Bug 1063224 - Add a bit more infrastructure to Axis. r=kats

--HG--
extra : source : 42dc115521166059d08e2cb1c7d23105bb54cbee

gfx/layers/apz/src/Axis.cpp

@@ -387,6 +387,11 @@ CSSCoord AxisX::GetRectOffset(const CSSRect& aRect) const
   return aRect.x;
 }
 
+ScreenPoint AxisX::MakePoint(ScreenCoord aCoord) const
+{
+  return ScreenPoint(aCoord, 0);
+}
+
 AxisY::AxisY(AsyncPanZoomController* aAsyncPanZoomController)
   : Axis(aAsyncPanZoomController)
 {
@@ -408,5 +413,10 @@ CSSCoord AxisY::GetRectOffset(const CSSRect& aRect) const
   return aRect.y;
 }
 
+ScreenPoint AxisY::MakePoint(ScreenCoord aCoord) const
+{
+  return ScreenPoint(0, aCoord);
+}
+
 }
 }

gfx/layers/apz/src/Axis.h

@@ -217,6 +217,8 @@ public:
   virtual CSSCoord GetRectLength(const CSSRect& aRect) const = 0;
   virtual CSSCoord GetRectOffset(const CSSRect& aRect) const = 0;
 
+  virtual ScreenPoint MakePoint(ScreenCoord aCoord) const = 0;
+
 protected:
   ScreenCoord mPos;
   uint32_t mPosTimeMs;
@@ -250,6 +252,7 @@ public:
   virtual CSSCoord GetPointOffset(const CSSPoint& aPoint) const;
   virtual CSSCoord GetRectLength(const CSSRect& aRect) const;
   virtual CSSCoord GetRectOffset(const CSSRect& aRect) const;
+  virtual ScreenPoint MakePoint(ScreenCoord aCoord) const;
 };
 
 class AxisY : public Axis {
@@ -258,6 +261,7 @@ public:
   virtual CSSCoord GetPointOffset(const CSSPoint& aPoint) const;
   virtual CSSCoord GetRectLength(const CSSRect& aRect) const;
   virtual CSSCoord GetRectOffset(const CSSRect& aRect) const;
+  virtual ScreenPoint MakePoint(ScreenCoord aCoord) const;
 };
 
 }