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Support multi-touch only when device has distinct multi-touch panel

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Bug: 2973373
Change-Id: I9871c09ec8c1c2aa945d97392e61ee1ec585baef
This commit is contained in:
Tadashi G. Takaoka 2010-09-06 14:26:46 +09:00
parent a8d9702fc4
commit c8b9afe037
4 changed files with 90 additions and 9 deletions
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4
java/src/com/android/inputmethod/latin/KeyboardSwitcher.java
View file

@ -365,6 +365,10 @@ public class KeyboardSwitcher implements SharedPreferences.OnSharedPreferenceCha
}
}
public boolean hasDistinctMultitouch() {
return mInputView != null && mInputView.hasDistinctMultitouch();
}
/**
* Updates state machine to figure out when to automatically switch back to alpha mode.
* Returns true if the keyboard needs to switch back

10
java/src/com/android/inputmethod/latin/LatinIME.java
View file

@ -1135,7 +1135,9 @@ public class LatinIME extends InputMethodService
LatinImeLogger.logOnDelete();
break;
case Keyboard.KEYCODE_SHIFT:
// Shift key is handled in onPress().
// Shift key is handled in onPress() when device has distinct multi-touch panel.
if (!mKeyboardSwitcher.hasDistinctMultitouch())
handleShift();
break;
case Keyboard.KEYCODE_CANCEL:
if (!isShowingOptionDialog()) {
@ -1935,7 +1937,7 @@ public class LatinIME extends InputMethodService
List<CharSequence> suggestions = mWordToSuggestions.get(selectedWord);
// If the first letter of touching is capitalized, make all the suggestions
// start with a capital letter.
if (Character.isUpperCase((char) touching.word.charAt(0))) {
if (Character.isUpperCase(touching.word.charAt(0))) {
for (int i = 0; i < suggestions.size(); i++) {
String origSugg = (String) suggestions.get(i);
String capsSugg = origSugg.toUpperCase().charAt(0)
@ -2196,7 +2198,7 @@ public class LatinIME extends InputMethodService
public void onPress(int primaryCode) {
vibrate();
playKeyClick(primaryCode);
if (primaryCode == Keyboard.KEYCODE_SHIFT) {
if (mKeyboardSwitcher.hasDistinctMultitouch() && primaryCode == Keyboard.KEYCODE_SHIFT) {
mShiftKeyState.onPress();
handleShift();
} else if (primaryCode == Keyboard.KEYCODE_MODE_CHANGE) {
@ -2210,7 +2212,7 @@ public class LatinIME extends InputMethodService
// Reset any drag flags in the keyboard
((LatinKeyboard) mKeyboardSwitcher.getInputView().getKeyboard()).keyReleased();
//vibrate();
if (primaryCode == Keyboard.KEYCODE_SHIFT) {
if (mKeyboardSwitcher.hasDistinctMultitouch() && primaryCode == Keyboard.KEYCODE_SHIFT) {
if (mShiftKeyState.isMomentary())
resetShift();
mShiftKeyState.onRelease();

51
java/src/com/android/inputmethod/latin/LatinKeyboardBaseView.java
View file

@ -17,6 +17,7 @@
package com.android.inputmethod.latin;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
@ -204,6 +205,8 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
private final ArrayList<PointerTracker> mPointerTrackers = new ArrayList<PointerTracker>();
private final PointerQueue mPointerQueue = new PointerQueue();
private final float mDebounceHysteresis;
private final boolean mHasDistinctMultitouch;
private int mOldPointerCount = 1;
protected KeyDetector mKeyDetector = new ProximityKeyDetector();
@ -508,6 +511,9 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
final boolean ignoreMultitouch = true;
mGestureDetector = new GestureDetector(getContext(), listener, null, ignoreMultitouch);
mGestureDetector.setIsLongpressEnabled(false);
mHasDistinctMultitouch = context.getPackageManager()
.hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH_DISTINCT);
}
public void setOnKeyboardActionListener(OnKeyboardActionListener listener) {
@ -563,6 +569,14 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
return mKeyboard;
}
/**
* Return whether the device has distinct multi-touch panel.
* @return true if the device has distinct multi-touch panel.
*/
public boolean hasDistinctMultitouch() {
return mHasDistinctMultitouch;
}
/**
* Sets the state of the shift key of the keyboard, if any.
* @param shifted whether or not to enable the state of the shift key
@ -1090,7 +1104,7 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
// Create pointer trackers until we can get 'id+1'-th tracker, if needed.
for (int i = pointers.size(); i <= id; i++) {
final PointerTracker tracker =
new PointerTracker(i, mHandler, mKeyDetector, this);
new PointerTracker(i, mHandler, mKeyDetector, this, mHasDistinctMultitouch);
if (keys != null)
tracker.setKeyboard(keys, mDebounceHysteresis);
if (listener != null)
@ -1107,6 +1121,13 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
final int action = me.getActionMasked();
final long eventTime = me.getEventTime();
// TODO: cleanup this code into a multi-touch to single-touch event converter class?
// If the device does not have distinct multi-touch support panel, ignore all multi-touch
// events except a transition from/to single-touch.
if (!mHasDistinctMultitouch && pointerCount > 1 && mOldPointerCount > 1) {
return true;
}
// Track the last few movements to look for spurious swipes.
mSwipeTracker.addMovement(me);
@ -1138,6 +1159,34 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
// Up event will pass through.
}
// TODO: cleanup this code into a multi-touch to single-touch event converter class?
// Translate mutli-touch event to single-touch events on the device that has no distinct
// multi-touch panel.
if (!mHasDistinctMultitouch) {
// Use only main (id=0) pointer tracker.
PointerTracker tracker = getPointerTracker(0);
int index = me.getActionIndex();
int x = (int)me.getX(index);
int y = (int)me.getY(index);
int oldPointerCount = mOldPointerCount;
if (pointerCount == 1 && oldPointerCount == 2) {
// Multi-touch to single touch transition.
// Send a down event for the latest pointer.
tracker.onDownEvent(x, y, eventTime);
} else if (pointerCount == 2 && oldPointerCount == 1) {
// Single-touch to multi-touch transition.
// Send an up event for the last pointer.
tracker.onUpEvent(tracker.getLastX(), tracker.getLastY(), eventTime);
} else if (pointerCount == 1 && oldPointerCount == 1) {
tracker.onTouchEvent(action, x, y, eventTime);
} else {
Log.w(TAG, "Unknown touch panel behavior: pointer count is " + pointerCount
+ " (old " + oldPointerCount + ")");
}
mOldPointerCount = pointerCount;
return true;
}
if (action == MotionEvent.ACTION_MOVE) {
for (int index = 0; index < pointerCount; index++) {
int x = (int)me.getX(index);

34
java/src/com/android/inputmethod/latin/PointerTracker.java
View file

@ -22,12 +22,13 @@ import com.android.inputmethod.latin.LatinKeyboardBaseView.UIHandler;
import android.inputmethodservice.Keyboard;
import android.inputmethodservice.Keyboard.Key;
import android.util.Log;
import android.view.MotionEvent;
import android.view.ViewConfiguration;
public class PointerTracker {
private static final String TAG = "PointerTracker";
private static final boolean DEBUG = false;
private static final boolean DEBUG_MOVE = DEBUG && true;
private static final boolean DEBUG_MOVE = false;
public interface UIProxy {
public void invalidateKey(Key key);
@ -51,6 +52,7 @@ public class PointerTracker {
private final UIHandler mHandler;
private final KeyDetector mKeyDetector;
private OnKeyboardActionListener mListener;
private final boolean mHasDistinctMultitouch;
private Key[] mKeys;
private int mKeyDebounceThresholdSquared = -1;
@ -85,13 +87,15 @@ public class PointerTracker {
// pressed key
private int mPreviousKey = NOT_A_KEY;
public PointerTracker(int id, UIHandler handler, KeyDetector keyDetector, UIProxy proxy) {
public PointerTracker(int id, UIHandler handler, KeyDetector keyDetector, UIProxy proxy,
boolean hasDistinctMultitouch) {
if (proxy == null || handler == null || keyDetector == null)
throw new NullPointerException();
mPointerId = id;
mProxy = proxy;
mHandler = handler;
mKeyDetector = keyDetector;
mHasDistinctMultitouch = hasDistinctMultitouch;
resetMultiTap();
}
@ -146,6 +150,25 @@ public class PointerTracker {
mKeyAlreadyProcessed = true;
}
public void onTouchEvent(int action, int x, int y, long eventTime) {
switch (action) {
case MotionEvent.ACTION_MOVE:
onMoveEvent(x, y, eventTime);
break;
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_POINTER_DOWN:
onDownEvent(x, y, eventTime);
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_POINTER_UP:
onUpEvent(x, y, eventTime);
break;
case MotionEvent.ACTION_CANCEL:
onCancelEvent(x, y, eventTime);
break;
}
}
public void onDownEvent(int x, int y, long eventTime) {
int keyIndex = mKeyDetector.getKeyIndexAndNearbyCodes(x, y, null);
mCurrentKey = keyIndex;
@ -242,7 +265,7 @@ public class PointerTracker {
showKeyPreviewAndUpdateKey(NOT_A_KEY);
// If we're not on a repeating key (which sends on a DOWN event)
if (!wasInKeyRepeat) {
detectAndSendKey(mCurrentKey, (int)x, (int)y, eventTime);
detectAndSendKey(mCurrentKey, x, y, eventTime);
}
if (isValidKeyIndex(keyIndex))
mProxy.invalidateKey(mKeys[keyIndex]);
@ -355,7 +378,10 @@ public class PointerTracker {
private void showKeyPreviewAndUpdateKey(int keyIndex) {
updateKey(keyIndex);
if (!isModifier())
// The modifier key, such as shift key, should not be shown as preview when multi-touch is
// supported. On thge other hand, if multi-touch is not supported, the modifier key should
// be shown as preview.
if (!isModifier() || !mHasDistinctMultitouch)
mProxy.showPreview(keyIndex, this);
}