QTextHtmlImporter Class Reference

#include <qtextdocumentfragment_p.h>

Inheritance diagram for QTextHtmlImporter:

Classes
struct	List
struct	RowColSpanInfo
struct	Table
struct	TableCellIterator

Public Types
enum	ImportMode { ImportToFragment, ImportToDocument }
Public Types inherited from QTextHtmlParser
enum	Margin { MarginTop, MarginRight, MarginBottom, MarginLeft }

Public Functions
void	import ()
	QTextHtmlImporter (QTextDocument *_doc, const QString &html, ImportMode mode, const QTextDocument *resourceProvider=0)
Public Functions inherited from QTextHtmlParser
const QTextHtmlParserNode &	at (int i) const
int	bottomMargin (int i) const
int	bottomPadding (int i) const
int	count () const
int	depth (int i) const
void	dumpHtml ()
int	last () const
int	leftMargin (int i) const
int	leftPadding (int i) const
QTextHtmlParserNode &	operator[] (int i)
void	parse (const QString &text, const QTextDocument *resourceProvider)
int	rightMargin (int i) const
int	rightPadding (int i) const
int	topMargin (int i) const
int	topPadding (int i) const

Private Types
enum	ProcessNodeResult { ContinueWithNextNode, ContinueWithCurrentNode, ContinueWithNextSibling }
enum	WhiteSpace { RemoveWhiteSpace, CollapseWhiteSpace, PreserveWhiteSpace }

Private Functions
void	appendBlock (const QTextBlockFormat &format, QTextCharFormat charFmt=QTextCharFormat())
bool	appendNodeText ()
bool	closeTag ()
ProcessNodeResult	processBlockNode ()
ProcessNodeResult	processSpecialNodes ()
Table	scanTable (int tableNodeIdx)

Properties
bool	blockTagClosed
WhiteSpace	compressNextWhitespace
const QTextHtmlParserNode *	currentNode
int	currentNodeIdx
QTextCursor	cursor
QTextDocument *	doc
bool	forceBlockMerging
bool	hasBlock
ImportMode	importMode
int	indent
QVector< List >	lists
QStringList	namedAnchors
QVector< Table >	tables
QTextHtmlParserNode::WhiteSpaceMode	wsm

Friends
struct	Table

Additional Inherited Members
Static Public Functions inherited from QTextHtmlParser
static int	lookupElement (const QString &element)
Protected Functions inherited from QTextHtmlParser
void	applyAttributes (const QStringList &attributes)
QVector< QCss::Declaration >	declarationsForNode (int node) const
void	eatSpace ()
bool	hasPrefix (QChar c, int lookahead=0) const
void	importStyleSheet (const QString &href)
int	margin (int i, int mar) const
QTextHtmlParserNode *	newNode (int parent)
bool	nodeIsChildOf (int i, QTextHTMLElements id) const
void	parse ()
QStringList	parseAttributes ()
void	parseCloseTag ()
QString	parseEntity ()
void	parseExclamationTag ()
void	parseTag ()
QString	parseWord ()
void	resolveNode ()
QTextHtmlParserNode *	resolveParent ()
void	resolveStyleSheetImports (const QCss::StyleSheet &sheet)
Protected Variables inherited from QTextHtmlParser
QVector< ExternalStyleSheet >	externalStyleSheets
QVector< QCss::StyleSheet >	inlineStyleSheets
int	len
QVector< QTextHtmlParserNode >	nodes
int	pos
const QTextDocument *	resourceProvider
bool	textEditMode
QString	txt

Detailed Description

Definition at line 118 of file qtextdocumentfragment_p.h.

Enumerations

ImportMode

enum QTextHtmlImporter::ImportMode

Enumerator
ImportToFragment
ImportToDocument

Definition at line 122 of file qtextdocumentfragment_p.h.

                    {
        ImportToFragment,
        ImportToDocument
    };

ProcessNodeResult

enum QTextHtmlImporter::ProcessNodeResult

private

Enumerator
ContinueWithNextNode
ContinueWithCurrentNode
ContinueWithNextSibling

Definition at line 138 of file qtextdocumentfragment_p.h.

{ ContinueWithNextNode, ContinueWithCurrentNode, ContinueWithNextSibling };

WhiteSpace

enum QTextHtmlImporter::WhiteSpace

private

Enumerator
RemoveWhiteSpace
CollapseWhiteSpace
PreserveWhiteSpace

Definition at line 213 of file qtextdocumentfragment_p.h.

    {
        RemoveWhiteSpace,
        CollapseWhiteSpace,
        PreserveWhiteSpace
    };

Constructors and Destructors

QTextHtmlImporter()

QTextHtmlImporter::QTextHtmlImporter	(	QTextDocument *	_doc,
		const QString &	html,
		ImportMode	mode,
		const QTextDocument *	resourceProvider = 0
	)

Definition at line 445 of file qtextdocumentfragment.cpp.

    : indent(0), compressNextWhitespace(PreserveWhiteSpace), doc(_doc), importMode(mode)
{
    cursor = QTextCursor(doc);
    wsm = QTextHtmlParserNode::WhiteSpaceNormal;

    QString html = _html;
    const int startFragmentPos = html.indexOf(QLatin1String("<!--StartFragment-->"));
    if (startFragmentPos != -1) {
        QString qt3RichTextHeader(QLatin1String("<meta name=\"qrichtext\" content=\"1\" />"));

        // Hack for Qt3
        const bool hasQtRichtextMetaTag = html.contains(qt3RichTextHeader);

        const int endFragmentPos = html.indexOf(QLatin1String("<!--EndFragment-->"));
        if (startFragmentPos < endFragmentPos)
            html = html.mid(startFragmentPos, endFragmentPos - startFragmentPos);
        else
            html = html.mid(startFragmentPos);

        if (hasQtRichtextMetaTag)
            html.prepend(qt3RichTextHeader);
    }

    parse(html, resourceProvider ? resourceProvider : doc);
//    dumpHtml();
}

Functions

appendBlock()

void QTextHtmlImporter::appendBlock ( const QTextBlockFormat &  format, QTextCharFormat  charFmt = QTextCharFormat()  )

private

Definition at line 1185 of file qtextdocumentfragment.cpp.

Referenced by appendNodeText(), import(), processBlockNode(), and processSpecialNodes().

{
    if (!namedAnchors.isEmpty()) {
        charFmt.setAnchor(true);
        charFmt.setAnchorNames(namedAnchors);
        namedAnchors.clear();
    }

    cursor.insertBlock(format, charFmt);

    if (wsm != QTextHtmlParserNode::WhiteSpacePre && wsm != QTextHtmlParserNode::WhiteSpacePreWrap)
        compressNextWhitespace = RemoveWhiteSpace;
}

appendNodeText()

bool QTextHtmlImporter::appendNodeText ( )

private

Definition at line 581 of file qtextdocumentfragment.cpp.

Referenced by import().

{
    const int initialCursorPosition = cursor.position();
    QTextCharFormat format = currentNode->charFormat;

    if(wsm == QTextHtmlParserNode::WhiteSpacePre || wsm == QTextHtmlParserNode::WhiteSpacePreWrap)
        compressNextWhitespace = PreserveWhiteSpace;

    QString text = currentNode->text;

    QString textToInsert;
    textToInsert.reserve(text.size());

    for (int i = 0; i < text.length(); ++i) {
        QChar ch = text.at(i);

        if (ch.isSpace()
            && ch != QChar::Nbsp
            && ch != QChar::ParagraphSeparator) {

            if (compressNextWhitespace == CollapseWhiteSpace)
                compressNextWhitespace = RemoveWhiteSpace; // allow this one, and remove the ones coming next.
            else if(compressNextWhitespace == RemoveWhiteSpace)
                continue;

            if (wsm == QTextHtmlParserNode::WhiteSpacePre
                || textEditMode
               ) {
                if (ch == QLatin1Char('\n')) {
                    if (textEditMode)
                        continue;
                } else if (ch == QLatin1Char('\r')) {
                    continue;
                }
            } else if (wsm != QTextHtmlParserNode::WhiteSpacePreWrap) {
                compressNextWhitespace = RemoveWhiteSpace;
                if (wsm == QTextHtmlParserNode::WhiteSpaceNoWrap)
                    ch = QChar::Nbsp;
                else
                    ch = QLatin1Char(' ');
            }
        } else {
            compressNextWhitespace = PreserveWhiteSpace;
        }

        if (ch == QLatin1Char('\n')
            || ch == QChar::ParagraphSeparator) {

            if (!textToInsert.isEmpty()) {
                cursor.insertText(textToInsert, format);
                textToInsert.clear();
            }

            QTextBlockFormat fmt = cursor.blockFormat();

            if (fmt.hasProperty(QTextFormat::BlockBottomMargin)) {
                QTextBlockFormat tmp = fmt;
                tmp.clearProperty(QTextFormat::BlockBottomMargin);
                cursor.setBlockFormat(tmp);
            }

            fmt.clearProperty(QTextFormat::BlockTopMargin);
            appendBlock(fmt, cursor.charFormat());
        } else {
            if (!namedAnchors.isEmpty()) {
                if (!textToInsert.isEmpty()) {
                    cursor.insertText(textToInsert, format);
                    textToInsert.clear();
                }

                format.setAnchor(true);
                format.setAnchorNames(namedAnchors);
                cursor.insertText(ch, format);
                namedAnchors.clear();
                format.clearProperty(QTextFormat::IsAnchor);
                format.clearProperty(QTextFormat::AnchorName);
            } else {
                textToInsert += ch;
            }
        }
    }

    if (!textToInsert.isEmpty()) {
        cursor.insertText(textToInsert, format);
    }

    return cursor.position() != initialCursorPosition;
}

closeTag()

bool QTextHtmlImporter::closeTag ( )

private

Definition at line 779 of file qtextdocumentfragment.cpp.

Referenced by import().

{
    const QTextHtmlParserNode *closedNode = &at(currentNodeIdx - 1);
    const int endDepth = depth(currentNodeIdx) - 1;
    int depth = this->depth(currentNodeIdx - 1);
    bool blockTagClosed = false;

    while (depth > endDepth) {
        Table *t = 0;
        if (!tables.isEmpty())
            t = &tables.last();

        switch (closedNode->id) {
            case Html_tr:
                if (t && !t->isTextFrame) {
                    ++t->currentRow;

                    // for broken html with rowspans but missing tr tags
                    while (!t->currentCell.atEnd() && t->currentCell.row < t->currentRow)
                        ++t->currentCell;
                }

                blockTagClosed = true;
                break;

            case Html_table:
                if (!t)
                    break;
                indent = t->lastIndent;

                tables.resize(tables.size() - 1);
                t = 0;

                if (tables.isEmpty()) {
                    cursor = doc->rootFrame()->lastCursorPosition();
                } else {
                    t = &tables.last();
                    if (t->isTextFrame)
                        cursor = t->frame->lastCursorPosition();
                    else if (!t->currentCell.atEnd())
                        cursor = t->currentCell.cell().lastCursorPosition();
                }

                // we don't need an extra block after tables, so we don't
                // claim to have closed one for the creation of a new one
                // in import()
                blockTagClosed = false;
                compressNextWhitespace = RemoveWhiteSpace;
                break;

            case Html_th:
            case Html_td:
                if (t && !t->isTextFrame)
                    ++t->currentCell;
                blockTagClosed = true;
                compressNextWhitespace = RemoveWhiteSpace;
                break;

            case Html_ol:
            case Html_ul:
                if (lists.isEmpty())
                    break;
                lists.resize(lists.size() - 1);
                --indent;
                blockTagClosed = true;
                break;

            case Html_br:
                compressNextWhitespace = RemoveWhiteSpace;
                break;

            case Html_div:
                if (closedNode->children.isEmpty())
                    break;
                // fall through
            default:
                if (closedNode->isBlock())
                    blockTagClosed = true;
                break;
        }

        closedNode = &at(closedNode->parent);
        --depth;
    }

    return blockTagClosed;
}

import()

void QTextHtmlImporter::import

(

)

Definition at line 473 of file qtextdocumentfragment.cpp.

Referenced by QTextDocumentFragment::fromHtml(), and QTextDocument::setHtml().

{
    cursor.beginEditBlock();
    hasBlock = true;
    forceBlockMerging = false;
    compressNextWhitespace = RemoveWhiteSpace;
    blockTagClosed = false;
    for (currentNodeIdx = 0; currentNodeIdx < count(); ++currentNodeIdx) {
        currentNode = &at(currentNodeIdx);
        wsm = textEditMode ? QTextHtmlParserNode::WhiteSpacePreWrap : currentNode->wsm;

        /*
         * process each node in three stages:
         * 1) check if the hierarchy changed and we therefore passed the
         *    equivalent of a closing tag -> we may need to finish off
         *    some structures like tables
         *
         * 2) check if the current node is a special node like a
         *    <table>, <ul> or <img> tag that requires special processing
         *
         * 3) if the node should result in a QTextBlock create one and
         *    finally insert text that may be attached to the node
         */

        /* emit 'closing' table blocks or adjust current indent level
         * if we
         *  1) are beyond the first node
         *  2) the current node not being a child of the previous node
         *      means there was a tag closing in the input html
         */
        if (currentNodeIdx > 0 && (currentNode->parent != currentNodeIdx - 1)) {
            blockTagClosed = closeTag();
            // visually collapse subsequent block tags, but if the element after the closed block tag
            // is for example an inline element (!isBlock) we have to make sure we start a new paragraph by setting
            // hasBlock to false.
            if (blockTagClosed
                && !currentNode->isBlock()
                && currentNode->id != Html_unknown)
            {
                hasBlock = false;
            } else if (hasBlock) {
                // when collapsing subsequent block tags we need to clear the block format
                QTextBlockFormat blockFormat = currentNode->blockFormat;
                blockFormat.setIndent(indent);

                QTextBlockFormat oldFormat = cursor.blockFormat();
                if (oldFormat.hasProperty(QTextFormat::PageBreakPolicy)) {
                    QTextFormat::PageBreakFlags pageBreak = oldFormat.pageBreakPolicy();
                    if (pageBreak == QTextFormat::PageBreak_AlwaysAfter)
                        /* We remove an empty paragrah that requested a page break after.
                           moving that request to the next paragraph means we also need to make
                            that a pagebreak before to keep the same visual appearance.
                        */
                        pageBreak = QTextFormat::PageBreak_AlwaysBefore;
                    blockFormat.setPageBreakPolicy(pageBreak);
                }

                cursor.setBlockFormat(blockFormat);
            }
        }

        if (currentNode->displayMode == QTextHtmlElement::DisplayNone) {
            if (currentNode->id == Html_title)
                doc->setMetaInformation(QTextDocument::DocumentTitle, currentNode->text);
            // ignore explicitly 'invisible' elements
            continue;
        }

        if (processSpecialNodes() == ContinueWithNextNode)
            continue;

        // make sure there's a block for 'Blah' after <ul><li>foo</ul>Blah
        if (blockTagClosed
            && !hasBlock
            && !currentNode->isBlock()
            && !currentNode->text.isEmpty() && !currentNode->hasOnlyWhitespace()
            && currentNode->displayMode == QTextHtmlElement::DisplayInline) {

            QTextBlockFormat block = currentNode->blockFormat;
            block.setIndent(indent);

            appendBlock(block, currentNode->charFormat);

            hasBlock = true;
        }

        if (currentNode->isBlock()) {
            QTextHtmlImporter::ProcessNodeResult result = processBlockNode();
            if (result == ContinueWithNextNode) {
                continue;
            } else if (result == ContinueWithNextSibling) {
                currentNodeIdx += currentNode->children.size();
                continue;
            }
        }

        if (currentNode->charFormat.isAnchor() && !currentNode->charFormat.anchorName().isEmpty()) {
            namedAnchors.append(currentNode->charFormat.anchorName());
        }

        if (appendNodeText())
            hasBlock = false; // if we actually appended text then we don't
                              // have an empty block anymore
    }

    cursor.endEditBlock();
}

processBlockNode()

QTextHtmlImporter::ProcessNodeResult QTextHtmlImporter::processBlockNode ( )

private

Definition at line 1018 of file qtextdocumentfragment.cpp.

Referenced by import().

{
    QTextBlockFormat block;
    QTextCharFormat charFmt;
    bool modifiedBlockFormat = true;
    bool modifiedCharFormat = true;

    if (currentNode->isTableCell() && !tables.isEmpty()) {
        Table &t = tables.last();
        if (!t.isTextFrame && !t.currentCell.atEnd()) {
            QTextTableCell cell = t.currentCell.cell();
            if (cell.isValid()) {
                QTextTableCellFormat fmt = cell.format().toTableCellFormat();
                if (topPadding(currentNodeIdx) >= 0)
                    fmt.setTopPadding(topPadding(currentNodeIdx));
                if (bottomPadding(currentNodeIdx) >= 0)
                    fmt.setBottomPadding(bottomPadding(currentNodeIdx));
                if (leftPadding(currentNodeIdx) >= 0)
                    fmt.setLeftPadding(leftPadding(currentNodeIdx));
                if (rightPadding(currentNodeIdx) >= 0)
                    fmt.setRightPadding(rightPadding(currentNodeIdx));
                cell.setFormat(fmt);

                cursor.setPosition(cell.firstPosition());
            }
        }
        hasBlock = true;
        compressNextWhitespace = RemoveWhiteSpace;

        if (currentNode->charFormat.background().style() != Qt::NoBrush) {
            charFmt.setBackground(currentNode->charFormat.background());
            cursor.mergeBlockCharFormat(charFmt);
        }
    }

    if (hasBlock) {
        block = cursor.blockFormat();
        charFmt = cursor.blockCharFormat();
        modifiedBlockFormat = false;
        modifiedCharFormat = false;
    }

    // collapse
    {
        qreal tm = qreal(topMargin(currentNodeIdx));
        if (tm > block.topMargin()) {
            block.setTopMargin(tm);
            modifiedBlockFormat = true;
        }
    }

    int bottomMargin = this->bottomMargin(currentNodeIdx);

    // for list items we may want to collapse with the bottom margin of the
    // list.
    const QTextHtmlParserNode *parentNode = currentNode->parent ? &at(currentNode->parent) : 0;
    if ((currentNode->id == Html_li || currentNode->id == Html_dt || currentNode->id == Html_dd)
        && parentNode
        && (parentNode->isListStart() || parentNode->id == Html_dl)
        && (parentNode->children.last() == currentNodeIdx)) {
        bottomMargin = qMax(bottomMargin, this->bottomMargin(currentNode->parent));
    }

    if (block.bottomMargin() != bottomMargin) {
        block.setBottomMargin(bottomMargin);
        modifiedBlockFormat = true;
    }

    {
        const qreal lm = leftMargin(currentNodeIdx);
        const qreal rm = rightMargin(currentNodeIdx);

        if (block.leftMargin() != lm) {
            block.setLeftMargin(lm);
            modifiedBlockFormat = true;
        }
        if (block.rightMargin() != rm) {
            block.setRightMargin(rm);
            modifiedBlockFormat = true;
        }
    }

    if (currentNode->id != Html_li
        && indent != 0
        && (lists.isEmpty()
            || !hasBlock
            || !lists.last().list
            || lists.last().list->itemNumber(cursor.block()) == -1
           )
       ) {
        block.setIndent(indent);
        modifiedBlockFormat = true;
    }

    if (currentNode->blockFormat.propertyCount() > 0) {
        modifiedBlockFormat = true;
        block.merge(currentNode->blockFormat);
    }

    if (currentNode->charFormat.propertyCount() > 0) {
        modifiedCharFormat = true;
        charFmt.merge(currentNode->charFormat);
    }

    // ####################
    //                block.setFloatPosition(node->cssFloat);

    if (wsm == QTextHtmlParserNode::WhiteSpacePre) {
        block.setNonBreakableLines(true);
        modifiedBlockFormat = true;
    }

    if (currentNode->charFormat.background().style() != Qt::NoBrush && !currentNode->isTableCell()) {
        block.setBackground(currentNode->charFormat.background());
        modifiedBlockFormat = true;
    }

    if (hasBlock && (!currentNode->isEmptyParagraph || forceBlockMerging)) {
        if (modifiedBlockFormat)
            cursor.setBlockFormat(block);
        if (modifiedCharFormat)
            cursor.setBlockCharFormat(charFmt);
    } else {
        if (currentNodeIdx == 1 && cursor.position() == 0 && currentNode->isEmptyParagraph) {
            cursor.setBlockFormat(block);
            cursor.setBlockCharFormat(charFmt);
        } else {
            appendBlock(block, charFmt);
        }
    }

    if (currentNode->userState != -1)
        cursor.block().setUserState(currentNode->userState);

    if (currentNode->id == Html_li && !lists.isEmpty()) {
        List &l = lists.last();
        if (l.list) {
            l.list->add(cursor.block());
        } else {
            l.list = cursor.createList(l.format);
            const qreal listTopMargin = topMargin(l.listNode);
            if (listTopMargin > block.topMargin()) {
                block.setTopMargin(listTopMargin);
                cursor.mergeBlockFormat(block);
            }
        }
        if (hasBlock) {
            QTextBlockFormat fmt;
            fmt.setIndent(0);
            cursor.mergeBlockFormat(fmt);
        }
    }

    forceBlockMerging = false;
    if (currentNode->id == Html_body || currentNode->id == Html_html)
        forceBlockMerging = true;

    if (currentNode->isEmptyParagraph) {
        hasBlock = false;
        return ContinueWithNextSibling;
    }

    hasBlock = true;
    blockTagClosed = false;
    return ContinueWithCurrentNode;
}

processSpecialNodes()

QTextHtmlImporter::ProcessNodeResult QTextHtmlImporter::processSpecialNodes ( )

private

Definition at line 670 of file qtextdocumentfragment.cpp.

Referenced by import().

{
    switch (currentNode->id) {
        case Html_body:
            if (currentNode->charFormat.background().style() != Qt::NoBrush) {
                QTextFrameFormat fmt = doc->rootFrame()->frameFormat();
                fmt.setBackground(currentNode->charFormat.background());
                doc->rootFrame()->setFrameFormat(fmt);
                const_cast<QTextHtmlParserNode *>(currentNode)->charFormat.clearProperty(QTextFormat::BackgroundBrush);
            }
            compressNextWhitespace = RemoveWhiteSpace;
            break;

        case Html_ol:
        case Html_ul: {
            QTextListFormat::Style style = currentNode->listStyle;

            if (currentNode->id == Html_ul && !currentNode->hasOwnListStyle && currentNode->parent) {
                const QTextHtmlParserNode *n = &at(currentNode->parent);
                while (n) {
                    if (n->id == Html_ul) {
                        style = nextListStyle(currentNode->listStyle);
                    }
                    if (n->parent)
                        n = &at(n->parent);
                    else
                        n = 0;
                }
            }

            QTextListFormat listFmt;
            listFmt.setStyle(style);
            if (!currentNode->textListNumberPrefix.isNull())
                listFmt.setNumberPrefix(currentNode->textListNumberPrefix);
            if (!currentNode->textListNumberSuffix.isNull())
                listFmt.setNumberSuffix(currentNode->textListNumberSuffix);

            ++indent;
            if (currentNode->hasCssListIndent)
                listFmt.setIndent(currentNode->cssListIndent);
            else
                listFmt.setIndent(indent);

            List l;
            l.format = listFmt;
            l.listNode = currentNodeIdx;
            lists.append(l);
            compressNextWhitespace = RemoveWhiteSpace;

            // broken html: <ul>Text here<li>Foo
            const QString simpl = currentNode->text.simplified();
            if (simpl.isEmpty() || simpl.at(0).isSpace())
                return ContinueWithNextNode;
            break;
        }

        case Html_table: {
            Table t = scanTable(currentNodeIdx);
            tables.append(t);
            hasBlock = false;
            compressNextWhitespace = RemoveWhiteSpace;
            return ContinueWithNextNode;
        }

        case Html_tr:
            return ContinueWithNextNode;

        case Html_img: {
            QTextImageFormat fmt;
            fmt.setName(currentNode->imageName);

            fmt.merge(currentNode->charFormat);

            if (currentNode->imageWidth != -1)
                fmt.setWidth(currentNode->imageWidth);
            if (currentNode->imageHeight != -1)
                fmt.setHeight(currentNode->imageHeight);

            cursor.insertImage(fmt, QTextFrameFormat::Position(currentNode->cssFloat));

            cursor.movePosition(QTextCursor::Left, QTextCursor::KeepAnchor);
            cursor.mergeCharFormat(currentNode->charFormat);
            cursor.movePosition(QTextCursor::Right);
            compressNextWhitespace = CollapseWhiteSpace;

            hasBlock = false;
            return ContinueWithNextNode;
        }

        case Html_hr: {
            QTextBlockFormat blockFormat = currentNode->blockFormat;
            blockFormat.setTopMargin(topMargin(currentNodeIdx));
            blockFormat.setBottomMargin(bottomMargin(currentNodeIdx));
            blockFormat.setProperty(QTextFormat::BlockTrailingHorizontalRulerWidth, currentNode->width);
            if (hasBlock && importMode == ImportToDocument)
                cursor.mergeBlockFormat(blockFormat);
            else
                appendBlock(blockFormat);
            hasBlock = false;
            compressNextWhitespace = RemoveWhiteSpace;
            return ContinueWithNextNode;
        }

        default: break;
    }
    return ContinueWithCurrentNode;
}

scanTable()

QTextHtmlImporter::Table QTextHtmlImporter::scanTable ( int  tableNodeIdx )

private

Definition at line 867 of file qtextdocumentfragment.cpp.

Referenced by processSpecialNodes().

{
    Table table;
    table.columns = 0;

    QVector<QTextLength> columnWidths;

    int tableHeaderRowCount = 0;
    QVector<int> rowNodes;
    rowNodes.reserve(at(tableNodeIdx).children.count());
    foreach (int row, at(tableNodeIdx).children)
        switch (at(row).id) {
            case Html_tr:
                rowNodes += row;
                break;
            case Html_thead:
            case Html_tbody:
            case Html_tfoot:
                foreach (int potentialRow, at(row).children)
                    if (at(potentialRow).id == Html_tr) {
                        rowNodes += potentialRow;
                        if (at(row).id == Html_thead)
                            ++tableHeaderRowCount;
                    }
                break;
            default: break;
        }

    QVector<RowColSpanInfo> rowColSpans;
    QVector<RowColSpanInfo> rowColSpanForColumn;

    int effectiveRow = 0;
    foreach (int row, rowNodes) {
        int colsInRow = 0;

        foreach (int cell, at(row).children)
            if (at(cell).isTableCell()) {
                // skip all columns with spans from previous rows
                while (colsInRow < rowColSpanForColumn.size()) {
                    const RowColSpanInfo &spanInfo = rowColSpanForColumn[colsInRow];

                    if (spanInfo.row + spanInfo.rowSpan > effectiveRow) {
                        Q_ASSERT(spanInfo.col == colsInRow);
                        colsInRow += spanInfo.colSpan;
                    } else
                        break;
                }

                const QTextHtmlParserNode &c = at(cell);
                const int currentColumn = colsInRow;
                colsInRow += c.tableCellColSpan;

                RowColSpanInfo spanInfo;
                spanInfo.row = effectiveRow;
                spanInfo.col = currentColumn;
                spanInfo.colSpan = c.tableCellColSpan;
                spanInfo.rowSpan = c.tableCellRowSpan;
                if (spanInfo.colSpan > 1 || spanInfo.rowSpan > 1)
                    rowColSpans.append(spanInfo);

                columnWidths.resize(qMax(columnWidths.count(), colsInRow));
                rowColSpanForColumn.resize(columnWidths.size());
                for (int i = currentColumn; i < currentColumn + c.tableCellColSpan; ++i) {
                    if (columnWidths.at(i).type() == QTextLength::VariableLength) {
                        QTextLength w = c.width;
                        if (c.tableCellColSpan > 1 && w.type() != QTextLength::VariableLength)
                            w = QTextLength(w.type(), w.value(100.) / c.tableCellColSpan);
                        columnWidths[i] = w;
                    }
                    rowColSpanForColumn[i] = spanInfo;
                }
            }

        table.columns = qMax(table.columns, colsInRow);

        ++effectiveRow;
    }
    table.rows = effectiveRow;

    table.lastIndent = indent;
    indent = 0;

    if (table.rows == 0 || table.columns == 0)
        return table;

    QTextFrameFormat fmt;
    const QTextHtmlParserNode &node = at(tableNodeIdx);

    if (!node.isTextFrame) {
        QTextTableFormat tableFmt;
        tableFmt.setCellSpacing(node.tableCellSpacing);
        tableFmt.setCellPadding(node.tableCellPadding);
        if (node.blockFormat.hasProperty(QTextFormat::BlockAlignment))
            tableFmt.setAlignment(node.blockFormat.alignment());
        tableFmt.setColumns(table.columns);
        tableFmt.setColumnWidthConstraints(columnWidths);
        tableFmt.setHeaderRowCount(tableHeaderRowCount);
        fmt = tableFmt;
    }

    fmt.setTopMargin(topMargin(tableNodeIdx));
    fmt.setBottomMargin(bottomMargin(tableNodeIdx));
    fmt.setLeftMargin(leftMargin(tableNodeIdx)
                      + table.lastIndent * 40 // ##### not a good emulation
                      );
    fmt.setRightMargin(rightMargin(tableNodeIdx));

    // compatibility
    if (qFuzzyCompare(fmt.leftMargin(), fmt.rightMargin())
        && qFuzzyCompare(fmt.leftMargin(), fmt.topMargin())
        && qFuzzyCompare(fmt.leftMargin(), fmt.bottomMargin()))
        fmt.setProperty(QTextFormat::FrameMargin, fmt.leftMargin());

    fmt.setBorderStyle(node.borderStyle);
    fmt.setBorderBrush(node.borderBrush);
    fmt.setBorder(node.tableBorder);
    fmt.setWidth(node.width);
    fmt.setHeight(node.height);
    if (node.blockFormat.hasProperty(QTextFormat::PageBreakPolicy))
        fmt.setPageBreakPolicy(node.blockFormat.pageBreakPolicy());

    if (node.blockFormat.hasProperty(QTextFormat::LayoutDirection))
        fmt.setLayoutDirection(node.blockFormat.layoutDirection());
    if (node.charFormat.background().style() != Qt::NoBrush)
        fmt.setBackground(node.charFormat.background());
    fmt.setPosition(QTextFrameFormat::Position(node.cssFloat));

    if (node.isTextFrame) {
        if (node.isRootFrame) {
            table.frame = cursor.currentFrame();
            table.frame->setFrameFormat(fmt);
        } else
            table.frame = cursor.insertFrame(fmt);

        table.isTextFrame = true;
    } else {
        const int oldPos = cursor.position();
        QTextTable *textTable = cursor.insertTable(table.rows, table.columns, fmt.toTableFormat());
        table.frame = textTable;

        for (int i = 0; i < rowColSpans.count(); ++i) {
            const RowColSpanInfo &nfo = rowColSpans.at(i);
            textTable->mergeCells(nfo.row, nfo.col, nfo.rowSpan, nfo.colSpan);
        }

        table.currentCell = TableCellIterator(textTable);
        cursor.setPosition(oldPos); // restore for caption support which needs to be inserted right before the table
    }
    return table;
}

Friends and Related Functions

Table

friend struct Table

friend

Definition at line 193 of file qtextdocumentfragment_p.h.

Properties

blockTagClosed

bool QTextHtmlImporter::blockTagClosed

private

Definition at line 228 of file qtextdocumentfragment_p.h.

Referenced by closeTag(), import(), and processBlockNode().

compressNextWhitespace

WhiteSpace QTextHtmlImporter::compressNextWhitespace

private

Definition at line 220 of file qtextdocumentfragment_p.h.

Referenced by appendBlock(), appendNodeText(), closeTag(), import(), processBlockNode(), and processSpecialNodes().

currentNode

const QTextHtmlParserNode* QTextHtmlImporter::currentNode

private

Definition at line 230 of file qtextdocumentfragment_p.h.

Referenced by appendNodeText(), import(), processBlockNode(), and processSpecialNodes().

currentNodeIdx

int QTextHtmlImporter::currentNodeIdx

private

Definition at line 229 of file qtextdocumentfragment_p.h.

Referenced by closeTag(), import(), processBlockNode(), and processSpecialNodes().

cursor

QTextCursor QTextHtmlImporter::cursor

private

Definition at line 223 of file qtextdocumentfragment_p.h.

Referenced by appendBlock(), appendNodeText(), closeTag(), import(), processBlockNode(), processSpecialNodes(), QTextHtmlImporter(), and scanTable().

doc

QTextDocument* QTextHtmlImporter::doc

private

Definition at line 222 of file qtextdocumentfragment_p.h.

Referenced by closeTag(), import(), processSpecialNodes(), and QTextHtmlImporter().

forceBlockMerging

bool QTextHtmlImporter::forceBlockMerging

private

Definition at line 227 of file qtextdocumentfragment_p.h.

Referenced by import(), and processBlockNode().

hasBlock

bool QTextHtmlImporter::hasBlock

private

Definition at line 226 of file qtextdocumentfragment_p.h.

Referenced by import(), processBlockNode(), and processSpecialNodes().

importMode

ImportMode QTextHtmlImporter::importMode

private

Definition at line 225 of file qtextdocumentfragment_p.h.

Referenced by processSpecialNodes().

indent

int QTextHtmlImporter::indent

private

Definition at line 154 of file qtextdocumentfragment_p.h.

Referenced by closeTag(), import(), processBlockNode(), processSpecialNodes(), and scanTable().

lists

QVector<List> QTextHtmlImporter::lists

private

Definition at line 153 of file qtextdocumentfragment_p.h.

Referenced by closeTag(), processBlockNode(), and processSpecialNodes().

namedAnchors

QStringList QTextHtmlImporter::namedAnchors

private

Definition at line 158 of file qtextdocumentfragment_p.h.

Referenced by appendBlock(), appendNodeText(), and import().

tables

QVector<Table> QTextHtmlImporter::tables

private

Definition at line 205 of file qtextdocumentfragment_p.h.

Referenced by closeTag(), processBlockNode(), and processSpecialNodes().

wsm

QTextHtmlParserNode::WhiteSpaceMode QTextHtmlImporter::wsm

private

Definition at line 224 of file qtextdocumentfragment_p.h.

Referenced by appendBlock(), appendNodeText(), import(), processBlockNode(), and QTextHtmlImporter().

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The documentation for this class was generated from the following files:

• /src/gui/text/qtextdocumentfragment_p.h
• /src/gui/text/qtextdocumentfragment.cpp