1 files changed, 75 insertions, 0 deletions
diff --git a/image/DynamicImage.h b/image/DynamicImage.h
new file mode 100644
index 0000000000..751bed82a1
--- /dev/null
+++ b/image/DynamicImage.h
@@ -0,0 +1,75 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_image_DynamicImage_h
+#define mozilla_image_DynamicImage_h
+
+#include "mozilla/MemoryReporting.h"
+#include "gfxDrawable.h"
+#include "Image.h"
+
+namespace mozilla {
+namespace image {
+
+/**
+ * An Image that is dynamically created. The content of the image is provided by
+ * a gfxDrawable. It's anticipated that most uses of DynamicImage will be
+ * ephemeral.
+ */
+class DynamicImage : public Image
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_IMGICONTAINER
+
+  explicit DynamicImage(gfxDrawable* aDrawable)
+    : mDrawable(aDrawable)
+  {
+    MOZ_ASSERT(aDrawable, "Must have a gfxDrawable to wrap");
+  }
+
+  // Inherited methods from Image.
+  virtual already_AddRefed<ProgressTracker> GetProgressTracker() override;
+  virtual size_t SizeOfSourceWithComputedFallback(
+                                 MallocSizeOf aMallocSizeOf) const override;
+  virtual void CollectSizeOfSurfaces(nsTArray<SurfaceMemoryCounter>& aCounters,
+                                     MallocSizeOf aMallocSizeOf) const override;
+
+  virtual void IncrementAnimationConsumers() override;
+  virtual void DecrementAnimationConsumers() override;
+#ifdef DEBUG
+  virtual uint32_t GetAnimationConsumers() override;
+#endif
+
+  virtual nsresult OnImageDataAvailable(nsIRequest* aRequest,
+                                        nsISupports* aContext,
+                                        nsIInputStream* aInStr,
+                                        uint64_t aSourceOffset,
+                                        uint32_t aCount) override;
+  virtual nsresult OnImageDataComplete(nsIRequest* aRequest,
+                                       nsISupports* aContext,
+                                       nsresult aStatus,
+                                       bool aLastPart) override;
+
+  virtual void OnSurfaceDiscarded() override;
+
+  virtual void SetInnerWindowID(uint64_t aInnerWindowId) override;
+  virtual uint64_t InnerWindowID() const override;
+
+  virtual bool HasError() override;
+  virtual void SetHasError() override;
+
+  virtual ImageURL* GetURI() override;
+
+private:
+  virtual ~DynamicImage() { }
+
+  RefPtr<gfxDrawable> mDrawable;
+};
+
+} // namespace image
+} // namespace mozilla
+
+#endif // mozilla_image_DynamicImage_h