const qreal minContentsWidth = 200;
-ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, QObject *parent)
- : QGraphicsScene(parent),
+ChatScene::ChatScene(QAbstractItemModel *model, const QString &idString, qreal width, QObject *parent)
+ : QGraphicsScene(0, 0, width, 0, parent),
_idString(idString),
- _width(0),
- _height(0),
_model(model),
_singleBufferScene(false),
_selectingItem(0),
_singleBufferScene = filter->isSingleBufferFilter();
}
- 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(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);
- addItem(line);
- }
-
QtUiSettings s;
int defaultFirstColHandlePos = s.value("ChatView/DefaultFirstColumnHandlePos", 80).toInt();
int defaultSecondColHandlePos = s.value("ChatView/DefaultSecondColumnHandlePos", 200).toInt();
firstColHandle = new ColumnHandleItem(QtUi::style()->firstColumnSeparator());
addItem(firstColHandle);
+ firstColHandle->setXPos(firstColHandlePos);
+ connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+ connect(this, SIGNAL(sceneRectChanged(const QRectF &)), firstColHandle, SLOT(sceneRectChanged(const QRectF &)));
secondColHandle = new ColumnHandleItem(QtUi::style()->secondColumnSeparator());
addItem(secondColHandle);
-
- connect(firstColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+ secondColHandle->setXPos(secondColHandlePos);
connect(secondColHandle, SIGNAL(positionChanged(qreal)), this, SLOT(handlePositionChanged(qreal)));
+ connect(this, SIGNAL(sceneRectChanged(const QRectF &)), secondColHandle, SLOT(sceneRectChanged(const QRectF &)));
- firstColHandle->setXPos(firstColHandlePos);
- firstColHandle->setXLimits(0, secondColHandlePos);
- secondColHandle->setXPos(secondColHandlePos);
- secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
+ setHandleXLimits();
+
+ 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)));
- emit heightChanged(height());
+ if(model->rowCount() > 0)
+ rowsInserted(QModelIndex(), 0, model->rowCount() - 1);
}
ChatScene::~ChatScene() {
void ChatScene::rowsInserted(const QModelIndex &index, int start, int end) {
Q_UNUSED(index);
- // maybe make this more efficient by prepending stuff with negative yval
- // dunno if that's worth not guranteeing that 0 is on the top...
- // TODO bulk inserts, iterators
qreal h = 0;
- qreal y = 0;
- if(_width && start > 0)
+ qreal y = sceneRect().y();
+ qreal width = sceneRect().width();
+ bool atTop = true;
+ bool atBottom = false;
+ bool hasWidth = (width != 0);
+
+ if(start > 0) {
y = _lines.value(start - 1)->y() + _lines.value(start - 1)->height();
+ atTop = false;
+ }
+ if(start == _lines.count())
+ atBottom = true;
+
+ // right now this method doesn't properly handle messages that are inserted at an arbitrary point
+ Q_ASSERT(atBottom || atTop);
- for(int i = start; i <= end; i++) {
+ for(int i = end; i >= start; i--) {
ChatLine *line = new ChatLine(i, model());
- _lines.insert(i, line);
+ _lines.insert(start, line);
addItem(line);
- if(_width > 0) {
- line->setPos(0, y+h);
- h += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
+ if(hasWidth) {
+ if(atTop) {
+ h -= line->setGeometry(width);
+ line->setPos(0, y+h);
+ } else {
+ line->setPos(0, y+h);
+ h += line->setGeometry(width);
+ }
}
}
+
// 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;
- if(_selectionStart >= start) _selectionStart += offset;
- if(_selectionEnd >= start) _selectionEnd += offset;
- if(_firstSelectionRow >= start) _firstSelectionRow += offset;
- if(_lastSelectionRow >= start) _lastSelectionRow += offset;
- }
-
- if(h > 0) {
- _height += h;
- for(int i = end+1; i < _lines.count(); i++) {
- _lines.at(i)->moveBy(0, h);
- }
- setSceneRect(QRectF(0, 0, _width, _height));
- emit heightChanged(_height);
+ // update sceneRect
+ if(atBottom) {
+ setSceneRect(sceneRect().adjusted(0, 0, 0, h));
+ emit sceneHeightChanged(h);
+ } else {
+ setSceneRect(sceneRect().adjusted(0, h, 0, 0));
}
}
qreal h = 0; // total height of removed items;
+ bool atTop = (start == 0);
+ bool atBottom = (end == _lines.count() - 1);
+
+ // right now this method doesn't properly handle messages that are removed at an arbitrary point
+ Q_ASSERT(atBottom || atTop);
+
// remove items from scene
QList<ChatLine *>::iterator lineIter = _lines.begin() + start;
int lineCount = start;
_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);
+ // update sceneRect
+ if(atBottom) {
+ setSceneRect(sceneRect().adjusted(0, 0, 0, -h));
+ } else {
+ setSceneRect(sceneRect().adjusted(0, h, 0, 0));
}
}
-void ChatScene::setWidth(qreal w) {
- _width = w;
- _height = 0;
+void ChatScene::setWidth(qreal width, bool forceReposition) {
+ if(width == sceneRect().width() && !forceReposition)
+ return;
+
+ qreal oldHeight = sceneRect().height();
+ qreal y = sceneRect().y();
+ qreal linePos = y;
+
foreach(ChatLine *line, _lines) {
- line->setPos(0, _height);
- _height += line->setGeometry(_width, firstColHandlePos, secondColHandlePos);
+ line->setPos(0, linePos);
+ linePos += line->setGeometry(width);
}
- setSceneRect(QRectF(0, 0, w, _height));
- secondColHandle->setXLimits(firstColHandlePos, width() - minContentsWidth);
- emit heightChanged(_height);
-}
-void ChatScene::rectChanged(const QRectF &rect) {
- firstColHandle->sceneRectChanged(rect);
- secondColHandle->sceneRectChanged(rect);
+ qreal height = linePos - y;
+
+ setSceneRect(QRectF(0, y, width, height));
+ setHandleXLimits();
+
+ qreal dh = height - oldHeight;
+ if(dh > 0)
+ emit sceneHeightChanged(dh);
}
void ChatScene::handlePositionChanged(qreal xpos) {
s.setValue(QString("ChatView/DefaultFirstColumnHandlePos"), firstColHandlePos);
s.setValue(QString("ChatView/DefaultSecondColumnHandlePos"), secondColHandlePos);
- setWidth(width()); // readjust all chatlines
+ setWidth(width(), true); // 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() {
+ firstColHandle->setXLimits(0, secondColumnHandleRect().left());
+ secondColHandle->setXLimits(firstColumnHandleRect().right(), width() - minContentsWidth);
}
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(secondColumnHandleRect().right() + 1, pos.y())));
if(!contentItem) return;
int curRow = contentItem->row();
int curColumn;
- if(pos.x() > secondColHandlePos + secondColHandle->width()/2) curColumn = ChatLineModel::ContentsColumn;
+ if(pos.x() > secondColumnHandleRect().right()) curColumn = ChatLineModel::ContentsColumn;
else if(pos.x() > firstColHandlePos) curColumn = ChatLineModel::SenderColumn;
else curColumn = ChatLineModel::TimestampColumn;
_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;
- Q_ASSERT(_selectingItem); // this seems to not always be true, but I have no idea why
- // adding this assert to make sure the occasional segfault is caused by this
_selectingItem->continueSelecting(_selectingItem->mapFromScene(pos));
}
}
}
int ChatScene::sectionByScenePos(int x) {
- if(x < firstColHandlePos)
+ if(x < firstColHandle->x())
return ChatLineModel::TimestampColumn;
- if(x < secondColHandlePos)
+ if(x < secondColHandle->x())
return ChatLineModel::SenderColumn;
return ChatLineModel::ContentsColumn;