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am eb680367: Add keyHysteresisDistance xml attribute 

Merge commit 'eb68036798f53763768e4ab37c7bfab9a2f36025' into gingerbread-plus-aosp

* commit 'eb68036798f53763768e4ab37c7bfab9a2f36025':
  Add keyHysteresisDistance xml attribute
main
Tadashi G. Takaoka 2010-09-14 09:43:48 -07:00 committed by Android Git Automerger
parent 2c42492224 eb68036798
commit b2835ef2e5
8 changed files with 89 additions and 27 deletions
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2
java/res/layout/keyboard_popup.xml
View File

@ -33,5 +33,7 @@
android:background="@drawable/keyboard_dark_background"
latin:keyBackground="@drawable/btn_keyboard_key_gingerbread_popup"
latin:keyHysteresisDistance="0dip"
latin:verticalCorrection="-20dip"
/>
</LinearLayout>

3
java/res/values-land/dimens.xml
View File

@ -22,4 +22,7 @@
<dimen name="key_height">47dip</dimen>
<dimen name="candidate_strip_height">38dip</dimen>
<dimen name="spacebar_vertical_correction">2dip</dimen>
<!-- Amount of allowance for selecting keys in a mini popup keyboard by sliding finger. -->
<!-- key_height * 1.7 -->
<dimen name="mini_keyboard_slide_allowance">79.9dip</dimen>
</resources>

6
java/res/values/attrs.xml
View File

@ -43,12 +43,12 @@
<!-- Height of the key press feedback popup. -->
<attr name="keyPreviewHeight" format="dimension" />
<!-- Hysteresis distance for key debouncing -->
<attr name="keyHysteresisDistance" format="dimension" />
<!-- Amount to offset the touch Y coordinate by, for bias correction. -->
<attr name="verticalCorrection" format="dimension" />
<!-- Amount of allowance for selecting keys in a mini popup keyboard by sliding finger. -->
<attr name="miniKeyboardSlideAllowance" format="dimension" />
<!-- Layout resource for popup keyboards. -->
<attr name="popupLayout" format="reference" />

4
java/res/values/dimens.xml
View File

@ -27,5 +27,7 @@
will not go into extract (fullscreen) mode. -->
<dimen name="max_height_for_fullscreen">2.5in</dimen>
<dimen name="key_text_size">22sp</dimen>
<dimen name="key_debounce_hysteresis_distance">0.05in</dimen>
<!-- Amount of allowance for selecting keys in a mini popup keyboard by sliding finger. -->
<!-- key_height * 1.7 -->
<dimen name="mini_keyboard_slide_allowance">91.8dip</dimen>
</resources>

2
java/res/values/styles.xml
View File

@ -26,8 +26,8 @@
<item name="keyPreviewHeight">80dip</item>
<item name="labelTextSize">14sp</item>
<item name="popupLayout">@layout/keyboard_popup</item>
<item name="keyHysteresisDistance">0.05in</item>
<item name="verticalCorrection">-10dip</item>
<item name="miniKeyboardSlideAllowance">40dip</item>
<item name="shadowColor">#BB000000</item>
<item name="shadowRadius">2.75</item>
<item name="backgroundDimAmount">0.5</item>

25
java/src/com/android/inputmethod/latin/LatinKeyboardBaseView.java
View File

@ -170,6 +170,7 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
private float mShadowRadius;
private Drawable mKeyBackground;
private float mBackgroundDimAmount;
private float mKeyHysteresisDistance;
private float mVerticalCorrection;
private int mPreviewOffset;
private int mPreviewHeight;
@ -200,14 +201,13 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
private int mMiniKeyboardOriginY;
private long mMiniKeyboardPopupTime;
private int[] mWindowOffset;
private float mMiniKeyboardSlideAllowance;
private final float mMiniKeyboardSlideAllowance;
/** Listener for {@link OnKeyboardActionListener}. */
private OnKeyboardActionListener mKeyboardActionListener;
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;
@ -386,12 +386,12 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
case R.styleable.LatinKeyboardBaseView_keyBackground:
mKeyBackground = a.getDrawable(attr);
break;
case R.styleable.LatinKeyboardBaseView_keyHysteresisDistance:
mKeyHysteresisDistance = a.getDimensionPixelOffset(attr, 0);
break;
case R.styleable.LatinKeyboardBaseView_verticalCorrection:
mVerticalCorrection = a.getDimensionPixelOffset(attr, 0);
break;
case R.styleable.LatinKeyboardBaseView_miniKeyboardSlideAllowance:
mMiniKeyboardSlideAllowance = a.getDimensionPixelOffset(attr, 0);
break;
case R.styleable.LatinKeyboardBaseView_keyPreviewLayout:
previewLayout = a.getResourceId(attr, 0);
break;
@ -473,7 +473,7 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
mSwipeThreshold = (int) (500 * res.getDisplayMetrics().density);
// TODO: Refer frameworks/base/core/res/res/values/config.xml
mDisambiguateSwipe = res.getBoolean(R.bool.config_swipeDisambiguation);
mDebounceHysteresis = res.getDimension(R.dimen.key_debounce_hysteresis_distance);
mMiniKeyboardSlideAllowance = res.getDimension(R.dimen.mini_keyboard_slide_allowance);
GestureDetector.SimpleOnGestureListener listener =
new GestureDetector.SimpleOnGestureListener() {
@ -556,7 +556,7 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
mKeys = mKeyDetector.setKeyboard(keyboard, -getPaddingLeft(),
-getPaddingTop() + mVerticalCorrection);
for (PointerTracker tracker : mPointerTrackers) {
tracker.setKeyboard(mKeys, mDebounceHysteresis);
tracker.setKeyboard(mKeys, mKeyHysteresisDistance);
}
requestLayout();
// Hint to reallocate the buffer if the size changed
@ -1025,6 +1025,8 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
mKeyboardActionListener.onRelease(primaryCode);
}
});
// Override default ProximityKeyDetector.
miniKeyboard.mKeyDetector = new MiniKeyboardKeyDetector(mMiniKeyboardSlideAllowance);
Keyboard keyboard;
if (popupKey.popupCharacters != null) {
@ -1120,12 +1122,7 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
private MotionEvent generateMiniKeyboardMotionEvent(int action, int x, int y, long eventTime) {
return MotionEvent.obtain(mMiniKeyboardPopupTime, eventTime, action,
x - mMiniKeyboardOriginX,
// TODO: Currently just taking care of "below" of the keys in a mini popup keyboard
// for key detection by sliding finger. Need to take care of left, right, and
// upper of "edge" keys.
y - mMiniKeyboardOriginY - (int)mMiniKeyboardSlideAllowance,
0);
x - mMiniKeyboardOriginX, y - mMiniKeyboardOriginY, 0);
}
private PointerTracker getPointerTracker(final int id) {
@ -1138,7 +1135,7 @@ public class LatinKeyboardBaseView extends View implements PointerTracker.UIProx
final PointerTracker tracker =
new PointerTracker(i, mHandler, mKeyDetector, this, mHasDistinctMultitouch);
if (keys != null)
tracker.setKeyboard(keys, mDebounceHysteresis);
tracker.setKeyboard(keys, mKeyHysteresisDistance);
if (listener != null)
tracker.setOnKeyboardActionListener(listener);
pointers.add(tracker);

59
java/src/com/android/inputmethod/latin/MiniKeyboardKeyDetector.java Normal file
View File

@ -0,0 +1,59 @@
/*
* Copyright (C) 2010 Google Inc.
*
* 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.latin;
import android.inputmethodservice.Keyboard.Key;
class MiniKeyboardKeyDetector extends KeyDetector {
private static final int MAX_NEARBY_KEYS = 1;
private final int mSlideAllowanceSquare;
private final int mSlideAllowanceSquareTop;
public MiniKeyboardKeyDetector(float slideAllowance) {
super();
mSlideAllowanceSquare = (int)(slideAllowance * slideAllowance);
// Top slide allowance is slightly longer (sqrt(2) times) than other edges.
mSlideAllowanceSquareTop = mSlideAllowanceSquare * 2;
}
@Override
protected int getMaxNearbyKeys() {
return MAX_NEARBY_KEYS;
}
@Override
public int getKeyIndexAndNearbyCodes(int x, int y, int[] allKeys) {
final Key[] keys = getKeys();
final int touchX = getTouchX(x);
final int touchY = getTouchY(y);
int closestKey = LatinKeyboardBaseView.NOT_A_KEY;
int closestKeyDist = (y < 0) ? mSlideAllowanceSquareTop : mSlideAllowanceSquare;
final int keyCount = keys.length;
for (int i = 0; i < keyCount; i++) {
final Key key = keys[i];
int dist = key.squaredDistanceFrom(touchX, touchY);
if (dist < closestKeyDist) {
closestKey = i;
closestKeyDist = dist;
}
}
if (allKeys != null && closestKey != LatinKeyboardBaseView.NOT_A_KEY)
allKeys[0] = closestKey;
return closestKey;
}
}

13
java/src/com/android/inputmethod/latin/PointerTracker.java
View File

@ -55,7 +55,7 @@ public class PointerTracker {
private final boolean mHasDistinctMultitouch;
private Key[] mKeys;
private int mKeyDebounceThresholdSquared = -1;
private int mKeyHysteresisDistanceSquared = -1;
private int mCurrentKey = NOT_A_KEY;
private int mStartX;
@ -106,11 +106,11 @@ public class PointerTracker {
mListener = listener;
}
public void setKeyboard(Key[] keys, float hysteresisPixel) {
if (keys == null || hysteresisPixel < 1.0f)
public void setKeyboard(Key[] keys, float keyHysteresisDistance) {
if (keys == null || keyHysteresisDistance < 0)
throw new IllegalArgumentException();
mKeys = keys;
mKeyDebounceThresholdSquared = (int)(hysteresisPixel * hysteresisPixel);
mKeyHysteresisDistanceSquared = (int)(keyHysteresisDistance * keyHysteresisDistance);
// Update current key index because keyboard layout has been changed.
mCurrentKey = mKeyDetector.getKeyIndexAndNearbyCodes(mStartX, mStartY, null);
}
@ -335,13 +335,12 @@ public class PointerTracker {
}
private boolean isMinorMoveBounce(int x, int y, int newKey, int curKey) {
if (mKeys == null || mKeyDebounceThresholdSquared < 0)
if (mKeys == null || mKeyHysteresisDistanceSquared < 0)
throw new IllegalStateException("keyboard and/or hysteresis not set");
if (newKey == curKey) {
return true;
} else if (isValidKeyIndex(curKey)) {
return getSquareDistanceToKeyEdge(x, y, mKeys[curKey])
< mKeyDebounceThresholdSquared;
return getSquareDistanceToKeyEdge(x, y, mKeys[curKey]) < mKeyHysteresisDistanceSquared;
} else {
return false;
}