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 "chatviewsettings.h"
37 const qreal minContentsWidth = 200;
39 ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent)
40 : QGraphicsScene(0, 0, width, 0, parent),
43 _singleBufferScene(false),
44 _sceneRect(0, 0, width, 0),
50 MessageFilter *filter = qobject_cast<MessageFilter*>(model);
52 _singleBufferScene = filter->isSingleBufferFilter();
55 ChatViewSettings defaultSettings;
56 int defaultFirstColHandlePos = defaultSettings.value("FirstColumnHandlePos", 80).toInt();
57 int defaultSecondColHandlePos = defaultSettings.value("SecondColumnHandlePos", 200).toInt();
59 ChatViewSettings viewSettings(this);
60 firstColHandlePos = viewSettings.value("FirstColumnHandlePos", defaultFirstColHandlePos).toInt();
61 secondColHandlePos = viewSettings.value("SecondColumnHandlePos", defaultSecondColHandlePos).toInt();
63 firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator());
64 addItem(firstColHandle);
65 firstColHandle->setXPos(firstColHandlePos);
66 connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
67 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), firstColHandle, SLOT(sceneRectChanged(const QRectF &)));
69 secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator());
70 addItem(secondColHandle);
71 secondColHandle->setXPos(secondColHandlePos);
72 connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
73 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), secondColHandle, SLOT(sceneRectChanged(const QRectF &)));
77 connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
78 this, SLOT(rowsInserted(const QModelIndex &, int, int)));
79 connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)),
80 this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int)));
82 if(model->rowCount() > 0)
83 rowsInserted(QModelIndex(), 0, model->rowCount() - 1);
86 ChatScene::~ChatScene() {
89 void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
92 qreal y = _sceneRect.y();
93 qreal width = _sceneRect.width();
95 bool atBottom = false;
97 bool hasWidth = (width != 0);
100 y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
103 if(start == _lines.count())
106 for(int i = end; i >= start; i--) {
107 ChatLine *line = new ChatLine(i, model());
108 _lines.insert(start, line);
112 h -= line->setGeometry(width);
113 line->setPos(0, y+h);
115 line->setPos(0, y+h);
116 h += line->setGeometry(width);
121 // update existing items
122 for(int i = end+1; i < _lines.count(); i++) {
123 _lines[i]->setRow(i);
127 if(_selectionStart >= 0) {
128 int offset = end - start + 1;
129 if(_selectionStart >= start) _selectionStart += offset;
130 if(_selectionEnd >= start) _selectionEnd += offset;
131 if(_firstSelectionRow >= start) _firstSelectionRow += offset;
132 if(_lastSelectionRow >= start) _lastSelectionRow += offset;
135 // neither pre- or append means we have to do dirty work: move items...
136 if(!(atTop || atBottom)) {
139 int moveEnd = _lines.count() - 1;
141 if(end > _lines.count() - end) {
150 for(int i = moveStart; i <= moveEnd; i++) {
152 line->setPos(0, line->pos().y() + offset);
157 if(atTop || moveTop) {
158 updateSceneRect(_sceneRect.adjusted(0, h, 0, 0));
160 updateSceneRect(_sceneRect.adjusted(0, 0, 0, h));
161 emit sceneHeightChanged(h);
166 void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) {
169 qreal h = 0; // total height of removed items;
171 bool atTop = (start == 0);
172 bool atBottom = (end == _lines.count() - 1);
173 bool moveTop = false;
175 // remove items from scene
176 QList<ChatLine *>::iterator lineIter = _lines.begin() + start;
177 int lineCount = start;
178 while(lineIter != _lines.end() && lineCount <= end) {
179 h += (*lineIter)->height();
181 lineIter = _lines.erase(lineIter);
185 // update rows of remaining chatlines
186 for(int i = start; i < _lines.count(); i++) {
187 _lines.at(i)->setRow(i);
191 if(_selectionStart >= 0) {
192 int offset = end - start + 1;
193 if(_selectionStart >= start)
194 _selectionStart -= offset;
195 if(_selectionEnd >= start)
196 _selectionEnd -= offset;
197 if(_firstSelectionRow >= start)
198 _firstSelectionRow -= offset;
199 if(_lastSelectionRow >= start)
200 _lastSelectionRow -= offset;
203 // neither removing at bottom or top means we have to move items...
204 if(!(atTop || atBottom)) {
207 int moveEnd = _lines.count() - 1;
209 if(start > _lines.count() - end) {
218 for(int i = moveStart; i <= moveEnd; i++) {
220 line->setPos(0, line->pos().y() + offset);
225 if(atTop || moveTop) {
226 updateSceneRect(_sceneRect.adjusted(0, h, 0, 0));
228 updateSceneRect(_sceneRect.adjusted(0, 0, 0, -h));
232 void ChatScene::setWidth(qreal width, bool forceReposition) {
233 if(width == _sceneRect.width() && !forceReposition)
236 // clock_t startT = clock();
237 qreal oldHeight = _sceneRect.height();
238 qreal y = _sceneRect.y();
241 foreach(ChatLine *line, _lines) {
242 line->setPos(0, linePos);
243 linePos += line->setGeometry(width);
246 qreal height = linePos - y;
248 updateSceneRect(QRectF(0, y, width, height));
251 qreal dh = height - oldHeight;
253 emit sceneHeightChanged(dh);
255 // clock_t endT = clock();
256 // qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
259 void ChatScene::handlePositionChanged(qreal xpos) {
260 bool first = (sender() == firstColHandle);
263 oldx = firstColHandlePos;
264 firstColHandlePos = xpos;
266 oldx = secondColHandlePos;
267 secondColHandlePos = xpos;
270 ChatViewSettings viewSettings(this);
271 viewSettings.setValue("FirstColumnHandlePos", firstColHandlePos);
272 viewSettings.setValue("SecondColumnHandlePos", secondColHandlePos);
274 ChatViewSettings defaultSettings;
275 defaultSettings.setValue("FirstColumnHandlePos", firstColHandlePos);
276 defaultSettings.setValue("SecondColumnHandlePos", secondColHandlePos);
278 setWidth(width(), true); // readjust all chatlines
279 // we get ugly redraw errors if we don't update this explicitly... :(
280 // width() should be the same for both handles, so just use firstColHandle regardless
281 //update(qMin(oldx, xpos), 0, qMax(oldx, xpos) + firstColHandle->width(), height());
284 void ChatScene::setHandleXLimits() {
285 firstColHandle->setXLimits(0, secondColHandle->sceneLeft());
286 secondColHandle->setXLimits(firstColHandle->sceneRight(), width() - minContentsWidth);
289 void ChatScene::setSelectingItem(ChatItem *item) {
290 if(_selectingItem) _selectingItem->clearSelection();
291 _selectingItem = item;
294 void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos) {
295 _selectionStart = _selectionEnd = _lastSelectionRow = _firstSelectionRow = item->row();
296 _selectionStartCol = _selectionMinCol = item->column();
298 _lines[_selectionStart]->setSelected(true, (ChatLineModel::ColumnType)_selectionMinCol);
299 updateSelection(item->mapToScene(itemPos));
302 void ChatScene::updateSelection(const QPointF &pos) {
303 // This is somewhat hacky... we look at the contents item that is at the cursor's y position (ignoring x), since
304 // it has the full height. From this item, we can then determine the row index and hence the ChatLine.
305 ChatItem *contentItem = static_cast<ChatItem *>(itemAt(QPointF(secondColHandle->sceneRight() + 1, pos.y())));
306 if(!contentItem) return;
308 int curRow = contentItem->row();
310 if(pos.x() > secondColHandle->sceneRight()) curColumn = ChatLineModel::ContentsColumn;
311 else if(pos.x() > firstColHandlePos) curColumn = ChatLineModel::SenderColumn;
312 else curColumn = ChatLineModel::TimestampColumn;
314 ChatLineModel::ColumnType minColumn = (ChatLineModel::ColumnType)qMin(curColumn, _selectionStartCol);
315 if(minColumn != _selectionMinCol) {
316 _selectionMinCol = minColumn;
317 for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) {
318 _lines[l]->setSelected(true, minColumn);
321 int newstart = qMin(curRow, _firstSelectionRow);
322 int newend = qMax(curRow, _firstSelectionRow);
323 if(newstart < _selectionStart) {
324 for(int l = newstart; l < _selectionStart; l++)
325 _lines[l]->setSelected(true, minColumn);
327 if(newstart > _selectionStart) {
328 for(int l = _selectionStart; l < newstart; l++)
329 _lines[l]->setSelected(false);
331 if(newend > _selectionEnd) {
332 for(int l = _selectionEnd+1; l <= newend; l++)
333 _lines[l]->setSelected(true, minColumn);
335 if(newend < _selectionEnd) {
336 for(int l = newend+1; l <= _selectionEnd; l++)
337 _lines[l]->setSelected(false);
340 _selectionStart = newstart;
341 _selectionEnd = newend;
342 _lastSelectionRow = curRow;
344 if(newstart == newend && minColumn == ChatLineModel::ContentsColumn) {
345 if(!_selectingItem) {
346 qWarning() << "WARNING: ChatScene::updateSelection() has a null _selectingItem, this should never happen! Please report.";
349 _lines[curRow]->setSelected(false);
350 _isSelecting = false;
351 _selectingItem->continueSelecting(_selectingItem->mapFromScene(pos));
355 void ChatScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
356 if(_isSelecting && event->buttons() == Qt::LeftButton) {
357 updateSelection(event->scenePos());
360 QGraphicsScene::mouseMoveEvent(event);
364 void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event) {
365 if(event->buttons() == Qt::LeftButton && _selectionStart >= 0) {
366 for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) {
367 _lines[l]->setSelected(false);
369 _selectionStart = -1;
370 QGraphicsScene::mousePressEvent(event); // so we can start a new local selection
372 QGraphicsScene::mousePressEvent(event);
376 void ChatScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
377 if(_isSelecting && !event->buttons() & Qt::LeftButton) {
378 putToClipboard(selectionToString());
379 _isSelecting = false;
382 QGraphicsScene::mouseReleaseEvent(event);
386 void ChatScene::putToClipboard(const QString &selection) {
387 // TODO Configure clipboards
389 QApplication::clipboard()->setText(selection, QClipboard::Selection);
392 QApplication::clipboard()->setText(selection);
396 //!\brief Convert current selection to human-readable string.
397 QString ChatScene::selectionToString() const {
398 //TODO Make selection format configurable!
399 if(!_isSelecting) return QString();
400 int start = qMin(_selectionStart, _selectionEnd);
401 int end = qMax(_selectionStart, _selectionEnd);
402 if(start < 0 || end >= _lines.count()) {
403 qDebug() << "Invalid selection range:" << start << end;
407 for(int l = start; l <= end; l++) {
408 if(_selectionMinCol == ChatLineModel::TimestampColumn)
409 result += _lines[l]->item(ChatLineModel::TimestampColumn).data(MessageModel::DisplayRole).toString() + " ";
410 if(_selectionMinCol <= ChatLineModel::SenderColumn)
411 result += _lines[l]->item(ChatLineModel::SenderColumn).data(MessageModel::DisplayRole).toString() + " ";
412 result += _lines[l]->item(ChatLineModel::ContentsColumn).data(MessageModel::DisplayRole).toString() + "\n";
417 void ChatScene::requestBacklog() {
418 static const int REQUEST_COUNT = 100;
419 int backlogSize = model()->rowCount();
420 if(isSingleBufferScene() && backlogSize != 0 && _lastBacklogSize + REQUEST_COUNT <= backlogSize) {
421 QModelIndex msgIdx = model()->index(0, 0);
422 MsgId msgId = model()->data(msgIdx, ChatLineModel::MsgIdRole).value<MsgId>();
423 BufferId bufferId = model()->data(msgIdx, ChatLineModel::BufferIdRole).value<BufferId>();
424 _lastBacklogSize = backlogSize;
425 Client::backlogManager()->requestBacklog(bufferId, REQUEST_COUNT, msgId.toInt());
429 int ChatScene::sectionByScenePos(int x) {
430 if(x < firstColHandle->x())
431 return ChatLineModel::TimestampColumn;
432 if(x < secondColHandle->x())
433 return ChatLineModel::SenderColumn;
435 return ChatLineModel::ContentsColumn;
438 void ChatScene::updateSceneRect(const QRectF &rect) {