Ozone integration.

ui/ozone/public/surface_ozone_canvas.h

+// Copyright 2014 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_OZONE_PUBLIC_SURFACE_OZONE_CANVAS_H_
+#define UI_OZONE_PUBLIC_SURFACE_OZONE_CANVAS_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "skia/ext/refptr.h"
+#include "ui/ozone/ozone_base_export.h"
+
+class SkSurface;
+
+namespace gfx {
+class Size;
+class VSyncProvider;
+}
+
+namespace ui {
+
+// The platform-specific part of an software output. The class is intended
+// for use when no EGL/GLES2 acceleration is possible.
+// This class owns any bits that the ozone implementation needs freed when
+// the software output is destroyed.
+class OZONE_BASE_EXPORT SurfaceOzoneCanvas {
+ public:
+  virtual ~SurfaceOzoneCanvas() {}
+
+  // Returns an SkSurface for drawing on the window.
+  virtual skia::RefPtr<SkSurface> GetSurface() = 0;
+
+  // Attempts to resize the canvas to match the viewport size. After
+  // resizing, the compositor must call GetCanvas() to get the next
+  // canvas - this invalidates any previous canvas from GetCanvas().
+  virtual void ResizeCanvas(const gfx::Size& viewport_size) = 0;
+
+  // Present the current canvas. After presenting, the compositor must
+  // call GetCanvas() to get the next canvas - this invalidates any
+  // previous canvas from GetCanvas().
+  //
+  // The implementation may assume that any pixels outside the damage
+  // rectangle are unchanged since the previous call to PresentCanvas().
+  virtual void PresentCanvas(const gfx::Rect& damage) = 0;
+
+  // Returns a gfx::VsyncProvider for this surface. 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 an empty scoped_ptr on error.
+  virtual scoped_ptr<gfx::VSyncProvider> CreateVSyncProvider() = 0;
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PUBLIC_SURFACE_OZONE_CANVAS_H_