1 files changed, 64 insertions, 0 deletions
diff --git a/layout/svg/nsCSSClipPathInstance.h b/layout/svg/nsCSSClipPathInstance.h
new file mode 100644
index 000000000..3b0724dbd
--- /dev/null
+++ b/layout/svg/nsCSSClipPathInstance.h
@@ -0,0 +1,64 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 __NS_CSSCLIPPATHINSTANCE_H__
+#define __NS_CSSCLIPPATHINSTANCE_H__
+
+#include "nsStyleStruct.h"
+#include "nsRect.h"
+#include "mozilla/gfx/2D.h"
+
+class nsIFrame;
+class nsRenderingContext;
+
+namespace mozilla {
+
+class nsCSSClipPathInstance
+{
+  typedef mozilla::gfx::DrawTarget DrawTarget;
+  typedef mozilla::gfx::Path Path;
+
+public:
+  static void ApplyBasicShapeClip(gfxContext& aContext,
+                                  nsIFrame* aFrame);
+  // aPoint is in CSS pixels.
+  static bool HitTestBasicShapeClip(nsIFrame* aFrame,
+                                    const gfxPoint& aPoint);
+private:
+  explicit nsCSSClipPathInstance(nsIFrame* aFrame,
+                                 const StyleClipPath aClipPathStyle)
+    : mTargetFrame(aFrame)
+    , mClipPathStyle(aClipPathStyle)
+  {
+  }
+
+  already_AddRefed<Path> CreateClipPath(DrawTarget* aDrawTarget);
+
+  already_AddRefed<Path> CreateClipPathCircle(DrawTarget* aDrawTarget,
+                                              const nsRect& aRefBox);
+
+  already_AddRefed<Path> CreateClipPathEllipse(DrawTarget* aDrawTarget,
+                                               const nsRect& aRefBox);
+
+  already_AddRefed<Path> CreateClipPathPolygon(DrawTarget* aDrawTarget,
+                                               const nsRect& aRefBox);
+
+  already_AddRefed<Path> CreateClipPathInset(DrawTarget* aDrawTarget,
+                                             const nsRect& aRefBox);
+
+
+  nsRect ComputeHTMLReferenceRect();
+  nsRect ComputeSVGReferenceRect();
+
+  /**
+   * The frame for the element that is currently being clipped.
+   */
+  nsIFrame* mTargetFrame;
+  StyleClipPath mClipPathStyle;
+};
+
+} // namespace mozilla
+
+#endif