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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");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of 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,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.inputmethod.keyboard.internal;
     18 
     19 import android.util.SparseIntArray;
     20 
     21 import com.android.inputmethod.keyboard.Key;
     22 import com.android.inputmethod.keyboard.KeyboardId;
     23 import com.android.inputmethod.latin.Constants;
     24 import com.android.inputmethod.latin.utils.CollectionUtils;
     25 
     26 import java.util.ArrayList;
     27 import java.util.TreeSet;
     28 
     29 public class KeyboardParams {
     30     public KeyboardId mId;
     31     public int mThemeId;
     32 
     33     /** Total height and width of the keyboard, including the paddings and keys */
     34     public int mOccupiedHeight;
     35     public int mOccupiedWidth;
     36 
     37     /** Base height and width of the keyboard used to calculate rows' or keys' heights and
     38      *  widths
     39      */
     40     public int mBaseHeight;
     41     public int mBaseWidth;
     42 
     43     public int mTopPadding;
     44     public int mBottomPadding;
     45     public int mLeftPadding;
     46     public int mRightPadding;
     47 
     48     public KeyVisualAttributes mKeyVisualAttributes;
     49 
     50     public int mDefaultRowHeight;
     51     public int mDefaultKeyWidth;
     52     public int mHorizontalGap;
     53     public int mVerticalGap;
     54 
     55     public int mMoreKeysTemplate;
     56     public int mMaxMoreKeysKeyboardColumn;
     57 
     58     public int GRID_WIDTH;
     59     public int GRID_HEIGHT;
     60 
     61     public final TreeSet<Key> mKeys = CollectionUtils.newTreeSet(); // ordered set
     62     public final ArrayList<Key> mShiftKeys = CollectionUtils.newArrayList();
     63     public final ArrayList<Key> mAltCodeKeysWhileTyping = CollectionUtils.newArrayList();
     64     public final KeyboardIconsSet mIconsSet = new KeyboardIconsSet();
     65     public final KeyboardCodesSet mCodesSet = new KeyboardCodesSet();
     66     public final KeyboardTextsSet mTextsSet = new KeyboardTextsSet();
     67     public final KeyStylesSet mKeyStyles = new KeyStylesSet(mTextsSet);
     68 
     69     public KeysCache mKeysCache;
     70 
     71     public int mMostCommonKeyHeight = 0;
     72     public int mMostCommonKeyWidth = 0;
     73 
     74     public boolean mProximityCharsCorrectionEnabled;
     75 
     76     public final TouchPositionCorrection mTouchPositionCorrection =
     77             new TouchPositionCorrection();
     78 
     79     protected void clearKeys() {
     80         mKeys.clear();
     81         mShiftKeys.clear();
     82         clearHistogram();
     83     }
     84 
     85     public void onAddKey(final Key newKey) {
     86         final Key key = (mKeysCache != null) ? mKeysCache.get(newKey) : newKey;
     87         final boolean isSpacer = key.isSpacer();
     88         if (isSpacer && key.getWidth() == 0) {
     89             // Ignore zero width {@link Spacer}.
     90             return;
     91         }
     92         mKeys.add(key);
     93         if (isSpacer) {
     94             return;
     95         }
     96         updateHistogram(key);
     97         if (key.getCode() == Constants.CODE_SHIFT) {
     98             mShiftKeys.add(key);
     99         }
    100         if (key.altCodeWhileTyping()) {
    101             mAltCodeKeysWhileTyping.add(key);
    102         }
    103     }
    104 
    105     private int mMaxHeightCount = 0;
    106     private int mMaxWidthCount = 0;
    107     private final SparseIntArray mHeightHistogram = new SparseIntArray();
    108     private final SparseIntArray mWidthHistogram = new SparseIntArray();
    109 
    110     private void clearHistogram() {
    111         mMostCommonKeyHeight = 0;
    112         mMaxHeightCount = 0;
    113         mHeightHistogram.clear();
    114 
    115         mMaxWidthCount = 0;
    116         mMostCommonKeyWidth = 0;
    117         mWidthHistogram.clear();
    118     }
    119 
    120     private static int updateHistogramCounter(final SparseIntArray histogram, final int key) {
    121         final int index = histogram.indexOfKey(key);
    122         final int count = (index >= 0 ? histogram.get(key) : 0) + 1;
    123         histogram.put(key, count);
    124         return count;
    125     }
    126 
    127     private void updateHistogram(final Key key) {
    128         final int height = key.getHeight() + mVerticalGap;
    129         final int heightCount = updateHistogramCounter(mHeightHistogram, height);
    130         if (heightCount > mMaxHeightCount) {
    131             mMaxHeightCount = heightCount;
    132             mMostCommonKeyHeight = height;
    133         }
    134 
    135         final int width = key.getWidth() + mHorizontalGap;
    136         final int widthCount = updateHistogramCounter(mWidthHistogram, width);
    137         if (widthCount > mMaxWidthCount) {
    138             mMaxWidthCount = widthCount;
    139             mMostCommonKeyWidth = width;
    140         }
    141     }
    142 }
    143