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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 */
#ifndef nsImageBoxFrame_h___
#define nsImageBoxFrame_h___
#include "mozilla/Attributes.h"
#include "nsLeafBoxFrame.h"
#include "imgIRequest.h"
#include "imgIContainer.h"
#include "imgINotificationObserver.h"
class imgRequestProxy;
class nsImageBoxFrame;
namespace mozilla {
class nsDisplayXULImage;
class PresShell;
} // namespace mozilla
class nsImageBoxListener final : public imgINotificationObserver {
explicit nsImageBoxListener(nsImageBoxFrame* frame);
void ClearFrame() { mFrame = nullptr; }
virtual ~nsImageBoxListener();
nsImageBoxFrame* mFrame;
class nsImageBoxFrame final : public nsLeafBoxFrame {
typedef mozilla::image::ImgDrawResult ImgDrawResult;
typedef mozilla::layers::ImageContainer ImageContainer;
typedef mozilla::layers::LayerManager LayerManager;
friend class mozilla::nsDisplayXULImage;
virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override;
virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aBoxLayoutState) override;
virtual void MarkIntrinsicISizesDirty() override;
void Notify(imgIRequest* aRequest, int32_t aType, const nsIntRect* aData);
friend nsIFrame* NS_NewImageBoxFrame(mozilla::PresShell* aPresShell,
ComputedStyle* aStyle);
virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* asPrevInFlow) override;
virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
int32_t aModType) override;
virtual void DidSetComputedStyle(ComputedStyle* aOldStyle) override;
virtual void DestroyFrom(nsIFrame* aDestructRoot,
PostDestroyData& aPostDestroyData) override;
virtual nsresult GetFrameName(nsAString& aResult) const override;
* Gets the image to be loaded from the current style. May be null if themed,
* or if not an url image.
* TODO(emilio): Maybe support list-style-image: linear-gradient() etc?
const mozilla::StyleImage* GetImageFromStyle(const ComputedStyle&) const;
const mozilla::StyleImage* GetImageFromStyle() const {
return GetImageFromStyle(*Style());
mozilla::ImageResolution GetImageResolution() const;
* 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();
void RestartAnimation();
void StopAnimation();
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
virtual ~nsImageBoxFrame();
already_AddRefed<imgIContainer> GetImageContainerForPainting(
const nsPoint& aPt, ImgDrawResult& aDrawResult,
Maybe<nsPoint>& aAnchorPoint, nsRect& aDest);
ImgDrawResult PaintImage(gfxContext& aRenderingContext,
const nsRect& aDirtyRect, nsPoint aPt,
uint32_t aFlags);
ImgDrawResult CreateWebRenderCommands(
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResources,
const mozilla::layers::StackingContextHelper& aSc,
mozilla::layers::RenderRootStateManager* aManager, nsDisplayItem* aItem,
nsPoint aPt, uint32_t aFlags);
bool CanOptimizeToImageLayer();
nsRect GetDestRect(const nsPoint& aOffset, Maybe<nsPoint>& aAnchorPoint);
explicit nsImageBoxFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
virtual void GetImageSize();
void OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage);
void OnDecodeComplete(imgIRequest* aRequest);
void OnLoadComplete(imgIRequest* aRequest, nsresult aStatus);
void OnImageIsAnimated(imgIRequest* aRequest);
void 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
namespace mozilla {
class nsDisplayXULImage final : public nsPaintedDisplayItem {
nsDisplayXULImage(nsDisplayListBuilder* aBuilder, nsImageBoxFrame* aFrame)
: nsPaintedDisplayItem(aBuilder, aFrame) {
virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder,
bool* aSnap) const override {
*aSnap = true;
return nsRect(ToReferenceFrame(), Frame()->GetSize());
// Doesn't handle HitTest because nsLeafBoxFrame already creates an
// event receiver for us
virtual void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override;
virtual bool CreateWebRenderCommands(
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResources,
const StackingContextHelper& aSc,
mozilla::layers::RenderRootStateManager* aManager,
nsDisplayListBuilder* aDisplayListBuilder) override;
} // namespace mozilla
#endif /* nsImageBoxFrame_h___ */