source-class-Com.Tecnick.Pdf.Font.Font

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<?php
/**
 * Font.php
 *
 * @since       2011-05-23
 * @category    Library
 * @package     PdfFont
 * @author      Nicola Asuni <info@tecnick.com>
 * @copyright   2011-2015 Nicola Asuni - Tecnick.com LTD
 * @license     http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
 * @link        https://github.com/tecnickcom/tc-lib-pdf-font
 *
 * This file is part of tc-lib-pdf-font software library.
 */

namespace Com\Tecnick\Pdf\Font;

use \Com\Tecnick\Pdf\Font\Exception as FontException;

/**
 * Com\Tecnick\Pdf\Font\Font
 *
 * @since       2011-05-23
 * @category    Library
 * @package     PdfFont
 * @author      Nicola Asuni <info@tecnick.com>
 * @copyright   2011-2015 Nicola Asuni - Tecnick.com LTD
 * @license     http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
 * @link        https://github.com/tecnickcom/tc-lib-pdf-font
 */
class Font extends \Com\Tecnick\Pdf\Font\Load
{
    /**
     * Font data
     *
     * @var array
     */
    protected $data = array(
        'n'           => 0,              // PDF object number
        'i'           => 0,              // font number
        'key'         => '',             // font key
        'ifile'       => '',             // JSON font file
        'family'      => '',             // font family name
        'unicode'     => true,           // unicode mode
        'pdfa'        => false,          // PDF/A mode
        'style'       => '',             // font style string
        'fakestyle'   => false,          // emulated style
        'mode'        => array(
            'bold'        => false,
            'italic'      => false,
            'underline'   => false,
            'linethrough' => false,
            'overline'    => false
        ),
        'type'        => '',
        'name'        => '',
        'desc'        => array(),
        'up'          => -100,
        'ut'          => 50,
        'cw'          => array(),
        'cbbox'       => array(),
        'dw'          => 0,
        'enc'         => '',
        'cidinfo'     => array(
            'Registry'    => 'Adobe',
            'Ordering'    => 'Identity',
            'Supplement'  => 0,
            'uni2cid'     => array()
        ),
        'file'        => '',             // original font file
        'dir'         => '',             // font directory
        'ctg'         => '',             // font CTG file
        'diff'        => '',             // encoding differences
        'diff_n'      => 0,              // object ID of the difference object
        'subset'      => false,          // True if the font is subset
        'subsetchars' => array(),        // subset characters
    );

    /**
     * Load an imported font
     *
     * The definition file (and the font file itself when embedding) must be present either in the current directory
     * or in the one indicated by K_PATH_FONTS if the constant is defined.
     *
     * @param string $font   Font family.
     *                       If it is a standard family name, it will override the corresponding font.
     * @param string $style  Font style.
     *                       Possible values are (case insensitive):
     *                          regular (default)
     *                          B: bold
     *                          I: italic
     *                          U: underline
     *                          D: strikeout (linethrough)
     *                          O: overline
     * @param string $ifile  The font definition file (or empty for autodetect).
     *                       By default, the name is built from the family and style, in lower case with no spaces.
     * @param bool   $subset If true embedd only a subset of the font
     *                       (stores only the information related to the used characters);
     *                       If false embedd full font;
     *                       This option is valid only for TrueTypeUnicode fonts and it is disabled for PDF/A.
     *                       If you want to enable users to modify the document, set this parameter to false.
     *                       If you subset the font, the person who receives your PDF would need to have
     *                       your same font in order to make changes to your PDF.
     *                       The file size of the PDF would also be smaller because you are embedding only a subset.
     * @param bool $unicode  True if we are in Unicode mode, False otherwhise.
     * @param bool $pdfa     True if we are in PDF/A mode.
     *
     * @throws FontException in case of error
     */
    public function __construct($font, $style = '', $ifile = '', $subset = false, $unicode = true, $pdfa = false)
    {
        if (empty($font)) {
            throw new FontException('empty font family name');
        }
        $this->data['ifile'] = $ifile;
        $this->data['family'] = $font;
        $this->data['unicode'] = (bool) $unicode;
        $this->data['pdfa'] = (bool) $pdfa;
        $this->data['subset'] = $subset;
        $this->data['subsetchars'] = array_fill(0, 255, true);
        
        // generate the font key and set styles
        $this->setStyle($style);
    }

    /**
     * Get the font key
     *
     * @return string
     */
    public function getFontkey()
    {
        return $this->data['key'];
    }

    /**
     * Get the font data
     *
     * @return string
     */
    public function getFontData()
    {
        return $this->data;
    }

    /**
     * Set style and normalize the font name
     *
     * @param string $style Style
     */
    protected function setStyle($style)
    {
        $style = strtoupper($style);
        if (substr($this->data['family'], -1) == 'I') {
            $style .= 'I';
            $this->data['family'] = substr($this->data['family'], 0, -1);
        }
        if (substr($this->data['family'], -1) == 'B') {
            $style .= 'B';
            $this->data['family'] = substr($this->data['family'], 0, -1);
        }
        // normalize family name
        $this->data['family'] = strtolower($this->data['family']);
        if ((!$this->data['unicode']) && ($this->data['family'] == 'arial')) {
            $this->data['family'] = 'helvetica';
        }
        if (($this->data['family'] == 'symbol') || ($this->data['family'] == 'zapfdingbats')) {
            $style = '';
        }
        if ($this->data['pdfa'] && (isset(Core::$font[$this->data['family']]))) {
            // core fonts must be embedded in PDF/A
            $this->data['family'] = 'pdfa'.$this->data['family'];
        }
        $this->setStyleMode($style);
    }

    /**
     * Set style mode properties
     *
     * @param string $style Style
     *
     * @return string Style
     */
    protected function setStyleMode($style)
    {
        $suffix = '';
        if (strpos($style, 'B') !== false) {
            $this->data['mode']['bold'] = true;
            $suffix .= 'B';
        }
        if (strpos($style, 'I') !== false) {
            $this->data['mode']['italic'] = true;
            $suffix .= 'I';
        }
        $this->data['style'] = $suffix;
        if (strpos($style, 'U') !== false) {
            $this->data['mode']['underline'] = true;
            $this->data['style'] .= 'U';
        }
        if (strpos($style, 'D') !== false) {
            $this->data['mode']['linethrough'] = true;
            $this->data['style'] .= 'D';
        }
        if (strpos($style, 'O') !== false) {
            $this->data['mode']['overline'] = true;
            $this->data['style'] .= 'O';
        }
        $this->data['key'] = $this->data['family'].$suffix;
    }
}
 

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