initial commit, 4.5 stable

scene/theme/theme_owner.h

@@ -0,0 +1,81 @@
+/**************************************************************************/
+/*  theme_owner.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 "core/object/object.h"
+#include "scene/resources/theme.h"
+
+class Control;
+class Node;
+class ThemeContext;
+class Window;
+
+class ThemeOwner : public Object {
+	Node *holder = nullptr;
+
+	Control *owner_control = nullptr;
+	Window *owner_window = nullptr;
+	ThemeContext *owner_context = nullptr;
+
+	void _owner_context_changed();
+	ThemeContext *_get_active_owner_context() const;
+
+	Node *_get_next_owner_node(Node *p_from_node) const;
+	Ref<Theme> _get_owner_node_theme(Node *p_owner_node) const;
+
+public:
+	// Theme owner node.
+
+	void set_owner_node(Node *p_node);
+	Node *get_owner_node() const;
+	bool has_owner_node() const;
+
+	void set_owner_context(ThemeContext *p_context, bool p_propagate = true);
+
+	// Theme propagation.
+
+	void assign_theme_on_parented(Node *p_for_node);
+	void clear_theme_on_unparented(Node *p_for_node);
+	void propagate_theme_changed(Node *p_to_node, Node *p_owner_node, bool p_notify, bool p_assign);
+
+	// Theme lookup.
+
+	void get_theme_type_dependencies(const Node *p_for_node, const StringName &p_theme_type, Vector<StringName> &r_result) const;
+
+	Variant get_theme_item_in_types(Theme::DataType p_data_type, const StringName &p_name, const Vector<StringName> &p_theme_types);
+	bool has_theme_item_in_types(Theme::DataType p_data_type, const StringName &p_name, const Vector<StringName> &p_theme_types);
+
+	float get_theme_default_base_scale();
+	Ref<Font> get_theme_default_font();
+	int get_theme_default_font_size();
+
+	ThemeOwner(Node *p_holder) { holder = p_holder; }
+};