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Add key debounce. bug: 2517112 

Change-Id: I461e481226395ce8964003c2ad1f4af888c6f7f9
main
Ken Wakasa 2010-07-01 09:14:24 +09:00
parent 9d2e059f83
commit 59d271ee76
1 changed files with 14 additions and 1 deletions
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15
java/src/com/android/inputmethod/latin/LatinKeyboardBaseView.java
View File

@ -182,6 +182,8 @@ public class LatinKeyboardBaseView extends View implements View.OnClickListener
private int mVerticalCorrection; private int mVerticalCorrection;
private int mProximityThreshold; private int mProximityThreshold;
private int mKeyDebounceThreshold;
private static final int KEY_DEBOUNCE_FACTOR = 6;
private boolean mPreviewCentered = false; private boolean mPreviewCentered = false;
private boolean mShowPreview = true; private boolean mShowPreview = true;
@ -633,6 +635,9 @@ public class LatinKeyboardBaseView extends View implements View.OnClickListener
if (dimensionSum < 0 || length == 0) return; if (dimensionSum < 0 || length == 0) return;
mProximityThreshold = (int) (dimensionSum * 1.4f / length); mProximityThreshold = (int) (dimensionSum * 1.4f / length);
mProximityThreshold *= mProximityThreshold; // Square it mProximityThreshold *= mProximityThreshold; // Square it
// 1/KEY_DEBOUNCE_FACTOR of distance between adjacent keys
mKeyDebounceThreshold = mProximityThreshold / KEY_DEBOUNCE_FACTOR;
} }
@Override @Override
@ -1158,6 +1163,13 @@ public class LatinKeyboardBaseView extends View implements View.OnClickListener
return result; return result;
} }
private boolean isMinorMoveForKeyDebounce(int x, int y) {
// TODO: Check the coordinate against each key border. The current
// logic is pretty simple.
return ((x - mLastCodeX) * (x - mLastCodeX) +
(y - mLastCodeY) * (y - mLastCodeY)) < mKeyDebounceThreshold;
}
private boolean onModifiedTouchEvent(MotionEvent me, boolean possiblePoly) { private boolean onModifiedTouchEvent(MotionEvent me, boolean possiblePoly) {
int touchX = (int) me.getX() - getPaddingLeft(); int touchX = (int) me.getX() - getPaddingLeft();
int touchY = (int) me.getY() + mVerticalCorrection - getPaddingTop(); int touchY = (int) me.getY() + mVerticalCorrection - getPaddingTop();
@ -1231,7 +1243,8 @@ public class LatinKeyboardBaseView extends View implements View.OnClickListener
mCurrentKey = keyIndex; mCurrentKey = keyIndex;
mCurrentKeyTime = eventTime - mDownTime; mCurrentKeyTime = eventTime - mDownTime;
} else { } else {
if (keyIndex == mCurrentKey) { if (keyIndex == mCurrentKey
|| isMinorMoveForKeyDebounce(touchX, touchY)) {
mCurrentKeyTime += eventTime - mLastMoveTime; mCurrentKeyTime += eventTime - mLastMoveTime;
continueLongPress = true; continueLongPress = true;
} else if (mRepeatKeyIndex == NOT_A_KEY) { } else if (mRepeatKeyIndex == NOT_A_KEY) {