| // 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. |
| |
| #include "third_party/blink/public/platform/web_touch_event.h" |
| |
| namespace blink { |
| |
| WebTouchEvent WebTouchEvent::FlattenTransform() const { |
| WebTouchEvent transformed_event = *this; |
| for (unsigned i = 0; i < touches_length; ++i) { |
| transformed_event.touches[i] = TouchPointInRootFrame(i); |
| } |
| transformed_event.frame_translate_.x = 0; |
| transformed_event.frame_translate_.y = 0; |
| transformed_event.frame_scale_ = 1; |
| |
| return transformed_event; |
| } |
| |
| WebTouchPoint WebTouchEvent::TouchPointInRootFrame(unsigned point) const { |
| DCHECK_LT(point, touches_length); |
| if (point >= touches_length) |
| return WebTouchPoint(); |
| |
| WebTouchPoint transformed_point = touches[point]; |
| transformed_point.radius_x /= frame_scale_; |
| transformed_point.radius_y /= frame_scale_; |
| transformed_point.SetPositionInWidget( |
| (transformed_point.PositionInWidget().x / frame_scale_) + |
| frame_translate_.x, |
| (transformed_point.PositionInWidget().y / frame_scale_) + |
| frame_translate_.y); |
| return transformed_point; |
| } |
| |
| } // namespace blink |
