PHP dompdf_getimagesize函数代码示例

 /**
  * Class constructor
  *
  * @param Frame $frame the bullet frame to decorate
  * @param DOMPDF $dompdf the document's dompdf object
  */
 function __construct(Frame $frame, DOMPDF $dompdf)
 {
     $style = $frame->get_style();
     $url = $style->list_style_image;
     $frame->get_node()->setAttribute("src", $url);
     $this->_img = new Image_Frame_Decorator($frame, $dompdf);
     parent::__construct($this->_img, $dompdf);
     list($width, $height) = dompdf_getimagesize($this->_img->get_image_url());
     // Resample the bullet image to be consistent with 'auto' sized images
     // See also Image_Frame_Reflower::get_min_max_width
     // Tested php ver: value measured in px, suffix "px" not in value: rtrim unnecessary.
     $this->_width = (double) rtrim($width, "px") * 72 / DOMPDF_DPI;
     $this->_height = (double) rtrim($height, "px") * 72 / DOMPDF_DPI;
     //If an image is taller as the containing block/box, the box should be extended.
     //Neighbour elements are overwriting the overlapping image areas.
     //Todo: Where can the box size be extended?
     //Code below has no effect.
     //See block_frame_reflower _calculate_restricted_height
     //See generated_frame_reflower, Dompdf:render() "list-item", "-dompdf-list-bullet"S.
     //Leave for now
     //if ($style->min_height < $this->_height ) {
     //  $style->min_height = $this->_height;
     //}
     //$style->height = "auto";
 }

 function __construct(Frame $frame, DOMPDF $dompdf)
 {
     $style = $frame->get_style();
     $url = $style->list_style_image;
     $frame->get_node()->setAttribute("src", $url);
     $this->_img = new Image_Frame_Decorator($frame, $dompdf);
     parent::__construct($this->_img, $dompdf);
     list($width, $height) = dompdf_getimagesize($this->_img->get_image_url());
     $this->_width = (double) rtrim($width, "px") * 72 / DOMPDF_DPI;
     $this->_height = (double) rtrim($height, "px") * 72 / DOMPDF_DPI;
 }

 function get_min_max_width()
 {
     if (DEBUGPNG) {
         list($img_width, $img_height) = dompdf_getimagesize($this->_frame->get_image_url());
         print "get_min_max_width() " . $this->_frame->get_style()->width . ' ' . $this->_frame->get_style()->height . ';' . $this->_frame->get_parent()->get_style()->width . " " . $this->_frame->get_parent()->get_style()->height . ";" . $this->_frame->get_parent()->get_parent()->get_style()->width . ' ' . $this->_frame->get_parent()->get_parent()->get_style()->height . ';' . $img_width . ' ' . $img_height . '|';
     }
     $style = $this->_frame->get_style();
     $width = $style->width > 0 ? $style->width : 0;
     if (is_percent($width)) {
         $t = 0.0;
         for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) {
             $f_style = $f->get_style();
             $t = $f_style->length_in_pt($f_style->width);
             if ($t != 0) {
                 break;
             }
         }
         $width = (double) rtrim($width, "%") * $t / 100;
     } elseif (!mb_strpos($width, 'pt')) {
         $width = $style->length_in_pt($width);
     }
     $height = $style->height > 0 ? $style->height : 0;
     if (is_percent($height)) {
         $t = 0.0;
         for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) {
             $f_style = $f->get_style();
             $t = $f_style->length_in_pt($f_style->height);
             if ($t != 0) {
                 break;
             }
         }
         $height = (double) rtrim($height, "%") * $t / 100;
     } elseif (!mb_strpos($height, 'pt')) {
         $height = $style->length_in_pt($height);
     }
     if ($width == 0 || $height == 0) {
         list($img_width, $img_height) = dompdf_getimagesize($this->_frame->get_image_url());
         if ($width == 0 && $height == 0) {
             $width = (double) ($img_width * 72) / DOMPDF_DPI;
             $height = (double) ($img_height * 72) / DOMPDF_DPI;
         } elseif ($height == 0 && $width != 0) {
             $height = $width / $img_width * $img_height;
         } elseif ($width == 0 && $height != 0) {
             $width = $height / $img_height * $img_width;
         }
     }
     if (DEBUGPNG) {
         print $width . ' ' . $height . ';';
     }
     $style->width = $width . "pt";
     $style->height = $height . "pt";
     return array($width, $width, "min" => $width, "max" => $width);
 }

 static function detect_type($file)
 {
     list(, , $type) = dompdf_getimagesize($file);
     return $type;
 }

 function get_min_max_width()
 {
     if (DEBUGPNG) {
         // Determine the image's size. Time consuming. Only when really needed?
         list($img_width, $img_height) = dompdf_getimagesize($this->_frame->get_image_url());
         print "get_min_max_width() " . $this->_frame->get_style()->width . ' ' . $this->_frame->get_style()->height . ';' . $this->_frame->get_parent()->get_style()->width . " " . $this->_frame->get_parent()->get_style()->height . ";" . $this->_frame->get_parent()->get_parent()->get_style()->width . ' ' . $this->_frame->get_parent()->get_parent()->get_style()->height . ';' . $img_width . ' ' . $img_height . '|';
     }
     $style = $this->_frame->get_style();
     //own style auto or invalid value: use natural size in px
     //own style value: ignore suffix text including unit, use given number as px
     //own style %: walk up parent chain until found available space in pt; fill available space
     //
     //special ignored unit: e.g. 10ex: e treated as exponent; x ignored; 10e completely invalid ->like auto
     $width = $style->width > 0 ? $style->width : 0;
     if (is_percent($width)) {
         $t = 0.0;
         for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) {
             $t = (double) $f->get_style()->width;
             //always in pt
             if ((double) $t != 0) {
                 break;
             }
         }
         $width = (double) rtrim($width, "%") * $t / 100;
         //maybe 0
     } elseif (!mb_strpos($width, 'pt')) {
         // Don't set image original size if "%" branch was 0 or size not given.
         // Otherwise aspect changed on %/auto combination for width/height
         // Resample according to px per inch
         // See also List_Bullet_Image_Frame_Decorator::__construct
         $width = (double) ($width * 72) / DOMPDF_DPI;
     }
     $height = $style->height > 0 ? $style->height : 0;
     if (is_percent($height)) {
         $t = 0.0;
         for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) {
             $t = (double) $f->get_style()->height;
             //always in pt
             if ((double) $t != 0) {
                 break;
             }
         }
         $height = (double) rtrim($height, "%") * $t / 100;
         //maybe 0
     } elseif (!mb_strpos($height, 'pt')) {
         // Don't set image original size if "%" branch was 0 or size not given.
         // Otherwise aspect changed on %/auto combination for width/height
         // Resample according to px per inch
         // See also List_Bullet_Image_Frame_Decorator::__construct
         $height = (double) ($height * 72) / DOMPDF_DPI;
     }
     if ($width == 0 || $height == 0) {
         // Determine the image's size. Time consuming. Only when really needed!
         list($img_width, $img_height) = dompdf_getimagesize($this->_frame->get_image_url());
         // don't treat 0 as error. Can be downscaled or can be catched elsewhere if image not readable.
         // Resample according to px per inch
         // See also List_Bullet_Image_Frame_Decorator::__construct
         if ($width == 0 && $height == 0) {
             $width = (double) ($img_width * 72) / DOMPDF_DPI;
             $height = (double) ($img_height * 72) / DOMPDF_DPI;
         } elseif ($height == 0 && $width != 0) {
             $height = $width / $img_width * $img_height;
             //keep aspect ratio
         } elseif ($width == 0 && $height != 0) {
             $width = $height / $img_height * $img_width;
             //keep aspect ratio
         }
     }
     if (DEBUGPNG) {
         print $width . ' ' . $height . ';';
     }
     $style->width = $width . "pt";
     $style->height = $height . "pt";
     return array($width, $width, "min" => $width, "max" => $width);
 }

 function render(Frame $frame)
 {
     $style = $frame->get_style();
     $font_size = $style->get_font_size();
     $line_height = $style->length_in_pt($style->line_height, $frame->get_containing_block("w"));
     $this->_set_opacity($frame->get_opacity($style->opacity));
     // Handle list-style-image
     // If list style image is requested but missing, fall back to predefined types
     if ($style->list_style_image !== "none" && strcmp($img = $frame->get_image_url(), DOMPDF_LIB_DIR . "/res/broken_image.png") != 0) {
         list($x, $y) = $frame->get_position();
         //For expected size and aspect, instead of box size, use image natural size scaled to DPI.
         // Resample the bullet image to be consistent with 'auto' sized images
         // See also Image_Frame_Reflower::get_min_max_width
         // Tested php ver: value measured in px, suffix "px" not in value: rtrim unnecessary.
         //$w = $frame->get_width();
         //$h = $frame->get_height();
         list($width, $height) = dompdf_getimagesize($img);
         $w = (double) rtrim($width, "px") * 72 / DOMPDF_DPI;
         $h = (double) rtrim($height, "px") * 72 / DOMPDF_DPI;
         $x -= $w;
         $y -= ($line_height - $font_size) / 2;
         //Reverse hinting of list_bullet_positioner
         $this->_canvas->image($img, $frame->get_image_ext(), $x, $y, $w, $h);
     } else {
         $bullet_style = $style->list_style_type;
         $fill = false;
         switch ($bullet_style) {
             default:
             case "disc":
                 $fill = true;
             case "circle":
                 list($x, $y) = $frame->get_position();
                 $r = $font_size * List_Bullet_Frame_Decorator::BULLET_SIZE / 2;
                 $x -= $font_size * (List_Bullet_Frame_Decorator::BULLET_SIZE / 2);
                 $y += $font_size * (1 - List_Bullet_Frame_Decorator::BULLET_DESCENT) / 2;
                 $o = $font_size * List_Bullet_Frame_Decorator::BULLET_THICKNESS;
                 $this->_canvas->circle($x, $y, $r, $style->color, $o, null, $fill);
                 break;
             case "square":
                 list($x, $y) = $frame->get_position();
                 $w = $font_size * List_Bullet_Frame_Decorator::BULLET_SIZE;
                 $x -= $w;
                 $y += $font_size * (1 - List_Bullet_Frame_Decorator::BULLET_DESCENT - List_Bullet_Frame_Decorator::BULLET_SIZE) / 2;
                 $this->_canvas->filled_rectangle($x, $y, $w, $w, $style->color);
                 break;
             case "decimal-leading-zero":
             case "decimal":
             case "lower-alpha":
             case "lower-latin":
             case "lower-roman":
             case "lower-greek":
             case "upper-alpha":
             case "upper-latin":
             case "upper-roman":
             case "1":
                 // HTML 4.0 compatibility
             // HTML 4.0 compatibility
             case "a":
             case "i":
             case "A":
             case "I":
                 list($x, $y) = $frame->get_position();
                 $pad = null;
                 if ($bullet_style === "decimal-leading-zero") {
                     $pad = strlen($frame->get_parent()->get_parent()->get_node()->getAttribute("dompdf-children-count"));
                 }
                 $index = $frame->get_node()->getAttribute("dompdf-counter");
                 $text = $this->make_counter($index, $bullet_style, $pad);
                 $font_family = $style->font_family;
                 $spacing = 0;
                 //$frame->get_text_spacing() + $style->word_spacing;
                 if (trim($text) == "") {
                     return;
                 }
                 $x -= Font_Metrics::get_text_width($text, $font_family, $font_size, $spacing);
                 $this->_canvas->text($x, $y, $text, $font_family, $font_size, $style->color, $spacing);
             case "none":
                 break;
         }
     }
 }

 /**
  * Render a background image over a rectangular area
  *
  * @param string $url      The background image to load
  * @param float  $x        The left edge of the rectangular area
  * @param float  $y        The top edge of the rectangular area
  * @param float  $width    The width of the rectangular area
  * @param float  $height   The height of the rectangular area
  * @param Style  $style    The associated Style object
  *
  * @throws Exception
  */
 protected function _background_image($url, $x, $y, $width, $height, $style)
 {
     if (!function_exists("imagecreatetruecolor")) {
         throw new Exception("The PHP GD extension is required, but is not installed.");
     }
     $sheet = $style->get_stylesheet();
     // Skip degenerate cases
     if ($width == 0 || $height == 0) {
         return;
     }
     $box_width = $width;
     $box_height = $height;
     //debugpng
     if (DEBUGPNG) {
         print '[_background_image ' . $url . ']';
     }
     list($img, $type, ) = Image_Cache::resolve_url($url, $sheet->get_protocol(), $sheet->get_host(), $sheet->get_base_path(), $this->_dompdf);
     // Bail if the image is no good
     if (Image_Cache::is_broken($img)) {
         return;
     }
     //Try to optimize away reading and composing of same background multiple times
     //Postponing read with imagecreatefrom   ...()
     //final composition parameters and name not known yet
     //Therefore read dimension directly from file, instead of creating gd object first.
     //$img_w = imagesx($src); $img_h = imagesy($src);
     list($img_w, $img_h) = dompdf_getimagesize($img);
     if (!isset($img_w) || $img_w == 0 || !isset($img_h) || $img_h == 0) {
         return;
     }
     $repeat = $style->background_repeat;
     $dpi = $this->_dompdf->get_option("dpi");
     //Increase background resolution and dependent box size according to image resolution to be placed in
     //Then image can be copied in without resize
     $bg_width = round((double) ($width * $dpi) / 72);
     $bg_height = round((double) ($height * $dpi) / 72);
     //Need %bg_x, $bg_y as background pos, where img starts, converted to pixel
     list($bg_x, $bg_y) = $style->background_position;
     if (is_percent($bg_x)) {
         // The point $bg_x % from the left edge of the image is placed
         // $bg_x % from the left edge of the background rectangle
         $p = (double) $bg_x / 100.0;
         $x1 = $p * $img_w;
         $x2 = $p * $bg_width;
         $bg_x = $x2 - $x1;
     } else {
         $bg_x = (double) ($style->length_in_pt($bg_x) * $dpi) / 72;
     }
     $bg_x = round($bg_x + $style->length_in_pt($style->border_left_width) * $dpi / 72);
     if (is_percent($bg_y)) {
         // The point $bg_y % from the left edge of the image is placed
         // $bg_y % from the left edge of the background rectangle
         $p = (double) $bg_y / 100.0;
         $y1 = $p * $img_h;
         $y2 = $p * $bg_height;
         $bg_y = $y2 - $y1;
     } else {
         $bg_y = (double) ($style->length_in_pt($bg_y) * $dpi) / 72;
     }
     $bg_y = round($bg_y + $style->length_in_pt($style->border_top_width) * $dpi / 72);
     //clip background to the image area on partial repeat. Nothing to do if img off area
     //On repeat, normalize start position to the tile at immediate left/top or 0/0 of area
     //On no repeat with positive offset: move size/start to have offset==0
     //Handle x/y Dimensions separately
     if ($repeat !== "repeat" && $repeat !== "repeat-x") {
         //No repeat x
         if ($bg_x < 0) {
             $bg_width = $img_w + $bg_x;
         } else {
             $x += $bg_x * 72 / $dpi;
             $bg_width = $bg_width - $bg_x;
             if ($bg_width > $img_w) {
                 $bg_width = $img_w;
             }
             $bg_x = 0;
         }
         if ($bg_width <= 0) {
             return;
         }
         $width = (double) ($bg_width * 72) / $dpi;
     } else {
         //repeat x
         if ($bg_x < 0) {
             $bg_x = -(-$bg_x % $img_w);
         } else {
             $bg_x = $bg_x % $img_w;
             if ($bg_x > 0) {
                 $bg_x -= $img_w;
//.........这里部分代码省略.........

 protected function _background_image($url, $x, $y, $width, $height, $style)
 {
     $sheet = $style->get_stylesheet();
     if ($width == 0 || $height == 0) {
         return;
     }
     $box_width = $width;
     $box_height = $height;
     if (DEBUGPNG) {
         print '[_background_image ' . $url . ']';
     }
     list($img, $type, $msg) = Image_Cache::resolve_url($url, $sheet->get_protocol(), $sheet->get_host(), $sheet->get_base_path());
     if (Image_Cache::is_broken($img)) {
         return;
     }
     list($img_w, $img_h) = dompdf_getimagesize($img);
     if (!isset($img_w) || $img_w == 0 || !isset($img_h) || $img_h == 0) {
         return;
     }
     $repeat = $style->background_repeat;
     $bg_color = $style->background_color;
     $bg_width = round((double) ($width * DOMPDF_DPI) / 72);
     $bg_height = round((double) ($height * DOMPDF_DPI) / 72);
     list($bg_x, $bg_y) = $style->background_position;
     if (is_percent($bg_x)) {
         $p = (double) $bg_x / 100.0;
         $x1 = $p * $img_w;
         $x2 = $p * $bg_width;
         $bg_x = $x2 - $x1;
     } else {
         $bg_x = (double) ($style->length_in_pt($bg_x) * DOMPDF_DPI) / 72;
     }
     $bg_x = round($bg_x + $style->length_in_pt($style->border_left_width) * DOMPDF_DPI / 72);
     if (is_percent($bg_y)) {
         $p = (double) $bg_y / 100.0;
         $y1 = $p * $img_h;
         $y2 = $p * $bg_height;
         $bg_y = $y2 - $y1;
     } else {
         $bg_y = (double) ($style->length_in_pt($bg_y) * DOMPDF_DPI) / 72;
     }
     $bg_y = round($bg_y + $style->length_in_pt($style->border_top_width) * DOMPDF_DPI / 72);
     if ($repeat !== "repeat" && $repeat !== "repeat-x") {
         if ($bg_x < 0) {
             $bg_width = $img_w + $bg_x;
         } else {
             $x += $bg_x * 72 / DOMPDF_DPI;
             $bg_width = $bg_width - $bg_x;
             if ($bg_width > $img_w) {
                 $bg_width = $img_w;
             }
             $bg_x = 0;
         }
         if ($bg_width <= 0) {
             return;
         }
         $width = (double) ($bg_width * 72) / DOMPDF_DPI;
     } else {
         if ($bg_x < 0) {
             $bg_x = -(-$bg_x % $img_w);
         } else {
             $bg_x = $bg_x % $img_w;
             if ($bg_x > 0) {
                 $bg_x -= $img_w;
             }
         }
     }
     if ($repeat !== "repeat" && $repeat !== "repeat-y") {
         if ($bg_y < 0) {
             $bg_height = $img_h + $bg_y;
         } else {
             $y += $bg_y * 72 / DOMPDF_DPI;
             $bg_height = $bg_height - $bg_y;
             if ($bg_height > $img_h) {
                 $bg_height = $img_h;
             }
             $bg_y = 0;
         }
         if ($bg_height <= 0) {
             return;
         }
         $height = (double) ($bg_height * 72) / DOMPDF_DPI;
     } else {
         if ($bg_y < 0) {
             $bg_y = -(-$bg_y % $img_h);
         } else {
             $bg_y = $bg_y % $img_h;
             if ($bg_y > 0) {
                 $bg_y -= $img_h;
             }
         }
     }
     if ($repeat === "repeat" && $bg_y <= 0 && $img_h + $bg_y >= $bg_height) {
         $repeat = "repeat-x";
     }
     if ($repeat === "repeat" && $bg_x <= 0 && $img_w + $bg_x >= $bg_width) {
         $repeat = "repeat-y";
     }
     if ($repeat === "repeat-x" && $bg_x <= 0 && $img_w + $bg_x >= $bg_width || $repeat === "repeat-y" && $bg_y <= 0 && $img_h + $bg_y >= $bg_height) {
         $repeat = "no-repeat";
//.........这里部分代码省略.........

  function get_min_max_width() {
    if (DEBUGPNG) {
      // Determine the image's size. Time consuming. Only when really needed?
      list($img_width, $img_height) = dompdf_getimagesize($this->_frame->get_image_url());
      print "get_min_max_width() ".
        $this->_frame->get_style()->width.' '.
        $this->_frame->get_style()->height.';'.
        $this->_frame->get_parent()->get_style()->width." ".
        $this->_frame->get_parent()->get_style()->height.";".
        $this->_frame->get_parent()->get_parent()->get_style()->width.' '.
        $this->_frame->get_parent()->get_parent()->get_style()->height.';'.
        $img_width. ' '.
        $img_height.'|' ;
    }

    $style = $this->_frame->get_style();

    $width_forced = true;
    $height_forced = true;

    //own style auto or invalid value: use natural size in px
    //own style value: ignore suffix text including unit, use given number as px
    //own style %: walk up parent chain until found available space in pt; fill available space
    //
    //special ignored unit: e.g. 10ex: e treated as exponent; x ignored; 10e completely invalid ->like auto

    $width = ($style->width > 0 ? $style->width : 0);
    if ( is_percent($width) ) {
      $t = 0.0;
      for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) {
        $f_style = $f->get_style();
        $t = $f_style->length_in_pt($f_style->width);
        if ($t != 0) {
          break;
        }
      }
      $width = ((float)rtrim($width,"%") * $t)/100; //maybe 0
    } elseif ( !mb_strpos($width, 'pt') ) {
      // Don't set image original size if "%" branch was 0 or size not given.
      // Otherwise aspect changed on %/auto combination for width/height
      // Resample according to px per inch
      // See also List_Bullet_Image_Frame_Decorator::__construct
      $width = $style->length_in_pt($width);
    }

    $height = ($style->height > 0 ? $style->height : 0);
    if ( is_percent($height) ) {
      $t = 0.0;
      for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) {
        $f_style = $f->get_style();
        $t = $f_style->length_in_pt($f_style->height);
        if ($t != 0) {
          break;
        }
      }
      $height = ((float)rtrim($height,"%") * $t)/100; //maybe 0
    } elseif ( !mb_strpos($height, 'pt') ) {
      // Don't set image original size if "%" branch was 0 or size not given.
      // Otherwise aspect changed on %/auto combination for width/height
      // Resample according to px per inch
      // See also List_Bullet_Image_Frame_Decorator::__construct
      $height = $style->length_in_pt($height);
    }

    if ($width == 0 || $height == 0) {
      // Determine the image's size. Time consuming. Only when really needed!
      list($img_width, $img_height) = dompdf_getimagesize($this->_frame->get_image_url());

      // don't treat 0 as error. Can be downscaled or can be catched elsewhere if image not readable.
      // Resample according to px per inch
      // See also List_Bullet_Image_Frame_Decorator::__construct
      if ($width == 0 && $height == 0) {
        $dpi = $this->_frame->get_dompdf()->get_option("dpi");
        $width = (float)($img_width * 72) / $dpi;
        $height = (float)($img_height * 72) / $dpi;
        $width_forced = false;
        $height_forced = false;
      } elseif ($height == 0 && $width != 0) {
        $height_forced = false;
        $height = ($width / $img_width) * $img_height; //keep aspect ratio
      } elseif ($width == 0 && $height != 0) {
        $width_forced = false;
        $width = ($height / $img_height) * $img_width; //keep aspect ratio
      }
    }

    // Handle min/max width/height
    if ( $style->min_width  !== "none" ||
         $style->max_width  !== "none" ||
         $style->min_height !== "none" ||
         $style->max_height !== "none" ) {

      list(/*$x*/, /*$y*/, $w, $h) = $this->_frame->get_containing_block();

      $min_width = $style->length_in_pt($style->min_width, $w);
      $max_width = $style->length_in_pt($style->max_width, $w);
      $min_height = $style->length_in_pt($style->min_height, $h);
      $max_height = $style->length_in_pt($style->max_height, $h);

      if ( $max_width !== "none" && $width > $max_width ) {
//.........这里部分代码省略.........

 /**
  * Resolve and fetch an image for use.
  *
  * @param string $url        The url of the image
  * @param string $proto      Default protocol if none specified in $url
  * @param string $host       Default host if none specified in $url
  * @param string $base_path  Default path if none specified in $url
  * @return array             An array with two elements: The local path to the image and the image extension
  */
 static function resolve_url($url, $proto, $host, $base_path)
 {
     global $_dompdf_warnings;
     $parsed_url = explode_url($url);
     $DEBUGPNG = DEBUGPNG;
     //=DEBUGPNG; Allow override of global setting for ad hoc debug
     $full_url_dbg = '';
     //debugpng
     if ($DEBUGPNG) {
         print 'resolve_url(' . $url . ',' . $proto . ',' . $host . ',' . $base_path . ')(' . $parsed_url['protocol'] . ')';
     }
     $remote = $proto != "" && $proto !== "file://";
     $remote = $remote || $parsed_url['protocol'] != "";
     $datauri = strpos($parsed_url['protocol'], "data:") === 0;
     if (!DOMPDF_ENABLE_REMOTE && $remote && !$datauri) {
         $resolved_url = DOMPDF_LIB_DIR . "/res/broken_image.png";
         $ext = "png";
         //debugpng
         if ($DEBUGPNG) {
             $full_url_dbg = '(blockedremote)';
         }
     } else {
         if (DOMPDF_ENABLE_REMOTE && $remote || $datauri) {
             // Download remote files to a temporary directory
             $full_url = build_url($proto, $host, $base_path, $url);
             if (isset(self::$_cache[$full_url])) {
                 list($resolved_url, $ext) = self::$_cache[$full_url];
                 //debugpng
                 if ($DEBUGPNG) {
                     $full_url_dbg = $full_url . '(cache)';
                 }
             } else {
                 $resolved_url = tempnam(DOMPDF_TEMP_DIR, "ca_dompdf_img_");
                 //debugpng
                 if ($DEBUGPNG) {
                     echo $resolved_url . "\n";
                 }
                 if ($datauri) {
                     if ($parsed_data_uri = parse_data_uri($url)) {
                         $image = $parsed_data_uri['data'];
                         list(, $ext) = explode('/', $parsed_data_uri['mime'], 2);
                     }
                 } else {
                     $old_err = set_error_handler("record_warnings");
                     $image = file_get_contents($full_url);
                     restore_error_handler();
                 }
                 if (strlen($image) == 0) {
                     //target image not found
                     $resolved_url = DOMPDF_LIB_DIR . "/res/broken_image.png";
                     $ext = "png";
                     //debugpng
                     if ($DEBUGPNG) {
                         $full_url_dbg = $full_url . '(missing)';
                     }
                 } else {
                     file_put_contents($resolved_url, $image);
                     //e.g. fetch.php?media=url.jpg&cache=1
                     //- Image file name might be one of the dynamic parts of the url, don't strip off!
                     //  if ( preg_match("/.*\.(\w+)/",$url,$match) ) $ext = $match[1];
                     //- a remote url does not need to have a file extension at all
                     //- local cached file does not have a matching file extension
                     //Therefore get image type from the content
                     $imagedim = dompdf_getimagesize($resolved_url);
                     if ($imagedim[0] && $imagedim[1] && in_array($imagedim[2], array(IMAGETYPE_GIF, IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_BMP))) {
                         //target image is valid
                         $imagetypes = array('', 'gif', 'jpeg', 'png', 'swf', 'psd', 'bmp');
                         $ext = $imagetypes[$imagedim[2]];
                         if (rename($resolved_url, $resolved_url . '.' . $ext)) {
                             $resolved_url .= '.' . $ext;
                         }
                         //Don't put replacement image into cache - otherwise it will be deleted on cache cleanup.
                         //Only execute on successfull caching of remote image.
                         self::$_cache[$full_url] = array($resolved_url, $ext);
                     } else {
                         //target image is not valid.
                         unlink($resolved_url);
                         $resolved_url = DOMPDF_LIB_DIR . "/res/broken_image.png";
                         $ext = "png";
                     }
                 }
             }
         } else {
             $resolved_url = build_url($proto, $host, $base_path, $url);
             if ($DEBUGPNG) {
                 print 'build_url(' . $proto . ',' . $host . ',' . $base_path . ',' . $url . ')(' . $resolved_url . ')';
             }
             if (!preg_match("/.*\\.(\\w+)/", $url, $match)) {
                 //debugpng
                 if ($DEBUGPNG) {
                     print '[resolve_url exception ' . $url . ']';
//.........这里部分代码省略.........

  function render(Frame $frame) {
    $style = $frame->get_style();
    $font_size = $style->get_font_size();
    $line_height = $style->length_in_pt($style->line_height, $frame->get_containing_block("w"));

    $this->_set_opacity( $frame->get_opacity( $style->opacity ) );

    $li = $frame->get_parent();

    // Don't render bullets twice if if was split
    if ($li->_splitted) {
      return;
    }

    // Handle list-style-image
    // If list style image is requested but missing, fall back to predefined types
    if ( $style->list_style_image !== "none" &&
         !Image_Cache::is_broken($img = $frame->get_image_url())) {

      list($x,$y) = $frame->get_position();

      //For expected size and aspect, instead of box size, use image natural size scaled to DPI.
      // Resample the bullet image to be consistent with 'auto' sized images
      // See also Image_Frame_Reflower::get_min_max_width
      // Tested php ver: value measured in px, suffix "px" not in value: rtrim unnecessary.
      //$w = $frame->get_width();
      //$h = $frame->get_height();
      list($width, $height) = dompdf_getimagesize($img);
      $dpi = $this->_dompdf->get_option("dpi");
      $w = ((float)rtrim($width, "px") * 72) / $dpi;
      $h = ((float)rtrim($height, "px") * 72) / $dpi;

      $x -= $w;
      $y -= ($line_height - $font_size)/2; //Reverse hinting of list_bullet_positioner

      $this->_canvas->image( $img, $x, $y, $w, $h);

    } else {

      $bullet_style = $style->list_style_type;

      $fill = false;

      switch ($bullet_style) {

      default:
      case "disc":
        $fill = true;

      case "circle":
        list($x,$y) = $frame->get_position();
        $r = ($font_size*(List_Bullet_Frame_Decorator::BULLET_SIZE /*-List_Bullet_Frame_Decorator::BULLET_THICKNESS*/ ))/2;
        $x -= $font_size*(List_Bullet_Frame_Decorator::BULLET_SIZE/2);
        $y += ($font_size*(1-List_Bullet_Frame_Decorator::BULLET_DESCENT))/2;
        $o = $font_size*List_Bullet_Frame_Decorator::BULLET_THICKNESS;
        $this->_canvas->circle($x, $y, $r, $style->color, $o, null, $fill);
        break;

      case "square":
        list($x, $y) = $frame->get_position();
        $w = $font_size*List_Bullet_Frame_Decorator::BULLET_SIZE;
        $x -= $w;
        $y += ($font_size*(1-List_Bullet_Frame_Decorator::BULLET_DESCENT-List_Bullet_Frame_Decorator::BULLET_SIZE))/2;
        $this->_canvas->filled_rectangle($x, $y, $w, $w, $style->color);
        break;

      case "decimal-leading-zero":
      case "decimal":
      case "lower-alpha":
      case "lower-latin":
      case "lower-roman":
      case "lower-greek":
      case "upper-alpha":
      case "upper-latin":
      case "upper-roman":
      case "1": // HTML 4.0 compatibility
      case "a":
      case "i":
      case "A":
      case "I":
        $pad = null;
        if ( $bullet_style === "decimal-leading-zero" ) {
          $pad = strlen($li->get_parent()->get_node()->getAttribute("dompdf-children-count"));
        }

        $node = $frame->get_node();

        if ( !$node->hasAttribute("dompdf-counter") ) {
          return;
        }

        $index = $node->getAttribute("dompdf-counter");
        $text = $this->make_counter($index, $bullet_style, $pad);

        if ( trim($text) == "" ) {
          return;
        }

        $spacing = 0;
        $font_family = $style->font_family;
//.........这里部分代码省略.........

 static function detect_type($file, $context = null)
 {
     list(, , $type) = dompdf_getimagesize($file, $context);
     return $type;
 }

    function image($img, $x, $y, $w, $h, $resolution = "normal")
    {
        list($width, $height, $type) = dompdf_getimagesize($img);

        //debugpng
        if (DEBUGPNG) print "[image:$img|$width|$height|$type]";

        switch ($type) {
            case IMAGETYPE_JPEG:
                if (DEBUGPNG) print '!!!jpg!!!';
                $this->_pdf->addJpegFromFile($img, $x, $this->y($y) - $h, $w, $h);
                break;

            case IMAGETYPE_GIF:
            case IMAGETYPE_BMP:
                if (DEBUGPNG) print '!!!bmp or gif!!!';
                // @todo use cache for BMP and GIF
                $img = $this->_convert_gif_bmp_to_png($img, $type);

            case IMAGETYPE_PNG:
                if (DEBUGPNG) print '!!!png!!!';

                $this->_pdf->addPngFromFile($img, $x, $this->y($y) - $h, $w, $h);
                break;

            default:
                if (DEBUGPNG) print '!!!unknown!!!';
        }
    }

 function render(Frame $frame)
 {
     $style = $frame->get_style();
     $font_size = $style->get_font_size();
     $line_height = $style->length_in_pt($style->line_height, $frame->get_containing_block("w"));
     $this->_set_opacity($frame->get_opacity($style->opacity));
     if ($style->list_style_image !== "none" && !Image_Cache::is_broken($img = $frame->get_image_url())) {
         list($x, $y) = $frame->get_position();
         list($width, $height) = dompdf_getimagesize($img);
         $w = (double) rtrim($width, "px") * 72 / DOMPDF_DPI;
         $h = (double) rtrim($height, "px") * 72 / DOMPDF_DPI;
         $x -= $w;
         $y -= ($line_height - $font_size) / 2;
         $this->_canvas->image($img, $x, $y, $w, $h);
     } else {
         $bullet_style = $style->list_style_type;
         $fill = false;
         switch ($bullet_style) {
             default:
             case "disc":
                 $fill = true;
             case "circle":
                 list($x, $y) = $frame->get_position();
                 $r = $font_size * List_Bullet_Frame_Decorator::BULLET_SIZE / 2;
                 $x -= $font_size * (List_Bullet_Frame_Decorator::BULLET_SIZE / 2);
                 $y += $font_size * (1 - List_Bullet_Frame_Decorator::BULLET_DESCENT) / 2;
                 $o = $font_size * List_Bullet_Frame_Decorator::BULLET_THICKNESS;
                 $this->_canvas->circle($x, $y, $r, $style->color, $o, null, $fill);
                 break;
             case "square":
                 list($x, $y) = $frame->get_position();
                 $w = $font_size * List_Bullet_Frame_Decorator::BULLET_SIZE;
                 $x -= $w;
                 $y += $font_size * (1 - List_Bullet_Frame_Decorator::BULLET_DESCENT - List_Bullet_Frame_Decorator::BULLET_SIZE) / 2;
                 $this->_canvas->filled_rectangle($x, $y, $w, $w, $style->color);
                 break;
             case "decimal-leading-zero":
             case "decimal":
             case "lower-alpha":
             case "lower-latin":
             case "lower-roman":
             case "lower-greek":
             case "upper-alpha":
             case "upper-latin":
             case "upper-roman":
             case "1":
             case "a":
             case "i":
             case "A":
             case "I":
                 $li = $frame->get_parent();
                 $pad = null;
                 if ($bullet_style === "decimal-leading-zero") {
                     $pad = strlen($li->get_parent()->get_node()->getAttribute("dompdf-children-count"));
                 }
                 $index = $frame->get_node()->getAttribute("dompdf-counter");
                 $text = $this->make_counter($index, $bullet_style, $pad);
                 if (trim($text) == "") {
                     return;
                 }
                 $spacing = 0;
                 $font_family = $style->font_family;
                 $line = $li->get_containing_line();
                 list($x, $y) = array($frame->get_position("x"), $line->y);
                 $x -= Font_Metrics::get_text_width($text, $font_family, $font_size, $spacing);
                 $line_height = $style->line_height;
                 $y += ($line_height - $font_size) / 4;
                 $this->_canvas->text($x, $y, $text, $font_family, $font_size, $style->color, $spacing);
             case "none":
                 break;
         }
     }
 }

 static function detect_type($file)
 {
     list($width, $height, $type) = dompdf_getimagesize($file);
     return $type;
 }