TaskView.java revision a26fb7822ddf3511796279b847cc216bee9e7f70
1/* 2 * Copyright (C) 2014 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 17package com.android.systemui.recents.views; 18 19import android.animation.ObjectAnimator; 20import android.animation.TimeInterpolator; 21import android.animation.ValueAnimator; 22import android.content.Context; 23import android.graphics.Canvas; 24import android.graphics.Outline; 25import android.graphics.Path; 26import android.graphics.Point; 27import android.graphics.Rect; 28import android.graphics.RectF; 29import android.util.AttributeSet; 30import android.view.MotionEvent; 31import android.view.View; 32import android.view.ViewParent; 33import android.view.animation.AccelerateInterpolator; 34import android.widget.FrameLayout; 35import com.android.systemui.R; 36import com.android.systemui.recents.Console; 37import com.android.systemui.recents.Constants; 38import com.android.systemui.recents.RecentsConfiguration; 39import com.android.systemui.recents.model.Task; 40 41 42/* A task view */ 43public class TaskView extends FrameLayout implements Task.TaskCallbacks, View.OnClickListener, 44 View.OnLongClickListener { 45 /** The TaskView callbacks */ 46 interface TaskViewCallbacks { 47 public void onTaskIconClicked(TaskView tv); 48 public void onTaskAppInfoClicked(TaskView tv); 49 public void onTaskFocused(TaskView tv); 50 public void onTaskDismissed(TaskView tv); 51 } 52 53 RecentsConfiguration mConfig; 54 55 int mDim; 56 int mMaxDim; 57 TimeInterpolator mDimInterpolator = new AccelerateInterpolator(); 58 59 Task mTask; 60 boolean mTaskDataLoaded; 61 boolean mIsFocused; 62 boolean mClipViewInStack; 63 Point mLastTouchDown = new Point(); 64 Path mRoundedRectClipPath = new Path(); 65 Rect mTmpRect = new Rect(); 66 67 TaskThumbnailView mThumbnailView; 68 TaskBarView mBarView; 69 TaskViewCallbacks mCb; 70 71 // Optimizations 72 ValueAnimator.AnimatorUpdateListener mUpdateDimListener = 73 new ValueAnimator.AnimatorUpdateListener() { 74 @Override 75 public void onAnimationUpdate(ValueAnimator animation) { 76 updateDimOverlayFromScale(); 77 } 78 }; 79 80 81 public TaskView(Context context) { 82 this(context, null); 83 } 84 85 public TaskView(Context context, AttributeSet attrs) { 86 this(context, attrs, 0); 87 } 88 89 public TaskView(Context context, AttributeSet attrs, int defStyleAttr) { 90 this(context, attrs, defStyleAttr, 0); 91 } 92 93 public TaskView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 94 super(context, attrs, defStyleAttr, defStyleRes); 95 mConfig = RecentsConfiguration.getInstance(); 96 setWillNotDraw(false); 97 setDim(getDim()); 98 } 99 100 @Override 101 protected void onFinishInflate() { 102 mMaxDim = mConfig.taskStackMaxDim; 103 104 // By default, all views are clipped to other views in their stack 105 mClipViewInStack = true; 106 107 // Bind the views 108 mThumbnailView = (TaskThumbnailView) findViewById(R.id.task_view_thumbnail); 109 mBarView = (TaskBarView) findViewById(R.id.task_view_bar); 110 111 if (mTaskDataLoaded) { 112 onTaskDataLoaded(false); 113 } 114 } 115 116 @Override 117 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 118 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 119 120 // Update the rounded rect clip path 121 float radius = mConfig.taskViewRoundedCornerRadiusPx; 122 mRoundedRectClipPath.reset(); 123 mRoundedRectClipPath.addRoundRect(new RectF(0, 0, getMeasuredWidth(), getMeasuredHeight()), 124 radius, radius, Path.Direction.CW); 125 126 // Update the outline 127 Outline o = new Outline(); 128 o.setRoundRect(0, 0, getMeasuredWidth(), getMeasuredHeight() - 129 mConfig.taskViewShadowOutlineBottomInsetPx, radius); 130 setOutline(o); 131 } 132 133 @Override 134 public boolean onInterceptTouchEvent(MotionEvent ev) { 135 switch (ev.getAction()) { 136 case MotionEvent.ACTION_DOWN: 137 case MotionEvent.ACTION_MOVE: 138 mLastTouchDown.set((int) ev.getX(), (int) ev.getY()); 139 break; 140 } 141 return super.onInterceptTouchEvent(ev); 142 } 143 144 /** Set callback */ 145 void setCallbacks(TaskViewCallbacks cb) { 146 mCb = cb; 147 } 148 149 /** Gets the task */ 150 Task getTask() { 151 return mTask; 152 } 153 154 /** Synchronizes this view's properties with the task's transform */ 155 void updateViewPropertiesToTaskTransform(TaskViewTransform animateFromTransform, 156 TaskViewTransform toTransform, int duration) { 157 if (Console.Enabled) { 158 Console.log(Constants.Log.UI.Draw, "[TaskView|updateViewPropertiesToTaskTransform]", 159 "duration: " + duration, Console.AnsiPurple); 160 } 161 162 // Update the bar view 163 mBarView.updateViewPropertiesToTaskTransform(animateFromTransform, toTransform, duration); 164 165 // Update this task view 166 if (duration > 0) { 167 if (animateFromTransform != null) { 168 setTranslationY(animateFromTransform.translationY); 169 if (Constants.DebugFlags.App.EnableShadows) { 170 setTranslationZ(animateFromTransform.translationZ); 171 } 172 setScaleX(animateFromTransform.scale); 173 setScaleY(animateFromTransform.scale); 174 setAlpha(animateFromTransform.alpha); 175 } 176 if (Constants.DebugFlags.App.EnableShadows) { 177 animate().translationZ(toTransform.translationZ); 178 } 179 animate().translationY(toTransform.translationY) 180 .scaleX(toTransform.scale) 181 .scaleY(toTransform.scale) 182 .alpha(toTransform.alpha) 183 .setStartDelay(0) 184 .setDuration(duration) 185 .setInterpolator(mConfig.fastOutSlowInInterpolator) 186 .setUpdateListener(mUpdateDimListener) 187 .start(); 188 } else { 189 setTranslationY(toTransform.translationY); 190 if (Constants.DebugFlags.App.EnableShadows) { 191 setTranslationZ(toTransform.translationZ); 192 } 193 setScaleX(toTransform.scale); 194 setScaleY(toTransform.scale); 195 setAlpha(toTransform.alpha); 196 } 197 updateDimOverlayFromScale(); 198 invalidate(); 199 } 200 201 /** Resets this view's properties */ 202 void resetViewProperties() { 203 setTranslationX(0f); 204 setTranslationY(0f); 205 if (Constants.DebugFlags.App.EnableShadows) { 206 setTranslationZ(0f); 207 } 208 setScaleX(1f); 209 setScaleY(1f); 210 setAlpha(1f); 211 setDim(0); 212 invalidate(); 213 } 214 215 /** 216 * When we are un/filtering, this method will set up the transform that we are animating to, 217 * in order to hide the task. 218 */ 219 void prepareTaskTransformForFilterTaskHidden(TaskViewTransform toTransform) { 220 // Fade the view out and slide it away 221 toTransform.alpha = 0f; 222 toTransform.translationY += 200; 223 } 224 225 /** 226 * When we are un/filtering, this method will setup the transform that we are animating from, 227 * in order to show the task. 228 */ 229 void prepareTaskTransformForFilterTaskVisible(TaskViewTransform fromTransform) { 230 // Fade the view in 231 fromTransform.alpha = 0f; 232 } 233 234 /** Prepares this task view for the enter-recents animations. This is called earlier in the 235 * first layout because the actual animation into recents may take a long time. */ 236 public void prepareAnimateEnterRecents(boolean isTaskViewFrontMost, int offsetY, int offscreenY, 237 Rect taskRect) { 238 if (mConfig.launchedFromAppWithScreenshot) { 239 if (isTaskViewFrontMost) { 240 // Hide the task view as we are going to animate the full screenshot into view 241 // and then replace it with this view once we are done 242 setVisibility(View.INVISIBLE); 243 // Also hide the front most task bar view so we can animate it in 244 mBarView.prepareAnimateEnterRecents(); 245 } else { 246 // Top align the task views 247 setTranslationY(offsetY); 248 setScaleX(1f); 249 setScaleY(1f); 250 } 251 252 } else if (mConfig.launchedFromAppWithThumbnail) { 253 if (isTaskViewFrontMost) { 254 // Hide the front most task bar view so we can animate it in 255 mBarView.prepareAnimateEnterRecents(); 256 // Set the dim to 0 so we can animate it in 257 setDim(0); 258 } 259 260 } else if (mConfig.launchedFromHome) { 261 // Move the task view off screen (below) so we can animate it in 262 setTranslationY(offscreenY); 263 setScaleX(1f); 264 setScaleY(1f); 265 } 266 } 267 268 /** Animates this task view as it enters recents */ 269 public void animateOnEnterRecents(ViewAnimation.TaskViewEnterContext ctx) { 270 TaskViewTransform transform = ctx.transform; 271 272 if (mConfig.launchedFromAppWithScreenshot) { 273 if (ctx.isFrontMost) { 274 // Animate the full screenshot down first, before swapping with this task view 275 ctx.fullScreenshot.animateOnEnterRecents(ctx, new Runnable() { 276 @Override 277 public void run() { 278 // Animate the task bar of the first task view 279 mBarView.animateOnEnterRecents(0); 280 setVisibility(View.VISIBLE); 281 } 282 }); 283 } else { 284 // Animate the tasks down behind the full screenshot 285 animate() 286 .scaleX(transform.scale) 287 .scaleY(transform.scale) 288 .translationY(transform.translationY) 289 .setStartDelay(0) 290 .setInterpolator(mConfig.linearOutSlowInInterpolator) 291 .setDuration(475) 292 .withLayer() 293 .start(); 294 } 295 296 } else if (mConfig.launchedFromAppWithThumbnail) { 297 if (ctx.isFrontMost) { 298 // Animate the task bar of the first task view 299 mBarView.animateOnEnterRecents(mConfig.taskBarEnterAnimDelay); 300 // Animate the dim into view as well 301 ObjectAnimator anim = ObjectAnimator.ofInt(this, "dim", getDimOverlayFromScale()); 302 anim.setStartDelay(mConfig.taskBarEnterAnimDelay); 303 anim.setDuration(mConfig.taskBarEnterAnimDuration); 304 anim.setInterpolator(mConfig.fastOutLinearInInterpolator); 305 anim.start(); 306 } 307 308 } else if (mConfig.launchedFromHome) { 309 // Animate the tasks up 310 int frontIndex = (ctx.stackViewCount - ctx.stackViewIndex - 1); 311 int delay = mConfig.taskBarEnterAnimDelay + 312 frontIndex * mConfig.taskViewEnterFromHomeDelay; 313 animate() 314 .scaleX(transform.scale) 315 .scaleY(transform.scale) 316 .translationY(transform.translationY) 317 .setStartDelay(delay) 318 .setInterpolator(mConfig.quintOutInterpolator) 319 .setDuration(mConfig.taskViewEnterFromHomeDuration) 320 .withLayer() 321 .start(); 322 } 323 } 324 325 /** Animates this task view as it leaves recents */ 326 public void animateOnExitRecents(ViewAnimation.TaskViewExitContext ctx) { 327 animate() 328 .translationY(ctx.offscreenTranslationY) 329 .setStartDelay(0) 330 .setInterpolator(mConfig.fastOutSlowInInterpolator) 331 .setDuration(mConfig.taskViewEnterFromHomeDuration) 332 .withLayer() 333 .withEndAction(ctx.postAnimationTrigger.decrementAsRunnable()) 334 .start(); 335 ctx.postAnimationTrigger.increment(); 336 } 337 338 /** Animates this task view if the user does not interact with the stack after a certain time. */ 339 public void animateOnNoUserInteraction() { 340 mBarView.animateOnNoUserInteraction(); 341 } 342 343 /** Mark this task view that the user does has not interacted with the stack after a certain time. */ 344 public void setOnNoUserInteraction() { 345 mBarView.setOnNoUserInteraction(); 346 } 347 348 /** Animates this task view as it exits recents */ 349 public void animateOnLaunchingTask(final Runnable r) { 350 mBarView.animateOnLaunchingTask(r); 351 352 // Animate the dim 353 if (mDim > 0) { 354 ObjectAnimator anim = ObjectAnimator.ofInt(this, "dim", 0); 355 anim.setDuration(mConfig.taskBarExitAnimDuration); 356 anim.setInterpolator(mConfig.fastOutLinearInInterpolator); 357 anim.start(); 358 } 359 } 360 361 /** Animates the deletion of this task view */ 362 public void animateRemoval(final Runnable r) { 363 // Disabling clipping with the stack while the view is animating away 364 setClipViewInStack(false); 365 366 animate().translationX(mConfig.taskViewRemoveAnimTranslationXPx) 367 .alpha(0f) 368 .setStartDelay(0) 369 .setInterpolator(mConfig.fastOutSlowInInterpolator) 370 .setDuration(mConfig.taskViewRemoveAnimDuration) 371 .withLayer() 372 .withEndAction(new Runnable() { 373 @Override 374 public void run() { 375 // We just throw this into a runnable because starting a view property 376 // animation using layers can cause inconsisten results if we try and 377 // update the layers while the animation is running. In some cases, 378 // the runnabled passed in may start an animation which also uses layers 379 // so we defer all this by posting this. 380 r.run(); 381 382 // Re-enable clipping with the stack (we will reuse this view) 383 setClipViewInStack(true); 384 } 385 }) 386 .start(); 387 } 388 389 /** Returns the rect we want to clip (it may not be the full rect) */ 390 Rect getClippingRect(Rect outRect) { 391 getHitRect(outRect); 392 // XXX: We should get the hit rect of the thumbnail view and intersect, but this is faster 393 outRect.right = outRect.left + mThumbnailView.getRight(); 394 outRect.bottom = outRect.top + mThumbnailView.getBottom(); 395 return outRect; 396 } 397 398 /** Enable the hw layers on this task view */ 399 void enableHwLayers() { 400 mThumbnailView.setLayerType(View.LAYER_TYPE_HARDWARE, null); 401 mBarView.enableHwLayers(); 402 } 403 404 /** Disable the hw layers on this task view */ 405 void disableHwLayers() { 406 mThumbnailView.setLayerType(View.LAYER_TYPE_NONE, null); 407 mBarView.disableHwLayers(); 408 } 409 410 /** 411 * Returns whether this view should be clipped, or any views below should clip against this 412 * view. 413 */ 414 boolean shouldClipViewInStack() { 415 return mClipViewInStack && (getVisibility() == View.VISIBLE); 416 } 417 418 /** Sets whether this view should be clipped, or clipped against. */ 419 void setClipViewInStack(boolean clip) { 420 if (clip != mClipViewInStack) { 421 mClipViewInStack = clip; 422 if (getParent() instanceof View) { 423 getHitRect(mTmpRect); 424 ((View) getParent()).invalidate(mTmpRect); 425 } 426 } 427 } 428 429 /** Returns the current dim. */ 430 public void setDim(int dim) { 431 mDim = dim; 432 postInvalidateOnAnimation(); 433 } 434 435 /** Returns the current dim. */ 436 public int getDim() { 437 return mDim; 438 } 439 440 /** Compute the dim as a function of the scale of this view. */ 441 int getDimOverlayFromScale() { 442 float minScale = Constants.Values.TaskStackView.StackPeekMinScale; 443 float scaleRange = 1f - minScale; 444 float dim = (1f - getScaleX()) / scaleRange; 445 dim = mDimInterpolator.getInterpolation(Math.min(dim, 1f)); 446 return Math.max(0, Math.min(mMaxDim, (int) (dim * 255))); 447 } 448 449 /** Update the dim as a function of the scale of this view. */ 450 void updateDimOverlayFromScale() { 451 setDim(getDimOverlayFromScale()); 452 } 453 454 @Override 455 public void draw(Canvas canvas) { 456 // Apply the rounded rect clip path on the whole view 457 canvas.clipPath(mRoundedRectClipPath); 458 459 super.draw(canvas); 460 461 // Apply the dim if necessary 462 if (mDim > 0) { 463 canvas.drawColor(mDim << 24); 464 } 465 } 466 467 /** 468 * Sets the focused task explicitly. We need a separate flag because requestFocus() won't happen 469 * if the view is not currently visible, or we are in touch state (where we still want to keep 470 * track of focus). 471 */ 472 public void setFocusedTask() { 473 mIsFocused = true; 474 requestFocus(); 475 invalidate(); 476 mCb.onTaskFocused(this); 477 } 478 479 /** 480 * Updates the explicitly focused state when the view focus changes. 481 */ 482 @Override 483 protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) { 484 super.onFocusChanged(gainFocus, direction, previouslyFocusedRect); 485 if (!gainFocus) { 486 mIsFocused = false; 487 invalidate(); 488 } 489 } 490 491 /** 492 * Returns whether we have explicitly been focused. 493 */ 494 public boolean isFocusedTask() { 495 return mIsFocused || isFocused(); 496 } 497 498 /**** TaskCallbacks Implementation ****/ 499 500 /** Binds this task view to the task */ 501 public void onTaskBound(Task t) { 502 mTask = t; 503 mTask.setCallbacks(this); 504 } 505 506 @Override 507 public void onTaskDataLoaded(boolean reloadingTaskData) { 508 if (mThumbnailView != null && mBarView != null) { 509 // Bind each of the views to the new task data 510 mThumbnailView.rebindToTask(mTask, reloadingTaskData); 511 mBarView.rebindToTask(mTask, reloadingTaskData); 512 // Rebind any listeners 513 mBarView.mApplicationIcon.setOnClickListener(this); 514 mBarView.mDismissButton.setOnClickListener(this); 515 if (Constants.DebugFlags.App.EnableDevAppInfoOnLongPress) { 516 if (mConfig.developerOptionsEnabled) { 517 mBarView.mApplicationIcon.setOnLongClickListener(this); 518 } 519 } 520 } 521 mTaskDataLoaded = true; 522 } 523 524 @Override 525 public void onTaskDataUnloaded() { 526 if (mThumbnailView != null && mBarView != null) { 527 // Unbind each of the views from the task data and remove the task callback 528 mTask.setCallbacks(null); 529 mThumbnailView.unbindFromTask(); 530 mBarView.unbindFromTask(); 531 // Unbind any listeners 532 mBarView.mApplicationIcon.setOnClickListener(null); 533 mBarView.mDismissButton.setOnClickListener(null); 534 if (Constants.DebugFlags.App.EnableDevAppInfoOnLongPress) { 535 mBarView.mApplicationIcon.setOnLongClickListener(null); 536 } 537 } 538 mTaskDataLoaded = false; 539 } 540 541 @Override 542 public void onClick(View v) { 543 if (v == mBarView.mApplicationIcon) { 544 mCb.onTaskIconClicked(this); 545 } else if (v == mBarView.mDismissButton) { 546 // Animate out the view and call the callback 547 final TaskView tv = this; 548 animateRemoval(new Runnable() { 549 @Override 550 public void run() { 551 mCb.onTaskDismissed(tv); 552 } 553 }); 554 } 555 } 556 557 @Override 558 public boolean onLongClick(View v) { 559 if (v == mBarView.mApplicationIcon) { 560 mCb.onTaskAppInfoClicked(this); 561 return true; 562 } 563 return false; 564 } 565} 566