Merge "resolved conflicts for merge of 12e08f3a to master"

core/java/android/webkit/WebView.java

@@ -3390,6 +3390,14 @@ public class WebView extends AbsoluteLayout
         // to windows overview, the WebView will be temporarily removed from the
         // view system. In that case, do nothing.
         if (getParent() == null) return false;
+
+        // A multi-finger gesture can look like a long press; make sure we don't take
+        // long press actions if we're scaling.
+        final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector();
+        if (detector != null && detector.isInProgress()) {
+            return false;
+        }
+        
         if (mNativeClass != 0 && nativeCursorIsTextInput()) {
             // Send the click so that the textfield is in focus
             centerKeyPressOnTextField();
@@ -4838,7 +4846,7 @@ public class WebView extends AbsoluteLayout
                 mTouchMode != TOUCH_DRAG_LAYER_MODE && !skipScaleGesture) {
 
             // if the page disallows zoom, skip multi-pointer action
-            if (mZoomManager.isZoomScaleFixed()) {
+            if (!mZoomManager.supportsPanDuringZoom() && mZoomManager.isZoomScaleFixed()) {
                 return true;
             }
 
@@ -4849,17 +4857,28 @@ public class WebView extends AbsoluteLayout
                 MotionEvent temp = MotionEvent.obtain(ev);
                 // Clear the original event and set it to
                 // ACTION_POINTER_DOWN.
-                temp.setAction(temp.getAction() &
-                        ~MotionEvent.ACTION_MASK |
-                        MotionEvent.ACTION_POINTER_DOWN);
-                detector.onTouchEvent(temp);
+                try {
+                    temp.setAction(temp.getAction() &
+                            ~MotionEvent.ACTION_MASK |
+                            MotionEvent.ACTION_POINTER_DOWN);
+                    detector.onTouchEvent(temp);
+                } finally {
+                    temp.recycle();
+                }
             }
 
             detector.onTouchEvent(ev);
 
             if (detector.isInProgress()) {
                 mLastTouchTime = eventTime;
-                return true;
+                cancelLongPress();
+                if (!mZoomManager.supportsPanDuringZoom()) {
+                    return true;
+                }
+                mTouchMode = TOUCH_DRAG_MODE;
+                if (mVelocityTracker == null) {
+                    mVelocityTracker = VelocityTracker.obtain();
+                }
             }
 
             x = detector.getFocusX();
@@ -5073,15 +5092,21 @@ public class WebView extends AbsoluteLayout
                         mLastTouchTime = eventTime;
                         break;
                     }
-                    // if it starts nearly horizontal or vertical, enforce it
-                    int ax = Math.abs(deltaX);
-                    int ay = Math.abs(deltaY);
-                    if (ax > MAX_SLOPE_FOR_DIAG * ay) {
-                        mSnapScrollMode = SNAP_X;
-                        mSnapPositive = deltaX > 0;
-                    } else if (ay > MAX_SLOPE_FOR_DIAG * ax) {
-                        mSnapScrollMode = SNAP_Y;
-                        mSnapPositive = deltaY > 0;
+
+                    // Only lock dragging to one axis if we don't have a scale in progress.
+                    // Scaling implies free-roaming movement. Note this is only ever a question
+                    // if mZoomManager.supportsPanDuringZoom() is true.
+                    if (detector != null && !detector.isInProgress()) {
+                        // if it starts nearly horizontal or vertical, enforce it
+                        int ax = Math.abs(deltaX);
+                        int ay = Math.abs(deltaY);
+                        if (ax > MAX_SLOPE_FOR_DIAG * ay) {
+                            mSnapScrollMode = SNAP_X;
+                            mSnapPositive = deltaX > 0;
+                        } else if (ay > MAX_SLOPE_FOR_DIAG * ax) {
+                            mSnapScrollMode = SNAP_Y;
+                            mSnapPositive = deltaY > 0;
+                        }
                     }
 
                     mTouchMode = TOUCH_DRAG_MODE;

core/java/android/webkit/ZoomManager.java

@@ -166,6 +166,11 @@ class ZoomManager {
 
     // whether support multi-touch
     private boolean mSupportMultiTouch;
+    
+    /**
+     * True if we have a touch panel capable of detecting smooth pan/scale at the same time
+     */
+    private boolean mAllowPanAndScale;
 
     // use the framework's ScaleGestureDetector to handle multi-touch
     private ScaleGestureDetector mScaleDetector;
@@ -599,10 +604,12 @@ class ZoomManager {
         // check the preconditions
         assert mWebView.getSettings() != null;
 
-        WebSettings settings = mWebView.getSettings();
-        mSupportMultiTouch = context.getPackageManager().hasSystemFeature(
-                PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH)
+        final WebSettings settings = mWebView.getSettings();
+        final PackageManager pm = context.getPackageManager();
+        mSupportMultiTouch = pm.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH)
                 && settings.supportZoom() && settings.getBuiltInZoomControls();
+        mAllowPanAndScale = pm.hasSystemFeature(
+                PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT);
         if (mSupportMultiTouch && (mScaleDetector == null)) {
             mScaleDetector = new ScaleGestureDetector(context, new ScaleDetectorListener());
         } else if (!mSupportMultiTouch && (mScaleDetector != null)) {
@@ -614,6 +621,10 @@ class ZoomManager {
         return mSupportMultiTouch;
     }
 
+    public boolean supportsPanDuringZoom() {
+        return mAllowPanAndScale;
+    }
+
     /**
      * Notifies the caller that the ZoomManager is requesting that scale related
      * updates should not be sent to webkit. This can occur in cases where the