/*************************************************************************/ /* curve_editor_plugin.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://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 CURVE_EDITOR_PLUGIN_H #define CURVE_EDITOR_PLUGIN_H #include "editor/editor_node.h" #include "editor/editor_plugin.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(); void stroke_rect(Rect2 rect, Color color); 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 CurveEditorPlugin : public EditorPlugin { GDCLASS(CurveEditorPlugin, EditorPlugin) public: CurveEditorPlugin(EditorNode *p_node); ~CurveEditorPlugin(); String get_name() const { return "Curve"; } bool has_main_screen() const { return false; } void edit(Object *p_object); bool handles(Object *p_object) const; void make_visible(bool p_visible); private: static void _bind_methods(); void _curve_texture_changed(); private: CurveEditor *_view; Ref<Resource> _current_ref; EditorNode *_editor_node; ToolButton *_toggle_button; }; class CurvePreviewGenerator : public EditorResourcePreviewGenerator { GDCLASS(CurvePreviewGenerator, EditorResourcePreviewGenerator) public: bool handles(const String &p_type) const; Ref<Texture> generate(const Ref<Resource> &p_from); }; #endif // CURVE_EDITOR_PLUGIN_H