dom/svg/SVGPathElement.h

   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 DOM_SVG_SVGPATHELEMENT_H_
   8 #define DOM_SVG_SVGPATHELEMENT_H_
   9
  10 #include "mozilla/gfx/2D.h"
  11 #include "mozilla/RefPtr.h"
  12 #include "SVGAnimatedPathSegList.h"
  13 #include "SVGGeometryElement.h"
  14 #include "DOMSVGPathSeg.h"
  15
  16 nsresult NS_NewSVGPathElement(
  17     nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  18
  19 namespace mozilla::dom {
  20
  21 using SVGPathElementBase = SVGGeometryElement;
  22
  23 class SVGPathElement final : public SVGPathElementBase {
  24   using Path = mozilla::gfx::Path;
  25
  26  protected:
  27   friend nsresult(::NS_NewSVGPathElement(
  28       nsIContent** aResult,
  29       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
  30   JSObject* WrapNode(JSContext* cx, JS::Handle<JSObject*> aGivenProto) override;
  31   explicit SVGPathElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  32
  33   void GetAsSimplePath(SimplePath* aSimplePath) override;
  34
  35  public:
  36   NS_DECL_ADDSIZEOFEXCLUDINGTHIS
  37
  38   // nsIContent interface
  39   NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* name) const override;
  40
  41   // SVGSVGElement methods:
  42   bool HasValidDimensions() const override;
  43
  44   // SVGGeometryElement methods:
  45   bool AttributeDefinesGeometry(const nsAtom* aName) override;
  46   bool IsMarkable() override;
  47   void GetMarkPoints(nsTArray<SVGMark>* aMarks) override;
  48   /*
  49    * Note: This function maps d attribute to CSS d property, and we don't flush
  50    * style in this function because some callers don't need it, so if the caller
  51    * needs style to be flushed (e.g. DOM APIs), the caller should flush style
  52    * before calling this.
  53    */
  54   already_AddRefed<Path> BuildPath(PathBuilder* aBuilder) override;
  55
  56   /**
  57    * This returns a path without the extra little line segments that
  58    * ApproximateZeroLengthSubpathSquareCaps can insert if we have square-caps.
  59    * See the comment for that function for more info on that.
  60    *
  61    * Note: This function maps d attribute to CSS d property, and we don't flush
  62    * style in this function because some callers don't need it, so if the caller
  63    * needs style to be flushed (e.g. DOM APIs), the caller should flush style
  64    * before calling this.
  65    */
  66   already_AddRefed<Path> GetOrBuildPathForMeasuring() override;
  67
  68   bool GetDistancesFromOriginToEndsOfVisibleSegments(
  69       FallibleTArray<double>* aOutput) override;
  70
  71   // nsIContent interface
  72   nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  73
  74   SVGAnimatedPathSegList* GetAnimPathSegList() override { return &mD; }
  75
  76   nsStaticAtom* GetPathDataAttrName() const override { return nsGkAtoms::d; }
  77
  78   // WebIDL
  79   MOZ_CAN_RUN_SCRIPT uint32_t GetPathSegAtLength(float distance);
  80   already_AddRefed<DOMSVGPathSegClosePath> CreateSVGPathSegClosePath();
  81   already_AddRefed<DOMSVGPathSegMovetoAbs> CreateSVGPathSegMovetoAbs(float x,
  82                                                                      float y);
  83   already_AddRefed<DOMSVGPathSegMovetoRel> CreateSVGPathSegMovetoRel(float x,
  84                                                                      float y);
  85   already_AddRefed<DOMSVGPathSegLinetoAbs> CreateSVGPathSegLinetoAbs(float x,
  86                                                                      float y);
  87   already_AddRefed<DOMSVGPathSegLinetoRel> CreateSVGPathSegLinetoRel(float x,
  88                                                                      float y);
  89   already_AddRefed<DOMSVGPathSegCurvetoCubicAbs>
  90   CreateSVGPathSegCurvetoCubicAbs(float x, float y, float x1, float y1,
  91                                   float x2, float y2);
  92   already_AddRefed<DOMSVGPathSegCurvetoCubicRel>
  93   CreateSVGPathSegCurvetoCubicRel(float x, float y, float x1, float y1,
  94                                   float x2, float y2);
  95   already_AddRefed<DOMSVGPathSegCurvetoQuadraticAbs>
  96   CreateSVGPathSegCurvetoQuadraticAbs(float x, float y, float x1, float y1);
  97   already_AddRefed<DOMSVGPathSegCurvetoQuadraticRel>
  98   CreateSVGPathSegCurvetoQuadraticRel(float x, float y, float x1, float y1);
  99   already_AddRefed<DOMSVGPathSegArcAbs> CreateSVGPathSegArcAbs(
 100       float x, float y, float r1, float r2, float angle, bool largeArcFlag,
 101       bool sweepFlag);
 102   already_AddRefed<DOMSVGPathSegArcRel> CreateSVGPathSegArcRel(
 103       float x, float y, float r1, float r2, float angle, bool largeArcFlag,
 104       bool sweepFlag);
 105   already_AddRefed<DOMSVGPathSegLinetoHorizontalAbs>
 106   CreateSVGPathSegLinetoHorizontalAbs(float x);
 107   already_AddRefed<DOMSVGPathSegLinetoHorizontalRel>
 108   CreateSVGPathSegLinetoHorizontalRel(float x);
 109   already_AddRefed<DOMSVGPathSegLinetoVerticalAbs>
 110   CreateSVGPathSegLinetoVerticalAbs(float y);
 111   already_AddRefed<DOMSVGPathSegLinetoVerticalRel>
 112   CreateSVGPathSegLinetoVerticalRel(float y);
 113   already_AddRefed<DOMSVGPathSegCurvetoCubicSmoothAbs>
 114   CreateSVGPathSegCurvetoCubicSmoothAbs(float x, float y, float x2, float y2);
 115   already_AddRefed<DOMSVGPathSegCurvetoCubicSmoothRel>
 116   CreateSVGPathSegCurvetoCubicSmoothRel(float x, float y, float x2, float y2);
 117   already_AddRefed<DOMSVGPathSegCurvetoQuadraticSmoothAbs>
 118   CreateSVGPathSegCurvetoQuadraticSmoothAbs(float x, float y);
 119   already_AddRefed<DOMSVGPathSegCurvetoQuadraticSmoothRel>
 120   CreateSVGPathSegCurvetoQuadraticSmoothRel(float x, float y);
 121   already_AddRefed<DOMSVGPathSegList> PathSegList();
 122   already_AddRefed<DOMSVGPathSegList> AnimatedPathSegList();
 123
 124   static bool IsDPropertyChangedViaCSS(const ComputedStyle& aNewStyle,
 125                                        const ComputedStyle& aOldStyle);
 126
 127  protected:
 128   SVGAnimatedPathSegList mD;
 129 };
 130
 131 }  // namespace mozilla::dom
 132
 133 #endif  // DOM_SVG_SVGPATHELEMENT_H_