1 /*
2  * Copyright 2015 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 GrRenderTargetPriv_DEFINED
9 #define GrRenderTargetPriv_DEFINED
10 
11 #include "GrRenderTarget.h"
12 
13 /** Class that adds methods to GrRenderTarget that are only intended for use internal to Skia.
14     This class is purely a privileged window into GrRenderTarget. It should never have additional
15     data members or virtual methods. */
16 class GrRenderTargetPriv {
17 public:
18     /**
19      * GrStencilAttachment is not part of the public API.
20      */
getStencilAttachment()21     GrStencilAttachment* getStencilAttachment() const { return fRenderTarget->fStencilAttachment; }
22 
23     /**
24      * Attaches the GrStencilAttachment onto the render target. If stencil is a nullptr then the
25      * currently attached GrStencilAttachment will be removed if one was previously attached. This
26      * function returns false if there were any failure in attaching the GrStencilAttachment.
27      */
28     bool attachStencilAttachment(GrStencilAttachment* stencil);
29 
30 private:
GrRenderTargetPriv(GrRenderTarget * renderTarget)31     explicit GrRenderTargetPriv(GrRenderTarget* renderTarget) : fRenderTarget(renderTarget) {}
GrRenderTargetPriv(const GrRenderTargetPriv &)32     GrRenderTargetPriv(const GrRenderTargetPriv&) {} // unimpl
33     GrRenderTargetPriv& operator=(const GrRenderTargetPriv&); // unimpl
34 
35     // No taking addresses of this type.
36     const GrRenderTargetPriv* operator&() const;
37     GrRenderTargetPriv* operator&();
38 
39     GrRenderTarget* fRenderTarget;
40 
41     friend class GrRenderTarget; // to construct/copy this type.
42 };
43 
renderTargetPriv()44 inline GrRenderTargetPriv GrRenderTarget::renderTargetPriv() { return GrRenderTargetPriv(this); }
45 
renderTargetPriv()46 inline const GrRenderTargetPriv GrRenderTarget::renderTargetPriv () const {
47     return GrRenderTargetPriv(const_cast<GrRenderTarget*>(this));
48 }
49 
50 #endif
51