/ime/latinime/src/com/googlecode/eyesfree/inputmethod/latin/MiniKeyboardKeyDetector.java
http://eyes-free.googlecode.com/ · Java · 59 lines · 36 code · 7 blank · 16 comment · 6 complexity · 681f06da6a59d0d4f95d37f260d939f7 MD5 · raw file
- /*
- * 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.googlecode.eyesfree.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 closestKeyIndex = 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) {
- closestKeyIndex = i;
- closestKeyDist = dist;
- }
- }
- if (allKeys != null && closestKeyIndex != LatinKeyboardBaseView.NOT_A_KEY)
- allKeys[0] = keys[closestKeyIndex].codes[0];
- return closestKeyIndex;
- }
- }