5aaa69e433
Review URL http://codereview.appspot.com/4250056/ git-svn-id: http://skia.googlecode.com/svn/trunk@891 2bbb7eff-a529-9590-31e7-b0007b416f81
88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
/*
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Copyright 2010 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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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 GrPathIter* getPathIter() = 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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