tdegraphics/libkscan/sizeindicator.cpp

/* This file is part of the KDE Project
   Copyright (C) 2000 Klaas Freitag <freitag@suse.de>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "sizeindicator.h"

#include <tqpalette.h>
#include <tqimage.h>

#include <kimageeffect.h>
#include <klocale.h>
#include <kdebug.h>
#include <tqpainter.h>



SizeIndicator::SizeIndicator( TQWidget *tqparent, long  thres, long crit )
   :TQLabel( tqparent )
{
   sizeInByte = -1;
   setFrameStyle( TQFrame::Box | TQFrame::Sunken );
   setMinimumWidth( fontMetrics().width( TQString::tqfromLatin1("MMM.MM MB") ));
   setCritical( crit );
   threshold = thres;

}


void SizeIndicator::setCritical( long crit )
{
   critical = crit;
   devider = 255.0 / double( critical );
}


void SizeIndicator::setThreshold( long thres )
{
   threshold = thres;
}


SizeIndicator::~SizeIndicator()
{

}

void SizeIndicator::setSizeInByte( long newSize )
{
   sizeInByte = newSize;
   kdDebug(29000) << "New size in byte: " << newSize << endl ;

   TQString t;

   TQString unit = i18n( "%1 kB" );
   double sizer = double(sizeInByte)/1024.0; // produces kiloBytes
   int precision = 1;
   int fwidth = 3;

   if( sizer > 999.9999999 )
   {
      unit = i18n( "%1 MB" );
      sizer = sizer / 1024.0;
      precision = 2;
      fwidth = 2;
   }

   t = unit.tqarg( sizer, fwidth, 'f', precision);
   setText(t);

}



void SizeIndicator::drawContents( TQPainter *p )
{
   TQSize s = size();

   TQColor warnColor;

   if( sizeInByte >= threshold )
   {
      int c = int( double(sizeInByte) * devider );
      if( c > 255 ) c = 255;

      warnColor.setHsv( 0, c, c );

      p->drawImage( 0,0,
		    KImageEffect::unbalancedGradient( s, tqcolorGroup().background(),
						      warnColor, KImageEffect::CrossDiagonalGradient, 200,200 ));
   }
   /* Displaying the text */
   TQString t = text();
   p->drawText( 0, 0, s.width(), s.height(),
		AlignHCenter | AlignVCenter, t);

}

#include "sizeindicator.moc"