diff options
Diffstat (limited to 'lib/watermark.php')
| -rw-r--r-- | lib/watermark.php | 146 |
1 files changed, 94 insertions, 52 deletions
diff --git a/lib/watermark.php b/lib/watermark.php index c7b8503c5..6b16f0e4a 100644 --- a/lib/watermark.php +++ b/lib/watermark.php @@ -1,132 +1,175 @@ <?php - +/** + * Watermarking functions + * + * @package TidypicsWatermark + */ + +/** + * Make replacements in watermark text + * + * @param string $text + * @param ElggUser $owner + * @return string + */ function tp_process_watermark_text($text, $owner) { global $CONFIG; $text = str_replace("%name%", $owner->name, $text); $text = str_replace("%sitename%", $CONFIG->sitename, $text); - + return $text; } +/** + * Create the watermark image filename + * + * @param string $text + * @param ElggUser $owner + * @return string + */ function tp_get_watermark_filename($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; } +/** + * Use GD to apply watermark to image + * + * @param resource $image GD image resource + */ function tp_gd_watermark($image) { + global $CONFIG; + $watermark_text = get_plugin_setting('watermark_text', 'tidypics'); - if (!$watermark_text) + if (!$watermark_text) { return; - + } + // plugins can do their own watermark and return false to prevent this function from running - if (trigger_plugin_hook('tp_watermark', 'gd', $image, true) === false) + if (trigger_plugin_hook('tp_watermark', 'gd', $image, true) === false) { return; - - global $CONFIG; - + } + $owner = get_loggedin_user(); $watermark_text = tp_process_watermark_text($watermark_text, $owner); - + // transparent gray imagealphablending($image, true); $textcolor = imagecolorallocatealpha($image, 50, 50, 50, 60); - + // font and location - $font = $CONFIG->pluginspath . "tidypics/fonts/LiberationSerif-Regular.ttf"; + $font = $CONFIG->pluginspath . "tidypics/fonts/LiberationSerif-Regular.ttf"; $bbox = imagettfbbox(20, 0, $font, $watermark_text); - + $text_width = $bbox[2] - $bbox[0]; $text_height = $bbox[1] - $bbox[7]; - + $image_width = imagesx($image); $image_height = imagesy($image); - + $left = $image_width / 2 - $text_width / 2; $top = $image_height - 20; - + // write the text on the image imagettftext($image, 20, 0, $left, $top, $textcolor, $font, $watermark_text); } +/** + * imagick watermarking + * + * @param string $filename + * @return bool + */ function tp_imagick_watermark($filename) { $watermark_text = get_plugin_setting('watermark_text', 'tidypics'); - if (!$watermark_text) - return; - + if (!$watermark_text) { + return false; + } + // plugins can do their own watermark and return false to prevent this function from running - if (trigger_plugin_hook('tp_watermark', 'imagick', $filename, true) === false) - return; - + if (trigger_plugin_hook('tp_watermark', 'imagick', $filename, true) === false) { + return true; + } + $owner = get_loggedin_user(); $watermark_text = tp_process_watermark_text($watermark_text, $owner); - - $img = new Imagick($filename); - $img->readImage($image); + $img = new Imagick($filename); + + $img->readImage($image); - $draw = new ImagickDraw(); + $draw = new ImagickDraw(); - //$draw->setFont(""); + //$draw->setFont(""); - $draw->setFontSize(28); + $draw->setFontSize(28); - $draw->setFillOpacity(0.5); + $draw->setFillOpacity(0.5); - $draw->setGravity(Imagick::GRAVITY_SOUTH); + $draw->setGravity(Imagick::GRAVITY_SOUTH); + + $img->annotateImage($draw, 0, 0, 0, $watermark_text); - $img->annotateImage($draw, 0, 0, 0, $watermark_text); - if ($img->writeImage($filename) != true) { $img->destroy(); return false; } - + $img->destroy(); - + return true; } +/** + * ImageMagick watermarking + * + * @param string $filename + */ function tp_im_cmdline_watermark($filename) { - + $watermark_text = get_plugin_setting('watermark_text', 'tidypics'); - if (!$watermark_text) + if (!$watermark_text) { return; - + } + // plugins can do their own watermark and return false to prevent this function from running - if (trigger_plugin_hook('tp_watermark', 'imagemagick', $filename, true) === false) + if (trigger_plugin_hook('tp_watermark', 'imagemagick', $filename, true) === false) { 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) != "/") $im_path .= "/"; + if (substr($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 + + + if ( !file_exists( $user_stamp_base . $ext )) { + //create the watermark image 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' . $ext; @@ -134,12 +177,12 @@ function tp_im_cmdline_watermark($filename) { $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 . '" "' . $filename . '_watermarked"'; @@ -148,4 +191,3 @@ function tp_im_cmdline_watermark($filename) { exec( $command ); } } -?>
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