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Diffstat (limited to 'layout/xul/nsImageBoxFrame.h')
| -rw-r--r-- | layout/xul/nsImageBoxFrame.h | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/layout/xul/nsImageBoxFrame.h b/layout/xul/nsImageBoxFrame.h new file mode 100644 index 0000000000..3e7a15dd3b --- /dev/null +++ b/layout/xul/nsImageBoxFrame.h @@ -0,0 +1,192 @@ +/* -*- 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 http://mozilla.org/MPL/2.0/. */ +#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; + +class nsDisplayXULImage; + +namespace mozilla { +class PresShell; +} // namespace mozilla + +class nsImageBoxListener final : public imgINotificationObserver { + public: + explicit nsImageBoxListener(nsImageBoxFrame* frame); + + NS_DECL_ISUPPORTS + NS_DECL_IMGINOTIFICATIONOBSERVER + + void ClearFrame() { mFrame = nullptr; } + + private: + virtual ~nsImageBoxListener(); + + nsImageBoxFrame* mFrame; +}; + +class nsImageBoxFrame final : public nsLeafBoxFrame { + public: + typedef mozilla::image::ImgDrawResult ImgDrawResult; + typedef mozilla::layers::ImageContainer ImageContainer; + typedef mozilla::layers::LayerManager LayerManager; + + friend class nsDisplayXULImage; + NS_DECL_FRAMEARENA_HELPERS(nsImageBoxFrame) + NS_DECL_QUERYFRAME + + 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; + +#ifdef DEBUG_FRAME_DUMP + virtual nsresult GetFrameName(nsAString& aResult) const override; +#endif + + /** + * Gets the image request to be loaded from the current style. + * + * May be null if themed. + */ + imgRequestProxy* GetRequestFromStyle(); + + /** + * 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); + + protected: + explicit nsImageBoxFrame(ComputedStyle* aStyle, nsPresContext* aPresContext); + + virtual void GetImageSize(); + + private: + 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 + +class nsDisplayXULImage final : public nsDisplayImageContainer { + public: + nsDisplayXULImage(nsDisplayListBuilder* aBuilder, nsImageBoxFrame* aFrame) + : nsDisplayImageContainer(aBuilder, aFrame) { + MOZ_COUNT_CTOR(nsDisplayXULImage); + } + MOZ_COUNTED_DTOR_OVERRIDE(nsDisplayXULImage) + + virtual bool CanOptimizeToImageLayer(LayerManager* aManager, + nsDisplayListBuilder* aBuilder) override; + virtual already_AddRefed<imgIContainer> GetImage() override; + virtual nsRect GetDestRect() const override; + virtual void UpdateDrawResult( + mozilla::image::ImgDrawResult aResult) override { + nsDisplayItemGenericImageGeometry::UpdateDrawResult(this, aResult); + } + virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, + bool* aSnap) const override { + *aSnap = true; + return nsRect(ToReferenceFrame(), Frame()->GetSize()); + } + virtual nsDisplayItemGeometry* AllocateGeometry( + nsDisplayListBuilder* aBuilder) override; + virtual void ComputeInvalidationRegion( + nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry, + nsRegion* aInvalidRegion) const override; + // 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; + + NS_DISPLAY_DECL_NAME("XULImage", TYPE_XUL_IMAGE) +}; + +#endif /* nsImageBoxFrame_h___ */ |