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/*************************************************************************/
/* curve_editor_plugin.h */
/*************************************************************************/
/* 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. */
/*************************************************************************/
#ifndef CURVE_EDITOR_PLUGIN_H
#define CURVE_EDITOR_PLUGIN_H
#include "editor/editor_node.h"
#include "editor/editor_plugin.h"
#include "editor/editor_resource_preview.h"
#include "scene/resources/curve.h"
// Edits a y(x) curve
class CurveEditor : public Control {
GDCLASS(CurveEditor, Control);
public:
CurveEditor();
Size2 get_minimum_size() const;
void set_curve(Ref<Curve> curve);
enum PresetID {
PRESET_FLAT0 = 0,
PRESET_FLAT1,
PRESET_LINEAR,
PRESET_EASE_IN,
PRESET_EASE_OUT,
PRESET_SMOOTHSTEP,
PRESET_COUNT
};
enum ContextAction {
CONTEXT_ADD_POINT = 0,
CONTEXT_REMOVE_POINT,
CONTEXT_LINEAR,
CONTEXT_LEFT_LINEAR,
CONTEXT_RIGHT_LINEAR
};
enum TangentIndex {
TANGENT_NONE = -1,
TANGENT_LEFT = 0,
TANGENT_RIGHT = 1
};
protected:
void _notification(int p_what);
static void _bind_methods();
private:
void on_gui_input(const Ref<InputEvent> &p_event);
void on_preset_item_selected(int preset_id);
void _curve_changed();
void on_context_menu_item_selected(int action_id);
void open_context_menu(Vector2 pos);
int get_point_at(Vector2 pos) const;
TangentIndex get_tangent_at(Vector2 pos) const;
void add_point(Vector2 pos);
void remove_point(int index);
void toggle_linear(TangentIndex tangent = TANGENT_NONE);
void set_selected_point(int index);
void set_hover_point_index(int index);
void update_view_transform();
Vector2 get_tangent_view_pos(int i, TangentIndex tangent) const;
Vector2 get_view_pos(Vector2 world_pos) const;
Vector2 get_world_pos(Vector2 view_pos) const;
void _draw();
private:
Transform2D _world_to_view;
Ref<Curve> _curve_ref;
PopupMenu *_context_menu;
PopupMenu *_presets_menu;
Array _undo_data;
bool _has_undo_data;
Vector2 _context_click_pos;
int _selected_point;
int _hover_point;
TangentIndex _selected_tangent;
bool _dragging;
// Constant
float _hover_radius;
float _tangents_length;
};
class EditorInspectorPluginCurve : public EditorInspectorPlugin {
GDCLASS(EditorInspectorPluginCurve, EditorInspectorPlugin);
public:
virtual bool can_handle(Object *p_object);
virtual void parse_begin(Object *p_object);
};
class CurveEditorPlugin : public EditorPlugin {
GDCLASS(CurveEditorPlugin, EditorPlugin);
public:
CurveEditorPlugin(EditorNode *p_node);
virtual String get_name() const { return "Curve"; }
};
class CurvePreviewGenerator : public EditorResourcePreviewGenerator {
GDCLASS(CurvePreviewGenerator, EditorResourcePreviewGenerator);
public:
virtual bool handles(const String &p_type) const;
virtual Ref<Texture> generate(const Ref<Resource> &p_from, const Size2 &p_size) const;
};
#endif // CURVE_EDITOR_PLUGIN_H
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