gd_adapter.cls.php

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    $h *= $this->_aa_factor;

    $c = $this->_allocate_color($color);

    imagefilledrectangle($this->_img, $x1, $y1, $x1 + $w, $y1 + $h, $c);

  }

  /**
   * Draws a polygon
   *
   * The polygon is formed by joining all the points stored in the $points
   * array.  $points has the following structure:
   * <code>
   * array(0 => x1,
   *       1 => y1,
   *       2 => x2,
   *       3 => y2,
   *       ...
   *       );
   * </code>
   *
   * See {@link Style::munge_color()} for the format of the color array.
   * See {@link Cpdf::setLineStyle()} for a description of the $style
   * parameter (aka dash)   
   *
   * @param array $points
   * @param array $color
   * @param float $width
   * @param array $style
   * @param bool  $fill  Fills the polygon if true
   */
  function polygon($points, $color, $width = null, $style = null, $fill = false) {

    // Scale each point by the AA factor
    foreach (array_keys($points) as $i)
      $points[$i] *= $this->_aa_factor;

    $c = $this->_allocate_color($color);

    // Convert the style array if required
    if ( !is_null($style) && !$fill ) {
      $gd_style = array();

      foreach ($style as $length) {
        for ($i = 0; $i < $length; $i++) {
          $gd_style[] = $c;
        }
      }

      imagesetstyle($this->_img, $gd_style);
      $c = IMG_COLOR_STYLED;
    }

    imagesetthickness($this->_img, $width);

    if ( $fill ) 
      imagefilledpolygon($this->_img, $points, count($points) / 2, $c);
    else
      imagepolygon($this->_img, $points, count($points) / 2, $c);
        
  }

  /**
   * Draws a circle at $x,$y with radius $r
   *
   * See {@link Style::munge_color()} for the format of the color array.
   * See {@link Cpdf::setLineStyle()} for a description of the $style
   * parameter (aka dash)
   *
   * @param float $x
   * @param float $y
   * @param float $r
   * @param array $color
   * @param float $width
   * @param array $style
   * @param bool $fill Fills the circle if true   
   */   
  function circle($x, $y, $r, $color, $width = null, $style = null, $fill = false) {

    // Scale by the AA factor
    $x *= $this->_aa_factor;
    $y *= $this->_aa_factor;
    $r *= $this->_aa_factor;

    $c = $this->_allocate_color($color);

    // Convert the style array if required
    if ( !is_null($style) && !$fill ) {
      $gd_style = array();

      foreach ($style as $length) {
        for ($i = 0; $i < $length; $i++) {
          $gd_style[] = $c;
        }
      }

      imagesetstyle($this->_img, $gd_style);
      $c = IMG_COLOR_STYLED;
    }

    imagesetthickness($this->_img, $width);

    if ( $fill )
      imagefilledellipse($this->_img, $x, $y, $r, $r, $c);
    else
      imageellipse($this->_img, $x, $y, $r, $r, $c);
        
  }

  /**
   * Add an image to the pdf.
   *
   * The image is placed at the specified x and y coordinates with the
   * given width and height.
   *
   * @param string $img_url the path to the image
   * @param string $img_type the type (e.g. extension) of the image
   * @param float $x x position
   * @param float $y y position
   * @param int $w width (in pixels)
   * @param int $h height (in pixels)
   */
  function image($img_url, $img_type, $x, $y, $w, $h) {

    switch ($img_type) {
    case "png":
      $src = @imagecreatefrompng($img_url);
      break;
      
    case "gif":
      $src = @imagecreatefromgif($img_url);
      break;
      
    case "jpg":
    case "jpeg":
      $src = @imagecreatefromjpeg($img_url);
      break;

    default:
      break;
      
    }

    if ( !$src )
      return; // Probably should add to $_dompdf_errors or whatever here
    
    // Scale by the AA factor
    $x *= $this->_aa_factor;
    $y *= $this->_aa_factor;

    $w *= $this->_aa_factor;
    $h *= $this->_aa_factor;
    
    $img_w = imagesx($src);
    $img_h = imagesy($src);

    
    imagecopyresampled($this->_img, $src, $x, $y, 0, 0, $w, $h, $img_w, $img_h);
    
  }

  /**
   * Writes text at the specified x and y coordinates
   *
   * See {@link Style::munge_color()} for the format of the color array.
   *
   * @param float $x
   * @param float $y
   * @param string $text the text to write
   * @param string $font the font file to use
   * @param float $size the font size, in points
   * @param array $color
   * @param float $adjust word spacing adjustment
   */
  function text($x, $y, $text, $font, $size, $color = array(0,0,0), $adjust = 0) {

    // Scale by the AA factor
    $x *= $this->_aa_factor;
    $y *= $this->_aa_factor;
    $size *= $this->_aa_factor;
    
    $h = $this->get_font_height($font, $size);
    
    $c = $this->_allocate_color($color);

    if ( strpos($font, '.ttf') === false )
      $font .= ".ttf";

    // FIXME: word spacing
    imagettftext($this->_img, $size, 0, $x, $y + $h, $c, $font, $text);
    
  }

  /**
   * Add a named destination (similar to <a name="foo">...</a> in html)
   *
   * @param string $anchorname The name of the named destination
   */
  function add_named_dest($anchorname) {
    // Not implemented
  }

  /**
   * Add a link to the pdf
   *
   * @param string $url The url to link to
   * @param float  $x   The x position of the link
   * @param float  $y   The y position of the link
   * @param float  $width   The width of the link
   * @param float  $height   The height of the link
   */
  function add_link($url, $x, $y, $width, $height) {
    // Not implemented
  }

  /**
   * Calculates text size, in points
   *
   * @param string $text the text to be sized
   * @param string $font the desired font
   * @param float  $size the desired font size
   * @param float  $spacing word spacing, if any
   * @return float
   */
  function get_text_width($text, $font, $size, $spacing = 0) {    

    if ( strpos($font, '.ttf') === false )
      $font .= ".ttf";

    // FIXME: word spacing
    list($x1,,$x2) = imagettfbbox($size, 0, $font, $text);
    return $x2 - $x1;
  }

  /**
   * Calculates font height, in points
   *
   * @param string $font
   * @param float $size
   * @return float
   */
  function get_font_height($font, $size) {
    if ( strpos($font, '.ttf') === false )
      $font .= ".ttf";

    // FIXME: word spacing
    list(,$y2,,,,$y1) = imagettfbbox($size, 0, $font, "MXjpqytfhl");  // Test string with ascenders, descenders and caps
    return $y2 - $y1;
  }

  
  /**
   * Starts a new page
   *
   * Subsequent drawing operations will appear on the new page.
   */
  function new_page() {
    // FIXME
  }    

  /**
   * Streams the image directly to the browser
   *
   * @param string $filename the name of the image file (ignored)
   * @param array  $options associative array, 'type' => jpeg|jpg|png, 'quality' => 0 - 100 (jpeg only)
   */
  function stream($filename, $options = null) {

    // Perform any antialiasing
    if ( $this->_aa_factor != 1 ) {
      $dst_w = $this->_width / $this->_aa_factor;
      $dst_h = $this->_height / $this->_aa_factor;
      $dst = imagecreatetruecolor($dst_w, $dst_h);
      imagecopyresampled($dst, $this->_img, 0, 0, 0, 0,
                         $dst_w, $dst_h,
                         $this->_width, $this->_height);
    } else {
      $dst = $this->_img;
    }

    if ( !isset($options["type"]) )
      $options["type"] = "png";

    $type = strtolower($options["type"]);
    
    header("Cache-Control: private");
    
    switch ($type) {

    case "jpg":
    case "jpeg":
      if ( !isset($options["quality"]) )
        $options["quality"] = 75;
      
      header("Content-type: image/jpeg");
      imagejpeg($dst, '', $options["quality"]);
      break;

    case "png":
    default:
      header("Content-type: image/png");
      imagepng($dst);
      break;
    }

    if ( $this->_aa_factor != 1 ) 
      imagedestroy($dst);
  }

  /**
   * Returns the PNG as a string
   *
   * @param array  $options associative array, 'type' => jpeg|jpg|png, 'quality' => 0 - 100 (jpeg only)
   * @return string
   */
  function output($options = null) {

    if ( $this->_aa_factor != 1 ) {
      $dst_w = $this->_width / $this->_aa_factor;
      $dst_h = $this->_height / $this->_aa_factor;
      $dst = imagecreatetruecolor($dst_w, $dst_h);
      imagecopyresampled($dst, $this->_img, 0, 0, 0, 0,
                         $dst_w, $dst_h,
                         $this->_width, $this->_height);
    } else {
      $dst = $this->_img;
    }
    
    if ( !isset($options["type"]) )
      $options["type"] = "png";

    $type = $options["type"];
    
    ob_start();

    switch ($type) {

    case "jpg":
    case "jpeg":
      if ( !isset($options["quality"]) )
        $options["quality"] = 75;
      
      imagejpeg($dst, '', $options["quality"]);
      break;

    case "png":
    default:
      imagepng($dst);
      break;
    }

    $image = ob_get_contents();
    ob_end_clean();

    if ( $this->_aa_factor != 1 )
      imagedestroy($dst);
    
    return $image;
  }
  
  
}