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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 
     17 package com.android.inputmethod.keyboard.internal;
     18 
     19 import com.android.inputmethod.latin.LatinImeLogger;
     20 
     21 public final class TouchPositionCorrection {
     22     private static final int TOUCH_POSITION_CORRECTION_RECORD_SIZE = 3;
     23 
     24     private boolean mEnabled;
     25     private float[] mXs;
     26     private float[] mYs;
     27     private float[] mRadii;
     28 
     29     public void load(final String[] data) {
     30         final int dataLength = data.length;
     31         if (dataLength % TOUCH_POSITION_CORRECTION_RECORD_SIZE != 0) {
     32             if (LatinImeLogger.sDBG) {
     33                 throw new RuntimeException(
     34                         "the size of touch position correction data is invalid");
     35             }
     36             return;
     37         }
     38 
     39         final int length = dataLength / TOUCH_POSITION_CORRECTION_RECORD_SIZE;
     40         mXs = new float[length];
     41         mYs = new float[length];
     42         mRadii = new float[length];
     43         try {
     44             for (int i = 0; i < dataLength; ++i) {
     45                 final int type = i % TOUCH_POSITION_CORRECTION_RECORD_SIZE;
     46                 final int index = i / TOUCH_POSITION_CORRECTION_RECORD_SIZE;
     47                 final float value = Float.parseFloat(data[i]);
     48                 if (type == 0) {
     49                     mXs[index] = value;
     50                 } else if (type == 1) {
     51                     mYs[index] = value;
     52                 } else {
     53                     mRadii[index] = value;
     54                 }
     55             }
     56             mEnabled = dataLength > 0;
     57         } catch (NumberFormatException e) {
     58             if (LatinImeLogger.sDBG) {
     59                 throw new RuntimeException(
     60                         "the number format for touch position correction data is invalid");
     61             }
     62             mEnabled = false;
     63             mXs = null;
     64             mYs = null;
     65             mRadii = null;
     66         }
     67     }
     68 
     69     // For test only
     70     public void setEnabled(final boolean enabled) {
     71         mEnabled = enabled;
     72     }
     73 
     74     public boolean isValid() {
     75         return mEnabled;
     76     }
     77 
     78     public int getRows() {
     79         return mRadii.length;
     80     }
     81 
     82     public float getX(final int row) {
     83         return 0.0f;
     84         // Touch position correction data for X coordinate is obsolete.
     85         // return mXs[row];
     86     }
     87 
     88     public float getY(final int row) {
     89         return mYs[row];
     90     }
     91 
     92     public float getRadius(final int row) {
     93         return mRadii[row];
     94     }
     95 }
     96