SVGForeignObjectFrame.h

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/* -*- 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_SVGFOREIGNOBJECTFRAME_H_

#define LAYOUT_SVG_SVGFOREIGNOBJECTFRAME_H_

#include "mozilla/Attributes.h"

#include "mozilla/ISVGDisplayableFrame.h"

#include "mozilla/PresShellForwards.h"

#include "mozilla/UniquePtr.h"

#include "nsContainerFrame.h"

class gfxContext;

nsContainerFrame* NS_NewSVGForeignObjectFrame(mozilla::PresShell* aPresShell,

                                              mozilla::ComputedStyle* aStyle);

namespace mozilla {

class SVGForeignObjectFrame final : public nsContainerFrame,

                                    public ISVGDisplayableFrame {

  friend nsContainerFrame* ::NS_NewSVGForeignObjectFrame(

      mozilla::PresShell* aPresShell, ComputedStyle* aStyle);

 protected:

  explicit SVGForeignObjectFrame(ComputedStyle* aStyle,

                                 nsPresContext* aPresContext);

 public:

  NS_DECL_QUERYFRAME

  NS_DECL_FRAMEARENA_HELPERS(SVGForeignObjectFrame)

  // nsIFrame:

  void Init(nsIContent* aContent, nsContainerFrame* aParent,

            nsIFrame* aPrevInFlow) override;

  nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,

                            int32_t aModType) override;

  nsContainerFrame* GetContentInsertionFrame() override {

    return PrincipalChildList().FirstChild()->GetContentInsertionFrame();

  void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,

              const ReflowInput& aReflowInput,

              nsReflowStatus& aStatus) override;

  void BuildDisplayList(nsDisplayListBuilder* aBuilder,

                        const nsDisplayListSet& aLists) override;

  bool IsSVGTransformed(Matrix* aOwnTransform,

                        Matrix* aFromParentTransform) const override;

#ifdef DEBUG_FRAME_DUMP

  nsresult GetFrameName(nsAString& aResult) const override {

    return MakeFrameName(u"SVGForeignObject"_ns, aResult);

#endif

  // ISVGDisplayableFrame interface:

  void PaintSVG(gfxContext& aContext, const gfxMatrix& aTransform,

                imgDrawingParams& aImgParams) override;

  nsIFrame* GetFrameForPoint(const gfxPoint& aPoint) override;

  void ReflowSVG() override;

  void NotifySVGChanged(uint32_t aFlags) override;

  SVGBBox GetBBoxContribution(const Matrix& aToBBoxUserspace,

                              uint32_t aFlags) override;

  bool IsDisplayContainer() override { return true; }

  gfxMatrix GetCanvasTM();

  // Return our ::-moz-svg-foreign-content anonymous box.

  void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;

  void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;

 protected:

  // implementation helpers:

  void DoReflow();

  void RequestReflow(IntrinsicDirty aType);

  // If width or height is less than or equal to zero we must disable rendering

  bool IsDisabled() const { return mRect.width <= 0 || mRect.height <= 0; }

  UniquePtr<gfxMatrix> mCanvasTM;

};

}  // namespace mozilla

#endif  // LAYOUT_SVG_SVGFOREIGNOBJECTFRAME_H_