Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 1 | package com.android.systemui.statusbar.phone; |
| 2 | |
| 3 | import android.animation.TimeAnimator; |
| 4 | import android.animation.TimeAnimator.TimeListener; |
| 5 | import android.content.Context; |
| 6 | import android.content.res.Resources; |
| 7 | import android.util.AttributeSet; |
| 8 | import android.util.Log; |
| 9 | import android.view.MotionEvent; |
| 10 | import android.view.VelocityTracker; |
| 11 | import android.view.View; |
| 12 | import android.widget.FrameLayout; |
| 13 | |
| 14 | import com.android.systemui.R; |
| 15 | |
| 16 | public class PanelView extends FrameLayout { |
Daniel Sandler | bf4aa9d | 2012-08-15 10:49:28 -0400 | [diff] [blame] | 17 | public static final boolean DEBUG = false; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 18 | public static final String TAG = PanelView.class.getSimpleName(); |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 19 | public final void LOG(String fmt, Object... args) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 20 | if (!DEBUG) return; |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 21 | Log.v(TAG, (mViewName != null ? (mViewName + ": ") : "") + String.format(fmt, args)); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 22 | } |
| 23 | |
| 24 | public static final boolean BRAKES = false; |
| 25 | |
| 26 | private float mSelfExpandVelocityPx; // classic value: 2000px/s |
| 27 | private float mSelfCollapseVelocityPx; // classic value: 2000px/s (will be negated to collapse "up") |
| 28 | private float mFlingExpandMinVelocityPx; // classic value: 200px/s |
| 29 | private float mFlingCollapseMinVelocityPx; // classic value: 200px/s |
| 30 | private float mCollapseMinDisplayFraction; // classic value: 0.08 (25px/min(320px,480px) on G1) |
| 31 | private float mExpandMinDisplayFraction; // classic value: 0.5 (drag open halfway to expand) |
| 32 | private float mFlingGestureMaxXVelocityPx; // classic value: 150px/s |
| 33 | |
| 34 | private float mExpandAccelPx; // classic value: 2000px/s/s |
| 35 | private float mCollapseAccelPx; // classic value: 2000px/s/s (will be negated to collapse "up") |
| 36 | |
| 37 | private float mFlingGestureMaxOutputVelocityPx; // how fast can it really go? (should be a little |
| 38 | // faster than mSelfCollapseVelocityPx) |
| 39 | |
| 40 | private float mCollapseBrakingDistancePx = 200; // XXX Resource |
| 41 | private float mExpandBrakingDistancePx = 150; // XXX Resource |
| 42 | private float mBrakingSpeedPx = 150; // XXX Resource |
| 43 | |
| 44 | private View mHandleView; |
| 45 | private float mTouchOffset; |
| 46 | private float mExpandedFraction = 0; |
| 47 | private float mExpandedHeight = 0; |
| 48 | |
| 49 | private TimeAnimator mTimeAnimator; |
| 50 | private VelocityTracker mVelocityTracker; |
| 51 | |
| 52 | private int[] mAbsPos = new int[2]; |
| 53 | PanelBar mBar; |
| 54 | |
| 55 | private final TimeListener mAnimationCallback = new TimeListener() { |
| 56 | @Override |
| 57 | public void onTimeUpdate(TimeAnimator animation, long totalTime, long deltaTime) { |
| 58 | animationTick(deltaTime); |
| 59 | } |
| 60 | }; |
| 61 | |
| 62 | private float mVel, mAccel; |
| 63 | private int mFullHeight = 0; |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 64 | private String mViewName; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 65 | |
| 66 | private void animationTick(long dtms) { |
| 67 | if (!mTimeAnimator.isStarted()) { |
| 68 | // XXX HAX to work around bug in TimeAnimator.end() not resetting its last time |
| 69 | mTimeAnimator = new TimeAnimator(); |
| 70 | mTimeAnimator.setTimeListener(mAnimationCallback); |
| 71 | |
| 72 | mTimeAnimator.start(); |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 73 | } else if (dtms > 0) { |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 74 | final float dt = dtms * 0.001f; // ms -> s |
| 75 | LOG("tick: v=%.2fpx/s dt=%.4fs", mVel, dt); |
| 76 | LOG("tick: before: h=%d", (int) mExpandedHeight); |
| 77 | |
| 78 | final float fh = getFullHeight(); |
| 79 | final boolean closing = mExpandedHeight > 0 && mVel < 0; |
| 80 | boolean braking = false; |
| 81 | if (BRAKES) { |
| 82 | if (closing) { |
| 83 | braking = mExpandedHeight <= mCollapseBrakingDistancePx; |
| 84 | mAccel = braking ? 10*mCollapseAccelPx : -mCollapseAccelPx; |
| 85 | } else { |
| 86 | braking = mExpandedHeight >= (fh-mExpandBrakingDistancePx); |
| 87 | mAccel = braking ? 10*-mExpandAccelPx : mExpandAccelPx; |
| 88 | } |
| 89 | } else { |
| 90 | mAccel = closing ? -mCollapseAccelPx : mExpandAccelPx; |
| 91 | } |
| 92 | |
| 93 | mVel += mAccel * dt; |
| 94 | |
| 95 | if (braking) { |
| 96 | if (closing && mVel > -mBrakingSpeedPx) { |
| 97 | mVel = -mBrakingSpeedPx; |
| 98 | } else if (!closing && mVel < mBrakingSpeedPx) { |
| 99 | mVel = mBrakingSpeedPx; |
| 100 | } |
| 101 | } else { |
| 102 | if (closing && mVel > -mFlingCollapseMinVelocityPx) { |
| 103 | mVel = -mFlingCollapseMinVelocityPx; |
| 104 | } else if (!closing && mVel > mFlingGestureMaxOutputVelocityPx) { |
| 105 | mVel = mFlingGestureMaxOutputVelocityPx; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | float h = mExpandedHeight + mVel * dt; |
| 110 | |
| 111 | LOG("tick: new h=%d closing=%s", (int) h, closing?"true":"false"); |
| 112 | |
| 113 | setExpandedHeightInternal(h); |
| 114 | |
| 115 | mBar.panelExpansionChanged(PanelView.this, mExpandedFraction); |
| 116 | |
| 117 | if (mVel == 0 |
| 118 | || (closing && mExpandedHeight == 0) |
| 119 | || (!closing && mExpandedHeight == getFullHeight())) { |
| 120 | mTimeAnimator.end(); |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | public PanelView(Context context, AttributeSet attrs) { |
| 126 | super(context, attrs); |
| 127 | |
| 128 | mTimeAnimator = new TimeAnimator(); |
| 129 | mTimeAnimator.setTimeListener(mAnimationCallback); |
| 130 | } |
| 131 | |
| 132 | private void loadDimens() { |
| 133 | final Resources res = getContext().getResources(); |
| 134 | |
| 135 | mSelfExpandVelocityPx = res.getDimension(R.dimen.self_expand_velocity); |
| 136 | mSelfCollapseVelocityPx = res.getDimension(R.dimen.self_collapse_velocity); |
| 137 | mFlingExpandMinVelocityPx = res.getDimension(R.dimen.fling_expand_min_velocity); |
| 138 | mFlingCollapseMinVelocityPx = res.getDimension(R.dimen.fling_collapse_min_velocity); |
| 139 | |
| 140 | mCollapseMinDisplayFraction = res.getFraction(R.dimen.collapse_min_display_fraction, 1, 1); |
| 141 | mExpandMinDisplayFraction = res.getFraction(R.dimen.expand_min_display_fraction, 1, 1); |
| 142 | |
| 143 | mExpandAccelPx = res.getDimension(R.dimen.expand_accel); |
| 144 | mCollapseAccelPx = res.getDimension(R.dimen.collapse_accel); |
| 145 | |
| 146 | mFlingGestureMaxXVelocityPx = res.getDimension(R.dimen.fling_gesture_max_x_velocity); |
| 147 | |
| 148 | mFlingGestureMaxOutputVelocityPx = res.getDimension(R.dimen.fling_gesture_max_output_velocity); |
| 149 | } |
| 150 | |
| 151 | private void trackMovement(MotionEvent event) { |
| 152 | // Add movement to velocity tracker using raw screen X and Y coordinates instead |
| 153 | // of window coordinates because the window frame may be moving at the same time. |
| 154 | float deltaX = event.getRawX() - event.getX(); |
| 155 | float deltaY = event.getRawY() - event.getY(); |
| 156 | event.offsetLocation(deltaX, deltaY); |
| 157 | mVelocityTracker.addMovement(event); |
| 158 | event.offsetLocation(-deltaX, -deltaY); |
| 159 | } |
| 160 | |
| 161 | @Override |
| 162 | protected void onFinishInflate() { |
| 163 | super.onFinishInflate(); |
| 164 | loadDimens(); |
| 165 | |
| 166 | mHandleView = findViewById(R.id.handle); |
| 167 | LOG("handle view: " + mHandleView); |
| 168 | if (mHandleView != null) { |
| 169 | mHandleView.setOnTouchListener(new View.OnTouchListener() { |
| 170 | @Override |
| 171 | public boolean onTouch(View v, MotionEvent event) { |
| 172 | final float y = event.getY(); |
| 173 | final float rawY = event.getRawY(); |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 174 | LOG("handle.onTouch: a=%s y=%.1f rawY=%.1f off=%.1f", |
| 175 | MotionEvent.actionToString(event.getAction()), |
| 176 | y, rawY, mTouchOffset); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 177 | PanelView.this.getLocationOnScreen(mAbsPos); |
| 178 | |
| 179 | switch (event.getAction()) { |
| 180 | case MotionEvent.ACTION_DOWN: |
| 181 | mVelocityTracker = VelocityTracker.obtain(); |
| 182 | trackMovement(event); |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 183 | mBar.onTrackingStarted(PanelView.this); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 184 | mTouchOffset = (rawY - mAbsPos[1]) - PanelView.this.getExpandedHeight(); |
| 185 | break; |
| 186 | |
| 187 | case MotionEvent.ACTION_MOVE: |
| 188 | PanelView.this.setExpandedHeight(rawY - mAbsPos[1] - mTouchOffset); |
| 189 | |
| 190 | mBar.panelExpansionChanged(PanelView.this, mExpandedFraction); |
| 191 | |
| 192 | trackMovement(event); |
| 193 | break; |
| 194 | |
| 195 | case MotionEvent.ACTION_UP: |
| 196 | case MotionEvent.ACTION_CANCEL: |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 197 | mBar.onTrackingStopped(PanelView.this); |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 198 | trackMovement(event); |
| 199 | mVelocityTracker.computeCurrentVelocity(1000); |
| 200 | |
| 201 | float yVel = mVelocityTracker.getYVelocity(); |
| 202 | boolean negative = yVel < 0; |
| 203 | |
| 204 | float xVel = mVelocityTracker.getXVelocity(); |
| 205 | if (xVel < 0) { |
| 206 | xVel = -xVel; |
| 207 | } |
| 208 | if (xVel > mFlingGestureMaxXVelocityPx) { |
| 209 | xVel = mFlingGestureMaxXVelocityPx; // limit how much we care about the x axis |
| 210 | } |
| 211 | |
| 212 | float vel = (float)Math.hypot(yVel, xVel); |
| 213 | if (vel > mFlingGestureMaxOutputVelocityPx) { |
| 214 | vel = mFlingGestureMaxOutputVelocityPx; |
| 215 | } |
| 216 | if (negative) { |
| 217 | vel = -vel; |
| 218 | } |
| 219 | |
| 220 | LOG("gesture: vraw=(%f,%f) vnorm=(%f,%f) vlinear=%f", |
| 221 | mVelocityTracker.getXVelocity(), |
| 222 | mVelocityTracker.getYVelocity(), |
| 223 | xVel, yVel, |
| 224 | vel); |
| 225 | |
| 226 | fling(vel, false); |
| 227 | |
| 228 | mVelocityTracker.recycle(); |
| 229 | mVelocityTracker = null; |
| 230 | |
| 231 | break; |
| 232 | } |
| 233 | return true; |
| 234 | }}); |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | public void fling(float vel, boolean always) { |
| 239 | mVel = vel; |
| 240 | |
| 241 | if (mVel != 0) { |
| 242 | animationTick(0); // begin the animation |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | @Override |
| 247 | protected void onAttachedToWindow() { |
| 248 | super.onAttachedToWindow(); |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 249 | mViewName = getResources().getResourceName(getId()); |
| 250 | } |
| 251 | |
| 252 | public String getName() { |
| 253 | return mViewName; |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 254 | } |
| 255 | |
| 256 | @Override |
| 257 | protected void onViewAdded(View child) { |
| 258 | LOG("onViewAdded: " + child); |
| 259 | } |
| 260 | |
| 261 | public View getHandle() { |
| 262 | return mHandleView; |
| 263 | } |
| 264 | |
| 265 | // Rubberbands the panel to hold its contents. |
| 266 | @Override |
| 267 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| 268 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| 269 | |
| 270 | LOG("onMeasure(%d, %d) -> (%d, %d)", |
| 271 | widthMeasureSpec, heightMeasureSpec, getMeasuredWidth(), getMeasuredHeight()); |
| 272 | mFullHeight = getMeasuredHeight(); |
| 273 | heightMeasureSpec = MeasureSpec.makeMeasureSpec( |
| 274 | (int) mExpandedHeight, MeasureSpec.AT_MOST); // MeasureSpec.getMode(heightMeasureSpec)); |
| 275 | setMeasuredDimension(widthMeasureSpec, heightMeasureSpec); |
| 276 | } |
| 277 | |
| 278 | |
| 279 | public void setExpandedHeight(float height) { |
| 280 | mTimeAnimator.end(); |
| 281 | setExpandedHeightInternal(height); |
| 282 | } |
| 283 | |
| 284 | public void setExpandedHeightInternal(float h) { |
| 285 | float fh = getFullHeight(); |
| 286 | if (fh == 0) { |
| 287 | // Hmm, full height hasn't been computed yet |
| 288 | } |
| 289 | |
| 290 | LOG("setExpansion: height=%.1f fh=%.1f", h, fh); |
Daniel Sandler | 978f853 | 2012-08-15 15:48:16 -0400 | [diff] [blame^] | 291 | |
Daniel Sandler | 08d05e3 | 2012-08-08 16:39:54 -0400 | [diff] [blame] | 292 | if (h < 0) h = 0; |
| 293 | else if (h > fh) h = fh; |
| 294 | |
| 295 | mExpandedHeight = h; |
| 296 | |
| 297 | requestLayout(); |
| 298 | // FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) getLayoutParams(); |
| 299 | // lp.height = (int) mExpandedHeight; |
| 300 | // setLayoutParams(lp); |
| 301 | |
| 302 | mExpandedFraction = Math.min(1f, h / fh); |
| 303 | } |
| 304 | |
| 305 | private float getFullHeight() { |
| 306 | return mFullHeight; |
| 307 | } |
| 308 | |
| 309 | public void setExpandedFraction(float frac) { |
| 310 | setExpandedHeight(getFullHeight() * frac); |
| 311 | } |
| 312 | |
| 313 | public float getExpandedHeight() { |
| 314 | return mExpandedHeight; |
| 315 | } |
| 316 | |
| 317 | public float getExpandedFraction() { |
| 318 | return mExpandedFraction; |
| 319 | } |
| 320 | |
| 321 | public void setBar(PanelBar panelBar) { |
| 322 | mBar = panelBar; |
| 323 | } |
| 324 | |
| 325 | public void collapse() { |
| 326 | // TODO: abort animation or ongoing touch |
| 327 | if (mExpandedHeight > 0) { |
| 328 | fling(-mSelfCollapseVelocityPx, /*always=*/ true); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | public void expand() { |
| 333 | if (mExpandedHeight < getFullHeight()) { |
| 334 | fling (mSelfExpandVelocityPx, /*always=*/ true); |
| 335 | } |
| 336 | } |
| 337 | } |