godot/scene/2d/canvas_modulate.cpp

136 lines
5.2 KiB
C++

/**************************************************************************/
/* canvas_modulate.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 "canvas_modulate.h"
void CanvasModulate::_on_in_canvas_visibility_changed(bool p_new_visibility) {
RID canvas = get_canvas();
StringName group_name = "_canvas_modulate_" + itos(canvas.get_id());
ERR_FAIL_COND_MSG(p_new_visibility == is_in_group(group_name), vformat("CanvasModulate becoming %s in the canvas already %s in the modulate group. Buggy logic, please report.", p_new_visibility ? "visible" : "invisible", p_new_visibility ? "was" : "was not"));
if (p_new_visibility) {
bool has_active_canvas_modulate = get_tree()->has_group(group_name); // Group would be removed if empty; otherwise one CanvasModulate within must be active.
add_to_group(group_name);
if (!has_active_canvas_modulate) {
is_active = true;
RS::get_singleton()->canvas_set_modulate(canvas, color);
}
} else {
remove_from_group(group_name);
if (is_active) {
is_active = false;
CanvasModulate *new_active = Object::cast_to<CanvasModulate>(get_tree()->get_first_node_in_group(group_name));
if (new_active) {
new_active->is_active = true;
RS::get_singleton()->canvas_set_modulate(canvas, new_active->color);
} else {
RS::get_singleton()->canvas_set_modulate(canvas, Color(1, 1, 1, 1));
}
}
}
update_configuration_warnings();
}
void CanvasModulate::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_ENTER_CANVAS: {
is_in_canvas = true;
bool visible_in_tree = is_visible_in_tree();
if (visible_in_tree) {
_on_in_canvas_visibility_changed(true);
}
was_visible_in_tree = visible_in_tree;
} break;
case NOTIFICATION_EXIT_CANVAS: {
is_in_canvas = false;
if (was_visible_in_tree) {
_on_in_canvas_visibility_changed(false);
}
} break;
case NOTIFICATION_VISIBILITY_CHANGED: {
if (!is_in_canvas) {
return;
}
bool visible_in_tree = is_visible_in_tree();
if (visible_in_tree == was_visible_in_tree) {
return;
}
_on_in_canvas_visibility_changed(visible_in_tree);
was_visible_in_tree = visible_in_tree;
} break;
}
}
void CanvasModulate::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_color", "color"), &CanvasModulate::set_color);
ClassDB::bind_method(D_METHOD("get_color"), &CanvasModulate::get_color);
ADD_PROPERTY(PropertyInfo(Variant::COLOR, "color"), "set_color", "get_color");
}
void CanvasModulate::set_color(const Color &p_color) {
color = p_color;
if (is_active) {
RS::get_singleton()->canvas_set_modulate(get_canvas(), color);
}
}
Color CanvasModulate::get_color() const {
return color;
}
Array CanvasModulate::get_configuration_warnings() const {
Array warnings = Node::get_configuration_warnings();
if (is_in_canvas && is_visible_in_tree()) {
List<Node *> nodes;
get_tree()->get_nodes_in_group("_canvas_modulate_" + itos(get_canvas().get_id()), &nodes);
if (nodes.size() > 1) {
warnings.push_back(RTR("Only one visible CanvasModulate is allowed per canvas.\nWhen there are more than one, only one of them will be active. Which one is undefined."));
}
}
return warnings;
}
CanvasModulate::CanvasModulate() {
}
CanvasModulate::~CanvasModulate() {
}