/****************************************************************************
**
** Implementation of QLCDNumber class
**
** Created : 940518
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the widgets module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
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**********************************************************************/
#include "qlcdnumber.h"
#ifndef QT_NO_LCDNUMBER
#include "qbitarray.h"
#include "qpainter.h"
/*!
\class QLCDNumber qlcdnumber.h
\brief The QLCDNumber widget displays a number with LCD-like digits.
\ingroup basic
\mainclass
It can display a number in just about any size. It can display
decimal, hexadecimal, octal or binary numbers. It is easy to
connect to data sources using the display() slot, which is
overloaded to take any of five argument types.
There are also slots to change the base with setMode() and the
decimal point with setSmallDecimalPoint().
QLCDNumber emits the overflow() signal when it is asked to display
something beyond its range. The range is set by setNumDigits(),
but setSmallDecimalPoint() also influences it. If the display is
set to hexadecimal, octal or binary, the integer equivalent of the
value is displayed.
These digits and other symbols can be shown: 0/O, 1, 2, 3, 4, 5/S,
6, 7, 8, 9/g, minus, decimal point, A, B, C, D, E, F, h, H, L, o,
P, r, u, U, Y, colon, degree sign (which is specified as single
quote in the string) and space. QLCDNumber substitutes spaces for
illegal characters.
It is not possible to retrieve the contents of a QLCDNumber
object, although you can retrieve the numeric value with value().
If you really need the text, we recommend that you connect the
signals that feed the display() slot to another slot as well and
store the value there.
Incidentally, QLCDNumber is the very oldest part of Qt, tracing
back to a BASIC program on the \link
http://www.nvg.ntnu.no/sinclair/computers/zxspectrum/zxspectrum.htm
Sinclair Spectrum\endlink.
<img src=qlcdnum-m.png> <img src=qlcdnum-w.png>
\sa QLabel, QFrame
*/
/*!
\enum QLCDNumber::Mode
This type determines how numbers are shown.
\value Hex Hexadecimal
\value Dec Decimal
\value Oct Octal
\value Bin Binary
If the display is set to hexadecimal, octal or binary, the integer
equivalent of the value is displayed.
*/
/*!
\enum QLCDNumber::SegmentStyle
This type determines the visual appearance of the QLCDNumber
widget.
\value Outline gives raised segments filled with the background brush.
\value Filled gives raised segments filled with the foreground brush.
\value Flat gives flat segments filled with the foreground brush.
*/
/*!
\fn void QLCDNumber::overflow()
This signal is emitted whenever the QLCDNumber is asked to display
a too-large number or a too-long string.
It is never emitted by setNumDigits().
*/
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.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( ' ', len );
s += QString::fromLatin1(p);
}
break;
}
if ( negative ) {
for ( int i=0; i<(int)s.length(); i++ ) {
if ( s[i] != ' ' ) {
if ( i != 0 ) {
s[i-1] = '-';
} else {
s.insert( 0, '-' );
}
break;
}
}
}
if ( oflow )
*oflow = (int)s.length() > 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, 0 );
} else { // decimal base
int nd = ndigits;
do {
s.sprintf( "%*.*g", ndigits, nd, num );
int i = s.find('e');
if ( i > 0 && s[i+1]=='+' ) {
s[i] = ' ';
s[i+1] = 'e';
}
} while (nd-- && (int)s.length() > ndigits);
}
if ( oflow )
*oflow = (int)s.length() > 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];
}
/*!
Constructs an LCD number, sets the number of digits to 5, the base
to decimal, the decimal point mode to 'small' and the frame style
to a raised box. The segmentStyle() is set to \c Outline.
The \a parent and \a name arguments are passed to the QFrame
constructor.
\sa setNumDigits(), setSmallDecimalPoint()
*/
QLCDNumber::QLCDNumber( QWidget *parent, const char *name )
: QFrame( parent, name )
{
ndigits = 5;
init();
}
/*!
Constructs an LCD number, sets the number of digits to \a
numDigits, the base to decimal, the decimal point mode to 'small'
and the frame style to a raised box. The segmentStyle() is set to
\c Outline.
The \a parent and \a name arguments are passed to the QFrame
constructor.
\sa setNumDigits(), setSmallDecimalPoint()
*/
QLCDNumber::QLCDNumber( uint numDigits, QWidget *parent, const char *name )
: QFrame( parent, name )
{
ndigits = numDigits;
init();
}
/*!
\internal
*/
void QLCDNumber::init()
{
setFrameStyle( QFrame::Box | QFrame::Raised );
val = 0;
base = DEC;
smallPoint = FALSE;
setNumDigits( ndigits );
setSegmentStyle( Outline );
d = 0;
setSizePolicy( QSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum ) );
}
/*!
Destroys the LCD number.
*/
QLCDNumber::~QLCDNumber()
{
}
/*!
\property QLCDNumber::numDigits
\brief the current number of digits displayed
Corresponds to the current number of digits. If \l
QLCDNumber::smallDecimalPoint is FALSE, the decimal point occupies
one digit position.
\sa numDigits, smallDecimalPoint
*/
void QLCDNumber::setNumDigits( int numDigits )
{
if ( numDigits > 99 ) {
#if defined(QT_CHECK_RANGE)
qWarning( "QLCDNumber::setNumDigits: (%s) Max 99 digits allowed",
name( "unnamed" ) );
#endif
numDigits = 99;
}
if (numDigits < 0 ) {
#if defined(QT_CHECK_RANGE)
qWarning( "QLCDNumber::setNumDigits: (%s) Min 0 digits allowed",
name( "unnamed" ) );
#endif
numDigits = 0;
}
if ( digitStr.isNull() ) { // from constructor
ndigits = numDigits;
digitStr.fill( ' ', ndigits );
points.fill( 0, ndigits );
digitStr[ndigits - 1] = '0'; // "0" is the default number
} else {
bool doDisplay = ndigits == 0;
if ( numDigits == ndigits ) // no change
return;
register int i;
int dif;
if ( numDigits > ndigits ) { // expand
dif = numDigits - ndigits;
QString buf;
buf.fill( ' ', dif );
digitStr.insert( 0, buf );
points.resize( numDigits );
for ( i=numDigits-1; i>=dif; i-- )
points.setBit( i, points.testBit(i-dif) );
for ( i=0; i<dif; i++ )
points.clearBit( i );
} else { // shrink
dif = ndigits - numDigits;
digitStr = digitStr.right( numDigits );
QBitArray tmpPoints = points.copy();
points.resize( numDigits );
for ( i=0; i<(int)numDigits; i++ )
points.setBit( i, tmpPoints.testBit(i+dif) );
}
ndigits = numDigits;
if ( doDisplay )
display( value() );
update();
}
}
/*!
\overload
Returns TRUE if \a num is too big to be displayed in its entirety;
otherwise returns FALSE.
\sa display(), numDigits(), smallDecimalPoint()
*/
bool QLCDNumber::checkOverflow( int num ) const
{
bool of;
int2string( num, base, ndigits, &of );
return of;
}
/*!
Returns TRUE if \a num is too big to be displayed in its entirety;
otherwise returns FALSE.
\sa display(), numDigits(), smallDecimalPoint()
*/
bool QLCDNumber::checkOverflow( double num ) const
{
bool of;
double2string( num, base, ndigits, &of );
return of;
}
/*!
\property QLCDNumber::mode
\brief the current display mode (number base)
Corresponds to the current display mode, which is one of \c BIN,
\c OCT, \c DEC (the default) and \c HEX. \c DEC mode can display
floating point values, the other modes display the integer
equivalent.
\sa smallDecimalPoint(), setHexMode(), setDecMode(), setOctMode(), setBinMode()
*/
QLCDNumber::Mode QLCDNumber::mode() const
{
return (QLCDNumber::Mode) base;
}
void QLCDNumber::setMode( Mode m )
{
base = m;
display( val );
}
/*!
\property QLCDNumber::value
\brief the displayed value
This property corresponds to the current value displayed by the
LCDNumber.
If the displayed value is not a number, the property has a value
of 0.
*/
double QLCDNumber::value() const
{
return val;
}
/*!
\overload
Displays the number \a num.
*/
void QLCDNumber::display( double num )
{
val = num;
bool of;
QString s = double2string( num, base, ndigits, &of );
if ( of )
emit overflow();
else
internalSetString( s );
}
/*!
\property QLCDNumber::intValue
\brief the displayed value rounded to the nearest integer
This property corresponds to the nearest integer to the current
value displayed by the LCDNumber. This is the value used for
hexadecimal, octal and binary modes.
If the displayed value is not a number, the property has a value
of 0.
*/
int QLCDNumber::intValue() const
{
return (int)(val < 0 ? val - 0.5 : val + 0.5);
}
/*!
\overload
Displays the number \a num.
*/
void QLCDNumber::display( int num )
{
val = (double)num;
bool of;
QString s = int2string( num, base, ndigits, &of );
if ( of )
emit overflow();
else
internalSetString( s );
}
/*!
Displays the number represented by the string \a s.
This version of the function disregards mode() and
smallDecimalPoint().
These digits and other symbols can be shown: 0/O, 1, 2, 3, 4, 5/S,
6, 7, 8, 9/g, minus, decimal point, A, B, C, D, E, F, h, H, L, o,
P, r, u, U, Y, colon, degree sign (which is specified as single
quote in the string) and space. QLCDNumber substitutes spaces for
illegal characters.
*/
void QLCDNumber::display( const QString &s )
{
val = 0;
bool ok = FALSE;
double v = s.toDouble( &ok );
if ( ok )
val = v;
internalSetString( s );
}
/*!
Calls setMode( HEX ). Provided for convenience (e.g. for
connecting buttons to it).
\sa setMode(), setDecMode(), setOctMode(), setBinMode(), mode()
*/
void QLCDNumber::setHexMode()
{
setMode( HEX );
}
/*!
Calls setMode( DEC ). Provided for convenience (e.g. for
connecting buttons to it).
\sa setMode(), setHexMode(), setOctMode(), setBinMode(), mode()
*/
void QLCDNumber::setDecMode()
{
setMode( DEC );
}
/*!
Calls setMode( OCT ). Provided for convenience (e.g. for
connecting buttons to it).
\sa setMode(), setHexMode(), setDecMode(), setBinMode(), mode()
*/
void QLCDNumber::setOctMode()
{
setMode( OCT );
}
/*!
Calls setMode( BIN ). Provided for convenience (e.g. for
connecting buttons to it).
\sa setMode(), setHexMode(), setDecMode(), setOctMode(), mode()
*/
void QLCDNumber::setBinMode()
{
setMode( BIN );
}
/*!
\property QLCDNumber::smallDecimalPoint
\brief the style of the decimal point
If TRUE the decimal point is drawn between two digit positions.
Otherwise it occupies a digit position of its own, i.e. is drawn
in a digit position. The default is FALSE.
The inter-digit space is made slightly wider when the decimal
point is drawn between the digits.
\sa mode
*/
void QLCDNumber::setSmallDecimalPoint( bool b )
{
smallPoint = b;
}
/*!
Draws the LCD number using painter \a p. This function is called
from QFrame::paintEvent().
*/
void QLCDNumber::drawContents( QPainter *p )
{
if ( smallPoint )
drawString( digitStr, *p, &points, FALSE );
else
drawString( digitStr, *p, 0, FALSE );
}
/*!
\internal
*/
void QLCDNumber::internalDisplay( const QString & )
{
// Not used anymore
}
void QLCDNumber::internalSetString( const QString& s )
{
QString buffer;
int i;
int len = s.length();
QBitArray newPoints(ndigits);
if ( !smallPoint ) {
if ( len == ndigits )
buffer = s;
else
buffer = s.right( ndigits ).rightJustify( ndigits, ' ' );
} else {
int index = -1;
bool lastWasPoint = TRUE;
newPoints.clearBit(0);
for ( i=0; i<len; i++ ) {
if ( s[i] == '.' ) {
if ( lastWasPoint ) { // point already set for digit?
if ( index == ndigits - 1 ) // no more digits
break;
index++;
buffer[index] = ' '; // 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] = ' ';
newPoints.clearBit(i);
}
}
}
if ( buffer == digitStr )
return;
if ( backgroundMode() == FixedPixmap
|| colorGroup().brush( QColorGroup::Background ).pixmap() ) {
digitStr = buffer;
if ( smallPoint )
points = newPoints;
repaint( contentsRect() );
} else {
QPainter p( this );
if ( !smallPoint )
drawString( buffer, p );
else
drawString( buffer, p, &newPoints );
}
}
/*!
\internal
*/
void QLCDNumber::drawString( const QString &s, QPainter &p,
QBitArray *newPoints, bool newString )
{
QPoint pos;
int digitSpace = smallPoint ? 2 : 1;
int xSegLen = width()*5/(ndigits*(5 + digitSpace) + digitSpace);
int ySegLen = height()*5/12;
int segLen = ySegLen > xSegLen ? xSegLen : ySegLen;
int xAdvance = segLen*( 5 + digitSpace )/5;
int xOffset = ( width() - ndigits*xAdvance + segLen/5 )/2;
int yOffset = ( 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], digitStr[i].latin1() );
else
drawDigit( pos, p, segLen, s[i]);
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;
if ( (int)digitStr.length() > ndigits )
digitStr.truncate( ndigits );
if ( newPoints )
points = *newPoints;
}
}
/*!
\internal
*/
void QLCDNumber::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( QPointArray &a, const QPoint &p )
{
uint n = a.size();
a.resize( n + 1 );
a.setPoint( n, p );
}
/*!
\internal
*/
void QLCDNumber::drawSegment( const QPoint &pos, char segmentNo, QPainter &p,
int segLen, bool erase )
{
QPoint pt = pos;
int width = segLen/5;
const QColorGroup & g = colorGroup();
QColor lightColor,darkColor,fgColor;
if ( erase ){
lightColor = backgroundColor();
darkColor = lightColor;
fgColor = lightColor;
} else {
lightColor = g.light();
darkColor = g.dark();
fgColor = g.foreground();
}
#define LINETO(X,Y) addPoint( a, QPoint(pt.x() + (X),pt.y() + (Y)))
#define LIGHT
#define DARK
if ( fill ) {
QPointArray a(0);
//The following is an exact copy of the switch below.
//don't make any changes here
switch ( segmentNo ) {
case 0 :
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(pt);
DARK;
LINETO(width,0);
LINETO(width,-width);
LIGHT;
LINETO(0,-width);
LINETO(0,0);
break;
#if defined(QT_CHECK_RANGE)
default :
qWarning( "QLCDNumber::drawSegment: (%s) Internal error."
" Illegal segment id: %d\n",
name( "unnamed" ), segmentNo );
#endif
}
// End exact copy
p.setPen( fgColor );
p.setBrush( fgColor );
p.drawPolygon( a );
p.setBrush( NoBrush );
pt = pos;
}
#undef LINETO
#undef LIGHT
#undef DARK
#define LINETO(X,Y) p.lineTo(QPoint(pt.x() + (X),pt.y() + (Y)))
#define LIGHT p.setPen(lightColor)
#define DARK p.setPen(darkColor)
if ( shadow )
switch ( segmentNo ) {
case 0 :
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(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);
p.moveTo(pt);
DARK;
LINETO(width,0);
LINETO(width,-width);
LIGHT;
LINETO(0,-width);
LINETO(0,0);
break;
#if defined(QT_CHECK_RANGE)
default :
qWarning( "QLCDNumber::drawSegment: (%s) Internal error."
" Illegal segment id: %d\n",
name( "unnamed" ), segmentNo );
#endif
}
#undef LINETO
#undef LIGHT
#undef DARK
}
/*!
\property QLCDNumber::segmentStyle
\brief the style of the LCDNumber
\table
\header \i Style \i Result
\row \i \c Outline
\i Produces raised segments filled with the background color
(this is the default).
\row \i \c Filled
\i Produces raised segments filled with the foreground color.
\row \i \c Flat
\i Produces flat segments filled with the foreground color.
\endtable
\c Outline and \c Filled will additionally use
QColorGroup::light() and QColorGroup::dark() for shadow effects.
*/
void QLCDNumber::setSegmentStyle( SegmentStyle s )
{
fill = ( s == Flat || s == Filled );
shadow = ( s == Outline || s == Filled );
update();
}
QLCDNumber::SegmentStyle QLCDNumber::segmentStyle() const
{
Q_ASSERT( fill || shadow );
if ( !fill && shadow )
return Outline;
if ( fill && shadow )
return Filled;
return Flat;
}
/*!\reimp
*/
QSize QLCDNumber::sizeHint() const
{
return QSize( 10 + 9 * (numDigits() + (smallDecimalPoint() ? 0 : 1)), 23 );
}
#endif // QT_NO_LCDNUMBER