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https://repo.dactyloidae.xyz/Dactyloidae/UXP.git
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0bcaa2ff90
We previously didn't do this because we relied on our anonymous wrapper to perform transforms. However, that resulted in only the children transforming, and the frame's cliprect wouldn't be updated, giving the impression of the z-ordering being wrong. Also adds reftests from the relevant BZ bug found later. Resolves #2355
273 lines
10 KiB
C++
273 lines
10 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 __NS_SVGOUTERSVGFRAME_H__
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#define __NS_SVGOUTERSVGFRAME_H__
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#include "mozilla/Attributes.h"
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#include "nsAutoPtr.h"
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#include "nsISVGSVGFrame.h"
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#include "nsSVGContainerFrame.h"
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#include "nsRegion.h"
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class gfxContext;
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class nsSVGForeignObjectFrame;
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////////////////////////////////////////////////////////////////////////
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// nsSVGOuterSVGFrame class
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class nsSVGOuterSVGFrame final : public nsSVGDisplayContainerFrame
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, public nsISVGSVGFrame
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{
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friend nsContainerFrame*
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NS_NewSVGOuterSVGFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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protected:
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explicit nsSVGOuterSVGFrame(nsStyleContext* aContext);
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS
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#ifdef DEBUG
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~nsSVGOuterSVGFrame() {
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NS_ASSERTION(!mForeignObjectHash || mForeignObjectHash->Count() == 0,
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"foreignObject(s) still registered!");
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}
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#endif
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// nsIFrame:
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virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override;
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virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override;
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virtual mozilla::IntrinsicSize GetIntrinsicSize() override;
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virtual mozilla::AspectRatio GetIntrinsicRatio() override;
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virtual mozilla::LogicalSize
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ComputeSize(nsRenderingContext *aRenderingContext,
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mozilla::WritingMode aWritingMode,
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const mozilla::LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorder,
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const mozilla::LogicalSize& aPadding,
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ComputeSizeFlags aFlags) override;
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virtual void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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virtual void DidReflow(nsPresContext* aPresContext,
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const ReflowInput* aReflowInput,
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nsDidReflowStatus aStatus) override;
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virtual void UnionChildOverflow(nsOverflowAreas& aOverflowAreas) override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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virtual nsSplittableType GetSplittableType() const override;
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::svgOuterSVGFrame
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*/
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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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{
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return MakeFrameName(NS_LITERAL_STRING("SVGOuterSVG"), aResult);
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}
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#endif
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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 nsContainerFrame* GetContentInsertionFrame() override {
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// Any children must be added to our single anonymous inner frame kid.
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MOZ_ASSERT(PrincipalChildList().FirstChild() &&
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PrincipalChildList().FirstChild()->GetType() ==
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nsGkAtoms::svgOuterSVGAnonChildFrame,
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"Where is our anonymous child?");
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return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
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}
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// Applies only to our own frame, see implementation note.
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bool IsSVGTransformed(Matrix* aOwnTransform,
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Matrix* aFromParentTransform) const override;
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// nsISVGSVGFrame interface:
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virtual void NotifyViewportOrTransformChanged(uint32_t aFlags) override;
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// nsISVGChildFrame methods:
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virtual DrawResult PaintSVG(gfxContext& aContext,
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const gfxMatrix& aTransform,
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const nsIntRect* aDirtyRect = nullptr) override;
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virtual SVGBBox GetBBoxContribution(const Matrix &aToBBoxUserspace,
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uint32_t aFlags) override;
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// nsSVGContainerFrame methods:
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virtual gfxMatrix GetCanvasTM() override;
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/* Methods to allow descendant nsSVGForeignObjectFrame frames to register and
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* unregister themselves with their nearest nsSVGOuterSVGFrame ancestor. This
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* is temporary until display list based invalidation is impleented for SVG.
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* Maintaining a list of our foreignObject descendants allows us to search
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* them for areas that need to be invalidated, without having to also search
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* the SVG frame tree for foreignObjects. This is important so that bug 539356
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* does not slow down SVG in general (only foreignObjects, until bug 614732 is
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* fixed).
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*/
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void RegisterForeignObject(nsSVGForeignObjectFrame* aFrame);
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void UnregisterForeignObject(nsSVGForeignObjectFrame* aFrame);
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virtual bool HasChildrenOnlyTransform(Matrix *aTransform) const override {
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// Our anonymous wrapper child must claim our children-only transforms as
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// its own so that our real children (the frames it wraps) are transformed
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// by them, and we must pretend we don't have any children-only transforms
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// so that our anonymous child is _not_ transformed by them.
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return false;
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}
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/**
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* Return true only if the height is unspecified (defaulting to 100%) or else
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* the height is explicitly set to a percentage value no greater than 100%.
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*/
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bool VerticalScrollbarNotNeeded() const;
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bool IsCallingReflowSVG() const {
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return mCallingReflowSVG;
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}
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void InvalidateSVG(const nsRegion& aRegion)
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{
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if (!aRegion.IsEmpty()) {
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mInvalidRegion.Or(mInvalidRegion, aRegion);
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InvalidateFrame();
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}
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}
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void ClearInvalidRegion() { mInvalidRegion.SetEmpty(); }
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const nsRegion& GetInvalidRegion() {
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nsRect rect;
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if (!IsInvalid(rect)) {
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mInvalidRegion.SetEmpty();
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}
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return mInvalidRegion;
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}
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nsRegion FindInvalidatedForeignObjectFrameChildren(nsIFrame* aFrame);
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protected:
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bool mCallingReflowSVG;
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/* Returns true if our content is the document element and our document is
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* embedded in an HTML 'object', 'embed' or 'applet' element. Set
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* aEmbeddingFrame to obtain the nsIFrame for the embedding HTML element.
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*/
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bool IsRootOfReplacedElementSubDoc(nsIFrame **aEmbeddingFrame = nullptr);
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/* Returns true if our content is the document element and our document is
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* being used as an image.
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*/
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bool IsRootOfImage();
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// This is temporary until display list based invalidation is implemented for
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// SVG.
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// A hash-set containing our nsSVGForeignObjectFrame descendants. Note we use
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// a hash-set to avoid the O(N^2) behavior we'd get tearing down an SVG frame
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// subtree if we were to use a list (see bug 381285 comment 20).
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nsAutoPtr<nsTHashtable<nsPtrHashKey<nsSVGForeignObjectFrame> > > mForeignObjectHash;
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nsAutoPtr<gfxMatrix> mCanvasTM;
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nsRegion mInvalidRegion;
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float mFullZoom;
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bool mViewportInitialized;
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bool mIsRootContent;
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};
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////////////////////////////////////////////////////////////////////////
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// nsSVGOuterSVGAnonChildFrame class
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/**
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* nsSVGOuterSVGFrames have a single direct child that is an instance of this
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* class, and which is used to wrap their real child frames. Such anonymous
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* wrapper frames created from this class exist because SVG frames need their
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* GetPosition() offset to be their offset relative to "user space" (in app
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* units) so that they can play nicely with nsDisplayTransform. This is fine
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* for all SVG frames except for direct children of an nsSVGOuterSVGFrame,
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* since an nsSVGOuterSVGFrame can have CSS border and padding (unlike other
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* SVG frames). The direct children can't include the offsets due to any such
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* border/padding in their mRects since that would break nsDisplayTransform,
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* but not including these offsets would break other parts of the Mozilla code
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* that assume a frame's mRect contains its border-box-to-parent-border-box
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* offset, in particular nsIFrame::GetOffsetTo and the functions that depend on
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* it. Wrapping an nsSVGOuterSVGFrame's children in an instance of this class
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* with its GetPosition() set to its nsSVGOuterSVGFrame's border/padding offset
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* keeps both nsDisplayTransform and nsIFrame::GetOffsetTo happy.
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*
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* The reason that this class inherit from nsSVGDisplayContainerFrame rather
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* than simply from nsContainerFrame is so that we can avoid having special
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* handling for these inner wrappers in multiple parts of the SVG code. For
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* example, the implementations of IsSVGTransformed and GetCanvasTM assume
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* nsSVGContainerFrame instances all the way up to the nsSVGOuterSVGFrame.
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*/
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class nsSVGOuterSVGAnonChildFrame : public nsSVGDisplayContainerFrame
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{
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friend nsContainerFrame*
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NS_NewSVGOuterSVGAnonChildFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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explicit nsSVGOuterSVGAnonChildFrame(nsStyleContext* aContext)
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: nsSVGDisplayContainerFrame(aContext)
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{}
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public:
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NS_DECL_FRAMEARENA_HELPERS
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#ifdef DEBUG
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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#endif
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override {
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return MakeFrameName(NS_LITERAL_STRING("SVGOuterSVGAnonChild"), aResult);
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}
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#endif
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::svgOuterSVGAnonChildFrame
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*/
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virtual nsIAtom* GetType() const override;
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bool IsSVGTransformed(Matrix *aOwnTransform,
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Matrix *aFromParentTransform) const override;
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// nsSVGContainerFrame methods:
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virtual gfxMatrix GetCanvasTM() override {
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// GetCanvasTM returns the transform from an SVG frame to the frame's
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// nsSVGOuterSVGFrame's content box, so we do not include any x/y offset
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// set on us for any CSS border or padding on our nsSVGOuterSVGFrame.
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return static_cast<nsSVGOuterSVGFrame*>(GetParent())->GetCanvasTM();
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}
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};
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#endif
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