[3019] | 1 | <?php |
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| 2 | /** |
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| 3 | * DOMPDF - PHP5 HTML to PDF renderer |
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| 4 | * |
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| 5 | * File: $RCSfile: list_bullet_positioner.cls.php,v $ |
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| 6 | * Created on: 2004-06-23 |
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| 7 | * |
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| 8 | * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca> |
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| 9 | * |
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| 10 | * This library is free software; you can redistribute it and/or |
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| 11 | * modify it under the terms of the GNU Lesser General Public |
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| 12 | * License as published by the Free Software Foundation; either |
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| 13 | * version 2.1 of the License, or (at your option) any later version. |
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| 14 | * |
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| 15 | * This library is distributed in the hope that it will be useful, |
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 18 | * Lesser General Public License for more details. |
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| 19 | * |
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| 20 | * You should have received a copy of the GNU Lesser General Public License |
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| 21 | * along with this library in the file LICENSE.LGPL; if not, write to the |
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| 22 | * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 23 | * 02111-1307 USA |
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| 24 | * |
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| 25 | * Alternatively, you may distribute this software under the terms of the |
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| 26 | * PHP License, version 3.0 or later. A copy of this license should have |
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| 27 | * been distributed with this file in the file LICENSE.PHP . If this is not |
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| 28 | * the case, you can obtain a copy at http://www.php.net/license/3_0.txt. |
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| 29 | * |
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| 30 | * The latest version of DOMPDF might be available at: |
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| 31 | * http://www.digitaljunkies.ca/dompdf |
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| 32 | * |
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| 33 | * @link http://www.digitaljunkies.ca/dompdf |
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| 34 | * @copyright 2004 Benj Carson |
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| 35 | * @author Benj Carson <benjcarson@digitaljunkies.ca> |
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| 36 | * @contributor Helmut Tischer <htischer@weihenstephan.org> |
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| 37 | * @package dompdf |
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| 38 | * @version 0.5.1 |
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| 39 | * |
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| 40 | * Changes |
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| 41 | * @contributor Helmut Tischer <htischer@weihenstephan.org> |
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| 42 | * @version 20090622 |
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| 43 | * - try to adjust top position of bullet to top corner of subsequent font |
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| 44 | */ |
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| 45 | |
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| 46 | /* $Id: list_bullet_positioner.cls.php 186 2009-10-19 22:42:06Z eclecticgeek@gmail.com $ */ |
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| 47 | |
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| 48 | /** |
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| 49 | * Positions list bullets |
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| 50 | * |
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| 51 | * @access private |
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| 52 | * @package dompdf |
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| 53 | */ |
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| 54 | class List_Bullet_Positioner extends Positioner { |
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| 55 | |
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| 56 | function __construct(Frame_Decorator $frame) { parent::__construct($frame); } |
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| 57 | |
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| 58 | //........................................................................ |
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| 59 | |
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| 60 | function position() { |
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| 61 | |
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| 62 | // Bullets & friends are positioned an absolute distance to the left of |
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| 63 | // the content edge of their parent element |
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| 64 | $cb = $this->_frame->get_containing_block(); |
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| 65 | $style = $this->_frame->get_style(); |
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| 66 | |
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| 67 | // Note: this differs from most frames in that we must position |
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| 68 | // ourselves after determining our width |
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| 69 | $x = $cb["x"] - $this->_frame->get_width(); |
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| 70 | |
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| 71 | $p = $this->_frame->find_block_parent(); |
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| 72 | |
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| 73 | $y = $p->get_current_line("y"); |
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| 74 | |
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| 75 | // This is a bit of a hack... |
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| 76 | $n = $this->_frame->get_next_sibling(); |
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| 77 | if ( $n ) { |
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| 78 | $style = $n->get_style(); |
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| 79 | $y += $style->length_in_pt( array($style->margin_top, $style->padding_top), |
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| 80 | $n->get_containing_block("w") ); |
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| 81 | } |
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| 82 | |
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| 83 | // Now the position is the left top of the block which should be marked with the bullet. |
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| 84 | // We tried to find out the y of the start of the first text character within the block. |
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| 85 | // But the top margin/padding does not fit, neither from this nor from the next sibling |
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| 86 | // The "bit of a hack" above does not work also. |
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| 87 | |
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| 88 | // Instead let's position the bullet vertically centered to the block which should be marked. |
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| 89 | // But for get_next_sibling() the get_containing_block is all zero, and for find_block_parent() |
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| 90 | // the get_containing_block is paper width and the entire list as height. |
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| 91 | |
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| 92 | // if ($p) { |
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| 93 | // //$cb = $n->get_containing_block(); |
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| 94 | // $cb = $p->get_containing_block(); |
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| 95 | // $y += $cb["h"]/2; |
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| 96 | // print 'cb:'.$cb["x"].':'.$cb["y"].':'.$cb["w"].':'.$cb["h"].':'; |
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| 97 | // } |
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| 98 | |
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| 99 | // Todo: |
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| 100 | // For now give up on the above. Use Guesswork with font y-pos in the middle of the line spacing |
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| 101 | |
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| 102 | $style = $p->get_style(); |
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| 103 | $font_size = $style->get_font_size(); |
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| 104 | $line_height = $style->length_in_pt($style->line_height, $font_size); |
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| 105 | $y += ($line_height - $font_size) / 2; |
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| 106 | |
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| 107 | //Position is x-end y-top of character position of the bullet. |
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| 108 | $this->_frame->set_position($x, $y); |
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| 109 | |
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| 110 | } |
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| 111 | } |
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| 112 | ?> |
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