Update rc2.

CHANGES

@@ -1,4 +1,5 @@
 [3.0.0-rc2]
+- Introduced a new behavior-flag: `middleCancel` determines if releasing a click from within the inner-radius will trigger the extended selection or the `defaultIndex` selection.
 - `ChildRegion` is now referred to as `Slice` throughout the API.
 - Style variables now have shorter names that resemble the `ButtonStyle` naming.
 - `setDefaultIndex` now changes the `selectedIndex` if it isn't a valid index.

src/main/java/com/payne/games/piemenu/PieMenu.java

@@ -55,6 +55,15 @@ public class PieMenu extends RadialGroup {
      */
     private boolean infiniteSelectionRange = false;
 
+
+    /**
+     * Determines whether or not releasing a click within the inner-radius
+     * should cancel the selection.
+     * If {@code true} a release in the middle, even if {@link #infiniteSelectionRange}
+     * is set to {@code true}, will trigger a selection of the {@link #defaultIndex}.
+     */
+    private boolean middleCancel = false;
+
     /**
      * Defines the way the Widget looks.
      */
@@ -359,14 +368,35 @@ public void resetHover() {
     @Override
     public int findChildIndexAtStage(float x, float y) {
         int childIndex = findIndexFromAngle(angleAtStage(x,y));
-        if(infiniteSelectionRange)
-            return childIndex;
         stageToLocalCoordinates(vector2.set(x,y));
+        if(infiniteSelectionRange) {
+            if(middleCancel)
+                return isWithinInnerRadius(vector2.x - getWidth()/2, vector2.y - getHeight()/2)
+                        ? getAmountOfChildren() // "getAmountOfChildren" is equivalent to "invalid"
+                        : childIndex;
+            else
+                return childIndex;
+        }
         return isWithinRadii(vector2.x - getWidth()/2, vector2.y - getHeight()/2)
                 ? childIndex
                 : getAmountOfChildren(); // "getAmountOfChildren" is equivalent to "invalid"
     }
 
+    /**
+     * Checks whether or not the input coordinate is within (exclusively)
+     * the inner-radius.
+     *
+     * @param x x-coordinate relative to the center of the widget's
+     * @param y y-coordinate relative to the center of the widget's
+     * @return 'true' only if the coordinates fall within the widget's
+     *         inner radius.
+     */
+    public boolean isWithinInnerRadius(float x, float y) {
+        float distance = pow2(x) + pow2(y);
+        float innerRadSquared = pow2(getInnerRadiusLength());
+        return distance < innerRadSquared;
+    }
+
     /**
      * Used to transform an index into a known range: it'll either remain itself
      * if it was designating a valid child index, else it becomes the
@@ -918,12 +948,32 @@ public boolean isInfiniteSelectionRange() {
     /**
      * Determines whether or not selection should only happen if the mouse is
      * within the radius of the widget.
-     * @see #infiniteSelectionRange
+     * @see #middleCancel
      */
     public void setInfiniteSelectionRange(boolean infiniteSelectionRange) {
         this.infiniteSelectionRange = infiniteSelectionRange;
     }
 
+    /**
+     * Determines whether or not releasing a click within the inner-radius
+     * should cancel the selection.
+     * If {@code true} a release in the middle, even if {@link #infiniteSelectionRange}
+     * is set to {@code true}, will trigger a selection of the {@link #defaultIndex}.
+     */
+    public boolean isMiddleCancel() {
+        return middleCancel;
+    }
+
+    /**
+     * Determines whether or not releasing a click within the inner-radius
+     * should cancel the selection.
+     * If {@code true} a release in the middle, even if {@link #infiniteSelectionRange}
+     * is set to {@code true}, will trigger a selection of the {@link #defaultIndex}.
+     */
+    public void setMiddleCancel(boolean middleCancel) {
+        this.middleCancel = middleCancel;
+    }
+
     /**
      * Returns the currently selected  item's index. A highlighted item can be
      * considered selected, depending on the customized behavior of the Widget.<br>

src/main/java/com/payne/games/piemenu/RadialGroup.java

@@ -807,7 +807,7 @@ public float normalizeAngle(float angle) {
 
     /**
      * Checks whether or not the input coordinate is in between (inclusively)
-     * the {@link #innerRadiusPercent} and the current radius of the widget (which can
+     * the inner-radius and the current radius of the widget (which can
      * be bigger than {@link #minRadius} if you use {@link #setFillParent(boolean)},
      * for example).
      *

src/test/java/com/payne/games/piemenu/individuals/KeyMap.java

@@ -61,6 +61,7 @@ public void create () {
         PieMenu.PieMenuStyle style = new PieMenu.PieMenuStyle();
         style.background = new TextureRegionDrawable(new Texture(Gdx.files.internal("rael_pie.png"))); // image background!
         style.selectedColor = new Color(1,.5f,.5f,.5f);
+        style.downColor = new Color(1,.8f,.8f,.5f);
         menu = new PieMenu(batch, whitePixel, style, 80, 24f/80, 30) {
             /* Since we are using Images, we want to resize them to fit within each sector. */
             @Override
@@ -72,6 +73,8 @@ public void modifyActor(Actor actor, float degreesPerChild, float actorDistanceF
         };
 
         /* Customizing the behavior. */
+        menu.setMiddleCancel(true);
+        menu.setDefaultIndex(2);
         menu.setInfiniteSelectionRange(true);
         menu.setPieMenuListener(new PieMenu.PieMenuClickListener() {
 
@@ -148,6 +151,9 @@ public void changed(ChangeEvent event, Actor actor) {
         imgs.add(getNewStack("coffee-mug.png", Integer.toString(key++)));
         for (int i = 0; i < imgs.size; i++)
             menu.addActor(imgs.get(i));
+
+
+        menu.selectIndex(menu.getDefaultIndex()); // because we would like to trigger that index
     }
 
     private Stack getNewStack(String img, String key) {
@@ -179,7 +185,6 @@ public void render () {
         if (Gdx.input.isButtonJustPressed(Input.Buttons.MIDDLE)) {
             stage.addActor(menu);
             menu.centerOnMouse();
-            menu.resetSelection();
             stage.setKeyboardFocus(menu);
             menu.setVisible(true);
         }