GTK2 theme should use GTK configured font variant

This patch makes the GTK2 theme read the font configuration and use
that as the default system font.

Task-number: QTBUG-39643
Change-Id: Ieacf8968e54f34c6d44669350d349c9a96ed6cc5
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>

2 files changed, 10 insertions, 1 deletions

diff --git a/src/plugins/platformthemes/gtk2/qgtk2theme.cpp b/src/plugins/platformthemes/gtk2/qgtk2theme.cpp
index 812f4bc000..4df3a304e1 100644
--- a/src/plugins/platformthemes/gtk2/qgtk2theme.cpp
+++ b/src/plugins/platformthemes/gtk2/qgtk2theme.cpp
@@ -85,6 +85,14 @@ QVariant QGtk2Theme::themeHint(QPlatformTheme::ThemeHint hint) const
     }
 }
 
+QString QGtk2Theme::gtkFontName() const
+{
+    QString cfgFontName = gtkSetting("gtk-font-name");
+    if (!cfgFontName.isEmpty())
+        return cfgFontName;
+    return QGnomeTheme::gtkFontName();
+}
+
 bool QGtk2Theme::usePlatformNativeDialog(DialogType type) const
 {
     switch (type) {
diff --git a/src/plugins/platformthemes/gtk2/qgtk2theme.h b/src/plugins/platformthemes/gtk2/qgtk2theme.h
index a0bd34ed9f..c74e58e648 100644
--- a/src/plugins/platformthemes/gtk2/qgtk2theme.h
+++ b/src/plugins/platformthemes/gtk2/qgtk2theme.h
@@ -51,7 +51,8 @@ class QGtk2Theme : public QGnomeTheme
 public:
     QGtk2Theme();
 
-    QVariant themeHint(ThemeHint hint) const;
+    virtual QVariant themeHint(ThemeHint hint) const Q_DECL_OVERRIDE;
+    virtual QString gtkFontName() const Q_DECL_OVERRIDE;
 
     bool usePlatformNativeDialog(DialogType type) const;
     QPlatformDialogHelper *createPlatformDialogHelper(DialogType type) const;