/* * 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; import android.content.res.Resources; import android.content.res.TypedArray; import android.graphics.Rect; import android.graphics.Typeface; import android.graphics.drawable.Drawable; import android.text.TextUtils; import android.util.Log; import android.util.Xml; import com.android.inputmethod.keyboard.internal.KeySpecParser; import com.android.inputmethod.keyboard.internal.KeyStyles; import com.android.inputmethod.keyboard.internal.KeyStyles.KeyStyle; import com.android.inputmethod.keyboard.internal.KeyboardIconsSet; import com.android.inputmethod.latin.R; import com.android.inputmethod.latin.StringUtils; import com.android.inputmethod.latin.XmlParseUtils; import org.xmlpull.v1.XmlPullParser; import org.xmlpull.v1.XmlPullParserException; import java.util.Arrays; /** * Class for describing the position and characteristics of a single key in the keyboard. */ public class Key { private static final String TAG = Key.class.getSimpleName(); /** * The key code (unicode or custom code) that this key generates. */ public final int mCode; public final int mAltCode; /** Label to display */ public final String mLabel; /** Hint label to display on the key in conjunction with the label */ public final String mHintLabel; /** Flags of the label */ private final int mLabelFlags; private static final int LABEL_FLAGS_ALIGN_LEFT = 0x01; private static final int LABEL_FLAGS_ALIGN_RIGHT = 0x02; private static final int LABEL_FLAGS_ALIGN_LEFT_OF_CENTER = 0x08; private static final int LABEL_FLAGS_LARGE_LETTER = 0x10; private static final int LABEL_FLAGS_FONT_NORMAL = 0x20; private static final int LABEL_FLAGS_FONT_MONO_SPACE = 0x40; public static final int LABEL_FLAGS_FOLLOW_KEY_LETTER_RATIO = 0x80; private static final int LABEL_FLAGS_FOLLOW_KEY_HINT_LABEL_RATIO = 0x100; private static final int LABEL_FLAGS_HAS_POPUP_HINT = 0x200; private static final int LABEL_FLAGS_HAS_SHIFTED_LETTER_HINT = 0x400; private static final int LABEL_FLAGS_HAS_HINT_LABEL = 0x800; private static final int LABEL_FLAGS_WITH_ICON_LEFT = 0x1000; private static final int LABEL_FLAGS_WITH_ICON_RIGHT = 0x2000; private static final int LABEL_FLAGS_AUTO_X_SCALE = 0x4000; private static final int LABEL_FLAGS_PRESERVE_CASE = 0x8000; private static final int LABEL_FLAGS_SHIFTED_LETTER_ACTIVATED = 0x10000; private static final int LABEL_FLAGS_FROM_CUSTOM_ACTION_LABEL = 0x20000; private static final int LABEL_FLAGS_DISABLE_HINT_LABEL = 0x40000000; private static final int LABEL_FLAGS_DISABLE_ADDITIONAL_MORE_KEYS = 0x80000000; /** Icon to display instead of a label. Icon takes precedence over a label */ private final int mIconId; /** Icon for disabled state */ private final int mDisabledIconId; /** Preview version of the icon, for the preview popup */ private final int mPreviewIconId; /** Width of the key, not including the gap */ public final int mWidth; /** Height of the key, not including the gap */ public final int mHeight; /** The horizontal gap around this key */ public final int mHorizontalGap; /** The vertical gap below this key */ public final int mVerticalGap; /** The visual insets */ public final int mVisualInsetsLeft; public final int mVisualInsetsRight; /** X coordinate of the key in the keyboard layout */ public final int mX; /** Y coordinate of the key in the keyboard layout */ public final int mY; /** Hit bounding box of the key */ public final Rect mHitBox = new Rect(); /** Text to output when pressed. This can be multiple characters, like ".com" */ public final CharSequence mOutputText; /** More keys */ public final String[] mMoreKeys; /** More keys column number and flags */ private final int mMoreKeysColumnAndFlags; private static final int MORE_KEYS_COLUMN_MASK = 0x000000ff; private static final int MORE_KEYS_FLAGS_FIXED_COLUMN_ORDER = 0x80000000; private static final int MORE_KEYS_FLAGS_HAS_LABELS = 0x40000000; private static final int MORE_KEYS_FLAGS_NEEDS_DIVIDERS = 0x20000000; private static final int MORE_KEYS_FLAGS_EMBEDDED_MORE_KEY = 0x10000000; private static final String MORE_KEYS_AUTO_COLUMN_ORDER = "!autoColumnOrder!"; private static final String MORE_KEYS_FIXED_COLUMN_ORDER = "!fixedColumnOrder!"; private static final String MORE_KEYS_HAS_LABELS = "!hasLabels!"; private static final String MORE_KEYS_NEEDS_DIVIDERS = "!needsDividers!"; private static final String MORE_KEYS_EMBEDDED_MORE_KEY = "!embeddedMoreKey!"; /** Background type that represents different key background visual than normal one. */ public final int mBackgroundType; public static final int BACKGROUND_TYPE_NORMAL = 0; public static final int BACKGROUND_TYPE_FUNCTIONAL = 1; public static final int BACKGROUND_TYPE_ACTION = 2; public static final int BACKGROUND_TYPE_STICKY_OFF = 3; public static final int BACKGROUND_TYPE_STICKY_ON = 4; private final int mActionFlags; private static final int ACTION_FLAGS_IS_REPEATABLE = 0x01; private static final int ACTION_FLAGS_NO_KEY_PREVIEW = 0x02; private static final int ACTION_FLAGS_ALT_CODE_WHILE_TYPING = 0x04; private static final int ACTION_FLAGS_ENABLE_LONG_PRESS = 0x08; private final int mHashCode; /** The current pressed state of this key */ private boolean mPressed; /** Key is enabled and responds on press */ private boolean mEnabled = true; /** * This constructor is being used only for key in more keys keyboard. */ public Key(Resources res, Keyboard.Params params, String moreKeySpec, int x, int y, int width, int height, int labelFlags) { this(params, KeySpecParser.getLabel(moreKeySpec), null, KeySpecParser.getIconId(moreKeySpec), KeySpecParser.getCode(res, moreKeySpec), KeySpecParser.getOutputText(moreKeySpec), x, y, width, height, labelFlags); } /** * This constructor is being used only for key in popup suggestions pane. */ public Key(Keyboard.Params params, String label, String hintLabel, int iconId, int code, String outputText, int x, int y, int width, int height, int labelFlags) { mHeight = height - params.mVerticalGap; mHorizontalGap = params.mHorizontalGap; mVerticalGap = params.mVerticalGap; mVisualInsetsLeft = mVisualInsetsRight = 0; mWidth = width - mHorizontalGap; mHintLabel = hintLabel; mLabelFlags = labelFlags; mBackgroundType = BACKGROUND_TYPE_NORMAL; mActionFlags = 0; mMoreKeys = null; mMoreKeysColumnAndFlags = 0; mLabel = label; mOutputText = outputText; mCode = code; mEnabled = (code != Keyboard.CODE_UNSPECIFIED); mAltCode = Keyboard.CODE_UNSPECIFIED; mIconId = iconId; mDisabledIconId = KeyboardIconsSet.ICON_UNDEFINED; mPreviewIconId = KeyboardIconsSet.ICON_UNDEFINED; // Horizontal gap is divided equally to both sides of the key. mX = x + mHorizontalGap / 2; mY = y; mHitBox.set(x, y, x + width + 1, y + height); mHashCode = computeHashCode(this); } /** * Create a key with the given top-left coordinate and extract its attributes from the XML * parser. * @param res resources associated with the caller's context * @param params the keyboard building parameters. * @param row the row that this key belongs to. row's x-coordinate will be the right edge of * this key. * @param parser the XML parser containing the attributes for this key * @param keyStyles active key styles set * @throws XmlPullParserException */ public Key(Resources res, Keyboard.Params params, Keyboard.Builder.Row row, XmlPullParser parser, KeyStyles keyStyles) throws XmlPullParserException { final float horizontalGap = isSpacer() ? 0 : params.mHorizontalGap; final int keyHeight = row.mRowHeight; mVerticalGap = params.mVerticalGap; mHeight = keyHeight - mVerticalGap; final TypedArray keyAttr = res.obtainAttributes(Xml.asAttributeSet(parser), R.styleable.Keyboard_Key); final KeyStyle style; if (keyAttr.hasValue(R.styleable.Keyboard_Key_keyStyle)) { String styleName = keyAttr.getString(R.styleable.Keyboard_Key_keyStyle); style = keyStyles.getKeyStyle(styleName); if (style == null) throw new XmlParseUtils.ParseException( "Unknown key style: " + styleName, parser); } else { style = KeyStyles.getEmptyKeyStyle(); } final float keyXPos = row.getKeyX(keyAttr); final float keyWidth = row.getKeyWidth(keyAttr, keyXPos); final int keyYPos = row.getKeyY(); // Horizontal gap is divided equally to both sides of the key. mX = (int) (keyXPos + horizontalGap / 2); mY = keyYPos; mWidth = (int) (keyWidth - horizontalGap); mHorizontalGap = (int) horizontalGap; mHitBox.set((int)keyXPos, keyYPos, (int)(keyXPos + keyWidth) + 1, keyYPos + keyHeight); // Update row to have current x coordinate. row.setXPos(keyXPos + keyWidth); mBackgroundType = style.getInt(keyAttr, R.styleable.Keyboard_Key_backgroundType, BACKGROUND_TYPE_NORMAL); mVisualInsetsLeft = (int) Keyboard.Builder.getDimensionOrFraction(keyAttr, R.styleable.Keyboard_Key_visualInsetsLeft, params.mBaseWidth, 0); mVisualInsetsRight = (int) Keyboard.Builder.getDimensionOrFraction(keyAttr, R.styleable.Keyboard_Key_visualInsetsRight, params.mBaseWidth, 0); mPreviewIconId = style.getInt(keyAttr, R.styleable.Keyboard_Key_keyIconPreview, KeyboardIconsSet.ICON_UNDEFINED); mIconId = style.getInt(keyAttr, R.styleable.Keyboard_Key_keyIcon, KeyboardIconsSet.ICON_UNDEFINED); mDisabledIconId = style.getInt(keyAttr, R.styleable.Keyboard_Key_keyIconDisabled, KeyboardIconsSet.ICON_UNDEFINED); mLabelFlags = style.getFlag(keyAttr, R.styleable.Keyboard_Key_keyLabelFlags) | row.getDefaultKeyLabelFlags(); final boolean preserveCase = (mLabelFlags & LABEL_FLAGS_PRESERVE_CASE) != 0; int actionFlags = style.getFlag(keyAttr, R.styleable.Keyboard_Key_keyActionFlags); String[] moreKeys = style.getStringArray(keyAttr, R.styleable.Keyboard_Key_moreKeys); int moreKeysColumn = style.getInt(keyAttr, R.styleable.Keyboard_Key_maxMoreKeysColumn, params.mMaxMoreKeysKeyboardColumn); int value; if ((value = KeySpecParser.getIntValue(moreKeys, MORE_KEYS_AUTO_COLUMN_ORDER, -1)) > 0) { moreKeysColumn = value & MORE_KEYS_COLUMN_MASK; } if ((value = KeySpecParser.getIntValue(moreKeys, MORE_KEYS_FIXED_COLUMN_ORDER, -1)) > 0) { moreKeysColumn = MORE_KEYS_FLAGS_FIXED_COLUMN_ORDER | (value & MORE_KEYS_COLUMN_MASK); } if (KeySpecParser.getBooleanValue(moreKeys, MORE_KEYS_HAS_LABELS)) { moreKeysColumn |= MORE_KEYS_FLAGS_HAS_LABELS; } if (KeySpecParser.getBooleanValue(moreKeys, MORE_KEYS_NEEDS_DIVIDERS)) { moreKeysColumn |= MORE_KEYS_FLAGS_NEEDS_DIVIDERS; } if (KeySpecParser.getBooleanValue(moreKeys, MORE_KEYS_EMBEDDED_MORE_KEY)) { moreKeysColumn |= MORE_KEYS_FLAGS_EMBEDDED_MORE_KEY; } mMoreKeysColumnAndFlags = moreKeysColumn; final String[] additionalMoreKeys; if ((mLabelFlags & LABEL_FLAGS_DISABLE_ADDITIONAL_MORE_KEYS) != 0) { additionalMoreKeys = null; } else { additionalMoreKeys = style.getStringArray( keyAttr, R.styleable.Keyboard_Key_additionalMoreKeys); } moreKeys = KeySpecParser.insertAddtionalMoreKeys(moreKeys, additionalMoreKeys); if (moreKeys != null) { actionFlags |= ACTION_FLAGS_ENABLE_LONG_PRESS; for (int i = 0; i < moreKeys.length; i++) { moreKeys[i] = adjustCaseOfStringForKeyboardId( moreKeys[i], preserveCase, params.mId); } } mActionFlags = actionFlags; mMoreKeys = moreKeys; if ((mLabelFlags & LABEL_FLAGS_FROM_CUSTOM_ACTION_LABEL) != 0) { mLabel = params.mId.mCustomActionLabel; } else { mLabel = adjustCaseOfStringForKeyboardId(style.getString( keyAttr, R.styleable.Keyboard_Key_keyLabel), preserveCase, params.mId); } if ((mLabelFlags & LABEL_FLAGS_DISABLE_HINT_LABEL) != 0) { mHintLabel = null; } else { mHintLabel = adjustCaseOfStringForKeyboardId(style.getString( keyAttr, R.styleable.Keyboard_Key_keyHintLabel), preserveCase, params.mId); } String outputText = adjustCaseOfStringForKeyboardId(style.getString( keyAttr, R.styleable.Keyboard_Key_keyOutputText), preserveCase, params.mId); final int code = style.getInt( keyAttr, R.styleable.Keyboard_Key_code, Keyboard.CODE_UNSPECIFIED); // Choose the first letter of the label as primary code if not specified. if (code == Keyboard.CODE_UNSPECIFIED && TextUtils.isEmpty(outputText) && !TextUtils.isEmpty(mLabel)) { if (StringUtils.codePointCount(mLabel) == 1) { // Use the first letter of the hint label if shiftedLetterActivated flag is // specified. if (hasShiftedLetterHint() && isShiftedLetterActivated() && !TextUtils.isEmpty(mHintLabel)) { mCode = mHintLabel.codePointAt(0); } else { mCode = mLabel.codePointAt(0); } } else { // In some locale and case, the character might be represented by multiple code // points, such as upper case Eszett of German alphabet. outputText = mLabel; mCode = Keyboard.CODE_OUTPUT_TEXT; } } else if (code == Keyboard.CODE_UNSPECIFIED && outputText != null) { if (StringUtils.codePointCount(outputText) == 1) { mCode = outputText.codePointAt(0); outputText = null; } else { mCode = Keyboard.CODE_OUTPUT_TEXT; } } else { mCode = adjustCaseOfCodeForKeyboardId(code, preserveCase, params.mId); } mOutputText = outputText; mAltCode = adjustCaseOfCodeForKeyboardId(style.getInt(keyAttr, R.styleable.Keyboard_Key_altCode, Keyboard.CODE_UNSPECIFIED), preserveCase, params.mId); mHashCode = computeHashCode(this); keyAttr.recycle(); if (hasShiftedLetterHint() && TextUtils.isEmpty(mHintLabel)) { Log.w(TAG, "hasShiftedLetterHint specified without keyHintLabel: " + this); } } private static int adjustCaseOfCodeForKeyboardId(int code, boolean preserveCase, KeyboardId id) { if (!Keyboard.isLetterCode(code) || preserveCase) return code; final String text = new String(new int[] { code } , 0, 1); final String casedText = adjustCaseOfStringForKeyboardId(text, preserveCase, id); return StringUtils.codePointCount(casedText) == 1 ? casedText.codePointAt(0) : Keyboard.CODE_UNSPECIFIED; } private static String adjustCaseOfStringForKeyboardId(String text, boolean preserveCase, KeyboardId id) { if (text == null || preserveCase) return text; switch (id.mElementId) { case KeyboardId.ELEMENT_ALPHABET_MANUAL_SHIFTED: case KeyboardId.ELEMENT_ALPHABET_AUTOMATIC_SHIFTED: case KeyboardId.ELEMENT_ALPHABET_SHIFT_LOCKED: case KeyboardId.ELEMENT_ALPHABET_SHIFT_LOCK_SHIFTED: return text.toUpperCase(id.mLocale); default: return text; } } private static int computeHashCode(Key key) { return Arrays.hashCode(new Object[] { key.mX, key.mY, key.mWidth, key.mHeight, key.mCode, key.mLabel, key.mHintLabel, key.mIconId, key.mBackgroundType, Arrays.hashCode(key.mMoreKeys), key.mOutputText, key.mActionFlags, key.mLabelFlags, // Key can be distinguishable without the following members. // key.mAltCode, // key.mDisabledIconId, // key.mPreviewIconId, // key.mHorizontalGap, // key.mVerticalGap, // key.mVisualInsetLeft, // key.mVisualInsetRight, // key.mMaxMoreKeysColumn, }); } private boolean equals(Key o) { if (this == o) return true; return o.mX == mX && o.mY == mY && o.mWidth == mWidth && o.mHeight == mHeight && o.mCode == mCode && TextUtils.equals(o.mLabel, mLabel) && TextUtils.equals(o.mHintLabel, mHintLabel) && o.mIconId == mIconId && o.mBackgroundType == mBackgroundType && Arrays.equals(o.mMoreKeys, mMoreKeys) && TextUtils.equals(o.mOutputText, mOutputText) && o.mActionFlags == mActionFlags && o.mLabelFlags == mLabelFlags; } @Override public int hashCode() { return mHashCode; } @Override public boolean equals(Object o) { return o instanceof Key && equals((Key)o); } @Override public String toString() { return String.format("%s/%s %d,%d %dx%d %s/%s/%s", Keyboard.printableCode(mCode), mLabel, mX, mY, mWidth, mHeight, mHintLabel, KeyboardIconsSet.getIconName(mIconId), backgroundName(mBackgroundType)); } private static String backgroundName(int backgroundType) { switch (backgroundType) { case BACKGROUND_TYPE_NORMAL: return "normal"; case BACKGROUND_TYPE_FUNCTIONAL: return "functional"; case BACKGROUND_TYPE_ACTION: return "action"; case BACKGROUND_TYPE_STICKY_OFF: return "stickyOff"; case BACKGROUND_TYPE_STICKY_ON: return "stickyOn"; default: return null; } } public void markAsLeftEdge(Keyboard.Params params) { mHitBox.left = params.mHorizontalEdgesPadding; } public void markAsRightEdge(Keyboard.Params params) { mHitBox.right = params.mOccupiedWidth - params.mHorizontalEdgesPadding; } public void markAsTopEdge(Keyboard.Params params) { mHitBox.top = params.mTopPadding; } public void markAsBottomEdge(Keyboard.Params params) { mHitBox.bottom = params.mOccupiedHeight + params.mBottomPadding; } public final boolean isSpacer() { return this instanceof Spacer; } public boolean isShift() { return mCode == Keyboard.CODE_SHIFT; } public boolean isModifier() { return mCode == Keyboard.CODE_SHIFT || mCode == Keyboard.CODE_SWITCH_ALPHA_SYMBOL; } public boolean isRepeatable() { return (mActionFlags & ACTION_FLAGS_IS_REPEATABLE) != 0; } public boolean noKeyPreview() { return (mActionFlags & ACTION_FLAGS_NO_KEY_PREVIEW) != 0; } public boolean altCodeWhileTyping() { return (mActionFlags & ACTION_FLAGS_ALT_CODE_WHILE_TYPING) != 0; } public boolean isLongPressEnabled() { // We need not start long press timer on the key which has activated shifted letter. return (mActionFlags & ACTION_FLAGS_ENABLE_LONG_PRESS) != 0 && (mLabelFlags & LABEL_FLAGS_SHIFTED_LETTER_ACTIVATED) == 0; } public Typeface selectTypeface(Typeface defaultTypeface) { // TODO: Handle "bold" here too? if ((mLabelFlags & LABEL_FLAGS_FONT_NORMAL) != 0) { return Typeface.DEFAULT; } else if ((mLabelFlags & LABEL_FLAGS_FONT_MONO_SPACE) != 0) { return Typeface.MONOSPACE; } else { return defaultTypeface; } } public int selectTextSize(int letter, int largeLetter, int label, int hintLabel) { if (StringUtils.codePointCount(mLabel) > 1 && (mLabelFlags & (LABEL_FLAGS_FOLLOW_KEY_LETTER_RATIO | LABEL_FLAGS_FOLLOW_KEY_HINT_LABEL_RATIO)) == 0) { return label; } else if ((mLabelFlags & LABEL_FLAGS_FOLLOW_KEY_HINT_LABEL_RATIO) != 0) { return hintLabel; } else if ((mLabelFlags & LABEL_FLAGS_LARGE_LETTER) != 0) { return largeLetter; } else { return letter; } } public boolean isAlignLeft() { return (mLabelFlags & LABEL_FLAGS_ALIGN_LEFT) != 0; } public boolean isAlignRight() { return (mLabelFlags & LABEL_FLAGS_ALIGN_RIGHT) != 0; } public boolean isAlignLeftOfCenter() { return (mLabelFlags & LABEL_FLAGS_ALIGN_LEFT_OF_CENTER) != 0; } public boolean hasPopupHint() { return (mLabelFlags & LABEL_FLAGS_HAS_POPUP_HINT) != 0; } public boolean hasShiftedLetterHint() { return (mLabelFlags & LABEL_FLAGS_HAS_SHIFTED_LETTER_HINT) != 0; } public boolean hasHintLabel() { return (mLabelFlags & LABEL_FLAGS_HAS_HINT_LABEL) != 0; } public boolean hasLabelWithIconLeft() { return (mLabelFlags & LABEL_FLAGS_WITH_ICON_LEFT) != 0; } public boolean hasLabelWithIconRight() { return (mLabelFlags & LABEL_FLAGS_WITH_ICON_RIGHT) != 0; } public boolean needsXScale() { return (mLabelFlags & LABEL_FLAGS_AUTO_X_SCALE) != 0; } public boolean isShiftedLetterActivated() { return (mLabelFlags & LABEL_FLAGS_SHIFTED_LETTER_ACTIVATED) != 0; } public int getMoreKeysColumn() { return mMoreKeysColumnAndFlags & MORE_KEYS_COLUMN_MASK; } public boolean isFixedColumnOrderMoreKeys() { return (mMoreKeysColumnAndFlags & MORE_KEYS_FLAGS_FIXED_COLUMN_ORDER) != 0; } public boolean hasLabelsInMoreKeys() { return (mMoreKeysColumnAndFlags & MORE_KEYS_FLAGS_HAS_LABELS) != 0; } public boolean needsDividersInMoreKeys() { return (mMoreKeysColumnAndFlags & MORE_KEYS_FLAGS_NEEDS_DIVIDERS) != 0; } public boolean hasEmbeddedMoreKey() { return (mMoreKeysColumnAndFlags & MORE_KEYS_FLAGS_EMBEDDED_MORE_KEY) != 0; } public Drawable getIcon(KeyboardIconsSet iconSet) { final int iconId = mEnabled ? mIconId : mDisabledIconId; return iconSet.getIconDrawable(iconId); } public Drawable getPreviewIcon(KeyboardIconsSet iconSet) { return mPreviewIconId != KeyboardIconsSet.ICON_UNDEFINED ? iconSet.getIconDrawable(mPreviewIconId) : iconSet.getIconDrawable(mIconId); } /** * Informs the key that it has been pressed, in case it needs to change its appearance or * state. * @see #onReleased() */ public void onPressed() { mPressed = true; } /** * Informs the key that it has been released, in case it needs to change its appearance or * state. * @see #onPressed() */ public void onReleased() { mPressed = false; } public boolean isEnabled() { return mEnabled; } public void setEnabled(boolean enabled) { mEnabled = enabled; } /** * Detects if a point falls on this key. * @param x the x-coordinate of the point * @param y the y-coordinate of the point * @return whether or not the point falls on the key. If the key is attached to an edge, it * will assume that all points between the key and the edge are considered to be on the key. * @see #markAsLeftEdge(Keyboard.Params) 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() { switch (mBackgroundType) { case BACKGROUND_TYPE_FUNCTIONAL: return mPressed ? KEY_STATE_FUNCTIONAL_PRESSED : KEY_STATE_FUNCTIONAL_NORMAL; case BACKGROUND_TYPE_ACTION: return mPressed ? KEY_STATE_ACTIVE_PRESSED : KEY_STATE_ACTIVE_NORMAL; case BACKGROUND_TYPE_STICKY_OFF: return mPressed ? KEY_STATE_PRESSED_HIGHLIGHT_OFF : KEY_STATE_NORMAL_HIGHLIGHT_OFF; case BACKGROUND_TYPE_STICKY_ON: return mPressed ? KEY_STATE_PRESSED_HIGHLIGHT_ON : KEY_STATE_NORMAL_HIGHLIGHT_ON; default: /* BACKGROUND_TYPE_NORMAL */ return mPressed ? KEY_STATE_PRESSED : KEY_STATE_NORMAL; } } public static class Spacer extends Key { public Spacer(Resources res, Keyboard.Params params, Keyboard.Builder.Row row, XmlPullParser parser, KeyStyles keyStyles) throws XmlPullParserException { super(res, params, row, parser, keyStyles); } /** * This constructor is being used only for divider in more keys keyboard. */ protected Spacer(Keyboard.Params params, int x, int y, int width, int height) { super(params, null, null, KeyboardIconsSet.ICON_UNDEFINED, Keyboard.CODE_UNSPECIFIED, null, x, y, width, height, 0); } } }