source: trunk/src/qt3support/text/q3richtext_p.cpp@ 494

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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());
}