Apply intersect rects to earlier clip elements and skip rects when possible.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6814105

git-svn-id: http://skia.googlecode.com/svn/trunk@6351 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 10 insertions, 0 deletions

diff --git a/include/core/SkClipStack.h b/include/core/SkClipStack.h
index 443e6ad7d9..b420c9a7bd 100644
--- a/include/core/SkClipStack.h
+++ b/include/core/SkClipStack.h
@@ -138,6 +138,10 @@ public:
              * Gets the bounds of the clip element, either the rect or path bounds.
              */
             const SkRect& getBounds() const;
+            /** 
+             * Returns true if the clip element is a path that is inverse filled
+             */
+            bool isInverseFilled() const;
 
             const SkRect*   fRect;  // if non-null, this is a rect clip
             const SkPath*   fPath;  // if non-null, this is a path clip
@@ -174,6 +178,12 @@ public:
         const Clip* skipToTopmost(SkRegion::Op op);
 
         /**
+         * Moves forward to the next clip element that uses op. If no clip with that op is found,
+         * returns NULL.
+         */
+        const Clip* skipToNext(SkRegion::Op op);
+
+        /**
          * Restarts the iterator on a clip stack.
          */
         void reset(const SkClipStack& stack, IterStart startLoc);