Daniel Sandler | 50a5313 | 2012-10-24 15:02:27 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 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 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 17 | package com.android.systemui.statusbar.phone; |
| 18 | |
Daniel Sandler | 6f7654d | 2012-11-30 15:28:38 -0500 | [diff] [blame] | 19 | import java.util.ArrayDeque; |
| 20 | import java.util.ArrayList; |
| 21 | import java.util.Iterator; |
| 22 | |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 23 | import android.animation.ObjectAnimator; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 24 | import android.animation.TimeAnimator; |
| 25 | import android.animation.TimeAnimator.TimeListener; |
| 26 | import android.content.Context; |
| 27 | import android.content.res.Resources; |
| 28 | import android.util.AttributeSet; |
Daniel Sandler | bf526d1 | 2012-09-04 22:56:44 -0400 | [diff] [blame] | 29 | import android.util.Slog; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 30 | import android.view.MotionEvent; |
| 31 | import android.view.VelocityTracker; |
| 32 | import android.view.View; |
| 33 | import android.widget.FrameLayout; |
| 34 | |
| 35 | import com.android.systemui.R; |
| 36 | |
| 37 | public class PanelView extends FrameLayout { |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 38 | public static final boolean DEBUG = PanelBar.DEBUG; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 39 | public static final String TAG = PanelView.class.getSimpleName(); |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame] | 40 | public final void LOG(String fmt, Object... args) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 41 | if (!DEBUG) return; |
Daniel Sandler | bf526d1 | 2012-09-04 22:56:44 -0400 | [diff] [blame] | 42 | Slog.v(TAG, (mViewName != null ? (mViewName + ": ") : "") + String.format(fmt, args)); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | public static final boolean BRAKES = false; |
Daniel Sandler | efb0faf | 2012-10-10 14:15:34 -0700 | [diff] [blame] | 46 | private boolean mRubberbandingEnabled = true; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 47 | |
| 48 | private float mSelfExpandVelocityPx; // classic value: 2000px/s |
| 49 | private float mSelfCollapseVelocityPx; // classic value: 2000px/s (will be negated to collapse "up") |
| 50 | private float mFlingExpandMinVelocityPx; // classic value: 200px/s |
| 51 | private float mFlingCollapseMinVelocityPx; // classic value: 200px/s |
| 52 | private float mCollapseMinDisplayFraction; // classic value: 0.08 (25px/min(320px,480px) on G1) |
| 53 | private float mExpandMinDisplayFraction; // classic value: 0.5 (drag open halfway to expand) |
| 54 | private float mFlingGestureMaxXVelocityPx; // classic value: 150px/s |
| 55 | |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 56 | private float mFlingGestureMinDistPx; |
| 57 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 58 | private float mExpandAccelPx; // classic value: 2000px/s/s |
| 59 | private float mCollapseAccelPx; // classic value: 2000px/s/s (will be negated to collapse "up") |
| 60 | |
| 61 | private float mFlingGestureMaxOutputVelocityPx; // how fast can it really go? (should be a little |
| 62 | // faster than mSelfCollapseVelocityPx) |
| 63 | |
| 64 | private float mCollapseBrakingDistancePx = 200; // XXX Resource |
| 65 | private float mExpandBrakingDistancePx = 150; // XXX Resource |
| 66 | private float mBrakingSpeedPx = 150; // XXX Resource |
| 67 | |
| 68 | private View mHandleView; |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 69 | private float mPeekHeight; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 70 | private float mTouchOffset; |
| 71 | private float mExpandedFraction = 0; |
| 72 | private float mExpandedHeight = 0; |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 73 | private boolean mJustPeeked; |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 74 | private boolean mClosing; |
| 75 | private boolean mRubberbanding; |
| 76 | private boolean mTracking; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 77 | |
| 78 | private TimeAnimator mTimeAnimator; |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 79 | private ObjectAnimator mPeekAnimator; |
Daniel Sandler | 6f7654d | 2012-11-30 15:28:38 -0500 | [diff] [blame] | 80 | private FlingTracker mVelocityTracker; |
| 81 | |
| 82 | /** |
| 83 | * A very simple low-pass velocity filter for motion events; not nearly as sophisticated as |
| 84 | * VelocityTracker but optimized for the kinds of gestures we expect to see in status bar |
| 85 | * panels. |
| 86 | */ |
| 87 | private static class FlingTracker { |
| 88 | static final boolean DEBUG = false; |
| 89 | final int MAX_EVENTS = 8; |
| 90 | final float DECAY = 0.75f; |
| 91 | ArrayDeque<MotionEventCopy> mEventBuf = new ArrayDeque<MotionEventCopy>(MAX_EVENTS); |
| 92 | float mVX, mVY = 0; |
| 93 | private static class MotionEventCopy { |
| 94 | public MotionEventCopy(float x2, float y2, long eventTime) { |
| 95 | this.x = x2; |
| 96 | this.y = y2; |
| 97 | this.t = eventTime; |
| 98 | } |
| 99 | public float x, y; |
| 100 | public long t; |
| 101 | } |
| 102 | public FlingTracker() { |
| 103 | } |
| 104 | public void addMovement(MotionEvent event) { |
| 105 | if (mEventBuf.size() == MAX_EVENTS) { |
| 106 | mEventBuf.remove(); |
| 107 | } |
| 108 | mEventBuf.add(new MotionEventCopy(event.getX(), event.getY(), event.getEventTime())); |
| 109 | } |
| 110 | public void computeCurrentVelocity(long timebase) { |
| 111 | if (FlingTracker.DEBUG) { |
| 112 | Slog.v("FlingTracker", "computing velocities for " + mEventBuf.size() + " events"); |
| 113 | } |
| 114 | mVX = mVY = 0; |
| 115 | MotionEventCopy last = null; |
| 116 | int i = 0; |
| 117 | float totalweight = 0f; |
| 118 | float weight = 10f; |
| 119 | for (final Iterator<MotionEventCopy> iter = mEventBuf.descendingIterator(); |
| 120 | iter.hasNext();) { |
| 121 | final MotionEventCopy event = iter.next(); |
| 122 | if (last != null) { |
| 123 | final float dt = (float) (event.t - last.t) / timebase; |
| 124 | final float dx = (event.x - last.x); |
| 125 | final float dy = (event.y - last.y); |
| 126 | if (FlingTracker.DEBUG) { |
| 127 | Slog.v("FlingTracker", String.format(" [%d] dx=%.1f dy=%.1f dt=%.0f vx=%.1f vy=%.1f", |
| 128 | i, |
| 129 | dx, dy, dt, |
| 130 | (dx/dt), |
| 131 | (dy/dt) |
| 132 | )); |
| 133 | } |
| 134 | mVX += weight * dx / dt; |
| 135 | mVY += weight * dy / dt; |
| 136 | totalweight += weight; |
| 137 | weight *= DECAY; |
| 138 | } |
| 139 | last = event; |
| 140 | i++; |
| 141 | } |
| 142 | mVX /= totalweight; |
| 143 | mVY /= totalweight; |
| 144 | |
| 145 | if (FlingTracker.DEBUG) { |
| 146 | Slog.v("FlingTracker", "computed: vx=" + mVX + " vy=" + mVY); |
| 147 | } |
| 148 | } |
| 149 | public float getXVelocity() { |
| 150 | return mVX; |
| 151 | } |
| 152 | public float getYVelocity() { |
| 153 | return mVY; |
| 154 | } |
| 155 | public void recycle() { |
| 156 | mEventBuf.clear(); |
| 157 | } |
| 158 | |
| 159 | static FlingTracker sTracker; |
| 160 | static FlingTracker obtain() { |
| 161 | if (sTracker == null) { |
| 162 | sTracker = new FlingTracker(); |
| 163 | } |
| 164 | return sTracker; |
| 165 | } |
| 166 | } |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 167 | |
| 168 | private int[] mAbsPos = new int[2]; |
| 169 | PanelBar mBar; |
| 170 | |
| 171 | private final TimeListener mAnimationCallback = new TimeListener() { |
| 172 | @Override |
| 173 | public void onTimeUpdate(TimeAnimator animation, long totalTime, long deltaTime) { |
| 174 | animationTick(deltaTime); |
| 175 | } |
| 176 | }; |
| 177 | |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 178 | private final Runnable mStopAnimator = new Runnable() { |
| 179 | @Override |
| 180 | public void run() { |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 181 | if (mTimeAnimator != null && mTimeAnimator.isStarted()) { |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 182 | mTimeAnimator.end(); |
| 183 | mRubberbanding = false; |
| 184 | mClosing = false; |
| 185 | } |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 186 | } |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 187 | }; |
Daniel Sandler | 5a35a0d | 2012-08-16 13:50:40 -0400 | [diff] [blame] | 188 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 189 | private float mVel, mAccel; |
| 190 | private int mFullHeight = 0; |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 191 | private String mViewName; |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 192 | protected float mInitialTouchY; |
| 193 | protected float mFinalTouchY; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 194 | |
Daniel Sandler | efb0faf | 2012-10-10 14:15:34 -0700 | [diff] [blame] | 195 | public void setRubberbandingEnabled(boolean enable) { |
| 196 | mRubberbandingEnabled = enable; |
| 197 | } |
| 198 | |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 199 | private void runPeekAnimation() { |
| 200 | if (DEBUG) LOG("peek to height=%.1f", mPeekHeight); |
| 201 | if (mTimeAnimator.isStarted()) { |
| 202 | return; |
| 203 | } |
| 204 | if (mPeekAnimator == null) { |
| 205 | mPeekAnimator = ObjectAnimator.ofFloat(this, |
| 206 | "expandedHeight", mPeekHeight) |
Daniel Sandler | 3679bf5 | 2012-10-16 21:30:28 -0400 | [diff] [blame] | 207 | .setDuration(250); |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 208 | } |
| 209 | mPeekAnimator.start(); |
| 210 | } |
| 211 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 212 | private void animationTick(long dtms) { |
| 213 | if (!mTimeAnimator.isStarted()) { |
| 214 | // XXX HAX to work around bug in TimeAnimator.end() not resetting its last time |
| 215 | mTimeAnimator = new TimeAnimator(); |
| 216 | mTimeAnimator.setTimeListener(mAnimationCallback); |
| 217 | |
Daniel Sandler | a801f68 | 2012-10-05 11:01:05 -0400 | [diff] [blame] | 218 | if (mPeekAnimator != null) mPeekAnimator.cancel(); |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 219 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 220 | mTimeAnimator.start(); |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 221 | |
Daniel Sandler | efb0faf | 2012-10-10 14:15:34 -0700 | [diff] [blame] | 222 | mRubberbanding = mRubberbandingEnabled // is it enabled at all? |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 223 | && mExpandedHeight > getFullHeight() // are we past the end? |
| 224 | && mVel >= -mFlingGestureMinDistPx; // was this not possibly a "close" gesture? |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 225 | if (mRubberbanding) { |
| 226 | mClosing = true; |
| 227 | } else if (mVel == 0) { |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 228 | // if the panel is less than halfway open, close it |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 229 | mClosing = (mFinalTouchY / getFullHeight()) < 0.5f; |
| 230 | } else { |
| 231 | mClosing = mExpandedHeight > 0 && mVel < 0; |
| 232 | } |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame] | 233 | } else if (dtms > 0) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 234 | final float dt = dtms * 0.001f; // ms -> s |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 235 | if (DEBUG) LOG("tick: v=%.2fpx/s dt=%.4fs", mVel, dt); |
| 236 | if (DEBUG) LOG("tick: before: h=%d", (int) mExpandedHeight); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 237 | |
| 238 | final float fh = getFullHeight(); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 239 | boolean braking = false; |
| 240 | if (BRAKES) { |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 241 | if (mClosing) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 242 | braking = mExpandedHeight <= mCollapseBrakingDistancePx; |
| 243 | mAccel = braking ? 10*mCollapseAccelPx : -mCollapseAccelPx; |
| 244 | } else { |
| 245 | braking = mExpandedHeight >= (fh-mExpandBrakingDistancePx); |
| 246 | mAccel = braking ? 10*-mExpandAccelPx : mExpandAccelPx; |
| 247 | } |
| 248 | } else { |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 249 | mAccel = mClosing ? -mCollapseAccelPx : mExpandAccelPx; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | mVel += mAccel * dt; |
| 253 | |
| 254 | if (braking) { |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 255 | if (mClosing && mVel > -mBrakingSpeedPx) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 256 | mVel = -mBrakingSpeedPx; |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 257 | } else if (!mClosing && mVel < mBrakingSpeedPx) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 258 | mVel = mBrakingSpeedPx; |
| 259 | } |
| 260 | } else { |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 261 | if (mClosing && mVel > -mFlingCollapseMinVelocityPx) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 262 | mVel = -mFlingCollapseMinVelocityPx; |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 263 | } else if (!mClosing && mVel > mFlingGestureMaxOutputVelocityPx) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 264 | mVel = mFlingGestureMaxOutputVelocityPx; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | float h = mExpandedHeight + mVel * dt; |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 269 | |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 270 | if (mRubberbanding && h < fh) { |
| 271 | h = fh; |
| 272 | } |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 273 | |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 274 | if (DEBUG) LOG("tick: new h=%d closing=%s", (int) h, mClosing?"true":"false"); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 275 | |
| 276 | setExpandedHeightInternal(h); |
| 277 | |
| 278 | mBar.panelExpansionChanged(PanelView.this, mExpandedFraction); |
| 279 | |
| 280 | if (mVel == 0 |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 281 | || (mClosing && mExpandedHeight == 0) |
| 282 | || ((mRubberbanding || !mClosing) && mExpandedHeight == fh)) { |
Daniel Sandler | 5a35a0d | 2012-08-16 13:50:40 -0400 | [diff] [blame] | 283 | post(mStopAnimator); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 284 | } |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | public PanelView(Context context, AttributeSet attrs) { |
| 289 | super(context, attrs); |
| 290 | |
| 291 | mTimeAnimator = new TimeAnimator(); |
| 292 | mTimeAnimator.setTimeListener(mAnimationCallback); |
| 293 | } |
| 294 | |
| 295 | private void loadDimens() { |
| 296 | final Resources res = getContext().getResources(); |
| 297 | |
| 298 | mSelfExpandVelocityPx = res.getDimension(R.dimen.self_expand_velocity); |
| 299 | mSelfCollapseVelocityPx = res.getDimension(R.dimen.self_collapse_velocity); |
| 300 | mFlingExpandMinVelocityPx = res.getDimension(R.dimen.fling_expand_min_velocity); |
| 301 | mFlingCollapseMinVelocityPx = res.getDimension(R.dimen.fling_collapse_min_velocity); |
| 302 | |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 303 | mFlingGestureMinDistPx = res.getDimension(R.dimen.fling_gesture_min_dist); |
| 304 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 305 | mCollapseMinDisplayFraction = res.getFraction(R.dimen.collapse_min_display_fraction, 1, 1); |
| 306 | mExpandMinDisplayFraction = res.getFraction(R.dimen.expand_min_display_fraction, 1, 1); |
| 307 | |
| 308 | mExpandAccelPx = res.getDimension(R.dimen.expand_accel); |
| 309 | mCollapseAccelPx = res.getDimension(R.dimen.collapse_accel); |
| 310 | |
| 311 | mFlingGestureMaxXVelocityPx = res.getDimension(R.dimen.fling_gesture_max_x_velocity); |
| 312 | |
| 313 | mFlingGestureMaxOutputVelocityPx = res.getDimension(R.dimen.fling_gesture_max_output_velocity); |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 314 | |
Daniel Sandler | 3679bf5 | 2012-10-16 21:30:28 -0400 | [diff] [blame] | 315 | mPeekHeight = res.getDimension(R.dimen.peek_height) |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 316 | + getPaddingBottom() // our window might have a dropshadow |
| 317 | - (mHandleView == null ? 0 : mHandleView.getPaddingTop()); // the handle might have a topshadow |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 318 | } |
| 319 | |
| 320 | private void trackMovement(MotionEvent event) { |
| 321 | // Add movement to velocity tracker using raw screen X and Y coordinates instead |
| 322 | // of window coordinates because the window frame may be moving at the same time. |
| 323 | float deltaX = event.getRawX() - event.getX(); |
| 324 | float deltaY = event.getRawY() - event.getY(); |
| 325 | event.offsetLocation(deltaX, deltaY); |
Daniel Sandler | b17a726 | 2012-10-05 14:32:50 -0400 | [diff] [blame] | 326 | if (mVelocityTracker != null) mVelocityTracker.addMovement(event); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 327 | event.offsetLocation(-deltaX, -deltaY); |
| 328 | } |
| 329 | |
Daniel Sandler | bf526d1 | 2012-09-04 22:56:44 -0400 | [diff] [blame] | 330 | // Pass all touches along to the handle, allowing the user to drag the panel closed from its interior |
| 331 | @Override |
| 332 | public boolean onTouchEvent(MotionEvent event) { |
| 333 | return mHandleView.dispatchTouchEvent(event); |
| 334 | } |
| 335 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 336 | @Override |
| 337 | protected void onFinishInflate() { |
| 338 | super.onFinishInflate(); |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 339 | mHandleView = findViewById(R.id.handle); |
| 340 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 341 | loadDimens(); |
| 342 | |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 343 | if (DEBUG) LOG("handle view: " + mHandleView); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 344 | if (mHandleView != null) { |
| 345 | mHandleView.setOnTouchListener(new View.OnTouchListener() { |
| 346 | @Override |
| 347 | public boolean onTouch(View v, MotionEvent event) { |
| 348 | final float y = event.getY(); |
| 349 | final float rawY = event.getRawY(); |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 350 | if (DEBUG) LOG("handle.onTouch: a=%s y=%.1f rawY=%.1f off=%.1f", |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame] | 351 | MotionEvent.actionToString(event.getAction()), |
| 352 | y, rawY, mTouchOffset); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 353 | PanelView.this.getLocationOnScreen(mAbsPos); |
| 354 | |
| 355 | switch (event.getAction()) { |
| 356 | case MotionEvent.ACTION_DOWN: |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 357 | mTracking = true; |
Daniel Sandler | 13522a2 | 2012-09-27 14:46:58 -0400 | [diff] [blame] | 358 | mHandleView.setPressed(true); |
Daniel Sandler | 040c2e4 | 2012-10-17 00:56:33 -0400 | [diff] [blame] | 359 | postInvalidate(); // catch the press state change |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 360 | mInitialTouchY = y; |
Daniel Sandler | 6f7654d | 2012-11-30 15:28:38 -0500 | [diff] [blame] | 361 | mVelocityTracker = FlingTracker.obtain(); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 362 | trackMovement(event); |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 363 | mTimeAnimator.cancel(); // end any outstanding animations |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame] | 364 | mBar.onTrackingStarted(PanelView.this); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 365 | mTouchOffset = (rawY - mAbsPos[1]) - PanelView.this.getExpandedHeight(); |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 366 | if (mExpandedHeight == 0) { |
| 367 | mJustPeeked = true; |
| 368 | runPeekAnimation(); |
| 369 | } |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 370 | break; |
| 371 | |
| 372 | case MotionEvent.ACTION_MOVE: |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 373 | final float h = rawY - mAbsPos[1] - mTouchOffset; |
| 374 | if (h > mPeekHeight) { |
Daniel Sandler | a801f68 | 2012-10-05 11:01:05 -0400 | [diff] [blame] | 375 | if (mPeekAnimator != null && mPeekAnimator.isRunning()) { |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 376 | mPeekAnimator.cancel(); |
| 377 | } |
| 378 | mJustPeeked = false; |
| 379 | } |
| 380 | if (!mJustPeeked) { |
| 381 | PanelView.this.setExpandedHeightInternal(h); |
| 382 | mBar.panelExpansionChanged(PanelView.this, mExpandedFraction); |
| 383 | } |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 384 | |
| 385 | trackMovement(event); |
| 386 | break; |
| 387 | |
| 388 | case MotionEvent.ACTION_UP: |
| 389 | case MotionEvent.ACTION_CANCEL: |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 390 | mFinalTouchY = y; |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 391 | mTracking = false; |
Daniel Sandler | 13522a2 | 2012-09-27 14:46:58 -0400 | [diff] [blame] | 392 | mHandleView.setPressed(false); |
Daniel Sandler | 040c2e4 | 2012-10-17 00:56:33 -0400 | [diff] [blame] | 393 | postInvalidate(); // catch the press state change |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame] | 394 | mBar.onTrackingStopped(PanelView.this); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 395 | trackMovement(event); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 396 | |
Daniel Sandler | 9d09824 | 2012-10-07 23:27:30 -0400 | [diff] [blame] | 397 | float vel = 0, yVel = 0, xVel = 0; |
| 398 | boolean negative = false; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 399 | |
Daniel Sandler | 9d09824 | 2012-10-07 23:27:30 -0400 | [diff] [blame] | 400 | if (mVelocityTracker != null) { |
| 401 | // the velocitytracker might be null if we got a bad input stream |
| 402 | mVelocityTracker.computeCurrentVelocity(1000); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 403 | |
Daniel Sandler | 9d09824 | 2012-10-07 23:27:30 -0400 | [diff] [blame] | 404 | yVel = mVelocityTracker.getYVelocity(); |
| 405 | negative = yVel < 0; |
| 406 | |
| 407 | xVel = mVelocityTracker.getXVelocity(); |
| 408 | if (xVel < 0) { |
| 409 | xVel = -xVel; |
| 410 | } |
| 411 | if (xVel > mFlingGestureMaxXVelocityPx) { |
| 412 | xVel = mFlingGestureMaxXVelocityPx; // limit how much we care about the x axis |
| 413 | } |
| 414 | |
| 415 | vel = (float)Math.hypot(yVel, xVel); |
| 416 | if (vel > mFlingGestureMaxOutputVelocityPx) { |
| 417 | vel = mFlingGestureMaxOutputVelocityPx; |
| 418 | } |
| 419 | |
| 420 | mVelocityTracker.recycle(); |
| 421 | mVelocityTracker = null; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 422 | } |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 423 | |
| 424 | // if you've barely moved your finger, we treat the velocity as 0 |
| 425 | // preventing spurious flings due to touch screen jitter |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 426 | final float deltaY = Math.abs(mFinalTouchY - mInitialTouchY); |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 427 | if (deltaY < mFlingGestureMinDistPx |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 428 | || vel < mFlingExpandMinVelocityPx |
Daniel Sandler | be2cf32 | 2012-10-24 15:23:42 -0400 | [diff] [blame] | 429 | ) { |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 430 | vel = 0; |
| 431 | } |
| 432 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 433 | if (negative) { |
| 434 | vel = -vel; |
| 435 | } |
| 436 | |
Daniel Sandler | be2cf32 | 2012-10-24 15:23:42 -0400 | [diff] [blame] | 437 | if (DEBUG) LOG("gesture: dy=%f vel=(%f,%f) vlinear=%f", |
Daniel Sandler | 173bae2 | 2012-09-25 14:37:42 -0400 | [diff] [blame] | 438 | deltaY, |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 439 | xVel, yVel, |
| 440 | vel); |
| 441 | |
Daniel Sandler | cf591db | 2012-08-15 16:11:55 -0400 | [diff] [blame] | 442 | fling(vel, true); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 443 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 444 | break; |
| 445 | } |
| 446 | return true; |
| 447 | }}); |
| 448 | } |
| 449 | } |
| 450 | |
| 451 | public void fling(float vel, boolean always) { |
Daniel Sandler | 750bb9b | 2012-10-03 16:24:00 -0400 | [diff] [blame] | 452 | if (DEBUG) LOG("fling: vel=%.3f, this=%s", vel, this); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 453 | mVel = vel; |
| 454 | |
Daniel Sandler | cf591db | 2012-08-15 16:11:55 -0400 | [diff] [blame] | 455 | if (always||mVel != 0) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 456 | animationTick(0); // begin the animation |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | @Override |
| 461 | protected void onAttachedToWindow() { |
| 462 | super.onAttachedToWindow(); |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame] | 463 | mViewName = getResources().getResourceName(getId()); |
| 464 | } |
| 465 | |
| 466 | public String getName() { |
| 467 | return mViewName; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 468 | } |
| 469 | |
| 470 | @Override |
| 471 | protected void onViewAdded(View child) { |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 472 | if (DEBUG) LOG("onViewAdded: " + child); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | public View getHandle() { |
| 476 | return mHandleView; |
| 477 | } |
| 478 | |
| 479 | // Rubberbands the panel to hold its contents. |
| 480 | @Override |
| 481 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| 482 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| 483 | |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 484 | if (DEBUG) LOG("onMeasure(%d, %d) -> (%d, %d)", |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 485 | widthMeasureSpec, heightMeasureSpec, getMeasuredWidth(), getMeasuredHeight()); |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 486 | |
| 487 | // Did one of our children change size? |
| 488 | int newHeight = getMeasuredHeight(); |
| 489 | if (newHeight != mFullHeight) { |
| 490 | mFullHeight = newHeight; |
| 491 | // If the user isn't actively poking us, let's rubberband to the content |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 492 | if (!mTracking && !mRubberbanding && !mTimeAnimator.isStarted() |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 493 | && mExpandedHeight > 0 && mExpandedHeight != mFullHeight) { |
| 494 | mExpandedHeight = mFullHeight; |
| 495 | } |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 496 | } |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 497 | heightMeasureSpec = MeasureSpec.makeMeasureSpec( |
| 498 | (int) mExpandedHeight, MeasureSpec.AT_MOST); // MeasureSpec.getMode(heightMeasureSpec)); |
| 499 | setMeasuredDimension(widthMeasureSpec, heightMeasureSpec); |
| 500 | } |
| 501 | |
| 502 | |
| 503 | public void setExpandedHeight(float height) { |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 504 | if (DEBUG) LOG("setExpandedHeight(%.1f)", height); |
Daniel Sandler | a801f68 | 2012-10-05 11:01:05 -0400 | [diff] [blame] | 505 | mRubberbanding = false; |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 506 | if (mTimeAnimator.isRunning()) { |
| 507 | post(mStopAnimator); |
| 508 | } |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 509 | setExpandedHeightInternal(height); |
Daniel Sandler | 0c1b75c | 2012-10-04 12:08:54 -0400 | [diff] [blame] | 510 | mBar.panelExpansionChanged(PanelView.this, mExpandedFraction); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 511 | } |
| 512 | |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 513 | @Override |
| 514 | protected void onLayout (boolean changed, int left, int top, int right, int bottom) { |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 515 | if (DEBUG) LOG("onLayout: changed=%s, bottom=%d eh=%d fh=%d", changed?"T":"f", bottom, (int)mExpandedHeight, mFullHeight); |
Daniel Sandler | 5050813 | 2012-08-16 14:10:53 -0400 | [diff] [blame] | 516 | super.onLayout(changed, left, top, right, bottom); |
| 517 | } |
| 518 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 519 | public void setExpandedHeightInternal(float h) { |
| 520 | float fh = getFullHeight(); |
| 521 | if (fh == 0) { |
| 522 | // Hmm, full height hasn't been computed yet |
| 523 | } |
| 524 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 525 | if (h < 0) h = 0; |
Daniel Sandler | efb0faf | 2012-10-10 14:15:34 -0700 | [diff] [blame] | 526 | if (!(mRubberbandingEnabled && (mTracking || mRubberbanding)) && h > fh) h = fh; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 527 | mExpandedHeight = h; |
| 528 | |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 529 | if (DEBUG) LOG("setExpansion: height=%.1f fh=%.1f tracking=%s rubber=%s", h, fh, mTracking?"T":"f", mRubberbanding?"T":"f"); |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 530 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 531 | requestLayout(); |
| 532 | // FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams(); |
| 533 | // lp.height = (int) mExpandedHeight; |
| 534 | // setLayoutParams(lp); |
| 535 | |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 536 | mExpandedFraction = Math.min(1f, (fh == 0) ? 0 : h / fh); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 537 | } |
| 538 | |
| 539 | private float getFullHeight() { |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 540 | if (mFullHeight <= 0) { |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 541 | if (DEBUG) LOG("Forcing measure() since fullHeight=" + mFullHeight); |
| 542 | measure(MeasureSpec.makeMeasureSpec(android.view.ViewGroup.LayoutParams.WRAP_CONTENT, MeasureSpec.EXACTLY), |
| 543 | MeasureSpec.makeMeasureSpec(android.view.ViewGroup.LayoutParams.WRAP_CONTENT, MeasureSpec.EXACTLY)); |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 544 | } |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 545 | return mFullHeight; |
| 546 | } |
| 547 | |
| 548 | public void setExpandedFraction(float frac) { |
| 549 | setExpandedHeight(getFullHeight() * frac); |
| 550 | } |
| 551 | |
| 552 | public float getExpandedHeight() { |
| 553 | return mExpandedHeight; |
| 554 | } |
| 555 | |
| 556 | public float getExpandedFraction() { |
| 557 | return mExpandedFraction; |
| 558 | } |
| 559 | |
Daniel Sandler | b4e56ed | 2012-09-12 23:07:44 -0700 | [diff] [blame] | 560 | public boolean isFullyExpanded() { |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 561 | return mExpandedHeight >= getFullHeight(); |
Daniel Sandler | b4e56ed | 2012-09-12 23:07:44 -0700 | [diff] [blame] | 562 | } |
| 563 | |
| 564 | public boolean isFullyCollapsed() { |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 565 | return mExpandedHeight <= 0; |
| 566 | } |
| 567 | |
| 568 | public boolean isCollapsing() { |
| 569 | return mClosing; |
Daniel Sandler | b4e56ed | 2012-09-12 23:07:44 -0700 | [diff] [blame] | 570 | } |
| 571 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 572 | public void setBar(PanelBar panelBar) { |
| 573 | mBar = panelBar; |
| 574 | } |
| 575 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 576 | public void collapse() { |
| 577 | // TODO: abort animation or ongoing touch |
Daniel Sandler | 750bb9b | 2012-10-03 16:24:00 -0400 | [diff] [blame] | 578 | if (DEBUG) LOG("collapse: " + this); |
Daniel Sandler | b4e56ed | 2012-09-12 23:07:44 -0700 | [diff] [blame] | 579 | if (!isFullyCollapsed()) { |
Daniel Sandler | 750bb9b | 2012-10-03 16:24:00 -0400 | [diff] [blame] | 580 | mTimeAnimator.cancel(); |
| 581 | mClosing = true; |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 582 | // collapse() should never be a rubberband, even if an animation is already running |
| 583 | mRubberbanding = false; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 584 | fling(-mSelfCollapseVelocityPx, /*always=*/ true); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | public void expand() { |
Daniel Sandler | 750bb9b | 2012-10-03 16:24:00 -0400 | [diff] [blame] | 589 | if (DEBUG) LOG("expand: " + this); |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 590 | if (isFullyCollapsed()) { |
| 591 | mBar.startOpeningPanel(this); |
Daniel Sandler | 750bb9b | 2012-10-03 16:24:00 -0400 | [diff] [blame] | 592 | fling(mSelfExpandVelocityPx, /*always=*/ true); |
Daniel Sandler | 198a030 | 2012-08-17 16:04:31 -0400 | [diff] [blame] | 593 | } else if (DEBUG) { |
Daniel Sandler | 67eab79 | 2012-10-02 17:08:23 -0400 | [diff] [blame] | 594 | if (DEBUG) LOG("skipping expansion: is expanded"); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 595 | } |
| 596 | } |
| 597 | } |