DiagramDesigner/source/projectTableDelegate.cpp

#include <QLineEdit>
#include <QComboBox>
#include <QEvent>

#include "projectTableDelegate.h"
#include "selectorDialog.h"
#include "global.h"

ProjectTableDelegate::ProjectTableDelegate(QObject *parent)
    : QStyledItemDelegate(parent)
{

};

ProjectTableDelegate::~ProjectTableDelegate()
{

}

QWidget* ProjectTableDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option,
                                             const QModelIndex& index) const
{
    if(index.column() == TD_ProjectModel)         //editline
    {
        QLineEdit *editor = new QLineEdit(parent);

        // 连接编辑完成信号
        connect(editor, &QLineEdit::editingFinished, this, [this, editor, index]() {
            emit editingFinished(index, editor->text());
        });

        return editor;
    }
    return nullptr;
}

/*bool ProjectTableDelegate::eventFilter(QObject* obj, QEvent* event)
{
    if (event->type() == QEvent::KeyPress) {
        QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
        if (keyEvent->key() == Qt::Key_Return || keyEvent->key() == Qt::Key_Enter) {
            QLineEdit* editor = qobject_cast<QLineEdit*>(obj);
            if (editor) {
                emit yourCustomSignal(editor->text());
                commitData(editor);  // 显式提交数据
                closeEditor(editor); // 关闭编辑器
                return true; // 阻止事件继续传播
            }
        }
    }
    return QStyledItemDelegate::eventFilter(obj, event);
}*/

/*void ProjectTableDelegate::setEditorData(QWidget* editor, const QModelIndex& index) const
{
    if(index.column() == TD_MetaModel)
    {
        QComboBox* comboBox = static_cast<QComboBox*>(editor);
        comboBox->setCurrentText(index.data(Qt::EditRole).toString());
    }
}

void ProjectTableDelegate::setModelData(QWidget* editor, QAbstractItemModel* model,
                  const QModelIndex& index) const
{
    if(index.column() == TD_MetaModel)
    {
        QComboBox* comboBox = static_cast<QComboBox*>(editor);
        model->setData(index, comboBox->currentText(), Qt::EditRole);

        emit editingFinished(index, comboBox->currentText());       //发送自定义信号
    }

}*/

bool ProjectTableDelegate::editorEvent(QEvent* event, QAbstractItemModel* model,
                 const QStyleOptionViewItem& option, const QModelIndex& index)
{
    if (event->type() == QEvent::MouseButtonDblClick) {
        if(index.column() == TD_ProjectModel)
        {

        }
        else if(index.column() == TD_MetaModel)
        {
            SelectorDialog dialog(option.widget->parentWidget()->parentWidget()->parentWidget()->parentWidget());
            dialog.initial(ST_MetaModel);
            if(dialog.exec() == QDialog::Accepted) {
                modelType meta = dialog.selectedMeta();
                if(!meta.modelType.isEmpty()) {
                    model->setData(index, meta.modelName, Qt::EditRole);
                    model->setData(index, meta.modelType, Qt::EditRole+1);
                    emit editingFinished(index,meta.modelType);
                }
            }
            return true;
        }
        else if(index.column() == TD_ComponentType)
        {
            SelectorDialog dialog(option.widget->parentWidget()->parentWidget()->parentWidget()->parentWidget());
            dialog.initial(ST_ComponentType);
            if(dialog.exec() == QDialog::Accepted) {
                QString component = dialog.selectedComponent();
                if(!component.isEmpty()) {
                    model->setData(index, component, Qt::EditRole);
                    emit editingFinished(index,component);
                }
            }
            return true;
        }
    }
    return QStyledItemDelegate::editorEvent(event, model, option, index);
}

void ProjectTableDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
    //根据行号设置交替色
    QStyleOptionViewItem opt = option;
    initStyleOption(&opt, index);

    QModelIndex firstColIndex = index.sibling(index.row(), 0);
    TableItemState state = TableItemState(firstColIndex.data(Qt::UserRole).toInt());

    /*if(index.column() == 0 && state == TS_create)
    {
        opt.palette.setColor(QPalette::Text, Qt::red);
    }
    else if(index.column() == 0 && state == TS_select)
    {
        opt.palette.setColor(QPalette::Text, Qt::green);
    }
    else if(index.column() == 0 && state == TS_edit)
    {
        opt.palette.setColor(QPalette::Text, Qt::yellow);
    }
    QStyledItemDelegate::paint(painter, opt, index);*/


    if(state == TS_create)
    {
        opt.palette.setColor(QPalette::Text, Qt::red);
    }
    else if(state == TS_select)
    {
        opt.palette.setColor(QPalette::Text, Qt::green);
    }
    else if(state == TS_edit)
    {
        opt.palette.setColor(QPalette::Text, Qt::yellow);
    }

    //先执行默认绘制（包括背景、文本等基础元素）
    QStyledItemDelegate::paint(painter, opt, index);

}