本文整理汇总了C++中QContent::fileKnown方法的典型用法代码示例。如果您正苦于以下问题：C++ QContent::fileKnown方法的具体用法？C++ QContent::fileKnown怎么用？C++ QContent::fileKnown使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QContent的用法示例。
在下文中一共展示了QContent::fileKnown方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: paint
void ThumbnailDelegate::paint( QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index ) const
{
Q_ASSERT(index.isValid());
const QContentSetModel *model = qobject_cast< const QContentSetModel * >( index.model() );
Q_ASSERT(model);
QStyleOptionViewItem opt = option;
// set text alignment
opt.displayAlignment = Qt::AlignCenter;
// do layout
QContent content = model->content( index );
QPixmap pixmap;
if( content.fileKnown() ) {
pixmap = repository_->thumbnail( ThumbnailRequest( index, content.file(), option.decorationSize, content.lastUpdated() ) );
}
if( pixmap.isNull() ) {
QIcon icon = qvariant_cast<QIcon>(model->data(index, Qt::DecorationRole));
pixmap = icon.pixmap( option.decorationSize );
}
QRect pixmapRect = QRect(0, 0, option.decorationSize.width(),
option.decorationSize.height());
QFontMetrics fontMetrics(opt.font);
QString text = model->data(index, Qt::DisplayRole).toString();
QRect textRect(0, 0, option.decorationSize.width(), fontMetrics.lineSpacing());
QVariant value = model->data(index, Qt::CheckStateRole);
QRect checkRect = check(opt, opt.rect, value);
Qt::CheckState checkState = static_cast<Qt::CheckState>(value.toInt());
doLayout(opt, &checkRect, &pixmapRect, &textRect, false);
// draw the background color
if (option.showDecorationSelected && (option.state & QStyle::State_Selected)) {
QPalette::ColorGroup cg = option.state & QStyle::State_Enabled
? QPalette::Normal : QPalette::Disabled;
painter->fillRect(option.rect, option.palette.brush(cg, QPalette::Highlight));
} else {
value = model->data(index, Qt::BackgroundColorRole);
if (value.isValid() && qvariant_cast<QColor>(value).isValid())
painter->fillRect(option.rect, qvariant_cast<QColor>(value));
}
// draw the item
drawCheck(painter, opt, checkRect, checkState);
drawDecoration(painter, opt, pixmapRect, pixmap);
drawDisplay(painter, opt, textRect, text);
drawFocus(painter, opt, textRect);
}