/*
* Copyright (C) 2010 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;
import android.content.Context;
import android.content.res.Resources;
import android.util.Log;
import android.view.MotionEvent;
import android.widget.TextView;
import com.android.inputmethod.keyboard.internal.PointerTrackerQueue;
import com.sugree.inputmethod.latin.R;
import com.sugree.inputmethod.latin.LatinImeLogger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class PointerTracker {
private static final String TAG = PointerTracker.class.getSimpleName();
private static final boolean DEBUG_EVENT = false;
private static final boolean DEBUG_MOVE_EVENT = false;
private static final boolean DEBUG_LISTENER = false;
private static boolean DEBUG_MODE = LatinImeLogger.sDBG;
public interface KeyEventHandler {
/**
* Get KeyDetector object that is used for this PointerTracker.
* @return the KeyDetector object that is used for this PointerTracker
*/
public KeyDetector getKeyDetector();
/**
* Get KeyboardActionListener object that is used to register key code and so on.
* @return the KeyboardActionListner for this PointerTracker
*/
public KeyboardActionListener getKeyboardActionListener();
/**
* Get DrawingProxy object that is used for this PointerTracker.
* @return the DrawingProxy object that is used for this PointerTracker
*/
public DrawingProxy getDrawingProxy();
/**
* Get TimerProxy object that handles key repeat and long press timer event for this
* PointerTracker.
* @return the TimerProxy object that handles key repeat and long press timer event.
*/
public TimerProxy getTimerProxy();
}
public interface DrawingProxy extends MoreKeysPanel.Controller {
public void invalidateKey(Key key);
public TextView inflateKeyPreviewText();
public void showKeyPreview(int keyIndex, PointerTracker tracker);
public void cancelShowKeyPreview(PointerTracker tracker);
public void dismissKeyPreview(PointerTracker tracker);
}
public interface TimerProxy {
public void startKeyRepeatTimer(long delay, int keyIndex, PointerTracker tracker);
public void startLongPressTimer(long delay, int keyIndex, PointerTracker tracker);
public void cancelLongPressTimer();
public void cancelKeyTimers();
public static class Adapter implements TimerProxy {
@Override
public void startKeyRepeatTimer(long delay, int keyIndex, PointerTracker tracker) {}
@Override
public void startLongPressTimer(long delay, int keyIndex, PointerTracker tracker) {}
@Override
public void cancelLongPressTimer() {}
@Override
public void cancelKeyTimers() {}
}
}
private static KeyboardSwitcher sKeyboardSwitcher;
private static boolean sConfigSlidingKeyInputEnabled;
// Timing constants
private static int sDelayBeforeKeyRepeatStart;
private static int sLongPressKeyTimeout;
private static int sLongPressShiftKeyTimeout;
private static int sLongPressSpaceKeyTimeout;
private static int sTouchNoiseThresholdMillis;
private static int sTouchNoiseThresholdDistanceSquared;
private static final List<PointerTracker> sTrackers = new ArrayList<PointerTracker>();
private static PointerTrackerQueue sPointerTrackerQueue;
public final int mPointerId;
private DrawingProxy mDrawingProxy;
private TimerProxy mTimerProxy;
private KeyDetector mKeyDetector;
private KeyboardActionListener mListener = EMPTY_LISTENER;
private Keyboard mKeyboard;
private List<Key> mKeys;
private int mKeyQuarterWidthSquared;
private final TextView mKeyPreviewText;
// The position and time at which first down event occurred.
private long mDownTime;
private long mUpTime;
// The current key index where this pointer is.
private int mKeyIndex = KeyDetector.NOT_A_KEY;
// The position where mKeyIndex was recognized for the first time.
private int mKeyX;
private int mKeyY;
// Last pointer position.
private int mLastX;
private int mLastY;
// true if keyboard layout has been changed.
private boolean mKeyboardLayoutHasBeenChanged;
// true if event is already translated to a key action.
private boolean mKeyAlreadyProcessed;
// true if this pointer has been long-pressed and is showing a more keys panel.
private boolean mIsShowingMoreKeysPanel;
// true if this pointer is repeatable key
private boolean mIsRepeatableKey;
// true if this pointer is in sliding key input
boolean mIsInSlidingKeyInput;
// true if sliding key is allowed.
private boolean mIsAllowedSlidingKeyInput;
// ignore modifier key if true
private boolean mIgnoreModifierKey;
// Empty {@link KeyboardActionListener}
private static final KeyboardActionListener EMPTY_LISTENER =
new KeyboardActionListener.Adapter();
public static void init(boolean hasDistinctMultitouch, Context context) {
if (hasDistinctMultitouch) {
sPointerTrackerQueue = new PointerTrackerQueue();
} else {
sPointerTrackerQueue = null;
}
final Resources res = context.getResources();
sConfigSlidingKeyInputEnabled = res.getBoolean(R.bool.config_sliding_key_input_enabled);
sDelayBeforeKeyRepeatStart = res.getInteger(R.integer.config_delay_before_key_repeat_start);
sLongPressKeyTimeout = res.getInteger(R.integer.config_long_press_key_timeout);
sLongPressShiftKeyTimeout = res.getInteger(R.integer.config_long_press_shift_key_timeout);
sLongPressSpaceKeyTimeout = res.getInteger(R.integer.config_long_press_space_key_timeout);
sTouchNoiseThresholdMillis = res.getInteger(R.integer.config_touch_noise_threshold_millis);
final float touchNoiseThresholdDistance = res.getDimension(
R.dimen.config_touch_noise_threshold_distance);
sTouchNoiseThresholdDistanceSquared = (int)(
touchNoiseThresholdDistance * touchNoiseThresholdDistance);
sKeyboardSwitcher = KeyboardSwitcher.getInstance();
}
public static PointerTracker getPointerTracker(final int id, KeyEventHandler handler) {
final List<PointerTracker> trackers = sTrackers;
// Create pointer trackers until we can get 'id+1'-th tracker, if needed.
for (int i = trackers.size(); i <= id; i++) {
final PointerTracker tracker = new PointerTracker(i, handler);
trackers.add(tracker);
}
return trackers.get(id);
}
public static boolean isAnyInSlidingKeyInput() {
return sPointerTrackerQueue != null ? sPointerTrackerQueue.isAnyInSlidingKeyInput() : false;
}
public static void setKeyboardActionListener(KeyboardActionListener listener) {
for (final PointerTracker tracker : sTrackers) {
tracker.mListener = listener;
}
}
public static void setKeyDetector(KeyDetector keyDetector) {
for (final PointerTracker tracker : sTrackers) {
tracker.setKeyDetectorInner(keyDetector);
// Mark that keyboard layout has been changed.
tracker.mKeyboardLayoutHasBeenChanged = true;
}
}
public static void dismissAllKeyPreviews() {
for (final PointerTracker tracker : sTrackers) {
tracker.setReleasedKeyGraphics(tracker.mKeyIndex);
}
}
public PointerTracker(int id, KeyEventHandler handler) {
if (handler == null)
throw new NullPointerException();
mPointerId = id;
setKeyDetectorInner(handler.getKeyDetector());
mListener = handler.getKeyboardActionListener();
mDrawingProxy = handler.getDrawingProxy();
mTimerProxy = handler.getTimerProxy();
mKeyPreviewText = mDrawingProxy.inflateKeyPreviewText();
}
public TextView getKeyPreviewText() {
return mKeyPreviewText;
}
// Returns true if keyboard has been changed by this callback.
private boolean callListenerOnPressAndCheckKeyboardLayoutChange(Key key, boolean withSliding) {
final boolean ignoreModifierKey = mIgnoreModifierKey && isModifierCode(key.mCode);
if (DEBUG_LISTENER)
Log.d(TAG, "onPress : " + keyCodePrintable(key.mCode) + " sliding=" + withSliding
+ " ignoreModifier=" + ignoreModifierKey);
if (ignoreModifierKey)
return false;
if (key.isEnabled()) {
mListener.onPress(key.mCode, withSliding);
final boolean keyboardLayoutHasBeenChanged = mKeyboardLayoutHasBeenChanged;
mKeyboardLayoutHasBeenChanged = false;
return keyboardLayoutHasBeenChanged;
}
return false;
}
// Note that we need primaryCode argument because the keyboard may in shifted state and the
// primaryCode is different from {@link Key#mCode}.
private void callListenerOnCodeInput(Key key, int primaryCode, int[] keyCodes, int x, int y) {
final boolean ignoreModifierKey = mIgnoreModifierKey && isModifierCode(key.mCode);
if (DEBUG_LISTENER)
Log.d(TAG, "onCodeInput: " + keyCodePrintable(primaryCode)
+ " codes="+ Arrays.toString(keyCodes) + " x=" + x + " y=" + y
+ " ignoreModifier=" + ignoreModifierKey);
if (ignoreModifierKey)
return;
if (key.isEnabled())
mListener.onCodeInput(primaryCode, keyCodes, x, y);
}
private void callListenerOnTextInput(Key key) {
if (DEBUG_LISTENER)
Log.d(TAG, "onTextInput: text=" + key.mOutputText);
if (key.isEnabled())
mListener.onTextInput(key.mOutputText);
}
// Note that we need primaryCode argument because the keyboard may in shifted state and the
// primaryCode is different from {@link Key#mCode}.
private void callListenerOnRelease(Key key, int primaryCode, boolean withSliding) {
final boolean ignoreModifierKey = mIgnoreModifierKey && isModifierCode(key.mCode);
if (DEBUG_LISTENER)
Log.d(TAG, "onRelease : " + keyCodePrintable(primaryCode) + " sliding="
+ withSliding + " ignoreModifier=" + ignoreModifierKey);
if (ignoreModifierKey)
return;
if (key.isEnabled())
mListener.onRelease(primaryCode, withSliding);
}
private void callListenerOnCancelInput() {
if (DEBUG_LISTENER)
Log.d(TAG, "onCancelInput");
mListener.onCancelInput();
}
private void setKeyDetectorInner(KeyDetector keyDetector) {
mKeyDetector = keyDetector;
mKeyboard = keyDetector.getKeyboard();
mKeys = mKeyboard.mKeys;
final int keyQuarterWidth = mKeyboard.mMostCommonKeyWidth / 4;
mKeyQuarterWidthSquared = keyQuarterWidth * keyQuarterWidth;
}
public boolean isInSlidingKeyInput() {
return mIsInSlidingKeyInput;
}
private boolean isValidKeyIndex(int keyIndex) {
return keyIndex >= 0 && keyIndex < mKeys.size();
}
public Key getKey(int keyIndex) {
return isValidKeyIndex(keyIndex) ? mKeys.get(keyIndex) : null;
}
private static boolean isModifierCode(int primaryCode) {
return primaryCode == Keyboard.CODE_SHIFT
|| primaryCode == Keyboard.CODE_SWITCH_ALPHA_SYMBOL;
}
private boolean isModifierInternal(int keyIndex) {
final Key key = getKey(keyIndex);
return key == null ? false : isModifierCode(key.mCode);
}
public boolean isModifier() {
return isModifierInternal(mKeyIndex);
}
private boolean isOnModifierKey(int x, int y) {
return isModifierInternal(mKeyDetector.getKeyIndexAndNearbyCodes(x, y, null));
}
public boolean isOnShiftKey(int x, int y) {
final Key key = getKey(mKeyDetector.getKeyIndexAndNearbyCodes(x, y, null));
return key != null && key.mCode == Keyboard.CODE_SHIFT;
}
public int getKeyIndexOn(int x, int y) {
return mKeyDetector.getKeyIndexAndNearbyCodes(x, y, null);
}
private void setReleasedKeyGraphics(int keyIndex) {
mDrawingProxy.dismissKeyPreview(this);
final Key key = getKey(keyIndex);
if (key != null && key.isEnabled()) {
key.onReleased();
mDrawingProxy.invalidateKey(key);
}
}
private void setPressedKeyGraphics(int keyIndex) {
final Key key = getKey(keyIndex);
if (key != null && key.isEnabled()) {
if (isKeyPreviewRequired(key)) {
mDrawingProxy.showKeyPreview(keyIndex, this);
}
key.onPressed();
mDrawingProxy.invalidateKey(key);
}
}
// The modifier key, such as shift key, should not show its key preview.
private static boolean isKeyPreviewRequired(Key key) {
final int code = key.mCode;
// TODO: Stop hard-coding these key codes here, and add a new key attribute of a key.
if (code == Keyboard.CODE_SPACE || code == Keyboard.CODE_ENTER
|| code == Keyboard.CODE_DELETE || isModifierCode(code)
|| code == Keyboard.CODE_SETTINGS || code == Keyboard.CODE_SHORTCUT) {
return false;
}
return true;
}
public int getLastX() {
return mLastX;
}
public int getLastY() {
return mLastY;
}
public long getDownTime() {
return mDownTime;
}
private int onDownKey(int x, int y, long eventTime) {
mDownTime = eventTime;
return onMoveToNewKey(onMoveKeyInternal(x, y), x, y);
}
private int onMoveKeyInternal(int x, int y) {
mLastX = x;
mLastY = y;
return mKeyDetector.getKeyIndexAndNearbyCodes(x, y, null);
}
private int onMoveKey(int x, int y) {
return onMoveKeyInternal(x, y);
}
private int onMoveToNewKey(int keyIndex, int x, int y) {
mKeyIndex = keyIndex;
mKeyX = x;
mKeyY = y;
return keyIndex;
}
private int onUpKey(int x, int y, long eventTime) {
mUpTime = eventTime;
mKeyIndex = KeyDetector.NOT_A_KEY;
return onMoveKeyInternal(x, y);
}
public void processMotionEvent(int action, int x, int y, long eventTime,
KeyEventHandler handler) {
switch (action) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_POINTER_DOWN:
onDownEvent(x, y, eventTime, handler);
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_POINTER_UP:
onUpEvent(x, y, eventTime);
break;
case MotionEvent.ACTION_MOVE:
onMoveEvent(x, y, eventTime);
break;
case MotionEvent.ACTION_CANCEL:
onCancelEvent(x, y, eventTime);
break;
}
}
public void onDownEvent(int x, int y, long eventTime, KeyEventHandler handler) {
if (DEBUG_EVENT)
printTouchEvent("onDownEvent:", x, y, eventTime);
mDrawingProxy = handler.getDrawingProxy();
mTimerProxy = handler.getTimerProxy();
setKeyboardActionListener(handler.getKeyboardActionListener());
setKeyDetectorInner(handler.getKeyDetector());
// Naive up-to-down noise filter.
final long deltaT = eventTime - mUpTime;
if (deltaT < sTouchNoiseThresholdMillis) {
final int dx = x - mLastX;
final int dy = y - mLastY;
final int distanceSquared = (dx * dx + dy * dy);
if (distanceSquared < sTouchNoiseThresholdDistanceSquared) {
if (DEBUG_MODE)
Log.w(TAG, "onDownEvent: ignore potential noise: time=" + deltaT
+ " distance=" + distanceSquared);
mKeyAlreadyProcessed = true;
return;
}
}
final PointerTrackerQueue queue = sPointerTrackerQueue;
if (queue != null) {
if (isOnModifierKey(x, y)) {
// Before processing a down event of modifier key, all pointers already being
// tracked should be released.
queue.releaseAllPointers(eventTime);
}
queue.add(this);
}
onDownEventInternal(x, y, eventTime);
}
private void onDownEventInternal(int x, int y, long eventTime) {
int keyIndex = onDownKey(x, y, eventTime);
// Sliding key is allowed when 1) enabled by configuration, 2) this pointer starts sliding
// from modifier key, or 3) this pointer's KeyDetector always allows sliding input.
mIsAllowedSlidingKeyInput = sConfigSlidingKeyInputEnabled || isModifierInternal(keyIndex)
|| mKeyDetector.alwaysAllowsSlidingInput();
mKeyboardLayoutHasBeenChanged = false;
mKeyAlreadyProcessed = false;
mIsRepeatableKey = false;
mIsInSlidingKeyInput = false;
mIgnoreModifierKey = false;
if (isValidKeyIndex(keyIndex)) {
// This onPress call may have changed keyboard layout. Those cases are detected at
// {@link #setKeyboard}. In those cases, we should update keyIndex according to the new
// keyboard layout.
if (callListenerOnPressAndCheckKeyboardLayoutChange(getKey(keyIndex), false))
keyIndex = onDownKey(x, y, eventTime);
startRepeatKey(keyIndex);
startLongPressTimer(keyIndex);
setPressedKeyGraphics(keyIndex);
}
}
private void startSlidingKeyInput(Key key) {
if (!mIsInSlidingKeyInput)
mIgnoreModifierKey = isModifierCode(key.mCode);
mIsInSlidingKeyInput = true;
}
public void onMoveEvent(int x, int y, long eventTime) {
if (DEBUG_MOVE_EVENT)
printTouchEvent("onMoveEvent:", x, y, eventTime);
if (mKeyAlreadyProcessed)
return;
final int lastX = mLastX;
final int lastY = mLastY;
final int oldKeyIndex = mKeyIndex;
final Key oldKey = getKey(oldKeyIndex);
int keyIndex = onMoveKey(x, y);
if (isValidKeyIndex(keyIndex)) {
if (oldKey == null) {
// The pointer has been slid in to the new key, but the finger was not on any keys.
// In this case, we must call onPress() to notify that the new key is being pressed.
// This onPress call may have changed keyboard layout. Those cases are detected at
// {@link #setKeyboard}. In those cases, we should update keyIndex according to the
// new keyboard layout.
if (callListenerOnPressAndCheckKeyboardLayoutChange(getKey(keyIndex), true))
keyIndex = onMoveKey(x, y);
onMoveToNewKey(keyIndex, x, y);
startLongPressTimer(keyIndex);
setPressedKeyGraphics(keyIndex);
} else if (isMajorEnoughMoveToBeOnNewKey(x, y, keyIndex)) {
// The pointer has been slid in to the new key from the previous key, we must call
// onRelease() first to notify that the previous key has been released, then call
// onPress() to notify that the new key is being pressed.
setReleasedKeyGraphics(oldKeyIndex);
callListenerOnRelease(oldKey, oldKey.mCode, true);
startSlidingKeyInput(oldKey);
mTimerProxy.cancelKeyTimers();
startRepeatKey(keyIndex);
if (mIsAllowedSlidingKeyInput) {
// This onPress call may have changed keyboard layout. Those cases are detected
// at {@link #setKeyboard}. In those cases, we should update keyIndex according
// to the new keyboard layout.
if (callListenerOnPressAndCheckKeyboardLayoutChange(getKey(keyIndex), true))
keyIndex = onMoveKey(x, y);
onMoveToNewKey(keyIndex, x, y);
startLongPressTimer(keyIndex);
setPressedKeyGraphics(keyIndex);
} else {
// HACK: On some devices, quick successive touches may be translated to sudden
// move by touch panel firmware. This hack detects the case and translates the
// move event to successive up and down events.
final int dx = x - lastX;
final int dy = y - lastY;
final int lastMoveSquared = dx * dx + dy * dy;
if (lastMoveSquared >= mKeyQuarterWidthSquared) {
if (DEBUG_MODE)
Log.w(TAG, String.format("onMoveEvent: sudden move is translated to "
+ "up[%d,%d]/down[%d,%d] events", lastX, lastY, x, y));
onUpEventInternal(lastX, lastY, eventTime);
onDownEventInternal(x, y, eventTime);
} else {
mKeyAlreadyProcessed = true;
setReleasedKeyGraphics(oldKeyIndex);
}
}
}
} else {
if (oldKey != null && isMajorEnoughMoveToBeOnNewKey(x, y, keyIndex)) {
// The pointer has been slid out from the previous key, we must call onRelease() to
// notify that the previous key has been released.
setReleasedKeyGraphics(oldKeyIndex);
callListenerOnRelease(oldKey, oldKey.mCode, true);
startSlidingKeyInput(oldKey);
mTimerProxy.cancelLongPressTimer();
if (mIsAllowedSlidingKeyInput) {
onMoveToNewKey(keyIndex, x, y);
} else {
mKeyAlreadyProcessed = true;
}
}
}
}
public void onUpEvent(int x, int y, long eventTime) {
if (DEBUG_EVENT)
printTouchEvent("onUpEvent :", x, y, eventTime);
final PointerTrackerQueue queue = sPointerTrackerQueue;
if (queue != null) {
if (isModifier()) {
// Before processing an up event of modifier key, all pointers already being
// tracked should be released.
queue.releaseAllPointersExcept(this, eventTime);
} else {
queue.releaseAllPointersOlderThan(this, eventTime);
}
queue.remove(this);
}
onUpEventInternal(x, y, eventTime);
}
// Let this pointer tracker know that one of newer-than-this pointer trackers got an up event.
// This pointer tracker needs to keep the key top graphics "pressed", but needs to get a
// "virtual" up event.
public void onPhantomUpEvent(int x, int y, long eventTime) {
if (DEBUG_EVENT)
printTouchEvent("onPhntEvent:", x, y, eventTime);
onUpEventInternal(x, y, eventTime);
mKeyAlreadyProcessed = true;
}
private void onUpEventInternal(int x, int y, long eventTime) {
mTimerProxy.cancelKeyTimers();
mDrawingProxy.cancelShowKeyPreview(this);
mIsInSlidingKeyInput = false;
final int keyX, keyY;
if (isMajorEnoughMoveToBeOnNewKey(x, y, onMoveKey(x, y))) {
keyX = x;
keyY = y;
} else {
// Use previous fixed key coordinates.
keyX = mKeyX;
keyY = mKeyY;
}
final int keyIndex = onUpKey(keyX, keyY, eventTime);
setReleasedKeyGraphics(keyIndex);
if (mIsShowingMoreKeysPanel) {
mDrawingProxy.dismissMoreKeysPanel();
mIsShowingMoreKeysPanel = false;
}
if (mKeyAlreadyProcessed)
return;
if (!mIsRepeatableKey) {
detectAndSendKey(keyIndex, keyX, keyY);
}
}
public void onShowMoreKeysPanel(int x, int y, long eventTime, KeyEventHandler handler) {
onLongPressed();
onDownEvent(x, y, eventTime, handler);
mIsShowingMoreKeysPanel = true;
}
public void onLongPressed() {
mKeyAlreadyProcessed = true;
setReleasedKeyGraphics(mKeyIndex);
final PointerTrackerQueue queue = sPointerTrackerQueue;
if (queue != null) {
queue.remove(this);
}
}
public void onCancelEvent(int x, int y, long eventTime) {
if (DEBUG_EVENT)
printTouchEvent("onCancelEvt:", x, y, eventTime);
final PointerTrackerQueue queue = sPointerTrackerQueue;
if (queue != null) {
queue.releaseAllPointersExcept(this, eventTime);
queue.remove(this);
}
onCancelEventInternal();
}
private void onCancelEventInternal() {
mTimerProxy.cancelKeyTimers();
mDrawingProxy.cancelShowKeyPreview(this);
setReleasedKeyGraphics(mKeyIndex);
mIsInSlidingKeyInput = false;
if (mIsShowingMoreKeysPanel) {
mDrawingProxy.dismissMoreKeysPanel();
mIsShowingMoreKeysPanel = false;
}
}
private void startRepeatKey(int keyIndex) {
final Key key = getKey(keyIndex);
if (key != null && key.mRepeatable) {
onRepeatKey(keyIndex);
mTimerProxy.startKeyRepeatTimer(sDelayBeforeKeyRepeatStart, keyIndex, this);
mIsRepeatableKey = true;
} else {
mIsRepeatableKey = false;
}
}
public void onRepeatKey(int keyIndex) {
Key key = getKey(keyIndex);
if (key != null) {
detectAndSendKey(keyIndex, key.mX, key.mY);
}
}
private boolean isMajorEnoughMoveToBeOnNewKey(int x, int y, int newKey) {
if (mKeys == null || mKeyDetector == null)
throw new NullPointerException("keyboard and/or key detector not set");
int curKey = mKeyIndex;
if (newKey == curKey) {
return false;
} else if (isValidKeyIndex(curKey)) {
return mKeys.get(curKey).squaredDistanceToEdge(x, y)
>= mKeyDetector.getKeyHysteresisDistanceSquared();
} else {
return true;
}
}
private void startLongPressTimer(int keyIndex) {
Key key = getKey(keyIndex);
if (key == null) return;
if (key.mCode == Keyboard.CODE_SHIFT) {
if (sLongPressShiftKeyTimeout > 0) {
mTimerProxy.startLongPressTimer(sLongPressShiftKeyTimeout, keyIndex, this);
}
} else if (key.mCode == Keyboard.CODE_SPACE) {
if (sLongPressSpaceKeyTimeout > 0) {
mTimerProxy.startLongPressTimer(sLongPressSpaceKeyTimeout, keyIndex, this);
}
} else if (key.hasUppercaseLetter() && mKeyboard.isManualTemporaryUpperCase()) {
// We need not start long press timer on the key which has manual temporary upper case
// code defined and the keyboard is in manual temporary upper case mode.
return;
} else if (sKeyboardSwitcher.isInMomentarySwitchState()) {
// We use longer timeout for sliding finger input started from the symbols mode key.
mTimerProxy.startLongPressTimer(sLongPressKeyTimeout * 3, keyIndex, this);
} else {
mTimerProxy.startLongPressTimer(sLongPressKeyTimeout, keyIndex, this);
}
}
private void detectAndSendKey(int index, int x, int y) {
final Key key = getKey(index);
if (key == null) {
callListenerOnCancelInput();
return;
}
if (key.mOutputText != null) {
callListenerOnTextInput(key);
callListenerOnRelease(key, key.mCode, false);
} else {
int code = key.mCode;
final int[] codes = mKeyDetector.newCodeArray();
mKeyDetector.getKeyIndexAndNearbyCodes(x, y, codes);
// If keyboard is in manual temporary upper case state and key has manual temporary
// uppercase letter as key hint letter, alternate character code should be sent.
if (mKeyboard.isManualTemporaryUpperCase() && key.hasUppercaseLetter()) {
code = key.mHintLabel.charAt(0);
codes[0] = code;
}
// Swap the first and second values in the codes array if the primary code is not the
// first value but the second value in the array. This happens when key debouncing is
// in effect.
if (codes.length >= 2 && codes[0] != code && codes[1] == code) {
codes[1] = codes[0];
codes[0] = code;
}
callListenerOnCodeInput(key, code, codes, x, y);
callListenerOnRelease(key, code, false);
}
}
private long mPreviousEventTime;
private void printTouchEvent(String title, int x, int y, long eventTime) {
final int keyIndex = mKeyDetector.getKeyIndexAndNearbyCodes(x, y, null);
final Key key = getKey(keyIndex);
final String code = (key == null) ? "----" : keyCodePrintable(key.mCode);
final long delta = eventTime - mPreviousEventTime;
Log.d(TAG, String.format("%s%s[%d] %4d %4d %5d %3d(%s)", title,
(mKeyAlreadyProcessed ? "-" : " "), mPointerId, x, y, delta, keyIndex, code));
mPreviousEventTime = eventTime;
}
private static String keyCodePrintable(int primaryCode) {
final String modifier = isModifierCode(primaryCode) ? " modifier" : "";
return String.format((primaryCode < 0) ? "%4d" : "0x%02x", primaryCode) + modifier;
}
}