ikan Uploader :
Directory : /var/www/html/chalkbank.com/application/libraries/dompdf/include/
Upload File : |
| Current File : /var/www/html/chalkbank.com/application/libraries/dompdf/include/text_frame_reflower.cls.php |
<?php
/**
* @package dompdf
* @link http://dompdf.github.com/
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @author Fabien Ménager <fabien.menager@gmail.com>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
/**
* Reflows text frames.
*
* @access private
* @package dompdf
*/
class Text_Frame_Reflower extends Frame_Reflower {
/**
* @var Block_Frame_Decorator
*/
protected $_block_parent; // Nearest block-level ancestor
/**
* @var Text_Frame_Decorator
*/
protected $_frame;
public static $_whitespace_pattern = "/[ \t\r\n\f]+/u";
function __construct(Text_Frame_Decorator $frame) { parent::__construct($frame); }
//........................................................................
protected function _collapse_white_space($text) {
//$text = $this->_frame->get_text();
// if ( $this->_block_parent->get_current_line_box->w == 0 )
// $text = ltrim($text, " \n\r\t");
return preg_replace(self::$_whitespace_pattern, " ", $text);
}
//........................................................................
protected function _line_break($text) {
$style = $this->_frame->get_style();
$size = $style->font_size;
$font = $style->font_family;
$current_line = $this->_block_parent->get_current_line_box();
// Determine the available width
$line_width = $this->_frame->get_containing_block("w");
$current_line_width = $current_line->left + $current_line->w + $current_line->right;
$available_width = $line_width - $current_line_width;
// Account for word-spacing
$word_spacing = $style->length_in_pt($style->word_spacing);
$char_spacing = $style->length_in_pt($style->letter_spacing);
// Determine the frame width including margin, padding & border
$text_width = Font_Metrics::get_text_width($text, $font, $size, $word_spacing, $char_spacing);
$mbp_width =
$style->length_in_pt( array( $style->margin_left,
$style->border_left_width,
$style->padding_left,
$style->padding_right,
$style->border_right_width,
$style->margin_right), $line_width );
$frame_width = $text_width + $mbp_width;
// Debugging:
// pre_r("Text: '" . htmlspecialchars($text). "'");
// pre_r("width: " .$frame_width);
// pre_r("textwidth + delta: $text_width + $mbp_width");
// pre_r("font-size: $size");
// pre_r("cb[w]: " .$line_width);
// pre_r("available width: " . $available_width);
// pre_r("current line width: " . $current_line_width);
// pre_r($words);
if ( $frame_width <= $available_width )
return false;
// split the text into words
$words = preg_split('/([\s-]+)/u', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
$wc = count($words);
// Determine the split point
$width = 0;
$str = "";
reset($words);
// @todo support <shy>, <wbr>
for ($i = 0; $i < $wc; $i += 2) {
$word = $words[$i] . (isset($words[$i+1]) ? $words[$i+1] : "");
$word_width = Font_Metrics::get_text_width($word, $font, $size, $word_spacing, $char_spacing);
if ( $width + $word_width + $mbp_width > $available_width )
break;
$width += $word_width;
$str .= $word;
}
$break_word = ($style->word_wrap === "break-word");
// The first word has overflowed. Force it onto the line
if ( $current_line_width == 0 && $width == 0 ) {
$s = "";
$last_width = 0;
if ( $break_word ) {
for ( $j = 0; $j < strlen($word); $j++ ) {
$s .= $word[$j];
$_width = Font_Metrics::get_text_width($s, $font, $size, $word_spacing, $char_spacing);
if ($_width > $available_width) {
break;
}
$last_width = $_width;
}
}
if ( $break_word && $last_width > 0 ) {
$width += $last_width;
$str .= substr($s, 0, -1);
}
else {
$width += $word_width;
$str .= $word;
}
}
$offset = mb_strlen($str);
// More debugging:
// pre_var_dump($str);
// pre_r("Width: ". $width);
// pre_r("Offset: " . $offset);
return $offset;
}
//........................................................................
protected function _newline_break($text) {
if ( ($i = mb_strpos($text, "\n")) === false)
return false;
return $i+1;
}
//........................................................................
protected function _layout_line() {
$frame = $this->_frame;
$style = $frame->get_style();
$text = $frame->get_text();
$size = $style->font_size;
$font = $style->font_family;
// Determine the text height
$style->height = Font_Metrics::get_font_height( $font, $size );
$split = false;
$add_line = false;
// Handle text transform:
// http://www.w3.org/TR/CSS21/text.html#propdef-text-transform
switch (strtolower($style->text_transform)) {
default: break;
case "capitalize": $text = mb_convert_case($text, MB_CASE_TITLE); break;
case "uppercase": $text = mb_convert_case($text, MB_CASE_UPPER); break;
case "lowercase": $text = mb_convert_case($text, MB_CASE_LOWER); break;
}
// Handle white-space property:
// http://www.w3.org/TR/CSS21/text.html#propdef-white-space
switch ($style->white_space) {
default:
case "normal":
$frame->set_text( $text = $this->_collapse_white_space($text) );
if ( $text == "" )
break;
$split = $this->_line_break($text);
break;
case "pre":
$split = $this->_newline_break($text);
$add_line = $split !== false;
break;
case "nowrap":
$frame->set_text( $text = $this->_collapse_white_space($text) );
break;
case "pre-wrap":
$split = $this->_newline_break($text);
if ( ($tmp = $this->_line_break($text)) !== false ) {
$add_line = $split < $tmp;
$split = min($tmp, $split);
} else
$add_line = true;
break;
case "pre-line":
// Collapse white-space except for \n
$frame->set_text( $text = preg_replace( "/[ \t]+/u", " ", $text ) );
if ( $text == "" )
break;
$split = $this->_newline_break($text);
if ( ($tmp = $this->_line_break($text)) !== false ) {
$add_line = $split < $tmp;
$split = min($tmp, $split);
} else
$add_line = true;
break;
}
// Handle degenerate case
if ( $text === "" )
return;
if ( $split !== false) {
// Handle edge cases
if ( $split == 0 && $text === " " ) {
$frame->set_text("");
return;
}
if ( $split == 0 ) {
// Trim newlines from the beginning of the line
//$this->_frame->set_text(ltrim($text, "\n\r"));
$this->_block_parent->add_line();
$frame->position();
// Layout the new line
$this->_layout_line();
}
else if ( $split < mb_strlen($frame->get_text()) ) {
// split the line if required
$frame->split_text($split);
$t = $frame->get_text();
// Remove any trailing newlines
if ( $split > 1 && $t[$split-1] === "\n" && !$frame->is_pre() )
$frame->set_text( mb_substr($t, 0, -1) );
// Do we need to trim spaces on wrapped lines? This might be desired, however, we
// can't trim the lines here or the layout will be affected if trimming the line
// leaves enough space to fit the next word in the text stream (because pdf layout
// is performed elsewhere).
/*if (!$this->_frame->get_prev_sibling() && !$this->_frame->get_next_sibling()) {
$t = $this->_frame->get_text();
$this->_frame->set_text( trim($t) );
}*/
}
if ( $add_line ) {
$this->_block_parent->add_line();
$frame->position();
}
} else {
// Remove empty space from start and end of line, but only where there isn't an inline sibling
// and the parent node isn't an inline element with siblings
// FIXME: Include non-breaking spaces?
$t = $frame->get_text();
$parent = $frame->get_parent();
$is_inline_frame = get_class($parent) === 'Inline_Frame_Decorator';
if ((!$is_inline_frame && !$frame->get_next_sibling())/* ||
( $is_inline_frame && !$parent->get_next_sibling())*/) { // fails <b>BOLD <u>UNDERLINED</u></b> becomes <b>BOLD<u>UNDERLINED</u></b>
$t = rtrim($t);
}
if ((!$is_inline_frame && !$frame->get_prev_sibling())/* ||
( $is_inline_frame && !$parent->get_prev_sibling())*/) { // <span><span>A<span>B</span> C</span></span> fails (the whitespace is removed)
$t = ltrim($t);
}
$frame->set_text( $t );
}
// Set our new width
$width = $frame->recalculate_width();
}
//........................................................................
function reflow(Block_Frame_Decorator $block = null) {
$frame = $this->_frame;
$page = $frame->get_root();
$page->check_forced_page_break($this->_frame);
if ( $page->is_full() )
return;
$this->_block_parent = /*isset($block) ? $block : */$frame->find_block_parent();
// Left trim the text if this is the first text on the line and we're
// collapsing white space
// if ( $this->_block_parent->get_current_line()->w == 0 &&
// ($frame->get_style()->white_space !== "pre" ||
// $frame->get_style()->white_space !== "pre-wrap") ) {
// $frame->set_text( ltrim( $frame->get_text() ) );
// }
$frame->position();
$this->_layout_line();
if ( $block ) {
$block->add_frame_to_line($frame);
}
}
//........................................................................
// Returns an array(0 => min, 1 => max, "min" => min, "max" => max) of the
// minimum and maximum widths of this frame
function get_min_max_width() {
/*if ( !is_null($this->_min_max_cache) )
return $this->_min_max_cache;*/
$frame = $this->_frame;
$style = $frame->get_style();
$this->_block_parent = $frame->find_block_parent();
$line_width = $frame->get_containing_block("w");
$str = $text = $frame->get_text();
$size = $style->font_size;
$font = $style->font_family;
$word_spacing = $style->length_in_pt($style->word_spacing);
$char_spacing = $style->length_in_pt($style->letter_spacing);
switch($style->white_space) {
default:
case "normal":
$str = preg_replace(self::$_whitespace_pattern," ", $str);
case "pre-wrap":
case "pre-line":
// Find the longest word (i.e. minimum length)
// This technique (using arrays & an anonymous function) is actually
// faster than doing a single-pass character by character scan. Heh,
// yes I took the time to bench it ;)
$words = array_flip(preg_split("/[\s-]+/u",$str, -1, PREG_SPLIT_DELIM_CAPTURE));
/*foreach($words as &$word) {
$word = Font_Metrics::get_text_width($word, $font, $size, $word_spacing, $char_spacing);
}*/
array_walk($words, create_function('&$val,$str',
'$val = Font_Metrics::get_text_width($str, "'.addslashes($font).'", '.$size.', '.$word_spacing.', '.$char_spacing.');'));
arsort($words);
$min = reset($words);
break;
case "pre":
$lines = array_flip(preg_split("/\n/u", $str));
/*foreach($words as &$word) {
$word = Font_Metrics::get_text_width($word, $font, $size, $word_spacing, $char_spacing);
}*/
array_walk($lines, create_function('&$val,$str',
'$val = Font_Metrics::get_text_width($str, "'.addslashes($font).'", '.$size.', '.$word_spacing.', '.$char_spacing.');'));
arsort($lines);
$min = reset($lines);
break;
case "nowrap":
$min = Font_Metrics::get_text_width($this->_collapse_white_space($str), $font, $size, $word_spacing, $char_spacing);
break;
}
switch ($style->white_space) {
default:
case "normal":
case "nowrap":
$str = preg_replace(self::$_whitespace_pattern," ", $text);
break;
case "pre-line":
//XXX: Is this correct?
$str = preg_replace( "/[ \t]+/u", " ", $text);
case "pre-wrap":
// Find the longest word (i.e. minimum length)
$lines = array_flip(preg_split("/\n/", $text));
/*foreach($words as &$word) {
$word = Font_Metrics::get_text_width($word, $font, $size, $word_spacing, $char_spacing);
}*/
array_walk($lines, create_function('&$val,$str',
'$val = Font_Metrics::get_text_width($str, "'.$font.'", '.$size.', '.$word_spacing.', '.$char_spacing.');'));
arsort($lines);
reset($lines);
$str = key($lines);
break;
}
$max = Font_Metrics::get_text_width($str, $font, $size, $word_spacing, $char_spacing);
$delta = $style->length_in_pt(array($style->margin_left,
$style->border_left_width,
$style->padding_left,
$style->padding_right,
$style->border_right_width,
$style->margin_right), $line_width);
$min += $delta;
$max += $delta;
return $this->_min_max_cache = array($min, $max, "min" => $min, "max" => $max);
}
}
Kontol Shell Bypass