summaryrefslogtreecommitdiffstats
path: root/dom/canvas/CanvasPath.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/canvas/CanvasPath.h')
-rw-r--r--dom/canvas/CanvasPath.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/dom/canvas/CanvasPath.h b/dom/canvas/CanvasPath.h
new file mode 100644
index 0000000000..ac744a251b
--- /dev/null
+++ b/dom/canvas/CanvasPath.h
@@ -0,0 +1,92 @@
+/* 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;
+
+ void EnsurePathBuilder() const;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif /* CanvasPath_h */