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Diffstat (limited to 'layout/svg/SVGImageFrame.h')
| -rw-r--r-- | layout/svg/SVGImageFrame.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/layout/svg/SVGImageFrame.h b/layout/svg/SVGImageFrame.h new file mode 100644 index 0000000000..24be0ce78f --- /dev/null +++ b/layout/svg/SVGImageFrame.h @@ -0,0 +1,180 @@ +/* -*- 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 LAYOUT_SVG_SVGIMAGEFRAME_H_ +#define LAYOUT_SVG_SVGIMAGEFRAME_H_ + +// Keep in (case-insensitive) order: +#include "mozilla/gfx/2D.h" +#include "mozilla/DisplaySVGItem.h" +#include "mozilla/ISVGDisplayableFrame.h" +#include "gfxContext.h" +#include "gfxPlatform.h" +#include "imgIContainer.h" +#include "nsContainerFrame.h" +#include "imgINotificationObserver.h" +#include "nsIReflowCallback.h" + +namespace mozilla { +class DisplaySVGImage; +class PresShell; +} // namespace mozilla + +nsIFrame* NS_NewSVGImageFrame(mozilla::PresShell* aPresShell, + mozilla::ComputedStyle* aStyle); + +namespace mozilla { + +class SVGImageFrame final : public nsIFrame, + public ISVGDisplayableFrame, + public nsIReflowCallback { + friend nsIFrame* ::NS_NewSVGImageFrame(mozilla::PresShell* aPresShell, + ComputedStyle* aStyle); + + friend class DisplaySVGImage; + + bool CreateWebRenderCommands(wr::DisplayListBuilder& aBuilder, + wr::IpcResourceUpdateQueue& aResources, + const layers::StackingContextHelper& aSc, + layers::RenderRootStateManager* aManager, + nsDisplayListBuilder* aDisplayListBuilder, + DisplaySVGImage* aItem, bool aDryRun); + + private: + explicit SVGImageFrame(ComputedStyle* aStyle, nsPresContext* aPresContext) + : nsIFrame(aStyle, aPresContext, kClassID), + mReflowCallbackPosted(false), + mForceSyncDecoding(false) { + AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_MAY_BE_TRANSFORMED); + EnableVisibilityTracking(); + } + + virtual ~SVGImageFrame(); + + public: + NS_DECL_QUERYFRAME + NS_DECL_FRAMEARENA_HELPERS(SVGImageFrame) + + // ISVGDisplayableFrame interface: + void PaintSVG(gfxContext& aContext, const gfxMatrix& aTransform, + imgDrawingParams& aImgParams) override; + nsIFrame* GetFrameForPoint(const gfxPoint& aPoint) override; + void ReflowSVG() override; + void NotifySVGChanged(uint32_t aFlags) override; + SVGBBox GetBBoxContribution(const Matrix& aToBBoxUserspace, + uint32_t aFlags) override; + bool IsDisplayContainer() override { return false; } + + // nsIFrame interface: + void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override; + + nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute, + int32_t aModType) override; + + void OnVisibilityChange( + Visibility aNewVisibility, + const Maybe<OnNonvisible>& aNonvisibleAction = Nothing()) override; + + void Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) override; + void Destroy(DestroyContext&) override; + + void DidSetComputedStyle(ComputedStyle* aOldStyle) final; + + bool IsSVGTransformed(Matrix* aOwnTransforms = nullptr, + Matrix* aFromParentTransforms = nullptr) const override; + + bool GetIntrinsicImageDimensions(gfx::Size& aSize, + AspectRatio& aAspectRatio) const; + +#ifdef DEBUG_FRAME_DUMP + nsresult GetFrameName(nsAString& aResult) const override { + return MakeFrameName(u"SVGImage"_ns, aResult); + } +#endif + + // nsIReflowCallback + bool ReflowFinished() override; + void ReflowCallbackCanceled() override; + + /// Always sync decode our image when painting if @aForce is true. + void SetForceSyncDecoding(bool aForce) { mForceSyncDecoding = aForce; } + + // SVGImageFrame methods: + bool IsInvisible() const; + + private: + bool IgnoreHitTest() const; + + already_AddRefed<imgIRequest> GetCurrentRequest() const; + + gfx::Matrix GetRasterImageTransform(int32_t aNativeWidth, + int32_t aNativeHeight); + gfx::Matrix GetVectorImageTransform(); + bool TransformContextForPainting(gfxContext* aGfxContext, + const gfxMatrix& aTransform); + + nsCOMPtr<imgINotificationObserver> mListener; + + nsCOMPtr<imgIContainer> mImageContainer; + + bool mReflowCallbackPosted; + bool mForceSyncDecoding; + + friend class SVGImageListener; +}; + +//---------------------------------------------------------------------- +// Display list item: + +class DisplaySVGImage final : public DisplaySVGItem { + public: + DisplaySVGImage(nsDisplayListBuilder* aBuilder, SVGImageFrame* aFrame) + : DisplaySVGItem(aBuilder, aFrame) { + MOZ_COUNT_CTOR(DisplaySVGImage); + } + + MOZ_COUNTED_DTOR_OVERRIDE(DisplaySVGImage) + + NS_DISPLAY_DECL_NAME("DisplaySVGImage", TYPE_SVG_IMAGE) + + // Whether this part of the SVG should be natively handled by webrender, + // potentially becoming an "active layer" inside a blob image. + bool ShouldBeActive(mozilla::wr::DisplayListBuilder& aBuilder, + mozilla::wr::IpcResourceUpdateQueue& aResources, + const mozilla::layers::StackingContextHelper& aSc, + mozilla::layers::RenderRootStateManager* aManager, + nsDisplayListBuilder* aDisplayListBuilder) { + auto* frame = static_cast<SVGImageFrame*>(mFrame); + return frame->CreateWebRenderCommands(aBuilder, aResources, aSc, aManager, + aDisplayListBuilder, this, + /*aDryRun=*/true); + } + + bool CreateWebRenderCommands( + mozilla::wr::DisplayListBuilder& aBuilder, + mozilla::wr::IpcResourceUpdateQueue& aResources, + const mozilla::layers::StackingContextHelper& aSc, + mozilla::layers::RenderRootStateManager* aManager, + nsDisplayListBuilder* aDisplayListBuilder) override { + auto* frame = static_cast<SVGImageFrame*>(mFrame); + bool result = frame->CreateWebRenderCommands(aBuilder, aResources, aSc, + aManager, aDisplayListBuilder, + this, /*aDryRun=*/false); + MOZ_ASSERT(result, "ShouldBeActive inconsistent with CreateWRCommands?"); + return result; + } + + bool IsInvisible() const override { + auto* frame = static_cast<SVGImageFrame*>(mFrame); + return frame->IsInvisible(); + } +}; + +} // namespace mozilla + +#endif // LAYOUT_SVG_SVGIMAGEFRAME_H_ |