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-rw-r--r--mod/lightpics/lib/resize.php522
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diff --git a/mod/lightpics/lib/resize.php b/mod/lightpics/lib/resize.php
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+<?php
+/**
+ * Elgg tidypics library of resizing functions
+ *
+ * @package TidypicsImageResize
+ */
+
+
+/**
+ * Create thumbnails using PHP GD Library
+ *
+ * @param ElggFile holds the image that was uploaded
+ * @param string folder to store thumbnail in
+ * @param string name of the thumbnail
+ * @return bool TRUE on success
+ */
+function tp_create_gd_thumbnails($file, $prefix, $filestorename) {
+ global $CONFIG;
+
+ $image_sizes = elgg_get_plugin_setting('image_sizes', 'lightpics');
+ if (!$image_sizes) {
+ // move this out of library
+ register_error(elgg_echo('tidypics:nosettings'));
+ forward(REFERER);
+ return FALSE;
+ }
+ $image_sizes = unserialize($image_sizes);
+
+ $thumb = new ElggFile();
+ $thumb->owner_guid = $file->owner_guid;
+ $thumb->container_guid = $file->container_guid;
+
+ // tiny thumbail
+ $thumb->setFilename($prefix."thumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_gd_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['tiny_image_width'],
+ $image_sizes['tiny_image_height'],
+ TRUE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->thumbnail = $prefix."thumb".$filestorename;
+
+ // album thumbnail
+ global $CONFIG;
+ $CONFIG->debug = 'WARNING';
+ $thumb->setFilename($prefix."smallthumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_gd_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['small_image_width'],
+ $image_sizes['small_image_height'],
+ TRUE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->smallthumb = $prefix."smallthumb".$filestorename;
+ unset($CONFIG->debug);
+
+ // main image
+ $thumb->setFilename($prefix."largethumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_gd_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['large_image_width'],
+ $image_sizes['large_image_height'],
+ FALSE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->largethumb = $prefix."largethumb".$filestorename;
+
+
+ unset($thumb);
+
+ return TRUE;
+}
+
+/**
+ * Writes resized version of an already uploaded image - original from Elgg filestore.php
+ * Saves it in the same format as uploaded
+ *
+ * @param string $input_name The name of the file on the disk
+ * @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 $square If set to TRUE, will take the smallest of maxwidth and maxheight and use it to set the dimensions on all size; the image will be cropped.
+ * @return bool TRUE on success or FALSE on failure
+ */
+function tp_gd_resize($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 of image
+ $width = $imgsizearray[0];
+ $height = $imgsizearray[1];
+
+ $params = tp_im_calc_resize_params($width, $height, $maxwidth, $maxheight, $square, $x1, $y1, $x2, $y2);
+ if (!$params) {
+ return FALSE;
+ }
+
+ $new_width = $params['new_width'];
+ $new_height = $params['new_height'];
+ $region_width = $params['region_width'];
+ $region_height = $params['region_height'];
+ $widthoffset = $params['width_offset'];
+ $heightoffset = $params['height_offset'];
+
+ $accepted_formats = array(
+ 'image/jpeg' => 'jpeg',
+ 'image/pjpeg' => 'jpeg',
+ 'image/png' => 'png',
+ 'image/x-png' => 'png',
+ 'image/gif' => 'gif'
+ );
+
+ // make sure the function is available
+ $function = "imagecreatefrom" . $accepted_formats[$imgsizearray['mime']];
+ if (!is_callable($function)) {
+ return FALSE;
+ }
+
+ // load old image
+ $oldimage = $function($input_name);
+ if (!$oldimage) {
+ return FALSE;
+ }
+
+ // allocate the new image
+ $newimage = imagecreatetruecolor($new_width, $new_height);
+ if (!$newimage) {
+ return FALSE;
+ }
+
+ $rtn_code = imagecopyresampled( $newimage,
+ $oldimage,
+ 0,
+ 0,
+ $widthoffset,
+ $heightoffset,
+ $new_width,
+ $new_height,
+ $region_width,
+ $region_height);
+ if (!$rtn_code) {
+ return $rtn_code;
+ }
+
+ switch ($imgsizearray['mime']) {
+ case 'image/jpeg':
+ case 'image/pjpeg':
+ $rtn_code = imagejpeg($newimage, $output_name, 85);
+ break;
+ case 'image/png':
+ case 'image/x-png':
+ $rtn_code = imagepng($newimage, $output_name);
+ break;
+ case 'image/gif':
+ $rtn_code = imagegif($newimage, $output_name);
+ break;
+ }
+
+ imagedestroy($newimage);
+ imagedestroy($oldimage);
+
+ return $rtn_code;
+}
+
+
+/**
+ * Create thumbnails using PHP imagick extension
+ *
+ * @param ElggFile holds the image that was uploaded
+ * @param string folder to store thumbnail in
+ * @param string name of the thumbnail
+ * @return bool TRUE on success
+ */
+function tp_create_imagick_thumbnails($file, $prefix, $filestorename) {
+ $image_sizes = elgg_get_plugin_setting('image_sizes', 'tidypics');
+ if (!$image_sizes) {
+ register_error(elgg_echo('tidypics:nosettings'));
+ return FALSE;
+ }
+ $image_sizes = unserialize($image_sizes);
+
+ $thumb = new ElggFile();
+ $thumb->owner_guid = $file->owner_guid;
+ $thumb->container_guid = $file->container_guid;
+
+ // tiny thumbnail
+ $thumb->setFilename($prefix."thumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_imagick_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['tiny_image_width'],
+ $image_sizes['tiny_image_height'],
+ TRUE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->thumbnail = $prefix."thumb".$filestorename;
+
+ // album thumbnail
+ $thumb->setFilename($prefix."smallthumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_imagick_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['small_image_width'],
+ $image_sizes['small_image_height'],
+ TRUE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->smallthumb = $prefix."smallthumb".$filestorename;
+
+ // main image
+ $thumb->setFilename($prefix."largethumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_imagick_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['large_image_width'],
+ $image_sizes['large_image_height'],
+ FALSE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->largethumb = $prefix."largethumb".$filestorename;
+
+ unset($thumb);
+
+ return TRUE;
+}
+
+
+/**
+ * Resize using PHP imagick extension
+ *
+ * Writes resized version of an already uploaded 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 $square If set to TRUE, will take the smallest of maxwidth and maxheight and use it to set the dimensions on all size; the image will be cropped.
+ * @return bool TRUE on success
+ */
+function tp_imagick_resize($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
+ $width = $imgsizearray[0];
+ $height = $imgsizearray[1];
+
+ $params = tp_im_calc_resize_params($width, $height, $maxwidth, $maxheight, $square, $x1, $y1, $x2, $y2);
+ if (!$params) {
+ return FALSE;
+ }
+
+ $new_width = $params['new_width'];
+ $new_height = $params['new_height'];
+ $region_width = $params['region_width'];
+ $region_height = $params['region_height'];
+ $widthoffset = $params['width_offset'];
+ $heightoffset = $params['height_offset'];
+
+ try {
+ $img = new Imagick($input_name);
+ } catch (ImagickException $e) {
+ return FALSE;
+ }
+
+ $img->cropImage($region_width, $region_height, $widthoffset, $heightoffset);
+
+ // use the default IM filter (windowing filter), I think 1 means default blurring or number of lobes
+ $img->resizeImage($new_width, $new_height, imagick::FILTER_LANCZOS, 1);
+ $img->setImagePage($new_width, $new_height, 0, 0);
+
+ if ($img->writeImage($output_name) != TRUE) {
+ $img->destroy();
+ return FALSE;
+ }
+
+ $img->destroy();
+
+ return TRUE;
+}
+
+/**
+ * Create thumbnails using ImageMagick executables
+ *
+ * @param ElggFile holds the image that was uploaded
+ * @param string folder to store thumbnail in
+ * @param string name of the thumbnail
+ * @return bool TRUE on success
+ */
+function tp_create_im_cmdline_thumbnails($file, $prefix, $filestorename) {
+ $image_sizes = elgg_get_plugin_setting('image_sizes', 'tidypics');
+ if (!$image_sizes) {
+ register_error(elgg_echo('tidypics:nosettings'));
+ return FALSE;
+ }
+ $image_sizes = unserialize($image_sizes);
+
+ $thumb = new ElggFile();
+ $thumb->owner_guid = $file->owner_guid;
+ $thumb->container_guid = $file->container_guid;
+
+ // tiny thumbnail
+ $thumb->setFilename($prefix."thumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_im_cmdline_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['tiny_image_width'],
+ $image_sizes['tiny_image_height'],
+ TRUE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->thumbnail = $prefix."thumb".$filestorename;
+
+
+ // album thumbnail
+ $thumb->setFilename($prefix."smallthumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_im_cmdline_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['small_image_width'],
+ $image_sizes['small_image_height'],
+ TRUE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->smallthumb = $prefix."smallthumb".$filestorename;
+
+ // main image
+ $thumb->setFilename($prefix."largethumb".$filestorename);
+ $thumbname = $thumb->getFilenameOnFilestore();
+ $rtn_code = tp_im_cmdline_resize( $file->getFilenameOnFilestore(),
+ $thumbname,
+ $image_sizes['large_image_width'],
+ $image_sizes['large_image_height'],
+ FALSE);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+ $file->largethumb = $prefix."largethumb".$filestorename;
+
+ unset($thumb);
+
+ 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 .= "/";
+ }
+
+ // 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;
+}
+
+/**
+ * Calculate the resizing/cropping parameters
+ *
+ * @param int $orig_width
+ * @param int $orig_height
+ * @param int $new_width
+ * @param int $new_height
+ * @param bool $square
+ * @param int $x1
+ * @param int $y1
+ * @param int $x2
+ * @param int $y2
+ * @return array|FALSE
+ */
+function tp_im_calc_resize_params($orig_width, $orig_height, $new_width, $new_height, $square = FALSE, $x1 = 0, $y1 = 0, $x2 = 0, $y2 = 0) {
+ // crop image first?
+ $crop = TRUE;
+ if ($x1 == 0 && $y1 == 0 && $x2 == 0 && $y2 == 0) {
+ $crop = FALSE;
+ }
+
+ // how large a section of the image has been selected
+ if ($crop) {
+ $region_width = $x2 - $x1;
+ $region_height = $y2 - $y1;
+ } else {
+ // everything selected if no crop parameters
+ $region_width = $orig_width;
+ $region_height = $orig_height;
+ }
+
+ // determine cropping offsets
+ if ($square) {
+ // asking for a square image back
+
+ // detect case where someone is passing crop parameters that are not for a square
+ if ($crop == TRUE && $region_width != $region_height) {
+ return FALSE;
+ }
+
+ // size of the new square image
+ $new_width = $new_height = min($new_width, $new_height);
+
+ // find largest square that fits within the selected region
+ $region_width = $region_height = min($region_width, $region_height);
+
+ // set offsets for crop
+ if ($crop) {
+ $widthoffset = $x1;
+ $heightoffset = $y1;
+ $orig_width = $x2 - $x1;
+ $orig_height = $orig_width;
+ } else {
+ // place square region in the center
+ $widthoffset = floor(($orig_width - $region_width) / 2);
+ $heightoffset = floor(($orig_height - $region_height) / 2);
+ }
+ } else {
+ // non-square new image
+
+ // maintain aspect ratio of original image/crop
+ if (($region_height / (float)$new_height) > ($region_width / (float)$new_width)) {
+ $new_width = floor($new_height * $region_width / (float)$region_height);
+ } else {
+ $new_height = floor($new_width * $region_height / (float)$region_width);
+ }
+
+ // by default, use entire image
+ $widthoffset = 0;
+ $heightoffset = 0;
+
+ if ($crop) {
+ $widthoffset = $x1;
+ $heightoffset = $y1;
+ }
+ }
+
+ $resize_params = array();
+ $resize_params['new_width'] = $new_width;
+ $resize_params['new_height'] = $new_height;
+ $resize_params['region_width'] = $region_width;
+ $resize_params['region_height'] = $region_height;
+ $resize_params['width_offset'] = $widthoffset;
+ $resize_params['height_offset'] = $heightoffset;
+
+ return $resize_params;
+} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-04 12:44:10 +0000