Clean up PointerTracker a bit

Change-Id: If4ff87348fbc40f271c68dad255dbc42f9b26eb6

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

@@ -62,7 +62,6 @@ import com.android.inputmethod.latin.R;
 import com.android.inputmethod.latin.SuggestedWords;
 import com.android.inputmethod.latin.define.ProductionFlag;
 import com.android.inputmethod.latin.settings.DebugSettings;
-import com.android.inputmethod.latin.settings.Settings;
 import com.android.inputmethod.latin.utils.CollectionUtils;
 import com.android.inputmethod.latin.utils.CoordinateUtils;
 import com.android.inputmethod.latin.utils.StaticInnerHandlerWrapper;
@@ -203,7 +202,6 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
 
         private final int mKeyRepeatStartTimeout;
         private final int mKeyRepeatInterval;
-        private final int mLongPressShiftLockTimeout;
         private final int mIgnoreAltCodeKeyTimeout;
         private final int mGestureRecognitionUpdateTime;
 
@@ -215,8 +213,6 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
                     R.styleable.MainKeyboardView_keyRepeatStartTimeout, 0);
             mKeyRepeatInterval = mainKeyboardViewAttr.getInt(
                     R.styleable.MainKeyboardView_keyRepeatInterval, 0);
-            mLongPressShiftLockTimeout = mainKeyboardViewAttr.getInt(
-                    R.styleable.MainKeyboardView_longPressShiftLockTimeout, 0);
             mIgnoreAltCodeKeyTimeout = mainKeyboardViewAttr.getInt(
                     R.styleable.MainKeyboardView_ignoreAltCodeKeyTimeout, 0);
             mGestureRecognitionUpdateTime = mainKeyboardViewAttr.getInt(
@@ -280,32 +276,11 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
         }
 
         @Override
-        public void startLongPressTimer(final PointerTracker tracker) {
+        public void startLongPressTimer(final PointerTracker tracker, final int delay) {
             cancelLongPressTimer();
-            if (tracker == null) {
+            if (delay <= 0) return;
-                return;
-            }
-            final Key key = tracker.getKey();
-            final int delay;
-            switch (key.mCode) {
-            case Constants.CODE_SHIFT:
-                delay = mLongPressShiftLockTimeout;
-                break;
-            default:
-                final int longpressTimeout =
-                        Settings.getInstance().getCurrent().mKeyLongpressTimeout;
-                if (tracker.isInSlidingKeyInputFromModifier()) {
-                    // We use longer timeout for sliding finger input started from the modifier key.
-                    delay = longpressTimeout * 3;
-                } else {
-                    delay = longpressTimeout;
-                }
-                break;
-            }
-            if (delay > 0) {
             sendMessageDelayed(obtainMessage(MSG_LONGPRESS_KEY, tracker), delay);
         }
-        }
 
         @Override
         public void cancelLongPressTimer() {
@@ -901,9 +876,12 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
     }
 
     @Override
-    public void showGestureTrail(final PointerTracker tracker) {
+    public void showGestureTrail(final PointerTracker tracker,
+            final boolean showsFloatingPreviewText) {
         locatePreviewPlacerView();
+        if (showsFloatingPreviewText) {
             mGestureFloatingPreviewText.setPreviewPosition(tracker);
+        }
         mGestureTrailsPreview.setPreviewPosition(tracker);
     }
 

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

@@ -34,6 +34,7 @@ import com.android.inputmethod.latin.InputPointers;
 import com.android.inputmethod.latin.LatinImeLogger;
 import com.android.inputmethod.latin.R;
 import com.android.inputmethod.latin.define.ProductionFlag;
+import com.android.inputmethod.latin.settings.Settings;
 import com.android.inputmethod.latin.utils.CollectionUtils;
 import com.android.inputmethod.latin.utils.CoordinateUtils;
 import com.android.inputmethod.latin.utils.ResourceUtils;
@@ -87,14 +88,14 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         public void dismissKeyPreview(PointerTracker tracker);
         public void showSlidingKeyInputPreview(PointerTracker tracker);
         public void dismissSlidingKeyInputPreview();
-        public void showGestureTrail(PointerTracker tracker);
+        public void showGestureTrail(PointerTracker tracker, boolean showsFloatingPreviewText);
     }
 
     public interface TimerProxy {
         public void startTypingStateTimer(Key typedKey);
         public boolean isTypingState();
         public void startKeyRepeatTimer(PointerTracker tracker);
-        public void startLongPressTimer(PointerTracker tracker);
+        public void startLongPressTimer(PointerTracker tracker, int delay);
         public void cancelLongPressTimer();
         public void startDoubleTapShiftKeyTimer();
         public void cancelDoubleTapShiftKeyTimer();
@@ -112,7 +113,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
             @Override
             public void startKeyRepeatTimer(PointerTracker tracker) {}
             @Override
-            public void startLongPressTimer(PointerTracker tracker) {}
+            public void startLongPressTimer(PointerTracker tracker, int delay) {}
             @Override
             public void cancelLongPressTimer() {}
             @Override
@@ -137,6 +138,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         public final int mTouchNoiseThresholdTime;
         public final int mTouchNoiseThresholdDistance;
         public final int mSuppressKeyPreviewAfterBatchInputDuration;
+        public final int mLongPressShiftLockTimeout;
 
         public static final PointerTrackerParams DEFAULT = new PointerTrackerParams();
 
@@ -145,6 +147,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
             mTouchNoiseThresholdTime = 0;
             mTouchNoiseThresholdDistance = 0;
             mSuppressKeyPreviewAfterBatchInputDuration = 0;
+            mLongPressShiftLockTimeout = 0;
         }
 
         public PointerTrackerParams(final TypedArray mainKeyboardViewAttr) {
@@ -156,6 +159,8 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
                     R.styleable.MainKeyboardView_touchNoiseThresholdDistance, 0);
             mSuppressKeyPreviewAfterBatchInputDuration = mainKeyboardViewAttr.getInt(
                     R.styleable.MainKeyboardView_suppressKeyPreviewAfterBatchInputDuration, 0);
+            mLongPressShiftLockTimeout = mainKeyboardViewAttr.getInt(
+                    R.styleable.MainKeyboardView_longPressShiftLockTimeout, 0);
         }
     }
 
@@ -327,6 +332,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
     // the more keys panel currently being shown. equals null if no panel is active.
     private MoreKeysPanel mMoreKeysPanel;
 
+    private static final int MULTIPLIER_FOR_LONG_PRESS_TIMEOUT_IN_SLIDING_INPUT = 3;
     // true if this pointer is in a sliding key input.
     boolean mIsInSlidingKeyInput;
     // true if this pointer is in a sliding key input from a modifier key,
@@ -602,10 +608,6 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         return mIsInSlidingKeyInput;
     }
 
-    public boolean isInSlidingKeyInputFromModifier() {
-        return mIsInSlidingKeyInputFromModifier;
-    }
-
     public Key getKey() {
         return mCurrentKey;
     }
@@ -753,7 +755,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         return sPointerTrackerQueue.size();
     }
 
-    public boolean isOldestTrackerInQueue() {
+    private boolean isOldestTrackerInQueue() {
         return sPointerTrackerQueue.getOldestElement() == this;
     }
 
@@ -776,7 +778,9 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
             dismissAllMoreKeysPanels();
         }
         mTimerProxy.cancelLongPressTimer();
-        mDrawingProxy.showGestureTrail(this);
+        // A gesture floating preview text will be shown at the oldest pointer/finger on the screen.
+        mDrawingProxy.showGestureTrail(
+                this, isOldestTrackerInQueue() /* showsFloatingPreviewText */);
     }
 
     public void updateBatchInputByTimer(final long eventTime) {
@@ -792,7 +796,9 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         if (mIsTrackingForActionDisabled) {
             return;
         }
-        mDrawingProxy.showGestureTrail(this);
+        // A gesture floating preview text will be shown at the oldest pointer/finger on the screen.
+        mDrawingProxy.showGestureTrail(
+                this, isOldestTrackerInQueue() /* showsFloatingPreviewText */);
     }
 
     private void updateBatchInput(final long eventTime) {
@@ -833,7 +839,9 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         if (mIsTrackingForActionDisabled) {
             return;
         }
-        mDrawingProxy.showGestureTrail(this);
+        // A gesture floating preview text will be shown at the oldest pointer/finger on the screen.
+        mDrawingProxy.showGestureTrail(
+                this, isOldestTrackerInQueue() /* showsFloatingPreviewText */);
     }
 
     private void cancelBatchInput() {
@@ -1013,7 +1021,9 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
             final int translatedY = mMoreKeysPanel.translateY(y);
             mMoreKeysPanel.onMoveEvent(translatedX, translatedY, mPointerId, eventTime);
             onMoveKey(x, y);
+            if (mIsInSlidingKeyInputFromModifier) {
                 mDrawingProxy.showSlidingKeyInputPreview(this);
+            }
             return;
         }
         onMoveEventInternal(x, y, eventTime);
@@ -1168,8 +1178,10 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
                 slideOutFromOldKey(oldKey, x, y);
             }
         }
+        if (mIsInSlidingKeyInputFromModifier) {
             mDrawingProxy.showSlidingKeyInputPreview(this);
         }
+    }
 
     public void onUpEvent(final int x, final int y, final long eventTime) {
         if (DEBUG_EVENT) {
@@ -1353,7 +1365,22 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
         // We always need to start the long press timer if the key has its more keys regardless of
         // whether or not we are in the sliding input mode.
         if (mIsInSlidingKeyInput && key.mMoreKeys == null) return;
-        mTimerProxy.startLongPressTimer(this);
+        final int delay;
+        switch (key.mCode) {
+        case Constants.CODE_SHIFT:
+            delay = sParams.mLongPressShiftLockTimeout;
+            break;
+        default:
+            final int longpressTimeout = Settings.getInstance().getCurrent().mKeyLongpressTimeout;
+            if (mIsInSlidingKeyInputFromModifier) {
+                // We use longer timeout for sliding finger input started from the modifier key.
+                delay = longpressTimeout * MULTIPLIER_FOR_LONG_PRESS_TIMEOUT_IN_SLIDING_INPUT;
+            } else {
+                delay = longpressTimeout;
+            }
+            break;
+        }
+        mTimerProxy.startLongPressTimer(this, delay);
     }
 
     private void detectAndSendKey(final Key key, final int x, final int y, final long eventTime) {

java/src/com/android/inputmethod/keyboard/internal/GestureFloatingPreviewText.java

@@ -115,9 +115,7 @@ public class GestureFloatingPreviewText extends AbstractDrawingPreview {
 
     @Override
     public void setPreviewPosition(final PointerTracker tracker) {
-        final boolean needsToUpdateLastPointer =
+        if (!isPreviewEnabled()) {
-                tracker.isOldestTrackerInQueue() && isPreviewEnabled();
-        if (!needsToUpdateLastPointer) {
             return;
         }
         tracker.getLastCoordinates(mLastPointerCoords);

java/src/com/android/inputmethod/keyboard/internal/SlidingKeyInputPreview.java

@@ -32,7 +32,7 @@ import com.android.inputmethod.latin.utils.CoordinateUtils;
 public final class SlidingKeyInputPreview extends AbstractDrawingPreview {
     private final float mPreviewBodyRadius;
 
-    private boolean mShowSlidingKeyInputPreview;
+    private boolean mShowsSlidingKeyInputPreview;
     private final int[] mPreviewFrom = CoordinateUtils.newInstance();
     private final int[] mPreviewTo = CoordinateUtils.newInstance();
 
@@ -62,7 +62,7 @@ public final class SlidingKeyInputPreview extends AbstractDrawingPreview {
     }
 
     public void dismissSlidingKeyInputPreview() {
-        mShowSlidingKeyInputPreview = false;
+        mShowsSlidingKeyInputPreview = false;
         getDrawingView().invalidate();
     }
 
@@ -72,7 +72,7 @@ public final class SlidingKeyInputPreview extends AbstractDrawingPreview {
      */
     @Override
     public void drawPreview(final Canvas canvas) {
-        if (!isPreviewEnabled() || !mShowSlidingKeyInputPreview) {
+        if (!isPreviewEnabled() || !mShowsSlidingKeyInputPreview) {
             return;
         }
 
@@ -90,13 +90,9 @@ public final class SlidingKeyInputPreview extends AbstractDrawingPreview {
      */
     @Override
     public void setPreviewPosition(final PointerTracker tracker) {
-        if (!tracker.isInSlidingKeyInputFromModifier()) {
-            mShowSlidingKeyInputPreview = false;
-            return;
-        }
         tracker.getDownCoordinates(mPreviewFrom);
         tracker.getLastCoordinates(mPreviewTo);
-        mShowSlidingKeyInputPreview = true;
+        mShowsSlidingKeyInputPreview = true;
         getDrawingView().invalidate();
     }
 }