Add code to check for current palette being a dark theme

Signed-off-by: Matthew J. Milner <[email protected]>
OpenChemistry · Jan 18, 2024 · ce8eb4c · ce8eb4c
1 parent 350d18d
commit ce8eb4c
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Showing 2 changed files with 14 additions and 0 deletions.
diff --git a/avogadro/qtgui/toolplugin.cpp b/avogadro/qtgui/toolplugin.cpp
@@ -4,6 +4,7 @@
 ******************************************************************************/
 
 #include "toolplugin.h"
+#include <QtGui/QPalette>
 
 namespace Avogadro::QtGui {
 
@@ -58,4 +59,14 @@ bool ToolPlugin::handleCommand(const QString& command,
 
 ToolPluginFactory::~ToolPluginFactory() {}
 
+// Method suggested by Qt to determine if theme is dark pre Qt6.5
+static bool shouldApplyDarkFrame()
+{
+  const QPalette defaultPalette;
+    return defaultPalette.color(QPalette::WindowText).lightness()
+      > defaultPalette.color(QPalette::Window).lightness();
+}
+
+bool ToolPlugin::darkTheme = shouldApplyDarkFrame();
+
 } // namespace Avogadro::QtGui
diff --git a/avogadro/qtgui/toolplugin.h b/avogadro/qtgui/toolplugin.h
@@ -40,6 +40,9 @@ class AVOGADROQTGUI_EXPORT ToolPlugin : public QObject
 {
   Q_OBJECT
 
+private:
+  static bool darkTheme;
+
 public:
   explicit ToolPlugin(QObject* parent = nullptr);
   ~ToolPlugin() override;