1/*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef GrScissorState_DEFINED
9#define GrScissorState_DEFINED
10
11#include "include/core/SkRect.h"
12
13class GrScissorState {
14public:
15 GrScissorState() : fEnabled(false) {}
16 GrScissorState(const SkIRect& rect) : fEnabled(true), fRect(rect) {}
17 void setDisabled() { fEnabled = false; }
18 void set(const SkIRect& rect) { fRect = rect; fEnabled = true; }
19 bool SK_WARN_UNUSED_RESULT intersect(const SkIRect& rect) {
20 if (!fEnabled) {
21 this->set(rect);
22 return true;
23 }
24 return fRect.intersect(rect);
25 }
26 bool operator==(const GrScissorState& other) const {
27 return fEnabled == other.fEnabled &&
28 (false == fEnabled || fRect == other.fRect);
29 }
30 bool operator!=(const GrScissorState& other) const { return !(*this == other); }
31
32 bool enabled() const { return fEnabled; }
33 const SkIRect& rect() const {
34 SkASSERT(fEnabled);
35 return fRect;
36 }
37
38private:
39 bool fEnabled;
40 SkIRect fRect;
41};
42
43#endif
44