forked from mirrors/gecko-dev
5730ee0ca5
Extend the per-frame-class bit we have to devirtualize IsLeaf to also devirtualize IsFrameOfType. That is, move this data to FrameClasses.py. This was done by going through all the frame classes, trying to preserve behavior. The only quirky thing is that I had to add two more trivial frame classes, `nsAudioFrame` for audio elements, and `nsFloatingFirstLetterFrame`. That's because these frame classes were returning different answers at runtime, but they do this only on conditions that trigger frame reconstruction (floating, and being an audio element, respectively). Differential Revision: https://phabricator.services.mozilla.com/D194703
111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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// Keep in (case-insensitive) order:
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#include "mozilla/PresShell.h"
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#include "mozilla/SVGOuterSVGFrame.h"
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#include "mozilla/SVGUtils.h"
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#include "mozilla/dom/SVGSVGElement.h"
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#include "mozilla/dom/SVGViewElement.h"
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#include "nsIFrame.h"
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#include "nsGkAtoms.h"
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using namespace mozilla::dom;
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nsIFrame* NS_NewSVGViewFrame(mozilla::PresShell* aPresShell,
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mozilla::ComputedStyle* aStyle);
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namespace mozilla {
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/**
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* While views are not directly rendered in SVG they can be linked to
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* and thereby override attributes of an <svg> element via a fragment
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* identifier. The SVGViewFrame class passes on any attribute changes
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* the view receives to the overridden <svg> element (if there is one).
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**/
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class SVGViewFrame final : public nsIFrame {
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friend nsIFrame* ::NS_NewSVGViewFrame(mozilla::PresShell* aPresShell,
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ComputedStyle* aStyle);
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protected:
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explicit SVGViewFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
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: nsIFrame(aStyle, aPresContext, kClassID) {
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AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
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}
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public:
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NS_DECL_FRAMEARENA_HELPERS(SVGViewFrame)
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#ifdef DEBUG
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void Init(nsIContent* aContent, 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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nsresult GetFrameName(nsAString& aResult) const override {
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return MakeFrameName(u"SVGView"_ns, aResult);
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}
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#endif
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nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
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int32_t aModType) override;
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bool ComputeCustomOverflow(OverflowAreas& aOverflowAreas) override {
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// We don't maintain a ink overflow rect
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return false;
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}
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};
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} // namespace mozilla
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nsIFrame* NS_NewSVGViewFrame(mozilla::PresShell* aPresShell,
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mozilla::ComputedStyle* aStyle) {
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return new (aPresShell)
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mozilla::SVGViewFrame(aStyle, aPresShell->GetPresContext());
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}
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namespace mozilla {
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NS_IMPL_FRAMEARENA_HELPERS(SVGViewFrame)
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#ifdef DEBUG
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void SVGViewFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) {
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NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::view),
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"Content is not an SVG view");
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nsIFrame::Init(aContent, aParent, aPrevInFlow);
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}
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#endif /* DEBUG */
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nsresult SVGViewFrame::AttributeChanged(int32_t aNameSpaceID,
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nsAtom* aAttribute, int32_t aModType) {
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// Ignore zoomAndPan as it does not cause the <svg> element to re-render
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if (aNameSpaceID == kNameSpaceID_None &&
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(aAttribute == nsGkAtoms::preserveAspectRatio ||
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aAttribute == nsGkAtoms::viewBox)) {
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SVGOuterSVGFrame* outerSVGFrame = SVGUtils::GetOuterSVGFrame(this);
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NS_ASSERTION(outerSVGFrame->GetContent()->IsSVGElement(nsGkAtoms::svg),
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"Expecting an <svg> element");
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SVGSVGElement* svgElement =
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static_cast<SVGSVGElement*>(outerSVGFrame->GetContent());
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nsAutoString viewID;
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mContent->AsElement()->GetAttr(nsGkAtoms::id, viewID);
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if (svgElement->IsOverriddenBy(viewID)) {
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// We're the view that's providing overrides, so pretend that the frame
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// we're overriding was updated.
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outerSVGFrame->AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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}
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return nsIFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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} // namespace mozilla
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