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/*
* 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
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