AppsCustomizePagedView.java revision de1af7661548692d370518528ff91c7422b9c8ae
1/* 2 * Copyright (C) 2011 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.launcher2; 18 19import android.animation.AnimatorSet; 20import android.animation.ObjectAnimator; 21import android.animation.ValueAnimator; 22import android.appwidget.AppWidgetManager; 23import android.appwidget.AppWidgetProviderInfo; 24import android.content.ComponentName; 25import android.content.Context; 26import android.content.Intent; 27import android.content.pm.ActivityInfo; 28import android.content.pm.PackageManager; 29import android.content.pm.ResolveInfo; 30import android.content.res.Configuration; 31import android.content.res.Resources; 32import android.content.res.TypedArray; 33import android.graphics.Bitmap; 34import android.graphics.Bitmap.Config; 35import android.graphics.Canvas; 36import android.graphics.Rect; 37import android.graphics.drawable.Drawable; 38import android.os.AsyncTask; 39import android.os.Process; 40import android.util.AttributeSet; 41import android.util.Log; 42import android.view.LayoutInflater; 43import android.view.MotionEvent; 44import android.view.View; 45import android.view.ViewGroup; 46import android.view.animation.AccelerateInterpolator; 47import android.widget.GridLayout; 48import android.widget.ImageView; 49import android.widget.Toast; 50 51import com.android.launcher.R; 52import com.android.launcher2.DropTarget.DragObject; 53 54import java.util.ArrayList; 55import java.util.Collections; 56import java.util.Iterator; 57import java.util.List; 58 59/** 60 * A simple callback interface which also provides the results of the task. 61 */ 62interface AsyncTaskCallback { 63 void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data); 64} 65 66/** 67 * The data needed to perform either of the custom AsyncTasks. 68 */ 69class AsyncTaskPageData { 70 enum Type { 71 LoadWidgetPreviewData, 72 LoadHolographicIconsData 73 } 74 75 AsyncTaskPageData(int p, ArrayList<Object> l, ArrayList<Bitmap> si, AsyncTaskCallback bgR, 76 AsyncTaskCallback postR) { 77 page = p; 78 items = l; 79 sourceImages = si; 80 generatedImages = new ArrayList<Bitmap>(); 81 cellWidth = cellHeight = -1; 82 doInBackgroundCallback = bgR; 83 postExecuteCallback = postR; 84 } 85 AsyncTaskPageData(int p, ArrayList<Object> l, int cw, int ch, int ccx, AsyncTaskCallback bgR, 86 AsyncTaskCallback postR) { 87 page = p; 88 items = l; 89 generatedImages = new ArrayList<Bitmap>(); 90 cellWidth = cw; 91 cellHeight = ch; 92 cellCountX = ccx; 93 doInBackgroundCallback = bgR; 94 postExecuteCallback = postR; 95 } 96 int page; 97 ArrayList<Object> items; 98 ArrayList<Bitmap> sourceImages; 99 ArrayList<Bitmap> generatedImages; 100 int cellWidth; 101 int cellHeight; 102 int cellCountX; 103 AsyncTaskCallback doInBackgroundCallback; 104 AsyncTaskCallback postExecuteCallback; 105} 106 107/** 108 * A generic template for an async task used in AppsCustomize. 109 */ 110class AppsCustomizeAsyncTask extends AsyncTask<AsyncTaskPageData, Void, AsyncTaskPageData> { 111 AppsCustomizeAsyncTask(int p, AppsCustomizePagedView.ContentType t, AsyncTaskPageData.Type ty) { 112 page = p; 113 pageContentType = t; 114 threadPriority = Process.THREAD_PRIORITY_DEFAULT; 115 dataType = ty; 116 } 117 @Override 118 protected AsyncTaskPageData doInBackground(AsyncTaskPageData... params) { 119 if (params.length != 1) return null; 120 // Load each of the widget previews in the background 121 params[0].doInBackgroundCallback.run(this, params[0]); 122 return params[0]; 123 } 124 @Override 125 protected void onPostExecute(AsyncTaskPageData result) { 126 // All the widget previews are loaded, so we can just callback to inflate the page 127 result.postExecuteCallback.run(this, result); 128 } 129 130 void setThreadPriority(int p) { 131 threadPriority = p; 132 } 133 void syncThreadPriority() { 134 Process.setThreadPriority(threadPriority); 135 } 136 137 // The page that this async task is associated with 138 AsyncTaskPageData.Type dataType; 139 int page; 140 AppsCustomizePagedView.ContentType pageContentType; 141 int threadPriority; 142} 143 144/** 145 * The Apps/Customize page that displays all the applications, widgets, and shortcuts. 146 */ 147public class AppsCustomizePagedView extends PagedViewWithDraggableItems implements 148 AllAppsView, View.OnClickListener, DragSource { 149 static final String LOG_TAG = "AppsCustomizePagedView"; 150 151 /** 152 * The different content types that this paged view can show. 153 */ 154 public enum ContentType { 155 Applications, 156 Widgets 157 } 158 159 // Refs 160 private Launcher mLauncher; 161 private DragController mDragController; 162 private final LayoutInflater mLayoutInflater; 163 private final PackageManager mPackageManager; 164 165 // Content 166 private ContentType mContentType; 167 private ArrayList<ApplicationInfo> mApps; 168 private ArrayList<Object> mWidgets; 169 private ArrayList<Object> mShortcuts; 170 171 // Caching 172 private Canvas mCanvas; 173 private Drawable mDefaultWidgetBackground; 174 private IconCache mIconCache; 175 176 // Dimens 177 private int mContentWidth; 178 private int mAppIconSize; 179 private int mMaxWidgetSpan, mMinWidgetSpan; 180 private int mWidgetCountX, mWidgetCountY; 181 private int mWidgetWidthGap, mWidgetHeightGap; 182 private int mShortcutCountX, mShortcutCountY; 183 private int mShortcutWidthGap, mShortcutHeightGap; 184 private final int mWidgetPreviewIconPaddedDimension; 185 private final float sWidgetPreviewIconPaddingPercentage = 0.25f; 186 private PagedViewCellLayout mWidgetSpacingLayout; 187 188 // Previews & outlines 189 ArrayList<AppsCustomizeAsyncTask> mRunningTasks; 190 private HolographicOutlineHelper mHolographicOutlineHelper; 191 192 public AppsCustomizePagedView(Context context, AttributeSet attrs) { 193 super(context, attrs); 194 mLayoutInflater = LayoutInflater.from(context); 195 mPackageManager = context.getPackageManager(); 196 mContentType = ContentType.Applications; 197 mApps = new ArrayList<ApplicationInfo>(); 198 mWidgets = new ArrayList<Object>(); 199 mShortcuts = new ArrayList<Object>(); 200 mIconCache = ((LauncherApplication) context.getApplicationContext()).getIconCache(); 201 mHolographicOutlineHelper = new HolographicOutlineHelper(); 202 mCanvas = new Canvas(); 203 mRunningTasks = new ArrayList<AppsCustomizeAsyncTask>(); 204 205 // Save the default widget preview background 206 Resources resources = context.getResources(); 207 mDefaultWidgetBackground = resources.getDrawable(R.drawable.default_widget_preview_holo); 208 mAppIconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 209 210 TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PagedView, 0, 0); 211 // TODO-APPS_CUSTOMIZE: remove these unnecessary attrs after 212 mCellCountX = a.getInt(R.styleable.PagedView_cellCountX, 6); 213 mCellCountY = a.getInt(R.styleable.PagedView_cellCountY, 4); 214 a.recycle(); 215 a = context.obtainStyledAttributes(attrs, R.styleable.AppsCustomizePagedView, 0, 0); 216 mWidgetWidthGap = 217 a.getDimensionPixelSize(R.styleable.AppsCustomizePagedView_widgetCellWidthGap, 0); 218 mWidgetHeightGap = 219 a.getDimensionPixelSize(R.styleable.AppsCustomizePagedView_widgetCellHeightGap, 0); 220 mWidgetCountX = a.getInt(R.styleable.AppsCustomizePagedView_widgetCountX, 2); 221 mWidgetCountY = a.getInt(R.styleable.AppsCustomizePagedView_widgetCountY, 2); 222 a.recycle(); 223 mWidgetSpacingLayout = new PagedViewCellLayout(getContext()); 224 225 // The max widget span is the length N, such that NxN is the largest bounds that the widget 226 // preview can be before applying the widget scaling 227 mMinWidgetSpan = 1; 228 mMaxWidgetSpan = 3; 229 230 // The padding on the non-matched dimension for the default widget preview icons 231 // (top + bottom) 232 mWidgetPreviewIconPaddedDimension = 233 (int) (mAppIconSize * (1 + (2 * sWidgetPreviewIconPaddingPercentage))); 234 } 235 236 @Override 237 protected void init() { 238 super.init(); 239 mCenterPagesVertically = false; 240 241 Context context = getContext(); 242 Resources r = context.getResources(); 243 setDragSlopeThreshold(r.getInteger(R.integer.config_appsCustomizeDragSlopeThreshold)/100f); 244 } 245 246 @Override 247 protected void onWallpaperTap(MotionEvent ev) { 248 int action = ev.getAction(); 249 if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_DOWN) { 250 // Dismiss AppsCustomize if we tap 251 mLauncher.showWorkspace(true); 252 } 253 } 254 255 /** 256 * This differs from isDataReady as this is the test done if isDataReady is not set. 257 */ 258 private boolean testDataReady() { 259 // We only do this test once, and we default to the Applications page, so we only really 260 // have to wait for there to be apps. 261 return !mApps.isEmpty(); 262 } 263 264 protected void onDataReady(int width, int height) { 265 // Note that we transpose the counts in portrait so that we get a similar layout 266 boolean isLandscape = getResources().getConfiguration().orientation == 267 Configuration.ORIENTATION_LANDSCAPE; 268 int maxCellCountX = Integer.MAX_VALUE; 269 int maxCellCountY = Integer.MAX_VALUE; 270 if (LauncherApplication.isScreenLarge()) { 271 maxCellCountX = (isLandscape ? LauncherModel.getCellCountX() : 272 LauncherModel.getCellCountY()); 273 maxCellCountY = (isLandscape ? LauncherModel.getCellCountY() : 274 LauncherModel.getCellCountX()); 275 } 276 277 // Now that the data is ready, we can calculate the content width, the number of cells to 278 // use for each page 279 mWidgetSpacingLayout.setGap(mPageLayoutWidthGap, mPageLayoutHeightGap); 280 mWidgetSpacingLayout.setPadding(mPageLayoutPaddingLeft, mPageLayoutPaddingTop, 281 mPageLayoutPaddingRight, mPageLayoutPaddingBottom); 282 mWidgetSpacingLayout.calculateCellCount(width, height, maxCellCountX, maxCellCountY); 283 mCellCountX = mWidgetSpacingLayout.getCellCountX(); 284 mCellCountY = mWidgetSpacingLayout.getCellCountY(); 285 mWidgetCountX = Math.max(1, (int) Math.round(mCellCountX / 2f)); 286 mWidgetCountY = Math.max(1, (int) Math.round(mCellCountY / 3f)); 287 mShortcutCountX = Math.max(1, (int) Math.round(mCellCountX / 2f)); 288 mShortcutCountY = Math.max(1, (int) Math.round(mCellCountY / 2f)); 289 290 // Force a measure to update recalculate the gaps 291 int widthSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST); 292 int heightSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.AT_MOST); 293 mWidgetSpacingLayout.measure(widthSpec, heightSpec); 294 mContentWidth = mWidgetSpacingLayout.getContentWidth(); 295 296 invalidatePageData(); 297 } 298 299 @Override 300 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 301 int width = MeasureSpec.getSize(widthMeasureSpec); 302 int height = MeasureSpec.getSize(heightMeasureSpec); 303 if (!isDataReady()) { 304 if (testDataReady()) { 305 setDataIsReady(); 306 setMeasuredDimension(width, height); 307 onDataReady(width, height); 308 } 309 } 310 311 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 312 } 313 314 /** Removes and returns the ResolveInfo with the specified ComponentName */ 315 private ResolveInfo removeResolveInfoWithComponentName(List<ResolveInfo> list, 316 ComponentName cn) { 317 Iterator<ResolveInfo> iter = list.iterator(); 318 while (iter.hasNext()) { 319 ResolveInfo rinfo = iter.next(); 320 ActivityInfo info = rinfo.activityInfo; 321 ComponentName c = new ComponentName(info.packageName, info.name); 322 if (c.equals(cn)) { 323 iter.remove(); 324 return rinfo; 325 } 326 } 327 return null; 328 } 329 330 public void onPackagesUpdated() { 331 // Get the list of widgets and shortcuts 332 boolean wasEmpty = mWidgets.isEmpty() && mShortcuts.isEmpty(); 333 mWidgets.clear(); 334 mShortcuts.clear(); 335 List<AppWidgetProviderInfo> widgets = 336 AppWidgetManager.getInstance(mLauncher).getInstalledProviders(); 337 Collections.sort(widgets, 338 new LauncherModel.WidgetAndShortcutNameComparator(mPackageManager)); 339 Intent shortcutsIntent = new Intent(Intent.ACTION_CREATE_SHORTCUT); 340 List<ResolveInfo> shortcuts = mPackageManager.queryIntentActivities(shortcutsIntent, 0); 341 Collections.sort(shortcuts, 342 new LauncherModel.WidgetAndShortcutNameComparator(mPackageManager)); 343 mWidgets.addAll(widgets); 344 mShortcuts.addAll(shortcuts); 345 346 if (wasEmpty) { 347 // The next layout pass will trigger data-ready if both widgets and apps are set, so request 348 // a layout to do this test and invalidate the page data when ready. 349 if (testDataReady()) requestLayout(); 350 } else { 351 invalidatePageData(); 352 } 353 } 354 355 @Override 356 public void onClick(View v) { 357 // When we have exited all apps or are in transition, disregard clicks 358 if (!mLauncher.isAllAppsCustomizeOpen() || 359 mLauncher.getWorkspace().isSwitchingState()) return; 360 361 if (v instanceof PagedViewIcon) { 362 // Animate some feedback to the click 363 final ApplicationInfo appInfo = (ApplicationInfo) v.getTag(); 364 animateClickFeedback(v, new Runnable() { 365 @Override 366 public void run() { 367 mLauncher.startActivitySafely(appInfo.intent, appInfo); 368 } 369 }); 370 } else if (v instanceof PagedViewWidget) { 371 // Let the user know that they have to long press to add a widget 372 Toast.makeText(getContext(), R.string.long_press_widget_to_add, 373 Toast.LENGTH_SHORT).show(); 374 375 // Create a little animation to show that the widget can move 376 float offsetY = getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 377 final ImageView p = (ImageView) v.findViewById(R.id.widget_preview); 378 AnimatorSet bounce = new AnimatorSet(); 379 ValueAnimator tyuAnim = ObjectAnimator.ofFloat(p, "translationY", offsetY); 380 tyuAnim.setDuration(125); 381 ValueAnimator tydAnim = ObjectAnimator.ofFloat(p, "translationY", 0f); 382 tydAnim.setDuration(100); 383 bounce.play(tyuAnim).before(tydAnim); 384 bounce.setInterpolator(new AccelerateInterpolator()); 385 bounce.start(); 386 } 387 } 388 389 /* 390 * PagedViewWithDraggableItems implementation 391 */ 392 @Override 393 protected void determineDraggingStart(android.view.MotionEvent ev) { 394 // Disable dragging by pulling an app down for now. 395 } 396 397 private void beginDraggingApplication(View v) { 398 mLauncher.getWorkspace().onDragStartedWithItem(v); 399 mLauncher.getWorkspace().beginDragShared(v, this); 400 } 401 402 private void beginDraggingWidget(View v) { 403 // Get the widget preview as the drag representation 404 ImageView image = (ImageView) v.findViewById(R.id.widget_preview); 405 PendingAddItemInfo createItemInfo = (PendingAddItemInfo) v.getTag(); 406 407 // Compose the drag image 408 Bitmap b; 409 Drawable preview = image.getDrawable(); 410 int w = preview.getIntrinsicWidth(); 411 int h = preview.getIntrinsicHeight(); 412 if (createItemInfo instanceof PendingAddWidgetInfo) { 413 PendingAddWidgetInfo createWidgetInfo = (PendingAddWidgetInfo) createItemInfo; 414 int[] spanXY = CellLayout.rectToCell(getResources(), 415 createWidgetInfo.minWidth, createWidgetInfo.minHeight, null); 416 createItemInfo.spanX = spanXY[0]; 417 createItemInfo.spanY = spanXY[1]; 418 419 b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 420 renderDrawableToBitmap(preview, b, 0, 0, w, h, 1, 1); 421 } else { 422 // Workaround for the fact that we don't keep the original ResolveInfo associated with 423 // the shortcut around. To get the icon, we just render the preview image (which has 424 // the shortcut icon) to a new drag bitmap that clips the non-icon space. 425 b = Bitmap.createBitmap(mWidgetPreviewIconPaddedDimension, 426 mWidgetPreviewIconPaddedDimension, Bitmap.Config.ARGB_8888); 427 mCanvas.setBitmap(b); 428 mCanvas.save(); 429 preview.draw(mCanvas); 430 mCanvas.restore(); 431 createItemInfo.spanX = createItemInfo.spanY = 1; 432 } 433 434 // Start the drag 435 mLauncher.lockScreenOrientation(); 436 mLauncher.getWorkspace().onDragStartedWithItemSpans(createItemInfo.spanX, 437 createItemInfo.spanY, b); 438 mDragController.startDrag(image, b, this, createItemInfo, 439 DragController.DRAG_ACTION_COPY, null); 440 b.recycle(); 441 } 442 @Override 443 protected boolean beginDragging(View v) { 444 if (!super.beginDragging(v)) return false; 445 446 // Go into spring loaded mode (must happen before we startDrag()) 447 int currentPageIndex = mLauncher.getWorkspace().getCurrentPage(); 448 CellLayout currentPage = (CellLayout) mLauncher.getWorkspace().getChildAt(currentPageIndex); 449 mLauncher.enterSpringLoadedDragMode(currentPage); 450 451 if (v instanceof PagedViewIcon) { 452 beginDraggingApplication(v); 453 } else if (v instanceof PagedViewWidget) { 454 beginDraggingWidget(v); 455 } 456 return true; 457 } 458 private void endDragging(View target, boolean success) { 459 mLauncher.getWorkspace().onDragStopped(success); 460 if (!success || (target != mLauncher.getWorkspace() && 461 !(target instanceof DeleteDropTarget))) { 462 // Exit spring loaded mode if we have not successfully dropped or have not handled the 463 // drop in Workspace 464 mLauncher.exitSpringLoadedDragMode(); 465 } 466 mLauncher.unlockScreenOrientation(); 467 468 } 469 470 @Override 471 public void onDropCompleted(View target, DragObject d, boolean success) { 472 endDragging(target, success); 473 474 // Display an error message if the drag failed due to there not being enough space on the 475 // target layout we were dropping on. 476 if (!success) { 477 boolean showOutOfSpaceMessage = false; 478 if (target instanceof Workspace) { 479 int currentScreen = mLauncher.getCurrentWorkspaceScreen(); 480 Workspace workspace = (Workspace) target; 481 CellLayout layout = (CellLayout) workspace.getChildAt(currentScreen); 482 ItemInfo itemInfo = (ItemInfo) d.dragInfo; 483 if (layout != null) { 484 layout.calculateSpans(itemInfo); 485 showOutOfSpaceMessage = 486 !layout.findCellForSpan(null, itemInfo.spanX, itemInfo.spanY); 487 } 488 } 489 // TODO-APPS_CUSTOMIZE: We need to handle this for folders as well later. 490 if (showOutOfSpaceMessage) { 491 mLauncher.showOutOfSpaceMessage(); 492 } 493 } 494 } 495 496 public void setContentType(ContentType type) { 497 mContentType = type; 498 setCurrentPage(0); 499 invalidatePageData(); 500 } 501 502 public boolean isContentType(ContentType type) { 503 return (mContentType == type); 504 } 505 506 /* 507 * Apps PagedView implementation 508 */ 509 private void setVisibilityOnChildren(ViewGroup layout, int visibility) { 510 int childCount = layout.getChildCount(); 511 for (int i = 0; i < childCount; ++i) { 512 layout.getChildAt(i).setVisibility(visibility); 513 } 514 } 515 private void setupPage(PagedViewCellLayout layout) { 516 layout.setCellCount(mCellCountX, mCellCountY); 517 layout.setGap(mPageLayoutWidthGap, mPageLayoutHeightGap); 518 layout.setPadding(mPageLayoutPaddingLeft, mPageLayoutPaddingTop, 519 mPageLayoutPaddingRight, mPageLayoutPaddingBottom); 520 521 // Note: We force a measure here to get around the fact that when we do layout calculations 522 // immediately after syncing, we don't have a proper width. That said, we already know the 523 // expected page width, so we can actually optimize by hiding all the TextView-based 524 // children that are expensive to measure, and let that happen naturally later. 525 setVisibilityOnChildren(layout, View.GONE); 526 int widthSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST); 527 int heightSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.AT_MOST); 528 layout.setMinimumWidth(getPageContentWidth()); 529 layout.measure(widthSpec, heightSpec); 530 setVisibilityOnChildren(layout, View.VISIBLE); 531 } 532 public void syncAppsPages() { 533 // Ensure that we have the right number of pages 534 Context context = getContext(); 535 int numPages = (int) Math.ceil((float) mApps.size() / (mCellCountX * mCellCountY)); 536 for (int i = 0; i < numPages; ++i) { 537 PagedViewCellLayout layout = new PagedViewCellLayout(context); 538 setupPage(layout); 539 addView(layout); 540 } 541 } 542 public void syncAppsPageItems(int page) { 543 // ensure that we have the right number of items on the pages 544 int numPages = getPageCount(); 545 int numCells = mCellCountX * mCellCountY; 546 int startIndex = page * numCells; 547 int endIndex = Math.min(startIndex + numCells, mApps.size()); 548 PagedViewCellLayout layout = (PagedViewCellLayout) getChildAt(page); 549 550 layout.removeAllViewsOnPage(); 551 ArrayList<Object> items = new ArrayList<Object>(); 552 ArrayList<Bitmap> images = new ArrayList<Bitmap>(); 553 for (int i = startIndex; i < endIndex; ++i) { 554 ApplicationInfo info = mApps.get(i); 555 PagedViewIcon icon = (PagedViewIcon) mLayoutInflater.inflate( 556 R.layout.apps_customize_application, layout, false); 557 icon.applyFromApplicationInfo(info, true, mHolographicOutlineHelper); 558 icon.setOnClickListener(this); 559 icon.setOnLongClickListener(this); 560 icon.setOnTouchListener(this); 561 562 int index = i - startIndex; 563 int x = index % mCellCountX; 564 int y = index / mCellCountX; 565 layout.addViewToCellLayout(icon, -1, i, new PagedViewCellLayout.LayoutParams(x,y, 1,1)); 566 567 items.add(info); 568 images.add(info.iconBitmap); 569 } 570 571 // Create the hardware layers 572 layout.allowHardwareLayerCreation(); 573 layout.createHardwareLayers(); 574 575 prepareGenerateHoloOutlinesTask(page, items, images); 576 } 577 578 /** 579 * Return the appropriate thread priority for loading for a given page (we give the current 580 * page much higher priority) 581 */ 582 private int getThreadPriorityForPage(int page) { 583 // TODO-APPS_CUSTOMIZE: detect number of cores and set thread priorities accordingly below 584 int pageDiff = Math.abs(page - mCurrentPage); 585 if (pageDiff <= 0) { 586 // return Process.THREAD_PRIORITY_DEFAULT; 587 return Process.THREAD_PRIORITY_MORE_FAVORABLE; 588 } else if (pageDiff <= 1) { 589 // return Process.THREAD_PRIORITY_BACKGROUND; 590 return Process.THREAD_PRIORITY_DEFAULT; 591 } else { 592 // return Process.THREAD_PRIORITY_LOWEST; 593 return Process.THREAD_PRIORITY_DEFAULT; 594 } 595 } 596 /** 597 * Creates and executes a new AsyncTask to load a page of widget previews. 598 */ 599 private void prepareLoadWidgetPreviewsTask(int page, ArrayList<Object> widgets, 600 int cellWidth, int cellHeight, int cellCountX) { 601 // Prune all tasks that are no longer needed 602 Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator(); 603 while (iter.hasNext()) { 604 AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next(); 605 int taskPage = task.page; 606 if ((taskPage == page) || 607 taskPage < getAssociatedLowerPageBound(mCurrentPage) || 608 taskPage > getAssociatedUpperPageBound(mCurrentPage)) { 609 task.cancel(false); 610 iter.remove(); 611 } else { 612 task.setThreadPriority(getThreadPriorityForPage(taskPage)); 613 } 614 } 615 616 AsyncTaskPageData pageData = new AsyncTaskPageData(page, widgets, cellWidth, cellHeight, 617 cellCountX, new AsyncTaskCallback() { 618 @Override 619 public void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data) { 620 // Ensure that this task starts running at the correct priority 621 task.syncThreadPriority(); 622 623 // Load each of the widget/shortcut previews 624 ArrayList<Object> items = data.items; 625 ArrayList<Bitmap> images = data.generatedImages; 626 int count = items.size(); 627 int cellWidth = data.cellWidth; 628 int cellHeight = data.cellHeight; 629 for (int i = 0; i < count && !task.isCancelled(); ++i) { 630 // Before work on each item, ensure that this task is running at the correct 631 // priority 632 task.syncThreadPriority(); 633 634 Object rawInfo = items.get(i); 635 if (rawInfo instanceof AppWidgetProviderInfo) { 636 AppWidgetProviderInfo info = (AppWidgetProviderInfo) rawInfo; 637 int[] cellSpans = CellLayout.rectToCell(getResources(), 638 info.minWidth, info.minHeight, null); 639 images.add(getWidgetPreview(info, cellSpans[0],cellSpans[1], 640 cellWidth, cellHeight)); 641 } else if (rawInfo instanceof ResolveInfo) { 642 // Fill in the shortcuts information 643 ResolveInfo info = (ResolveInfo) rawInfo; 644 images.add(getShortcutPreview(info, cellWidth, cellHeight)); 645 } 646 } 647 } 648 }, 649 new AsyncTaskCallback() { 650 @Override 651 public void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data) { 652 mRunningTasks.remove(task); 653 if (task.isCancelled()) return; 654 if (task.page > getPageCount()) return; 655 if (task.pageContentType != mContentType) return; 656 onSyncWidgetPageItems(data); 657 } 658 }); 659 660 // Ensure that the task is appropriately prioritized and runs in parallel 661 AppsCustomizeAsyncTask t = new AppsCustomizeAsyncTask(page, mContentType, 662 AsyncTaskPageData.Type.LoadWidgetPreviewData); 663 t.setThreadPriority(getThreadPriorityForPage(page)); 664 t.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, pageData); 665 mRunningTasks.add(t); 666 } 667 /** 668 * Creates and executes a new AsyncTask to load the outlines for a page of content. 669 */ 670 private void prepareGenerateHoloOutlinesTask(int page, ArrayList<Object> items, 671 ArrayList<Bitmap> images) { 672 // Prune old tasks for this page 673 Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator(); 674 while (iter.hasNext()) { 675 AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next(); 676 int taskPage = task.page; 677 if ((taskPage == page) && 678 (task.dataType == AsyncTaskPageData.Type.LoadHolographicIconsData)) { 679 task.cancel(false); 680 iter.remove(); 681 } 682 } 683 684 AsyncTaskPageData pageData = new AsyncTaskPageData(page, items, images, 685 new AsyncTaskCallback() { 686 @Override 687 public void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data) { 688 // Ensure that this task starts running at the correct priority 689 task.syncThreadPriority(); 690 691 ArrayList<Bitmap> images = data.generatedImages; 692 ArrayList<Bitmap> srcImages = data.sourceImages; 693 int count = srcImages.size(); 694 Canvas c = new Canvas(); 695 for (int i = 0; i < count && !task.isCancelled(); ++i) { 696 // Before work on each item, ensure that this task is running at the correct 697 // priority 698 task.syncThreadPriority(); 699 700 Bitmap b = srcImages.get(i); 701 Bitmap outline = Bitmap.createBitmap(b.getWidth(), b.getHeight(), 702 Bitmap.Config.ARGB_8888); 703 704 c.setBitmap(outline); 705 c.save(); 706 c.drawBitmap(b, 0, 0, null); 707 c.restore(); 708 709 images.add(outline); 710 } 711 } 712 }, 713 new AsyncTaskCallback() { 714 @Override 715 public void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data) { 716 mRunningTasks.remove(task); 717 if (task.isCancelled()) return; 718 if (task.page > getPageCount()) return; 719 if (task.pageContentType != mContentType) return; 720 onHolographicPageItemsLoaded(data); 721 } 722 }); 723 724 // Ensure that the outline task always runs in the background, serially 725 AppsCustomizeAsyncTask t = 726 new AppsCustomizeAsyncTask(page, mContentType, 727 AsyncTaskPageData.Type.LoadHolographicIconsData); 728 t.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); 729 t.executeOnExecutor(AsyncTask.SERIAL_EXECUTOR, pageData); 730 mRunningTasks.add(t); 731 } 732 733 /* 734 * Widgets PagedView implementation 735 */ 736 private void setupPage(PagedViewGridLayout layout) { 737 layout.setPadding(mPageLayoutPaddingLeft, mPageLayoutPaddingTop, 738 mPageLayoutPaddingRight, mPageLayoutPaddingBottom); 739 740 // Note: We force a measure here to get around the fact that when we do layout calculations 741 // immediately after syncing, we don't have a proper width. 742 int widthSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST); 743 int heightSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.AT_MOST); 744 layout.setMinimumWidth(getPageContentWidth()); 745 layout.measure(widthSpec, heightSpec); 746 } 747 private void renderDrawableToBitmap(Drawable d, Bitmap bitmap, int x, int y, int w, int h, 748 float scaleX, float scaleY) { 749 if (bitmap != null) { 750 Canvas c = new Canvas(bitmap); 751 c.scale(scaleX, scaleY); 752 Rect oldBounds = d.copyBounds(); 753 d.setBounds(x, y, x + w, y + h); 754 d.draw(c); 755 d.setBounds(oldBounds); // Restore the bounds 756 } 757 } 758 private Bitmap getShortcutPreview(ResolveInfo info, int cellWidth, int cellHeight) { 759 // Render the icon 760 Bitmap preview = Bitmap.createBitmap(cellWidth, mAppIconSize, Config.ARGB_8888); 761 Drawable icon = mIconCache.getFullResIcon(info, mPackageManager); 762 renderDrawableToBitmap(icon, preview, 0, 0, mAppIconSize, mAppIconSize, 1f, 1f); 763 return preview; 764 } 765 private Bitmap getWidgetPreview(AppWidgetProviderInfo info, 766 int cellHSpan, int cellVSpan, int cellWidth, int cellHeight) { 767 768 // Calculate the size of the drawable 769 cellHSpan = Math.max(mMinWidgetSpan, Math.min(mMaxWidgetSpan, cellHSpan)); 770 cellVSpan = Math.max(mMinWidgetSpan, Math.min(mMaxWidgetSpan, cellVSpan)); 771 int expectedWidth = mWidgetSpacingLayout.estimateCellWidth(cellHSpan); 772 int expectedHeight = mWidgetSpacingLayout.estimateCellHeight(cellVSpan); 773 774 // Scale down the bitmap to fit the space 775 float widgetPreviewScale = (float) cellWidth / expectedWidth; 776 expectedWidth = (int) (widgetPreviewScale * expectedWidth); 777 expectedHeight = (int) (widgetPreviewScale * expectedHeight); 778 779 // Load the preview image if possible 780 String packageName = info.provider.getPackageName(); 781 Drawable drawable = null; 782 Bitmap preview = null; 783 if (info.previewImage != 0) { 784 drawable = mPackageManager.getDrawable(packageName, info.previewImage, null); 785 if (drawable == null) { 786 Log.w(LOG_TAG, "Can't load icon drawable 0x" + Integer.toHexString(info.icon) 787 + " for provider: " + info.provider); 788 } else { 789 // Scale down the preview to the dimensions we want 790 int imageWidth = drawable.getIntrinsicWidth(); 791 int imageHeight = drawable.getIntrinsicHeight(); 792 float aspect = (float) imageWidth / imageHeight; 793 int newWidth = imageWidth; 794 int newHeight = imageHeight; 795 if (aspect > 1f) { 796 newWidth = expectedWidth; 797 newHeight = (int) (imageHeight * ((float) expectedWidth / imageWidth)); 798 } else { 799 newHeight = expectedHeight; 800 newWidth = (int) (imageWidth * ((float) expectedHeight / imageHeight)); 801 } 802 803 preview = Bitmap.createBitmap(newWidth, newHeight, Config.ARGB_8888); 804 renderDrawableToBitmap(drawable, preview, 0, 0, newWidth, newHeight, 1f, 1f); 805 } 806 } 807 808 // Generate a preview image if we couldn't load one 809 if (drawable == null) { 810 Resources resources = mLauncher.getResources(); 811 int bitmapWidth; 812 int bitmapHeight; 813 814 // Specify the dimensions of the bitmap (since we are using a default preview bg with 815 // the full icon, we only imply the aspect ratio of the widget) 816 if (cellHSpan == cellVSpan) { 817 bitmapWidth = bitmapHeight = cellWidth; 818 expectedWidth = expectedHeight = mWidgetPreviewIconPaddedDimension; 819 } else if (cellHSpan >= cellVSpan) { 820 bitmapWidth = expectedWidth = cellWidth; 821 bitmapHeight = expectedHeight = mWidgetPreviewIconPaddedDimension; 822 } else { 823 // Note that in vertical widgets, we might not have enough space due to the text 824 // label, so be conservative and use the width as a height bound 825 bitmapWidth = expectedWidth = mWidgetPreviewIconPaddedDimension; 826 bitmapHeight = expectedHeight = cellWidth; 827 } 828 829 preview = Bitmap.createBitmap(bitmapWidth, bitmapHeight, Config.ARGB_8888); 830 renderDrawableToBitmap(mDefaultWidgetBackground, preview, 0, 0, expectedWidth, 831 expectedHeight, 1f,1f); 832 833 // Draw the icon in the top left corner 834 try { 835 Drawable icon = null; 836 if (info.icon > 0) icon = mPackageManager.getDrawable(packageName, info.icon, null); 837 if (icon == null) icon = resources.getDrawable(R.drawable.ic_launcher_application); 838 839 int offset = (int) (mAppIconSize * sWidgetPreviewIconPaddingPercentage); 840 renderDrawableToBitmap(icon, preview, offset, offset, 841 mAppIconSize, mAppIconSize, 1f, 1f); 842 } catch (Resources.NotFoundException e) {} 843 } 844 return preview; 845 } 846 public void syncWidgetPages() { 847 // Ensure that we have the right number of pages 848 Context context = getContext(); 849 int[] countX = { mWidgetCountX, mShortcutCountX }; 850 int[] countY = { mWidgetCountY, mShortcutCountY }; 851 Object[] collection = { mWidgets, mShortcuts }; 852 for (int i = 0; i < 2; ++i) { 853 ArrayList<Object> list = (ArrayList<Object>) collection[i]; 854 int numItemsPerPage = countX[i] * countY[i]; 855 int numItemPages = (int) Math.ceil(list.size() / (float) numItemsPerPage); 856 for (int j = 0; j < numItemPages; ++j) { 857 PagedViewGridLayout layout = new PagedViewGridLayout(context, countX[i], 858 countY[i]); 859 setupPage(layout); 860 addView(layout); 861 } 862 } 863 } 864 public void syncWidgetPageItems(int page) { 865 int[] countX = { mWidgetCountX, mShortcutCountX }; 866 int[] countY = { mWidgetCountY, mShortcutCountY }; 867 int[] widthGap = { mWidgetWidthGap, mWidgetWidthGap }; 868 int[] heightGap = { mWidgetHeightGap, mWidgetHeightGap }; 869 int[] numItemsPerPage = { mWidgetCountX * mWidgetCountY, 870 mShortcutCountX * mShortcutCountY }; 871 Object[] collection = { mWidgets, mShortcuts }; 872 int contentWidth = mWidgetSpacingLayout.getContentWidth(); 873 int contentHeight = mWidgetSpacingLayout.getContentHeight(); 874 int numWidgetPages = (int) Math.ceil(mWidgets.size() / (float) numItemsPerPage[0]); 875 int[] offsets = { page * numItemsPerPage[0], (page - numWidgetPages) * numItemsPerPage[1] }; 876 int index = (page < numWidgetPages ? 0 : 1); 877 878 // Calculate the dimensions of each cell we are giving to each widget 879 ArrayList<Object> list = (ArrayList<Object>) collection[index]; 880 ArrayList<Object> items = new ArrayList<Object>(); 881 int cellWidth = ((contentWidth - mPageLayoutPaddingLeft - mPageLayoutPaddingRight 882 - ((countX[index] - 1) * widthGap[index])) / countX[index]); 883 int cellHeight = ((contentHeight - mPageLayoutPaddingTop - mPageLayoutPaddingBottom 884 - ((countY[index] - 1) * heightGap[index])) / countY[index]); 885 886 int offset = offsets[index]; 887 for (int i = offset; i < Math.min(offset + numItemsPerPage[index], list.size()); ++i) { 888 items.add(list.get(i)); 889 } 890 891 prepareLoadWidgetPreviewsTask(page, items, cellWidth, cellHeight, countX[index]); 892 } 893 private void onSyncWidgetPageItems(AsyncTaskPageData data) { 894 int page = data.page; 895 PagedViewGridLayout layout = (PagedViewGridLayout) getChildAt(page); 896 // Only set the column count once we have items 897 layout.setColumnCount(layout.getCellCountX()); 898 899 ArrayList<Object> items = data.items; 900 int count = items.size(); 901 int cellWidth = data.cellWidth; 902 int cellHeight = data.cellHeight; 903 int cellCountX = data.cellCountX; 904 for (int i = 0; i < count; ++i) { 905 Object rawInfo = items.get(i); 906 PendingAddItemInfo createItemInfo = null; 907 PagedViewWidget widget = (PagedViewWidget) mLayoutInflater.inflate( 908 R.layout.apps_customize_widget, layout, false); 909 if (rawInfo instanceof AppWidgetProviderInfo) { 910 // Fill in the widget information 911 AppWidgetProviderInfo info = (AppWidgetProviderInfo) rawInfo; 912 createItemInfo = new PendingAddWidgetInfo(info, null, null); 913 int[] cellSpans = CellLayout.rectToCell(getResources(), 914 info.minWidth, info.minHeight, null); 915 FastBitmapDrawable preview = new FastBitmapDrawable(data.generatedImages.get(i)); 916 widget.applyFromAppWidgetProviderInfo(info, preview, -1, cellSpans, 917 mHolographicOutlineHelper); 918 widget.setTag(createItemInfo); 919 } else if (rawInfo instanceof ResolveInfo) { 920 // Fill in the shortcuts information 921 ResolveInfo info = (ResolveInfo) rawInfo; 922 createItemInfo = new PendingAddItemInfo(); 923 createItemInfo.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT; 924 createItemInfo.componentName = new ComponentName(info.activityInfo.packageName, 925 info.activityInfo.name); 926 FastBitmapDrawable preview = new FastBitmapDrawable(data.generatedImages.get(i)); 927 widget.applyFromResolveInfo(mPackageManager, info, preview, 928 mHolographicOutlineHelper); 929 widget.setTag(createItemInfo); 930 } 931 widget.setOnClickListener(this); 932 widget.setOnLongClickListener(this); 933 widget.setOnTouchListener(this); 934 935 // Layout each widget 936 int ix = i % cellCountX; 937 int iy = i / cellCountX; 938 GridLayout.LayoutParams lp = new GridLayout.LayoutParams( 939 GridLayout.spec(iy, GridLayout.LEFT, GridLayout.CAN_STRETCH), 940 GridLayout.spec(ix, GridLayout.TOP, GridLayout.CAN_STRETCH)); 941 lp.width = cellWidth; 942 lp.height = cellHeight; 943 if (ix > 0) lp.leftMargin = mWidgetWidthGap; 944 if (iy > 0) lp.topMargin = mWidgetHeightGap; 945 layout.addView(widget, lp); 946 } 947 948 invalidate(); 949 forceUpdateAdjacentPagesAlpha(); 950 prepareGenerateHoloOutlinesTask(data.page, data.items, data.generatedImages); 951 } 952 private void onHolographicPageItemsLoaded(AsyncTaskPageData data) { 953 // Invalidate early to short-circuit children invalidates 954 invalidate(); 955 956 int page = data.page; 957 ViewGroup layout = (ViewGroup) getChildAt(page); 958 if (layout instanceof PagedViewCellLayout) { 959 PagedViewCellLayout cl = (PagedViewCellLayout) layout; 960 int count = cl.getPageChildCount(); 961 if (count != data.generatedImages.size()) return; 962 for (int i = 0; i < count; ++i) { 963 PagedViewIcon icon = (PagedViewIcon) cl.getChildOnPageAt(i); 964 icon.setHolographicOutline(data.generatedImages.get(i)); 965 } 966 } else { 967 int count = layout.getChildCount(); 968 if (count != data.generatedImages.size()) return; 969 for (int i = 0; i < count; ++i) { 970 View v = layout.getChildAt(i); 971 ((PagedViewWidget) v).setHolographicOutline(data.generatedImages.get(i)); 972 } 973 } 974 } 975 976 @Override 977 public void syncPages() { 978 removeAllViews(); 979 980 // Remove all background asyc tasks if we are loading content anew 981 Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator(); 982 while (iter.hasNext()) { 983 AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next(); 984 task.cancel(false); 985 iter.remove(); 986 } 987 988 switch (mContentType) { 989 case Applications: 990 syncAppsPages(); 991 break; 992 case Widgets: 993 syncWidgetPages(); 994 break; 995 } 996 } 997 @Override 998 public void syncPageItems(int page) { 999 switch (mContentType) { 1000 case Applications: 1001 syncAppsPageItems(page); 1002 break; 1003 case Widgets: 1004 syncWidgetPageItems(page); 1005 break; 1006 } 1007 } 1008 1009 /** 1010 * Used by the parent to get the content width to set the tab bar to 1011 * @return 1012 */ 1013 public int getPageContentWidth() { 1014 return mContentWidth; 1015 } 1016 1017 @Override 1018 protected void onPageBeginMoving() { 1019 /* TO BE ENABLED LATER 1020 setChildrenDrawnWithCacheEnabled(true); 1021 for (int i = 0; i < getChildCount(); ++i) { 1022 View v = getChildAt(i); 1023 if (v instanceof PagedViewCellLayout) { 1024 ((PagedViewCellLayout) v).setChildrenDrawingCacheEnabled(true); 1025 } 1026 } 1027 */ 1028 super.onPageBeginMoving(); 1029 } 1030 1031 @Override 1032 protected void onPageEndMoving() { 1033 /* TO BE ENABLED LATER 1034 for (int i = 0; i < getChildCount(); ++i) { 1035 View v = getChildAt(i); 1036 if (v instanceof PagedViewCellLayout) { 1037 ((PagedViewCellLayout) v).setChildrenDrawingCacheEnabled(false); 1038 } 1039 } 1040 setChildrenDrawnWithCacheEnabled(false); 1041 */ 1042 super.onPageEndMoving(); 1043 } 1044 1045 /* 1046 * AllAppsView implementation 1047 */ 1048 @Override 1049 public void setup(Launcher launcher, DragController dragController) { 1050 mLauncher = launcher; 1051 mDragController = dragController; 1052 } 1053 @Override 1054 public void zoom(float zoom, boolean animate) { 1055 // TODO-APPS_CUSTOMIZE: Call back to mLauncher.zoomed() 1056 } 1057 @Override 1058 public boolean isVisible() { 1059 return (getVisibility() == VISIBLE); 1060 } 1061 @Override 1062 public boolean isAnimating() { 1063 return false; 1064 } 1065 @Override 1066 public void setApps(ArrayList<ApplicationInfo> list) { 1067 mApps = list; 1068 Collections.sort(mApps, LauncherModel.APP_NAME_COMPARATOR); 1069 1070 // The next layout pass will trigger data-ready if both widgets and apps are set, so 1071 // request a layout to do this test and invalidate the page data when ready. 1072 if (testDataReady()) requestLayout(); 1073 } 1074 private void addAppsWithoutInvalidate(ArrayList<ApplicationInfo> list) { 1075 // We add it in place, in alphabetical order 1076 int count = list.size(); 1077 for (int i = 0; i < count; ++i) { 1078 ApplicationInfo info = list.get(i); 1079 int index = Collections.binarySearch(mApps, info, LauncherModel.APP_NAME_COMPARATOR); 1080 if (index < 0) { 1081 mApps.add(-(index + 1), info); 1082 } 1083 } 1084 } 1085 @Override 1086 public void addApps(ArrayList<ApplicationInfo> list) { 1087 addAppsWithoutInvalidate(list); 1088 invalidatePageData(); 1089 } 1090 private int findAppByComponent(List<ApplicationInfo> list, ApplicationInfo item) { 1091 ComponentName removeComponent = item.intent.getComponent(); 1092 int length = list.size(); 1093 for (int i = 0; i < length; ++i) { 1094 ApplicationInfo info = list.get(i); 1095 if (info.intent.getComponent().equals(removeComponent)) { 1096 return i; 1097 } 1098 } 1099 return -1; 1100 } 1101 private void removeAppsWithoutInvalidate(ArrayList<ApplicationInfo> list) { 1102 // loop through all the apps and remove apps that have the same component 1103 int length = list.size(); 1104 for (int i = 0; i < length; ++i) { 1105 ApplicationInfo info = list.get(i); 1106 int removeIndex = findAppByComponent(mApps, info); 1107 if (removeIndex > -1) { 1108 mApps.remove(removeIndex); 1109 } 1110 } 1111 } 1112 @Override 1113 public void removeApps(ArrayList<ApplicationInfo> list) { 1114 removeAppsWithoutInvalidate(list); 1115 invalidatePageData(); 1116 } 1117 @Override 1118 public void updateApps(ArrayList<ApplicationInfo> list) { 1119 // We remove and re-add the updated applications list because it's properties may have 1120 // changed (ie. the title), and this will ensure that the items will be in their proper 1121 // place in the list. 1122 removeAppsWithoutInvalidate(list); 1123 addAppsWithoutInvalidate(list); 1124 invalidatePageData(); 1125 } 1126 1127 @Override 1128 public void reset() { 1129 if (mContentType != ContentType.Applications) { 1130 // Reset to the first page of the Apps pane 1131 AppsCustomizeTabHost tabs = (AppsCustomizeTabHost) 1132 mLauncher.findViewById(R.id.apps_customize_pane); 1133 tabs.setCurrentTabByTag(tabs.getTabTagForContentType(ContentType.Applications)); 1134 } else if (getCurrentPage() != 0) { 1135 setCurrentPage(0); 1136 invalidatePageData(); 1137 } 1138 } 1139 @Override 1140 public void dumpState() { 1141 // TODO: Dump information related to current list of Applications, Widgets, etc. 1142 ApplicationInfo.dumpApplicationInfoList(LOG_TAG, "mApps", mApps); 1143 dumpAppWidgetProviderInfoList(LOG_TAG, "mWidgets", mWidgets); 1144 dumpAppWidgetProviderInfoList(LOG_TAG, "mShortcuts", mShortcuts); 1145 } 1146 private void dumpAppWidgetProviderInfoList(String tag, String label, 1147 ArrayList<Object> list) { 1148 Log.d(tag, label + " size=" + list.size()); 1149 for (Object i: list) { 1150 if (i instanceof AppWidgetProviderInfo) { 1151 AppWidgetProviderInfo info = (AppWidgetProviderInfo) i; 1152 Log.d(tag, " label=\"" + info.label + "\" previewImage=" + info.previewImage 1153 + " resizeMode=" + info.resizeMode + " configure=" + info.configure 1154 + " initialLayout=" + info.initialLayout 1155 + " minWidth=" + info.minWidth + " minHeight=" + info.minHeight); 1156 } else if (i instanceof ResolveInfo) { 1157 ResolveInfo info = (ResolveInfo) i; 1158 Log.d(tag, " label=\"" + info.loadLabel(mPackageManager) + "\" icon=" 1159 + info.icon); 1160 } 1161 } 1162 } 1163 @Override 1164 public void surrender() { 1165 // TODO: If we are in the middle of any process (ie. for holographic outlines, etc) we 1166 // should stop this now. 1167 } 1168 1169 /* 1170 * We load an extra page on each side to prevent flashes from scrolling and loading of the 1171 * widget previews in the background with the AsyncTasks. 1172 */ 1173 protected int getAssociatedLowerPageBound(int page) { 1174 return Math.max(0, page - 2); 1175 } 1176 protected int getAssociatedUpperPageBound(int page) { 1177 final int count = getChildCount(); 1178 return Math.min(page + 2, count - 1); 1179 } 1180 1181 @Override 1182 protected String getCurrentPageDescription() { 1183 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 1184 int stringId = R.string.default_scroll_format; 1185 switch (mContentType) { 1186 case Applications: 1187 stringId = R.string.apps_customize_apps_scroll_format; 1188 break; 1189 case Widgets: 1190 stringId = R.string.apps_customize_widgets_scroll_format; 1191 break; 1192 } 1193 return String.format(mContext.getString(stringId), page + 1, getChildCount()); 1194 } 1195} 1196