ash/magnifier/magnifier_constants.h

   1 // Copyright (c) 2012 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 ASH_MAGNIFIER_MAGNIFIER_CONSTANTS_H_
   6 #define ASH_MAGNIFIER_MAGNIFIER_CONSTANTS_H_
   7
   8 namespace ash {
   9
  10 // Note: Do not change these values; UMA and prefs depend on them.
  11 enum MagnifierType {
  12   MAGNIFIER_FULL    = 1,
  13   MAGNIFIER_PARTIAL = 2,
  14 };
  15
  16 const int kMaxMagnifierType = 2;
  17
  18 const MagnifierType kDefaultMagnifierType = MAGNIFIER_FULL;
  19
  20 // Factor of magnification scale. For example, when this value is 1.189, scale
  21 // value will be changed x1.000, x1.189, x1.414, x1.681, x2.000, ...
  22 // Note: this value is 2.0 ^ (1 / 4).
  23 const float kMagnificationScaleFactor = 1.18920712f;
  24
  25 }  // namespace ash
  26
  27 #endif  // ASH_MAGNIFIER_MAGNIFIER_CONSTANTS_H_