diff options
author | Roeland Jago Douma <rullzer@owncloud.com> | 2016-04-30 10:45:19 +0200 |
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committer | Roeland Jago Douma <rullzer@owncloud.com> | 2016-04-30 11:32:22 +0200 |
commit | 368be8894cebd8e730f2ef7994d0b56bdc0f47e2 (patch) | |
tree | e4153727428d58cdbf82173cc3132bc30dd7e4e2 /lib/private/image.php | |
parent | 023c8b0eacc243b2dd4763e6086fc87ce8b76126 (diff) | |
download | nextcloud-server-368be8894cebd8e730f2ef7994d0b56bdc0f47e2.tar.gz nextcloud-server-368be8894cebd8e730f2ef7994d0b56bdc0f47e2.zip |
Move non PSR-4 files from lib/private root to legacy
As discussed we move all old style classes (OC_FOO_BAR) to legacy.
Then from there we can evaluate the need to convert them back or if they
can be fully deprecated/deleted.
Diffstat (limited to 'lib/private/image.php')
-rw-r--r-- | lib/private/image.php | 1147 |
1 files changed, 0 insertions, 1147 deletions
diff --git a/lib/private/image.php b/lib/private/image.php deleted file mode 100644 index a97347df623..00000000000 --- a/lib/private/image.php +++ /dev/null @@ -1,1147 +0,0 @@ -<?php -/** - * @author Andreas Fischer <bantu@owncloud.com> - * @author Bart Visscher <bartv@thisnet.nl> - * @author Bartek Przybylski <bart.p.pl@gmail.com> - * @author Björn Schießle <schiessle@owncloud.com> - * @author Byron Marohn <combustible@live.com> - * @author Christopher Schäpers <kondou@ts.unde.re> - * @author Georg Ehrke <georg@owncloud.com> - * @author j-ed <juergen@eisfair.org> - * @author Joas Schilling <nickvergessen@owncloud.com> - * @author Johannes Willnecker <johannes@willnecker.com> - * @author Jörn Friedrich Dreyer <jfd@butonic.de> - * @author Lukas Reschke <lukas@owncloud.com> - * @author Morris Jobke <hey@morrisjobke.de> - * @author Olivier Paroz <github@oparoz.com> - * @author Robin Appelman <icewind@owncloud.com> - * @author Thomas Müller <thomas.mueller@tmit.eu> - * @author Thomas Tanghus <thomas@tanghus.net> - * - * @copyright Copyright (c) 2016, ownCloud, Inc. - * @license AGPL-3.0 - * - * This code is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License, version 3, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License, version 3, - * along with this program. If not, see <http://www.gnu.org/licenses/> - * - */ - -/** - * Class for basic image manipulation - */ -class OC_Image implements \OCP\IImage { - /** @var false|resource */ - protected $resource = false; // tmp resource. - /** @var int */ - protected $imageType = IMAGETYPE_PNG; // Default to png if file type isn't evident. - /** @var string */ - protected $mimeType = 'image/png'; // Default to png - /** @var int */ - protected $bitDepth = 24; - /** @var null|string */ - protected $filePath = null; - /** @var finfo */ - private $fileInfo; - /** @var \OCP\ILogger */ - private $logger; - - /** - * Get mime type for an image file. - * - * @param string|null $filePath The path to a local image file. - * @return string The mime type if the it could be determined, otherwise an empty string. - */ - static public function getMimeTypeForFile($filePath) { - // exif_imagetype throws "read error!" if file is less than 12 byte - if ($filePath !== null && filesize($filePath) > 11) { - $imageType = exif_imagetype($filePath); - } else { - $imageType = false; - } - return $imageType ? image_type_to_mime_type($imageType) : ''; - } - - /** - * Constructor. - * - * @param resource|string $imageRef The path to a local file, a base64 encoded string or a resource created by - * an imagecreate* function. - * @param \OCP\ILogger $logger - */ - public function __construct($imageRef = null, $logger = null) { - $this->logger = $logger; - if (is_null($logger)) { - $this->logger = \OC::$server->getLogger(); - } - - if (!extension_loaded('gd') || !function_exists('gd_info')) { - $this->logger->error(__METHOD__ . '(): GD module not installed', array('app' => 'core')); - return false; - } - - if (\OC_Util::fileInfoLoaded()) { - $this->fileInfo = new finfo(FILEINFO_MIME_TYPE); - } - - if (!is_null($imageRef)) { - $this->load($imageRef); - } - } - - /** - * Determine whether the object contains an image resource. - * - * @return bool - */ - public function valid() { // apparently you can't name a method 'empty'... - return is_resource($this->resource); - } - - /** - * Returns the MIME type of the image or an empty string if no image is loaded. - * - * @return string - */ - public function mimeType() { - return $this->valid() ? $this->mimeType : ''; - } - - /** - * Returns the width of the image or -1 if no image is loaded. - * - * @return int - */ - public function width() { - return $this->valid() ? imagesx($this->resource) : -1; - } - - /** - * Returns the height of the image or -1 if no image is loaded. - * - * @return int - */ - public function height() { - return $this->valid() ? imagesy($this->resource) : -1; - } - - /** - * Returns the width when the image orientation is top-left. - * - * @return int - */ - public function widthTopLeft() { - $o = $this->getOrientation(); - $this->logger->debug('OC_Image->widthTopLeft() Orientation: ' . $o, array('app' => 'core')); - switch ($o) { - case -1: - case 1: - case 2: // Not tested - case 3: - case 4: // Not tested - return $this->width(); - case 5: // Not tested - case 6: - case 7: // Not tested - case 8: - return $this->height(); - } - return $this->width(); - } - - /** - * Returns the height when the image orientation is top-left. - * - * @return int - */ - public function heightTopLeft() { - $o = $this->getOrientation(); - $this->logger->debug('OC_Image->heightTopLeft() Orientation: ' . $o, array('app' => 'core')); - switch ($o) { - case -1: - case 1: - case 2: // Not tested - case 3: - case 4: // Not tested - return $this->height(); - case 5: // Not tested - case 6: - case 7: // Not tested - case 8: - return $this->width(); - } - return $this->height(); - } - - /** - * Outputs the image. - * - * @param string $mimeType - * @return bool - */ - public function show($mimeType = null) { - if ($mimeType === null) { - $mimeType = $this->mimeType(); - } - header('Content-Type: ' . $mimeType); - return $this->_output(null, $mimeType); - } - - /** - * Saves the image. - * - * @param string $filePath - * @param string $mimeType - * @return bool - */ - - public function save($filePath = null, $mimeType = null) { - if ($mimeType === null) { - $mimeType = $this->mimeType(); - } - if ($filePath === null && $this->filePath === null) { - $this->logger->error(__METHOD__ . '(): called with no path.', array('app' => 'core')); - return false; - } elseif ($filePath === null && $this->filePath !== null) { - $filePath = $this->filePath; - } - return $this->_output($filePath, $mimeType); - } - - /** - * Outputs/saves the image. - * - * @param string $filePath - * @param string $mimeType - * @return bool - * @throws Exception - */ - private function _output($filePath = null, $mimeType = null) { - if ($filePath) { - if (!file_exists(dirname($filePath))) - mkdir(dirname($filePath), 0777, true); - if (!is_writable(dirname($filePath))) { - $this->logger->error(__METHOD__ . '(): Directory \'' . dirname($filePath) . '\' is not writable.', array('app' => 'core')); - return false; - } elseif (is_writable(dirname($filePath)) && file_exists($filePath) && !is_writable($filePath)) { - $this->logger->error(__METHOD__ . '(): File \'' . $filePath . '\' is not writable.', array('app' => 'core')); - return false; - } - } - if (!$this->valid()) { - return false; - } - - $imageType = $this->imageType; - if ($mimeType !== null) { - switch ($mimeType) { - case 'image/gif': - $imageType = IMAGETYPE_GIF; - break; - case 'image/jpeg': - $imageType = IMAGETYPE_JPEG; - break; - case 'image/png': - $imageType = IMAGETYPE_PNG; - break; - case 'image/x-xbitmap': - $imageType = IMAGETYPE_XBM; - break; - case 'image/bmp': - case 'image/x-ms-bmp': - $imageType = IMAGETYPE_BMP; - break; - default: - throw new Exception('\OC_Image::_output(): "' . $mimeType . '" is not supported when forcing a specific output format'); - } - } - - switch ($imageType) { - case IMAGETYPE_GIF: - $retVal = imagegif($this->resource, $filePath); - break; - case IMAGETYPE_JPEG: - $retVal = imagejpeg($this->resource, $filePath); - break; - case IMAGETYPE_PNG: - $retVal = imagepng($this->resource, $filePath); - break; - case IMAGETYPE_XBM: - if (function_exists('imagexbm')) { - $retVal = imagexbm($this->resource, $filePath); - } else { - throw new Exception('\OC_Image::_output(): imagexbm() is not supported.'); - } - - break; - case IMAGETYPE_WBMP: - $retVal = imagewbmp($this->resource, $filePath); - break; - case IMAGETYPE_BMP: - $retVal = imagebmp($this->resource, $filePath, $this->bitDepth); - break; - default: - $retVal = imagepng($this->resource, $filePath); - } - return $retVal; - } - - /** - * Prints the image when called as $image(). - */ - public function __invoke() { - return $this->show(); - } - - /** - * @return resource Returns the image resource in any. - */ - public function resource() { - return $this->resource; - } - - /** - * @return null|string Returns the raw image data. - */ - public function data() { - if (!$this->valid()) { - return null; - } - ob_start(); - switch ($this->mimeType) { - case "image/png": - $res = imagepng($this->resource); - break; - case "image/jpeg": - $res = imagejpeg($this->resource); - break; - case "image/gif": - $res = imagegif($this->resource); - break; - default: - $res = imagepng($this->resource); - $this->logger->info('OC_Image->data. Could not guess mime-type, defaulting to png', array('app' => 'core')); - break; - } - if (!$res) { - $this->logger->error('OC_Image->data. Error getting image data.', array('app' => 'core')); - } - return ob_get_clean(); - } - - /** - * @return string - base64 encoded, which is suitable for embedding in a VCard. - */ - function __toString() { - return base64_encode($this->data()); - } - - /** - * (I'm open for suggestions on better method name ;) - * Get the orientation based on EXIF data. - * - * @return int The orientation or -1 if no EXIF data is available. - */ - public function getOrientation() { - if ($this->imageType !== IMAGETYPE_JPEG) { - $this->logger->debug('OC_Image->fixOrientation() Image is not a JPEG.', array('app' => 'core')); - return -1; - } - if (!is_callable('exif_read_data')) { - $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', array('app' => 'core')); - return -1; - } - if (!$this->valid()) { - $this->logger->debug('OC_Image->fixOrientation() No image loaded.', array('app' => 'core')); - return -1; - } - if (is_null($this->filePath) || !is_readable($this->filePath)) { - $this->logger->debug('OC_Image->fixOrientation() No readable file path set.', array('app' => 'core')); - return -1; - } - $exif = @exif_read_data($this->filePath, 'IFD0'); - if (!$exif) { - return -1; - } - if (!isset($exif['Orientation'])) { - return -1; - } - return $exif['Orientation']; - } - - /** - * (I'm open for suggestions on better method name ;) - * Fixes orientation based on EXIF data. - * - * @return bool. - */ - public function fixOrientation() { - $o = $this->getOrientation(); - $this->logger->debug('OC_Image->fixOrientation() Orientation: ' . $o, array('app' => 'core')); - $rotate = 0; - $flip = false; - switch ($o) { - case -1: - return false; //Nothing to fix - case 1: - $rotate = 0; - break; - case 2: - $rotate = 0; - $flip = true; - break; - case 3: - $rotate = 180; - break; - case 4: - $rotate = 180; - $flip = true; - break; - case 5: - $rotate = 90; - $flip = true; - break; - case 6: - $rotate = 270; - break; - case 7: - $rotate = 270; - $flip = true; - break; - case 8: - $rotate = 90; - break; - } - if($flip && function_exists('imageflip')) { - imageflip($this->resource, IMG_FLIP_HORIZONTAL); - } - if ($rotate) { - $res = imagerotate($this->resource, $rotate, 0); - if ($res) { - if (imagealphablending($res, true)) { - if (imagesavealpha($res, true)) { - imagedestroy($this->resource); - $this->resource = $res; - return true; - } else { - $this->logger->debug('OC_Image->fixOrientation() Error during alpha-saving', array('app' => 'core')); - return false; - } - } else { - $this->logger->debug('OC_Image->fixOrientation() Error during alpha-blending', array('app' => 'core')); - return false; - } - } else { - $this->logger->debug('OC_Image->fixOrientation() Error during orientation fixing', array('app' => 'core')); - return false; - } - } - return false; - } - - /** - * Loads an image from a local file, a base64 encoded string or a resource created by an imagecreate* function. - * - * @param resource|string $imageRef The path to a local file, a base64 encoded string or a resource created by an imagecreate* function or a file resource (file handle ). - * @return resource|false An image resource or false on error - */ - public function load($imageRef) { - if (is_resource($imageRef)) { - if (get_resource_type($imageRef) == 'gd') { - $this->resource = $imageRef; - return $this->resource; - } elseif (in_array(get_resource_type($imageRef), array('file', 'stream'))) { - return $this->loadFromFileHandle($imageRef); - } - } elseif ($this->loadFromBase64($imageRef) !== false) { - return $this->resource; - } elseif ($this->loadFromFile($imageRef) !== false) { - return $this->resource; - } elseif ($this->loadFromData($imageRef) !== false) { - return $this->resource; - } - $this->logger->debug(__METHOD__ . '(): could not load anything. Giving up!', array('app' => 'core')); - return false; - } - - /** - * Loads an image from an open file handle. - * It is the responsibility of the caller to position the pointer at the correct place and to close the handle again. - * - * @param resource $handle - * @return resource|false An image resource or false on error - */ - public function loadFromFileHandle($handle) { - $contents = stream_get_contents($handle); - if ($this->loadFromData($contents)) { - return $this->resource; - } - return false; - } - - /** - * Loads an image from a local file. - * - * @param bool|string $imagePath The path to a local file. - * @return bool|resource An image resource or false on error - */ - public function loadFromFile($imagePath = false) { - // exif_imagetype throws "read error!" if file is less than 12 byte - if (!@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) { - return false; - } - $iType = exif_imagetype($imagePath); - switch ($iType) { - case IMAGETYPE_GIF: - if (imagetypes() & IMG_GIF) { - $this->resource = imagecreatefromgif($imagePath); - // Preserve transparency - imagealphablending($this->resource, true); - imagesavealpha($this->resource, true); - } else { - $this->logger->debug('OC_Image->loadFromFile, GIF images not supported: ' . $imagePath, array('app' => 'core')); - } - break; - case IMAGETYPE_JPEG: - if (imagetypes() & IMG_JPG) { - $this->resource = imagecreatefromjpeg($imagePath); - } else { - $this->logger->debug('OC_Image->loadFromFile, JPG images not supported: ' . $imagePath, array('app' => 'core')); - } - break; - case IMAGETYPE_PNG: - if (imagetypes() & IMG_PNG) { - $this->resource = imagecreatefrompng($imagePath); - // Preserve transparency - imagealphablending($this->resource, true); - imagesavealpha($this->resource, true); - } else { - $this->logger->debug('OC_Image->loadFromFile, PNG images not supported: ' . $imagePath, array('app' => 'core')); - } - break; - case IMAGETYPE_XBM: - if (imagetypes() & IMG_XPM) { - $this->resource = imagecreatefromxbm($imagePath); - } else { - $this->logger->debug('OC_Image->loadFromFile, XBM/XPM images not supported: ' . $imagePath, array('app' => 'core')); - } - break; - case IMAGETYPE_WBMP: - if (imagetypes() & IMG_WBMP) { - $this->resource = imagecreatefromwbmp($imagePath); - } else { - $this->logger->debug('OC_Image->loadFromFile, WBMP images not supported: ' . $imagePath, array('app' => 'core')); - } - break; - case IMAGETYPE_BMP: - $this->resource = $this->imagecreatefrombmp($imagePath); - break; - /* - case IMAGETYPE_TIFF_II: // (intel byte order) - break; - case IMAGETYPE_TIFF_MM: // (motorola byte order) - break; - case IMAGETYPE_JPC: - break; - case IMAGETYPE_JP2: - break; - case IMAGETYPE_JPX: - break; - case IMAGETYPE_JB2: - break; - case IMAGETYPE_SWC: - break; - case IMAGETYPE_IFF: - break; - case IMAGETYPE_ICO: - break; - case IMAGETYPE_SWF: - break; - case IMAGETYPE_PSD: - break; - */ - default: - - // this is mostly file created from encrypted file - $this->resource = imagecreatefromstring(\OC\Files\Filesystem::file_get_contents(\OC\Files\Filesystem::getLocalPath($imagePath))); - $iType = IMAGETYPE_PNG; - $this->logger->debug('OC_Image->loadFromFile, Default', array('app' => 'core')); - break; - } - if ($this->valid()) { - $this->imageType = $iType; - $this->mimeType = image_type_to_mime_type($iType); - $this->filePath = $imagePath; - } - return $this->resource; - } - - /** - * Loads an image from a string of data. - * - * @param string $str A string of image data as read from a file. - * @return bool|resource An image resource or false on error - */ - public function loadFromData($str) { - if (is_resource($str)) { - return false; - } - $this->resource = @imagecreatefromstring($str); - if ($this->fileInfo) { - $this->mimeType = $this->fileInfo->buffer($str); - } - if (is_resource($this->resource)) { - imagealphablending($this->resource, false); - imagesavealpha($this->resource, true); - } - - if (!$this->resource) { - $this->logger->debug('OC_Image->loadFromFile, could not load', array('app' => 'core')); - return false; - } - return $this->resource; - } - - /** - * Loads an image from a base64 encoded string. - * - * @param string $str A string base64 encoded string of image data. - * @return bool|resource An image resource or false on error - */ - public function loadFromBase64($str) { - if (!is_string($str)) { - return false; - } - $data = base64_decode($str); - if ($data) { // try to load from string data - $this->resource = @imagecreatefromstring($data); - if ($this->fileInfo) { - $this->mimeType = $this->fileInfo->buffer($data); - } - if (!$this->resource) { - $this->logger->debug('OC_Image->loadFromBase64, could not load', array('app' => 'core')); - return false; - } - return $this->resource; - } else { - return false; - } - } - - /** - * Create a new image from file or URL - * - * @link http://www.programmierer-forum.de/function-imagecreatefrombmp-laeuft-mit-allen-bitraten-t143137.htm - * @version 1.00 - * @param string $fileName <p> - * Path to the BMP image. - * </p> - * @return bool|resource an image resource identifier on success, <b>FALSE</b> on errors. - */ - private function imagecreatefrombmp($fileName) { - if (!($fh = fopen($fileName, 'rb'))) { - $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName, array('app' => 'core')); - return false; - } - // read file header - $meta = unpack('vtype/Vfilesize/Vreserved/Voffset', fread($fh, 14)); - // check for bitmap - if ($meta['type'] != 19778) { - fclose($fh); - $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName . ' is not a bitmap!', array('app' => 'core')); - return false; - } - // read image header - $meta += unpack('Vheadersize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vcolors/Vimportant', fread($fh, 40)); - // read additional 16bit header - if ($meta['bits'] == 16) { - $meta += unpack('VrMask/VgMask/VbMask', fread($fh, 12)); - } - // set bytes and padding - $meta['bytes'] = $meta['bits'] / 8; - $this->bitDepth = $meta['bits']; //remember the bit depth for the imagebmp call - $meta['decal'] = 4 - (4 * (($meta['width'] * $meta['bytes'] / 4) - floor($meta['width'] * $meta['bytes'] / 4))); - if ($meta['decal'] == 4) { - $meta['decal'] = 0; - } - // obtain imagesize - if ($meta['imagesize'] < 1) { - $meta['imagesize'] = $meta['filesize'] - $meta['offset']; - // in rare cases filesize is equal to offset so we need to read physical size - if ($meta['imagesize'] < 1) { - $meta['imagesize'] = @filesize($fileName) - $meta['offset']; - if ($meta['imagesize'] < 1) { - fclose($fh); - $this->logger->warning('imagecreatefrombmp: Can not obtain file size of ' . $fileName . ' is not a bitmap!', array('app' => 'core')); - return false; - } - } - } - // calculate colors - $meta['colors'] = !$meta['colors'] ? pow(2, $meta['bits']) : $meta['colors']; - // read color palette - $palette = array(); - if ($meta['bits'] < 16) { - $palette = unpack('l' . $meta['colors'], fread($fh, $meta['colors'] * 4)); - // in rare cases the color value is signed - if ($palette[1] < 0) { - foreach ($palette as $i => $color) { - $palette[$i] = $color + 16777216; - } - } - } - // create gd image - $im = imagecreatetruecolor($meta['width'], $meta['height']); - if ($im == false) { - fclose($fh); - $this->logger->warning( - 'imagecreatefrombmp: imagecreatetruecolor failed for file "' . $fileName . '" with dimensions ' . $meta['width'] . 'x' . $meta['height'], - array('app' => 'core')); - return false; - } - - $data = fread($fh, $meta['imagesize']); - $p = 0; - $vide = chr(0); - $y = $meta['height'] - 1; - $error = 'imagecreatefrombmp: ' . $fileName . ' has not enough data!'; - // loop through the image data beginning with the lower left corner - while ($y >= 0) { - $x = 0; - while ($x < $meta['width']) { - switch ($meta['bits']) { - case 32: - case 24: - if (!($part = substr($data, $p, 3))) { - $this->logger->warning($error, array('app' => 'core')); - return $im; - } - $color = unpack('V', $part . $vide); - break; - case 16: - if (!($part = substr($data, $p, 2))) { - fclose($fh); - $this->logger->warning($error, array('app' => 'core')); - return $im; - } - $color = unpack('v', $part); - $color[1] = (($color[1] & 0xf800) >> 8) * 65536 + (($color[1] & 0x07e0) >> 3) * 256 + (($color[1] & 0x001f) << 3); - break; - case 8: - $color = unpack('n', $vide . substr($data, $p, 1)); - $color[1] = $palette[$color[1] + 1]; - break; - case 4: - $color = unpack('n', $vide . substr($data, floor($p), 1)); - $color[1] = ($p * 2) % 2 == 0 ? $color[1] >> 4 : $color[1] & 0x0F; - $color[1] = $palette[$color[1] + 1]; - break; - case 1: - $color = unpack('n', $vide . substr($data, floor($p), 1)); - switch (($p * 8) % 8) { - case 0: - $color[1] = $color[1] >> 7; - break; - case 1: - $color[1] = ($color[1] & 0x40) >> 6; - break; - case 2: - $color[1] = ($color[1] & 0x20) >> 5; - break; - case 3: - $color[1] = ($color[1] & 0x10) >> 4; - break; - case 4: - $color[1] = ($color[1] & 0x8) >> 3; - break; - case 5: - $color[1] = ($color[1] & 0x4) >> 2; - break; - case 6: - $color[1] = ($color[1] & 0x2) >> 1; - break; - case 7: - $color[1] = ($color[1] & 0x1); - break; - } - $color[1] = $palette[$color[1] + 1]; - break; - default: - fclose($fh); - $this->logger->warning('imagecreatefrombmp: ' . $fileName . ' has ' . $meta['bits'] . ' bits and this is not supported!', array('app' => 'core')); - return false; - } - imagesetpixel($im, $x, $y, $color[1]); - $x++; - $p += $meta['bytes']; - } - $y--; - $p += $meta['decal']; - } - fclose($fh); - return $im; - } - - /** - * Resizes the image preserving ratio. - * - * @param integer $maxSize The maximum size of either the width or height. - * @return bool - */ - public function resize($maxSize) { - if (!$this->valid()) { - $this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); - return false; - } - $widthOrig = imageSX($this->resource); - $heightOrig = imageSY($this->resource); - $ratioOrig = $widthOrig / $heightOrig; - - if ($ratioOrig > 1) { - $newHeight = round($maxSize / $ratioOrig); - $newWidth = $maxSize; - } else { - $newWidth = round($maxSize * $ratioOrig); - $newHeight = $maxSize; - } - - $this->preciseResize(round($newWidth), round($newHeight)); - return true; - } - - /** - * @param int $width - * @param int $height - * @return bool - */ - public function preciseResize($width, $height) { - if (!$this->valid()) { - $this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); - return false; - } - $widthOrig = imageSX($this->resource); - $heightOrig = imageSY($this->resource); - $process = imagecreatetruecolor($width, $height); - - if ($process == false) { - $this->logger->error(__METHOD__ . '(): Error creating true color image', array('app' => 'core')); - imagedestroy($process); - return false; - } - - // preserve transparency - if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { - imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); - imagealphablending($process, false); - imagesavealpha($process, true); - } - - imagecopyresampled($process, $this->resource, 0, 0, 0, 0, $width, $height, $widthOrig, $heightOrig); - if ($process == false) { - $this->logger->error(__METHOD__ . '(): Error re-sampling process image', array('app' => 'core')); - imagedestroy($process); - return false; - } - imagedestroy($this->resource); - $this->resource = $process; - return true; - } - - /** - * Crops the image to the middle square. If the image is already square it just returns. - * - * @param int $size maximum size for the result (optional) - * @return bool for success or failure - */ - public function centerCrop($size = 0) { - if (!$this->valid()) { - $this->logger->error('OC_Image->centerCrop, No image loaded', array('app' => 'core')); - return false; - } - $widthOrig = imageSX($this->resource); - $heightOrig = imageSY($this->resource); - if ($widthOrig === $heightOrig and $size == 0) { - return true; - } - $ratioOrig = $widthOrig / $heightOrig; - $width = $height = min($widthOrig, $heightOrig); - - if ($ratioOrig > 1) { - $x = ($widthOrig / 2) - ($width / 2); - $y = 0; - } else { - $y = ($heightOrig / 2) - ($height / 2); - $x = 0; - } - if ($size > 0) { - $targetWidth = $size; - $targetHeight = $size; - } else { - $targetWidth = $width; - $targetHeight = $height; - } - $process = imagecreatetruecolor($targetWidth, $targetHeight); - if ($process == false) { - $this->logger->error('OC_Image->centerCrop, Error creating true color image', array('app' => 'core')); - imagedestroy($process); - return false; - } - - // preserve transparency - if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { - imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); - imagealphablending($process, false); - imagesavealpha($process, true); - } - - imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $targetWidth, $targetHeight, $width, $height); - if ($process == false) { - $this->logger->error('OC_Image->centerCrop, Error re-sampling process image ' . $width . 'x' . $height, array('app' => 'core')); - imagedestroy($process); - return false; - } - imagedestroy($this->resource); - $this->resource = $process; - return true; - } - - /** - * Crops the image from point $x$y with dimension $wx$h. - * - * @param int $x Horizontal position - * @param int $y Vertical position - * @param int $w Width - * @param int $h Height - * @return bool for success or failure - */ - public function crop($x, $y, $w, $h) { - if (!$this->valid()) { - $this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); - return false; - } - $process = imagecreatetruecolor($w, $h); - if ($process == false) { - $this->logger->error(__METHOD__ . '(): Error creating true color image', array('app' => 'core')); - imagedestroy($process); - return false; - } - - // preserve transparency - if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { - imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); - imagealphablending($process, false); - imagesavealpha($process, true); - } - - imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $w, $h, $w, $h); - if ($process == false) { - $this->logger->error(__METHOD__ . '(): Error re-sampling process image ' . $w . 'x' . $h, array('app' => 'core')); - imagedestroy($process); - return false; - } - imagedestroy($this->resource); - $this->resource = $process; - return true; - } - - /** - * Resizes the image to fit within a boundary while preserving ratio. - * - * Warning: Images smaller than $maxWidth x $maxHeight will end up being scaled up - * - * @param integer $maxWidth - * @param integer $maxHeight - * @return bool - */ - public function fitIn($maxWidth, $maxHeight) { - if (!$this->valid()) { - $this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); - return false; - } - $widthOrig = imageSX($this->resource); - $heightOrig = imageSY($this->resource); - $ratio = $widthOrig / $heightOrig; - - $newWidth = min($maxWidth, $ratio * $maxHeight); - $newHeight = min($maxHeight, $maxWidth / $ratio); - - $this->preciseResize(round($newWidth), round($newHeight)); - return true; - } - - /** - * Shrinks larger images to fit within specified boundaries while preserving ratio. - * - * @param integer $maxWidth - * @param integer $maxHeight - * @return bool - */ - public function scaleDownToFit($maxWidth, $maxHeight) { - if (!$this->valid()) { - $this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); - return false; - } - $widthOrig = imageSX($this->resource); - $heightOrig = imageSY($this->resource); - - if ($widthOrig > $maxWidth || $heightOrig > $maxHeight) { - return $this->fitIn($maxWidth, $maxHeight); - } - - return false; - } - - /** - * Destroys the current image and resets the object - */ - public function destroy() { - if ($this->valid()) { - imagedestroy($this->resource); - } - $this->resource = null; - } - - public function __destruct() { - $this->destroy(); - } -} - -if (!function_exists('imagebmp')) { - /** - * Output a BMP image to either the browser or a file - * - * @link http://www.ugia.cn/wp-data/imagebmp.php - * @author legend <legendsky@hotmail.com> - * @link http://www.programmierer-forum.de/imagebmp-gute-funktion-gefunden-t143716.htm - * @author mgutt <marc@gutt.it> - * @version 1.00 - * @param string $fileName [optional] <p>The path to save the file to.</p> - * @param int $bit [optional] <p>Bit depth, (default is 24).</p> - * @param int $compression [optional] - * @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure. - */ - function imagebmp($im, $fileName = '', $bit = 24, $compression = 0) { - if (!in_array($bit, array(1, 4, 8, 16, 24, 32))) { - $bit = 24; - } else if ($bit == 32) { - $bit = 24; - } - $bits = pow(2, $bit); - imagetruecolortopalette($im, true, $bits); - $width = imagesx($im); - $height = imagesy($im); - $colorsNum = imagecolorstotal($im); - $rgbQuad = ''; - if ($bit <= 8) { - for ($i = 0; $i < $colorsNum; $i++) { - $colors = imagecolorsforindex($im, $i); - $rgbQuad .= chr($colors['blue']) . chr($colors['green']) . chr($colors['red']) . "\0"; - } - $bmpData = ''; - if ($compression == 0 || $bit < 8) { - $compression = 0; - $extra = ''; - $padding = 4 - ceil($width / (8 / $bit)) % 4; - if ($padding % 4 != 0) { - $extra = str_repeat("\0", $padding); - } - for ($j = $height - 1; $j >= 0; $j--) { - $i = 0; - while ($i < $width) { - $bin = 0; - $limit = $width - $i < 8 / $bit ? (8 / $bit - $width + $i) * $bit : 0; - for ($k = 8 - $bit; $k >= $limit; $k -= $bit) { - $index = imagecolorat($im, $i, $j); - $bin |= $index << $k; - $i++; - } - $bmpData .= chr($bin); - } - $bmpData .= $extra; - } - } // RLE8 - else if ($compression == 1 && $bit == 8) { - for ($j = $height - 1; $j >= 0; $j--) { - $lastIndex = "\0"; - $sameNum = 0; - for ($i = 0; $i <= $width; $i++) { - $index = imagecolorat($im, $i, $j); - if ($index !== $lastIndex || $sameNum > 255) { - if ($sameNum != 0) { - $bmpData .= chr($sameNum) . chr($lastIndex); - } - $lastIndex = $index; - $sameNum = 1; - } else { - $sameNum++; - } - } - $bmpData .= "\0\0"; - } - $bmpData .= "\0\1"; - } - $sizeQuad = strlen($rgbQuad); - $sizeData = strlen($bmpData); - } else { - $extra = ''; - $padding = 4 - ($width * ($bit / 8)) % 4; - if ($padding % 4 != 0) { - $extra = str_repeat("\0", $padding); - } - $bmpData = ''; - for ($j = $height - 1; $j >= 0; $j--) { - for ($i = 0; $i < $width; $i++) { - $index = imagecolorat($im, $i, $j); - $colors = imagecolorsforindex($im, $index); - if ($bit == 16) { - $bin = 0 << $bit; - $bin |= ($colors['red'] >> 3) << 10; - $bin |= ($colors['green'] >> 3) << 5; - $bin |= $colors['blue'] >> 3; - $bmpData .= pack("v", $bin); - } else { - $bmpData .= pack("c*", $colors['blue'], $colors['green'], $colors['red']); - } - } - $bmpData .= $extra; - } - $sizeQuad = 0; - $sizeData = strlen($bmpData); - $colorsNum = 0; - } - $fileHeader = 'BM' . pack('V3', 54 + $sizeQuad + $sizeData, 0, 54 + $sizeQuad); - $infoHeader = pack('V3v2V*', 0x28, $width, $height, 1, $bit, $compression, $sizeData, 0, 0, $colorsNum, 0); - if ($fileName != '') { - $fp = fopen($fileName, 'wb'); - fwrite($fp, $fileHeader . $infoHeader . $rgbQuad . $bmpData); - fclose($fp); - return true; - } - echo $fileHeader . $infoHeader . $rgbQuad . $bmpData; - return true; - } -} - -if (!function_exists('exif_imagetype')) { - /** - * Workaround if exif_imagetype does not exist - * - * @link http://www.php.net/manual/en/function.exif-imagetype.php#80383 - * @param string $fileName - * @return string|boolean - */ - function exif_imagetype($fileName) { - if (($info = getimagesize($fileName)) !== false) { - return $info[2]; - } - return false; - } -} |