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<?php
function tp_process_watermark_text($text, $owner) {
global $CONFIG;
$text = str_replace("%username%", $owner->username, $text);
$text = str_replace("%sitename%", $CONFIG->sitename, $text);
return $text;
}
function tp_get_watermark_filename($text, $owner) {
global $CONFIG;
$base = strtolower($text);
$base = preg_replace("/[^\w-]+/", "-", $base);
$base = trim($base, '-');
$filename = tp_get_img_dir();
$filename .= strtolower($owner->username . "_" . $base . "_stamp");
return $filename;
}
function tp_gd_watermark($filename) {
}
function tp_imagick_watermark($filename) {
}
function tp_imagick_cmdline_watermark($filename) {
$watermark_text = get_plugin_setting('watermark_text', 'tidypics');
if (!$watermark_text)
return;
$im_path = get_plugin_setting('im_path', 'tidypics');
if (!$im_path) {
$im_path = "/usr/bin/";
}
// make sure end of path is /
if (substr($im_path, strlen($im_path)-1, 1) != "/") $im_path .= "/";
$owner = get_loggedin_user();
$watermark_text = tp_process_watermark_text($watermark_text, $owner);
$ext = ".png";
$user_stamp_base = tp_get_watermark_filename($watermark_text, $owner);
if ( !file_exists( $user_stamp_base . $ext )) { //create the watermark if it doesn't exist
$commands = array();
$commands[] = $im_path . 'convert -size 300x50 xc:grey30 -pointsize 20 -gravity center -draw "fill grey70 text 0,0 \''. $watermark_text . '\'" "'. $user_stamp_base . '_fgnd' . $ext . '"';
$commands[] = $im_path . 'convert -size 300x50 xc:black -pointsize 20 -gravity center -draw "fill white text 1,1 \''. $watermark_text . '\' text 0,0 \''. $watermark_text . '\' fill black text -1,-1 \''. $watermark_text . '\'" +matte ' . $user_stamp_base . '_mask' . $ext;
$commands[] = $im_path . 'composite -compose CopyOpacity "' . $user_stamp_base . "_mask" . $ext . '" "' . $user_stamp_base . '_fgnd' . $ext . '" "' . $user_stamp_base . $ext . '"';
$commands[] = $im_path . 'mogrify -trim +repage "' . $user_stamp_base . $ext . '"';
$commands[] = 'rm "' . $user_stamp_base . '_mask' . $ext . '"';
$commands[] = 'rm "' . $user_stamp_base . '_fgnd' . $ext . '"';
foreach( $commands as $command ) {
exec( $command );
}
}
//apply the watermark
$commands = array();
$commands[] = $im_path . 'composite -gravity south -geometry +0+10 "' . $user_stamp_base . $ext . '" "' . $filename . '" "' . $filename . '_watermarked"';
$commands[] = "mv \"$filename" . "_watermarked\" \"$filename\"";
foreach( $commands as $command ) {
exec( $command );
}
}
?>
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