QTableView中使用Delegate方式来实现对特定列的文本进行换行

 1 #pragma once
 2 
 3 #include <QStyledItemDelegate>
 4 #include <QPainter>
 5 
 6 class WrapTextDelegate : public QStyledItemDelegate
 7 {
 8     Q_OBJECT
 9 
10 public:
11     explicit WrapTextDelegate(QObject *parent = Q_NULLPTR);
12     ~WrapTextDelegate();
13 
14 public:
15     void paint(QPainter *painter, const QStyleOptionViewItem &option,
16         const QModelIndex &index) const override;
17 };

 1 #include "WrapTextDelegate.h"
 2 
 3 WrapTextDelegate::WrapTextDelegate(QObject *parent)
 4     : QStyledItemDelegate(parent)
 5 {
 6 }
 7 
 8 WrapTextDelegate::~WrapTextDelegate()
 9 {
10 }
11 
12 void WrapTextDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
13 {
14     (void)(index);
15     
16     QString text = index.model()->data(index, Qt::DisplayRole).toString();
17     //绘制文本  
18     painter->drawText(option.rect, Qt::TextWordWrap | Qt::AlignVCenter | Qt::AlignLeft, text);
19     //如果当前有焦点，就绘制一个焦点矩形，否则什么都不做  
20    // drawFocus(painter, option, option.rect);
21 
22 
23 }

1 auto delegate = new WrapTextDelegate();
2 
3 ui->table->setItemDelegateForColumn(column, delegate);