/* Gwenview: an image viewer Copyright 2019 Steffen Hartleib This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include "touch_helper.h" // Qt #include "gwenview_lib_debug.h" #include #include #include #include namespace Gwenview { namespace Touch_Helper { QPoint simpleTapPosition(QEvent *event) { if (event->type() == QEvent::TouchEnd) { event->accept(); if (touchStationary(event)) { return simpleTouchPosition(event); } } return QPoint(-1, -1); } QPoint simpleTouchPosition(QEvent *event, int at) { if (auto touchEvent = static_cast(event)) { if (touchEvent->touchPoints().size() > at) { return touchEvent->touchPoints().at(at).pos().toPoint(); } } return QPoint(-1, -1); } bool touchStationary(QEvent *event) { if (auto touchEvent = static_cast(event)) { const QPointF distance = touchEvent->touchPoints().first().startPos() - touchEvent->touchPoints().first().pos(); if (distance.manhattanLength() <= Touch::wiggleRoomForTap) { return true; } } return false; } } // namespace } // namespace