Add a factory and defines for native Linux surfaces.

ui/base/ozone/surface_factory_ozone.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef UI_BASE_LINUX_NATIVE_SURFACE_LNUX_FACTORY_
+#define UI_BASE_LINUX_NATIVE_SURFACE_LNUX_FACTORY_

[piman, 2013/05/18 01:47:19]

nit: guard is wrong

[rjkroege, 2013/05/21 17:36:28]

Done.

+
+#include "base/memory/scoped_ptr.h"
+#include  "ui/gfx/native_widget_types.h"
+
+namespace gfx {
+class VSyncProvider;
+} //  namespace gfx
+
+namespace ui {
+
+class SurfaceFactoryDelegate;
+
+template <typename T> struct DefaultSingletonTraits;
+class SurfaceFactory {

[piman, 2013/05/18 01:47:19]

TBH I'm not sure why we have a separate SurfaceFactory and
SurfaceFactoryDelegate. SurfaceFactory isn't functional without a delegate.
They're 1:1, and have the same methods.

Since you need initialization-time code to setup the delegate, you might as well
make SurfaceFactory the interface, and have a couple of static methods to setup
the global factory and to get it.

Lastly, can this be named SurfaceFactoryOzone or something, to indicate it's
specific to that port?

[rjkroege, 2013/05/21 17:36:28]

OK. Done.
Yes. Done.

+ public:
+  SurfaceFactory();
+  ~SurfaceFactory();
+
+  static SurfaceFactory* GetInstance();
+
+  // Returns a display spec as in |CreateDisplayFromSpec| for the default
+  // native surface.
+  const char* DefaultDisplaySpec();
+
+  // Set an optional delegate.
+  void SetDelegate(SurfaceFactoryDelegate* delegate);
+
+  // TODO(rjkroege): Add a status code if necessary.
+  // Configure display hardware. Must be called from within the GPU process
+  // before the sandbox has been activated.
+  void InitializeHardware();
+
+  // Clean up display hardware state. Call this from within the GPU process.
+  // This method must be safe to run inside of the sandbox.
+  void ShutdownHardware();
+
+  // Obtain an AcceleratedWidget backed by a native Linux framebuffer.
+  // The  AcceleratedWidget is valid only in the GPU process.
+  gfx::AcceleratedWidget GetAcceleratedWidget(
+      const gfx::GLSurfaceHandle& handle);
+
+  // Sets up GL bindings for the native surface.
+  bool LoadEGLGLES2Bindings();
+
+  // TODO(rjkroege): do I still need this?
+  // Test if the given AcceleratedWidget instance can be resized. (Native
+  // hardware may only support a single fixed size.)
+  // Perhaps, this should be "attempt to resize the accelerated widget"?
+  bool AcceleratedWidgetCanBeResized(gfx::AcceleratedWidget w);
+
+  // Returns a gfx::VsyncProvider for the provided AcceleratedWidget. Note
+  // that this may be called after we have entered the sandbox so if there are
+  // operations (e.g. opening a file descriptor providing vsync events) that
+  // must be done outside of the sandbox, they must have been completed
+  // in InitializeHardware. Returns NULL on error.
+  gfx::VSyncProvider* GetVSyncProvider(gfx::AcceleratedWidget w);
+
+ private:
+  friend struct DefaultSingletonTraits<SurfaceFactory>;
+  scoped_ptr<SurfaceFactoryDelegate> delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(SurfaceFactory);
+};
+
+}  // namespace ui
+
+
+#endif  // UI_BASE_LINUX_NATIVE_SURFACE_LNUX_FACTORY_