1 /***************************************************************************
2 * Copyright (C) 2005-08 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include <QGraphicsTextItem>
25 #include "chatlinemodelitem.h"
26 #include "chatscene.h"
29 #include "messagefilter.h"
30 #include "quasselui.h"
32 ChatView::ChatView(BufferId bufferId, QWidget *parent)
33 : QGraphicsView(parent),
36 QList<BufferId> filterList;
37 filterList.append(bufferId);
38 MessageFilter *filter = new MessageFilter(Client::messageModel(), filterList, this);
42 ChatView::ChatView(MessageFilter *filter, QWidget *parent)
43 : QGraphicsView(parent),
49 void ChatView::init(MessageFilter *filter) {
50 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
51 setAlignment(Qt::AlignBottom);
54 _scene = new ChatScene(filter, filter->idString(), this);
55 connect(_scene, SIGNAL(heightChanged(qreal)), this, SLOT(sceneHeightChanged(qreal)));
58 connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
61 void ChatView::resizeEvent(QResizeEvent *event) {
62 scene()->setWidth(event->size().width() - 2); // FIXME figure out why we have to hardcode the -2 here
63 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
66 void ChatView::sceneHeightChanged(qreal h) {
68 bool scrollable = qAbs(verticalScrollBar()->value() - verticalScrollBar()->maximum()) <= 2; // be a bit tolerant here, also FIXME (why we need this?)
69 setSceneRect(scene()->sceneRect());
70 if(scrollable) verticalScrollBar()->setValue(verticalScrollBar()->maximum());
73 void ChatView::verticalScrollbarChanged(int newPos) {
74 QAbstractSlider *vbar = verticalScrollBar();
77 int relativePos = 100;
78 if(vbar->maximum() - vbar->minimum() != 0)
79 relativePos = (newPos - vbar->minimum()) * 100 / (vbar->maximum() - vbar->minimum());
81 if(relativePos < 20) {
82 scene()->requestBacklog();
86 MsgId ChatView::lastMsgId() const {
90 QAbstractItemModel *model = scene()->model();
91 if(!model || model->rowCount() == 0)
94 return model->data(model->index(model->rowCount() - 1, 0), MessageModel::MsgIdRole).value<MsgId>();