142 lines
5.5 KiB
C++
142 lines
5.5 KiB
C++
/*************************************************************************/
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/* view_panner.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "view_panner.h"
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#include "core/input/input.h"
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#include "core/os/keyboard.h"
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bool ViewPanner::gui_input(const Ref<InputEvent> &p_event, Rect2 p_canvas_rect) {
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Ref<InputEventMouseButton> mb = p_event;
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if (mb.is_valid()) {
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// Alt modifier is unused, so ignore such events.
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if (mb->is_alt_pressed()) {
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return false;
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}
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Vector2i scroll_vec = Vector2((mb->get_button_index() == MouseButton::WHEEL_RIGHT) - (mb->get_button_index() == MouseButton::WHEEL_LEFT), (mb->get_button_index() == MouseButton::WHEEL_DOWN) - (mb->get_button_index() == MouseButton::WHEEL_UP));
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if (scroll_vec != Vector2()) {
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if (control_scheme == SCROLL_PANS) {
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if (mb->is_ctrl_pressed()) {
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scroll_vec.y *= mb->get_factor();
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callback_helper(zoom_callback, scroll_vec, mb->get_position());
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return true;
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} else {
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Vector2 panning;
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if (mb->is_shift_pressed()) {
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panning.x += mb->get_factor() * scroll_vec.y;
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panning.y += mb->get_factor() * scroll_vec.x;
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} else {
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panning.y += mb->get_factor() * scroll_vec.y;
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panning.x += mb->get_factor() * scroll_vec.x;
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}
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callback_helper(scroll_callback, panning);
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return true;
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}
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} else {
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if (mb->is_ctrl_pressed()) {
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Vector2 panning;
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if (mb->is_shift_pressed()) {
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panning.x += mb->get_factor() * scroll_vec.y;
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panning.y += mb->get_factor() * scroll_vec.x;
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} else {
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panning.y += mb->get_factor() * scroll_vec.y;
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panning.x += mb->get_factor() * scroll_vec.x;
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}
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callback_helper(scroll_callback, panning);
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return true;
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} else if (!mb->is_shift_pressed()) {
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scroll_vec.y *= mb->get_factor();
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callback_helper(zoom_callback, scroll_vec, mb->get_position());
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return true;
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}
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}
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}
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if (mb->get_button_index() == MouseButton::MIDDLE || (mb->get_button_index() == MouseButton::RIGHT && !disable_rmb) || (mb->get_button_index() == MouseButton::LEFT && (Input::get_singleton()->is_key_pressed(Key::SPACE) || (is_dragging && !mb->is_pressed())))) {
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if (mb->is_pressed()) {
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is_dragging = true;
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} else {
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is_dragging = false;
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}
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return true;
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}
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}
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Ref<InputEventMouseMotion> mm = p_event;
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if (mm.is_valid()) {
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if (is_dragging) {
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if (p_canvas_rect != Rect2()) {
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callback_helper(pan_callback, Input::get_singleton()->warp_mouse_motion(mm, p_canvas_rect));
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} else {
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callback_helper(pan_callback, mm->get_relative());
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}
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return true;
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}
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}
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return false;
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}
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void ViewPanner::callback_helper(Callable p_callback, Vector2 p_arg1, Vector2 p_arg2) {
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if (p_callback == zoom_callback) {
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const Variant **argptr = (const Variant **)alloca(sizeof(Variant *) * 2);
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Variant var1 = p_arg1;
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argptr[0] = &var1;
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Variant var2 = p_arg2;
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argptr[1] = &var2;
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Variant result;
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Callable::CallError ce;
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p_callback.call(argptr, 2, result, ce);
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} else {
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const Variant **argptr = (const Variant **)alloca(sizeof(Variant *));
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Variant var = p_arg1;
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argptr[0] = &var;
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Variant result;
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Callable::CallError ce;
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p_callback.call(argptr, 1, result, ce);
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}
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}
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void ViewPanner::set_callbacks(Callable p_scroll_callback, Callable p_pan_callback, Callable p_zoom_callback) {
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scroll_callback = p_scroll_callback;
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pan_callback = p_pan_callback;
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zoom_callback = p_zoom_callback;
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}
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void ViewPanner::set_control_scheme(ControlScheme p_scheme) {
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control_scheme = p_scheme;
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}
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void ViewPanner::set_disable_rmb(bool p_disable) {
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disable_rmb = p_disable;
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}
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