1 /***************************************************************************
2 * Copyright (C) 2005-2010 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>
24 #include <QGraphicsSceneMouseEvent>
27 #include <QPersistentModelIndex>
41 #include "chatlinemodelitem.h"
42 #include "chatscene.h"
45 #include "clientbacklogmanager.h"
46 #include "columnhandleitem.h"
47 #include "contextmenuactionprovider.h"
48 #include "iconloader.h"
50 #include "markerlineitem.h"
51 #include "messagefilter.h"
53 #include "qtuistyle.h"
54 #include "chatviewsettings.h"
55 #include "webpreviewitem.h"
57 const qreal minContentsWidth = 200;
59 ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, ChatView *parent)
60 : QGraphicsScene(0, 0, width, 0, (QObject *)parent),
64 _singleBufferId(BufferId()),
65 _sceneRect(0, 0, width, 0),
68 _markerLine(new MarkerLineItem(width)),
69 _markerLineValid(false),
70 _markerLineVisible(false),
71 _cutoffMode(CutoffRight),
77 _leftButtonPressed(false)
79 MessageFilter *filter = qobject_cast<MessageFilter*>(model);
80 if(filter && filter->isSingleBufferFilter()) {
81 _singleBufferId = filter->singleBufferId();
85 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _markerLine, SLOT(sceneRectChanged(const QRectF &)));
87 ChatViewSettings defaultSettings;
88 int defaultFirstColHandlePos = defaultSettings.value("FirstColumnHandlePos", 80).toInt();
89 int defaultSecondColHandlePos = defaultSettings.value("SecondColumnHandlePos", 200).toInt();
91 ChatViewSettings viewSettings(this);
92 _firstColHandlePos = viewSettings.value("FirstColumnHandlePos", defaultFirstColHandlePos).toInt();
93 _secondColHandlePos = viewSettings.value("SecondColumnHandlePos", defaultSecondColHandlePos).toInt();
95 _firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator());
96 addItem(_firstColHandle);
97 _firstColHandle->setXPos(_firstColHandlePos);
98 connect(_firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(firstHandlePositionChanged(qreal)));
99 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _firstColHandle, SLOT(sceneRectChanged(const QRectF &)));
101 _secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator());
102 addItem(_secondColHandle);
103 _secondColHandle->setXPos(_secondColHandlePos);
104 connect(_secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(secondHandlePositionChanged(qreal)));
106 connect(this, SIGNAL(sceneRectChanged(const QRectF &)), _secondColHandle, SLOT(sceneRectChanged(const QRectF &)));
110 if(model->rowCount() > 0)
111 rowsInserted(QModelIndex(), 0, model->rowCount() - 1);
113 connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
114 this, SLOT(rowsInserted(const QModelIndex &, int, int)));
115 connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)),
116 this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int)));
117 connect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
118 this, SLOT(rowsRemoved()));
119 connect(model, SIGNAL(dataChanged(QModelIndex, QModelIndex)), SLOT(dataChanged(QModelIndex, QModelIndex)));
122 webPreview.timer.setSingleShot(true);
123 connect(&webPreview.timer, SIGNAL(timeout()), this, SLOT(webPreviewNextStep()));
125 _showWebPreview = defaultSettings.showWebPreview();
126 defaultSettings.notify("ShowWebPreview", this, SLOT(showWebPreviewChanged()));
128 _clickTimer.setInterval(QApplication::doubleClickInterval());
129 _clickTimer.setSingleShot(true);
130 connect(&_clickTimer, SIGNAL(timeout()), SLOT(clickTimeout()));
132 setItemIndexMethod(QGraphicsScene::NoIndex);
135 ChatScene::~ChatScene() {
138 ChatView *ChatScene::chatView() const {
142 ColumnHandleItem *ChatScene::firstColumnHandle() const {
143 return _firstColHandle;
146 ColumnHandleItem *ChatScene::secondColumnHandle() const {
147 return _secondColHandle;
150 ChatLine *ChatScene::chatLine(MsgId msgId, bool matchExact) const {
154 QList<ChatLine*>::ConstIterator start = _lines.begin();
155 QList<ChatLine*>::ConstIterator end = _lines.end();
156 QList<ChatLine*>::ConstIterator middle;
158 int n = int(end - start);
163 middle = start + half;
164 if((*middle)->msgId() < msgId) {
172 if(start != end && (*start)->msgId() == msgId)
178 // if we didn't find the exact msgId, take the next-lower one (this makes sense for lastSeen)
179 if(start == end) // higher than last element
180 return _lines.last();
182 if(start == _lines.begin()) // not (yet?) in our scene
185 // return the next-lower line
189 ChatItem *ChatScene::chatItemAt(const QPointF &scenePos) const {
190 foreach(QGraphicsItem *item, items(scenePos, Qt::IntersectsItemBoundingRect, Qt::AscendingOrder)) {
191 ChatLine *line = qgraphicsitem_cast<ChatLine*>(item);
193 return line->itemAt(line->mapFromScene(scenePos));
198 bool ChatScene::containsBuffer(const BufferId &id) const {
199 MessageFilter *filter = qobject_cast<MessageFilter*>(model());
201 return filter->containsBuffer(id);
206 void ChatScene::setMarkerLineVisible(bool visible) {
207 _markerLineVisible = visible;
208 if(visible && _markerLineValid)
209 _markerLine->setVisible(true);
211 _markerLine->setVisible(false);
214 void ChatScene::setMarkerLine(MsgId msgId) {
215 if(!isSingleBufferScene())
217 if(!msgId.isValid()) {
218 msgId = Client::markerLine(singleBufferId());
219 if(!msgId.isValid()) {
220 _markerLineValid = false;
221 _markerLine->setVisible(false);
226 ChatLine *line = chatLine(msgId, false);
228 // if this was the last line, we won't see it because it's outside the sceneRect
229 // .. which is exactly what we want :)
230 _markerLine->setPos(line->pos() + QPointF(0, line->height()));
232 // DayChange messages might have been hidden outside the scene rect, don't make the markerline visible then!
233 if(_markerLine->pos().y() >= sceneRect().y()) {
234 _markerLineValid = true;
235 if(_markerLineVisible)
236 _markerLine->setVisible(true);
242 void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
246 // QModelIndex sidx = model()->index(start, 2);
247 // QModelIndex eidx = model()->index(end, 2);
248 // qDebug() << "rowsInserted:";
250 // QModelIndex ssidx = model()->index(start - 1, 2);
251 // qDebug() << "Start--:" << start - 1 << ssidx.data(MessageModel::MsgIdRole).value<MsgId>()
252 // << ssidx.data(Qt::DisplayRole).toString();
254 // qDebug() << "Start:" << start << sidx.data(MessageModel::MsgIdRole).value<MsgId>()
255 // << sidx.data(Qt::DisplayRole).toString();
256 // qDebug() << "End:" << end << eidx.data(MessageModel::MsgIdRole).value<MsgId>()
257 // << eidx.data(Qt::DisplayRole).toString();
258 // if(end + 1 < model()->rowCount()) {
259 // QModelIndex eeidx = model()->index(end + 1, 2);
260 // qDebug() << "End++:" << end + 1 << eeidx.data(MessageModel::MsgIdRole).value<MsgId>()
261 // << eeidx.data(Qt::DisplayRole).toString();
266 qreal width = _sceneRect.width();
267 bool atBottom = (start == _lines.count());
268 bool atTop = !atBottom && (start == 0);
270 if(start < _lines.count()) {
271 y = _lines.value(start)->y();
272 } else if(atBottom && !_lines.isEmpty()) {
273 y = _lines.last()->y() + _lines.last()->height();
276 qreal contentsWidth = width - secondColumnHandle()->sceneRight();
277 qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
278 qreal timestampWidth = firstColumnHandle()->sceneLeft();
279 QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
280 QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
283 for(int i = end; i >= start; i--) {
284 ChatLine *line = new ChatLine(i, model(),
286 timestampWidth, senderWidth, contentsWidth,
287 senderPos, contentsPos);
289 line->setPos(0, y-h);
290 _lines.insert(start, line);
294 for(int i = start; i <= end; i++) {
295 ChatLine *line = new ChatLine(i, model(),
297 timestampWidth, senderWidth, contentsWidth,
298 senderPos, contentsPos);
299 line->setPos(0, y+h);
301 _lines.insert(i, line);
306 // update existing items
307 for(int i = end+1; i < _lines.count(); i++) {
308 _lines[i]->setRow(i);
312 if(_selectionStart >= 0) {
313 int offset = end - start + 1;
314 int oldStart = _selectionStart;
315 if(_selectionStart >= start)
316 _selectionStart += offset;
317 if(_selectionEnd >= start) {
318 _selectionEnd += offset;
319 if(_selectionStart == oldStart)
320 for(int i = start; i < start + offset; i++)
321 _lines[i]->setSelected(true);
323 if(_firstSelectionRow >= start)
324 _firstSelectionRow += offset;
327 // neither pre- or append means we have to do dirty work: move items...
328 if(!(atTop || atBottom)) {
330 for(int i = 0; i <= end; i++) {
332 line->setPos(0, line->pos().y() - h);
336 // check if all went right
337 Q_ASSERT(start == 0 || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
339 // if(_lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() != _lines.at(start)->pos().y()) {
340 // qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end;
341 // qDebug() << "line[start - 1]:" << _lines.at(start - 1)->pos().y() << "+" << _lines.at(start - 1)->height() << "=" << _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height();
342 // qDebug() << "line[start]" << _lines.at(start)->pos().y();
343 // qDebug() << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset;
347 Q_ASSERT(end + 1 == _lines.count() || _lines.at(end)->pos().y() + _lines.at(end)->height() == _lines.at(end + 1)->pos().y());
348 // if(end + 1 < _lines.count()) {
349 // if(_lines.at(end)->pos().y() + _lines.at(end)->height() != _lines.at(end + 1)->pos().y()) {
350 // qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end;
351 // qDebug() << "line[end]:" << _lines.at(end)->pos().y() << "+" << _lines.at(end)->height() << "=" << _lines.at(end)->pos().y() + _lines.at(end)->height();
352 // qDebug() << "line[end+1]" << _lines.at(end + 1)->pos().y();
353 // qDebug() << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset;
359 if(start < _firstLineRow) {
360 int prevFirstLineRow = _firstLineRow + (end - start + 1);
361 for(int i = end + 1; i < prevFirstLineRow; i++) {
362 _lines.at(i)->show();
365 // force new search for first proper line
370 emit lastLineChanged(_lines.last(), h);
373 // now move the marker line if necessary. we don't need to do anything if we appended lines though...
374 if(!_markerLineValid || !atBottom)
378 void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) {
381 qreal h = 0; // total height of removed items;
383 bool atTop = (start == 0);
384 bool atBottom = (end == _lines.count() - 1);
385 bool moveTop = false;
389 int row = _selectingItem->row();
390 if(row >= start && row <= end)
394 // remove items from scene
395 QList<ChatLine *>::iterator lineIter = _lines.begin() + start;
396 int lineCount = start;
397 while(lineIter != _lines.end() && lineCount <= end) {
398 h += (*lineIter)->height();
400 lineIter = _lines.erase(lineIter);
404 // update rows of remaining chatlines
405 for(int i = start; i < _lines.count(); i++) {
406 _lines.at(i)->setRow(i);
410 if(_selectionStart >= 0) {
411 int offset = end - start + 1;
412 if(_selectionStart >= start)
413 _selectionStart = qMax(_selectionStart -= offset, start);
414 if(_selectionEnd >= start)
415 _selectionEnd -= offset;
416 if(_firstSelectionRow >= start)
417 _firstSelectionRow -= offset;
419 if(_selectionEnd < _selectionStart) {
420 _isSelecting = false;
421 _selectionStart = -1;
425 // neither removing at bottom or top means we have to move items...
426 if(!(atTop || atBottom)) {
429 int moveEnd = _lines.count() - 1;
430 if(start < _lines.count() - start) {
440 for(int i = moveStart; i <= moveEnd; i++) {
442 line->setPos(0, line->pos().y() + offset);
446 Q_ASSERT(start == 0 || start >= _lines.count() || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
449 // when searching for the first non-date-line we have to take into account that our
450 // model still contains the just removed lines so we cannot simply call updateSceneRect()
451 int numRows = model()->rowCount();
452 QModelIndex firstLineIdx;
454 bool needOffset = false;
457 if(_firstLineRow >= start && _firstLineRow <= end) {
458 _firstLineRow = end + 1;
461 firstLineIdx = model()->index(_firstLineRow, 0);
462 } while((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) == Message::DayChange && _firstLineRow < numRows);
465 _firstLineRow -= end - start + 1;
469 void ChatScene::rowsRemoved() {
470 // move the marker line if necessary
474 void ChatScene::dataChanged(const QModelIndex &tl, const QModelIndex &br) {
475 layout(tl.row(), br.row(), _sceneRect.width());
478 void ChatScene::updateForViewport(qreal width, qreal height) {
479 _viewportHeight = height;
483 void ChatScene::setWidth(qreal width) {
484 if(width == _sceneRect.width())
486 layout(0, _lines.count()-1, width);
489 void ChatScene::layout(int start, int end, qreal width) {
490 // clock_t startT = clock();
492 // disabling the index while doing this complex updates is about
493 // 2 to 10 times faster!
494 //setItemIndexMethod(QGraphicsScene::NoIndex);
498 qreal linePos = _lines.at(row)->scenePos().y() + _lines.at(row)->height();
499 qreal contentsWidth = width - secondColumnHandle()->sceneRight();
500 while(row >= start) {
501 _lines.at(row--)->setGeometryByWidth(width, contentsWidth, linePos);
505 // remaining items don't need geometry changes, but maybe repositioning?
506 ChatLine *line = _lines.at(row);
507 qreal offset = linePos - (line->scenePos().y() + line->height());
510 line = _lines.at(row--);
511 line->setPos(0, line->scenePos().y() + offset);
517 //setItemIndexMethod(QGraphicsScene::BspTreeIndex);
519 updateSceneRect(width);
522 emit layoutChanged();
524 // clock_t endT = clock();
525 // qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
528 void ChatScene::firstHandlePositionChanged(qreal xpos) {
529 if(_firstColHandlePos == xpos)
532 _firstColHandlePos = xpos >= 0 ? xpos : 0;
533 ChatViewSettings viewSettings(this);
534 viewSettings.setValue("FirstColumnHandlePos", _firstColHandlePos);
535 ChatViewSettings defaultSettings;
536 defaultSettings.setValue("FirstColumnHandlePos", _firstColHandlePos);
538 // clock_t startT = clock();
540 // disabling the index while doing this complex updates is about
541 // 2 to 10 times faster!
542 //setItemIndexMethod(QGraphicsScene::NoIndex);
544 QList<ChatLine *>::iterator lineIter = _lines.end();
545 QList<ChatLine *>::iterator lineIterBegin = _lines.begin();
546 qreal timestampWidth = firstColumnHandle()->sceneLeft();
547 qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
548 QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
550 while(lineIter != lineIterBegin) {
552 (*lineIter)->setFirstColumn(timestampWidth, senderWidth, senderPos);
554 //setItemIndexMethod(QGraphicsScene::BspTreeIndex);
558 // clock_t endT = clock();
559 // qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
562 void ChatScene::secondHandlePositionChanged(qreal xpos) {
563 if(_secondColHandlePos == xpos)
566 _secondColHandlePos = xpos;
567 ChatViewSettings viewSettings(this);
568 viewSettings.setValue("SecondColumnHandlePos", _secondColHandlePos);
569 ChatViewSettings defaultSettings;
570 defaultSettings.setValue("SecondColumnHandlePos", _secondColHandlePos);
572 // clock_t startT = clock();
574 // disabling the index while doing this complex updates is about
575 // 2 to 10 times faster!
576 //setItemIndexMethod(QGraphicsScene::NoIndex);
578 QList<ChatLine *>::iterator lineIter = _lines.end();
579 QList<ChatLine *>::iterator lineIterBegin = _lines.begin();
580 qreal linePos = _sceneRect.y() + _sceneRect.height();
581 qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
582 qreal contentsWidth = _sceneRect.width() - secondColumnHandle()->sceneRight();
583 QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
584 while(lineIter != lineIterBegin) {
586 (*lineIter)->setSecondColumn(senderWidth, contentsWidth, contentsPos, linePos);
588 //setItemIndexMethod(QGraphicsScene::BspTreeIndex);
592 emit layoutChanged();
594 // clock_t endT = clock();
595 // qDebug() << "resized" << _lines.count() << "in" << (float)(endT - startT) / CLOCKS_PER_SEC << "sec";
598 void ChatScene::setHandleXLimits() {
599 _firstColHandle->setXLimits(0, _secondColHandle->sceneLeft());
600 _secondColHandle->setXLimits(_firstColHandle->sceneRight(), width() - minContentsWidth);
604 void ChatScene::setSelectingItem(ChatItem *item) {
605 if(_selectingItem) _selectingItem->clearSelection();
606 _selectingItem = item;
609 void ChatScene::startGlobalSelection(ChatItem *item, const QPointF &itemPos) {
610 _selectionStart = _selectionEnd = _firstSelectionRow = item->row();
611 _selectionStartCol = _selectionMinCol = item->column();
613 _lines[_selectionStart]->setSelected(true, (ChatLineModel::ColumnType)_selectionMinCol);
614 updateSelection(item->mapToScene(itemPos));
617 void ChatScene::updateSelection(const QPointF &pos) {
618 int curRow = rowByScenePos(pos);
619 if(curRow < 0) return;
620 int curColumn = (int)columnByScenePos(pos);
621 ChatLineModel::ColumnType minColumn = (ChatLineModel::ColumnType)qMin(curColumn, _selectionStartCol);
622 if(minColumn != _selectionMinCol) {
623 _selectionMinCol = minColumn;
624 for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++) {
625 _lines[l]->setSelected(true, minColumn);
628 int newstart = qMin(curRow, _firstSelectionRow);
629 int newend = qMax(curRow, _firstSelectionRow);
630 if(newstart < _selectionStart) {
631 for(int l = newstart; l < _selectionStart; l++)
632 _lines[l]->setSelected(true, minColumn);
634 if(newstart > _selectionStart) {
635 for(int l = _selectionStart; l < newstart; l++)
636 _lines[l]->setSelected(false);
638 if(newend > _selectionEnd) {
639 for(int l = _selectionEnd+1; l <= newend; l++)
640 _lines[l]->setSelected(true, minColumn);
642 if(newend < _selectionEnd) {
643 for(int l = newend+1; l <= _selectionEnd; l++)
644 _lines[l]->setSelected(false);
647 _selectionStart = newstart;
648 _selectionEnd = newend;
650 if(newstart == newend && minColumn == ChatLineModel::ContentsColumn) {
651 if(!_selectingItem) {
652 // _selectingItem has been removed already
655 _lines[curRow]->setSelected(false);
656 _isSelecting = false;
657 _selectionStart = -1;
658 _selectingItem->continueSelecting(_selectingItem->mapFromScene(pos));
662 bool ChatScene::isPosOverSelection(const QPointF &pos) const {
663 ChatItem *chatItem = chatItemAt(pos);
666 if(hasGlobalSelection()) {
667 int row = chatItem->row();
668 if(row >= qMin(_selectionStart, _selectionEnd) && row <= qMax(_selectionStart, _selectionEnd))
669 return columnByScenePos(pos) >= _selectionMinCol;
671 return chatItem->isPosOverSelection(chatItem->mapFromScene(pos));
676 bool ChatScene::isScrollingAllowed() const {
680 // TODO: Handle clicks and single-item selections too
685 /******** MOUSE HANDLING **************************************************************************/
687 void ChatScene::contextMenuEvent(QGraphicsSceneContextMenuEvent *event) {
688 QPointF pos = event->scenePos();
691 // zoom actions and similar
692 chatView()->addActionsToMenu(&menu, pos);
695 if(isPosOverSelection(pos))
696 menu.addAction(SmallIcon("edit-copy"), tr("Copy Selection"),
697 this, SLOT(selectionToClipboard()),
700 // item-specific options (select link etc)
701 ChatItem *item = chatItemAt(pos);
703 item->addActionsToMenu(&menu, item->mapFromScene(pos));
705 // no item -> default scene actions
706 GraphicalUi::contextMenuActionProvider()->addActions(&menu, filter(), BufferId());
708 if (QtUi::mainWindow()->menuBar()->isHidden())
709 menu.addAction(QtUi::actionCollection("General")->action("ToggleMenuBar"));
711 menu.exec(event->screenPos());
715 void ChatScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
716 if(event->buttons() == Qt::LeftButton) {
717 if(!_clickHandled && (event->scenePos() - _clickPos).toPoint().manhattanLength() >= QApplication::startDragDistance()) {
718 if(_clickTimer.isActive())
720 if(_clickMode == SingleClick && isPosOverSelection(_clickPos))
721 initiateDrag(event->widget());
723 _clickMode = DragStartClick;
724 handleClick(Qt::LeftButton, _clickPos);
726 _clickMode = NoClick;
729 updateSelection(event->scenePos());
730 emit mouseMoveWhileSelecting(event->scenePos());
732 } else if(_clickHandled && _clickMode < DoubleClick)
733 QGraphicsScene::mouseMoveEvent(event);
735 QGraphicsScene::mouseMoveEvent(event);
738 void ChatScene::mousePressEvent(QGraphicsSceneMouseEvent *event) {
739 if(event->buttons() == Qt::LeftButton) {
740 _leftButtonPressed = true;
741 _clickHandled = false;
742 if(!isPosOverSelection(event->scenePos())) {
743 // immediately clear selection if clicked outside; otherwise, wait for potential drag
746 if(_clickMode != NoClick && _clickTimer.isActive()) {
748 case NoClick: _clickMode = SingleClick; break;
749 case SingleClick: _clickMode = DoubleClick; break;
750 case DoubleClick: _clickMode = TripleClick; break;
751 case TripleClick: _clickMode = DoubleClick; break;
752 case DragStartClick: break;
754 handleClick(Qt::LeftButton, _clickPos);
756 _clickMode = SingleClick;
757 _clickPos = event->scenePos();
761 if(event->type() == QEvent::GraphicsSceneMouseDoubleClick)
762 QGraphicsScene::mouseDoubleClickEvent(event);
764 QGraphicsScene::mousePressEvent(event);
767 void ChatScene::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) {
768 // we check for doubleclick ourselves, so just call press handler
769 mousePressEvent(event);
772 void ChatScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) {
773 if(event->button() == Qt::LeftButton && _leftButtonPressed) {
774 _leftButtonPressed = false;
775 if(_clickMode != NoClick) {
776 if(_clickMode == SingleClick)
779 if(!_clickTimer.isActive())
780 handleClick(Qt::LeftButton, _clickPos);
782 // no click -> drag or selection move
783 if(isGloballySelecting()) {
784 selectionToClipboard(QClipboard::Selection);
785 _isSelecting = false;
791 QGraphicsScene::mouseReleaseEvent(event);
794 void ChatScene::clickTimeout() {
795 if(!_leftButtonPressed && _clickMode == SingleClick)
796 handleClick(Qt::LeftButton, _clickPos);
799 void ChatScene::handleClick(Qt::MouseButton button, const QPointF &scenePos) {
800 if(button == Qt::LeftButton) {
803 // Now send click down to items
804 ChatItem *chatItem = chatItemAt(scenePos);
806 chatItem->handleClick(chatItem->mapFromScene(scenePos), _clickMode);
808 _clickHandled = true;
812 void ChatScene::initiateDrag(QWidget *source) {
813 QDrag *drag = new QDrag(source);
814 QMimeData *mimeData = new QMimeData;
815 mimeData->setText(selection());
816 drag->setMimeData(mimeData);
818 drag->exec(Qt::CopyAction);
821 /******** SELECTIONS ******************************************************************************/
823 void ChatScene::selectionToClipboard(QClipboard::Mode mode) {
827 stringToClipboard(selection(), mode);
830 void ChatScene::stringToClipboard(const QString &str_, QClipboard::Mode mode) {
832 // remove trailing linefeeds
833 if(str.endsWith('\n'))
837 case QClipboard::Clipboard:
838 QApplication::clipboard()->setText(str);
840 case QClipboard::Selection:
841 if(QApplication::clipboard()->supportsSelection())
842 QApplication::clipboard()->setText(str, QClipboard::Selection);
849 //!\brief Convert current selection to human-readable string.
850 QString ChatScene::selection() const {
851 //TODO Make selection format configurable!
852 if(hasGlobalSelection()) {
853 int start = qMin(_selectionStart, _selectionEnd);
854 int end = qMax(_selectionStart, _selectionEnd);
855 if(start < 0 || end >= _lines.count()) {
856 qDebug() << "Invalid selection range:" << start << end;
860 for(int l = start; l <= end; l++) {
861 if(_selectionMinCol == ChatLineModel::TimestampColumn)
862 result += _lines[l]->item(ChatLineModel::TimestampColumn)->data(MessageModel::DisplayRole).toString() + " ";
863 if(_selectionMinCol <= ChatLineModel::SenderColumn)
864 result += _lines[l]->item(ChatLineModel::SenderColumn)->data(MessageModel::DisplayRole).toString() + " ";
865 result += _lines[l]->item(ChatLineModel::ContentsColumn)->data(MessageModel::DisplayRole).toString() + "\n";
868 } else if(selectingItem())
869 return selectingItem()->selection();
873 bool ChatScene::hasSelection() const {
874 return hasGlobalSelection() || (selectingItem() && selectingItem()->hasSelection());
877 bool ChatScene::hasGlobalSelection() const {
878 return _selectionStart >= 0;
881 bool ChatScene::isGloballySelecting() const {
885 void ChatScene::clearGlobalSelection() {
886 if(hasGlobalSelection()) {
887 for(int l = qMin(_selectionStart, _selectionEnd); l <= qMax(_selectionStart, _selectionEnd); l++)
888 _lines[l]->setSelected(false);
889 _isSelecting = false;
890 _selectionStart = -1;
894 void ChatScene::clearSelection() {
895 clearGlobalSelection();
897 selectingItem()->clearSelection();
900 /******** *************************************************************************************/
902 void ChatScene::requestBacklog() {
903 MessageFilter *filter = qobject_cast<MessageFilter*>(model());
905 return filter->requestBacklog();
909 ChatLineModel::ColumnType ChatScene::columnByScenePos(qreal x) const {
910 if(x < _firstColHandle->x())
911 return ChatLineModel::TimestampColumn;
912 if(x < _secondColHandle->x())
913 return ChatLineModel::SenderColumn;
915 return ChatLineModel::ContentsColumn;
918 int ChatScene::rowByScenePos(qreal y) const {
919 QList<QGraphicsItem*> itemList = items(QPointF(0, y));
921 // ChatLine should be at the bottom of the list
922 for(int i = itemList.count()-1; i >= 0; i--) {
923 ChatLine *line = qgraphicsitem_cast<ChatLine *>(itemList.at(i));
930 void ChatScene::updateSceneRect(qreal width) {
931 if(_lines.isEmpty()) {
932 updateSceneRect(QRectF(0, 0, width, 0));
936 // we hide day change messages at the top by making the scene rect smaller
937 // and by calling QGraphicsItem::hide() on all leading day change messages
938 // the first one is needed to ensure proper scrollbar ranges
939 // the second for cases where the viewport is larger then the set scenerect
940 // (in this case the items are shown anyways)
941 if(_firstLineRow == -1) {
942 int numRows = model()->rowCount();
944 QModelIndex firstLineIdx;
945 while(_firstLineRow < numRows) {
946 firstLineIdx = model()->index(_firstLineRow, 0);
947 if((Message::Type)(model()->data(firstLineIdx, MessageModel::TypeRole).toInt()) != Message::DayChange)
949 _lines.at(_firstLineRow)->hide();
954 // the following call should be safe. If it crashes something went wrong during insert/remove
955 if(_firstLineRow < _lines.count()) {
956 ChatLine *firstLine = _lines.at(_firstLineRow);
957 ChatLine *lastLine = _lines.last();
958 updateSceneRect(QRectF(0, firstLine->pos().y(), width, lastLine->pos().y() + lastLine->height() - firstLine->pos().y()));
961 updateSceneRect(QRectF(0, 0, width, 0));
965 void ChatScene::updateSceneRect(const QRectF &rect) {
971 bool ChatScene::event(QEvent *e) {
972 if(e->type() == QEvent::ApplicationPaletteChange) {
973 _firstColHandle->setColor(QApplication::palette().windowText().color());
974 _secondColHandle->setColor(QApplication::palette().windowText().color());
976 return QGraphicsScene::event(e);
979 // ========================================
981 // ========================================
983 void ChatScene::loadWebPreview(ChatItem *parentItem, const QUrl &url, const QRectF &urlRect) {
987 if(webPreview.urlRect != urlRect)
988 webPreview.urlRect = urlRect;
990 if(webPreview.parentItem != parentItem)
991 webPreview.parentItem = parentItem;
993 if(webPreview.url != url) {
994 webPreview.url = url;
995 // prepare to load a different URL
996 if(webPreview.previewItem) {
997 if(webPreview.previewItem->scene())
998 removeItem(webPreview.previewItem);
999 delete webPreview.previewItem;
1000 webPreview.previewItem = 0;
1002 webPreview.previewState = WebPreview::NoPreview;
1005 if(webPreview.url.isEmpty())
1008 // qDebug() << Q_FUNC_INFO << webPreview.previewState;
1009 switch(webPreview.previewState) {
1010 case WebPreview::NoPreview:
1011 webPreview.previewState = WebPreview::NewPreview;
1012 webPreview.timer.start(500);
1014 case WebPreview::NewPreview:
1015 case WebPreview::DelayPreview:
1016 case WebPreview::ShowPreview:
1017 // we're already waiting for the next step or showing the preview
1019 case WebPreview::HidePreview:
1020 // we still have a valid preview
1021 webPreview.previewState = WebPreview::DelayPreview;
1022 webPreview.timer.start(1000);
1025 // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive();
1028 void ChatScene::webPreviewNextStep() {
1029 // qDebug() << Q_FUNC_INFO << webPreview.previewState;
1030 switch(webPreview.previewState) {
1031 case WebPreview::NoPreview:
1033 case WebPreview::NewPreview:
1034 Q_ASSERT(!webPreview.previewItem);
1035 webPreview.previewItem = new WebPreviewItem(webPreview.url);
1036 webPreview.previewState = WebPreview::DelayPreview;
1037 webPreview.timer.start(1000);
1039 case WebPreview::DelayPreview:
1040 Q_ASSERT(webPreview.previewItem);
1041 // calc position and show
1043 qreal previewY = webPreview.urlRect.bottom();
1044 qreal previewX = webPreview.urlRect.x();
1045 if(previewY + webPreview.previewItem->boundingRect().height() > sceneRect().bottom())
1046 previewY = webPreview.urlRect.y() - webPreview.previewItem->boundingRect().height();
1048 if(previewX + webPreview.previewItem->boundingRect().width() > sceneRect().width())
1049 previewX = sceneRect().right() - webPreview.previewItem->boundingRect().width();
1051 webPreview.previewItem->setPos(previewX, previewY);
1053 addItem(webPreview.previewItem);
1054 webPreview.previewState = WebPreview::ShowPreview;
1056 case WebPreview::ShowPreview:
1057 qWarning() << "ChatScene::webPreviewNextStep() called while in ShowPreview Step!";
1058 qWarning() << "removing preview";
1059 if(webPreview.previewItem && webPreview.previewItem->scene())
1060 removeItem(webPreview.previewItem);
1061 // Fall through to deletion!
1062 case WebPreview::HidePreview:
1063 if(webPreview.previewItem) {
1064 delete webPreview.previewItem;
1065 webPreview.previewItem = 0;
1067 webPreview.parentItem = 0;
1068 webPreview.url = QUrl();
1069 webPreview.urlRect = QRectF();
1070 webPreview.previewState = WebPreview::NoPreview;
1072 // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive();
1075 void ChatScene::clearWebPreview(ChatItem *parentItem) {
1076 // qDebug() << Q_FUNC_INFO << webPreview.previewState;
1077 switch(webPreview.previewState) {
1078 case WebPreview::NewPreview:
1079 webPreview.previewState = WebPreview::NoPreview; // we haven't loaded anything yet
1081 case WebPreview::ShowPreview:
1082 if(parentItem == 0 || webPreview.parentItem == parentItem) {
1083 if(webPreview.previewItem && webPreview.previewItem->scene())
1084 removeItem(webPreview.previewItem);
1086 // fall through into to set hidden state
1087 case WebPreview::DelayPreview:
1088 // we're just loading, so haven't shown the preview yet.
1089 webPreview.previewState = WebPreview::HidePreview;
1090 webPreview.timer.start(5000);
1092 case WebPreview::NoPreview:
1093 case WebPreview::HidePreview:
1096 // qDebug() << " new State:" << webPreview.previewState << webPreview.timer.isActive();
1100 // ========================================
1101 // end of webkit only
1102 // ========================================
1104 void ChatScene::showWebPreviewChanged() {
1105 ChatViewSettings settings;
1106 _showWebPreview = settings.showWebPreview();