C++ QTextTableCell::columnSpan方法代码示例

void QTextOdfWriter::writeFrame(QXmlStreamWriter &writer, const QTextFrame *frame)
{
    Q_ASSERT(frame);
    const QTextTable *table = qobject_cast<const QTextTable*> (frame);

    if (table) { // Start a table.
        writer.writeStartElement(tableNS, QString::fromLatin1("table"));
        writer.writeEmptyElement(tableNS, QString::fromLatin1("table-column"));
        writer.writeAttribute(tableNS, QString::fromLatin1("number-columns-repeated"), QString::number(table->columns()));
    } else if (frame->document() && frame->document()->rootFrame() != frame) { // start a section
        writer.writeStartElement(textNS, QString::fromLatin1("section"));
    }

    QTextFrame::iterator iterator = frame->begin();
    QTextFrame *child = 0;

    int tableRow = -1;
    while (! iterator.atEnd()) {
        if (iterator.currentFrame() && child != iterator.currentFrame())
            writeFrame(writer, iterator.currentFrame());
        else { // no frame, its a block
            QTextBlock block = iterator.currentBlock();
            if (table) {
                QTextTableCell cell = table->cellAt(block.position());
                if (tableRow < cell.row()) {
                    if (tableRow >= 0)
                        writer.writeEndElement(); // close table row
                    tableRow = cell.row();
                    writer.writeStartElement(tableNS, QString::fromLatin1("table-row"));
                }
                writer.writeStartElement(tableNS, QString::fromLatin1("table-cell"));
                if (cell.columnSpan() > 1)
                    writer.writeAttribute(tableNS, QString::fromLatin1("number-columns-spanned"), QString::number(cell.columnSpan()));
                if (cell.rowSpan() > 1)
                    writer.writeAttribute(tableNS, QString::fromLatin1("number-rows-spanned"), QString::number(cell.rowSpan()));
                if (cell.format().isTableCellFormat()) {
                    writer.writeAttribute(tableNS, QString::fromLatin1("style-name"), QString::fromLatin1("T%1").arg(cell.tableCellFormatIndex()));
                }
            }
            writeBlock(writer, block);
            if (table)
                writer.writeEndElement(); // table-cell
        }
        child = iterator.currentFrame();
        ++iterator;
    }
    if (tableRow >= 0)
        writer.writeEndElement(); // close table-row

    if (table || (frame->document() && frame->document()->rootFrame() != frame))
        writer.writeEndElement();  // close table or section element
}

void QTextCopyHelper::copy()
{
    if (cursor.hasComplexSelection()) {
        QTextTable *table = cursor.currentTable();
        int row_start, col_start, num_rows, num_cols;
        cursor.selectedTableCells(&row_start, &num_rows, &col_start, &num_cols);

        QTextTableFormat tableFormat = table->format();
        tableFormat.setColumns(num_cols);
        tableFormat.clearColumnWidthConstraints();
        const int objectIndex = dst->formatCollection()->createObjectIndex(tableFormat);

        Q_ASSERT(row_start != -1);
        for (int r = row_start; r < row_start + num_rows; ++r) {
            for (int c = col_start; c < col_start + num_cols; ++c) {
                QTextTableCell cell = table->cellAt(r, c);
                const int rspan = cell.rowSpan();
                const int cspan = cell.columnSpan();
                if (rspan != 1) {
                    int cr = cell.row();
                    if (cr != r)
                        continue;
                }
                if (cspan != 1) {
                    int cc = cell.column();
                    if (cc != c)
                        continue;
                }

                // add the QTextBeginningOfFrame
                QTextCharFormat cellFormat = cell.format();
                if (r + rspan >= row_start + num_rows) {
                    cellFormat.setTableCellRowSpan(row_start + num_rows - r);
                }
                if (c + cspan >= col_start + num_cols) {
                    cellFormat.setTableCellColumnSpan(col_start + num_cols - c);
                }
                const int charFormatIndex = convertFormatIndex(cellFormat, objectIndex);

                int blockIdx = -2;
                const int cellPos = cell.firstPosition();
                QTextBlock block = src->blocksFind(cellPos);
                if (block.position() == cellPos) {
                    blockIdx = convertFormatIndex(block.blockFormat());
                }

                dst->insertBlock(QTextBeginningOfFrame, insertPos, blockIdx, charFormatIndex);
                ++insertPos;

                // nothing to add for empty cells
                if (cell.lastPosition() > cellPos) {
                    // add the contents
                    appendFragments(cellPos, cell.lastPosition());
                }
            }
        }

        // add end of table
        int end = table->lastPosition();
        appendFragment(end, end+1, objectIndex);
    } else {
        appendFragments(cursor.selectionStart(), cursor.selectionEnd());
    }
}

void HtmlExporter::emitTable( const QTextTable *table )
{
    //qDebug() << "emitTable" << html;
    QTextTableFormat format = table->format();

    html += QLatin1String( "\n<table" );

    if ( format.hasProperty( QTextFormat::FrameBorder ) ) {
        emitAttribute( "border", QString::number( format.border() ) );
    }

    emitFloatStyle( format.position() );
    emitAlignment( format.alignment() );
    emitTextLength( "width", format.width() );

    if ( format.hasProperty( QTextFormat::TableCellSpacing ) ) {
        emitAttribute( "cellspacing", QString::number( format.cellSpacing() ) );
    }
    if ( format.hasProperty( QTextFormat::TableCellPadding ) ) {
        emitAttribute( "cellpadding", QString::number( format.cellPadding() ) );
    }

    QBrush bg = format.background();
    if ( bg != Qt::NoBrush ) {
        emitAttribute( "bgcolor", bg.color().name() );
    }

    html += QLatin1Char( '>' );

    const int rows = table->rows();
    const int columns = table->columns();

    QVector<QTextLength> columnWidths = format.columnWidthConstraints();
    if ( columnWidths.isEmpty() ) {
        columnWidths.resize( columns );
        columnWidths.fill( QTextLength() );
    }
//    Q_ASSERT(columnWidths.count() == columns);

    QVarLengthArray<bool> widthEmittedForColumn( columns );
    for ( int i = 0; i < columns; ++i ) {
        widthEmittedForColumn[i] = false;
    }

    const int headerRowCount = qMin( format.headerRowCount(), rows );
    if ( headerRowCount > 0 ) {
        html += QLatin1String( "<thead>" );
    }

    for ( int row = 0; row < rows; ++row ) {
        html += QLatin1String( "\n<tr>" );

        for ( int col = 0; col < columns; ++col ) {
            const QTextTableCell cell = table->cellAt( row, col );

            // for col/rowspans
            if ( cell.row() != row ) {
                continue;
            }

            if ( cell.column() != col ) {
                continue;
            }

            html += QLatin1String( "\n<td" );

            if ( !widthEmittedForColumn[col] ) {
                emitTextLength( "width", columnWidths.at( col ) );
                widthEmittedForColumn[col] = true;
            }

            if ( cell.columnSpan() > 1 ) {
                emitAttribute( "colspan", QString::number( cell.columnSpan() ) );
            }

            if ( cell.rowSpan() > 1 ) {
                emitAttribute( "rowspan", QString::number( cell.rowSpan() ) );
            }

            const QTextCharFormat cellFormat = cell.format();
            QBrush bg = cellFormat.background();
            if ( bg != Qt::NoBrush ) {
                emitAttribute( "bgcolor", bg.color().name() );
            }

            html += QLatin1Char( '>' );

            emitFrame( cell.begin() );

            html += QLatin1String( "</td>" );
        }

        html += QLatin1String( "</tr>" );
        if ( headerRowCount > 0 && row == headerRowCount - 1 ) {
            html += QLatin1String( "</thead>" );
        }
    }

    html += QLatin1String( "</table>" );
}