The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008-2009 Google Inc. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| 5 | * use this file except in compliance with the License. You may obtain a copy of |
| 6 | * the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 12 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 13 | * License for the specific language governing permissions and limitations under |
| 14 | * the License. |
| 15 | */ |
| 16 | |
| 17 | package android.inputmethodservice; |
| 18 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 19 | import android.content.Context; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 20 | import android.content.res.TypedArray; |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 21 | import android.graphics.Bitmap; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 22 | import android.graphics.Canvas; |
| 23 | import android.graphics.Paint; |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 24 | import android.graphics.PorterDuff; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 25 | import android.graphics.Rect; |
| 26 | import android.graphics.Typeface; |
| 27 | import android.graphics.Paint.Align; |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 28 | import android.graphics.Region.Op; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 29 | import android.graphics.drawable.Drawable; |
| 30 | import android.inputmethodservice.Keyboard.Key; |
| 31 | import android.os.Handler; |
| 32 | import android.os.Message; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 33 | import android.util.AttributeSet; |
Amith Yamasani | e403700 | 2009-07-23 17:38:15 -0700 | [diff] [blame] | 34 | import android.util.TypedValue; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 35 | import android.view.GestureDetector; |
| 36 | import android.view.Gravity; |
| 37 | import android.view.LayoutInflater; |
| 38 | import android.view.MotionEvent; |
| 39 | import android.view.View; |
Amith Yamasani | b974c7a | 2009-07-21 15:05:39 -0700 | [diff] [blame] | 40 | import android.view.ViewConfiguration; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 41 | import android.view.ViewGroup.LayoutParams; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 42 | import android.widget.PopupWindow; |
| 43 | import android.widget.TextView; |
| 44 | |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 45 | import com.android.internal.R; |
| 46 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 47 | import java.util.Arrays; |
| 48 | import java.util.HashMap; |
| 49 | import java.util.List; |
| 50 | import java.util.Map; |
| 51 | |
| 52 | /** |
| 53 | * A view that renders a virtual {@link Keyboard}. It handles rendering of keys and |
| 54 | * detecting key presses and touch movements. |
| 55 | * |
| 56 | * @attr ref android.R.styleable#KeyboardView_keyBackground |
| 57 | * @attr ref android.R.styleable#KeyboardView_keyPreviewLayout |
| 58 | * @attr ref android.R.styleable#KeyboardView_keyPreviewOffset |
| 59 | * @attr ref android.R.styleable#KeyboardView_labelTextSize |
| 60 | * @attr ref android.R.styleable#KeyboardView_keyTextSize |
| 61 | * @attr ref android.R.styleable#KeyboardView_keyTextColor |
| 62 | * @attr ref android.R.styleable#KeyboardView_verticalCorrection |
| 63 | * @attr ref android.R.styleable#KeyboardView_popupLayout |
| 64 | */ |
| 65 | public class KeyboardView extends View implements View.OnClickListener { |
| 66 | |
| 67 | /** |
| 68 | * Listener for virtual keyboard events. |
| 69 | */ |
| 70 | public interface OnKeyboardActionListener { |
| 71 | |
| 72 | /** |
| 73 | * Called when the user presses a key. This is sent before the {@link #onKey} is called. |
| 74 | * For keys that repeat, this is only called once. |
| 75 | * @param primaryCode the unicode of the key being pressed. If the touch is not on a valid |
| 76 | * key, the value will be zero. |
| 77 | */ |
| 78 | void onPress(int primaryCode); |
| 79 | |
| 80 | /** |
| 81 | * Called when the user releases a key. This is sent after the {@link #onKey} is called. |
| 82 | * For keys that repeat, this is only called once. |
| 83 | * @param primaryCode the code of the key that was released |
| 84 | */ |
| 85 | void onRelease(int primaryCode); |
| 86 | |
| 87 | /** |
| 88 | * Send a key press to the listener. |
| 89 | * @param primaryCode this is the key that was pressed |
| 90 | * @param keyCodes the codes for all the possible alternative keys |
| 91 | * with the primary code being the first. If the primary key code is |
| 92 | * a single character such as an alphabet or number or symbol, the alternatives |
| 93 | * will include other characters that may be on the same key or adjacent keys. |
| 94 | * These codes are useful to correct for accidental presses of a key adjacent to |
| 95 | * the intended key. |
| 96 | */ |
| 97 | void onKey(int primaryCode, int[] keyCodes); |
| 98 | |
| 99 | /** |
| 100 | * Sends a sequence of characters to the listener. |
| 101 | * @param text the sequence of characters to be displayed. |
| 102 | */ |
| 103 | void onText(CharSequence text); |
| 104 | |
| 105 | /** |
| 106 | * Called when the user quickly moves the finger from right to left. |
| 107 | */ |
| 108 | void swipeLeft(); |
| 109 | |
| 110 | /** |
| 111 | * Called when the user quickly moves the finger from left to right. |
| 112 | */ |
| 113 | void swipeRight(); |
| 114 | |
| 115 | /** |
| 116 | * Called when the user quickly moves the finger from up to down. |
| 117 | */ |
| 118 | void swipeDown(); |
| 119 | |
| 120 | /** |
| 121 | * Called when the user quickly moves the finger from down to up. |
| 122 | */ |
| 123 | void swipeUp(); |
| 124 | } |
| 125 | |
| 126 | private static final boolean DEBUG = false; |
| 127 | private static final int NOT_A_KEY = -1; |
| 128 | private static final int[] KEY_DELETE = { Keyboard.KEYCODE_DELETE }; |
| 129 | private static final int[] LONG_PRESSABLE_STATE_SET = { R.attr.state_long_pressable }; |
| 130 | |
| 131 | private Keyboard mKeyboard; |
| 132 | private int mCurrentKeyIndex = NOT_A_KEY; |
| 133 | private int mLabelTextSize; |
| 134 | private int mKeyTextSize; |
| 135 | private int mKeyTextColor; |
| 136 | private float mShadowRadius; |
| 137 | private int mShadowColor; |
| 138 | private float mBackgroundDimAmount; |
| 139 | |
| 140 | private TextView mPreviewText; |
| 141 | private PopupWindow mPreviewPopup; |
| 142 | private int mPreviewTextSizeLarge; |
| 143 | private int mPreviewOffset; |
| 144 | private int mPreviewHeight; |
| 145 | private int[] mOffsetInWindow; |
| 146 | |
| 147 | private PopupWindow mPopupKeyboard; |
| 148 | private View mMiniKeyboardContainer; |
| 149 | private KeyboardView mMiniKeyboard; |
| 150 | private boolean mMiniKeyboardOnScreen; |
| 151 | private View mPopupParent; |
| 152 | private int mMiniKeyboardOffsetX; |
| 153 | private int mMiniKeyboardOffsetY; |
| 154 | private Map<Key,View> mMiniKeyboardCache; |
| 155 | private int[] mWindowOffset; |
| 156 | private Key[] mKeys; |
| 157 | |
| 158 | /** Listener for {@link OnKeyboardActionListener}. */ |
| 159 | private OnKeyboardActionListener mKeyboardActionListener; |
| 160 | |
| 161 | private static final int MSG_SHOW_PREVIEW = 1; |
| 162 | private static final int MSG_REMOVE_PREVIEW = 2; |
| 163 | private static final int MSG_REPEAT = 3; |
| 164 | private static final int MSG_LONGPRESS = 4; |
Amith Yamasani | e403700 | 2009-07-23 17:38:15 -0700 | [diff] [blame] | 165 | |
Amith Yamasani | 29d85df | 2009-08-11 16:42:51 -0700 | [diff] [blame] | 166 | private static final int DELAY_BEFORE_PREVIEW = 0; |
| 167 | private static final int DELAY_AFTER_PREVIEW = 70; |
Amith Yamasani | 7aa936e | 2010-02-11 18:51:25 -0800 | [diff] [blame] | 168 | private static final int DEBOUNCE_TIME = 70; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 169 | |
| 170 | private int mVerticalCorrection; |
| 171 | private int mProximityThreshold; |
| 172 | |
| 173 | private boolean mPreviewCentered = false; |
| 174 | private boolean mShowPreview = true; |
| 175 | private boolean mShowTouchPoints = true; |
| 176 | private int mPopupPreviewX; |
| 177 | private int mPopupPreviewY; |
Amith Yamasani | 42973a4 | 2010-03-19 17:21:44 -0700 | [diff] [blame] | 178 | private int mWindowY; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 179 | |
| 180 | private int mLastX; |
| 181 | private int mLastY; |
| 182 | private int mStartX; |
| 183 | private int mStartY; |
| 184 | |
| 185 | private boolean mProximityCorrectOn; |
| 186 | |
| 187 | private Paint mPaint; |
| 188 | private Rect mPadding; |
| 189 | |
| 190 | private long mDownTime; |
| 191 | private long mLastMoveTime; |
| 192 | private int mLastKey; |
| 193 | private int mLastCodeX; |
| 194 | private int mLastCodeY; |
| 195 | private int mCurrentKey = NOT_A_KEY; |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 196 | private int mDownKey = NOT_A_KEY; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 197 | private long mLastKeyTime; |
| 198 | private long mCurrentKeyTime; |
| 199 | private int[] mKeyIndices = new int[12]; |
| 200 | private GestureDetector mGestureDetector; |
| 201 | private int mPopupX; |
| 202 | private int mPopupY; |
| 203 | private int mRepeatKeyIndex = NOT_A_KEY; |
| 204 | private int mPopupLayout; |
| 205 | private boolean mAbortKey; |
| 206 | private Key mInvalidatedKey; |
| 207 | private Rect mClipRegion = new Rect(0, 0, 0, 0); |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 208 | private boolean mPossiblePoly; |
| 209 | private SwipeTracker mSwipeTracker = new SwipeTracker(); |
| 210 | private int mSwipeThreshold; |
| 211 | private boolean mDisambiguateSwipe; |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 212 | |
| 213 | // Variables for dealing with multiple pointers |
| 214 | private int mOldPointerCount = 1; |
| 215 | private float mOldPointerX; |
| 216 | private float mOldPointerY; |
| 217 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 218 | private Drawable mKeyBackground; |
| 219 | |
| 220 | private static final int REPEAT_INTERVAL = 50; // ~20 keys per second |
| 221 | private static final int REPEAT_START_DELAY = 400; |
Amith Yamasani | b974c7a | 2009-07-21 15:05:39 -0700 | [diff] [blame] | 222 | private static final int LONGPRESS_TIMEOUT = ViewConfiguration.getLongPressTimeout(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 223 | |
| 224 | private static int MAX_NEARBY_KEYS = 12; |
| 225 | private int[] mDistances = new int[MAX_NEARBY_KEYS]; |
| 226 | |
| 227 | // For multi-tap |
| 228 | private int mLastSentIndex; |
| 229 | private int mTapCount; |
| 230 | private long mLastTapTime; |
| 231 | private boolean mInMultiTap; |
| 232 | private static final int MULTITAP_INTERVAL = 800; // milliseconds |
| 233 | private StringBuilder mPreviewLabel = new StringBuilder(1); |
| 234 | |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 235 | /** Whether the keyboard bitmap needs to be redrawn before it's blitted. **/ |
| 236 | private boolean mDrawPending; |
| 237 | /** The dirty region in the keyboard bitmap */ |
| 238 | private Rect mDirtyRect = new Rect(); |
| 239 | /** The keyboard bitmap for faster updates */ |
| 240 | private Bitmap mBuffer; |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 241 | /** Notes if the keyboard just changed, so that we could possibly reallocate the mBuffer. */ |
| 242 | private boolean mKeyboardChanged; |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 243 | /** The canvas for the above mutable keyboard bitmap */ |
| 244 | private Canvas mCanvas; |
| 245 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 246 | Handler mHandler = new Handler() { |
| 247 | @Override |
| 248 | public void handleMessage(Message msg) { |
| 249 | switch (msg.what) { |
| 250 | case MSG_SHOW_PREVIEW: |
| 251 | showKey(msg.arg1); |
| 252 | break; |
| 253 | case MSG_REMOVE_PREVIEW: |
| 254 | mPreviewText.setVisibility(INVISIBLE); |
| 255 | break; |
| 256 | case MSG_REPEAT: |
| 257 | if (repeatKey()) { |
| 258 | Message repeat = Message.obtain(this, MSG_REPEAT); |
| 259 | sendMessageDelayed(repeat, REPEAT_INTERVAL); |
| 260 | } |
| 261 | break; |
| 262 | case MSG_LONGPRESS: |
| 263 | openPopupIfRequired((MotionEvent) msg.obj); |
| 264 | break; |
| 265 | } |
| 266 | } |
| 267 | }; |
| 268 | |
| 269 | public KeyboardView(Context context, AttributeSet attrs) { |
| 270 | this(context, attrs, com.android.internal.R.attr.keyboardViewStyle); |
| 271 | } |
| 272 | |
| 273 | public KeyboardView(Context context, AttributeSet attrs, int defStyle) { |
| 274 | super(context, attrs, defStyle); |
| 275 | |
| 276 | TypedArray a = |
| 277 | context.obtainStyledAttributes( |
| 278 | attrs, android.R.styleable.KeyboardView, defStyle, 0); |
| 279 | |
| 280 | LayoutInflater inflate = |
| 281 | (LayoutInflater) context |
| 282 | .getSystemService(Context.LAYOUT_INFLATER_SERVICE); |
| 283 | |
| 284 | int previewLayout = 0; |
| 285 | int keyTextSize = 0; |
| 286 | |
| 287 | int n = a.getIndexCount(); |
| 288 | |
| 289 | for (int i = 0; i < n; i++) { |
| 290 | int attr = a.getIndex(i); |
| 291 | |
| 292 | switch (attr) { |
| 293 | case com.android.internal.R.styleable.KeyboardView_keyBackground: |
| 294 | mKeyBackground = a.getDrawable(attr); |
| 295 | break; |
| 296 | case com.android.internal.R.styleable.KeyboardView_verticalCorrection: |
| 297 | mVerticalCorrection = a.getDimensionPixelOffset(attr, 0); |
| 298 | break; |
| 299 | case com.android.internal.R.styleable.KeyboardView_keyPreviewLayout: |
| 300 | previewLayout = a.getResourceId(attr, 0); |
| 301 | break; |
| 302 | case com.android.internal.R.styleable.KeyboardView_keyPreviewOffset: |
| 303 | mPreviewOffset = a.getDimensionPixelOffset(attr, 0); |
| 304 | break; |
| 305 | case com.android.internal.R.styleable.KeyboardView_keyPreviewHeight: |
| 306 | mPreviewHeight = a.getDimensionPixelSize(attr, 80); |
| 307 | break; |
| 308 | case com.android.internal.R.styleable.KeyboardView_keyTextSize: |
| 309 | mKeyTextSize = a.getDimensionPixelSize(attr, 18); |
| 310 | break; |
| 311 | case com.android.internal.R.styleable.KeyboardView_keyTextColor: |
| 312 | mKeyTextColor = a.getColor(attr, 0xFF000000); |
| 313 | break; |
| 314 | case com.android.internal.R.styleable.KeyboardView_labelTextSize: |
| 315 | mLabelTextSize = a.getDimensionPixelSize(attr, 14); |
| 316 | break; |
| 317 | case com.android.internal.R.styleable.KeyboardView_popupLayout: |
| 318 | mPopupLayout = a.getResourceId(attr, 0); |
| 319 | break; |
| 320 | case com.android.internal.R.styleable.KeyboardView_shadowColor: |
| 321 | mShadowColor = a.getColor(attr, 0); |
| 322 | break; |
| 323 | case com.android.internal.R.styleable.KeyboardView_shadowRadius: |
| 324 | mShadowRadius = a.getFloat(attr, 0f); |
| 325 | break; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | a = mContext.obtainStyledAttributes( |
| 330 | com.android.internal.R.styleable.Theme); |
| 331 | mBackgroundDimAmount = a.getFloat(android.R.styleable.Theme_backgroundDimAmount, 0.5f); |
| 332 | |
| 333 | mPreviewPopup = new PopupWindow(context); |
| 334 | if (previewLayout != 0) { |
| 335 | mPreviewText = (TextView) inflate.inflate(previewLayout, null); |
| 336 | mPreviewTextSizeLarge = (int) mPreviewText.getTextSize(); |
| 337 | mPreviewPopup.setContentView(mPreviewText); |
| 338 | mPreviewPopup.setBackgroundDrawable(null); |
| 339 | } else { |
| 340 | mShowPreview = false; |
| 341 | } |
| 342 | |
| 343 | mPreviewPopup.setTouchable(false); |
| 344 | |
| 345 | mPopupKeyboard = new PopupWindow(context); |
| 346 | mPopupKeyboard.setBackgroundDrawable(null); |
| 347 | //mPopupKeyboard.setClippingEnabled(false); |
| 348 | |
| 349 | mPopupParent = this; |
| 350 | //mPredicting = true; |
| 351 | |
| 352 | mPaint = new Paint(); |
| 353 | mPaint.setAntiAlias(true); |
| 354 | mPaint.setTextSize(keyTextSize); |
| 355 | mPaint.setTextAlign(Align.CENTER); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 356 | mPaint.setAlpha(255); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 357 | |
| 358 | mPadding = new Rect(0, 0, 0, 0); |
| 359 | mMiniKeyboardCache = new HashMap<Key,View>(); |
| 360 | mKeyBackground.getPadding(mPadding); |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 361 | |
| 362 | mSwipeThreshold = (int) (500 * getResources().getDisplayMetrics().density); |
| 363 | mDisambiguateSwipe = getResources().getBoolean( |
| 364 | com.android.internal.R.bool.config_swipeDisambiguation); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 365 | resetMultiTap(); |
| 366 | initGestureDetector(); |
| 367 | } |
| 368 | |
| 369 | private void initGestureDetector() { |
| 370 | mGestureDetector = new GestureDetector(getContext(), new GestureDetector.SimpleOnGestureListener() { |
| 371 | @Override |
| 372 | public boolean onFling(MotionEvent me1, MotionEvent me2, |
| 373 | float velocityX, float velocityY) { |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 374 | if (mPossiblePoly) return false; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 375 | final float absX = Math.abs(velocityX); |
| 376 | final float absY = Math.abs(velocityY); |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 377 | float deltaX = me2.getX() - me1.getX(); |
| 378 | float deltaY = me2.getY() - me1.getY(); |
| 379 | int travelX = getWidth() / 2; // Half the keyboard width |
| 380 | int travelY = getHeight() / 2; // Half the keyboard height |
| 381 | mSwipeTracker.computeCurrentVelocity(1000); |
| 382 | final float endingVelocityX = mSwipeTracker.getXVelocity(); |
| 383 | final float endingVelocityY = mSwipeTracker.getYVelocity(); |
| 384 | boolean sendDownKey = false; |
| 385 | if (velocityX > mSwipeThreshold && absY < absX && deltaX > travelX) { |
| 386 | if (mDisambiguateSwipe && endingVelocityX < velocityX / 4) { |
| 387 | sendDownKey = true; |
| 388 | } else { |
| 389 | swipeRight(); |
| 390 | return true; |
| 391 | } |
| 392 | } else if (velocityX < -mSwipeThreshold && absY < absX && deltaX < -travelX) { |
| 393 | if (mDisambiguateSwipe && endingVelocityX > velocityX / 4) { |
| 394 | sendDownKey = true; |
| 395 | } else { |
| 396 | swipeLeft(); |
| 397 | return true; |
| 398 | } |
| 399 | } else if (velocityY < -mSwipeThreshold && absX < absY && deltaY < -travelY) { |
| 400 | if (mDisambiguateSwipe && endingVelocityY > velocityY / 4) { |
| 401 | sendDownKey = true; |
| 402 | } else { |
| 403 | swipeUp(); |
| 404 | return true; |
| 405 | } |
| 406 | } else if (velocityY > mSwipeThreshold && absX < absY / 2 && deltaY > travelY) { |
| 407 | if (mDisambiguateSwipe && endingVelocityY < velocityY / 4) { |
| 408 | sendDownKey = true; |
| 409 | } else { |
| 410 | swipeDown(); |
| 411 | return true; |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | if (sendDownKey) { |
| 416 | detectAndSendKey(mDownKey, mStartX, mStartY, me1.getEventTime()); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 417 | } |
| 418 | return false; |
| 419 | } |
| 420 | }); |
| 421 | |
| 422 | mGestureDetector.setIsLongpressEnabled(false); |
| 423 | } |
| 424 | |
| 425 | public void setOnKeyboardActionListener(OnKeyboardActionListener listener) { |
| 426 | mKeyboardActionListener = listener; |
| 427 | } |
| 428 | |
| 429 | /** |
| 430 | * Returns the {@link OnKeyboardActionListener} object. |
| 431 | * @return the listener attached to this keyboard |
| 432 | */ |
| 433 | protected OnKeyboardActionListener getOnKeyboardActionListener() { |
| 434 | return mKeyboardActionListener; |
| 435 | } |
| 436 | |
| 437 | /** |
| 438 | * Attaches a keyboard to this view. The keyboard can be switched at any time and the |
| 439 | * view will re-layout itself to accommodate the keyboard. |
| 440 | * @see Keyboard |
| 441 | * @see #getKeyboard() |
| 442 | * @param keyboard the keyboard to display in this view |
| 443 | */ |
| 444 | public void setKeyboard(Keyboard keyboard) { |
| 445 | if (mKeyboard != null) { |
| 446 | showPreview(NOT_A_KEY); |
| 447 | } |
Amith Yamasani | ebe3d51 | 2009-09-17 11:27:14 -0700 | [diff] [blame] | 448 | // Remove any pending messages |
| 449 | removeMessages(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 450 | mKeyboard = keyboard; |
| 451 | List<Key> keys = mKeyboard.getKeys(); |
| 452 | mKeys = keys.toArray(new Key[keys.size()]); |
| 453 | requestLayout(); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 454 | // Hint to reallocate the buffer if the size changed |
| 455 | mKeyboardChanged = true; |
Amith Yamasani | f04da95 | 2009-05-06 15:46:00 -0700 | [diff] [blame] | 456 | invalidateAllKeys(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 457 | computeProximityThreshold(keyboard); |
| 458 | mMiniKeyboardCache.clear(); // Not really necessary to do every time, but will free up views |
Amith Yamasani | b974c7a | 2009-07-21 15:05:39 -0700 | [diff] [blame] | 459 | // Switching to a different keyboard should abort any pending keys so that the key up |
| 460 | // doesn't get delivered to the old or new keyboard |
| 461 | mAbortKey = true; // Until the next ACTION_DOWN |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | /** |
| 465 | * Returns the current keyboard being displayed by this view. |
| 466 | * @return the currently attached keyboard |
| 467 | * @see #setKeyboard(Keyboard) |
| 468 | */ |
| 469 | public Keyboard getKeyboard() { |
| 470 | return mKeyboard; |
| 471 | } |
| 472 | |
| 473 | /** |
| 474 | * Sets the state of the shift key of the keyboard, if any. |
| 475 | * @param shifted whether or not to enable the state of the shift key |
| 476 | * @return true if the shift key state changed, false if there was no change |
| 477 | * @see KeyboardView#isShifted() |
| 478 | */ |
| 479 | public boolean setShifted(boolean shifted) { |
| 480 | if (mKeyboard != null) { |
| 481 | if (mKeyboard.setShifted(shifted)) { |
| 482 | // The whole keyboard probably needs to be redrawn |
Amith Yamasani | f04da95 | 2009-05-06 15:46:00 -0700 | [diff] [blame] | 483 | invalidateAllKeys(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 484 | return true; |
| 485 | } |
| 486 | } |
| 487 | return false; |
| 488 | } |
| 489 | |
| 490 | /** |
| 491 | * Returns the state of the shift key of the keyboard, if any. |
| 492 | * @return true if the shift is in a pressed state, false otherwise. If there is |
| 493 | * no shift key on the keyboard or there is no keyboard attached, it returns false. |
| 494 | * @see KeyboardView#setShifted(boolean) |
| 495 | */ |
| 496 | public boolean isShifted() { |
| 497 | if (mKeyboard != null) { |
| 498 | return mKeyboard.isShifted(); |
| 499 | } |
| 500 | return false; |
| 501 | } |
| 502 | |
| 503 | /** |
| 504 | * Enables or disables the key feedback popup. This is a popup that shows a magnified |
| 505 | * version of the depressed key. By default the preview is enabled. |
| 506 | * @param previewEnabled whether or not to enable the key feedback popup |
| 507 | * @see #isPreviewEnabled() |
| 508 | */ |
| 509 | public void setPreviewEnabled(boolean previewEnabled) { |
| 510 | mShowPreview = previewEnabled; |
| 511 | } |
| 512 | |
| 513 | /** |
| 514 | * Returns the enabled state of the key feedback popup. |
| 515 | * @return whether or not the key feedback popup is enabled |
| 516 | * @see #setPreviewEnabled(boolean) |
| 517 | */ |
| 518 | public boolean isPreviewEnabled() { |
| 519 | return mShowPreview; |
| 520 | } |
| 521 | |
| 522 | public void setVerticalCorrection(int verticalOffset) { |
| 523 | |
| 524 | } |
| 525 | public void setPopupParent(View v) { |
| 526 | mPopupParent = v; |
| 527 | } |
| 528 | |
| 529 | public void setPopupOffset(int x, int y) { |
| 530 | mMiniKeyboardOffsetX = x; |
| 531 | mMiniKeyboardOffsetY = y; |
| 532 | if (mPreviewPopup.isShowing()) { |
| 533 | mPreviewPopup.dismiss(); |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | /** |
Andy Stadler | f8a7cea | 2009-04-10 16:24:47 -0700 | [diff] [blame] | 538 | * When enabled, calls to {@link OnKeyboardActionListener#onKey} will include key |
| 539 | * codes for adjacent keys. When disabled, only the primary key code will be |
| 540 | * reported. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 541 | * @param enabled whether or not the proximity correction is enabled |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 542 | */ |
| 543 | public void setProximityCorrectionEnabled(boolean enabled) { |
| 544 | mProximityCorrectOn = enabled; |
| 545 | } |
| 546 | |
| 547 | /** |
Andy Stadler | f8a7cea | 2009-04-10 16:24:47 -0700 | [diff] [blame] | 548 | * Returns true if proximity correction is enabled. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 549 | */ |
| 550 | public boolean isProximityCorrectionEnabled() { |
| 551 | return mProximityCorrectOn; |
| 552 | } |
| 553 | |
| 554 | /** |
| 555 | * Popup keyboard close button clicked. |
| 556 | * @hide |
| 557 | */ |
| 558 | public void onClick(View v) { |
| 559 | dismissPopupKeyboard(); |
| 560 | } |
| 561 | |
| 562 | private CharSequence adjustCase(CharSequence label) { |
The Android Open Source Project | 4df2423 | 2009-03-05 14:34:35 -0800 | [diff] [blame] | 563 | if (mKeyboard.isShifted() && label != null && label.length() < 3 |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 564 | && Character.isLowerCase(label.charAt(0))) { |
| 565 | label = label.toString().toUpperCase(); |
| 566 | } |
| 567 | return label; |
| 568 | } |
| 569 | |
| 570 | @Override |
| 571 | public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| 572 | // Round up a little |
| 573 | if (mKeyboard == null) { |
| 574 | setMeasuredDimension(mPaddingLeft + mPaddingRight, mPaddingTop + mPaddingBottom); |
| 575 | } else { |
| 576 | int width = mKeyboard.getMinWidth() + mPaddingLeft + mPaddingRight; |
| 577 | if (MeasureSpec.getSize(widthMeasureSpec) < width + 10) { |
| 578 | width = MeasureSpec.getSize(widthMeasureSpec); |
| 579 | } |
| 580 | setMeasuredDimension(width, mKeyboard.getHeight() + mPaddingTop + mPaddingBottom); |
| 581 | } |
| 582 | } |
| 583 | |
| 584 | /** |
| 585 | * Compute the average distance between adjacent keys (horizontally and vertically) |
| 586 | * and square it to get the proximity threshold. We use a square here and in computing |
| 587 | * the touch distance from a key's center to avoid taking a square root. |
| 588 | * @param keyboard |
| 589 | */ |
| 590 | private void computeProximityThreshold(Keyboard keyboard) { |
| 591 | if (keyboard == null) return; |
| 592 | final Key[] keys = mKeys; |
| 593 | if (keys == null) return; |
| 594 | int length = keys.length; |
| 595 | int dimensionSum = 0; |
| 596 | for (int i = 0; i < length; i++) { |
| 597 | Key key = keys[i]; |
| 598 | dimensionSum += Math.min(key.width, key.height) + key.gap; |
| 599 | } |
| 600 | if (dimensionSum < 0 || length == 0) return; |
| 601 | mProximityThreshold = (int) (dimensionSum * 1.4f / length); |
| 602 | mProximityThreshold *= mProximityThreshold; // Square it |
| 603 | } |
| 604 | |
| 605 | @Override |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 606 | public void onSizeChanged(int w, int h, int oldw, int oldh) { |
| 607 | super.onSizeChanged(w, h, oldw, oldh); |
| 608 | // Release the buffer, if any and it will be reallocated on the next draw |
| 609 | mBuffer = null; |
| 610 | } |
| 611 | |
| 612 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 613 | public void onDraw(Canvas canvas) { |
| 614 | super.onDraw(canvas); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 615 | if (mDrawPending || mBuffer == null || mKeyboardChanged) { |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 616 | onBufferDraw(); |
| 617 | } |
| 618 | canvas.drawBitmap(mBuffer, 0, 0, null); |
| 619 | } |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 620 | |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 621 | private void onBufferDraw() { |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 622 | if (mBuffer == null || mKeyboardChanged) { |
| 623 | if (mBuffer == null || mKeyboardChanged && |
| 624 | (mBuffer.getWidth() != getWidth() || mBuffer.getHeight() != getHeight())) { |
Romain Guy | 46a61bb | 2010-02-08 11:57:55 -0800 | [diff] [blame] | 625 | // Make sure our bitmap is at least 1x1 |
| 626 | final int width = Math.max(1, getWidth()); |
| 627 | final int height = Math.max(1, getHeight()); |
| 628 | mBuffer = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 629 | mCanvas = new Canvas(mBuffer); |
| 630 | } |
Amith Yamasani | f04da95 | 2009-05-06 15:46:00 -0700 | [diff] [blame] | 631 | invalidateAllKeys(); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 632 | mKeyboardChanged = false; |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 633 | } |
| 634 | final Canvas canvas = mCanvas; |
| 635 | canvas.clipRect(mDirtyRect, Op.REPLACE); |
| 636 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 637 | if (mKeyboard == null) return; |
| 638 | |
| 639 | final Paint paint = mPaint; |
| 640 | final Drawable keyBackground = mKeyBackground; |
| 641 | final Rect clipRegion = mClipRegion; |
| 642 | final Rect padding = mPadding; |
| 643 | final int kbdPaddingLeft = mPaddingLeft; |
| 644 | final int kbdPaddingTop = mPaddingTop; |
| 645 | final Key[] keys = mKeys; |
| 646 | final Key invalidKey = mInvalidatedKey; |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 647 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 648 | paint.setColor(mKeyTextColor); |
| 649 | boolean drawSingleKey = false; |
| 650 | if (invalidKey != null && canvas.getClipBounds(clipRegion)) { |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 651 | // Is clipRegion completely contained within the invalidated key? |
| 652 | if (invalidKey.x + kbdPaddingLeft - 1 <= clipRegion.left && |
| 653 | invalidKey.y + kbdPaddingTop - 1 <= clipRegion.top && |
| 654 | invalidKey.x + invalidKey.width + kbdPaddingLeft + 1 >= clipRegion.right && |
| 655 | invalidKey.y + invalidKey.height + kbdPaddingTop + 1 >= clipRegion.bottom) { |
| 656 | drawSingleKey = true; |
| 657 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 658 | } |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 659 | canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 660 | final int keyCount = keys.length; |
| 661 | for (int i = 0; i < keyCount; i++) { |
| 662 | final Key key = keys[i]; |
| 663 | if (drawSingleKey && invalidKey != key) { |
| 664 | continue; |
| 665 | } |
| 666 | int[] drawableState = key.getCurrentDrawableState(); |
| 667 | keyBackground.setState(drawableState); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 668 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 669 | // Switch the character to uppercase if shift is pressed |
| 670 | String label = key.label == null? null : adjustCase(key.label).toString(); |
| 671 | |
| 672 | final Rect bounds = keyBackground.getBounds(); |
| 673 | if (key.width != bounds.right || |
| 674 | key.height != bounds.bottom) { |
| 675 | keyBackground.setBounds(0, 0, key.width, key.height); |
| 676 | } |
| 677 | canvas.translate(key.x + kbdPaddingLeft, key.y + kbdPaddingTop); |
| 678 | keyBackground.draw(canvas); |
| 679 | |
| 680 | if (label != null) { |
| 681 | // For characters, use large font. For labels like "Done", use small font. |
| 682 | if (label.length() > 1 && key.codes.length < 2) { |
| 683 | paint.setTextSize(mLabelTextSize); |
| 684 | paint.setTypeface(Typeface.DEFAULT_BOLD); |
| 685 | } else { |
| 686 | paint.setTextSize(mKeyTextSize); |
| 687 | paint.setTypeface(Typeface.DEFAULT); |
| 688 | } |
| 689 | // Draw a drop shadow for the text |
| 690 | paint.setShadowLayer(mShadowRadius, 0, 0, mShadowColor); |
| 691 | // Draw the text |
| 692 | canvas.drawText(label, |
| 693 | (key.width - padding.left - padding.right) / 2 |
| 694 | + padding.left, |
| 695 | (key.height - padding.top - padding.bottom) / 2 |
| 696 | + (paint.getTextSize() - paint.descent()) / 2 + padding.top, |
| 697 | paint); |
| 698 | // Turn off drop shadow |
| 699 | paint.setShadowLayer(0, 0, 0, 0); |
| 700 | } else if (key.icon != null) { |
| 701 | final int drawableX = (key.width - padding.left - padding.right |
| 702 | - key.icon.getIntrinsicWidth()) / 2 + padding.left; |
| 703 | final int drawableY = (key.height - padding.top - padding.bottom |
| 704 | - key.icon.getIntrinsicHeight()) / 2 + padding.top; |
| 705 | canvas.translate(drawableX, drawableY); |
| 706 | key.icon.setBounds(0, 0, |
| 707 | key.icon.getIntrinsicWidth(), key.icon.getIntrinsicHeight()); |
| 708 | key.icon.draw(canvas); |
| 709 | canvas.translate(-drawableX, -drawableY); |
| 710 | } |
| 711 | canvas.translate(-key.x - kbdPaddingLeft, -key.y - kbdPaddingTop); |
| 712 | } |
| 713 | mInvalidatedKey = null; |
| 714 | // Overlay a dark rectangle to dim the keyboard |
| 715 | if (mMiniKeyboardOnScreen) { |
| 716 | paint.setColor((int) (mBackgroundDimAmount * 0xFF) << 24); |
| 717 | canvas.drawRect(0, 0, getWidth(), getHeight(), paint); |
| 718 | } |
| 719 | |
| 720 | if (DEBUG && mShowTouchPoints) { |
| 721 | paint.setAlpha(128); |
| 722 | paint.setColor(0xFFFF0000); |
| 723 | canvas.drawCircle(mStartX, mStartY, 3, paint); |
| 724 | canvas.drawLine(mStartX, mStartY, mLastX, mLastY, paint); |
| 725 | paint.setColor(0xFF0000FF); |
| 726 | canvas.drawCircle(mLastX, mLastY, 3, paint); |
| 727 | paint.setColor(0xFF00FF00); |
| 728 | canvas.drawCircle((mStartX + mLastX) / 2, (mStartY + mLastY) / 2, 2, paint); |
| 729 | } |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 730 | |
| 731 | mDrawPending = false; |
| 732 | mDirtyRect.setEmpty(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 733 | } |
| 734 | |
| 735 | private int getKeyIndices(int x, int y, int[] allKeys) { |
| 736 | final Key[] keys = mKeys; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 737 | int primaryIndex = NOT_A_KEY; |
| 738 | int closestKey = NOT_A_KEY; |
| 739 | int closestKeyDist = mProximityThreshold + 1; |
| 740 | java.util.Arrays.fill(mDistances, Integer.MAX_VALUE); |
| 741 | int [] nearestKeyIndices = mKeyboard.getNearestKeys(x, y); |
| 742 | final int keyCount = nearestKeyIndices.length; |
| 743 | for (int i = 0; i < keyCount; i++) { |
| 744 | final Key key = keys[nearestKeyIndices[i]]; |
| 745 | int dist = 0; |
| 746 | boolean isInside = key.isInside(x,y); |
Amith Yamasani | ec5df83 | 2010-02-08 15:24:57 -0800 | [diff] [blame] | 747 | if (isInside) { |
| 748 | primaryIndex = nearestKeyIndices[i]; |
| 749 | } |
| 750 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 751 | if (((mProximityCorrectOn |
| 752 | && (dist = key.squaredDistanceFrom(x, y)) < mProximityThreshold) |
| 753 | || isInside) |
| 754 | && key.codes[0] > 32) { |
| 755 | // Find insertion point |
| 756 | final int nCodes = key.codes.length; |
| 757 | if (dist < closestKeyDist) { |
| 758 | closestKeyDist = dist; |
| 759 | closestKey = nearestKeyIndices[i]; |
| 760 | } |
| 761 | |
| 762 | if (allKeys == null) continue; |
| 763 | |
| 764 | for (int j = 0; j < mDistances.length; j++) { |
| 765 | if (mDistances[j] > dist) { |
| 766 | // Make space for nCodes codes |
| 767 | System.arraycopy(mDistances, j, mDistances, j + nCodes, |
| 768 | mDistances.length - j - nCodes); |
| 769 | System.arraycopy(allKeys, j, allKeys, j + nCodes, |
| 770 | allKeys.length - j - nCodes); |
| 771 | for (int c = 0; c < nCodes; c++) { |
| 772 | allKeys[j + c] = key.codes[c]; |
| 773 | mDistances[j + c] = dist; |
| 774 | } |
| 775 | break; |
| 776 | } |
| 777 | } |
| 778 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 779 | } |
| 780 | if (primaryIndex == NOT_A_KEY) { |
| 781 | primaryIndex = closestKey; |
| 782 | } |
| 783 | return primaryIndex; |
| 784 | } |
| 785 | |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 786 | private void detectAndSendKey(int index, int x, int y, long eventTime) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 787 | if (index != NOT_A_KEY && index < mKeys.length) { |
| 788 | final Key key = mKeys[index]; |
| 789 | if (key.text != null) { |
| 790 | mKeyboardActionListener.onText(key.text); |
| 791 | mKeyboardActionListener.onRelease(NOT_A_KEY); |
| 792 | } else { |
| 793 | int code = key.codes[0]; |
| 794 | //TextEntryState.keyPressedAt(key, x, y); |
| 795 | int[] codes = new int[MAX_NEARBY_KEYS]; |
| 796 | Arrays.fill(codes, NOT_A_KEY); |
| 797 | getKeyIndices(x, y, codes); |
| 798 | // Multi-tap |
| 799 | if (mInMultiTap) { |
| 800 | if (mTapCount != -1) { |
| 801 | mKeyboardActionListener.onKey(Keyboard.KEYCODE_DELETE, KEY_DELETE); |
| 802 | } else { |
| 803 | mTapCount = 0; |
| 804 | } |
| 805 | code = key.codes[mTapCount]; |
| 806 | } |
| 807 | mKeyboardActionListener.onKey(code, codes); |
| 808 | mKeyboardActionListener.onRelease(code); |
| 809 | } |
| 810 | mLastSentIndex = index; |
| 811 | mLastTapTime = eventTime; |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | /** |
| 816 | * Handle multi-tap keys by producing the key label for the current multi-tap state. |
| 817 | */ |
| 818 | private CharSequence getPreviewText(Key key) { |
| 819 | if (mInMultiTap) { |
| 820 | // Multi-tap |
| 821 | mPreviewLabel.setLength(0); |
| 822 | mPreviewLabel.append((char) key.codes[mTapCount < 0 ? 0 : mTapCount]); |
| 823 | return adjustCase(mPreviewLabel); |
| 824 | } else { |
| 825 | return adjustCase(key.label); |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | private void showPreview(int keyIndex) { |
| 830 | int oldKeyIndex = mCurrentKeyIndex; |
| 831 | final PopupWindow previewPopup = mPreviewPopup; |
| 832 | |
| 833 | mCurrentKeyIndex = keyIndex; |
| 834 | // Release the old key and press the new key |
| 835 | final Key[] keys = mKeys; |
| 836 | if (oldKeyIndex != mCurrentKeyIndex) { |
| 837 | if (oldKeyIndex != NOT_A_KEY && keys.length > oldKeyIndex) { |
| 838 | keys[oldKeyIndex].onReleased(mCurrentKeyIndex == NOT_A_KEY); |
| 839 | invalidateKey(oldKeyIndex); |
| 840 | } |
| 841 | if (mCurrentKeyIndex != NOT_A_KEY && keys.length > mCurrentKeyIndex) { |
| 842 | keys[mCurrentKeyIndex].onPressed(); |
| 843 | invalidateKey(mCurrentKeyIndex); |
| 844 | } |
| 845 | } |
| 846 | // If key changed and preview is on ... |
| 847 | if (oldKeyIndex != mCurrentKeyIndex && mShowPreview) { |
| 848 | mHandler.removeMessages(MSG_SHOW_PREVIEW); |
| 849 | if (previewPopup.isShowing()) { |
| 850 | if (keyIndex == NOT_A_KEY) { |
| 851 | mHandler.sendMessageDelayed(mHandler |
| 852 | .obtainMessage(MSG_REMOVE_PREVIEW), |
| 853 | DELAY_AFTER_PREVIEW); |
| 854 | } |
| 855 | } |
| 856 | if (keyIndex != NOT_A_KEY) { |
| 857 | if (previewPopup.isShowing() && mPreviewText.getVisibility() == VISIBLE) { |
| 858 | // Show right away, if it's already visible and finger is moving around |
| 859 | showKey(keyIndex); |
| 860 | } else { |
| 861 | mHandler.sendMessageDelayed( |
| 862 | mHandler.obtainMessage(MSG_SHOW_PREVIEW, keyIndex, 0), |
| 863 | DELAY_BEFORE_PREVIEW); |
| 864 | } |
| 865 | } |
| 866 | } |
| 867 | } |
| 868 | |
| 869 | private void showKey(final int keyIndex) { |
| 870 | final PopupWindow previewPopup = mPreviewPopup; |
| 871 | final Key[] keys = mKeys; |
Amith Yamasani | ebe3d51 | 2009-09-17 11:27:14 -0700 | [diff] [blame] | 872 | if (keyIndex < 0 || keyIndex >= mKeys.length) return; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 873 | Key key = keys[keyIndex]; |
| 874 | if (key.icon != null) { |
| 875 | mPreviewText.setCompoundDrawables(null, null, null, |
| 876 | key.iconPreview != null ? key.iconPreview : key.icon); |
| 877 | mPreviewText.setText(null); |
| 878 | } else { |
| 879 | mPreviewText.setCompoundDrawables(null, null, null, null); |
| 880 | mPreviewText.setText(getPreviewText(key)); |
| 881 | if (key.label.length() > 1 && key.codes.length < 2) { |
Amith Yamasani | e403700 | 2009-07-23 17:38:15 -0700 | [diff] [blame] | 882 | mPreviewText.setTextSize(TypedValue.COMPLEX_UNIT_PX, mKeyTextSize); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 883 | mPreviewText.setTypeface(Typeface.DEFAULT_BOLD); |
| 884 | } else { |
Amith Yamasani | e403700 | 2009-07-23 17:38:15 -0700 | [diff] [blame] | 885 | mPreviewText.setTextSize(TypedValue.COMPLEX_UNIT_PX, mPreviewTextSizeLarge); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 886 | mPreviewText.setTypeface(Typeface.DEFAULT); |
| 887 | } |
| 888 | } |
| 889 | mPreviewText.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), |
| 890 | MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); |
| 891 | int popupWidth = Math.max(mPreviewText.getMeasuredWidth(), key.width |
| 892 | + mPreviewText.getPaddingLeft() + mPreviewText.getPaddingRight()); |
| 893 | final int popupHeight = mPreviewHeight; |
| 894 | LayoutParams lp = mPreviewText.getLayoutParams(); |
| 895 | if (lp != null) { |
| 896 | lp.width = popupWidth; |
| 897 | lp.height = popupHeight; |
| 898 | } |
| 899 | if (!mPreviewCentered) { |
| 900 | mPopupPreviewX = key.x - mPreviewText.getPaddingLeft() + mPaddingLeft; |
| 901 | mPopupPreviewY = key.y - popupHeight + mPreviewOffset; |
| 902 | } else { |
| 903 | // TODO: Fix this if centering is brought back |
| 904 | mPopupPreviewX = 160 - mPreviewText.getMeasuredWidth() / 2; |
| 905 | mPopupPreviewY = - mPreviewText.getMeasuredHeight(); |
| 906 | } |
| 907 | mHandler.removeMessages(MSG_REMOVE_PREVIEW); |
| 908 | if (mOffsetInWindow == null) { |
| 909 | mOffsetInWindow = new int[2]; |
| 910 | getLocationInWindow(mOffsetInWindow); |
| 911 | mOffsetInWindow[0] += mMiniKeyboardOffsetX; // Offset may be zero |
| 912 | mOffsetInWindow[1] += mMiniKeyboardOffsetY; // Offset may be zero |
Amith Yamasani | 42973a4 | 2010-03-19 17:21:44 -0700 | [diff] [blame] | 913 | int[] mWindowLocation = new int[2]; |
| 914 | getLocationOnScreen(mWindowLocation); |
| 915 | mWindowY = mWindowLocation[1]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 916 | } |
| 917 | // Set the preview background state |
| 918 | mPreviewText.getBackground().setState( |
| 919 | key.popupResId != 0 ? LONG_PRESSABLE_STATE_SET : EMPTY_STATE_SET); |
Amith Yamasani | 42973a4 | 2010-03-19 17:21:44 -0700 | [diff] [blame] | 920 | mPopupPreviewX += mOffsetInWindow[0]; |
| 921 | mPopupPreviewY += mOffsetInWindow[1]; |
| 922 | |
| 923 | // If the popup cannot be shown above the key, put it on the side |
| 924 | if (mPopupPreviewY + mWindowY < 0) { |
| 925 | // If the key you're pressing is on the left side of the keyboard, show the popup on |
| 926 | // the right, offset by enough to see at least one key to the left/right. |
| 927 | if (key.x + key.width <= getWidth() / 2) { |
| 928 | mPopupPreviewX += (int) (key.width * 2.5); |
| 929 | } else { |
| 930 | mPopupPreviewX -= (int) (key.width * 2.5); |
| 931 | } |
| 932 | mPopupPreviewY += popupHeight; |
| 933 | } |
| 934 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 935 | if (previewPopup.isShowing()) { |
Amith Yamasani | 42973a4 | 2010-03-19 17:21:44 -0700 | [diff] [blame] | 936 | previewPopup.update(mPopupPreviewX, mPopupPreviewY, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 937 | popupWidth, popupHeight); |
| 938 | } else { |
| 939 | previewPopup.setWidth(popupWidth); |
| 940 | previewPopup.setHeight(popupHeight); |
| 941 | previewPopup.showAtLocation(mPopupParent, Gravity.NO_GRAVITY, |
Amith Yamasani | 42973a4 | 2010-03-19 17:21:44 -0700 | [diff] [blame] | 942 | mPopupPreviewX, mPopupPreviewY); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 943 | } |
| 944 | mPreviewText.setVisibility(VISIBLE); |
| 945 | } |
| 946 | |
Amith Yamasani | f04da95 | 2009-05-06 15:46:00 -0700 | [diff] [blame] | 947 | /** |
| 948 | * Requests a redraw of the entire keyboard. Calling {@link #invalidate} is not sufficient |
| 949 | * because the keyboard renders the keys to an off-screen buffer and an invalidate() only |
| 950 | * draws the cached buffer. |
| 951 | * @see #invalidateKey(int) |
| 952 | */ |
| 953 | public void invalidateAllKeys() { |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 954 | mDirtyRect.union(0, 0, getWidth(), getHeight()); |
| 955 | mDrawPending = true; |
| 956 | invalidate(); |
| 957 | } |
Amith Yamasani | f04da95 | 2009-05-06 15:46:00 -0700 | [diff] [blame] | 958 | |
| 959 | /** |
| 960 | * Invalidates a key so that it will be redrawn on the next repaint. Use this method if only |
| 961 | * one key is changing it's content. Any changes that affect the position or size of the key |
| 962 | * may not be honored. |
| 963 | * @param keyIndex the index of the key in the attached {@link Keyboard}. |
| 964 | * @see #invalidateAllKeys |
| 965 | */ |
| 966 | public void invalidateKey(int keyIndex) { |
| 967 | if (mKeys == null) return; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 968 | if (keyIndex < 0 || keyIndex >= mKeys.length) { |
| 969 | return; |
| 970 | } |
| 971 | final Key key = mKeys[keyIndex]; |
| 972 | mInvalidatedKey = key; |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 973 | mDirtyRect.union(key.x + mPaddingLeft, key.y + mPaddingTop, |
| 974 | key.x + key.width + mPaddingLeft, key.y + key.height + mPaddingTop); |
| 975 | onBufferDraw(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 976 | invalidate(key.x + mPaddingLeft, key.y + mPaddingTop, |
| 977 | key.x + key.width + mPaddingLeft, key.y + key.height + mPaddingTop); |
| 978 | } |
| 979 | |
| 980 | private boolean openPopupIfRequired(MotionEvent me) { |
| 981 | // Check if we have a popup layout specified first. |
| 982 | if (mPopupLayout == 0) { |
| 983 | return false; |
| 984 | } |
| 985 | if (mCurrentKey < 0 || mCurrentKey >= mKeys.length) { |
| 986 | return false; |
| 987 | } |
| 988 | |
| 989 | Key popupKey = mKeys[mCurrentKey]; |
| 990 | boolean result = onLongPress(popupKey); |
| 991 | if (result) { |
| 992 | mAbortKey = true; |
| 993 | showPreview(NOT_A_KEY); |
| 994 | } |
| 995 | return result; |
| 996 | } |
| 997 | |
| 998 | /** |
| 999 | * Called when a key is long pressed. By default this will open any popup keyboard associated |
| 1000 | * with this key through the attributes popupLayout and popupCharacters. |
| 1001 | * @param popupKey the key that was long pressed |
| 1002 | * @return true if the long press is handled, false otherwise. Subclasses should call the |
| 1003 | * method on the base class if the subclass doesn't wish to handle the call. |
| 1004 | */ |
| 1005 | protected boolean onLongPress(Key popupKey) { |
| 1006 | int popupKeyboardId = popupKey.popupResId; |
| 1007 | |
| 1008 | if (popupKeyboardId != 0) { |
| 1009 | mMiniKeyboardContainer = mMiniKeyboardCache.get(popupKey); |
| 1010 | if (mMiniKeyboardContainer == null) { |
| 1011 | LayoutInflater inflater = (LayoutInflater) getContext().getSystemService( |
| 1012 | Context.LAYOUT_INFLATER_SERVICE); |
| 1013 | mMiniKeyboardContainer = inflater.inflate(mPopupLayout, null); |
| 1014 | mMiniKeyboard = (KeyboardView) mMiniKeyboardContainer.findViewById( |
| 1015 | com.android.internal.R.id.keyboardView); |
| 1016 | View closeButton = mMiniKeyboardContainer.findViewById( |
Dianne Hackborn | 88fb106 | 2009-03-27 14:59:22 -0700 | [diff] [blame] | 1017 | com.android.internal.R.id.closeButton); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1018 | if (closeButton != null) closeButton.setOnClickListener(this); |
| 1019 | mMiniKeyboard.setOnKeyboardActionListener(new OnKeyboardActionListener() { |
| 1020 | public void onKey(int primaryCode, int[] keyCodes) { |
| 1021 | mKeyboardActionListener.onKey(primaryCode, keyCodes); |
| 1022 | dismissPopupKeyboard(); |
| 1023 | } |
| 1024 | |
| 1025 | public void onText(CharSequence text) { |
| 1026 | mKeyboardActionListener.onText(text); |
| 1027 | dismissPopupKeyboard(); |
| 1028 | } |
| 1029 | |
| 1030 | public void swipeLeft() { } |
| 1031 | public void swipeRight() { } |
| 1032 | public void swipeUp() { } |
| 1033 | public void swipeDown() { } |
| 1034 | public void onPress(int primaryCode) { |
| 1035 | mKeyboardActionListener.onPress(primaryCode); |
| 1036 | } |
| 1037 | public void onRelease(int primaryCode) { |
| 1038 | mKeyboardActionListener.onRelease(primaryCode); |
| 1039 | } |
| 1040 | }); |
| 1041 | //mInputView.setSuggest(mSuggest); |
| 1042 | Keyboard keyboard; |
| 1043 | if (popupKey.popupCharacters != null) { |
| 1044 | keyboard = new Keyboard(getContext(), popupKeyboardId, |
| 1045 | popupKey.popupCharacters, -1, getPaddingLeft() + getPaddingRight()); |
| 1046 | } else { |
| 1047 | keyboard = new Keyboard(getContext(), popupKeyboardId); |
| 1048 | } |
| 1049 | mMiniKeyboard.setKeyboard(keyboard); |
| 1050 | mMiniKeyboard.setPopupParent(this); |
| 1051 | mMiniKeyboardContainer.measure( |
| 1052 | MeasureSpec.makeMeasureSpec(getWidth(), MeasureSpec.AT_MOST), |
| 1053 | MeasureSpec.makeMeasureSpec(getHeight(), MeasureSpec.AT_MOST)); |
| 1054 | |
| 1055 | mMiniKeyboardCache.put(popupKey, mMiniKeyboardContainer); |
| 1056 | } else { |
| 1057 | mMiniKeyboard = (KeyboardView) mMiniKeyboardContainer.findViewById( |
| 1058 | com.android.internal.R.id.keyboardView); |
| 1059 | } |
| 1060 | if (mWindowOffset == null) { |
| 1061 | mWindowOffset = new int[2]; |
| 1062 | getLocationInWindow(mWindowOffset); |
| 1063 | } |
| 1064 | mPopupX = popupKey.x + mPaddingLeft; |
| 1065 | mPopupY = popupKey.y + mPaddingTop; |
| 1066 | mPopupX = mPopupX + popupKey.width - mMiniKeyboardContainer.getMeasuredWidth(); |
| 1067 | mPopupY = mPopupY - mMiniKeyboardContainer.getMeasuredHeight(); |
| 1068 | final int x = mPopupX + mMiniKeyboardContainer.getPaddingRight() + mWindowOffset[0]; |
| 1069 | final int y = mPopupY + mMiniKeyboardContainer.getPaddingBottom() + mWindowOffset[1]; |
| 1070 | mMiniKeyboard.setPopupOffset(x < 0 ? 0 : x, y); |
| 1071 | mMiniKeyboard.setShifted(isShifted()); |
| 1072 | mPopupKeyboard.setContentView(mMiniKeyboardContainer); |
| 1073 | mPopupKeyboard.setWidth(mMiniKeyboardContainer.getMeasuredWidth()); |
| 1074 | mPopupKeyboard.setHeight(mMiniKeyboardContainer.getMeasuredHeight()); |
| 1075 | mPopupKeyboard.showAtLocation(this, Gravity.NO_GRAVITY, x, y); |
| 1076 | mMiniKeyboardOnScreen = true; |
| 1077 | //mMiniKeyboard.onTouchEvent(getTranslatedEvent(me)); |
Amith Yamasani | f04da95 | 2009-05-06 15:46:00 -0700 | [diff] [blame] | 1078 | invalidateAllKeys(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1079 | return true; |
| 1080 | } |
| 1081 | return false; |
| 1082 | } |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1083 | |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1084 | private long mOldEventTime; |
| 1085 | private boolean mUsedVelocity; |
| 1086 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1087 | @Override |
| 1088 | public boolean onTouchEvent(MotionEvent me) { |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1089 | // Convert multi-pointer up/down events to single up/down events to |
| 1090 | // deal with the typical multi-pointer behavior of two-thumb typing |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1091 | final int pointerCount = me.getPointerCount(); |
| 1092 | final int action = me.getAction(); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1093 | boolean result = false; |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1094 | final long now = me.getEventTime(); |
| 1095 | |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1096 | if (pointerCount != mOldPointerCount) { |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1097 | if (pointerCount == 1) { |
| 1098 | // Send a down event for the latest pointer |
| 1099 | MotionEvent down = MotionEvent.obtain(now, now, MotionEvent.ACTION_DOWN, |
| 1100 | me.getX(), me.getY(), me.getMetaState()); |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1101 | result = onModifiedTouchEvent(down, false); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1102 | down.recycle(); |
Amith Yamasani | 8b37eb0 | 2009-08-19 20:05:43 -0700 | [diff] [blame] | 1103 | // If it's an up action, then deliver the up as well. |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1104 | if (action == MotionEvent.ACTION_UP) { |
| 1105 | result = onModifiedTouchEvent(me, true); |
Amith Yamasani | 8b37eb0 | 2009-08-19 20:05:43 -0700 | [diff] [blame] | 1106 | } |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1107 | } else { |
| 1108 | // Send an up event for the last pointer |
| 1109 | MotionEvent up = MotionEvent.obtain(now, now, MotionEvent.ACTION_UP, |
| 1110 | mOldPointerX, mOldPointerY, me.getMetaState()); |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1111 | result = onModifiedTouchEvent(up, true); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1112 | up.recycle(); |
| 1113 | } |
| 1114 | } else { |
| 1115 | if (pointerCount == 1) { |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1116 | result = onModifiedTouchEvent(me, false); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1117 | mOldPointerX = me.getX(); |
| 1118 | mOldPointerY = me.getY(); |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1119 | } else { |
| 1120 | // Don't do anything when 2 pointers are down and moving. |
| 1121 | result = true; |
| 1122 | } |
| 1123 | } |
| 1124 | mOldPointerCount = pointerCount; |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1125 | |
Amith Yamasani | e877ec6 | 2009-08-05 21:12:07 -0700 | [diff] [blame] | 1126 | return result; |
| 1127 | } |
| 1128 | |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1129 | private boolean onModifiedTouchEvent(MotionEvent me, boolean possiblePoly) { |
Amith Yamasani | 678cdbe | 2009-10-27 11:45:08 -0700 | [diff] [blame] | 1130 | int touchX = (int) me.getX() - mPaddingLeft; |
Tadashi G. Takaoka | 0972d07 | 2010-07-30 15:18:56 -0700 | [diff] [blame] | 1131 | int touchY = (int) me.getY() - mPaddingTop; |
| 1132 | if (touchY >= -mVerticalCorrection) |
| 1133 | touchY += mVerticalCorrection; |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1134 | final int action = me.getAction(); |
| 1135 | final long eventTime = me.getEventTime(); |
| 1136 | mOldEventTime = eventTime; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1137 | int keyIndex = getKeyIndices(touchX, touchY, null); |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1138 | mPossiblePoly = possiblePoly; |
| 1139 | |
| 1140 | // Track the last few movements to look for spurious swipes. |
| 1141 | if (action == MotionEvent.ACTION_DOWN) mSwipeTracker.clear(); |
| 1142 | mSwipeTracker.addMovement(me); |
| 1143 | |
Amith Yamasani | 4d2c27b | 2010-01-05 14:06:18 -0800 | [diff] [blame] | 1144 | // Ignore all motion events until a DOWN. |
Amith Yamasani | 7aa936e | 2010-02-11 18:51:25 -0800 | [diff] [blame] | 1145 | if (mAbortKey |
| 1146 | && action != MotionEvent.ACTION_DOWN && action != MotionEvent.ACTION_CANCEL) { |
Amith Yamasani | 4d2c27b | 2010-01-05 14:06:18 -0800 | [diff] [blame] | 1147 | return true; |
| 1148 | } |
| 1149 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1150 | if (mGestureDetector.onTouchEvent(me)) { |
| 1151 | showPreview(NOT_A_KEY); |
| 1152 | mHandler.removeMessages(MSG_REPEAT); |
Amith Yamasani | 8b37eb0 | 2009-08-19 20:05:43 -0700 | [diff] [blame] | 1153 | mHandler.removeMessages(MSG_LONGPRESS); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1154 | return true; |
| 1155 | } |
| 1156 | |
| 1157 | // Needs to be called after the gesture detector gets a turn, as it may have |
| 1158 | // displayed the mini keyboard |
Amith Yamasani | 0743a38 | 2009-12-08 14:18:19 -0800 | [diff] [blame] | 1159 | if (mMiniKeyboardOnScreen && action != MotionEvent.ACTION_CANCEL) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1160 | return true; |
| 1161 | } |
| 1162 | |
| 1163 | switch (action) { |
| 1164 | case MotionEvent.ACTION_DOWN: |
| 1165 | mAbortKey = false; |
| 1166 | mStartX = touchX; |
| 1167 | mStartY = touchY; |
| 1168 | mLastCodeX = touchX; |
| 1169 | mLastCodeY = touchY; |
| 1170 | mLastKeyTime = 0; |
| 1171 | mCurrentKeyTime = 0; |
| 1172 | mLastKey = NOT_A_KEY; |
| 1173 | mCurrentKey = keyIndex; |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1174 | mDownKey = keyIndex; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1175 | mDownTime = me.getEventTime(); |
| 1176 | mLastMoveTime = mDownTime; |
| 1177 | checkMultiTap(eventTime, keyIndex); |
| 1178 | mKeyboardActionListener.onPress(keyIndex != NOT_A_KEY ? |
| 1179 | mKeys[keyIndex].codes[0] : 0); |
| 1180 | if (mCurrentKey >= 0 && mKeys[mCurrentKey].repeatable) { |
| 1181 | mRepeatKeyIndex = mCurrentKey; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1182 | Message msg = mHandler.obtainMessage(MSG_REPEAT); |
| 1183 | mHandler.sendMessageDelayed(msg, REPEAT_START_DELAY); |
Amith Yamasani | 4d2c27b | 2010-01-05 14:06:18 -0800 | [diff] [blame] | 1184 | repeatKey(); |
| 1185 | // Delivering the key could have caused an abort |
| 1186 | if (mAbortKey) { |
| 1187 | mRepeatKeyIndex = NOT_A_KEY; |
| 1188 | break; |
| 1189 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1190 | } |
| 1191 | if (mCurrentKey != NOT_A_KEY) { |
| 1192 | Message msg = mHandler.obtainMessage(MSG_LONGPRESS, me); |
| 1193 | mHandler.sendMessageDelayed(msg, LONGPRESS_TIMEOUT); |
| 1194 | } |
| 1195 | showPreview(keyIndex); |
| 1196 | break; |
| 1197 | |
| 1198 | case MotionEvent.ACTION_MOVE: |
| 1199 | boolean continueLongPress = false; |
| 1200 | if (keyIndex != NOT_A_KEY) { |
| 1201 | if (mCurrentKey == NOT_A_KEY) { |
| 1202 | mCurrentKey = keyIndex; |
| 1203 | mCurrentKeyTime = eventTime - mDownTime; |
| 1204 | } else { |
| 1205 | if (keyIndex == mCurrentKey) { |
| 1206 | mCurrentKeyTime += eventTime - mLastMoveTime; |
| 1207 | continueLongPress = true; |
Amith Yamasani | 8b37eb0 | 2009-08-19 20:05:43 -0700 | [diff] [blame] | 1208 | } else if (mRepeatKeyIndex == NOT_A_KEY) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1209 | resetMultiTap(); |
| 1210 | mLastKey = mCurrentKey; |
| 1211 | mLastCodeX = mLastX; |
| 1212 | mLastCodeY = mLastY; |
| 1213 | mLastKeyTime = |
| 1214 | mCurrentKeyTime + eventTime - mLastMoveTime; |
| 1215 | mCurrentKey = keyIndex; |
| 1216 | mCurrentKeyTime = 0; |
| 1217 | } |
| 1218 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1219 | } |
| 1220 | if (!continueLongPress) { |
| 1221 | // Cancel old longpress |
| 1222 | mHandler.removeMessages(MSG_LONGPRESS); |
| 1223 | // Start new longpress if key has changed |
| 1224 | if (keyIndex != NOT_A_KEY) { |
| 1225 | Message msg = mHandler.obtainMessage(MSG_LONGPRESS, me); |
| 1226 | mHandler.sendMessageDelayed(msg, LONGPRESS_TIMEOUT); |
| 1227 | } |
| 1228 | } |
Amith Yamasani | 8b37eb0 | 2009-08-19 20:05:43 -0700 | [diff] [blame] | 1229 | showPreview(mCurrentKey); |
Amith Yamasani | 7aa936e | 2010-02-11 18:51:25 -0800 | [diff] [blame] | 1230 | mLastMoveTime = eventTime; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1231 | break; |
| 1232 | |
| 1233 | case MotionEvent.ACTION_UP: |
Amith Yamasani | ebe3d51 | 2009-09-17 11:27:14 -0700 | [diff] [blame] | 1234 | removeMessages(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1235 | if (keyIndex == mCurrentKey) { |
| 1236 | mCurrentKeyTime += eventTime - mLastMoveTime; |
| 1237 | } else { |
| 1238 | resetMultiTap(); |
| 1239 | mLastKey = mCurrentKey; |
| 1240 | mLastKeyTime = mCurrentKeyTime + eventTime - mLastMoveTime; |
| 1241 | mCurrentKey = keyIndex; |
| 1242 | mCurrentKeyTime = 0; |
| 1243 | } |
Amith Yamasani | 7aa936e | 2010-02-11 18:51:25 -0800 | [diff] [blame] | 1244 | if (mCurrentKeyTime < mLastKeyTime && mCurrentKeyTime < DEBOUNCE_TIME |
| 1245 | && mLastKey != NOT_A_KEY) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1246 | mCurrentKey = mLastKey; |
| 1247 | touchX = mLastCodeX; |
| 1248 | touchY = mLastCodeY; |
| 1249 | } |
| 1250 | showPreview(NOT_A_KEY); |
| 1251 | Arrays.fill(mKeyIndices, NOT_A_KEY); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1252 | // If we're not on a repeating key (which sends on a DOWN event) |
| 1253 | if (mRepeatKeyIndex == NOT_A_KEY && !mMiniKeyboardOnScreen && !mAbortKey) { |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1254 | detectAndSendKey(mCurrentKey, touchX, touchY, eventTime); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1255 | } |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 1256 | invalidateKey(keyIndex); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1257 | mRepeatKeyIndex = NOT_A_KEY; |
| 1258 | break; |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1259 | case MotionEvent.ACTION_CANCEL: |
| 1260 | removeMessages(); |
Amith Yamasani | 0743a38 | 2009-12-08 14:18:19 -0800 | [diff] [blame] | 1261 | dismissPopupKeyboard(); |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1262 | mAbortKey = true; |
| 1263 | showPreview(NOT_A_KEY); |
| 1264 | invalidateKey(mCurrentKey); |
| 1265 | break; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1266 | } |
| 1267 | mLastX = touchX; |
| 1268 | mLastY = touchY; |
| 1269 | return true; |
| 1270 | } |
| 1271 | |
| 1272 | private boolean repeatKey() { |
| 1273 | Key key = mKeys[mRepeatKeyIndex]; |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1274 | detectAndSendKey(mCurrentKey, key.x, key.y, mLastTapTime); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1275 | return true; |
| 1276 | } |
| 1277 | |
| 1278 | protected void swipeRight() { |
| 1279 | mKeyboardActionListener.swipeRight(); |
| 1280 | } |
| 1281 | |
| 1282 | protected void swipeLeft() { |
| 1283 | mKeyboardActionListener.swipeLeft(); |
| 1284 | } |
| 1285 | |
| 1286 | protected void swipeUp() { |
| 1287 | mKeyboardActionListener.swipeUp(); |
| 1288 | } |
| 1289 | |
| 1290 | protected void swipeDown() { |
| 1291 | mKeyboardActionListener.swipeDown(); |
| 1292 | } |
| 1293 | |
| 1294 | public void closing() { |
| 1295 | if (mPreviewPopup.isShowing()) { |
| 1296 | mPreviewPopup.dismiss(); |
| 1297 | } |
Amith Yamasani | ebe3d51 | 2009-09-17 11:27:14 -0700 | [diff] [blame] | 1298 | removeMessages(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1299 | |
| 1300 | dismissPopupKeyboard(); |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 1301 | mBuffer = null; |
| 1302 | mCanvas = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1303 | mMiniKeyboardCache.clear(); |
| 1304 | } |
Amith Yamasani | ebe3d51 | 2009-09-17 11:27:14 -0700 | [diff] [blame] | 1305 | |
| 1306 | private void removeMessages() { |
| 1307 | mHandler.removeMessages(MSG_REPEAT); |
| 1308 | mHandler.removeMessages(MSG_LONGPRESS); |
| 1309 | mHandler.removeMessages(MSG_SHOW_PREVIEW); |
| 1310 | } |
| 1311 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1312 | @Override |
| 1313 | public void onDetachedFromWindow() { |
| 1314 | super.onDetachedFromWindow(); |
| 1315 | closing(); |
| 1316 | } |
| 1317 | |
| 1318 | private void dismissPopupKeyboard() { |
| 1319 | if (mPopupKeyboard.isShowing()) { |
| 1320 | mPopupKeyboard.dismiss(); |
| 1321 | mMiniKeyboardOnScreen = false; |
Amith Yamasani | f04da95 | 2009-05-06 15:46:00 -0700 | [diff] [blame] | 1322 | invalidateAllKeys(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1323 | } |
| 1324 | } |
The Android Open Source Project | ba87e3e | 2009-03-13 13:04:22 -0700 | [diff] [blame] | 1325 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1326 | public boolean handleBack() { |
| 1327 | if (mPopupKeyboard.isShowing()) { |
| 1328 | dismissPopupKeyboard(); |
| 1329 | return true; |
| 1330 | } |
| 1331 | return false; |
| 1332 | } |
| 1333 | |
| 1334 | private void resetMultiTap() { |
| 1335 | mLastSentIndex = NOT_A_KEY; |
| 1336 | mTapCount = 0; |
| 1337 | mLastTapTime = -1; |
| 1338 | mInMultiTap = false; |
| 1339 | } |
| 1340 | |
| 1341 | private void checkMultiTap(long eventTime, int keyIndex) { |
| 1342 | if (keyIndex == NOT_A_KEY) return; |
| 1343 | Key key = mKeys[keyIndex]; |
| 1344 | if (key.codes.length > 1) { |
| 1345 | mInMultiTap = true; |
| 1346 | if (eventTime < mLastTapTime + MULTITAP_INTERVAL |
| 1347 | && keyIndex == mLastSentIndex) { |
| 1348 | mTapCount = (mTapCount + 1) % key.codes.length; |
| 1349 | return; |
| 1350 | } else { |
| 1351 | mTapCount = -1; |
| 1352 | return; |
| 1353 | } |
| 1354 | } |
| 1355 | if (eventTime > mLastTapTime + MULTITAP_INTERVAL || keyIndex != mLastSentIndex) { |
| 1356 | resetMultiTap(); |
| 1357 | } |
| 1358 | } |
Amith Yamasani | aea1b3b | 2009-10-21 16:53:31 -0700 | [diff] [blame] | 1359 | |
| 1360 | private static class SwipeTracker { |
| 1361 | |
| 1362 | static final int NUM_PAST = 4; |
| 1363 | static final int LONGEST_PAST_TIME = 200; |
| 1364 | |
| 1365 | final float mPastX[] = new float[NUM_PAST]; |
| 1366 | final float mPastY[] = new float[NUM_PAST]; |
| 1367 | final long mPastTime[] = new long[NUM_PAST]; |
| 1368 | |
| 1369 | float mYVelocity; |
| 1370 | float mXVelocity; |
| 1371 | |
| 1372 | public void clear() { |
| 1373 | mPastTime[0] = 0; |
| 1374 | } |
| 1375 | |
| 1376 | public void addMovement(MotionEvent ev) { |
| 1377 | long time = ev.getEventTime(); |
| 1378 | final int N = ev.getHistorySize(); |
| 1379 | for (int i=0; i<N; i++) { |
| 1380 | addPoint(ev.getHistoricalX(i), ev.getHistoricalY(i), |
| 1381 | ev.getHistoricalEventTime(i)); |
| 1382 | } |
| 1383 | addPoint(ev.getX(), ev.getY(), time); |
| 1384 | } |
| 1385 | |
| 1386 | private void addPoint(float x, float y, long time) { |
| 1387 | int drop = -1; |
| 1388 | int i; |
| 1389 | final long[] pastTime = mPastTime; |
| 1390 | for (i=0; i<NUM_PAST; i++) { |
| 1391 | if (pastTime[i] == 0) { |
| 1392 | break; |
| 1393 | } else if (pastTime[i] < time-LONGEST_PAST_TIME) { |
| 1394 | drop = i; |
| 1395 | } |
| 1396 | } |
| 1397 | if (i == NUM_PAST && drop < 0) { |
| 1398 | drop = 0; |
| 1399 | } |
| 1400 | if (drop == i) drop--; |
| 1401 | final float[] pastX = mPastX; |
| 1402 | final float[] pastY = mPastY; |
| 1403 | if (drop >= 0) { |
| 1404 | final int start = drop+1; |
| 1405 | final int count = NUM_PAST-drop-1; |
| 1406 | System.arraycopy(pastX, start, pastX, 0, count); |
| 1407 | System.arraycopy(pastY, start, pastY, 0, count); |
| 1408 | System.arraycopy(pastTime, start, pastTime, 0, count); |
| 1409 | i -= (drop+1); |
| 1410 | } |
| 1411 | pastX[i] = x; |
| 1412 | pastY[i] = y; |
| 1413 | pastTime[i] = time; |
| 1414 | i++; |
| 1415 | if (i < NUM_PAST) { |
| 1416 | pastTime[i] = 0; |
| 1417 | } |
| 1418 | } |
| 1419 | |
| 1420 | public void computeCurrentVelocity(int units) { |
| 1421 | computeCurrentVelocity(units, Float.MAX_VALUE); |
| 1422 | } |
| 1423 | |
| 1424 | public void computeCurrentVelocity(int units, float maxVelocity) { |
| 1425 | final float[] pastX = mPastX; |
| 1426 | final float[] pastY = mPastY; |
| 1427 | final long[] pastTime = mPastTime; |
| 1428 | |
| 1429 | final float oldestX = pastX[0]; |
| 1430 | final float oldestY = pastY[0]; |
| 1431 | final long oldestTime = pastTime[0]; |
| 1432 | float accumX = 0; |
| 1433 | float accumY = 0; |
| 1434 | int N=0; |
| 1435 | while (N < NUM_PAST) { |
| 1436 | if (pastTime[N] == 0) { |
| 1437 | break; |
| 1438 | } |
| 1439 | N++; |
| 1440 | } |
| 1441 | |
| 1442 | for (int i=1; i < N; i++) { |
| 1443 | final int dur = (int)(pastTime[i] - oldestTime); |
| 1444 | if (dur == 0) continue; |
| 1445 | float dist = pastX[i] - oldestX; |
| 1446 | float vel = (dist/dur) * units; // pixels/frame. |
| 1447 | if (accumX == 0) accumX = vel; |
| 1448 | else accumX = (accumX + vel) * .5f; |
| 1449 | |
| 1450 | dist = pastY[i] - oldestY; |
| 1451 | vel = (dist/dur) * units; // pixels/frame. |
| 1452 | if (accumY == 0) accumY = vel; |
| 1453 | else accumY = (accumY + vel) * .5f; |
| 1454 | } |
| 1455 | mXVelocity = accumX < 0.0f ? Math.max(accumX, -maxVelocity) |
| 1456 | : Math.min(accumX, maxVelocity); |
| 1457 | mYVelocity = accumY < 0.0f ? Math.max(accumY, -maxVelocity) |
| 1458 | : Math.min(accumY, maxVelocity); |
| 1459 | } |
| 1460 | |
| 1461 | public float getXVelocity() { |
| 1462 | return mXVelocity; |
| 1463 | } |
| 1464 | |
| 1465 | public float getYVelocity() { |
| 1466 | return mYVelocity; |
| 1467 | } |
| 1468 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1469 | } |