[LyX/master] #12451 Adjust color cache on change of dark/light mode

[Stephan Witt]

commit d9b9307d14ea5cdf6e6e17d2ccba15048407a3cb
Author: Stephan Witt <switt at lyx.org>
Date:   Wed Jan 5 08:26:18 2022 +0100

    #12451 Adjust color cache on change of dark/light mode
---
 src/frontends/qt/GuiApplication.cpp |   11 +++++++++++
 src/frontends/qt/GuiApplication.h   |    2 ++
 2 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/src/frontends/qt/GuiApplication.cpp b/src/frontends/qt/GuiApplication.cpp
index 5cd8f29..b44f2c5 100644
--- a/src/frontends/qt/GuiApplication.cpp
+++ b/src/frontends/qt/GuiApplication.cpp
@@ -2322,6 +2322,12 @@ void GuiApplication::onLocaleChanged()
 }
 
 
+void GuiApplication::onPaletteChanged()
+{
+	colorCache().setPalette(palette());
+}
+
+
 void GuiApplication::handleKeyFunc(FuncCode action)
 {
 	char_type c = 0;
@@ -2977,6 +2983,11 @@ bool GuiApplication::event(QEvent * e)
 		e->accept();
 		return true;
 #endif
+	case QEvent::ApplicationPaletteChange: {
+		// runtime switch from/to dark mode
+		onPaletteChanged();
+		return QApplication::event(e);
+	}
 	default:
 		return QApplication::event(e);
 	}
diff --git a/src/frontends/qt/GuiApplication.h b/src/frontends/qt/GuiApplication.h
index f0c3e1e..e40815e 100644
--- a/src/frontends/qt/GuiApplication.h
+++ b/src/frontends/qt/GuiApplication.h
@@ -230,6 +230,8 @@ private Q_SLOTS:
 	///
 	void onLocaleChanged();
 	///
+	void onPaletteChanged();
+	///
 	void slotProcessFuncRequestQueue() { processFuncRequestQueue(); }
 	///
 #if (QT_VERSION >= 0x050100)