src/uisupport/treeviewtouch.cpp

   1 /***************************************************************************
   2 *   Copyright (C) 2005-2015 by the Quassel Project                        *
   3 *   devel@quassel-irc.org                                                 *
   4 *                                                                         *
   5 *   This program is free software; you can redistribute it and/or modify  *
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   7 *   the Free Software Foundation; either version 2 of the License, or     *
   8 *   (at your option) version 3.                                           *
   9 *                                                                         *
  10 *   This program is distributed in the hope that it will be useful,       *
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  12 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13 *   GNU General Public License for more details.                          *
  14 *                                                                         *
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  19 ***************************************************************************/
  20 #include "treeviewtouch.h"
  21
  22 #include <QtCore>
  23 #include <QTouchEvent>
  24 #include <QScrollBar>
  25
  26 TreeViewTouch::TreeViewTouch(QWidget *parent)
  27         : QTreeView(parent)
  28 {
  29         setAttribute(Qt::WA_AcceptTouchEvents);
  30 }
  31
  32
  33 bool TreeViewTouch::event(QEvent *event) {
  34         if (event->type() == QEvent::TouchBegin && _lastTouchStart < QDateTime::currentMSecsSinceEpoch() - 1000) { //(slow) double tab = normal behaviour = select multiple. 1000 ok?
  35                 _touchScrollInProgress = true;
  36                 _lastTouchStart = QDateTime::currentMSecsSinceEpoch();
  37                 setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
  38                 return true;
  39         }
  40
  41         if (event->type() == QEvent::TouchUpdate && _touchScrollInProgress) {
  42                 QTouchEvent::TouchPoint p = ((QTouchEvent*)event)->touchPoints().at(0);
  43                 verticalScrollBar()->setValue(verticalScrollBar()->value() - (p.pos().y() - p.lastPos().y()));
  44                 return true;
  45         }
  46
  47 #if QT_VERSION >= 0x050000
  48         if (event->type() == QEvent::TouchEnd || event->type() == QEvent::TouchCancel) {
  49 #else
  50     if (event->type() == QEvent::TouchEnd) {
  51 #endif
  52                 _touchScrollInProgress = false;
  53                 return true;
  54         }
  55
  56         return QTreeView::event(event);
  57 }
  58
  59 void TreeViewTouch::mousePressEvent(QMouseEvent * event) {
  60         if (!_touchScrollInProgress)
  61                 QTreeView::mousePressEvent(event);
  62 }
  63
  64 void TreeViewTouch::mouseMoveEvent(QMouseEvent * event) {
  65         if (!_touchScrollInProgress)
  66                 QTreeView::mouseMoveEvent(event);
  67 };