/**
* Gets the jpeg contents of the resized version of an already uploaded image
* (Returns FALSE if the uploaded file was not an image)
*
* @param string $input_name The name of the file input field on the submission form
* @param string $output_name The name of the file to be written
* @param int $maxwidth The maximum width of the resized image
* @param int $maxheight The maximum height of the resized image
* @param TRUE|FALSE $square If set to TRUE, will take the smallest of maxwidth and maxheight and use it to set the dimensions on all size; the image will be cropped.
* @return bool
*/
function tp_im_cmdline_resize($input_name, $output_name, $maxwidth, $maxheight, $square = FALSE, $x1 = 0, $y1 = 0, $x2 = 0, $y2 = 0)
{
// Get the size information from the image
$imgsizearray = getimagesize($input_name);
if (!$imgsizearray) {
return FALSE;
}
// Get width and height
$orig_width = $imgsizearray[0];
$orig_height = $imgsizearray[1];
$params = tp_im_calc_resize_params($orig_width, $orig_height, $maxwidth, $maxheight, $square, $x1, $y1, $x2, $y2);
if (!$params) {
return FALSE;
}
$newwidth = $params['new_width'];
$newheight = $params['new_height'];
$accepted_formats = array('image/jpeg' => 'jpeg', 'image/pjpeg' => 'jpeg', 'image/png' => 'png', 'image/x-png' => 'png', 'image/gif' => 'gif');
// If it's a file we can manipulate ...
if (!array_key_exists($imgsizearray['mime'], $accepted_formats)) {
return FALSE;
}
$im_path = elgg_get_plugin_setting('im_path', 'tidypics');
if (!$im_path) {
$im_path = "/usr/bin/";
}
if (substr($im_path, strlen($im_path) - 1, 1) != "/") {
$im_path .= "/";
}
// see imagemagick web site for explanation of these parameters
// the ^ in the resize means those are minimum width and height values
$command = $im_path . "convert \"{$input_name}\" -resize " . $newwidth . "x" . $newheight . "^ -gravity center -extent " . $newwidth . "x" . $newheight . " \"{$output_name}\"";
$output = array();
$ret = 0;
exec($command, $output, $ret);
if ($ret == 127) {
trigger_error('Tidypics warning: Image Magick convert is not found', E_USER_WARNING);
return FALSE;
} else {
if ($ret > 0) {
trigger_error('Tidypics warning: Image Magick convert failed', E_USER_WARNING);
return FALSE;
}
}
return TRUE;
}
/**
* Gets the jpeg contents of the resized version of an already uploaded image
* (Returns FALSE if the uploaded file was not an image)
*
* @param string $input_name The name of the file input field on the submission form
* @param string $output_name The name of the file to be written
* @param int $maxwidth The maximum width of the resized image
* @param int $maxheight The maximum height of the resized image
* @param TRUE|FALSE $square If set to TRUE, will take the smallest of maxwidth and maxheight and use it to set the dimensions on all size; the image will be cropped.
* @return bool
*/
function tp_im_cmdline_resize($input_name, $output_name, $maxwidth, $maxheight, $square = false, $x1 = 0, $y1 = 0, $x2 = 0, $y2 = 0)
{
// Get the size information from the image
$imgsizearray = getimagesize($input_name);
if (!$imgsizearray) {
return false;
}
// Get width and height
$orig_width = $imgsizearray[0];
$orig_height = $imgsizearray[1];
$params = tp_im_calc_resize_params($orig_width, $orig_height, $maxwidth, $maxheight, $square, $x1, $y1, $x2, $y2);
if (!$params) {
return false;
}
$newwidth = $params['new_width'];
$newheight = $params['new_height'];
$accepted_formats = array('image/jpeg' => 'jpeg', 'image/pjpeg' => 'jpeg', 'image/png' => 'png', 'image/x-png' => 'png', 'image/gif' => 'gif');
// If it's a file we can manipulate ...
if (!array_key_exists($imgsizearray['mime'], $accepted_formats)) {
return false;
}
$im_path = elgg_get_plugin_setting('im_path', 'tidypics');
if (!$im_path) {
$im_path = "/usr/bin/";
}
if (substr($im_path, strlen($im_path) - 1, 1) != "/") {
$im_path .= "/";
}
$gif_to_convert = $imgsizearray['mime'] == 'image/gif' ? '-coalesce' : '';
// see imagemagick web site for explanation of these parameters
// the ^ in the resize means those are minimum width and height values
$thumbnail_optimized = elgg_get_plugin_setting('thumbnail_optimization', 'tidypics');
switch ($thumbnail_optimized) {
case "complex":
$command = $im_path . "convert \"{$input_name}\" " . $gif_to_convert . " -filter Triangle -define filter:support=2 -thumbnail " . $newwidth . "x" . $newheight . "^ -gravity center -extent " . $newwidth . "x" . $newheight . " -unsharp 0.25x0.25+8+0.065 -dither None -posterize 136 -quality 82 -define jpeg:fancy-upsampling=off -define png:compression-filter=5 -define png:compression-level=9 -define png:compression-strategy=1 -define png:exclude-chunk=all -interlace none -colorspace sRGB -strip \"{$output_name}\"";
break;
case "simple":
$command = $im_path . "convert \"{$input_name}\" " . $gif_to_convert . " -quality 87 -filter Lanczos -thumbnail " . $newwidth . "x" . $newheight . "^ -gravity center -extent " . $newwidth . "x" . $newheight . " \"{$output_name}\"";
break;
default:
$command = $im_path . "convert \"{$input_name}\" " . $gif_to_convert . " -resize " . $newwidth . "x" . $newheight . "^ -gravity center -extent " . $newwidth . "x" . $newheight . " \"{$output_name}\"";
}
$output = array();
$ret = 0;
exec($command, $output, $ret);
if ($ret == 127) {
trigger_error('Tidypics warning: Image Magick convert is not found', E_USER_WARNING);
return false;
} else {
if ($ret > 0) {
trigger_error('Tidypics warning: Image Magick convert failed', E_USER_WARNING);
return false;
}
}
return true;
}
