Qt 之模型/视图（自定义进度条）

2023-04-23 00:31| 来源: 网络整理| 查看: 265

void ProgressBarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const{ QStyleOptionViewItem viewOption(option); initStyleOption(&viewOption, index); if (option.state.testFlag(QStyle::State_HasFocus)) viewOption.state = viewOption.state ^ QStyle::State_HasFocus;

QStyledItemDelegate::paint(painter, viewOption, index);

if (index.column() == FILE_DOWNLOAD_PROGRESS_COLUMN) { int nProgress = index.model()->data(index, Qt::UserRole).toInt(); int nLeft = 8; int nTop = 8; int nWidth = option.rect.width() - 2 * nLeft; int nHeight = option.rect.height() - 2 * nTop;

// 设置进度条的风格 QStyleOptionProgressBar progressBarOption; progressBarOption.initFrom(option.widget); // 设置进度条显示的区域 progressBarOption.rect = QRect(option.rect.left() + nLeft, option.rect.top() + nTop, nWidth, nHeight); // 设置最小值 progressBarOption.minimum = 0; // 设置最大值 progressBarOption.maximum = 100; // 设置对齐方式 progressBarOption.textAlignment = Qt::AlignCenter; // 设置进度 progressBarOption.progress = nProgress; // 设置文本（百分比） progressBarOption.text = QString("%1%").arg(nProgress); // 设置文本可见 progressBarOption.textVisible = true;

QProgressBar progressBar;

//绘制进度条 QApplication::style()->drawControl(QStyle::CE_ProgressBar, &progressBarOption, painter, &progressBar);

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