131 lines
3.1 KiB
PHP
Executable File
131 lines
3.1 KiB
PHP
Executable File
<?php
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/*
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* Plugin Name: Thumbnails
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* Version: 1.0
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* Plugin URI: https://www.flatpress.org
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* Author: FlatPress
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* Author URI: https://www.flatpress.org
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* Description: Creates thumbnails for scaled images. Part of the standard distribution.
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*/
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define('THUMB_DIR', '.thumbs');
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if (!function_exists('imagegd2')) {
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define('PLUGIN_THUMB_ENABLED', false);
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} else {
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define('PLUGIN_THUMB_ENABLED', true);
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}
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function plugin_thumb_setup() {
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return PLUGIN_THUMB_ENABLED ? 1 : -1;
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}
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/**
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*
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* plugin_thumb_create
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*
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* creates a thumbnail and caches the thumbnail in IMAGES_DIR/.thumb
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*
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* @param string $fpath
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* string with filepath
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* @param array $infos
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* infos from getimagesize($fpath) function
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* @param int $new_width
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* @param int $new_height
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*
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* @return array array(string $thumbpath, int $thumbwidth, int $thumbheight)
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*
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*/
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function plugin_thumb_create($fpath, $infos, $new_width, $new_height) {
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if (!defined('PLUGIN_THUMB_ENABLED')) {
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return array();
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}
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if (!file_exists($fpath)) {
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return array();
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}
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if (!($new_width && $new_height)) {
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trigger_error("Size can't be 0 but got width=$new_width height=$new_height\n", E_USER_WARNING);
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return;
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}
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$thumbname = basename($fpath);
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$thumbdir = dirname($fpath) . '/' . THUMB_DIR;
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$thumbpath = $thumbdir . '/' . $thumbname;
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if (file_exists($thumbpath)) {
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$oldthumbinfo = getimagesize($thumbpath);
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if ($new_width == $oldthumbinfo [0]) {
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// already scaled
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return array(
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$thumbpath,
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$new_width,
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$new_height
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);
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}
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}
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@fs_mkdir($thumbdir);
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// we support only jpeg's, png's and gif's
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switch ($infos [2]) {
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case 1:
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$image = imagecreatefromgif($fpath);
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break;
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case 2:
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$image = imagecreatefromjpeg($fpath);
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break;
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case 3:
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$image = imagecreatefrompng($fpath);
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}
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// $image = imagecreatefromgd2 ($fpath);
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// create empty scaled and copy(resized) the picture
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$scaled = imagecreatetruecolor($new_width, $new_height);
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/*
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* If gif or png preserve the alpha channel
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*
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* Added by Piero VDFN
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* Kudos to http://www.php.net/manual/en/function.imagecopyresampled.php#104028
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*/
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if ($infos [2] == 1 || $infos [2] == 3) {
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imagecolortransparent($scaled, imagecolorallocatealpha($scaled, 0, 0, 0, 127));
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imagealphablending($scaled, false);
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imagesavealpha($scaled, true);
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$output = $infos [2] == 3 ? 'png' : 'gif';
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} else {
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$output = 'jpg';
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}
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imagecopyresampled($scaled, $image, 0, 0, 0, 0, $new_width, $new_height, $infos [0], $infos [1]);
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if ($output == 'png') {
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imagepng($scaled, $thumbpath);
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} elseif ($output == 'gif') {
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imagegif($scaled, $thumbpath);
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} else {
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imagejpeg($scaled, $thumbpath);
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}
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@chmod($thumbpath, FILE_PERMISSIONS);
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return array(
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$thumbpath,
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$new_width,
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$new_height
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);
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}
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function plugin_thumb_bbcodehook($actualpath, $props, $newsize) {
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list ($width, $height) = $newsize;
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if ($thumb = plugin_thumb_create($actualpath, $props, $width, $height))
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$thumb = BBCODE_USE_WRAPPER ? ("getfile.php?f=" . basename($actualpath) . '&thumb=true') : $thumb [0];
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return $thumb;
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}
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add_filter('bbcode_img_scale', 'plugin_thumb_bbcodehook', 0, 3);
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