File indexing completed on 2024-05-12 04:19:52

 /*
 Gwenview: an image viewer
 Copyright 2019 Steffen Hartleib <steffenhartleib@t-online.de>
 
 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 <QEvent>
 #include <QGraphicsWidget>
 #include <QPoint>
 #include <QTouchEvent>
 
 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<QTouchEvent *>(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<QTouchEvent *>(event)) {
         const QPointF distance = touchEvent->touchPoints().first().startPos() - touchEvent->touchPoints().first().pos();
         if (distance.manhattanLength() <= Touch::wiggleRoomForTap) {
             return true;
         }
     }
     return false;
 }
 
 } // namespace
 } // namespace