void ItemDelegate::setIndexWidget(const QModelIndex &index, ItemWidget *w)
{
reset(&m_cache[index.row()], w);
if (w == NULL)
return;
QWidget *ww = w->widget();
if (!m_antialiasing) {
QFont f = ww->font();
f.setStyleStrategy(QFont::NoAntialias);
ww->setFont(f);
foreach (QWidget *child, ww->findChildren<QWidget *>("item_child"))
child->setFont(f);
}
// Try to get proper size by showing item momentarily.
ww->show();
w->updateSize(m_maxSize, m_idealWidth);
ww->hide();
ww->installEventFilter(this);
w->setCurrent(m_view->currentIndex() == index);
emit rowSizeChanged();
}
bool ItemDelegate::eventFilter(QObject *, QEvent *event)
{
// resize event for items
if ( event->type() == QEvent::Resize )
emit rowSizeChanged();
return false;
}
void ItemDelegate::dataChanged(const QModelIndex &a, const QModelIndex &b)
{
// recalculating sizes of many items is expensive (when searching)
// - assume that highlighted (matched) text has same size
// - recalculate size only if item edited
int row = a.row();
if ( row == b.row() ) {
reset(&m_cache[row]);
emit rowSizeChanged();
}
}
void ClipboardBrowser::connectModelAndDelegate()
{
Q_ASSERT(&m != model());
// set new model
QAbstractItemModel *oldModel = model();
setModel(&m);
delete oldModel;
// delegate for rendering and editing items
setItemDelegate(&d);
connect( &m, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
SLOT(onDataChanged(QModelIndex,QModelIndex)) );
connect( &m, SIGNAL(tabNameChanged(QString)),
SLOT(onTabNameChanged(QString)) );
connect( &m, SIGNAL(unloaded()),
SLOT(onModelUnloaded()) );
// update on change
connect( &m, SIGNAL(rowsInserted(QModelIndex, int, int)),
SLOT(onModelDataChanged()) );
connect( &m, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
SLOT(onModelDataChanged()) );
connect( &m, SIGNAL(rowsInserted(QModelIndex, int, int)),
SLOT(onItemCountChanged()) );
connect( &m, SIGNAL(rowsRemoved(QModelIndex,int,int)),
SLOT(onItemCountChanged()) );
connect( &m, SIGNAL(rowsAboutToBeMoved(QModelIndex, int, int, QModelIndex, int)),
SLOT(onModelDataChanged()) );
connect( &m, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
SLOT(onModelDataChanged()) );
connect( &d, SIGNAL(rowSizeChanged()),
SLOT(updateCurrentPage()) );
connect( &m, SIGNAL(rowsInserted(QModelIndex, int, int)),
&d, SLOT(rowsInserted(QModelIndex, int, int)) );
connect( &m, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
&d, SLOT(rowsRemoved(QModelIndex,int,int)) );
connect( &m, SIGNAL(rowsAboutToBeMoved(QModelIndex, int, int, QModelIndex, int)),
&d, SLOT(rowsMoved(QModelIndex, int, int, QModelIndex, int)) );
connect( &m, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
&d, SLOT(dataChanged(QModelIndex,QModelIndex)) );
updateCurrentPage();
}
