2013bab89c
* Registering alternate code and while key is typing. * Showing press/release graphics of the key that has the above altenate code. * Showing press/release graphics of all shift keys. * Renaming Key.ignoreWhileTyping to Key.altCodeWhileTyping. Bug: 5639503 Change-Id: I67fb45bae76284a1f0deb6fd12ae5fb781d06cc3
581 lines
22 KiB
Java
581 lines
22 KiB
Java
/*
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* Copyright (C) 2010 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.keyboard;
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import android.content.res.Resources;
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import android.content.res.TypedArray;
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import android.graphics.Rect;
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import android.graphics.Typeface;
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import android.graphics.drawable.Drawable;
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import android.text.TextUtils;
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import android.util.Xml;
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import com.android.inputmethod.keyboard.internal.KeyStyles;
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import com.android.inputmethod.keyboard.internal.KeyStyles.KeyStyle;
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import com.android.inputmethod.keyboard.internal.KeyboardBuilder;
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import com.android.inputmethod.keyboard.internal.KeyboardBuilder.ParseException;
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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.keyboard.internal.MoreKeySpecParser;
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import com.android.inputmethod.latin.R;
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import org.xmlpull.v1.XmlPullParser;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* Class for describing the position and characteristics of a single key in the keyboard.
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*/
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public class Key {
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/**
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* The key code (unicode or custom code) that this key generates.
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*/
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public final int mCode;
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public final int mAltCode;
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/** Label to display */
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public final CharSequence mLabel;
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/** Hint label to display on the key in conjunction with the label */
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public final CharSequence mHintLabel;
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/** Flags of the label */
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private final int mLabelFlags;
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private static final int LABEL_FLAGS_ALIGN_LEFT = 0x01;
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private static final int LABEL_FLAGS_ALIGN_RIGHT = 0x02;
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private static final int LABEL_FLAGS_ALIGN_LEFT_OF_CENTER = 0x08;
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private static final int LABEL_FLAGS_LARGE_LETTER = 0x10;
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private static final int LABEL_FLAGS_FONT_NORMAL = 0x20;
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private static final int LABEL_FLAGS_FONT_MONO_SPACE = 0x40;
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private static final int LABEL_FLAGS_FOLLOW_KEY_LETTER_RATIO = 0x80;
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private static final int LABEL_FLAGS_FOLLOW_KEY_HINT_LABEL_RATIO = 0x100;
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private static final int LABEL_FLAGS_HAS_POPUP_HINT = 0x200;
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private static final int LABEL_FLAGS_HAS_UPPERCASE_LETTER = 0x400;
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private static final int LABEL_FLAGS_HAS_HINT_LABEL = 0x800;
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private static final int LABEL_FLAGS_WITH_ICON_LEFT = 0x1000;
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private static final int LABEL_FLAGS_WITH_ICON_RIGHT = 0x2000;
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private static final int LABEL_FLAGS_AUTO_X_SCALE = 0x4000;
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/** Icon to display instead of a label. Icon takes precedence over a label */
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private Drawable mIcon;
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/** Preview version of the icon, for the preview popup */
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private Drawable mPreviewIcon;
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/** Width of the key, not including the gap */
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public final int mWidth;
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/** Height of the key, not including the gap */
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public final int mHeight;
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/** The horizontal gap around this key */
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public final int mHorizontalGap;
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/** The vertical gap below this key */
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public final int mVerticalGap;
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/** The visual insets */
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public final int mVisualInsetsLeft;
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public final int mVisualInsetsRight;
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/** X coordinate of the key in the keyboard layout */
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public final int mX;
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/** Y coordinate of the key in the keyboard layout */
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public final int mY;
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/** Hit bounding box of the key */
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public final Rect mHitBox = new Rect();
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/** Text to output when pressed. This can be multiple characters, like ".com" */
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public final CharSequence mOutputText;
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/** More keys */
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public final CharSequence[] mMoreKeys;
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/** More keys maximum column number */
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public final int mMaxMoreKeysColumn;
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/** Background type that represents different key background visual than normal one. */
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public final int mBackgroundType;
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public static final int BACKGROUND_TYPE_NORMAL = 0;
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public static final int BACKGROUND_TYPE_FUNCTIONAL = 1;
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public static final int BACKGROUND_TYPE_ACTION = 2;
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public static final int BACKGROUND_TYPE_STICKY = 3;
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private final int mActionFlags;
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private static final int ACTION_FLAGS_IS_REPEATABLE = 0x01;
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private static final int ACTION_FLAGS_NO_KEY_PREVIEW = 0x02;
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private static final int ACTION_FLAGS_ALT_CODE_WHILE_TYPING = 0x04;
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/** The current pressed state of this key */
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private boolean mPressed;
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/** If this is a sticky key, is its highlight on? */
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private boolean mHighlightOn;
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/** Key is enabled and responds on press */
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private boolean mEnabled = true;
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/** Whether this key needs to show the "..." popup hint for special purposes */
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private boolean mNeedsSpecialPopupHint;
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// RTL parenthesis character swapping map.
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private static final Map<Integer, Integer> sRtlParenthesisMap = new HashMap<Integer, Integer>();
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static {
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// The all letters need to be mirrored are found at
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// http://www.unicode.org/Public/6.0.0/ucd/extracted/DerivedBinaryProperties.txt
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addRtlParenthesisPair('(', ')');
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addRtlParenthesisPair('[', ']');
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addRtlParenthesisPair('{', '}');
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addRtlParenthesisPair('<', '>');
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// \u00ab: LEFT-POINTING DOUBLE ANGLE QUOTATION MARK
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// \u00bb: RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK
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addRtlParenthesisPair('\u00ab', '\u00bb');
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// \u2039: SINGLE LEFT-POINTING ANGLE QUOTATION MARK
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// \u203a: SINGLE RIGHT-POINTING ANGLE QUOTATION MARK
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addRtlParenthesisPair('\u2039', '\u203a');
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// \u2264: LESS-THAN OR EQUAL TO
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// \u2265: GREATER-THAN OR EQUAL TO
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addRtlParenthesisPair('\u2264', '\u2265');
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}
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private static void addRtlParenthesisPair(int left, int right) {
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sRtlParenthesisMap.put(left, right);
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sRtlParenthesisMap.put(right, left);
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}
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public static int getRtlParenthesisCode(int code, boolean isRtl) {
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if (isRtl && sRtlParenthesisMap.containsKey(code)) {
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return sRtlParenthesisMap.get(code);
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} else {
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return code;
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}
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}
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private static int getCode(Resources res, KeyboardParams params, String moreKeySpec) {
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return getRtlParenthesisCode(
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MoreKeySpecParser.getCode(res, moreKeySpec), params.mIsRtlKeyboard);
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}
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private static Drawable getIcon(KeyboardParams params, String moreKeySpec) {
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return params.mIconsSet.getIcon(MoreKeySpecParser.getIconId(moreKeySpec));
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}
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/**
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* This constructor is being used only for key in more keys keyboard.
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*/
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public Key(Resources res, KeyboardParams params, String moreKeySpec,
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int x, int y, int width, int height) {
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this(params, MoreKeySpecParser.getLabel(moreKeySpec), null, getIcon(params, moreKeySpec),
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getCode(res, params, moreKeySpec), MoreKeySpecParser.getOutputText(moreKeySpec),
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x, y, width, height);
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}
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/**
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* This constructor is being used only for key in popup suggestions pane.
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*/
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public Key(KeyboardParams params, CharSequence label, CharSequence hintLabel, Drawable icon,
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int code, CharSequence outputText, int x, int y, int width, int height) {
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mHeight = height - params.mVerticalGap;
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mHorizontalGap = params.mHorizontalGap;
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mVerticalGap = params.mVerticalGap;
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mVisualInsetsLeft = mVisualInsetsRight = 0;
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mWidth = width - mHorizontalGap;
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mHintLabel = hintLabel;
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mLabelFlags = 0;
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mBackgroundType = BACKGROUND_TYPE_NORMAL;
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mActionFlags = 0;
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mMoreKeys = null;
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mMaxMoreKeysColumn = 0;
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mLabel = label;
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mOutputText = outputText;
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mCode = code;
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mAltCode = Keyboard.CODE_DUMMY;
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mIcon = icon;
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// Horizontal gap is divided equally to both sides of the key.
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mX = x + mHorizontalGap / 2;
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mY = y;
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mHitBox.set(x, y, x + width + 1, y + height);
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}
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/**
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* Create a key with the given top-left coordinate and extract its attributes from the XML
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* parser.
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* @param res resources associated with the caller's context
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* @param params the keyboard building parameters.
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* @param row the row that this key belongs to. row's x-coordinate will be the right edge of
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* this key.
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* @param parser the XML parser containing the attributes for this key
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* @param keyStyles active key styles set
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*/
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public Key(Resources res, KeyboardParams params, KeyboardBuilder.Row row,
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XmlPullParser parser, KeyStyles keyStyles) {
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final float horizontalGap = isSpacer() ? 0 : params.mHorizontalGap;
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final int keyHeight = row.mRowHeight;
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mVerticalGap = params.mVerticalGap;
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mHeight = keyHeight - mVerticalGap;
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final TypedArray keyAttr = res.obtainAttributes(Xml.asAttributeSet(parser),
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R.styleable.Keyboard_Key);
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final KeyStyle style;
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if (keyAttr.hasValue(R.styleable.Keyboard_Key_keyStyle)) {
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String styleName = keyAttr.getString(R.styleable.Keyboard_Key_keyStyle);
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style = keyStyles.getKeyStyle(styleName);
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if (style == null)
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throw new ParseException("Unknown key style: " + styleName, parser);
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} else {
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style = KeyStyles.getEmptyKeyStyle();
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}
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final float keyXPos = row.getKeyX(keyAttr);
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final float keyWidth = row.getKeyWidth(keyAttr, keyXPos);
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final int keyYPos = row.getKeyY();
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// Horizontal gap is divided equally to both sides of the key.
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mX = (int) (keyXPos + horizontalGap / 2);
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mY = keyYPos;
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mWidth = (int) (keyWidth - horizontalGap);
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mHorizontalGap = (int) horizontalGap;
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mHitBox.set((int)keyXPos, keyYPos, (int)(keyXPos + keyWidth) + 1, keyYPos + keyHeight);
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// Update row to have current x coordinate.
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row.setXPos(keyXPos + keyWidth);
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final CharSequence[] moreKeys = style.getTextArray(keyAttr,
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R.styleable.Keyboard_Key_moreKeys);
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// In Arabic symbol layouts, we'd like to keep digits in more keys regardless of
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// config_digit_more_keys_enabled.
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if (params.mId.isAlphabetKeyboard()
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&& !res.getBoolean(R.bool.config_digit_more_keys_enabled)) {
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mMoreKeys = MoreKeySpecParser.filterOut(res, moreKeys, MoreKeySpecParser.DIGIT_FILTER);
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} else {
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mMoreKeys = moreKeys;
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}
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mMaxMoreKeysColumn = style.getInt(keyAttr,
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R.styleable.Keyboard_Key_maxMoreKeysColumn, params.mMaxMiniKeyboardColumn);
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mBackgroundType = style.getInt(keyAttr,
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R.styleable.Keyboard_Key_backgroundType, BACKGROUND_TYPE_NORMAL);
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mActionFlags = style.getFlag(keyAttr, R.styleable.Keyboard_Key_keyActionFlags, 0);
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final KeyboardIconsSet iconsSet = params.mIconsSet;
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mVisualInsetsLeft = (int) KeyboardBuilder.getDimensionOrFraction(keyAttr,
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R.styleable.Keyboard_Key_visualInsetsLeft, params.mBaseWidth, 0);
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mVisualInsetsRight = (int) KeyboardBuilder.getDimensionOrFraction(keyAttr,
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R.styleable.Keyboard_Key_visualInsetsRight, params.mBaseWidth, 0);
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mPreviewIcon = iconsSet.getIcon(style.getInt(keyAttr,
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R.styleable.Keyboard_Key_keyIconPreview, KeyboardIconsSet.ICON_UNDEFINED));
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mIcon = iconsSet.getIcon(style.getInt(keyAttr, R.styleable.Keyboard_Key_keyIcon,
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KeyboardIconsSet.ICON_UNDEFINED));
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final int shiftedIconId = style.getInt(keyAttr, R.styleable.Keyboard_Key_keyIconShifted,
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KeyboardIconsSet.ICON_UNDEFINED);
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if (shiftedIconId != KeyboardIconsSet.ICON_UNDEFINED) {
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final Drawable shiftedIcon = iconsSet.getIcon(shiftedIconId);
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params.addShiftedIcon(this, shiftedIcon);
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}
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mHintLabel = style.getText(keyAttr, R.styleable.Keyboard_Key_keyHintLabel);
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mLabel = style.getText(keyAttr, R.styleable.Keyboard_Key_keyLabel);
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mLabelFlags = style.getFlag(keyAttr, R.styleable.Keyboard_Key_keyLabelFlags, 0);
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mOutputText = style.getText(keyAttr, R.styleable.Keyboard_Key_keyOutputText);
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// Choose the first letter of the label as primary code if not
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// specified.
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final int code = style.getInt(keyAttr, R.styleable.Keyboard_Key_code,
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Keyboard.CODE_UNSPECIFIED);
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if (code == Keyboard.CODE_UNSPECIFIED && !TextUtils.isEmpty(mLabel)) {
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final int firstChar = mLabel.charAt(0);
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mCode = getRtlParenthesisCode(firstChar, params.mIsRtlKeyboard);
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} else if (code != Keyboard.CODE_UNSPECIFIED) {
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mCode = code;
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} else {
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mCode = Keyboard.CODE_DUMMY;
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}
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mAltCode = style.getInt(keyAttr,
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R.styleable.Keyboard_Key_altCode, Keyboard.CODE_DUMMY);
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keyAttr.recycle();
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}
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public void markAsLeftEdge(KeyboardParams params) {
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mHitBox.left = params.mHorizontalEdgesPadding;
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}
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public void markAsRightEdge(KeyboardParams params) {
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mHitBox.right = params.mOccupiedWidth - params.mHorizontalEdgesPadding;
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}
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public void markAsTopEdge(KeyboardParams params) {
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mHitBox.top = params.mTopPadding;
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}
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public void markAsBottomEdge(KeyboardParams params) {
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mHitBox.bottom = params.mOccupiedHeight + params.mBottomPadding;
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}
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public boolean isSticky() {
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return mBackgroundType == BACKGROUND_TYPE_STICKY;
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}
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public boolean isSpacer() {
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return false;
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}
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public boolean isShift() {
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return mCode == Keyboard.CODE_SHIFT;
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}
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public boolean isModifier() {
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return mCode == Keyboard.CODE_SHIFT || mCode == Keyboard.CODE_SWITCH_ALPHA_SYMBOL;
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}
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public boolean isRepeatable() {
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return (mActionFlags & ACTION_FLAGS_IS_REPEATABLE) != 0;
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}
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public boolean noKeyPreview() {
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return (mActionFlags & ACTION_FLAGS_NO_KEY_PREVIEW) != 0;
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}
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public boolean altCodeWhileTyping() {
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return (mActionFlags & ACTION_FLAGS_ALT_CODE_WHILE_TYPING) != 0;
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}
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public Typeface selectTypeface(Typeface defaultTypeface) {
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// TODO: Handle "bold" here too?
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if ((mLabelFlags & LABEL_FLAGS_FONT_NORMAL) != 0) {
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return Typeface.DEFAULT;
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} else if ((mLabelFlags & LABEL_FLAGS_FONT_MONO_SPACE) != 0) {
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return Typeface.MONOSPACE;
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} else {
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return defaultTypeface;
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}
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}
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public int selectTextSize(int letter, int largeLetter, int label, int hintLabel) {
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if (mLabel.length() > 1
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&& (mLabelFlags & (LABEL_FLAGS_FOLLOW_KEY_LETTER_RATIO
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| LABEL_FLAGS_FOLLOW_KEY_HINT_LABEL_RATIO)) == 0) {
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return label;
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} else if ((mLabelFlags & LABEL_FLAGS_FOLLOW_KEY_HINT_LABEL_RATIO) != 0) {
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return hintLabel;
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} else if ((mLabelFlags & LABEL_FLAGS_LARGE_LETTER) != 0) {
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return largeLetter;
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} else {
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return letter;
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}
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}
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public boolean isAlignLeft() {
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return (mLabelFlags & LABEL_FLAGS_ALIGN_LEFT) != 0;
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}
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public boolean isAlignRight() {
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return (mLabelFlags & LABEL_FLAGS_ALIGN_RIGHT) != 0;
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}
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public boolean isAlignLeftOfCenter() {
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return (mLabelFlags & LABEL_FLAGS_ALIGN_LEFT_OF_CENTER) != 0;
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}
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public boolean hasPopupHint() {
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return (mLabelFlags & LABEL_FLAGS_HAS_POPUP_HINT) != 0;
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}
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public void setNeedsSpecialPopupHint(boolean needsSpecialPopupHint) {
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mNeedsSpecialPopupHint = needsSpecialPopupHint;
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}
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public boolean needsSpecialPopupHint() {
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return mNeedsSpecialPopupHint;
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}
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public boolean hasUppercaseLetter() {
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return (mLabelFlags & LABEL_FLAGS_HAS_UPPERCASE_LETTER) != 0;
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}
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public boolean hasHintLabel() {
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return (mLabelFlags & LABEL_FLAGS_HAS_HINT_LABEL) != 0;
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}
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public boolean hasLabelWithIconLeft() {
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return (mLabelFlags & LABEL_FLAGS_WITH_ICON_LEFT) != 0;
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}
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public boolean hasLabelWithIconRight() {
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return (mLabelFlags & LABEL_FLAGS_WITH_ICON_RIGHT) != 0;
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}
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public boolean needsXScale() {
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return (mLabelFlags & LABEL_FLAGS_AUTO_X_SCALE) != 0;
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}
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public Drawable getIcon() {
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return mIcon;
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}
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public Drawable getPreviewIcon() {
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return mPreviewIcon;
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}
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public void setIcon(Drawable icon) {
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mIcon = icon;
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}
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public void setPreviewIcon(Drawable icon) {
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mPreviewIcon = icon;
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}
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/**
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* Informs the key that it has been pressed, in case it needs to change its appearance or
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* state.
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* @see #onReleased()
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*/
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public void onPressed() {
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mPressed = true;
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}
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/**
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* Informs the key that it has been released, in case it needs to change its appearance or
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* state.
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* @see #onPressed()
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*/
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public void onReleased() {
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mPressed = false;
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}
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public void setHighlightOn(boolean highlightOn) {
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mHighlightOn = highlightOn;
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}
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public boolean isEnabled() {
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return mEnabled;
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}
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public void setEnabled(boolean enabled) {
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mEnabled = enabled;
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}
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/**
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* Detects if a point falls on this key.
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* @param x the x-coordinate of the point
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* @param y the y-coordinate of the point
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* @return whether or not the point falls on the key. If the key is attached to an edge, it will
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* assume that all points between the key and the edge are considered to be on the key.
|
|
* @see {@link #markAsLeftEdge(KeyboardParams)} etc.
|
|
*/
|
|
public boolean isOnKey(int x, int y) {
|
|
return mHitBox.contains(x, y);
|
|
}
|
|
|
|
/**
|
|
* Returns the square of the distance to the nearest edge of the key and the given point.
|
|
* @param x the x-coordinate of the point
|
|
* @param y the y-coordinate of the point
|
|
* @return the square of the distance of the point from the nearest edge of the key
|
|
*/
|
|
public int squaredDistanceToEdge(int x, int y) {
|
|
final int left = mX;
|
|
final int right = left + mWidth;
|
|
final int top = mY;
|
|
final int bottom = top + mHeight;
|
|
final int edgeX = x < left ? left : (x > right ? right : x);
|
|
final int edgeY = y < top ? top : (y > bottom ? bottom : y);
|
|
final int dx = x - edgeX;
|
|
final int dy = y - edgeY;
|
|
return dx * dx + dy * dy;
|
|
}
|
|
|
|
private final static int[] KEY_STATE_NORMAL_HIGHLIGHT_ON = {
|
|
android.R.attr.state_checkable,
|
|
android.R.attr.state_checked
|
|
};
|
|
|
|
private final static int[] KEY_STATE_PRESSED_HIGHLIGHT_ON = {
|
|
android.R.attr.state_pressed,
|
|
android.R.attr.state_checkable,
|
|
android.R.attr.state_checked
|
|
};
|
|
|
|
private final static int[] KEY_STATE_NORMAL_HIGHLIGHT_OFF = {
|
|
android.R.attr.state_checkable
|
|
};
|
|
|
|
private final static int[] KEY_STATE_PRESSED_HIGHLIGHT_OFF = {
|
|
android.R.attr.state_pressed,
|
|
android.R.attr.state_checkable
|
|
};
|
|
|
|
private final static int[] KEY_STATE_NORMAL = {
|
|
};
|
|
|
|
private final static int[] KEY_STATE_PRESSED = {
|
|
android.R.attr.state_pressed
|
|
};
|
|
|
|
// functional normal state (with properties)
|
|
private static final int[] KEY_STATE_FUNCTIONAL_NORMAL = {
|
|
android.R.attr.state_single
|
|
};
|
|
|
|
// functional pressed state (with properties)
|
|
private static final int[] KEY_STATE_FUNCTIONAL_PRESSED = {
|
|
android.R.attr.state_single,
|
|
android.R.attr.state_pressed
|
|
};
|
|
|
|
// action normal state (with properties)
|
|
private static final int[] KEY_STATE_ACTIVE_NORMAL = {
|
|
android.R.attr.state_active
|
|
};
|
|
|
|
// action pressed state (with properties)
|
|
private static final int[] KEY_STATE_ACTIVE_PRESSED = {
|
|
android.R.attr.state_active,
|
|
android.R.attr.state_pressed
|
|
};
|
|
|
|
/**
|
|
* Returns the drawable state for the key, based on the current state and type of the key.
|
|
* @return the drawable state of the key.
|
|
* @see android.graphics.drawable.StateListDrawable#setState(int[])
|
|
*/
|
|
public int[] getCurrentDrawableState() {
|
|
final boolean pressed = mPressed;
|
|
|
|
switch (mBackgroundType) {
|
|
case BACKGROUND_TYPE_FUNCTIONAL:
|
|
return pressed ? KEY_STATE_FUNCTIONAL_PRESSED : KEY_STATE_FUNCTIONAL_NORMAL;
|
|
case BACKGROUND_TYPE_ACTION:
|
|
return pressed ? KEY_STATE_ACTIVE_PRESSED : KEY_STATE_ACTIVE_NORMAL;
|
|
case BACKGROUND_TYPE_STICKY:
|
|
if (mHighlightOn) {
|
|
return pressed ? KEY_STATE_PRESSED_HIGHLIGHT_ON : KEY_STATE_NORMAL_HIGHLIGHT_ON;
|
|
} else {
|
|
return pressed ? KEY_STATE_PRESSED_HIGHLIGHT_OFF : KEY_STATE_NORMAL_HIGHLIGHT_OFF;
|
|
}
|
|
default: /* BACKGROUND_TYPE_NORMAL */
|
|
return pressed ? KEY_STATE_PRESSED : KEY_STATE_NORMAL;
|
|
}
|
|
}
|
|
|
|
public static class Spacer extends Key {
|
|
public Spacer(Resources res, KeyboardParams params, KeyboardBuilder.Row row,
|
|
XmlPullParser parser, KeyStyles keyStyles) {
|
|
super(res, params, row, parser, keyStyles);
|
|
}
|
|
|
|
/**
|
|
* This constructor is being used only for divider in more keys keyboard.
|
|
*/
|
|
public Spacer(KeyboardParams params, Drawable icon, int x, int y, int width, int height) {
|
|
super(params, null, null, icon, Keyboard.CODE_DUMMY, null, x, y, width, height);
|
|
}
|
|
|
|
@Override
|
|
public boolean isSpacer() {
|
|
return true;
|
|
}
|
|
}
|
|
}
|