154 lines
4.8 KiB
C++
154 lines
4.8 KiB
C++
/*************************************************************************/
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/* curve_editor_plugin.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef CURVE_EDITOR_PLUGIN_H
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#define CURVE_EDITOR_PLUGIN_H
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#include "editor/editor_node.h"
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#include "editor/editor_plugin.h"
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#include "scene/resources/curve.h"
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// Edits a y(x) curve
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class CurveEditor : public Control {
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GDCLASS(CurveEditor, Control)
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public:
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CurveEditor();
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Size2 get_minimum_size() const;
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void set_curve(Ref<Curve> curve);
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enum PresetID {
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PRESET_FLAT0 = 0,
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PRESET_FLAT1,
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PRESET_LINEAR,
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PRESET_EASE_IN,
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PRESET_EASE_OUT,
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PRESET_SMOOTHSTEP,
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PRESET_COUNT
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};
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enum ContextAction {
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CONTEXT_ADD_POINT = 0,
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CONTEXT_REMOVE_POINT,
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CONTEXT_LINEAR,
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CONTEXT_LEFT_LINEAR,
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CONTEXT_RIGHT_LINEAR
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};
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enum TangentIndex {
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TANGENT_NONE = -1,
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TANGENT_LEFT = 0,
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TANGENT_RIGHT = 1
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};
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protected:
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void _notification(int p_what);
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static void _bind_methods();
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private:
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void on_gui_input(const Ref<InputEvent> &p_event);
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void on_preset_item_selected(int preset_id);
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void _curve_changed();
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void on_context_menu_item_selected(int action_id);
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void open_context_menu(Vector2 pos);
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int get_point_at(Vector2 pos) const;
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TangentIndex get_tangent_at(Vector2 pos) const;
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void add_point(Vector2 pos);
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void remove_point(int index);
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void toggle_linear(TangentIndex tangent = TANGENT_NONE);
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void set_selected_point(int index);
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void set_hover_point_index(int index);
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void update_view_transform();
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Vector2 get_tangent_view_pos(int i, TangentIndex tangent) const;
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Vector2 get_view_pos(Vector2 world_pos) const;
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Vector2 get_world_pos(Vector2 view_pos) const;
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void _draw();
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void stroke_rect(Rect2 rect, Color color);
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private:
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Transform2D _world_to_view;
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Ref<Curve> _curve_ref;
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PopupMenu *_context_menu;
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PopupMenu *_presets_menu;
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Array _undo_data;
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bool _has_undo_data;
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Vector2 _context_click_pos;
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int _selected_point;
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int _hover_point;
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TangentIndex _selected_tangent;
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bool _dragging;
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// Constant
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float _hover_radius;
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float _tangents_length;
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};
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class CurveEditorPlugin : public EditorPlugin {
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GDCLASS(CurveEditorPlugin, EditorPlugin)
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public:
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CurveEditorPlugin(EditorNode *p_node);
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~CurveEditorPlugin();
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String get_name() const { return "Curve"; }
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bool has_main_screen() const { return false; }
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void edit(Object *p_object);
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bool handles(Object *p_object) const;
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void make_visible(bool p_visible);
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private:
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static void _bind_methods();
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void _curve_texture_changed();
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private:
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CurveEditor *_view;
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Ref<Resource> _current_ref;
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EditorNode *_editor_node;
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ToolButton *_toggle_button;
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};
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class CurvePreviewGenerator : public EditorResourcePreviewGenerator {
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GDCLASS(CurvePreviewGenerator, EditorResourcePreviewGenerator)
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public:
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bool handles(const String &p_type) const;
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Ref<Texture> generate(const Ref<Resource> &p_from);
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};
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#endif // CURVE_EDITOR_PLUGIN_H
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