d38f137e9b
Review URL: http://codereview.appspot.com/5250070/ git-svn-id: http://skia.googlecode.com/svn/trunk@2471 2bbb7eff-a529-9590-31e7-b0007b416f81
81 lines
1.8 KiB
C++
81 lines
1.8 KiB
C++
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/*
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* Copyright 2010 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrClipIterator_DEFINED
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#define GrClipIterator_DEFINED
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#include "GrPath.h"
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#include "GrRect.h"
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/**
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* A clip is a list of paths and/or rects with set operations to combine them.
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*/
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class GrClipIterator {
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public:
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virtual ~GrClipIterator() {}
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/**
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* Returns true if there are no more rects to process
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*/
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virtual bool isDone() const = 0;
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/**
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* Rewind the iterator to replay the set of clip elements again
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*/
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virtual void rewind() = 0;
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/**
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* Get the type of the current clip element
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*/
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virtual GrClipType getType() const = 0;
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/**
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* Return the current path. It is an error to call this when isDone() is
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* true or when getType() is kRect_Type.
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*/
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virtual const GrPath* getPath() = 0;
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/**
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* Return the fill rule for the path. It is an error to call this when
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* isDone() is true or when getType is kRect_Type.
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*/
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virtual GrPathFill getPathFill() const = 0;
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/**
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* Return the current rect. It is an error to call this when isDone is true
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* or when getType() is kPath_Type.
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*/
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virtual void getRect(GrRect* rect) const = 0;
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/**
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* Gets the operation used to apply the current item to previously iterated
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* items. Iterators should not produce a Replace op.
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*/
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virtual GrSetOp getOp() const = 0;
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/**
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* Call to move to the next element in the list, previous path iter can be
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* made invalid.
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*/
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virtual void next() = 0;
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};
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/**
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* Call to rewind iter, first checking to see if iter is NULL
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*/
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static inline void GrSafeRewind(GrClipIterator* iter) {
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if (iter) {
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iter->rewind();
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}
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}
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#endif
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