added clearDrawing() to erase the pad.

Author: bradmartin

README.md

@@ -31,8 +31,11 @@ var frame = require("ui/frame");
 function getDrawing(args) {
     // get reference to the drawing pad
     var pad = frame.topmost().currentPage.getViewById("drawingPad");
-    // then access the 'drawing' property of the signaturepad;
+    // then access the 'drawing' property (Bitmap on Android) of the signaturepad
     var drawingImage = pad.drawing;
+
+    // If you want to clear the signature/drawing...
+    pad.clearDrawing();
 }
 exports.getDrawing = getDrawing;
 ```

demo/app/main-page.js

@@ -23,7 +23,6 @@ function padLoaded(args) {
 }
 exports.padLoaded = padLoaded;
 
-
 function getDrawing(args) {
     var pad = frame.topmost().currentPage.getViewById("drawingPad");
     var pic = pad.drawing;
@@ -33,6 +32,6 @@ exports.getDrawing = getDrawing;
 
 function clearDrawing(args) {
     var pad = frame.topmost().currentPage.getViewById("drawingPad");
-    pad.clear();
+    pad.clearDrawing();
 }
 exports.clearDrawing = clearDrawing;

demo/app/main-page.xml

@@ -18,7 +18,7 @@
                 penWidth="3" />   
 
             <Button text="Get Drawing" tap="getDrawing" />
-            <!--<button text="Clear Drawing" tap="clearDrawing" />-->
+            <button text="Clear Drawing" tap="clearDrawing" />
         </StackLayout>
     </ScrollView>
 </Page>

demo/app/videos/big_buck_bunny.mp4

@@ -44,6 +44,14 @@ var SignaturePad = (function (_super) {
         enumerable: true,
         configurable: true
     });
+    SignaturePad.prototype.clearDrawing = function () {
+        try {
+            this._android.clear();
+        }
+        catch (ex) {
+            console.log("Error clearing the pad: " + ex);
+        }
+    };
     return SignaturePad;
 })(common.SignaturePad);
 exports.SignaturePad = SignaturePad;

demo/app/videos/small.mp4

@@ -34,4 +34,12 @@ export class SignaturePad extends common.SignaturePad {
         }
     }
 
+    public clearDrawing() {
+        try {
+            this._android.clear();
+        } catch (ex) {
+            console.log("Error clearing the pad: " + ex);
+        }
+    }
+
 }

signaturepad.android.js

@@ -9,7 +9,7 @@ declare module "signaturepad" {
     /**
      * Represents a Signature Pad (drawing pad) component.
      */
-    export class Video extends view.View {
+    export class SignaturePad extends view.View {
         public static penColorProperty: dependencyObservable.Property;
         public static penWidthProperty: dependencyObservable.Property;
 
@@ -37,6 +37,11 @@ declare module "signaturepad" {
          * Gets or set the stroke width attribute
          */
         penWidth: any;
+
+        /*
+        * Use this to clear/erase the pad
+        */
+        clearDrawing: Function;
     }
 
     /**