Switch GrConfigConversionEffect over to taking GrTextureProxies

Change-Id: Ic8be773e210e1ac05dcb9aad6c89dcd63e9e4ba2
Reviewed-on: https://skia-review.googlesource.com/7521
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/src/gpu/GrSurfaceProxyPriv.h b/src/gpu/GrSurfaceProxyPriv.h
new file mode 100644
index 0000000000..19b81712e1
--- /dev/null
+++ b/src/gpu/GrSurfaceProxyPriv.h
@@ -0,0 +1,43 @@
+/*
+ * 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 GrSurfaceProxyPriv_DEFINED
+#define GrSurfaceProxyPriv_DEFINED
+
+#include "GrSurfaceProxy.h"
+
+/** Class that adds methods to GrSurfaceProxy that are only intended for use internal to Skia.
+    This class is purely a privileged window into GrSurfaceProxy. It should never have additional
+    data members or virtual methods. */
+class GrSurfaceProxyPriv {
+public:
+    // Beware! This call is only guaranteed to tell you if the proxy in question has
+    // any pending IO in its current state. It won't tell you about the IO state in the
+    // future when the proxy is actually used/instantiated.
+    bool hasPendingIO() const { return fProxy->hasPendingIO(); }
+
+private:
+    explicit GrSurfaceProxyPriv(GrSurfaceProxy* proxy) : fProxy(proxy) {}
+    GrSurfaceProxyPriv(const GrSurfaceProxyPriv&) {} // unimpl
+    GrSurfaceProxyPriv& operator=(const GrSurfaceProxyPriv&); // unimpl
+
+    // No taking addresses of this type.
+    const GrSurfaceProxyPriv* operator&() const;
+    GrSurfaceProxyPriv* operator&();
+
+    GrSurfaceProxy* fProxy;
+
+    friend class GrSurfaceProxy; // to construct/copy this type.
+};
+
+inline GrSurfaceProxyPriv GrSurfaceProxy::priv() { return GrSurfaceProxyPriv(this); }
+
+inline const GrSurfaceProxyPriv GrSurfaceProxy::priv () const {
+    return GrSurfaceProxyPriv(const_cast<GrSurfaceProxy*>(this));
+}
+
+#endif