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/* -*- 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___ */
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