2 files changed, 89 insertions, 14 deletions

diff --git a/src/com/android/dialer/list/ListsFragment.java b/src/com/android/dialer/list/ListsFragment.java
index 477db2711..49d6b3af3 100644
--- a/src/com/android/dialer/list/ListsFragment.java
+++ b/src/com/android/dialer/list/ListsFragment.java
@@ -9,12 +9,14 @@ import android.content.CursorLoader;
 import android.content.Loader;
 import android.content.SharedPreferences;
 import android.database.Cursor;
+import android.graphics.Rect;
 import android.net.Uri;
 import android.os.Bundle;
 import android.provider.CallLog;
 import android.support.v13.app.FragmentPagerAdapter;
 import android.support.v4.view.ViewPager;
 import android.support.v4.view.ViewPager.OnPageChangeListener;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -31,6 +33,7 @@ import com.android.dialer.calllog.CallLogFragment;
 import com.android.dialer.calllog.CallLogQuery;
 import com.android.dialer.calllog.CallLogQueryHandler;
 import com.android.dialer.calllog.ContactInfoHelper;
+import com.android.dialer.list.ShortcutCardsAdapter.SwipeableShortcutCard;
 import com.android.dialer.widget.OverlappingPaneLayout;
 import com.android.dialer.widget.OverlappingPaneLayout.PanelSlideListener;
 import com.android.dialerbind.ObjectFactory;
@@ -227,16 +230,8 @@ public class ListsFragment extends Fragment implements CallLogQueryHandler.Liste
                 (ListView) parentView.findViewById(R.id.shortcut_card_list);
         shortcutCardsListView.setAdapter(mMergedAdapter);
 
-        final OverlappingPaneLayout paneLayout = (OverlappingPaneLayout) parentView;
-        // TODO: Remove the notion of a capturable view. The entire view be slideable, once
-        // the framework better supports nested scrolling.
-        paneLayout.setCapturableView(mViewPagerTabs);
-        paneLayout.openPane();
+        setupPaneLayout((OverlappingPaneLayout) parentView, shortcutCardsListView);
 
-        LayoutTransition transition = paneLayout.getLayoutTransition();
-        // Turns on animations for all types of layout changes so that they occur for
-        // height changes.
-        transition.enableTransitionType(LayoutTransition.CHANGING);
         return parentView;
     }
 
@@ -302,4 +297,39 @@ public class ListsFragment extends Fragment implements CallLogQueryHandler.Liste
             mOnPageChangeListeners.get(i).onPageScrollStateChanged(state);
         }
     }
+
+    private void setupPaneLayout(OverlappingPaneLayout paneLayout,
+            final ListView shortcutCardsListView) {
+        // TODO: Remove the notion of a capturable view. The entire view be slideable, once
+        // the framework better supports nested scrolling.
+        paneLayout.setCapturableView(mViewPagerTabs);
+        paneLayout.openPane();
+        paneLayout.setPanelSlideListener(new PanelSlideListener() {
+            @Override
+            public void onPanelSlide(View panel, float slideOffset) {
+                // For every 2 percent that the panel is slid upwards, clip 3 percent from each edge
+                // of the shortcut card, to achieve the animated effect of the shortcut card
+                // rapidly shrinking and disappearing from view when the panel is slid upwards.
+                float ratioCardHidden = (1 - slideOffset) * 1.5f;
+                if (shortcutCardsListView.getCount() > 0) {
+                    SwipeableShortcutCard v =
+                            (SwipeableShortcutCard) shortcutCardsListView.getChildAt(0);
+                    v.clipCard(ratioCardHidden);
+                }
+            }
+
+            @Override
+            public void onPanelOpened(View panel) {
+            }
+
+            @Override
+            public void onPanelClosed(View panel) {
+            }
+        });
+
+        LayoutTransition transition = paneLayout.getLayoutTransition();
+        // Turns on animations for all types of layout changes so that they occur for
+        // height changes.
+        transition.enableTransitionType(LayoutTransition.CHANGING);
+    }
 }
diff --git a/src/com/android/dialer/list/ShortcutCardsAdapter.java b/src/com/android/dialer/list/ShortcutCardsAdapter.java
index 0009ee57f..8a1f64c1d 100644
--- a/src/com/android/dialer/list/ShortcutCardsAdapter.java
+++ b/src/com/android/dialer/list/ShortcutCardsAdapter.java
@@ -20,6 +20,7 @@ import android.content.Context;
 import android.content.res.Resources;
 import android.database.Cursor;
 import android.database.DataSetObserver;
+import android.graphics.Rect;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
@@ -150,12 +151,12 @@ public class ShortcutCardsAdapter extends BaseAdapter {
 
     @Override
     public View getView(int position, View convertView, ViewGroup parent) {
-        final SwipeableCallLogRow wrapper;
+        final SwipeableShortcutCard wrapper;
         if (convertView == null) {
-            wrapper = new SwipeableCallLogRow(mContext);
+            wrapper = new SwipeableShortcutCard(mContext);
             wrapper.setOnItemSwipeListener(mCallLogOnItemSwipeListener);
         } else {
-            wrapper = (SwipeableCallLogRow) convertView;
+            wrapper = (SwipeableShortcutCard) convertView;
         }
 
         // Special case wrapper view for the most recent call log item. This allows
@@ -186,11 +187,11 @@ public class ShortcutCardsAdapter extends BaseAdapter {
     /**
      * The swipeable call log row.
      */
-    private class SwipeableCallLogRow extends FrameLayout implements SwipeHelperCallback {
+    class SwipeableShortcutCard extends FrameLayout implements SwipeHelperCallback {
         private SwipeHelper mSwipeHelper;
         private OnItemGestureListener mOnItemSwipeListener;
 
-        public SwipeableCallLogRow(Context context) {
+        public SwipeableShortcutCard(Context context) {
             super(context);
             final float densityScale = getResources().getDisplayMetrics().density;
             final float pagingTouchSlop = ViewConfiguration.get(context)
@@ -270,5 +271,49 @@ public class ShortcutCardsAdapter extends BaseAdapter {
         public void setOnItemSwipeListener(OnItemGestureListener listener) {
             mOnItemSwipeListener = listener;
         }
+
+        private float mPreviousTranslationZ = 0;
+        private Rect mClipRect = new Rect();
+
+        /**
+         * Clips the card by a specified amount.
+         *
+         * @param ratioHidden A float indicating how much of each edge of the card should be
+         *         clipped. If 0, the entire card is displayed. If 0.5f, each edge is hidden
+         *         entirely, thus obscuring the entire card.
+         */
+        public void clipCard(float ratioHidden) {
+            final View viewToClip = getChildAt(0);
+            if (viewToClip == null) {
+                return;
+            }
+            int width = viewToClip.getWidth();
+            int height = viewToClip.getHeight();
+
+            if (ratioHidden <= 0.01f) {
+                viewToClip.setTranslationZ(mPreviousTranslationZ);
+            } else if (viewToClip.getTranslationZ() != 0){
+                mPreviousTranslationZ = viewToClip.getTranslationZ();
+                viewToClip.setTranslationZ(0);
+            }
+
+            if (ratioHidden > 0.5f) {
+                mClipRect.set(0, 0 , 0, 0);
+            } else {
+                int newLeft = (int) (ratioHidden * width);
+                int newRight = (width - newLeft);
+                int newTop = (int) (ratioHidden * height);
+                int newBottom = (height - newTop);
+                mClipRect.set(newLeft, newTop, newRight, newBottom);
+            }
+            viewToClip.setClipBounds(mClipRect);
+
+            // If the view has any children, fade them out of view.
+            final ViewGroup viewGroup = (ViewGroup) viewToClip;
+            final int count = viewGroup.getChildCount();
+            for (int i = 0; i < count; i++) {
+                viewGroup.getChildAt(i).setAlpha(Math.max(0, 1 - 4 * ratioHidden));
+            }
+        }
     }
 }