main.cpp

奇趣公司比较新的qt/emd版本

    cellMenu->addAction(cell_sumAction);
    cellMenu->addSeparator();
    cellMenu->addAction(colorAction);
    cellMenu->addAction(fontAction);

    menuBar()->addSeparator();

    QMenu *aboutMenu = menuBar()->addMenu(tr("&Help"));
    aboutMenu->addAction(aboutSpreadSheet);
}

void SpreadSheet::updateStatus(QTableWidgetItem *item)
{
    if (item && item == table->currentItem()) {
        statusBar()->showMessage(item->data(Qt::StatusTipRole).toString(), 1000);
        cellLabel->setText("Cell: (" + encode_pos(table->row(item), table->column(item)) + ")");
    }
}

void SpreadSheet::updateColor(QTableWidgetItem *item)
{
    QPixmap pix(16, 16);
    QColor col;
    if (item)
        col = item->backgroundColor();
    if (!col.isValid())
        col = palette().base().color();

    QPainter pt(&pix);
    pt.fillRect(0, 0, 16, 16, col);

    QColor lighter = col.light();
    pt.setPen(lighter);
    QPoint lightFrame[] = { QPoint(0, 15), QPoint(0, 0), QPoint(15, 0) };
    pt.drawPolyline(lightFrame, 3);

    pt.setPen(col.dark());
    QPoint darkFrame[] = { QPoint(1, 15), QPoint(15, 15), QPoint(15, 1) };
    pt.drawPolyline(darkFrame, 3);

    pt.end();

    colorAction->setIcon(pix);
}

void SpreadSheet::updateLineEdit(QTableWidgetItem *item)
{
    if (item != table->currentItem())
        return;
    if (item)
        formulaInput->setText(item->data(Qt::EditRole).toString());
    else
        formulaInput->clear();
}

void SpreadSheet::returnPressed()
{
    QString text = formulaInput->text();
    int row = table->currentRow();
    int col = table->currentColumn();
    QTableWidgetItem *item = table->item(row, col);
    if (!item)
        table->setItem(row, col, new SpreadSheetItem(text));
    else
        item->setData(Qt::EditRole, text);
    table->viewport()->update();
}

void SpreadSheet::selectColor()
{
    QTableWidgetItem *item = table->currentItem();
    QColor col = item ? item->backgroundColor() : table->palette().base().color();
    col = QColorDialog::getColor(col, this);
    if (!col.isValid())
        return;

    QList<QTableWidgetItem*> selected = table->selectedItems();
    if (selected.count() == 0)
        return;

    foreach(QTableWidgetItem *i, selected)
        if (i) i->setBackgroundColor(col);

    updateColor(table->currentItem());
}

void SpreadSheet::selectFont()
{
    QList<QTableWidgetItem*> selected = table->selectedItems();
    if (selected.count() == 0)
        return;
    bool ok = false;
    QFont fnt = QFontDialog::getFont(&ok, font(), this);
    if (!ok)
        return;
    foreach(QTableWidgetItem *i, selected)
        if (i) i->setFont(fnt);
}

bool SpreadSheet::runInputDialog(const QString &title,
                                 const QString &c1Text,
                                 const QString &c2Text,
                                 const QString &opText,
                                 const QString &outText,
                                 QString *cell1, QString *cell2, QString *outCell)
{

    QStringList rows, cols;
    for (int c = 0; c < table->columnCount(); ++c)
        cols << QChar('A' + c);
    for (int r = 0; r < table->rowCount(); ++r)
        rows << QString::number(1 + r);

    QDialog addDialog(this);
    addDialog.setWindowTitle(title);

    QGroupBox group(title, &addDialog);
    group.setMinimumSize(250, 100);

    QLabel cell1Label(c1Text, &group);
    QComboBox cell1RowInput(&group);
    int c1Row, c1Col;
    decode_pos(*cell1, &c1Row, &c1Col);
    cell1RowInput.addItems(rows);
    cell1RowInput.setCurrentIndex(c1Row);
    QComboBox cell1ColInput(&group);
    cell1ColInput.addItems(cols);
    cell1ColInput.setCurrentIndex(c1Col);

    QLabel operatorLabel(opText, &group);
    operatorLabel.setAlignment(Qt::AlignHCenter);

    QLabel cell2Label(c2Text, &group);
    QComboBox cell2RowInput(&group);
    int c2Row, c2Col;
    decode_pos(*cell2, &c2Row, &c2Col);
    cell2RowInput.addItems(rows);
    cell2RowInput.setCurrentIndex(c2Row);
    QComboBox cell2ColInput(&group);
    cell2ColInput.addItems(cols);
    cell2ColInput.setCurrentIndex(c2Col);

    QLabel equalsLabel("=", &group);
    equalsLabel.setAlignment(Qt::AlignHCenter);

    QLabel outLabel(outText, &group);
    QComboBox outRowInput(&group);
    int outRow, outCol;
    decode_pos(*outCell, &outRow, &outCol);
    outRowInput.addItems(rows);
    outRowInput.setCurrentIndex(outRow);
    QComboBox outColInput(&group);
    outColInput.addItems(cols);
    outColInput.setCurrentIndex(outCol);

    QPushButton cancelButton(tr("Cancel"), &addDialog);
    connect(&cancelButton, SIGNAL(clicked()), &addDialog, SLOT(reject()));

    QPushButton okButton(tr("OK"), &addDialog);
    okButton.setDefault(true);
    connect(&okButton, SIGNAL(clicked()), &addDialog, SLOT(accept()));

    QHBoxLayout *buttonsLayout = new QHBoxLayout;
    buttonsLayout->addStretch(1);
    buttonsLayout->addWidget(&okButton);
    buttonsLayout->addSpacing(10);
    buttonsLayout->addWidget(&cancelButton);

    QVBoxLayout *dialogLayout = new QVBoxLayout(&addDialog);
    dialogLayout->addWidget(&group);
    dialogLayout->addStretch(1);
    dialogLayout->addItem(buttonsLayout);

    QHBoxLayout *cell1Layout = new QHBoxLayout;
    cell1Layout->addWidget(&cell1Label);
    cell1Layout->addSpacing(10);
    cell1Layout->addWidget(&cell1ColInput);
    cell1Layout->addSpacing(10);
    cell1Layout->addWidget(&cell1RowInput);

    QHBoxLayout *cell2Layout = new QHBoxLayout;
    cell2Layout->addWidget(&cell2Label);
    cell2Layout->addSpacing(10);
    cell2Layout->addWidget(&cell2ColInput);
    cell2Layout->addSpacing(10);
    cell2Layout->addWidget(&cell2RowInput);

    QHBoxLayout *outLayout = new QHBoxLayout;
    outLayout->addWidget(&outLabel);
    outLayout->addSpacing(10);
    outLayout->addWidget(&outColInput);
    outLayout->addSpacing(10);
    outLayout->addWidget(&outRowInput);

    QVBoxLayout *vLayout = new QVBoxLayout(&group);
    vLayout->addItem(cell1Layout);
    vLayout->addWidget(&operatorLabel);
    vLayout->addItem(cell2Layout);
    vLayout->addWidget(&equalsLabel);
    vLayout->addStretch(1);
    vLayout->addItem(outLayout);

    if (addDialog.exec()) {
        *cell1 = cell1ColInput.currentText() + cell1RowInput.currentText();
        *cell2 = cell2ColInput.currentText() + cell2RowInput.currentText();
        *outCell = outColInput.currentText() + outRowInput.currentText();
        return true;
    }

    return false;
}


void SpreadSheet::actionSum()
{

    int row_first = 0;
    int row_last = 0;
    int row_cur = 0;

    int col_first = 0;
    int col_last = 0;
    int col_cur = 0;

    QList<QTableWidgetItem*> selected = table->selectedItems();
    if (!selected.isEmpty()) {
        QTableWidgetItem *first = selected.first();
        QTableWidgetItem *last = selected.last();
        row_first = table->row(first);
        row_last = table->row(last);
        col_first = table->column(first);
        col_last = table->column(last);
    }

    QTableWidgetItem *current = table->currentItem();
    if (current) {
        row_cur = table->row(current);
        col_cur = table->column(current);
    }

    QString cell1 = encode_pos(row_first, col_first);
    QString cell2 = encode_pos(row_last, col_last);
    QString out = encode_pos(row_cur, col_cur);


    if (runInputDialog(tr("Sum cells"), tr("First cell:"), tr("Last cell:"),
                       QString("%1").arg(QChar(0x03a3)), tr("Output to:"),
                       &cell1, &cell2, &out)) {
        int row, col;
        decode_pos(out, &row, &col);
        table->item(row, col)->setText("sum " + cell1 + " " + cell2);
    }
}


void SpreadSheet::actionMath_helper(const QString &title, const QString &op)
{
    QString cell1 = "C1";
    QString cell2 = "C2";
    QString out = "C3";

    QTableWidgetItem *current = table->currentItem();
    if (current)
        out = encode_pos(table->currentRow(), table->currentColumn());

    if (runInputDialog(title, tr("Cell 1"), tr("Cell 2"), op, tr("Output to:"),
                       &cell1, &cell2, &out)) {
        int row, col;
        decode_pos(out, &row, &col);
        table->item(row, col)->setText(op + " " + cell1 + " " + cell2);
    }
}


void SpreadSheet::actionAdd()
{
    actionMath_helper(tr("Addition"), "+");
}

void SpreadSheet::actionSubtract()
{
    actionMath_helper(tr("Subtraction"), "-");
}

void SpreadSheet::actionMultiply()
{
    actionMath_helper(tr("Multiplication"), "*");
}

void SpreadSheet::actionDivide()
{
    actionMath_helper(tr("Division"), "/");
}

void SpreadSheet::clear()
{
    foreach (QTableWidgetItem *i, table->selectedItems())
        i->setText("");
}

void SpreadSheet::setupContextMenu()
{
    addAction(cell_addAction);
    addAction(cell_subAction);
    addAction(cell_mulAction);
    addAction(cell_divAction);
    addAction(cell_sumAction);
    addAction(firstSeparator);
    addAction(colorAction);
    addAction(fontAction);
    addAction(secondSeparator);
    addAction(clearAction);
    setContextMenuPolicy(Qt::ActionsContextMenu);
}

void SpreadSheet::setupContents()
{
    QColor titleBackground(Qt::lightGray);
    QFont titleFont = table->font();
    titleFont.setBold(true);

    // column 0
    table->setItem(0, 0, new SpreadSheetItem("Item"));
    table->item(0, 0)->setBackgroundColor(titleBackground);
    table->item(0, 0)->setToolTip("This column shows the purchased item/service");
    table->item(0, 0)->setFont(titleFont);
    table->setItem(1, 0, new SpreadSheetItem("AirportBus"));
    table->setItem(2, 0, new SpreadSheetItem("Flight (Munich)"));
    table->setItem(3, 0, new SpreadSheetItem("Lunch"));
    table->setItem(4, 0, new SpreadSheetItem("Flight (LA)"));
    table->setItem(5, 0, new SpreadSheetItem("Taxi"));
    table->setItem(6, 0, new SpreadSheetItem("Dinner"));
    table->setItem(7, 0, new SpreadSheetItem("Hotel"));
    table->setItem(8, 0, new SpreadSheetItem("Flight (Oslo)"));
    table->setItem(9, 0, new SpreadSheetItem("Total:"));
    table->item(9, 0)->setFont(titleFont);
    table->item(9,0)->setBackgroundColor(Qt::lightGray);
    // column 1
    table->setItem(0, 1, new SpreadSheetItem("Date"));
    table->item(0, 1)->setBackgroundColor(titleBackground);
    table->item(0, 1)->setToolTip("This column shows the purchase date, double click to change");
    table->item(0, 1)->setFont(titleFont);
    table->setItem(1, 1, new SpreadSheetItem("15/6/2006"));
    table->setItem(2, 1, new SpreadSheetItem("15/6/2006"));
    table->setItem(3, 1, new SpreadSheetItem("15/6/2006"));
    table->setItem(4, 1, new SpreadSheetItem("21/5/2006"));
    table->setItem(5, 1, new SpreadSheetItem("16/6/2006"));
    table->setItem(6, 1, new SpreadSheetItem("16/6/2006"));
    table->setItem(7, 1, new SpreadSheetItem("16/6/2006"));
    table->setItem(8, 1, new SpreadSheetItem("18/6/2006"));
    table->setItem(9, 1, new SpreadSheetItem());
    table->item(9,1)->setBackgroundColor(Qt::lightGray);
    // column 2
    table->setItem(0, 2, new SpreadSheetItem("Price"));
    table->item(0, 2)->setBackgroundColor(titleBackground);
    table->item(0, 2)->setToolTip("This column shows the price of the purchase");
    table->item(0, 2)->setFont(titleFont);
    table->setItem(1, 2, new SpreadSheetItem("150"));
    table->setItem(2, 2, new SpreadSheetItem("2350"));
    table->setItem(3, 2, new SpreadSheetItem("-14"));
    table->setItem(4, 2, new SpreadSheetItem("980"));
    table->setItem(5, 2, new SpreadSheetItem("5"));
    table->setItem(6, 2, new SpreadSheetItem("120"));
    table->setItem(7, 2, new SpreadSheetItem("300"));
    table->setItem(8, 2, new SpreadSheetItem("1240"));
    table->setItem(9, 2, new SpreadSheetItem());
    table->item(9,2)->setBackgroundColor(Qt::lightGray);
    // column 3
    table->setItem(0, 3, new SpreadSheetItem("Currency"));
    table->item(0, 3)->setBackgroundColor(titleBackground);
    table->item(0, 3)->setToolTip("This column shows the currency");
    table->item(0, 3)->setFont(titleFont);
    table->setItem(1, 3, new SpreadSheetItem("NOK"));
    table->setItem(2, 3, new SpreadSheetItem("NOK"));
    table->setItem(3, 3, new SpreadSheetItem("EUR"));
    table->setItem(4, 3, new SpreadSheetItem("EUR"));
    table->setItem(5, 3, new SpreadSheetItem("USD"));
    table->setItem(6, 3, new SpreadSheetItem("USD"));
    table->setItem(7, 3, new SpreadSheetItem("USD"));
    table->setItem(8, 3, new SpreadSheetItem("USD"));
    table->setItem(9, 3, new SpreadSheetItem());
    table->item(9,3)->setBackgroundColor(Qt::lightGray);
    // column 4
    table->setItem(0, 4, new SpreadSheetItem("Ex.Rate"));
    table->item(0, 4)->setBackgroundColor(titleBackground);
    table->item(0, 4)->setToolTip("This column shows the exchange rate to NOK");
    table->item(0, 4)->setFont(titleFont);
    table->setItem(1, 4, new SpreadSheetItem("1"));
    table->setItem(2, 4, new SpreadSheetItem("1"));
    table->setItem(3, 4, new SpreadSheetItem("8"));
    table->setItem(4, 4, new SpreadSheetItem("8"));
    table->setItem(5, 4, new SpreadSheetItem("7"));
    table->setItem(6, 4, new SpreadSheetItem("7"));
    table->setItem(7, 4, new SpreadSheetItem("7"));
    table->setItem(8, 4, new SpreadSheetItem("7"));
    table->setItem(9, 4, new SpreadSheetItem());
    table->item(9,4)->setBackgroundColor(Qt::lightGray);
    // column 5
    table->setItem(0, 5, new SpreadSheetItem("NOK"));
    table->item(0, 5)->setBackgroundColor(titleBackground);
    table->item(0, 5)->setToolTip("This column shows the expenses in NOK");
    table->item(0, 5)->setFont(titleFont);
    table->setItem(1, 5, new SpreadSheetItem("* C2 E2"));
    table->setItem(2, 5, new SpreadSheetItem("* C3 E3"));
    table->setItem(3, 5, new SpreadSheetItem("* C4 E4"));
    table->setItem(4, 5, new SpreadSheetItem("* C5 E5"));
    table->setItem(5, 5, new SpreadSheetItem("* C6 E6"));
    table->setItem(6, 5, new SpreadSheetItem("* C7 E7"));
    table->setItem(7, 5, new SpreadSheetItem("* C8 E8"));
    table->setItem(8, 5, new SpreadSheetItem("* C9 E9"));
    table->setItem(9, 5, new SpreadSheetItem("sum F2 F9"));
    table->item(9,5)->setBackgroundColor(Qt::lightGray);

}

const char *htmlText =
"<HTML>"
"<p><b>This demo shows use of <c>QTableWidget</c> with custom handling for"
" individual cells.</b></p>"
"<p>Using a customized table item we make it possible to have dynamic"
" output in different cells. The content that is implemented for this"
" particular demo is:"
"<ul>"
"<li>Adding two cells.</li>"
"<li>Subtracting one cell from another.</li>"
"<li>Multiplying two cells.</li>"
"<li>Dividing one cell with another.</li>"
"<li>Summing the contents of an arbitrary number of cells.</li>"
"</HTML>";


void SpreadSheet::showAbout()
{
    QMessageBox::about(this, "About Spreadsheet", htmlText);
}

int main(int argc, char** argv) {
    Q_INIT_RESOURCE(spreadsheet);
    QApplication app(argc, argv);
    SpreadSheet sheet(10, 6);
    sheet.setWindowIcon(QPixmap(":/images/interview.png"));
    sheet.resize(640, 420);
    sheet.show();
    return app.exec();
}

#include "main.moc"