Screen cleanup:

* Split ScreenAsh to ScreenUtil (set of utility functions) and the screen implementation.
* moved screen_ash from Shell to DisplayManager. Ash specific imp is now hidden in DisplayManager.
* Shell now creates a separate screen object which simply keeps the list of displays for shutdown. This allow all screen operation valid during shutdown.

BUG=None
TBR=hongbo.min@intel.com,sky@chromium.org

Review URL: https://codereview.chromium.org/138003007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@245562 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 68 insertions, 0 deletions

diff --git a/ash/screen_util.h b/ash/screen_util.h
new file mode 100644
index 0000000..856ef4d
--- /dev/null
+++ b/ash/screen_util.h
@@ -0,0 +1,68 @@
+// 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 ASH_SCREEN_UTIL_H_
+#define ASH_SCREEN_UTIL_H_
+
+#include "ash/ash_export.h"
+#include "base/basictypes.h"
+
+namespace aura {
+class Window;
+}
+
+namespace gfx {
+class Display;
+class Rect;
+class Point;
+}
+
+namespace ash {
+
+class ASH_EXPORT ScreenUtil {
+ public:
+  // Finds the display that contains |point| in screeen coordinates.
+  // Returns invalid display if there is no display that can satisfy
+  // the condition.
+  static gfx::Display FindDisplayContainingPoint(const gfx::Point& point);
+
+  // Returns the bounds for maximized windows in parent coordinates.
+  // Maximized windows trigger auto-hiding the shelf.
+  static gfx::Rect GetMaximizedWindowBoundsInParent(aura::Window* window);
+
+  // Returns the display bounds in parent coordinates.
+  static gfx::Rect GetDisplayBoundsInParent(aura::Window* window);
+
+  // Returns the display's work area bounds in parent coordinates.
+  static gfx::Rect GetDisplayWorkAreaBoundsInParent(aura::Window* window);
+
+  // TODO(oshima): Move following two to wm/coordinate_conversion.h
+  // Converts |rect| from |window|'s coordinates to the virtual screen
+  // coordinates.
+  static gfx::Rect ConvertRectToScreen(aura::Window* window,
+                                       const gfx::Rect& rect);
+
+  // Converts |rect| from virtual screen coordinates to the |window|'s
+  // coordinates.
+  static gfx::Rect ConvertRectFromScreen(aura::Window* window,
+                                         const gfx::Rect& rect);
+
+  // Returns a gfx::Display object for secondary display. Returns
+  // invalid display if there is no secondary display connected.
+  static const gfx::Display& GetSecondaryDisplay();
+
+  // Returns a gfx::Display object for the specified id.  Returns
+  // invalid display if no such display is connected.
+  static const gfx::Display& GetDisplayForId(int64 display_id);
+
+private:
+  ScreenUtil() {}
+  ~ScreenUtil() {}
+
+  DISALLOW_COPY_AND_ASSIGN(ScreenUtil);
+};
+
+}  // namespace ash
+
+#endif  // ASH_SCREEN_UTIL_H_