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 | |
Tor Norbye | 80756e3 | 2015-03-02 09:39:27 -0800 | [diff] [blame] | 19 | import android.annotation.ColorInt; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 20 | import android.content.Context; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 21 | import android.content.res.TypedArray; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 22 | import android.graphics.Canvas; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 23 | import android.graphics.Paint; |
| 24 | import android.graphics.Path; |
| 25 | import android.graphics.Rect; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 26 | import android.graphics.RectF; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 27 | import android.util.AttributeSet; |
| 28 | import android.view.MotionEvent; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 29 | import android.view.animation.AnimationUtils; |
| 30 | import android.view.animation.AccelerateDecelerateInterpolator; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 31 | import android.widget.FrameLayout; |
| 32 | import android.os.SystemClock; |
Romain Guy | 51099c5 | 2009-09-11 14:29:15 -0700 | [diff] [blame] | 33 | import android.annotation.Widget; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 34 | import com.android.internal.R; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 35 | |
| 36 | import java.util.ArrayList; |
| 37 | |
| 38 | /** |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 39 | * A transparent overlay for gesture input that can be placed on top of other |
| 40 | * widgets or contain other widgets. |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 41 | * |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 42 | * @attr ref android.R.styleable#GestureOverlayView_eventsInterceptionEnabled |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 43 | * @attr ref android.R.styleable#GestureOverlayView_fadeDuration |
| 44 | * @attr ref android.R.styleable#GestureOverlayView_fadeOffset |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 45 | * @attr ref android.R.styleable#GestureOverlayView_fadeEnabled |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 46 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeWidth |
| 47 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeAngleThreshold |
| 48 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeLengthThreshold |
| 49 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeSquarenessThreshold |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 50 | * @attr ref android.R.styleable#GestureOverlayView_gestureStrokeType |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 51 | * @attr ref android.R.styleable#GestureOverlayView_gestureColor |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 52 | * @attr ref android.R.styleable#GestureOverlayView_orientation |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 53 | * @attr ref android.R.styleable#GestureOverlayView_uncertainGestureColor |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 54 | */ |
Romain Guy | 51099c5 | 2009-09-11 14:29:15 -0700 | [diff] [blame] | 55 | @Widget |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 56 | public class GestureOverlayView extends FrameLayout { |
| 57 | public static final int GESTURE_STROKE_TYPE_SINGLE = 0; |
| 58 | public static final int GESTURE_STROKE_TYPE_MULTIPLE = 1; |
| 59 | |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 60 | public static final int ORIENTATION_HORIZONTAL = 0; |
| 61 | public static final int ORIENTATION_VERTICAL = 1; |
| 62 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 63 | private static final int FADE_ANIMATION_RATE = 16; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 64 | private static final boolean GESTURE_RENDERING_ANTIALIAS = true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 65 | private static final boolean DITHER_FLAG = true; |
| 66 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 67 | private final Paint mGesturePaint = new Paint(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 68 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 69 | private long mFadeDuration = 150; |
| 70 | private long mFadeOffset = 420; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 71 | private long mFadingStart; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 72 | private boolean mFadingHasStarted; |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 73 | private boolean mFadeEnabled = true; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 74 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 75 | private int mCurrentColor; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 76 | private int mCertainGestureColor = 0xFFFFFF00; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 77 | private int mUncertainGestureColor = 0x48FFFF00; |
| 78 | private float mGestureStrokeWidth = 12.0f; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 79 | private int mInvalidateExtraBorder = 10; |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 80 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 81 | private int mGestureStrokeType = GESTURE_STROKE_TYPE_SINGLE; |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 82 | private float mGestureStrokeLengthThreshold = 50.0f; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 83 | private float mGestureStrokeSquarenessTreshold = 0.275f; |
| 84 | private float mGestureStrokeAngleThreshold = 40.0f; |
| 85 | |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 86 | private int mOrientation = ORIENTATION_VERTICAL; |
| 87 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 88 | private final Rect mInvalidRect = new Rect(); |
| 89 | private final Path mPath = new Path(); |
Romain Guy | e705f2c | 2009-06-16 17:07:21 -0700 | [diff] [blame] | 90 | private boolean mGestureVisible = true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 91 | |
| 92 | private float mX; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 93 | private float mY; |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 94 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 95 | private float mCurveEndX; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 96 | private float mCurveEndY; |
| 97 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 98 | private float mTotalLength; |
| 99 | private boolean mIsGesturing = false; |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 100 | private boolean mPreviousWasGesturing = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 101 | private boolean mInterceptEvents = true; |
| 102 | private boolean mIsListeningForGestures; |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 103 | private boolean mResetGesture; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 104 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 105 | // current gesture |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 106 | private Gesture mCurrentGesture; |
| 107 | private final ArrayList<GesturePoint> mStrokeBuffer = new ArrayList<GesturePoint>(100); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 108 | |
Romain Guy | c534727 | 2009-05-20 10:37:13 -0700 | [diff] [blame] | 109 | // TODO: Make this a list of WeakReferences |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 110 | private final ArrayList<OnGestureListener> mOnGestureListeners = |
| 111 | new ArrayList<OnGestureListener>(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 112 | // TODO: Make this a list of WeakReferences |
| 113 | private final ArrayList<OnGesturePerformedListener> mOnGesturePerformedListeners = |
| 114 | new ArrayList<OnGesturePerformedListener>(); |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 115 | // TODO: Make this a list of WeakReferences |
| 116 | private final ArrayList<OnGesturingListener> mOnGesturingListeners = |
| 117 | new ArrayList<OnGesturingListener>(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 118 | |
| 119 | private boolean mHandleGestureActions; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 120 | |
| 121 | // fading out effect |
| 122 | private boolean mIsFadingOut = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 123 | private float mFadingAlpha = 1.0f; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 124 | private final AccelerateDecelerateInterpolator mInterpolator = |
| 125 | new AccelerateDecelerateInterpolator(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 126 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 127 | private final FadeOutRunnable mFadingOut = new FadeOutRunnable(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 128 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 129 | public GestureOverlayView(Context context) { |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 130 | super(context); |
| 131 | init(); |
| 132 | } |
| 133 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 134 | public GestureOverlayView(Context context, AttributeSet attrs) { |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 135 | this(context, attrs, com.android.internal.R.attr.gestureOverlayViewStyle); |
| 136 | } |
| 137 | |
Alan Viverette | 617feb9 | 2013-09-09 18:09:13 -0700 | [diff] [blame] | 138 | public GestureOverlayView(Context context, AttributeSet attrs, int defStyleAttr) { |
| 139 | this(context, attrs, defStyleAttr, 0); |
| 140 | } |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 141 | |
Alan Viverette | 617feb9 | 2013-09-09 18:09:13 -0700 | [diff] [blame] | 142 | public GestureOverlayView( |
| 143 | Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| 144 | super(context, attrs, defStyleAttr, defStyleRes); |
| 145 | |
| 146 | final TypedArray a = context.obtainStyledAttributes( |
| 147 | attrs, R.styleable.GestureOverlayView, defStyleAttr, defStyleRes); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 148 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 149 | mGestureStrokeWidth = a.getFloat(R.styleable.GestureOverlayView_gestureStrokeWidth, |
| 150 | mGestureStrokeWidth); |
| 151 | mInvalidateExtraBorder = Math.max(1, ((int) mGestureStrokeWidth) - 1); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 152 | mCertainGestureColor = a.getColor(R.styleable.GestureOverlayView_gestureColor, |
| 153 | mCertainGestureColor); |
| 154 | mUncertainGestureColor = a.getColor(R.styleable.GestureOverlayView_uncertainGestureColor, |
| 155 | mUncertainGestureColor); |
| 156 | mFadeDuration = a.getInt(R.styleable.GestureOverlayView_fadeDuration, (int) mFadeDuration); |
| 157 | mFadeOffset = a.getInt(R.styleable.GestureOverlayView_fadeOffset, (int) mFadeOffset); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 158 | mGestureStrokeType = a.getInt(R.styleable.GestureOverlayView_gestureStrokeType, |
| 159 | mGestureStrokeType); |
| 160 | mGestureStrokeLengthThreshold = a.getFloat( |
| 161 | R.styleable.GestureOverlayView_gestureStrokeLengthThreshold, |
| 162 | mGestureStrokeLengthThreshold); |
| 163 | mGestureStrokeAngleThreshold = a.getFloat( |
| 164 | R.styleable.GestureOverlayView_gestureStrokeAngleThreshold, |
| 165 | mGestureStrokeAngleThreshold); |
| 166 | mGestureStrokeSquarenessTreshold = a.getFloat( |
| 167 | R.styleable.GestureOverlayView_gestureStrokeSquarenessThreshold, |
| 168 | mGestureStrokeSquarenessTreshold); |
| 169 | mInterceptEvents = a.getBoolean(R.styleable.GestureOverlayView_eventsInterceptionEnabled, |
| 170 | mInterceptEvents); |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 171 | mFadeEnabled = a.getBoolean(R.styleable.GestureOverlayView_fadeEnabled, |
| 172 | mFadeEnabled); |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 173 | mOrientation = a.getInt(R.styleable.GestureOverlayView_orientation, mOrientation); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 174 | |
| 175 | a.recycle(); |
| 176 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 177 | init(); |
| 178 | } |
| 179 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 180 | private void init() { |
| 181 | setWillNotDraw(false); |
| 182 | |
| 183 | final Paint gesturePaint = mGesturePaint; |
| 184 | gesturePaint.setAntiAlias(GESTURE_RENDERING_ANTIALIAS); |
| 185 | gesturePaint.setColor(mCertainGestureColor); |
| 186 | gesturePaint.setStyle(Paint.Style.STROKE); |
| 187 | gesturePaint.setStrokeJoin(Paint.Join.ROUND); |
| 188 | gesturePaint.setStrokeCap(Paint.Cap.ROUND); |
| 189 | gesturePaint.setStrokeWidth(mGestureStrokeWidth); |
| 190 | gesturePaint.setDither(DITHER_FLAG); |
| 191 | |
| 192 | mCurrentColor = mCertainGestureColor; |
| 193 | setPaintAlpha(255); |
| 194 | } |
| 195 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 196 | public ArrayList<GesturePoint> getCurrentStroke() { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 197 | return mStrokeBuffer; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 198 | } |
| 199 | |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 200 | public int getOrientation() { |
| 201 | return mOrientation; |
| 202 | } |
| 203 | |
| 204 | public void setOrientation(int orientation) { |
| 205 | mOrientation = orientation; |
| 206 | } |
| 207 | |
Tor Norbye | 80756e3 | 2015-03-02 09:39:27 -0800 | [diff] [blame] | 208 | public void setGestureColor(@ColorInt int color) { |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 209 | mCertainGestureColor = color; |
| 210 | } |
| 211 | |
Tor Norbye | 80756e3 | 2015-03-02 09:39:27 -0800 | [diff] [blame] | 212 | public void setUncertainGestureColor(@ColorInt int color) { |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 213 | mUncertainGestureColor = color; |
| 214 | } |
| 215 | |
Tor Norbye | 80756e3 | 2015-03-02 09:39:27 -0800 | [diff] [blame] | 216 | @ColorInt |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 217 | public int getUncertainGestureColor() { |
| 218 | return mUncertainGestureColor; |
| 219 | } |
| 220 | |
Tor Norbye | 80756e3 | 2015-03-02 09:39:27 -0800 | [diff] [blame] | 221 | @ColorInt |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 222 | public int getGestureColor() { |
| 223 | return mCertainGestureColor; |
| 224 | } |
| 225 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 226 | public float getGestureStrokeWidth() { |
| 227 | return mGestureStrokeWidth; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 228 | } |
| 229 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 230 | public void setGestureStrokeWidth(float gestureStrokeWidth) { |
| 231 | mGestureStrokeWidth = gestureStrokeWidth; |
| 232 | mInvalidateExtraBorder = Math.max(1, ((int) gestureStrokeWidth) - 1); |
| 233 | mGesturePaint.setStrokeWidth(gestureStrokeWidth); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 234 | } |
| 235 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 236 | public int getGestureStrokeType() { |
| 237 | return mGestureStrokeType; |
| 238 | } |
| 239 | |
| 240 | public void setGestureStrokeType(int gestureStrokeType) { |
| 241 | mGestureStrokeType = gestureStrokeType; |
| 242 | } |
| 243 | |
| 244 | public float getGestureStrokeLengthThreshold() { |
| 245 | return mGestureStrokeLengthThreshold; |
| 246 | } |
| 247 | |
| 248 | public void setGestureStrokeLengthThreshold(float gestureStrokeLengthThreshold) { |
| 249 | mGestureStrokeLengthThreshold = gestureStrokeLengthThreshold; |
| 250 | } |
| 251 | |
| 252 | public float getGestureStrokeSquarenessTreshold() { |
| 253 | return mGestureStrokeSquarenessTreshold; |
| 254 | } |
| 255 | |
| 256 | public void setGestureStrokeSquarenessTreshold(float gestureStrokeSquarenessTreshold) { |
| 257 | mGestureStrokeSquarenessTreshold = gestureStrokeSquarenessTreshold; |
| 258 | } |
| 259 | |
| 260 | public float getGestureStrokeAngleThreshold() { |
| 261 | return mGestureStrokeAngleThreshold; |
| 262 | } |
| 263 | |
| 264 | public void setGestureStrokeAngleThreshold(float gestureStrokeAngleThreshold) { |
| 265 | mGestureStrokeAngleThreshold = gestureStrokeAngleThreshold; |
| 266 | } |
| 267 | |
| 268 | public boolean isEventsInterceptionEnabled() { |
| 269 | return mInterceptEvents; |
| 270 | } |
| 271 | |
| 272 | public void setEventsInterceptionEnabled(boolean enabled) { |
| 273 | mInterceptEvents = enabled; |
| 274 | } |
| 275 | |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 276 | public boolean isFadeEnabled() { |
| 277 | return mFadeEnabled; |
| 278 | } |
| 279 | |
| 280 | public void setFadeEnabled(boolean fadeEnabled) { |
| 281 | mFadeEnabled = fadeEnabled; |
| 282 | } |
| 283 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 284 | public Gesture getGesture() { |
| 285 | return mCurrentGesture; |
| 286 | } |
| 287 | |
| 288 | public void setGesture(Gesture gesture) { |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 289 | if (mCurrentGesture != null) { |
| 290 | clear(false); |
| 291 | } |
| 292 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 293 | setCurrentColor(mCertainGestureColor); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 294 | mCurrentGesture = gesture; |
| 295 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 296 | final Path path = mCurrentGesture.toPath(); |
| 297 | final RectF bounds = new RectF(); |
| 298 | path.computeBounds(bounds, true); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 299 | |
Romain Guy | cfbe8cf | 2009-06-10 01:21:20 -0700 | [diff] [blame] | 300 | // TODO: The path should also be scaled to fit inside this view |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 301 | mPath.rewind(); |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 302 | mPath.addPath(path, -bounds.left + (getWidth() - bounds.width()) / 2.0f, |
| 303 | -bounds.top + (getHeight() - bounds.height()) / 2.0f); |
| 304 | |
| 305 | mResetGesture = true; |
Romain Guy | c534727 | 2009-05-20 10:37:13 -0700 | [diff] [blame] | 306 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 307 | invalidate(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 308 | } |
| 309 | |
Romain Guy | b973eef | 2009-06-16 15:53:27 -0700 | [diff] [blame] | 310 | public Path getGesturePath() { |
| 311 | return mPath; |
| 312 | } |
| 313 | |
| 314 | public Path getGesturePath(Path path) { |
| 315 | path.set(mPath); |
| 316 | return path; |
| 317 | } |
| 318 | |
| 319 | public boolean isGestureVisible() { |
| 320 | return mGestureVisible; |
| 321 | } |
| 322 | |
| 323 | public void setGestureVisible(boolean visible) { |
| 324 | mGestureVisible = visible; |
| 325 | } |
| 326 | |
| 327 | public long getFadeOffset() { |
| 328 | return mFadeOffset; |
| 329 | } |
| 330 | |
| 331 | public void setFadeOffset(long fadeOffset) { |
| 332 | mFadeOffset = fadeOffset; |
| 333 | } |
| 334 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 335 | public void addOnGestureListener(OnGestureListener listener) { |
| 336 | mOnGestureListeners.add(listener); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 337 | } |
| 338 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 339 | public void removeOnGestureListener(OnGestureListener listener) { |
| 340 | mOnGestureListeners.remove(listener); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 341 | } |
| 342 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 343 | public void removeAllOnGestureListeners() { |
| 344 | mOnGestureListeners.clear(); |
| 345 | } |
| 346 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 347 | public void addOnGesturePerformedListener(OnGesturePerformedListener listener) { |
| 348 | mOnGesturePerformedListeners.add(listener); |
| 349 | if (mOnGesturePerformedListeners.size() > 0) { |
| 350 | mHandleGestureActions = true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 351 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 354 | public void removeOnGesturePerformedListener(OnGesturePerformedListener listener) { |
| 355 | mOnGesturePerformedListeners.remove(listener); |
| 356 | if (mOnGesturePerformedListeners.size() <= 0) { |
| 357 | mHandleGestureActions = false; |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | public void removeAllOnGesturePerformedListeners() { |
| 362 | mOnGesturePerformedListeners.clear(); |
| 363 | mHandleGestureActions = false; |
| 364 | } |
| 365 | |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 366 | public void addOnGesturingListener(OnGesturingListener listener) { |
| 367 | mOnGesturingListeners.add(listener); |
| 368 | } |
| 369 | |
| 370 | public void removeOnGesturingListener(OnGesturingListener listener) { |
| 371 | mOnGesturingListeners.remove(listener); |
| 372 | } |
| 373 | |
| 374 | public void removeAllOnGesturingListeners() { |
| 375 | mOnGesturingListeners.clear(); |
| 376 | } |
| 377 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 378 | public boolean isGesturing() { |
| 379 | return mIsGesturing; |
| 380 | } |
| 381 | |
| 382 | private void setCurrentColor(int color) { |
| 383 | mCurrentColor = color; |
| 384 | if (mFadingHasStarted) { |
| 385 | setPaintAlpha((int) (255 * mFadingAlpha)); |
| 386 | } else { |
| 387 | setPaintAlpha(255); |
| 388 | } |
| 389 | invalidate(); |
| 390 | } |
| 391 | |
Romain Guy | 27a2b50 | 2009-06-09 04:36:14 -0700 | [diff] [blame] | 392 | /** |
| 393 | * @hide |
| 394 | */ |
| 395 | public Paint getGesturePaint() { |
| 396 | return mGesturePaint; |
| 397 | } |
| 398 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 399 | @Override |
| 400 | public void draw(Canvas canvas) { |
| 401 | super.draw(canvas); |
| 402 | |
Romain Guy | b973eef | 2009-06-16 15:53:27 -0700 | [diff] [blame] | 403 | if (mCurrentGesture != null && mGestureVisible) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 404 | canvas.drawPath(mPath, mGesturePaint); |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | private void setPaintAlpha(int alpha) { |
| 409 | alpha += alpha >> 7; |
| 410 | final int baseAlpha = mCurrentColor >>> 24; |
| 411 | final int useAlpha = baseAlpha * alpha >> 8; |
| 412 | mGesturePaint.setColor((mCurrentColor << 8 >>> 8) | (useAlpha << 24)); |
| 413 | } |
| 414 | |
| 415 | public void clear(boolean animated) { |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 416 | clear(animated, false, true); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 417 | } |
| 418 | |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 419 | private void clear(boolean animated, boolean fireActionPerformed, boolean immediate) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 420 | setPaintAlpha(255); |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 421 | removeCallbacks(mFadingOut); |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 422 | mResetGesture = false; |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 423 | mFadingOut.fireActionPerformed = fireActionPerformed; |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 424 | mFadingOut.resetMultipleStrokes = false; |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 425 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 426 | if (animated && mCurrentGesture != null) { |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 427 | mFadingAlpha = 1.0f; |
| 428 | mIsFadingOut = true; |
| 429 | mFadingHasStarted = false; |
| 430 | mFadingStart = AnimationUtils.currentAnimationTimeMillis() + mFadeOffset; |
| 431 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 432 | postDelayed(mFadingOut, mFadeOffset); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 433 | } else { |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 434 | mFadingAlpha = 1.0f; |
| 435 | mIsFadingOut = false; |
| 436 | mFadingHasStarted = false; |
| 437 | |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 438 | if (immediate) { |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 439 | mCurrentGesture = null; |
| 440 | mPath.rewind(); |
| 441 | invalidate(); |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 442 | } else if (fireActionPerformed) { |
| 443 | postDelayed(mFadingOut, mFadeOffset); |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 444 | } else if (mGestureStrokeType == GESTURE_STROKE_TYPE_MULTIPLE) { |
| 445 | mFadingOut.resetMultipleStrokes = true; |
| 446 | postDelayed(mFadingOut, mFadeOffset); |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 447 | } else { |
| 448 | mCurrentGesture = null; |
| 449 | mPath.rewind(); |
| 450 | invalidate(); |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 451 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 452 | } |
| 453 | } |
| 454 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 455 | public void cancelClearAnimation() { |
| 456 | setPaintAlpha(255); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 457 | mIsFadingOut = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 458 | mFadingHasStarted = false; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 459 | removeCallbacks(mFadingOut); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 460 | mPath.rewind(); |
| 461 | mCurrentGesture = null; |
| 462 | } |
| 463 | |
| 464 | public void cancelGesture() { |
| 465 | mIsListeningForGestures = false; |
| 466 | |
| 467 | // add the stroke to the current gesture |
| 468 | mCurrentGesture.addStroke(new GestureStroke(mStrokeBuffer)); |
| 469 | |
| 470 | // pass the event to handlers |
| 471 | final long now = SystemClock.uptimeMillis(); |
| 472 | final MotionEvent event = MotionEvent.obtain(now, now, |
| 473 | MotionEvent.ACTION_CANCEL, 0.0f, 0.0f, 0); |
| 474 | |
| 475 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 476 | int count = listeners.size(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 477 | for (int i = 0; i < count; i++) { |
| 478 | listeners.get(i).onGestureCancelled(this, event); |
| 479 | } |
| 480 | |
| 481 | event.recycle(); |
| 482 | |
| 483 | clear(false); |
| 484 | mIsGesturing = false; |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 485 | mPreviousWasGesturing = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 486 | mStrokeBuffer.clear(); |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 487 | |
| 488 | final ArrayList<OnGesturingListener> otherListeners = mOnGesturingListeners; |
| 489 | count = otherListeners.size(); |
| 490 | for (int i = 0; i < count; i++) { |
| 491 | otherListeners.get(i).onGesturingEnded(this); |
| 492 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 493 | } |
| 494 | |
| 495 | @Override |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 496 | protected void onDetachedFromWindow() { |
Romain Guy | 46bfc48 | 2013-08-16 18:38:29 -0700 | [diff] [blame] | 497 | super.onDetachedFromWindow(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 498 | cancelClearAnimation(); |
| 499 | } |
| 500 | |
| 501 | @Override |
| 502 | public boolean dispatchTouchEvent(MotionEvent event) { |
| 503 | if (isEnabled()) { |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 504 | final boolean cancelDispatch = (mIsGesturing || (mCurrentGesture != null && |
| 505 | mCurrentGesture.getStrokesCount() > 0 && mPreviousWasGesturing)) && |
| 506 | mInterceptEvents; |
| 507 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 508 | processEvent(event); |
| 509 | |
| 510 | if (cancelDispatch) { |
| 511 | event.setAction(MotionEvent.ACTION_CANCEL); |
| 512 | } |
| 513 | |
| 514 | super.dispatchTouchEvent(event); |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 515 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 516 | return true; |
| 517 | } |
| 518 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 519 | return super.dispatchTouchEvent(event); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 520 | } |
| 521 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 522 | private boolean processEvent(MotionEvent event) { |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 523 | switch (event.getAction()) { |
| 524 | case MotionEvent.ACTION_DOWN: |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 525 | touchDown(event); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 526 | invalidate(); |
| 527 | return true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 528 | case MotionEvent.ACTION_MOVE: |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 529 | if (mIsListeningForGestures) { |
| 530 | Rect rect = touchMove(event); |
| 531 | if (rect != null) { |
| 532 | invalidate(rect); |
| 533 | } |
| 534 | return true; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 535 | } |
| 536 | break; |
| 537 | case MotionEvent.ACTION_UP: |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 538 | if (mIsListeningForGestures) { |
| 539 | touchUp(event, false); |
| 540 | invalidate(); |
| 541 | return true; |
| 542 | } |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 543 | break; |
| 544 | case MotionEvent.ACTION_CANCEL: |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 545 | if (mIsListeningForGestures) { |
| 546 | touchUp(event, true); |
| 547 | invalidate(); |
| 548 | return true; |
| 549 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 550 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 551 | |
| 552 | return false; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 553 | } |
| 554 | |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 555 | private void touchDown(MotionEvent event) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 556 | mIsListeningForGestures = true; |
| 557 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 558 | float x = event.getX(); |
| 559 | float y = event.getY(); |
| 560 | |
| 561 | mX = x; |
| 562 | mY = y; |
| 563 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 564 | mTotalLength = 0; |
| 565 | mIsGesturing = false; |
| 566 | |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 567 | if (mGestureStrokeType == GESTURE_STROKE_TYPE_SINGLE || mResetGesture) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 568 | if (mHandleGestureActions) setCurrentColor(mUncertainGestureColor); |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 569 | mResetGesture = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 570 | mCurrentGesture = null; |
| 571 | mPath.rewind(); |
| 572 | } else if (mCurrentGesture == null || mCurrentGesture.getStrokesCount() == 0) { |
| 573 | if (mHandleGestureActions) setCurrentColor(mUncertainGestureColor); |
| 574 | } |
| 575 | |
| 576 | // if there is fading out going on, stop it. |
| 577 | if (mFadingHasStarted) { |
| 578 | cancelClearAnimation(); |
| 579 | } else if (mIsFadingOut) { |
| 580 | setPaintAlpha(255); |
| 581 | mIsFadingOut = false; |
| 582 | mFadingHasStarted = false; |
| 583 | removeCallbacks(mFadingOut); |
| 584 | } |
| 585 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 586 | if (mCurrentGesture == null) { |
| 587 | mCurrentGesture = new Gesture(); |
| 588 | } |
| 589 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 590 | mStrokeBuffer.add(new GesturePoint(x, y, event.getEventTime())); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 591 | mPath.moveTo(x, y); |
| 592 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 593 | final int border = mInvalidateExtraBorder; |
| 594 | mInvalidRect.set((int) x - border, (int) y - border, (int) x + border, (int) y + border); |
| 595 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 596 | mCurveEndX = x; |
| 597 | mCurveEndY = y; |
Romain Guy | ff686ce | 2009-05-25 01:33:00 -0700 | [diff] [blame] | 598 | |
| 599 | // pass the event to handlers |
| 600 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
| 601 | final int count = listeners.size(); |
| 602 | for (int i = 0; i < count; i++) { |
| 603 | listeners.get(i).onGestureStarted(this, event); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 604 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 605 | } |
| 606 | |
| 607 | private Rect touchMove(MotionEvent event) { |
| 608 | Rect areaToRefresh = null; |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 609 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 610 | final float x = event.getX(); |
| 611 | final float y = event.getY(); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 612 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 613 | final float previousX = mX; |
| 614 | final float previousY = mY; |
| 615 | |
| 616 | final float dx = Math.abs(x - previousX); |
| 617 | final float dy = Math.abs(y - previousY); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 618 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 619 | if (dx >= GestureStroke.TOUCH_TOLERANCE || dy >= GestureStroke.TOUCH_TOLERANCE) { |
| 620 | areaToRefresh = mInvalidRect; |
| 621 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 622 | // start with the curve end |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 623 | final int border = mInvalidateExtraBorder; |
| 624 | areaToRefresh.set((int) mCurveEndX - border, (int) mCurveEndY - border, |
| 625 | (int) mCurveEndX + border, (int) mCurveEndY + border); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 626 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 627 | float cX = mCurveEndX = (x + previousX) / 2; |
| 628 | float cY = mCurveEndY = (y + previousY) / 2; |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 629 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 630 | mPath.quadTo(previousX, previousY, cX, cY); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 631 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 632 | // union with the control point of the new curve |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 633 | areaToRefresh.union((int) previousX - border, (int) previousY - border, |
| 634 | (int) previousX + border, (int) previousY + border); |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 635 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 636 | // union with the end point of the new curve |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 637 | areaToRefresh.union((int) cX - border, (int) cY - border, |
| 638 | (int) cX + border, (int) cY + border); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 639 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 640 | mX = x; |
| 641 | mY = y; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 642 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 643 | mStrokeBuffer.add(new GesturePoint(x, y, event.getEventTime())); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 644 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 645 | if (mHandleGestureActions && !mIsGesturing) { |
Neil Fuller | 33253a4 | 2014-10-01 11:55:10 +0100 | [diff] [blame] | 646 | mTotalLength += (float) Math.hypot(dx, dy); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 647 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 648 | if (mTotalLength > mGestureStrokeLengthThreshold) { |
| 649 | final OrientedBoundingBox box = |
Romain Guy | 46c5312 | 2010-02-04 14:19:50 -0800 | [diff] [blame] | 650 | GestureUtils.computeOrientedBoundingBox(mStrokeBuffer); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 651 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 652 | float angle = Math.abs(box.orientation); |
| 653 | if (angle > 90) { |
| 654 | angle = 180 - angle; |
| 655 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 656 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 657 | if (box.squareness > mGestureStrokeSquarenessTreshold || |
| 658 | (mOrientation == ORIENTATION_VERTICAL ? |
| 659 | angle < mGestureStrokeAngleThreshold : |
| 660 | angle > mGestureStrokeAngleThreshold)) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 661 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 662 | mIsGesturing = true; |
| 663 | setCurrentColor(mCertainGestureColor); |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 664 | |
| 665 | final ArrayList<OnGesturingListener> listeners = mOnGesturingListeners; |
| 666 | int count = listeners.size(); |
| 667 | for (int i = 0; i < count; i++) { |
| 668 | listeners.get(i).onGesturingStarted(this); |
| 669 | } |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 670 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 671 | } |
| 672 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 673 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 674 | // pass the event to handlers |
| 675 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
| 676 | final int count = listeners.size(); |
| 677 | for (int i = 0; i < count; i++) { |
| 678 | listeners.get(i).onGesture(this, event); |
| 679 | } |
| 680 | } |
Romain Guy | ff686ce | 2009-05-25 01:33:00 -0700 | [diff] [blame] | 681 | |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 682 | return areaToRefresh; |
| 683 | } |
| 684 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 685 | private void touchUp(MotionEvent event, boolean cancel) { |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 686 | mIsListeningForGestures = false; |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 687 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 688 | // A gesture wasn't started or was cancelled |
| 689 | if (mCurrentGesture != null) { |
| 690 | // add the stroke to the current gesture |
| 691 | mCurrentGesture.addStroke(new GestureStroke(mStrokeBuffer)); |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 692 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 693 | if (!cancel) { |
| 694 | // pass the event to handlers |
| 695 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
| 696 | int count = listeners.size(); |
| 697 | for (int i = 0; i < count; i++) { |
| 698 | listeners.get(i).onGestureEnded(this, event); |
| 699 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 700 | |
Romain Guy | 03f0b21 | 2009-06-09 04:15:22 -0700 | [diff] [blame] | 701 | clear(mHandleGestureActions && mFadeEnabled, mHandleGestureActions && mIsGesturing, |
| 702 | false); |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 703 | } else { |
| 704 | cancelGesture(event); |
| 705 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 706 | } |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 707 | } else { |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 708 | cancelGesture(event); |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 709 | } |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 710 | |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 711 | mStrokeBuffer.clear(); |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 712 | mPreviousWasGesturing = mIsGesturing; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 713 | mIsGesturing = false; |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 714 | |
| 715 | final ArrayList<OnGesturingListener> listeners = mOnGesturingListeners; |
| 716 | int count = listeners.size(); |
| 717 | for (int i = 0; i < count; i++) { |
| 718 | listeners.get(i).onGesturingEnded(this); |
| 719 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 720 | } |
| 721 | |
Romain Guy | d1c67d4 | 2009-05-29 13:53:16 -0700 | [diff] [blame] | 722 | private void cancelGesture(MotionEvent event) { |
| 723 | // pass the event to handlers |
| 724 | final ArrayList<OnGestureListener> listeners = mOnGestureListeners; |
| 725 | final int count = listeners.size(); |
| 726 | for (int i = 0; i < count; i++) { |
| 727 | listeners.get(i).onGestureCancelled(this, event); |
| 728 | } |
| 729 | |
| 730 | clear(false); |
| 731 | } |
| 732 | |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 733 | private void fireOnGesturePerformed() { |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 734 | final ArrayList<OnGesturePerformedListener> actionListeners = mOnGesturePerformedListeners; |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 735 | final int count = actionListeners.size(); |
| 736 | for (int i = 0; i < count; i++) { |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 737 | actionListeners.get(i).onGesturePerformed(GestureOverlayView.this, mCurrentGesture); |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 738 | } |
Romain Guy | e7c36dd | 2009-05-25 13:51:00 -0700 | [diff] [blame] | 739 | } |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 740 | |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 741 | private class FadeOutRunnable implements Runnable { |
| 742 | boolean fireActionPerformed; |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 743 | boolean resetMultipleStrokes; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 744 | |
| 745 | public void run() { |
| 746 | if (mIsFadingOut) { |
| 747 | final long now = AnimationUtils.currentAnimationTimeMillis(); |
| 748 | final long duration = now - mFadingStart; |
| 749 | |
| 750 | if (duration > mFadeDuration) { |
| 751 | if (fireActionPerformed) { |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 752 | fireOnGesturePerformed(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 753 | } |
| 754 | |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 755 | mPreviousWasGesturing = false; |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 756 | mIsFadingOut = false; |
| 757 | mFadingHasStarted = false; |
| 758 | mPath.rewind(); |
| 759 | mCurrentGesture = null; |
| 760 | setPaintAlpha(255); |
| 761 | } else { |
| 762 | mFadingHasStarted = true; |
| 763 | float interpolatedTime = Math.max(0.0f, |
| 764 | Math.min(1.0f, duration / (float) mFadeDuration)); |
| 765 | mFadingAlpha = 1.0f - mInterpolator.getInterpolation(interpolatedTime); |
| 766 | setPaintAlpha((int) (255 * mFadingAlpha)); |
| 767 | postDelayed(this, FADE_ANIMATION_RATE); |
| 768 | } |
Romain Guy | 73d2589 | 2009-06-09 03:18:10 -0700 | [diff] [blame] | 769 | } else if (resetMultipleStrokes) { |
| 770 | mResetGesture = true; |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 771 | } else { |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 772 | fireOnGesturePerformed(); |
| 773 | |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 774 | mFadingHasStarted = false; |
| 775 | mPath.rewind(); |
| 776 | mCurrentGesture = null; |
Romain Guy | 834f039 | 2009-06-05 11:24:09 -0700 | [diff] [blame] | 777 | mPreviousWasGesturing = false; |
Romain Guy | ec25df9 | 2009-05-25 04:39:37 -0700 | [diff] [blame] | 778 | setPaintAlpha(255); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 779 | } |
Romain Guy | 9edc4e8 | 2009-05-25 19:08:31 -0700 | [diff] [blame] | 780 | |
Romain Guy | 8d78756 | 2009-05-29 15:02:55 -0700 | [diff] [blame] | 781 | invalidate(); |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 782 | } |
| 783 | } |
| 784 | |
Romain Guy | 9af0b4f | 2009-06-02 21:56:27 -0700 | [diff] [blame] | 785 | public static interface OnGesturingListener { |
| 786 | void onGesturingStarted(GestureOverlayView overlay); |
| 787 | |
| 788 | void onGesturingEnded(GestureOverlayView overlay); |
| 789 | } |
| 790 | |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 791 | public static interface OnGestureListener { |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 792 | void onGestureStarted(GestureOverlayView overlay, MotionEvent event); |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 793 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 794 | void onGesture(GestureOverlayView overlay, MotionEvent event); |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 795 | |
Romain Guy | d6a463a | 2009-05-21 23:10:10 -0700 | [diff] [blame] | 796 | void onGestureEnded(GestureOverlayView overlay, MotionEvent event); |
| 797 | |
| 798 | void onGestureCancelled(GestureOverlayView overlay, MotionEvent event); |
Romain Guy | db567c3 | 2009-05-21 16:23:21 -0700 | [diff] [blame] | 799 | } |
Romain Guy | 82f3495 | 2009-05-24 18:40:45 -0700 | [diff] [blame] | 800 | |
| 801 | public static interface OnGesturePerformedListener { |
| 802 | void onGesturePerformed(GestureOverlayView overlay, Gesture gesture); |
| 803 | } |
Yang Li | 35aa84b | 2009-05-18 18:29:05 -0700 | [diff] [blame] | 804 | } |