_selectingItem(0),
_selectionStart(-1),
_isSelecting(false),
- _fetchingBacklog(false)
+ _lastBacklogSize(0)
{
MessageFilter *filter = qobject_cast<MessageFilter*>(model);
if(filter) {
connect(this, SIGNAL(sceneRectChanged(const QRectF &)), this, SLOT(rectChanged(const QRectF &)));
- connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)), this, SLOT(rowsInserted(const QModelIndex &, int, int)));
- connect(model, SIGNAL(modelAboutToBeReset()), this, SLOT(modelReset()));
+ connect(model, SIGNAL(rowsInserted(const QModelIndex &, int, int)),
+ this, SLOT(rowsInserted(const QModelIndex &, int, int)));
+ connect(model, SIGNAL(rowsAboutToBeRemoved(const QModelIndex &, int, int)),
+ this, SLOT(rowsAboutToBeRemoved(const QModelIndex &, int, int)));
+
for(int i = 0; i < model->rowCount(); i++) {
ChatLine *line = new ChatLine(i, model);
_lines.append(line);
secondColHandlePos = s.value(QString("ChatView/%1/SecondColumnHandlePos").arg(_idString),
defaultSecondColHandlePos).toInt();
- firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator()); addItem(firstColHandle);
- secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator()); addItem(secondColHandle);
+ firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator());
+ addItem(firstColHandle);
+
+ secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator());
+ addItem(secondColHandle);
connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
firstColHandle->setXPos(firstColHandlePos);
- firstColHandle->setXLimits(0, secondColHandlePos);
secondColHandle->setXPos(secondColHandlePos);
- secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
+ setHandleXLimits();
emit heightChanged(height());
}
ChatScene::~ChatScene() {
-
}
void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
// TODO bulk inserts, iterators
qreal h = 0;
qreal y = 0;
- if(_width && start > 0) y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
+ if(_width && start > 0)
+ y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
+
for(int i = start; i <= end; i++) {
ChatLine *line = new ChatLine(i, model());
_lines.insert(i, line);
if(h > 0) {
_height += h;
for(int i = end+1; i < _lines.count(); i++) {
- _lines.value(i)->moveBy(0, h);
+ _lines.at(i)->moveBy(0, h);
}
setSceneRect(QRectF(0, 0, _width, _height));
emit heightChanged(_height);
}
-
- requestBacklogIfNeeded();
}
-void ChatScene::modelReset() {
- foreach(ChatLine *line, _lines) {
- removeItem(line);
- delete line;
+void ChatScene::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end) {
+ Q_UNUSED(parent);
+
+ qreal h = 0; // total height of removed items;
+
+ // remove items from scene
+ QList<ChatLine *>::iterator lineIter = _lines.begin() + start;
+ int lineCount = start;
+ while(lineIter != _lines.end() && lineCount <= end) {
+ 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 -= offset;
+ if(_selectionEnd >= start)
+ _selectionEnd -= offset;
+ if(_firstSelectionRow >= start)
+ _firstSelectionRow -= offset;
+ if(_lastSelectionRow >= start)
+ _lastSelectionRow -= offset;
+ }
+
+ // reposition remaining chatlines
+ if(h > 0) {
+ Q_ASSERT(_height >= h);
+ _height -= h;
+ for(int i = start; i < _lines.count(); i++) {
+ _lines.at(i)->moveBy(0, -h);
+ }
+ setSceneRect(QRectF(0, 0, _width, _height));
+ emit heightChanged(_height);
}
- _lines.clear();
- setSceneRect(QRectF(0, 0, _width, 0));
}
void ChatScene::setWidth(qreal w) {
_height += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
}
setSceneRect(QRectF(0, 0, w, _height));
- secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
+ setHandleXLimits();
emit heightChanged(_height);
}
setWidth(width()); // readjust all chatlines
// we get ugly redraw errors if we don't update this explicitly... :(
// width() should be the same for both handles, so just use firstColHandle regardless
- update(qMin(oldx, xpos) - firstColHandle->width()/2, 0, qMax(oldx, xpos) + firstColHandle->width()/2, height());
+ update(qMin(oldx, xpos), 0, qMax(oldx, xpos) + firstColHandle->width(), height());
+}
+
+void ChatScene::setHandleXLimits() {
+ qreal firstsepwidth = QtUi::style()->firstColumnSeparator();
+ qreal secondsepwidth = QtUi::style()->secondColumnSeparator();
+ firstColHandle->setXLimits(-firstsepwidth/2, secondColHandlePos - firstsepwidth/2);
+ secondColHandle->setXLimits(firstColHandlePos + firstsepwidth - secondsepwidth/2, width() - minContentsWidth - secondsepwidth/2);
}
void ChatScene::setSelectingItem(ChatItem *item) {
void ChatScene::updateSelection(const QPointF &pos) {
// This is somewhat hacky... we look at the contents item that is at the cursor's y position (ignoring x), since
// it has the full height. From this item, we can then determine the row index and hence the ChatLine.
- ChatItem *contentItem = static_cast<ChatItem *>(itemAt(QPointF(secondColHandlePos + secondColHandle->width()/2, pos.y())));
+ ChatItem *contentItem = static_cast<ChatItem *>(itemAt(QPointF(secondColHandlePos + secondColHandle->width(), pos.y())));
if(!contentItem) return;
int curRow = contentItem->row();
_lastSelectionRow = curRow;
if(newstart == newend && minColumn == ChatLineModel::ContentsColumn) {
+ if(!_selectingItem) {
+ qWarning() << "WARNING: ChatScene::updateSelection() has a null _selectingItem, this should never happen! Please report.";
+ return;
+ }
_lines[curRow]->setSelected(false);
_isSelecting = false;
_selectingItem->continueSelecting(_selectingItem->mapFromScene(pos));
_lines[l]->setSelected(false);
}
_selectionStart = -1;
- event->accept();
+ QGraphicsScene::mousePressEvent(event); // so we can start a new local selection
} else {
QGraphicsScene::mousePressEvent(event);
}
return result;
}
-void ChatScene::setIsFetchingBacklog(bool fetch) {
- if(!isBacklogFetchingEnabled()) return;
-
- if(!fetch) {
- _fetchingBacklog = false;
- } else {
- _fetchingBacklog = true;
- requestBacklogIfNeeded();
- }
-}
-
-void ChatScene::requestBacklogIfNeeded() {
- const int REQUEST_COUNT = 50;
-
- if(!isBacklogFetchingEnabled() || !isFetchingBacklog() || !model()->rowCount()) return;
-
- MsgId msgId = model()->data(model()->index(0, 0), ChatLineModel::MsgIdRole).value<MsgId>();
- if(!_lastBacklogOffset.isValid() || (msgId < _lastBacklogOffset && _lastBacklogSize + REQUEST_COUNT <= model()->rowCount())) {
- Client::backlogManager()->requestBacklog(bufferForBacklogFetching(), REQUEST_COUNT, msgId.toInt());
- _lastBacklogOffset = msgId;
- _lastBacklogSize = model()->rowCount();
+void ChatScene::requestBacklog() {
+ static const int REQUEST_COUNT = 50;
+ int backlogSize = model()->rowCount();
+ if(isSingleBufferScene() && backlogSize != 0 && _lastBacklogSize + REQUEST_COUNT <= backlogSize) {
+ QModelIndex msgIdx = model()->index(0, 0);
+ MsgId msgId = model()->data(msgIdx, ChatLineModel::MsgIdRole).value<MsgId>();
+ BufferId bufferId = model()->data(msgIdx, ChatLineModel::BufferIdRole).value<BufferId>();
+ _lastBacklogSize = backlogSize;
+ Client::backlogManager()->requestBacklog(bufferId, REQUEST_COUNT, msgId.toInt());
}
}
int ChatScene::sectionByScenePos(int x) {
- if(x < firstColHandlePos)
+ if(x < firstColHandlePos + firstColHandle->width()/2)
return ChatLineModel::TimestampColumn;
- if(x < secondColHandlePos)
+ if(x < secondColHandlePos + secondColHandle->width()/2)
return ChatLineModel::SenderColumn;
return ChatLineModel::ContentsColumn;