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_ 36