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am 513f1b04: Merge "Add hack to translate sudden move to up/down events" into honeycomb 

* commit '513f1b0454f5ea774a0fd1daa200daa62085c114':
  Add hack to translate sudden move to up/down events
main
Tadashi G. Takaoka 2011-01-27 23:41:03 -08:00 committed by Android Git Automerger
parent 109c4e5920 513f1b0454
commit 294d1c08f4
3 changed files with 40 additions and 20 deletions
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10
java/src/com/android/inputmethod/keyboard/LatinKeyboardView.java
View File

@ -16,6 +16,7 @@
package com.android.inputmethod.keyboard;
import com.android.inputmethod.latin.LatinImeLogger;
import com.android.inputmethod.latin.Utils;
import com.android.inputmethod.voice.VoiceIMEConnector;
@ -23,10 +24,13 @@ import android.content.Context;
import android.graphics.Canvas;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
// TODO: We should remove this class
public class LatinKeyboardView extends KeyboardView {
private static final String TAG = LatinKeyboardView.class.getSimpleName();
private static boolean DEBUG_MODE = LatinImeLogger.sDBG;
/** Whether we've started dropping move events because we found a big jump */
private boolean mDroppingEvents;
@ -208,7 +212,11 @@ public class LatinKeyboardView extends KeyboardView {
if (keyboard == null) return true;
// If there was a sudden jump, return without processing the actual motion event.
if (handleSuddenJump(me)) return true;
if (handleSuddenJump(me)) {
if (DEBUG_MODE)
Log.w(TAG, "onTouchEvent: ignore sudden jump " + me);
return true;
}
// Reset any bounding box controls in the keyboard
if (me.getAction() == MotionEvent.ACTION_DOWN) {

35
java/src/com/android/inputmethod/keyboard/PointerTracker.java
View File

@ -17,6 +17,7 @@
package com.android.inputmethod.keyboard;
import com.android.inputmethod.keyboard.KeyboardView.UIHandler;
import com.android.inputmethod.latin.LatinImeLogger;
import com.android.inputmethod.latin.R;
import android.content.res.Resources;
@ -31,6 +32,7 @@ public class PointerTracker {
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 UIProxy {
public void invalidateKey(Key key);
@ -62,6 +64,7 @@ public class PointerTracker {
private Keyboard mKeyboard;
private Key[] mKeys;
private int mKeyHysteresisDistanceSquared = -1;
private int mKeyQuarterWidthSquared;
private final PointerTrackerKeyState mKeyState;
@ -166,6 +169,8 @@ public class PointerTracker {
mKeyboard = keyboard;
mKeys = keys;
mKeyHysteresisDistanceSquared = (int)(keyHysteresisDistance * keyHysteresisDistance);
final int keyQuarterWidth = keyboard.getKeyWidth() / 4;
mKeyQuarterWidthSquared = keyQuarterWidth * keyQuarterWidth;
// Mark that keyboard layout has been changed.
mKeyboardLayoutHasBeenChanged = true;
}
@ -268,10 +273,6 @@ public class PointerTracker {
if (DEBUG_EVENT)
printTouchEvent("onDownEvent:", x, y, eventTime);
// TODO: up-to-down filter, if (down-up) is less than threshold, removeMessage(UP, this) in
// Handler, and just ignore this down event.
// TODO: down-to-up filter, just record down time. do not enqueue pointer now.
// Naive up-to-down noise filter.
final long deltaT = eventTime - mKeyState.getUpTime();
if (deltaT < mTouchNoiseThresholdMillis) {
@ -279,6 +280,7 @@ public class PointerTracker {
final int dy = y - mKeyState.getLastY();
final int distanceSquared = (dx * dx + dy * dy);
if (distanceSquared < mTouchNoiseThresholdDistanceSquared) {
if (DEBUG_MODE)
Log.w(TAG, "onDownEvent: ignore potential noise: time=" + deltaT
+ " distance=" + distanceSquared);
setAlreadyProcessed();
@ -333,9 +335,8 @@ public class PointerTracker {
return;
final PointerTrackerKeyState keyState = mKeyState;
// TODO: down-to-up filter, if (eventTime-downTime) is less than threshold, just ignore
// this move event. Otherwise fire {@link onDownEventInternal} and continue.
final int lastX = keyState.getLastX();
final int lastY = keyState.getLastY();
int keyIndex = keyState.onMoveKey(x, y);
final Key oldKey = getKey(keyState.getKeyIndex());
if (isValidKeyIndex(keyIndex)) {
@ -364,9 +365,23 @@ public class PointerTracker {
keyIndex = keyState.onMoveKey(x, y);
keyState.onMoveToNewKey(keyIndex, x, y);
startLongPressTimer(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 {
setAlreadyProcessed();
showKeyPreviewAndUpdateKeyGraphics(NOT_A_KEY);
}
return;
}
}
@ -389,17 +404,11 @@ public class PointerTracker {
showKeyPreviewAndUpdateKeyGraphics(mKeyState.getKeyIndex());
}
// TODO: up-to-down filter, if delayed UP message is fired, invoke {@link onUpEventInternal}.
public void onUpEvent(int x, int y, long eventTime, PointerTrackerQueue queue) {
if (ENABLE_ASSERTION) checkAssertion(queue);
if (DEBUG_EVENT)
printTouchEvent("onUpEvent :", x, y, eventTime);
// TODO: up-to-down filter, just sendDelayedMessage(UP, this) to Handler.
// TODO: down-to-up filter, if (eventTime-downTime) is less than threshold, just ignore
// this up event. Otherwise fire {@link onDownEventInternal} and {@link onUpEventInternal}.
if (queue != null) {
if (isModifier()) {
// Before processing an up event of modifier key, all pointers already being

3
java/src/com/android/inputmethod/latin/Utils.java
View File

@ -128,8 +128,11 @@ public class Utils {
+ ", " + maxEditDistanceOfNativeDictionary);
}
if (distance > maxEditDistanceOfNativeDictionary) {
if (DBG) {
Log.d(TAG, "Safety net: before = " + typedWord + ", after = " + candidateWord);
Log.w(TAG, "(Error) The edit distance of this correction exceeds limit. "
+ "Turning off auto-correction.");
}
return true;
} else {
return false;