lib/MLIB/Graph/external/jpgraph/src/utils/misc/mkgrad.php

   1 <?php
   2 //=======================================================================
   3 // File:        MKGRAD.PHP
   4 // Description: Simple tool to create a gradient background
   5 // Created:     2002-08-09
   6 // Author:      Johan Persson (johanp@aditus.nu)
   7 // Ver:         $Id: mkgrad.php,v 1.1 2002/08/09 23:09:12 aditus Exp $
   8 //
   9 // License:     QPL 1.0
  10 // Copyright (C) 2002 Johan Persson
  11 //=======================================================================
  12
  13
  14 // This includes a lot of unecessary things as well...
  15 include "../../jpgraph.php";
  16 include "../../jpgraph_bar.php";
  17 include "../../jpgraph_canvas.php";
  18
  19
  20 // Must have a global comparison method for usort()
  21 function _cmp($a,$b) {
  22     return strcmp($a,$b);
  23 }
  24
  25
  26 // Generate the input form
  27 class Form {
  28     var $iColors;
  29     var $iGradstyles;
  30     function Form() {
  31
  32         $rgb = new RGB();
  33         $this->iColors = array_keys($rgb->rgb_table);
  34         usort($this->iColors,'_cmp');
  35
  36         $this->iGradstyles = array(
  37             "Vertical",2,
  38             "Horizontal",1,
  39             "Vertical from middle",3,
  40             "Horizontal from middle",4,
  41             "Horizontal wider middle",6,
  42             "Vertical wider middle",7,
  43             "Rectangle",5 );
  44     }
  45
  46     function Run() {
  47
  48         echo '<h3>Generate gradient background</h3>';
  49         echo '<form METHOD=POST action=""><table style="border:blue solid 1;">';
  50         echo '<tr><td>Width:<br>'.$this->GenHTMLInput('w',8,4,300).'</td>';
  51         echo "\n";
  52         echo '<td>Height:<br>'.$this->GenHTMLInput('h',8,4,300).'</td></tr>';
  53         echo "\n";
  54         echo '<tr><td>From Color:<br>';
  55         echo $this->GenHTMLSelect('fc',$this->iColors);
  56         echo '</td><td>To Color:<br>';
  57         echo $this->GenHTMLSelect('tc',$this->iColors);
  58         echo '</td></tr>';
  59         echo '<tr><td colspan=2>Gradient style:<br>';
  60         echo $this->GenHTMLSelectCode('s',$this->iGradstyles);
  61         echo '</td></tr>';
  62         echo '<tr><td colspan=2>Filename: (empty to stream)<br>';
  63         echo $this->GenHTMLInput('fn',55,100);
  64         echo '</td></tr>';
  65         echo '<tr><td colspan=2 align=right>'.$this->GenHTMLSubmit('submit').'</td></tr>';
  66         echo '</table>';
  67         echo '</form>';
  68
  69     }
  70
  71     function GenHTMLSubmit($name) {
  72         return '<INPUT TYPE=submit name="ok"  value=" Ok " >';
  73     }
  74
  75
  76     function GenHTMLInput($name,$len,$maxlen=100,$val='') {
  77         return '<INPUT TYPE=TEXT NAME='.$name.' VALUE="'.$val.'" SIZE='.$len.' MAXLENGTH='.$maxlen.'>';
  78     }
  79
  80     function GenHTMLSelect($name,$option,$selected="",$size=0) {
  81         $txt="<select name=$name";
  82         if( $size > 0 )
  83             $txt .= " size=$size >";
  84         else
  85             $txt .= ">";
  86         for($i=0; $i<count($option); $i++) {
  87             if( $selected==$option[$i] )
  88                 $txt=$txt."<option selected value=\"$option[$i]\">$option[$i]</option>\n";
  89             else
  90                 $txt=$txt."<option value=\"".$option[$i]."\">$option[$i]</option>\n";
  91         }
  92         return $txt."</select>\n";
  93     }
  94
  95     function GenHTMLSelectCode($name,$option,$selected="",$size=0) {
  96         $txt="<select name=$name";
  97         if( $size > 0 )
  98             $txt .= " size=$size >";
  99         else
 100             $txt .= ">";
 101         for($i=0; $i<count($option); $i += 2) {
 102             if( $selected==$option[($i+1)] )
 103                 $txt=$txt."<option selected value=".$option[($i+1)].">$option[$i]</option>\n";
 104             else
 105                 $txt=$txt."<option value=\"".$option[($i+1)]."\">$option[$i]</option>\n";
 106         }
 107         return $txt."</select>\n";
 108     }
 109
 110 }
 111
 112 // Basic application driver
 113
 114 class Driver {
 115     var $iGraph, $iGrad;
 116     var $iWidth,$iHeight;
 117     var $iFromColor, $iToColor;
 118     var $iStyle;
 119     var $iForm;
 120
 121     function Driver() {
 122         $this->iForm = new Form();
 123     }
 124
 125     function GenGradImage() {
 126
 127         global $HTTP_POST_VARS;
 128
 129         $aWidth  = (int)@$HTTP_POST_VARS['w'];
 130         $aHeight = (int)@$HTTP_POST_VARS['h'];
 131         $aFrom   = @$HTTP_POST_VARS['fc'];
 132         $aTo     = @$HTTP_POST_VARS['tc'];
 133         $aStyle  = @$HTTP_POST_VARS['s'];
 134         $aFileName  = @$HTTP_POST_VARS['fn'];
 135
 136
 137         if( $aFrom=='' || $aTo=='' || $aWidth < 1 || $aHeight < 1 )
 138             exit("Syntax: mkgrad?w=nnn&h=nnn&fc=fromColor&tc=toColor&s=n");
 139
 140         $this->iWidth     = $aWidth;
 141         $this->iHeight    = $aHeight;
 142         $this->iFromColor = $aFrom;
 143         $this->iToColor   = $aTo;
 144         $this->iStyle     = $aStyle;
 145
 146         $this->graph = new CanvasGraph($aWidth,$aHeight);
 147         $this->grad  = new Gradient($this->graph->img);
 148         $this->grad->FilledRectangle(0,0,
 149                                      $this->iWidth,$this->iHeight,
 150                                      $this->iFromColor,
 151                                      $this->iToColor,
 152                                      $this->iStyle);
 153
 154         if( $aFileName != "" ) {
 155             $this->graph->Stroke($aFileName);
 156             echo "Image file '$aFileName' created.";
 157         }
 158         else
 159             $this->graph->Stroke();
 160     }
 161
 162
 163     function Run() {
 164
 165         global $HTTP_POST_VARS;
 166
 167         // Two modes:
 168         // 1) If the script is called with no posted arguments
 169         // we show the input form.
 170         // 2) If we have posted arguments we naivly assume that
 171         // we are called to do the image.
 172
 173         if( @$HTTP_POST_VARS['ok']===' Ok ' ) {
 174             $this->GenGradImage();
 175         }
 176         else
 177             $this->iForm->Run();
 178     }
 179 }
 180
 181 $driver = new Driver();
 182 $driver->Run();
 183
 184 ?>