C++ QTextList::itemNumber方法代码示例

void HtmlExporter::emitBlock( const QTextBlock &block )
{
    // save and later restore, in case we 'change' the default format by
    // emitting block char format information

    // NOTE the bottom line is commented, to use default charFormat, which can be set from outside.
    //QTextCharFormat oldDefaultCharFormat = defaultCharFormat;

    QString blockTag;
    bool isBlockQuote = false;
    const QTextBlockFormat blockFormat = block.blockFormat();

    if ( blockFormat.hasProperty( BilboTextFormat::IsBlockQuote ) && 
         blockFormat.boolProperty( BilboTextFormat::IsBlockQuote ) ) {
        isBlockQuote = true;
    }
    QTextList *list = block.textList();
    if ( list ) {
        if ( list->itemNumber( block ) == 0 ) { // first item? emit <ul> or appropriate
//    qDebug() << "first item" << endl;
            if ( isBlockQuote ) {
                html += QLatin1String( "<blockquote>" );
            }
            const QTextListFormat format = list->format();
            const int style = format.style();
            switch ( style ) {
                case QTextListFormat::ListDecimal:
                    html += QLatin1String( "<ol" );
                    break;
                case QTextListFormat::ListDisc:
                    html += QLatin1String( "<ul" );
                    break;
                case QTextListFormat::ListCircle:
                    html += QLatin1String( "<ul type=\"circle\"" );
                    break;
                case QTextListFormat::ListSquare:
                    html += QLatin1String( "<ul type=\"square\"" );
                    break;
                case QTextListFormat::ListLowerAlpha:
                    html += QLatin1String( "<ol type=\"a\"" );
                    break;
                case QTextListFormat::ListUpperAlpha:
                    html += QLatin1String( "<ol type=\"A\"" );
                    break;
                default:
                    html += QLatin1String( "<ul" ); // ### should not happen
                    //qDebug() << html;
            }
            /*
            if (format.hasProperty(QTextFormat::ListIndent)) {
                html += QLatin1String(" style=\"-qt-list-indent: ");
                html += QString::number(format.indent());
                html += QLatin1String(";\"");
            }*/

            html += QLatin1Char( '>' );
        }
        blockTag = QLatin1String( "li" );
//         html += QLatin1String( "<li " );
    }

//     const QTextBlockFormat blockFormat = block.blockFormat();
    if ( blockFormat.hasProperty( QTextFormat::BlockTrailingHorizontalRulerWidth ) ) { 
        if ( ( blockFormat.hasProperty( BilboTextFormat::IsHtmlTagSign ) ) && 
            ( blockFormat.boolProperty( BilboTextFormat::IsHtmlTagSign ) ) ) {
            html += QLatin1String( "<!--split-->" );
            return;
        } else {
            html += QLatin1String( "<hr" );
    
            QTextLength width = blockFormat.lengthProperty( QTextFormat::BlockTrailingHorizontalRulerWidth );
            if ( width.type() != QTextLength::VariableLength ) {
                emitTextLength( "width", width );
            } else {
                html += QLatin1Char( ' ' );
            }
    
            html += QLatin1String( "/>" );
            return;
        }
    }

    const bool pre = blockFormat.nonBreakableLines();
    if ( pre ) {
//   qDebug() << "NonBreakable lines" << endl;
//         if (list) {
//             html += QLatin1Char('>');
//   }
//         html += QLatin1String( "<pre" );
//         emitBlockAttributes( block );
//         html += QLatin1Char( '>' );
        blockTag = QLatin1String( "pre" );

    } else {
        if (!list) {
            if ( isBlockQuote ) {
                html += QLatin1String( "<blockquote>" );
            }

            if ( ( blockFormat.hasProperty( BilboTextFormat::HtmlHeading ) ) && (
//.........这里部分代码省略.........

void MainWindow::showList()
{
    QTextCursor cursor = editor->textCursor();
    QTextFrame *frame = cursor.currentFrame();

    if (!frame)
        return;

    QTreeWidget *treeWidget = new QTreeWidget;
    treeWidget->setColumnCount(1);
    QStringList headerLabels;
    headerLabels << tr("Lists");
    treeWidget->setHeaderLabels(headerLabels);

    QTreeWidgetItem *parentItem = 0;
    QTreeWidgetItem *item;
    QTreeWidgetItem *lastItem = 0;
    parentItems.clear();
    previousItems.clear();

//! [3]
    QTextFrame::iterator it;
    for (it = frame->begin(); !(it.atEnd()); ++it) {

        QTextBlock block = it.currentBlock();

        if (block.isValid()) {

            QTextList *list = block.textList();

            if (list) {
                int index = list->itemNumber(block);
//! [3]
                if (index == 0) {
                    parentItems.append(parentItem);
                    previousItems.append(lastItem);
                    listStructures.append(list);
                    parentItem = lastItem;
                    lastItem = 0;

                    if (parentItem != 0)
                        item = new QTreeWidgetItem(parentItem, lastItem);
                    else
                        item = new QTreeWidgetItem(treeWidget, lastItem);

                } else {

                    while (parentItem != 0 && listStructures.last() != list) {
                        listStructures.pop_back();
                        parentItem = parentItems.takeLast();
                        lastItem = previousItems.takeLast();
                    }
                    if (parentItem != 0)
                        item = new QTreeWidgetItem(parentItem, lastItem);
                    else
                        item = new QTreeWidgetItem(treeWidget, lastItem);
                }
                item->setText(0, block.text());
                lastItem = item;
                /*
//! [4]
                processListItem(list, index);
//! [4]
                */
//! [5]
            }
//! [5] //! [6]
        }
//! [6] //! [7]
    }
//! [7]

    treeWidget->setWindowTitle(tr("List Contents"));
    treeWidget->show();
}

void KoTextWriter::write(const QTextDocument *document, int from, int to)
{
    d->document = const_cast<QTextDocument*>(document);
    d->styleManager = KoTextDocument(document).styleManager();

    QTextBlock fromblock = document->findBlock(from);
    QTextBlock toblock = document->findBlock(to);

    QTextCursor fromcursor(fromblock);

    QTextTable *currentTable = fromcursor.currentTable();
    QTextList *currentList = fromcursor.currentList();

    // NOTE even better would be if we create a new table/list out of multiple selected
    // tablecells/listitems that contain only the selected cells/items. But following
    // at least enables copying a whole list/table while still being able to copy/paste
    // only parts of the text within a list/table (see also bug 275990).
    if (currentTable || currentList) {
        if (from == 0 && to < 0) {
            // save everything means also save current table and list
            currentTable = 0;
            currentList = 0;
        } else {
            QTextCursor tocursor(toblock);
            //fromcursor.setPosition(from, QTextCursor::KeepAnchor);
            tocursor.setPosition(to, QTextCursor::KeepAnchor);

            if (!fromcursor.movePosition(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor)) {
                fromcursor = QTextCursor();
            }
            if (!tocursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor)) {
                tocursor = QTextCursor();
            }

            // save the whole table if all cells are selected
            if (currentTable) {
                QTextTableCell fromcell = currentTable->cellAt(from);
                QTextTableCell tocell = currentTable->cellAt(to);
                if ((fromcursor.isNull() || fromcursor.currentTable() != currentTable) &&
                    (tocursor.isNull() || tocursor.currentTable() != currentTable) &&
                    fromcell.column() == 0 && fromcell.row() == 0 &&
                    tocell.column() == currentTable->columns()-1 && tocell.row() == currentTable->rows()-1
                ) {
                    currentTable = 0;
                }
            }

            // save the whole list if all list-items are selected
            if (currentList) {
                int fromindex = currentList->itemNumber(fromblock);
                int toindex = currentList->itemNumber(toblock);
                if ((fromcursor.isNull() || fromcursor.currentList() != currentList) &&
                    (tocursor.isNull() || tocursor.currentList() != currentList) &&
                    fromindex <= 0 && (toindex < 0 || toindex == currentList->count()-1)
                ) {
                    currentList = 0;
                }
            }
        }
    }

    QHash<QTextList *, QString> listStyles = d->saveListStyles(fromblock, to);
    d->globalFrom = from;
    d->globalTo = to;
    d->writeBlocks(const_cast<QTextDocument *>(document), from, to, listStyles, currentTable, currentList);
}