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. */
16class GrRenderTargetPriv {
17public:
18    /**
19     * GrStencilAttachment is not part of the public API.
20     */
21    GrStencilAttachment* getStencilAttachment() const { return fRenderTarget->fStencilAttachment; }
22
23    /**
24     * If this render target already has a stencil buffer, return it. Otherwise attempt to attach
25     * one.
26     */
27    GrStencilAttachment* attachStencilAttachment() const;
28
29    void didAttachStencilAttachment(GrStencilAttachment*);
30
31private:
32    explicit GrRenderTargetPriv(GrRenderTarget* renderTarget) : fRenderTarget(renderTarget) {}
33    GrRenderTargetPriv(const GrRenderTargetPriv&) {} // unimpl
34    GrRenderTargetPriv& operator=(const GrRenderTargetPriv&); // unimpl
35
36    // No taking addresses of this type.
37    const GrRenderTargetPriv* operator&() const;
38    GrRenderTargetPriv* operator&();
39
40    GrRenderTarget* fRenderTarget;
41
42    friend class GrRenderTarget; // to construct/copy this type.
43};
44
45inline GrRenderTargetPriv GrRenderTarget::renderTargetPriv() { return GrRenderTargetPriv(this); }
46
47inline const GrRenderTargetPriv GrRenderTarget::renderTargetPriv () const {
48    return GrRenderTargetPriv(const_cast<GrRenderTarget*>(this));
49}
50
51#endif
52