115d931d2f
we were defaulting to intersect all the time (doh). git-svn-id: http://skia.googlecode.com/svn/trunk@3980 2bbb7eff-a529-9590-31e7-b0007b416f81
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
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/*
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* Copyright 2011 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 SkClipStack_DEFINED
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#define SkClipStack_DEFINED
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#include "SkDeque.h"
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#include "SkRegion.h"
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struct SkRect;
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class SkPath;
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class SK_API SkClipStack {
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public:
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SkClipStack();
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SkClipStack(const SkClipStack& b);
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~SkClipStack();
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SkClipStack& operator=(const SkClipStack& b);
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bool operator==(const SkClipStack& b) const;
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bool operator!=(const SkClipStack& b) const { return !(*this == b); }
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void reset();
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int getSaveCount() const { return fSaveCount; }
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void save();
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void restore();
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void clipDevRect(const SkIRect& ir, SkRegion::Op op) {
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SkRect r;
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r.set(ir);
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this->clipDevRect(r, op, false);
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}
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void clipDevRect(const SkRect&, SkRegion::Op, bool doAA);
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void clipDevPath(const SkPath&, SkRegion::Op, bool doAA);
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class B2FIter {
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public:
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/**
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* Creates an uninitialized iterator. Must be reset()
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*/
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B2FIter();
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B2FIter(const SkClipStack& stack);
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struct Clip {
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Clip() : fRect(NULL), fPath(NULL), fOp(SkRegion::kIntersect_Op),
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fDoAA(false) {}
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friend bool operator==(const Clip& a, const Clip& b);
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friend bool operator!=(const Clip& a, const Clip& b);
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const SkRect* fRect; // if non-null, this is a rect clip
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const SkPath* fPath; // if non-null, this is a path clip
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SkRegion::Op fOp;
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bool fDoAA;
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};
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/**
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* Return the clip for this element in the iterator. If next() returns
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* NULL, then the iterator is done. The type of clip is determined by
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* the pointers fRect and fPath:
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*
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* fRect==NULL fPath!=NULL path clip
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* fRect!=NULL fPath==NULL rect clip
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* fRect==NULL fPath==NULL empty clip
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*/
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const Clip* next();
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/**
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* Restarts the iterator on a clip stack.
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*/
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void reset(const SkClipStack& stack);
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private:
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Clip fClip;
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SkDeque::F2BIter fIter;
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};
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private:
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friend class B2FIter;
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struct Rec;
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SkDeque fDeque;
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int fSaveCount;
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};
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#endif
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