resolve conflicting assumptions from the merge.

Bug: 7300843
Change-Id: I5894fba34550d1b98f6cbe5ca808820b70e19819

1 files changed, 32 insertions, 16 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/ExpandHelper.java b/packages/SystemUI/src/com/android/systemui/ExpandHelper.java
index dcfd0b3..4e9013f 100644
--- a/packages/SystemUI/src/com/android/systemui/ExpandHelper.java
+++ b/packages/SystemUI/src/com/android/systemui/ExpandHelper.java
@@ -86,6 +86,8 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
     private float mInitialTouchFocusY;
     private float mInitialTouchY;
     private float mInitialTouchSpan;
+    private float mLastFocusY;
+    private float mLastSpanY;
     private int mTouchSlop;
     private int mLastMotionY;
     private float mPopLimit;
@@ -207,11 +209,6 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
                 float focusX = detector.getFocusX();
                 float focusY = detector.getFocusY();
 
-                // your fingers have to be somewhat close to the bounds of the view in question
-                mInitialTouchFocusY = focusY;
-                mInitialTouchSpan = Math.abs(detector.getCurrentSpan());
-                if (DEBUG_SCALE) Slog.d(TAG, "got mInitialTouchSpan: (" + mInitialTouchSpan + ")");
-
                 final View underFocus = findView(focusX, focusY);
                 if (underFocus != null) {
                     startExpanding(underFocus, STRETCH);
@@ -222,24 +219,19 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
             @Override
             public boolean onScale(ScaleGestureDetector detector) {
                 if (DEBUG_SCALE) Slog.v(TAG, "onscale() on " + mCurrView);
-                updateExpansion();
                 return true;
             }
 
             @Override
             public void onScaleEnd(ScaleGestureDetector detector) {
-                if (DEBUG_SCALE) Slog.v(TAG, "onscaleend()");
-                // I guess we're alone now
-                if (DEBUG_SCALE) Slog.d(TAG, "scale end");
-                finishExpanding(false);
-                clearView();
             }
         });
     }
 
     private void updateExpansion() {
+        if (DEBUG_SCALE) Slog.v(TAG, "updateExpansion()");
         // are we scaling or dragging?
-        float span = Math.abs(mSGD.getCurrentSpan()) - mInitialTouchSpan;
+        float span = mSGD.getCurrentSpan() - mInitialTouchSpan;
         span *= USE_SPAN ? 1f : 0f;
         float drag = mSGD.getFocusY() - mInitialTouchFocusY;
         drag *= USE_DRAG ? 1f : 0f;
@@ -251,6 +243,8 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
         mScaler.setHeight(newHeight);
 
         setGlow(calculateGlow(target, newHeight));
+        mLastFocusY = mSGD.getFocusY();
+        mLastSpanY = mSGD.getCurrentSpan();
     }
 
     private float clamp(float target) {
@@ -362,6 +356,13 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
         mSGD.onTouchEvent(ev);
         final int x = (int) mSGD.getFocusX();
         final int y = (int) mSGD.getFocusY();
+
+        mInitialTouchFocusY = y;
+        mInitialTouchSpan = mSGD.getCurrentSpan();
+        mLastFocusY = mInitialTouchFocusY;
+        mLastSpanY = mInitialTouchSpan;
+        if (DEBUG_SCALE) Slog.d(TAG, "set initial span: " + mInitialTouchSpan);
+
         if (mExpanding) {
             return true;
         } else {
@@ -376,8 +377,6 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
                 // detect a vertical pulling gesture with fingers somewhat separated
                 if (DEBUG_SCALE) Slog.v(TAG, "got pull gesture (xspan=" + xspan + "px)");
 
-                mInitialTouchFocusY = y;
-
                 final View underFocus = findView(x, y);
                 if (underFocus != null) {
                     startExpanding(underFocus, PULL);
@@ -424,7 +423,7 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
 
     @Override
     public boolean onTouchEvent(MotionEvent ev) {
-        final int action = ev.getAction();
+        final int action = ev.getActionMasked();
         if (DEBUG_SCALE) Slog.d(TAG, "touch: act=" + MotionEvent.actionToString(action) +
                 " expanding=" + mExpanding +
                 (0 != (mExpansionStyle & BLINDS) ? " (blinds)" : "") +
@@ -481,6 +480,14 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
 
                 break;
             }
+
+            case MotionEvent.ACTION_POINTER_UP:
+            case MotionEvent.ACTION_POINTER_DOWN:
+                if (DEBUG) Slog.d(TAG, "pointer change");
+                mInitialTouchY += mSGD.getFocusY() - mLastFocusY;
+                mInitialTouchSpan += mSGD.getCurrentSpan() - mLastSpanY;
+                break;
+
             case MotionEvent.ACTION_UP:
             case MotionEvent.ACTION_CANCEL:
                 if (DEBUG) Slog.d(TAG, "up/cancel");
@@ -492,8 +499,11 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
     }
 
     private void startExpanding(View v, int expandType) {
+        mExpansionStyle = expandType;
+        if (mExpanding &&  v == mCurrView) {
+            return;
+        }
         mExpanding = true;
-        mExpansionStyle = expandType; 
         if (DEBUG) Slog.d(TAG, "scale type " + expandType + " beginning on view: " + v);
         mCallback.setUserLockedChild(v, true);
         setView(v);
@@ -515,6 +525,8 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
     private void finishExpanding(boolean force) {
         if (!mExpanding) return;
 
+        if (DEBUG) Slog.d(TAG, "scale in finishing on view: " + mCurrView);
+
         float currentHeight = mScaler.getHeight();
         float targetHeight = mSmallSize;
         float h = mScaler.getHeight();
@@ -539,6 +551,10 @@ public class ExpandHelper implements Gefingerpoken, OnClickListener {
         mExpanding = false;
         mExpansionStyle = NONE;
 
+        if (DEBUG) Slog.d(TAG, "wasClosed is: " + wasClosed);
+        if (DEBUG) Slog.d(TAG, "currentHeight is: " + currentHeight);
+        if (DEBUG) Slog.d(TAG, "mSmallSize is: " + mSmallSize);
+        if (DEBUG) Slog.d(TAG, "targetHeight is: " + targetHeight);
         if (DEBUG) Slog.d(TAG, "scale was finished on view: " + mCurrView);
     }