/**
* Convert any color-representation into an array of 4 ints (RGBA).
*
* Userdefined color specifications get translated into
* an array of rgb values.
*
* @param mixed $color Any color representation supported by Image_Canvas_Color::color2RGB()
*
* @return array Array of 4 ints (RGBA-representation)
* @access public
* @static
*/
function color2RGB($color)
{
if (is_array($color)) {
if (!is_numeric($color[0])) {
return null;
// error
}
if (count($color) == 3) {
// assume RGB-color
// 255 = alpha-value; full opaque
return array((int) $color[0], (int) $color[1], (int) $color[2], 255);
}
if (count($color) == 4) {
// assume RGBA-color
// 255 = alpha-value; full opaque
return array((int) $color[0], (int) $color[1], (int) $color[2], (int) $color[3]);
}
return null;
// error
} elseif (is_string($color)) {
$alphaPos = strpos($color, '@');
if ($alphaPos === false) {
$alpha = 255;
} else {
$alphaFloat = (double) substr($color, $alphaPos + 1);
// restrict to range 0..1
$alphaFloat = max(min($alphaFloat, 1), 0);
$alpha = (int) round((double) 255 * $alphaFloat);
$color = substr($color, 0, $alphaPos);
}
if ($color[0] == '#') {
// hex-color given, e.g. #FFB4B4
$tempColor = parent::hex2rgb($color);
return array((int) $tempColor[0], (int) $tempColor[1], (int) $tempColor[2], $alpha);
}
if (strpos($color, '%') !== false) {
$tempColor = parent::percentageColor2RGB($color);
return array((int) $tempColor[0], (int) $tempColor[1], (int) $tempColor[2], $alpha);
} else {
$tempColor = parent::namedColor2RGB($color);
return array((int) $tempColor[0], (int) $tempColor[1], (int) $tempColor[2], $alpha);
}
} else {
return null;
// error
}
}
function testPercentageColor2RGB_2digits()
{
$result = Image_Color::percentageColor2RGB("10%,50%,90%");
$this->assertEquals(array(26, 127, 229), $result);
}
