QTextCopyHelper Class Reference

#include <qtextdocumentfragment_p.h>

Public Functions
void	copy ()
	QTextCopyHelper (const QTextCursor &_source, const QTextCursor &_destination, bool forceCharFormat=false, const QTextCharFormat &fmt=QTextCharFormat())

Private Functions
int	appendFragment (int pos, int endPos, int objectIndex=-1)
void	appendFragments (int pos, int endPos)
QTextFormat	convertFormat (const QTextFormat &fmt)
int	convertFormatIndex (const QTextFormat &oldFormat, int objectIndexToSet=-1)
int	convertFormatIndex (int oldFormatIndex, int objectIndexToSet=-1)

Properties
QTextCursor	cursor
QTextDocumentPrivate *	dst
bool	forceCharFormat
QTextFormatCollection &	formatCollection
int	insertPos
QMap< int, int >	objectIndexMap
const QString	originalText
int	primaryCharFormatIndex
QTextDocumentPrivate *	src

Detailed Description

Definition at line 71 of file qtextdocumentfragment_p.h.

Constructors and Destructors

QTextCopyHelper()

QTextCopyHelper::QTextCopyHelper	(	const QTextCursor &	_source,
		const QTextCursor &	_destination,
		bool	forceCharFormat = false,
		const QTextCharFormat &	fmt = QTextCharFormat()
	)

Definition at line 55 of file qtextdocumentfragment.cpp.

    : formatCollection(*_destination.d->priv->formatCollection()), originalText((const QString)_source.d->priv->buffer())
#else
    : formatCollection(*_destination.d->priv->formatCollection()), originalText(_source.d->priv->buffer())
#endif
{
    src = _source.d->priv;
    dst = _destination.d->priv;
    insertPos = _destination.position();
    this->forceCharFormat = forceCharFormat;
    primaryCharFormatIndex = convertFormatIndex(fmt);
    cursor = _source;
}

Functions

appendFragment()

int QTextCopyHelper::appendFragment ( int  pos, int  endPos, int  objectIndex = -1  )

private

Definition at line 90 of file qtextdocumentfragment.cpp.

Referenced by appendFragments(), and copy().

{
    QTextDocumentPrivate::FragmentIterator fragIt = src->find(pos);
    const QTextFragmentData * const frag = fragIt.value();

    Q_ASSERT(objectIndex == -1
             || (frag->size_array[0] == 1 && src->formatCollection()->format(frag->format).objectIndex() != -1));

    int charFormatIndex;
    if (forceCharFormat)
       charFormatIndex = primaryCharFormatIndex;
    else
       charFormatIndex = convertFormatIndex(frag->format, objectIndex);

    const int inFragmentOffset = qMax(0, pos - fragIt.position());
    int charsToCopy = qMin(int(frag->size_array[0] - inFragmentOffset), endPos - pos);

    QTextBlock nextBlock = src->blocksFind(pos + 1);

    int blockIdx = -2;
    if (nextBlock.position() == pos + 1) {
        blockIdx = convertFormatIndex(nextBlock.blockFormat());
    } else if (pos == 0 && insertPos == 0) {
        dst->setBlockFormat(dst->blocksBegin(), dst->blocksBegin(), convertFormat(src->blocksBegin().blockFormat()).toBlockFormat());
        dst->setCharFormat(-1, 1, convertFormat(src->blocksBegin().charFormat()).toCharFormat());
    }

    QString txtToInsert(originalText.constData() + frag->stringPosition + inFragmentOffset, charsToCopy);
    if (txtToInsert.length() == 1
        && (txtToInsert.at(0) == QChar::ParagraphSeparator
            || txtToInsert.at(0) == QTextBeginningOfFrame
            || txtToInsert.at(0) == QTextEndOfFrame
           )
       ) {
        dst->insertBlock(txtToInsert.at(0), insertPos, blockIdx, charFormatIndex);
        ++insertPos;
    } else {
        if (nextBlock.textList()) {
            QTextBlock dstBlock = dst->blocksFind(insertPos);
            if (!dstBlock.textList()) {
                // insert a new text block with the block and char format from the
                // source block to make sure that the following text fragments
                // end up in a list as they should
                int listBlockFormatIndex = convertFormatIndex(nextBlock.blockFormat());
                int listCharFormatIndex = convertFormatIndex(nextBlock.charFormat());
                dst->insertBlock(insertPos, listBlockFormatIndex, listCharFormatIndex);
                ++insertPos;
            }
        }
        dst->insert(insertPos, txtToInsert, charFormatIndex);
        const int userState = nextBlock.userState();
        if (userState != -1)
            dst->blocksFind(insertPos).setUserState(userState);
        insertPos += txtToInsert.length();
    }

    return charsToCopy;
}

appendFragments()

void QTextCopyHelper::appendFragments ( int  pos, int  endPos  )

private

Definition at line 149 of file qtextdocumentfragment.cpp.

Referenced by copy().

{
    Q_ASSERT(pos < endPos);

    while (pos < endPos)
        pos += appendFragment(pos, endPos);
}

convertFormat()

QTextFormat QTextCopyHelper::convertFormat ( const QTextFormat &  fmt )

inlineprivate

Definition at line 84 of file qtextdocumentfragment_p.h.

Referenced by appendFragment().

    { return dst->formatCollection()->format(convertFormatIndex(fmt)); }

convertFormatIndex() [1/2]

int QTextCopyHelper::convertFormatIndex ( const QTextFormat &  oldFormat, int  objectIndexToSet = -1  )

private

Definition at line 70 of file qtextdocumentfragment.cpp.

Referenced by appendFragment(), convertFormat(), convertFormatIndex(), and copy().

{
    QTextFormat fmt = oldFormat;
    if (objectIndexToSet != -1) {
        fmt.setObjectIndex(objectIndexToSet);
    } else if (fmt.objectIndex() != -1) {
        int newObjectIndex = objectIndexMap.value(fmt.objectIndex(), -1);
        if (newObjectIndex == -1) {
            QTextFormat objFormat = src->formatCollection()->objectFormat(fmt.objectIndex());
            Q_ASSERT(objFormat.objectIndex() == -1);
            newObjectIndex = formatCollection.createObjectIndex(objFormat);
            objectIndexMap.insert(fmt.objectIndex(), newObjectIndex);
        }
        fmt.setObjectIndex(newObjectIndex);
    }
    int idx = formatCollection.indexForFormat(fmt);
    Q_ASSERT(formatCollection.format(idx).type() == oldFormat.type());
    return idx;
}

convertFormatIndex() [2/2]

int QTextCopyHelper::convertFormatIndex ( int  oldFormatIndex, int  objectIndexToSet = -1  )

inlineprivate

Definition at line 82 of file qtextdocumentfragment_p.h.

    { return convertFormatIndex(src->formatCollection()->format(oldFormatIndex), objectIndexToSet); }

copy()

void QTextCopyHelper::copy

(

)

Definition at line 157 of file qtextdocumentfragment.cpp.

Referenced by QTextDocumentFragmentPrivate::QTextDocumentFragmentPrivate().

{
    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());
    }
}

Properties

cursor

QTextCursor QTextCopyHelper::cursor

private

Definition at line 92 of file qtextdocumentfragment_p.h.

Referenced by copy(), and QTextDocumentFragmentPrivate::~QTextDocumentFragmentPrivate().

dst

QTextDocumentPrivate* QTextCopyHelper::dst

private

Definition at line 93 of file qtextdocumentfragment_p.h.

Referenced by appendFragment(), convertFormat(), and copy().

forceCharFormat

bool QTextCopyHelper::forceCharFormat

private

Definition at line 89 of file qtextdocumentfragment_p.h.

formatCollection

QTextFormatCollection& QTextCopyHelper::formatCollection

private

Definition at line 95 of file qtextdocumentfragment_p.h.

Referenced by convertFormatIndex().

insertPos

int QTextCopyHelper::insertPos

private

Definition at line 87 of file qtextdocumentfragment_p.h.

Referenced by appendFragment(), and copy().

objectIndexMap

QMap<int, int> QTextCopyHelper::objectIndexMap

private

Definition at line 97 of file qtextdocumentfragment_p.h.

Referenced by convertFormatIndex().

originalText

const QString QTextCopyHelper::originalText

private

Definition at line 96 of file qtextdocumentfragment_p.h.

Referenced by appendFragment().

primaryCharFormatIndex

int QTextCopyHelper::primaryCharFormatIndex

private

Definition at line 90 of file qtextdocumentfragment_p.h.

Referenced by appendFragment().

src

QTextDocumentPrivate* QTextCopyHelper::src

private

Definition at line 94 of file qtextdocumentfragment_p.h.

Referenced by appendFragment(), convertFormatIndex(), and copy().

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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