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/* 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 CanvasPath_h
#define CanvasPath_h
#include "mozilla/Attributes.h"
#include "mozilla/RefPtr.h"
#include "nsWrapperCache.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/dom/BindingDeclarations.h"
namespace mozilla {
class ErrorResult;
namespace dom {
enum class CanvasWindingRule : uint8_t;
struct DOMMatrix2DInit;
class
UnrestrictedDoubleOrDOMPointInitOrUnrestrictedDoubleOrDOMPointInitSequence;
class CanvasPath final : public nsWrapperCache {
public:
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(CanvasPath)
NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(CanvasPath)
nsISupports* GetParentObject() { return mParent; }
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
static already_AddRefed<CanvasPath> Constructor(const GlobalObject& aGlobal);
static already_AddRefed<CanvasPath> Constructor(const GlobalObject& aGlobal,
CanvasPath& aCanvasPath);
static already_AddRefed<CanvasPath> Constructor(const GlobalObject& aGlobal,
const nsAString& aPathString);
void ClosePath();
void MoveTo(double x, double y);
void LineTo(double x, double y);
void QuadraticCurveTo(double cpx, double cpy, double x, double y);
void BezierCurveTo(double cp1x, double cp1y, double cp2x, double cp2y,
double x, double y);
void ArcTo(double x1, double y1, double x2, double y2, double radius,
ErrorResult& error);
void Rect(double x, double y, double w, double h);
void RoundRect(
double aX, double aY, double aW, double aH,
const UnrestrictedDoubleOrDOMPointInitOrUnrestrictedDoubleOrDOMPointInitSequence&
aRadii,
ErrorResult& aError);
void Arc(double x, double y, double radius, double startAngle,
double endAngle, bool anticlockwise, ErrorResult& error);
void Ellipse(double x, double y, double radiusX, double radiusY,
double rotation, double startAngle, double endAngle,
bool anticlockwise, ErrorResult& error);
void LineTo(const gfx::Point& aPoint);
void BezierTo(const gfx::Point& aCP1, const gfx::Point& aCP2,
const gfx::Point& aCP3);
already_AddRefed<gfx::Path> GetPath(const CanvasWindingRule& aWinding,
const gfx::DrawTarget* aTarget) const;
explicit CanvasPath(nsISupports* aParent);
// already_AddRefed arg because the return value from Path::CopyToBuilder()
// is passed directly and we can't drop the only ref to have a raw pointer.
CanvasPath(nsISupports* aParent,
already_AddRefed<gfx::PathBuilder> aPathBuilder);
void AddPath(CanvasPath& aCanvasPath, const DOMMatrix2DInit& aInit,
ErrorResult& aError);
private:
virtual ~CanvasPath() = default;
nsCOMPtr<nsISupports> mParent;
static gfx::Float ToFloat(double aValue) { return gfx::Float(aValue); }
mutable RefPtr<gfx::Path> mPath;
mutable RefPtr<gfx::PathBuilder> mPathBuilder;
// Whether an internal segment was zero-length.
mutable bool mPruned = false;
void EnsurePathBuilder() const;
void EnsureCapped() const;
void EnsureActive() const;
};
} // namespace dom
} // namespace mozilla
#endif /* CanvasPath_h */
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