From dce33fe2b42cde8f2cf4ae5ddd5e27b4edc049f5 Mon Sep 17 00:00:00 2001
From: Negue <eugen.bolz@gmail.com>
Date: Sat, 27 Jun 2015 20:23:14 +0200
Subject: [PATCH] Animate Value Bar

---
 Habitica/res/layout/value_bar.xml             |  4 +-
 .../habitica/ui/AvatarWithBarsViewModel.java  | 40 ++++++++++++++++++-
 2 files changed, 41 insertions(+), 3 deletions(-)

diff --git a/Habitica/res/layout/value_bar.xml b/Habitica/res/layout/value_bar.xml
index 3835bad6f..304450091 100644
--- a/Habitica/res/layout/value_bar.xml
+++ b/Habitica/res/layout/value_bar.xml
@@ -49,14 +49,14 @@
                 android:layout_margin="2dip"
                 android:layout_weight="1"
                 android:background="@{barForegroundColor}"
-                app:layout_weight="@{weightToShow}" />
+                app:layout_weight_anim="@{weightToShow}" />
 
             <View
                 android:layout_width="0dip"
                 android:layout_height="wrap_content"
                 android:layout_weight="0"
                 android:padding="2dip"
-                app:layout_weight="@{weightToHide}" />
+                app:layout_weight_anim="@{weightToHide}" />
         </LinearLayout>
 
 
diff --git a/Habitica/src/com/habitrpg/android/habitica/ui/AvatarWithBarsViewModel.java b/Habitica/src/com/habitrpg/android/habitica/ui/AvatarWithBarsViewModel.java
index 04c406cfc..72c327ac8 100644
--- a/Habitica/src/com/habitrpg/android/habitica/ui/AvatarWithBarsViewModel.java
+++ b/Habitica/src/com/habitrpg/android/habitica/ui/AvatarWithBarsViewModel.java
@@ -5,6 +5,8 @@ import android.databinding.BindingAdapter;
 import android.databinding.DataBindingUtil;
 import android.util.Log;
 import android.view.View;
+import android.view.animation.Animation;
+import android.view.animation.Transformation;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 
@@ -77,7 +79,7 @@ public class AvatarWithBarsViewModel {
     // but on a 1.0/0.0 which switches to 0.0/1.0 it shows the blank part full size...
     private void SetValueBar(ValueBarBinding valueBar, float value, float valueMax, String postString, int color, int colorBackground, int textColor)
     {
-        double percent = value / valueMax;
+        double percent = Math.min(1, value / valueMax);
 
         if(percent == 1)
         {
@@ -106,4 +108,40 @@ public class AvatarWithBarsViewModel {
 
         view.setLayoutParams(layout);
     }
+
+    @BindingAdapter("app:layout_weight_anim")
+    public static void setLayoutWeightAnim(View view, float weight) {
+        LayoutWeightAnimation anim = new LayoutWeightAnimation(view, weight);
+        anim.setDuration(1250);
+
+        view.startAnimation(anim);
+    }
+
+    public static class LayoutWeightAnimation extends Animation {
+        float targetWeight;
+        float initializeWeight;
+        View view;
+
+        LinearLayout.LayoutParams layoutParams;
+
+        public LayoutWeightAnimation(View view, float targetWeight) {
+            this.view = view;
+            this.targetWeight = targetWeight;
+
+            layoutParams = (LinearLayout.LayoutParams)view.getLayoutParams();
+            initializeWeight = layoutParams.weight;
+        }
+
+        @Override
+        protected void applyTransformation(float interpolatedTime, Transformation t) {
+            layoutParams.weight = initializeWeight + (targetWeight - initializeWeight) * interpolatedTime;
+            
+           view.requestLayout();
+        }
+
+        @Override
+        public boolean willChangeBounds() {
+            return true;
+        }
+    }
 }