/* * 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) }; 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 }; return true; } return false; default: return false; } } } // namespace WebKit