1 files changed, 163 insertions, 0 deletions
diff --git a/layout/xul/nsImageBoxFrame.h b/layout/xul/nsImageBoxFrame.h
new file mode 100644
index 000000000..7faccccae
--- /dev/null
+++ b/layout/xul/nsImageBoxFrame.h
@@ -0,0 +1,163 @@
+/* -*- 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 nsImageBoxFrame_h___
+#define nsImageBoxFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "nsLeafBoxFrame.h"
+
+#include "imgILoader.h"
+#include "imgIRequest.h"
+#include "imgIContainer.h"
+#include "imgINotificationObserver.h"
+#include "imgIOnloadBlocker.h"
+
+class imgRequestProxy;
+class nsImageBoxFrame;
+
+class nsDisplayXULImage;
+
+class nsImageBoxListener final : public imgINotificationObserver,
+                                 public imgIOnloadBlocker
+{
+public:
+  nsImageBoxListener();
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_IMGINOTIFICATIONOBSERVER
+  NS_DECL_IMGIONLOADBLOCKER
+
+  void SetFrame(nsImageBoxFrame *frame) { mFrame = frame; }
+
+private:
+  virtual ~nsImageBoxListener();
+
+  nsImageBoxFrame *mFrame;
+};
+
+class nsImageBoxFrame final : public nsLeafBoxFrame
+{
+public:
+  typedef mozilla::image::DrawResult DrawResult;
+  typedef mozilla::layers::ImageContainer ImageContainer;
+  typedef mozilla::layers::LayerManager LayerManager;
+
+  friend class nsDisplayXULImage;
+  NS_DECL_FRAMEARENA_HELPERS
+
+  virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
+  virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override;
+  virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aBoxLayoutState) override;
+  virtual void MarkIntrinsicISizesDirty() override;
+
+  nsresult Notify(imgIRequest *aRequest, int32_t aType, const nsIntRect* aData);
+
+  friend nsIFrame* NS_NewImageBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+  virtual void Init(nsIContent*       aContent,
+                    nsContainerFrame* aParent,
+                    nsIFrame*         asPrevInFlow) override;
+
+  virtual nsresult AttributeChanged(int32_t aNameSpaceID,
+                                    nsIAtom* aAttribute,
+                                    int32_t aModType) override;
+
+  virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
+
+  virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
+
+  virtual nsIAtom* GetType() const override;
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+  /** 
+   * Update mUseSrcAttr from appropriate content attributes or from
+   * style, throw away the current image, and load the appropriate
+   * image.
+   * */
+  void UpdateImage();
+
+  /**
+   * Update mLoadFlags from content attributes. Does not attempt to reload the
+   * image using the new load flags.
+   */
+  void UpdateLoadFlags();
+
+  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                const nsRect&           aDirtyRect,
+                                const nsDisplayListSet& aLists) override;
+
+  virtual ~nsImageBoxFrame();
+
+  DrawResult PaintImage(nsRenderingContext& aRenderingContext,
+                        const nsRect& aDirtyRect,
+                        nsPoint aPt, uint32_t aFlags);
+
+  bool CanOptimizeToImageLayer();
+
+protected:
+  explicit nsImageBoxFrame(nsStyleContext* aContext);
+
+  virtual void GetImageSize();
+
+private:
+  nsresult OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage);
+  nsresult OnDecodeComplete(imgIRequest* aRequest);
+  nsresult OnLoadComplete(imgIRequest* aRequest, nsresult aStatus);
+  nsresult OnImageIsAnimated(imgIRequest* aRequest);
+  nsresult OnFrameUpdate(imgIRequest* aRequest);
+
+  nsRect mSubRect; ///< If set, indicates that only the portion of the image specified by the rect should be used.
+  nsSize mIntrinsicSize;
+  nsSize mImageSize;
+
+  RefPtr<imgRequestProxy> mImageRequest;
+  nsCOMPtr<imgINotificationObserver> mListener;
+
+  int32_t mLoadFlags;
+
+  // Boolean variable to determine if the current image request has been
+  // registered with the refresh driver.
+  bool mRequestRegistered;
+
+  bool mUseSrcAttr; ///< Whether or not the image src comes from an attribute.
+  bool mSuppressStyleCheck;
+}; // class nsImageBoxFrame
+
+class nsDisplayXULImage : public nsDisplayImageContainer {
+public:
+  nsDisplayXULImage(nsDisplayListBuilder* aBuilder,
+                    nsImageBoxFrame* aFrame) :
+    nsDisplayImageContainer(aBuilder, aFrame) {
+    MOZ_COUNT_CTOR(nsDisplayXULImage);
+  }
+#ifdef NS_BUILD_REFCNT_LOGGING
+  virtual ~nsDisplayXULImage() {
+    MOZ_COUNT_DTOR(nsDisplayXULImage);
+  }
+#endif
+
+  virtual bool CanOptimizeToImageLayer(LayerManager* aManager,
+                                       nsDisplayListBuilder* aBuilder) override;
+  virtual already_AddRefed<imgIContainer> GetImage() override;
+  virtual nsRect GetDestRect() override;
+  virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) override
+  {
+    *aSnap = true;
+    return nsRect(ToReferenceFrame(), Frame()->GetSize());
+  }
+  virtual nsDisplayItemGeometry* AllocateGeometry(nsDisplayListBuilder* aBuilder) override;
+  virtual void ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
+                                         const nsDisplayItemGeometry* aGeometry,
+                                         nsRegion* aInvalidRegion) override;
+  // Doesn't handle HitTest because nsLeafBoxFrame already creates an
+  // event receiver for us
+  virtual void Paint(nsDisplayListBuilder* aBuilder,
+                     nsRenderingContext* aCtx) override;
+  NS_DISPLAY_DECL_NAME("XULImage", TYPE_XUL_IMAGE)
+};
+
+#endif /* nsImageBoxFrame_h___ */