pdflib_adapter.cls.php

来自「国外很不错的一个开源OA系统Group-Office」· PHP 代码 · 共 891 行 · 第 1/2 页

      break;
    }

    switch ( $cap ) {
    case "butt":
      $this->_pdf->setlinecap(0);
      break;

    case "round":
      $this->_pdf->setlinecap(1);
      break;

    case "square":
      $this->_pdf->setlinecap(2);
      break;

    default:
      break;
    }

    $this->_pdf->setlinewidth($width);

  }

  /**
   * Sets the line color
   *
   * @param array $color array(r,g,b)
   */
  protected function _set_stroke_color($color) {
    if($this->_last_stroke_color == $color)
    	return;

    $this->_last_stroke_color = $color;

    list($r,$g,$b) = $color;
    $this->_pdf->setcolor("stroke", "rgb", $r, $g, $b, 0);
  }

  /**
   * Sets the fill color
   *
   * @param array $color array(r,g,b)
   */
  protected function _set_fill_color($color) {
    if($this->_last_fill_color == $color)
    	return;

    $this->_last_fill_color = $color;

    list($r,$g,$b) = $color;
    $this->_pdf->setcolor("fill", "rgb", $r, $g, $b, 0);
  }

  /**
   * Loads a specific font and stores the corresponding descriptor.
   *
   * @param string $font
   * @return int the font descriptor for the font
   */
  protected function _load_font($font, $encoding = null, $options = "") {

    // Check if the font is a native PDF font
    // Embed non-native fonts
    $native_fonts = array("courier", "courier-bold", "courier-oblique", "courier-boldoblique",
                          "helvetica", "helvetica-bold", "helvetica-oblique", "helvetica-boldoblique",
                          "times-roman", "times-bold", "times-italic", "times-bolditalic",
                          "symbol", "zapfdinbats");

    $test = strtolower(basename($font));
    if ( in_array($test, $native_fonts) ) {
      $font = basename($font);

    } else {
      // Embed non-native fonts
      $options .= " embedding=true";
    }

    if ( is_null($encoding) ) {

      // Unicode encoding is only available for the commerical
      // version of PDFlib and not PDFlib-Lite
      if ( defined("DOMPDF_PDFLIB_LICENSE") )
        $encoding = "unicode";
      else
        $encoding = "auto";

    }

    $key = $font .":". $encoding .":". $options;

    if ( isset($this->_fonts[$key]) )
      return $this->_fonts[$key];

    else {

      $this->_fonts[$key] = $this->_pdf->load_font($font, $encoding, $options);
      return $this->_fonts[$key];

    }

  }

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

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

  function line($x1, $y1, $x2, $y2, $color, $width, $style = null) {
    $this->_set_line_style($width, "butt", "", $style);
    $this->_set_stroke_color($color);

    $y1 = $this->y($y1);
    $y2 = $this->y($y2);

    $this->_pdf->moveto($x1,$y1);
    $this->_pdf->lineto($x2, $y2);
    $this->_pdf->stroke();
  }

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

  function rectangle($x1, $y1, $w, $h, $color, $width, $style = null) {
    $this->_set_stroke_color($color);
    $this->_set_line_style($width, "square", "miter", $style);

    $y1 = $this->y($y1) - $h;

    $this->_pdf->rect($x1, $y1, $w, $h);
    $this->_pdf->stroke();
  }

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

  function filled_rectangle($x1, $y1, $w, $h, $color) {
    $this->_set_fill_color($color);

    $y1 = $this->y($y1) - $h;

    $this->_pdf->rect($x1, $y1, $w, $h);
    $this->_pdf->fill();
  }

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

  function polygon($points, $color, $width = null, $style = null, $fill = false) {

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

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

    $y = $this->y(array_pop($points));
    $x = array_pop($points);
    $this->_pdf->moveto($x,$y);

    while (count($points) > 1) {
      $y = $this->y(array_pop($points));
      $x = array_pop($points);
      $this->_pdf->lineto($x,$y);
    }

    if ( $fill )
      $this->_pdf->fill();
    else
      $this->_pdf->closepath_stroke();
  }

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

  function circle($x, $y, $r, $color, $width = null, $style = null, $fill = false) {

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

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

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

    $this->_pdf->circle($x, $y, $r);

    if ( $fill )
      $this->_pdf->fill();
    else
      $this->_pdf->stroke();

  }

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

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

    $img_type = strtolower($img_type);

    if ( $img_type == "jpg" )
      $img_type = "jpeg";

    if ( isset($this->_imgs[$img_url]) )
      $img = $this->_imgs[$img_url];

    else {

      $img = $this->_imgs[$img_url] = $this->_pdf->load_image($img_type, $img_url, "");
    }

    $y = $this->y($y) - $h;
    $this->_pdf->fit_image($img, $x, $y, 'boxsize={'. "$w $h" .'} fitmethod=entire');

  }

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

  function text($x, $y, $text, $font, $size, $color = array(0,0,0), $adjust = 0, $angle = 0) {
    $fh = $this->_load_font($font);

    $this->_pdf->setfont($fh, $size);
    $this->_set_fill_color($color);

    $y = $this->y($y) - Font_Metrics::get_font_height($font, $size);

    $adjust = (float)$adjust;
    $angle = -(float)$angle;

    //$this->_pdf->fit_textline(utf8_decode($text), $x, $y, "rotate=$angle wordspacing=$adjust");
    $this->_pdf->fit_textline($text, $x, $y, "rotate=$angle wordspacing=$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) {
    $this->_pdf->add_nameddest($anchorname,"");
  }

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

  /**
   * 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 )
        $this->_pdf->create_annotation($x, $y, $x + $width, $y + $height, 'Link', "contents={$url} destname=". substr($url,1) . " linewidth=0");
    } else {

      list($proto, $host, $path, $file) = explode_url($url);

      if ( $proto == "" || $proto == "file://" )
        return; // Local links are not allowed
      $url = build_url($proto, $host, $path, $file);
      $url = str_replace("=", "%3D", rawurldecode($url));

      $action = $this->_pdf->create_action("URI", "url=" . $url);
      $this->_pdf->create_annotation($x, $y, $x + $width, $y + $height, 'Link', "contents={$url} action={activate=$action} linewidth=0");
    }
  }

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

  function get_text_width($text, $font, $size, $spacing = 0) {
    $fh = $this->_load_font($font);

    // Determine the additional width due to extra spacing
    $num_spaces = mb_substr_count($text," ");
    $delta = $spacing * $num_spaces;
    return $this->_pdf->stringwidth($text, $fh, $size) + $delta;
  }

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

  function get_font_height($font, $size) {

    $fh = $this->_load_font($font);

    $this->_pdf->setfont($fh, $size);

    $asc = $this->_pdf->get_value("ascender", $fh);
    $desc = $this->_pdf->get_value("descender", $fh);

    // $desc is usually < 0,
    return self::FONT_HEIGHT_SCALE * $size * ($asc - $desc);
  }

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

  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() {

    // Add objects to the current page
    $this->_place_objects();

    $this->_pdf->suspend_page("");
    $this->_pdf->begin_page_ext($this->_width, $this->_height, "");
    $this->_page_number = ++$this->_page_count;

  }

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

  /**
   * Add text to each page after rendering is complete
   */
  protected function _add_page_text() {

    if ( !count($this->_page_text) )
      return;

    $this->_pdf->suspend_page("");

    for ($p = 1; $p <= $this->_page_count; $p++) {

      $this->_pdf->resume_page("pagenumber=$p");

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

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

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

      }

      $this->_pdf->suspend_page("");

    }

    $this->_pdf->resume_page("pagenumber=".$this->_page_number);
  }

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

  function stream($filename, $options = null) {

    // Add page text
    $this->_add_page_text();

    if ( isset($options["compress"]) && $options["compress"] != 1 )
      $this->_pdf->set_value("compress", 0);
    else
      $this->_pdf->set_value("compress", 6);

    $this->_close();

    if ( self::$IN_MEMORY ) {
      $data = $this->_pdf->get_buffer();
      $size = strlen($data);

    } else
      $size = filesize($this->_file);


    $filename = str_replace(array("\n","'"),"", $filename);
    $attach = (isset($options["Attachment"]) && $options["Attachment"]) ? "attachment" : "inline";

    header("Cache-Control: private");
    header("Content-type: application/pdf");
    header("Content-Disposition: $attach; filename=\"$filename\"");

    //header("Content-length: " . $size);

    if ( self::$IN_MEMORY )
      echo $data;

    else {

      // Chunked readfile()
      $chunk = (1 << 21); // 2 MB
      $fh = fopen($this->_file, "rb");
      if ( !$fh )
        throw new DOMPDF_Exception("Unable to load temporary PDF file: " . $this->_file);

      while ( !feof($fh) )
        echo fread($fh,$chunk);
      fclose($fh);
      unlink($this->_file);
      $this->_file = null;
    }

    flush();


  }

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

  function output($options = null) {

    // Add page text
    $this->_add_page_text();

    if ( isset($options["compress"]) && $options["compress"] != 1 )
      $this->_pdf->set_value("compress", 0);
    else
      $this->_pdf->set_value("compress", 6);

    $this->_close();

    if ( self::$IN_MEMORY )
      $data = $this->_pdf->get_buffer();

    else {
      $data = file_get_contents($this->_file);
      unlink($this->_file);
      $this->_file = null;
    }

    return $data;
  }
}

// Workaround for idiotic limitation on statics...
PDFLib_Adapter::$PAPER_SIZES = CPDF_Adapter::$PAPER_SIZES;