initial commit, 4.5 stable

editor/scene/2d/abstract_polygon_2d_editor.h

@@ -0,0 +1,177 @@
+/**************************************************************************/
+/*  abstract_polygon_2d_editor.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/plugins/editor_plugin.h"
+#include "scene/2d/node_2d.h"
+#include "scene/gui/box_container.h"
+
+class Button;
+class CanvasItemEditor;
+class ConfirmationDialog;
+
+class AbstractPolygon2DEditor : public HBoxContainer {
+	GDCLASS(AbstractPolygon2DEditor, HBoxContainer);
+
+	Button *button_create = nullptr;
+	Button *button_edit = nullptr;
+	Button *button_delete = nullptr;
+	Button *button_center = nullptr;
+
+	struct Vertex {
+		Vertex() {}
+		Vertex(int p_vertex) :
+				vertex(p_vertex) {}
+		Vertex(int p_polygon, int p_vertex) :
+				polygon(p_polygon),
+				vertex(p_vertex) {}
+
+		bool operator==(const Vertex &p_vertex) const;
+		bool operator!=(const Vertex &p_vertex) const;
+
+		bool valid() const;
+
+		int polygon = -1;
+		int vertex = -1;
+	};
+
+	struct PosVertex : public Vertex {
+		PosVertex() {}
+		PosVertex(const Vertex &p_vertex, const Vector2 &p_pos) :
+				Vertex(p_vertex.polygon, p_vertex.vertex),
+				pos(p_pos) {}
+		PosVertex(int p_polygon, int p_vertex, const Vector2 &p_pos) :
+				Vertex(p_polygon, p_vertex),
+				pos(p_pos) {}
+
+		Vector2 pos;
+	};
+
+	PosVertex edited_point;
+	Vertex hover_point; // point under mouse cursor
+	Vertex selected_point; // currently selected
+	PosVertex edge_point; // adding an edge point?
+	Vector2 original_mouse_pos;
+
+	Vector<Vector2> pre_move_edit;
+	Vector<Vector2> wip;
+	bool wip_active = false;
+	bool wip_destructive = false;
+
+	Vector<Vector<Vector2>> pre_center_move_edit;
+	bool center_drag = false;
+	Vector2 center_drag_origin;
+	bool edit_origin_and_center = false;
+
+	bool _polygon_editing_enabled = false;
+
+	CanvasItemEditor *canvas_item_editor = nullptr;
+	Panel *panel = nullptr;
+	ConfirmationDialog *create_resource = nullptr;
+
+protected:
+	enum {
+		MODE_CREATE,
+		MODE_EDIT,
+		MODE_DELETE,
+		MODE_CONT,
+		CENTER_POLY,
+	};
+
+	int mode = MODE_EDIT;
+
+	virtual void _menu_option(int p_option);
+	void _wip_changed();
+	void _wip_close();
+	void _wip_cancel();
+
+	void _notification(int p_what);
+	void _node_removed(Node *p_node);
+
+	bool _commit_drag();
+
+	void remove_point(const Vertex &p_vertex);
+	Vertex get_active_point() const;
+	PosVertex closest_point(const Vector2 &p_pos) const;
+	PosVertex closest_edge_point(const Vector2 &p_pos) const;
+
+	bool _is_empty() const;
+
+	virtual Node2D *_get_node() const = 0;
+	virtual void _set_node(Node *p_polygon) = 0;
+
+	virtual bool _is_line() const;
+	virtual bool _has_uv() const;
+	virtual int _get_polygon_count() const;
+	virtual Vector2 _get_offset(int p_idx) const;
+	virtual Variant _get_polygon(int p_idx) const;
+	virtual void _set_polygon(int p_idx, const Variant &p_polygon) const;
+
+	virtual void _action_add_polygon(const Variant &p_polygon);
+	virtual void _action_remove_polygon(int p_idx);
+	virtual void _action_set_polygon(int p_idx, const Variant &p_polygon);
+	virtual void _action_set_polygon(int p_idx, const Variant &p_previous, const Variant &p_polygon);
+	virtual void _commit_action();
+
+	virtual Vector2 _get_geometric_center() const;
+
+	virtual bool _has_resource() const;
+	virtual void _create_resource();
+
+public:
+	void disable_polygon_editing(bool p_disable, const String &p_reason);
+
+	bool forward_gui_input(const Ref<InputEvent> &p_event);
+	void forward_canvas_draw_over_viewport(Control *p_overlay);
+	void set_edit_origin_and_center(bool p_enabled);
+
+	void edit(Node *p_polygon);
+	AbstractPolygon2DEditor(bool p_wip_destructive = true);
+};
+
+class AbstractPolygon2DEditorPlugin : public EditorPlugin {
+	GDCLASS(AbstractPolygon2DEditorPlugin, EditorPlugin);
+
+	AbstractPolygon2DEditor *polygon_editor = nullptr;
+	String klass;
+
+public:
+	virtual bool forward_canvas_gui_input(const Ref<InputEvent> &p_event) override { return polygon_editor->forward_gui_input(p_event); }
+	virtual void forward_canvas_draw_over_viewport(Control *p_overlay) override { polygon_editor->forward_canvas_draw_over_viewport(p_overlay); }
+
+	bool has_main_screen() const override { return false; }
+	virtual String get_plugin_name() const override { return klass; }
+	virtual void edit(Object *p_object) override;
+	virtual bool handles(Object *p_object) const override;
+	virtual void make_visible(bool p_visible) override;
+
+	AbstractPolygon2DEditorPlugin(AbstractPolygon2DEditor *p_polygon_editor, const String &p_class);
+};