Change Selection Behaviour

[quassel.git] / src / qtui / chatview.cpp

diff --git a/src/qtui/chatview.cpp b/src/qtui/chatview.cpp
index 20b25e0..5e76a33 100644 (file)
--- a/src/qtui/chatview.cpp
+++ b/src/qtui/chatview.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-2014 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  *
@@ -59,6 +59,7 @@ void ChatView::init(MessageFilter *filter)
     _currentScaleFactor = 1;
     _invalidateFilter = false;
 
+    setAttribute(Qt::WA_AcceptTouchEvents);
     setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
     setAlignment(Qt::AlignLeft|Qt::AlignBottom);
@@ -108,7 +109,37 @@ bool ChatView::event(QEvent *event)
         }
     }
 
-    if (event->type() == QEvent::Wheel) {
+    if (event->type() == QEvent::TouchBegin) {
+        setDragMode(QGraphicsView::ScrollHandDrag);
+        setInteractive(false);
+        if (verticalScrollBar()->isVisible()) return true; //if scrollbar is not visible we need to request backlog below
+    }
+
+#if QT_VERSION >= 0x050000
+    if (event->type() == QEvent::TouchEnd || event->type() == QEvent::TouchCancel) {
+#else
+    if (event->type() == QEvent::TouchEnd) {
+#endif
+        setDragMode(QGraphicsView::NoDrag);
+        setInteractive(true);
+               _firstTouchUpdateHappened = false;
+        return true;
+    }
+
+       if (event->type() == QEvent::TouchUpdate) {
+               if (!_firstTouchUpdateHappened) {
+                       QTouchEvent::TouchPoint p = ((QTouchEvent*)event)->touchPoints().at(0);
+                       double dx = abs (p.lastPos().x() - p.pos().x());
+                       double dy = abs (p.lastPos().y() - p.pos().y());
+                       if (dx > dy) {
+                               setDragMode(QGraphicsView::NoDrag);
+                               setInteractive(true);
+                       }
+                       _firstTouchUpdateHappened = true;
+               }
+       }
+
+    if (event->type() == QEvent::Wheel || event->type() == QEvent::TouchBegin || event->type() == QEvent::TouchUpdate) {
         if (!verticalScrollBar()->isVisible()) {
             scene()->requestBacklog();
             return true;