1 /***************************************************************************
2 * Copyright (C) 2005-09 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>
26 #include "bufferwidget.h"
27 #include "chatscene.h"
30 #include "messagefilter.h"
32 #include "qtuistyle.h"
33 #include "clientignorelistmanager.h"
37 ChatView::ChatView(BufferId bufferId, QWidget *parent)
38 : QGraphicsView(parent),
41 QList<BufferId> filterList;
42 filterList.append(bufferId);
43 MessageFilter *filter = new MessageFilter(Client::messageModel(), filterList, this);
47 ChatView::ChatView(MessageFilter *filter, QWidget *parent)
48 : QGraphicsView(parent),
54 void ChatView::init(MessageFilter *filter) {
56 _currentScaleFactor = 1;
57 _invalidateFilter = false;
59 setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
60 setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
61 setAlignment(Qt::AlignLeft|Qt::AlignBottom);
63 //setOptimizationFlags(QGraphicsView::DontClipPainter | QGraphicsView::DontAdjustForAntialiasing);
64 // setOptimizationFlags(QGraphicsView::DontAdjustForAntialiasing);
65 setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
66 // setTransformationAnchor(QGraphicsView::NoAnchor);
67 setTransformationAnchor(QGraphicsView::AnchorViewCenter);
69 _scrollTimer.setInterval(100);
70 _scrollTimer.setSingleShot(true);
71 connect(&_scrollTimer, SIGNAL(timeout()), SLOT(scrollTimerTimeout()));
73 _scene = new ChatScene(filter, filter->idString(), viewport()->width(), this);
74 connect(_scene, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(adjustSceneRect()));
75 connect(_scene, SIGNAL(lastLineChanged(QGraphicsItem *, qreal)), this, SLOT(lastLineChanged(QGraphicsItem *, qreal)));
76 connect(_scene, SIGNAL(mouseMoveWhileSelecting(const QPointF &)), this, SLOT(mouseMoveWhileSelecting(const QPointF &)));
79 connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(verticalScrollbarChanged(int)));
80 _lastScrollbarPos = verticalScrollBar()->value();
82 connect(Client::networkModel(), SIGNAL(markerLineSet(BufferId,MsgId)), SLOT(markerLineSet(BufferId,MsgId)));
84 // only connect if client is synched with a core
85 if(Client::isConnected())
86 connect(Client::ignoreListManager(), SIGNAL(ignoreListChanged()), this, SLOT(invalidateFilter()));
89 bool ChatView::event(QEvent *event) {
90 if(event->type() == QEvent::KeyPress) {
91 QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
92 switch(keyEvent->key()) {
96 case Qt::Key_PageDown:
97 if(!verticalScrollBar()->isVisible()) {
98 scene()->requestBacklog();
106 if(event->type() == QEvent::Wheel) {
107 if(!verticalScrollBar()->isVisible()) {
108 scene()->requestBacklog();
113 if(event->type() == QEvent::Show) {
114 if(_invalidateFilter)
118 return QGraphicsView::event(event);
121 void ChatView::resizeEvent(QResizeEvent *event) {
122 QGraphicsView::resizeEvent(event);
124 // FIXME: do we really need to scroll down on resize?
126 // we can reduce viewport updates if we scroll to the bottom allready at the beginning
127 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
128 scene()->updateForViewport(viewport()->width(), viewport()->height());
131 _lastScrollbarPos = verticalScrollBar()->maximum();
132 verticalScrollBar()->setValue(verticalScrollBar()->maximum());
134 checkChatLineCaches();
137 void ChatView::adjustSceneRect() {
138 // Workaround for QTBUG-6322
139 // If the viewport's sceneRect() is (almost) as wide as as the viewport itself,
140 // Qt wants to reserve space for scrollbars even if they're turned off, resulting in
141 // an ugly white space at the bottom of the ChatView.
142 // Since the view's scene's width actually doesn't matter at all, we just adjust it
143 // by some hopefully large enough value to avoid this problem.
145 setSceneRect(scene()->sceneRect().adjusted(0, 0, -25 ,0));
148 void ChatView::mouseMoveWhileSelecting(const QPointF &scenePos) {
149 int y = (int)mapFromScene(scenePos).y();
153 else if(y > height())
154 _scrollOffset = y - height();
156 if(_scrollOffset && !_scrollTimer.isActive())
157 _scrollTimer.start();
160 void ChatView::scrollTimerTimeout() {
162 QAbstractSlider *vbar = verticalScrollBar();
163 if(_scrollOffset < 0 && vbar->value() > 0)
164 vbar->setValue(qMax(vbar->value() + _scrollOffset, 0));
165 else if(_scrollOffset > 0 && vbar->value() < vbar->maximum())
166 vbar->setValue(qMin(vbar->value() + _scrollOffset, vbar->maximum()));
169 void ChatView::lastLineChanged(QGraphicsItem *chatLine, qreal offset) {
171 // disabled until further testing/discussion
172 //if(!scene()->isScrollingAllowed())
175 QAbstractSlider *vbar = verticalScrollBar();
177 if(vbar->maximum() - vbar->value() <= (offset + 5) * _currentScaleFactor ) { // 5px grace area
178 vbar->setValue(vbar->maximum());
182 void ChatView::verticalScrollbarChanged(int newPos) {
183 QAbstractSlider *vbar = verticalScrollBar();
186 // check for backlog request
187 if(newPos < _lastScrollbarPos) {
188 int relativePos = 100;
189 if(vbar->maximum() - vbar->minimum() != 0)
190 relativePos = (newPos - vbar->minimum()) * 100 / (vbar->maximum() - vbar->minimum());
192 if(relativePos < 20) {
193 scene()->requestBacklog();
196 _lastScrollbarPos = newPos;
198 // FIXME: Fugly workaround for the ChatView scrolling up 1px on buffer switch
199 if(vbar->maximum() - newPos <= 2)
200 vbar->setValue(vbar->maximum());
203 MsgId ChatView::lastMsgId() const {
207 QAbstractItemModel *model = scene()->model();
208 if(!model || model->rowCount() == 0)
211 return model->index(model->rowCount() - 1, 0).data(MessageModel::MsgIdRole).value<MsgId>();
214 MsgId ChatView::lastVisibleMsgId() const {
215 ChatLine *line = lastVisibleChatLine();
218 return line->msgId();
223 bool chatLinePtrLessThan(ChatLine *one, ChatLine *other) {
224 return one->row() < other->row();
227 // TODO: figure out if it's cheaper to use a cached list (that we'd need to keep updated)
228 QSet<ChatLine *> ChatView::visibleChatLines(Qt::ItemSelectionMode mode) const {
229 QSet<ChatLine *> result;
230 foreach(QGraphicsItem *item, items(viewport()->rect().adjusted(-1, -1, 1, 1), mode)) {
231 ChatLine *line = qgraphicsitem_cast<ChatLine *>(item);
238 QList<ChatLine *> ChatView::visibleChatLinesSorted(Qt::ItemSelectionMode mode) const {
239 QList<ChatLine *> result = visibleChatLines(mode).toList();
240 qSort(result.begin(), result.end(), chatLinePtrLessThan);
244 ChatLine *ChatView::lastVisibleChatLine(bool ignoreDayChange) const {
248 QAbstractItemModel *model = scene()->model();
249 if(!model || model->rowCount() == 0)
254 QSet<ChatLine *> visibleLines = visibleChatLines(Qt::ContainsItemBoundingRect);
255 foreach(ChatLine *line, visibleLines) {
256 if(line->row() > row && (ignoreDayChange? line->msgType() != Message::DayChange : true))
261 return scene()->chatLine(row);
266 void ChatView::setMarkerLineVisible(bool visible) {
267 scene()->setMarkerLineVisible(visible);
270 void ChatView::setMarkerLine(MsgId msgId) {
271 if(!scene()->isSingleBufferScene())
274 BufferId bufId = scene()->singleBufferId();
275 Client::setMarkerLine(bufId, msgId);
278 void ChatView::markerLineSet(BufferId buffer, MsgId msgId) {
279 if(!scene()->isSingleBufferScene() || scene()->singleBufferId() != buffer)
282 scene()->setMarkerLine(msgId);
283 scene()->setMarkerLineVisible(true);
286 void ChatView::jumpToMarkerLine(bool requestBacklog) {
287 scene()->jumpToMarkerLine(requestBacklog);
290 void ChatView::addActionsToMenu(QMenu *menu, const QPointF &pos) {
292 BufferWidget *bw = qobject_cast<BufferWidget *>(bufferContainer());
294 bw->addActionsToMenu(menu, pos);
295 menu->addSeparator();
299 void ChatView::zoomIn() {
300 _currentScaleFactor *= 1.2;
302 scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
305 void ChatView::zoomOut() {
306 _currentScaleFactor /= 1.2;
307 scale(1 / 1.2, 1 / 1.2);
308 scene()->setWidth(viewport()->width() / _currentScaleFactor - 2);
311 void ChatView::zoomOriginal() {
312 scale(1/_currentScaleFactor, 1/_currentScaleFactor);
313 _currentScaleFactor = 1;
314 scene()->setWidth(viewport()->width() - 2);
317 void ChatView::invalidateFilter() {
318 // if this is the currently selected chatview
319 // invalidate immediately
321 _scene->filter()->invalidateFilter();
322 _invalidateFilter = false;
324 // otherwise invalidate whenever the view is shown
326 _invalidateFilter = true;
330 void ChatView::scrollContentsBy(int dx, int dy) {
331 QGraphicsView::scrollContentsBy(dx, dy);
332 checkChatLineCaches();
335 void ChatView::setHasCache(ChatLine *line, bool hasCache) {
337 _linesWithCache.insert(line);
339 _linesWithCache.remove(line);
342 void ChatView::checkChatLineCaches() {
343 qreal top = mapToScene(viewport()->rect().topLeft()).y() - 10; // some grace area to avoid premature cleaning
344 qreal bottom = mapToScene(viewport()->rect().bottomRight()).y() + 10;
345 QSet<ChatLine *>::iterator iter = _linesWithCache.begin();
346 while(iter != _linesWithCache.end()) {
347 ChatLine *line = *iter;
348 if(line->pos().y() + line->height() < top || line->pos().y() > bottom) {
350 iter = _linesWithCache.erase(iter);