/**
* Returns the 'value' channel of @color in the HSV space
*
* @param ColorNode $color
* @return string
*/
public function hsvvalue(Node $color)
{
if (!$color instanceof ColorNode) {
return $color;
}
$hsv = $color->toHSV();
return new DimensionNode(Math::round($hsv['v'] * 100), '%');
}
/**
* @covers round
* @dataProvider getDataForRoundTest
*/
public function testRound($value, $precision, $expected)
{
$this->assertEquals($expected, Math::round($value, $precision), sprintf('Rounding of "%s" with precision "%s" works', $value, $precision));
}
/**
* Returns the color as HEX string (when transparency present, in RGBA model)
*
* @param boolean $compress Compress the color?
* @param boolean $canShorten Can the color be shortened if possible?
* @return string
*/
public function toString($compress = false, $canShorten = false)
{
if ($this->isTransparentKeyword) {
return 'transparent';
}
if ($this->originalForm) {
return $this->originalForm;
}
$alpha = Math::toFixed($this->alpha + 2.0E-16, 8);
if ($alpha < 1) {
$fixedRGB = $this->getFixedRGB();
return sprintf('rgba(%s)', join($compress ? ',' : ', ', [$fixedRGB[0], $fixedRGB[1], $fixedRGB[2], Math::clean($this->clamp($alpha, 1))]));
}
// prevent named colors
if ($this->keyword) {
return $this->keyword;
}
$color = [];
foreach ($this->getFixedRgb() as $i) {
$color[] = str_pad(dechex(Math::round($i)), 2, '0', STR_PAD_LEFT);
}
$color = join('', $color);
// convert color to short format
if ($canShorten && $color[0] === $color[1] && $color[2] === $color[3] && $color[4] === $color[5]) {
$color = $color[0] . $color[2] . $color[4];
}
$color = '#' . $color;
return $color;
}