/**
* @dataProvider blendTests
*/
public function testColorBlend(Color $foreground, Color $background, Color $expectedResult)
{
$blender = new AlphaCompositeBlender();
$result = $blender->blendColors($foreground, $background);
$this->assertEquals($expectedResult->red(), $result->red());
$this->assertEquals($expectedResult->green(), $result->green());
$this->assertEquals($expectedResult->blue(), $result->blue());
$diff = abs($expectedResult->alpha() - $result->alpha());
$this->assertLessThan(0.01, $diff);
}
public function formatColor(Color $color)
{
if ($color->alpha() < 1) {
return $this->formatColorFunction('rgba', array($color->red(), $color->green(), $color->blue(), round($color->alpha(), 2)));
} else {
return $this->formatColorFunction('rgb', array($color->red(), $color->green(), $color->blue()));
}
}
/**
* Converts BlendedColor objects to Color objects if needed.
*
* @param \OttawaDeveloper\Tools\ColorAnalyzer\Color $color
*
* @return \OttawaDeveloper\Tools\ColorAnalyzer\Color
*/
private function resolveColor(\OttawaDeveloper\Tools\ColorAnalyzer\Color $color)
{
if ($this->useOriginalColors && $color instanceof \OttawaDeveloper\Tools\ColorAnalyzer\BlendedColor) {
return $color->originalColor();
} else {
return $color;
}
}
public function formatColor(\OttawaDeveloper\Tools\ColorAnalyzer\Color $color)
{
$colorValues = array('red' => $color->red() / 255, 'green' => $color->green() / 255, 'blue' => $color->blue() / 255);
$minimumValue = min($colorValues);
$maximumValue = max($colorValues);
$luminescence = round(($minimumValue + $maximumValue) / 2, 2);
if ($minimumValue == $maximumValue) {
return $this->formatHslColor(0, 0, $luminescence, $color->alpha());
}
$colorRange = $maximumValue - $minimumValue;
$saturation = $colorRange;
if ($luminescence < 0.5) {
$saturation /= $maximumValue + $minimumValue;
} else {
$saturation /= 2 - $colorRange;
}
$hue = 0;
if ($colorValues['red'] >= $colorValues['blue'] && $colorValues['red'] >= $colorValues['green']) {
$hue = ($colorValues['green'] - $colorValues['blue']) / $colorRange;
} elseif ($colorValues['green'] >= $colorValues['blue'] && $colorValues['green'] >= $colorValues['red']) {
$hue = 2 + ($colorValues['blue'] - $colorValues['red']) / $colorRange;
} else {
$hue = 4 + ($colorValues['red'] - $colorValues['green']) / $colorRange;
}
return $this->formatHslColor($hue * 60, $saturation, $luminescence, $color->alpha());
}
public function formatColor(\OttawaDeveloper\Tools\ColorAnalyzer\Color $color)
{
$string = '#';
$string .= str_pad(dechex($color->red()), 2, '0', STR_PAD_LEFT);
$string .= str_pad(dechex($color->green()), 2, '0', STR_PAD_LEFT);
$string .= str_pad(dechex($color->blue()), 2, '0', STR_PAD_LEFT);
if ($color->alpha() < 1) {
$string .= str_pad(dechex((int) round($color->alpha() * 255)), 2, '0', STR_PAD_LEFT);
}
return strtoupper($string);
}
