tor-browser

The Tor Browser
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SVGForeignObjectFrame.h (3204B)

      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 #ifndef LAYOUT_SVG_SVGFOREIGNOBJECTFRAME_H_
      8 #define LAYOUT_SVG_SVGFOREIGNOBJECTFRAME_H_
      9 
     10 #include "mozilla/ISVGDisplayableFrame.h"
     11 #include "mozilla/PresShellForwards.h"
     12 #include "mozilla/UniquePtr.h"
     13 #include "nsContainerFrame.h"
     14 
     15 class gfxContext;
     16 
     17 nsContainerFrame* NS_NewSVGForeignObjectFrame(mozilla::PresShell* aPresShell,
     18                                              mozilla::ComputedStyle* aStyle);
     19 
     20 namespace mozilla {
     21 
     22 class SVGForeignObjectFrame final : public nsContainerFrame,
     23                                    public ISVGDisplayableFrame {
     24  friend nsContainerFrame* ::NS_NewSVGForeignObjectFrame(
     25      mozilla::PresShell* aPresShell, ComputedStyle* aStyle);
     26 
     27 protected:
     28  explicit SVGForeignObjectFrame(ComputedStyle* aStyle,
     29                                 nsPresContext* aPresContext);
     30 
     31 public:
     32  NS_DECL_QUERYFRAME
     33  NS_DECL_FRAMEARENA_HELPERS(SVGForeignObjectFrame)
     34 
     35  // nsIFrame:
     36  void Init(nsIContent* aContent, nsContainerFrame* aParent,
     37            nsIFrame* aPrevInFlow) override;
     38  nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
     39                            AttrModType aModType) override;
     40 
     41  nsContainerFrame* GetContentInsertionFrame() override {
     42    return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
     43  }
     44 
     45  void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
     46              const ReflowInput& aReflowInput,
     47              nsReflowStatus& aStatus) override;
     48 
     49  void BuildDisplayList(nsDisplayListBuilder* aBuilder,
     50                        const nsDisplayListSet& aLists) override;
     51 
     52  bool DoGetParentSVGTransforms(Matrix*) const override;
     53 
     54 #ifdef DEBUG_FRAME_DUMP
     55  nsresult GetFrameName(nsAString& aResult) const override {
     56    return MakeFrameName(u"SVGForeignObject"_ns, aResult);
     57  }
     58 #endif
     59 
     60  // ISVGDisplayableFrame interface:
     61  void PaintSVG(gfxContext& aContext, const gfxMatrix& aTransform,
     62                imgDrawingParams& aImgParams) override;
     63  nsIFrame* GetFrameForPoint(const gfxPoint& aPoint) override;
     64  void ReflowSVG() override;
     65  void NotifySVGChanged(ChangeFlags aFlags) override;
     66  SVGBBox GetBBoxContribution(const Matrix& aToBBoxUserspace,
     67                              uint32_t aFlags) override;
     68  bool IsDisplayContainer() override { return true; }
     69 
     70  gfxMatrix GetCanvasTM();
     71 
     72  // Return our ::-moz-svg-foreign-content anonymous box.
     73  void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
     74 
     75  void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
     76 
     77 protected:
     78  // implementation helpers:
     79  void DoReflow();
     80  void RequestReflow(IntrinsicDirty aType);
     81 
     82  // If width or height is less than or equal to zero we must disable rendering
     83  bool IsDisabled() const { return mRect.width <= 0 || mRect.height <= 0; }
     84 
     85  UniquePtr<gfxMatrix> mCanvasTM;
     86 };
     87 
     88 }  // namespace mozilla
     89 
     90 #endif  // LAYOUT_SVG_SVGFOREIGNOBJECTFRAME_H_