Use 1pixel wide splitter if not using QGtkStyle

widgets/autohidingsplitter.cpp

@@ -23,6 +23,7 @@
  */
 
 #include "autohidingsplitter.h"
+#include "gtkstyle.h"
 #include <QSplitterHandle>
 #include <QTimer>
 #include <QChildEvent>
@@ -30,6 +31,11 @@
 #include <QComboBox>
 #include <QMenu>
 
+QSize AutohidingSplitterHandle::sizeHint() const
+{
+    return GtkStyle::isActive() ? QSize(0, 0) : QSize(1, 1);
+}
+
 class SplitterSizeAnimation:public QVariantAnimation
 {
 public:
@@ -73,7 +79,7 @@ AutohidingSplitter::AutohidingSplitter(Qt::Orientation orientation, QWidget *par
     autohideAnimation->setEasingCurve(QEasingCurve::Linear);
     //connect(this, SIGNAL(splitterMoved(int, int)), this, SLOT(updateAfterSplitterMoved(int, int)));
     setMinimumWidth(32);
-    setHandleWidth(0);
+    setHandleWidth(GtkStyle::isActive() ? 0 : 1);
 }
 
 AutohidingSplitter::AutohidingSplitter(QWidget *parent)

widgets/autohidingsplitter.h

@@ -45,6 +45,8 @@ public:
     AutohidingSplitterHandle(Qt::Orientation orientation, QSplitter *parent) : ThinSplitterHandle(orientation, parent) { }
     virtual ~AutohidingSplitterHandle() { }
 
+    QSize sizeHint() const;
+
 Q_SIGNALS:
     void hoverStarted();
     void hoverFinished();