1 files changed, 36 insertions, 2 deletions
diff --git a/Source/WebKit/android/nav/DrawExtra.h b/Source/WebKit/android/nav/DrawExtra.h
index 6716a65..cc94476 100644
--- a/Source/WebKit/android/nav/DrawExtra.h
+++ b/Source/WebKit/android/nav/DrawExtra.h
@@ -26,11 +26,25 @@
 #ifndef DrawExtra_h
 #define DrawExtra_h
 
+#include "config.h"
+
+#include "Color.h"
+#include "IntPoint.h"
+#include "IntRect.h"
+#include "wtf/HashMap.h"
+#include "wtf/Vector.h"
+
+// Color of the ring copied from framework's holo_light
+#define COLOR_HOLO_LIGHT 0x6633B5E5
+// Color of the ring copied from framework's holo_dark
+#define COLOR_HOLO_DARK 0x660099CC
+
 class SkCanvas;
+class SkRegion;
 
 namespace WebCore {
-    class IntRect;
     class LayerAndroid;
+    class GLExtras;
 }
 
 using namespace WebCore;
@@ -40,7 +54,27 @@ namespace android {
 class DrawExtra {
 public:
     virtual ~DrawExtra() {}
-    virtual void draw(SkCanvas* , LayerAndroid* , IntRect* ) = 0;
+    virtual void draw(SkCanvas*, LayerAndroid*) {}
+    virtual void drawGL(GLExtras*, const LayerAndroid*) {}
+};
+
+// A helper extra that has a SkRegion per LayerAndroid
+class RegionLayerDrawExtra : public DrawExtra {
+public:
+    RegionLayerDrawExtra();
+    virtual ~RegionLayerDrawExtra();
+
+    void addHighlightRegion(const LayerAndroid* layer, const Vector<IntRect>& rects,
+                            const IntPoint& additionalOffset = IntPoint());
+    virtual void draw(SkCanvas*, LayerAndroid*);
+    virtual void drawGL(GLExtras*, const LayerAndroid*);
+
+private:
+    SkRegion* getHighlightRegionsForLayer(const LayerAndroid* layer);
+
+    typedef HashMap<int, SkRegion* > HighlightRegionMap;
+    HighlightRegionMap m_highlightRegions;
+    Color m_highlightColor;
 };
 
 }