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displaywid.cpp

//======================================================================
// File:          displaywid.cpp
// Author:  Matthias Toussaint
// Created: Fri Nov 23 22:34:30 CET 2001
//----------------------------------------------------------------------
// Permission to use, copy, modify, and distribute this software and its
// documentation  for any  purpose and  without fee is  hereby  granted,
// provided  that below copyright notice appear  in all copies  and that
// both  that  copyright  notice and  this permission  notice  appear in
// supporting documentation.
// 
// This  file is  provided AS IS  with no  warranties  of any kind.  The
// author shall  have no liability  with respect  to the infringement of
// copyrights, trade  secrets  or any patents by  this file  or any part
// thereof.  In no event will the author be liable  for any lost revenue
// or profits or other special, indirect and consequential damages.
//----------------------------------------------------------------------
// (c) 2001 Matthias Toussaint
//======================================================================

#include <displaywid.h>
#include <qpixmap.h>
#include <qbitmap.h>
#include <qimage.h>
#include <qpainter.h>

// less than elegant use of single pixmaps for everything.
// But hey, it works!
//
#include <numbers.xpm>
#include <decimal.xpm>
#include <specialchars.xpm>
#include <minus.xpm>
#include <G.xpm>
#include <cm.xpm>
#include <k.xpm>
#include <m.xpm>
#include <u.xpm>
#include <n.xpm>
#include <p.xpm>
#include <Hz.xpm>
#include <F.xpm>
#include <V.xpm>
#include <A.xpm>
#include <H.xpm>
#include <W.xpm>
#include <DBM.xpm>
#include <Ohm.xpm>
#include <deg.xpm>
#include <percent.xpm>

#include <numbers_small.xpm>
#include <decimal_small.xpm>
#include <specialchars_small.xpm>
#include <minus_small.xpm>
#include <G_small.xpm>
#include <cm_small.xpm>
#include <k_small.xpm>
#include <m_small.xpm>
#include <u_small.xpm>
#include <n_small.xpm>
#include <p_small.xpm>
#include <Hz_small.xpm>
#include <F_small.xpm>
#include <V_small.xpm>
#include <A_small.xpm>
#include <H_small.xpm>
#include <W_small.xpm>
#include <DBM_small.xpm>
#include <Ohm_small.xpm>
#include <deg_small.xpm>
#include <percent_small.xpm>

#include <min_str.xpm>
#include <max_str.xpm>

#include <diode.xpm>
#include <ac.xpm>
#include <dc.xpm>

#include <null_bar.xpm>
#include <ten_bar.xpm>
#include <twenty_bar.xpm>
#include <thirty_bar.xpm>
#include <fourty_bar.xpm>
#include <fifty_bar.xpm>
#include <sixty_bar.xpm>

#include <iostream>

DisplayWid::DisplayWid( QWidget *parent, const char *name ) :
  QWidget( parent, name ),
  m_paintBar( true ),
  m_numValues( 1 )
{
  // HACK: My GIMP doesn't save XBM !!!!
  //
  m_bigDigit = createBitmap((const char **)numbers_xpm);
  m_bigSpecialChar = createBitmap((const char **)specialchars_xpm);
  
  m_bigDecimal = createBitmap((const char **)decimal_xpm);
  m_bigMinus = createBitmap((const char **)minus_xpm);
  m_bigG = createBitmap((const char **)G_xpm);
  m_bigM = createBitmap((const char **)M_xpm);
  m_bigk = createBitmap((const char **)k_xpm);
  m_bigm = createBitmap((const char **)m_xpm);
  m_bigu = createBitmap((const char **)u_xpm);
  m_bign = createBitmap((const char **)n_xpm);
  m_bigp = createBitmap((const char **)p_xpm);
  m_bigHz = createBitmap((const char **)Hz_xpm);
  m_bigF = createBitmap((const char **)F_xpm);
  m_bigV = createBitmap((const char **)V_xpm);
  m_bigA = createBitmap((const char **)A_xpm);
  m_bigH = createBitmap((const char **)H_xpm);
  m_bigW = createBitmap((const char **)W_xpm);
  m_bigDBM = createBitmap((const char **)DBM_xpm);
  m_bigOhm = createBitmap((const char **)Ohm_xpm);
  m_bigDeg = createBitmap((const char **)deg_xpm);
  m_bigPercent = createBitmap((const char **)percent_xpm);
  
  m_smallDigit = createBitmap((const char **)numbers_small_xpm);
  m_smallSpecialChar = createBitmap((const char **)specialchars_small_xpm);
  
  m_smallDecimal = createBitmap((const char **)decimal_small_xpm);
  m_smallMinus = createBitmap((const char **)minus_small_xpm);
  m_smallG = createBitmap((const char **)G_small_xpm);
  m_smallM = createBitmap((const char **)M_small_xpm);
  m_smallk = createBitmap((const char **)k_small_xpm);
  m_smallm = createBitmap((const char **)m_small_xpm);
  m_smallu = createBitmap((const char **)u_small_xpm);
  m_smalln = createBitmap((const char **)n_small_xpm);
  m_smallp = createBitmap((const char **)p_small_xpm);
  m_smallHz = createBitmap((const char **)Hz_small_xpm);
  m_smallF = createBitmap((const char **)F_small_xpm);
  m_smallV = createBitmap((const char **)V_small_xpm);
  m_smallA = createBitmap((const char **)A_small_xpm);
  m_smallH = createBitmap((const char **)H_small_xpm);
  m_smallW = createBitmap((const char **)W_small_xpm);
  m_smallDBM = createBitmap((const char **)DBM_small_xpm);
  m_smallOhm = createBitmap((const char **)Ohm_small_xpm);
  m_smallDeg = createBitmap((const char **)deg_small_xpm);
  m_smallPercent = createBitmap((const char **)percent_small_xpm);
  
  m_minStr = createBitmap((const char **)min_str_xpm);
  m_maxStr = createBitmap((const char **)max_str_xpm);
  
  m_diode = createBitmap((const char **)diode_xpm);
  m_ac = createBitmap((const char **)ac_xpm);
  m_dc = createBitmap((const char **)dc_xpm);  
  
  m_bar[0] = createBitmap((const char **)null_bar_xpm);   
  m_bar[1] = createBitmap((const char **)ten_bar_xpm);   
  m_bar[2] = createBitmap((const char **)twenty_bar_xpm);   
  m_bar[3] = createBitmap((const char **)thirty_bar_xpm);   
  m_bar[4] = createBitmap((const char **)fourty_bar_xpm);   
  m_bar[5] = createBitmap((const char **)fifty_bar_xpm);   
  m_bar[6] = createBitmap((const char **)sixty_bar_xpm);   
  
  setBackgroundMode( QWidget::NoBackground );
  
  setDisplayMode( 1, true, true, 1 );
}

QBitmap *
DisplayWid::createBitmap( const char **data )
{
  QBitmap *bm = new QBitmap;
  *bm = QImage(data).convertDepth( 1, ThresholdDither ); 
  bm->setMask( *bm );
  
  return bm;  
}

DisplayWid::~DisplayWid()
{
  delete m_bigDigit;
  delete m_smallDigit;
  delete m_bigDecimal;
  delete m_smallDecimal;
}

void
DisplayWid::setDisplayMode( int dm, bool minMax, bool bar, int numValues )
{
  m_displayMode = dm;
  m_showMinMax  = minMax;
  m_showBar     = bar;
  m_numValues   = numValues;
  
  int numDigits = calcNumDigits( m_displayMode );
    
  m_minMaxW = m_showMinMax ? (numDigits)*18+30+24 : 10;
  int digitsW = (numDigits)*49+30+30;
  m_extraH = m_numValues > 1 ? 24 : 0;
  m_extraW = (numDigits)*18+30+10;
  m_minW = m_extraW * (m_numValues-1);
  
  setFixedSize( QMAX( m_minW, digitsW+m_minMaxW ), 76 + (m_showBar ? 26 : 2)+m_extraH );
  
  switch (m_displayMode)
  {
  case 0:
    m_range = 2000;
    break;
    
  case 1:
    m_range = 4000;
    break;
    
  case 2:
    m_range = 20000;
    break;
    
  case 3:
    m_range = 50000;
    break;
    
  case 4:
    m_range = 100000;
    break;
  
  case 5:
    m_range = 200000;
    break;
  
  case 6:
    m_range = 400000;
    break;
  
  case 7:
    m_range = 1000000;
    break;
    
  case 8:
    m_range = 6000;
    break;
  }
  
  update();
}

void
DisplayWid::setShowBar( bool bar )
{
  m_paintBar = bar;
}

void
DisplayWid::setValue( int id, const QString & value )
{
  m_value[id] = value;
}

void
DisplayWid::setMinValue( const QString & value )
{
  m_minValue = value;
}

void
DisplayWid::setMaxValue( const QString & value )
{
  m_maxValue = value;
}

void
DisplayWid::setUnit( int id, const QString & value )
{
  m_unit[id] = value;
}

void
DisplayWid::setMinUnit( const QString & value )
{
  m_minUnit = value;
}

void
DisplayWid::setMaxUnit( const QString & value )
{
  m_maxUnit = value;
}

void
DisplayWid::setMode( int id, const QString & value )
{
  m_mode[id] = value;
}

void
DisplayWid::paintEvent( QPaintEvent * )
{  
  QPixmap pix( width(), height() );
  pix.fill( colorGroup().background() );
  QPainter p;
  
  int numDigits = calcNumDigits( m_displayMode );
  
  if (!m_value[0].isEmpty())
  {
    p.begin(&pix);
    
    p.setPen( colorGroup().foreground() );

    if (m_showMinMax)
    {
      p.save();
      p.drawPixmap( 6, 16, *m_minStr );
      p.translate( 28, 12 );
      drawSmallNumber( &p, m_minValue );
      p.translate( (numDigits)*18+12, 12 );
      drawSmallUnit( &p, m_minUnit );
      p.restore();

      p.save();
      p.drawPixmap( 6, 12+34, *m_maxStr );
      p.translate( 28,8+34 );
      drawSmallNumber( &p, m_maxValue );
      p.translate( (numDigits)*18+12, 12 );
      drawSmallUnit( &p, m_maxUnit );
      p.restore();
    }
    
    p.save();
    if (m_showMinMax)
    {
      p.translate( 6+16+(numDigits*18)+30, 8 );
    }
    else
    {
      p.translate( 6, 8 );
    }
    
    drawBigNumber( &p, m_value[0] );
    p.translate( (numDigits)*49+24, 42 );
    drawBigUnit( &p, m_unit[0] );

    if (m_mode[0] == "DI")
    {
      p.drawPixmap( 0, -36, *m_diode );
    }
    else if (m_mode[0] == "AC")
    {
      p.drawPixmap( 0, -36, *m_ac );
    }
    else if (m_mode[0] == "DC")
    {
      p.drawPixmap( 0, -36, *m_dc );
    }
 
    p.restore();
    
    if (m_showBar)
    {
      QString val;

      for (unsigned i=0; i<m_value[0].length(); ++i)
      {
        if (m_value[0][i].digitValue() != -1)
        {
          val += m_value[0][i];
        }
      }       
      double percent = val.toDouble() / (double)m_range;

      int step = width()-18;
      int off = 0;
      if (0 == m_displayMode || 2 == m_displayMode)
      {
        step /= 20;
        off = (width()-20*step)/2-2;
      }
      else if (1 == m_displayMode || 3 == m_displayMode)
      {
        step /= 40;
        off = (width()-40*step)/2-2;
      }
      else if (8 == m_displayMode)
      {
        step /= 60;
        off = (width()-60*step)/2-2;
      }
      else
      {
        step /= 50;
        off = (width()-50*step)/2-2;
      }

      for(int i=off, c=0, n=0; i<=width()-off; i+=step, ++c)
      {
        if (!(c%5))
        {
          p.drawLine( i, height()-16, i, height()-12 );

          if (!(c%10))
          {
            p.drawPixmap( i-4, height()-16-9, *m_bar[n++] );
          }
        }
        else
        {
          p.drawLine( i, height()-14, i, height()-12 );
        }
      }

      if (m_paintBar)
      {
        p.fillRect( off, height()-10, 
                    (int)qRound((double)(width()-2*off)*percent ), 5, 
                    colorGroup().foreground() );
      }
    }
    
    p.translate( 6, 76 );
    
    for (int i=1; i<m_numValues; ++i)
    {
      drawSmallNumber( &p, m_value[i] );
      p.save();
      p.translate( (numDigits)*18+12, 12 );
      drawSmallUnit( &p, m_unit[i] );
      p.restore();
      p.translate( m_extraW, 0 );
    }
    
    p.end();
  }
 
  p.begin(this);
  p.drawPixmap(0,0,pix);
  p.end();
}

void
DisplayWid::drawSmallNumber( QPainter *p, const QString & num )
{
  int x = 0;  
  int offset = ((m_displayMode > 1) && (m_displayMode != 8) ? 0 : 1);
          
  if (num[offset] == '-')
  {
    p->drawPixmap( 0, 9, *m_smallMinus );
  }
  
  x += 12;
     
  for (unsigned i=1+offset; i<num.length(); i++)
  {
    if (num[i] == '.')
    {
      p->drawPixmap( x-5, 0, *m_smallDecimal );
    }
    else if (num[i].lower() == 'a')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*0, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'b')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*1, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'd')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*2, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'e')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*3, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'h')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*4, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'l')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*5, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'n')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*6, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'o')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*7, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'p')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*8, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'r')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*9, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 's')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*10, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 't')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*11, 0, 12, 21 );
      x += 18;
    }
    else if (num[i].lower() == 'y')
    {
      p->drawPixmap( x, 0, *m_smallSpecialChar, 12*12, 0, 12, 21 );
      x += 18;
    }
    else
    {
      int digit = num[i].latin1()-'0';
      
      if (digit >= 0 && digit <= 9)
      {
        p->drawPixmap( x, 0, *m_smallDigit, 12*digit, 0, 12, 21 );
      }
      x += 18;
    }
  }
}

void
DisplayWid::drawBigUnit( QPainter *p, const QString & str )
{
  int index = 0;
  int x = 0;
  
  if (str[0] == 'G')
  {
    p->drawPixmap( x, 0, *m_bigG );
    x += m_bigG->width()+2;
    index++;
  }
  else if (str[0] == 'M')
  {
    p->drawPixmap( x, 0, *m_bigM );
    x += m_bigM->width()+2;
    index++;
  }
  else if (str[0] == 'k')
  {
    p->drawPixmap( x, 0, *m_bigk );
    x += m_bigk->width()+2;
    index++;
  }
  else if (str[0] == 'm')
  {
    p->drawPixmap( x, 0, *m_bigm );
    x += m_bigm->width()+2;
    index++;
  }
  else if (str[0] == 'u')
  {
    p->drawPixmap( x, 3, *m_bigu );
    x += m_bigu->width()+2;
    index++;
  }
  else if (str[0] == 'n')
  {
    p->drawPixmap( x, 0, *m_bign );
    x += m_bign->width()+2;
    index++;
  }
  
  if (str.mid(index) == "Ohm")
  {
    p->drawPixmap( x, 0, *m_bigOhm );
  }
  else if (str.mid(index) == "C")
  {
    p->drawPixmap( x, 0, *m_bigDeg );
  }
  else if (str.mid(index) == "Hz")
  {
    p->drawPixmap( x, 0, *m_bigHz );
  }
  else if (str.mid(index) == "F")
  {
    p->drawPixmap( x, 0, *m_bigF );
  }
  else if (str.mid(index) == "H")
  {
    p->drawPixmap( x, 0, *m_bigH );
  }
  else if (str.mid(index) == "W")
  {
    p->drawPixmap( x, 0, *m_bigW );
  }
  else if (str.mid(index) == "dBm")
  {
    p->drawPixmap( x, 0, *m_bigDBM );
  }
  else if (str.mid(index) == "A")
  {
    p->drawPixmap( x, 0, *m_bigA );
  }
  else if (str.mid(index) == "V")
  {
    p->drawPixmap( x, 0, *m_bigV );
  }
  else if (str.mid(index) == "%")
  {
    p->drawPixmap( x, 0, *m_bigPercent );
  }
}

void
DisplayWid::drawSmallUnit( QPainter *p, const QString & str )
{
  int index = 0;
  int x = 0;
  
  if (str[0] == 'G')
  {
    p->drawPixmap( x, 0, *m_smallG );
    x += m_smallG->width()+1;
    index++;
  }
  else if (str[0] == 'M')
  {
    p->drawPixmap( x, 0, *m_smallM );
    x += m_smallM->width()+1;
    index++;
  }
  else if (str[0] == 'k')
  {
    p->drawPixmap( x, 0, *m_smallk );
    x += m_smallk->width()+1;
    index++;
  }
  else if (str[0] == 'm')
  {
    p->drawPixmap( x, 0, *m_smallm );
    x += m_smallm->width()+1;
    index++;
  }
  else if (str[0] == 'u')
  {
    p->drawPixmap( x, 3, *m_smallu );
    x += m_smallu->width()+1;
    index++;
  }
  else if (str[0] == 'n')
  {
    p->drawPixmap( x, 0, *m_smalln );
    x += m_smalln->width()+1;
    index++;
  }
  
  if (str.mid(index) == "Ohm")
  {
    p->drawPixmap( x, 0, *m_smallOhm );
  }
  else if (str.mid(index) == "C")
  {
    p->drawPixmap( x, 0, *m_smallDeg );
  }
  else if (str.mid(index) == "Hz")
  {
    p->drawPixmap( x, 0, *m_smallHz );
  }
  else if (str.mid(index) == "F")
  {
    p->drawPixmap( x, 0, *m_smallF );
  }
  else if (str.mid(index) == "H")
  {
    p->drawPixmap( x, 0, *m_smallH );
  }
  else if (str.mid(index) == "W")
  {
    p->drawPixmap( x, 0, *m_smallW );
  }
  else if (str.mid(index) == "dBm")
  {
    p->drawPixmap( x, 0, *m_smallDBM );
  }
  else if (str.mid(index) == "A")
  {
    p->drawPixmap( x, 0, *m_smallA );
  }
  else if (str.mid(index) == "V")
  {
    p->drawPixmap( x, 0, *m_smallV );
  }
  else if (str.mid(index) == "%")
  {
    p->drawPixmap( x, 0, *m_smallPercent );
  }
}

void
DisplayWid::drawBigNumber( QPainter *p, const QString & num )
{
  int x = 0;  
  int offset = ((m_displayMode > 1) && (m_displayMode != 8) ? 0 : 1);
  bool comma = false;
          
  if (num[offset] == '-')
  {
    p->drawPixmap( x, 0, *m_bigMinus );
  }
  
  x += 28;
    
  for (unsigned i=1+offset; i<num.length(); i++)
  {
    if (num[i] == '.')
    {
      p->drawPixmap( x-11, 0, *m_bigDecimal );
      comma = true;
    }
    else if (num[i].lower() == 'a')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*0, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'b')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*1, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'd')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*2, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'e')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*3, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'h')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*4, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'l')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*5, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'n')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*6, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'o')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*7, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'p')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*8, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'r')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*9, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 's')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*10, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 't')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*11, 0, 34, 60 );
      x += 49;
    }
    else if (num[i].lower() == 'y')
    {
      p->drawPixmap( x+2, 2, *m_bigSpecialChar, 34*12, 0, 34, 60 );
      x += 49;
    }
    else if (num[i] == ' ')
    {
      x += 49;
    }
    else
    {
      int digit = num[i].latin1()-'0';
      
      if (digit >= 0 && digit <= 9)
      {
        p->drawPixmap( x+2, 2, *m_bigDigit, 34*digit, 0, 34, 60 );
      }
      x += 49;
    }
  }
}

int
DisplayWid::calcNumDigits( int dm )
{
  int numDigits = 0;
  
  switch (dm)
  {
    default:
    case 0:
    case 1:
    case 8:
      numDigits = 4;
      break;
    case 2:
    case 3:
    case 4:
      numDigits = 5;
      break;
    case 5:
    case 6:
    case 7:
      numDigits = 6;
      break;
  }
  
  return numDigits;
}

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