qlcdnumber.cpp File Reference

#include "qlcdnumber.h"
#include "qbitarray.h"
#include "qpainter.h"
#include "private/qframe_p.h"

Go to the source code of this file.

Classes
class	QLCDNumberPrivate

Macros
#define	DARK
#define	DARK   p.setPen(darkColor)
#define	LIGHT
#define	LIGHT   p.setPen(lightColor)
#define	LINETO(X, Y)   addPoint(a, QPoint(pt.x() + (X),pt.y() + (Y)))
#define	LINETO(X, Y)

Functions
static void	addPoint (QPolygon &a, const QPoint &p)
static QString	double2string (double num, int base, int ndigits, bool *oflow)
static const char *	getSegments (char ch)
static QString	int2string (int num, int base, int ndigits, bool *oflow)

Macro Definition Documentation

DARK [1/2]

#define DARK

Referenced by QLCDNumberPrivate::drawSegment().

DARK [2/2]

#define DARK   p.setPen(darkColor)

LIGHT [1/2]

#define LIGHT

Referenced by QLCDNumberPrivate::drawSegment().

LIGHT [2/2]

#define LIGHT   p.setPen(lightColor)

LINETO [1/2]

#define LINETO	(		X,
			Y
	)		addPoint(a, QPoint(pt.x() + (X),pt.y() + (Y)))

Referenced by QLCDNumberPrivate::drawSegment().

LINETO [2/2]

#define LINETO	(		X,
			Y
	)

Value:

p.drawLine(ppt.x(), ppt.y(), pt.x()+(X), pt.y()+(Y)); \
                    ppt = QPoint(pt.x()+(X), pt.y()+(Y))

Function Documentation

addPoint()

static void addPoint ( QPolygon &  a, const QPoint &  p  )

static

Definition at line 989 of file qlcdnumber.cpp.

{
    uint n = a.size();
    a.resize(n + 1);
    a.setPoint(n, p);
}

double2string()

static QString double2string ( double  num, int  base, int  ndigits, bool *  oflow  )

static

Definition at line 235 of file qlcdnumber.cpp.

Referenced by QLCDNumber::checkOverflow(), and QLCDNumber::display().

{
    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, 0);
    } else {                                    // decimal base
        int nd = ndigits;
        do {
            s.sprintf("%*.*g", ndigits, nd, num);
            int i = s.indexOf(QLatin1Char('e'));
            if (i > 0 && s[i+1]==QLatin1Char('+')) {
                s[i] = QLatin1Char(' ');
                s[i+1] = QLatin1Char('e');
            }
        } while (nd-- && (int)s.length() > ndigits);
    }
    if (oflow)
        *oflow = (int)s.length() > ndigits;
    return s;
}

getSegments()

static const char* getSegments ( char  ch )

static

Definition at line 263 of file qlcdnumber.cpp.

Referenced by QLCDNumberPrivate::drawDigit().

{
    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];
}

int2string()

static QString int2string ( int  num, int  base, int  ndigits, bool *  oflow  )

static

Definition at line 178 of file qlcdnumber.cpp.

Referenced by QLCDNumber::checkOverflow(), QLCDNumber::display(), and double2string().

{
    QString s;
    bool negative;
    if (num < 0) {
        negative = true;
        num      = -num;
    } else {
        negative = false;
    }
    switch(base) {
        case QLCDNumber::Hex:
            s.sprintf("%*x", ndigits, num);
            break;
        case QLCDNumber::Dec:
            s.sprintf("%*i", ndigits, num);
            break;
        case QLCDNumber::Oct:
            s.sprintf("%*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.fill(QLatin1Char(' '), len);
                s += QString::fromLatin1(p);
            }
            break;
    }
    if (negative) {
        for (int i=0; i<(int)s.length(); i++) {
            if (s[i] != QLatin1Char(' ')) {
                if (i != 0) {
                    s[i-1] = QLatin1Char('-');
                } else {
                    s.insert(0, QLatin1Char('-'));
                }
                break;
            }
        }
    }
    if (oflow)
        *oflow = (int)s.length() > ndigits;
    return s;
}