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 <QApplication>
23 #include <QGraphicsSceneMouseEvent>
24 #include <QPersistentModelIndex>
28 #include "chatlinemodelitem.h"
29 #include "chatscene.h"
31 #include "clientbacklogmanager.h"
32 #include "columnhandleitem.h"
33 #include "messagefilter.h"
35 #include "qtuisettings.h"
37 const qreal minContentsWidth = 200;
39 ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent)
40 : QGraphicsScene(parent),
45 _singleBufferScene(false),
51 MessageFilter *filter = qobject_cast<MessageFilter*>(model);
53 _singleBufferScene = filter->isSingleBufferFilter();
56 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(rectChanged(const QRectF &)));
58 connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
59 this, SLOT(rowsInserted(const QModelIndex &, int, int)));
60 connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)),
61 this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int)));
63 for(int i = 0; i < model->rowCount(); i++) {
64 ChatLine *line = new ChatLine(i, model);
70 int defaultFirstColHandlePos = s.value("ChatView/DefaultFirstColumnHandlePos", 80).toInt();
71 int defaultSecondColHandlePos = s.value("ChatView/DefaultSecondColumnHandlePos", 200).toInt();
73 firstColHandlePos = s.value(QString("ChatView/%1/FirstColumnHandlePos").arg(_idString),
74 defaultFirstColHandlePos).toInt();
75 secondColHandlePos = s.value(QString("ChatView/%1/SecondColumnHandlePos").arg(_idString),
76 defaultSecondColHandlePos).toInt();
78 firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator());
79 addItem(firstColHandle);
81 secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator());
82 addItem(secondColHandle);
84 connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
85 connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
87 firstColHandle->setXPos(firstColHandlePos);
88 firstColHandle->setXLimits(0, secondColHandlePos);
89 secondColHandle->setXPos(secondColHandlePos);
90 secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
92 emit heightChanged(height());
95 ChatScene::~ChatScene() {
98 void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
100 // maybe make this more efficient by prepending stuff with negative yval
101 // dunno if that's worth not guranteeing that 0 is on the top...
102 // TODO bulk inserts, iterators
105 if(_width && start > 0)
106 y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
108 for(int i = start; i <= end; i++) {
109 ChatLine *line = new ChatLine(i, model());
110 _lines.insert(i, line);
113 line->setPos(0, y+h);
114 h += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
117 // update existing items
118 for(int i = end+1; i < _lines.count(); i++) {
119 _lines[i]->setRow(i);
123 if(_selectionStart >= 0) {
124 int offset = end - start + 1;
125 if(_selectionStart >= start) _selectionStart += offset;
126 if(_selectionEnd >= start) _selectionEnd += offset;
127 if(_firstSelectionRow >= start) _firstSelectionRow += offset;
128 if(_lastSelectionRow >= start) _lastSelectionRow += offset;
133 for(int i = end+1; i < _lines.count(); i++) {
134 _lines.at(i)->moveBy(0, h);
136 setSceneRect(QRectF(0, 0, _width, _height));
137 emit heightChanged(_height);
141 void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) {
144 qreal h = 0; // total height of removed items;
146 // remove items from scene
147 QList<ChatLine *>::iterator lineIter = _lines.begin() + start;
148 int lineCount = start;
149 while(lineIter != _lines.end() && lineCount <= end) {
150 h += (*lineIter)->height();
152 lineIter = _lines.erase(lineIter);
156 // update rows of remaining chatlines
157 for(int i = start; i < _lines.count(); i++) {
158 _lines.at(i)->setRow(i);
162 if(_selectionStart >= 0) {
163 int offset = end - start + 1;
164 if(_selectionStart >= start)
165 _selectionStart -= offset;
166 if(_selectionEnd >= start)
167 _selectionEnd -= offset;
168 if(_firstSelectionRow >= start)
169 _firstSelectionRow -= offset;
170 if(_lastSelectionRow >= start)
171 _lastSelectionRow -= offset;
174 // reposition remaining chatlines
176 Q_ASSERT(_height >= h);
178 for(int i = start; i < _lines.count(); i++) {
179 _lines.at(i)->moveBy(0, -h);
181 setSceneRect(QRectF(0, 0, _width, _height));
182 emit heightChanged(_height);
186 void ChatScene::setWidth(qreal w) {
189 foreach(ChatLine *line, _lines) {
190 line->setPos(0, _height);
191 _height += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
193 setSceneRect(QRectF(0, 0, w, _height));
194 secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
195 emit heightChanged(_height);
198 void ChatScene::rectChanged(const QRectF &rect) {
199 firstColHandle->sceneRectChanged(rect);
200 secondColHandle->sceneRectChanged(rect);
203 void ChatScene::handlePositionChanged(qreal xpos) {
204 bool first = (sender() == firstColHandle);
207 oldx = firstColHandlePos;
208 firstColHandlePos = xpos;
210 oldx = secondColHandlePos;
211 secondColHandlePos = xpos;
214 s.setValue(QString("ChatView/%1/FirstColumnHandlePos").arg(_idString), firstColHandlePos);
215 s.setValue(QString("ChatView/%1/SecondColumnHandlePos").arg(_idString), secondColHandlePos);
216 s.setValue(QString("ChatView/DefaultFirstColumnHandlePos"), firstColHandlePos);
217 s.setValue(QString("ChatView/DefaultSecondColumnHandlePos"), secondColHandlePos);
219 setWidth(width()); // readjust all chatlines
220 // we get ugly redraw errors if we don't update this explicitly... :(
221 // width() should be the same for both handles, so just use firstColHandle regardless
222 update(qMin(oldx, xpos) - firstColHandle->width()/2, 0, qMax(oldx, xpos) + firstColHandle->width()/2, height());
225 void ChatScene::setSelectingItem(ChatItem *item) {
226 if(_selectingItem) _selectingItem->clearSelection();
227 _selectingItem = item;
230 void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos) {
231 _selectionStart = _selectionEnd = _lastSelectionRow = _firstSelectionRow = item->row();
232 _selectionStartCol = _selectionMinCol = item->column();
234 _lines[_selectionStart]->setSelected(true, (ChatLineModel::ColumnType)_selectionMinCol);
235 updateSelection(item->mapToScene(itemPos));
238 void ChatScene::updateSelection(const QPointF &pos) {
239 // This is somewhat hacky... we look at the contents item that is at the cursor's y position (ignoring x), since
240 // it has the full height. From this item, we can then determine the row index and hence the ChatLine.
241 ChatItem *contentItem = static_cast<ChatItem *>(itemAt(QPointF(secondColHandlePos + secondColHandle->width()/2, pos.y())));
242 if(!contentItem) return;
244 int curRow = contentItem->row();
246 if(pos.x() > secondColHandlePos + secondColHandle->width()/2) curColumn = ChatLineModel::ContentsColumn;
247 else if(pos.x() > firstColHandlePos) curColumn = ChatLineModel::SenderColumn;
248 else curColumn = ChatLineModel::TimestampColumn;
250 ChatLineModel::ColumnType minColumn = (ChatLineModel::ColumnType)qMin(curColumn, _selectionStartCol);
251 if(minColumn != _selectionMinCol) {
252 _selectionMinCol = minColumn;
253 for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) {
254 _lines[l]->setSelected(true, minColumn);
257 int newstart = qMin(curRow, _firstSelectionRow);
258 int newend = qMax(curRow, _firstSelectionRow);
259 if(newstart < _selectionStart) {
260 for(int l = newstart; l < _selectionStart; l++)
261 _lines[l]->setSelected(true, minColumn);
263 if(newstart > _selectionStart) {
264 for(int l = _selectionStart; l < newstart; l++)
265 _lines[l]->setSelected(false);
267 if(newend > _selectionEnd) {
268 for(int l = _selectionEnd+1; l <= newend; l++)
269 _lines[l]->setSelected(true, minColumn);
271 if(newend < _selectionEnd) {
272 for(int l = newend+1; l <= _selectionEnd; l++)
273 _lines[l]->setSelected(false);
276 _selectionStart = newstart;
277 _selectionEnd = newend;
278 _lastSelectionRow = curRow;
280 if(newstart == newend && minColumn == ChatLineModel::ContentsColumn) {
281 _lines[curRow]->setSelected(false);
282 _isSelecting = false;
283 Q_ASSERT(_selectingItem); // this seems to not always be true, but I have no idea why
284 // adding this assert to make sure the occasional segfault is caused by this
285 _selectingItem->continueSelecting(_selectingItem->mapFromScene(pos));
289 void ChatScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
290 if(_isSelecting && event->buttons() == Qt::LeftButton) {
291 updateSelection(event->scenePos());
294 QGraphicsScene::mouseMoveEvent(event);
298 void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event) {
299 if(event->buttons() == Qt::LeftButton && _selectionStart >= 0) {
300 for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) {
301 _lines[l]->setSelected(false);
303 _selectionStart = -1;
304 QGraphicsScene::mousePressEvent(event); // so we can start a new local selection
306 QGraphicsScene::mousePressEvent(event);
310 void ChatScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
311 if(_isSelecting && !event->buttons() & Qt::LeftButton) {
312 putToClipboard(selectionToString());
313 _isSelecting = false;
316 QGraphicsScene::mouseReleaseEvent(event);
320 void ChatScene::putToClipboard(const QString &selection) {
321 // TODO Configure clipboards
323 QApplication::clipboard()->setText(selection, QClipboard::Selection);
326 QApplication::clipboard()->setText(selection);
330 //!\brief Convert current selection to human-readable string.
331 QString ChatScene::selectionToString() const {
332 //TODO Make selection format configurable!
333 if(!_isSelecting) return QString();
334 int start = qMin(_selectionStart, _selectionEnd);
335 int end = qMax(_selectionStart, _selectionEnd);
336 if(start < 0 || end >= _lines.count()) {
337 qDebug() << "Invalid selection range:" << start << end;
341 for(int l = start; l <= end; l++) {
342 if(_selectionMinCol == ChatLineModel::TimestampColumn)
343 result += _lines[l]->item(ChatLineModel::TimestampColumn).data(MessageModel::DisplayRole).toString() + " ";
344 if(_selectionMinCol <= ChatLineModel::SenderColumn)
345 result += _lines[l]->item(ChatLineModel::SenderColumn).data(MessageModel::DisplayRole).toString() + " ";
346 result += _lines[l]->item(ChatLineModel::ContentsColumn).data(MessageModel::DisplayRole).toString() + "\n";
351 void ChatScene::requestBacklog() {
352 static const int REQUEST_COUNT = 50;
353 int backlogSize = model()->rowCount();
354 if(isSingleBufferScene() && backlogSize != 0 && _lastBacklogSize + REQUEST_COUNT <= backlogSize) {
355 QModelIndex msgIdx = model()->index(0, 0);
356 MsgId msgId = model()->data(msgIdx, ChatLineModel::MsgIdRole).value<MsgId>();
357 BufferId bufferId = model()->data(msgIdx, ChatLineModel::BufferIdRole).value<BufferId>();
358 _lastBacklogSize = backlogSize;
359 Client::backlogManager()->requestBacklog(bufferId, REQUEST_COUNT, msgId.toInt());
363 int ChatScene::sectionByScenePos(int x) {
364 if(x < firstColHandlePos)
365 return ChatLineModel::TimestampColumn;
366 if(x < secondColHandlePos)
367 return ChatLineModel::SenderColumn;
369 return ChatLineModel::ContentsColumn;