michael@0: /*
michael@0:  * Copyright 2010 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef GrClip_DEFINED
michael@0: #define GrClip_DEFINED
michael@0: 
michael@0: #include "SkClipStack.h"
michael@0: 
michael@0: class GrSurface;
michael@0: struct SkIRect;
michael@0: 
michael@0: /**
michael@0:  * GrClipData encapsulates the information required to construct the clip
michael@0:  * masks. 'fOrigin' is only non-zero when saveLayer has been called
michael@0:  * with an offset bounding box. The clips in 'fClipStack' are in
michael@0:  * device coordinates (i.e., they have been translated by -fOrigin w.r.t.
michael@0:  * the canvas' device coordinates).
michael@0:  */
michael@0: class GrClipData : public SkNoncopyable {
michael@0: public:
michael@0:     const SkClipStack*  fClipStack;
michael@0:     SkIPoint            fOrigin;
michael@0: 
michael@0:     GrClipData()
michael@0:         : fClipStack(NULL) {
michael@0:         fOrigin.setZero();
michael@0:     }
michael@0: 
michael@0:     bool operator==(const GrClipData& other) const {
michael@0:         if (fOrigin != other.fOrigin) {
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         if (NULL != fClipStack && NULL != other.fClipStack) {
michael@0:             return *fClipStack == *other.fClipStack;
michael@0:         }
michael@0: 
michael@0:         return fClipStack == other.fClipStack;
michael@0:     }
michael@0: 
michael@0:     bool operator!=(const GrClipData& other) const {
michael@0:         return !(*this == other);
michael@0:     }
michael@0: 
michael@0:     void getConservativeBounds(const GrSurface* surface,
michael@0:                                SkIRect* devResult,
michael@0:                                bool* isIntersectionOfRects = NULL) const;
michael@0: };
michael@0: 
michael@0: #endif