78 lines
2.9 KiB
Java
78 lines
2.9 KiB
Java
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/*
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* Copyright (C) 2011 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.keyboard;
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public class ProximityInfo {
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public static final int MAX_PROXIMITY_CHARS_SIZE = 16;
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private final int mDisplayWidth;
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private final int mDisplayHeight;
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private final int mGridWidth;
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private final int mGridHeight;
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private final int mGridSize;
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ProximityInfo(int displayWidth, int displayHeight, int gridWidth, int gridHeight) {
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mDisplayWidth = displayWidth;
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mDisplayHeight = displayHeight;
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mGridWidth = gridWidth;
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mGridHeight = gridHeight;
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mGridSize = mGridWidth * mGridHeight;
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}
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private int mNativeProximityInfo;
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private native int setProximityInfoNative(int maxProximityCharsSize, int displayWidth,
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int displayHeight, int gridWidth, int gridHeight, int[] proximityCharsArray);
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private native void releaseProximityInfoNative(int nativeProximityInfo);
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public final void setProximityInfo(int[][] gridNeighbors) {
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int[] proximityCharsArray = new int[mGridSize * MAX_PROXIMITY_CHARS_SIZE];
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for (int i = 0; i < mGridSize; ++i) {
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final int proximityCharsLength = gridNeighbors[i].length;
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for (int j = 0; j < MAX_PROXIMITY_CHARS_SIZE; ++j) {
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int charCode = KeyDetector.NOT_A_KEY;
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if (j < proximityCharsLength) {
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charCode = gridNeighbors[i][j];
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}
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proximityCharsArray[i * MAX_PROXIMITY_CHARS_SIZE + j] = charCode;
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}
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}
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mNativeProximityInfo = setProximityInfoNative(MAX_PROXIMITY_CHARS_SIZE,
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mDisplayWidth, mDisplayHeight, mGridWidth, mGridHeight, proximityCharsArray);
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}
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// TODO: Get rid of this function's input (keyboard).
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public int getNativeProximityInfo(Keyboard keyboard) {
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if (mNativeProximityInfo == 0) {
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// TODO: Move this function to ProximityInfo and make this private.
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keyboard.computeNearestNeighbors();
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}
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return mNativeProximityInfo;
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}
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@Override
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protected void finalize() throws Throwable {
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try {
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if (mNativeProximityInfo != 0) {
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releaseProximityInfoNative(mNativeProximityInfo);
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mNativeProximityInfo = 0;
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}
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} finally {
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super.finalize();
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}
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}
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}
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