/**
* 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);
}
/**
* Crop the input image so that it matches the aspect ratio specified in the
* rectangle_thumbs.aspect_ratio module setting. Focus on the center of the image and crop out
* the biggest piece that we can.
*
* @param string $input_file
* @param string $output_file
* @param array $options
*/
static function crop_to_aspect_ratio($input_file, $output_file, $options)
{
graphics::init_toolkit();
if (@filesize($input_file) == 0) {
throw new Exception("@todo EMPTY_INPUT_FILE");
}
list($desired_width, $desired_height) = explode(":", module::get_var("rectangle_thumbs", "aspect_ratio"));
$desired_ratio = $desired_width / $desired_height;
// Crop the largest rectangular section we can out of the original image. Start with a
// rectangular section that's guaranteed to be too large, then shrink it horizontally to just
// barely fit. If it's still too tall vertically, shrink both dimensions proportionally until
// the horizontal edge fits as well.
$dims = getimagesize($input_file);
if ($desired_ratio == 1) {
$new_width = $new_height = min($dims[0], $dims[1]);
} else {
if ($desired_ratio < 1) {
list($new_width, $new_height) = array($dims[0], $dims[0] / $desired_ratio);
} else {
list($new_width, $new_height) = array($dims[1] * $desired_ratio, $dims[1]);
}
}
if ($new_width > $dims[0]) {
// Too wide, scale it down
list($new_width, $new_height) = array($dims[0], $dims[0] / $desired_ratio);
}
if ($new_height > $dims[1]) {
// Too tall, scale it down some more
$new_width = min($dims[0], $dims[1] * $desired_ratio);
$new_height = $new_width / $desired_ratio;
}
$new_width = round($new_width);
$new_height = round($new_height);
Image::factory($input_file)->crop($new_width, $new_height)->quality(module::get_var("gallery", "image_quality"))->save($output_file);
}
/**
* Overlay an image on top of the input file.
*
* Valid options are: file, mime_type, position, transparency_percent, padding
*
* Valid positions: northwest, north, northeast,
* west, center, east,
* southwest, south, southeast
*
* padding is in pixels
*
* @param string $input_file
* @param string $output_file
* @param array $options
*/
static function composite($input_file, $output_file, $options)
{
try {
graphics::init_toolkit();
module::event("graphics_composite", $input_file, $output_file, $options);
list($width, $height) = getimagesize($input_file);
list($w_width, $w_height) = getimagesize($options["file"]);
$pad = isset($options["padding"]) ? $options["padding"] : 10;
$top = $pad;
$left = $pad;
$y_center = max($height / 2 - $w_height / 2, $pad);
$x_center = max($width / 2 - $w_width / 2, $pad);
$bottom = max($height - $w_height - $pad, $pad);
$right = max($width - $w_width - $pad, $pad);
switch ($options["position"]) {
case "northwest":
$x = $left;
$y = $top;
break;
case "north":
$x = $x_center;
$y = $top;
break;
case "northeast":
$x = $right;
$y = $top;
break;
case "west":
$x = $left;
$y = $y_center;
break;
case "center":
$x = $x_center;
$y = $y_center;
break;
case "east":
$x = $right;
$y = $y_center;
break;
case "southwest":
$x = $left;
$y = $bottom;
break;
case "south":
$x = $x_center;
$y = $bottom;
break;
case "southeast":
$x = $right;
$y = $bottom;
break;
}
Image::factory($input_file)->composite($options["file"], $x, $y, $options["transparency"])->quality(module::get_var("gallery", "image_quality"))->save($output_file);
module::event("graphics_composite_completed", $input_file, $output_file, $options);
} catch (ErrorException $e) {
Kohana::log("error", $e->get_message());
}
}
/**
* Crop the input image so that it's square. Focus on the center of the image.
*
* @param string $input_file
* @param string $output_file
* @param array $options
*/
static function crop_to_square($input_file, $output_file, $options)
{
graphics::init_toolkit();
if (@filesize($input_file) == 0) {
throw new Exception("@todo EMPTY_INPUT_FILE");
}
$size = module::get_var("gallery", "thumb_size");
$dims = getimagesize($input_file);
Image::factory($input_file)->crop(min($dims[0], $dims[1]), min($dims[0], $dims[1]))->quality(module::get_var("gallery", "image_quality"))->save($output_file);
}
/**
* Overlay an image on top of the input file.
*
* Valid options are: file, position, transparency, padding
*
* Valid positions: northwest, north, northeast,
* west, center, east,
* southwest, south, southeast
*
* padding is in pixels
*
* @param string $input_file
* @param string $output_file
* @param array $options
* @param Item_Model $item (optional)
*/
static function composite($input_file, $output_file, $options, $item = null)
{
try {
graphics::init_toolkit();
$temp_file = system::temp_filename("composite_", pathinfo($output_file, PATHINFO_EXTENSION));
module::event("graphics_composite", $input_file, $temp_file, $options, $item);
if (@filesize($temp_file) > 0) {
// A graphics_composite event made an image - move it to output_file and use it.
@rename($temp_file, $output_file);
} else {
// No events made an image - proceed with standard process.
list($width, $height) = photo::get_file_metadata($input_file);
list($w_width, $w_height) = photo::get_file_metadata($options["file"]);
$pad = isset($options["padding"]) ? $options["padding"] : 10;
$top = $pad;
$left = $pad;
$y_center = max($height / 2 - $w_height / 2, $pad);
$x_center = max($width / 2 - $w_width / 2, $pad);
$bottom = max($height - $w_height - $pad, $pad);
$right = max($width - $w_width - $pad, $pad);
switch ($options["position"]) {
case "northwest":
$x = $left;
$y = $top;
break;
case "north":
$x = $x_center;
$y = $top;
break;
case "northeast":
$x = $right;
$y = $top;
break;
case "west":
$x = $left;
$y = $y_center;
break;
case "center":
$x = $x_center;
$y = $y_center;
break;
case "east":
$x = $right;
$y = $y_center;
break;
case "southwest":
$x = $left;
$y = $bottom;
break;
case "south":
$x = $x_center;
$y = $bottom;
break;
case "southeast":
$x = $right;
$y = $bottom;
break;
}
Image::factory($input_file)->composite($options["file"], $x, $y, $options["transparency"])->quality(module::get_var("gallery", "image_quality"))->save($output_file);
}
module::event("graphics_composite_completed", $input_file, $output_file, $options, $item);
} catch (ErrorException $e) {
// Unlike rotate and resize, composite catches its exceptions here. This is because
// composite is typically called for watermarks. If during thumb/resize generation
// the watermark fails, we'd still like the image resized, just without its watermark.
// If the exception isn't caught here, graphics::generate will replace it with a
// placeholder.
Kohana_Log::add("error", $e->getMessage());
}
}
