjust(true);
Rect2 screen;
for (int i = 0; i < get_child_count(); i++) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn) {
continue;
}
Rect2 r;
r.position = gn->get_offset() * zoom;
r.size = gn->get_size() * zoom;
screen = screen.merge(r);
}
screen.position -= get_size();
screen.size += get_size() * 2.0;
h_scroll->set_min(screen.position.x);
h_scroll->set_max(screen.position.x + screen.size.x);
h_scroll->set_page(get_size().x);
if (h_scroll->get_max() - h_scroll->get_min() <= h_scroll->get_page()) {
h_scroll->hide();
} else {
h_scroll->show();
}
v_scroll->set_min(screen.position.y);
v_scroll->set_max(screen.position.y + screen.size.y);
v_scroll->set_page(get_size().y);
if (v_scroll->get_max() - v_scroll->get_min() <= v_scroll->get_page()) {
v_scroll->hide();
} else {
v_scroll->show();
}
Size2 hmin = h_scroll->get_combined_minimum_size();
Size2 vmin = v_scroll->get_combined_minimum_size();
// Avoid scrollbar overlapping.
h_scroll->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, v_scroll->is_visible() ? -vmin.width : 0);
v_scroll->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, h_scroll->is_visible() ? -hmin.height : 0);
set_block_minimum_size_adjust(false);
if (!awaiting_scroll_offset_update) {
call_deferred("_update_scroll_offset");
awaiting_scroll_offset_update = true;
}
updating = false;
}
void GraphEdit::_graph_node_raised(Node *p_gn) {
GraphNode *gn = Object::cast_to<GraphNode>(p_gn);
ERR_FAIL_COND(!gn);
if (gn->is_comment()) {
move_child(gn, 0);
} else {
gn->raise();
}
int first_not_comment = 0;
for (int i = 0; i < get_child_count(); i++) {
GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i));
if (gn2 && !gn2->is_comment()) {
first_not_comment = i;
break;
}
}
move_child(connections_layer, first_not_comment);
top_layer->raise();
}
void GraphEdit::_graph_node_selected(Node *p_gn) {
GraphNode *gn = Object::cast_to<GraphNode>(p_gn);
ERR_FAIL_COND(!gn);
emit_signal("node_selected", gn);
}
void GraphEdit::_graph_node_unselected(Node *p_gn) {
GraphNode *gn = Object::cast_to<GraphNode>(p_gn);
ERR_FAIL_COND(!gn);
emit_signal("node_unselected", gn);
}
void GraphEdit::_graph_node_moved(Node *p_gn) {
GraphNode *gn = Object::cast_to<GraphNode>(p_gn);
ERR_FAIL_COND(!gn);
top_layer->update();
minimap->update();
update();
connections_layer->update();
}
void GraphEdit::_graph_node_slot_updated(int p_index, Node *p_gn) {
GraphNode *gn = Object::cast_to<GraphNode>(p_gn);
ERR_FAIL_COND(!gn);
top_layer->update();
minimap->update();
update();
connections_layer->update();
}
void GraphEdit::add_child_notify(Node *p_child) {
Control::add_child_notify(p_child);
top_layer->call_deferred("raise"); // Top layer always on top!
GraphNode *gn = Object::cast_to<GraphNode>(p_child);
if (gn) {
gn->set_scale(Vector2(zoom, zoom));
gn->connect("offset_changed", this, "_graph_node_moved", varray(gn));
gn->connect("selected", this, "_graph_node_selected", varray(gn));
gn->connect("unselected", this, "_graph_node_unselected", varray(gn));
gn->connect("slot_updated", this, "_graph_node_slot_updated", varray(gn));
gn->connect("raise_request", this, "_graph_node_raised", varray(gn));
gn->connect("item_rect_changed", connections_layer, "update");
gn->connect("item_rect_changed", minimap, "update");
_graph_node_moved(gn);
gn->set_mouse_filter(MOUSE_FILTER_PASS);
}
}
void GraphEdit::remove_child_notify(Node *p_child) {
Control::remove_child_notify(p_child);
if (p_child == top_layer) {
top_layer = nullptr;
minimap = nullptr;
} else if (p_child == connections_layer) {
connections_layer = nullptr;
}
if (top_layer != nullptr && is_inside_tree()) {
top_layer->call_deferred("raise"); // Top layer always on top!
}
GraphNode *gn = Object::cast_to<GraphNode>(p_child);
if (gn) {
gn->disconnect("offset_changed", this, "_graph_node_moved");
gn->disconnect("selected", this, "_graph_node_selected");
gn->disconnect("unselected", this, "_graph_node_unselected");
gn->disconnect("slot_updated", this, "_graph_node_slot_updated");
gn->disconnect("raise_request", this, "_graph_node_raised");
// In case of the whole GraphEdit being destroyed these references can already be freed.
if (connections_layer != nullptr && connections_layer->is_inside_tree()) {
gn->disconnect("item_rect_changed", connections_layer, "update");
}
if (minimap != nullptr && minimap->is_inside_tree()) {
gn->disconnect("item_rect_changed", minimap, "update");
}
}
}
void GraphEdit::_notification(int p_what) {
if (p_what == NOTIFICATION_ENTER_TREE || p_what == NOTIFICATION_THEME_CHANGED) {
port_grab_distance_horizontal = get_constant("port_grab_distance_horizontal");
port_grab_distance_vertical = get_constant("port_grab_distance_vertical");
zoom_minus->set_icon(get_icon("minus"));
zoom_reset->set_icon(get_icon("reset"));
zoom_plus->set_icon(get_icon("more"));
snap_button->set_icon(get_icon("snap"));
minimap_button->set_icon(get_icon("minimap"));
}
if (p_what == NOTIFICATION_READY) {
Size2 hmin = h_scroll->get_combined_minimum_size();
Size2 vmin = v_scroll->get_combined_minimum_size();
h_scroll->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_BEGIN, 0);
h_scroll->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 0);
h_scroll->set_anchor_and_margin(MARGIN_TOP, ANCHOR_END, -hmin.height);
h_scroll->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, 0);
v_scroll->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_END, -vmin.width);
v_scroll->set_anchor_and_margin(MARGIN_RIGHT, ANCHOR_END, 0);
v_scroll->set_anchor_and_margin(MARGIN_TOP, ANCHOR_BEGIN, 0);
v_scroll->set_anchor_and_margin(MARGIN_BOTTOM, ANCHOR_END, 0);
}
if (p_what == NOTIFICATION_DRAW) {
draw_style_box(get_stylebox("bg"), Rect2(Point2(), get_size()));
if (is_using_snap()) {
//draw grid
int snap = get_snap();
Vector2 offset = get_scroll_ofs() / zoom;
Size2 size = get_size() / zoom;
Point2i from = (offset / float(snap)).floor();
Point2i len = (size / float(snap)).floor() + Vector2(1, 1);
Color grid_minor = get_color("grid_minor");
Color grid_major = get_color("grid_major");
for (int i = from.x; i < from.x + len.x; i++) {
Color color;
if (ABS(i) % 10 == 0) {
color = grid_major;
} else {
color = grid_minor;
}
float base_ofs = i * snap * zoom - offset.x * zoom;
draw_line(Vector2(base_ofs, 0), Vector2(base_ofs, get_size().height), color);
}
for (int i = from.y; i < from.y + len.y; i++) {
Color color;
if (ABS(i) % 10 == 0) {
color = grid_major;
} else {
color = grid_minor;
}
float base_ofs = i * snap * zoom - offset.y * zoom;
draw_line(Vector2(0, base_ofs), Vector2(get_size().width, base_ofs), color);
}
}
}
if (p_what == NOTIFICATION_RESIZED) {
_update_scroll();
top_layer->update();
minimap->update();
}
}
bool GraphEdit::_filter_input(const Point2 &p_point) {
Ref<Texture> port = get_icon("port", "GraphNode");
Vector2i port_size = Vector2i(port->get_width(), port->get_height());
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn) {
continue;
}
for (int j = 0; j < gn->get_connection_output_count(); j++) {
Vector2 pos = gn->get_connection_output_position(j) + gn->get_position();
if (is_in_hot_zone(pos / zoom, p_point / zoom, port_size, false)) {
return true;
}
}
for (int j = 0; j < gn->get_connection_input_count(); j++) {
Vector2 pos = gn->get_connection_input_position(j) + gn->get_position();
if (is_in_hot_zone(pos / zoom, p_point / zoom, port_size, true)) {
return true;
}
}
}
return false;
}
void GraphEdit::_top_layer_input(const Ref<InputEvent> &p_ev) {
Ref<InputEventMouseButton> mb = p_ev;
if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) {
Ref<Texture> port = get_icon("port", "GraphNode");
Vector2i port_size = Vector2i(port->get_width(), port->get_height());
connecting_valid = false;
click_pos = mb->get_position() / zoom;
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn) {
continue;
}
for (int j = 0; j < gn->get_connection_output_count(); j++) {
Vector2 pos = gn->get_connection_output_position(j) + gn->get_position();
if (is_in_hot_zone(pos / zoom, click_pos, port_size, false)) {
if (valid_left_disconnect_types.has(gn->get_connection_output_type(j))) {
//check disconnect
for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {
if (E->get().from == gn->get_name() && E->get().from_port == j) {
Node *to = get_node(String(E->get().to));
if (Object::cast_to<GraphNode>(to)) {
connecting_from = E->get().to;
connecting_index = E->get().to_port;
connecting_out = false;
connecting_type = Object::cast_to<GraphNode>(to)->get_connection_input_type(E->get().to_port);
connecting_color = Object::cast_to<GraphNode>(to)->get_connection_input_color(E->get().to_port);
connecting_target = false;
connecting_to = pos;
just_disconnected = true;
emit_signal("disconnection_request", E->get().from, E->get().from_port, E->get().to, E->get().to_port);
to = get_node(String(connecting_from)); //maybe it was erased
if (Object::cast_to<GraphNode>(to)) {
connecting = true;
}
return;
}
}
}
}
connecting = true;
connecting_from = gn->get_name();
connecting_index = j;
connecting_out = true;
connecting_type = gn->get_connection_output_type(j);
connecting_color = gn->get_connection_output_color(j);
connecting_target = false;
connecting_to = pos;
just_disconnected = false;
return;
}
}
for (int j = 0; j < gn->get_connection_input_count(); j++) {
Vector2 pos = gn->get_connection_input_position(j) + gn->get_position();
if (is_in_hot_zone(pos / zoom, click_pos, port_size, true)) {
if (right_disconnects || valid_right_disconnect_types.has(gn->get_connection_input_type(j))) {
//check disconnect
for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {
if (E->get().to == gn->get_name() && E->get().to_port == j) {
Node *fr = get_node(String(E->get().from));
if (Object::cast_to<GraphNode>(fr)) {
connecting_from = E->get().from;
connecting_index = E->get().from_port;
connecting_out = true;
connecting_type = Object::cast_to<GraphNode>(fr)->get_connection_output_type(E->get().from_port);
connecting_color = Object::cast_to<GraphNode>(fr)->get_connection_output_color(E->get().from_port);
connecting_target = false;
connecting_to = pos;
just_disconnected = true;
emit_signal("disconnection_request", E->get().from, E->get().from_port, E->get().to, E->get().to_port);
fr = get_node(String(connecting_from)); //maybe it was erased
if (Object::cast_to<GraphNode>(fr)) {
connecting = true;
}
return;
}
}
}
}
connecting = true;
connecting_from = gn->get_name();
connecting_index = j;
connecting_out = false;
connecting_type = gn->get_connection_input_type(j);
connecting_color = gn->get_connection_input_color(j);
connecting_target = false;
connecting_to = pos;
just_disconnected = false;
return;
}
}
}
}
Ref<InputEventMouseMotion> mm = p_ev;
if (mm.is_valid() && connecting) {
connecting_to = mm->get_position();
connecting_target = false;
top_layer->update();
minimap->update();
connecting_valid = just_disconnected || click_pos.distance_to(connecting_to / zoom) > 20.0;
if (connecting_valid) {
Ref<Texture> port = get_icon("port", "GraphNode");
Vector2i port_size = Vector2i(port->get_width(), port->get_height());
Vector2 mpos = mm->get_position() / zoom;
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn) {
continue;
}
if (!connecting_out) {
for (int j = 0; j < gn->get_connection_output_count(); j++) {
Vector2 pos = gn->get_connection_output_position(j) + gn->get_position();
int type = gn->get_connection_output_type(j);
if ((type == connecting_type || valid_connection_types.has(ConnType(connecting_type, type))) && is_in_hot_zone(pos / zoom, mpos, port_size, false)) {
connecting_target = true;
connecting_to = pos;
connecting_target_to = gn->get_name();
connecting_target_index = j;
return;
}
}
} else {
for (int j = 0; j < gn->get_connection_input_count(); j++) {
Vector2 pos = gn->get_connection_input_position(j) + gn->get_position();
int type = gn->get_connection_input_type(j);
if ((type == connecting_type || valid_connection_types.has(ConnType(connecting_type, type))) && is_in_hot_zone(pos / zoom, mpos, port_size, true)) {
connecting_target = true;
connecting_to = pos;
connecting_target_to = gn->get_name();
connecting_target_index = j;
return;
}
}
}
}
}
}
if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT && !mb->is_pressed()) {
if (connecting_valid) {
if (connecting && connecting_target) {
String from = connecting_from;
int from_slot = connecting_index;
String to = connecting_target_to;
int to_slot = connecting_target_index;
if (!connecting_out) {
SWAP(from, to);
SWAP(from_slot, to_slot);
}
emit_signal("connection_request", from, from_slot, to, to_slot);
} else if (!just_disconnected) {
String from = connecting_from;
int from_slot = connecting_index;
Vector2 ofs = Vector2(mb->get_position().x, mb->get_position().y);
if (!connecting_out) {
emit_signal("connection_from_empty", from, from_slot, ofs);
} else {
emit_signal("connection_to_empty", from, from_slot, ofs);
}
}
}
connecting = false;
top_layer->update();
minimap->update();
update();
connections_layer->update();
}
}
bool GraphEdit::_check_clickable_control(Control *p_control, const Vector2 &pos) {
if (p_control->is_set_as_toplevel() || !p_control->is_visible()) {
return false;
}
if (!p_control->has_point(pos) || p_control->get_mouse_filter() == MOUSE_FILTER_IGNORE) {
//test children
for (int i = 0; i < p_control->get_child_count(); i++) {
Control *subchild = Object::cast_to<Control>(p_control->get_child(i));
if (!subchild) {
continue;
}
if (_check_clickable_control(subchild, pos - subchild->get_position())) {
return true;
}
}
return false;
} else {
return true;
}
}
bool GraphEdit::is_in_hot_zone(const Vector2 &pos, const Vector2 &p_mouse_pos, const Vector2i &p_port_size, bool p_left) {
if (p_left) {
if (!Rect2(
pos.x - p_port_size.x / 2 - port_grab_distance_horizontal,
pos.y - p_port_size.y / 2 - port_grab_distance_vertical / 2,
p_port_size.x + port_grab_distance_horizontal,
p_port_size.y + port_grab_distance_vertical)
.has_point(p_mouse_pos)) {
return false;
}
} else {
if (!Rect2(
pos.x - p_port_size.x / 2,
pos.y - p_port_size.y / 2 - port_grab_distance_vertical / 2,
p_port_size.x + port_grab_distance_horizontal,
p_port_size.y + port_grab_distance_vertical)
.has_point(p_mouse_pos)) {
return false;
}
}
for (int i = 0; i < get_child_count(); i++) {
Control *child = Object::cast_to<Control>(get_child(i));
if (!child) {
continue;
}
Rect2 rect = child->get_rect();
// To prevent intersections with other nodes.
rect.position *= zoom;
rect.size *= zoom;
if (rect.has_point(p_mouse_pos)) {
//check sub-controls
Vector2 subpos = p_mouse_pos - rect.position;
for (int j = 0; j < child->get_child_count(); j++) {
Control *subchild = Object::cast_to<Control>(child->get_child(j));
if (!subchild) {
continue;
}
if (_check_clickable_control(subchild, subpos - subchild->get_position())) {
return false;
}
}
}
}
return true;
}
template <class Vector2>
static _FORCE_INLINE_ Vector2 _bezier_interp(real_t t, Vector2 start, Vector2 control_1, Vector2 control_2, Vector2 end) {
/* Formula from Wikipedia article on Bezier curves. */
real_t omt = (1.0 - t);
real_t omt2 = omt * omt;
real_t omt3 = omt2 * omt;
real_t t2 = t * t;
real_t t3 = t2 * t;
return start * omt3 + control_1 * omt2 * t * 3.0 + control_2 * omt * t2 * 3.0 + end * t3;
}
void GraphEdit::_bake_segment2d(Vector<Vector2> &points, Vector<Color> &colors, float p_begin, float p_end, const Vector2 &p_a, const Vector2 &p_out, const Vector2 &p_b, const Vector2 &p_in, int p_depth, int p_min_depth, int p_max_depth, float p_tol, const Color &p_color, const Color &p_to_color, int &lines) const {
float mp = p_begin + (p_end - p_begin) * 0.5;
Vector2 beg = _bezier_interp(p_begin, p_a, p_a + p_out, p_b + p_in, p_b);
Vector2 mid = _bezier_interp(mp, p_a, p_a + p_out, p_b + p_in, p_b);
Vector2 end = _bezier_interp(p_end, p_a, p_a + p_out, p_b + p_in, p_b);
Vector2 na = (mid - beg).normalized();
Vector2 nb = (end - mid).normalized();
float dp = Math::rad2deg(Math::acos(na.dot(nb)));
if (p_depth >= p_min_depth && (dp < p_tol || p_depth >= p_max_depth)) {
points.push_back((beg + end) * 0.5);
colors.push_back(p_color.linear_interpolate(p_to_color, mp));
lines++;
} else {
_bake_segment2d(points, colors, p_begin, mp, p_a, p_out, p_b, p_in, p_depth + 1, p_min_depth, p_max_depth, p_tol, p_color, p_to_color, lines);
_bake_segment2d(points, colors, mp, p_end, p_a, p_out, p_b, p_in, p_depth + 1, p_min_depth, p_max_depth, p_tol, p_color, p_to_color, lines);
}
}
void GraphEdit::_draw_cos_line(CanvasItem *p_where, const Vector2 &p_from, const Vector2 &p_to, const Color &p_color, const Color &p_to_color, float p_width, float p_bezier_ratio) {
//cubic bezier code
float diff = p_to.x - p_from.x;
float cp_offset;
int cp_len = get_constant("bezier_len_pos") * p_bezier_ratio;
int cp_neg_len = get_constant("bezier_len_neg") * p_bezier_ratio;
if (diff > 0) {
cp_offset = MIN(cp_len, diff * 0.5);
} else {
cp_offset = MAX(MIN(cp_len - diff, cp_neg_len), -diff * 0.5);
}
Vector2 c1 = Vector2(cp_offset * zoom, 0);
Vector2 c2 = Vector2(-cp_offset * zoom, 0);
int lines = 0;
Vector<Point2> points;
Vector<Color> colors;
points.push_back(p_from);
colors.push_back(p_color);
_bake_segment2d(points, colors, 0, 1, p_from, c1, p_to, c2, 0, 3, 9, 3, p_color, p_to_color, lines);
points.push_back(p_to);
colors.push_back(p_to_color);
#ifdef TOOLS_ENABLED
p_where->draw_polyline_colors(points, colors, Math::floor(p_width * EDSCALE), true);
#else
p_where->draw_polyline_colors(points, colors, p_width, true);
#endif
}
void GraphEdit::_connections_layer_draw() {
Color activity_color = get_color("activity");
//draw connections
List<List<Connection>::Element *> to_erase;
for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {
NodePath fromnp(E->get().from);
Node *from = get_node(fromnp);
if (!from) {
to_erase.push_back(E);
continue;
}
GraphNode *gfrom = Object::cast_to<GraphNode>(from);
if (!gfrom) {
to_erase.push_back(E);
continue;
}
NodePath tonp(E->get().to);
Node *to = get_node(tonp);
if (!to) {
to_erase.push_back(E);
continue;
}
GraphNode *gto = Object::cast_to<GraphNode>(to);
if (!gto) {
to_erase.push_back(E);
continue;
}
Vector2 frompos = gfrom->get_connection_output_position(E->get().from_port) + gfrom->get_offset() * zoom;
Color color = gfrom->get_connection_output_color(E->get().from_port);
Vector2 topos = gto->get_connection_input_position(E->get().to_port) + gto->get_offset() * zoom;
Color tocolor = gto->get_connection_input_color(E->get().to_port);
if (E->get().activity > 0) {
color = color.linear_interpolate(activity_color, E->get().activity);
tocolor = tocolor.linear_interpolate(activity_color, E->get().activity);
}
_draw_cos_line(connections_layer, frompos, topos, color, tocolor);
}
while (to_erase.size()) {
connections.erase(to_erase.front()->get());
to_erase.pop_front();
}
}
void GraphEdit::_top_layer_draw() {
_update_scroll();
if (connecting) {
Node *fromn = get_node(connecting_from);
ERR_FAIL_COND(!fromn);
GraphNode *from = Object::cast_to<GraphNode>(fromn);
ERR_FAIL_COND(!from);
Vector2 pos;
if (connecting_out) {
pos = from->get_connection_output_position(connecting_index);
} else {
pos = from->get_connection_input_position(connecting_index);
}
pos += from->get_position();
Vector2 topos;
topos = connecting_to;
Color col = connecting_color;
if (connecting_target) {
col.r += 0.4;
col.g += 0.4;
col.b += 0.4;
}
if (!connecting_out) {
SWAP(pos, topos);
}
_draw_cos_line(top_layer, pos, topos, col, col);
}
if (box_selecting) {
top_layer->draw_rect(box_selecting_rect, get_color("selection_fill"));
top_layer->draw_rect(box_selecting_rect, get_color("selection_stroke"), false);
}
}
void GraphEdit::_minimap_draw() {
if (!is_minimap_enabled()) {
return;
}
minimap->update_minimap();
// Draw the minimap background.
Rect2 minimap_rect = Rect2(Point2(), minimap->get_size());
minimap->draw_style_box(minimap->get_stylebox("bg"), minimap_rect);
Vector2 graph_offset = minimap->_get_graph_offset();
Vector2 minimap_offset = minimap->minimap_offset;
// Draw comment graph nodes.
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn || !gn->is_comment()) {
continue;
}
Vector2 node_position = minimap->_convert_from_graph_position(gn->get_offset() * zoom - graph_offset) + minimap_offset;
Vector2 node_size = minimap->_convert_from_graph_position(gn->get_size() * zoom);
Rect2 node_rect = Rect2(node_position, node_size);
Ref<StyleBoxFlat> sb_minimap = minimap->get_stylebox("node")->duplicate();
// Override default values with colors provided by the GraphNode's stylebox, if possible.
Ref<StyleBoxFlat> sbf = gn->get_stylebox(gn->is_selected() ? "commentfocus" : "comment");
if (sbf.is_valid()) {
Color node_color = sbf->get_bg_color();
sb_minimap->set_bg_color(node_color);
}
minimap->draw_style_box(sb_minimap, node_rect);
}
// Draw regular graph nodes.
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn || gn->is_comment()) {
continue;
}
Vector2 node_position = minimap->_convert_from_graph_position(gn->get_offset() * zoom - graph_offset) + minimap_offset;
Vector2 node_size = minimap->_convert_from_graph_position(gn->get_size() * zoom);
Rect2 node_rect = Rect2(node_position, node_size);
Ref<StyleBoxFlat> sb_minimap = minimap->get_stylebox("node")->duplicate();
// Override default values with colors provided by the GraphNode's stylebox, if possible.
Ref<StyleBoxFlat> sbf = gn->get_stylebox(gn->is_selected() ? "selectedframe" : "frame");
if (sbf.is_valid()) {
Color node_color = sbf->get_border_color();
sb_minimap->set_bg_color(node_color);
}
minimap->draw_style_box(sb_minimap, node_rect);
}
// Draw node connections.
Color activity_color = get_color("activity");
for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {
NodePath fromnp(E->get().from);
Node *from = get_node(fromnp);
if (!from) {
continue;
}
GraphNode *gfrom = Object::cast_to<GraphNode>(from);
if (!gfrom) {
continue;
}
NodePath tonp(E->get().to);
Node *to = get_node(tonp);
if (!to) {
continue;
}
GraphNode *gto = Object::cast_to<GraphNode>(to);
if (!gto) {
continue;
}
Vector2 from_slot_position = gfrom->get_offset() * zoom + gfrom->get_connection_output_position(E->get().from_port);
Vector2 from_position = minimap->_convert_from_graph_position(from_slot_position - graph_offset) + minimap_offset;
Color from_color = gfrom->get_connection_output_color(E->get().from_port);
Vector2 to_slot_position = gto->get_offset() * zoom + gto->get_connection_input_position(E->get().to_port);
Vector2 to_position = minimap->_convert_from_graph_position(to_slot_position - graph_offset) + minimap_offset;
Color to_color = gto->get_connection_input_color(E->get().to_port);
if (E->get().activity > 0) {
from_color = from_color.linear_interpolate(activity_color, E->get().activity);
to_color = to_color.linear_interpolate(activity_color, E->get().activity);
}
_draw_cos_line(minimap, from_position, to_position, from_color, to_color, 1.0, 0.5);
}
// Draw the "camera" viewport.
Rect2 camera_rect = minimap->get_camera_rect();
minimap->draw_style_box(minimap->get_stylebox("camera"), camera_rect);
// Draw the resizer control.
Ref<Texture> resizer = minimap->get_icon("resizer");
Color resizer_color = minimap->get_color("resizer_color");
minimap->draw_texture(resizer, Point2(), resizer_color);
}
void GraphEdit::set_selected(Node *p_child) {
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn) {
continue;
}
gn->set_selected(gn == p_child);
}
}
void GraphEdit::_gui_input(const Ref<InputEvent> &p_ev) {
ERR_FAIL_COND(p_ev.is_null());
Ref<InputEventMouseMotion> mm = p_ev;
if (mm.is_valid() && (mm->get_button_mask() & BUTTON_MASK_MIDDLE || (mm->get_button_mask() & BUTTON_MASK_LEFT && Input::get_singleton()->is_key_pressed(KEY_SPACE)))) {
Vector2i relative = Input::get_singleton()->warp_mouse_motion(mm, get_global_rect());
h_scroll->set_value(h_scroll->get_value() - relative.x);
v_scroll->set_value(v_scroll->get_value() - relative.y);
}
if (mm.is_valid() && dragging) {
if (!moving_selection) {
emit_signal("_begin_node_move");
moving_selection = true;
}
just_selected = true;
drag_accum += mm->get_relative();
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (gn && gn->is_selected()) {
Vector2 pos = (gn->get_drag_from() * zoom + drag_accum) / zoom;
// Snapping can be toggled temporarily by holding down Ctrl.
// This is done here as to not toggle the grid when holding down Ctrl.
if (is_using_snap() ^ Input::get_singleton()->is_key_pressed(KEY_CONTROL)) {
const int snap = get_snap();
pos = pos.snapped(Vector2(snap, snap));
}
gn->set_offset(pos);
}
}
}
if (mm.is_valid() && box_selecting) {
box_selecting_to = mm->get_position();
box_selecting_rect = Rect2(MIN(box_selecting_from.x, box_selecting_to.x),
MIN(box_selecting_from.y, box_selecting_to.y),
ABS(box_selecting_from.x - box_selecting_to.x),
ABS(box_selecting_from.y - box_selecting_to.y));
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn) {
continue;
}
Rect2 r = gn->get_rect();
r.size *= zoom;
bool in_box = r.intersects(box_selecting_rect);
if (in_box) {
gn->set_selected(box_selection_mode_additive);
} else {
gn->set_selected(previous_selected.find(gn) != nullptr);
}
}
top_layer->update();
minimap->update();
}
Ref<InputEventMouseButton> b = p_ev;
if (b.is_valid()) {
if (b->get_button_index() == BUTTON_RIGHT && b->is_pressed()) {
if (box_selecting) {
box_selecting = false;
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (!gn) {
continue;
}
gn->set_selected(previous_selected.find(gn) != nullptr);
}
top_layer->update();
minimap->update();
} else {
if (connecting) {
connecting = false;
top_layer->update();
minimap->update();
} else {
emit_signal("popup_request", b->get_global_position());
}
}
}
if (b->get_button_index() == BUTTON_LEFT && !b->is_pressed() && dragging) {
if (!just_selected && drag_accum == Vector2() && Input::get_singleton()->is_key_pressed(KEY_CONTROL)) {
//deselect current node
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (gn) {
Rect2 r = gn->get_rect();
r.size *= zoom;
if (r.has_point(b->get_position())) {
gn->set_selected(false);
}
}
}
}
if (drag_accum != Vector2()) {
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (gn && gn->is_selected()) {
gn->set_drag(false);
}
}
}
if (moving_selection) {
emit_signal("_end_node_move");
moving_selection = false;
}
dragging = false;
top_layer->update();
minimap->update();
update();
connections_layer->update();
}
if (b->get_button_index() == BUTTON_LEFT && b->is_pressed()) {
GraphNode *gn = nullptr;
// Find node which was clicked on.
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn_selected = Object::cast_to<GraphNode>(get_child(i));
if (!gn_selected) {
continue;
}
if (gn_selected->is_resizing()) {
continue;
}
if (gn_selected->has_point((b->get_position() - gn_selected->get_position()) / zoom)) {
gn = gn_selected;
break;
}
}
if (gn) {
if (_filter_input(b->get_position())) {
return;
}
// Left-clicked on a node, select it.
dragging = true;
drag_accum = Vector2();
just_selected = !gn->is_selected();
if (!gn->is_selected() && !Input::get_singleton()->is_key_pressed(KEY_CONTROL)) {
for (int i = 0; i < get_child_count(); i++) {
GraphNode *o_gn = Object::cast_to<GraphNode>(get_child(i));
if (!o_gn) {
continue;
}
o_gn->set_selected(o_gn == gn);
}
}
gn->set_selected(true);
for (int i = 0; i < get_child_count(); i++) {
GraphNode *o_gn = Object::cast_to<GraphNode>(get_child(i));
if (!o_gn) {
continue;
}
if (o_gn->is_selected()) {
o_gn->set_drag(true);
}
}
} else {
if (_filter_input(b->get_position())) {
return;
}
if (Input::get_singleton()->is_key_pressed(KEY_SPACE)) {
return;
}
// Left-clicked on empty space, start box select.
box_selecting = true;
box_selecting_from = b->get_position();
if (b->get_control()) {
box_selection_mode_additive = true;
previous_selected.clear();
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i));
if (!gn2 || !gn2->is_selected()) {
continue;
}
previous_selected.push_back(gn2);
}
} else if (b->get_shift()) {
box_selection_mode_additive = false;
previous_selected.clear();
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i));
if (!gn2 || !gn2->is_selected()) {
continue;
}
previous_selected.push_back(gn2);
}
} else {
box_selection_mode_additive = true;
previous_selected.clear();
for (int i = get_child_count() - 1; i >= 0; i--) {
GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i));
if (!gn2) {
continue;
}
gn2->set_selected(false);
}
}
}
}
if (b->get_button_index() == BUTTON_LEFT && !b->is_pressed() && box_selecting) {
// Box selection ended. Nodes were selected during mouse movement.
box_selecting = false;
box_selecting_rect = Rect2();
previous_selected.clear();
top_layer->update();
minimap->update();
}
int scroll_direction = (b->get_button_index() == BUTTON_WHEEL_DOWN) - (b->get_button_index() == BUTTON_WHEEL_UP);
if (scroll_direction != 0) {
if (b->get_control()) {
if (b->get_shift()) {
// Horizontal scrolling.
h_scroll->set_value(h_scroll->get_value() + (h_scroll->get_page() * b->get_factor() / 8) * scroll_direction);
} else {
// Vertical scrolling.
v_scroll->set_value(v_scroll->get_value() + (v_scroll->get_page() * b->get_factor() / 8) * scroll_direction);
}
} else {
// Zooming.
set_zoom_custom(scroll_direction < 0 ? zoom * zoom_step : zoom / zoom_step, b->get_position());
}
}
}
Ref<InputEventKey> k = p_ev;
if (k.is_valid()) {
if (k->get_scancode() == KEY_D && k->is_pressed() && k->get_command()) {
emit_signal("duplicate_nodes_request");
accept_event();
}
if (k->get_scancode() == KEY_C && k->is_pressed() && k->get_command()) {
emit_signal("copy_nodes_request");
accept_event();
}
if (k->get_scancode() == KEY_V && k->is_pressed() && k->get_command()) {
emit_signal("paste_nodes_request");
accept_event();
}
if (k->get_scancode() == KEY_DELETE && k->is_pressed()) {
Array nodes;
for (int i = 0; i < get_child_count(); i++) {
GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
if (gn) {
if (gn->is_selected() && gn->is_close_button_visible()) {
nodes.push_back(gn->get_name());
}
}
}
emit_signal("delete_nodes_request", nodes);
accept_event();
}
}
Ref<InputEventMagnifyGesture> magnify_gesture = p_ev;
if (magnify_gesture.is_valid()) {
set_zoom_custom(zoom * magnify_gesture->get_factor(), magnify_gesture->get_position());
}
Ref<InputEventPanGesture> pan_gesture = p_ev;
if (pan_gesture.is_valid()) {
h_scroll->set_value(h_scroll->get_value() + h_scroll->get_page() * pan_gesture->get_delta().x / 8);
v_scroll->set_value(v_scroll->get_value() + v_scroll->get_page() * pan_gesture->get_delta().y / 8);
}
}
void GraphEdit::set_connection_activity(const StringName &p_from, int p_from_port, const StringName &p_to, int p_to_port, float p_activity) {
for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {
if (E->get().from == p_from && E->get().from_port == p_from_port && E->get().to == p_to && E->get().to_port == p_to_port) {
if (Math::is_equal_approx(E->get().activity, p_activity)) {
//update only if changed
top_layer->update();
minimap->update();
connections_layer->update();
}
E->get().activity = p_activity;
return;
}
}
}
void GraphEdit::clear_connections() {
connections.clear();
minimap->update();
update();
connections_layer->update();
}
void GraphEdit::set_zoom(float p_zoom) {
set_zoom_custom(p_zoom, get_size() / 2);
}
void GraphEdit::set_zoom_custom(float p_zoom, const Vector2 &p_center) {
p_zoom = CLAMP(p_zoom, zoom_min, zoom_max);
if (zoom == p_zoom) {
return;
}
Vector2 sbofs = (Vector2(h_scroll->get_value(), v_scroll->get_value()) + p_center) / zoom;
zoom = p_zoom;
top_layer->update();
zoom_minus->set_disabled(zoom == zoom_min);
zoom_plus->set_disabled(zoom == zoom_max);
_update_scroll();
minimap->update();
connections_layer->update();
if (is_visible_in_tree()) {
Vector2 ofs = sbofs * zoom - p_center;
h_scroll->set_value(ofs.x);
v_scroll->set_value(ofs.y);
}
_update_zoom_label();
update();
}
float GraphEdit::get_zoom() const {
return zoom;
}
void GraphEdit::set_zoom_step(float p_zoom_step) {
p_zoom_step = abs(p_zoom_step);
if (zoom_step == p_zoom_step) {
return;
}
zoom_step = p_zoom_step;
}
float GraphEdit::get_zoom_step() const {
return zoom_step;
}
void GraphEdit::set_zoom_min(float p_zoom_min) {
ERR_FAIL_COND_MSG(p_zoom_min > zoom_max, "Cannot set min zoom level greater than max zoom level.");
if (zoom_min == p_zoom_min) {
return;
}
zoom_min = p_zoom_min;
set_zoom(zoom);
}
float GraphEdit::get_zoom_min() const {
return zoom_min;
}
void GraphEdit::set_zoom_max(float p_zoom_max) {
ERR_FAIL_COND_MSG(p_zoom_max < zoom_min, "Cannot set max zoom level lesser than min zoom level.");
if (zoom_max == p_zoom_max) {
return;
}
zoom_max = p_zoom_max;
set_zoom(zoom);
}
float GraphEdit::get_zoom_max() const {
return zoom_max;
}
void GraphEdit::set_show_zoom_label(bool p_enable) {
if (zoom_label->is_visible() == p_enable) {
return;
}
zoom_label->set_visible(p_enable);
}
bool GraphEdit::is_showing_zoom_label() const {
return zoom_label->is_visible();
}
void GraphEdit::set_right_disconnects(bool p_enable) {
right_disconnects = p_enable;
}
bool GraphEdit::is_right_disconnects_enabled() const {
return right_disconnects;
}
void GraphEdit::add_valid_right_disconnect_type(int p_type) {
valid_right_disconnect_types.insert(p_type);
}
void GraphEdit::remove_valid_right_disconnect_type(int p_type) {
valid_right_disconnect_types.erase(p_type);
}
void GraphEdit::add_valid_left_disconnect_type(int p_type) {
valid_left_disconnect_types.insert(p_type);
}
void GraphEdit::remove_valid_left_disconnect_type(int p_type) {
valid_left_disconnect_types.erase(p_type);
}
Array GraphEdit::_get_connection_list() const {
List<Connection> conns;
get_connection_list(&conns);
Array arr;
for (List<Connection>::Element *E = conns.front(); E; E = E->next()) {
Dictionary d;
d["from"] = E->get().from;
d["from_port"] = E->get().from_port;
d["to"] = E->get().to;
d["to_port"] = E->get().to_port;
arr.push_back(d);
}
return arr;
}
void GraphEdit::_zoom_minus() {
set_zoom(zoom / zoom_step);
}
void GraphEdit::_zoom_reset() {
set_zoom(1);
}
void GraphEdit::_zoom_plus() {
set_zoom(zoom * zoom_step);
}
void GraphEdit::_update_zoom_label() {
int zoom_percent = static_cast<int>(Math::round(zoom * 100));
String zoom_text = itos(zoom_percent) + "%";
zoom_label->set_text(zoom_text);
}
void GraphEdit::add_valid_connection_type(int p_type, int p_with_type) {
ConnType ct(p_type, p_with_type);
valid_connection_types.insert(ct);
}
void GraphEdit::remove_valid_connection_type(int p_type, int p_with_type) {
ConnType ct(p_type, p_with_type);
valid_connection_types.erase(ct);
}
bool GraphEdit::is_valid_connection_type(int p_type, int p_with_type) const {
ConnType ct(p_type, p_with_type);
return valid_connection_types.has(ct);
}
void GraphEdit::set_use_snap(bool p_enable) {
snap_button->set_pressed(p_enable);
update();
}
bool GraphEdit::is_using_snap() const {
return snap_button->is_pressed();
}
int GraphEdit::get_snap() const {
return snap_amount->get_value();
}
void GraphEdit::set_snap(int p_snap) {
ERR_FAIL_COND(p_snap < 5);
snap_amount->set_value(p_snap);
update();
}
void GraphEdit::_snap_toggled() {
update();
}
void GraphEdit::_snap_value_changed(double) {
update();
}
void GraphEdit::set_minimap_size(Vector2 p_size) {
minimap->set_size(p_size);
Vector2 minimap_size = minimap->get_size(); // The size might've been adjusted by the minimum size.
minimap->set_anchors_preset(Control::PRESET_BOTTOM_RIGHT);
minimap->set_margin(Margin::MARGIN_LEFT, -minimap_size.x - MINIMAP_OFFSET);
minimap->set_margin(Margin::MARGIN_TOP, -minimap_size.y - MINIMAP_OFFSET);
minimap->set_margin(Margin::MARGIN_RIGHT, -MINIMAP_OFFSET);
minimap->set_margin(Margin::MARGIN_BOTTOM, -MINIMAP_OFFSET);
minimap->update();
}
Vector2 GraphEdit::get_minimap_size() const {
return minimap->get_size();
}
void GraphEdit::set_minimap_opacity(float p_opacity) {
minimap->set_modulate(Color(1, 1, 1, p_opacity));
minimap->update();
}
float GraphEdit::get_minimap_opacity() const {
Color minimap_modulate = minimap->get_modulate();
return minimap_modulate.a;
}
void GraphEdit::set_minimap_enabled(bool p_enable) {
minimap_button->set_pressed(p_enable);
_minimap_toggled();
minimap->update();
}
bool GraphEdit::is_minimap_enabled() const {
return minimap_button->is_pressed();
}
void GraphEdit::_minimap_toggled() {
if (is_minimap_enabled()) {
minimap->set_visible(true);
minimap->update();
} else {
minimap->set_visible(false);
}
}
HBoxContainer *GraphEdit::get_zoom_hbox() {
return zoom_hb;
}
void GraphEdit::_bind_methods() {
ClassDB::bind_method(D_METHOD("connect_node", "from", "from_port", "to", "to_port"), &GraphEdit::connect_node);
ClassDB::bind_method(D_METHOD("is_node_connected", "from", "from_port", "to", "to_port"), &GraphEdit::is_node_connected);
ClassDB::bind_method(D_METHOD("disconnect_node", "from", "from_port", "to", "to_port"), &GraphEdit::disconnect_node);
ClassDB::bind_method(D_METHOD("set_connection_activity", "from", "from_port", "to", "to_port", "amount"), &GraphEdit::set_connection_activity);
ClassDB::bind_method(D_METHOD("get_connection_list"), &GraphEdit::_get_connection_list);
ClassDB::bind_method(D_METHOD("clear_connections"), &GraphEdit::clear_connections);
ClassDB::bind_method(D_METHOD("get_scroll_ofs"), &GraphEdit::get_scroll_ofs);
ClassDB::bind_method(D_METHOD("set_scroll_ofs", "ofs"), &GraphEdit::set_scroll_ofs);
ClassDB::bind_method(D_METHOD("add_valid_right_disconnect_type", "type"), &GraphEdit::add_valid_right_disconnect_type);
ClassDB::bind_method(D_METHOD("remove_valid_right_disconnect_type", "type"), &GraphEdit::remove_valid_right_disconnect_type);
ClassDB::bind_method(D_METHOD("add_valid_left_disconnect_type", "type"), &GraphEdit::add_valid_left_disconnect_type);
ClassDB::bind_method(D_METHOD("remove_valid_left_disconnect_type", "type"), &GraphEdit::remove_valid_left_disconnect_type);
ClassDB::bind_method(D_METHOD("add_valid_connection_type", "from_type", "to_type"), &GraphEdit::add_valid_connection_type);
ClassDB::bind_method(D_METHOD("remove_valid_connection_type", "from_type", "to_type"), &GraphEdit::remove_valid_connection_type);
ClassDB::bind_method(D_METHOD("is_valid_connection_type", "from_type", "to_type"), &GraphEdit::is_valid_connection_type);
ClassDB::bind_method(D_METHOD("set_zoom", "p_zoom"), &GraphEdit::set_zoom);
ClassDB::bind_method(D_METHOD("get_zoom"), &GraphEdit::get_zoom);
ClassDB::bind_method(D_METHOD("set_zoom_min", "zoom_min"), &GraphEdit::set_zoom_min);
ClassDB::bind_method(D_METHOD("get_zoom_min"), &GraphEdit::get_zoom_min);
ClassDB::bind_method(D_METHOD("set_zoom_max", "zoom_max"), &GraphEdit::set_zoom_max);
ClassDB::bind_method(D_METHOD("get_zoom_max"), &GraphEdit::get_zoom_max);
ClassDB::bind_method(D_METHOD("set_zoom_step", "zoom_step"), &GraphEdit::set_zoom_step);
ClassDB::bind_method(D_METHOD("get_zoom_step"), &GraphEdit::get_zoom_step);
ClassDB::bind_method(D_METHOD("set_show_zoom_label", "enable"), &GraphEdit::set_show_zoom_label);
ClassDB::bind_method(D_METHOD("is_showing_zoom_label"), &GraphEdit::is_showing_zoom_label);
ClassDB::bind_method(D_METHOD("set_snap", "pixels"), &GraphEdit::set_snap);
ClassDB::bind_method(D_METHOD("get_snap"), &GraphEdit::get_snap);
ClassDB::bind_method(D_METHOD("set_use_snap", "enable"), &GraphEdit::set_use_snap);
ClassDB::bind_method(D_METHOD("is_using_snap"), &GraphEdit::is_using_snap);
ClassDB::bind_method(D_METHOD("set_minimap_size", "p_size"), &GraphEdit::set_minimap_size);
ClassDB::bind_method(D_METHOD("get_minimap_size"), &GraphEdit::get_minimap_size);
ClassDB::bind_method(D_METHOD("set_minimap_opacity", "p_opacity"), &GraphEdit::set_minimap_opacity);
ClassDB::bind_method(D_METHOD("get_minimap_opacity"), &GraphEdit::get_minimap_opacity);
ClassDB::bind_method(D_METHOD("set_minimap_enabled", "enable"), &GraphEdit::set_minimap_enabled);
ClassDB::bind_method(D_METHOD("is_minimap_enabled"), &GraphEdit::is_minimap_enabled);
ClassDB::bind_method(D_METHOD("_minimap_toggled"), &GraphEdit::_minimap_toggled);
ClassDB::bind_method(D_METHOD("_minimap_draw"), &GraphEdit::_minimap_draw);
ClassDB::bind_method(D_METHOD("set_right_disconnects", "enable"), &GraphEdit::set_right_disconnects);
ClassDB::bind_method(D_METHOD("is_right_disconnects_enabled"), &GraphEdit::is_right_disconnects_enabled);
ClassDB::bind_method(D_METHOD("_graph_node_moved"), &GraphEdit::_graph_node_moved);
ClassDB::bind_method(D_METHOD("_graph_node_selected"), &GraphEdit::_graph_node_selected);
ClassDB::bind_method(D_METHOD("_graph_node_unselected"), &GraphEdit::_graph_node_unselected);
ClassDB::bind_method(D_METHOD("_graph_node_raised"), &GraphEdit::_graph_node_raised);
ClassDB::bind_method(D_METHOD("_graph_node_slot_updated"), &GraphEdit::_graph_node_slot_updated);
ClassDB::bind_method(D_METHOD("_top_layer_input"), &GraphEdit::_top_layer_input);
ClassDB::bind_method(D_METHOD("_top_layer_draw"), &GraphEdit::_top_layer_draw);
ClassDB::bind_method(D_METHOD("_scroll_moved"), &GraphEdit::_scroll_moved);
ClassDB::bind_method(D_METHOD("_zoom_minus"), &GraphEdit::_zoom_minus);
ClassDB::bind_method(D_METHOD("_zoom_reset"), &GraphEdit::_zoom_reset);
ClassDB::bind_method(D_METHOD("_zoom_plus"), &GraphEdit::_zoom_plus);
ClassDB::bind_method(D_METHOD("_snap_toggled"), &GraphEdit::_snap_toggled);
ClassDB::bind_method(D_METHOD("_snap_value_changed"), &GraphEdit::_snap_value_changed);
ClassDB::bind_method(D_METHOD("_gui_input"), &GraphEdit::_gui_input);
ClassDB::bind_method(D_METHOD("_update_scroll_offset"), &GraphEdit::_update_scroll_offset);
ClassDB::bind_method(D_METHOD("_connections_layer_draw"), &GraphEdit::_connections_layer_draw);
ClassDB::bind_method(D_METHOD("get_zoom_hbox"), &GraphEdit::get_zoom_hbox);
ClassDB::bind_method(D_METHOD("set_selected", "node"), &GraphEdit::set_selected);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "right_disconnects"), "set_right_disconnects", "is_right_disconnects_enabled");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_offset"), "set_scroll_ofs", "get_scroll_ofs");
ADD_PROPERTY(PropertyInfo(Variant::INT, "snap_distance"), "set_snap", "get_snap");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "use_snap"), "set_use_snap", "is_using_snap");
ADD_GROUP("Zoom", "");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "zoom"), "set_zoom", "get_zoom");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "zoom_min"), "set_zoom_min", "get_zoom_min");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "zoom_max"), "set_zoom_max", "get_zoom_max");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "zoom_step"), "set_zoom_step", "get_zoom_step");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_zoom_label"), "set_show_zoom_label", "is_showing_zoom_label");
ADD_GROUP("Minimap", "minimap");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "minimap_enabled"), "set_minimap_enabled", "is_minimap_enabled");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "minimap_size"), "set_minimap_size", "get_minimap_size");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "minimap_opacity"), "set_minimap_opacity", "get_minimap_opacity");
ADD_SIGNAL(MethodInfo("connection_request", PropertyInfo(Variant::STRING, "from"), PropertyInfo(Variant::INT, "from_slot"), PropertyInfo(Variant::STRING, "to"), PropertyInfo(Variant::INT, "to_slot")));
ADD_SIGNAL(MethodInfo("disconnection_request", PropertyInfo(Variant::STRING, "from"), PropertyInfo(Variant::INT, "from_slot"), PropertyInfo(Variant::STRING, "to"), PropertyInfo(Variant::INT, "to_slot")));
ADD_SIGNAL(MethodInfo("popup_request", PropertyInfo(Variant::VECTOR2, "position")));
ADD_SIGNAL(MethodInfo("duplicate_nodes_request"));
ADD_SIGNAL(MethodInfo("copy_nodes_request"));
ADD_SIGNAL(MethodInfo("paste_nodes_request"));
ADD_SIGNAL(MethodInfo("node_selected", PropertyInfo(Variant::OBJECT, "node", PROPERTY_HINT_RESOURCE_TYPE, "Node")));
ADD_SIGNAL(MethodInfo("node_unselected", PropertyInfo(Variant::OBJECT, "node", PROPERTY_HINT_RESOURCE_TYPE, "Node")));
ADD_SIGNAL(MethodInfo("connection_to_empty", PropertyInfo(Variant::STRING, "from"), PropertyInfo(Variant::INT, "from_slot"), PropertyInfo(Variant::VECTOR2, "release_position")));
ADD_SIGNAL(MethodInfo("connection_from_empty", PropertyInfo(Variant::STRING, "to"), PropertyInfo(Variant::INT, "to_slot"), PropertyInfo(Variant::VECTOR2, "release_position")));
ADD_SIGNAL(MethodInfo("delete_nodes_request", PropertyInfo(Variant::ARRAY, "nodes")));
ADD_SIGNAL(MethodInfo("_begin_node_move"));
ADD_SIGNAL(MethodInfo("_end_node_move"));
ADD_SIGNAL(MethodInfo("scroll_offset_changed", PropertyInfo(Variant::VECTOR2, "ofs")));
}
GraphEdit::GraphEdit() {
set_focus_mode(FOCUS_ALL);
// Allow dezooming 8 times from the default zoom level.
// At low zoom levels, text is unreadable due to its small size and poor filtering,
// but this is still useful for previewing and navigation.
zoom_min = (1 / Math::pow(zoom_step, 8));
// Allow zooming 4 times from the default zoom level.
zoom_max = (1 * Math::pow(zoom_step, 4));
top_layer = memnew(GraphEditFilter(this));
add_child(top_layer);
top_layer->set_mouse_filter(MOUSE_FILTER_PASS);
top_layer->set_anchors_and_margins_preset(Control::PRESET_WIDE);
top_layer->connect("draw", this, "_top_layer_draw");
top_layer->connect("gui_input", this, "_top_layer_input");
connections_layer = memnew(Control);
add_child(connections_layer);
connections_layer->connect("draw", this, "_connections_layer_draw");
connections_layer->set_name("CLAYER");
connections_layer->set_disable_visibility_clip(true); // so it can draw freely and be offset
connections_layer->set_mouse_filter(MOUSE_FILTER_IGNORE);
h_scroll = memnew(HScrollBar);
h_scroll->set_name("_h_scroll");
top_layer->add_child(h_scroll);
v_scroll = memnew(VScrollBar);
v_scroll->set_name("_v_scroll");
top_layer->add_child(v_scroll);
//set large minmax so it can scroll even if not resized yet
h_scroll->set_min(-10000);
h_scroll->set_max(10000);
v_scroll->set_min(-10000);
v_scroll->set_max(10000);
h_scroll->connect("value_changed", this, "_scroll_moved");
v_scroll->connect("value_changed", this, "_scroll_moved");
zoom_hb = memnew(HBoxContainer);
top_layer->add_child(zoom_hb);
zoom_hb->set_position(Vector2(10, 10));
zoom_label = memnew(Label);
zoom_hb->add_child(zoom_label);
zoom_label->set_visible(false);
zoom_label->set_v_size_flags(Control::SIZE_SHRINK_CENTER);
zoom_label->set_align(Label::ALIGN_CENTER);
#ifdef TOOLS_ENABLED
zoom_label->set_custom_minimum_size(Size2(48, 0) * EDSCALE);
#else
zoom_label->set_custom_minimum_size(Size2(48, 0));
#endif
_update_zoom_label();
zoom_minus = memnew(ToolButton);
zoom_hb->add_child(zoom_minus);
zoom_minus->set_tooltip(RTR("Zoom Out"));
zoom_minus->connect("pressed", this, "_zoom_minus");
zoom_minus->set_focus_mode(FOCUS_NONE);
zoom_reset = memnew(ToolButton);
zoom_hb->add_child(zoom_reset);
zoom_reset->set_tooltip(RTR("Zoom Reset"));
zoom_reset->connect("pressed", this, "_zoom_reset");
zoom_reset->set_focus_mode(FOCUS_NONE);
zoom_plus = memnew(ToolButton);
zoom_hb->add_child(zoom_plus);
zoom_plus->set_tooltip(RTR("Zoom In"));
zoom_plus->connect("pressed", this, "_zoom_plus");
zoom_plus->set_focus_mode(FOCUS_NONE);
snap_button = memnew(ToolButton);
snap_button->set_toggle_mode(true);
snap_button->set_tooltip(RTR("Enable snap and show grid."));
snap_button->connect("pressed", this, "_snap_toggled");
snap_button->set_pressed(true);
snap_button->set_focus_mode(FOCUS_NONE);
zoom_hb->add_child(snap_button);
snap_amount = memnew(SpinBox);
snap_amount->set_min(5);
snap_amount->set_max(100);
snap_amount->set_step(1);
snap_amount->set_value(20);
snap_amount->connect("value_changed", this, "_snap_value_changed");
zoom_hb->add_child(snap_amount);
minimap_button = memnew(Button);
minimap_button->set_flat(true);
minimap_button->set_toggle_mode(true);
minimap_button->set_tooltip(RTR("Enable grid minimap."));
minimap_button->connect("pressed", this, "_minimap_toggled");
minimap_button->set_pressed(true);
minimap_button->set_focus_mode(FOCUS_NONE);
zoom_hb->add_child(minimap_button);
Vector2 minimap_size = Vector2(240, 160);
float minimap_opacity = 0.65;
minimap = memnew(GraphEditMinimap(this));
top_layer->add_child(minimap);
minimap->set_name("_minimap");
minimap->set_modulate(Color(1, 1, 1, minimap_opacity));
minimap->set_mouse_filter(MOUSE_FILTER_PASS);
minimap->set_custom_minimum_size(Vector2(50, 50));
minimap->set_size(minimap_size);
minimap->set_anchors_preset(Control::PRESET_BOTTOM_RIGHT);
minimap->set_margin(Margin::MARGIN_LEFT, -minimap_size.x - MINIMAP_OFFSET);
minimap->set_margin(Margin::MARGIN_TOP, -minimap_size.y - MINIMAP_OFFSET);
minimap->set_margin(Margin::MARGIN_RIGHT, -MINIMAP_OFFSET);
minimap->set_margin(Margin::MARGIN_BOTTOM, -MINIMAP_OFFSET);
minimap->connect("draw", this, "_minimap_draw");
set_clip_contents(true);
}
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