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****************************************************************************/

#include "q3richtext_p.h"

#ifndef QT_NO_RICHTEXT

QT_BEGIN_NAMESPACE

Q3TextCommand::~Q3TextCommand() {}

Q3TextCommand::Commands Q3TextCommand::type() const { return Invalid; }

#ifndef QT_NO_TEXTCUSTOMITEM

Q3TextCustomItem::~Q3TextCustomItem() {}

void Q3TextCustomItem::adjustToPainter(QPainter* p){ if (p) width = 0; }

Q3TextCustomItem::Placement Q3TextCustomItem::placement() const { return PlaceInline; }

bool Q3TextCustomItem::ownLine() const { return false; }

void Q3TextCustomItem::resize(int nwidth){ width = nwidth; }

void Q3TextCustomItem::invalidate() {}

bool Q3TextCustomItem::isNested() const { return false; }

int Q3TextCustomItem::minimumWidth() const { return 0; }

QString Q3TextCustomItem::richText() const { return QString(); }

bool Q3TextCustomItem::enter(Q3TextCursor *, Q3TextDocument*&, Q3TextParagraph *&, int &, int &, int &, bool)

{

    return true;

}

bool Q3TextCustomItem::enterAt(Q3TextCursor *, Q3TextDocument *&, Q3TextParagraph *&, int &, int &, int &, const QPoint &)

{

    return true;

}

bool Q3TextCustomItem::next(Q3TextCursor *, Q3TextDocument *&, Q3TextParagraph *&, int &, int &, int &)

{

    return true;

}

bool Q3TextCustomItem::prev(Q3TextCursor *, Q3TextDocument *&, Q3TextParagraph *&, int &, int &, int &)

{

    return true;

}

bool Q3TextCustomItem::down(Q3TextCursor *, Q3TextDocument *&, Q3TextParagraph *&, int &, int &, int &)

{

    return true;

}

bool Q3TextCustomItem::up(Q3TextCursor *, Q3TextDocument *&, Q3TextParagraph *&, int &, int &, int &)

{

    return true;

}

#endif // QT_NO_TEXTCUSTOMITEM

void Q3TextFlow::setPageSize(int ps) { pagesize = ps; }

#ifndef QT_NO_TEXTCUSTOMITEM

bool Q3TextFlow::isEmpty() { return leftItems.isEmpty() && rightItems.isEmpty(); }

#else

bool Q3TextFlow::isEmpty() { return true; }

#endif

#ifndef QT_NO_TEXTCUSTOMITEM

void Q3TextTableCell::invalidate() { cached_width = -1; cached_sizehint = -1; }

void Q3TextTable::invalidate() { cachewidth = -1; }

#endif

Q3TextParagraphData::~Q3TextParagraphData() {}

void Q3TextParagraphData::join(Q3TextParagraphData *) {}

Q3TextFormatter::~Q3TextFormatter() {}

void Q3TextFormatter::setWrapEnabled(bool b) { wrapEnabled = b; }

void Q3TextFormatter::setWrapAtColumn(int c) { wrapColumn = c; }

int Q3TextCursor::x() const

{

    if (idx >= para->length())

        return 0;

    Q3TextStringChar *c = para->at(idx);

    int curx = c->x;

    if (!c->rightToLeft &&

         c->c.isSpace() &&

         idx > 0 &&

         para->at(idx - 1)->c != QLatin1Char('\t') &&

         !c->lineStart &&

         (para->alignment() & Qt::AlignJustify) == Qt::AlignJustify)

        curx = para->at(idx - 1)->x + para->string()->width(idx - 1);

    if (c->rightToLeft)

        curx += para->string()->width(idx);

    return curx;

}

int Q3TextCursor::y() const

{

    int dummy, line;

    para->lineStartOfChar(idx, &dummy, &line);

    return para->lineY(line);

}

int Q3TextCursor::globalX() const { return totalOffsetX() + para->rect().x() + x(); }

int Q3TextCursor::globalY() const { return totalOffsetY() + para->rect().y() + y(); }

Q3TextDocument *Q3TextCursor::document() const

{

    return para ? para->document() : 0;

}

void Q3TextCursor::gotoPosition(Q3TextParagraph* p, int index)

{

    if (para && p != para) {

        while (!indices.isEmpty() && para->document() != p->document())

            pop();

        Q_ASSERT(indices.isEmpty() || para->document() == p->document());

    }

    para = p;

    if (index < 0 || index >= para->length()) {

        qWarning("Q3TextCursor::gotoParagraph Index: %d out of range", index);

        if (index < 0 || para->length() == 0)

            index = 0;

        else

            index = para->length() - 1;

    }

    tmpX = -1;

    idx = index;

    fixCursorPosition();

}

bool Q3TextDocument::hasSelection(int id, bool visible) const

{

    return (selections.find(id) != selections.end() &&

             (!visible ||

               ((Q3TextDocument*)this)->selectionStartCursor(id) !=

               ((Q3TextDocument*)this)->selectionEndCursor(id)));

}

void Q3TextDocument::setSelectionStart(int id, const Q3TextCursor &cursor)

{

    Q3TextDocumentSelection sel;

    sel.startCursor = cursor;

    sel.endCursor = cursor;

    sel.swapped = false;

    selections[id] = sel;

}

Q3TextParagraph *Q3TextDocument::paragAt(int i) const

{

    Q3TextParagraph* p = curParag;

    if (!p || p->paragId() > i)

        p = fParag;

    while (p && p->paragId() != i)

        p = p->next();

    ((Q3TextDocument*)this)->curParag = p;

    return p;

}

Q3TextFormat::~Q3TextFormat()

{

}

Q3TextFormat::Q3TextFormat()

    : fm(QFontMetrics(fn)), linkColor(true), logicalFontSize(3), stdSize(qApp->font().pointSize())

{

    ref = 0;

    usePixelSizes = false;

    if (stdSize == -1) {

        stdSize = qApp->font().pixelSize();

        usePixelSizes = true;

    }

    missp = false;

    ha = AlignNormal;

    collection = 0;

}

Q3TextFormat::Q3TextFormat(const Q3StyleSheetItem *style)

    : fm(QFontMetrics(fn)), linkColor(true), logicalFontSize(3), stdSize(qApp->font().pointSize())

{

    ref = 0;

    usePixelSizes = false;

    if (stdSize == -1) {

        stdSize = qApp->font().pixelSize();

        usePixelSizes = true;

    }

    missp = false;

    ha = AlignNormal;

    collection = 0;

    fn = QFont(style->fontFamily(),

                style->fontSize(),

                style->fontWeight(),

                style->fontItalic());

    fn.setUnderline(style->fontUnderline());

    fn.setStrikeOut(style->fontStrikeOut());

    col = style->color();

    fm = QFontMetrics(fn);

    leftBearing = fm.minLeftBearing();

    rightBearing = fm.minRightBearing();

    hei = fm.lineSpacing();

    asc = fm.ascent() + (fm.leading()+1)/2;

    dsc = fm.descent();

    missp = false;

    ha = AlignNormal;

    memset(widths, 0, 256);

    generateKey();

    addRef();

}

Q3TextFormat::Q3TextFormat(const QFont &f, const QColor &c, Q3TextFormatCollection *parent)

    : fn(f), col(c), fm(QFontMetrics(f)), linkColor(true),

      logicalFontSize(3), stdSize(f.pointSize())

{

    ref = 0;

    usePixelSizes = false;

    if (stdSize == -1) {

        stdSize = f.pixelSize();

        usePixelSizes = true;

    }

    collection = parent;

    leftBearing = fm.minLeftBearing();

    rightBearing = fm.minRightBearing();

    hei = fm.lineSpacing();

    asc = fm.ascent() + (fm.leading()+1)/2;

    dsc = fm.descent();

    missp = false;

    ha = AlignNormal;

    memset(widths, 0, 256);

    generateKey();

    addRef();

}

Q3TextFormat::Q3TextFormat(const Q3TextFormat &f)

    : fm(f.fm)

{

    ref = 0;

    collection = 0;

    fn = f.fn;

    col = f.col;

    leftBearing = f.leftBearing;

    rightBearing = f.rightBearing;

    memset(widths, 0, 256);

    hei = f.hei;

    asc = f.asc;

    dsc = f.dsc;

    stdSize = f.stdSize;

    usePixelSizes = f.usePixelSizes;

    logicalFontSize = f.logicalFontSize;

    missp = f.missp;

    ha = f.ha;

    k = f.k;

    linkColor = f.linkColor;

    addRef();

}

Q3TextFormat& Q3TextFormat::operator=(const Q3TextFormat &f)

{

    ref = 0;

    collection = f.collection;

    fn = f.fn;

    col = f.col;

    fm = f.fm;

    leftBearing = f.leftBearing;

    rightBearing = f.rightBearing;

    memset(widths, 0, 256);

    hei = f.hei;

    asc = f.asc;

    dsc = f.dsc;

    stdSize = f.stdSize;

    usePixelSizes = f.usePixelSizes;

    logicalFontSize = f.logicalFontSize;

    missp = f.missp;

    ha = f.ha;

    k = f.k;

    linkColor = f.linkColor;

    addRef();

    return *this;

}

void Q3TextFormat::update()

{

    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();