1 files changed, 80 insertions, 0 deletions
diff --git a/include/gpu/GrClipIterator.h b/include/gpu/GrClipIterator.h
new file mode 100644
index 0000000000..4a5cc7135f
--- /dev/null
+++ b/include/gpu/GrClipIterator.h
@@ -0,0 +1,80 @@
+
+/*
+ * Copyright 2010 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+
+
+#ifndef GrClipIterator_DEFINED
+#define GrClipIterator_DEFINED
+
+#include "GrPath.h"
+#include "GrRect.h"
+
+/**
+ * A clip is a list of paths and/or rects with set operations to combine them.
+ */
+class GrClipIterator {
+public:
+    virtual ~GrClipIterator() {}
+
+    /**
+     *  Returns true if there are no more rects to process
+     */
+    virtual bool isDone() const = 0;
+
+    /**
+     *  Rewind the iterator to replay the set of clip elements again
+     */
+    virtual void rewind() = 0;
+
+    /**
+     * Get the type of the current clip element
+     */
+    virtual GrClipType getType() const = 0;
+
+    /**
+     * Return the current path. It is an error to call this when isDone() is
+     * true or when getType() is kRect_Type.
+     */
+    virtual const GrPath* getPath() = 0;
+
+    /**
+     * Return the fill rule for the path. It is an error to call this when
+     * isDone() is true or when getType is kRect_Type.
+     */
+    virtual GrPathFill getPathFill() const = 0;
+
+    /**
+    * Return the current rect. It is an error to call this when isDone is true
+    * or when getType() is kPath_Type.
+    */
+    virtual void getRect(GrRect* rect) const = 0;
+
+    /**
+     * Gets the operation used to apply the current item to previously iterated
+     * items. Iterators should not produce a Replace op.
+     */
+    virtual GrSetOp getOp() const = 0;
+
+    /**
+     *  Call to move to the next element in the list, previous path iter can be
+     *  made invalid.
+     */
+    virtual void next() = 0;
+};
+
+/**
+ *  Call to rewind iter, first checking to see if iter is NULL
+ */
+static inline void GrSafeRewind(GrClipIterator* iter) {
+    if (iter) {
+        iter->rewind();
+    }
+}
+
+#endif
+