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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
/*
* KAsteroids - Copyright (c) Martin R. Jones 1997
*
* Part of the KDE project
*/
#include <qpainter.h>
//Added by qt3to4:
#include <QResizeEvent>
#include <Q3Frame>
#include "ledmeter.h"
KALedMeter::KALedMeter( QWidget *parent ) : Q3Frame( 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 )
{
Q3Frame::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;
}
}
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