text: /*************************************************************************/
  /*  gradient_editor_plugin.cpp                                           */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2019 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:                                             */
  /*                                                                       */
  /* 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 "gradient_editor_plugin.h"
  
  #include "canvas_item_editor_plugin.h"
  #include "editor/editor_scale.h"
  #include "spatial_editor_plugin.h"
  
  Size2 GradientEditor::get_minimum_size() const {
  	return Size2(0, 60) * EDSCALE;
  }
  void GradientEditor::_gradient_changed() {
  
  	if (editing)
  		return;
  
  	editing = true;
  	Vector<Gradient::Point> points = gradient->get_points();
  	set_points(points);
  	editing = false;
  }
  
  void GradientEditor::_ramp_changed() {
  
  	editing = true;
  	UndoRedo *undo_redo = EditorNode::get_singleton()->get_undo_redo();
  	undo_redo->create_action(TTR("Gradient Edited"));
  	undo_redo->add_do_method(gradient.ptr(), "set_offsets", get_offsets());
  	undo_redo->add_do_method(gradient.ptr(), "set_colors", get_colors());
  	undo_redo->add_undo_method(gradient.ptr(), "set_offsets", gradient->get_offsets());
  	undo_redo->add_undo_method(gradient.ptr(), "set_colors", gradient->get_colors());
  	undo_redo->commit_action();
  	editing = false;
  }
  
  void GradientEditor::_bind_methods() {
  
  	ClassDB::bind_method("_gradient_changed", &GradientEditor::_gradient_changed);
  	ClassDB::bind_method("_ramp_changed", &GradientEditor::_ramp_changed);
  }
  
  void GradientEditor::set_gradient(const Ref<Gradient> &p_gradient) {
  	gradient = p_gradient;
  	connect("ramp_changed", this, "_ramp_changed");
  	gradient->connect("changed", this, "_gradient_changed");
  	set_points(gradient->get_points());
  }
  
  GradientEditor::GradientEditor() {
  	editing = false;
  }
  
  ///////////////////////
  
  bool EditorInspectorPluginGradient::can_handle(Object *p_object) {
  
  	return Object::cast_to<Gradient>(p_object) != NULL;
  }
  
  void EditorInspectorPluginGradient::parse_begin(Object *p_object) {
  
  	Gradient *gradient = Object::cast_to<Gradient>(p_object);
  	Ref<Gradient> g(gradient);
  
  	GradientEditor *editor = memnew(GradientEditor);
  	editor->set_gradient(g);
  	add_custom_control(editor);
  }
  
  GradientEditorPlugin::GradientEditorPlugin(EditorNode *p_node) {
  
  	Ref<EditorInspectorPluginGradient> plugin;
  	plugin.instance();
  	add_inspector_plugin(plugin);
  }
  