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 GrFixedClip_DEFINED
9 #define GrFixedClip_DEFINED
10 
11 #include "GrClip.h"
12 #include "GrScissorState.h"
13 #include "GrWindowRectsState.h"
14 
15 /**
16  * Implements GrHardClip with scissor and window rectangles.
17  */
18 class GrFixedClip final : public GrHardClip {
19 public:
20     GrFixedClip() = default;
21     explicit GrFixedClip(const SkIRect& scissorRect) : fScissorState(scissorRect) {}
22 
23     const GrScissorState& scissorState() const { return fScissorState; }
24     bool scissorEnabled() const { return fScissorState.enabled(); }
25     const SkIRect& scissorRect() const { SkASSERT(scissorEnabled()); return fScissorState.rect(); }
26 
27     void disableScissor() { fScissorState.setDisabled(); }
28 
29     void setScissor(const SkIRect& irect) {
30         fScissorState.set(irect);
31     }
32     bool SK_WARN_UNUSED_RESULT intersect(const SkIRect& irect) {
33         return fScissorState.intersect(irect);
34     }
35 
36     const GrWindowRectsState& windowRectsState() const { return fWindowRectsState; }
37     bool hasWindowRectangles() const { return fWindowRectsState.enabled(); }
38 
39     void disableWindowRectangles() { fWindowRectsState.setDisabled(); }
40 
41     void setWindowRectangles(const GrWindowRectangles& windows, GrWindowRectsState::Mode mode) {
42         fWindowRectsState.set(windows, mode);
43     }
44 
45     bool quickContains(const SkRect&) const override;
46     void getConservativeBounds(int w, int h, SkIRect* devResult, bool* iior) const override;
47     bool isRRect(const SkRect& rtBounds, SkRRect* rr, GrAA*) const override;
48     bool apply(int rtWidth, int rtHeight, GrAppliedHardClip*, SkRect*) const override;
49 
50     static const GrFixedClip& Disabled();
51 
52 private:
53     GrScissorState       fScissorState;
54     GrWindowRectsState   fWindowRectsState;
55 };
56 
57 #endif
58