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      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