Changeset 102750 in vbox for trunk/src/VBox/Frontends

Timestamp:

Jan 3, 2024 4:10:44 PM (16 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

160927

Message:

FE/Qt: Extend UICommon with stuff to detect dark/light mode at GUI startup for platforms other than macOS or Windows; This time it's based purely on palette Window color luminance.

Location:

trunk/src/VBox/Frontends/VirtualBox/src/globals

Files:

• UICommon.cpp (modified) (3 diffs)
• UICommon.h (modified) (1 diff)

trunk/src/VBox/Frontends/VirtualBox/src/globals/UICommon.cpp

@@ -327 +327 @@
 #elif defined(VBOX_WS_WIN)
     m_fDarkMode = isWindowsInDarkMode();
-#endif
+#else /* Linux, BSD, Solaris */
+    m_fDarkMode = isPaletteInDarkMode();
+#endif /* Linux, BSD, Solaris */
     /* Load color theme: */
     loadColorTheme();
@@ -1011 +1013 @@
 }
 
-#ifdef VBOX_WS_WIN
+#if defined(VBOX_WS_MAC)
+// Provided by UICocoaApplication ..
+
+#elif defined(VBOX_WS_WIN)
+
 bool UICommon::isWindowsInDarkMode() const
 {
@@ -1029 +1035 @@
     return enmColorTheme == UIColorThemeType_Dark;
 }
-#endif /* VBOX_WS_WIN */
+
+#else /* Linux, BSD, Solaris */
+
+bool UICommon::isPaletteInDarkMode() const
+{
+    const QPalette pal = qApp->palette();
+    const QColor background = pal.color(QPalette::Active, QPalette::Window);
+    const double dLuminance = (0.299 * background.red() + 0.587 * background.green() + 0.114 * background.blue()) / 255;
+    return dLuminance < 0.5;
+}
+#endif /* Linux, BSD, Solaris */
 
 void UICommon::loadColorTheme()

trunk/src/VBox/Frontends/VirtualBox/src/globals/UICommon.h

@@ -233 +233 @@
         QString hostOperatingSystem() const;
 
-#ifdef VBOX_WS_WIN
+#if defined(VBOX_WS_MAC)
+        // Provided by UICocoaApplication ..
+#elif defined(VBOX_WS_WIN)
         /** Returns whether Windows host is in Dark mode. */
         bool isWindowsInDarkMode() const;
-#endif
+#else /* Linux, BSD, Solaris */
+        /** Returns whether palette is in Dark mode. */
+        bool isPaletteInDarkMode() const;
+#endif /* Linux, BSD, Solaris */
 
         /** Returns whether host OS is in Dark mode. */