Add GrContextThreadSafeProxy and remove most friends of GrContextThreadSafeProxy

A step towards removing GrCaps from GrContext.h

Also adds operator== to GrContextThreadSafeProxy.

Change-Id: Ic0bae12299dfb0ac8817d9f1c56a1219d6df97d9
Reviewed-on: https://skia-review.googlesource.com/127329
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/src/gpu/GrContextThreadSafeProxyPriv.h b/src/gpu/GrContextThreadSafeProxyPriv.h
new file mode 100644
index 0000000000..8e299c8180
--- /dev/null
+++ b/src/gpu/GrContextThreadSafeProxyPriv.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2018 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrContextThreadSafeProxyPriv_DEFINED
+#define GrContextThreadSafeProxyPriv_DEFINED
+
+#include "GrContext.h"
+
+/**
+ * Class that adds methods to GrContextThreadSafeProxy that are only intended for use internal to
+ * Skia. This class is purely a privileged window into GrContextThreadSafeProxy. It should never
+ * have additional data members or virtual methods.
+ */
+class GrContextThreadSafeProxyPriv {
+public:
+    const GrContextOptions& contextOptions() { return fProxy->fOptions; }
+
+    const GrCaps* caps() const { return fProxy->fCaps.get(); }
+    sk_sp<const GrCaps> refCaps() const { return fProxy->fCaps; }
+    uint32_t contextUniqueID() const { return fProxy->fContextUniqueID; }
+    GrBackend backend() const { return fProxy->fBackend; }
+
+private:
+    explicit GrContextThreadSafeProxyPriv(GrContextThreadSafeProxy* proxy) : fProxy(proxy) {}
+    GrContextThreadSafeProxyPriv(const GrContextThreadSafeProxy&) = delete;
+    GrContextThreadSafeProxyPriv& operator=(const GrContextThreadSafeProxyPriv&) = delete;
+
+    // No taking addresses of this type.
+    const GrContextThreadSafeProxyPriv* operator&() const = delete;
+    GrContextThreadSafeProxyPriv* operator&() = delete;
+
+    GrContextThreadSafeProxy* fProxy;
+
+    friend class GrContextThreadSafeProxy;  // to construct/copy this type.
+};
+
+inline GrContextThreadSafeProxyPriv GrContextThreadSafeProxy::priv() {
+    return GrContextThreadSafeProxyPriv(this);
+}
+
+inline const GrContextThreadSafeProxyPriv GrContextThreadSafeProxy::priv() const {
+    return GrContextThreadSafeProxyPriv(const_cast<GrContextThreadSafeProxy*>(this));
+}
+
+#endif