Rework image manipulation class

This is the first of hopefully more classes using namespaces and proper
classes that can be used as objects rather than CI's singleton
approach. The namespace is mainly used to gain nice autoloading
capabilities and it's not really yet used for separation.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

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;
-	}
-
-}