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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/SVGFELeafFrame.cpp | |
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/SVGFELeafFrame.cpp')
-rw-r--r-- | layout/svg/SVGFELeafFrame.cpp | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/layout/svg/SVGFELeafFrame.cpp b/layout/svg/SVGFELeafFrame.cpp new file mode 100644 index 0000000000..c49ae429b4 --- /dev/null +++ b/layout/svg/SVGFELeafFrame.cpp @@ -0,0 +1,105 @@ +/* -*- 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/. */ + +// Keep in (case-insensitive) order: +#include "mozilla/PresShell.h" +#include "mozilla/SVGObserverUtils.h" +#include "mozilla/dom/SVGFilters.h" +#include "ComputedStyle.h" +#include "nsContainerFrame.h" +#include "nsIFrame.h" +#include "nsGkAtoms.h" + +using namespace mozilla::dom; + +nsIFrame* NS_NewSVGFELeafFrame(mozilla::PresShell* aPresShell, + mozilla::ComputedStyle* aStyle); +namespace mozilla { + +/* + * This frame is used by filter primitive elements that don't + * have special child elements that provide parameters. + */ +class SVGFELeafFrame final : public nsIFrame { + friend nsIFrame* ::NS_NewSVGFELeafFrame(mozilla::PresShell* aPresShell, + ComputedStyle* aStyle); + + protected: + explicit SVGFELeafFrame(ComputedStyle* aStyle, nsPresContext* aPresContext) + : nsIFrame(aStyle, aPresContext, kClassID) { + AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY); + } + + public: + NS_DECL_FRAMEARENA_HELPERS(SVGFELeafFrame) + +#ifdef DEBUG + virtual void Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) override; +#endif + + bool IsFrameOfType(uint32_t aFlags) const override { + if (aFlags & eSupportsContainLayoutAndPaint) { + return false; + } + + return nsIFrame::IsFrameOfType(aFlags & ~(nsIFrame::eSVG)); + } + +#ifdef DEBUG_FRAME_DUMP + nsresult GetFrameName(nsAString& aResult) const override { + return MakeFrameName(u"SVGFELeaf"_ns, aResult); + } +#endif + + virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute, + int32_t aModType) override; + + bool ComputeCustomOverflow(OverflowAreas& aOverflowAreas) override { + // We don't maintain a ink overflow rect + return false; + } +}; + +} // namespace mozilla + +nsIFrame* NS_NewSVGFELeafFrame(mozilla::PresShell* aPresShell, + mozilla::ComputedStyle* aStyle) { + return new (aPresShell) + mozilla::SVGFELeafFrame(aStyle, aPresShell->GetPresContext()); +} + +namespace mozilla { + +NS_IMPL_FRAMEARENA_HELPERS(SVGFELeafFrame) + +#ifdef DEBUG +void SVGFELeafFrame::Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) { + nsCOMPtr<SVGFE> filterPrimitive = do_QueryInterface(aContent); + NS_ASSERTION(filterPrimitive, + "Trying to construct an SVGFELeafFrame for a " + "content element that doesn't support the right interfaces"); + + nsIFrame::Init(aContent, aParent, aPrevInFlow); +} +#endif /* DEBUG */ + +nsresult SVGFELeafFrame::AttributeChanged(int32_t aNameSpaceID, + nsAtom* aAttribute, + int32_t aModType) { + auto* element = static_cast<mozilla::dom::SVGFE*>(GetContent()); + if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) { + MOZ_ASSERT( + GetParent()->IsSVGFilterFrame(), + "Observers observe the filter, so that's what we must invalidate"); + SVGObserverUtils::InvalidateDirectRenderingObservers(GetParent()); + } + + return nsIFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType); +} + +} // namespace mozilla |