| // Copyright 2017 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 CC_INPUT_TOUCH_ACTION_H_ |
| #define CC_INPUT_TOUCH_ACTION_H_ |
| |
| #include <cstdlib> |
| #include <string> |
| |
| #include "base/logging.h" |
| |
| namespace cc { |
| |
| // The current touch action specifies what accelerated browser operations |
| // (panning and zooming) are currently permitted via touch input. |
| // See http://www.w3.org/TR/pointerevents/#the-touch-action-css-property. |
| // This is intended to be the single canonical definition of the enum, it's used |
| // elsewhere in both Blink and content since touch action logic spans those |
| // subsystems. |
| // TODO(crbug.com/720553): rework this enum to enum class. |
| const size_t kTouchActionBits = 6; |
| |
| enum TouchAction { |
| // No scrolling or zooming allowed. |
| kTouchActionNone = 0x0, |
| kTouchActionPanLeft = 0x1, |
| kTouchActionPanRight = 0x2, |
| kTouchActionPanX = kTouchActionPanLeft | kTouchActionPanRight, |
| kTouchActionPanUp = 0x4, |
| kTouchActionPanDown = 0x8, |
| kTouchActionPanY = kTouchActionPanUp | kTouchActionPanDown, |
| kTouchActionPan = kTouchActionPanX | kTouchActionPanY, |
| kTouchActionPinchZoom = 0x10, |
| kTouchActionManipulation = kTouchActionPan | kTouchActionPinchZoom, |
| kTouchActionDoubleTapZoom = 0x20, |
| kTouchActionAuto = kTouchActionManipulation | kTouchActionDoubleTapZoom, |
| kTouchActionMax = (1 << 6) - 1 |
| }; |
| |
| inline TouchAction operator|(TouchAction a, TouchAction b) { |
| return static_cast<TouchAction>(int(a) | int(b)); |
| } |
| |
| inline TouchAction& operator|=(TouchAction& a, TouchAction b) { |
| return a = a | b; |
| } |
| |
| inline TouchAction operator&(TouchAction a, TouchAction b) { |
| return static_cast<TouchAction>(int(a) & int(b)); |
| } |
| |
| inline TouchAction& operator&=(TouchAction& a, TouchAction b) { |
| return a = a & b; |
| } |
| |
| inline const char* TouchActionToString(TouchAction touch_action) { |
| switch (static_cast<int>(touch_action)) { |
| case 0: |
| return "NONE"; |
| case 1: |
| return "PAN_LEFT"; |
| case 2: |
| return "PAN_RIGHT"; |
| case 3: |
| return "PAN_X"; |
| case 4: |
| return "PAN_UP"; |
| case 5: |
| return "PAN_LEFT_PAN_UP"; |
| case 6: |
| return "PAN_RIGHT_PAN_UP"; |
| case 7: |
| return "PAN_X_PAN_UP"; |
| case 8: |
| return "PAN_DOWN"; |
| case 9: |
| return "PAN_LEFT_PAN_DOWN"; |
| case 10: |
| return "PAN_RIGHT_PAN_DOWN"; |
| case 11: |
| return "PAN_X_PAN_DOWN"; |
| case 12: |
| return "PAN_Y"; |
| case 13: |
| return "PAN_LEFT_PAN_Y"; |
| case 14: |
| return "PAN_RIGHT_PAN_Y"; |
| case 15: |
| return "PAN_X_PAN_Y"; |
| case 16: |
| return "PINCH_ZOOM"; |
| case 17: |
| return "PAN_LEFT_PINCH_ZOOM"; |
| case 18: |
| return "PAN_RIGHT_PINCH_ZOOM"; |
| case 19: |
| return "PAN_X_PINCH_ZOOM"; |
| case 20: |
| return "PAN_UP_PINCH_ZOOM"; |
| case 21: |
| return "PAN_LEFT_PAN_UP_PINCH_ZOOM"; |
| case 22: |
| return "PAN_RIGHT_PAN_UP_PINCH_ZOOM"; |
| case 23: |
| return "PAN_X_PAN_UP_PINCH_ZOOM"; |
| case 24: |
| return "PAN_DOWN_PINCH_ZOOM"; |
| case 25: |
| return "PAN_LEFT_PAN_DOWN_PINCH_ZOOM"; |
| case 26: |
| return "PAN_RIGHT_PAN_DOWN_PINCH_ZOOM"; |
| case 27: |
| return "PAN_X_PAN_DOWN_PINCH_ZOOM"; |
| case 28: |
| return "PAN_Y_PINCH_ZOOM"; |
| case 29: |
| return "PAN_LEFT_PAN_Y_PINCH_ZOOM"; |
| case 30: |
| return "PAN_RIGHT_PAN_Y_PINCH_ZOOM"; |
| case 31: |
| return "MANIPULATION"; |
| case 32: |
| return "DOUBLE_TAP_ZOOM"; |
| case 33: |
| return "PAN_LEFT_DOUBLE_TAP_ZOOM"; |
| case 34: |
| return "PAN_RIGHT_DOUBLE_TAP_ZOOM"; |
| case 35: |
| return "PAN_X_DOUBLE_TAP_ZOOM"; |
| case 36: |
| return "PAN_UP_DOUBLE_TAP_ZOOM"; |
| case 37: |
| return "PAN_LEFT_PAN_UP_DOUBLE_TAP_ZOOM"; |
| case 38: |
| return "PAN_RIGHT_PAN_UP_DOUBLE_TAP_ZOOM"; |
| case 39: |
| return "PAN_X_PAN_UP_DOUBLE_TAP_ZOOM"; |
| case 40: |
| return "PAN_DOWN_DOUBLE_TAP_ZOOM"; |
| case 41: |
| return "PAN_LEFT_PAN_DOWN_DOUBLE_TAP_ZOOM"; |
| case 42: |
| return "PAN_RIGHT_PAN_DOWN_DOUBLE_TAP_ZOOM"; |
| case 43: |
| return "PAN_X_PAN_DOWN_DOUBLE_TAP_ZOOM"; |
| case 44: |
| return "PAN_Y_DOUBLE_TAP_ZOOM"; |
| case 45: |
| return "PAN_LEFT_PAN_Y_DOUBLE_TAP_ZOOM"; |
| case 46: |
| return "PAN_RIGHT_PAN_Y_DOUBLE_TAP_ZOOM"; |
| case 47: |
| return "PAN_X_PAN_Y_DOUBLE_TAP_ZOOM"; |
| case 48: |
| return "PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 49: |
| return "PAN_LEFT_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 50: |
| return "PAN_RIGHT_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 51: |
| return "PAN_X_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 52: |
| return "PAN_UP_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 53: |
| return "PAN_LEFT_PAN_UP_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 54: |
| return "PAN_RIGHT_PAN_UP_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 55: |
| return "PAN_X_PAN_UP_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 56: |
| return "PAN_DOWN_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 57: |
| return "PAN_LEFT_PAN_DOWN_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 58: |
| return "PAN_RIGHT_PAN_DOWN_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 59: |
| return "PAN_X_PAN_DOWN_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 60: |
| return "PAN_Y_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 61: |
| return "PAN_LEFT_PAN_Y_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 62: |
| return "PAN_RIGHT_PAN_Y_PINCH_ZOOM_DOUBLE_TAP_ZOOM"; |
| case 63: |
| return "AUTO"; |
| } |
| NOTREACHED(); |
| return ""; |
| } |
| |
| } // namespace cc |
| |
| #endif // CC_INPUT_TOUCH_ACTION_H_ |