qlistview自定义控件_是否可以将自定义小部件添加到QListView中?

是否可以将自定义小部件添加到QListView中?

请阅读以下内容:

我想以上述格式显示每个日志消息

解决方案

为了达到预期的结果并避免性能问题,即使数据日志很长,也可以使用

QListView

使用自定义委托:

例子

示例的基本部分是委托在列表视图中绘制项的方式:

void Delegate::paint(QPainter *painter, const QStyleOptionViewItem &option,

const QModelIndex &index) const

{

QStyleOptionViewItem opt(option);

initStyleOption(&opt, index);

const QPalette &palette(opt.palette);

const QRect &rect(opt.rect);

const QRect &contentRect(rect.adjusted(m_ptr->margins.left(),

m_ptr->margins.top(),

-m_ptr->margins.right(),

-m_ptr->margins.bottom()));

const bool lastIndex = (index.model()->rowCount() - 1) == index.row();

const bool hasIcon = !opt.icon.isNull();

const int bottomEdge = rect.bottom();

QFont f(opt.font);

f.setPointSize(m_ptr->timestampFontPointSize(opt.font));

painter->save();

painter->setClipping(true);

painter->setClipRect(rect);

painter->setFont(opt.font);

// Draw background

painter->fillRect(rect, opt.state & QStyle::State_Selected ?

palette.highlight().color() :

palette.light().color());

// Draw bottom line

painter->setPen(lastIndex ? palette.dark().color()

: palette.mid().color());

painter->drawLine(lastIndex ? rect.left() : m_ptr->margins.left(),

bottomEdge, rect.right(), bottomEdge);

// Draw message icon

if (hasIcon)

painter->drawPixmap(contentRect.left(), contentRect.top(),

opt.icon.pixmap(m_ptr->iconSize));

// Draw timestamp

QRect timeStampRect(m_ptr->timestampBox(opt, index));

timeStampRect.moveTo(m_ptr->margins.left() + m_ptr->iconSize.width()

+ m_ptr->spacingHorizontal, contentRect.top());

painter->setFont(f);

painter->setPen(palette.text().color());

painter->drawText(timeStampRect, Qt::TextSingleLine,

index.data(Qt::UserRole).toString());

// Draw message text

QRect messageRect(m_ptr->messageBox(opt));

messageRect.moveTo(timeStampRect.left(), timeStampRect.bottom()

+ m_ptr->spacingVertical);

painter->setFont(opt.font);

painter->setPen(palette.windowText().color());

painter->drawText(messageRect, Qt::TextSingleLine, opt.text);

painter->restore();

}

示例的完整代码可在

GitHub

.

结果