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     * 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
30private:
31    explicit GrRenderTargetPriv(GrRenderTarget* renderTarget) : fRenderTarget(renderTarget) {}
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
44inline GrRenderTargetPriv GrRenderTarget::renderTargetPriv() { return GrRenderTargetPriv(this); }
45
46inline const GrRenderTargetPriv GrRenderTarget::renderTargetPriv () const {
47    return GrRenderTargetPriv(const_cast<GrRenderTarget*>(this));
48}
49
50#endif
51