-void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
- Q_UNUSED(index);
-
-
-// QModelIndex sidx = model()->index(start, 2);
-// QModelIndex eidx = model()->index(end, 2);
-// qDebug() << "rowsInserted:";
-// if(start > 0) {
-// QModelIndex ssidx = model()->index(start - 1, 2);
-// qDebug() << "Start--:" << start - 1 << ssidx.data(MessageModel::MsgIdRole).value<MsgId>()
-// << ssidx.data(Qt::DisplayRole).toString();
-// }
-// qDebug() << "Start:" << start << sidx.data(MessageModel::MsgIdRole).value<MsgId>()
-// << sidx.data(Qt::DisplayRole).toString();
-// qDebug() << "End:" << end << eidx.data(MessageModel::MsgIdRole).value<MsgId>()
-// << eidx.data(Qt::DisplayRole).toString();
-// if(end + 1 < model()->rowCount()) {
-// QModelIndex eeidx = model()->index(end + 1, 2);
-// qDebug() << "End++:" << end + 1 << eeidx.data(MessageModel::MsgIdRole).value<MsgId>()
-// << eeidx.data(Qt::DisplayRole).toString();
-// }
-
- qreal h = 0;
- qreal y = 0;
- qreal width = _sceneRect.width();
- bool atBottom = (start == _lines.count());
- bool atTop = !atBottom && (start == 0);
- bool moveTop = false;
-
- if(start < _lines.count()) {
- y = _lines.value(start)->y();
- } else if(atBottom && !_lines.isEmpty()) {
- y = _lines.last()->y() + _lines.last()->height();
- }
-
- qreal contentsWidth = width - secondColumnHandle()->sceneRight();
- qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
- qreal timestampWidth = firstColumnHandle()->sceneLeft();
- QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
- QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
-
- if(atTop) {
- for(int i = end; i >= start; i--) {
- ChatLine *line = new ChatLine(i, model(),
- width,
- timestampWidth, senderWidth, contentsWidth,
- senderPos, contentsPos);
- h += line->height();
- line->setPos(0, y-h);
- _lines.insert(start, line);
- addItem(line);
- }
- } else {
- for(int i = start; i <= end; i++) {
- ChatLine *line = new ChatLine(i, model(),
- width,
- timestampWidth, senderWidth, contentsWidth,
- senderPos, contentsPos);
- line->setPos(0, y+h);
- h += line->height();
- _lines.insert(i, line);
- addItem(line);
- }
- }
-
- // update existing items
- for(int i = end+1; i < _lines.count(); i++) {
- _lines[i]->setRow(i);
- }
-
- // update selection
- if(_selectionStart >= 0) {
- int offset = end - start + 1;
- int oldStart = _selectionStart;
- if(_selectionStart >= start)
- _selectionStart += offset;
- if(_selectionEnd >= start) {
- _selectionEnd += offset;
- if(_selectionStart == oldStart)
- for(int i = start; i < start + offset; i++)
- _lines[i]->setSelected(true);
- }
- if(_firstSelectionRow >= start)
- _firstSelectionRow += offset;
- }
-
- // neither pre- or append means we have to do dirty work: move items...
- int moveStart = 0;
- int moveEnd = _lines.count() - 1;
- qreal offset = h;
- if(!(atTop || atBottom)) {
- // move top means: moving 0 to end (aka: end + 1)
- // move top means: moving end + 1 to _lines.count() - 1 (aka: _lines.count() - (end + 1)
- if(end + 1 < _lines.count() - end - 1) {
- // move top part
- moveTop = true;
- offset = -offset;
- moveEnd = end;
- } else {
- // move bottom part
- moveStart = end + 1;
- }
- ChatLine *line = 0;
- for(int i = moveStart; i <= moveEnd; i++) {
- line = _lines.at(i);
- line->setPos(0, line->pos().y() + offset);
- }
- }
-
- // check if all went right
- Q_ASSERT(start == 0 || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
-// if(start != 0) {
-// if(_lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() != _lines.at(start)->pos().y()) {
-// qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end;
-// 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();
-// qDebug() << "line[start]" << _lines.at(start)->pos().y();
-// qDebug() << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset;
-// Q_ASSERT(false)
-// }
-// }
- Q_ASSERT(end + 1 == _lines.count() || _lines.at(end)->pos().y() + _lines.at(end)->height() == _lines.at(end + 1)->pos().y());
-// if(end + 1 < _lines.count()) {
-// if(_lines.at(end)->pos().y() + _lines.at(end)->height() != _lines.at(end + 1)->pos().y()) {
-// qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end;
-// qDebug() << "line[end]:" << _lines.at(end)->pos().y() << "+" << _lines.at(end)->height() << "=" << _lines.at(end)->pos().y() + _lines.at(end)->height();
-// qDebug() << "line[end+1]" << _lines.at(end + 1)->pos().y();
-// qDebug() << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset;
-// Q_ASSERT(false);
-// }
-// }
-
- if(!atBottom) {
- if(start < _firstLineRow) {
- int prevFirstLineRow = _firstLineRow + (end - start + 1);
- for(int i = end + 1; i < prevFirstLineRow; i++) {
- _lines.at(i)->show();
- }
- }
- // force new search for first proper line
+void ChatScene::rowsInserted(const QModelIndex& index, int start, int end)
+{
+ Q_UNUSED(index);
+
+ // QModelIndex sidx = model()->index(start, 2);
+ // QModelIndex eidx = model()->index(end, 2);
+ // qDebug() << "rowsInserted:";
+ // if(start > 0) {
+ // QModelIndex ssidx = model()->index(start - 1, 2);
+ // qDebug() << "Start--:" << start - 1 << ssidx.data(MessageModel::MsgIdRole).value<MsgId>()
+ // << ssidx.data(Qt::DisplayRole).toString();
+ // }
+ // qDebug() << "Start:" << start << sidx.data(MessageModel::MsgIdRole).value<MsgId>()
+ // << sidx.data(Qt::DisplayRole).toString();
+ // qDebug() << "End:" << end << eidx.data(MessageModel::MsgIdRole).value<MsgId>()
+ // << eidx.data(Qt::DisplayRole).toString();
+ // if(end + 1 < model()->rowCount()) {
+ // QModelIndex eeidx = model()->index(end + 1, 2);
+ // qDebug() << "End++:" << end + 1 << eeidx.data(MessageModel::MsgIdRole).value<MsgId>()
+ // << eeidx.data(Qt::DisplayRole).toString();
+ // }
+
+ qreal h = 0;
+ qreal y = 0;
+ qreal width = _sceneRect.width();
+ bool atBottom = (start == _lines.count());
+ bool atTop = !atBottom && (start == 0);
+
+ if (start < _lines.count()) {
+ y = _lines.value(start)->y();
+ }
+ else if (atBottom && !_lines.isEmpty()) {
+ y = _lines.last()->y() + _lines.last()->height();
+ }
+
+ qreal contentsWidth = width - secondColumnHandle()->sceneRight();
+ qreal senderWidth = secondColumnHandle()->sceneLeft() - firstColumnHandle()->sceneRight();
+ qreal timestampWidth = firstColumnHandle()->sceneLeft();
+ QPointF contentsPos(secondColumnHandle()->sceneRight(), 0);
+ QPointF senderPos(firstColumnHandle()->sceneRight(), 0);
+
+ if (atTop) {
+ for (int i = end; i >= start; i--) {
+ auto* line = new ChatLine(i, model(), width, timestampWidth, senderWidth, contentsWidth, senderPos, contentsPos);
+ h += line->height();
+ line->setPos(0, y - h);
+ _lines.insert(start, line);
+ addItem(line);
+ }
+ }
+ else {
+ for (int i = start; i <= end; i++) {
+ auto* line = new ChatLine(i, model(), width, timestampWidth, senderWidth, contentsWidth, senderPos, contentsPos);
+ line->setPos(0, y + h);
+ h += line->height();
+ _lines.insert(i, line);
+ addItem(line);
+ }
+ }
+
+ // update existing items
+ for (int i = end + 1; i < _lines.count(); i++) {
+ _lines[i]->setRow(i);
+ }
+
+ // update selection
+ if (_selectionStart >= 0) {
+ int offset = end - start + 1;
+ int oldStart = _selectionStart;
+ if (_selectionStart >= start)
+ _selectionStart += offset;
+ if (_selectionEnd >= start) {
+ _selectionEnd += offset;
+ if (_selectionStart == oldStart)
+ for (int i = start; i < start + offset; i++)
+ _lines[i]->setSelected(true);
+ }
+ if (_firstSelectionRow >= start)
+ _firstSelectionRow += offset;
+ }
+
+ // neither pre- or append means we have to do dirty work: move items...
+ if (!(atTop || atBottom)) {
+ ChatLine* line = nullptr;
+ for (int i = 0; i <= end; i++) {
+ line = _lines.at(i);
+ line->setPos(0, line->pos().y() - h);
+ if (line == markerLine()->chatLine())
+ markerLine()->setPos(line->pos() + QPointF(0, line->height()));
+ }
+ }
+
+ // check if all went right
+ Q_ASSERT(start == 0 || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
+ // if(start != 0) {
+ // if(_lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() != _lines.at(start)->pos().y()) {
+ // qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end;
+ // 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(); qDebug() << "line[start]" << _lines.at(start)->pos().y(); qDebug()
+ // << "needed moving:" << !(atTop || atBottom) << moveTop << moveStart << moveEnd << offset; Q_ASSERT(false)
+ // }
+ // }
+ Q_ASSERT(end + 1 == _lines.count() || _lines.at(end)->pos().y() + _lines.at(end)->height() == _lines.at(end + 1)->pos().y());
+ // if(end + 1 < _lines.count()) {
+ // if(_lines.at(end)->pos().y() + _lines.at(end)->height() != _lines.at(end + 1)->pos().y()) {
+ // qDebug() << "lines:" << _lines.count() << "start:" << start << "end:" << end;
+ // qDebug() << "line[end]:" << _lines.at(end)->pos().y() << "+" << _lines.at(end)->height() << "=" << _lines.at(end)->pos().y() +
+ // _lines.at(end)->height(); qDebug() << "line[end+1]" << _lines.at(end + 1)->pos().y(); qDebug() << "needed moving:" << !(atTop
+ // || atBottom) << moveTop << moveStart << moveEnd << offset; Q_ASSERT(false);
+ // }
+ // }
+
+ if (!atBottom) {
+ if (start < _firstLineRow) {
+ int prevFirstLineRow = _firstLineRow + (end - start + 1);
+ for (int i = end + 1; i < prevFirstLineRow; i++) {
+ _lines.at(i)->show();
+ }
+ }
+ // force new search for first proper line
+ _firstLineRow = -1;
+ }
+ updateSceneRect();
+ if (atBottom) {
+ emit lastLineChanged(_lines.last(), h);
+ }
+
+ // now move the marker line if necessary. we don't need to do anything if we appended lines though...
+ if (!_markerLineValid)
+ setMarkerLine();
+}
+
+void ChatScene::rowsAboutToBeRemoved(const QModelIndex& parent, int start, int end)
+{
+ Q_UNUSED(parent);
+
+ qreal h = 0; // total height of removed items;
+
+ bool atTop = (start == 0);
+ bool atBottom = (end == _lines.count() - 1);
+
+ // clear selection
+ if (_selectingItem) {
+ int row = _selectingItem->row();
+ if (row >= start && row <= end)
+ setSelectingItem(nullptr);
+ }
+
+ // remove items from scene
+ QList<ChatLine*>::iterator lineIter = _lines.begin() + start;
+ int lineCount = start;
+ while (lineIter != _lines.end() && lineCount <= end) {
+ if ((*lineIter) == markerLine()->chatLine())
+ markerLine()->setChatLine(nullptr);
+ h += (*lineIter)->height();
+ delete *lineIter;
+ lineIter = _lines.erase(lineIter);
+ lineCount++;
+ }
+
+ // update rows of remaining chatlines
+ for (int i = start; i < _lines.count(); i++) {
+ _lines.at(i)->setRow(i);
+ }
+
+ // update selection
+ if (_selectionStart >= 0) {
+ int offset = end - start + 1;
+ if (_selectionStart >= start)
+ _selectionStart = qMax(_selectionStart - offset, start);
+ if (_selectionEnd >= start)
+ _selectionEnd -= offset;
+ if (_firstSelectionRow >= start)
+ _firstSelectionRow -= offset;
+
+ if (_selectionEnd < _selectionStart) {
+ _isSelecting = false;
+ _selectionStart = -1;
+ }
+ }
+
+ // neither removing at bottom or top means we have to move items...
+ if (!(atTop || atBottom)) {
+ qreal offset = h;
+ int moveStart = 0;
+ int moveEnd = _lines.count() - 1;
+ if (start < _lines.count() - start) {
+ // move top part
+ moveEnd = start - 1;
+ }
+ else {
+ // move bottom part
+ moveStart = start;
+ offset = -offset;
+ }
+ ChatLine* line = nullptr;
+ for (int i = moveStart; i <= moveEnd; i++) {
+ line = _lines.at(i);
+ line->setPos(0, line->pos().y() + offset);
+ }
+ }
+
+ Q_ASSERT(start == 0 || start >= _lines.count()
+ || _lines.at(start - 1)->pos().y() + _lines.at(start - 1)->height() == _lines.at(start)->pos().y());
+
+ // update sceneRect
+ // when searching for the first non-date-line we have to take into account that our
+ // model still contains the just removed lines so we cannot simply call updateSceneRect()
+ int numRows = model()->rowCount();
+ QModelIndex firstLineIdx;