1
2/*
3 * Copyright 2010 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9
10
11#ifndef GrClip_DEFINED
12#define GrClip_DEFINED
13
14#include "GrRect.h"
15#include "SkClipStack.h"
16
17class GrSurface;
18
19/**
20 * GrClipData encapsulates the information required to construct the clip
21 * masks. 'fOrigin' is only non-zero when saveLayer has been called
22 * with an offset bounding box. The clips in 'fClipStack' are in
23 * device coordinates (i.e., they have been translated by -fOrigin w.r.t.
24 * the canvas' device coordinates).
25 */
26class GrClipData : public SkNoncopyable {
27public:
28    const SkClipStack*  fClipStack;
29    SkIPoint            fOrigin;
30
31    GrClipData()
32        : fClipStack(NULL) {
33        fOrigin.setZero();
34    }
35
36    bool operator==(const GrClipData& other) const {
37        if (fOrigin != other.fOrigin) {
38            return false;
39        }
40
41        if (NULL != fClipStack && NULL != other.fClipStack) {
42            return *fClipStack == *other.fClipStack;
43        }
44
45        return fClipStack == other.fClipStack;
46    }
47
48    bool operator!=(const GrClipData& other) const {
49        return !(*this == other);
50    }
51
52    void getConservativeBounds(const GrSurface* surface,
53                               GrIRect* devResult,
54                               bool* isIntersectionOfRects = NULL) const;
55};
56
57#endif
58