/*************************************************************************/
/*  gradient_texture_editor_plugin.h                                     */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2017 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.                */
/*************************************************************************/
#ifndef GRADIENT_TEXTURE_EDITOR_PLUGIN_H
#define GRADIENT_TEXTURE_EDITOR_PLUGIN_H

#include "editor/editor_node.h"
#include "editor/editor_plugin.h"
#include "scene/resources/texture.h"

class GradientTextureEdit : public Control {

	GDCLASS(GradientTextureEdit, Control);

	PopupPanel *popup;
	ColorPicker *picker;

	Ref<ImageTexture> checker;

	bool grabbing;
	int grabbed;
	Vector<GradientTexture::Point> points;

	void _draw_checker(int x, int y, int w, int h);
	void _color_changed(const Color &p_color);
	int _get_point_from_pos(int x);
	void _show_color_picker();

protected:
	void _gui_input(const Ref<InputEvent> &p_event);
	void _notification(int p_what);
	static void _bind_methods();

public:
	void set_ramp(const Vector<float> &p_offsets, const Vector<Color> &p_colors);
	Vector<float> get_offsets() const;
	Vector<Color> get_colors() const;
	void set_points(Vector<GradientTexture::Point> &p_points);
	Vector<GradientTexture::Point> &get_points();
	virtual Size2 get_minimum_size() const;

	GradientTextureEdit();
	virtual ~GradientTextureEdit();
};

class GradientTextureEditorPlugin : public EditorPlugin {

	GDCLASS(GradientTextureEditorPlugin, EditorPlugin);

	bool _2d;
	Ref<GradientTexture> gradient_texture_ref;
	GradientTextureEdit *ramp_editor;
	EditorNode *editor;
	ToolButton *gradient_button;

protected:
	static void _bind_methods();
	void _ramp_changed();
	void _undo_redo_gradient_texture(const Vector<float> &offsets, const Vector<Color> &colors);

public:
	virtual String get_name() const { return "GradientTexture"; }
	bool has_main_screen() const { return false; }
	virtual void edit(Object *p_node);
	virtual bool handles(Object *p_node) const;
	virtual void make_visible(bool p_visible);

	GradientTextureEditorPlugin(EditorNode *p_node);
	~GradientTextureEditorPlugin();
};

#endif // GRADIENT_TEXTURE_EDITOR_PLUGIN_H