Add GrTextureProxyPriv

Several upcoming additions should go in here

Change-Id: I642f3c7cc36b1e6512ee0170640449e88a666d2c
Reviewed-on: https://skia-review.googlesource.com/52661
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/src/gpu/GrTextureProxyPriv.h b/src/gpu/GrTextureProxyPriv.h
new file mode 100644
index 0000000000..c3ddb9460c
--- /dev/null
+++ b/src/gpu/GrTextureProxyPriv.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2017 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrTextureProxyPriv_DEFINED
+#define GrTextureProxyPriv_DEFINED
+
+#include "GrTextureProxy.h"
+
+/**
+ * This class hides the more specialized capabilities of GrTextureProxy.
+ */
+class GrTextureProxyPriv {
+public:
+
+private:
+    explicit GrTextureProxyPriv(GrTextureProxy* textureProxy) : fTextureProxy(textureProxy) {}
+    GrTextureProxyPriv(const GrTextureProxyPriv&) {} // unimpl
+    GrTextureProxyPriv& operator=(const GrTextureProxyPriv&); // unimpl
+
+    // No taking addresses of this type.
+    const GrTextureProxyPriv* operator&() const;
+    GrTextureProxyPriv* operator&();
+
+    GrTextureProxy* fTextureProxy;
+
+    friend class GrTextureProxy;  // to construct/copy this type.
+};
+
+inline GrTextureProxyPriv GrTextureProxy::texPriv() { return GrTextureProxyPriv(this); }
+
+inline const GrTextureProxyPriv GrTextureProxy::texPriv() const {
+    return GrTextureProxyPriv(const_cast<GrTextureProxy*>(this));
+}
+
+#endif