/**
* Get save options.
*
* @param int|null $quality
* @param string $extension
* @return array
*/
private function _getSaveOptions($quality = null, $extension = null)
{
// Because it's possible for someone to set the quality to 0.
$quality = ($quality === null || $quality === false ? $this->_quality : $quality);
$extension = (!$extension ? $this->getExtension() : $extension);
switch ($extension)
{
case 'jpeg':
case 'jpg':
{
return array('jpeg_quality' => $quality, 'flatten' => true);
}
case 'gif':
{
$options = array('animated' => $this->_isAnimatedGif);
if ($this->_isAnimatedGif)
{
// Imagine library does not provide this value and arbitrarily divides it by 10, when assigning,
// so we have to improvise a little
$options['animated.delay'] = $this->_image->getImagick()->getImageDelay() * 10;
}
return $options;
}
case 'png':
{
// Valid PNG quality settings are 0-9, so normalize and flip, because we're talking about compression
// levels, not quality, like jpg and gif.
$normalizedQuality = round(($quality * 9) / 100);
$normalizedQuality = 9 - $normalizedQuality;
if ($normalizedQuality < 0)
{
$normalizedQuality = 0;
}
if ($normalizedQuality > 9)
{
$normalizedQuality = 9;
}
$options = array('png_compression_level' => $normalizedQuality, 'flatten' => false);
$pngInfo = ImageHelper::getPngImageInfo($this->_imageSourcePath);
// Even though a 2 channel PNG is valid (Grayscale with alpha channel), Imagick doesn't recognize it as
// a valid format: http://www.imagemagick.org/script/formats.php
// So 2 channel PNGs get converted to 4 channel.
if (is_array($pngInfo) && isset($pngInfo['channels']) && $pngInfo['channels'] !== 2)
{
$format = 'png'.(8 * $pngInfo['channels']);
}
else
{
$format = 'png32';
}
$options['png_format'] = $format;
return $options;
}
default:
{
return array();
}
}
}
/**
* Get save options.
*
* @param int|null $quality
* @param string $extension
* @return array
*/
private function _getSaveOptions($quality = null, $extension = null)
{
// Because it's possible for someone to set the quality to 0.
$quality = $quality === null || $quality === false ? $this->_quality : $quality;
$extension = !$extension ? $this->getExtension() : $extension;
switch ($extension) {
case 'jpeg':
case 'jpg':
return array('jpeg_quality' => $quality, 'flatten' => true);
case 'gif':
$options = array('animated' => $this->_isAnimatedGif);
return $options;
case 'png':
// Valid PNG quality settings are 0-9, so normalize and flip, because we're talking about compression
// levels, not quality, like jpg and gif.
$normalizedQuality = round($quality * 9 / 100);
$normalizedQuality = 9 - $normalizedQuality;
if ($normalizedQuality < 0) {
$normalizedQuality = 0;
}
if ($normalizedQuality > 9) {
$normalizedQuality = 9;
}
$options = array('png_compression_level' => $normalizedQuality, 'flatten' => false);
$pngInfo = ImageHelper::getPngImageInfo($this->_imageSourcePath);
// Even though a 2 channel PNG is valid (Grayscale with alpha channel), Imagick doesn't recognize it as
// a valid format: http://www.imagemagick.org/script/formats.php
// So 2 channel PNGs get converted to 4 channel.
if (is_array($pngInfo) && isset($pngInfo['channels']) && $pngInfo['channels'] !== 2) {
$format = 'png' . 8 * $pngInfo['channels'];
} else {
$format = 'png32';
}
$options['png_format'] = $format;
return $options;
default:
return array();
}
}
