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<?php |
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/** |
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* @package php-font-lib |
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* @link https://github.com/dompdf/php-font-lib |
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* @author Fabien Ménager <[email protected]> |
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License |
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*/ |
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|
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namespace FontLib; |
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|
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use FontLib\Table\Type\name; |
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use FontLib\TrueType\File; |
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|
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/** |
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* Adobe Font Metrics file creation utility class. |
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* |
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* @package php-font-lib |
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*/ |
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class AdobeFontMetrics { |
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private $f; |
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|
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/** |
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* @var File |
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*/ |
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private $font; |
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|
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function __construct(File $font) { |
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$this->font = $font; |
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} |
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|
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function write($file, $encoding = null) { |
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$map_data = array(); |
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|
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if ($encoding) { |
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$encoding = preg_replace("/[^a-z0-9-_]/", "", $encoding); |
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$map_file = dirname(__FILE__) . "/../../maps/$encoding.map"; |
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if (!file_exists($map_file)) { |
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throw new \Exception("Unknown encoding ($encoding)"); |
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} |
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|
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$map = new EncodingMap($map_file); |
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$map_data = $map->parse(); |
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} |
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|
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$this->f = fopen($file, "w+"); |
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|
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$font = $this->font; |
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|
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$this->startSection("FontMetrics", 4.1); |
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$this->addPair("Notice", "Converted by PHP-font-lib"); |
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$this->addPair("Comment", "https://github.com/dompdf/php-font-lib"); |
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|
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$encoding_scheme = ($encoding ? $encoding : "FontSpecific"); |
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$this->addPair("EncodingScheme", $encoding_scheme); |
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|
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$records = $font->getData("name", "records"); |
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foreach ($records as $id => $record) { |
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if (!isset(name::$nameIdCodes[$id]) || preg_match("/[\r\n]/", $record->string)) { |
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continue; |
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} |
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|
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$this->addPair(name::$nameIdCodes[$id], $record->string); |
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} |
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|
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$os2 = $font->getData("OS/2"); |
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$this->addPair("Weight", ($os2["usWeightClass"] > 400 ? "Bold" : "Medium")); |
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|
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$post = $font->getData("post"); |
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$this->addPair("ItalicAngle", $post["italicAngle"]); |
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$this->addPair("IsFixedPitch", ($post["isFixedPitch"] ? "true" : "false")); |
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$this->addPair("UnderlineThickness", $font->normalizeFUnit($post["underlineThickness"])); |
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$this->addPair("UnderlinePosition", $font->normalizeFUnit($post["underlinePosition"])); |
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|
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$hhea = $font->getData("hhea"); |
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|
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if (isset($hhea["ascent"])) { |
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$this->addPair("FontHeightOffset", $font->normalizeFUnit($hhea["lineGap"])); |
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} |
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else { |
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$this->addPair("FontHeightOffset", $font->normalizeFUnit($os2["typoLineGap"])); |
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} |
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|
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$glyf = $font->getData("glyf"); |
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$glyphIndexArray = $font->getUnicodeCharMap(); |
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$hasGlyphs = $glyf instanceof glyf && is_array($glyphIndexArray); |
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|
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// capHeight is based on capital H |
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if ($hasGlyphs && \array_key_exists(72, $glyphIndexArray)) { |
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$upperH = $glyf[$glyphIndexArray[72]]; |
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$upperH->parseData(); |
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$this->addPair("CapHeight", $font->normalizeFUnit($upperH->yMax)); |
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} |
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|
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// xHeight is based on lowercase x |
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if ($hasGlyphs && \array_key_exists(120, $glyphIndexArray)) { |
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$lowerX = $glyf[$glyphIndexArray[120]]; |
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$lowerX->parseData(); |
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$this->addPair("XHeight", $font->normalizeFUnit($lowerX->yMax)); |
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} |
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|
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// ascender is based on lowercase d |
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if ($hasGlyphs && \array_key_exists(100, $glyphIndexArray)) { |
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$lowerD = $glyf[$glyphIndexArray[100]]; |
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$lowerD->parseData(); |
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$this->addPair("Ascender", $font->normalizeFUnit($lowerD->yMax)); |
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} elseif (isset($hhea["ascent"])) { |
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$this->addPair("Ascender", $font->normalizeFUnit($hhea["ascent"])); |
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} |
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else { |
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$this->addPair("Ascender", $font->normalizeFUnit($os2["typoAscender"])); |
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} |
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|
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// descender is based on lowercase p |
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if ($hasGlyphs && \array_key_exists(112, $glyphIndexArray)) { |
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$lowerP = $glyf[$glyphIndexArray[112]]; |
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$lowerP->parseData(); |
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$this->addPair("Descender", $font->normalizeFUnit($lowerP->yMin)); |
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} elseif (isset($hhea["descent"])) { |
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$this->addPair("Descender", $font->normalizeFUnit($hhea["descent"])); |
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} |
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else { |
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$this->addPair("Descender", -abs($font->normalizeFUnit($os2["typoDescender"]))); |
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} |
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|
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$head = $font->getData("head"); |
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$this->addArray("FontBBox", array( |
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$font->normalizeFUnit($head["xMin"]), |
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$font->normalizeFUnit($head["yMin"]), |
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$font->normalizeFUnit($head["xMax"]), |
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$font->normalizeFUnit($head["yMax"]), |
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)); |
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|
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if ($glyphIndexArray) { |
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$hmtx = $font->getData("hmtx"); |
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$names = $font->getData("post", "names"); |
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|
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$this->startSection("CharMetrics", count($hmtx)); |
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|
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if ($encoding) { |
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foreach ($map_data as $code => $value) { |
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list($c, $name) = $value; |
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|
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if (!isset($glyphIndexArray[$c])) { |
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continue; |
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} |
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|
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$g = $glyphIndexArray[$c]; |
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|
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if (!isset($hmtx[$g])) { |
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$hmtx[$g] = $hmtx[0]; |
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} |
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|
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$this->addMetric(array( |
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"C" => ($code > 255 ? -1 : $code), |
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"WX" => $font->normalizeFUnit($hmtx[$g][0]), |
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"N" => $name, |
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)); |
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} |
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} |
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else { |
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foreach ($glyphIndexArray as $c => $g) { |
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if (!isset($hmtx[$g])) { |
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$hmtx[$g] = $hmtx[0]; |
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} |
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|
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$this->addMetric(array( |
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"U" => $c, |
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"WX" => $font->normalizeFUnit($hmtx[$g][0]), |
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"N" => (isset($names[$g]) ? $names[$g] : sprintf("uni%04x", $c)), |
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"G" => $g, |
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)); |
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} |
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} |
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|
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$this->endSection("CharMetrics"); |
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|
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$kern = $font->getData("kern", "subtable"); |
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$tree = is_array($kern) ? $kern["tree"] : null; |
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|
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if (!$encoding && is_array($tree)) { |
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$this->startSection("KernData"); |
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$this->startSection("KernPairs", count($tree, COUNT_RECURSIVE) - count($tree)); |
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|
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foreach ($tree as $left => $values) { |
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if (!is_array($values)) { |
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continue; |
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} |
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if (!isset($glyphIndexArray[$left])) { |
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continue; |
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} |
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|
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$left_gid = $glyphIndexArray[$left]; |
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|
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if (!isset($names[$left_gid])) { |
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continue; |
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} |
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|
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$left_name = $names[$left_gid]; |
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|
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$this->addLine(""); |
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|
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foreach ($values as $right => $value) { |
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if (!isset($glyphIndexArray[$right])) { |
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continue; |
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} |
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|
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$right_gid = $glyphIndexArray[$right]; |
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|
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if (!isset($names[$right_gid])) { |
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continue; |
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} |
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|
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$right_name = $names[$right_gid]; |
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$this->addPair("KPX", "$left_name $right_name $value"); |
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} |
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} |
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|
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$this->endSection("KernPairs"); |
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$this->endSection("KernData"); |
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} |
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} |
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|
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$this->endSection("FontMetrics"); |
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} |
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|
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function addLine($line) { |
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fwrite($this->f, "$line\n"); |
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} |
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|
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function addPair($key, $value) { |
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$this->addLine("$key $value"); |
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} |
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|
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function addArray($key, $array) { |
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$this->addLine("$key " . implode(" ", $array)); |
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} |
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|
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function addMetric($data) { |
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$array = array(); |
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foreach ($data as $key => $value) { |
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$array[] = "$key $value"; |
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} |
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$this->addLine(implode(" ; ", $array)); |
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} |
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|
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function startSection($name, $value = "") { |
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$this->addLine("Start$name $value"); |
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} |
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|
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function endSection($name) { |
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$this->addLine("End$name"); |
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} |
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} |
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|
