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 detai
 ls.
 
 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, Cambridge, MA 02110-1301, USA.
 
 */
 #ifndef TOUCH_HELPER_H
 #define TOUCH_HELPER_H
 
 // Qt
 
 // KF
 
 // Local
 #include <lib/gwenviewlib_export.h>
 
 class QPoint;
 class QEvent;
 
 namespace Gwenview
 {
 namespace Touch_Helper
 {
 // constant variables that define touch behavior
 struct Touch {
     // a little delay in the begin of the gesture, to get more data of the touch points moving so the recognizing
     // of the pan gesture is better
     static const int gestureDelay = 110;
     // this defines how much a touch point can move, for a single tap gesture
     static const int wiggleRoomForTap = 10;
     // how long must a touch point be stationary, before he can move for a TabHoldAndMoving gesture
     static const int durationForTapHold = 400;
     // in what time and how far must the touch point moving to trigger a swipe gesture
     static const int maxTimeFrameForSwipe = 100;
     static const int minDistanceForSwipe = 70;
     // How long is the duration for a simple tap gesture
     static const int maxTimeForTap = 100;
     // max interval for a double tap gesture
     static const int doubleTapInterval = 400;
 };
 
 GWENVIEWLIB_EXPORT QPoint simpleTapPosition(QEvent *);
 GWENVIEWLIB_EXPORT QPoint simpleTouchPosition(QEvent *, int = 0);
 GWENVIEWLIB_EXPORT bool touchStationary(QEvent *);
 
 } // namespace
 } // namespace
 
 #endif /* TOUCH_HELPER_H */