SVGPathElement.h - mozsearch

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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 DOM_SVG_SVGPATHELEMENT_H_

#define DOM_SVG_SVGPATHELEMENT_H_

#include "mozilla/gfx/2D.h"

#include "mozilla/RefPtr.h"

#include "SVGAnimatedPathSegList.h"

#include "SVGGeometryElement.h"

nsresult NS_NewSVGPathElement(

    nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);

namespace mozilla::dom {

using SVGPathElementBase = SVGGeometryElement;

class SVGPathElement final : public SVGPathElementBase {

  using Path = mozilla::gfx::Path;

 protected:

  friend nsresult(::NS_NewSVGPathElement(

      nsIContent** aResult,

      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));

  JSObject* WrapNode(JSContext* cx, JS::Handle<JSObject*> aGivenProto) override;

  explicit SVGPathElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);

  void GetAsSimplePath(SimplePath* aSimplePath) override;

 public:

  NS_DECL_ADDSIZEOFEXCLUDINGTHIS

  // nsIContent interface

  NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* name) const override;

  // SVGSVGElement methods:

  bool HasValidDimensions() const override;

  // SVGGeometryElement methods:

  bool AttributeDefinesGeometry(const nsAtom* aName) override;

  bool IsMarkable() override;

  void GetMarkPoints(nsTArray<SVGMark>* aMarks) override;

/*

   * Note: This function maps d attribute to CSS d property, and we don't flush

   * style in this function because some callers don't need it, so if the caller

   * needs style to be flushed (e.g. DOM APIs), the caller should flush style

   * before calling this.

*/

  already_AddRefed<Path> BuildPath(PathBuilder* aBuilder) override;

/**

   * This returns a path without the extra little line segments that

   * ApproximateZeroLengthSubpathSquareCaps can insert if we have square-caps.

   * See the comment for that function for more info on that.

   * Note: This function maps d attribute to CSS d property, and we don't flush

   * style in this function because some callers don't need it, so if the caller

   * needs style to be flushed (e.g. DOM APIs), the caller should flush style

   * before calling this.

*/

  already_AddRefed<Path> GetOrBuildPathForMeasuring() override;

  bool GetDistancesFromOriginToEndsOfVisibleSegments(

      FallibleTArray<double>* aOutput) override;

  bool IsClosedLoop() const override;

  // nsIContent interface

  nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;

  SVGAnimatedPathSegList* GetAnimPathSegList() override { return &mD; }

  nsStaticAtom* GetPathDataAttrName() const override { return nsGkAtoms::d; }

  static bool IsDPropertyChangedViaCSS(const ComputedStyle& aNewStyle,

                                       const ComputedStyle& aOldStyle);

 protected:

  SVGAnimatedPathSegList mD;

};

}  // namespace mozilla::dom

#endif  // DOM_SVG_SVGPATHELEMENT_H_