1 /*
2  * Copyright 2010 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 #include "GrFixedClip.h"
9 
10 #include "GrAppliedClip.h"
11 #include "GrRenderTargetContext.h"
12 
13 bool GrFixedClip::quickContains(const SkRect& rect) const {
14     if (fWindowRectsState.enabled()) {
15         return false;
16     }
17     return !fScissorState.enabled() || GrClip::IsInsideClip(fScissorState.rect(), rect);
18 }
19 
20 void GrFixedClip::getConservativeBounds(int w, int h, SkIRect* devResult, bool* iior) const {
21     devResult->setXYWH(0, 0, w, h);
22     if (fScissorState.enabled()) {
23         if (!devResult->intersect(fScissorState.rect())) {
24             devResult->setEmpty();
25         }
26     }
27     if (iior) {
28         *iior = true;
29     }
30 }
31 
32 bool GrFixedClip::isRRect(const SkRect& rtBounds, SkRRect* rr, GrAA* aa) const {
33     if (fWindowRectsState.enabled()) {
34         return false;
35     }
36     if (fScissorState.enabled()) {
37         SkRect rect = SkRect::Make(fScissorState.rect());
38         if (!rect.intersects(rtBounds)) {
39             return false;
40         }
41         rr->setRect(rect);
42         *aa = GrAA::kNo;
43         return true;
44     }
45     return false;
46 };
47 
48 bool GrFixedClip::apply(int rtWidth, int rtHeight, GrAppliedHardClip* out, SkRect* bounds) const {
49     if (fScissorState.enabled()) {
50         SkIRect tightScissor = SkIRect::MakeWH(rtWidth, rtHeight);
51         if (!tightScissor.intersect(fScissorState.rect())) {
52             return false;
53         }
54         if (IsOutsideClip(tightScissor, *bounds)) {
55             return false;
56         }
57         if (!IsInsideClip(fScissorState.rect(), *bounds)) {
58             out->addScissor(tightScissor, bounds);
59         }
60     }
61 
62     if (fWindowRectsState.enabled()) {
63         out->addWindowRectangles(fWindowRectsState);
64     }
65 
66     return true;
67 }
68 
69 const GrFixedClip& GrFixedClip::Disabled() {
70     static const GrFixedClip disabled = GrFixedClip();
71     return disabled;
72 }
73