[Sommaire] [Imprimer]

   1  <?php
   2  
   3  /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
   4  
   5  /**
   6   * Image_Graph - Main class for the graph creation.
   7   *
   8   * PHP versions 4 and 5
   9   *
  10   * LICENSE: This library is free software; you can redistribute it and/or modify
  11   * it under the terms of the GNU Lesser General Public License as published by
  12   * the Free Software Foundation; either version 2.1 of the License, or (at your
  13   * option) any later version. This library is distributed in the hope that it
  14   * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
  16   * General Public License for more details. You should have received a copy of
  17   * the GNU Lesser General Public License along with this library; if not, write
  18   * to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19   * 02111-1307 USA
  20   *
  21   * @category   Images
  22   * @package    Image_Graph
  23   * @subpackage Text
  24   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  25   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  26   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  27   * @version    CVS: $Id: Title.php,v 1.12 2005/08/24 20:35:56 nosey Exp $
  28   * @link       http://pear.php.net/package/Image_Graph
  29   */
  30  
  31  /**
  32   * Include file Image/Graph/Layout.php
  33   */
  34  require_once  'Image/Graph/Layout.php';
  35  
  36  /**
  37   * Title
  38   * 
  39   * @category   Images
  40   * @package    Image_Graph
  41   * @subpackage Text
  42   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  43   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  44   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  45   * @version    Release: 0.7.2
  46   * @link       http://pear.php.net/package/Image_Graph
  47   */
  48  class Image_Graph_Title extends Image_Graph_Layout
  49  {
  50  
  51      /**
  52       * The text to print
  53       * @var string
  54       * @access private
  55       */
  56      var $_text;
  57  
  58      /**
  59       * The font to use
  60       * @var Font
  61       * @access private
  62       */
  63      var $_font;
  64  
  65      /**
  66       * The alignment of the title
  67       * @var int
  68       * @access private
  69       */
  70      var $_alignment = IMAGE_GRAPH_ALIGN_CENTER_X;
  71  
  72      /**
  73       * Create the title.
  74       *
  75       * Pass a Image_Graph_Font object - preferably by-ref (&amp;) as second
  76       * parameter, the font size in pixels or an associated array with some or
  77       * all of the followin keys:
  78       *
  79       * 'size' The size of the title
  80       *
  81       * 'angle' The angle at which to write the title (in degrees or 'vertical')
  82       *
  83       * 'color' The font-face color
  84       *
  85       * @param sting $text The text to represent the title
  86       * @param mixed $fontOptions The font to use in the title
  87       */
  88      function Image_Graph_Title($text, $fontOptions = false)
  89      {
  90          parent::Image_Graph_Layout();
  91          if (is_object($fontOptions)) {
  92              $this->_font =& $fontOptions;
  93          } else {
  94              if (is_array($fontOptions)) {
  95                  $this->_fontOptions = $fontOptions;
  96              } else {
  97                  $this->_fontOptions['size'] = $fontOptions;
  98              }
  99          }
 100          $this->setText($text);
 101      }
 102  
 103      /**
 104       * Set the text
 105       *
 106       * @param string $text The text to display
 107       */
 108      function setText($text)
 109      {
 110          $this->_text = $text;
 111      }
 112  
 113      /**
 114       * Returns the calculated "auto" size
 115       *
 116       * @return int The calculated auto size
 117       * @access private
 118       */
 119      function _getAutoSize()
 120      {
 121          if ($this->_defaultFontOptions !== false) {
 122              $this->_canvas->setFont($this->_defaultFontOptions);
 123          } else {        
 124              $this->_canvas->setFont($this->_getFont());
 125          }
 126  
 127          return $this->_canvas->textHeight($this->_text);
 128      }
 129  
 130      /**
 131       * Set the alignment of the legend
 132       *
 133       * @param int $alignment The alignment
 134       */
 135      function setAlignment($alignment)
 136      {
 137          $this->_alignment = $alignment & 0x7;
 138      }
 139      
 140      /**
 141       * Output the text
 142       *
 143       * @return bool Was the output 'good' (true) or 'bad' (false).
 144       * @access private
 145       */
 146      function _done()
 147      {
 148          if ($this->_defaultFontOptions !== false) {
 149              $this->_canvas->setFont($this->_defaultFontOptions);
 150          } else {        
 151              $this->_canvas->setFont($this->_getFont());
 152          }
 153  
 154          if (is_a($this->_parent, 'Image_Graph_Plotarea')) {            
 155              $this->_setCoords(
 156                  $this->_parent->_left,
 157                  $this->_parent->_top,
 158                  $this->_parent->_right,
 159                  $this->_parent->_top + $this->_canvas->textHeight($this->_text)
 160              );
 161          } elseif (!is_a($this->_parent, 'Image_Graph_Layout')) {
 162              $this->_setCoords(
 163                  $this->_parent->_fillLeft(),
 164                  $this->_parent->_fillTop(),
 165                  $this->_parent->_fillRight(),
 166                  $this->_parent->_fillTop() + $this->_canvas->textHeight($this->_text)
 167              );
 168          }
 169  
 170          if (parent::_done() === false) {
 171              return false;
 172          }
 173              
 174          if ($this->_alignment == IMAGE_GRAPH_ALIGN_CENTER_X) {
 175              $x = ($this->_left + $this->_right) / 2;
 176          } elseif ($this->_alignment == IMAGE_GRAPH_ALIGN_LEFT) {
 177              $x = $this->_left;
 178          } else {
 179              $x = $this->_right;
 180          }
 181          $y = ($this->_top + $this->_bottom) / 2;
 182  
 183          $this->write(
 184              $x,
 185              $y,
 186              $this->_text,
 187              $this->_alignment + IMAGE_GRAPH_ALIGN_CENTER_Y
 188          );
 189          return true;
 190      }
 191  
 192  }
 193  
 194  ?>