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1<?php
2/**
3 * This file is part of PHPWord - A pure PHP library for reading and writing
4 * word processing documents.
5 *
6 * PHPWord is free software distributed under the terms of the GNU Lesser
7 * General Public License version 3 as published by the Free Software Foundation.
8 *
9 * For the full copyright and license information, please read the LICENSE
10 * file that was distributed with this source code. For the full list of
11 * contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
12 *
13 * @see         https://github.com/PHPOffice/PHPWord
14 *
15 * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
16 */
17
18namespace PhpOffice\PhpWord\Writer\HTML\Style;
19
20use PhpOffice\PhpWord\Style\Font as FontStyle;
21
22/**
23 * Font style HTML writer.
24 *
25 * @since 0.10.0
26 */
27class Font extends AbstractStyle
28{
29    /**
30     * Write style.
31     *
32     * @return string
33     */
34    public function write()
35    {
36        $style = $this->getStyle();
37        if (!$style instanceof FontStyle) {
38            return '';
39        }
40        $css = [];
41
42        $font = $this->getFontFamily($style->getName(), $style->getFallbackFont());
43        $size = $style->getSize();
44        $color = $style->getColor();
45        $fgColor = $style->getFgColor();
46        $underline = $style->getUnderline() != FontStyle::UNDERLINE_NONE;
47        $lineThrough = $style->isStrikethrough() || $style->isDoubleStrikethrough();
48
49        $css['font-family'] = $this->getValueIf(!empty($font), $font);
50        $css['font-size'] = $this->getValueIf($size !== null, "{$size}pt");
51        $css['color'] = $this->getValueIf($color !== null, "#{$color}");
52        $css['background'] = $this->getValueIf($fgColor != '', $fgColor);
53        $css['font-weight'] = $this->getValueIf($style->isBold(), 'bold');
54        $css['font-style'] = $this->getValueIf($style->isItalic(), 'italic');
55        $css['vertical-align'] = '';
56        $css['vertical-align'] .= $this->getValueIf($style->isSuperScript(), 'super');
57        $css['vertical-align'] .= $this->getValueIf($style->isSubScript(), 'sub');
58        $css['text-decoration'] = '';
59        $css['text-decoration'] .= $this->getValueIf($underline, 'underline ');
60        $css['text-decoration'] .= $this->getValueIf($lineThrough, 'line-through ');
61        $css['text-transform'] = $this->getValueIf($style->isAllCaps(), 'uppercase');
62        $css['font-variant'] = $this->getValueIf($style->isSmallCaps(), 'small-caps');
63        $css['display'] = $this->getValueIf($style->isHidden(), 'none');
64        $whitespace = $style->getWhiteSpace();
65        if ($whitespace) {
66            $css['white-space'] = $whitespace;
67        }
68
69        $spacing = $style->getSpacing();
70        $css['letter-spacing'] = $this->getValueIf(null !== $spacing, ($spacing / 20) . 'pt');
71        if ($style->isRTL()) {
72            $css['direction'] = 'rtl';
73        } elseif ($style->isRTL() === false) {
74            $css['direction'] = 'ltr';
75        }
76
77        return $this->assembleCss($css);
78    }
79
80    /**
81     * Set font and alternates for css font-family.
82     */
83    private function getFontFamily(?string $font, string $genericFont): string
84    {
85        if (empty($font)) {
86            return '';
87        }
88        $fontfamily = "'" . htmlspecialchars($font, ENT_QUOTES, 'UTF-8') . "'";
89        if (!empty($genericFont)) {
90            $fontfamily .= ", $genericFont";
91        }
92
93        return $fontfamily;
94    }
95}