/**
* Creates the variable. Detects the type.
*
* @param string $name The name of the variable
* @param mixed $value The value of the variable
* @return ILess_Variable
*/
public static function create($name, $value)
{
$important = false;
// name is marked as !name
if (strpos($name, '!') === 0) {
$important = true;
$name = substr($name, 1);
}
// Color
if (ILess_Color::isNamedColor($value) || strtolower($value) === 'transparent' || strpos($value, '#') === 0) {
$value = new ILess_Node_Color(new ILess_Color($value));
} elseif (preg_match(self::RGBA_COLOR_REGEXP, $value, $matches)) {
// RGB(A) colors
$value = new ILess_Node_Color(new ILess_Color(array($matches[1], $matches[2], $matches[3]), isset($matches[4]) ? $matches[4] : 1));
} elseif (preg_match(self::QUOTED_REGEXP, $value, $matches)) {
$value = new ILess_Node_Quoted($matches[0], $matches[0][0] == '"' ? $matches[1] : $matches[2]);
} elseif (strpos($value, 'http://') === 0 || strpos($value, 'https://') === 0) {
$value = new ILess_Node_Anonymous($value);
} elseif (preg_match(self::DIMENSION_REGEXP, $value, $matches)) {
$value = new ILess_Node_Dimension($matches[1], isset($matches[2]) ? $matches[2] : null);
} else {
$value = new ILess_Node_Anonymous($value);
}
return new ILess_Variable($name, $value, $important);
}
/**
* @covers toString
*/
public function testToString()
{
$color = new ILess_Color('#ffeeaa');
$this->assertEquals('#ffeeaa', $color->toString());
// the format remains the same
$color = new ILess_Color('#fea');
$this->assertEquals('#ffeeaa', $color->toString());
$color = new ILess_Color('#ff0000');
$this->assertEquals('#ff0000', $color->toString());
$this->assertEquals(255, $color->getRed());
$this->assertEquals(0, $color->getGreen());
$this->assertEquals(0, $color->getBlue());
$color = new ILess_Color('#f60000');
$this->assertEquals('#f60000', $color->toString());
$this->assertEquals(246, $color->getRed());
$this->assertEquals(0, $color->getGreen());
$this->assertEquals(0, $color->getBlue());
}
/**
* Operations have to be done per-channel, if not,
* channels will spill onto each other. Once we have
* our result, in the form of an integer triplet,
* we create a new color node to hold the result.
*
* @param ILess_Environment $env
* @param string $op
* @param ILess_Node $other
* @return ILess_Node_Color
* @throws InvalidArgumentException
*/
public function operate(ILess_Environment $env, $op, ILess_Node $other)
{
$result = array();
if (!$other instanceof ILess_Node_Color) {
if (!self::methodExists($other, 'toColor')) {
throw new InvalidArgumentException('The other node must implement toColor() method to operate');
}
$other = $other->toColor();
if (!$other instanceof ILess_Node_Color) {
throw new InvalidArgumentException('The toColor() method must return an instance of ILess_Node_Color');
}
}
$t = $this->getRGB();
$o = $other->getRGB();
for ($c = 0; $c < 3; $c++) {
$result[$c] = ILess_Math::operate($op, $t[$c], $o[$c]);
if ($result[$c] > 255) {
$result[$c] = 255;
} elseif ($result < 0) {
$result[$c] = 0;
}
}
return new ILess_Node_Color($result, $this->color->getAlpha() + $other->color->getAlpha());
}
/**
* A catch-all word, such as: `black border-collapse`
*
* @return ILess_Node_Color|ILess_Node_Keyword
*/
protected function parseEntitiesKeyword()
{
if ($k = $this->matchReg('/\\G[_A-Za-z-][_A-Za-z0-9-]*/')) {
// detected named color and "transparent" keyword
if ($color = ILess_Color::fromKeyword($k)) {
return new ILess_Node_Color($color);
} else {
return new ILess_Node_Keyword($k);
}
}
}
/**
* Return a color 10% points *darker*
*
* @param ILess_Node $color
* @param ILess_Node
* @return string
* @throws InvalidArgumentException If the node is invalid
*/
public function darken(ILess_Node $color, ILess_Node_Dimension $percentage = null)
{
// this is a keyword
if ($color instanceof ILess_Node_Keyword && ILess_Color::isNamedColor($color->value)) {
$color = new ILess_Node_Color(ILess_Color::color($color->value));
}
if (!$color instanceof ILess_Node_Color) {
throw new InvalidArgumentException('Cannot darken the color. Invalid color given.');
}
$percentage = $percentage ? $percentage->value / 100 : 10;
$lightness = $this->clamp($color->getLightness(true) - $percentage);
return $this->hsla($color->getHue(true), $color->getSaturation(true), $lightness, $color->getAlpha(true));
}
/**
* Creates new color from the keyword
*
* @param string $keyword
* @return ILess_Color
*/
public static function fromKeyword($keyword)
{
$color = null;
// is this named color?
if (self::isNamedColor($keyword)) {
$color = new ILess_Color(substr(ILess_Color::color($keyword), 1));
$color->keyword = $keyword;
} elseif ($keyword === 'transparent') {
$color = new ILess_Color(array(255, 255, 255), 0);
$color->isTransparentKeyword = true;
}
return $color;
}
