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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /layout/svg/SVGMarkerFrame.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/svg/SVGMarkerFrame.h')
-rw-r--r-- | layout/svg/SVGMarkerFrame.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/layout/svg/SVGMarkerFrame.h b/layout/svg/SVGMarkerFrame.h new file mode 100644 index 0000000000..7f4da9c5a5 --- /dev/null +++ b/layout/svg/SVGMarkerFrame.h @@ -0,0 +1,164 @@ +/* -*- 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_SVGMARKERFRAME_H_ +#define LAYOUT_SVG_SVGMARKERFRAME_H_ + +#include "mozilla/Attributes.h" +#include "mozilla/SVGContainerFrame.h" +#include "gfxMatrix.h" +#include "gfxRect.h" +#include "nsIFrame.h" +#include "nsLiteralString.h" +#include "nsQueryFrame.h" + +class gfxContext; + +namespace mozilla { + +class PresShell; +class SVGGeometryFrame; + +struct SVGMark; + +namespace dom { +class SVGViewportElement; +} // namespace dom +} // namespace mozilla + +nsContainerFrame* NS_NewSVGMarkerFrame(mozilla::PresShell* aPresShell, + mozilla::ComputedStyle* aStyle); +nsContainerFrame* NS_NewSVGMarkerAnonChildFrame(mozilla::PresShell* aPresShell, + mozilla::ComputedStyle* aStyle); + +namespace mozilla { + +class SVGMarkerFrame final : public SVGContainerFrame { + using imgDrawingParams = image::imgDrawingParams; + + friend class SVGMarkerAnonChildFrame; + friend nsContainerFrame* ::NS_NewSVGMarkerFrame( + mozilla::PresShell* aPresShell, ComputedStyle* aStyle); + + protected: + explicit SVGMarkerFrame(ComputedStyle* aStyle, nsPresContext* aPresContext) + : SVGContainerFrame(aStyle, aPresContext, kClassID), + mMarkedFrame(nullptr), + mInUse(false), + mInUse2(false) { + AddStateBits(NS_FRAME_IS_NONDISPLAY); + } + + public: + NS_DECL_FRAMEARENA_HELPERS(SVGMarkerFrame) + + // nsIFrame interface: +#ifdef DEBUG + void Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) override; +#endif + + void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override {} + + nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute, + int32_t aModType) override; + +#ifdef DEBUG_FRAME_DUMP + nsresult GetFrameName(nsAString& aResult) const override { + return MakeFrameName(u"SVGMarker"_ns, aResult); + } +#endif + + nsContainerFrame* GetContentInsertionFrame() override { + // Any children must be added to our single anonymous inner frame kid. + MOZ_ASSERT( + PrincipalChildList().FirstChild() && + PrincipalChildList().FirstChild()->IsSVGMarkerAnonChildFrame(), + "Where is our anonymous child?"); + return PrincipalChildList().FirstChild()->GetContentInsertionFrame(); + } + + // SVGMarkerFrame methods: + void PaintMark(gfxContext& aContext, const gfxMatrix& aToMarkedFrameUserSpace, + SVGGeometryFrame* aMarkedFrame, const SVGMark& aMark, + float aStrokeWidth, imgDrawingParams& aImgParams); + + SVGBBox GetMarkBBoxContribution(const Matrix& aToBBoxUserspace, + uint32_t aFlags, + SVGGeometryFrame* aMarkedFrame, + const SVGMark& aMark, float aStrokeWidth); + + // Return our anonymous box child. + void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override; + + private: + // stuff needed for callback + SVGGeometryFrame* mMarkedFrame; + Matrix mMarkerTM; + + // SVGContainerFrame methods: + gfxMatrix GetCanvasTM() override; + + // A helper class to allow us to paint markers safely. The helper + // automatically sets and clears the mInUse flag on the marker frame (to + // prevent nasty reference loops) as well as the reference to the marked + // frame and its coordinate context. It's easy to mess this up + // and break things, so this helper makes the code far more robust. + class MOZ_RAII AutoMarkerReferencer { + public: + AutoMarkerReferencer(SVGMarkerFrame* aFrame, + SVGGeometryFrame* aMarkedFrame); + ~AutoMarkerReferencer(); + + private: + SVGMarkerFrame* mFrame; + }; + + // SVGMarkerFrame methods: + void SetParentCoordCtxProvider(dom::SVGViewportElement* aContext); + + // recursion prevention flag + bool mInUse; + + // second recursion prevention flag, for GetCanvasTM() + bool mInUse2; +}; + +//////////////////////////////////////////////////////////////////////// +// nsMarkerAnonChildFrame class + +class SVGMarkerAnonChildFrame final : public SVGDisplayContainerFrame { + friend nsContainerFrame* ::NS_NewSVGMarkerAnonChildFrame( + mozilla::PresShell* aPresShell, ComputedStyle* aStyle); + + explicit SVGMarkerAnonChildFrame(ComputedStyle* aStyle, + nsPresContext* aPresContext) + : SVGDisplayContainerFrame(aStyle, aPresContext, kClassID) {} + + public: + NS_DECL_FRAMEARENA_HELPERS(SVGMarkerAnonChildFrame) + +#ifdef DEBUG + void Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) override; +#endif + +#ifdef DEBUG_FRAME_DUMP + nsresult GetFrameName(nsAString& aResult) const override { + return MakeFrameName(u"SVGMarkerAnonChild"_ns, aResult); + } +#endif + + // SVGContainerFrame methods: + gfxMatrix GetCanvasTM() override { + return static_cast<SVGMarkerFrame*>(GetParent())->GetCanvasTM(); + } +}; + +} // namespace mozilla + +#endif // LAYOUT_SVG_SVGMARKERFRAME_H_ |