initial commit, 4.5 stable

editor/scene/gradient_editor_plugin.h

@@ -0,0 +1,143 @@
+/**************************************************************************/
+/*  gradient_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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "editor/inspector/editor_inspector.h"
+#include "editor/plugins/editor_plugin.h"
+
+class EditorSpinSlider;
+class ColorPicker;
+class PopupPanel;
+class GradientTexture1D;
+
+class GradientEdit : public Control {
+	GDCLASS(GradientEdit, Control);
+
+	Ref<Gradient> gradient;
+	Ref<GradientTexture1D> preview_texture;
+
+	PopupPanel *popup = nullptr;
+	ColorPicker *picker = nullptr;
+
+	bool snap_enabled = false;
+	int snap_count = 10;
+
+	enum GrabMode {
+		GRAB_NONE,
+		GRAB_ADD,
+		GRAB_MOVE
+	};
+
+	GrabMode grabbing = GRAB_NONE;
+	float pre_grab_offset = 0.5;
+	int pre_grab_index = -1;
+	int selected_index = -1;
+	int hovered_index = -1;
+
+	// Make sure to use the scaled values below.
+	const int BASE_SPACING = 4;
+	const int BASE_HANDLE_WIDTH = 8;
+
+	int draw_spacing = BASE_SPACING;
+	int handle_width = BASE_HANDLE_WIDTH;
+
+	int _get_gradient_rect_width() const;
+
+	void _color_changed(const Color &p_color);
+	void _redraw();
+
+	int _get_point_at(int p_xpos) const;
+	int _predict_insertion_index(float p_offset);
+	void _show_color_picker();
+
+protected:
+	virtual void gui_input(const Ref<InputEvent> &p_event) override;
+	void _notification(int p_what);
+	static void _bind_methods();
+
+public:
+	void set_gradient(const Ref<Gradient> &p_gradient);
+	const Ref<Gradient> &get_gradient() const;
+
+	ColorPicker *get_picker() const;
+	PopupPanel *get_popup() const;
+
+	void set_selected_index(int p_index);
+
+	void add_point(float p_offset, const Color &p_color);
+	void remove_point(int p_index);
+	void set_offset(int p_index, float p_offset);
+	void set_color(int p_index, const Color &p_color);
+	void reverse_gradient();
+
+	void set_snap_enabled(bool p_enabled);
+	void set_snap_count(int p_count);
+
+	GradientEdit();
+};
+
+class GradientEditor : public VBoxContainer {
+	GDCLASS(GradientEditor, VBoxContainer);
+
+	Button *reverse_button = nullptr;
+	Button *snap_button = nullptr;
+	EditorSpinSlider *snap_count_edit = nullptr;
+	GradientEdit *gradient_editor_rect = nullptr;
+
+	void _set_snap_enabled(bool p_enabled);
+	void _set_snap_count(int p_count);
+
+protected:
+	void _notification(int p_what);
+
+public:
+	static const int DEFAULT_SNAP;
+	void set_gradient(const Ref<Gradient> &p_gradient);
+
+	GradientEditor();
+};
+
+class EditorInspectorPluginGradient : public EditorInspectorPlugin {
+	GDCLASS(EditorInspectorPluginGradient, EditorInspectorPlugin);
+
+public:
+	virtual bool can_handle(Object *p_object) override;
+	virtual void parse_begin(Object *p_object) override;
+};
+
+class GradientEditorPlugin : public EditorPlugin {
+	GDCLASS(GradientEditorPlugin, EditorPlugin);
+
+public:
+	virtual String get_plugin_name() const override { return "Gradient"; }
+
+	GradientEditorPlugin();
+};