/**************************************************************************/ /* curve_editor_plugin.h */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* 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_inspector.h" #include "editor/editor_plugin.h" #include "editor/editor_resource_preview.h" #include "scene/resources/curve.h" class PopupMenu; // Edits a y(x) curve class CurveEditor : public Control { GDCLASS(CurveEditor, Control); public: CurveEditor(); Size2 get_minimum_size() const override; void set_curve(Ref 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); private: virtual void gui_input(const Ref &p_event) override; 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_ref; PopupMenu *_context_menu = nullptr; PopupMenu *_presets_menu = nullptr; 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; float _gizmo_handle_scale = 1.0; }; class EditorInspectorPluginCurve : public EditorInspectorPlugin { GDCLASS(EditorInspectorPluginCurve, EditorInspectorPlugin); public: virtual bool can_handle(Object *p_object) override; virtual void parse_begin(Object *p_object) override; }; class CurveEditorPlugin : public EditorPlugin { GDCLASS(CurveEditorPlugin, EditorPlugin); public: CurveEditorPlugin(); virtual String get_name() const override { return "Curve"; } }; class CurvePreviewGenerator : public EditorResourcePreviewGenerator { GDCLASS(CurvePreviewGenerator, EditorResourcePreviewGenerator); public: virtual bool handles(const String &p_type) const override; virtual Ref generate(const Ref &p_from, const Size2 &p_size, Dictionary &p_metadata) const override; }; #endif // CURVE_EDITOR_PLUGIN_H