/*
* Copyright (c) 2013 Menny Even-Danan
*
* 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.anysoftkeyboard.keyboards.views;
import com.anysoftkeyboard.keyboards.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 closestKeyIndex = AnyKeyboardBaseView.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) {
closestKeyIndex = i;
closestKeyDist = dist;
}
}
if (allKeys != null && closestKeyIndex != AnyKeyboardBaseView.NOT_A_KEY)
allKeys[0] = keys[closestKeyIndex].codes[0];
return closestKeyIndex;
}
}