mirror of
https://github.com/godotengine/godot
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513 lines
18 KiB
C++
513 lines
18 KiB
C++
/**************************************************************************/
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/* theme_db.cpp */
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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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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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#include "theme_db.h"
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#include "core/config/project_settings.h"
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#include "core/io/resource_loader.h"
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#include "scene/gui/control.h"
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#include "scene/main/node.h"
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#include "scene/main/window.h"
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#include "scene/resources/font.h"
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#include "scene/resources/style_box.h"
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#include "scene/resources/texture.h"
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#include "scene/theme/default_theme.h"
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#include "servers/text_server.h"
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// Default engine theme creation and configuration.
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void ThemeDB::initialize_theme() {
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// Default theme-related project settings.
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// Allow creating the default theme at a different scale to suit higher/lower base resolutions.
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float default_theme_scale = GLOBAL_DEF(PropertyInfo(Variant::FLOAT, "gui/theme/default_theme_scale", PROPERTY_HINT_RANGE, "0.5,8,0.01", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED), 1.0);
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String project_theme_path = GLOBAL_DEF_RST_BASIC(PropertyInfo(Variant::STRING, "gui/theme/custom", PROPERTY_HINT_FILE, "*.tres,*.res,*.theme", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED), "");
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String project_font_path = GLOBAL_DEF_RST_BASIC(PropertyInfo(Variant::STRING, "gui/theme/custom_font", PROPERTY_HINT_FILE, "*.tres,*.res,*.otf,*.ttf,*.woff,*.woff2,*.fnt,*.font,*.pfb,*.pfm", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED), "");
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TextServer::FontAntialiasing font_antialiasing = (TextServer::FontAntialiasing)(int)GLOBAL_DEF_RST(PropertyInfo(Variant::INT, "gui/theme/default_font_antialiasing", PROPERTY_HINT_ENUM, "None,Grayscale,LCD Subpixel", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED), 1);
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TextServer::Hinting font_hinting = (TextServer::Hinting)(int)GLOBAL_DEF_RST(PropertyInfo(Variant::INT, "gui/theme/default_font_hinting", PROPERTY_HINT_ENUM, "None,Light,Normal", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED), TextServer::HINTING_LIGHT);
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TextServer::SubpixelPositioning font_subpixel_positioning = (TextServer::SubpixelPositioning)(int)GLOBAL_DEF_RST(PropertyInfo(Variant::INT, "gui/theme/default_font_subpixel_positioning", PROPERTY_HINT_ENUM, "Disabled,Auto,One Half of a Pixel,One Quarter of a Pixel", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_RESTART_IF_CHANGED), TextServer::SUBPIXEL_POSITIONING_AUTO);
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const bool font_msdf = GLOBAL_DEF_RST("gui/theme/default_font_multichannel_signed_distance_field", false);
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const bool font_generate_mipmaps = GLOBAL_DEF_RST("gui/theme/default_font_generate_mipmaps", false);
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GLOBAL_DEF_RST(PropertyInfo(Variant::INT, "gui/theme/lcd_subpixel_layout", PROPERTY_HINT_ENUM, "Disabled,Horizontal RGB,Horizontal BGR,Vertical RGB,Vertical BGR"), 1);
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ProjectSettings::get_singleton()->set_restart_if_changed("gui/theme/lcd_subpixel_layout", false);
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// Attempt to load custom project theme and font.
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if (!project_theme_path.is_empty()) {
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Ref<Theme> theme = ResourceLoader::load(project_theme_path);
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if (theme.is_valid()) {
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set_project_theme(theme);
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} else {
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ERR_PRINT("Error loading custom project theme '" + project_theme_path + "'");
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}
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}
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Ref<Font> project_font;
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if (!project_font_path.is_empty()) {
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project_font = ResourceLoader::load(project_font_path);
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if (project_font.is_valid()) {
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set_fallback_font(project_font);
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} else {
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ERR_PRINT("Error loading custom project font '" + project_font_path + "'");
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}
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}
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// Always generate the default theme to serve as a fallback for all required theme definitions.
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if (RenderingServer::get_singleton()) {
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make_default_theme(default_theme_scale, project_font, font_subpixel_positioning, font_hinting, font_antialiasing, font_msdf, font_generate_mipmaps);
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}
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_init_default_theme_context();
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}
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void ThemeDB::initialize_theme_noproject() {
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if (RenderingServer::get_singleton()) {
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make_default_theme(1.0, Ref<Font>());
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}
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_init_default_theme_context();
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}
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void ThemeDB::finalize_theme() {
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if (!RenderingServer::get_singleton()) {
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WARN_PRINT("Finalizing theme when there is no RenderingServer is an error; check the order of operations.");
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}
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_finalize_theme_contexts();
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default_theme.unref();
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fallback_font.unref();
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fallback_icon.unref();
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fallback_stylebox.unref();
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}
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// Global Theme resources.
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void ThemeDB::set_default_theme(const Ref<Theme> &p_default) {
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default_theme = p_default;
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}
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Ref<Theme> ThemeDB::get_default_theme() {
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return default_theme;
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}
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void ThemeDB::set_project_theme(const Ref<Theme> &p_project_default) {
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project_theme = p_project_default;
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}
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Ref<Theme> ThemeDB::get_project_theme() {
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return project_theme;
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}
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// Universal fallback values for theme item types.
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void ThemeDB::set_fallback_base_scale(float p_base_scale) {
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if (fallback_base_scale == p_base_scale) {
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return;
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}
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fallback_base_scale = p_base_scale;
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emit_signal(SNAME("fallback_changed"));
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}
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float ThemeDB::get_fallback_base_scale() {
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return fallback_base_scale;
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}
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void ThemeDB::set_fallback_font(const Ref<Font> &p_font) {
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if (fallback_font == p_font) {
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return;
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}
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fallback_font = p_font;
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emit_signal(SNAME("fallback_changed"));
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}
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Ref<Font> ThemeDB::get_fallback_font() {
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return fallback_font;
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}
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void ThemeDB::set_fallback_font_size(int p_font_size) {
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if (fallback_font_size == p_font_size) {
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return;
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}
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fallback_font_size = p_font_size;
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emit_signal(SNAME("fallback_changed"));
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}
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int ThemeDB::get_fallback_font_size() {
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return fallback_font_size;
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}
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void ThemeDB::set_fallback_icon(const Ref<Texture2D> &p_icon) {
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if (fallback_icon == p_icon) {
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return;
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}
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fallback_icon = p_icon;
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emit_signal(SNAME("fallback_changed"));
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}
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Ref<Texture2D> ThemeDB::get_fallback_icon() {
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return fallback_icon;
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}
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void ThemeDB::set_fallback_stylebox(const Ref<StyleBox> &p_stylebox) {
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if (fallback_stylebox == p_stylebox) {
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return;
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}
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fallback_stylebox = p_stylebox;
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emit_signal(SNAME("fallback_changed"));
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}
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Ref<StyleBox> ThemeDB::get_fallback_stylebox() {
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return fallback_stylebox;
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}
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void ThemeDB::get_native_type_dependencies(const StringName &p_base_type, List<StringName> *p_list) {
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ERR_FAIL_NULL(p_list);
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// TODO: It may make sense to stop at Control/Window, because their parent classes cannot be used in
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// a meaningful way.
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StringName class_name = p_base_type;
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while (class_name != StringName()) {
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p_list->push_back(class_name);
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class_name = ClassDB::get_parent_class_nocheck(class_name);
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}
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}
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// Global theme contexts.
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ThemeContext *ThemeDB::create_theme_context(Node *p_node, List<Ref<Theme>> &p_themes) {
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ERR_FAIL_COND_V(!p_node->is_inside_tree(), nullptr);
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ERR_FAIL_COND_V(theme_contexts.has(p_node), nullptr);
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ERR_FAIL_COND_V(p_themes.is_empty(), nullptr);
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ThemeContext *context = memnew(ThemeContext);
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context->node = p_node;
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context->parent = get_nearest_theme_context(p_node);
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context->set_themes(p_themes);
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theme_contexts[p_node] = context;
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_propagate_theme_context(p_node, context);
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p_node->connect(SceneStringName(tree_exited), callable_mp(this, &ThemeDB::destroy_theme_context).bind(p_node));
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return context;
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}
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void ThemeDB::destroy_theme_context(Node *p_node) {
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ERR_FAIL_COND(!theme_contexts.has(p_node));
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p_node->disconnect(SceneStringName(tree_exited), callable_mp(this, &ThemeDB::destroy_theme_context));
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ThemeContext *context = theme_contexts[p_node];
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theme_contexts.erase(p_node);
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_propagate_theme_context(p_node, context->parent);
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memdelete(context);
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}
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void ThemeDB::_propagate_theme_context(Node *p_from_node, ThemeContext *p_context) {
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Control *from_control = Object::cast_to<Control>(p_from_node);
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Window *from_window = from_control ? nullptr : Object::cast_to<Window>(p_from_node);
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if (from_control) {
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from_control->set_theme_context(p_context);
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} else if (from_window) {
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from_window->set_theme_context(p_context);
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}
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for (int i = 0; i < p_from_node->get_child_count(); i++) {
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Node *child_node = p_from_node->get_child(i);
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// If the child is the root of another global context, stop the propagation
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// in this branch.
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if (theme_contexts.has(child_node)) {
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theme_contexts[child_node]->parent = p_context;
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continue;
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}
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_propagate_theme_context(child_node, p_context);
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}
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}
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void ThemeDB::_init_default_theme_context() {
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default_theme_context = memnew(ThemeContext);
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List<Ref<Theme>> themes;
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// Only add the project theme to the default context when running projects.
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#ifdef TOOLS_ENABLED
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if (!Engine::get_singleton()->is_editor_hint()) {
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themes.push_back(project_theme);
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}
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#else
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themes.push_back(project_theme);
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#endif
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themes.push_back(default_theme);
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default_theme_context->set_themes(themes);
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}
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void ThemeDB::_finalize_theme_contexts() {
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if (default_theme_context) {
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memdelete(default_theme_context);
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default_theme_context = nullptr;
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}
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while (theme_contexts.size()) {
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HashMap<Node *, ThemeContext *>::Iterator E = theme_contexts.begin();
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memdelete(E->value);
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theme_contexts.remove(E);
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}
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}
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ThemeContext *ThemeDB::get_theme_context(Node *p_node) const {
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if (!theme_contexts.has(p_node)) {
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return nullptr;
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}
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return theme_contexts[p_node];
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}
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ThemeContext *ThemeDB::get_default_theme_context() const {
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return default_theme_context;
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}
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ThemeContext *ThemeDB::get_nearest_theme_context(Node *p_for_node) const {
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ERR_FAIL_COND_V(!p_for_node->is_inside_tree(), nullptr);
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Node *parent_node = p_for_node->get_parent();
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while (parent_node) {
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if (theme_contexts.has(parent_node)) {
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return theme_contexts[parent_node];
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}
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parent_node = parent_node->get_parent();
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}
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return nullptr;
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}
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// Theme item binding.
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void ThemeDB::bind_class_item(Theme::DataType p_data_type, const StringName &p_class_name, const StringName &p_prop_name, const StringName &p_item_name, ThemeItemSetter p_setter) {
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ERR_FAIL_COND_MSG(theme_item_binds[p_class_name].has(p_prop_name), vformat("Failed to bind theme item '%s' in class '%s': already bound", p_prop_name, p_class_name));
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ThemeItemBind bind;
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bind.data_type = p_data_type;
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bind.class_name = p_class_name;
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bind.item_name = p_item_name;
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bind.setter = p_setter;
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theme_item_binds[p_class_name][p_prop_name] = bind;
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theme_item_binds_list[p_class_name].push_back(bind);
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}
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void ThemeDB::bind_class_external_item(Theme::DataType p_data_type, const StringName &p_class_name, const StringName &p_prop_name, const StringName &p_item_name, const StringName &p_type_name, ThemeItemSetter p_setter) {
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ERR_FAIL_COND_MSG(theme_item_binds[p_class_name].has(p_prop_name), vformat("Failed to bind theme item '%s' in class '%s': already bound", p_prop_name, p_class_name));
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ThemeItemBind bind;
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bind.data_type = p_data_type;
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bind.class_name = p_class_name;
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bind.item_name = p_item_name;
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bind.type_name = p_type_name;
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bind.external = true;
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bind.setter = p_setter;
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theme_item_binds[p_class_name][p_prop_name] = bind;
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theme_item_binds_list[p_class_name].push_back(bind);
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}
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void ThemeDB::update_class_instance_items(Node *p_instance) {
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ERR_FAIL_NULL(p_instance);
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// Use the hierarchy to initialize all inherited theme caches. Setters carry the necessary
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// context and will set the values appropriately.
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StringName class_name = p_instance->get_class();
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while (class_name != StringName()) {
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HashMap<StringName, HashMap<StringName, ThemeItemBind>>::Iterator E = theme_item_binds.find(class_name);
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if (E) {
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for (const KeyValue<StringName, ThemeItemBind> &F : E->value) {
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F.value.setter(p_instance);
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}
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}
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class_name = ClassDB::get_parent_class_nocheck(class_name);
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}
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}
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void ThemeDB::get_class_items(const StringName &p_class_name, List<ThemeItemBind> *r_list, bool p_include_inherited, Theme::DataType p_filter_type) {
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List<StringName> class_hierarchy;
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StringName class_name = p_class_name;
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while (class_name != StringName()) {
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class_hierarchy.push_front(class_name); // Put parent classes in front.
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class_name = ClassDB::get_parent_class_nocheck(class_name);
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}
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HashSet<StringName> inherited_props;
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for (const StringName &theme_type : class_hierarchy) {
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HashMap<StringName, List<ThemeItemBind>>::Iterator E = theme_item_binds_list.find(theme_type);
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if (E) {
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for (const ThemeItemBind &F : E->value) {
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if (p_filter_type != Theme::DATA_TYPE_MAX && F.data_type != p_filter_type) {
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continue;
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}
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if (inherited_props.has(F.item_name)) {
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continue; // Skip inherited properties.
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}
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if (F.external || F.class_name != p_class_name) {
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inherited_props.insert(F.item_name);
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if (!p_include_inherited) {
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continue; // Track properties defined in parent classes, and skip them.
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}
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}
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r_list->push_back(F);
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}
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}
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}
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}
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void ThemeDB::_sort_theme_items() {
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for (KeyValue<StringName, List<ThemeDB::ThemeItemBind>> &E : theme_item_binds_list) {
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E.value.sort_custom<ThemeItemBind::SortByType>();
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}
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}
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// Object methods.
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void ThemeDB::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_default_theme"), &ThemeDB::get_default_theme);
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ClassDB::bind_method(D_METHOD("get_project_theme"), &ThemeDB::get_project_theme);
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ClassDB::bind_method(D_METHOD("set_fallback_base_scale", "base_scale"), &ThemeDB::set_fallback_base_scale);
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ClassDB::bind_method(D_METHOD("get_fallback_base_scale"), &ThemeDB::get_fallback_base_scale);
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ClassDB::bind_method(D_METHOD("set_fallback_font", "font"), &ThemeDB::set_fallback_font);
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ClassDB::bind_method(D_METHOD("get_fallback_font"), &ThemeDB::get_fallback_font);
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ClassDB::bind_method(D_METHOD("set_fallback_font_size", "font_size"), &ThemeDB::set_fallback_font_size);
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ClassDB::bind_method(D_METHOD("get_fallback_font_size"), &ThemeDB::get_fallback_font_size);
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ClassDB::bind_method(D_METHOD("set_fallback_icon", "icon"), &ThemeDB::set_fallback_icon);
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ClassDB::bind_method(D_METHOD("get_fallback_icon"), &ThemeDB::get_fallback_icon);
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ClassDB::bind_method(D_METHOD("set_fallback_stylebox", "stylebox"), &ThemeDB::set_fallback_stylebox);
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ClassDB::bind_method(D_METHOD("get_fallback_stylebox"), &ThemeDB::get_fallback_stylebox);
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ADD_GROUP("Fallback values", "fallback_");
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ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "fallback_base_scale", PROPERTY_HINT_RANGE, "0.0,2.0,0.01,or_greater"), "set_fallback_base_scale", "get_fallback_base_scale");
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ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "fallback_font", PROPERTY_HINT_RESOURCE_TYPE, "Font", PROPERTY_USAGE_NONE), "set_fallback_font", "get_fallback_font");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "fallback_font_size", PROPERTY_HINT_RANGE, "0,256,1,or_greater,suffix:px"), "set_fallback_font_size", "get_fallback_font_size");
|
|
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "fallback_icon", PROPERTY_HINT_RESOURCE_TYPE, "Texture2D", PROPERTY_USAGE_NONE), "set_fallback_icon", "get_fallback_icon");
|
|
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "fallback_stylebox", PROPERTY_HINT_RESOURCE_TYPE, "StyleBox", PROPERTY_USAGE_NONE), "set_fallback_stylebox", "get_fallback_stylebox");
|
|
|
|
ADD_SIGNAL(MethodInfo("fallback_changed"));
|
|
}
|
|
|
|
// Memory management, reference, and initialization.
|
|
|
|
ThemeDB *ThemeDB::singleton = nullptr;
|
|
|
|
ThemeDB *ThemeDB::get_singleton() {
|
|
return singleton;
|
|
}
|
|
|
|
ThemeDB::ThemeDB() {
|
|
singleton = this;
|
|
if (MessageQueue::get_singleton()) { // May not exist in tests etc.
|
|
callable_mp(this, &ThemeDB::_sort_theme_items).call_deferred();
|
|
}
|
|
}
|
|
|
|
ThemeDB::~ThemeDB() {
|
|
// For technical reasons unit tests recreate and destroy the default
|
|
// theme over and over again. Make sure that finalize_theme() also
|
|
// frees any objects that can be recreated by initialize_theme*().
|
|
|
|
_finalize_theme_contexts();
|
|
|
|
default_theme.unref();
|
|
project_theme.unref();
|
|
|
|
fallback_font.unref();
|
|
fallback_icon.unref();
|
|
fallback_stylebox.unref();
|
|
|
|
singleton = nullptr;
|
|
}
|
|
|
|
void ThemeContext::_emit_changed() {
|
|
emit_signal(CoreStringName(changed));
|
|
}
|
|
|
|
void ThemeContext::set_themes(List<Ref<Theme>> &p_themes) {
|
|
for (const Ref<Theme> &theme : themes) {
|
|
theme->disconnect_changed(callable_mp(this, &ThemeContext::_emit_changed));
|
|
}
|
|
|
|
themes.clear();
|
|
|
|
for (const Ref<Theme> &theme : p_themes) {
|
|
if (theme.is_null()) {
|
|
continue;
|
|
}
|
|
|
|
themes.push_back(theme);
|
|
theme->connect_changed(callable_mp(this, &ThemeContext::_emit_changed));
|
|
}
|
|
|
|
_emit_changed();
|
|
}
|
|
|
|
List<Ref<Theme>> ThemeContext::get_themes() const {
|
|
return themes;
|
|
}
|
|
|
|
Ref<Theme> ThemeContext::get_fallback_theme() const {
|
|
// We expect all contexts to be valid and non-empty, but just in case...
|
|
if (themes.size() == 0) {
|
|
return ThemeDB::get_singleton()->get_default_theme();
|
|
}
|
|
|
|
return themes.back()->get();
|
|
}
|
|
|
|
void ThemeContext::_bind_methods() {
|
|
ADD_SIGNAL(MethodInfo("changed"));
|
|
}
|