Add Dark theme, Icon theming

configure_general.ui: Add UI Option for Themes

config.cpp: Save Theme Settings

dist/icons/icons.qrc

@@ -1,5 +0,0 @@
-<RCC>
-  <qresource prefix="icons">
-    <file>yuzu.png</file>
-  </qresource>
-</RCC>

dist/qt_themes/default/default.qrc

@@ -0,0 +1,11 @@
+<RCC>
+    <qresource prefix="icons/default">
+        <file alias="index.theme">icons/index.theme</file>
+      
+        <file alias="16x16/checked.png">icons/16x16/checked.png</file>
+
+        <file alias="16x16/failed.png">icons/16x16/failed.png</file>
+      
+        <file alias="256x256/yuzu.png">icons/256x256/yuzu.png</file>
+    </qresource>
+</RCC>

dist/qt_themes/default/icons/index.theme

@@ -0,0 +1,10 @@
+[Icon Theme]
+Name=default
+Comment=default theme
+Directories=16x16,256x256
+ 
+[16x16]
+Size=16
+ 
+[256x256]
+Size=256

dist/qt_themes/qdarkstyle/icons/index.theme

@@ -0,0 +1,11 @@
+[Icon Theme]
+Name=qdarkstyle
+Comment=dark theme
+Inherits=default
+Directories=16x16,256x256
+ 
+[16x16]
+Size=16
+ 
+[256x256]
+Size=256

dist/qt_themes/qdarkstyle/style.qrc

@@ -0,0 +1,49 @@
+<RCC>
+  <qresource prefix="icons/qdarkstyle">
+    <file alias="index.theme">icons/index.theme</file>
+  </qresource>
+  <qresource prefix="qss_icons">
+    <file>rc/up_arrow_disabled.png</file>
+    <file>rc/Hmovetoolbar.png</file>
+    <file>rc/stylesheet-branch-end.png</file>
+    <file>rc/branch_closed-on.png</file>
+    <file>rc/stylesheet-vline.png</file>
+    <file>rc/branch_closed.png</file>
+    <file>rc/branch_open-on.png</file>
+    <file>rc/transparent.png</file>
+    <file>rc/right_arrow_disabled.png</file>
+    <file>rc/sizegrip.png</file>
+    <file>rc/close.png</file>
+    <file>rc/close-hover.png</file>
+    <file>rc/close-pressed.png</file>
+    <file>rc/down_arrow.png</file>
+    <file>rc/Vmovetoolbar.png</file>
+    <file>rc/left_arrow.png</file>
+    <file>rc/stylesheet-branch-more.png</file>
+    <file>rc/up_arrow.png</file>
+    <file>rc/right_arrow.png</file>
+    <file>rc/left_arrow_disabled.png</file>
+    <file>rc/Hsepartoolbar.png</file>
+    <file>rc/branch_open.png</file>
+    <file>rc/Vsepartoolbar.png</file>
+    <file>rc/down_arrow_disabled.png</file>
+    <file>rc/undock.png</file>
+    <file>rc/checkbox_checked_disabled.png</file>
+    <file>rc/checkbox_checked_focus.png</file>
+    <file>rc/checkbox_checked.png</file>
+    <file>rc/checkbox_indeterminate.png</file>
+    <file>rc/checkbox_indeterminate_focus.png</file>
+    <file>rc/checkbox_unchecked_disabled.png</file>
+    <file>rc/checkbox_unchecked_focus.png</file>
+    <file>rc/checkbox_unchecked.png</file>
+    <file>rc/radio_checked_disabled.png</file>
+    <file>rc/radio_checked_focus.png</file>
+    <file>rc/radio_checked.png</file>
+    <file>rc/radio_unchecked_disabled.png</file>
+    <file>rc/radio_unchecked_focus.png</file>
+    <file>rc/radio_unchecked.png</file>
+  </qresource>
+  <qresource prefix="qdarkstyle">
+      <file>style.qss</file>
+  </qresource>
+</RCC>

src/yuzu/about_dialog.cpp

@@ -2,12 +2,14 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <QIcon>
 #include "common/scm_rev.h"
 #include "ui_aboutdialog.h"
 #include "yuzu/about_dialog.h"
 
 AboutDialog::AboutDialog(QWidget* parent) : QDialog(parent), ui(new Ui::AboutDialog) {
     ui->setupUi(this);
+    ui->labelLogo->setPixmap(QIcon::fromTheme("yuzu").pixmap(200));
     ui->labelBuildInfo->setText(ui->labelBuildInfo->text().arg(
         Common::g_build_name, Common::g_scm_branch, Common::g_scm_desc));
 }

src/yuzu/configuration/config.cpp

@@ -107,6 +107,8 @@ void Config::ReadValues() {
     qt_config->endGroup();
 
     qt_config->beginGroup("UI");
+    UISettings::values.theme = qt_config->value("theme", UISettings::themes[0].second).toString();
+    
     qt_config->beginGroup("UILayout");
     UISettings::values.geometry = qt_config->value("geometry").toByteArray();
     UISettings::values.state = qt_config->value("state").toByteArray();

src/yuzu/configuration/configure_general.cpp

@@ -13,6 +13,10 @@ ConfigureGeneral::ConfigureGeneral(QWidget* parent)
 
     ui->setupUi(this);
 
+    for (auto theme : UISettings::themes) {
+        ui->theme_combobox->addItem(theme.first, theme.second);
+    }
+
     this->setConfiguration();
 
     ui->use_cpu_jit->setEnabled(!Core::System::GetInstance().IsPoweredOn());
@@ -24,6 +28,7 @@ ConfigureGeneral::~ConfigureGeneral() {}
 void ConfigureGeneral::setConfiguration() {
     ui->toggle_deepscan->setChecked(UISettings::values.gamedir_deepscan);
     ui->toggle_check_exit->setChecked(UISettings::values.confirm_before_closing);
+    ui->theme_combobox->setCurrentIndex(ui->theme_combobox->findData(UISettings::values.theme));
     ui->use_cpu_jit->setChecked(Settings::values.use_cpu_jit);
     ui->use_docked_mode->setChecked(Settings::values.use_docked_mode);
 }
@@ -31,6 +36,9 @@ void ConfigureGeneral::setConfiguration() {
 void ConfigureGeneral::applyConfiguration() {
     UISettings::values.gamedir_deepscan = ui->toggle_deepscan->isChecked();
     UISettings::values.confirm_before_closing = ui->toggle_check_exit->isChecked();
+    UISettings::values.theme =
+        ui->theme_combobox->itemData(ui->theme_combobox->currentIndex()).toString();
+
     Settings::values.use_cpu_jit = ui->use_cpu_jit->isChecked();
     Settings::values.use_docked_mode = ui->use_docked_mode->isChecked();
     Settings::Apply();

src/yuzu/configuration/configure_general.ui

@@ -83,6 +83,33 @@
         </layout>
       </widget>
      </item>
+     <item>
+      <widget class="QGroupBox" name="theme_group_box">
+       <property name="title">
+        <string>Theme</string>
+       </property>
+       <layout class="QHBoxLayout" name="theme_qhbox_layout">
+        <item>
+         <layout class="QVBoxLayout" name="theme_qvbox_layout">
+          <item>
+           <layout class="QHBoxLayout" name="theme_qhbox_layout_2">
+            <item>
+             <widget class="QLabel" name="theme_label">
+              <property name="text">
+               <string>Theme:</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QComboBox" name="theme_combobox"/>
+            </item>
+           </layout>
+          </item>
+         </layout>
+        </item>
+       </layout>
+      </widget>
+     </item>
      <item>
       <widget class="QGroupBox" name="HotKeysGroupBox">
        <property name="title">

src/yuzu/main.cpp

@@ -95,6 +95,9 @@ GMainWindow::GMainWindow() : config(new Config()), emu_thread(nullptr) {
 
     game_list->PopulateAsync(UISettings::values.gamedir, UISettings::values.gamedir_deepscan);
 
+    default_theme_paths = QIcon::themeSearchPaths();
+    UpdateUITheme();
+
     // Show one-time "callout" messages to the user
     ShowCallouts();
 
@@ -653,6 +656,7 @@ void GMainWindow::OnConfigure() {
     auto result = configureDialog.exec();
     if (result == QDialog::Accepted) {
         configureDialog.applyConfiguration();
+        UpdateUITheme();
         config->Save();
     }
 }
@@ -833,6 +837,31 @@ void GMainWindow::filterBarSetChecked(bool state) {
     emit(OnToggleFilterBar());
 }
 
+void GMainWindow::UpdateUITheme() {
+    QStringList theme_paths(default_theme_paths);
+    if (UISettings::values.theme != UISettings::themes[0].second &&
+        !UISettings::values.theme.isEmpty()) {
+        QString theme_uri(":" + UISettings::values.theme + "/style.qss");
+        QFile f(theme_uri);
+        if (!f.exists()) {
+            LOG_ERROR(Frontend, "Unable to set style, stylesheet file not found");
+        } else {
+            f.open(QFile::ReadOnly | QFile::Text);
+            QTextStream ts(&f);
+            qApp->setStyleSheet(ts.readAll());
+            GMainWindow::setStyleSheet(ts.readAll());
+        }
+        theme_paths.append(QStringList{":/icons/default", ":/icons/" + UISettings::values.theme});
+        QIcon::setThemeName(":/icons/" + UISettings::values.theme);
+    } else {
+        qApp->setStyleSheet("");
+        GMainWindow::setStyleSheet("");
+        theme_paths.append(QStringList{":/icons/default"});
+        QIcon::setThemeName(":/icons/default");
+    }
+    QIcon::setThemeSearchPaths(theme_paths);
+}
+
 #ifdef main
 #undef main
 #endif

src/yuzu/main.h

@@ -166,6 +166,9 @@ private:
 
     QAction* actions_recent_files[max_recent_files_item];
 
+    // stores default icon theme search paths for the platform
+    QStringList default_theme_paths;
+
 protected:
     void dropEvent(QDropEvent* event) override;
     void dragEnterEvent(QDragEnterEvent* event) override;

src/yuzu/ui_settings.h

@@ -15,6 +15,10 @@ namespace UISettings {
 using ContextualShortcut = std::pair<QString, int>;
 using Shortcut = std::pair<QString, ContextualShortcut>;
 
+static const std::array<std::pair<QString, QString>, 2> themes = {
+    {std::make_pair(QString("Default"), QString("default")),
+     std::make_pair(QString("Dark"), QString("qdarkstyle"))}};
+
 struct Values {
     QByteArray geometry;
     QByteArray state;