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- // Copyright 2014 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.
- #include "ui/events/gesture_event_details.h"
- #include <ostream>
- #include "base/check_op.h"
- #include "base/notreached.h"
- namespace ui {
- GestureEventDetails::GestureEventDetails()
- : type_(ET_UNKNOWN),
- device_type_(GestureDeviceType::DEVICE_UNKNOWN),
- touch_points_(0) {}
- GestureEventDetails::GestureEventDetails(ui::EventType type)
- : type_(type),
- device_type_(GestureDeviceType::DEVICE_UNKNOWN),
- touch_points_(1) {
- DCHECK_GE(type, ET_GESTURE_TYPE_START);
- DCHECK_LE(type, ET_GESTURE_TYPE_END);
- }
- GestureEventDetails::GestureEventDetails(ui::EventType type,
- float delta_x,
- float delta_y,
- ui::ScrollGranularity units)
- : type_(type),
- device_type_(GestureDeviceType::DEVICE_UNKNOWN),
- touch_points_(1) {
- DCHECK_GE(type, ET_GESTURE_TYPE_START);
- DCHECK_LE(type, ET_GESTURE_TYPE_END);
- switch (type_) {
- case ui::ET_GESTURE_SCROLL_BEGIN:
- data_.scroll_begin.x_hint = delta_x;
- data_.scroll_begin.y_hint = delta_y;
- data_.scroll_begin.delta_hint_units = units;
- break;
- case ui::ET_GESTURE_SCROLL_UPDATE:
- data_.scroll_update.x = delta_x;
- data_.scroll_update.y = delta_y;
- data_.scroll_update.delta_units = units;
- break;
- case ui::ET_SCROLL_FLING_START:
- data_.fling_velocity.x = delta_x;
- data_.fling_velocity.y = delta_y;
- break;
- case ui::ET_GESTURE_TWO_FINGER_TAP:
- data_.first_finger_enclosing_rectangle.width = delta_x;
- data_.first_finger_enclosing_rectangle.height = delta_y;
- break;
- case ui::ET_GESTURE_SWIPE:
- data_.swipe.left = delta_x < 0;
- data_.swipe.right = delta_x > 0;
- data_.swipe.up = delta_y < 0;
- data_.swipe.down = delta_y > 0;
- break;
- default:
- NOTREACHED() << "Invalid event type for constructor: " << type;
- }
- }
- GestureEventDetails::GestureEventDetails(ui::EventType type,
- const GestureEventDetails& other)
- : type_(type),
- data_(other.data_),
- device_type_(other.device_type_),
- primary_pointer_type_(other.primary_pointer_type_),
- primary_unique_touch_event_id_(other.primary_unique_touch_event_id_),
- touch_points_(other.touch_points_),
- bounding_box_(other.bounding_box_) {
- DCHECK_GE(type, ET_GESTURE_TYPE_START);
- DCHECK_LE(type, ET_GESTURE_TYPE_END);
- switch (type) {
- case ui::ET_GESTURE_SCROLL_BEGIN:
- // Synthetic creation of SCROLL_BEGIN from PINCH_BEGIN is explicitly
- // allowed as an exception.
- if (other.type() == ui::ET_GESTURE_PINCH_BEGIN)
- break;
- [[fallthrough]];
- case ui::ET_GESTURE_SCROLL_UPDATE:
- case ui::ET_SCROLL_FLING_START:
- case ui::ET_GESTURE_SWIPE:
- case ui::ET_GESTURE_PINCH_UPDATE:
- DCHECK_EQ(type, other.type()) << " - Invalid gesture conversion from "
- << other.type() << " to " << type;
- break;
- default:
- break;
- }
- }
- GestureEventDetails::Details::Details() {
- memset(this, 0, sizeof(Details));
- }
- } // namespace ui
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