popupwidget.cpp

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#include "popupwidget.h"
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QtGui>
#include <QGroupBox>

PopupWidget::PopupWidget(QWidget *parent)
    : QDialog(parent)
{
    m_widget = nullptr;

    QVBoxLayout *mainLayout = new QVBoxLayout();

    m_layout = new QHBoxLayout();
    mainLayout->addLayout(m_layout);

    QHBoxLayout *buttonLayout = new QHBoxLayout();

    m_closeButton = new QPushButton(tr("Close"));
    buttonLayout->addWidget(m_closeButton);

    mainLayout->addLayout(buttonLayout);

    setLayout(mainLayout);

    connect(m_closeButton, SIGNAL(clicked()), this, SLOT(close()));
    connect(this, SIGNAL(accepted()), this, SLOT(close()));
    connect(this, SIGNAL(rejected()), this, SLOT(close()));
}

void PopupWidget::popUp(QWidget *widget)
{
    setWidget(widget);
    exec();
}

void PopupWidget::setWidget(QWidget *widget)
{
    m_widget = widget;
    m_widgetParent = widget->parentWidget();

    // save the current width,height so we can restore when closed
    m_widgetWidth = m_widget->width();
    m_widgetHeight = m_widget->height();

    // double the size of the widget for the dialog
    m_widget->resize(m_widgetWidth * 2, m_widgetHeight * 2);
    m_layout->addWidget(m_widget);
}

bool PopupWidget::close()
{
    closePopup();

    return QDialog::close();
}

void PopupWidget::done(int result)
{
    closePopup();

    QDialog::done(result);
}

void PopupWidget::closePopup()
{
    if (m_widget && m_widgetParent) {
        if (QGroupBox *w = qobject_cast<QGroupBox *>(m_widgetParent)) {
            m_widget->resize(m_widgetWidth, m_widgetHeight);
            w->layout()->addWidget(m_widget);
        }
    }
}