ATT-1: Enable rotation of image attachments, adding the javascript cod…

api/src/main/java/org/openmrs/module/attachments/obs/AbstractAttachmentHandler.java

@@ -78,7 +78,7 @@ protected ComplexDataHelper getComplexDataHelper() {
 	/*
 	 * Complex data CRUD - Save (Update)
 	 */
-	abstract protected ValueComplex saveComplexData(Obs obs, AttachmentComplexData complexData);
+	abstract protected ValueComplex saveComplexData(Obs obs, AttachmentComplexData complexData) throws IOException;
 
 	public String[] getSupportedViews() {
 		return supportedViews;
@@ -232,8 +232,15 @@ final public Obs saveObs(Obs obs) {
 			}
 		}
 
-		ValueComplex valueComplex = saveComplexData(obs, complexData);
+		ValueComplex valueComplex = null;
+		try {
+			valueComplex = saveComplexData(obs, complexData);
+		}
+		catch (IOException e) {
+			e.printStackTrace();
+		}
 		obs.setValueComplex(valueComplex.getValueComplex());
 		return obs;
+
 	}
 }

api/src/main/java/org/openmrs/module/attachments/obs/ImageAttachmentHandler.java

@@ -1,5 +1,7 @@
 package org.openmrs.module.attachments.obs;
 
+import java.awt.geom.AffineTransform;
+import java.awt.image.AffineTransformOp;
 import java.awt.image.BufferedImage;
 import java.io.File;
 import java.io.IOException;
@@ -69,7 +71,7 @@ protected boolean deleteComplexData(Obs obs, AttachmentComplexData complexData)
 	}
 
 	@Override
-	protected ValueComplex saveComplexData(Obs obs, AttachmentComplexData complexData) {
+	protected ValueComplex saveComplexData(Obs obs, AttachmentComplexData complexData) throws IOException {
 		int imageHeight = Integer.MAX_VALUE;
 		int imageWidth = Integer.MAX_VALUE;
 
@@ -79,6 +81,42 @@ protected ValueComplex saveComplexData(Obs obs, AttachmentComplexData complexDat
 		File savedFile = AbstractHandler.getComplexDataFile(obs);
 		String savedFileName = savedFile.getName();
 
+		String fileName = complexData.getTitle();
+		BufferedImage Obs = null;
+
+		try {
+			Obs = ImageIO.read(new File(fileName));
+			imageHeight = Obs.getHeight();
+			imageWidth = Obs.getWidth();
+		}
+		catch (IOException e) {
+			e.printStackTrace();
+		}
+
+		if (obs.getValueModifier().equals("instructions.rotate-right")) {
+			// rotate the image provided in complex data
+			final double rads = Math.toRadians(90);
+			final double sin = Math.abs(Math.sin(rads));
+			final double cos = Math.abs(Math.cos(rads));
+			imageHeight = (int) Math.floor(Obs.getHeight() * cos + Obs.getWidth() * sin);
+			imageWidth = (int) Math.floor(Obs.getWidth() * cos + Obs.getHeight() * sin);
+			final BufferedImage rotatedImage = new BufferedImage(imageWidth, imageHeight, Obs.getType());
+
+			final AffineTransform at = new AffineTransform();
+			at.translate(imageWidth / 2, imageHeight / 2);
+			at.rotate(rads, 0, 0);
+			at.translate(-Obs.getWidth() / 2, -Obs.getHeight() / 2);
+			final AffineTransformOp rotateOp = new AffineTransformOp(at, AffineTransformOp.TYPE_BILINEAR);
+
+			rotateOp.filter(Obs, rotatedImage);
+			try {
+				ImageIO.write(rotatedImage, "obs", new File(savedFileName));
+			}
+			catch (IOException e) {
+				e.printStackTrace();
+			}
+		}
+
 		// Get image dimensions
 		try {
 			BufferedImage image = ImageIO.read(savedFile);

omod/src/main/webapp/resources/scripts/directives/thumbnail.js

@@ -123,7 +123,8 @@ angular.module('att.widget.thumbnail')
 
         var saved = Attachment.save({
           uuid: $scope.obs.uuid,
-          comment: $scope.obs.comment
+          comment: $scope.obs.comment,
+          valueModifier: "instruction.rotate-right"
         });
         saved.$promise.then(function(attachment) {
           $scope.obs.uuid = attachment.uuid;
@@ -278,4 +279,4 @@ angular.module('att.widget.thumbnail')
       }
     }
   };
-}]);
+}]);