first commit of free version

2016-01-30 22:28:43 +02:00
commit ecf47809f9
1834 changed files with 447351 additions and 0 deletions
--- a/admin/compiler/joomla_3/wideimage/Operation/Unsharp.php
+++ b/admin/compiler/joomla_3/wideimage/Operation/Unsharp.php
@ -0,0 +1,135 @@
+<?php
+	/**
+ * @author Gasper Kozak
+ * @copyright 2007-2011
+
+    This file is part of WideImage.
+		
+    WideImage is free software; you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 2.1 of the License, or
+    (at your option) any later version.
+		
+    WideImage 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 Lesser General Public License for more details.
+		
+    You should have received a copy of the GNU Lesser General Public License
+    along with WideImage; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    * @package Internal/Operations
+  **/
+	
+	/**
+	 * Unsharp filter
+	 * 
+	 * This filter was taken from http://vikjavev.no/computing/ump.php,
+	 * the original author Torstein Hønsi. Adapted to fit better within
+	 * the Wideimage package.
+	 * 
+	 * @package Internal/Operations
+	 */
+	class WideImage_Operation_Unsharp {
+		/**
+		 * Returns sharpened image
+		 *
+		 * @param WideImage_Image $image
+		 * @param float $amount
+		 * @param int $radius
+		 * @param float $threshold
+		 * @return WideImage_Image
+		 */
+		function execute($image, $amount, $radius, $threshold) {
+			
+			// Attempt to calibrate the parameters to Photoshop:
+			if ($amount > 500)    $amount = 500;
+			$amount = $amount * 0.016;
+			if ($radius > 50)    $radius = 50;
+			$radius = $radius * 2;
+			if ($threshold > 255)    $threshold = 255;
+			
+			$radius = abs(round($radius));     // Only integers make sense.
+			if ($radius == 0) {
+				return $image;
+			}
+					
+			// Gaussian blur matrix
+	
+			$matrix = array(
+				array(1, 2, 1),
+				array(2, 4, 2),
+				array(1, 2, 1)
+			);
+			
+			$blurred = $image->applyConvolution($matrix, 16, 0);
+			
+			if($threshold > 0) {
+				// Calculate the difference between the blurred pixels and the original
+				// and set the pixels
+				for ($x = 0; $x < $image->getWidth(); $x++) {
+					for ($y = 0; $y < $image->getHeight(); $y++) {
+						$rgbOrig = $image->getRGBAt($x, $y);
+						$rOrig = $rgbOrig["red"];
+						$gOrig = $rgbOrig["green"];
+						$bOrig = $rgbOrig["blue"];
+						 
+						$rgbBlur = $blurred->getRGBAt($x, $y);
+						$rBlur = $rgbBlur["red"];
+						$gBlur = $rgbBlur["green"];
+						$bBlur = $rgbBlur["blue"];
+						
+						// When the masked pixels differ less from the original
+						// than the threshold specifies, they are set to their original value.
+						$rNew = (abs($rOrig - $rBlur) >= $threshold)  
+							? max(0, min(255, ($amount * ($rOrig - $rBlur)) + $rOrig))  
+							: $rOrig;
+						$gNew = (abs($gOrig - $gBlur) >= $threshold)  
+							? max(0, min(255, ($amount * ($gOrig - $gBlur)) + $gOrig))  
+							: $gOrig;
+						$bNew = (abs($bOrig - $bBlur) >= $threshold)  
+							? max(0, min(255, ($amount * ($bOrig - $bBlur)) + $bOrig))  
+							: $bOrig;
+						$rgbNew = array("red" => $rNew, "green" => $gNew, "blue" => $bNew, "alpha" => 0);
+							
+						if (($rOrig != $rNew) || ($gOrig != $gNew) || ($bOrig != $bNew)) {
+							$image->setRGBAt($x, $y, $rgbNew);
+						}
+					}
+				}
+			}
+			else {
+				$w = $image->getWidth();
+				$h = $image->getHeight();
+				for ($x = 0; $x < $w; $x++) {
+					for ($y = 0; $y < $h; $y++) {
+						$rgbOrig = $image->getRGBAt($x, $y);
+						$rOrig = $rgbOrig["red"];
+						$gOrig = $rgbOrig["green"];
+						$bOrig = $rgbOrig["blue"];
+						
+						$rgbBlur = $blurred->getRGBAt($x, $y);
+						$rBlur = $rgbBlur["red"];
+						$gBlur = $rgbBlur["green"];
+						$bBlur = $rgbBlur["blue"];
+						
+						$rNew = ($amount * ($rOrig - $rBlur)) + $rOrig;
+							if($rNew>255){$rNew=255;}
+							elseif($rNew<0){$rNew=0;}
+						$gNew = ($amount * ($gOrig - $gBlur)) + $gOrig;
+							if($gNew>255){$gNew=255;}
+							elseif($gNew<0){$gNew=0;}
+						$bNew = ($amount * ($bOrig - $bBlur)) + $bOrig;
+							if($bNew>255){$bNew=255;}
+							elseif($bNew<0){$bNew=0;}
+						$rgbNew = array("red" => $rNew, "green" => $gNew, "blue" => $bNew, "alpha" => 0);
+						
+						$image->setRGBAt($x, $y, $rgbNew);
+					}
+				}
+			}
+			
+			return $image;
+		}
+	}