Dark theme for Qt application (#7318)

* Dark theme for Qt application

* Fixed saved application geometry

engine/report/report_html_sim.cpp

@@ -1239,6 +1239,8 @@ void print_html_head( report::sc_html_stream& os, const sim_t& sim )
   os << "<title>Simulationcraft Results</title>\n";
   os << "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />\n";
 
+  os << "<meta name=\"color-scheme\" content=\"light dark\">\n";
+
   // Default target for links. Lets links to wowhead/armory escape iframes (wowhead does not display in iframes at all)
   // Should have no effect on GUI reports or directly viewing the HTML report in a browser
   os << "<base target=\"_top\">\n";

qt/MainWindow.cpp

@@ -112,6 +112,7 @@ void SC_MainWindow::loadHistory()
   {
     savedApplicationGeometry.moveTopLeft( pos.toPoint() );
   }
+  setGeometry(savedApplicationGeometry);
   QVariant maximized = settings.value( "gui/maximized" );
   if ( maximized.isValid() )
   {

qt/Welcome.html

@@ -7,6 +7,7 @@
     <title>Welcome to SimulationCraft</title>
 
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
+	<meta name="color-scheme" content="light dark">
 
     <style type="text/css">
       * { border: none; margin: 0; padding: 0; }

qt/main.cpp

@@ -105,6 +105,14 @@ int main( int argc, char* argv[] )
   }
   a.installTranslator( &myappTranslator );
 
+  // Chromium theme color
+  QString color;
+  color = settings.value( "options/theme_color", "Light" ).toString();
+  if ( color == "Dark" )
+  {
+    qputenv( "QTWEBENGINE_CHROMIUM_FLAGS", "--force-dark-mode --enable-features=WebUIDarkMode" );
+  }
+
   QString iconlocation =
       QStandardPaths::locate( QStandardPaths::AppDataLocation, QString( "icon" ), QStandardPaths::LocateDirectory );
   QDir::addSearchPath( "icon", iconlocation );

qt/sc_OptionsTab.cpp

@@ -15,6 +15,30 @@
 
 #include <QtCore/QDateTime>
 
+#ifdef Q_OS_WIN
+  #include <dwmapi.h>
+  #pragma comment( lib, "Dwmapi.lib" )  // fixes error LNK2019: unresolved external symbol __imp__DwmExtendFrameIntoClientArea
+
+  enum : WORD
+  {
+    DwmwaUseImmersiveDarkMode           = 20,
+    DwmwaUseImmersiveDarkModeBefore20h1 = 19
+  };
+
+  bool setDarkBorderToWindow( HWND hwnd, bool dark )
+  {
+    const BOOL darkBorder = dark ? TRUE : FALSE;
+    const bool ok =
+      SUCCEEDED( DwmSetWindowAttribute( hwnd, DwmwaUseImmersiveDarkMode, &darkBorder, sizeof( darkBorder ) ) ) ||
+      SUCCEEDED( DwmSetWindowAttribute( hwnd, DwmwaUseImmersiveDarkModeBefore20h1, &darkBorder, sizeof( darkBorder ) ) );
+    if ( !ok )
+    {
+      qDebug() << QString( "%1: Unable to set %2 window border." ).arg( __FUNCTION__, dark ? "dark" : "light" );
+    }
+    return ok;
+  }
+#endif
+
 namespace
 {  // unnamed namespace
 
@@ -396,6 +420,11 @@ void SC_OptionsTab::createGlobalsTab()
   globalsLayout_right->addRow( tr( "Statistics Level" ),
                                choice.statistics_level = createChoice( 4, "0", "1", "2", "3" ) );
   globalsLayout_right->addRow( tr( "Deterministic RNG" ), choice.deterministic_rng = createChoice( 2, "Yes", "No" ) );
+
+  globalsLayout_right->addRow( tr( "Theme Color" ), choice.theme_color = createChoice( 2, "Light", "Dark" ) );
+  connect( choice.theme_color, SIGNAL( currentTextChanged( const QString& ) ), this,
+           SLOT( _themeColorChanged( const QString& ) ) );
+
   globalsLayout_right->addRow(
       tr( "Auto-Save Reports" ),
       choice.auto_save = createChoice( 3, "No", "Use current date/time", "Ask for filename on each simulation" ) );
@@ -835,6 +864,7 @@ void SC_OptionsTab::decodeOptions()
   load_setting( settings, "statistics_level", choice.statistics_level, "1" );
   load_setting( settings, "deterministic_rng", choice.deterministic_rng, "No" );
   load_setting( settings, "challenge_mode", choice.challenge_mode );
+  load_setting( settings, "theme_color", choice.theme_color, "Light" );
 
   load_setting( settings, "center_scale_delta", choice.center_scale_delta, "No" );
   load_setting( settings, "scale_over", choice.scale_over );
@@ -931,6 +961,7 @@ void SC_OptionsTab::encodeOptions()
   settings.setValue( "center_scale_delta", choice.center_scale_delta->currentText() );
   settings.setValue( "scale_over", choice.scale_over->currentText() );
   settings.setValue( "challenge_mode", choice.challenge_mode->currentText() );
+  settings.setValue( "theme_color", choice.theme_color->currentText() );
 
   settings.setValue( "plot_points", choice.plots_points->currentText() );
   settings.setValue( "plot_step", choice.plots_step->currentText() );
@@ -1126,6 +1157,8 @@ void SC_OptionsTab::createToolTips()
   choice.reforgeplot_step->setToolTip(
       tr( "The stat difference between two points.\n"
           "It's NOT the number of steps: a lower value will generate more points!" ) );
+
+  choice.theme_color->setToolTip( tr( "Application theme color" ) );
 }
 
 QString SC_OptionsTab::get_globalSettings()
@@ -1604,3 +1637,56 @@ void SC_OptionsTab::_savefilelocation()
 
   auto_save_location = f.selectedFiles().at( 0 );
 }
+
+void SC_OptionsTab::_themeColorChanged( const QString& color )
+{
+  //  if ( qApp->style()->name() != "fusion" )
+  //  {
+  //    qDebug()<<"Current style is not Fusion";
+  //    return;
+  //  }
+
+  if ( color == "Light" )
+  {
+    QPalette pal;
+    QToolTip::setPalette( pal );
+    qApp->setPalette( pal );
+#ifdef Q_OS_WIN
+    setDarkBorderToWindow( (HWND)window()->winId(), false );
+#endif
+  }
+  else if ( color == "Dark" )
+  {
+    QPalette pal;
+    pal.setColor( QPalette::Window, QColor( 52, 54, 58 ) );
+    pal.setColor( QPalette::Button, QColor( 52, 54, 58 ) );
+    pal.setColor( QPalette::Disabled, QPalette::Button, QColor( 40, 41, 45 ) );
+    pal.setColor( QPalette::Base, QColor( 47, 48, 52 ) );
+    pal.setColor( QPalette::Disabled, QPalette::Base, QColor( 35, 36, 40 ) );
+    pal.setColor( QPalette::AlternateBase, QColor( 66, 66, 66 ) );
+    pal.setColor( QPalette::ToolTipBase, QColor( 75, 76, 77 ) );
+
+    pal.setColor( QPalette::Dark, QColor( 66, 66, 66 ) );
+    pal.setColor( QPalette::Light, QColor( 66, 66, 66 ) );
+    pal.setColor( QPalette::Shadow, QColor( 20, 20, 20 ) );
+
+    pal.setColor( QPalette::Text, QColor( 230, 231, 232 ) );
+    pal.setColor( QPalette::Disabled, QPalette::Text, QColor( 127, 127, 127 ) );
+    pal.setColor( QPalette::WindowText, QColor( 230, 231, 232 ) );
+    pal.setColor( QPalette::Disabled, QPalette::WindowText, QColor( 127, 127, 127 ) );
+    pal.setColor( QPalette::ToolTipText, QColor( 230, 231, 232 ) );
+    pal.setColor( QPalette::ButtonText, QColor( 230, 231, 232 ) );
+    pal.setColor( QPalette::Disabled, QPalette::ButtonText, QColor( 127, 127, 127 ) );
+    pal.setColor( QPalette::BrightText, Qt::red );
+    pal.setColor( QPalette::Link, QColor( 20, 100, 170 ) );
+    pal.setColor( QPalette::Highlight, QColor( 20, 100, 170 ) );
+    pal.setColor( QPalette::Disabled, QPalette::Highlight, QColor( 80, 80, 80 ) );
+    pal.setColor( QPalette::HighlightedText, QColor( 230, 231, 232 ) );
+    pal.setColor( QPalette::Disabled, QPalette::HighlightedText, QColor( 127, 127, 127 ) );
+    QToolTip::setPalette( pal );
+    qApp->setPalette( pal );
+#ifdef Q_OS_WIN
+    setDarkBorderToWindow( (HWND)window()->winId(), true );
+#endif
+  }
+}

qt/sc_OptionsTab.hpp

@@ -85,6 +85,7 @@ class SC_OptionsTab : public QTabWidget
     QComboBox* deterministic_rng;
     QComboBox* center_scale_delta;
     QComboBox* challenge_mode;
+    QComboBox* theme_color;
     // scaling
     QComboBox* scale_over;
     QComboBox* plots_points;
@@ -105,6 +106,7 @@ public slots:
   void _resetallSettings();
   void _savefilelocation();
   void _armoryRegionChanged( const QString& );
+  void _themeColorChanged( const QString& );
 
 protected:
   SC_MainWindow* mainWindow;