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继承QAbstractTableModel QStyledItemDelegate实现自定义表格，添加进度条和选中框。

摘要：
由于项目要求，需要实现一个列表目录来显示信息，并为每个项目提供进度条和选项框功能，因此需要继承QAbstractTableModel和QStyledItemDelegate进行自定义-自定义数据项数据。h#ifndefITEMDATA_h#defineITEMDATA_h#包含#include#include类型

由于项目要求，需要实现一个列表目录显示信息，并且需要实现每一项提供进度条和选项框功能，所以需要继承QAbstractTableModel和QStyledItemDelegate进行自定义。

-自定义数据

itemdata.h

#ifndef ITEMDATA_H
#define ITEMDATA_H
#include <QMetaType>
#include <QString>
#include <QDebug>

typedef enum{
    level_0 = 0,
    level_1,
    level_2,
    level_3,
    level_4,
    level_5,
    level_6,
    level_7,
    level_8,
    level_9,
    level_none,
} Priority;

typedef enum{
    state_0 = 0,
    state_1,
    state_2,
    state_3,
    state_4,
    state_5,
    state_6,
    state_7,
    state_8,
    state_9,
}State;

struct Data{
    Priority priority;
    State taskState;
    QString taskCode;
    QString taskName;
    QString taskType;
    QString tubeType;
    int tubeNumber;
    int rackNumber;
    int beginTime;
    int processed; //[0-100]
    QString taskOwner;
    bool select = false;
};

Q_DECLARE_METATYPE(Data)

#endif // ITEMDATA_H

-继承QAbstractTableModel自定义数据

mytablemodel.h

#ifndef MYTABLEMODEL_H
#define MYTABLEMODEL_H
#include<QAbstractTableModel>
#include <QList>

#include "itemdata.h"

class myTableModel:public QAbstractTableModel
{
    Q_OBJECT
public:
    myTableModel(QAbstractTableModel *parent = 0);
    ~myTableModel();
    QVariant data(const QModelIndex &index, int role) const;// 重写，用于返回数据
    int rowCount(const QModelIndex &parent = QModelIndex()) const; // 重写， 反回行数
    int columnCount(const QModelIndex &parent = QModelIndex()) const;// 重写，返回列数
    QVariant headerData(int section, Qt::Orientation, int role)const;// 重写， 返回列标题
    Qt::ItemFlags flags(const QModelIndex &index) const; // 重写， 每一项的操作标识
     bool setData(const QModelIndex &index, const QVariant  &value, int role = Qt::EditRole);// 重写， 设置数据

    void addData(Data data);// 添加模型数据

private：
    QStringList _roleNames;
    QList<Data> _dataList;
};

#endif // MYTABLEMODEL_H
#include "mytablemodel.h"

myTableModel::myTableModel(QAbstractTableModel *parent):QAbstractTableModel(parent),
    _roleNames({"priority","taskState","taskCode","taskName","taskType","tubeType","tubeNumber","rackNumber","beginTime","processed","taskOwner","select"}){

}

myTableModel::~myTableModel(){

}

QVariant myTableModel::data(const QModelIndex &index, int role) const{
    QVariant v;
    switch (role - (Qt::UserRole+1)) {// 自定义角色从Qt::UserRole + 1开始
      case 0:
        v = QVariant(_dataList[index.row()].priority);
        break;
     case 1:
        v = QVariant(_dataList[index.row()].taskState);
        break;
    case 2:
        v = QVariant(_dataList[index.row()].taskCode);
        break;
    case 3:
        v = QVariant(_dataList[index.row()].taskName);
        break;
    case 4:
        v = QVariant(_dataList[index.row()].taskType);
        break;
    case 5:
        v = QVariant(_dataList[index.row()].tubeType);
        break;
    case 6:
        v = QVariant(_dataList[index.row()].tubeNumber);
        break;
    case 7:
        v = QVariant(_dataList[index.row()].rackNumber);
        break;
    case 8:
        v = QVariant(_dataList[index.row()].beginTime);
        break;
    case 9:
        v = QVariant(_dataList[index.row()].processed);
        break;
    case 10:
         v = QVariant(_dataList[index.row()].taskOwner);
        break;
    case 11:
        v= QVariant(_dataList[index.row()].select);
        break;
    }
    return v;
}

int myTableModel::rowCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)
    return _dataList.size();// 行数
}

int myTableModel::columnCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent)
    return _roleNames.size();//列数
}

//QHash<int, QByteArray> myTableModel::roleNames() const
//{
//    QHash<int,QByteArray> roleName;
//    for(int i = 0; i < _roleNames.size(); ++i){
//        roleName.insert(Qt::UserRole+1+i,_roleNames[i].toLocal8Bit());
//    }
//    return roleName;
//}

QVariant myTableModel::headerData(int section, Qt::Orientation orientation, int role)const{
    if(role ==  Qt::DisplayRole && orientation == Qt::Orientation::Horizontal){ //返回列标题
        QString sectionName;
        switch (section) {
        case 0:
        sectionName = tr("优先级");
        break;
        case 1:
        sectionName = tr("状态");
        break;
        case 2:
        sectionName = tr("编码");
        break;
        case 3:
        sectionName = tr("名称");
        break;
        case 4:
        sectionName = tr("类型");
        break;
        case 5:
        sectionName = tr("冻存管型号");
        break;
        case 6:
        sectionName = tr("管数量");
        break;
        case 7:
        sectionName = tr("盒数量");
        break;
        case 8:
        sectionName = tr("开始时间");
        break;
        case 9:
        sectionName = tr("进度");
        break;
        case 10:
        sectionName = tr("发起人");
        break;
        case 11:
        sectionName = tr("选中");
        break;


        }
        return sectionName;
    }
    return QVariant();
}

void myTableModel::addData(Data data){
   beginInsertRows(QModelIndex(),_dataList.count(),_dataList.count()); //添加数据之前进行通知并告知添加到什么位置
    _dataList.push_back(data);
    endInsertRows();
}

Qt::ItemFlags myTableModel::flags(const QModelIndex &index) const {
    if(!index.isValid()){
        return Qt::NoItemFlags;
    }
    Qt::ItemFlags flags;
    flags = QAbstractItemModel::flags(index);
    if(index.column() == 11){
        flags |= Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable|Qt::ItemIsUserCheckable;// 选项框设置为可选中
    } else {

        flags |= Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable;
    }
    return flags;
}
bool myTableModel::setData(const QModelIndex &index, const QVariant &value, int role) {
    if(role == Qt::UserRole + 1 + 11){// 设置选项框数据true or false
        QVector<int> changeRoles;
        changeRoles.push_back(Qt::UserRole + 1 + 11);
        for(QList<Data>::iterator it = _dataList.begin(); it != _dataList.end(); ++it){
            if((*it).taskCode == index.data(Qt::UserRole +1 + 2).toString()){ // 根据taskCode定位选中的数据行
                (*it).select = value.toBool();
            }
        }
        emit dataChanged(index,index,changeRoles);
        return true;
    } else{
        return QAbstractTableModel::setData(index, index,role); // 调用默认父类默认实现
    }
}

-继承QStyledItemDelegate重写数据项代理，显示各个项，并接收接收处理用户事件

myitemdelegate.h

#ifndef MYITEMDELEGATE_H
#define MYITEMDELEGATE_H
#include <QStyledItemDelegate>
#include <QPainter>
#include <QStyleOptionViewItem>
#include <QRect>
#include <QPainterPath>
#include <QDate>
#include <QTime>
#include <QApplication>

#include "itemdata.h"

class myItemDelegate:public QStyledItemDelegate
{
    Q_OBJECT
public:
    myItemDelegate(QStyledItemDelegate * parent = 0);
    ~myItemDelegate();

    void paint(QPainter * painter,const QStyleOptionViewItem & option,const QModelIndex & index) const; // 重写，绘制每一项
    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const;//重写， 返回项尺寸
    bool editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index);// 重写，处理项事件
    QRect checkBoxRect(const QStyleOptionViewItem &viewItemStyleOptions) const;//返回选中框尺寸

};

#endif // MYITEMDELEGATE_H
#include "myitemdelegate.h"
#include <QMouseEvent>

myItemDelegate::myItemDelegate(QStyledItemDelegate *parent):QStyledItemDelegate(parent)
{

}

myItemDelegate::~myItemDelegate(){

}

void myItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const{
    if(index.isValid()){
        painter->save();
        int column = index.column();
        QVariant v = index.data(column + (Qt::UserRole+1)); //获取数据
//        painter->drawRect(option.rect);

        QStyleOptionViewItem viewOption(option);
       if(0 == column){
            Priority priority = (Priority)v.toInt();
            painter->drawText(option.rect, Qt::AlignCenter, QString::number(priority));
       }else if(1 == column){
            State state = (State)v.toInt();
            painter->drawText(option.rect, Qt::AlignCenter, QString::number(state));
       }
       else if(2 == column){
            QString taskCode = v.toString();
            painter->drawText(option.rect, Qt::AlignCenter,taskCode);
              }
       else if(3 == column){
            QString taskName = v.toString();
            painter->drawText(option.rect, Qt::AlignCenter,taskName);
              }
       else if(4== column){
            QString taskType = v.toString();
            painter->drawText(option.rect, Qt::AlignCenter,taskType);
              }
       else if(5 == column){
            QString tubeType = v.toString();
              painter->drawText(option.rect, Qt::AlignCenter,tubeType);
              }
       else if(6 == column){
            int tubeNumber = v.toInt();
              painter->drawText(option.rect, Qt::AlignCenter, QString::number(tubeNumber));
              }
       else if(7 == column){
            int rackNumber = v.toUInt();
              painter->drawText(option.rect, Qt::AlignCenter, QString::number(rackNumber));
              }
       else if(8== column){
            int  beginTime = v.toInt();
            QRect timeRect = QRect(option.rect.left(),option.rect.top(),option.rect.width(),option.rect.height()/2);
            QRect dateRect = QRect(option.rect.left(),option.rect.top()+(option.rect.height()/2),option.rect.width(),option.rect.height()/2);
            painter->drawText(timeRect,Qt::AlignCenter,QDateTime::fromSecsSinceEpoch(beginTime).toString("hh:mm:ss"));
            painter->drawText(dateRect,Qt::AlignCenter,QDateTime::fromSecsSinceEpoch(beginTime).toString("yyyy-MM-dd"));
              }
       else if(9 == column){// 绘制进度条
            int processed = v.toInt();

            QStyleOptionProgressBar *processBar = new QStyleOptionProgressBar();
           processBar->rect = QRect(option.rect.left(),option.rect.top()+(option.rect.height()/3),option.rect.width(),option.rect.height()/3);
           processBar->minimum = 0;
           processBar->maximum = 100;
           processBar->progress = processed;
           processBar->text = QString::number(processed)+"%";
           processBar->textAlignment = Qt::AlignBottom;
           processBar->textVisible = true;
            QApplication::style()->drawControl(QStyle::CE_ProgressBar, processBar, painter);
//              painter->drawText(option.rect, Qt::AlignCenter, QString::number(processed));
              }
       else if(10 == column){
              QString taskOwner = v.toString();
                painter->drawText(option.rect, Qt::AlignCenter,taskOwner);
              }
       else if(11 == column){ // 绘制选项框
          bool checked = v.toBool();
          QStyleOptionButton checkButton;
          checkButton.state |= QStyle::State_Enabled;
          checkButton.state |= checked ? QStyle::State_On : QStyle::State_Off;// 根据模型值设定是否选中
          checkButton.rect = checkBoxRect(option);
          QApplication::style()->drawControl(QStyle::CE_CheckBox, &checkButton, painter);
       }
       painter->restore();

    }
}

QSize myItemDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const{
    qDebug()<< option.rect.width()<< option.rect.height();
    //return QSize(option.rect.size());
    //return QSize(40,60);
    return QSize(option.rect.width(), 200);
}
QRect myItemDelegate::checkBoxRect(const QStyleOptionViewItem &viewItemStyleOptions) const {
    QStyleOptionButton checkBoxStyleOption;
    QRect checkBoxRect = QApplication::style()->subElementRect(QStyle::SE_CheckBoxIndicator, &checkBoxStyleOption);
    QPoint checkBoxPoint(viewItemStyleOptions.rect.x() + (viewItemStyleOptions.rect.width()- checkBoxRect.width())/2,
                         viewItemStyleOptions.rect.y() + (viewItemStyleOptions.rect.height()- checkBoxRect.height())/2);
    return QRect(checkBoxPoint, checkBoxRect.size());
}
bool myItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index) {
    if(index.column() == 11){
        if(event->type() == QEvent::MouseButtonRelease){
            QMouseEvent *mouseEvent = (QMouseEvent*)event;
            if(mouseEvent->button() == Qt::LeftButton && checkBoxRect(option).contains(mouseEvent->pos())){
                bool checked = index.data(Qt::UserRole + 1 + 11).toBool();
                return model->setData(index, !checked, Qt::UserRole + 1 + 11);// 单击选中框设置相反的选中状态
            }
        }
    }
    return QStyledItemDelegate::editorEvent(event, model, option, index); //其余事件调用默认实现
}

-测试

.../
 QSortFilterProxyModel *sortModel = new QSortFilterProxyModel();
    myTableModel *model = new myTableModel();
    myItemDelegate *itemDelegate = new myItemDelegate();
    ui->tableView->setItemDelegate(itemDelegate);
    sortModel->setSourceModel(model);
    sortModel->setDynamicSortFilter(true);
    sortModel->setSortRole(Qt::UserRole+1); //按照权限排序
    ui->tableView->setSortingEnabled(true);
    ui->tableView->setModel(sortModel);


    ui->tableView->setSelectionBehavior(QAbstractItemView::SelectRows);
    ui->tableView->setSelectionMode ( QAbstractItemView::SingleSelection);
//    ui->tableView->setEditTriggers(QAbstractItemView::NoEditTriggers);
    ui->tableView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    ui->tableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
    ui->tableView->resizeColumnsToContents();
    ui->tableView->setShowGrid(false);
    for(int i = 0 ;i < 10 ; ++i){
        Data d;
        d.priority = static_cast<Priority>(i);
        d.taskState = static_cast<State>(9-i);
        d.taskCode = QString("taskCode%1").arg(i);
        d.taskName = QString("taskName%1").arg(i);
        d.taskType = QString("taskType%1").arg(i);
        d.tubeType = QString("tubeType%1").arg(i);
        d.tubeNumber = i+100;
        d.rackNumber = i+10;
        d.beginTime = QDateTime::currentDateTime().toTime_t();
        d.processed = 50+i;
        d.taskOwner = QString("owner%1").arg(i);
        model->addData(d);
    }
/...

继承QAbstractTableModel QStyledItemDelegate实现自定义表格，添加进度条和选中框。第1张

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