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Remove sudden jump touch event hack

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This hack was for Nexus One and Droid that can't run on ICS or later.

Change-Id: I1f9cef2022b0bbb333235e6b7c311c9785a1d894
This commit is contained in:
Tadashi G. Takaoka 2013-07-31 17:32:41 +09:00
parent 3b5c05f18c
commit 310ea9ab90
3 changed files with 4 additions and 196 deletions
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31
java/res/values/sudden-jumping-touch-event-device-list.xml
View file

@ -1,31 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<!--
/*
**
** Copyright 2011, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->
<resources>
<string-array name="sudden_jumping_touch_event_device_list" translatable="false">
<!-- "Build condition,true" that needs "sudden jump touch event" hack.
See {@link com.android.inputmethod.keyboard.SuddenJumpingTouchEventHandler}. -->
<!-- Nexus One -->
<item>HARDWARE=mahimahi,true</item>
<!-- Droid -->
<item>HARDWARE=sholes,true</item>
<!-- Default value for unknown device -->
<item>,false</item>
</string-array>
</resources>

14
java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
View file

@ -55,7 +55,6 @@ import com.android.inputmethod.keyboard.internal.KeyDrawParams;
import com.android.inputmethod.keyboard.internal.KeyPreviewDrawParams;
import com.android.inputmethod.keyboard.internal.PreviewPlacerView;
import com.android.inputmethod.keyboard.internal.SlidingKeyInputPreview;
import com.android.inputmethod.keyboard.internal.TouchScreenRegulator;
import com.android.inputmethod.latin.Constants;
import com.android.inputmethod.latin.LatinImeLogger;
import com.android.inputmethod.latin.R;
@ -115,8 +114,7 @@ import java.util.WeakHashMap;
* @attr ref R.styleable#MainKeyboardView_suppressKeyPreviewAfterBatchInputDuration
*/
public final class MainKeyboardView extends KeyboardView implements PointerTracker.KeyEventHandler,
PointerTracker.DrawingProxy, MoreKeysPanel.Controller,
TouchScreenRegulator.ProcessMotionEvent {
PointerTracker.DrawingProxy, MoreKeysPanel.Controller {
private static final String TAG = MainKeyboardView.class.getSimpleName();
// TODO: Kill process when the usability study mode was changed.
@ -183,8 +181,6 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
// TODO: Make this parameter customizable by user via settings.
private int mGestureFloatingPreviewTextLingerTimeout;
private final TouchScreenRegulator mTouchScreenRegulator;
private KeyDetector mKeyDetector;
private final boolean mHasDistinctMultitouch;
private int mOldPointerCount = 1;
@ -450,8 +446,6 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
public MainKeyboardView(final Context context, final AttributeSet attrs, final int defStyle) {
super(context, attrs, defStyle);
mTouchScreenRegulator = new TouchScreenRegulator(context, this);
final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
final boolean forceNonDistinctMultitouch = prefs.getBoolean(
DebugSettings.PREF_FORCE_NON_DISTINCT_MULTITOUCH, false);
@ -628,7 +622,6 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
mKeyDetector.setKeyboard(
keyboard, -getPaddingLeft(), -getPaddingTop() + getVerticalCorrection());
PointerTracker.setKeyDetector(mKeyDetector);
mTouchScreenRegulator.setKeyboardGeometry(keyboard.mOccupiedWidth);
mMoreKeysKeyboardCache.clear();
mSpaceKey = keyboard.getKey(Constants.CODE_SPACE);
@ -1050,10 +1043,11 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
if (getKeyboard() == null) {
return false;
}
return mTouchScreenRegulator.onTouchEvent(me);
// TODO: Add multi-touch to single-touch event converter for non-distinct multi-touch
// device.
return processMotionEvent(me);
}
@Override
public boolean processMotionEvent(final MotionEvent me) {
final boolean nonDistinctMultitouch = !mHasDistinctMultitouch;
final int action = me.getActionMasked();

155
java/src/com/android/inputmethod/keyboard/internal/TouchScreenRegulator.java
View file

@ -1,155 +0,0 @@
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.inputmethod.keyboard.internal;
import android.content.Context;
import android.util.Log;
import android.view.MotionEvent;
import com.android.inputmethod.keyboard.MainKeyboardView;
import com.android.inputmethod.latin.LatinImeLogger;
import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.define.ProductionFlag;
import com.android.inputmethod.latin.utils.ResourceUtils;
import com.android.inputmethod.research.ResearchLogger;
public final class TouchScreenRegulator {
private static final String TAG = TouchScreenRegulator.class.getSimpleName();
private static boolean DEBUG_MODE = LatinImeLogger.sDBG;
public interface ProcessMotionEvent {
public boolean processMotionEvent(MotionEvent me);
}
private final ProcessMotionEvent mView;
private final boolean mNeedsSuddenJumpingHack;
/** Whether we've started dropping move events because we found a big jump */
private boolean mDroppingEvents;
/**
* Whether multi-touch disambiguation needs to be disabled if a real multi-touch event has
* occured
*/
private boolean mDisableDisambiguation;
/** The distance threshold at which we start treating the touch session as a multi-touch */
private int mJumpThresholdSquare = Integer.MAX_VALUE;
private int mLastX;
private int mLastY;
// One-seventh of the keyboard width seems like a reasonable threshold
private static final float JUMP_THRESHOLD_RATIO_TO_KEYBOARD_WIDTH = 1.0f / 7.0f;
public TouchScreenRegulator(final Context context, final ProcessMotionEvent view) {
mView = view;
mNeedsSuddenJumpingHack = Boolean.parseBoolean(ResourceUtils.getDeviceOverrideValue(
context.getResources(), R.array.sudden_jumping_touch_event_device_list));
}
public void setKeyboardGeometry(final int keyboardWidth) {
final float jumpThreshold = keyboardWidth * JUMP_THRESHOLD_RATIO_TO_KEYBOARD_WIDTH;
mJumpThresholdSquare = (int)(jumpThreshold * jumpThreshold);
}
/**
* This function checks to see if we need to handle any sudden jumps in the pointer location
* that could be due to a multi-touch being treated as a move by the firmware or hardware.
* Once a sudden jump is detected, all subsequent move events are discarded
* until an UP is received.<P>
* When a sudden jump is detected, an UP event is simulated at the last position and when
* the sudden moves subside, a DOWN event is simulated for the second key.
* @param me the motion event
* @return true if the event was consumed, so that it doesn't continue to be handled by
* {@link MainKeyboardView}.
*/
private boolean handleSuddenJumping(final MotionEvent me) {
if (!mNeedsSuddenJumpingHack)
return false;
final int action = me.getAction();
final int x = (int) me.getX();
final int y = (int) me.getY();
boolean result = false;
// Real multi-touch event? Stop looking for sudden jumps
if (me.getPointerCount() > 1) {
mDisableDisambiguation = true;
}
if (mDisableDisambiguation) {
// If UP, reset the multi-touch flag
if (action == MotionEvent.ACTION_UP) mDisableDisambiguation = false;
return false;
}
switch (action) {
case MotionEvent.ACTION_DOWN:
// Reset the "session"
mDroppingEvents = false;
mDisableDisambiguation = false;
break;
case MotionEvent.ACTION_MOVE:
// Is this a big jump?
final int distanceSquare = (mLastX - x) * (mLastX - x) + (mLastY - y) * (mLastY - y);
// Check the distance.
if (distanceSquare > mJumpThresholdSquare) {
// If we're not yet dropping events, start dropping and send an UP event
if (!mDroppingEvents) {
mDroppingEvents = true;
// Send an up event
MotionEvent translated = MotionEvent.obtain(
me.getEventTime(), me.getEventTime(),
MotionEvent.ACTION_UP,
mLastX, mLastY, me.getMetaState());
mView.processMotionEvent(translated);
translated.recycle();
}
result = true;
} else if (mDroppingEvents) {
// If moves are small and we're already dropping events, continue dropping
result = true;
}
break;
case MotionEvent.ACTION_UP:
if (mDroppingEvents) {
// Send a down event first, as we dropped a bunch of sudden jumps and assume that
// the user is releasing the touch on the second key.
MotionEvent translated = MotionEvent.obtain(me.getEventTime(), me.getEventTime(),
MotionEvent.ACTION_DOWN,
x, y, me.getMetaState());
mView.processMotionEvent(translated);
translated.recycle();
mDroppingEvents = false;
// Let the up event get processed as well, result = false
}
break;
}
// Track the previous coordinate
mLastX = x;
mLastY = y;
return result;
}
public boolean onTouchEvent(final MotionEvent me) {
// If there was a sudden jump, return without processing the actual motion event.
if (handleSuddenJumping(me)) {
if (DEBUG_MODE)
Log.w(TAG, "onTouchEvent: ignore sudden jump " + me);
if (ProductionFlag.USES_DEVELOPMENT_ONLY_DIAGNOSTICS) {
ResearchLogger.suddenJumpingTouchEventHandler_onTouchEvent(me);
}
return true;
}
return mView.processMotionEvent(me);
}
}