logplus/logPlus/preqtablewidget.cpp

#include "preqtablewidget.h"
#include <QMouseEvent>
#include <QDebug>
#include <QApplication>
#include <QMimeData>
#include <QDrag>
#include <QWidget>

#include "CallManage.h"
#include "PropertyWidget.h"

//针对曲线
PreQTableWidget::PreQTableWidget(QWidget *parent) :
    QTableWidget(parent)
{
    setSelectionBehavior(QAbstractItemView::SelectRows);
    setAcceptDrops(true);

    connect(this, SIGNAL(itemSelectionChanged()), this, SLOT(ChangedItem()));
}

void PreQTableWidget::mousePressEvent(QMouseEvent *event)
{
    qDebug()<<"PreQTableWidget mousePressEvent";

    if (event->button() == Qt::LeftButton)
    {
        startPos = event->pos();
        m_press = true;
    }
    QTableWidget::mousePressEvent(event);
}

void PreQTableWidget::ChangedItem()
{
    qDebug()<<"PreQTableWidget itemSelectionChanged!";
}

void PreQTableWidget::mouseMoveEvent(QMouseEvent *event)
{    
    qDebug()<<"PreQTableWidget mouseMoveEvent";

    if (event->buttons() & Qt::LeftButton)
    {
        int distance = (event->pos() - startPos).manhattanLength();
        if (distance >= QApplication::startDragDistance())
        {
            performDrag();
        }
    }
    QTableWidget::mouseMoveEvent(event);
}

void PreQTableWidget::dragEnterEvent(QDragEnterEvent *event)
{
    qDebug()<<"PreQTableWidget dragEnterEvent";

    PreQTableWidget *source = qobject_cast<PreQTableWidget *>(event->source());
    if (source && source != this) {
        event->setDropAction(Qt::MoveAction);
        event->accept();
    }

    //
    QMyTreeWidget *sourceTree = qobject_cast<QMyTreeWidget *>(event->source());
    if (sourceTree) {
        event->setDropAction(Qt::MoveAction);
        event->accept();
    }
}

void PreQTableWidget::dragMoveEvent(QDragMoveEvent *event)
{    
    qDebug()<<"PreQTableWidget dragMoveEvent";

    PreQTableWidget *source = qobject_cast<PreQTableWidget *>(event->source());
    if (source && source != this) {
        event->setDropAction(Qt::MoveAction);
        event->accept();
    }

    //
    QMyTreeWidget *sourceTree = qobject_cast<QMyTreeWidget *>(event->source());
    if (sourceTree) {
        event->setDropAction(Qt::MoveAction);
        event->accept();
    }
}

void PreQTableWidget::dropEvent(QDropEvent *event)
{
    qDebug()<<"PreQTableWidget dropEvent";

    PreQTableWidget *source = qobject_cast<PreQTableWidget *>(event->source());
    if (source && source != this) {

        QString strExtern = event->mimeData()->text();

        //
        QStringList list = strExtern.split("#@@#");//QString字符串分割函数
        if (list.size() > 2)
        {
            QString strSlfName = list[0];
            QString strWellName = list[1];
            QString strLineName = list[2];

            qDebug() << "source strSlfName:" << strSlfName<< " strWellName:" << strWellName<< " strLineName:" << strLineName;

            if(m_strWellName == strWellName)
            {
                m_AddSuc = true;
                //新建曲线
                emit CallManage::getInstance()->sig_AddLine(strSlfName, strWellName, m_strTrackName, strLineName);

                //
                //m_listLineName.push_back(strLineName);

                // 接受拖拽事件
                event->setDropAction(Qt::MoveAction);
                event->accept();
            }
            else
            {
                 // 如果井名不正确，不接受拖拽事件
                 event->ignore();
            }
        }
        else
        {
            int rownum = rowCount();
            setRowCount(rownum+1);
            //
            QTableWidgetItem* item = new QTableWidgetItem(strExtern);
            item->setFlags(item->flags() & (~Qt::ItemIsEditable));
            item->setTextAlignment(Qt::AlignCenter); //设置文本居中
            //
            setItem(rownum, 0, item);

            //
            event->setDropAction(Qt::MoveAction);
            event->accept();
        }
    }

    //
    QMyTreeWidget *sourceTree = qobject_cast<QMyTreeWidget *>(event->source());
    if (sourceTree) {

        QString strExtern = event->mimeData()->text();

        //
        QStringList list = strExtern.split("#@@#");//QString字符串分割函数
        if (list.size() > 2)
        {
            QString strSlfName = list[0];
            QString strWellName = list[1];
            QString strLineName = list[2];

            qDebug() << "sourceTree strSlfName:" << strSlfName<< " strWellName:" << strWellName<< " strLineName:" << strLineName;

            if(m_strWellName == strWellName)
            {
                m_AddSuc = true;
                //新建曲线
                emit CallManage::getInstance()->sig_AddLine(strSlfName, strWellName, m_strTrackName, strLineName);

                //
                //m_listLineName.push_back(strLineName);

                // 接受拖拽事件
                event->setDropAction(Qt::MoveAction);
                event->accept();
            }
            else
            {
                 // 如果井名不正确，不接受拖拽事件
                 event->ignore();
            }
        }
    }
}

void PreQTableWidget::performDrag()
{
    qDebug()<<"PreQTableWidget performDrag!";

    int iCurrentRow = currentRow();
    if( cellWidget(iCurrentRow, 0) != nullptr )
    {
         auto myWidget = cellWidget(currentRow(), 0);

         FormInfo *formInfo = (FormInfo*)myWidget;//获得widget

         //曲线对象(AC、BS...)
         QMimeData *mimeData = new QMimeData;
         // 这里需要根据你的item数据来设置mimeData，例如：
         mimeData->setText(formInfo->m_strSlfName + "#@@#"+ formInfo->m_strWellName + "#@@#" +formInfo->m_strLineName);
         // 创建QDrag对象
         QDrag *drag = new QDrag(this);
         drag->setMimeData(mimeData);
         // 可以设置拖拽时的光标图标
         QRect itemRect = visualItemRect(currentItem()); // 获取项的矩形区域
         QPixmap itemPixmap = QWidget::grab(itemRect);//QPixmap::grabWidget(this, itemRect); // 获取项的屏幕截图
         // 调整拖拽光标的热点，使其位于截图的中心
         drag->setPixmap(itemPixmap);

         // 执行拖拽操作
         m_AddSuc = false;
         Qt::DropAction dropAction = drag->exec(Qt::MoveAction);
         if (dropAction == Qt::MoveAction) { //&& m_AddSuc
             // 处理拖拽结束的逻辑，例如从界面上移除拖拽的项
             removeRow(iCurrentRow);
             //删除曲线
             emit CallManage::getInstance()->sig_delLine(formInfo->m_strWellName, formInfo->m_strTrackName, formInfo->m_strLineName);
             //
             //m_listLineName.removeOne(formInfo->m_strLineName);
         }
    }

//    if(!currentItem())
//    {
//        return;
//    }

//    QString strExtern = currentItem()->text();

//    QMimeData *mimeData = new QMimeData;
//    mimeData->setText(strExtern);

//    QDrag *drag = new QDrag(this);
//    drag->setMimeData(mimeData);
//    if (drag->exec(Qt::MoveAction) == Qt::MoveAction){
//        qDebug()<<"Success!";
//    }
}


void PreQTableWidget::mouseReleaseEvent(QMouseEvent *event)
{
    if(m_press)//如果鼠标左键被释放
    {
        qDebug()<<"PreQTableWidget mouseReleaseEvent";

        m_press = false;//按下标志置fasle，形成互斥

        int iCurrentRow = currentRow();
        qDebug()<<"PreQTableWidget mouseReleaseEvent, iCurrentRow=" << QString::number(iCurrentRow);
        if( cellWidget(iCurrentRow, 0) != nullptr )
        {
             auto myWidget = cellWidget(currentRow(), 0);

             FormInfo *formInfo = (FormInfo*)myWidget;//获得widget
             //
             QList<float> listMin;
             QList<float> listMax;
             QStringList strListOtherLine = getListLineName(formInfo->m_strLineName, listMin, listMax);
             //PropertyService()->initCurveProperty(formInfo->m_strSlfName, formInfo->m_strWellName, formInfo->m_strTrackName, formInfo->m_strLineName, formInfo->m_lineColor, formInfo->m_dWidth, strListOtherLine);

             PropertyService()->initCurveProperty(formInfo, strListOtherLine, listMin, listMax);

             //曲线置顶显示，激活可选
             emit CallManage::getInstance()->sig_Raise(formInfo->m_strSlfName, formInfo->m_strWellName, formInfo->m_strTrackName, formInfo->m_strLineName);
        }
    }
}

QStringList PreQTableWidget::getListLineName(QString strLineName, QList<float> &listMin, QList<float> &listMax)
{
    QStringList strListOtherLine;
    for(int i=0; i<rowCount(); i++)
    {
        if( cellWidget(i, 0) != nullptr )
        {
             auto myWidget = cellWidget(i, 0);

             FormInfo *formInfo = (FormInfo*)myWidget;//获得widget
             QString strTmp = formInfo->m_strLineName;
             if(strTmp!=strLineName)
             {
                 strListOtherLine.push_back(strTmp);
                 listMin.push_back(formInfo->m_vmin);
                 listMax.push_back(formInfo->m_vmax);
             }
        }
    }
    return strListOtherLine;
}