QTableView中添加按键或者其他控件

英雄不问，饮水思源~~~~~~~~~~~~~~~~~~~~~

http://blog.csdn.net/liang19890820/article/details/50974059

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

一、基于继承 QStyledItemDelegate 代理添加按键

可以设置table view中按键的样式表

http://blog.csdn.net/liang19890820/article/details/50974059

二、基于继承 QItemDelegate 的代理类添加按键

#include <QApplication>

#include <QMouseEvent>

#include <QDialog>

#include <QPainter>

#include <QStyleOption>

#include <QDesktopWidget>

#include <QDebug>

#include <QMap>

#include <QItemDelegate>

1、创建自己的代理类

buttondelegate.h

class ButtonDelegate : public QItemDelegate

{

Q_OBJECT

public:

explicit ButtonDelegate( QObject *parent = 0);

//重写绘图事件

void paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;

//重写事件过滤

bool editorEvent( QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index);

private:

QMap< QModelIndex, QStyleOptionButton*> m_btns;

};

buttondelegate.cpp

int FILE_OPERATE_COLUMN = 4;// 按键所在列

ButtonDelegate::ButtonDelegate( QObject *parent) :

QItemDelegate(parent)

{}

void ButtonDelegate:: paint( QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const

{

QStyleOptionButton* button = m_btns.value(index); //在特定的索引处绘制按键，这个变量临时存储绘制的按键信息

//如果为按键列绘制按键

if ( index . column () == FILE_OPERATE_COLUMN) {

//非常重要！该条件最好为判断索引与需要代理的列！因为这样绘制的按键会随滑动条进行重绘！

button = new QStyleOptionButton();//绘制存button的参数的对象

button-> features = QStyleOptionButton:: None; //设置为pushButton类型，可以按下

button-> rect = option. rect.adjusted( 1, 1, - 1, - 1);//绘制尺寸

button-> text = tr( "开始检验");

button-> state |= QStyle:: State_Enabled;

( const_cast< ButtonDelegate *>( this))-> m_btns.insert(index, button);//将绘制的按键放入Qmap

}

painter->save();

if (option. state & QStyle:: State_Selected) {

painter->fillRect(option. rect, option. palette.highlight());

}

painter->restore();

QApplication::style()-> drawControl( QStyle:: CE_PushButton, button, painter);

}

//事件选择过滤

bool ButtonDelegate:: editorEvent( QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)

{

if (event->type() == QEvent:: MouseButtonPress) {

qDebug()<< "--------";

QMouseEvent* e =( QMouseEvent*)event;

//确定鼠标点击的位置在画的按键中

if (option.rect.adjusted(1, 1, -1, -1).contains(e->x(), e->y()) && m_btns.contains(index)) {

m_btns.value(index)->state |= QStyle::State_Sunken;

/***************/

}

}

if (event->type() == QEvent:: MouseButtonRelease) {

qDebug()<< "++++++++";

QMouseEvent* e =( QMouseEvent*)event;

// if (option.rect.adjusted(1, 1, -1, -1).contains(e->x(), e->y()) && m_btns.contains(index)) {

// m_btns.value(index)->state &= (~QStyle::State_Sunken);

// QDialog *d = new QDialog();

// d->setGeometry(0, 0, 100, 100);

// d->move(QApplication::desktop()->screenGeometry().center() - d->rect().center());

// d->show();

// }

}

}

2、调用自己的类

//设置代理

m_buttonDelegate = new ButtonDelegate( this);

ui-> tableView->setItemDelegateForColumn( FILE_OPERATE_COLUMN , m_buttonDelegate);