163 lines
5.3 KiB
C++
163 lines
5.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsImageBoxFrame_h___
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#define nsImageBoxFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsLeafBoxFrame.h"
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#include "imgILoader.h"
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#include "imgIRequest.h"
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#include "imgIContainer.h"
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#include "imgINotificationObserver.h"
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#include "imgIOnloadBlocker.h"
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class imgRequestProxy;
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class nsImageBoxFrame;
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class nsDisplayXULImage;
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class nsImageBoxListener final : public imgINotificationObserver,
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public imgIOnloadBlocker
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{
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public:
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nsImageBoxListener();
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NS_DECL_ISUPPORTS
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NS_DECL_IMGINOTIFICATIONOBSERVER
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NS_DECL_IMGIONLOADBLOCKER
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void SetFrame(nsImageBoxFrame *frame) { mFrame = frame; }
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private:
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virtual ~nsImageBoxListener();
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nsImageBoxFrame *mFrame;
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};
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class nsImageBoxFrame final : public nsLeafBoxFrame
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{
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public:
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typedef mozilla::image::DrawResult DrawResult;
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typedef mozilla::layers::ImageContainer ImageContainer;
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typedef mozilla::layers::LayerManager LayerManager;
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friend class nsDisplayXULImage;
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NS_DECL_FRAMEARENA_HELPERS
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virtual nsSize GetXULPrefSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nsSize GetXULMinSize(nsBoxLayoutState& aBoxLayoutState) override;
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virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aBoxLayoutState) override;
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virtual void MarkIntrinsicISizesDirty() override;
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nsresult Notify(imgIRequest *aRequest, int32_t aType, const nsIntRect* aData);
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friend nsIFrame* NS_NewImageBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* asPrevInFlow) override;
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virtual nsresult AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType) override;
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virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
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virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
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virtual nsIAtom* GetType() const override;
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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/**
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* Update mUseSrcAttr from appropriate content attributes or from
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* style, throw away the current image, and load the appropriate
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* image.
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* */
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void UpdateImage();
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/**
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* Update mLoadFlags from content attributes. Does not attempt to reload the
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* image using the new load flags.
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*/
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void UpdateLoadFlags();
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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virtual ~nsImageBoxFrame();
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DrawResult PaintImage(nsRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsPoint aPt, uint32_t aFlags);
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bool CanOptimizeToImageLayer();
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protected:
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explicit nsImageBoxFrame(nsStyleContext* aContext);
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virtual void GetImageSize();
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private:
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nsresult OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage);
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nsresult OnDecodeComplete(imgIRequest* aRequest);
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nsresult OnLoadComplete(imgIRequest* aRequest, nsresult aStatus);
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nsresult OnImageIsAnimated(imgIRequest* aRequest);
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nsresult OnFrameUpdate(imgIRequest* aRequest);
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nsRect mSubRect; ///< If set, indicates that only the portion of the image specified by the rect should be used.
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nsSize mIntrinsicSize;
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nsSize mImageSize;
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RefPtr<imgRequestProxy> mImageRequest;
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nsCOMPtr<imgINotificationObserver> mListener;
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int32_t mLoadFlags;
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// Boolean variable to determine if the current image request has been
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// registered with the refresh driver.
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bool mRequestRegistered;
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bool mUseSrcAttr; ///< Whether or not the image src comes from an attribute.
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bool mSuppressStyleCheck;
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}; // class nsImageBoxFrame
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class nsDisplayXULImage : public nsDisplayImageContainer {
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public:
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nsDisplayXULImage(nsDisplayListBuilder* aBuilder,
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nsImageBoxFrame* aFrame) :
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nsDisplayImageContainer(aBuilder, aFrame) {
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MOZ_COUNT_CTOR(nsDisplayXULImage);
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}
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#ifdef NS_BUILD_REFCNT_LOGGING
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virtual ~nsDisplayXULImage() {
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MOZ_COUNT_DTOR(nsDisplayXULImage);
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}
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#endif
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virtual bool CanOptimizeToImageLayer(LayerManager* aManager,
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nsDisplayListBuilder* aBuilder) override;
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virtual already_AddRefed<imgIContainer> GetImage() override;
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virtual nsRect GetDestRect() override;
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virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) override
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{
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*aSnap = true;
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return nsRect(ToReferenceFrame(), Frame()->GetSize());
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}
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virtual nsDisplayItemGeometry* AllocateGeometry(nsDisplayListBuilder* aBuilder) override;
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virtual void ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
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const nsDisplayItemGeometry* aGeometry,
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nsRegion* aInvalidRegion) override;
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// Doesn't handle HitTest because nsLeafBoxFrame already creates an
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// event receiver for us
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virtual void Paint(nsDisplayListBuilder* aBuilder,
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nsRenderingContext* aCtx) override;
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NS_DISPLAY_DECL_NAME("XULImage", TYPE_XUL_IMAGE)
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};
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#endif /* nsImageBoxFrame_h___ */
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