From 8996cf071abf5e6a6458da258a1d59bcaafc3c2c Mon Sep 17 00:00:00 2001
From: Jim Miller <jaggies@google.com>
Date: Wed, 26 Jan 2011 19:02:32 -0800
Subject: Fix 3381324: Restart ripples when the user moves away from the edge.

This changes the behavior of WaveView to start waves again when
the user moves the halo back towards the center.

Change-Id: Ia3b8fbd091e90e83e0c34b98a3060d3236191d7a
---
 core/java/com/android/internal/widget/WaveView.java | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

(limited to 'core')

diff --git a/core/java/com/android/internal/widget/WaveView.java b/core/java/com/android/internal/widget/WaveView.java
index c7a90c4..d6f2e1a 100644
--- a/core/java/com/android/internal/widget/WaveView.java
+++ b/core/java/com/android/internal/widget/WaveView.java
@@ -83,6 +83,8 @@ public class WaveView extends View implements ValueAnimator.AnimatorUpdateListen
     private DrawableHolder mUnlockHalo;
     private int mLockState = STATE_RESET_LOCK;
     private int mGrabbedState = OnTriggerListener.NO_HANDLE;
+    private boolean mWavesRunning;
+    private boolean mFinishWaves;
 
     public WaveView(Context context) {
         this(context, null);
@@ -241,6 +243,7 @@ public class WaveView extends View implements ValueAnimator.AnimatorUpdateListen
 
             case STATE_READY:
                 if (DBG) Log.v(TAG, "State READY");
+                mWaveTimerDelay = WAVE_DELAY;
                 break;
 
             case STATE_START_ATTEMPT:
@@ -264,14 +267,13 @@ public class WaveView extends View implements ValueAnimator.AnimatorUpdateListen
                 mUnlockRing.addAnimTo(DURATION, 0, "scaleY", 1.0f, true);
                 mUnlockRing.addAnimTo(DURATION, 0, "alpha", 1.0f, true);
 
-                postDelayed(mAddWaveAction, mWaveTimerDelay);
-
                 mLockState = STATE_ATTEMPTING;
                 break;
 
             case STATE_ATTEMPTING:
                 if (DBG) Log.v(TAG, "State ATTEMPTING (fingerDown = " + fingerDown + ")");
                 if (dragDistance > mSnapRadius) {
+                    mFinishWaves = true; // don't start any more waves.
                     if (fingerDown) {
                         mUnlockHalo.addAnimTo(0, 0, "x", ringX, true);
                         mUnlockHalo.addAnimTo(0, 0, "y", ringY, true);
@@ -283,6 +285,13 @@ public class WaveView extends View implements ValueAnimator.AnimatorUpdateListen
                         mLockState = STATE_UNLOCK_ATTEMPT;
                     }
                 } else {
+                    // If waves have stopped, we need to kick them off again...
+                    if (!mWavesRunning) {
+                        mWavesRunning = true;
+                        mFinishWaves = false;
+                        // mWaveTimerDelay = WAVE_DELAY;
+                        postDelayed(mAddWaveAction, mWaveTimerDelay);
+                    }
                     mUnlockHalo.addAnimTo(0, 0, "x", mouseX, true);
                     mUnlockHalo.addAnimTo(0, 0, "y", mouseY, true);
                     mUnlockHalo.addAnimTo(0, 0, "scaleX", 1.0f, true);
@@ -429,10 +438,15 @@ public class WaveView extends View implements ValueAnimator.AnimatorUpdateListen
 
                 mCurrentWave = (mCurrentWave+1) % mWaveCount;
                 if (DBG) Log.v(TAG, "WaveTimerDelay: start new wave in " + mWaveTimerDelay);
-                postDelayed(mAddWaveAction, mWaveTimerDelay);
             } else {
                 mWaveTimerDelay += DELAY_INCREMENT2;
             }
+            if (mFinishWaves) {
+                // sentinel used to restart the waves after they've stopped
+                mWavesRunning = false;
+            } else {
+                postDelayed(mAddWaveAction, mWaveTimerDelay);
+            }
         }
     };
 
-- 
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