tor-browser

The Tor Browser
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SVGFEUnstyledLeafFrame.cpp (2810B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 // Keep in (case-insensitive) order:
      8 #include "mozilla/PresShell.h"
      9 #include "mozilla/SVGObserverUtils.h"
     10 #include "mozilla/dom/SVGFilters.h"
     11 #include "nsContainerFrame.h"
     12 #include "nsGkAtoms.h"
     13 #include "nsIFrame.h"
     14 
     15 nsIFrame* NS_NewSVGFEUnstyledLeafFrame(mozilla::PresShell* aPresShell,
     16                                       mozilla::ComputedStyle* aStyle);
     17 
     18 namespace mozilla {
     19 
     20 class SVGFEUnstyledLeafFrame final : public nsIFrame {
     21  friend nsIFrame* ::NS_NewSVGFEUnstyledLeafFrame(
     22      mozilla::PresShell* aPresShell, ComputedStyle* aStyle);
     23 
     24 protected:
     25  explicit SVGFEUnstyledLeafFrame(ComputedStyle* aStyle,
     26                                  nsPresContext* aPresContext)
     27      : nsIFrame(aStyle, aPresContext, kClassID) {
     28    AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
     29  }
     30 
     31 public:
     32  NS_DECL_FRAMEARENA_HELPERS(SVGFEUnstyledLeafFrame)
     33 
     34  void BuildDisplayList(nsDisplayListBuilder* aBuilder,
     35                        const nsDisplayListSet& aLists) override {}
     36 
     37 #ifdef DEBUG_FRAME_DUMP
     38  nsresult GetFrameName(nsAString& aResult) const override {
     39    return MakeFrameName(u"SVGFEUnstyledLeaf"_ns, aResult);
     40  }
     41 #endif
     42 
     43  nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
     44                            AttrModType aModType) override;
     45 
     46  bool ComputeCustomOverflow(OverflowAreas& aOverflowAreas) override {
     47    // We don't maintain a ink overflow rect
     48    return false;
     49  }
     50 };
     51 
     52 }  // namespace mozilla
     53 
     54 nsIFrame* NS_NewSVGFEUnstyledLeafFrame(mozilla::PresShell* aPresShell,
     55                                       mozilla::ComputedStyle* aStyle) {
     56  return new (aPresShell)
     57      mozilla::SVGFEUnstyledLeafFrame(aStyle, aPresShell->GetPresContext());
     58 }
     59 
     60 namespace mozilla {
     61 
     62 NS_IMPL_FRAMEARENA_HELPERS(SVGFEUnstyledLeafFrame)
     63 
     64 nsresult SVGFEUnstyledLeafFrame::AttributeChanged(int32_t aNameSpaceID,
     65                                                  nsAtom* aAttribute,
     66                                                  AttrModType aModType) {
     67  auto* element =
     68      static_cast<mozilla::dom::SVGFilterPrimitiveChildElement*>(GetContent());
     69  if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
     70    MOZ_ASSERT(
     71        GetParent()->GetParent()->IsSVGFilterFrame(),
     72        "Observers observe the filter, so that's what we must invalidate");
     73    SVGObserverUtils::InvalidateRenderingObservers(GetParent()->GetParent());
     74  }
     75 
     76  return nsIFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
     77 }
     78 
     79 }  // namespace mozilla