/**
* Rotate an image. Valid options are degrees
*
* @param string $input_file
* @param string $output_file
* @param array $options
*/
static function rotate($input_file, $output_file, $options)
{
graphics::init_toolkit();
module::event("graphics_rotate", $input_file, $output_file, $options);
// BEGIN mod to original function
$image_info = getimagesize($input_file);
// [0]=w, [1]=h, [2]=type (1=GIF, 2=JPG, 3=PNG)
if (module::get_var("image_optimizer", "rotate_jpg") || $image_info[2] == 2) {
// rotate_jpg enabled, the file is a jpg. get args
$path = module::get_var("image_optimizer", "path_jpg");
$exec_args = " -rotate ";
$exec_args .= $options["degrees"] > 0 ? $options["degrees"] : $options["degrees"] + 360;
$exec_args .= " -copy all -optimize -outfile ";
// run it - from input_file to tmp_file
$tmp_file = image_optimizer::make_temp_name($output_file);
exec(escapeshellcmd($path) . $exec_args . escapeshellarg($tmp_file) . " " . escapeshellarg($input_file), $exec_output, $exec_status);
if ($exec_status || !filesize($tmp_file)) {
// either a blank/nonexistant file or an error - log an error and pass to normal function
Kohana_Log::add("error", "image_optimizer rotation failed on " . $output_file);
unlink($tmp_file);
} else {
// worked - move temp to output
rename($tmp_file, $output_file);
$status = true;
}
}
if (!$status) {
// we got here if we weren't supposed to use jpegtran or if jpegtran failed
// END mod to original function
Image::factory($input_file)->quality(module::get_var("gallery", "image_quality"))->rotate($options["degrees"])->save($output_file);
// BEGIN mod to original function
}
// END mod to original function
module::event("graphics_rotate_completed", $input_file, $output_file, $options);
}
/**
* the main optimize function
*
* the function arguments are the same format as other graphics rules. the only "option" is $target, hence why it's renamed in the function def.
*
* NOTE: unlike other graphics transformations, this only uses the output file! if it isn't already there, we don't do anything.
* among other things, this means that the original, full-size images are never touched.
*/
static function optimize($input_file, $output_file, $target, $item = null)
{
// see if output file exists and is writable
if (is_writable($output_file)) {
// see if input is a supported file type. if not, return without doing anything.
$image_info = getimagesize($input_file);
// [0]=w, [1]=h, [2]=type (1=GIF, 2=JPG, 3=PNG)
switch ($image_info[2]) {
case 1:
$type_old = "gif";
$convert = module::get_var("image_optimizer", "convert_" . $target . "_gif");
break;
case 2:
$type_old = "jpg";
$convert = 0;
// no conversion possible here...
break;
case 3:
$type_old = "png";
$convert = module::get_var("image_optimizer", "convert_" . $target . "_png");
break;
default:
// not a supported file type
return;
}
} else {
// file doesn't exist or isn't writable
return;
}
// set new file type
$type = $convert ? $convert : $type_old;
// convert image type (if applicable). this isn't necessarily lossless.
if ($convert) {
$output_file_new = legal_file::change_extension($output_file, $type);
// perform conversion using standard Gallery toolkit (GD/ImageMagick/GraphicsMagick)
// note: if input was a GIF, this will kill animation
$image = Image::factory($output_file)->quality(module::get_var("gallery", "image_quality"))->save($output_file_new);
// if filenames are different, move the new on top of the old
if ($output_file != $output_file_new) {
/**
* HACK ALERT! Gallery3 is still broken with regard to treating thumb/resizes with proper extensions. This doesn't try to fix that.
* Normal Gallery setup:
* photo thumb -> keep photo type, keep photo extension
* album thumb -> keep source photo thumb type, change extension to jpg (i.e. ".album.jpg" even for png/gif)
* Also, missing_photo.png is similarly altered...
*
* Anyway, to avoid many rewrites of core functions (and not-easily-reversible database changes), this module also forces the extension to stay the same.
* With image optimizer conversion:
* photo thumb -> change type, keep photo extension (i.e. "photo.png" photo becomes "photo.png" thumb even if type has changed)
* album thumb -> keep source photo thumb type, change extension to jpg (i.e. ".album.jpg" even for png/gif)
*/
rename($output_file_new, $output_file);
}
}
// get module variables
$configstatus = module::get_var("image_optimizer", "configstatus_" . $type);
$path = module::get_var("image_optimizer", "path_" . $type);
$opt = module::get_var("image_optimizer", "optlevel_" . $target . "_" . $type);
$meta = module::get_var("image_optimizer", "metastrip_" . $target);
$prog = module::get_var("image_optimizer", "progressive_" . $target);
// make sure the toolkit is configured correctly and we want to use it - if not, return without doing anything.
if ($configstatus) {
if (!$prog && !$meta && !$opt) {
// nothing to do!
return;
}
} else {
// not configured correctly
return;
}
/**
* do the actual optimization
*/
// set parameters
switch ($type) {
case "jpg":
$exec_args = $opt ? " -optimize" : "";
$exec_args .= $meta ? " -copy none" : " -copy all";
$exec_args .= $prog ? " -progressive" : "";
$exec_args .= " -outfile ";
break;
case "png":
$exec_args = $opt ? " -o" . $opt : "";
$exec_args .= $meta ? " -strip all" : "";
$exec_args .= $prog ? " -i 1" : "";
$exec_args .= " -quiet -out ";
break;
case "gif":
$exec_args = $opt ? " --optimize=3" : "";
// levels 1 and 2 don't really help us
$exec_args .= $meta ? " --no-comments --no-extensions --no-names" : " --same-comments --same-extensions --same-names";
$exec_args .= $prog ? " --interlace" : " --same-interlace";
$exec_args .= " --careful --output ";
break;
}
// run it - from output_file to tmp_file.
$tmp_file = image_optimizer::make_temp_name($output_file);
exec(escapeshellcmd($path) . $exec_args . escapeshellarg($tmp_file) . " " . escapeshellarg($output_file), $exec_output, $exec_status);
if ($exec_status || !filesize($tmp_file)) {
// either a blank/nonexistant file or an error - do nothing to the output, but log an error and delete the temp (if any)
Kohana_Log::add("error", "image_optimizer optimization failed on " . $output_file);
unlink($tmp_file);
} else {
// worked - move temp to output
rename($tmp_file, $output_file);
}
}