RDStyle is based on QCommonStyle

* This gives us a consistent baseline to start from and ensures that any
  things we don't customise and leave to defaults will still be the same
  wherever we are running.

qrenderdoc/Styles/RDStyle/RDStyle.cpp

@@ -58,7 +58,7 @@ static const int ComboMargin = 2;
 static const int ComboArrowDim = 12;
 };
 
-RDStyle::RDStyle(ColorScheme scheme) : RDTweakedNativeStyle()
+RDStyle::RDStyle(ColorScheme scheme) : RDTweakedNativeStyle(new QCommonStyle())
 {
   m_Scheme = scheme;
 }
@@ -456,16 +456,6 @@ int RDStyle::pixelMetric(PixelMetric metric, const QStyleOption *opt, const QWid
       return 1;
   }
 
-  // use the common style for these
-  if(metric == PM_LayoutLeftMargin || metric == PM_LayoutLeftMargin ||
-     metric == PM_LayoutTopMargin || metric == PM_LayoutRightMargin ||
-     metric == PM_LayoutBottomMargin || metric == PM_LayoutHorizontalSpacing ||
-     metric == PM_LayoutVerticalSpacing || metric == PM_DefaultTopLevelMargin ||
-     metric == PM_DefaultChildMargin || metric == PM_DefaultLayoutSpacing)
-  {
-    return QCommonStyle::pixelMetric(metric, opt, widget);
-  }
-
   if(metric == PM_ScrollBarExtent)
     return Constants::ScrollButtonDim + 2;
 
@@ -484,6 +474,9 @@ int RDStyle::styleHint(StyleHint stylehint, const QStyleOption *opt, const QWidg
   if(stylehint == QStyle::SH_ComboBox_Popup)
     return false;
 
+  if(stylehint == SH_ToolTipLabel_Opacity)
+    return 255;
+
   return RDTweakedNativeStyle::styleHint(stylehint, opt, widget, returnData);
 }
 
@@ -780,11 +773,6 @@ void RDStyle::drawPrimitive(PrimitiveElement element, const QStyleOption *opt, Q
     // don't draw focus rects
     return;
   }
-  else if(element == QStyle::PE_PanelItemViewRow || element == QStyle::PE_PanelItemViewItem)
-  {
-    // common style rendering is fine here
-    return QCommonStyle::drawPrimitive(element, opt, p, widget);
-  }
 
   RDTweakedNativeStyle::drawPrimitive(element, opt, p, widget);
 }
@@ -936,11 +924,6 @@ void RDStyle::drawControl(ControlElement control, const QStyleOption *opt, QPain
     // don't draw size grips
     return;
   }
-  else if(control == CE_ItemViewItem || control == CE_ComboBoxLabel)
-  {
-    // common style rendering is fine for these
-    return QCommonStyle::drawControl(control, opt, p, widget);
-  }
   else if(control == CE_ShapedFrame)
   {
     const QStyleOptionFrame *frame = qstyleoption_cast<const QStyleOptionFrame *>(opt);

qrenderdoc/Styles/RDTweakedNativeStyle/RDTweakedNativeStyle.cpp

@@ -28,7 +28,7 @@
 #include <QPen>
 #include <QStyleOption>
 
-RDTweakedNativeStyle::RDTweakedNativeStyle() : QProxyStyle()
+RDTweakedNativeStyle::RDTweakedNativeStyle(QStyle *parent) : QProxyStyle(parent)
 {
 }
 

qrenderdoc/Styles/RDTweakedNativeStyle/RDTweakedNativeStyle.h

@@ -32,7 +32,7 @@ class RDTweakedNativeStyle : public QProxyStyle
 private:
   Q_OBJECT
 public:
-  RDTweakedNativeStyle();
+  RDTweakedNativeStyle(QStyle *parent);
   ~RDTweakedNativeStyle();
 
   virtual QRect subElementRect(SubElement element, const QStyleOption *option,