6f8f292aa7
used for interpreting the clipstack when a device is a layer git-svn-id: http://skia.googlecode.com/svn/trunk@894 2bbb7eff-a529-9590-31e7-b0007b416f81
104 lines
2.8 KiB
C++
104 lines
2.8 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 GrPath_DEFINED
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#define GrPath_DEFINED
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#include "GrPathSink.h"
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#include "GrPathIter.h"
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#include "GrTDArray.h"
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#include "GrPoint.h"
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class GrPath : public GrPathSink {
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public:
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GrPath();
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GrPath(const GrPath&);
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explicit GrPath(GrPathIter&);
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virtual ~GrPath();
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GrConvexHint getConvexHint() const { return fConvexHint; }
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void setConvexHint(GrConvexHint hint) { fConvexHint = hint; }
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void resetFromIter(GrPathIter*);
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bool operator ==(const GrPath& path) const;
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bool operator !=(const GrPath& path) const { return !(*this == path); }
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// overrides from GrPathSink
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virtual void moveTo(GrScalar x, GrScalar y);
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virtual void lineTo(GrScalar x, GrScalar y);
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virtual void quadTo(GrScalar x0, GrScalar y0, GrScalar x1, GrScalar y1);
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virtual void cubicTo(GrScalar x0, GrScalar y0, GrScalar x1, GrScalar y1,
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GrScalar x2, GrScalar y2);
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virtual void close();
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/**
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* Offset the path by (tx, ty), adding tx to the horizontal position
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* and adds ty to the vertical position of every point.
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*/
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void offset(GrScalar tx, GrScalar ty);
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class Iter : public GrPathIter {
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public:
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/**
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* Creates an uninitialized iterator
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*/
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Iter();
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Iter(const GrPath& path);
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// overrides from GrPathIter
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virtual GrPathCmd next(GrPoint points[]);
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virtual GrConvexHint convexHint() const;
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virtual GrPathCmd next();
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virtual void rewind();
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/**
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* Sets iterator to begining of path
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*/
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void reset(const GrPath& path);
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private:
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const GrPath* fPath;
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GrPoint fLastPt;
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int fCmdIndex;
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int fPtIndex;
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};
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static void ConvexUnitTest();
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private:
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GrTDArray<GrPathCmd> fCmds;
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GrTDArray<GrPoint> fPts;
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GrConvexHint fConvexHint;
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// this ensures we have a moveTo at the start of each contour
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inline void ensureMoveTo();
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bool wasLastVerb(GrPathCmd cmd) const {
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int count = fCmds.count();
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return count > 0 && cmd == fCmds[count - 1];
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}
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friend class Iter;
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typedef GrPathSink INHERITED;
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};
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#endif
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