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<?php
/**
* @package dompdf
* @link http://dompdf.github.com/
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @author Brian Sweeney <eclecticgeek@gmail.com>
* @author Fabien Ménager <fabien.menager@gmail.com>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
namespace Dompdf\FrameDecorator;
use Dompdf\Dompdf;
use Dompdf\Frame;
use Dompdf\Exception;
use DOMText;
use Dompdf\FontMetrics;
/**
* Decorates Frame objects for text layout
*
* @access private
* @package dompdf
*/
class Text extends AbstractFrameDecorator
{
// protected members
protected $_text_spacing;
/**
* Text constructor.
* @param Frame $frame
* @param Dompdf $dompdf
* @throws Exception
*/
function __construct(Frame $frame, Dompdf $dompdf)
{
if (!$frame->is_text_node()) {
throw new Exception("Text_Decorator can only be applied to #text nodes.");
}
parent::__construct($frame, $dompdf);
$this->_text_spacing = null;
}
function reset()
{
parent::reset();
$this->_text_spacing = null;
}
// Accessor methods
/**
* @return null
*/
function get_text_spacing()
{
return $this->_text_spacing;
}
/**
* @return string
*/
function get_text()
{
// FIXME: this should be in a child class (and is incorrect)
// if ( $this->_frame->get_style()->content !== "normal" ) {
// $this->_frame->get_node()->data = $this->_frame->get_style()->content;
// $this->_frame->get_style()->content = "normal";
// }
// Helpers::pre_r("---");
// $style = $this->_frame->get_style();
// var_dump($text = $this->_frame->get_node()->data);
// var_dump($asc = utf8_decode($text));
// for ($i = 0; $i < strlen($asc); $i++)
// Helpers::pre_r("$i: " . $asc[$i] . " - " . ord($asc[$i]));
// Helpers::pre_r("width: " . $this->_dompdf->getFontMetrics()->getTextWidth($text, $style->font_family, $style->font_size));
return $this->_frame->get_node()->data;
}
//........................................................................
/**
* Vertical margins & padding do not apply to text frames
*
* http://www.w3.org/TR/CSS21/visudet.html#inline-non-replaced:
*
* The vertical padding, border and margin of an inline, non-replaced box
* start at the top and bottom of the content area, not the
* 'line-height'. But only the 'line-height' is used to calculate the
* height of the line box.
*
* @return float|int
*/
function get_margin_height()
{
// This function is called in add_frame_to_line() and is used to
// determine the line height, so we actually want to return the
// 'line-height' property, not the actual margin box
$style = $this->get_parent()->get_style();
$font = $style->font_family;
$size = $style->font_size;
/*
Helpers::pre_r('-----');
Helpers::pre_r($style->line_height);
Helpers::pre_r($style->font_size);
Helpers::pre_r($this->_dompdf->getFontMetrics()->getFontHeight($font, $size));
Helpers::pre_r(($style->line_height / $size) * $this->_dompdf->getFontMetrics()->getFontHeight($font, $size));
*/
return ($style->line_height / ($size > 0 ? $size : 1)) * $this->_dompdf->getFontMetrics()->getFontHeight($font, $size);
}
/**
* @return array
*/
function get_padding_box()
{
$pb = $this->_frame->get_padding_box();
$pb[3] = $pb["h"] = $this->_frame->get_style()->height;
return $pb;
}
/**
* @param $spacing
*/
function set_text_spacing($spacing)
{
$style = $this->_frame->get_style();
$this->_text_spacing = $spacing;
$char_spacing = (float)$style->length_in_pt($style->letter_spacing);
// Re-adjust our width to account for the change in spacing
$style->width = $this->_dompdf->getFontMetrics()->getTextWidth($this->get_text(), $style->font_family, $style->font_size, $spacing, $char_spacing);
}
/**
* Recalculate the text width
*
* @return float
*/
function recalculate_width()
{
$style = $this->get_style();
$text = $this->get_text();
$size = $style->font_size;
$font = $style->font_family;
$word_spacing = (float)$style->length_in_pt($style->word_spacing);
$char_spacing = (float)$style->length_in_pt($style->letter_spacing);
return $style->width = $this->_dompdf->getFontMetrics()->getTextWidth($text, $font, $size, $word_spacing, $char_spacing);
}
// Text manipulation methods
/**
* split the text in this frame at the offset specified. The remaining
* text is added a sibling frame following this one and is returned.
*
* @param $offset
* @return Frame|null
*/
function split_text($offset)
{
if ($offset == 0) {
return null;
}
$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) {
$p->split($deco);
}
return $deco;
}
/**
* @param $offset
* @param $count
*/
function delete_text($offset, $count)
{
$this->_frame->get_node()->deleteData($offset, $count);
}
/**
* @param $text
*/
function set_text($text)
{
$this->_frame->get_node()->data = $text;
}
}
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