Add dark mode for Windows 10

Author: uglide

src/app/app.cpp

@@ -13,6 +13,11 @@
 #include <QtQml>
 #include <QSslSocket>
 
+#if defined(Q_OS_WINDOWS)
+#include "win_darkmode.h"
+#include <QStyleFactory>
+#endif
+
 #include "common/tabviewmodel.h"
 #include "events.h"
 #include "models/configmanager.h"
@@ -43,6 +48,14 @@ Application::Application(int& argc, char** argv)
   initProxySettings();
   processCmdArgs();
   initAppFonts();
+
+#if defined(Q_OS_WINDOWS)
+  if (isWindowsDarkThemeEnabled()) {
+    setStyle(QStyleFactory::create("Fusion"));
+    setPalette(createDarkModePalette());
+  }
+#endif
+
   initRedisClient();
 #ifndef RDM_APPSTORE
   initUpdater();

src/app/win_darkmode.h

@@ -0,0 +1,47 @@
+#pragma once
+#include <QPalette>
+#include <QSettings>
+
+bool isWindowsDarkThemeEnabled() {
+  QSettings settings(
+      "HKEY_CURRENT_"
+      "USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
+      QSettings::NativeFormat);
+
+  return settings.value("AppsUseLightTheme") == 0;
+}
+
+QPalette createDarkModePalette() {
+
+  QColor base = QColor(30, 30, 30);
+  QColor alt = QColor(50, 50, 50);
+  QColor text = QColor(223, 223, 223);
+  QColor disabledColor = QColor(127, 127, 127);
+
+  QPalette p(alt, base);
+
+  p.setColor(QPalette::Light, QColor(76,76,76));
+  p.setColor(QPalette::Midlight, QColor(76,76,76));
+  p.setColor(QPalette::Mid, QColor(66,66,66));
+  p.setColor(QPalette::Window, base);
+  p.setColor(QPalette::WindowText, text);
+  p.setColor(QPalette::Base, base);
+  p.setColor(QPalette::AlternateBase, alt);
+  p.setColor(QPalette::ToolTipBase, alt);
+  p.setColor(QPalette::ToolTipText, Qt::white);
+  p.setColor(QPalette::Text, text);
+  p.setColor(QPalette::Disabled, QPalette::Text, disabledColor);
+  p.setColor(QPalette::Button, alt);
+  p.setColor(QPalette::ButtonText, text);
+  p.setColor(QPalette::Disabled, QPalette::ButtonText, disabledColor);
+  p.setColor(QPalette::BrightText, text.lighter(80));
+  p.setColor(QPalette::Link, QColor(42, 130, 218));
+  p.setColor(QPalette::Highlight, QColor(42, 130, 218));
+  p.setColor(QPalette::HighlightedText, Qt::black);
+  p.setColor(QPalette::Disabled, QPalette::HighlightedText, disabledColor);
+
+  p.setBrush(QPalette::Active, QPalette::Highlight,  QColor(42, 130, 218));
+  p.setBrush(QPalette::Inactive, QPalette::Highlight, QColor(42, 130, 218));
+
+  return p;
+}

src/rdm.pro

@@ -48,6 +48,7 @@ HEADERS  += \
     $$PWD/app/apputils.h \
     $$PWD/app/qmlutils.h \
     $$PWD/app/qcompress.h \
+    $$PWD/app/win_darkmode.h \
     $$files($$PWD/app/models/*.h) \
     $$files($$PWD/app/models/key-models/*.h) \
     $$files($$PWD/modules/connections-tree/*.h) \