/library/dompdf/include/text_renderer.cls.php
PHP | 136 lines | 58 code | 29 blank | 49 comment | 18 complexity | 97feaf787762d1d8211e1ae69d0bb314 MD5 | raw file
Possible License(s): GPL-3.0, LGPL-2.1
- <?php
- /**
- * DOMPDF - PHP5 HTML to PDF renderer
- *
- * File: $RCSfile: text_renderer.cls.php,v $
- * Created on: 2004-06-01
- *
- * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library in the file LICENSE.LGPL; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA
- *
- * Alternatively, you may distribute this software under the terms of the
- * PHP License, version 3.0 or later. A copy of this license should have
- * been distributed with this file in the file LICENSE.PHP . If this is not
- * the case, you can obtain a copy at http://www.php.net/license/3_0.txt.
- *
- * The latest version of DOMPDF might be available at:
- * http://www.digitaljunkies.ca/dompdf
- *
- * @link http://www.digitaljunkies.ca/dompdf
- * @copyright 2004 Benj Carson
- * @author Benj Carson <benjcarson@digitaljunkies.ca>
- * @package dompdf
- * @version 0.5.1
- */
- /* $Id: text_renderer.cls.php,v 1.5 2006/07/07 21:31:05 benjcarson Exp $ */
- /**
- * Renders text frames
- *
- * @access private
- * @package dompdf
- */
- class Text_Renderer extends Abstract_Renderer {
- const UNDERLINE_OFFSET = 0.1; // Relative to bottom of text, as fraction of height
- const OVERLINE_OFFSET = 0.25; // Relative to top of text, "
- const LINETHROUGH_OFFSET = 0.0; // Relative to centre of text, "
- const DECO_EXTENSION = 0.75; // How far to extend lines past either end, in pt
-
- //........................................................................
- 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);
- }
- }
- }
- ?>