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