/** * @param string $text * @param AnchorPath $p * @param FontStyle $fontStyle * * @return mixed[] * @throws \Exception */ private function preparePathText($text, AnchorPath $p, ZendAbstractFont $font, FontStyle $fontStyle) { $fontScale = $fontStyle->getSize() / (double) $font->getUnitsPerEm(); // split text into encoded characters and widths $chars = []; $widthSum = 0; foreach (TextUtils::getCodes($text) as $code) { $char = $font->encodeString(html_entity_decode('&#' . $code . ';', ENT_NOQUOTES, 'UTF-8'), 'UTF-8'); $width = $font->widthForGlyph($font->glyphNumberForCharacter($code)); $widthSum += $width; $chars[] = [$char, $fontScale * $width]; } // compute start position switch ($fontStyle->getHAlign()) { case FontStyle::HORIZONTAL_ALIGN_MIDDLE: $startPos = ($p->getLen() - $fontScale * $widthSum) / 2.0; break; case FontStyle::HORIZONTAL_ALIGN_RIGHT: $startPos = $p->getLen() - $fontScale * $widthSum; break; case FontStyle::HORIZONTAL_ALIGN_LEFT: default: $startPos = 0; } // compute vertical shift switch ($fontStyle->getVAlign()) { case FontStyle::VERTICAL_ALIGN_TOP: $yShift = $fontScale * ($font->getAscent() - $font->getDescent()); break; case FontStyle::VERTICAL_ALIGN_CENTRAL: $yShift = 0.5 * $fontScale * $font->getAscent(); break; case FontStyle::VERTICAL_ALIGN_BOTTOM: $yShift = $fontScale * $font->getDescent(); break; case FontStyle::VERTICAL_ALIGN_BASE: default: $yShift = 0; } return [$chars, $startPos, $yShift]; }