237 lines
9.7 KiB
Java
237 lines
9.7 KiB
Java
/*
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* Copyright (C) 2011 The Android Open Source Project
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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.suggestions;
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import android.content.res.Resources;
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import android.graphics.Paint;
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import android.graphics.drawable.Drawable;
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import com.android.inputmethod.keyboard.Key;
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import com.android.inputmethod.keyboard.Keyboard;
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import com.android.inputmethod.keyboard.KeyboardSwitcher;
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import com.android.inputmethod.keyboard.internal.KeyboardBuilder;
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import com.android.inputmethod.keyboard.internal.KeyboardIconsSet;
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import com.android.inputmethod.keyboard.internal.KeyboardParams;
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import com.android.inputmethod.latin.R;
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import com.android.inputmethod.latin.SuggestedWords;
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import com.android.inputmethod.latin.Utils;
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public final class MoreSuggestions extends Keyboard {
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public static final int SUGGESTION_CODE_BASE = 1024;
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MoreSuggestions(final MoreSuggestionsParam params) {
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super(params);
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}
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private static final class MoreSuggestionsParam extends KeyboardParams {
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private final int[] mWidths = new int[SuggestionStripView.MAX_SUGGESTIONS];
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private final int[] mRowNumbers = new int[SuggestionStripView.MAX_SUGGESTIONS];
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private final int[] mColumnOrders = new int[SuggestionStripView.MAX_SUGGESTIONS];
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private final int[] mNumColumnsInRow = new int[SuggestionStripView.MAX_SUGGESTIONS];
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private static final int MAX_COLUMNS_IN_ROW = 3;
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private int mNumRows;
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public Drawable mDivider;
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public int mDividerWidth;
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public MoreSuggestionsParam() {
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super();
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}
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public int layout(final SuggestedWords suggestions, final int fromPos, final int maxWidth,
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final int minWidth, final int maxRow, final MoreSuggestionsView view) {
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clearKeys();
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final Resources res = view.getContext().getResources();
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mDivider = res.getDrawable(R.drawable.more_suggestions_divider);
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mDividerWidth = mDivider.getIntrinsicWidth();
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final int padding = (int) res.getDimension(
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R.dimen.more_suggestions_key_horizontal_padding);
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final Paint paint = view.newDefaultLabelPaint();
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int row = 0;
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int pos = fromPos, rowStartPos = fromPos;
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final int size = Math.min(suggestions.size(), SuggestionStripView.MAX_SUGGESTIONS);
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while (pos < size) {
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final String word = suggestions.getWord(pos).toString();
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// TODO: Should take care of text x-scaling.
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mWidths[pos] = (int)view.getLabelWidth(word, paint) + padding;
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final int numColumn = pos - rowStartPos + 1;
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final int columnWidth =
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(maxWidth - mDividerWidth * (numColumn - 1)) / numColumn;
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if (numColumn > MAX_COLUMNS_IN_ROW
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|| !fitInWidth(rowStartPos, pos + 1, columnWidth)) {
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if ((row + 1) >= maxRow) {
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break;
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}
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mNumColumnsInRow[row] = pos - rowStartPos;
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rowStartPos = pos;
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row++;
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}
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mColumnOrders[pos] = pos - rowStartPos;
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mRowNumbers[pos] = row;
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pos++;
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}
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mNumColumnsInRow[row] = pos - rowStartPos;
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mNumRows = row + 1;
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mBaseWidth = mOccupiedWidth = Math.max(
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minWidth, calcurateMaxRowWidth(fromPos, pos));
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mBaseHeight = mOccupiedHeight = mNumRows * mDefaultRowHeight + mVerticalGap;
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return pos - fromPos;
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}
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private boolean fitInWidth(final int startPos, final int endPos, final int width) {
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for (int pos = startPos; pos < endPos; pos++) {
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if (mWidths[pos] > width)
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return false;
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}
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return true;
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}
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private int calcurateMaxRowWidth(final int startPos, final int endPos) {
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int maxRowWidth = 0;
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int pos = startPos;
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for (int row = 0; row < mNumRows; row++) {
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final int numColumnInRow = mNumColumnsInRow[row];
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int maxKeyWidth = 0;
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while (pos < endPos && mRowNumbers[pos] == row) {
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maxKeyWidth = Math.max(maxKeyWidth, mWidths[pos]);
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pos++;
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}
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maxRowWidth = Math.max(maxRowWidth,
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maxKeyWidth * numColumnInRow + mDividerWidth * (numColumnInRow - 1));
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}
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return maxRowWidth;
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}
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private static final int[][] COLUMN_ORDER_TO_NUMBER = {
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{ 0, },
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{ 1, 0, },
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{ 2, 0, 1},
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};
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public int getNumColumnInRow(final int pos) {
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return mNumColumnsInRow[mRowNumbers[pos]];
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}
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public int getColumnNumber(final int pos) {
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final int columnOrder = mColumnOrders[pos];
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final int numColumn = getNumColumnInRow(pos);
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return COLUMN_ORDER_TO_NUMBER[numColumn - 1][columnOrder];
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}
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public int getX(final int pos) {
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final int columnNumber = getColumnNumber(pos);
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return columnNumber * (getWidth(pos) + mDividerWidth);
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}
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public int getY(final int pos) {
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final int row = mRowNumbers[pos];
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return (mNumRows -1 - row) * mDefaultRowHeight + mTopPadding;
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}
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public int getWidth(final int pos) {
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final int numColumnInRow = getNumColumnInRow(pos);
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return (mOccupiedWidth - mDividerWidth * (numColumnInRow - 1)) / numColumnInRow;
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}
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public void markAsEdgeKey(final Key key, final int pos) {
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final int row = mRowNumbers[pos];
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if (row == 0)
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key.markAsBottomEdge(this);
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if (row == mNumRows - 1)
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key.markAsTopEdge(this);
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final int numColumnInRow = mNumColumnsInRow[row];
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final int column = getColumnNumber(pos);
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if (column == 0)
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key.markAsLeftEdge(this);
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if (column == numColumnInRow - 1)
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key.markAsRightEdge(this);
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}
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}
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public static final class Builder extends KeyboardBuilder<MoreSuggestionsParam> {
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private final MoreSuggestionsView mPaneView;
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private SuggestedWords mSuggestions;
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private int mFromPos;
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private int mToPos;
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public Builder(final MoreSuggestionsView paneView) {
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super(paneView.getContext(), new MoreSuggestionsParam());
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mPaneView = paneView;
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}
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public Builder layout(final SuggestedWords suggestions, final int fromPos,
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final int maxWidth, final int minWidth, final int maxRow) {
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final Keyboard keyboard = KeyboardSwitcher.getInstance().getKeyboard();
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final int xmlId = R.xml.kbd_suggestions_pane_template;
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load(xmlId, keyboard.mId);
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mParams.mVerticalGap = mParams.mTopPadding = keyboard.mVerticalGap / 2;
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final int count = mParams.layout(suggestions, fromPos, maxWidth, minWidth, maxRow,
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mPaneView);
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mFromPos = fromPos;
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mToPos = fromPos + count;
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mSuggestions = suggestions;
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return this;
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}
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@Override
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public MoreSuggestions build() {
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final MoreSuggestionsParam params = mParams;
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for (int pos = mFromPos; pos < mToPos; pos++) {
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final int x = params.getX(pos);
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final int y = params.getY(pos);
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final int width = params.getWidth(pos);
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final String word = mSuggestions.getWord(pos).toString();
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final String info = Utils.getDebugInfo(mSuggestions, pos);
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final int index = pos + SUGGESTION_CODE_BASE;
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final Key key = new Key(
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params, word, info, KeyboardIconsSet.ICON_UNDEFINED, index, null, x, y,
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width, params.mDefaultRowHeight, 0);
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params.markAsEdgeKey(key, pos);
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params.onAddKey(key);
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final int columnNumber = params.getColumnNumber(pos);
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final int numColumnInRow = params.getNumColumnInRow(pos);
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if (columnNumber < numColumnInRow - 1) {
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final Divider divider = new Divider(params, params.mDivider, x + width, y,
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params.mDividerWidth, params.mDefaultRowHeight);
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params.onAddKey(divider);
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}
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}
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return new MoreSuggestions(params);
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}
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}
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private static final class Divider extends Key.Spacer {
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private final Drawable mIcon;
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public Divider(final KeyboardParams params, final Drawable icon, final int x,
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final int y, final int width, final int height) {
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super(params, x, y, width, height);
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mIcon = icon;
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}
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@Override
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public Drawable getIcon(final KeyboardIconsSet iconSet, final int alpha) {
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// KeyboardIconsSet and alpha are unused. Use the icon that has been passed to the
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// constructor.
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// TODO: Drawable itself should have an alpha value.
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mIcon.setAlpha(128);
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return mIcon;
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}
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}
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}
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