Ejemplo n.º 1
1
 /**
  * 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 = $height;
     //debugpng
     if ($this->_dompdf->get_option("debugPng")) {
         print '[_background_image ' . $url . ']';
     }
     list($img, $type, ) = Cache::resolve_url($url, $sheet->get_protocol(), $sheet->get_host(), $sheet->get_base_path(), $this->_dompdf);
     // Bail if the image is no good
     if (Cache::is_broken($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, $img_h) = Helpers::dompdf_getimagesize($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) = $style->background_position;
     if (Helpers::is_percent($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) * $dpi / 72);
     if (Helpers::is_percent($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 -= $img_w;
             }
         }
     }
     if ($repeat !== "repeat" && $repeat !== "repeat-y") {
         //no repeat y
         if ($bg_y < 0) {
             $bg_height = $img_h + $bg_y;
         } else {
             $y += $bg_y * 72 / $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) / $dpi;
     } else {
         //repeat y
         if ($bg_y < 0) {
             $bg_y = -(-$bg_y % $img_h);
         } else {
             $bg_y = $bg_y % $img_h;
             if ($bg_y > 0) {
                 $bg_y -= $img_h;
             }
         }
     }
     //Optimization, if repeat has no effect
     if ($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) {
         $repeat = "no-repeat";
     }
     //Use filename as indicator only
     //different names for different variants to have different copies in the pdf
     //This is not dependent of background color of box! .'_'.(is_array($bg_color) ? $bg_color["hex"] : $bg_color)
     //Note: Here, bg_* are the start values, not end values after going through the tile loops!
     $filedummy = $img;
     $is_png = false;
     $filedummy .= '_' . $bg_width . '_' . $bg_height . '_' . $bg_x . '_' . $bg_y . '_' . $repeat;
     //Optimization to avoid multiple times rendering the same image.
     //If check functions are existing and identical image already cached,
     //then skip creation of duplicate, because it is not needed by addImagePng
     if ($this->_canvas instanceof CPDF && $this->_canvas->get_cpdf()->image_iscached($filedummy)) {
         $bg = null;
     } else {
         // Create a new image to fit over the background rectangle
         $bg = imagecreatetruecolor($bg_width, $bg_height);
         switch (strtolower($type)) {
             case "png":
                 $is_png = true;
                 imagesavealpha($bg, true);
                 imagealphablending($bg, false);
                 $src = imagecreatefrompng($img);
                 break;
             case "jpeg":
                 $src = imagecreatefromjpeg($img);
                 break;
             case "gif":
                 $src = imagecreatefromgif($img);
                 break;
             case "bmp":
                 $src = Helpers::imagecreatefrombmp($img);
                 break;
             default:
                 return;
                 // Unsupported image type
         }
         if ($src == null) {
             return;
         }
         //Background color if box is not relevant here
         //Non transparent image: box clipped to real size. Background non relevant.
         //Transparent image: The image controls the transparency and lets shine through whatever background.
         //However on transparent image preset the composed image with the transparency color,
         //to keep the transparency when copying over the non transparent parts of the tiles.
         $ti = imagecolortransparent($src);
         if ($ti >= 0) {
             $tc = imagecolorsforindex($src, $ti);
             $ti = imagecolorallocate($bg, $tc['red'], $tc['green'], $tc['blue']);
             imagefill($bg, 0, 0, $ti);
             imagecolortransparent($bg, $ti);
         }
         //This has only an effect for the non repeatable dimension.
         //compute start of src and dest coordinates of the single copy
         if ($bg_x < 0) {
             $dst_x = 0;
             $src_x = -$bg_x;
         } else {
             $src_x = 0;
             $dst_x = $bg_x;
         }
         if ($bg_y < 0) {
             $dst_y = 0;
             $src_y = -$bg_y;
         } else {
             $src_y = 0;
             $dst_y = $bg_y;
         }
         //For historical reasons exchange meanings of variables:
         //start_* will be the start values, while bg_* will be the temporary start values in the loops
         $start_x = $bg_x;
         $start_y = $bg_y;
         // Copy regions from the source image to the background
         if ($repeat === "no-repeat") {
             // Simply place the image on the background
             imagecopy($bg, $src, $dst_x, $dst_y, $src_x, $src_y, $img_w, $img_h);
         } else {
             if ($repeat === "repeat-x") {
                 for ($bg_x = $start_x; $bg_x < $bg_width; $bg_x += $img_w) {
                     if ($bg_x < 0) {
                         $dst_x = 0;
                         $src_x = -$bg_x;
                         $w = $img_w + $bg_x;
                     } else {
                         $dst_x = $bg_x;
                         $src_x = 0;
                         $w = $img_w;
                     }
                     imagecopy($bg, $src, $dst_x, $dst_y, $src_x, $src_y, $w, $img_h);
                 }
             } else {
                 if ($repeat === "repeat-y") {
                     for ($bg_y = $start_y; $bg_y < $bg_height; $bg_y += $img_h) {
                         if ($bg_y < 0) {
                             $dst_y = 0;
                             $src_y = -$bg_y;
                             $h = $img_h + $bg_y;
                         } else {
                             $dst_y = $bg_y;
                             $src_y = 0;
                             $h = $img_h;
                         }
                         imagecopy($bg, $src, $dst_x, $dst_y, $src_x, $src_y, $img_w, $h);
                     }
                 } else {
                     if ($repeat === "repeat") {
                         for ($bg_y = $start_y; $bg_y < $bg_height; $bg_y += $img_h) {
                             for ($bg_x = $start_x; $bg_x < $bg_width; $bg_x += $img_w) {
                                 if ($bg_x < 0) {
                                     $dst_x = 0;
                                     $src_x = -$bg_x;
                                     $w = $img_w + $bg_x;
                                 } else {
                                     $dst_x = $bg_x;
                                     $src_x = 0;
                                     $w = $img_w;
                                 }
                                 if ($bg_y < 0) {
                                     $dst_y = 0;
                                     $src_y = -$bg_y;
                                     $h = $img_h + $bg_y;
                                 } else {
                                     $dst_y = $bg_y;
                                     $src_y = 0;
                                     $h = $img_h;
                                 }
                                 imagecopy($bg, $src, $dst_x, $dst_y, $src_x, $src_y, $w, $h);
                             }
                         }
                     } else {
                         print 'Unknown repeat!';
                     }
                 }
             }
         }
         imagedestroy($src);
     }
     /* End optimize away creation of duplicates */
     $this->_canvas->clipping_rectangle($x, $y, $box_width, $box_height);
     //img: image url string
     //img_w, img_h: original image size in px
     //width, height: box size in pt
     //bg_width, bg_height: box size in px
     //x, y: left/top edge of box on page in pt
     //start_x, start_y: placement of image relative to pattern
     //$repeat: repeat mode
     //$bg: GD object of result image
     //$src: GD object of original image
     //When using cpdf and optimization to direct png creation from gd object is available,
     //don't create temp file, but place gd object directly into the pdf
     if (!$is_png && $this->_canvas instanceof CPDF) {
         // Note: CPDF_Adapter image converts y position
         $this->_canvas->get_cpdf()->addImagePng($filedummy, $x, $this->_canvas->get_height() - $y - $height, $width, $height, $bg);
     } else {
         $tmp_dir = $this->_dompdf->get_option("temp_dir");
         $tmp_name = tempnam($tmp_dir, "bg_dompdf_img_");
         @unlink($tmp_name);
         $tmp_file = "{$tmp_name}.png";
         //debugpng
         if ($this->_dompdf->get_option("debugPng")) {
             print '[_background_image ' . $tmp_file . ']';
         }
         imagepng($bg, $tmp_file);
         $this->_canvas->image($tmp_file, $x, $y, $width, $height);
         imagedestroy($bg);
         //debugpng
         if ($this->_dompdf->get_option("debugPng")) {
             print '[_background_image unlink ' . $tmp_file . ']';
         }
         if (!$this->_dompdf->get_option("debugKeepTemp")) {
             unlink($tmp_file);
         }
     }
     $this->_canvas->clipping_end();
 }
Ejemplo n.º 2
0
 /**
  * @return string
  */
 public function __toString()
 {
     // Skip empty text frames
     //     if ( $this->is_text_node() &&
     //          preg_replace("/\s/", "", $this->_node->data) === "" )
     //       return "";
     $str = "<b>" . $this->_node->nodeName . ":</b><br/>";
     //$str .= spl_object_hash($this->_node) . "<br/>";
     $str .= "Id: " . $this->get_id() . "<br/>";
     $str .= "Class: " . get_class($this) . "<br/>";
     if ($this->is_text_node()) {
         $tmp = htmlspecialchars($this->_node->nodeValue);
         $str .= "<pre>'" . mb_substr($tmp, 0, 70) . (mb_strlen($tmp) > 70 ? "..." : "") . "'</pre>";
     } elseif ($css_class = $this->_node->getAttribute("class")) {
         $str .= "CSS class: '{$css_class}'<br/>";
     }
     if ($this->_parent) {
         $str .= "\nParent:" . $this->_parent->_node->nodeName . " (" . spl_object_hash($this->_parent->_node) . ") " . "<br/>";
     }
     if ($this->_prev_sibling) {
         $str .= "Prev: " . $this->_prev_sibling->_node->nodeName . " (" . spl_object_hash($this->_prev_sibling->_node) . ") " . "<br/>";
     }
     if ($this->_next_sibling) {
         $str .= "Next: " . $this->_next_sibling->_node->nodeName . " (" . spl_object_hash($this->_next_sibling->_node) . ") " . "<br/>";
     }
     $d = $this->get_decorator();
     while ($d && $d != $d->get_decorator()) {
         $str .= "Decorator: " . get_class($d) . "<br/>";
         $d = $d->get_decorator();
     }
     $str .= "Position: " . Helpers::pre_r($this->_position, true);
     $str .= "\nContaining block: " . Helpers::pre_r($this->_containing_block, true);
     $str .= "\nMargin width: " . Helpers::pre_r($this->get_margin_width(), true);
     $str .= "\nMargin height: " . Helpers::pre_r($this->get_margin_height(), true);
     $str .= "\nStyle: <pre>" . $this->_style->__toString() . "</pre>";
     if ($this->_decorator instanceof FrameDecorator\Block) {
         $str .= "Lines:<pre>";
         foreach ($this->_decorator->get_line_boxes() as $line) {
             foreach ($line->get_frames() as $frame) {
                 if ($frame instanceof FrameDecorator\Text) {
                     $str .= "\ntext: ";
                     $str .= "'" . htmlspecialchars($frame->get_text()) . "'";
                 } else {
                     $str .= "\nBlock: " . $frame->get_node()->nodeName . " (" . spl_object_hash($frame->get_node()) . ")";
                 }
             }
             $str .= "\ny => " . $line->y . "\n" . "w => " . $line->w . "\n" . "h => " . $line->h . "\n" . "left => " . $line->left . "\n" . "right => " . $line->right . "\n";
         }
         $str .= "</pre>";
     }
     $str .= "\n";
     if (php_sapi_name() === "cli") {
         $str = strip_tags(str_replace(array("<br/>", "<b>", "</b>"), array("\n", "", ""), $str));
     }
     return $str;
 }
Ejemplo n.º 3
0
 /**
  * Set inherited properties in this style using values in $parent
  *
  * @param Style $parent
  *
  * @return Style
  */
 function inherit(Style $parent)
 {
     // Set parent font size
     $this->_parent_font_size = $parent->get_font_size();
     foreach (self::$_inherited as $prop) {
         //inherit the !important property also.
         //if local property is also !important, don't inherit.
         if (isset($parent->_props[$prop]) && (!isset($this->_props[$prop]) || isset($parent->_important_props[$prop]) && !isset($this->_important_props[$prop]))) {
             if (isset($parent->_important_props[$prop])) {
                 $this->_important_props[$prop] = true;
             }
             //see __set and __get, on all assignments clear cache!
             $this->_prop_cache[$prop] = null;
             $this->_props[$prop] = $parent->_props[$prop];
         }
     }
     foreach ($this->_props as $prop => $value) {
         if ($value === "inherit") {
             if (isset($parent->_important_props[$prop])) {
                 $this->_important_props[$prop] = true;
             }
             //do not assign direct, but
             //implicite assignment through __set, redirect to specialized, get value with __get
             //This is for computing defaults if the parent setting is also missing.
             //Therefore do not directly assign the value without __set
             //set _important_props before that to be able to propagate.
             //see __set and __get, on all assignments clear cache!
             //$this->_prop_cache[$prop] = null;
             //$this->_props[$prop] = $parent->_props[$prop];
             //props_set for more obvious explicite assignment not implemented, because
             //too many implicite uses.
             // $this->props_set($prop, $parent->$prop);
             $this->__set($prop, $parent->__get($prop));
         }
     }
     return $this;
 }
Ejemplo n.º 4
0
 /**
  * parse regular CSS blocks
  *
  * _parse_properties() creates a new Style object based on the provided
  * CSS rules.
  *
  * @param string $str CSS rules
  * @return Style
  */
 private function _parse_properties($str)
 {
     $properties = preg_split("/;(?=(?:[^\\(]*\\([^\\)]*\\))*(?![^\\)]*\\)))/", $str);
     if ($this->_dompdf->get_option('debugCss')) {
         print '[_parse_properties';
     }
     // Create the style
     $style = new Style($this, Stylesheet::ORIG_AUTHOR);
     foreach ($properties as $prop) {
         // If the $prop contains an url, the regex may be wrong
         // @todo: fix the regex so that it works everytime
         /*if (strpos($prop, "url(") === false) {
             if (preg_match("/([a-z-]+)\s*:\s*[^:]+$/i", $prop, $m))
               $prop = $m[0];
           }*/
         //A css property can have " ! important" appended (whitespace optional)
         //strip this off to decode core of the property correctly.
         //Pass on in the style to allow proper handling:
         //!important properties can only be overridden by other !important ones.
         //$style->$prop_name = is a shortcut of $style->__set($prop_name,$value);.
         //If no specific set function available, set _props["prop_name"]
         //style is always copied completely, or $_props handled separately
         //Therefore set a _important_props["prop_name"]=true to indicate the modifier
         /* Instead of short code, prefer the typical case with fast code
            $important = preg_match("/(.*?)!\s*important/",$prop,$match);
              if ( $important ) {
                $prop = $match[1];
              }
              $prop = trim($prop);
              */
         if ($this->_dompdf->get_option('debugCss')) {
             print '(';
         }
         $important = false;
         $prop = trim($prop);
         if (substr($prop, -9) === 'important') {
             $prop_tmp = rtrim(substr($prop, 0, -9));
             if (substr($prop_tmp, -1) === '!') {
                 $prop = rtrim(substr($prop_tmp, 0, -1));
                 $important = true;
             }
         }
         if ($prop === "") {
             if ($this->_dompdf->get_option('debugCss')) {
                 print 'empty)';
             }
             continue;
         }
         $i = mb_strpos($prop, ":");
         if ($i === false) {
             if ($this->_dompdf->get_option('debugCss')) {
                 print 'novalue' . $prop . ')';
             }
             continue;
         }
         $prop_name = rtrim(mb_strtolower(mb_substr($prop, 0, $i)));
         $value = ltrim(mb_substr($prop, $i + 1));
         if ($this->_dompdf->get_option('debugCss')) {
             print $prop_name . ':=' . $value . ($important ? '!IMPORTANT' : '') . ')';
         }
         //New style, anyway empty
         //if ($important || !$style->important_get($prop_name) ) {
         //$style->$prop_name = array($value,$important);
         //assignment might be replaced by overloading through __set,
         //and overloaded functions might check _important_props,
         //therefore set _important_props first.
         if ($important) {
             $style->important_set($prop_name);
         }
         //For easier debugging, don't use overloading of assignments with __set
         $style->{$prop_name} = $value;
         //$style->props_set($prop_name, $value);
     }
     if ($this->_dompdf->get_option('debugCss')) {
         print '_parse_properties]';
     }
     return $style;
 }