tor-browser

The Tor Browser
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SVGPathElement.h (3508B)

      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 "SVGAnimatedPathSegList.h"
     11 #include "SVGGeometryElement.h"
     12 #include "mozilla/RefPtr.h"
     13 #include "mozilla/gfx/2D.h"
     14 
     15 nsresult NS_NewSVGPathElement(
     16    nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
     17 
     18 namespace mozilla::dom {
     19 
     20 struct SVGPathDataSettings;
     21 struct SVGPathSegmentInit;
     22 class SVGPathSegment;
     23 
     24 using SVGPathElementBase = SVGGeometryElement;
     25 
     26 class SVGPathElement final : public SVGPathElementBase {
     27  using Path = mozilla::gfx::Path;
     28 
     29 protected:
     30  friend nsresult(::NS_NewSVGPathElement(
     31      nsIContent** aResult,
     32      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
     33  JSObject* WrapNode(JSContext* cx, JS::Handle<JSObject*> aGivenProto) override;
     34  explicit SVGPathElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
     35 
     36  void GetAsSimplePath(SimplePath* aSimplePath) override;
     37 
     38 public:
     39  NS_DECL_ADDSIZEOFEXCLUDINGTHIS
     40 
     41  // nsIContent interface
     42  NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* name) const override;
     43 
     44  // SVGSVGElement methods:
     45  bool HasValidDimensions() const override;
     46 
     47  // SVGGeometryElement methods:
     48  bool AttributeDefinesGeometry(const nsAtom* aName) override;
     49  bool IsMarkable() override;
     50  void GetMarkPoints(nsTArray<SVGMark>* aMarks) override;
     51  /*
     52   * Note: This function maps d attribute to CSS d property, and we don't flush
     53   * style in this function because some callers don't need it, so if the caller
     54   * needs style to be flushed (e.g. DOM APIs), the caller should flush style
     55   * before calling this.
     56   */
     57  already_AddRefed<Path> BuildPath(PathBuilder* aBuilder) override;
     58 
     59  /**
     60   * This returns a path without the extra little line segments that
     61   * ApproximateZeroLengthSubpathSquareCaps can insert if we have square-caps.
     62   * See the comment for that function for more info on that.
     63   *
     64   * Note: This function maps d attribute to CSS d property, and we don't flush
     65   * style in this function because some callers don't need it, so if the caller
     66   * needs style to be flushed (e.g. DOM APIs), the caller should flush style
     67   * before calling this.
     68   */
     69  already_AddRefed<Path> GetOrBuildPathForMeasuring() override;
     70 
     71  bool GetDistancesFromOriginToEndsOfVisibleSegments(
     72      FallibleTArray<double>* aOutput) override;
     73 
     74  bool IsClosedLoop() const override;
     75 
     76  // nsIContent interface
     77  nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
     78 
     79  SVGAnimatedPathSegList* GetAnimPathSegList() override { return &mD; }
     80 
     81  nsStaticAtom* GetPathDataAttrName() const override { return nsGkAtoms::d; }
     82 
     83  // WebIDL
     84  MOZ_CAN_RUN_SCRIPT
     85  already_AddRefed<SVGPathSegment> GetPathSegmentAtLength(float distance);
     86  MOZ_CAN_RUN_SCRIPT
     87  void GetPathData(const SVGPathDataSettings& aOptions,
     88                   nsTArray<RefPtr<SVGPathSegment>>& aValues);
     89  void SetPathData(const Sequence<SVGPathSegmentInit>& aValues);
     90 
     91  static bool IsDPropertyChangedViaCSS(const ComputedStyle& aNewStyle,
     92                                       const ComputedStyle& aOldStyle);
     93 
     94 protected:
     95  SVGAnimatedPathSegList mD;
     96 };
     97 
     98 }  // namespace mozilla::dom
     99 
    100 #endif  // DOM_SVG_SVGPATHELEMENT_H_