Added fade effect for the content

library/src/com/jeremyfeinstein/slidingmenu/lib/CustomViewAbove.java

@@ -5,7 +5,10 @@
 
 import android.content.Context;
 import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
 import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.support.v4.view.KeyEventCompat;
 import android.support.v4.view.MotionEventCompat;
@@ -829,6 +832,29 @@ protected void dispatchDraw(Canvas canvas) {
 		mViewBehind.drawShadow(mContent, canvas);
 		mViewBehind.drawFade(mContent, canvas, getPercentOpen());
 		mViewBehind.drawSelector(mContent, canvas, getPercentOpen());
+		drawFade(canvas, getPercentOpen());
+	}
+
+	private final Paint mFadePaint = new Paint();
+	private float mFadeDegree;
+	private boolean mFadeEnabled;
+
+	public void setFadeEnabled(boolean isEnabled) {
+		mFadeEnabled = isEnabled;
+	}
+
+	public void setFadeDegree(float degree) {
+		if (degree > 1.0f || degree < 0.0f)
+			throw new IllegalStateException("The ContentFadeDegree must be between 0.0f and 1.0f");
+		mFadeDegree = degree;
+	}
+
+	private void drawFade(Canvas canvas, float openPercent) {
+		if (!mFadeEnabled)
+			return;
+		final int alpha = (int) (mFadeDegree * 255 * Math.abs(openPercent));
+		mFadePaint.setColor(Color.argb(alpha, 0, 0, 0));
+		canvas.drawRect(getLeft(), 0, getWidth(), getHeight(), mFadePaint);
 	}
 
 	// variables for drawing

library/src/com/jeremyfeinstein/slidingmenu/lib/SlidingMenu.java

@@ -802,6 +802,24 @@ public void setFadeEnabled(boolean b) {
 		mViewBehind.setFadeEnabled(b);
 	}
 
+	/**
+	 * Enables or disables the content's fade in and out
+	 * @param isEnabled true to enable fade, false to disable it
+	 */
+	public void setContentFadeEnabled(boolean isEnabled){
+		mViewAbove.setFadeEnabled(isEnabled);
+	}
+
+	/**
+	 * Sets how much the content fades in and out. Fade must be enabled, see
+	 * {@link #setFadeEnabled(boolean) setFadeEnabled(boolean)}
+	 *
+	 * @param f the new fade degree, between 0.0f and 1.0f
+	 */
+	public void setContentFadeDegree(float f) {
+		mViewAbove.setFadeDegree(f);
+	}
+
 	/**
 	 * Sets how much the SlidingMenu fades in and out. Fade must be enabled, see
 	 * {@link #setFadeEnabled(boolean) setFadeEnabled(boolean)}
@@ -859,9 +877,9 @@ public void addIgnoredView(View v) {
 
 	/**
 	 * Remove a View ignored by the Touch Down event when mode is Fullscreen
-	 *
-	 * @param v a view not wanted to be ignored anymore
-	 */
+	*
+			* @param v a view not wanted to be ignored anymore
+	*/
 	public void removeIgnoredView(View v) {
 		mViewAbove.removeIgnoredView(v);
 	}