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