function get_min_max_width()
{
$style = $this->_frame->get_style();
$this->_block_parent = $this->_frame->find_block_parent();
$line_width = $this->_frame->get_containing_block("w");
$str = $text = $this->_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", $str, -1, PREG_SPLIT_DELIM_CAPTURE));
array_walk($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", $str));
array_walk($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/", $text));
array_walk($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 += $delta;
return array($min, $max, "min" => $min, "max" => $max);
}
protected function _line_break($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;
// split the text into words
$words = preg_split('/([\\s-]+)/u', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
$wc = count($words);
// 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;
}
// 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 $offset;
}
if (self::$_buggy_splittext) {
// workaround to solve DOMText::spliText() bug parsing multibyte strings
$node = $this->_frame->get_node();
$txt0 = $node->substringData(0, $offset);
$txt1 = $node->substringData($offset, mb_strlen($node->textContent) - 1);
$node->replaceData(0, mb_strlen($node->textContent), $txt0);
$split = $node->parentNode->appendChild(new DOMText($txt1));
} else {
$split = $this->_frame->get_node()->splitText($offset);
}
$deco = $this->copy($split);
$p = $this->get_parent();
$p->insert_child_after($deco, $this, false);
if ($p instanceof Inline_Frame_Decorator) {
$p->split($deco);
}
return $deco;
}
//........................................................................
function delete_text($offset, $count)
{
$this->_frame->get_node()->deleteData($offset, $count);
}
//........................................................................
function set_text($text)
{
$this->_frame->get_node()->data = $text;
}
}
Text_Frame_Decorator::$_buggy_splittext = PHP_VERSION_ID < 50207;
if (self::$_buggy_splittext) {
// workaround to solve DOMText::spliText() bug parsing multibyte strings
$node = $this->_frame->get_node();
$txt0 = $node->substringData(0, $offset);
$txt1 = $node->substringData($offset, mb_strlen($node->textContent) - 1);
$node->replaceData(0, mb_strlen($node->textContent), $txt0);
$split = $node->parentNode->appendChild(new DOMText($txt1));
} else {
$split = $this->_frame->get_node()->splitText($offset);
}
$deco = $this->copy($split);
$p = $this->get_parent();
$p->insert_child_after($deco, $this, false);
if ($p instanceof Inline_Frame_Decorator) {
$p->split($deco);
}
return $deco;
}
//........................................................................
function delete_text($offset, $count)
{
$this->_frame->get_node()->deleteData($offset, $count);
}
//........................................................................
function set_text($text)
{
$this->_frame->get_node()->data = $text;
}
}
Text_Frame_Decorator::$_buggy_splittext = version_compare(PHP_VERSION, '5.2.6', '<=');
