1 files changed, 114 insertions, 0 deletions
diff --git a/gfx/2d/PathCapture.h b/gfx/2d/PathCapture.h
new file mode 100644
index 0000000000..8237c661d3
--- /dev/null
+++ b/gfx/2d/PathCapture.h
@@ -0,0 +1,114 @@
+/* -*- 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 MOZILLA_GFX_PATHCAPTURE_H_
+#define MOZILLA_GFX_PATHCAPTURE_H_
+
+#include "2D.h"
+#include <vector>
+#include <ostream>
+
+#include "PathHelpers.h"
+
+namespace mozilla {
+namespace gfx {
+
+class PathCapture;
+
+class PathBuilderCapture : public PathBuilder {
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathBuilderCapture, override)
+
+  PathBuilderCapture(FillRule aFillRule, DrawTarget* aDT)
+      : mFillRule(aFillRule), mDT(aDT) {}
+
+  /* Move the current point in the path, any figure currently being drawn will
+   * be considered closed during fill operations, however when stroking the
+   * closing line segment will not be drawn.
+   */
+  virtual void MoveTo(const Point& aPoint) override;
+  /* Add a linesegment to the current figure */
+  virtual void LineTo(const Point& aPoint) override;
+  /* Add a cubic bezier curve to the current figure */
+  virtual void BezierTo(const Point& aCP1, const Point& aCP2,
+                        const Point& aCP3) override;
+  /* Add a quadratic bezier curve to the current figure */
+  virtual void QuadraticBezierTo(const Point& aCP1, const Point& aCP2) override;
+  /* Add an arc to the current figure */
+  virtual void Arc(const Point& aOrigin, float aRadius, float aStartAngle,
+                   float aEndAngle, bool aAntiClockwise) override;
+  /* Close the current figure, this will essentially generate a line segment
+   * from the current point to the starting point for the current figure
+   */
+  virtual void Close() override;
+
+  virtual already_AddRefed<Path> Finish() override;
+
+  virtual BackendType GetBackendType() const override {
+    return BackendType::CAPTURE;
+  }
+
+ private:
+  friend class PathCapture;
+
+  FillRule mFillRule;
+  std::vector<PathOp> mPathOps;
+  RefPtr<DrawTarget> mDT;
+};
+
+class PathCapture : public Path {
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(PathCapture, override)
+
+  PathCapture(const std::vector<PathOp> aOps, FillRule aFillRule,
+              DrawTarget* aDT, const Point& aCurrentPoint,
+              const Point& aBeginPoint)
+      : mPathOps(aOps),
+        mFillRule(aFillRule),
+        mDT(aDT),
+        mCurrentPoint(aCurrentPoint),
+        mBeginPoint(aBeginPoint) {}
+
+  virtual BackendType GetBackendType() const override {
+    return BackendType::CAPTURE;
+  }
+  virtual already_AddRefed<PathBuilder> CopyToBuilder(
+      FillRule aFillRule) const override;
+  virtual already_AddRefed<PathBuilder> TransformedCopyToBuilder(
+      const Matrix& aTransform, FillRule aFillRule) const override;
+  virtual bool ContainsPoint(const Point& aPoint,
+                             const Matrix& aTransform) const override;
+  virtual bool StrokeContainsPoint(const StrokeOptions& aStrokeOptions,
+                                   const Point& aPoint,
+                                   const Matrix& aTransform) const override;
+
+  virtual Rect GetBounds(const Matrix& aTransform = Matrix()) const override;
+
+  virtual Rect GetStrokedBounds(
+      const StrokeOptions& aStrokeOptions,
+      const Matrix& aTransform = Matrix()) const override;
+
+  virtual void StreamToSink(PathSink* aSink) const override;
+
+  virtual FillRule GetFillRule() const override { return mFillRule; }
+
+  Path* GetRealizedPath() const;
+
+ private:
+  bool EnsureRealizedPath() const;
+
+  mutable RefPtr<Path> mRealizedPath;
+  std::vector<PathOp> mPathOps;
+  FillRule mFillRule;
+  RefPtr<DrawTarget> mDT;
+  Point mCurrentPoint;
+  Point mBeginPoint;
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif /* MOZILLA_GFX_PATHCAPTURE_H_ */