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 #include "ui/events/gesture_event_details.h" 6 7 namespace ui { 8 9 GestureEventDetails::GestureEventDetails() 10 : type_(ET_UNKNOWN), touch_points_(0), oldest_touch_id_(-1) { 11 } 12 13 GestureEventDetails::GestureEventDetails(ui::EventType type) 14 : type_(type), touch_points_(1), oldest_touch_id_(-1) { 15 DCHECK_GE(type, ET_GESTURE_TYPE_START); 16 DCHECK_LE(type, ET_GESTURE_TYPE_END); 17 } 18 19 GestureEventDetails::GestureEventDetails(ui::EventType type, 20 float delta_x, 21 float delta_y) 22 : type_(type), touch_points_(1), oldest_touch_id_(-1) { 23 DCHECK_GE(type, ET_GESTURE_TYPE_START); 24 DCHECK_LE(type, ET_GESTURE_TYPE_END); 25 switch (type_) { 26 case ui::ET_GESTURE_SCROLL_BEGIN: 27 data.scroll_begin.x_hint = delta_x; 28 data.scroll_begin.y_hint = delta_y; 29 break; 30 31 case ui::ET_GESTURE_SCROLL_UPDATE: 32 data.scroll_update.x = delta_x; 33 data.scroll_update.y = delta_y; 34 break; 35 36 case ui::ET_SCROLL_FLING_START: 37 data.fling_velocity.x = delta_x; 38 data.fling_velocity.y = delta_y; 39 break; 40 41 case ui::ET_GESTURE_TWO_FINGER_TAP: 42 data.first_finger_enclosing_rectangle.width = delta_x; 43 data.first_finger_enclosing_rectangle.height = delta_y; 44 break; 45 46 case ui::ET_GESTURE_SWIPE: 47 data.swipe.left = delta_x < 0; 48 data.swipe.right = delta_x > 0; 49 data.swipe.up = delta_y < 0; 50 data.swipe.down = delta_y > 0; 51 break; 52 53 default: 54 NOTREACHED() << "Invalid event type for constructor: " << type; 55 } 56 } 57 58 GestureEventDetails::Details::Details() { 59 memset(this, 0, sizeof(Details)); 60 } 61 62 } // namespace ui 63
