TaskView.java revision 47a3e65acc35cd3061bf3867e8b20753870fd892
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.TimeInterpolator; 20import android.animation.ValueAnimator; 21import android.content.Context; 22import android.graphics.Canvas; 23import android.graphics.Outline; 24import android.graphics.Paint; 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.animation.AccelerateInterpolator; 33import android.widget.FrameLayout; 34import com.android.systemui.R; 35import com.android.systemui.recents.Constants; 36import com.android.systemui.recents.RecentsConfiguration; 37import com.android.systemui.recents.model.Task; 38 39 40/* A task view */ 41public class TaskView extends FrameLayout implements Task.TaskCallbacks, View.OnClickListener, 42 View.OnLongClickListener { 43 /** The TaskView callbacks */ 44 interface TaskViewCallbacks { 45 public void onTaskIconClicked(TaskView tv); 46 public void onTaskAppInfoClicked(TaskView tv); 47 public void onTaskFocused(TaskView tv); 48 public void onTaskDismissed(TaskView tv); 49 50 // public void onTaskViewReboundToTask(TaskView tv, Task t); 51 } 52 53 int mDim; 54 int mMaxDim; 55 TimeInterpolator mDimInterpolator = new AccelerateInterpolator(); 56 57 Task mTask; 58 boolean mTaskDataLoaded; 59 boolean mIsFocused; 60 boolean mClipViewInStack; 61 Point mLastTouchDown = new Point(); 62 Path mRoundedRectClipPath = new Path(); 63 64 TaskThumbnailView mThumbnailView; 65 TaskBarView mBarView; 66 TaskViewCallbacks mCb; 67 68 69 public TaskView(Context context) { 70 this(context, null); 71 } 72 73 public TaskView(Context context, AttributeSet attrs) { 74 this(context, attrs, 0); 75 } 76 77 public TaskView(Context context, AttributeSet attrs, int defStyleAttr) { 78 this(context, attrs, defStyleAttr, 0); 79 } 80 81 public TaskView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 82 super(context, attrs, defStyleAttr, defStyleRes); 83 setWillNotDraw(false); 84 } 85 86 @Override 87 protected void onFinishInflate() { 88 RecentsConfiguration config = RecentsConfiguration.getInstance(); 89 mMaxDim = config.taskStackMaxDim; 90 91 // By default, all views are clipped to other views in their stack 92 mClipViewInStack = true; 93 94 // Bind the views 95 mThumbnailView = (TaskThumbnailView) findViewById(R.id.task_view_thumbnail); 96 mBarView = (TaskBarView) findViewById(R.id.task_view_bar); 97 98 if (mTaskDataLoaded) { 99 onTaskDataLoaded(false); 100 } 101 } 102 103 @Override 104 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 105 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 106 107 // Update the rounded rect clip path 108 RecentsConfiguration config = RecentsConfiguration.getInstance(); 109 float radius = config.taskViewRoundedCornerRadiusPx; 110 mRoundedRectClipPath.reset(); 111 mRoundedRectClipPath.addRoundRect(new RectF(0, 0, getMeasuredWidth(), getMeasuredHeight()), 112 radius, radius, Path.Direction.CW); 113 114 // Update the outline 115 Outline o = new Outline(); 116 o.setRoundRect(0, 0, getMeasuredWidth(), getMeasuredHeight(), radius); 117 setOutline(o); 118 } 119 120 @Override 121 public boolean onInterceptTouchEvent(MotionEvent ev) { 122 switch (ev.getAction()) { 123 case MotionEvent.ACTION_DOWN: 124 case MotionEvent.ACTION_MOVE: 125 mLastTouchDown.set((int) ev.getX(), (int) ev.getY()); 126 break; 127 } 128 return super.onInterceptTouchEvent(ev); 129 } 130 131 /** Set callback */ 132 void setCallbacks(TaskViewCallbacks cb) { 133 mCb = cb; 134 } 135 136 /** Gets the task */ 137 Task getTask() { 138 return mTask; 139 } 140 141 /** Synchronizes this view's properties with the task's transform */ 142 void updateViewPropertiesToTaskTransform(TaskViewTransform animateFromTransform, 143 TaskViewTransform toTransform, int duration) { 144 RecentsConfiguration config = RecentsConfiguration.getInstance(); 145 int minZ = config.taskViewTranslationZMinPx; 146 int incZ = config.taskViewTranslationZIncrementPx; 147 148 // Update the bar view 149 mBarView.updateViewPropertiesToTaskTransform(animateFromTransform, toTransform, duration); 150 151 // Update this task view 152 if (duration > 0) { 153 if (animateFromTransform != null) { 154 setTranslationY(animateFromTransform.translationY); 155 if (Constants.DebugFlags.App.EnableShadows) { 156 setTranslationZ(Math.max(minZ, minZ + (animateFromTransform.t * incZ))); 157 } 158 setScaleX(animateFromTransform.scale); 159 setScaleY(animateFromTransform.scale); 160 setAlpha(animateFromTransform.alpha); 161 } 162 if (Constants.DebugFlags.App.EnableShadows) { 163 animate().translationZ(Math.max(minZ, minZ + (toTransform.t * incZ))); 164 } 165 animate().translationY(toTransform.translationY) 166 .scaleX(toTransform.scale) 167 .scaleY(toTransform.scale) 168 .alpha(toTransform.alpha) 169 .setDuration(duration) 170 .setInterpolator(config.defaultBezierInterpolator) 171 .withLayer() 172 .setUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 173 @Override 174 public void onAnimationUpdate(ValueAnimator animation) { 175 updateDimOverlayFromScale(); 176 } 177 }) 178 .start(); 179 } else { 180 setTranslationY(toTransform.translationY); 181 if (Constants.DebugFlags.App.EnableShadows) { 182 setTranslationZ(Math.max(minZ, minZ + (toTransform.t * incZ))); 183 } 184 setScaleX(toTransform.scale); 185 setScaleY(toTransform.scale); 186 setAlpha(toTransform.alpha); 187 } 188 updateDimOverlayFromScale(); 189 invalidate(); 190 } 191 192 /** Resets this view's properties */ 193 void resetViewProperties() { 194 setTranslationX(0f); 195 setTranslationY(0f); 196 if (Constants.DebugFlags.App.EnableShadows) { 197 setTranslationZ(0f); 198 } 199 setScaleX(1f); 200 setScaleY(1f); 201 setAlpha(1f); 202 invalidate(); 203 } 204 205 /** 206 * When we are un/filtering, this method will set up the transform that we are animating to, 207 * in order to hide the task. 208 */ 209 void prepareTaskTransformForFilterTaskHidden(TaskViewTransform toTransform) { 210 // Fade the view out and slide it away 211 toTransform.alpha = 0f; 212 toTransform.translationY += 200; 213 } 214 215 /** 216 * When we are un/filtering, this method will setup the transform that we are animating from, 217 * in order to show the task. 218 */ 219 void prepareTaskTransformForFilterTaskVisible(TaskViewTransform fromTransform) { 220 // Fade the view in 221 fromTransform.alpha = 0f; 222 } 223 224 /** Animates this task view as it enters recents */ 225 public void animateOnEnterRecents() { 226 RecentsConfiguration config = RecentsConfiguration.getInstance(); 227 mBarView.setAlpha(0f); 228 mBarView.animate() 229 .alpha(1f) 230 .setStartDelay(300) 231 .setInterpolator(config.defaultBezierInterpolator) 232 .setDuration(config.taskBarEnterAnimDuration) 233 .withLayer() 234 .start(); 235 } 236 237 /** Animates this task view as it exits recents */ 238 public void animateOnLeavingRecents(final Runnable r) { 239 RecentsConfiguration config = RecentsConfiguration.getInstance(); 240 mBarView.animate() 241 .alpha(0f) 242 .setStartDelay(0) 243 .setInterpolator(config.defaultBezierInterpolator) 244 .setDuration(config.taskBarExitAnimDuration) 245 .withLayer() 246 .withEndAction(new Runnable() { 247 @Override 248 public void run() { 249 post(r); 250 } 251 }) 252 .start(); 253 } 254 255 /** Animates the deletion of this task view */ 256 public void animateRemoval(final Runnable r) { 257 // Disabling clipping with the stack while the view is animating away 258 setClipViewInStack(false); 259 260 RecentsConfiguration config = RecentsConfiguration.getInstance(); 261 animate().translationX(config.taskViewRemoveAnimTranslationXPx) 262 .alpha(0f) 263 .setStartDelay(0) 264 .setInterpolator(config.defaultBezierInterpolator) 265 .setDuration(config.taskViewRemoveAnimDuration) 266 .withLayer() 267 .withEndAction(new Runnable() { 268 @Override 269 public void run() { 270 post(r); 271 272 // Re-enable clipping with the stack (we will reuse this view) 273 setClipViewInStack(false); 274 } 275 }) 276 .start(); 277 } 278 279 /** Returns the rect we want to clip (it may not be the full rect) */ 280 Rect getClippingRect(Rect outRect) { 281 getHitRect(outRect); 282 // XXX: We should get the hit rect of the thumbnail view and intersect, but this is faster 283 outRect.right = outRect.left + mThumbnailView.getRight(); 284 outRect.bottom = outRect.top + mThumbnailView.getBottom(); 285 return outRect; 286 } 287 288 /** Enable the hw layers on this task view */ 289 void enableHwLayers() { 290 mThumbnailView.setLayerType(View.LAYER_TYPE_HARDWARE, null); 291 } 292 293 /** Disable the hw layers on this task view */ 294 void disableHwLayers() { 295 mThumbnailView.setLayerType(View.LAYER_TYPE_NONE, null); 296 } 297 298 /** 299 * Returns whether this view should be clipped, or any views below should clip against this 300 * view. 301 */ 302 boolean shouldClipViewInStack() { 303 return mClipViewInStack; 304 } 305 306 /** Sets whether this view should be clipped, or clipped against. */ 307 void setClipViewInStack(boolean clip) { 308 if (clip != mClipViewInStack) { 309 mClipViewInStack = clip; 310 if (getParent() instanceof View) { 311 Rect r = new Rect(); 312 getHitRect(r); 313 ((View) getParent()).invalidate(r); 314 } 315 } 316 } 317 318 /** Update the dim as a function of the scale of this view. */ 319 void updateDimOverlayFromScale() { 320 float minScale = Constants.Values.TaskStackView.StackPeekMinScale; 321 float scaleRange = 1f - minScale; 322 float dim = (1f - getScaleX()) / scaleRange; 323 dim = mDimInterpolator.getInterpolation(Math.min(dim, 1f)); 324 mDim = Math.max(0, Math.min(mMaxDim, (int) (dim * 255))); 325 } 326 327 @Override 328 public void draw(Canvas canvas) { 329 // Apply the rounded rect clip path on the whole view 330 canvas.clipPath(mRoundedRectClipPath); 331 332 super.draw(canvas); 333 334 // Apply the dim if necessary 335 if (mDim > 0) { 336 canvas.drawColor(mDim << 24); 337 } 338 } 339 340 /** 341 * Sets the focused task explicitly. We need a separate flag because requestFocus() won't happen 342 * if the view is not currently visible, or we are in touch state (where we still want to keep 343 * track of focus). 344 */ 345 public void setFocusedTask() { 346 mIsFocused = true; 347 requestFocus(); 348 invalidate(); 349 mCb.onTaskFocused(this); 350 } 351 352 /** 353 * Updates the explicitly focused state when the view focus changes. 354 */ 355 @Override 356 protected void onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect) { 357 super.onFocusChanged(gainFocus, direction, previouslyFocusedRect); 358 if (!gainFocus) { 359 mIsFocused = false; 360 invalidate(); 361 } 362 } 363 364 /** 365 * Returns whether we have explicitly been focused. 366 */ 367 public boolean isFocusedTask() { 368 return mIsFocused || isFocused(); 369 } 370 371 /**** TaskCallbacks Implementation ****/ 372 373 /** Binds this task view to the task */ 374 public void onTaskBound(Task t) { 375 mTask = t; 376 mTask.setCallbacks(this); 377 } 378 379 @Override 380 public void onTaskDataLoaded(boolean reloadingTaskData) { 381 if (mThumbnailView != null && mBarView != null) { 382 // Bind each of the views to the new task data 383 mThumbnailView.rebindToTask(mTask, reloadingTaskData); 384 mBarView.rebindToTask(mTask, reloadingTaskData); 385 // Rebind any listeners 386 mBarView.mApplicationIcon.setOnClickListener(this); 387 mBarView.mDismissButton.setOnClickListener(this); 388 if (Constants.DebugFlags.App.EnableDevAppInfoOnLongPress) { 389 RecentsConfiguration config = RecentsConfiguration.getInstance(); 390 if (config.developerOptionsEnabled) { 391 mBarView.mApplicationIcon.setOnLongClickListener(this); 392 } 393 } 394 } 395 mTaskDataLoaded = true; 396 } 397 398 @Override 399 public void onTaskDataUnloaded() { 400 if (mThumbnailView != null && mBarView != null) { 401 // Unbind each of the views from the task data and remove the task callback 402 mTask.setCallbacks(null); 403 mThumbnailView.unbindFromTask(); 404 mBarView.unbindFromTask(); 405 // Unbind any listeners 406 mBarView.mApplicationIcon.setOnClickListener(null); 407 mBarView.mDismissButton.setOnClickListener(null); 408 if (Constants.DebugFlags.App.EnableDevAppInfoOnLongPress) { 409 mBarView.mApplicationIcon.setOnLongClickListener(null); 410 } 411 } 412 mTaskDataLoaded = false; 413 } 414 415 @Override 416 public void onClick(View v) { 417 if (v == mBarView.mApplicationIcon) { 418 mCb.onTaskIconClicked(this); 419 } else if (v == mBarView.mDismissButton) { 420 // Animate out the view and call the callback 421 final TaskView tv = this; 422 animateRemoval(new Runnable() { 423 @Override 424 public void run() { 425 mCb.onTaskDismissed(tv); 426 } 427 }); 428 } 429 } 430 431 @Override 432 public boolean onLongClick(View v) { 433 if (v == mBarView.mApplicationIcon) { 434 mCb.onTaskAppInfoClicked(this); 435 return true; 436 } 437 return false; 438 } 439} 440