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PHP TCPDF_STATIC::_getSHORT方法代码示例

本文整理汇总了PHP中TCPDF_STATIC::_getSHORT方法的典型用法代码示例。如果您正苦于以下问题:PHP TCPDF_STATIC::_getSHORT方法的具体用法?PHP TCPDF_STATIC::_getSHORT怎么用?PHP TCPDF_STATIC::_getSHORT使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在TCPDF_STATIC的用法示例。


在下文中一共展示了TCPDF_STATIC::_getSHORT方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的PHP代码示例。

示例1: _getTrueTypeFontSubset

	/**
	 * Returns a subset of the TrueType font data without the unused glyphs.
	 * @param $font (string) TrueType font data.
	 * @param $subsetchars (array) Array of used characters (the glyphs to keep).
	 * @return (string) A subset of TrueType font data without the unused glyphs.
	 * @author Nicola Asuni
	 * @since 5.2.000 (2010-06-02)
	 * @public static
	 */
	public static function _getTrueTypeFontSubset($font, $subsetchars) {
		ksort($subsetchars);
		$offset = 0; // offset position of the font data
		if (TCPDF_STATIC::_getULONG($font, $offset) != 0x10000) {
			// sfnt version must be 0x00010000 for TrueType version 1.0.
			return $font;
		}
		$offset += 4;
		// get number of tables
		$numTables = TCPDF_STATIC::_getUSHORT($font, $offset);
		$offset += 2;
		// skip searchRange, entrySelector and rangeShift
		$offset += 6;
		// tables array
		$table = array();
		// for each table
		for ($i = 0; $i < $numTables; ++$i) {
			// get table info
			$tag = substr($font, $offset, 4);
			$offset += 4;
			$table[$tag] = array();
			$table[$tag]['checkSum'] = TCPDF_STATIC::_getULONG($font, $offset);
			$offset += 4;
			$table[$tag]['offset'] = TCPDF_STATIC::_getULONG($font, $offset);
			$offset += 4;
			$table[$tag]['length'] = TCPDF_STATIC::_getULONG($font, $offset);
			$offset += 4;
		}
		// check magicNumber
		$offset = $table['head']['offset'] + 12;
		if (TCPDF_STATIC::_getULONG($font, $offset) != 0x5F0F3CF5) {
			// magicNumber must be 0x5F0F3CF5
			return $font;
		}
		$offset += 4;
		// get offset mode (indexToLocFormat : 0 = short, 1 = long)
		$offset = $table['head']['offset'] + 50;
		$short_offset = (TCPDF_STATIC::_getSHORT($font, $offset) == 0);
		$offset += 2;
		// get the offsets to the locations of the glyphs in the font, relative to the beginning of the glyphData table
		$indexToLoc = array();
		$offset = $table['loca']['offset'];
		if ($short_offset) {
			// short version
			$tot_num_glyphs = floor($table['loca']['length'] / 2); // numGlyphs + 1
			for ($i = 0; $i < $tot_num_glyphs; ++$i) {
				$indexToLoc[$i] = TCPDF_STATIC::_getUSHORT($font, $offset) * 2;
				$offset += 2;
			}
		} else {
			// long version
			$tot_num_glyphs = ($table['loca']['length'] / 4); // numGlyphs + 1
			for ($i = 0; $i < $tot_num_glyphs; ++$i) {
				$indexToLoc[$i] = TCPDF_STATIC::_getULONG($font, $offset);
				$offset += 4;
			}
		}
		// get glyphs indexes of chars from cmap table
		$subsetglyphs = array(); // glyph IDs on key
		$subsetglyphs[0] = true; // character codes that do not correspond to any glyph in the font should be mapped to glyph index 0
		$offset = $table['cmap']['offset'] + 2;
		$numEncodingTables = TCPDF_STATIC::_getUSHORT($font, $offset);
		$offset += 2;
		$encodingTables = array();
		for ($i = 0; $i < $numEncodingTables; ++$i) {
			$encodingTables[$i]['platformID'] = TCPDF_STATIC::_getUSHORT($font, $offset);
			$offset += 2;
			$encodingTables[$i]['encodingID'] = TCPDF_STATIC::_getUSHORT($font, $offset);
			$offset += 2;
			$encodingTables[$i]['offset'] = TCPDF_STATIC::_getULONG($font, $offset);
			$offset += 4;
		}
		foreach ($encodingTables as $enctable) {
			// get all platforms and encodings
			$offset = $table['cmap']['offset'] + $enctable['offset'];
			$format = TCPDF_STATIC::_getUSHORT($font, $offset);
			$offset += 2;
			switch ($format) {
				case 0: { // Format 0: Byte encoding table
					$offset += 4; // skip length and version/language
					for ($c = 0; $c < 256; ++$c) {
						if (isset($subsetchars[$c])) {
							$g = TCPDF_STATIC::_getBYTE($font, $offset);
							$subsetglyphs[$g] = true;
						}
						++$offset;
					}
					break;
				}
				case 2: { // Format 2: High-byte mapping through table
					$offset += 4; // skip length and version/language
//.........这里部分代码省略.........
开发者ID:elcharlygraf,项目名称:Encuesta-YiiFramework,代码行数:101,代码来源:tcpdf_fonts.php


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