Avatar resize extension that is not abandoned?

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pkbarbiedoll
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Posts: 92
Joined: Sat Dec 01, 2007 12:10 am

Avatar resize extension that is not abandoned?

Post by pkbarbiedoll » Fri Sep 22, 2017 9:19 pm

I'd really liked to implement the partially completed "Avatar Resizer" extension but it has issues with logging people out and the developer ditched the project.

Is there anything else in the works even a commercial extension? I read the alternate method of resizing but it requires modifying a script that will likely be overwritten with the next phpBB update.

help?

pkbarbiedoll
Registered User
Posts: 92
Joined: Sat Dec 01, 2007 12:10 am

Re: Avatar resize extension that is not abandoned?

Post by pkbarbiedoll » Mon Sep 25, 2017 6:22 pm

Good news for anyone looking for a usable resize mod for 3.2 (the commonly referred to mod under 3.1 won't work in 3.2).

Dion Designs put this one together and it works just fine with 3.2.
https://forum.dion-designs.com//p14564/#p14564 reposting here in case that site ever goes down.


-------------------------------------
Server-side resize of uploaded avatars
Posted January 31st 2017, 11:16pm by Dion
I changed my mind. :) Here's how to make avatar resizing work in phpBB 3.2. Open includes/functions_posting.php and locate the create_thumbnail() function. Replace the entire function with the following:

Code: Select all

/**
* Create Thumbnail
*
* Modified by Dion Designs to support resizing avatars
*/
function create_thumbnail($source, $destination, $mimetype, $new_width = 0, $new_height = 0) {
	global $config;

	if ($new_width) {
		$destination = $source;
	}
	else {
		$min_filesize = (int) $config['img_min_thumb_filesize'];
		$img_filesize = (file_exists($source)) ? @filesize($source) : false;

		if (!$img_filesize || $img_filesize <= $min_filesize) {
			return false;
		}
	}

	$dimension = @getimagesize($source);

	if ($dimension === false) {
		return false;
	}
	list($width, $height, $type, ) = $dimension;

	if (empty($width) || empty($height)) {
		return false;
	}

	if (!$new_width) {
		list($new_width, $new_height) = get_img_size_format($width, $height);
	}
	else if ($height > $new_height || $width > $new_width) {
		$h_ratio = $new_height / $height;
		$w_ratio = $new_width / $width;
		$scale_factor = ($h_ratio < $w_ratio) ? $h_ratio : $w_ratio;
		$new_width = ($h_ratio < $w_ratio) ? round($width * $scale_factor) : $new_width;
		$new_height = ($w_ratio < $h_ratio) ? round($height * $scale_factor) : $new_height;
	}
	else {
		return false;
	}

	// Do not create a thumbnail if the resulting width/height is bigger than the original one
	if ($new_width >= $width && $new_height >= $height) {
		return false;
	}

	$used_imagick = false;

	// Only use imagemagick if defined and the passthru function not disabled
	if ($config['img_imagick'] && function_exists('passthru')) {
		if (substr($config['img_imagick'], -1) !== '/')	{
			$config['img_imagick'] .= '/';
		}

		@passthru(escapeshellcmd($config['img_imagick']) . 'convert' . ((defined('PHP_OS') && preg_match('#^win#i', PHP_OS)) ? '.exe' : '') . ' -quality 85 -geometry ' . $new_width . 'x' . $new_height . ' "' . str_replace('\\', '/', $source) . '" "' . str_replace('\\', '/', $destination) . '"');

		if (file_exists($destination)) {
			$used_imagick = true;
		}
	}

	if (!$used_imagick) {
		$type = get_supported_image_types($type);

		if ($type['gd']) {
			// If the type is not supported, we are not able to create a thumbnail
			if ($type['format'] === false) {
				return false;
			}

			switch ($type['format']) {
				case IMG_GIF:
					$image = @imagecreatefromgif($source);
				break;

				case IMG_JPG:
					@ini_set('gd.jpeg_ignore_warning', 1);
					$image = @imagecreatefromjpeg($source);
				break;

				case IMG_PNG:
					$image = @imagecreatefrompng($source);
				break;

				case IMG_WBMP:
					$image = @imagecreatefromwbmp($source);
				break;
			}

			if (empty($image)) {
				return false;
			}

			if ($type['version'] == 1) {
				$new_image = imagecreate($new_width, $new_height);

				if ($new_image === false) {
					return false;
				}

				imagecopyresized($new_image, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
			}
			else {
				$new_image = imagecreatetruecolor($new_width, $new_height);

				if ($new_image === false) {
					return false;
				}

				// Preserve alpha transparency (png for example)
				@imagealphablending($new_image, false);
				@imagesavealpha($new_image, true);

				imagecopyresampled($new_image, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
			}

			// If we are in safe mode create the destination file prior to using the gd functions to circumvent a PHP bug
			if (@ini_get('safe_mode') || @strtolower(ini_get('safe_mode')) == 'on') {
				@touch($destination);
			}

			switch ($type['format']) {
				case IMG_GIF:
					imagegif($new_image, $destination);
				break;

				case IMG_JPG:
					imagejpeg($new_image, $destination, 90);
				break;

				case IMG_PNG:
					imagepng($new_image, $destination);
				break;

				case IMG_WBMP:
					imagewbmp($new_image, $destination);
				break;
			}

			imagedestroy($new_image);
		}
		else {
			return false;
		}
	}

	if (!file_exists($destination)) {
		return false;
	}

	if (!$new_width) {
		global $phpbb_filesystem;

		try
		{
			$phpbb_filesystem->phpbb_chmod($destination, CHMOD_READ | CHMOD_WRITE);
		}
		catch (\phpbb\filesystem\exception\filesystem_exception $e)
		{
			// Do nothing
		}
	}
	return array($new_width, $new_height);
}

Save the file. Next, open the phpbb/avatar/driver/upload.php file and locate the following line:

Code: Select all

		$file->clean_filename('avatar', $prefix, $row['id']);
Replace this line with the following:

Code: Select all

//	MODIFICATION BY DION DESIGNS
		$upload->set_allowed_dimensions($this->config['avatar_min_width'], $this->config['avatar_min_height'], 65535, 65535);
//	END MODIFICATION

		$file->clean_filename('avatar', $prefix, $row['id']);

//	MODIFICATION BY DION DESIGNS
		// resize uploaded avatar
		include_once($this->phpbb_root_path . 'includes/functions_posting.' . $this->php_ext);
		@ini_set('memory_limit','128M');
		$result = create_thumbnail($file->get('filename'), '', '', $this->config['avatar_max_width'], $this->config['avatar_max_height']);
		$width = $file->get('width');
		$height= $file->get('height');
		if ($result) {
			list($width, $height) = $result;
		}
//	END MODIFICATION

Finally, a few lines below what you just replaced, you'll find the following block of code:

Code: Select all

		return array(
			'avatar' => $row['id'] . '_' . time() . '.' . $file->get('extension'),
			'avatar_width' => $file->get('width'),
			'avatar_height' => $file->get('height'),
		);

Change it to the following:

Code: Select all

Code: Select all

	return array(
			'avatar' => $row['id'] . '_' . time() . '.' . $file->get('extension'),
			'avatar_width' => $width,
			'avatar_height' => $height,
		);

Uploaded avatars should now be automatically resized. :)

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