Bug 539356 - Handled scrolled inactive layers trees correctly. r=roc

2012-09-17 10:57:22 +12:00
parent f54d0a0265
commit c2045c9636
3 changed files with 13 additions and 0 deletions
--- a/gfx/layers/LayerTreeInvalidation.cpp
+++ b/gfx/layers/LayerTreeInvalidation.cpp
@@ -91,6 +91,8 @@ struct LayerPropertiesBase : public LayerProperties
  virtual nsIntRect ComputeDifferences(Layer* aRoot, 
                                       NotifySubDocInvalidationFunc aCallback);

+  virtual void MoveBy(const nsIntPoint& aOffset);
+
  nsIntRect ComputeChange(NotifySubDocInvalidationFunc aCallback)
  {
    bool transformChanged = mTransform != mLayer->GetTransform();
@@ -328,6 +330,12 @@ LayerPropertiesBase::ComputeDifferences(Layer* aRoot, NotifySubDocInvalidationFu
    return ComputeChange(aCallback);
  }
 }
+  
+void 
+LayerPropertiesBase::MoveBy(const nsIntPoint& aOffset)
+{
+  mTransform.TranslatePost(gfxPoint3D(aOffset.x, aOffset.y, 0)); 
+}

 } // namespace layers
 } // namespace mozilla