qlcdnumber.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qlcdnumber.h"
 
#include "qbitarray.h"
#include "qpainter.h"
#include "private/qframe_p.h"
 
QT_BEGIN_NAMESPACE
 
class QLCDNumberPrivate : public QFramePrivate
{
    Q_DECLARE_PUBLIC(QLCDNumber)
public:
    void init();
    void internalSetString(const QString& s);
    void drawString(const QString& s, QPainter &, QBitArray * = nullptr, bool = true);
    //void drawString(const QString &, QPainter &, QBitArray * = nullptr) const;
    void drawDigit(const QPoint &, QPainter &, int, char, char = ' ');
    void drawSegment(const QPoint &, char, QPainter &, int, bool = false);
 
    int ndigits;
    double val;
    uint base : 2;
    uint smallPoint : 1;
    uint fill : 1;
    uint shadow : 1;
    QString digitStr;
    QBitArray points;
};
 
static QString int2string(int num, int base, int ndigits, bool *oflow)
{
    QString s;
    bool negative;
    if (num < 0) {
        negative = true;
        num      = -num;
    } else {
        negative = false;
    }
    switch(base) {
        case QLCDNumber::Hex:
            s = QString::asprintf("%*x", ndigits, num);
            break;
        case QLCDNumber::Dec:
            s = QString::asprintf("%*i", ndigits, num);
            break;
        case QLCDNumber::Oct:
            s = QString::asprintf("%*o", ndigits, num);
            break;
        case QLCDNumber::Bin:
            {
                char buf[42];
                char *p = &buf[41];
                uint n = num;
                int len = 0;
                *p = '\0';
                do {
                    *--p = (char)((n&1)+'0');
                    n >>= 1;
                    len++;
                } while (n != 0);
                len = ndigits - len;
                if (len > 0)
                    s += QString(len, u' ');
                s += QLatin1StringView(p);
            }
            break;
    }
    if (negative) {
        for (int i=0; i<(int)s.size(); i++) {
            if (s[i] != u' ') {
                if (i != 0) {
                    s[i-1] = u'-';
                } else {
                    s.insert(0, u'-');
                }
                break;
            }
        }
    }
    if (oflow)
        *oflow = (int)s.size() > ndigits;
    return s;
}
 
 
static QString double2string(double num, int base, int ndigits, bool *oflow)
{
    QString s;
    if (base != QLCDNumber::Dec) {
        bool of = num >= 2147483648.0 || num < -2147483648.0;
        if (of) {                             // oops, integer overflow
            if (oflow)
                *oflow = true;
            return s;
        }
        s = int2string((int)num, base, ndigits, nullptr);
    } else {                                    // decimal base
        int nd = ndigits;
        do {
            s = QString::asprintf("%*.*g", ndigits, nd, num);
            qsizetype i = s.indexOf(u'e');
            if (i > 0 && s[i+1]==u'+') {
                s[i] = u' ';
                s[i+1] = u'e';
            }
        } while (nd-- && (int)s.size() > ndigits);
    }
    if (oflow)
        *oflow = (int)s.size() > ndigits;
    return s;
}
 
 
static const char *getSegments(char ch)               // gets list of segments for ch
{
    static const char segments[30][8] =
       { { 0, 1, 2, 4, 5, 6,99, 0},             // 0    0 / O
         { 2, 5,99, 0, 0, 0, 0, 0},             // 1    1
         { 0, 2, 3, 4, 6,99, 0, 0},             // 2    2
         { 0, 2, 3, 5, 6,99, 0, 0},             // 3    3
         { 1, 2, 3, 5,99, 0, 0, 0},             // 4    4
         { 0, 1, 3, 5, 6,99, 0, 0},             // 5    5 / S
         { 0, 1, 3, 4, 5, 6,99, 0},             // 6    6
         { 0, 2, 5,99, 0, 0, 0, 0},             // 7    7
         { 0, 1, 2, 3, 4, 5, 6,99},             // 8    8
         { 0, 1, 2, 3, 5, 6,99, 0},             // 9    9 / g
         { 3,99, 0, 0, 0, 0, 0, 0},             // 10   -
         { 7,99, 0, 0, 0, 0, 0, 0},             // 11   .
         { 0, 1, 2, 3, 4, 5,99, 0},             // 12   A
         { 1, 3, 4, 5, 6,99, 0, 0},             // 13   B
         { 0, 1, 4, 6,99, 0, 0, 0},             // 14   C
         { 2, 3, 4, 5, 6,99, 0, 0},             // 15   D
         { 0, 1, 3, 4, 6,99, 0, 0},             // 16   E
         { 0, 1, 3, 4,99, 0, 0, 0},             // 17   F
         { 1, 3, 4, 5,99, 0, 0, 0},             // 18   h
         { 1, 2, 3, 4, 5,99, 0, 0},             // 19   H
         { 1, 4, 6,99, 0, 0, 0, 0},             // 20   L
         { 3, 4, 5, 6,99, 0, 0, 0},             // 21   o
         { 0, 1, 2, 3, 4,99, 0, 0},             // 22   P
         { 3, 4,99, 0, 0, 0, 0, 0},             // 23   r
         { 4, 5, 6,99, 0, 0, 0, 0},             // 24   u
         { 1, 2, 4, 5, 6,99, 0, 0},             // 25   U
         { 1, 2, 3, 5, 6,99, 0, 0},             // 26   Y
         { 8, 9,99, 0, 0, 0, 0, 0},             // 27   :
         { 0, 1, 2, 3,99, 0, 0, 0},             // 28   '
         {99, 0, 0, 0, 0, 0, 0, 0} };           // 29   empty
 
    if (ch >= '0' && ch <= '9')
        return segments[ch - '0'];
    if (ch >= 'A' && ch <= 'F')
        return segments[ch - 'A' + 12];
    if (ch >= 'a' && ch <= 'f')
        return segments[ch - 'a' + 12];
 
    int n;
    switch (ch) {
        case '-':
            n = 10;  break;
        case 'O':
            n = 0;   break;
        case 'g':
            n = 9;   break;
        case '.':
            n = 11;  break;
        case 'h':
            n = 18;  break;
        case 'H':
            n = 19;  break;
        case 'l':
        case 'L':
            n = 20;  break;
        case 'o':
            n = 21;  break;
        case 'p':
        case 'P':
            n = 22;  break;
        case 'r':
        case 'R':
            n = 23;  break;
        case 's':
        case 'S':
            n = 5;   break;
        case 'u':
            n = 24;  break;
        case 'U':
            n = 25;  break;
        case 'y':
        case 'Y':
            n = 26;  break;
        case ':':
            n = 27;  break;
        case '\'':
            n = 28;  break;
        default:
            n = 29;  break;
    }
    return segments[n];
}
 
 
 
QLCDNumber::QLCDNumber(QWidget *parent)
    : QLCDNumber(5, parent)
{
}
 
 
QLCDNumber::QLCDNumber(uint numDigits, QWidget *parent)
        : QFrame(*new QLCDNumberPrivate, parent)
{
    Q_D(QLCDNumber);
    d->ndigits = numDigits;
    d->init();
}
 
void QLCDNumberPrivate::init()
{
    Q_Q(QLCDNumber);
 
    q->setFrameStyle(QFrame::Box | QFrame::Raised);
    val        = 0;
    base       = QLCDNumber::Dec;
    smallPoint = false;
    q->setDigitCount(ndigits);
    q->setSegmentStyle(QLCDNumber::Filled);
    q->setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum));
}
 
QLCDNumber::~QLCDNumber()
{
}
 
 
void QLCDNumber::setDigitCount(int numDigits)
{
    Q_D(QLCDNumber);
    if (Q_UNLIKELY(numDigits > 99)) {
        qWarning("QLCDNumber::setNumDigits: (%s) Max 99 digits allowed",
                 objectName().toLocal8Bit().constData());
        numDigits = 99;
    }
    if (Q_UNLIKELY(numDigits < 0)) {
        qWarning("QLCDNumber::setNumDigits: (%s) Min 0 digits allowed",
                 objectName().toLocal8Bit().constData());
        numDigits = 0;
    }
    if (d->digitStr.isNull()) {                  // from constructor
        d->ndigits = numDigits;
        d->digitStr.fill(u' ', d->ndigits);
        d->points.fill(0, d->ndigits);
        d->digitStr[d->ndigits - 1] = u'0'; // "0" is the default number
    } else {
        bool doDisplay = d->ndigits == 0;
        if (numDigits == d->ndigits)             // no change
            return;
        int i;
        int dif;
        if (numDigits > d->ndigits) {            // expand
            dif = numDigits - d->ndigits;
            QString buf;
            buf.fill(u' ', dif);
            d->digitStr.insert(0, buf);
            d->points.resize(numDigits);
            for (i=numDigits-1; i>=dif; i--)
                d->points.setBit(i, d->points.testBit(i-dif));
            for (i=0; i<dif; i++)
                d->points.clearBit(i);
        } else {                                        // shrink
            dif = d->ndigits - numDigits;
            d->digitStr = d->digitStr.right(numDigits);
            QBitArray tmpPoints = d->points;
            d->points.resize(numDigits);
            for (i=0; i<numDigits; i++)
                d->points.setBit(i, tmpPoints.testBit(i+dif));
        }
        d->ndigits = numDigits;
        if (doDisplay)
            display(value());
        update();
    }
}
 
int QLCDNumber::digitCount() const
{
    Q_D(const QLCDNumber);
    return d->ndigits;
}
 
bool QLCDNumber::checkOverflow(int num) const
{
    Q_D(const QLCDNumber);
    bool of;
    int2string(num, d->base, d->ndigits, &of);
    return of;
}
 
 
bool QLCDNumber::checkOverflow(double num) const
{
    Q_D(const QLCDNumber);
    bool of;
    double2string(num, d->base, d->ndigits, &of);
    return of;
}
 
 
QLCDNumber::Mode QLCDNumber::mode() const
{
    Q_D(const QLCDNumber);
    return (QLCDNumber::Mode) d->base;
}
 
void QLCDNumber::setMode(Mode m)
{
    Q_D(QLCDNumber);
    d->base = m;
    display(d->val);
}
 
 
double QLCDNumber::value() const
{
    Q_D(const QLCDNumber);
    return d->val;
}
 
void QLCDNumber::display(double num)
{
    Q_D(QLCDNumber);
    d->val = num;
    bool of;
    QString s = double2string(d->val, d->base, d->ndigits, &of);
    if (of)
        emit overflow();
    else
        d->internalSetString(s);
}
 
int QLCDNumber::intValue() const
{
    Q_D(const QLCDNumber);
    return qRound(d->val);
}
 
 
void QLCDNumber::display(int num)
{
    Q_D(QLCDNumber);
    d->val = (double)num;
    bool of;
    QString s = int2string(num, d->base, d->ndigits, &of);
    if (of)
        emit overflow();
    else
        d->internalSetString(s);
}
 
 
void QLCDNumber::display(const QString &s)
{
    Q_D(QLCDNumber);
    d->val = 0;
    bool ok = false;
    double v = s.toDouble(&ok);
    if (ok)
        d->val = v;
    d->internalSetString(s);
}
 
void QLCDNumber::setHexMode()
{
    setMode(Hex);
}
 
 
void QLCDNumber::setDecMode()
{
    setMode(Dec);
}
 
 
void QLCDNumber::setOctMode()
{
    setMode(Oct);
}
 
 
void QLCDNumber::setBinMode()
{
    setMode(Bin);
}
 
 
void QLCDNumber::setSmallDecimalPoint(bool b)
{
    Q_D(QLCDNumber);
    d->smallPoint = b;
    update();
}
 
bool QLCDNumber::smallDecimalPoint() const
{
    Q_D(const QLCDNumber);
    return d->smallPoint;
}
 
 
 
void QLCDNumber::paintEvent(QPaintEvent *)
{
    Q_D(QLCDNumber);
    QPainter p(this);
    drawFrame(&p);
    p.setRenderHint(QPainter::Antialiasing);
    if (d->shadow)
        p.translate(0.5, 0.5);
 
    if (d->smallPoint)
        d->drawString(d->digitStr, p, &d->points, false);
    else
        d->drawString(d->digitStr, p, nullptr, false);
}
 
 
void QLCDNumberPrivate::internalSetString(const QString& s)
{
    Q_Q(QLCDNumber);
    QString buffer(ndigits, QChar());
    int i;
    int len = s.size();
    QBitArray newPoints(ndigits);
 
    if (!smallPoint) {
        if (len == ndigits)
            buffer = s;
        else
            buffer = s.right(ndigits).rightJustified(ndigits, u' ');
    } else {
        int  index = -1;
        bool lastWasPoint = true;
        newPoints.clearBit(0);
        for (i=0; i<len; i++) {
            if (s[i] == u'.') {
                if (lastWasPoint) {           // point already set for digit?
                    if (index == ndigits - 1) // no more digits
                        break;
                    index++;
                    buffer[index] = u' ';        // 2 points in a row, add space
                }
                newPoints.setBit(index);        // set decimal point
                lastWasPoint = true;
            } else {
                if (index == ndigits - 1)
                    break;
                index++;
                buffer[index] = s[i];
                newPoints.clearBit(index);      // decimal point default off
                lastWasPoint = false;
            }
        }
        if (index < ((int) ndigits) - 1) {
            for(i=index; i>=0; i--) {
                buffer[ndigits - 1 - index + i] = buffer[i];
                newPoints.setBit(ndigits - 1 - index + i,
                                   newPoints.testBit(i));
            }
            for(i=0; i<ndigits-index-1; i++) {
                buffer[i] = u' ';
                newPoints.clearBit(i);
            }
        }
    }
 
    if (buffer == digitStr)
        return;
 
    digitStr = buffer;
    if (smallPoint)
        points = newPoints;
    q->update();
}
 
void QLCDNumberPrivate::drawString(const QString &s, QPainter &p,
                                   QBitArray *newPoints, bool newString)
{
    Q_Q(QLCDNumber);
    QPoint  pos;
 
    int digitSpace = smallPoint ? 2 : 1;
    int xSegLen    = q->width()*5/(ndigits*(5 + digitSpace) + digitSpace);
    int ySegLen    = q->height()*5/12;
    int segLen     = ySegLen > xSegLen ? xSegLen : ySegLen;
    int xAdvance   = segLen*(5 + digitSpace)/5;
    int xOffset    = (q->width() - ndigits*xAdvance + segLen/5)/2;
    int yOffset    = (q->height() - segLen*2)/2;
 
    for (int i=0;  i<ndigits; i++) {
        pos = QPoint(xOffset + xAdvance*i, yOffset);
        if (newString)
            drawDigit(pos, p, segLen, s[i].toLatin1(), digitStr[i].toLatin1());
        else
            drawDigit(pos, p, segLen, s[i].toLatin1());
        if (newPoints) {
            char newPoint = newPoints->testBit(i) ? '.' : ' ';
            if (newString) {
                char oldPoint = points.testBit(i) ? '.' : ' ';
                drawDigit(pos, p, segLen, newPoint, oldPoint);
            } else {
                drawDigit(pos, p, segLen, newPoint);
            }
        }
    }
    if (newString) {
        digitStr = s;
        digitStr.truncate(ndigits);
        if (newPoints)
            points = *newPoints;
    }
}
 
 
void QLCDNumberPrivate::drawDigit(const QPoint &pos, QPainter &p, int segLen,
                                  char newCh, char oldCh)
{
// Draws and/or erases segments to change display of a single digit
// from oldCh to newCh
 
    char updates[18][2];        // can hold 2 times number of segments, only
                                // first 9 used if segment table is correct
    int  nErases;
    int  nUpdates;
    const char *segs;
    int  i,j;
 
    const char erase      = 0;
    const char draw       = 1;
    const char leaveAlone = 2;
 
    segs = getSegments(oldCh);
    for (nErases=0; segs[nErases] != 99; nErases++) {
        updates[nErases][0] = erase;            // get segments to erase to
        updates[nErases][1] = segs[nErases];    // remove old char
    }
    nUpdates = nErases;
    segs = getSegments(newCh);
    for(i = 0 ; segs[i] != 99 ; i++) {
        for (j=0;  j<nErases; j++)
            if (segs[i] == updates[j][1]) {   // same segment ?
                updates[j][0] = leaveAlone;     // yes, already on screen
                break;
            }
        if (j == nErases) {                   // if not already on screen
            updates[nUpdates][0] = draw;
            updates[nUpdates][1] = segs[i];
            nUpdates++;
        }
    }
    for (i=0; i<nUpdates; i++) {
        if (updates[i][0] == draw)
            drawSegment(pos, updates[i][1], p, segLen);
        if (updates[i][0] == erase)
            drawSegment(pos, updates[i][1], p, segLen, true);
    }
}
 
 
static void addPoint(QPolygon &a, const QPoint &p)
{
    uint n = a.size();
    a.resize(n + 1);
    a.setPoint(n, p);
}
 
void QLCDNumberPrivate::drawSegment(const QPoint &pos, char segmentNo, QPainter &p,
                                    int segLen, bool erase)
{
    Q_Q(QLCDNumber);
    QPoint ppt;
    QPoint pt = pos;
    int width = segLen/5;
 
    const QPalette &pal = q->palette();
    QColor lightColor,darkColor,fgColor;
    if (erase){
        lightColor = pal.color(q->backgroundRole());
        darkColor  = lightColor;
        fgColor    = lightColor;
    } else {
        lightColor = pal.light().color();
        darkColor  = pal.dark().color();
        fgColor    = pal.color(q->foregroundRole());
    }
 
 
#define LINETO(X,Y) addPoint(a, QPoint(pt.x() + (X),pt.y() + (Y)))
#define LIGHT
#define DARK
 
    if (fill) {
        QPolygon a(0);
        //The following is an exact copy of the switch below.
        //don't make any changes here
        switch (segmentNo) {
        case 0 :
            ppt = pt;
            LIGHT;
            LINETO(segLen - 1,0);
            DARK;
            LINETO(segLen - width - 1,width);
            LINETO(width,width);
            LINETO(0,0);
            break;
        case 1 :
            pt += QPoint(0 , 1);
            ppt = pt;
            LIGHT;
            LINETO(width,width);
            DARK;
            LINETO(width,segLen - width/2 - 2);
            LINETO(0,segLen - 2);
            LIGHT;
            LINETO(0,0);
            break;
        case 2 :
            pt += QPoint(segLen - 1 , 1);
            ppt = pt;
            DARK;
            LINETO(0,segLen - 2);
            LINETO(-width,segLen - width/2 - 2);
            LIGHT;
            LINETO(-width,width);
            LINETO(0,0);
            break;
        case 3 :
            pt += QPoint(0 , segLen);
            ppt = pt;
            LIGHT;
            LINETO(width,-width/2);
            LINETO(segLen - width - 1,-width/2);
            LINETO(segLen - 1,0);
            DARK;
            if (width & 1) {            // adjust for integer division error
                LINETO(segLen - width - 3,width/2 + 1);
                LINETO(width + 2,width/2 + 1);
            } else {
                LINETO(segLen - width - 1,width/2);
                LINETO(width,width/2);
            }
            LINETO(0,0);
            break;
        case 4 :
            pt += QPoint(0 , segLen + 1);
            ppt = pt;
            LIGHT;
            LINETO(width,width/2);
            DARK;
            LINETO(width,segLen - width - 2);
            LINETO(0,segLen - 2);
            LIGHT;
            LINETO(0,0);
            break;
        case 5 :
            pt += QPoint(segLen - 1 , segLen + 1);
            ppt = pt;
            DARK;
            LINETO(0,segLen - 2);
            LINETO(-width,segLen - width - 2);
            LIGHT;
            LINETO(-width,width/2);
            LINETO(0,0);
            break;
        case 6 :
            pt += QPoint(0 , segLen*2);
            ppt = pt;
            LIGHT;
            LINETO(width,-width);
            LINETO(segLen - width - 1,-width);
            LINETO(segLen - 1,0);
            DARK;
            LINETO(0,0);
            break;
        case 7 :
            if (smallPoint)   // if smallpoint place'.' between other digits
                pt += QPoint(segLen + width/2 , segLen*2);
            else
                pt += QPoint(segLen/2 , segLen*2);
            ppt = pt;
            DARK;
            LINETO(width,0);
            LINETO(width,-width);
            LIGHT;
            LINETO(0,-width);
            LINETO(0,0);
            break;
        case 8 :
            pt += QPoint(segLen/2 - width/2 + 1 , segLen/2 + width);
            ppt = pt;
            DARK;
            LINETO(width,0);
            LINETO(width,-width);
            LIGHT;
            LINETO(0,-width);
            LINETO(0,0);
            break;
        case 9 :
            pt += QPoint(segLen/2 - width/2 + 1 , 3*segLen/2 + width);
            ppt = pt;
            DARK;
            LINETO(width,0);
            LINETO(width,-width);
            LIGHT;
            LINETO(0,-width);
            LINETO(0,0);
            break;
        default :
            qWarning("QLCDNumber::drawSegment: (%s) Illegal segment id: %d\n",
                     q->objectName().toLocal8Bit().constData(), segmentNo);
        }
        // End exact copy
        p.setPen(Qt::NoPen);
        p.setBrush(fgColor);
        p.drawPolygon(a);
        p.setBrush(Qt::NoBrush);
 
        pt = pos;
    }
#undef LINETO
#undef LIGHT
#undef DARK
 
#define LINETO(X,Y) p.drawLine(ppt.x(), ppt.y(), pt.x()+(X), pt.y()+(Y)); \
                    ppt = QPoint(pt.x()+(X), pt.y()+(Y))
#define LIGHT p.setPen(lightColor)
#define DARK  p.setPen(darkColor)
    if (shadow)
        switch (segmentNo) {
        case 0 :
            ppt = pt;
            LIGHT;
            LINETO(segLen - 1,0);
            DARK;
            LINETO(segLen - width - 1,width);
            LINETO(width,width);
            LINETO(0,0);
            break;
        case 1 :
            pt += QPoint(0,1);
            ppt = pt;
            LIGHT;
            LINETO(width,width);
            DARK;
            LINETO(width,segLen - width/2 - 2);
            LINETO(0,segLen - 2);
            LIGHT;
            LINETO(0,0);
            break;
        case 2 :
            pt += QPoint(segLen - 1 , 1);
            ppt = pt;
            DARK;
            LINETO(0,segLen - 2);
            LINETO(-width,segLen - width/2 - 2);
            LIGHT;
            LINETO(-width,width);
            LINETO(0,0);
            break;
        case 3 :
            pt += QPoint(0 , segLen);
            ppt = pt;
            LIGHT;
            LINETO(width,-width/2);
            LINETO(segLen - width - 1,-width/2);
            LINETO(segLen - 1,0);
            DARK;
            if (width & 1) {            // adjust for integer division error
                LINETO(segLen - width - 3,width/2 + 1);
                LINETO(width + 2,width/2 + 1);
            } else {
                LINETO(segLen - width - 1,width/2);
                LINETO(width,width/2);
            }
            LINETO(0,0);
            break;
        case 4 :
            pt += QPoint(0 , segLen + 1);
            ppt = pt;
            LIGHT;
            LINETO(width,width/2);
            DARK;
            LINETO(width,segLen - width - 2);
            LINETO(0,segLen - 2);
            LIGHT;
            LINETO(0,0);
            break;
        case 5 :
            pt += QPoint(segLen - 1 , segLen + 1);
            ppt = pt;
            DARK;
            LINETO(0,segLen - 2);
            LINETO(-width,segLen - width - 2);
            LIGHT;
            LINETO(-width,width/2);
            LINETO(0,0);
            break;
        case 6 :
            pt += QPoint(0 , segLen*2);
            ppt = pt;
            LIGHT;
            LINETO(width,-width);
            LINETO(segLen - width - 1,-width);
            LINETO(segLen - 1,0);
            DARK;
            LINETO(0,0);
            break;
        case 7 :
            if (smallPoint)   // if smallpoint place'.' between other digits
                pt += QPoint(segLen + width/2 , segLen*2);
            else
                pt += QPoint(segLen/2 , segLen*2);
            ppt = pt;
            DARK;
            LINETO(width,0);
            LINETO(width,-width);
            LIGHT;
            LINETO(0,-width);
            LINETO(0,0);
            break;
        case 8 :
            pt += QPoint(segLen/2 - width/2 + 1 , segLen/2 + width);
            ppt = pt;
            DARK;
            LINETO(width,0);
            LINETO(width,-width);
            LIGHT;
            LINETO(0,-width);
            LINETO(0,0);
            break;
        case 9 :
            pt += QPoint(segLen/2 - width/2 + 1 , 3*segLen/2 + width);
            ppt = pt;
            DARK;
            LINETO(width,0);
            LINETO(width,-width);
            LIGHT;
            LINETO(0,-width);
            LINETO(0,0);
            break;
        default :
            qWarning("QLCDNumber::drawSegment: (%s) Illegal segment id: %d\n",
                     q->objectName().toLocal8Bit().constData(), segmentNo);
        }
 
#undef LINETO
#undef LIGHT
#undef DARK
}
 
 
 
void QLCDNumber::setSegmentStyle(SegmentStyle s)
{
    Q_D(QLCDNumber);
    d->fill = (s == Flat || s == Filled);
    d->shadow = (s == Outline || s == Filled);
    update();
}
 
QLCDNumber::SegmentStyle QLCDNumber::segmentStyle() const
{
    Q_D(const QLCDNumber);
    Q_ASSERT(d->fill || d->shadow);
    if (!d->fill && d->shadow)
        return Outline;
    if (d->fill && d->shadow)
        return Filled;
    return Flat;
}
 
 
QSize QLCDNumber::sizeHint() const
{
    return QSize(10 + 9 * (digitCount() + (smallDecimalPoint() ? 0 : 1)), 23);
}
 
bool QLCDNumber::event(QEvent *e)
{
    return QFrame::event(e);
}
 
QT_END_NAMESPACE
 
#include "moc_qlcdnumber.cpp"