crm.fsf.org/20131203/files/sites/all/modules-old/civicrm/vendor/dompdf/dompdf/src/FrameDecorator/Text.php

   1 <?php
   2 /**
   3  * @package dompdf
   4  * @link    http://dompdf.github.com/
   5  * @author  Benj Carson <benjcarson@digitaljunkies.ca>
   6  * @author  Brian Sweeney <eclecticgeek@gmail.com>
   7  * @author  Fabien Ménager <fabien.menager@gmail.com>
   8  * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
   9  */
  10 namespace Dompdf\FrameDecorator;
  11
  12 use Dompdf\Dompdf;
  13 use Dompdf\Frame;
  14 use Dompdf\Exception;
  15 use DOMText;
  16 use Dompdf\FontMetrics;
  17
  18 /**
  19  * Decorates Frame objects for text layout
  20  *
  21  * @access  private
  22  * @package dompdf
  23  */
  24 class Text extends AbstractFrameDecorator
  25 {
  26
  27     // protected members
  28     protected $_text_spacing;
  29
  30     function __construct(Frame $frame, Dompdf $dompdf)
  31     {
  32         if (!$frame->is_text_node()) {
  33             throw new Exception("Text_Decorator can only be applied to #text nodes.");
  34         }
  35
  36         parent::__construct($frame, $dompdf);
  37         $this->_text_spacing = null;
  38     }
  39
  40     //........................................................................
  41
  42     function reset()
  43     {
  44         parent::reset();
  45         $this->_text_spacing = null;
  46     }
  47
  48     //........................................................................
  49
  50     // Accessor methods
  51     function get_text_spacing()
  52     {
  53         return $this->_text_spacing;
  54     }
  55
  56     function get_text()
  57     {
  58         // FIXME: this should be in a child class (and is incorrect)
  59 //    if ( $this->_frame->get_style()->content !== "normal" ) {
  60 //      $this->_frame->get_node()->data = $this->_frame->get_style()->content;
  61 //      $this->_frame->get_style()->content = "normal";
  62 //    }
  63
  64 //      Helpers::pre_r("---");
  65 //      $style = $this->_frame->get_style();
  66 //      var_dump($text = $this->_frame->get_node()->data);
  67 //      var_dump($asc = utf8_decode($text));
  68 //      for ($i = 0; $i < strlen($asc); $i++)
  69 //        Helpers::pre_r("$i: " . $asc[$i] . " - " . ord($asc[$i]));
  70 //      Helpers::pre_r("width: " . $this->_dompdf->getFontMetrics()->getTextWidth($text, $style->font_family, $style->font_size));
  71
  72         return $this->_frame->get_node()->data;
  73     }
  74
  75     //........................................................................
  76
  77     // Vertical margins & padding do not apply to text frames
  78
  79     // http://www.w3.org/TR/CSS21/visudet.html#inline-non-replaced:
  80     //
  81     // The vertical padding, border and margin of an inline, non-replaced box
  82     // start at the top and bottom of the content area, not the
  83     // 'line-height'. But only the 'line-height' is used to calculate the
  84     // height of the line box.
  85     function get_margin_height()
  86     {
  87         // This function is called in add_frame_to_line() and is used to
  88         // determine the line height, so we actually want to return the
  89         // 'line-height' property, not the actual margin box
  90         $style = $this->get_parent()->get_style();
  91         $font = $style->font_family;
  92         $size = $style->font_size;
  93
  94         /*
  95         Helpers::pre_r('-----');
  96         Helpers::pre_r($style->line_height);
  97         Helpers::pre_r($style->font_size);
  98         Helpers::pre_r($this->_dompdf->getFontMetrics()->getFontHeight($font, $size));
  99         Helpers::pre_r(($style->line_height / $size) * $this->_dompdf->getFontMetrics()->getFontHeight($font, $size));
 100         */
 101
 102         return ($style->line_height / ($size > 0 ? $size : 1)) * $this->_dompdf->getFontMetrics()->getFontHeight($font, $size);
 103
 104     }
 105
 106     function get_padding_box()
 107     {
 108         $pb = $this->_frame->get_padding_box();
 109         $pb[3] = $pb["h"] = $this->_frame->get_style()->height;
 110
 111         return $pb;
 112     }
 113     //........................................................................
 114
 115     // Set method
 116     function set_text_spacing($spacing)
 117     {
 118         $style = $this->_frame->get_style();
 119
 120         $this->_text_spacing = $spacing;
 121         $char_spacing = $style->length_in_pt($style->letter_spacing);
 122
 123         // Re-adjust our width to account for the change in spacing
 124         $style->width = $this->_dompdf->getFontMetrics()->getTextWidth($this->get_text(), $style->font_family, $style->font_size, $spacing, $char_spacing);
 125     }
 126
 127     //........................................................................
 128
 129     // Recalculate the text width
 130     function recalculate_width()
 131     {
 132         $style = $this->get_style();
 133         $text = $this->get_text();
 134         $size = $style->font_size;
 135         $font = $style->font_family;
 136         $word_spacing = $style->length_in_pt($style->word_spacing);
 137         $char_spacing = $style->length_in_pt($style->letter_spacing);
 138
 139         return $style->width = $this->_dompdf->getFontMetrics()->getTextWidth($text, $font, $size, $word_spacing, $char_spacing);
 140     }
 141
 142     //........................................................................
 143
 144     // Text manipulation methods
 145
 146     // split the text in this frame at the offset specified.  The remaining
 147     // text is added a sibling frame following this one and is returned.
 148     function split_text($offset)
 149     {
 150         if ($offset == 0) {
 151             return null;
 152         }
 153
 154         $split = $this->_frame->get_node()->splitText($offset);
 155
 156         $deco = $this->copy($split);
 157
 158         $p = $this->get_parent();
 159         $p->insert_child_after($deco, $this, false);
 160
 161         if ($p instanceof Inline) {
 162             $p->split($deco);
 163         }
 164
 165         return $deco;
 166     }
 167
 168     //........................................................................
 169
 170     function delete_text($offset, $count)
 171     {
 172         $this->_frame->get_node()->deleteData($offset, $count);
 173     }
 174
 175     //........................................................................
 176
 177     function set_text($text)
 178     {
 179         $this->_frame->get_node()->data = $text;
 180     }
 181
 182 }