calculate number of home screens based on offset step

Author: codeanticode

core/src/processing/android/PWallpaper.java

@@ -177,9 +177,16 @@ public void onTouchEvent(MotionEvent event) {
 
     @Override
     public void onOffsetsChanged(float xOffset, float yOffset,
-                                 float xStep, float yStep, int xPixels, int yPixels) {
+                                 float xOffsetStep, float yOffsetStep,
+                                 int xPixelOffset, int yPixelOffset) {
+
       if (sketch != null) {
-        sketch.displayOffset = xOffset;
+        sketch.homeScreenOffset = xOffset;
+        if (0 < xOffsetStep) {
+          sketch.homeScreenCount = (int)(1 + 1 / xOffsetStep);
+        } else {
+          sketch.homeScreenCount = 1;
+        }
       }
     }
 

core/src/processing/core/PApplet.java

@@ -286,9 +286,11 @@ public class PApplet extends Object implements PConstants {
   /**
    * Offset for wallpapers, when user swipes across home screens.
    */
-  public float displayOffset = 0;
+  public float homeScreenOffset = 0;
 //  public float offsetY = 0;
 
+  public int homeScreenCount = 1;
+
   /**
    * Indicates if the wallpaper is in preview mode.
    */