继承QStyledItemDelegate 进度条控件重绘

最新推荐文章于 2024-06-13 15:33:15 发布

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最新推荐文章于 2024-06-13 15:33:15 发布

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分类专栏： QT5

本文链接：https://blog.youkuaiyun.com/u012023801/article/details/47424751

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创建WidgetDelegate类，继承自QStyledItemDelegate。在paint()函数中进行绘制，当列索引为1时，获取进度值并设置QStyleOptionProgressBar选项，然后使用QApplication的style()调用drawControl绘制进度条控件。

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We create the WidgetDelegate class, which inherits from QStyledItemDelegate. We do the drawing in the paint() function:

void WidgetDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
if (index.column() == 1) {
int progress = index.data().toInt();

QStyleOptionProgressBar progressBarOption;
progressBarOption.rect = option.rect;
progressBarOption.minimum = 0;
progressBarOption.maximum = 100;
progressBarOption.progress = progress;
progressBarOption.text = QString::number(progress) + "%";
progressBarOption.textVisible = true;

QApplication::style()->drawControl(QStyle::CE_ProgressBar,
&progressBarOption, painter);
} else
QStyledItemDelegate::paint(painter, option, index);