/*************************************************************************/
/*  path_editor_plugin.h                                                 */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
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/* "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    */
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/*************************************************************************/

#ifndef PATH_EDITOR_PLUGIN_H
#define PATH_EDITOR_PLUGIN_H

#include "editor/spatial_editor_gizmos.h"
#include "scene/3d/path.h"

class PathSpatialGizmo : public EditorSpatialGizmo {

	GDCLASS(PathSpatialGizmo, EditorSpatialGizmo);

	Path *path;
	mutable Vector3 original;
	mutable float orig_in_length;
	mutable float orig_out_length;

public:
	virtual String get_handle_name(int p_idx) const;
	virtual Variant get_handle_value(int p_idx);
	virtual void set_handle(int p_idx, Camera *p_camera, const Point2 &p_point);
	virtual void commit_handle(int p_idx, const Variant &p_restore, bool p_cancel = false);

	virtual void redraw();
	PathSpatialGizmo(Path *p_path = NULL);
};

class PathSpatialGizmoPlugin : public EditorSpatialGizmoPlugin {

	GDCLASS(PathSpatialGizmoPlugin, EditorSpatialGizmoPlugin);

protected:
	Ref<EditorSpatialGizmo> create_gizmo(Spatial *p_spatial);

public:
	String get_name() const;
	int get_priority() const;
	PathSpatialGizmoPlugin();
};

class PathEditorPlugin : public EditorPlugin {

	GDCLASS(PathEditorPlugin, EditorPlugin);

	Separator *sep;
	ToolButton *curve_create;
	ToolButton *curve_edit;
	ToolButton *curve_del;
	ToolButton *curve_close;
	MenuButton *handle_menu;

	EditorNode *editor;

	Path *path;

	void _mode_changed(int p_idx);
	void _close_curve();
	void _handle_option_pressed(int p_option);
	bool handle_clicked;
	bool mirror_handle_angle;
	bool mirror_handle_length;

	enum HandleOption {
		HANDLE_OPTION_ANGLE,
		HANDLE_OPTION_LENGTH
	};

protected:
	void _notification(int p_what);
	static void _bind_methods();

public:
	Path *get_edited_path() { return path; }

	static PathEditorPlugin *singleton;
	virtual bool forward_spatial_gui_input(Camera *p_camera, const Ref<InputEvent> &p_event);

	//virtual bool forward_gui_input(const InputEvent& p_event) { return collision_polygon_editor->forward_gui_input(p_event); }
	//virtual Ref<SpatialEditorGizmo> create_spatial_gizmo(Spatial *p_spatial);
	virtual String get_name() const { return "Path"; }
	bool has_main_screen() const { return false; }
	virtual void edit(Object *p_object);
	virtual bool handles(Object *p_object) const;
	virtual void make_visible(bool p_visible);

	bool mirror_angle_enabled() { return mirror_handle_angle; }
	bool mirror_length_enabled() { return mirror_handle_length; }
	bool is_handle_clicked() { return handle_clicked; }
	void set_handle_clicked(bool clicked) { handle_clicked = clicked; }

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

#endif // PATH_EDITOR_PLUGIN_H
