q3richtext_p.cpp

奇趣公司比较新的qt/emd版本

{
    fm = QFontMetrics(fn);
    leftBearing = fm.minLeftBearing();
    rightBearing = fm.minRightBearing();
    hei = fm.lineSpacing();
    asc = fm.ascent() + (fm.leading()+1)/2;
    dsc = fm.descent();
    memset(widths, 0, 256);
    generateKey();
}


QPainter* Q3TextFormat::pntr = 0;
QFontMetrics* Q3TextFormat::pntr_fm = 0;
int Q3TextFormat::pntr_ldg=-1;
int Q3TextFormat::pntr_asc=-1;
int Q3TextFormat::pntr_hei=-1;
int Q3TextFormat::pntr_dsc=-1;

void Q3TextFormat::setPainter(QPainter *p)
{
    pntr = p;
}

QPainter*  Q3TextFormat::painter()
{
    return pntr;
}

void Q3TextFormat::applyFont(const QFont &f)
{
    QFontMetrics fm(pntr->fontMetrics());
    if (!pntr_fm || pntr->font() != f) {
        pntr->setFont(f);
        delete pntr_fm;
        pntr_fm = new QFontMetrics(pntr->fontMetrics());
        pntr_ldg = pntr_fm->leading();
        pntr_asc = pntr_fm->ascent()+(pntr_ldg+1)/2;
        pntr_hei = pntr_fm->lineSpacing();
        pntr_dsc = -1;
    }
}

int Q3TextFormat::minLeftBearing() const
{
    if (!pntr || !pntr->isActive())
        return leftBearing;
    applyFont(fn);
    return pntr_fm->minLeftBearing();
}

int Q3TextFormat::minRightBearing() const
{
    if (!pntr || !pntr->isActive())
        return rightBearing;
    applyFont(fn);
    return pntr_fm->minRightBearing();
}

int Q3TextFormat::height() const
{
    if (!pntr || !pntr->isActive())
        return hei;
    applyFont(fn);
    return pntr_hei;
}

int Q3TextFormat::ascent() const
{
    if (!pntr || !pntr->isActive())
        return asc;
    applyFont(fn);
    return pntr_asc;
}

int Q3TextFormat::descent() const
{
    if (!pntr || !pntr->isActive())
        return dsc;
    applyFont(fn);
    if (pntr_dsc < 0)
        pntr_dsc = pntr_fm->descent();
    return pntr_dsc;
}

int Q3TextFormat::leading() const
{
    if (!pntr || !pntr->isActive())
        return fm.leading();
    applyFont(fn);
    return pntr_ldg;
}

void Q3TextFormat::generateKey()
{
    k = getKey(fn, col, isMisspelled(), vAlign());
}

QString Q3TextFormat::getKey(const QFont &fn, const QColor &col, bool misspelled, VerticalAlignment a)
{
    QString k = fn.key();
    k += QLatin1Char('/');
    k += QString::number((uint)col.rgb());
    k += QLatin1Char('/');
    k += QString::number((int)misspelled);
    k += QLatin1Char('/');
    k += QString::number((int)a);
    return k;
}

QString Q3TextString::toString(const QVector<Q3TextStringChar> &data)
{
    QString s;
    int l = data.size();
    s.setUnicode(0, l);
    const Q3TextStringChar *c = data.data();
    QChar *uc = (QChar *)s.unicode();
    while (l--)
        *(uc++) = (c++)->c;

    return s;
}

void Q3TextParagraph::setSelection(int id, int start, int end)
{
    QMap<int, Q3TextParagraphSelection>::ConstIterator it = selections().constFind(id);
    if (it != mSelections->constEnd()) {
        if (start == (*it).start && end == (*it).end)
            return;
    }

    Q3TextParagraphSelection sel;
    sel.start = start;
    sel.end = end;
    (*mSelections)[id] = sel;
    setChanged(true, true);
}

void Q3TextParagraph::removeSelection(int id)
{
    if (!hasSelection(id))
        return;
    if (mSelections)
        mSelections->remove(id);
    setChanged(true, true);
}

int Q3TextParagraph::selectionStart(int id) const
{
    if (!mSelections)
        return -1;
    QMap<int, Q3TextParagraphSelection>::ConstIterator it = mSelections->constFind(id);
    if (it == mSelections->constEnd())
        return -1;
    return (*it).start;
}

int Q3TextParagraph::selectionEnd(int id) const
{
    if (!mSelections)
        return -1;
    QMap<int, Q3TextParagraphSelection>::ConstIterator it = mSelections->constFind(id);
    if (it == mSelections->constEnd())
        return -1;
    return (*it).end;
}

bool Q3TextParagraph::hasSelection(int id) const
{
    return mSelections ? mSelections->contains(id) : false;
}

bool Q3TextParagraph::fullSelected(int id) const
{
    if (!mSelections)
        return false;
    QMap<int, Q3TextParagraphSelection>::ConstIterator it = mSelections->constFind(id);
    if (it == mSelections->constEnd())
        return false;
    return (*it).start == 0 && (*it).end == str->length() - 1;
}

int Q3TextParagraph::lineY(int l) const
{
    if (l > (int)lineStarts.count() - 1) {
        qWarning("Q3TextParagraph::lineY: line %d out of range!", l);
        return 0;
    }

    if (!isValid())
        ((Q3TextParagraph*)this)->format();

    QMap<int, QTextLineStart*>::ConstIterator it = lineStarts.begin();
    while (l-- > 0)
        ++it;
    return (*it)->y;
}

int Q3TextParagraph::lineBaseLine(int l) const
{
    if (l > (int)lineStarts.count() - 1) {
        qWarning("Q3TextParagraph::lineBaseLine: line %d out of range!", l);
        return 10;
    }

    if (!isValid())
        ((Q3TextParagraph*)this)->format();

    QMap<int, QTextLineStart*>::ConstIterator it = lineStarts.begin();
    while (l-- > 0)
        ++it;
    return (*it)->baseLine;
}

int Q3TextParagraph::lineHeight(int l) const
{
    if (l > (int)lineStarts.count() - 1) {
        qWarning("Q3TextParagraph::lineHeight: line %d out of range!", l);
        return 15;
    }

    if (!isValid())
        ((Q3TextParagraph*)this)->format();

    QMap<int, QTextLineStart*>::ConstIterator it = lineStarts.begin();
    while (l-- > 0)
        ++it;
    return (*it)->h;
}

void Q3TextParagraph::lineInfo(int l, int &y, int &h, int &bl) const
{
    if (l > (int)lineStarts.count() - 1) {
        qWarning("Q3TextParagraph::lineInfo: line %d out of range!", l);
        qDebug("%d %d", (int)lineStarts.count() - 1, l);
        y = 0;
        h = 15;
        bl = 10;
        return;
    }

    if (!isValid())
        ((Q3TextParagraph*)this)->format();

    QMap<int, QTextLineStart*>::ConstIterator it = lineStarts.begin();
    while (l-- > 0)
        ++it;
    y = (*it)->y;
    h = (*it)->h;
    bl = (*it)->baseLine;
}


void Q3TextParagraph::setAlignment(int a)
{
    if (a == (int)align)
        return;
    align = a;
    invalidate(0);
}

Q3TextFormatter *Q3TextParagraph::formatter() const
{
    if (hasdoc)
        return document()->formatter();
    if (pseudoDocument()->pFormatter)
        return pseudoDocument()->pFormatter;
    return (((Q3TextParagraph*)this)->pseudoDocument()->pFormatter = new Q3TextFormatterBreakWords);
}

void Q3TextParagraph::setTabArray(int *a)
{
    delete [] tArray;
    tArray = a;
}

void Q3TextParagraph::setTabStops(int tw)
{
    if (hasdoc)
        document()->setTabStops(tw);
    else
        tabStopWidth = tw;
}

QMap<int, Q3TextParagraphSelection> &Q3TextParagraph::selections() const
{
    if (!mSelections)
        ((Q3TextParagraph *)this)->mSelections = new QMap<int, Q3TextParagraphSelection>;
    return *mSelections;
}

#ifndef QT_NO_TEXTCUSTOMITEM
QList<Q3TextCustomItem *> &Q3TextParagraph::floatingItems() const
{
    if (!mFloatingItems)
        ((Q3TextParagraph *)this)->mFloatingItems = new QList<Q3TextCustomItem *>;
    return *mFloatingItems;
}
#endif

Q3TextStringChar::~Q3TextStringChar()
{
    if (format())
        format()->removeRef();
    if (type) // not Regular
        delete p.custom;
}

Q3TextParagraphPseudoDocument::Q3TextParagraphPseudoDocument():pFormatter(0),commandHistory(0), minw(0),wused(0),collection(){}
Q3TextParagraphPseudoDocument::~Q3TextParagraphPseudoDocument(){ delete pFormatter; delete commandHistory; }


#endif //QT_NO_RICHTEXT