ozone: Add OzoneWindowFactory & OzoneWindow

ui/ozone/window/ozone_window.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_WINDOW_OZONE_WINDOW_H_
+#define UI_OZONE_WINDOW_OZONE_WINDOW_H_
+
+#include "ui/base/cursor/cursor.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/ozone/ozone_export.h"
+
+namespace gfx {
+class PointF;
+class Rect;
+}
+
+namespace ui {
+
+// The ozone representation of a platform window.
+//
+// A window has a surface for painting on, a cursor, and receives events
+// from the windowing system. You can paint on a window using either
+// software compositing or GLES.
+//
+// The surface part is somewhat decoupled using an opaque handle
+// represented by the type gfx::AcceleratedWidget. Once the window is
+// created, you can call GetAcceleratedWidget() to get the handle. The same
+// handle will get passed to SurfaceFactoryOzone::CreateSurfaceForWidget,
+// which can be used to initialize the graphical output.
+//
+// This object is created & owned on the UI thread. The surface might be
+// created in another thread, or even another process such as the GPU
+// process. The implementation must be prepared to handle this.
+class OZONE_EXPORT OzoneWindow {

[rjkroege, 2014/03/24 16:11:51]

this needs to be coupled to the backing Display in some fashion. I need to think
about how. dnicora@: what do you think?

[spang, 2014/03/24 18:15:29]

Yes. I think this must happen behind the scenes in WindowFactoryOzone though:

- WindowFactoryOzone gets the initial screen bounds in CreateWindow()
- WindowFactoryOzone finds the right display from screen bounds
- WindowFactoryOzone passes the platform-internal display object to the
platform-internal window constructor

[dnicoara, 2014/03/24 21:04:26]

Having the coupling behind the scenes should be fine. From a configuration
perspective we'll likely need to know which OzoneWindow belongs to which
display, though we'll have that information when creating the OzoneWindow. From
a WindowFactoryOzone perspective, we'll likely need to pass in a gfx::Display or
maybe the display id in order to get the correct mapping.

+ public:
+  OzoneWindow();
+  virtual ~OzoneWindow();
+
+  // Return a gfx::AcceleratedWidget that can be used to paint on the window.
+  virtual gfx::AcceleratedWidget GetAcceleratedWidget();
+
+  // Warp the cursor to a location within this window. If the cursor actually
+  // moves, the implementation must dispatch a mouse move event with the new
+  // location.
+  virtual void WarpCursorTo(const gfx::PointF& location);
+
+  // Get the bounds of the window.
+  virtual gfx::Rect GetBounds();
+
+  // Resize the window. Returns whether the resize was successful.
+  virtual bool Resize(const gfx::Rect& bounds);
+
+  // Change the active cursor for this window.
+  virtual void SetCursor(PlatformCursor cursor);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_WINDOW_OZONE_WINDOW_H_