/**
* @param Path $path
* @param float $length
* @param Anchor[] $anchors
*
* @dataProvider anchorPathProvider
*/
public function testAnchorPath(Path $path, $length, array $anchors)
{
$anchorPath = new AnchorPath($path);
$this->assertSame($length == 0, $anchorPath->isEmpty());
$this->assertSame($length, $anchorPath->getLen());
$a = [];
foreach ($anchors as $pos => $anchor) {
$a[$pos] = $anchorPath->getAnchor((double) $pos);
}
$this->assertEquals($anchors, $a);
}
/**
* @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];
}
