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Diffstat (limited to 'java/src/com/android/inputmethod/keyboard/internal/MiniKeyboardBuilder.java')
-rw-r--r--java/src/com/android/inputmethod/keyboard/internal/MiniKeyboardBuilder.java250
1 files changed, 0 insertions, 250 deletions
diff --git a/java/src/com/android/inputmethod/keyboard/internal/MiniKeyboardBuilder.java b/java/src/com/android/inputmethod/keyboard/internal/MiniKeyboardBuilder.java
deleted file mode 100644
index 1e67eec70..000000000
--- a/java/src/com/android/inputmethod/keyboard/internal/MiniKeyboardBuilder.java
+++ /dev/null
@@ -1,250 +0,0 @@
-/*
- * Copyright (C) 2010 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.content.Context;
-import android.content.res.Resources;
-import android.graphics.Paint;
-import android.graphics.Rect;
-
-import com.android.inputmethod.keyboard.Key;
-import com.android.inputmethod.keyboard.Keyboard;
-import com.android.inputmethod.keyboard.KeyboardView;
-import com.android.inputmethod.keyboard.MiniKeyboard;
-import com.android.inputmethod.latin.R;
-
-import java.util.List;
-
-public class MiniKeyboardBuilder {
- private final Resources mRes;
- private final MiniKeyboard mKeyboard;
- private final CharSequence[] mPopupCharacters;
- private final MiniKeyboardLayoutParams mParams;
-
- /* package */ static class MiniKeyboardLayoutParams {
- public final int mKeyWidth;
- public final int mRowHeight;
- /* package */ final int mTopRowAdjustment;
- public final int mNumRows;
- public final int mNumColumns;
- public final int mLeftKeys;
- public final int mRightKeys; // includes default key.
-
- /**
- * The object holding mini keyboard layout parameters.
- *
- * @param numKeys number of keys in this mini keyboard.
- * @param maxColumns number of maximum columns of this mini keyboard.
- * @param keyWidth mini keyboard key width in pixel, including horizontal gap.
- * @param rowHeight mini keyboard row height in pixel, including vertical gap.
- * @param coordXInParent coordinate x of the popup key in parent keyboard.
- * @param parentKeyboardWidth parent keyboard width in pixel.
- */
- public MiniKeyboardLayoutParams(int numKeys, int maxColumns, int keyWidth, int rowHeight,
- int coordXInParent, int parentKeyboardWidth) {
- if (parentKeyboardWidth / keyWidth < maxColumns)
- throw new IllegalArgumentException("Keyboard is too small to hold mini keyboard: "
- + parentKeyboardWidth + " " + keyWidth + " " + maxColumns);
- mKeyWidth = keyWidth;
- mRowHeight = rowHeight;
-
- final int numRows = (numKeys + maxColumns - 1) / maxColumns;
- mNumRows = numRows;
- final int numColumns = getOptimizedColumns(numKeys, maxColumns);
- mNumColumns = numColumns;
-
- final int numLeftKeys = (numColumns - 1) / 2;
- final int numRightKeys = numColumns - numLeftKeys; // including default key.
- final int maxLeftKeys = coordXInParent / keyWidth;
- final int maxRightKeys = Math.max(1, (parentKeyboardWidth - coordXInParent) / keyWidth);
- int leftKeys, rightKeys;
- if (numLeftKeys > maxLeftKeys) {
- leftKeys = maxLeftKeys;
- rightKeys = numColumns - maxLeftKeys;
- } else if (numRightKeys > maxRightKeys) {
- leftKeys = numColumns - maxRightKeys;
- rightKeys = maxRightKeys;
- } else {
- leftKeys = numLeftKeys;
- rightKeys = numRightKeys;
- }
- // Shift right if the left edge of mini keyboard is on the edge of parent keyboard
- // unless the parent key is on the left edge.
- if (leftKeys * keyWidth >= coordXInParent && leftKeys > 0) {
- leftKeys--;
- rightKeys++;
- }
- // Shift left if the right edge of mini keyboard is on the edge of parent keyboard
- // unless the parent key is on the right edge.
- if (rightKeys * keyWidth + coordXInParent >= parentKeyboardWidth && rightKeys > 1) {
- leftKeys++;
- rightKeys--;
- }
- mLeftKeys = leftKeys;
- mRightKeys = rightKeys;
-
- // Centering of the top row.
- final boolean onEdge = (leftKeys == 0 || rightKeys == 1);
- if (numRows < 2 || onEdge || getTopRowEmptySlots(numKeys, numColumns) % 2 == 0) {
- mTopRowAdjustment = 0;
- } else if (mLeftKeys < mRightKeys - 1) {
- mTopRowAdjustment = 1;
- } else {
- mTopRowAdjustment = -1;
- }
- }
-
- // Return key position according to column count (0 is default).
- /* package */ int getColumnPos(int n) {
- final int col = n % mNumColumns;
- if (col == 0) {
- // default position.
- return 0;
- }
- int pos = 0;
- int right = 1; // include default position key.
- int left = 0;
- int i = 0;
- while (true) {
- // Assign right key if available.
- if (right < mRightKeys) {
- pos = right;
- right++;
- i++;
- }
- if (i >= col)
- break;
- // Assign left key if available.
- if (left < mLeftKeys) {
- left++;
- pos = -left;
- i++;
- }
- if (i >= col)
- break;
- }
- return pos;
- }
-
- private static int getTopRowEmptySlots(int numKeys, int numColumns) {
- final int remainingKeys = numKeys % numColumns;
- if (remainingKeys == 0) {
- return 0;
- } else {
- return numColumns - remainingKeys;
- }
- }
-
- private int getOptimizedColumns(int numKeys, int maxColumns) {
- int numColumns = Math.min(numKeys, maxColumns);
- while (getTopRowEmptySlots(numKeys, numColumns) >= mNumRows) {
- numColumns--;
- }
- return numColumns;
- }
-
- public int getDefaultKeyCoordX() {
- return mLeftKeys * mKeyWidth;
- }
-
- public int getX(int n, int row) {
- final int x = getColumnPos(n) * mKeyWidth + getDefaultKeyCoordX();
- if (isTopRow(row)) {
- return x + mTopRowAdjustment * (mKeyWidth / 2);
- }
- return x;
- }
-
- public int getY(int row) {
- return (mNumRows - 1 - row) * mRowHeight;
- }
-
- public int getRowFlags(int row) {
- int rowFlags = 0;
- if (row == 0) rowFlags |= Keyboard.EDGE_TOP;
- if (isTopRow(row)) rowFlags |= Keyboard.EDGE_BOTTOM;
- return rowFlags;
- }
-
- private boolean isTopRow(int rowCount) {
- return rowCount == mNumRows - 1;
- }
- }
-
- public MiniKeyboardBuilder(KeyboardView view, int layoutTemplateResId, Key parentKey,
- Keyboard parentKeyboard) {
- final Context context = view.getContext();
- mRes = context.getResources();
- final MiniKeyboard keyboard = new MiniKeyboard(
- context, layoutTemplateResId, parentKeyboard);
- mKeyboard = keyboard;
- mPopupCharacters = parentKey.mPopupCharacters;
-
- final int keyWidth = getMaxKeyWidth(view, mPopupCharacters, keyboard.getKeyWidth());
- final MiniKeyboardLayoutParams params = new MiniKeyboardLayoutParams(
- mPopupCharacters.length, parentKey.mMaxPopupColumn,
- keyWidth, parentKeyboard.getRowHeight(),
- parentKey.mX + (parentKey.mWidth + parentKey.mGap) / 2 - keyWidth / 2,
- view.getMeasuredWidth());
- mParams = params;
-
- keyboard.setRowHeight(params.mRowHeight);
- keyboard.setHeight(params.mNumRows * params.mRowHeight);
- keyboard.setMinWidth(params.mNumColumns * params.mKeyWidth);
- keyboard.setDefaultCoordX(params.getDefaultKeyCoordX() + params.mKeyWidth / 2);
- }
-
- private static int getMaxKeyWidth(KeyboardView view, CharSequence[] popupCharacters,
- int minKeyWidth) {
- Paint paint = null;
- Rect bounds = null;
- int maxWidth = 0;
- for (CharSequence popupSpec : popupCharacters) {
- final CharSequence label = PopupCharactersParser.getLabel(popupSpec.toString());
- // If the label is single letter, minKeyWidth is enough to hold the label.
- if (label != null && label.length() > 1) {
- if (paint == null) {
- paint = new Paint();
- paint.setAntiAlias(true);
- }
- final int labelSize = view.getDefaultLabelSizeAndSetPaint(paint);
- paint.setTextSize(labelSize);
- if (bounds == null) bounds = new Rect();
- paint.getTextBounds(label.toString(), 0, label.length(), bounds);
- if (maxWidth < bounds.width())
- maxWidth = bounds.width();
- }
- }
- final int horizontalPadding = (int)view.getContext().getResources().getDimension(
- R.dimen.mini_keyboard_key_horizontal_padding);
- return Math.max(minKeyWidth, maxWidth + horizontalPadding);
- }
-
- public MiniKeyboard build() {
- final MiniKeyboard keyboard = mKeyboard;
- final List<Key> keys = keyboard.getKeys();
- final MiniKeyboardLayoutParams params = mParams;
- for (int n = 0; n < mPopupCharacters.length; n++) {
- final CharSequence label = mPopupCharacters[n];
- final int row = n / params.mNumColumns;
- final Key key = new Key(mRes, keyboard, label, params.getX(n, row), params.getY(row),
- params.mKeyWidth, params.mRowHeight, params.getRowFlags(row));
- keys.add(key);
- }
- return keyboard;
- }
-}
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