cpdf_adapter.cls.php

来自「国外很不错的一个开源OA系统Group-Office」· PHP 代码 · 共 774 行 · 第 1/2 页

   * Sets the fill colour
   *
   * See {@link Style::set_colour()} for the format of the colour array.
   * @param array $color
   */
  protected function _set_fill_color($color) {
    list($r, $g, $b) = $color;      
    $this->_pdf->setColor($r, $g, $b);
  }

  /**
   * Sets line transparency
   * @see Cpdf::setLineTransparency()
   *
   * Valid blend modes are (case-sensitive):
   *
   * Normal, Multiply, Screen, Overlay, Darken, Lighten,
   * ColorDodge, ColorBurn, HardLight, SoftLight, Difference,
   * Exclusion
   *
   * @param string $mode the blending mode to use
   * @param float $opacity 0.0 fully transparent, 1.0 fully opaque
   */
  protected function _set_line_transparency($mode, $opacity) {
    $this->_pdf->setLineTransparency($mode, $opacity);
  }
  
  /**
   * Sets fill transparency
   * @see Cpdf::setFillTransparency()
   *
   * Valid blend modes are (case-sensitive):
   *
   * Normal, Multiply, Screen, Overlay, Darken, Lighten,
   * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
   * Exclusion
   *
   * @param string $mode the blending mode to use
   * @param float $opacity 0.0 fully transparent, 1.0 fully opaque
   */
  protected function _set_fill_transparency($mode, $opacity) {
    $this->_pdf->setFillTransparency($mode, $opacity);
  }

  /**
   * Sets the line style
   *
   * @see Cpdf::setLineStyle()
   *
   * @param float width
   * @param string cap
   * @param string join
   * @param array dash
   */
  protected function _set_line_style($width, $cap, $join, $dash) {
    $this->_pdf->setLineStyle($width, $cap, $join, $dash);
  }
  
  //........................................................................

  
  /**
   * Remaps y coords from 4th to 1st quadrant
   *
   * @param float $y
   * @return float
   */
  protected function y($y) { return $this->_height - $y; }

  // Canvas implementation

  function line($x1, $y1, $x2, $y2, $color, $width, $style = array(),
                $blend = "Normal", $opacity = 1.0) {
    //pre_r(compact("x1", "y1", "x2", "y2", "color", "width", "style"));

    $this->_set_stroke_color($color);
    $this->_set_line_style($width, "butt", "", $style);
    $this->_set_line_transparency($blend, $opacity);
    
    $this->_pdf->line($x1, $this->y($y1),
                      $x2, $this->y($y2));
  }
                              
  //........................................................................

  /**
   * Convert a GIF image to a PNG image
   *
   * @return string The url of the newly converted image 
   */
  protected function _convert_gif_to_png($image_url) {
    global $_dompdf_warnings;
    
    if ( !function_exists("imagecreatefromgif") ) {
      $_dompdf_warnings[] = "Function imagecreatefromgif() not found.  Cannot convert gif image: $image_url.";      
      return DOMPDF_LIB_DIR . "/res/broken_image.png";
    }

    $old_err = set_error_handler("record_warnings");
    $im = imagecreatefromgif($image_url);

    if ( $im ) {
      imageinterlace($im, 0);
    
      $filename = tempnam(DOMPDF_TEMP_DIR, "dompdf_img_");
      imagepng($im, $filename);

    } else {
      $filename = DOMPDF_LIB_DIR . "/res/broken_image.png";

    }

    restore_error_handler();

    $this->_image_cache[] = $filename;
    
    return $filename;
    
  }

  function rectangle($x1, $y1, $w, $h, $color, $width, $style = array(),
                     $blend = "Normal", $opacity = 1.0) {

    $this->_set_stroke_color($color);
    $this->_set_line_style($width, "square", "miter", $style);
    $this->_set_line_transparency($blend, $opacity);
    
    $this->_pdf->rectangle($x1, $this->y($y1) - $h, $w, $h);
  }

  //........................................................................
  
  function filled_rectangle($x1, $y1, $w, $h, $color, $blend = "Normal", $opacity = 1.0) {

    $this->_set_fill_color($color);
    $this->_set_line_style(1, "square", "miter", array());
    $this->_set_line_transparency($blend, $opacity);
    $this->_set_fill_transparency($blend, $opacity);
    
    $this->_pdf->filledRectangle($x1, $this->y($y1) - $h, $w, $h);
  }

  //........................................................................

  function polygon($points, $color, $width = null, $style = array(),
                   $fill = false, $blend = "Normal", $opacity = 1.0) {

    $this->_set_fill_color($color);
    $this->_set_stroke_color($color);

    $this->_set_line_transparency($blend, $opacity);
    $this->_set_fill_transparency($blend, $opacity);
    
    if ( !$fill && isset($width) )
      $this->_set_line_style($width, "square", "miter", $style);
    
    // Adjust y values
    for ( $i = 1; $i < count($points); $i += 2)
      $points[$i] = $this->y($points[$i]);
    
    $this->_pdf->polygon($points, count($points) / 2, $fill);
  }

  //........................................................................

  function circle($x, $y, $r1, $color, $width = null, $style = null,
                  $fill = false, $blend = "Normal", $opacity = 1.0) {

    $this->_set_fill_color($color);
    $this->_set_stroke_color($color);
    
    $this->_set_line_transparency($blend, $opacity);
    $this->_set_fill_transparency($blend, $opacity);

    if ( !$fill && isset($width) )
      $this->_set_line_style($width, "round", "round", $style);

    $this->_pdf->filledEllipse($x, $this->y($y), $r1, 0, 0, 8, 0, 360, 1, $fill);

  }
  
  //........................................................................

  function image($img_url, $img_type, $x, $y, $w, $h) {

    $img_type = mb_strtolower($img_type);
    
    switch ($img_type) {
    case "jpeg":
    case "jpg":
      $this->_pdf->addJpegFromFile($img_url, $x, $this->y($y) - $h, $w, $h);
      break;

    case "png":
      $this->_pdf->addPngFromFile($img_url, $x, $this->y($y) - $h, $w, $h);
      break;

    case "gif":
      // Convert gifs to pngs
      $img_url = $this->_convert_gif_to_png($img_url);
      $this->_pdf->addPngFromFile($img_url, $x, $this->y($y) - $h, $w, $h);
      break;
      
    default:      
      break;
    }
    
    return;
  }

  //........................................................................

  function text($x, $y, $text, $font, $size, $color = array(0,0,0),
                $adjust = 0, $angle = 0, $blend = "Normal", $opacity = 1.0) {

    list($r, $g, $b) = $color;
    $this->_pdf->setColor($r, $g, $b);

    $this->_set_line_transparency($blend, $opacity);
    $this->_set_fill_transparency($blend, $opacity);
    $font .= ".afm";
    
    $this->_pdf->selectFont($font);
    $this->_pdf->addText($x, $this->y($y) - Font_Metrics::get_font_height($font, $size), $size, utf8_decode($text), $angle, $adjust);

  }

  //........................................................................

  /**
   * 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) {
    $this->_pdf->addDestination($anchorname,"Fit");
  }

  //........................................................................

  /**
   * 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) {

    $y = $this->y($y) - $height;

    if ( strpos($url, '#') === 0 ) {
      // Local link
      $name = substr($url,1);
      if ( $name )
        $this->_pdf->addInternalLink($name, $x, $y, $x + $width, $y + $height);

    } else {
      $this->_pdf->addLink(rawurldecode($url), $x, $y, $x + $width, $y + $height);
    }
    
  }

  //........................................................................

  function get_text_width($text, $font, $size, $spacing = 0) {
    $this->_pdf->selectFont($font);
    return $this->_pdf->getTextWidth($size, utf8_decode($text), $spacing);
  }

  //........................................................................

  function get_font_height($font, $size) {
    $this->_pdf->selectFont($font);
    return $this->_pdf->getFontHeight($size);
  }

  /**
   * Writes text at the specified x and y coordinates on every page
   *
   * The strings '{PAGE_NUM}' and '{PAGE_COUNT}' are automatically replaced
   * with their current values.
   *
   * See {@link Style::munge_colour()} for the format of the colour 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
   * @param float $angle angle to write the text at, measured CW starting from the x-axis
   */
  function page_text($x, $y, $text, $font, $size, $color = array(0,0,0),
                     $adjust = 0, $angle = 0,  $blend = "Normal", $opacity = 1.0) {
    
    $this->_page_text[] = compact("x", "y", "text", "font", "size", "color", "adjust", "angle");
  }
  
  //........................................................................

  function new_page() {
    $this->_page_count++;

    $ret = $this->_pdf->newPage();
    $this->_pages[] = $ret;
    return $ret;
  }
  
  //........................................................................

  /**
   * Add text to each page after rendering is complete
   */
  protected function _add_page_text() {
    
    if ( !count($this->_page_text) )
      return;

    $page_number = 1;

    foreach ($this->_pages as $pid) {

      foreach ($this->_page_text as $pt) {
        extract($pt);

        $text = str_replace(array("{PAGE_NUM}","{PAGE_COUNT}"),
                            array($page_number, $this->_page_count), $text);

        $this->reopen_object($pid);        
        $this->text($x, $y, $text, $font, $size, $color, $adjust, $angle);
        $this->close_object();        
      }

      $page_number++;
      
    }
  }
  
  /**
   * Streams the PDF directly to the browser
   *
   * @param string $filename the name of the PDF file
   * @param array  $options associative array, 'Attachment' => 0 or 1, 'compress' => 1 or 0
   */
  function stream($filename, $options = null) {
    // Add page text
    $this->_add_page_text();
    
    $options["Content-Disposition"] = $filename;
    $this->_pdf->stream($options);
  }

  //........................................................................

  /**
   * Returns the PDF as a string
   *
   * @return string
   */
  function output($options = null) {
    // Add page text
    $this->_add_page_text();

    if ( isset($options["compress"]) && $options["compress"] != 1 )
      $debug = 1;
    else
      $debug = 0;
    
    return $this->_pdf->output($debug);
    
  }
  
  //........................................................................

  /**
   * Returns logging messages generated by the Cpdf class
   *
   * @return string
   */
  function get_messages() { return $this->_pdf->messages; }
  
}