commit 6e1bdaf4198f9eb7b4124550d3ad07da2a0226e4
author Winson Chung <winsonc@google.com> Tue May 29 17:03:45 2012 -0700
committer Winson Chung <winsonc@google.com> Tue May 29 17:04:43 2012 -0700
tree 23d0a219865fd0ecc3d74f76535653330818e56e
parent 68f681bc7a10fc014ae0864c6e2db465ce4c30df

Lowering the threshold for flinging on larger devices. (Bug 6575670)

Change-Id: I969057d6135babef430c60f5b2705179210719bb

src/com/android/launcher2/DeleteDropTarget.java

diff --git a/src/com/android/launcher2/DeleteDropTarget.java b/src/com/android/launcher2/DeleteDropTarget.java
index 1edc2ab..949c035 100644
--- a/src/com/android/launcher2/DeleteDropTarget.java
+++ b/src/com/android/launcher2/DeleteDropTarget.java
@@ -39,7 +39,8 @@
 
 public class DeleteDropTarget extends ButtonDropTarget {
     private static int DELETE_ANIMATION_DURATION = 285;
-    private static int FLIND_DELETE_ANIMATION_DURATION = 350;
+    private static int FLING_DELETE_ANIMATION_DURATION = 350;
+    private static float FLING_TO_DELETE_FRICTION = 0.035f;
     private static int MODE_FLING_DELETE_TO_TRASH = 0;
     private static int MODE_FLING_DELETE_ALONG_VECTOR = 1;
 
@@ -311,22 +312,22 @@
      * progressively.
      */
     private static class FlingAlongVectorAnimatorUpdateListener implements AnimatorUpdateListener {
-        private static float FRICTION = 0.93f;
-
         private DragLayer mDragLayer;
         private PointF mVelocity;
         private Rect mFrom;
         private long mPrevTime;
         private boolean mHasOffsetForScale;
+        private float mFriction;
 
         private final TimeInterpolator mAlphaInterpolator = new DecelerateInterpolator(0.75f);
 
         public FlingAlongVectorAnimatorUpdateListener(DragLayer dragLayer, PointF vel, Rect from,
-                long startTime) {
+                long startTime, float friction) {
             mDragLayer = dragLayer;
             mVelocity = vel;
             mFrom = from;
             mPrevTime = startTime;
+            mFriction = 1f - (dragLayer.getResources().getDisplayMetrics().density * friction);
         }
 
         @Override
@@ -352,8 +353,8 @@
             dragView.setTranslationY(mFrom.top);
             dragView.setAlpha(1f - mAlphaInterpolator.getInterpolation(t));
 
-            mVelocity.x *= FRICTION;
-            mVelocity.y *= FRICTION;
+            mVelocity.x *= mFriction;
+            mVelocity.y *= mFriction;
             mPrevTime = curTime;
         }
     };
@@ -363,7 +364,8 @@
         final Rect from = new Rect();
         dragLayer.getViewRectRelativeToSelf(d.dragView, from);
 
-        return new FlingAlongVectorAnimatorUpdateListener(dragLayer, vel, from, startTime);
+        return new FlingAlongVectorAnimatorUpdateListener(dragLayer, vel, from, startTime,
+                FLING_TO_DELETE_FRICTION);
     }
 
     public void onFlingToDelete(final DragObject d, int x, int y, PointF vel) {
@@ -385,7 +387,7 @@
 
         final ViewConfiguration config = ViewConfiguration.get(mLauncher);
         final DragLayer dragLayer = mLauncher.getDragLayer();
-        final int duration = FLIND_DELETE_ANIMATION_DURATION;
+        final int duration = FLING_DELETE_ANIMATION_DURATION;
         final long startTime = AnimationUtils.currentAnimationTimeMillis();
 
         // NOTE: Because it takes time for the first frame of animation to actually be

src/com/android/launcher2/DragController.java

diff --git a/src/com/android/launcher2/DragController.java b/src/com/android/launcher2/DragController.java
index 1b0ccf5..84f1515 100644
--- a/src/com/android/launcher2/DragController.java
+++ b/src/com/android/launcher2/DragController.java
@@ -17,6 +17,7 @@
 package com.android.launcher2;
 
 import android.content.Context;
+import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.Point;
 import android.graphics.PointF;
@@ -62,7 +63,6 @@
     static final int SCROLL_RIGHT = 1;
 
     private static final float MAX_FLING_DEGREES = 35f;
-    private static final int FLING_TO_DELETE_THRESHOLD_Y_VELOCITY = -1500;
 
     private Launcher mLauncher;
     private Handler mHandler;
@@ -146,14 +146,16 @@
      * @param context The application's context.
      */
     public DragController(Launcher launcher) {
+        Resources r = launcher.getResources();
         mLauncher = launcher;
         mHandler = new Handler();
-        mScrollZone = launcher.getResources().getDimensionPixelSize(R.dimen.scroll_zone);
+        mScrollZone = r.getDimensionPixelSize(R.dimen.scroll_zone);
         mVelocityTracker = VelocityTracker.obtain();
-        mVibrator = (Vibrator)launcher.getSystemService(Context.VIBRATOR_SERVICE);
+        mVibrator = (Vibrator) launcher.getSystemService(Context.VIBRATOR_SERVICE);
 
-        float density = launcher.getResources().getDisplayMetrics().density;
-        mFlingToDeleteThresholdVelocity = (int) (FLING_TO_DELETE_THRESHOLD_Y_VELOCITY * density);
+        float density = r.getDisplayMetrics().density;
+        mFlingToDeleteThresholdVelocity =
+                (int) (r.getInteger(R.integer.config_flingToDeleteMinVelocity) * density);
     }
 
     public boolean dragging() {