undo_ui/mainwindow.cpp at main · taoga/undo_ui · GitHub

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#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
#include <iostream>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    // Action "Undo"
    QString qsUndo = "Undo";
    QString qsUndoMsg = "Undo; Ctrl+Z";

    m_pqaUndo = 0;
    m_pqaUndo = new QAction( qsUndo, 0 );
    if( m_pqaUndo )
    {
        m_pqaUndo->setText( qsUndo );
        m_pqaUndo->setShortcut( QKeySequence("Ctrl+U"));
        m_pqaUndo->setToolTip( qsUndo );
        m_pqaUndo->setStatusTip( qsUndoMsg );
        m_pqaUndo->setWhatsThis( qsUndoMsg );
        m_pqaUndo->setIcon( QIcon("://images/undo.png") );
        m_pqaUndo->setEnabled( true );
        connect( m_pqaUndo, SIGNAL(triggered()), this, SLOT( onUndo() ) );
        ui->toolBar->addAction( m_pqaUndo );
    }

    m_pqtbUndo = 0;
    m_pqtbUndo = new QToolButton( this );
    if( m_pqtbUndo )
    {
        m_pqtbUndo->setArrowType( Qt::DownArrow );
        m_pqtbUndo->setMaximumWidth( 16 );
        ui->toolBar->addWidget( m_pqtbUndo );
        connect( m_pqtbUndo, SIGNAL( pressed() ), this, SLOT( onUndoMenu() ) );
    }

    m_pWgtUndoList = 0;

    m_pFixedAdvert = 0;
    m_pFixedAdvert = new CFixedAdvert();
    if( m_pFixedAdvert )
    {
        m_pFixedAdvert->setWindowFlags( Qt::Drawer | Qt::Popup  );
        connect( m_pFixedAdvert, SIGNAL( sigOpCancel(int) ), this, SLOT( onOpCancel(int) ) );
    }
}

MainWindow::~MainWindow()
{
    if( m_pFixedAdvert ) delete m_pFixedAdvert;
    if( m_pqaUndo ) delete m_pqaUndo;
    if( m_pWgtUndoList ) delete m_pWgtUndoList;
    delete ui;
}

void MainWindow::onOpCancel( int nOpCode )
{
    qDebug() << "MainWindow::onOpCancel code:" << nOpCode;
}

void MainWindow::onUndo()
{
    std::cout << "MainWindow::onUndo()" << std::endl;

    if( m_pFixedAdvert )
    {
        if( m_pFixedAdvert->isVisible() )
            m_pFixedAdvert->hide();
        else
        {
            QString qsTemp;

            qsTemp = QString::asprintf("Operation in progress: %d", m_nOpCode);
            m_nOpCode++;
            m_pFixedAdvert->ShowAdvert( m_nOpCode, qsTemp );
        }
    }
}

void MainWindow::onUndoMenu()
{
    if( !m_pqtbUndo ) return;

    QRect tmpFrameRect = m_pqtbUndo->frameGeometry();
    QPoint qpGlbTopLeft = mapToGlobal( tmpFrameRect.topLeft() );
    QPoint qpGlbBotRight = mapToGlobal( tmpFrameRect.bottomRight() );

    if( !m_pWgtUndoList )
    {
        m_pWgtUndoList = new QUndoList;

        if( m_pWgtUndoList )
        {
            connect( m_pWgtUndoList, SIGNAL( sigFocusOut( int ) ), this, SLOT( onUndoWgtFocusOut( int ) ) );
            m_pWgtUndoList->setWindowFlags( Qt::Window | Qt::FramelessWindowHint );
            m_pWgtUndoList->move( qpGlbTopLeft.x(),  qpGlbBotRight.y() );
            m_pWgtUndoList->show();

            m_pWgtUndoList->addItem("Central frequency: 1213214214");
            m_pWgtUndoList->addItem("Filter: LowPass Intel");
            m_pWgtUndoList->addItem("Demodulator: GFSK2");

            m_pWgtUndoList->setSelectionMode( QAbstractItemView::ContiguousSelection );

            m_pWgtUndoList->setFocus(Qt::ActiveWindowFocusReason);
        }
    }
}

void MainWindow::onUndoWgtFocusOut( int nCurRow )
{
    if( !m_pWgtUndoList ) return;

    disconnect( m_pWgtUndoList, SIGNAL( sigFocusOut() ), this, SLOT( onUndoWgtFocusOut() ) );

    if(  nCurRow != -1 && nCurRow >= 0 && nCurRow < m_pWgtUndoList->count() )
    { // Undo the selected actions
        int nRow = 0;
        for( nRow = 0; nRow <= nCurRow; nRow++ )
        {
            QListWidgetItem *pItem = m_pWgtUndoList->item( nRow );
            if( pItem )
            {
                std::cout << "Undo: " << pItem->text().toStdString() << std::endl;
            }
        }
    }

    if( m_pWgtUndoList ) delete m_pWgtUndoList;
    m_pWgtUndoList = 0;
}