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Diffstat (limited to 'application/libraries/Imglib.php')
| -rw-r--r-- | application/libraries/Imglib.php | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/application/libraries/Imglib.php b/application/libraries/Imglib.php deleted file mode 100644 index 4d6de21d3..000000000 --- a/application/libraries/Imglib.php +++ /dev/null @@ -1,169 +0,0 @@ -<?php -/* - * Copyright 2014 Florian "Bluewind" Pritz <bluewind@server-speed.net> - * - * Licensed under AGPLv3 - * (see COPYING for full license text) - * - */ - -class Imglib { - /* - * This returns a square thumbnail for the input image - * Source: http://salman-w.blogspot.co.at/2009/04/crop-to-fit-image-using-aspphp.html - */ - public function makeThumb($file, $size = 150, $target_type = null) - { - $source_gdim = imagecreatefromstring(file_get_contents($file)); - if ($source_gdim === false) { - show_error("Unsupported image type"); - } - imagealphablending($source_gdim,false); - imagesavealpha($source_gdim,true); - - list($source_width, $source_height, $source_type) = getimagesize($file); - - if ($target_type === null) { - $target_type = $source_type; - } - - $target_width = $size; - $target_height = $size; - - $source_aspect_ratio = $source_width / $source_height; - $desired_aspect_ratio = $target_width / $target_height; - - if ($source_aspect_ratio > $desired_aspect_ratio) { - // Triggered when source image is wider - $temp_height = $target_height; - $temp_width = round(($target_height * $source_aspect_ratio)); - } else { - // Triggered otherwise (i.e. source image is similar or taller) - $temp_width = $target_width; - $temp_height = round(($target_width / $source_aspect_ratio)); - } - - /* - * Resize the image into a temporary GD image - */ - - $temp_gdim = imagecreatetruecolor($temp_width, $temp_height); - imagealphablending($temp_gdim,false); - imagesavealpha($temp_gdim,true); - imagecopyresampled( - $temp_gdim, - $source_gdim, - 0, 0, - 0, 0, - $temp_width, $temp_height, - $source_width, $source_height - ); - - /* - * Copy cropped region from temporary image into the desired GD image - */ - - $x0 = ($temp_width - $target_width) / 2; - $y0 = ($temp_height - $target_height) / 2; - $thumb = imagecreatetruecolor($target_width, $target_height); - imagealphablending($thumb,false); - imagesavealpha($thumb,true); - imagecopy( - $thumb, - $temp_gdim, - 0, 0, - $x0, $y0, - $target_width, $target_height - ); - - /* - * Fix orientation according to exif tag - */ - try { - $exif = exif_read_data($file); - } catch (ErrorException $e) { - } - - if (isset($exif['Orientation'])) { - $mirror = false; - $deg = 0; - - switch ($exif['Orientation']) { - case 2: - $mirror = true; - break; - case 3: - $deg = 180; - break; - case 4: - $deg = 180; - $mirror = true; - break; - case 5: - $deg = 270; - $mirror = true; - break; - case 6: - $deg = 270; - break; - case 7: - $deg = 90; - $mirror = true; - break; - case 8: - $deg = 90; - break; - } - if ($deg) $thumb = imagerotate($thumb, $deg, 0); - if ($mirror) $thumb = $this->_mirrorImage($thumb); - } - - ob_start(); - switch ($target_type) { - case IMAGETYPE_GIF: - $ret = imagegif($thumb); - break; - case IMAGETYPE_JPEG: - $ret = imagejpeg($thumb); - break; - case IMAGETYPE_PNG: - $ret = imagepng($thumb); - break; - default: - assert(0); - } - $result = ob_get_clean(); - - if (!$ret) { - show_error("Failed to create thumbnail"); - } - - imagedestroy($thumb); - imagedestroy($temp_gdim); - imagedestroy($source_gdim); - - return $result; - } - - private function _mirrorImage($imgsrc) - { - $width = imagesx($imgsrc); - $height = imagesy($imgsrc); - - $src_x = $width -1; - $src_y = 0; - $src_width = -$width; - $src_height = $height; - - $imgdest = imagecreatetruecolor($width, $height); - imagealphablending($imgdest,false); - imagesavealpha($imgdest,true); - - if (imagecopyresampled($imgdest, $imgsrc, 0, 0, $src_x, $src_y, $width, $height, $src_width, $src_height)) { - return $imgdest; - } - - return $imgsrc; - } - -} |