Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 1 | /* |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 2 | * Copyright (C) 2009 The Android Open Source Project |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of 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, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 17 | package android.gesture; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 18 | |
| 19 | import android.content.Context; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 20 | import android.content.res.TypedArray; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 21 | import android.graphics.Canvas; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 22 | import android.graphics.Paint; |
| 23 | import android.graphics.Path; |
| 24 | import android.graphics.Rect; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 25 | import android.graphics.RectF; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 26 | import android.util.AttributeSet; |
| 27 | import android.view.MotionEvent; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 28 | import android.view.animation.AnimationUtils; |
| 29 | import android.view.animation.AccelerateDecelerateInterpolator; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 30 | import android.widget.FrameLayout; |
| 31 | import android.os.SystemClock; |
Romain Guy | 51099c5 | 2009-09-11 14:29:15 -0700 | [diff] [blame] | 32 | import android.annotation.Widget; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 33 | import com.android.internal.R; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 34 | |
| 35 | import java.util.ArrayList; |
| 36 | |
| 37 | /** |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 38 | * A transparent overlay for gesture input that can be placed on top of other |
| 39 | * widgets or contain other widgets. |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 40 | * |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 41 | * @attr ref android.R.styleable#GestureOverlayView_eventsInterceptionEnabled |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 42 | * @attr ref android.R.styleable#GestureOverlayView_fadeDuration |
| 43 | * @attr ref android.R.styleable#GestureOverlayView_fadeOffset |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 44 | * @attr ref android.R.styleable#GestureOverlayView_fadeEnabled |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 45 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeWidth |
| 46 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeAngleThreshold |
| 47 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeLengthThreshold |
| 48 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeSquarenessThreshold |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 49 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeType |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 50 | * @attr ref android.R.styleable#GestureOverlayView_gestureColor |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 51 | * @attr ref android.R.styleable#GestureOverlayView_orientation |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 52 | * @attr ref android.R.styleable#GestureOverlayView_uncertainGestureColor |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 53 | */ |
Romain Guy | 51099c5 | 2009-09-11 14:29:15 -0700 | [diff] [blame] | 54 | @Widget |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 55 | public class GestureOverlayView extends FrameLayout { |
| 56 | public static final int GESTURE_STROKE_TYPE_SINGLE = 0; |
| 57 | public static final int GESTURE_STROKE_TYPE_MULTIPLE = 1; |
| 58 | |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 59 | public static final int ORIENTATION_HORIZONTAL = 0; |
| 60 | public static final int ORIENTATION_VERTICAL = 1; |
| 61 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 62 | private static final int FADE_ANIMATION_RATE = 16; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 63 | private static final boolean GESTURE_RENDERING_ANTIALIAS = true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 64 | private static final boolean DITHER_FLAG = true; |
| 65 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 66 | private final Paint mGesturePaint = new Paint(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 67 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 68 | private long mFadeDuration = 150; |
| 69 | private long mFadeOffset = 420; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 70 | private long mFadingStart; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 71 | private boolean mFadingHasStarted; |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 72 | private boolean mFadeEnabled = true; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 73 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 74 | private int mCurrentColor; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 75 | private int mCertainGestureColor = 0xFFFFFF00; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 76 | private int mUncertainGestureColor = 0x48FFFF00; |
| 77 | private float mGestureStrokeWidth = 12.0f; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 78 | private int mInvalidateExtraBorder = 10; |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 79 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 80 | private int mGestureStrokeType = GESTURE_STROKE_TYPE_SINGLE; |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 81 | private float mGestureStrokeLengthThreshold = 50.0f; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 82 | private float mGestureStrokeSquarenessTreshold = 0.275f; |
| 83 | private float mGestureStrokeAngleThreshold = 40.0f; |
| 84 | |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 85 | private int mOrientation = ORIENTATION_VERTICAL; |
| 86 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 87 | private final Rect mInvalidRect = new Rect(); |
| 88 | private final Path mPath = new Path(); |
Romain Guy | e705f2c | 2009-06-16 17:07:21 -0700 | [diff] [blame] | 89 | private boolean mGestureVisible = true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 90 | |
| 91 | private float mX; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 92 | private float mY; |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 93 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 94 | private float mCurveEndX; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 95 | private float mCurveEndY; |
| 96 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 97 | private float mTotalLength; |
| 98 | private boolean mIsGesturing = false; |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 99 | private boolean mPreviousWasGesturing = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 100 | private boolean mInterceptEvents = true; |
| 101 | private boolean mIsListeningForGestures; |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 102 | private boolean mResetGesture; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 103 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 104 | // current gesture |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 105 | private Gesture mCurrentGesture; |
| 106 | private final ArrayList<GesturePoint> mStrokeBuffer = new ArrayList<GesturePoint>(100); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 107 | |
Romain Guy | c534727 | 2009-05-20 10:37:13 -0700 | [diff] [blame] | 108 | // TODO: Make this a list of WeakReferences |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 109 | private final ArrayList<OnGestureListener> mOnGestureListeners = |
| 110 | new ArrayList<OnGestureListener>(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 111 | // TODO: Make this a list of WeakReferences |
| 112 | private final ArrayList<OnGesturePerformedListener> mOnGesturePerformedListeners = |
| 113 | new ArrayList<OnGesturePerformedListener>(); |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 114 | // TODO: Make this a list of WeakReferences |
| 115 | private final ArrayList<OnGesturingListener> mOnGesturingListeners = |
| 116 | new ArrayList<OnGesturingListener>(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 117 | |
| 118 | private boolean mHandleGestureActions; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 119 | |
| 120 | // fading out effect |
| 121 | private boolean mIsFadingOut = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 122 | private float mFadingAlpha = 1.0f; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 123 | private final AccelerateDecelerateInterpolator mInterpolator = |
| 124 | new AccelerateDecelerateInterpolator(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 125 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 126 | private final FadeOutRunnable mFadingOut = new FadeOutRunnable(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 127 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 128 | public GestureOverlayView(Context context) { |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 129 | super(context); |
| 130 | init(); |
| 131 | } |
| 132 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 133 | public GestureOverlayView(Context context, AttributeSet attrs) { |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 134 | this(context, attrs, com.android.internal.R.attr.gestureOverlayViewStyle); |
| 135 | } |
| 136 | |
Alan Viverette | 617feb9 | 2013-09-09 18:09:13 -0700 | [diff] [blame] | 137 | public GestureOverlayView(Context context, AttributeSet attrs, int defStyleAttr) { |
| 138 | this(context, attrs, defStyleAttr, 0); |
| 139 | } |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 140 | |
Alan Viverette | 617feb9 | 2013-09-09 18:09:13 -0700 | [diff] [blame] | 141 | public GestureOverlayView( |
| 142 | Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| 143 | super(context, attrs, defStyleAttr, defStyleRes); |
| 144 | |
| 145 | final TypedArray a = context.obtainStyledAttributes( |
| 146 | attrs, R.styleable.GestureOverlayView, defStyleAttr, defStyleRes); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 147 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 148 | mGestureStrokeWidth = a.getFloat(R.styleable.GestureOverlayView_gestureStrokeWidth, |
| 149 | mGestureStrokeWidth); |
| 150 | mInvalidateExtraBorder = Math.max(1, ((int) mGestureStrokeWidth) - 1); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 151 | mCertainGestureColor = a.getColor(R.styleable.GestureOverlayView_gestureColor, |
| 152 | mCertainGestureColor); |
| 153 | mUncertainGestureColor = a.getColor(R.styleable.GestureOverlayView_uncertainGestureColor, |
| 154 | mUncertainGestureColor); |
| 155 | mFadeDuration = a.getInt(R.styleable.GestureOverlayView_fadeDuration, (int) mFadeDuration); |
| 156 | mFadeOffset = a.getInt(R.styleable.GestureOverlayView_fadeOffset, (int) mFadeOffset); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 157 | mGestureStrokeType = a.getInt(R.styleable.GestureOverlayView_gestureStrokeType, |
| 158 | mGestureStrokeType); |
| 159 | mGestureStrokeLengthThreshold = a.getFloat( |
| 160 | R.styleable.GestureOverlayView_gestureStrokeLengthThreshold, |
| 161 | mGestureStrokeLengthThreshold); |
| 162 | mGestureStrokeAngleThreshold = a.getFloat( |
| 163 | R.styleable.GestureOverlayView_gestureStrokeAngleThreshold, |
| 164 | mGestureStrokeAngleThreshold); |
| 165 | mGestureStrokeSquarenessTreshold = a.getFloat( |
| 166 | R.styleable.GestureOverlayView_gestureStrokeSquarenessThreshold, |
| 167 | mGestureStrokeSquarenessTreshold); |
| 168 | mInterceptEvents = a.getBoolean(R.styleable.GestureOverlayView_eventsInterceptionEnabled, |
| 169 | mInterceptEvents); |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 170 | mFadeEnabled = a.getBoolean(R.styleable.GestureOverlayView_fadeEnabled, |
| 171 | mFadeEnabled); |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 172 | mOrientation = a.getInt(R.styleable.GestureOverlayView_orientation, mOrientation); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 173 | |
| 174 | a.recycle(); |
| 175 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 176 | init(); |
| 177 | } |
| 178 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 179 | private void init() { |
| 180 | setWillNotDraw(false); |
| 181 | |
| 182 | final Paint gesturePaint = mGesturePaint; |
| 183 | gesturePaint.setAntiAlias(GESTURE_RENDERING_ANTIALIAS); |
| 184 | gesturePaint.setColor(mCertainGestureColor); |
| 185 | gesturePaint.setStyle(Paint.Style.STROKE); |
| 186 | gesturePaint.setStrokeJoin(Paint.Join.ROUND); |
| 187 | gesturePaint.setStrokeCap(Paint.Cap.ROUND); |
| 188 | gesturePaint.setStrokeWidth(mGestureStrokeWidth); |
| 189 | gesturePaint.setDither(DITHER_FLAG); |
| 190 | |
| 191 | mCurrentColor = mCertainGestureColor; |
| 192 | setPaintAlpha(255); |
| 193 | } |
| 194 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 195 | public ArrayList<GesturePoint> getCurrentStroke() { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 196 | return mStrokeBuffer; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 197 | } |
| 198 | |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 199 | public int getOrientation() { |
| 200 | return mOrientation; |
| 201 | } |
| 202 | |
| 203 | public void setOrientation(int orientation) { |
| 204 | mOrientation = orientation; |
| 205 | } |
| 206 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 207 | public void setGestureColor(int color) { |
| 208 | mCertainGestureColor = color; |
| 209 | } |
| 210 | |
| 211 | public void setUncertainGestureColor(int color) { |
| 212 | mUncertainGestureColor = color; |
| 213 | } |
| 214 | |
| 215 | public int getUncertainGestureColor() { |
| 216 | return mUncertainGestureColor; |
| 217 | } |
| 218 | |
| 219 | public int getGestureColor() { |
| 220 | return mCertainGestureColor; |
| 221 | } |
| 222 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 223 | public float getGestureStrokeWidth() { |
| 224 | return mGestureStrokeWidth; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 225 | } |
| 226 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 227 | public void setGestureStrokeWidth(float gestureStrokeWidth) { |
| 228 | mGestureStrokeWidth = gestureStrokeWidth; |
| 229 | mInvalidateExtraBorder = Math.max(1, ((int) gestureStrokeWidth) - 1); |
| 230 | mGesturePaint.setStrokeWidth(gestureStrokeWidth); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 231 | } |
| 232 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 233 | public int getGestureStrokeType() { |
| 234 | return mGestureStrokeType; |
| 235 | } |
| 236 | |
| 237 | public void setGestureStrokeType(int gestureStrokeType) { |
| 238 | mGestureStrokeType = gestureStrokeType; |
| 239 | } |
| 240 | |
| 241 | public float getGestureStrokeLengthThreshold() { |
| 242 | return mGestureStrokeLengthThreshold; |
| 243 | } |
| 244 | |
| 245 | public void setGestureStrokeLengthThreshold(float gestureStrokeLengthThreshold) { |
| 246 | mGestureStrokeLengthThreshold = gestureStrokeLengthThreshold; |
| 247 | } |
| 248 | |
| 249 | public float getGestureStrokeSquarenessTreshold() { |
| 250 | return mGestureStrokeSquarenessTreshold; |
| 251 | } |
| 252 | |
| 253 | public void setGestureStrokeSquarenessTreshold(float gestureStrokeSquarenessTreshold) { |
| 254 | mGestureStrokeSquarenessTreshold = gestureStrokeSquarenessTreshold; |
| 255 | } |
| 256 | |
| 257 | public float getGestureStrokeAngleThreshold() { |
| 258 | return mGestureStrokeAngleThreshold; |
| 259 | } |
| 260 | |
| 261 | public void setGestureStrokeAngleThreshold(float gestureStrokeAngleThreshold) { |
| 262 | mGestureStrokeAngleThreshold = gestureStrokeAngleThreshold; |
| 263 | } |
| 264 | |
| 265 | public boolean isEventsInterceptionEnabled() { |
| 266 | return mInterceptEvents; |
| 267 | } |
| 268 | |
| 269 | public void setEventsInterceptionEnabled(boolean enabled) { |
| 270 | mInterceptEvents = enabled; |
| 271 | } |
| 272 | |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 273 | public boolean isFadeEnabled() { |
| 274 | return mFadeEnabled; |
| 275 | } |
| 276 | |
| 277 | public void setFadeEnabled(boolean fadeEnabled) { |
| 278 | mFadeEnabled = fadeEnabled; |
| 279 | } |
| 280 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 281 | public Gesture getGesture() { |
| 282 | return mCurrentGesture; |
| 283 | } |
| 284 | |
| 285 | public void setGesture(Gesture gesture) { |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 286 | if (mCurrentGesture != null) { |
| 287 | clear(false); |
| 288 | } |
| 289 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 290 | setCurrentColor(mCertainGestureColor); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 291 | mCurrentGesture = gesture; |
| 292 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 293 | final Path path = mCurrentGesture.toPath(); |
| 294 | final RectF bounds = new RectF(); |
| 295 | path.computeBounds(bounds, true); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 296 | |
Romain Guy | cfbe8cf | 2009-06-10 01:21:20 -0700 | [diff] [blame] | 297 | // TODO: The path should also be scaled to fit inside this view |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 298 | mPath.rewind(); |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 299 | mPath.addPath(path, -bounds.left + (getWidth() - bounds.width()) / 2.0f, |
| 300 | -bounds.top + (getHeight() - bounds.height()) / 2.0f); |
| 301 | |
| 302 | mResetGesture = true; |
Romain Guy | c534727 | 2009-05-20 10:37:13 -0700 | [diff] [blame] | 303 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 304 | invalidate(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 305 | } |
| 306 | |
Romain Guy | b973eef | 2009-06-16 15:53:27 -0700 | [diff] [blame] | 307 | public Path getGesturePath() { |
| 308 | return mPath; |
| 309 | } |
| 310 | |
| 311 | public Path getGesturePath(Path path) { |
| 312 | path.set(mPath); |
| 313 | return path; |
| 314 | } |
| 315 | |
| 316 | public boolean isGestureVisible() { |
| 317 | return mGestureVisible; |
| 318 | } |
| 319 | |
| 320 | public void setGestureVisible(boolean visible) { |
| 321 | mGestureVisible = visible; |
| 322 | } |
| 323 | |
| 324 | public long getFadeOffset() { |
| 325 | return mFadeOffset; |
| 326 | } |
| 327 | |
| 328 | public void setFadeOffset(long fadeOffset) { |
| 329 | mFadeOffset = fadeOffset; |
| 330 | } |
| 331 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 332 | public void addOnGestureListener(OnGestureListener listener) { |
| 333 | mOnGestureListeners.add(listener); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 334 | } |
| 335 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 336 | public void removeOnGestureListener(OnGestureListener listener) { |
| 337 | mOnGestureListeners.remove(listener); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 338 | } |
| 339 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 340 | public void removeAllOnGestureListeners() { |
| 341 | mOnGestureListeners.clear(); |
| 342 | } |
| 343 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 344 | public void addOnGesturePerformedListener(OnGesturePerformedListener listener) { |
| 345 | mOnGesturePerformedListeners.add(listener); |
| 346 | if (mOnGesturePerformedListeners.size() > 0) { |
| 347 | mHandleGestureActions = true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 348 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 349 | } |
| 350 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 351 | public void removeOnGesturePerformedListener(OnGesturePerformedListener listener) { |
| 352 | mOnGesturePerformedListeners.remove(listener); |
| 353 | if (mOnGesturePerformedListeners.size() <= 0) { |
| 354 | mHandleGestureActions = false; |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | public void removeAllOnGesturePerformedListeners() { |
| 359 | mOnGesturePerformedListeners.clear(); |
| 360 | mHandleGestureActions = false; |
| 361 | } |
| 362 | |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 363 | public void addOnGesturingListener(OnGesturingListener listener) { |
| 364 | mOnGesturingListeners.add(listener); |
| 365 | } |
| 366 | |
| 367 | public void removeOnGesturingListener(OnGesturingListener listener) { |
| 368 | mOnGesturingListeners.remove(listener); |
| 369 | } |
| 370 | |
| 371 | public void removeAllOnGesturingListeners() { |
| 372 | mOnGesturingListeners.clear(); |
| 373 | } |
| 374 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 375 | public boolean isGesturing() { |
| 376 | return mIsGesturing; |
| 377 | } |
| 378 | |
| 379 | private void setCurrentColor(int color) { |
| 380 | mCurrentColor = color; |
| 381 | if (mFadingHasStarted) { |
| 382 | setPaintAlpha((int) (255 * mFadingAlpha)); |
| 383 | } else { |
| 384 | setPaintAlpha(255); |
| 385 | } |
| 386 | invalidate(); |
| 387 | } |
| 388 | |
Romain Guy | 27a2b50 | 2009-06-09 04:36:14 -0700 | [diff] [blame] | 389 | /** |
| 390 | * @hide |
| 391 | */ |
| 392 | public Paint getGesturePaint() { |
| 393 | return mGesturePaint; |
| 394 | } |
| 395 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 396 | @Override |
| 397 | public void draw(Canvas canvas) { |
| 398 | super.draw(canvas); |
| 399 | |
Romain Guy | b973eef | 2009-06-16 15:53:27 -0700 | [diff] [blame] | 400 | if (mCurrentGesture != null && mGestureVisible) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 401 | canvas.drawPath(mPath, mGesturePaint); |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | private void setPaintAlpha(int alpha) { |
| 406 | alpha += alpha >> 7; |
| 407 | final int baseAlpha = mCurrentColor >>> 24; |
| 408 | final int useAlpha = baseAlpha * alpha >> 8; |
| 409 | mGesturePaint.setColor((mCurrentColor << 8 >>> 8) | (useAlpha << 24)); |
| 410 | } |
| 411 | |
| 412 | public void clear(boolean animated) { |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 413 | clear(animated, false, true); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 414 | } |
| 415 | |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 416 | private void clear(boolean animated, boolean fireActionPerformed, boolean immediate) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 417 | setPaintAlpha(255); |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 418 | removeCallbacks(mFadingOut); |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 419 | mResetGesture = false; |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 420 | mFadingOut.fireActionPerformed = fireActionPerformed; |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 421 | mFadingOut.resetMultipleStrokes = false; |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 422 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 423 | if (animated && mCurrentGesture != null) { |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 424 | mFadingAlpha = 1.0f; |
| 425 | mIsFadingOut = true; |
| 426 | mFadingHasStarted = false; |
| 427 | mFadingStart = AnimationUtils.currentAnimationTimeMillis() + mFadeOffset; |
| 428 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 429 | postDelayed(mFadingOut, mFadeOffset); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 430 | } else { |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 431 | mFadingAlpha = 1.0f; |
| 432 | mIsFadingOut = false; |
| 433 | mFadingHasStarted = false; |
| 434 | |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 435 | if (immediate) { |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 436 | mCurrentGesture = null; |
| 437 | mPath.rewind(); |
| 438 | invalidate(); |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 439 | } else if (fireActionPerformed) { |
| 440 | postDelayed(mFadingOut, mFadeOffset); |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 441 | } else if (mGestureStrokeType == GESTURE_STROKE_TYPE_MULTIPLE) { |
| 442 | mFadingOut.resetMultipleStrokes = true; |
| 443 | postDelayed(mFadingOut, mFadeOffset); |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 444 | } else { |
| 445 | mCurrentGesture = null; |
| 446 | mPath.rewind(); |
| 447 | invalidate(); |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 448 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 449 | } |
| 450 | } |
| 451 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 452 | public void cancelClearAnimation() { |
| 453 | setPaintAlpha(255); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 454 | mIsFadingOut = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 455 | mFadingHasStarted = false; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 456 | removeCallbacks(mFadingOut); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 457 | mPath.rewind(); |
| 458 | mCurrentGesture = null; |
| 459 | } |
| 460 | |
| 461 | public void cancelGesture() { |
| 462 | mIsListeningForGestures = false; |
| 463 | |
| 464 | // add the stroke to the current gesture |
| 465 | mCurrentGesture.addStroke(new GestureStroke(mStrokeBuffer)); |
| 466 | |
| 467 | // pass the event to handlers |
| 468 | final long now = SystemClock.uptimeMillis(); |
| 469 | final MotionEvent event = MotionEvent.obtain(now, now, |
| 470 | MotionEvent.ACTION_CANCEL, 0.0f, 0.0f, 0); |
| 471 | |
| 472 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 473 | int count = listeners.size(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 474 | for (int i = 0; i < count; i++) { |
| 475 | listeners.get(i).onGestureCancelled(this, event); |
| 476 | } |
| 477 | |
| 478 | event.recycle(); |
| 479 | |
| 480 | clear(false); |
| 481 | mIsGesturing = false; |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 482 | mPreviousWasGesturing = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 483 | mStrokeBuffer.clear(); |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 484 | |
| 485 | final ArrayList<OnGesturingListener> otherListeners = mOnGesturingListeners; |
| 486 | count = otherListeners.size(); |
| 487 | for (int i = 0; i < count; i++) { |
| 488 | otherListeners.get(i).onGesturingEnded(this); |
| 489 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 490 | } |
| 491 | |
| 492 | @Override |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 493 | protected void onDetachedFromWindow() { |
Romain Guy | 46bfc48 | 2013-08-16 18:38:29 -0700 | [diff] [blame] | 494 | super.onDetachedFromWindow(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 495 | cancelClearAnimation(); |
| 496 | } |
| 497 | |
| 498 | @Override |
| 499 | public boolean dispatchTouchEvent(MotionEvent event) { |
| 500 | if (isEnabled()) { |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 501 | final boolean cancelDispatch = (mIsGesturing || (mCurrentGesture != null && |
| 502 | mCurrentGesture.getStrokesCount() > 0 && mPreviousWasGesturing)) && |
| 503 | mInterceptEvents; |
| 504 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 505 | processEvent(event); |
| 506 | |
| 507 | if (cancelDispatch) { |
| 508 | event.setAction(MotionEvent.ACTION_CANCEL); |
| 509 | } |
| 510 | |
| 511 | super.dispatchTouchEvent(event); |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 512 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 513 | return true; |
| 514 | } |
| 515 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 516 | return super.dispatchTouchEvent(event); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 517 | } |
| 518 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 519 | private boolean processEvent(MotionEvent event) { |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 520 | switch (event.getAction()) { |
| 521 | case MotionEvent.ACTION_DOWN: |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 522 | touchDown(event); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 523 | invalidate(); |
| 524 | return true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 525 | case MotionEvent.ACTION_MOVE: |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 526 | if (mIsListeningForGestures) { |
| 527 | Rect rect = touchMove(event); |
| 528 | if (rect != null) { |
| 529 | invalidate(rect); |
| 530 | } |
| 531 | return true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 532 | } |
| 533 | break; |
| 534 | case MotionEvent.ACTION_UP: |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 535 | if (mIsListeningForGestures) { |
| 536 | touchUp(event, false); |
| 537 | invalidate(); |
| 538 | return true; |
| 539 | } |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 540 | break; |
| 541 | case MotionEvent.ACTION_CANCEL: |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 542 | if (mIsListeningForGestures) { |
| 543 | touchUp(event, true); |
| 544 | invalidate(); |
| 545 | return true; |
| 546 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 547 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 548 | |
| 549 | return false; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 550 | } |
| 551 | |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 552 | private void touchDown(MotionEvent event) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 553 | mIsListeningForGestures = true; |
| 554 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 555 | float x = event.getX(); |
| 556 | float y = event.getY(); |
| 557 | |
| 558 | mX = x; |
| 559 | mY = y; |
| 560 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 561 | mTotalLength = 0; |
| 562 | mIsGesturing = false; |
| 563 | |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 564 | if (mGestureStrokeType == GESTURE_STROKE_TYPE_SINGLE || mResetGesture) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 565 | if (mHandleGestureActions) setCurrentColor(mUncertainGestureColor); |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 566 | mResetGesture = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 567 | mCurrentGesture = null; |
| 568 | mPath.rewind(); |
| 569 | } else if (mCurrentGesture == null || mCurrentGesture.getStrokesCount() == 0) { |
| 570 | if (mHandleGestureActions) setCurrentColor(mUncertainGestureColor); |
| 571 | } |
| 572 | |
| 573 | // if there is fading out going on, stop it. |
| 574 | if (mFadingHasStarted) { |
| 575 | cancelClearAnimation(); |
| 576 | } else if (mIsFadingOut) { |
| 577 | setPaintAlpha(255); |
| 578 | mIsFadingOut = false; |
| 579 | mFadingHasStarted = false; |
| 580 | removeCallbacks(mFadingOut); |
| 581 | } |
| 582 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 583 | if (mCurrentGesture == null) { |
| 584 | mCurrentGesture = new Gesture(); |
| 585 | } |
| 586 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 587 | mStrokeBuffer.add(new GesturePoint(x, y, event.getEventTime())); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 588 | mPath.moveTo(x, y); |
| 589 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 590 | final int border = mInvalidateExtraBorder; |
| 591 | mInvalidRect.set((int) x - border, (int) y - border, (int) x + border, (int) y + border); |
| 592 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 593 | mCurveEndX = x; |
| 594 | mCurveEndY = y; |
Romain Guy | ff686ce | 2009-05-25 01:33:00 -0700 | [diff] [blame] | 595 | |
| 596 | // pass the event to handlers |
| 597 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
| 598 | final int count = listeners.size(); |
| 599 | for (int i = 0; i < count; i++) { |
| 600 | listeners.get(i).onGestureStarted(this, event); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 601 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | private Rect touchMove(MotionEvent event) { |
| 605 | Rect areaToRefresh = null; |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 606 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 607 | final float x = event.getX(); |
| 608 | final float y = event.getY(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 609 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 610 | final float previousX = mX; |
| 611 | final float previousY = mY; |
| 612 | |
| 613 | final float dx = Math.abs(x - previousX); |
| 614 | final float dy = Math.abs(y - previousY); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 615 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 616 | if (dx >= GestureStroke.TOUCH_TOLERANCE || dy >= GestureStroke.TOUCH_TOLERANCE) { |
| 617 | areaToRefresh = mInvalidRect; |
| 618 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 619 | // start with the curve end |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 620 | final int border = mInvalidateExtraBorder; |
| 621 | areaToRefresh.set((int) mCurveEndX - border, (int) mCurveEndY - border, |
| 622 | (int) mCurveEndX + border, (int) mCurveEndY + border); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 623 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 624 | float cX = mCurveEndX = (x + previousX) / 2; |
| 625 | float cY = mCurveEndY = (y + previousY) / 2; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 626 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 627 | mPath.quadTo(previousX, previousY, cX, cY); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 628 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 629 | // union with the control point of the new curve |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 630 | areaToRefresh.union((int) previousX - border, (int) previousY - border, |
| 631 | (int) previousX + border, (int) previousY + border); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 632 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 633 | // union with the end point of the new curve |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 634 | areaToRefresh.union((int) cX - border, (int) cY - border, |
| 635 | (int) cX + border, (int) cY + border); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 636 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 637 | mX = x; |
| 638 | mY = y; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 639 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 640 | mStrokeBuffer.add(new GesturePoint(x, y, event.getEventTime())); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 641 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 642 | if (mHandleGestureActions && !mIsGesturing) { |
| 643 | mTotalLength += (float) Math.sqrt(dx * dx + dy * dy); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 644 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 645 | if (mTotalLength > mGestureStrokeLengthThreshold) { |
| 646 | final OrientedBoundingBox box = |
Romain Guy | 46c5312 | 2010-02-04 14:19:50 -0800 | [diff] [blame] | 647 | GestureUtils.computeOrientedBoundingBox(mStrokeBuffer); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 648 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 649 | float angle = Math.abs(box.orientation); |
| 650 | if (angle > 90) { |
| 651 | angle = 180 - angle; |
| 652 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 653 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 654 | if (box.squareness > mGestureStrokeSquarenessTreshold || |
| 655 | (mOrientation == ORIENTATION_VERTICAL ? |
| 656 | angle < mGestureStrokeAngleThreshold : |
| 657 | angle > mGestureStrokeAngleThreshold)) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 658 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 659 | mIsGesturing = true; |
| 660 | setCurrentColor(mCertainGestureColor); |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 661 | |
| 662 | final ArrayList<OnGesturingListener> listeners = mOnGesturingListeners; |
| 663 | int count = listeners.size(); |
| 664 | for (int i = 0; i < count; i++) { |
| 665 | listeners.get(i).onGesturingStarted(this); |
| 666 | } |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 667 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 668 | } |
| 669 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 670 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 671 | // pass the event to handlers |
| 672 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
| 673 | final int count = listeners.size(); |
| 674 | for (int i = 0; i < count; i++) { |
| 675 | listeners.get(i).onGesture(this, event); |
| 676 | } |
| 677 | } |
Romain Guy | ff686ce | 2009-05-25 01:33:00 -0700 | [diff] [blame] | 678 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 679 | return areaToRefresh; |
| 680 | } |
| 681 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 682 | private void touchUp(MotionEvent event, boolean cancel) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 683 | mIsListeningForGestures = false; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 684 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 685 | // A gesture wasn't started or was cancelled |
| 686 | if (mCurrentGesture != null) { |
| 687 | // add the stroke to the current gesture |
| 688 | mCurrentGesture.addStroke(new GestureStroke(mStrokeBuffer)); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 689 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 690 | if (!cancel) { |
| 691 | // pass the event to handlers |
| 692 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
| 693 | int count = listeners.size(); |
| 694 | for (int i = 0; i < count; i++) { |
| 695 | listeners.get(i).onGestureEnded(this, event); |
| 696 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 697 | |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 698 | clear(mHandleGestureActions && mFadeEnabled, mHandleGestureActions && mIsGesturing, |
| 699 | false); |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 700 | } else { |
| 701 | cancelGesture(event); |
| 702 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 703 | } |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 704 | } else { |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 705 | cancelGesture(event); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 706 | } |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 707 | |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 708 | mStrokeBuffer.clear(); |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 709 | mPreviousWasGesturing = mIsGesturing; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 710 | mIsGesturing = false; |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 711 | |
| 712 | final ArrayList<OnGesturingListener> listeners = mOnGesturingListeners; |
| 713 | int count = listeners.size(); |
| 714 | for (int i = 0; i < count; i++) { |
| 715 | listeners.get(i).onGesturingEnded(this); |
| 716 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 717 | } |
| 718 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 719 | private void cancelGesture(MotionEvent event) { |
| 720 | // pass the event to handlers |
| 721 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
| 722 | final int count = listeners.size(); |
| 723 | for (int i = 0; i < count; i++) { |
| 724 | listeners.get(i).onGestureCancelled(this, event); |
| 725 | } |
| 726 | |
| 727 | clear(false); |
| 728 | } |
| 729 | |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 730 | private void fireOnGesturePerformed() { |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 731 | final ArrayList<OnGesturePerformedListener> actionListeners = mOnGesturePerformedListeners; |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 732 | final int count = actionListeners.size(); |
| 733 | for (int i = 0; i < count; i++) { |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 734 | actionListeners.get(i).onGesturePerformed(GestureOverlayView.this, mCurrentGesture); |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 735 | } |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 736 | } |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 737 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 738 | private class FadeOutRunnable implements Runnable { |
| 739 | boolean fireActionPerformed; |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 740 | boolean resetMultipleStrokes; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 741 | |
| 742 | public void run() { |
| 743 | if (mIsFadingOut) { |
| 744 | final long now = AnimationUtils.currentAnimationTimeMillis(); |
| 745 | final long duration = now - mFadingStart; |
| 746 | |
| 747 | if (duration > mFadeDuration) { |
| 748 | if (fireActionPerformed) { |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 749 | fireOnGesturePerformed(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 750 | } |
| 751 | |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 752 | mPreviousWasGesturing = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 753 | mIsFadingOut = false; |
| 754 | mFadingHasStarted = false; |
| 755 | mPath.rewind(); |
| 756 | mCurrentGesture = null; |
| 757 | setPaintAlpha(255); |
| 758 | } else { |
| 759 | mFadingHasStarted = true; |
| 760 | float interpolatedTime = Math.max(0.0f, |
| 761 | Math.min(1.0f, duration / (float) mFadeDuration)); |
| 762 | mFadingAlpha = 1.0f - mInterpolator.getInterpolation(interpolatedTime); |
| 763 | setPaintAlpha((int) (255 * mFadingAlpha)); |
| 764 | postDelayed(this, FADE_ANIMATION_RATE); |
| 765 | } |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 766 | } else if (resetMultipleStrokes) { |
| 767 | mResetGesture = true; |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 768 | } else { |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 769 | fireOnGesturePerformed(); |
| 770 | |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 771 | mFadingHasStarted = false; |
| 772 | mPath.rewind(); |
| 773 | mCurrentGesture = null; |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 774 | mPreviousWasGesturing = false; |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 775 | setPaintAlpha(255); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 776 | } |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 777 | |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 778 | invalidate(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 779 | } |
| 780 | } |
| 781 | |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 782 | public static interface OnGesturingListener { |
| 783 | void onGesturingStarted(GestureOverlayView overlay); |
| 784 | |
| 785 | void onGesturingEnded(GestureOverlayView overlay); |
| 786 | } |
| 787 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 788 | public static interface OnGestureListener { |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 789 | void onGestureStarted(GestureOverlayView overlay, MotionEvent event); |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 790 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 791 | void onGesture(GestureOverlayView overlay, MotionEvent event); |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 792 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 793 | void onGestureEnded(GestureOverlayView overlay, MotionEvent event); |
| 794 | |
| 795 | void onGestureCancelled(GestureOverlayView overlay, MotionEvent event); |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 796 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 797 | |
| 798 | public static interface OnGesturePerformedListener { |
| 799 | void onGesturePerformed(GestureOverlayView overlay, Gesture gesture); |
| 800 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 801 | } |