skia2/include/core/SkClipStack.h
ctguil@chromium.org 7ffb1b21ab Add code needed to build skia as a windows dll within the chromium project.
- Export/import skia APIs if SKIA_DLL is defined.
- This change has no effect on skia.

Review URL: http://codereview.appspot.com/4282042

git-svn-id: http://skia.googlecode.com/svn/trunk@944 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-03-15 21:27:08 +00:00

76 lines
1.7 KiB
C++

#ifndef SkClipStack_DEFINED
#define SkClipStack_DEFINED
#include "SkDeque.h"
#include "SkRegion.h"
struct SkRect;
class SkPath;
class SK_API SkClipStack {
public:
SkClipStack();
~SkClipStack() {}
void reset();
int getSaveCount() const { return fSaveCount; }
void save();
void restore();
void clipDevRect(const SkIRect& ir,
SkRegion::Op op = SkRegion::kIntersect_Op) {
SkRect r;
r.set(ir);
this->clipDevRect(r, op);
}
void clipDevRect(const SkRect&, SkRegion::Op = SkRegion::kIntersect_Op);
void clipDevPath(const SkPath&, SkRegion::Op = SkRegion::kIntersect_Op);
class B2FIter {
public:
/**
* Creates an uninitialized iterator. Must be reset()
*/
B2FIter();
B2FIter(const SkClipStack& stack);
struct Clip {
const SkRect* fRect; // if non-null, this is a rect clip
const SkPath* fPath; // if non-null, this is a path clip
SkRegion::Op fOp;
};
/**
* Return the clip for this element in the iterator. If next() returns
* NULL, then the iterator is done. The type of clip is determined by
* the pointers fRect and fPath:
*
* fRect==NULL fPath!=NULL path clip
* fRect!=NULL fPath==NULL rect clip
* fRect==NULL fPath==NULL empty clip
*/
const Clip* next();
/**
* Restarts the iterator on a clip stack.
*/
void reset(const SkClipStack& stack);
private:
Clip fClip;
SkDeque::F2BIter fIter;
};
private:
friend class B2FIter;
struct Rec;
SkDeque fDeque;
int fSaveCount;
};
#endif