MonitorManager to manage multiple monitors.

ui/aura/monitor.h

Index: ui/aura/monitor.h
diff --git a/ui/aura/monitor.h b/ui/aura/monitor.h
new file mode 100644
index 0000000000000000000000000000000000000000..2a958b428f40757013ec03ac32fbca540397f1e8
--- /dev/null
+++ b/ui/aura/monitor.h
@@ -0,0 +1,47 @@
+// Copyright (c) 2012 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_AURA_MONITOR_H_
+#define UI_AURA_MONITOR_H_
+#pragma once
+
+#include "base/basictypes.h"
+#include "ui/aura/aura_export.h"
+#include "ui/gfx/insets.h"
+#include "ui/gfx/rect.h"
+
+namespace aura {
+
+class AURA_EXPORT Monitor {
+ public:
+  Monitor();
+
+  // Set/gets monitor's bounds in screen's coordinates.

[Ben Goodger (Google), 2012/03/13 19:28:12]

what does it mean to set the monitor's bounds in screen coordinates? screen to
me is a component of a monitor (i.e. my LCD monitor has a plastic screen).

Do you mean global coordinates relative to primary screen?

[oshima, 2012/03/13 20:06:37]

By screen, I meant the coordinate system used by "gfx::Screen", which will be
relative to primary screen on aura, at least for m19. I'll update the comment.

Mac uses the same scheme, but Windows is slightly different
(http://www.flounder.com/virtual_screen_coordinates.htm). 
Xrandr is somewhat similar to Windows I believe. I'm fine with either way, so
let me know if you have preference.

+  void set_bounds(gfx::Rect& bounds) { bounds_ = bounds;}
+  const gfx::Rect& bounds() const { return bounds_; };
+
+  // Set/gets monitor's workarea insets.
+  void set_work_area_insets(const gfx::Insets& insets) {
+    work_area_insets_ = insets;
+  }
+  const gfx::Insets& work_area_insets() const { return work_area_insets_; }
+
+  // Returns the monitor's size.
+  const gfx::Size& size() const { return bounds_.size(); }
+
+  // Returns the monitor's work area.
+  gfx::Rect GetWorkAreaBounds() const;
+
+ private:
+  // Insets for the work area.
+  gfx::Insets work_area_insets_;
+
+  gfx::Rect bounds_;
+
+  DISALLOW_COPY_AND_ASSIGN(Monitor);
+};
+
+}  // namespace aura
+
+#endif  // UI_AURA_MONITOR_H_