/* * KAsteroids - Copyright (c) Martin R. Jones 1997 * * Part of the KDE project */#include <qpainter.h>#include "ledmeter.h"KALedMeter::KALedMeter( QWidget *parent ) : QFrame( parent ){    mCRanges.setAutoDelete( TRUE );    mRange = 100;    mCount = 20;    mCurrentCount = 0;    mValue = 0;    setMinimumWidth( mCount * 2 + frameWidth() );}void KALedMeter::setRange( int r ){    mRange = r;    if ( mRange < 1 )        mRange = 1;    setValue( mValue );    update();}void KALedMeter::setCount( int c ){    mCount = c;    if ( mCount < 1 )        mCount = 1;    setMinimumWidth( mCount * 2 + frameWidth() );    calcColorRanges();    setValue( mValue );    update();}void KALedMeter::setValue( int v ){    mValue = v;    if ( mValue > mRange )        mValue = mRange;    else if ( mValue < 0 )        mValue = 0;    int c = ( mValue + mRange / mCount - 1 ) * mCount / mRange;    if ( c != mCurrentCount )    {        mCurrentCount = c;        update();    }}void KALedMeter::addColorRange( int pc, const QColor &c ){    ColorRange *cr = new ColorRange;    cr->mPc = pc;    cr->mColor = c;    mCRanges.append( cr );    calcColorRanges();}void KALedMeter::resizeEvent( QResizeEvent *e ){    QFrame::resizeEvent( e );    int w = ( width() - frameWidth() - 2 ) / mCount * mCount;    w += frameWidth() + 2;    setFrameRect( QRect( 0, 0, w, height() ) );}void KALedMeter::drawContents( QPainter *p ){    QRect b = contentsRect();    unsigned cidx = 0;    int ncol = mCount;    QColor col = colorGroup().foreground();       if ( !mCRanges.isEmpty() )    {        col = mCRanges.at( cidx )->mColor;        ncol = mCRanges.at( cidx )->mValue;    }    p->setBrush( col );    p->setPen( col );    int lw = b.width() / mCount;    int lx = b.left() + 1;    for ( int i = 0; i < mCurrentCount; i++, lx += lw )    {        if ( i > ncol )        {            if ( ++cidx < mCRanges.count() )            {                col = mCRanges.at( cidx )->mColor;                ncol = mCRanges.at( cidx )->mValue;                p->setBrush( col );                p->setPen( col );            }        }        p->drawRect( lx, b.top() + 1, lw - 1, b.height() - 2 );    }}void KALedMeter::calcColorRanges(){    int prev = 0;    ColorRange *cr;    for ( cr = mCRanges.first(); cr; cr = mCRanges.next() )    {        cr->mValue = prev + cr->mPc * mCount / 100;        prev = cr->mValue;    }}