/**
* resize
*/
static function resize($file, $required_width, $required_height = false, $method = 'extent', $gravity = 'center', $fill = false)
{
//first check file exists and is readable
if (!is_readable(ONXSHOP_PROJECT_DIR . $file)) {
return false;
}
//prepare variables
if (is_numeric($required_height)) {
$directory = ONXSHOP_PROJECT_DIR . "var/thumbnails/{$required_width}x{$required_height}";
$thumb_file = "var/thumbnails/{$required_width}x{$required_height}/" . md5($file);
} else {
$directory = ONXSHOP_PROJECT_DIR . "var/thumbnails/{$required_width}";
$thumb_file = "var/thumbnails/{$required_width}/" . md5($file);
}
$file_rp = ONXSHOP_PROJECT_DIR . $file;
$image_resize_options = "_{$method}_{$gravity}_{$fill}";
// TODO check valid options
if ($image_resize_options == "___") {
$image_resize_options = "";
}
if ($image_resize_options) {
$thumb_file = $thumb_file . $image_resize_options;
}
$thumb_file_rp = ONXSHOP_PROJECT_DIR . $thumb_file;
//check if the destination directory exits
if (!is_readable($directory)) {
if (!mkdir($directory)) {
msg("common_image.resize(): Cannot create folder {$directory}", 'error');
}
}
//determinate real image size
$size = common_image::getImageSize($file_rp);
$width = $required_width;
$height = round($required_width / $size['proportion']);
msg("Thumbnail will have size {$width} x {$height}", 'ok', 3);
/**
* resize method option
*/
if (!in_array(strtolower($method), array('crop', 'extent'))) {
$method = 'extent';
}
/**
* gravity option
* NorthWest, North, NorthEast, West, Center, East, SouthWest, South, SouthEast
*/
if (!in_array(strtolower($gravity), array('northwest', 'north', 'northeast', 'west', 'center', 'east', 'southwest', 'south', 'southeast'))) {
$gravity = 'center';
}
/**
* fill option
*/
if ($fill == true) {
$fill = '^';
} else {
$fill = '';
}
/**
* if height is specified align in center and allow to fill the space
* see http://www.imagemagick.org/Usage/thumbnails/#cut
* http://www.imagemagick.org/Usage/resize/#shrink
*/
if (is_numeric($required_height)) {
$background = common_image::supportsTransparency($file_rp) ? 'none' : 'white';
$other_im_params = "-background {$background} -alpha background -gravity {$gravity} -{$method} {$width}x{$required_height}";
$height = $required_height;
} else {
$other_im_params = '';
}
/**
* return cached file or create with ImageMagick
*/
if (is_readable($thumb_file_rp)) {
return $thumb_file;
} else {
$image_configuration = common_image::initConfiguration();
$jpeg_quality = $image_configuration['jpeg_quality'];
$file_rp_escaped = escapeshellarg($file_rp);
$width = (int) $width;
$height = (int) $height;
$jpeg_quality = (int) $jpeg_quality;
$thumb_file_rp_escaped = escapeshellarg($thumb_file_rp);
//usage: resize $filename $width $height $target_filename $quality $other_options
///usr/bin/convert "$1" -colorspace RGB -depth 8 -quality $QUALITY -thumbnail $2x$3^ $6 "$4"
$colorspace = self::isOldImageMagickVersion() ? 'RGB' : 'sRGB';
$shell_command = "convert {$file_rp_escaped} -colorspace {$colorspace} -depth 8 -quality {$jpeg_quality} -thumbnail {$width}x{$height}{$fill} {$other_im_params} {$thumb_file_rp_escaped}";
$result = local_exec($shell_command);
if (is_readable($thumb_file_rp)) {
return $thumb_file;
} else {
return false;
}
}
}
