1 files changed, 37 insertions, 0 deletions
diff --git a/gfx/skia/skia/src/core/SkCubicClipper.h b/gfx/skia/skia/src/core/SkCubicClipper.h
new file mode 100644
index 0000000000..328d63b8b8
--- /dev/null
+++ b/gfx/skia/skia/src/core/SkCubicClipper.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright 2009 The Android Open Source Project
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+#ifndef SkCubicClipper_DEFINED
+#define SkCubicClipper_DEFINED
+
+#include "include/core/SkRect.h"
+#include "include/core/SkScalar.h"
+#include "include/core/SkTypes.h"
+
+struct SkPoint;
+
+/** This class is initialized with a clip rectangle, and then can be fed cubics,
+    which must already be monotonic in Y.
+
+    In the future, it might return a series of segments, allowing it to clip
+    also in X, to ensure that all segments fit in a finite coordinate system.
+ */
+class SkCubicClipper {
+public:
+    SkCubicClipper();
+
+    void setClip(const SkIRect& clip);
+
+    bool SK_WARN_UNUSED_RESULT clipCubic(const SkPoint src[4], SkPoint dst[4]);
+
+    static bool SK_WARN_UNUSED_RESULT ChopMonoAtY(const SkPoint pts[4], SkScalar y, SkScalar* t);
+private:
+    SkRect      fClip;
+};
+
+#endif  // SkCubicClipper_DEFINED