Add strokeWidth support for Android. Update propTypes

SignatureCapture.js

@@ -97,7 +97,11 @@ SignatureCapture.propTypes = {
     showBorder: PropTypes.bool,
     showNativeButtons: PropTypes.bool,
     showTitleLabel: PropTypes.bool,
-    maxSize:PropTypes.number
+    maxSize:PropTypes.number,
+    minStrokeWidth: PropTypes.number,
+    maxStrokeWidth: PropTypes.number,
+    strokeColor: PropTypes.string,
+    backgroundColor: PropTypes.string
 };
 
 var RSSignatureView = requireNativeComponent('RSSignatureView', SignatureCapture, {

android/src/main/java/com/rssignaturecapture/RSSignatureCaptureMainView.java

@@ -59,6 +59,10 @@ public RSSignatureCaptureMainView(Context context, Activity activity) {
         ViewGroup.LayoutParams.MATCH_PARENT));
   }
 
+  public RSSignatureCaptureView getSignatureView() {
+    return signatureView;
+  }
+
   public void setSaveFileInExtStorage(Boolean saveFileInExtStorage) {
     this.saveFileInExtStorage = saveFileInExtStorage;
   }

android/src/main/java/com/rssignaturecapture/RSSignatureCaptureView.java

@@ -51,7 +51,8 @@ public class RSSignatureCaptureView extends View {
 	private Canvas mSignatureBitmapCanvas = null;
 	private SignatureCallback callback;
 	private boolean dragged = false;
-	private int SCROLL_THRESHOLD = 50;
+	private boolean multipleTouchDragged = false;
+	private int SCROLL_THRESHOLD = 5;
 
 	public interface SignatureCallback {
 		void onDragged();
@@ -197,6 +198,18 @@ private void ensureSignatureBitmap() {
 		}
 	}
 
+	public void setMinStrokeWidth(int minStrokeWidth) {
+		mMinWidth = minStrokeWidth;
+	}
+
+	public void setMaxStrokeWidth(int maxStrokeWidth) {
+		mMaxWidth = maxStrokeWidth;
+	}
+
+	public void setStrokeColor(int color) {
+		mPaint.setColor(color);
+	}
+
 	private float strokeWidth(float velocity) {
 		return Math.max(mMaxWidth / (velocity + 1), mMinWidth);
 	}
@@ -226,35 +239,42 @@ private ControlTimedPoints calculateCurveControlPoints(TimedPoint s1, TimedPoint
 
 	@Override
 	public boolean onTouchEvent(MotionEvent event) {
-		if (!isEnabled())
+		if (!isEnabled() || event.getPointerCount() > 1 || (multipleTouchDragged && event.getAction() != MotionEvent.ACTION_UP)) {
+		    multipleTouchDragged = true;
 			return false;
+		}
 
 		float eventX = event.getX();
 		float eventY = event.getY();
 
 		switch (event.getAction()) {
 			case MotionEvent.ACTION_DOWN:
+                mLastTouchX = eventX;
+                mLastTouchY = eventY;
 				getParent().requestDisallowInterceptTouchEvent(true);
 				mPoints.clear();
 				mPath.moveTo(eventX, eventY);
-				mLastTouchX = eventX;
-				mLastTouchY = eventY;
 				addPoint(new TimedPoint(eventX, eventY));
 
 			case MotionEvent.ACTION_MOVE:
+                if((Math.abs(mLastTouchX - eventX) < SCROLL_THRESHOLD || Math.abs(mLastTouchY - eventY) < SCROLL_THRESHOLD) && dragged) {
+                    return false;
+                }
 				resetDirtyRect(eventX, eventY);
 				addPoint(new TimedPoint(eventX, eventY));
-				if((Math.abs(mLastTouchX - eventX) > SCROLL_THRESHOLD || Math.abs(mLastTouchY - eventY) > SCROLL_THRESHOLD)){
-					dragged = true;
-				}
+                dragged = true;
 				break;
 
 			case MotionEvent.ACTION_UP:
-				resetDirtyRect(eventX, eventY);
-				addPoint(new TimedPoint(eventX, eventY));
-				getParent().requestDisallowInterceptTouchEvent(true);
-				setIsEmpty(false);
-				sendDragEventToReact();
+			    if(mPoints.size() >= 3) {
+                    resetDirtyRect(eventX, eventY);
+                    addPoint(new TimedPoint(eventX, eventY));
+                    getParent().requestDisallowInterceptTouchEvent(true);
+                    setIsEmpty(false);
+                    sendDragEventToReact();
+			    }
+                dragged = false;
+                multipleTouchDragged = false;
 				break;
 
 			default:

android/src/main/java/com/rssignaturecapture/RSSignatureCaptureViewManager.java

@@ -1,6 +1,7 @@
 package com.rssignaturecapture;
 
 import android.util.Log;
+import android.graphics.Color;
 
 import com.facebook.infer.annotation.Assertions;
 import com.facebook.react.bridge.ReactApplicationContext;
@@ -21,6 +22,10 @@ public class RSSignatureCaptureViewManager extends ViewGroupManager<RSSignatureC
 	public static final String PROPS_VIEW_MODE = "viewMode";
 	public static final String PROPS_SHOW_NATIVE_BUTTONS="showNativeButtons";
 	public static final String PROPS_MAX_SIZE="maxSize";
+	public static final String PROPS_MIN_STROKE_WIDTH="minStrokeWidth";
+	public static final String PROPS_MAX_STROKE_WIDTH="maxStrokeWidth";
+	public static final String PROPS_STROKE_COLOR="strokeColor";
+	public static final String PROPS_BACKGROUND_COLOR="backgroundColor";
 
 	public static final int COMMAND_SAVE_IMAGE = 1;
 	public static final int COMMAND_RESET_IMAGE = 2;
@@ -70,6 +75,37 @@ public void setPropsWidth(RSSignatureCaptureMainView view, @Nullable Integer max
 		}
 	}
 
+	@ReactProp(name = PROPS_MIN_STROKE_WIDTH)
+	public void setPropsMinStrokeWidth(RSSignatureCaptureMainView view, @Nullable int minStrokeWidth) {
+		Log.d("minStrokeWidth:",  ""+minStrokeWidth);
+		if(view!=null){
+			view.getSignatureView().setMinStrokeWidth(minStrokeWidth);
+		}
+	}
+
+	@ReactProp(name = PROPS_MAX_STROKE_WIDTH)
+	public void setPropsMaxStrokeWidth(RSSignatureCaptureMainView view, @Nullable int maxStrokeWidth) {
+		Log.d("maxStrokeWidth:",  ""+maxStrokeWidth);
+		if(view!=null){
+			view.getSignatureView().setMaxStrokeWidth(maxStrokeWidth);
+		}
+	}
+
+	@ReactProp(name = PROPS_STROKE_COLOR)
+	public void setPropsStrokeColor(RSSignatureCaptureMainView view, @Nullable String color) {
+		Log.d("strokeColor:",  ""+color);
+		if(view!=null){
+			view.getSignatureView().setStrokeColor(Color.parseColor(color));
+		}
+	}
+
+	@ReactProp(name = PROPS_BACKGROUND_COLOR)
+	public void setPropsBackgroundColor(RSSignatureCaptureMainView view, @Nullable String color) {
+		Log.d("backgroundColor:",  ""+color);
+		if(view!=null){
+			view.getSignatureView().setBackgroundColor(Color.parseColor(color));
+		}
+	}
 
 	@Override
 	public RSSignatureCaptureMainView createViewInstance(ThemedReactContext context) {