| /* |
| * Copyright (C) 2017 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "ScrollGestureController.h" |
| |
| #include <WebCore/Scrollbar.h> |
| |
| namespace WebKit { |
| |
| bool ScrollGestureController::handleEvent(const struct wpe_input_touch_event_raw* touchPoint) |
| { |
| switch (touchPoint->type) { |
| case wpe_input_touch_event_type_down: |
| m_start.time = touchPoint->time; |
| m_start.x = touchPoint->x; |
| m_start.y = touchPoint->y; |
| m_offset.x = touchPoint->x; |
| m_offset.y = touchPoint->y; |
| return false; |
| case wpe_input_touch_event_type_motion: |
| if (!m_handling) { |
| int32_t deltaX = touchPoint->x - m_start.x; |
| int32_t deltaY = touchPoint->y - m_start.y; |
| uint32_t deltaTime = touchPoint->time - m_start.time; |
| |
| int pixelsPerLineStep = WebCore::Scrollbar::pixelsPerLineStep(); |
| m_handling = std::abs(deltaX) >= pixelsPerLineStep |
| || std::abs(deltaY) >= pixelsPerLineStep |
| || deltaTime >= 200; |
| } |
| if (m_handling) { |
| m_axisEvent = { |
| wpe_input_axis_event_type_motion, |
| touchPoint->time, m_start.x, m_start.y, |
| 2, (touchPoint->y - m_offset.y), 0 |
| }; |
| m_offset.x = touchPoint->x; |
| m_offset.y = touchPoint->y; |
| return true; |
| } |
| return false; |
| case wpe_input_touch_event_type_up: |
| if (m_handling) { |
| m_handling = false; |
| m_axisEvent = { |
| wpe_input_axis_event_type_null, |
| 0, 0, 0, 0, 0, 0 |
| }; |
| return true; |
| } |
| return false; |
| default: |
| return false; |
| } |
| } |
| |
| } // namespace WebKit |