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/**********************************************************************
** MGraph
**
** A reusable graph widget.
**
** Copyright (C) 2002, Michael Lauer
** mickey@tm.informatik.uni-frankfurt.de
** http://www.Vanille.de
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
**********************************************************************/
#include "mgraph.h"
#include "graphbackground.xpm"
#include <qpainter.h>
#include <qpixmap.h>
//---------------------------------------------------------------------------
MGraph::MGraph( QWidget *parent, const char *name, WFlags f )
: QFrame( parent, name, f ), min( 0 ), max( 0), values( 0 )
{
background = new QPixmap( (const char** ) graphbackground_xpm );
values = new ValueList();
}
void MGraph::setFrameStyle( int style )
{
QFrame::setFrameStyle( style );
setFixedSize( background->width() + frameWidth()*2, background->height() + frameWidth()*2 );
}
void MGraph::addValue( int value, bool followMax )
{
values->append( value );
if ( followMax && (value > max) )
setMax( value );
if ( values->count() == background->width()-2 ) // compensate for graph display element border
values->remove( values->begin() );
repaint( false );
}
void MGraph::drawContents( QPainter* p )
{
p->drawPixmap( frameWidth(), frameWidth(), (const QPixmap&) *background );
p->setPen( QColor( 40, 235, 40 ) );
int x = frameWidth() + 2; // compensate for graph display element border
int y = 0;
ValueList::ConstIterator it;
for ( it = values->begin(); it != values->end(); ++it )
{
y = frameWidth() + background->height() -3 - ( ( *(it)*(background->height()-4 ) /max ) );
p->drawPoint( x++, y );
}
}
MGraph::~MGraph()
{
delete background;
delete values;
}
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