/**
* generate a font from a directory containing svg files (one file per glyph)
* by naming convention the file name can specify which character should be mapped to the glyph
* - my-icon.png => creates a glyph with the name 'my-icon' mapped to a character in the Unicode Private Use Area
* - my-icon-x263a.png => creates a glyph with the name 'my-icon' mapped to the unicode character U+263A "☺"
*
* @param string $path SVG path definition (consider the font coordinate system has an inverted y axis)
* @param array $fontOptions font options for the Font object
* @param boolean $renameSourceFiles if true, files without mapping information will be renamed
* @return static this
*/
public function generateFromDir($path, $fontOptions = array(), $renameSourceFiles = false)
{
$this->font = new Font($fontOptions);
$this->mapping = array();
$fontOptions = $this->font->getOptions();
$files = scandir($path);
foreach ($files as $fileName) {
if (strtolower(substr($fileName, -4)) === '.svg') {
if (preg_match('(^(.*)-x([0-9a-f]{2,6})\\.svg$)i', $fileName, $matches)) {
$iconName = strtolower($matches[1]);
$iconCode = static::hexToUnicode(strtolower($matches[2]));
if (isset($this->mapping[$iconCode])) {
throw new \Exception('Duplicate glyph ' . $iconCode . ' ' . $iconName);
}
$this->mapping[$iconCode] = array('path' => $path . DIRECTORY_SEPARATOR . $fileName, 'name' => $iconName);
}
}
}
foreach ($files as $fileName) {
if (strtolower(substr($fileName, -4)) === '.svg') {
if (!preg_match('(^(.*)-x([0-9a-f]{2,6})\\.svg$)i', $fileName)) {
$iconName = strtolower(substr($fileName, 0, -4));
$code = hexdec('e001');
while (isset($this->mapping[static::hexToUnicode(dechex($code))])) {
$code++;
}
if ($renameSourceFiles) {
if (!rename($path . DIRECTORY_SEPARATOR . $fileName, $path . DIRECTORY_SEPARATOR . $iconName . '-x' . dechex($code) . '.svg')) {
throw new \Exception('unable to rename "' . $path . DIRECTORY_SEPARATOR . $fileName . '"');
}
$fileName = $iconName . '-x' . dechex($code) . '.svg';
}
$this->mapping[static::hexToUnicode(dechex($code))] = array('path' => $path . DIRECTORY_SEPARATOR . $fileName, 'name' => $iconName);
}
}
}
foreach ($this->mapping as $code => $icon) {
try {
$iconDoc = new Document(file_get_contents($icon['path']));
$viewBox = $iconDoc->getViewBox();
$this->font->addGlyph($code, $iconDoc->getPath($fontOptions['units-per-em'] / $viewBox['height'], null, 'vertical', true, 0, $fontOptions['descent']), $icon['name'], round($viewBox['width'] * $fontOptions['units-per-em'] / $viewBox['height']));
} catch (\Exception $e) {
throw new \Exception(basename($icon['path']) . ': ' . $e->getMessage());
}
}
return $this;
}
