/***************************************************************************
- * Copyright (C) 2005-09 by the Quassel Project *
+ * Copyright (C) 2005-2016 by the Quassel Project *
* devel@quassel-irc.org *
* *
* This program is free software; you can redistribute it and/or modify *
* 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., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <QGraphicsTextItem>
_currentScaleFactor = 1;
_invalidateFilter = false;
+ setAttribute(Qt::WA_AcceptTouchEvents);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
setAlignment(Qt::AlignLeft|Qt::AlignBottom);
setScene(_scene);
connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
- _lastScrollbarPos = verticalScrollBar()->value();
+ _lastScrollbarPos = verticalScrollBar()->maximum();
connect(Client::networkModel(), SIGNAL(markerLineSet(BufferId, MsgId)), SLOT(markerLineSet(BufferId, MsgId)));
}
}
- if (event->type() == QEvent::Wheel) {
+#if QT_VERSION >= 0x050000
+ if (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->device()->type()==QTouchDevice::TouchScreen) {
+#else
+ if (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->deviceType()==QTouchEvent::TouchScreen) {
+#endif
+ // Enable scrolling by draging, disable selecting/clicking content
+ setDragMode(QGraphicsView::ScrollHandDrag);
+ setInteractive(false);
+ // if scrollbar is not visible we need to request backlog below else we need to accept
+ // the event now (return true) so that we will receive TouchUpdate and TouchEnd/TouchCancel
+ if (verticalScrollBar()->isVisible()) return true;
+ }
+
+#if QT_VERSION >= 0x050000
+ if (event->type() == QEvent::TouchEnd || event->type() == QEvent::TouchCancel) {
+#else
+ if (event->type() == QEvent::TouchEnd) {
+#endif
+ // End scroll and reset settings to default
+ setDragMode(QGraphicsView::NoDrag);
+ setInteractive(true);
+ _firstTouchUpdateHappened = false;
+ return true;
+ }
+
+ if (event->type() == QEvent::TouchUpdate) {
+ if (!_firstTouchUpdateHappened) {
+ // After the first movement of a Touch-Point, calculate the distance in both axis
+ // and if the point moved more horizontally abort scroll.
+ QTouchEvent::TouchPoint p = ((QTouchEvent*)event)->touchPoints().at(0);
+ double dx = qAbs(p.lastPos().x() - p.pos().x());
+ double dy = qAbs(p.lastPos().y() - p.pos().y());
+ if (dx > dy) {
+ setDragMode(QGraphicsView::NoDrag);
+ setInteractive(true);
+ }
+ _firstTouchUpdateHappened = true;
+ }
+ // Applying the movement happens automatically by the drag-mode
+ }
+#if QT_VERSION >= 0x050000
+ if (event->type() == QEvent::Wheel || (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->device()->type()==QTouchDevice::TouchScreen) || event->type() == QEvent::TouchUpdate) {
+#else
+ if (event->type() == QEvent::Wheel || (event->type() == QEvent::TouchBegin && ((QTouchEvent*)event)->deviceType()==QTouchEvent::TouchScreen) || event->type() == QEvent::TouchUpdate) {
+#endif
if (!verticalScrollBar()->isVisible()) {
scene()->requestBacklog();
return true;
void ChatView::resizeEvent(QResizeEvent *event)
{
+ // if view is currently scrolled to bottom, we want it that way after resizing
+ bool atBottom = (_lastScrollbarPos == verticalScrollBar()->maximum());
+
QGraphicsView::resizeEvent(event);
- // FIXME: do we really need to scroll down on resize?
+ // if scrolling to bottom, do it immediately.
+ if(atBottom)
+ {
+ // we can reduce viewport updates if we scroll to the bottom allready at the beginning
+ verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+ }
- // we can reduce viewport updates if we scroll to the bottom allready at the beginning
- verticalScrollBar()->setValue(verticalScrollBar()->maximum());
scene()->updateForViewport(viewport()->width(), viewport()->height());
adjustSceneRect();
- _lastScrollbarPos = verticalScrollBar()->maximum();
- verticalScrollBar()->setValue(verticalScrollBar()->maximum());
-
+ if(atBottom)
+ {
+ _lastScrollbarPos = verticalScrollBar()->maximum();
+ verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+ }
checkChatLineCaches();
}