Cleaup non-distinct multitouch related stuff

Change-Id: I09072267217caad2513f83b61d7db1c6d74e18d1

java/src/com/android/inputmethod/keyboard/KeyboardSwitcher.java

@@ -30,7 +30,6 @@ import com.android.inputmethod.keyboard.KeyboardLayoutSet.KeyboardLayoutSetExcep
 import com.android.inputmethod.keyboard.PointerTracker.TimerProxy;
 import com.android.inputmethod.keyboard.internal.KeyboardState;
 import com.android.inputmethod.latin.AudioAndHapticFeedbackManager;
-import com.android.inputmethod.latin.DebugSettings;
 import com.android.inputmethod.latin.ImfUtils;
 import com.android.inputmethod.latin.InputView;
 import com.android.inputmethod.latin.LatinIME;
@@ -69,7 +68,6 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
     private AudioAndHapticFeedbackManager mFeedbackManager;
     private SubtypeSwitcher mSubtypeSwitcher;
     private SharedPreferences mPrefs;
-    private boolean mForceNonDistinctMultitouch;
 
     private InputView mCurrentInputView;
     private MainKeyboardView mKeyboardView;
@@ -109,8 +107,6 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         mSubtypeSwitcher = SubtypeSwitcher.getInstance();
         mState = new KeyboardState(this);
         setContextThemeWrapper(latinIme, getKeyboardTheme(latinIme, prefs));
-        mForceNonDistinctMultitouch = prefs.getBoolean(
-                DebugSettings.FORCE_NON_DISTINCT_MULTITOUCH_KEY, false);
     }
 
     private static KeyboardTheme getKeyboardTheme(Context context, SharedPreferences prefs) {
@@ -341,10 +337,6 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
         return mKeyboardView != null && mKeyboardView.getPointerCount() == 1;
     }
 
-    public boolean hasDistinctMultitouch() {
-        return mKeyboardView != null && mKeyboardView.hasDistinctMultitouch();
-    }
-
     /**
      * Updates state machine to figure out when to automatically switch back to the previous mode.
      */
@@ -371,9 +363,6 @@ public final class KeyboardSwitcher implements KeyboardState.SwitchActions {
             // TODO: Should use LAYER_TYPE_SOFTWARE when hardware acceleration is off?
         }
         mKeyboardView.setKeyboardActionListener(mLatinIME);
-        if (mForceNonDistinctMultitouch) {
-            mKeyboardView.setDistinctMultitouch(false);
-        }
 
         // This always needs to be set since the accessibility state can
         // potentially change without the input view being re-created.

java/src/com/android/inputmethod/keyboard/MainKeyboardView.java

@@ -19,6 +19,7 @@ package com.android.inputmethod.keyboard;
 import android.animation.AnimatorInflater;
 import android.animation.ObjectAnimator;
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
@@ -28,6 +29,7 @@ import android.graphics.Paint.Align;
 import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
 import android.os.Message;
+import android.preference.PreferenceManager;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.Log;
@@ -47,6 +49,7 @@ import com.android.inputmethod.keyboard.PointerTracker.TimerProxy;
 import com.android.inputmethod.keyboard.internal.KeyDrawParams;
 import com.android.inputmethod.keyboard.internal.SuddenJumpingTouchEventHandler;
 import com.android.inputmethod.latin.Constants;
+import com.android.inputmethod.latin.DebugSettings;
 import com.android.inputmethod.latin.LatinIME;
 import com.android.inputmethod.latin.LatinImeLogger;
 import com.android.inputmethod.latin.R;
@@ -142,7 +145,7 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
     private final SuddenJumpingTouchEventHandler mTouchScreenRegulator;
 
     protected KeyDetector mKeyDetector;
-    private boolean mHasDistinctMultitouch;
+    private final boolean mHasDistinctMultitouch;
     private int mOldPointerCount = 1;
     private Key mOldKey;
 
@@ -359,8 +362,12 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
 
         mTouchScreenRegulator = new SuddenJumpingTouchEventHandler(getContext(), this);
 
-        mHasDistinctMultitouch = context.getPackageManager()
+        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        final boolean forceNonDistinctMultitouch = prefs.getBoolean(
+                DebugSettings.FORCE_NON_DISTINCT_MULTITOUCH_KEY, false);
+        final boolean hasDistinctMultitouch = context.getPackageManager()
                 .hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT);
+        mHasDistinctMultitouch = hasDistinctMultitouch && !forceNonDistinctMultitouch;
         final Resources res = getResources();
         final boolean needsPhantomSuddenMoveEventHack = Boolean.parseBoolean(
                 ResourceUtils.getDeviceOverrideValue(res,
@@ -510,18 +517,6 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
         PointerTracker.setGestureHandlingEnabledByUser(gestureHandlingEnabledByUser);
     }
 
-    /**
-     * Returns whether the device has distinct multi-touch panel.
-     * @return true if the device has distinct multi-touch panel.
-     */
-    public boolean hasDistinctMultitouch() {
-        return mHasDistinctMultitouch;
-    }
-
-    public void setDistinctMultitouch(final boolean hasDistinctMultitouch) {
-        mHasDistinctMultitouch = hasDistinctMultitouch;
-    }
-
     @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();

java/src/com/android/inputmethod/keyboard/PointerTracker.java

@@ -686,6 +686,11 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         return (sPointerTrackerQueue == null) ? 1 : sPointerTrackerQueue.size();
     }
 
+    private static boolean isOldestTrackerInQueue(final PointerTracker tracker) {
+        return sPointerTrackerQueue == null
+                || sPointerTrackerQueue.getOldestElement() == tracker;
+    }
+
     private void mayStartBatchInput(final Key key) {
         if (sInGesture || !mGestureStrokeWithPreviewPoints.isStartOfAGesture()) {
             return;
@@ -704,8 +709,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
             mListener.onStartBatchInput();
         }
         mTimerProxy.cancelLongPressTimer();
-        final boolean isOldestTracker = sPointerTrackerQueue.getOldestElement() == this;
+        mDrawingProxy.showGesturePreviewTrail(this, isOldestTrackerInQueue(this));
-        mDrawingProxy.showGesturePreviewTrail(this, isOldestTracker);
     }
 
     private void mayUpdateBatchInput(final long eventTime, final Key key) {
@@ -726,8 +730,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
                 }
             }
         }
-        final boolean isOldestTracker = sPointerTrackerQueue.getOldestElement() == this;
+        mDrawingProxy.showGesturePreviewTrail(this, isOldestTrackerInQueue(this));
-        mDrawingProxy.showGesturePreviewTrail(this, isOldestTracker);
     }
 
     private void mayEndBatchInput(final long eventTime) {
@@ -743,8 +746,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
                 mListener.onEndBatchInput(sAggregratedPointers);
             }
         }
-        final boolean isOldestTracker = sPointerTrackerQueue.getOldestElement() == this;
+        mDrawingProxy.showGesturePreviewTrail(this, isOldestTrackerInQueue(this));
-        mDrawingProxy.showGesturePreviewTrail(this, isOldestTracker);
     }
 
     public void processMotionEvent(final int action, final int x, final int y, final long eventTime,