X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fqtui%2Fchatview.cpp;h=94f3fb74097ad5a6e2626455645f78696af515be;hp=22150dddd382087082d883eb0c766e057eecda2c;hb=1e178fffec52593b5ff5b94f5f30dcb43b611034;hpb=03d6711ea69594e8a4637b4ea20baeb9a109af9c

diff --git a/src/qtui/chatview.cpp b/src/qtui/chatview.cpp
index 22150ddd..94f3fb74 100644
--- a/src/qtui/chatview.cpp
+++ b/src/qtui/chatview.cpp
@@ -56,8 +56,9 @@ void ChatView::init(MessageFilter *filter) {
 
   _scene = new ChatScene(filter, filter->idString(), viewport()->width() - 2, this); // see below: resizeEvent()
   connect(_scene, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(sceneRectChanged(const QRectF &)));
-  connect(_scene, SIGNAL(lastLineChanged(QGraphicsItem *)), this, SLOT(lastLineChanged(QGraphicsItem *)));
+  connect(_scene, SIGNAL(lastLineChanged(QGraphicsItem *, qreal)), this, SLOT(lastLineChanged(QGraphicsItem *, qreal)));
   setScene(_scene);
+  // installEventFilter(_scene);
 
   connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
 }
@@ -65,17 +66,22 @@ void ChatView::init(MessageFilter *filter) {
 void ChatView::resizeEvent(QResizeEvent *event) {
   QGraphicsView::resizeEvent(event);
 
-  // FIXME: without the hardcoded -2 Qt reserves space for a horizontal scrollbar even though it's disabled permanently.
+  // we can reduce viewport updates if we scroll to the bottom allready at the beginning
+  verticalScrollBar()->setValue(verticalScrollBar()->maximum());
+
+  // FIXME: without the hardcoded -4 Qt reserves space for a horizontal scrollbar even though it's disabled permanently.
   // this does only occur on QtX11 (at least not on Qt for Mac OS). Seems like a Qt Bug.
-  scene()->updateForViewport(viewport()->width() - 2, viewport()->height());
+  scene()->updateForViewport(viewport()->width() - 4, viewport()->height());
+
   _lastScrollbarPos = verticalScrollBar()->maximum();
   verticalScrollBar()->setValue(verticalScrollBar()->maximum());
 }
 
-void ChatView::lastLineChanged(QGraphicsItem *chatLine) {
+void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset) {
+  Q_UNUSED(chatLine)
   QAbstractSlider *vbar = verticalScrollBar();
   Q_ASSERT(vbar);
-  if(vbar->maximum() - vbar->value() <= chatLine->boundingRect().height() + 5) { // 5px grace area
+  if(vbar->maximum() - vbar->value() <= offset + 5) { // 5px grace area
     vbar->setValue(vbar->maximum());
   }
 }