Displays a chart by placing in the page HTML, a <svg> tag. Returns: None

Declared in file: hzDissemino.h
Defined in file : hdsGenerate.cpp

Function Logic:

Function body:

void hdsChartBar::Generate (hzChain& Z)hzHttpEvent* pE, uint32_t& nLine, 
{
   //  Category: HTML Generation
   //  
   //  Displays a chart by placing in the page HTML, a <svg> tag.
   //  
   //  Arguments: 1) Z  The HTML output chain
   //     2) pE  The HTTP event being responded to
   //     3) nLine Line number tracker (controls NL printing)
   //  
   //  Returns: None
   _hzfunc("hdsChartBar::Generate") ;
   hzList<_rset*>::Iter    ri ;    //  Dataset iterator
   _rset*      pSet ;              //  Dataset
                                   //  double  per_pixel_X ;  // For ploting x
   double      per_pixel_Y ;       //  For ploting y
   double      stepSize ;          //  Axis value per step
   uint32_t    val ;               //  Current value
   uint32_t    X ;                 //  Current horizontal coord
   uint32_t    Y ;                 //  Current vertical coord
   uint16_t    axisPixelsX ;       //  Total pixels on X-axis
   uint16_t    axisPixelsY ;       //  Total pixels on Y-axis
   uint32_t    n ;                 //  Loop iterator
   /*
   **  ** Start draw instrutions
   **      */
   Z.Printf("<svg id=\"%s\" height=\"%d\" width=\"%d\" style=\"border:1px solid #000000; background:#%06x;\">", *m_Id, m_Height, m_Width, m_BgColor) ;
   //  Draw header and footer if applicable
   if (m_Header)
       _hds_svg_drawText(Z, m_Header, m_Width/2,20,m_FgColor,1);
   //  Calculate pixels
   axisPixelsX = m_nSlotsX * m_nPxSlotX ;
   axisPixelsY = m_nSlotsY * m_nPxSlotY ;
   //  per_pixel_X = (m_nMaxX - m_nMinX)/axisPixelsX ;
   per_pixel_Y = (m_nMaxY - m_nMinY)/axisPixelsY ;
   //  Draw vertical and horizontal axis
   Z.Printf("<line x1=\"%u\" y1=\"%u\" x2=\"%u\" y2=\"%u\" style=\"stroke:#%06x;stroke-width:1\"/>\n", m_origX, m_origY - axisPixelsY, m_origX, m_origY, m_FgColor) ;
   Z.Printf("<line x1=\"%u\" y1=\"%u\" x2=\"%u\" y2=\"%u\" style=\"stroke:#%06x;stroke-width:1\"/>\n", m_origX, m_origY, m_origX + axisPixelsX, m_origY, m_FgColor) ;
   //  Draw out vertical axis heading and markers
   Y = 30;
   X = 20;
   Z.Printf("<text x=\"%u\" y=\"%u\" fill=\"#%06x\">%s</text>\n", X, Y, m_FgColor, *m_HdrY) ;
   stepSize = (m_nMaxY - m_nMinY)/m_nSlotsY ;
   Y = m_origY ;
   for (val = m_nMinY ; val <&eq; m_nMaxY ; val += stepSize)
   {
       Z.Printf("<text x=\"%u\" y=\"%u\" fill=\"#%06x\">%u</text>\n", X, Y, m_FgColor, (uint32_t) val) ;
       Y -= m_nPxSlotY ;
   }
   //  Draw out horizontal axis heading and markers
   stepSize = (m_nMaxX - m_nMinX)/m_nSlotsX ;
   Y = m_origY + 20;
   X = m_origX ;
   for (val = m_nMinX ; val <&eq; m_nMaxX ; val += stepSize)
   {
       Z.Printf("<text x=\"%u\" y=\"%u\" fill=\"#%06x\">%u</text>\n", X, Y, m_FgColor, (uint32_t) val) ;
       X += m_nPxSlotX ;
   }
   //  Plot values
   for (n = 0; n <&eq; m_nSlotsX ; n++)
   {
       Y = m_origY ;
       X = m_origX + (n * m_nPxSlotX) + 1;
       for (ri = m_Sets ; ri.Valid() ; ri++)
       {
           pSet = ri.Element() ;
           val = ((pSet->m_vVals[n] - m_nMinY) * per_pixel_Y) ;
           Z.Printf("<rect x=\"%u\" y=\"%u\" width=\"%u\" height=\"%u\" style=\"fill:#%06x;\"/>\n", X, Y - val, (uint32_t)m_nPxSlotX - 1,val, pSet->color) ;
           Y -= val ;
       }
   }
   //  Do the component index if applicable
   Y = m_origY + 40;
   if (m_Sets.Count() > 1)
   {
       X = m_origX ;
       for (ri = m_Sets ; ri.Valid() ; ri++)
       {
           pSet = ri.Element() ;
           Z.Printf("<rect x=\"%u\" y=\"%u\" width=\"%u\" height=\"%u\" style=\"fill:#%06x;\"/>\n", X, Y, 12,12,pSet->color);
           Z.Printf("<text x=\"%u\" y=\"%u\" fill=\"#%06x\">%s</text>\n", X+15,Y+15,m_FgColor,*pSet->header);
           X += 10*(pSet->header.Length()) ;
       }
       Y += 20;
   }
   if (m_Footer)
       _hds_svg_drawText(Z, m_Footer, m_Width/2,Y, m_FgColor, 1);
   Z
   << "Your Browser does not support the HTML5 SVG tag\n</svg>\n"
              ;
}