DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (fddffdeab170)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 __NS_SVGPATHGEOMETRYFRAME_H__
#define __NS_SVGPATHGEOMETRYFRAME_H__

#include "mozilla/Attributes.h"
#include "gfxMatrix.h"
#include "gfxRect.h"
#include "nsFrame.h"
#include "nsISVGChildFrame.h"
#include "nsLiteralString.h"
#include "nsQueryFrame.h"
#include "nsSVGUtils.h"

namespace mozilla {
namespace gfx {
class DrawTarget;
} // namespace gfx
} // namespace mozilla

class gfxContext;
class nsDisplaySVGPathGeometry;
class nsIAtom;
class nsIFrame;
class nsIPresShell;
class nsStyleContext;
class nsSVGMarkerFrame;
class nsSVGMarkerProperty;

struct nsRect;

typedef nsFrame nsSVGPathGeometryFrameBase;

class nsSVGPathGeometryFrame : public nsSVGPathGeometryFrameBase,
                               public nsISVGChildFrame
{
  typedef mozilla::gfx::DrawTarget DrawTarget;

  friend nsIFrame*
  NS_NewSVGPathGeometryFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

  friend class nsDisplaySVGPathGeometry;

protected:
  explicit nsSVGPathGeometryFrame(nsStyleContext* aContext)
    : nsSVGPathGeometryFrameBase(aContext)
  {
     AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_MAY_BE_TRANSFORMED);
  }

public:
  NS_DECL_QUERYFRAME_TARGET(nsSVGPathGeometryFrame)
  NS_DECL_QUERYFRAME
  NS_DECL_FRAMEARENA_HELPERS

  // nsIFrame interface:
  virtual void Init(nsIContent*       aContent,
                    nsContainerFrame* aParent,
                    nsIFrame*         aPrevInFlow) override;

  virtual bool IsFrameOfType(uint32_t aFlags) const override
  {
    return nsSVGPathGeometryFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG | nsIFrame::eSVGGeometry));
  }

  virtual nsresult  AttributeChanged(int32_t         aNameSpaceID,
                                     nsIAtom*        aAttribute,
                                     int32_t         aModType) override;

  virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;

  /**
   * Get the "type" of the frame
   *
   * @see nsGkAtoms::svgPathGeometryFrame
   */
  virtual nsIAtom* GetType() const override;

  virtual bool IsSVGTransformed(Matrix *aOwnTransforms = nullptr,
                                Matrix *aFromParentTransforms = nullptr) const override;

#ifdef DEBUG_FRAME_DUMP
  virtual nsresult GetFrameName(nsAString& aResult) const override
  {
    return MakeFrameName(NS_LITERAL_STRING("SVGPathGeometry"), aResult);
  }
#endif

  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
                                const nsRect&           aDirtyRect,
                                const nsDisplayListSet& aLists) override;

  // nsSVGPathGeometryFrame methods
  gfxMatrix GetCanvasTM();
protected:
  // nsISVGChildFrame interface:
  virtual nsresult PaintSVG(gfxContext& aContext,
                            const gfxMatrix& aTransform,
                            const nsIntRect* aDirtyRect = nullptr) override;
  virtual nsIFrame* GetFrameForPoint(const gfxPoint& aPoint) override;
  virtual nsRect GetCoveredRegion() override;
  virtual void ReflowSVG() override;
  virtual void NotifySVGChanged(uint32_t aFlags) override;
  virtual SVGBBox GetBBoxContribution(const Matrix &aToBBoxUserspace,
                                      uint32_t aFlags) override;
  virtual bool IsDisplayContainer() override { return false; }

  /**
   * This function returns a set of bit flags indicating which parts of the
   * element (fill, stroke, bounds) should intercept pointer events. It takes
   * into account the type of element and the value of the 'pointer-events'
   * property on the element.
   */
  virtual uint16_t GetHitTestFlags();
private:
  enum { eRenderFill = 1, eRenderStroke = 2 };
  void Render(gfxContext* aContext, uint32_t aRenderComponents,
              const gfxMatrix& aTransform);

  /**
   * @param aMatrix The transform that must be multiplied onto aContext to
   *   establish this frame's SVG user space.
   */
  void PaintMarkers(gfxContext& aContext, const gfxMatrix& aMatrix);

  struct MarkerProperties {
    nsSVGMarkerProperty* mMarkerStart;
    nsSVGMarkerProperty* mMarkerMid;
    nsSVGMarkerProperty* mMarkerEnd;

    bool MarkersExist() const {
      return mMarkerStart || mMarkerMid || mMarkerEnd;
    }

    nsSVGMarkerFrame *GetMarkerStartFrame();
    nsSVGMarkerFrame *GetMarkerMidFrame();
    nsSVGMarkerFrame *GetMarkerEndFrame();
  };

  /**
   * @param aFrame should be the first continuation
   */
  static MarkerProperties GetMarkerProperties(nsSVGPathGeometryFrame *aFrame);
};

#endif // __NS_SVGPATHGEOMETRYFRAME_H__