зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
3.0 KiB
C++
85 строки
3.0 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef CanvasPath_h
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#define CanvasPath_h
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#include "mozilla/Attributes.h"
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#include "mozilla/RefPtr.h"
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#include "nsWrapperCache.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/dom/BindingDeclarations.h"
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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enum class CanvasWindingRule : uint8_t;
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struct DOMMatrix2DInit;
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class CanvasPath final : public nsWrapperCache {
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public:
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(CanvasPath)
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(CanvasPath)
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nsCOMPtr<nsISupports> GetParentObject() { return mParent; }
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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static already_AddRefed<CanvasPath> Constructor(const GlobalObject& aGlobal);
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static already_AddRefed<CanvasPath> Constructor(const GlobalObject& aGlobal,
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CanvasPath& aCanvasPath);
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static already_AddRefed<CanvasPath> Constructor(const GlobalObject& aGlobal,
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const nsAString& aPathString);
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void ClosePath();
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void MoveTo(double x, double y);
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void LineTo(double x, double y);
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void QuadraticCurveTo(double cpx, double cpy, double x, double y);
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void BezierCurveTo(double cp1x, double cp1y, double cp2x, double cp2y,
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double x, double y);
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void ArcTo(double x1, double y1, double x2, double y2, double radius,
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ErrorResult& error);
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void Rect(double x, double y, double w, double h);
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void Arc(double x, double y, double radius, double startAngle,
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double endAngle, bool anticlockwise, ErrorResult& error);
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void Ellipse(double x, double y, double radiusX, double radiusY,
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double rotation, double startAngle, double endAngle,
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bool anticlockwise, ErrorResult& error);
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void LineTo(const gfx::Point& aPoint);
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void BezierTo(const gfx::Point& aCP1, const gfx::Point& aCP2,
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const gfx::Point& aCP3);
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already_AddRefed<gfx::Path> GetPath(const CanvasWindingRule& aWinding,
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const gfx::DrawTarget* aTarget) const;
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explicit CanvasPath(nsISupports* aParent);
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// already_AddRefed arg because the return value from Path::CopyToBuilder()
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// is passed directly and we can't drop the only ref to have a raw pointer.
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CanvasPath(nsISupports* aParent,
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already_AddRefed<gfx::PathBuilder> aPathBuilder);
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void AddPath(CanvasPath& aCanvasPath, const DOMMatrix2DInit& aInit,
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ErrorResult& aError);
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private:
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virtual ~CanvasPath() = default;
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nsCOMPtr<nsISupports> mParent;
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static gfx::Float ToFloat(double aValue) { return gfx::Float(aValue); }
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mutable RefPtr<gfx::Path> mPath;
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mutable RefPtr<gfx::PathBuilder> mPathBuilder;
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void EnsurePathBuilder() const;
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};
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} // namespace dom
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} // namespace mozilla
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#endif /* CanvasPath_h */
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