30 lines
1.1 KiB
Diff
30 lines
1.1 KiB
Diff
diff --git a/widget/gtk/nsWindow.cpp b/widget/gtk/nsWindow.cpp
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--- a/widget/gtk/nsWindow.cpp
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+++ b/widget/gtk/nsWindow.cpp
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@@ -6577,11 +6577,22 @@
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}
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gint nsWindow::GdkScaleFactor() {
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+ // For popup windows with parent window we need to get scale factor of the
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+ // parent window. Otherwise the scale factor of the popup is not updated
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+ // during it's hidden.
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+ GdkWindow* scaledGdkWindow = mGdkWindow;
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+ if (mToplevelParentWindow) {
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+ scaledGdkWindow = gtk_widget_get_window(GTK_WIDGET(mToplevelParentWindow));
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+ // Fallback for windows which parent has been unrealized.
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+ if (!scaledGdkWindow) {
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+ scaledGdkWindow = mGdkWindow;
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+ }
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+ }
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// Available as of GTK 3.10+
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static auto sGdkWindowGetScaleFactorPtr =
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(gint(*)(GdkWindow*))dlsym(RTLD_DEFAULT, "gdk_window_get_scale_factor");
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- if (sGdkWindowGetScaleFactorPtr && mGdkWindow)
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- return (*sGdkWindowGetScaleFactorPtr)(mGdkWindow);
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+ if (sGdkWindowGetScaleFactorPtr && scaledGdkWindow)
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+ return (*sGdkWindowGetScaleFactorPtr)(scaledGdkWindow);
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return ScreenHelperGTK::GetGTKMonitorScaleFactor();
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}
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