ui/display/chromeos/display_util.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_DISPLAY_CHROMEOS_DISPLAY_UTIL_H_
   6 #define UI_DISPLAY_CHROMEOS_DISPLAY_UTIL_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "third_party/cros_system_api/dbus/service_constants.h"
  12 #include "ui/display/display_export.h"
  13 #include "ui/display/types/display_constants.h"
  14
  15 namespace ui {
  16
  17 class DisplaySnapshot;
  18
  19 // Returns a string describing |state|.
  20 std::string DisplayPowerStateToString(chromeos::DisplayPowerState state);
  21
  22 // Returns a string describing |state|.
  23 std::string MultipleDisplayStateToString(MultipleDisplayState state);
  24
  25 // Returns the number of displays in |displays| that should be turned on, per
  26 // |state|.  If |display_power| is non-NULL, it is updated to contain the
  27 // on/off state of each corresponding entry in |displays|.
  28 int DISPLAY_EXPORT
  29 GetDisplayPower(const std::vector<DisplaySnapshot*>& displays,
  30                 chromeos::DisplayPowerState state,
  31                 std::vector<bool>* display_power);
  32
  33 }  // namespace ui
  34
  35 #endif  // UI_DISPLAY_CHROMEOS_DISPLAY_UTIL_H_