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   1  <?php
   2    /**************************************************************************\
   3    * eGroupWare API - Graphical                                               *
   4    * This file written by Lars Kneschke <lars@kneschke.de>                    *
   5    * Allows the creation of graphical buttons                                 *
   6    * Copyright (C) 2001 Lars Kneschke                                         *
   7    * -------------------------------------------------------------------------*
   8    * This library is part of the eGroupWare API                               *
   9    * http://www.egroupware.org/api                                            * 
  10    * ------------------------------------------------------------------------ *
  11    * This library is free software; you can redistribute it and/or modify it  *
  12    * under the terms of the GNU Lesser General Public License as published by *
  13    * the Free Software Foundation; either version 2.1 of the License,         *
  14    * or any later version.                                                    *
  15    * This library is distributed in the hope that it will be useful, but      *
  16    * WITHOUT ANY WARRANTY; without even the implied warranty of               *
  17    * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                     *
  18    * See the GNU Lesser General Public License for more details.              *
  19    * You should have received a copy of the GNU Lesser General Public License *
  20    * along with this library; if not, write to the Free Software Foundation,  *
  21    * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA            *
  22    \**************************************************************************/
  23  
  24    /* $Id: class.graphics.inc.php 16309 2004-08-09 13:20:26Z reinerj $ */
  25  
  26      class graphics
  27      {
  28          /* put a valid font here */
  29          var $font="/opt/future-project/src/management-server/ttf/arial.ttf";
  30  
  31  		function createImage($_text, $_fontsize=11)
  32          {
  33              /* create filename */
  34              $filename = 'button_' . md5($_text) . '.png';
  35              $filename = strtolower($filename);
  36  
  37              /* see if file exists already, we cache it */
  38              if (file_exists(PHPGW_IMAGES_FILEDIR.'/'.$filename))
  39              {
  40                  return $filename;
  41              }
  42  
  43              $size = imagettfbbox($_fontsize,0,$this->font,$_text);
  44              $dx = abs($size[2]-$size[0]);
  45              $dy = abs($size[5]-$size[3]);
  46              $xpad=9;
  47              $ypad=9;
  48              $im = imagecreate($dx+$xpad,$dy+$ypad);
  49              $blue = ImageColorAllocate($im, 0x2c,0x6D,0xAF);
  50              $black = ImageColorAllocate($im, 0,0,0);
  51              $white = ImageColorAllocate($im, 255,255,255);
  52              ImageRectangle($im,0,0,$dx+$xpad-1,$dy+$ypad-1,$black);
  53              ImageRectangle($im,0,0,$dx+$xpad,$dy+$ypad,$white);
  54              ImageTTFText($im, $_fontsize, 0, (int)($xpad/2)+1, $dy+(int)($ypad/2), -$black, $this->font, $_text);
  55              ImageTTFText($im, $_fontsize, 0, (int)($xpad/2), $dy+(int)($ypad/2)-1, -$white, $this->font, $_text);
  56              ImagePNG($im,PHPGW_IMAGES_FILEDIR.'/'.$filename);
  57              ImageDestroy($im);
  58  
  59              return $filename;
  60          }
  61  
  62  		function createInputButton($_text, $_name, $_mode='graphic')
  63          {
  64              if ($_mode == 'graphic' && extension_loaded('gd'))
  65              {
  66                  return '<input type="image" src="/egroupware/phpgwapi/templates/default/images/'.$this->createImage($_text).'" border="0" name="'.$_name.'">';
  67              }
  68              else
  69              {
  70                  return '<input type="submit" value="'.$_text.'" name="'.$_name.'">';
  71              }
  72          }
  73  
  74          // this function checks, if there is a variable $aaa_x and $aaa_y
  75          // if so, it will create a new variable $aaa
  76  		function parseHTTPPostVars()
  77          {
  78              // execute only if libgd support is enabled
  79              if (!extension_loaded('gd'))
  80              {
  81                  return;
  82              }
  83  
  84              global $HTTP_POST_VARS;
  85  
  86              if (is_array($HTTP_POST_VARS))
  87              {
  88                  while( list($key, $val) = each($HTTP_POST_VARS)) 
  89                  {
  90                      if (ereg("(.*)_x",$key,$varName) && $HTTP_POST_VARS[$varName[1]."_y"])
  91                      {
  92                          $name = $varName[1];
  93                          global $$name;
  94                          $$name = "content generated by parseHTTPPostVars()";
  95                      }
  96                  }
  97              }
  98          }
  99      }