Bug 1317552. Send unlocked draw notifications for images async when asked to. r=aosmond

image/Image.cpp

@@ -146,5 +146,25 @@ ImageResource::EvaluateAnimation()
   }
 }
 
+void
+ImageResource::SendOnUnlockedDraw(uint32_t aFlags)
+{
+  if (!mProgressTracker) {
+    return;
+  }
+
+  if (!(aFlags & FLAG_ASYNC_NOTIFY)) {
+    mProgressTracker->OnUnlockedDraw();
+  } else {
+    NotNull<RefPtr<ImageResource>> image = WrapNotNull(this);
+    NS_DispatchToMainThread(NS_NewRunnableFunction([=]() -> void {
+      RefPtr<ProgressTracker> tracker = image->GetProgressTracker();
+      if (tracker) {
+        tracker->OnUnlockedDraw();
+      }
+    }));
+  }
+}
+
 } // namespace image
 } // namespace mozilla

image/Image.h

@@ -305,6 +305,8 @@ protected:
   virtual nsresult StartAnimation() = 0;
   virtual nsresult StopAnimation() = 0;
 
+  void SendOnUnlockedDraw(uint32_t aFlags);
+
   // Member data shared by all implementations of this abstract class
   RefPtr<ProgressTracker>     mProgressTracker;
   RefPtr<ImageURL>            mURI;

image/RasterImage.cpp

@@ -587,8 +587,8 @@ RasterImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags)
     return nullptr;
   }
 
-  if (IsUnlocked() && mProgressTracker) {
-    mProgressTracker->OnUnlockedDraw();
+  if (IsUnlocked()) {
+    SendOnUnlockedDraw(aFlags);
   }
 
   RefPtr<layers::ImageContainer> container = mImageContainer.get();
@@ -1343,10 +1343,11 @@ RasterImage::Draw(gfxContext* aContext,
     return DrawResult::BAD_ARGS;
   }
 
-  if (IsUnlocked() && mProgressTracker) {
-    mProgressTracker->OnUnlockedDraw();
+  if (IsUnlocked()) {
+    SendOnUnlockedDraw(aFlags);
   }
 
+
   // If we're not using SamplingFilter::GOOD, we shouldn't high-quality scale or
   // downscale during decode.
   uint32_t flags = aSamplingFilter == SamplingFilter::GOOD

image/VectorImage.cpp

@@ -835,8 +835,8 @@ VectorImage::Draw(gfxContext* aContext,
     return DrawResult::TEMPORARY_ERROR;
   }
 
-  if (mAnimationConsumers == 0 && mProgressTracker) {
-    mProgressTracker->OnUnlockedDraw();
+  if (mAnimationConsumers == 0) {
+    SendOnUnlockedDraw(aFlags);
   }
 
   AutoRestore<bool> autoRestoreIsDrawing(mIsDrawing);