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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.android.inputmethod.keyboard.internal;
import android.util.SparseIntArray;
import com.android.inputmethod.keyboard.Key;
import com.android.inputmethod.keyboard.KeyboardId;
import com.android.inputmethod.latin.common.Constants;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.SortedSet;
import java.util.TreeSet;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
public class KeyboardParams {
public KeyboardId mId;
public int mThemeId;
/** Total height and width of the keyboard, including the paddings and keys */
public int mOccupiedHeight;
public int mOccupiedWidth;
/** Base height and width of the keyboard used to calculate rows' or keys' heights and
* widths
*/
public int mBaseHeight;
public int mBaseWidth;
public int mTopPadding;
public int mBottomPadding;
public int mLeftPadding;
public int mRightPadding;
@Nullable
public KeyVisualAttributes mKeyVisualAttributes;
public int mDefaultRowHeight;
public int mDefaultKeyWidth;
public int mHorizontalGap;
public int mVerticalGap;
public int mMoreKeysTemplate;
public int mMaxMoreKeysKeyboardColumn;
public int GRID_WIDTH;
public int GRID_HEIGHT;
// Keys are sorted from top-left to bottom-right order.
@Nonnull
public final SortedSet<Key> mSortedKeys = new TreeSet<>(ROW_COLUMN_COMPARATOR);
@Nonnull
public final ArrayList<Key> mShiftKeys = new ArrayList<>();
@Nonnull
public final ArrayList<Key> mAltCodeKeysWhileTyping = new ArrayList<>();
@Nonnull
public final KeyboardIconsSet mIconsSet = new KeyboardIconsSet();
@Nonnull
public final KeyboardTextsSet mTextsSet = new KeyboardTextsSet();
@Nonnull
public final KeyStylesSet mKeyStyles = new KeyStylesSet(mTextsSet);
@Nonnull
private final UniqueKeysCache mUniqueKeysCache;
public boolean mAllowRedundantMoreKeys;
public int mMostCommonKeyHeight = 0;
public int mMostCommonKeyWidth = 0;
public boolean mProximityCharsCorrectionEnabled;
@Nonnull
public final TouchPositionCorrection mTouchPositionCorrection =
new TouchPositionCorrection();
// Comparator to sort {@link Key}s from top-left to bottom-right order.
private static final Comparator<Key> ROW_COLUMN_COMPARATOR = new Comparator<Key>() {
@Override
public int compare(final Key lhs, final Key rhs) {
if (lhs.getY() < rhs.getY()) return -1;
if (lhs.getY() > rhs.getY()) return 1;
if (lhs.getX() < rhs.getX()) return -1;
if (lhs.getX() > rhs.getX()) return 1;
return 0;
}
};
public KeyboardParams() {
this(UniqueKeysCache.NO_CACHE);
}
public KeyboardParams(@Nonnull final UniqueKeysCache keysCache) {
mUniqueKeysCache = keysCache;
}
protected void clearKeys() {
mSortedKeys.clear();
mShiftKeys.clear();
clearHistogram();
}
public void onAddKey(@Nonnull final Key newKey) {
final Key key = mUniqueKeysCache.getUniqueKey(newKey);
final boolean isSpacer = key.isSpacer();
if (isSpacer && key.getWidth() == 0) {
// Ignore zero width {@link Spacer}.
return;
}
mSortedKeys.add(key);
if (isSpacer) {
return;
}
updateHistogram(key);
if (key.getCode() == Constants.CODE_SHIFT) {
mShiftKeys.add(key);
}
if (key.altCodeWhileTyping()) {
mAltCodeKeysWhileTyping.add(key);
}
}
public void removeRedundantMoreKeys() {
if (mAllowRedundantMoreKeys) {
return;
}
final MoreKeySpec.LettersOnBaseLayout lettersOnBaseLayout =
new MoreKeySpec.LettersOnBaseLayout();
for (final Key key : mSortedKeys) {
lettersOnBaseLayout.addLetter(key);
}
final ArrayList<Key> allKeys = new ArrayList<>(mSortedKeys);
mSortedKeys.clear();
for (final Key key : allKeys) {
final Key filteredKey = Key.removeRedundantMoreKeys(key, lettersOnBaseLayout);
mSortedKeys.add(mUniqueKeysCache.getUniqueKey(filteredKey));
}
}
private int mMaxHeightCount = 0;
private int mMaxWidthCount = 0;
private final SparseIntArray mHeightHistogram = new SparseIntArray();
private final SparseIntArray mWidthHistogram = new SparseIntArray();
private void clearHistogram() {
mMostCommonKeyHeight = 0;
mMaxHeightCount = 0;
mHeightHistogram.clear();
mMaxWidthCount = 0;
mMostCommonKeyWidth = 0;
mWidthHistogram.clear();
}
private static int updateHistogramCounter(final SparseIntArray histogram, final int key) {
final int index = histogram.indexOfKey(key);
final int count = (index >= 0 ? histogram.get(key) : 0) + 1;
histogram.put(key, count);
return count;
}
private void updateHistogram(final Key key) {
final int height = key.getHeight() + mVerticalGap;
final int heightCount = updateHistogramCounter(mHeightHistogram, height);
if (heightCount > mMaxHeightCount) {
mMaxHeightCount = heightCount;
mMostCommonKeyHeight = height;
}
final int width = key.getWidth() + mHorizontalGap;
final int widthCount = updateHistogramCounter(mWidthHistogram, width);
if (widthCount > mMaxWidthCount) {
mMaxWidthCount = widthCount;
mMostCommonKeyWidth = width;
}
}
}
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