public function setColorspaceToRGB()
{
$imageColorspace = $this->resource->getImageColorspace();
if ($imageColorspace == \Imagick::COLORSPACE_CMYK) {
if (self::getCMYKColorProfile() && self::getRGBColorProfile()) {
$profiles = $this->resource->getImageProfiles('*', false);
// we're only interested if ICC profile(s) exist
$has_icc_profile = array_search('icc', $profiles) !== false;
// if it doesn't have a CMYK ICC profile, we add one
if ($has_icc_profile === false) {
$this->resource->profileImage('icc', self::getCMYKColorProfile());
}
// then we add an RGB profile
$this->resource->profileImage('icc', self::getRGBColorProfile());
$this->resource->setImageColorspace(\Imagick::COLORSPACE_SRGB);
// we have to use SRGB here, no clue why but it works
} else {
$this->resource->setImageColorspace(\Imagick::COLORSPACE_SRGB);
}
} elseif ($imageColorspace == \Imagick::COLORSPACE_GRAY) {
$this->resource->setImageColorspace(\Imagick::COLORSPACE_SRGB);
} elseif (!in_array($imageColorspace, [\Imagick::COLORSPACE_RGB, \Imagick::COLORSPACE_SRGB])) {
$this->resource->setImageColorspace(\Imagick::COLORSPACE_SRGB);
} else {
// this is to handle embedded icc profiles in the RGB/sRGB colorspace
$profiles = $this->resource->getImageProfiles('*', false);
$has_icc_profile = array_search('icc', $profiles) !== false;
if ($has_icc_profile) {
try {
// if getImageColorspace() says SRGB but the embedded icc profile is CMYK profileImage() will throw an exception
$this->resource->profileImage('icc', self::getRGBColorProfile());
} catch (\Exception $e) {
Logger::warn($e);
}
}
}
// this is a HACK to force grayscale images to be real RGB - truecolor, this is important if you want to use
// thumbnails in PDF's because they do not support "real" grayscale JPEGs or PNGs
// problem is described here: http://imagemagick.org/Usage/basics/#type
// and here: http://www.imagemagick.org/discourse-server/viewtopic.php?f=2&t=6888#p31891
$currentLocale = setlocale(LC_ALL, "0");
// this locale hack thing is also a hack for imagick
setlocale(LC_ALL, "en");
// Set locale to "en" for ImagickDraw::point() to ensure the involved tostring() methods keep the decimal point
$draw = new \ImagickDraw();
$draw->setFillColor("#ff0000");
$draw->setfillopacity(0.01);
$draw->point(floor($this->getWidth() / 2), floor($this->getHeight() / 2));
// place it in the middle of the image
$this->resource->drawImage($draw);
setlocale(LC_ALL, $currentLocale);
// see setlocale() above, for details ;-)
return $this;
}