mirror of
https://gitlab.futo.org/keyboard/latinime.git
synced 2024-09-28 14:54:30 +01:00
86 lines
3.1 KiB
Java
86 lines
3.1 KiB
Java
/*
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* Copyright (C) 2010 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not
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* use this file except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package com.android.inputmethod.latin;
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import android.inputmethodservice.Keyboard.Key;
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import java.util.Arrays;
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class ProximityKeyDetector extends KeyDetector {
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private static final int MAX_NEARBY_KEYS = 12;
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// working area
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private int[] mDistances = new int[MAX_NEARBY_KEYS];
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@Override
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protected int getMaxNearbyKeys() {
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return MAX_NEARBY_KEYS;
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}
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@Override
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public int getKeyIndexAndNearbyCodes(int x, int y, int[] allKeys) {
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final Key[] keys = getKeys();
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final int touchX = getTouchX(x);
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final int touchY = getTouchY(y);
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int primaryIndex = LatinKeyboardBaseView.NOT_A_KEY;
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int closestKey = LatinKeyboardBaseView.NOT_A_KEY;
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int closestKeyDist = mProximityThresholdSquare + 1;
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int[] distances = mDistances;
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Arrays.fill(distances, Integer.MAX_VALUE);
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int [] nearestKeyIndices = mKeyboard.getNearestKeys(touchX, touchY);
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final int keyCount = nearestKeyIndices.length;
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for (int i = 0; i < keyCount; i++) {
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final Key key = keys[nearestKeyIndices[i]];
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int dist = 0;
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boolean isInside = key.isInside(touchX, touchY);
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if (isInside) {
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primaryIndex = nearestKeyIndices[i];
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}
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if (((mProximityCorrectOn
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&& (dist = key.squaredDistanceFrom(touchX, touchY)) < mProximityThresholdSquare)
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|| isInside)
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&& key.codes[0] > 32) {
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// Find insertion point
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final int nCodes = key.codes.length;
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if (dist < closestKeyDist) {
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closestKeyDist = dist;
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closestKey = nearestKeyIndices[i];
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}
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if (allKeys == null) continue;
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for (int j = 0; j < distances.length; j++) {
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if (distances[j] > dist) {
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// Make space for nCodes codes
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System.arraycopy(distances, j, distances, j + nCodes,
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distances.length - j - nCodes);
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System.arraycopy(allKeys, j, allKeys, j + nCodes,
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allKeys.length - j - nCodes);
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System.arraycopy(key.codes, 0, allKeys, j, nCodes);
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Arrays.fill(distances, j, j + nCodes, dist);
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break;
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}
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}
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}
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}
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if (primaryIndex == LatinKeyboardBaseView.NOT_A_KEY) {
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primaryIndex = closestKey;
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}
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return primaryIndex;
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}
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} |