content/common/input/touch_action.h

   1 // Copyright 2013 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 CONTENT_COMMON_INPUT_TOUCH_ACTION_H_
   6 #define CONTENT_COMMON_INPUT_TOUCH_ACTION_H_
   7
   8 namespace content {
   9
  10 // The current touch action specifies what accelerated browser operations
  11 // (panning and zooming) are currently permitted via touch input.
  12 // See http://www.w3.org/TR/pointerevents/#the-touch-action-css-property.
  13 enum TouchAction {
  14   // All actions are pemitted (the default).
  15   TOUCH_ACTION_AUTO = 0,
  16
  17   // No scrolling or zooming allowed.
  18   TOUCH_ACTION_NONE = 1 << 0,
  19
  20   TOUCH_ACTION_PAN_X = 1 << 1,
  21
  22   TOUCH_ACTION_PAN_Y = 1 << 2,
  23
  24   TOUCH_ACTION_PAN_X_Y = TOUCH_ACTION_PAN_X | TOUCH_ACTION_PAN_Y,
  25
  26   TOUCH_ACTION_PINCH_ZOOM = 1 << 3,
  27
  28   TOUCH_ACTION_MANIPULATION = TOUCH_ACTION_PAN_X_Y | TOUCH_ACTION_PINCH_ZOOM,
  29
  30   TOUCH_ACTION_MAX = (1 << 4) - 1
  31 };
  32
  33 }  // namespace content
  34
  35 #endif  // CONTENT_COMMON_INPUT_TOUCH_ACTION_H_