code_app/app/scanner2/dialog_imageinfo.cpp

#include "dialog_imageinfo.h"
#include "ui_dialog_imageinfo.h"

Dialog_ImageInfo::Dialog_ImageInfo(const QStringList& file_keys, const QStringList& file_values,
                                   const QStringList& image_keys, const QStringList& image_values, QWidget *parent) :
    QDialog(parent)
    , ui(new Ui::Dialog_ImageInfo)
    , m_file_keys(file_keys)
    , m_file_values(file_values)
    , m_image_keys(image_keys)
    , m_image_values(image_values)
{
    ui->setupUi(this);

    this->resize(600,400);
    setWindowFlags(Qt::Dialog | Qt::WindowCloseButtonHint);

    ui->treeWidget->header()->resizeSections(QHeaderView::ResizeToContents);
    ui->treeWidget->setColumnCount(2);
    ui->treeWidget->setColumnWidth(0,180);
    ui->treeWidget->setAlternatingRowColors(true);

    ui->buttonBox->button(QDialogButtonBox::Ok)->setText(tr("ok"));

    //set primery directory
    QStringList list;
    list<<tr("File");
    QTreeWidgetItem *class1 = new QTreeWidgetItem(ui->treeWidget,list);
    ui->treeWidget->addTopLevelItem(class1);
    list.clear();
    list<<tr("Image");
    QTreeWidgetItem *class2 = new QTreeWidgetItem(ui->treeWidget,list);
    ui->treeWidget->addTopLevelItem(class2);

    QList<QTreeWidgetItem*> list_class;

    //set class1 secondary directory
    m_file_values = makeList(m_file_keys, m_file_values);
    for(int i=0;i< m_file_keys.size();i++)
    {
        QStringList list_string;
        list_string<< m_file_keys[i]<< m_file_values[i];
        QTreeWidgetItem *class1_child = new QTreeWidgetItem(class1, list_string);
        list_class.append(class1_child);
    }
    class1->addChildren(list_class);

    //set class2 secondary directory
    list_class.clear();
    m_image_values = makeList(m_image_keys, m_image_values);
    for(int i=0;i< m_image_keys.size();i++)
    {
        QStringList list_string;
        list_string<< m_image_keys[i]<< m_image_values[i];
        QTreeWidgetItem *class2_child = new QTreeWidgetItem(class2, list_string);
        list_class.append(class2_child);
    }
    class2->addChildren(list_class);

    ui->treeWidget->expandAll();
}

Dialog_ImageInfo::~Dialog_ImageInfo()
{
    delete ui;
}

QStringList Dialog_ImageInfo::makeList(const QStringList& keys, QStringList values)
{
    if (keys.size() < values.size())
        return values.mid(0, keys.size());
    else if (keys.size() > values.size())
    {
        for (int i = 0; i < keys.size() - values.size(); i++)
            values.append(tr("None"));
    }
    return values;
}