void ChatLog::mouseMoveEvent(QMouseEvent* ev)
{
QGraphicsView::mouseMoveEvent(ev);
QPointF scenePos = mapToScene(ev->pos());
if (ev->buttons() & Qt::LeftButton)
{
//autoscroll
if (ev->pos().y() < 0)
selectionScrollDir = Up;
else if (ev->pos().y() > height())
selectionScrollDir = Down;
else
selectionScrollDir = NoDirection;
//select
if (selectionMode == None && (clickPos - ev->pos()).manhattanLength() > QApplication::startDragDistance())
{
QPointF sceneClickPos = mapToScene(clickPos.toPoint());
ChatLine::Ptr line = findLineByPosY(scenePos.y());
ChatLineContent* content = getContentFromPos(sceneClickPos);
if (content)
{
selClickedRow = content->getRow();
selClickedCol = content->getColumn();
selFirstRow = content->getRow();
selLastRow = content->getRow();
content->selectionStarted(sceneClickPos);
selectionMode = Precise;
// ungrab mouse grabber
if (scene->mouseGrabberItem())
scene->mouseGrabberItem()->ungrabMouse();
}
else if (line.get())
{
selClickedRow = line->getRow();
selFirstRow = selClickedRow;
selLastRow = selClickedRow;
selectionMode = Multi;
}
}
if (selectionMode != None)
{
ChatLineContent* content = getContentFromPos(scenePos);
ChatLine::Ptr line = findLineByPosY(scenePos.y());
int row;
if (content)
{
row = content->getRow();
int col = content->getColumn();
if (row == selClickedRow && col == selClickedCol)
{
selectionMode = Precise;
content->selectionMouseMove(scenePos);
selGraphItem->hide();
}
else if (col != selClickedCol)
{
selectionMode = Multi;
lines[selClickedRow]->selectionCleared();
}
}
else if (line.get())
{
row = line->getRow();
if (row != selClickedRow)
{
selectionMode = Multi;
lines[selClickedRow]->selectionCleared();
}
}
else
{
return;
}
if (row >= selClickedRow)
selLastRow = row;
if (row <= selClickedRow)
selFirstRow = row;
updateMultiSelectionRect();
}
emit selectionChanged();
}
}
bool ChatLine::lessThanRowIndex(const ChatLine::Ptr& lhs, const ChatLine::Ptr& rhs)
{
return lhs->getRow() < rhs->getRow();
}