Adding the ability to post process the screenshot. For example, one may ...

src/android/Screenshot.java

@@ -25,6 +25,10 @@
 
 public class Screenshot extends CordovaPlugin {
 
+	public static interface ProcessingIntf {
+		public Bitmap postProcess(Bitmap screenshot);
+	}
+
 	@Override
 	public boolean execute(String action, JSONArray args, final CallbackContext callbackContext) throws JSONException {
 	 	// starting on ICS, some WebView methods
@@ -42,6 +46,11 @@ public void run() {
 							view.setDrawingCacheEnabled(true);
 							Bitmap bitmap = Bitmap.createBitmap(view.getDrawingCache());
 							view.setDrawingCacheEnabled(false);
+
+							if (cordova.getActivity() instanceof Screenshot.ProcessingIntf) {
+								bitmap = ((Screenshot.ProcessingIntf)cordova.getActivity()).postProcess(bitmap);
+							}
+
 							File folder = new File(Environment.getExternalStorageDirectory(), "Pictures");
 							if (!folder.exists()) {
 								folder.mkdirs();
@@ -57,7 +66,7 @@ public void run() {
 								bitmap.compress(Bitmap.CompressFormat.JPEG, quality == null?100:quality, fos);
 							}
 							JSONObject jsonRes = new JSONObject();
-							jsonRes.put("filePath",f.getAbsolutePath());
+							jsonRes.put("filePath","file://" + f.getAbsolutePath());
 				                        PluginResult result = new PluginResult(PluginResult.Status.OK, jsonRes);
 				                        callbackContext.sendPluginResult(result);
 						}else{

src/ios/Screenshot.h

@@ -11,10 +11,16 @@
 #import <QuartzCore/QuartzCore.h>
 #import <Cordova/CDVPlugin.h>
 
+@protocol ScreenshotPluginDelegate <NSObject>
+- (UIImage *)postProcessScreenShot:(UIImage *)screenshot;
+@end
+
 @interface Screenshot : CDVPlugin {
 }
 
 //- (void)saveScreenshot:(NSArray*)arguments withDict:(NSDictionary*)options;
 - (void)saveScreenshot:(CDVInvokedUrlCommand*)command;
 
+@property (nonatomic, weak) id<ScreenshotPluginDelegate> screenshotDelegate;
+
 @end

src/ios/Screenshot.m

@@ -16,6 +16,13 @@ @implementation Screenshot
 
 @synthesize webView;
 
+- (void)pluginInitialize
+{
+    [super pluginInitialize];
+    if ([self.viewController conformsToProtocol:@protocol(ScreenshotPluginDelegate)])
+        self.screenshotDelegate = (id<ScreenshotPluginDelegate>)self.viewController;
+}
+
 //- (void)saveScreenshot:(NSArray*)arguments withDict:(NSDictionary*)options
 
  - (void)saveScreenshot:(CDVInvokedUrlCommand*)command
@@ -51,13 +58,18 @@ - (void)saveScreenshot:(CDVInvokedUrlCommand*)command
 	CGContextTranslateCTM(ctx, 0, 0);
 	CGContextFillRect(ctx, imageRect);
 
-	[webView.layer renderInContext:ctx];
+    [webView.layer renderInContext:ctx];
 
 	UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
-	NSData *imageData = UIImageJPEGRepresentation(image,[quality floatValue]);
-	[imageData writeToFile:jpgPath atomically:NO];
 
-	UIGraphicsEndImageContext();
+    UIGraphicsEndImageContext();
+
+    UIImage *postProcessedImage = [self.screenshotDelegate postProcessScreenShot:image];
+    if (!postProcessedImage)
+        postProcessedImage = image;
+
+    NSData *imageData = UIImageJPEGRepresentation(postProcessedImage, [quality floatValue]);
+	[imageData writeToFile:jpgPath atomically:NO];
 
 	CDVPluginResult* pluginResult = nil;
 	NSDictionary *jsonObj = [ [NSDictionary alloc]