PHP Frame::get_position方法代码示例

 function render(Frame $frame)
 {
     $style = $frame->get_style();
     $bullet_style = $style->list_style_type;
     $bullet_size = List_Bullet_Frame_Decorator::BULLET_SIZE;
     $line_height = $style->length_in_pt($style->line_height, $frame->get_containing_block("w"));
     $fill = false;
     switch ($bullet_style) {
         default:
         case "disc":
             $fill = true;
         case "circle":
             if (!$fill) {
                 $fill = false;
             }
             list($x, $y) = $frame->get_position();
             $x += $bullet_size / 2;
             $y += $line_height / 2 + $bullet_size / 4;
             $r = $bullet_size / 4;
             $this->_canvas->circle($x, $y, $r, $style->color, null, null, $fill);
             break;
         case "square":
             list($x, $y) = $frame->get_position();
             $w = $bullet_size / 2;
             $x += $bullet_size / 2 - $w / 2;
             $y += $line_height / 2;
             $this->_canvas->filled_rectangle($x, $y, $w, $w, $style->color);
             break;
     }
 }

 function render(Frame $frame)
 {
     $style = $frame->get_style();
     $font_size = $style->get_font_size();
     $line_height = $style->length_in_pt($style->line_height, $frame->get_containing_block("w"));
     // Handle list-style-image
     // If list style image is requested but missing, fall back to predefined types
     if ($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, $height) = getimagesize($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 "none":
                 break;
         }
     }
 }

 function render(Frame $frame)
 {
     $style = $frame->get_style();
     list($x, $y) = $frame->get_position();
     $cb = $frame->get_containing_block();
     if (($ml = $style->margin_left) == "auto" || $ml == "none") {
         $ml = 0;
     }
     if (($pl = $style->padding_left) == "auto" || $pl == "none") {
         $pl = 0;
     }
     if (($bl = $style->border_left_width) == "auto" || $bl == "none") {
         $bl = 0;
     }
     $x += $style->length_in_pt(array($ml, $pl, $bl), $cb["w"]);
     $text = $frame->get_text();
     $font = $style->font_family;
     $size = $style->font_size;
     $height = $style->height;
     $spacing = $frame->get_text_spacing() + $style->word_spacing;
     if (preg_replace("/[\\s]+/", "", $text) == "") {
         return;
     }
     $this->_canvas->text($x, $y, $text, $font, $size, $style->color, $spacing);
     // Handle text decoration:
     // http://www.w3.org/TR/CSS21/text.html#propdef-text-decoration
     // Draw all applicable text-decorations.  Start with the root and work
     // our way down.
     $p = $frame;
     $stack = array();
     while ($p = $p->get_parent()) {
         $stack[] = $p;
     }
     while (count($stack) > 0) {
         $f = array_pop($stack);
         $deco_y = $y;
         if (($text_deco = $f->get_style()->text_decoration) === "none") {
             continue;
         }
         $color = $f->get_style()->color;
         switch ($text_deco) {
             default:
                 continue;
             case "underline":
                 $deco_y += $height * (1 + self::UNDERLINE_OFFSET);
                 break;
             case "overline":
                 $deco_y += $height * self::OVERLINE_OFFSET;
                 break;
             case "line-through":
                 $deco_y -= $height * (0.25 + self::LINETHROUGH_OFFSET);
                 break;
         }
         $dx = 0;
         $x1 = $x - self::DECO_EXTENSION;
         $x2 = $x + $style->width + $dx + self::DECO_EXTENSION;
         $this->_canvas->line($x1, $deco_y, $x2, $deco_y, $color, 0.5);
     }
 }

 protected function _check_new_page()
 {
     $y = $this->_frame->get_position("y");
     $h = $style->length_in_pt($style->height);
     // Check if we need to move to a new page
     if ($y + $h >= $this->_frame->get_root()->get_page_height()) {
         return true;
     }
 }

 function render(Frame $frame)
 {
     $style = $frame->get_style();
     $line_height = $style->length_in_pt($style->line_height, $frame->get_containing_block("w"));
     // Handle list-style-image
     if ($style->list_style_image != "none") {
         list($x, $y) = $frame->get_position();
         $w = $frame->get_width();
         $h = $frame->get_height();
         $x += $w / 2;
         $y += $line_height / 2 - $h / 2;
         $this->_canvas->image($frame->get_image_url(), $frame->get_image_ext(), $x, $y, $w, $h);
     } else {
         $bullet_style = $style->list_style_type;
         $bullet_size = List_Bullet_Frame_Decorator::BULLET_SIZE;
         $fill = false;
         switch ($bullet_style) {
             default:
             case "disc":
                 $fill = true;
             case "circle":
                 if (!$fill) {
                     $fill = false;
                 }
                 list($x, $y) = $frame->get_position();
                 $x += $bullet_size / 2 + List_Bullet_Frame_Decorator::BULLET_PADDING;
                 $y += $line_height - $bullet_size;
                 $r = $bullet_size / 2;
                 $this->_canvas->circle($x, $y, $r, $style->color, 0.2, null, $fill);
                 break;
             case "square":
                 list($x, $y) = $frame->get_position();
                 $w = $bullet_size;
                 $x += List_Bullet_Frame_Decorator::BULLET_PADDING;
                 $y += $line_height - $w - List_Bullet_Frame_Decorator::BULLET_PADDING;
                 $this->_canvas->filled_rectangle($x, $y, $w, $w, $style->color);
                 break;
         }
     }
 }

 /**
  * Check if $frame will fit on the page.  If the frame does not fit,
  * the frame tree is modified so that a page break occurs in the
  * correct location.
  *
  * @param Frame $frame the frame to check
  * @return Frame the frame following the page break
  */
 function check_page_break(Frame $frame)
 {
     // Do not split if we have already or if the frame was already
     // pushed to the next page (prevents infinite loops)
     if ($this->_page_full || $frame->_already_pushed) {
         return false;
     }
     // If the frame is absolute of fixed it shouldn't break
     $p = $frame;
     do {
         if ($p->is_absolute()) {
             return false;
         }
     } while ($p = $p->get_parent());
     $margin_height = $frame->get_margin_height();
     // FIXME If the row is taller than the page and
     // if it the first of the page, we don't break
     if ($frame->get_style()->display === "table-row" && !$frame->get_prev_sibling() && $margin_height > $this->get_margin_height()) {
         return false;
     }
     // Determine the frame's maximum y value
     $max_y = $frame->get_position("y") + $margin_height;
     // If a split is to occur here, then the bottom margins & paddings of all
     // parents of $frame must fit on the page as well:
     $p = $frame->get_parent();
     while ($p) {
         $style = $p->get_style();
         $max_y += $style->length_in_pt(array($style->margin_bottom, $style->padding_bottom, $style->border_bottom_width));
         $p = $p->get_parent();
     }
     // Check if $frame flows off the page
     if ($max_y <= $this->_bottom_page_margin) {
         // no: do nothing
         return false;
     }
     dompdf_debug("page-break", "check_page_break");
     dompdf_debug("page-break", "in_table: " . $this->_in_table);
     // yes: determine page break location
     $iter = $frame;
     $flg = false;
     $in_table = $this->_in_table;
     dompdf_debug("page-break", "Starting search");
     while ($iter) {
         //       echo "\nbacktrack: " .$iter->get_node()->nodeName ." ".spl_object_hash($iter->get_node()). "";
         if ($iter === $this) {
             dompdf_debug("page-break", "reached root.");
             // We've reached the root in our search.  Just split at $frame.
             break;
         }
         if ($this->_page_break_allowed($iter)) {
             dompdf_debug("page-break", "break allowed, splitting.");
             $iter->split(null, true);
             $this->_page_full = true;
             $this->_in_table = $in_table;
             $frame->_already_pushed = true;
             return true;
         }
         if (!$flg && ($next = $iter->get_last_child())) {
             dompdf_debug("page-break", "following last child.");
             if ($next->is_table()) {
                 $this->_in_table++;
             }
             $iter = $next;
             continue;
         }
         if ($next = $iter->get_prev_sibling()) {
             dompdf_debug("page-break", "following prev sibling.");
             if ($next->is_table() && !$iter->is_table()) {
                 $this->_in_table++;
             } else {
                 if (!$next->is_table() && $iter->is_table()) {
                     $this->_in_table--;
                 }
             }
             $iter = $next;
             $flg = false;
             continue;
         }
         if ($next = $iter->get_parent()) {
             dompdf_debug("page-break", "following parent.");
             if ($iter->is_table()) {
                 $this->_in_table--;
             }
             $iter = $next;
             $flg = true;
             continue;
         }
         break;
     }
     $this->_in_table = $in_table;
     // No valid page break found.  Just break at $frame.
     dompdf_debug("page-break", "no valid break found, just splitting.");
//.........这里部分代码省略.........

 function get_position($i = null)
 {
     return $this->_frame->get_position($i);
 }

 function render(Frame $frame)
 {
     $text = $frame->get_text();
     if (trim($text) === "") {
         return;
     }
     $style = $frame->get_style();
     list($x, $y) = $frame->get_position();
     $cb = $frame->get_containing_block();
     if (($ml = $style->margin_left) === "auto" || $ml === "none") {
         $ml = 0;
     }
     if (($pl = $style->padding_left) === "auto" || $pl === "none") {
         $pl = 0;
     }
     if (($bl = $style->border_left_width) === "auto" || $bl === "none") {
         $bl = 0;
     }
     $x += $style->length_in_pt(array($ml, $pl, $bl), $cb["w"]);
     $font = $style->font_family;
     $size = $frame_font_size = $style->font_size;
     $height = $style->height;
     $word_spacing = $frame->get_text_spacing() + $style->length_in_pt($style->word_spacing);
     $char_spacing = $style->length_in_pt($style->letter_spacing);
     $width = $style->width;
     /*
      * $text = str_replace( array("{PAGE_NUM}"), array($this->_canvas->get_page_number()), $text );
      */
     $this->_canvas->text($x, $y, $text, $font, $size, $style->color, $word_spacing, $char_spacing);
     $line = $frame->get_containing_line();
     // FIXME Instead of using the tallest frame to position,
     // the decoration, the text should be well placed
     if (false && $line->tallest_frame) {
         $base_frame = $line->tallest_frame;
         $style = $base_frame->get_style();
         $size = $style->font_size;
         $height = $line->h * ($size / $style->line_height);
     }
     if (method_exists($this->_canvas, "get_cpdf")) {
         $cpdf = $this->_canvas->get_cpdf();
         // $cpdf_font = $cpdf->fonts[$style->font_family];
         // $base = ($cpdf_font["UnderlinePosition"]*$size)/1000;
         // $descent = (($cpdf_font["Ascender"]-$cpdf_font["Descender"])*$size)/1000;
         $fontBBox = $cpdf->fonts[$style->font_family]['FontBBox'];
         $base = $fontBBox[3] * $size / 1000 * 0.9;
         $descent = $fontBBox[1] * $size / 1000;
         // print '<pre>Text_Renderer cpdf:'.$base.' '.$descent.' '.$size.'</pre>';
     } else {
         // Descent is font part below baseline, typically negative. $height is about full height of font box.
         // $descent = -$size/6; is less accurate, depends on font family.
         // @todo Could we get font info for PDFlib adapter and others ?
         $base = $size * 1.08;
         $descent = $size - $height;
         // print '<pre>Text_Renderer other than cpdf:'.$base.' '.$descent.' '.$size.'</pre>';
     }
     // Handle text decoration:
     // http://www.w3.org/TR/CSS21/text.html#propdef-text-decoration
     // Draw all applicable text-decorations. Start with the root and work our way down.
     $p = $frame;
     $stack = array();
     while ($p = $p->get_parent()) {
         $stack[] = $p;
     }
     while (isset($stack[0])) {
         $f = array_pop($stack);
         if (($text_deco = $f->get_style()->text_decoration) === "none") {
             continue;
         }
         $deco_y = $y;
         // $line->y;
         $color = $f->get_style()->color;
         switch ($text_deco) {
             default:
                 continue;
             case "underline":
                 $deco_y += $base - $descent + $size * (self::UNDERLINE_OFFSET - self::DECO_THICKNESS / 2);
                 break;
             case "overline":
                 $deco_y += $size * (self::OVERLINE_OFFSET + self::DECO_THICKNESS / 2);
                 break;
             case "line-through":
                 $deco_y += $base * 0.7 + $size * self::LINETHROUGH_OFFSET;
                 break;
         }
         $dx = 0;
         $x1 = $x - self::DECO_EXTENSION;
         $x2 = $x + $width + $dx + self::DECO_EXTENSION;
         $this->_canvas->line($x1, $deco_y, $x2, $deco_y, $color, $size * self::DECO_THICKNESS);
     }
     if (DEBUG_LAYOUT && DEBUG_LAYOUT_LINES) {
         $text_width = Font_Metrics::get_text_width($text, $font, $frame_font_size);
         $this->_debug_layout(array($x, $y, $text_width + ($line->wc - 1) * $word_spacing, $frame_font_size), "orange", array(0.5, 0.5));
     }
 }

 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;
         }
     }
 }

 /**
  * @param Text_Frame_Decorator $frame
  */
 function render(Frame $frame)
 {
     $text = $frame->get_text();
     if (trim($text) === "") {
         return;
     }
     $style = $frame->get_style();
     list($x, $y) = $frame->get_position();
     $cb = $frame->get_containing_block();
     if (($ml = $style->margin_left) === "auto" || $ml === "none") {
         $ml = 0;
     }
     if (($pl = $style->padding_left) === "auto" || $pl === "none") {
         $pl = 0;
     }
     if (($bl = $style->border_left_width) === "auto" || $bl === "none") {
         $bl = 0;
     }
     $x += $style->length_in_pt(array($ml, $pl, $bl), $cb["w"]);
     $font = $style->font_family;
     $size = $frame_font_size = $style->font_size;
     $height = $style->height;
     $word_spacing = $frame->get_text_spacing() + $style->length_in_pt($style->word_spacing);
     $char_spacing = $style->length_in_pt($style->letter_spacing);
     $width = $style->width;
     /*$text = str_replace(
         array("{PAGE_NUM}"),
         array($this->_canvas->get_page_number()), 
         $text
       );*/
     $this->_canvas->text($x, $y, $text, $font, $size, $style->color, $word_spacing, $char_spacing);
     $line = $frame->get_containing_line();
     // FIXME Instead of using the tallest frame to position,
     // the decoration, the text should be well placed
     if (false && $line->tallest_frame) {
         $base_frame = $line->tallest_frame;
         $style = $base_frame->get_style();
         $size = $style->font_size;
         $height = $line->h * ($size / $style->line_height);
     }
     $line_thickness = $size * self::DECO_THICKNESS;
     $underline_offset = $size * self::UNDERLINE_OFFSET;
     $overline_offset = $size * self::OVERLINE_OFFSET;
     $linethrough_offset = $size * self::LINETHROUGH_OFFSET;
     $underline_position = -0.08;
     if ($this->_canvas instanceof CPDF_Adapter) {
         $cpdf_font = $this->_canvas->get_cpdf()->fonts[$style->font_family];
         if (isset($cpdf_font["UnderlinePosition"])) {
             $underline_position = $cpdf_font["UnderlinePosition"] / 1000;
         }
         if (isset($cpdf_font["UnderlineThickness"])) {
             $line_thickness = $size * ($cpdf_font["UnderlineThickness"] / 1000);
         }
     }
     $descent = $size * $underline_position;
     $base = $size;
     // Handle text decoration:
     // http://www.w3.org/TR/CSS21/text.html#propdef-text-decoration
     // Draw all applicable text-decorations.  Start with the root and work our way down.
     $p = $frame;
     $stack = array();
     while ($p = $p->get_parent()) {
         $stack[] = $p;
     }
     while (isset($stack[0])) {
         $f = array_pop($stack);
         if (($text_deco = $f->get_style()->text_decoration) === "none") {
             continue;
         }
         $deco_y = $y;
         //$line->y;
         $color = $f->get_style()->color;
         switch ($text_deco) {
             default:
                 continue;
             case "underline":
                 $deco_y += $base - $descent + $underline_offset + $line_thickness / 2;
                 break;
             case "overline":
                 $deco_y += $overline_offset + $line_thickness / 2;
                 break;
             case "line-through":
                 $deco_y += $base * 0.7 + $linethrough_offset;
                 break;
         }
         $dx = 0;
         $x1 = $x - self::DECO_EXTENSION;
         $x2 = $x + $width + $dx + self::DECO_EXTENSION;
         $this->_canvas->line($x1, $deco_y, $x2, $deco_y, $color, $line_thickness);
     }
     if (DEBUG_LAYOUT && DEBUG_LAYOUT_LINES) {
         $text_width = Font_Metrics::get_text_width($text, $font, $frame_font_size);
         $this->_debug_layout(array($x, $y, $text_width + ($line->wc - 1) * $word_spacing, $frame_font_size), "orange", array(0.5, 0.5));
     }
 }

 /**
  * Check if $frame will fit on the page.  If the frame does not fit,
  * the frame tree is modified so that a page break occurs in the
  * correct location.
  *
  * @param Frame $frame the frame to check
  * @return Frame the frame following the page break
  */
 function check_page_break(Frame $frame)
 {
     // Do not split if we have already
     if ($this->_page_full) {
         return false;
     }
     // Determine the frame's maximum y value
     $max_y = $frame->get_position("y") + $frame->get_margin_height();
     // If a split is to occur here, then the bottom margins & paddings of all
     // parents of $frame must fit on the page as well:
     $p = $frame->get_parent();
     while ($p) {
         $style = $p->get_style();
         $max_y += $style->length_in_pt(array($style->margin_bottom, $style->padding_bottom, $style->border_bottom_width));
         $p = $p->get_parent();
     }
     // Check if $frame flows off the page
     if ($max_y <= $this->_bottom_page_margin) {
         // no: do nothing (?)
         return false;
     }
     //    echo "check_page_break\n";
     // yes: determine page break location
     $iter = $frame;
     $flg = false;
     $in_table = $this->_in_table;
     //     echo "Starting search\n";
     while ($iter) {
         //       echo "\nbacktrack: " .$iter->get_node()->nodeName ." ".(string)$iter->get_node(). "\n";
         if ($iter === $this) {
             //         echo "reached root.\n";
             // We've reached the root in our search.  Just split at $frame.
             break;
         }
         if ($this->_page_break_allowed($iter)) {
             //        echo "break allowed, splitting.\n";
             $iter->split();
             $this->_page_full = true;
             $this->_in_table = $in_table;
             return true;
         }
         if (!$flg && ($next = $iter->get_last_child())) {
             //         echo "following last child.\n";
             if (in_array($next->get_style()->display, Style::$TABLE_TYPES)) {
                 $this->_in_table++;
             }
             $iter = $next;
             continue;
         }
         if ($next = $iter->get_prev_sibling()) {
             //         echo "following prev sibling.\n";
             if (in_array($next->get_style()->display, Style::$TABLE_TYPES) && !in_array($iter->get_style()->display, Style::$TABLE_TYPES)) {
                 $this->_in_table++;
             } else {
                 if (!in_array($next->get_style()->display, Style::$TABLE_TYPES) && in_array($iter->get_style()->display, Style::$TABLE_TYPES)) {
                     $this->_in_table--;
                 }
             }
             $iter = $next;
             $flg = false;
             continue;
         }
         if ($next = $iter->get_parent()) {
             //         echo "following parent.\n";
             if (in_array($iter->get_style()->display, Style::$TABLE_TYPES)) {
                 $this->_in_table--;
             }
             $iter = $next;
             $flg = true;
             continue;
         }
         break;
     }
     $this->_in_table = $in_table;
     // No valid page break found.  Just break at $frame.
     //     echo "no valid break found, just splitting.\n";
     // If we are in a table, backtrack to the nearest table row
     if ($this->_in_table) {
         $tr = $frame;
         while ($tr && $tr->get_style()->display != "table-row") {
             $tr = $tr->get_parent();
         }
         $tr->split();
         $this->_page_full = true;
         return true;
     }
     $frame->split();
     $this->_page_full = true;
     return true;
 }

 function render(Frame $frame)
 {
     $style = $frame->get_style();
     list($x, $y) = $frame->get_position();
     $cb = $frame->get_containing_block();
     if (($ml = $style->margin_left) === "auto" || $ml === "none") {
         $ml = 0;
     }
     if (($pl = $style->padding_left) === "auto" || $pl === "none") {
         $pl = 0;
     }
     if (($bl = $style->border_left_width) === "auto" || $bl === "none") {
         $bl = 0;
     }
     $x += $style->length_in_pt(array($ml, $pl, $bl), $cb["w"]);
     $text = $frame->get_text();
     $font = $style->font_family;
     $size = $style->font_size;
     $height = $style->height;
     $spacing = $frame->get_text_spacing() + $style->word_spacing;
     //     if ( preg_replace("/[\s]+/", "", $text) == "" )
     //       return;
     $this->_canvas->text($x, $y, $text, $font, $size, $style->color, $spacing);
     if (method_exists($this->_canvas, "get_cpdf")) {
         $base = $this->_canvas->get_cpdf()->fonts[$this->_canvas->get_cpdf()->currentFont]['FontBBox'][3] * $size / 1000;
         $descent = $this->_canvas->get_cpdf()->fonts[$this->_canvas->get_cpdf()->currentFont]['FontBBox'][1] * $size / 1000;
         //print '<pre>Text_Renderer cpdf:'.$base.' '.$descent.' '.$size.'</pre>';
     } else {
         //Descent is font part below baseline, typically negative. $height is about full height of font box.
         //$descent = -$size/6; is less accurate, depends on font family.
         $base = $size;
         $descent = $size - $height;
         //print '<pre>Text_Renderer other than cpdf:'.$base.' '.$descent.' '.$size.'</pre>';
     }
     // Handle text decoration:
     // http://www.w3.org/TR/CSS21/text.html#propdef-text-decoration
     // Draw all applicable text-decorations.  Start with the root and work
     // our way down.
     $p = $frame;
     $stack = array();
     while ($p = $p->get_parent()) {
         $stack[] = $p;
     }
     while (count($stack) > 0) {
         $f = array_pop($stack);
         $deco_y = $y;
         if (($text_deco = $f->get_style()->text_decoration) === "none") {
             continue;
         }
         $color = $f->get_style()->color;
         switch ($text_deco) {
             default:
                 continue;
             case "underline":
                 $deco_y += $base - $descent + $size * (self::UNDERLINE_OFFSET - self::DECO_THICKNESS / 2);
                 break;
             case "overline":
                 $deco_y += $size * (self::OVERLINE_OFFSET + self::DECO_THICKNESS / 2);
                 break;
             case "line-through":
                 $deco_y += $base * 0.7 + $size * self::LINETHROUGH_OFFSET;
                 break;
         }
         $dx = 0;
         $x1 = $x - self::DECO_EXTENSION;
         $x2 = $x + $style->width + $dx + self::DECO_EXTENSION;
         $this->_canvas->line($x1, $deco_y, $x2, $deco_y, $color, $size * self::DECO_THICKNESS);
     }
 }

  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.........

 function check_page_break(Frame $frame)
 {
     if ($this->_page_full || $frame->_already_pushed) {
         return false;
     }
     $p = $frame;
     do {
         if ($p->is_absolute()) {
             return false;
         }
     } while ($p = $p->get_parent());
     $margin_height = $frame->get_margin_height();
     if ($frame->get_style()->display === "table-row" && !$frame->get_prev_sibling() && $margin_height > $this->get_margin_height()) {
         return false;
     }
     $max_y = $frame->get_position("y") + $margin_height;
     $p = $frame->get_parent();
     while ($p) {
         $style = $p->get_style();
         $max_y += $style->length_in_pt(array($style->margin_bottom, $style->padding_bottom, $style->border_bottom_width));
         $p = $p->get_parent();
     }
     if ($max_y <= $this->_bottom_page_margin) {
         return false;
     }
     dompdf_debug("page-break", "check_page_break");
     dompdf_debug("page-break", "in_table: " . $this->_in_table);
     $iter = $frame;
     $flg = false;
     $in_table = $this->_in_table;
     dompdf_debug("page-break", "Starting search");
     while ($iter) {
         if ($iter === $this) {
             dompdf_debug("page-break", "reached root.");
             break;
         }
         if ($this->_page_break_allowed($iter)) {
             dompdf_debug("page-break", "break allowed, splitting.");
             $iter->split(null, true);
             $this->_page_full = true;
             $this->_in_table = $in_table;
             $frame->_already_pushed = true;
             return true;
         }
         if (!$flg && ($next = $iter->get_last_child())) {
             dompdf_debug("page-break", "following last child.");
             if ($next->is_table()) {
                 $this->_in_table++;
             }
             $iter = $next;
             continue;
         }
         if ($next = $iter->get_prev_sibling()) {
             dompdf_debug("page-break", "following prev sibling.");
             if ($next->is_table() && !$iter->is_table()) {
                 $this->_in_table++;
             } else {
                 if (!$next->is_table() && $iter->is_table()) {
                     $this->_in_table--;
                 }
             }
             $iter = $next;
             $flg = false;
             continue;
         }
         if ($next = $iter->get_parent()) {
             dompdf_debug("page-break", "following parent.");
             if ($iter->is_table()) {
                 $this->_in_table--;
             }
             $iter = $next;
             $flg = true;
             continue;
         }
         break;
     }
     $this->_in_table = $in_table;
     dompdf_debug("page-break", "no valid break found, just splitting.");
     if ($this->_in_table) {
         $num_tables = $this->_in_table - 1;
         $iter = $frame;
         while ($iter && $num_tables && $iter->get_style()->display !== "table") {
             $iter = $iter->get_parent();
             $num_tables--;
         }
         $iter = $frame;
         while ($iter && $iter->get_style()->display !== "table-row") {
             $iter = $iter->get_parent();
         }
     }
     $frame->split(null, true);
     $this->_page_full = true;
     $frame->_already_pushed = true;
     return true;
 }

 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;
         }
     }
 }