Workspace.java revision d74c984fcc61f86160476a2543faff715e3ee2fd
1/* 2 * Copyright (C) 2008 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.Animator; 20import android.animation.AnimatorListenerAdapter; 21import android.animation.AnimatorSet; 22import android.animation.ObjectAnimator; 23import android.animation.TimeInterpolator; 24import android.animation.ValueAnimator; 25import android.animation.Animator.AnimatorListener; 26import android.animation.ValueAnimator.AnimatorUpdateListener; 27import android.app.AlertDialog; 28import android.app.WallpaperManager; 29import android.appwidget.AppWidgetManager; 30import android.appwidget.AppWidgetProviderInfo; 31import android.content.ClipData; 32import android.content.ClipDescription; 33import android.content.ComponentName; 34import android.content.Context; 35import android.content.Intent; 36import android.content.pm.PackageManager; 37import android.content.res.Resources; 38import android.content.res.TypedArray; 39import android.graphics.Bitmap; 40import android.graphics.Camera; 41import android.graphics.Canvas; 42import android.graphics.Matrix; 43import android.graphics.Paint; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region.Op; 47import android.graphics.drawable.Drawable; 48import android.os.IBinder; 49import android.os.Parcelable; 50import android.util.AttributeSet; 51import android.util.DisplayMetrics; 52import android.util.Log; 53import android.util.Pair; 54import android.view.Display; 55import android.view.DragEvent; 56import android.view.MotionEvent; 57import android.view.View; 58import android.view.ViewGroup; 59import android.view.animation.DecelerateInterpolator; 60import android.widget.TextView; 61import android.widget.Toast; 62 63import com.android.launcher.R; 64import com.android.launcher2.FolderIcon.FolderRingAnimator; 65import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 66 67import java.util.ArrayList; 68import java.util.HashSet; 69import java.util.List; 70 71/** 72 * The workspace is a wide area with a wallpaper and a finite number of pages. 73 * Each page contains a number of icons, folders or widgets the user can 74 * interact with. A workspace is meant to be used with a fixed width only. 75 */ 76public class Workspace extends SmoothPagedView 77 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 78 DragController.DragListener { 79 @SuppressWarnings({"UnusedDeclaration"}) 80 private static final String TAG = "Launcher.Workspace"; 81 82 // Y rotation to apply to the workspace screens 83 private static final float WORKSPACE_ROTATION = 12.5f; 84 85 // These are extra scale factors to apply to the mini home screens 86 // so as to achieve the desired transform 87 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 88 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 89 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 90 91 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 92 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 93 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 94 95 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 96 private static final int BACKGROUND_FADE_IN_DURATION = 350; 97 98 // These animators are used to fade the children's outlines 99 private ObjectAnimator mChildrenOutlineFadeInAnimation; 100 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 101 private float mChildrenOutlineAlpha = 0; 102 103 // These properties refer to the background protection gradient used for AllApps and Customize 104 private ValueAnimator mBackgroundFadeInAnimation; 105 private ValueAnimator mBackgroundFadeOutAnimation; 106 private Drawable mBackground; 107 boolean mDrawBackground = true; 108 private float mBackgroundAlpha = 0; 109 private float mOverScrollMaxBackgroundAlpha = 0.0f; 110 private int mOverScrollPageIndex = -1; 111 112 private final WallpaperManager mWallpaperManager; 113 private IBinder mWindowToken; 114 115 private int mDefaultPage; 116 117 /** 118 * CellInfo for the cell that is currently being dragged 119 */ 120 private CellLayout.CellInfo mDragInfo; 121 122 /** 123 * Target drop area calculated during last acceptDrop call. 124 */ 125 private int[] mTargetCell = new int[2]; 126 127 /** 128 * The CellLayout that is currently being dragged over 129 */ 130 private CellLayout mDragTargetLayout = null; 131 132 private Launcher mLauncher; 133 private IconCache mIconCache; 134 private DragController mDragController; 135 136 // These are temporary variables to prevent having to allocate a new object just to 137 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 138 private int[] mTempCell = new int[2]; 139 private int[] mTempEstimate = new int[2]; 140 private float[] mDragViewVisualCenter = new float[2]; 141 private float[] mTempDragCoordinates = new float[2]; 142 private float[] mTempTouchCoordinates = new float[2]; 143 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 144 private float[] mTempDragBottomRightCoordinates = new float[2]; 145 private Matrix mTempInverseMatrix = new Matrix(); 146 147 private SpringLoadedDragController mSpringLoadedDragController; 148 private float mSpringLoadedShrinkFactor; 149 150 private static final int DEFAULT_CELL_COUNT_X = 4; 151 private static final int DEFAULT_CELL_COUNT_Y = 4; 152 153 // State variable that indicates whether the pages are small (ie when you're 154 // in all apps or customize mode) 155 156 enum State { NORMAL, SPRING_LOADED, SMALL }; 157 private State mState; 158 private boolean mIsSwitchingState = false; 159 160 private boolean mSwitchStateAfterFirstLayout = false; 161 private State mStateAfterFirstLayout; 162 163 private AnimatorSet mAnimator; 164 private AnimatorListener mShrinkAnimationListener; 165 private AnimatorListener mUnshrinkAnimationListener; 166 167 boolean mAnimatingViewIntoPlace = false; 168 boolean mIsDragOccuring = false; 169 boolean mChildrenLayersEnabled = true; 170 171 /** Is the user is dragging an item near the edge of a page? */ 172 private boolean mInScrollArea = false; 173 174 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 175 private Bitmap mDragOutline = null; 176 private final Rect mTempRect = new Rect(); 177 private final int[] mTempXY = new int[2]; 178 179 // Paint used to draw external drop outline 180 private final Paint mExternalDragOutlinePaint = new Paint(); 181 182 // Camera and Matrix used to determine the final position of a neighboring CellLayout 183 private final Matrix mMatrix = new Matrix(); 184 private final Camera mCamera = new Camera(); 185 private final float mTempFloat2[] = new float[2]; 186 187 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 188 int mWallpaperWidth; 189 int mWallpaperHeight; 190 WallpaperOffsetInterpolator mWallpaperOffset; 191 boolean mUpdateWallpaperOffsetImmediately = false; 192 boolean mSyncWallpaperOffsetWithScroll = true; 193 private Runnable mDelayedResizeRunnable; 194 195 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 196 private static final int FOLDER_CREATION_TIMEOUT = 250; 197 private final Alarm mFolderCreationAlarm = new Alarm(); 198 private FolderRingAnimator mDragFolderRingAnimator = null; 199 private View mLastDragOverView = null; 200 private boolean mCreateUserFolderOnDrop = false; 201 202 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 203 private float mXDown; 204 private float mYDown; 205 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 206 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 207 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 208 209 /** 210 * Used to inflate the Workspace from XML. 211 * 212 * @param context The application's context. 213 * @param attrs The attributes set containing the Workspace's customization values. 214 */ 215 public Workspace(Context context, AttributeSet attrs) { 216 this(context, attrs, 0); 217 } 218 219 /** 220 * Used to inflate the Workspace from XML. 221 * 222 * @param context The application's context. 223 * @param attrs The attributes set containing the Workspace's customization values. 224 * @param defStyle Unused. 225 */ 226 public Workspace(Context context, AttributeSet attrs, int defStyle) { 227 super(context, attrs, defStyle); 228 mContentIsRefreshable = false; 229 230 // With workspace, data is available straight from the get-go 231 setDataIsReady(); 232 233 if (!LauncherApplication.isScreenLarge()) { 234 mFadeInAdjacentScreens = false; 235 } 236 237 mWallpaperManager = WallpaperManager.getInstance(context); 238 239 int cellCountX = DEFAULT_CELL_COUNT_X; 240 int cellCountY = DEFAULT_CELL_COUNT_Y; 241 242 TypedArray a = context.obtainStyledAttributes(attrs, 243 R.styleable.Workspace, defStyle, 0); 244 245 final Resources res = context.getResources(); 246 if (LauncherApplication.isScreenLarge()) { 247 // Determine number of rows/columns dynamically 248 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 249 // Around that ratio we should make cells the same size in portrait and 250 // landscape 251 TypedArray actionBarSizeTypedArray = 252 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 253 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 254 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 255 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 256 257 cellCountX = 1; 258 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 259 cellCountX++; 260 } 261 262 cellCountY = 1; 263 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 264 <= smallestScreenDim - systemBarHeight) { 265 cellCountY++; 266 } 267 } 268 269 mSpringLoadedShrinkFactor = 270 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 271 272 // if the value is manually specified, use that instead 273 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 274 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 275 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 276 a.recycle(); 277 278 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 279 setHapticFeedbackEnabled(false); 280 281 initWorkspace(); 282 283 // Disable multitouch across the workspace/all apps/customize tray 284 setMotionEventSplittingEnabled(true); 285 } 286 287 public void onDragStart(DragSource source, Object info, int dragAction) { 288 mIsDragOccuring = true; 289 updateChildrenLayersEnabled(); 290 } 291 292 public void onDragEnd() { 293 mIsDragOccuring = false; 294 updateChildrenLayersEnabled(); 295 } 296 297 /** 298 * Initializes various states for this workspace. 299 */ 300 protected void initWorkspace() { 301 Context context = getContext(); 302 mCurrentPage = mDefaultPage; 303 Launcher.setScreen(mCurrentPage); 304 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 305 mIconCache = app.getIconCache(); 306 mExternalDragOutlinePaint.setAntiAlias(true); 307 setWillNotDraw(false); 308 309 try { 310 final Resources res = getResources(); 311 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 312 } catch (Resources.NotFoundException e) { 313 // In this case, we will skip drawing background protection 314 } 315 316 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 317 @Override 318 public void onAnimationStart(Animator animation) { 319 mIsSwitchingState = true; 320 } 321 322 @Override 323 public void onAnimationEnd(Animator animation) { 324 mIsSwitchingState = false; 325 mSyncWallpaperOffsetWithScroll = true; 326 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 327 mAnimator = null; 328 updateChildrenLayersEnabled(); 329 } 330 }; 331 mShrinkAnimationListener = new AnimatorListenerAdapter() { 332 @Override 333 public void onAnimationStart(Animator animation) { 334 mIsSwitchingState = true; 335 } 336 @Override 337 public void onAnimationEnd(Animator animation) { 338 mIsSwitchingState = false; 339 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 340 mAnimator = null; 341 } 342 }; 343 mSnapVelocity = 600; 344 mWallpaperOffset = new WallpaperOffsetInterpolator(); 345 } 346 347 @Override 348 protected int getScrollMode() { 349 return SmoothPagedView.X_LARGE_MODE; 350 } 351 352 private void onAddView(View child) { 353 if (!(child instanceof CellLayout)) { 354 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 355 } 356 CellLayout cl = ((CellLayout) child); 357 cl.setOnInterceptTouchListener(this); 358 cl.setClickable(true); 359 cl.enableHardwareLayers(); 360 } 361 362 @Override 363 public void addView(View child, int index, LayoutParams params) { 364 onAddView(child); 365 super.addView(child, index, params); 366 } 367 368 @Override 369 public void addView(View child) { 370 onAddView(child); 371 super.addView(child); 372 } 373 374 @Override 375 public void addView(View child, int index) { 376 onAddView(child); 377 super.addView(child, index); 378 } 379 380 @Override 381 public void addView(View child, int width, int height) { 382 onAddView(child); 383 super.addView(child, width, height); 384 } 385 386 @Override 387 public void addView(View child, LayoutParams params) { 388 onAddView(child); 389 super.addView(child, params); 390 } 391 392 /** 393 * @return The open folder on the current screen, or null if there is none 394 */ 395 Folder getOpenFolder() { 396 DragLayer dragLayer = mLauncher.getDragLayer(); 397 int count = dragLayer.getChildCount(); 398 for (int i = 0; i < count; i++) { 399 View child = dragLayer.getChildAt(i); 400 if (child instanceof Folder) { 401 Folder folder = (Folder) child; 402 if (folder.getInfo().opened) 403 return folder; 404 } 405 } 406 return null; 407 } 408 409 boolean isTouchActive() { 410 return mTouchState != TOUCH_STATE_REST; 411 } 412 413 /** 414 * Adds the specified child in the specified screen. The position and dimension of 415 * the child are defined by x, y, spanX and spanY. 416 * 417 * @param child The child to add in one of the workspace's screens. 418 * @param screen The screen in which to add the child. 419 * @param x The X position of the child in the screen's grid. 420 * @param y The Y position of the child in the screen's grid. 421 * @param spanX The number of cells spanned horizontally by the child. 422 * @param spanY The number of cells spanned vertically by the child. 423 */ 424 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 425 addInScreen(child, screen, x, y, spanX, spanY, false); 426 } 427 428 void addInFullScreen(View child, int screen) { 429 addInScreen(child, screen, 0, 0, -1, -1); 430 } 431 432 /** 433 * Adds the specified child in the specified screen. The position and dimension of 434 * the child are defined by x, y, spanX and spanY. 435 * 436 * @param child The child to add in one of the workspace's screens. 437 * @param screen The screen in which to add the child. 438 * @param x The X position of the child in the screen's grid. 439 * @param y The Y position of the child in the screen's grid. 440 * @param spanX The number of cells spanned horizontally by the child. 441 * @param spanY The number of cells spanned vertically by the child. 442 * @param insert When true, the child is inserted at the beginning of the children list. 443 */ 444 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 445 if (screen < 0 || screen >= getChildCount()) { 446 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 447 + " (was " + screen + "); skipping child"); 448 return; 449 } 450 451 final CellLayout group = (CellLayout) getChildAt(screen); 452 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 453 if (lp == null) { 454 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 455 } else { 456 lp.cellX = x; 457 lp.cellY = y; 458 lp.cellHSpan = spanX; 459 lp.cellVSpan = spanY; 460 } 461 462 if (spanX < 0 && spanY < 0) { 463 lp.isLockedToGrid = false; 464 } 465 466 // Get the canonical child id to uniquely represent this view in this screen 467 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 468 boolean markCellsAsOccupied = !(child instanceof Folder); 469 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 470 // TODO: This branch occurs when the workspace is adding views 471 // outside of the defined grid 472 // maybe we should be deleting these items from the LauncherModel? 473 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 474 } 475 476 if (!(child instanceof Folder)) { 477 child.setHapticFeedbackEnabled(false); 478 child.setOnLongClickListener(mLongClickListener); 479 } 480 if (child instanceof DropTarget) { 481 mDragController.addDropTarget((DropTarget) child); 482 } 483 } 484 485 /** 486 * Check if the point (x, y) hits a given page. 487 */ 488 private boolean hitsPage(int index, float x, float y) { 489 final View page = getChildAt(index); 490 if (page != null) { 491 float[] localXY = { x, y }; 492 mapPointFromSelfToChild(page, localXY); 493 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 494 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 495 } 496 return false; 497 } 498 499 @Override 500 protected boolean hitsPreviousPage(float x, float y) { 501 // mNextPage is set to INVALID_PAGE whenever we are stationary. 502 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 503 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 504 return hitsPage(current - 1, x, y); 505 } 506 507 @Override 508 protected boolean hitsNextPage(float x, float y) { 509 // mNextPage is set to INVALID_PAGE whenever we are stationary. 510 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 511 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 512 return hitsPage(current + 1, x, y); 513 } 514 515 /** 516 * Called directly from a CellLayout (not by the framework), after we've been added as a 517 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 518 * that it should intercept touch events, which is not something that is normally supported. 519 */ 520 @Override 521 public boolean onTouch(View v, MotionEvent event) { 522 return (isSmall() || mIsSwitchingState); 523 } 524 525 protected void onWindowVisibilityChanged (int visibility) { 526 mLauncher.onWindowVisibilityChanged(visibility); 527 } 528 529 @Override 530 public boolean dispatchUnhandledMove(View focused, int direction) { 531 if (isSmall() || mIsSwitchingState) { 532 // when the home screens are shrunken, shouldn't allow side-scrolling 533 return false; 534 } 535 return super.dispatchUnhandledMove(focused, direction); 536 } 537 538 @Override 539 public boolean onInterceptTouchEvent(MotionEvent ev) { 540 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 541 mXDown = ev.getX(); 542 mYDown = ev.getY(); 543 } 544 545 return super.onInterceptTouchEvent(ev); 546 } 547 548 @Override 549 protected void determineScrollingStart(MotionEvent ev) { 550 if (!isSmall() && !mIsSwitchingState) { 551 float deltaX = Math.abs(ev.getX() - mXDown); 552 float deltaY = Math.abs(ev.getY() - mYDown); 553 554 if (Float.compare(deltaX, 0f) == 0) return; 555 556 float slope = deltaY / deltaX; 557 float theta = (float) Math.atan(slope); 558 559 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 560 cancelCurrentPageLongPress(); 561 } 562 563 if (theta > MAX_SWIPE_ANGLE) { 564 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 565 return; 566 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 567 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 568 // increase the touch slop to make it harder to begin scrolling the workspace. This 569 // results in vertically scrolling widgets to more easily. The higher the angle, the 570 // more we increase touch slop. 571 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 572 float extraRatio = (float) 573 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 574 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 575 } else { 576 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 577 super.determineScrollingStart(ev); 578 } 579 } 580 } 581 582 @Override 583 protected boolean isScrollingIndicatorEnabled() { 584 return mState != State.SPRING_LOADED; 585 } 586 587 protected void onPageBeginMoving() { 588 super.onPageBeginMoving(); 589 590 if (isHardwareAccelerated()) { 591 updateChildrenLayersEnabled(); 592 } else { 593 if (mNextPage != INVALID_PAGE) { 594 // we're snapping to a particular screen 595 enableChildrenCache(mCurrentPage, mNextPage); 596 } else { 597 // this is when user is actively dragging a particular screen, they might 598 // swipe it either left or right (but we won't advance by more than one screen) 599 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 600 } 601 } 602 603 // Only show page outlines as we pan if we are on large screen 604 if (LauncherApplication.isScreenLarge()) { 605 showOutlines(); 606 } 607 } 608 609 protected void onPageEndMoving() { 610 super.onPageEndMoving(); 611 612 if (isHardwareAccelerated()) { 613 updateChildrenLayersEnabled(); 614 } else { 615 clearChildrenCache(); 616 } 617 618 // Hide the outlines, as long as we're not dragging 619 if (!mDragController.dragging()) { 620 // Only hide page outlines as we pan if we are on large screen 621 if (LauncherApplication.isScreenLarge()) { 622 hideOutlines(); 623 } 624 } 625 mOverScrollMaxBackgroundAlpha = 0.0f; 626 mOverScrollPageIndex = -1; 627 628 if (mDelayedResizeRunnable != null) { 629 mDelayedResizeRunnable.run(); 630 mDelayedResizeRunnable = null; 631 } 632 } 633 634 @Override 635 protected void notifyPageSwitchListener() { 636 super.notifyPageSwitchListener(); 637 Launcher.setScreen(mCurrentPage); 638 }; 639 640 // As a ratio of screen height, the total distance we want the parallax effect to span 641 // vertically 642 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 643 return 1.1f; 644 } 645 646 // As a ratio of screen height, the total distance we want the parallax effect to span 647 // horizontally 648 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 649 float aspectRatio = width / (float) height; 650 651 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 652 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 653 // We will use these two data points to extrapolate how much the wallpaper parallax effect 654 // to span (ie travel) at any aspect ratio: 655 656 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 657 final float ASPECT_RATIO_PORTRAIT = 10/16f; 658 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 659 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 660 661 // To find out the desired width at different aspect ratios, we use the following two 662 // formulas, where the coefficient on x is the aspect ratio (width/height): 663 // (16/10)x + y = 1.5 664 // (10/16)x + y = 1.2 665 // We solve for x and y and end up with a final formula: 666 final float x = 667 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 668 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 669 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 670 return x * aspectRatio + y; 671 } 672 673 // The range of scroll values for Workspace 674 private int getScrollRange() { 675 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 676 } 677 678 protected void setWallpaperDimension() { 679 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 680 DisplayMetrics displayMetrics = new DisplayMetrics(); 681 display.getRealMetrics(displayMetrics); 682 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 683 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 684 685 // We need to ensure that there is enough extra space in the wallpaper for the intended 686 // parallax effects 687 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 688 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 689 new Thread("setWallpaperDimension") { 690 public void run() { 691 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 692 } 693 }.start(); 694 } 695 696 public void setVerticalWallpaperOffset(float offset) { 697 mWallpaperOffset.setFinalY(offset); 698 } 699 public float getVerticalWallpaperOffset() { 700 return mWallpaperOffset.getCurrY(); 701 } 702 public void setHorizontalWallpaperOffset(float offset) { 703 mWallpaperOffset.setFinalX(offset); 704 } 705 public float getHorizontalWallpaperOffset() { 706 return mWallpaperOffset.getCurrX(); 707 } 708 709 private float wallpaperOffsetForCurrentScroll() { 710 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 711 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 712 // The wallpaper travel width is how far, from left to right, the wallpaper will move 713 // at this orientation (for example, in portrait mode we don't move all the way to the 714 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 715 int wallpaperTravelWidth = (int) (display.getWidth() * 716 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 717 if (!isStaticWallpaper) { 718 wallpaperTravelWidth = mWallpaperWidth; 719 } 720 721 // Set wallpaper offset steps (1 / (number of screens - 1)) 722 // We have 3 vertical offset states (centered, and then top/bottom aligned 723 // for all apps/customize) 724 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 725 726 int scrollRange = getScrollRange(); 727 float scrollProgressOffset = 0; 728 729 // Account for overscroll: you only see the absolute edge of the wallpaper if 730 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 731 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 732 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 733 if (isStaticWallpaper) { 734 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 735 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 736 scrollRange += 2 * overscrollOffset; 737 } 738 739 float scrollProgress = 740 mScrollX / (float) scrollRange + scrollProgressOffset; 741 float offsetInDips = wallpaperTravelWidth * scrollProgress + 742 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 743 float offset = offsetInDips / (float) mWallpaperWidth; 744 return offset; 745 } 746 private void syncWallpaperOffsetWithScroll() { 747 final boolean enableWallpaperEffects = isHardwareAccelerated(); 748 if (enableWallpaperEffects) { 749 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 750 } 751 } 752 753 public void updateWallpaperOffsetImmediately() { 754 mUpdateWallpaperOffsetImmediately = true; 755 } 756 757 private void updateWallpaperOffsets() { 758 boolean updateNow = false; 759 boolean keepUpdating = true; 760 if (mUpdateWallpaperOffsetImmediately) { 761 updateNow = true; 762 keepUpdating = false; 763 mWallpaperOffset.jumpToFinal(); 764 mUpdateWallpaperOffsetImmediately = false; 765 } else { 766 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 767 } 768 if (updateNow) { 769 if (mWindowToken != null) { 770 mWallpaperManager.setWallpaperOffsets(mWindowToken, 771 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 772 } 773 } 774 if (keepUpdating) { 775 fastInvalidate(); 776 } 777 } 778 779 class WallpaperOffsetInterpolator { 780 float mFinalHorizontalWallpaperOffset = 0.0f; 781 float mFinalVerticalWallpaperOffset = 0.5f; 782 float mHorizontalWallpaperOffset = 0.0f; 783 float mVerticalWallpaperOffset = 0.5f; 784 long mLastWallpaperOffsetUpdateTime; 785 boolean mIsMovingFast; 786 boolean mOverrideHorizontalCatchupConstant; 787 float mHorizontalCatchupConstant = 0.35f; 788 float mVerticalCatchupConstant = 0.35f; 789 790 public WallpaperOffsetInterpolator() { 791 } 792 793 public void setOverrideHorizontalCatchupConstant(boolean override) { 794 mOverrideHorizontalCatchupConstant = override; 795 } 796 797 public void setHorizontalCatchupConstant(float f) { 798 mHorizontalCatchupConstant = f; 799 } 800 801 public void setVerticalCatchupConstant(float f) { 802 mVerticalCatchupConstant = f; 803 } 804 805 public boolean computeScrollOffset() { 806 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 807 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 808 mIsMovingFast = false; 809 return false; 810 } 811 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 812 boolean isLandscape = display.getWidth() > display.getHeight(); 813 814 long currentTime = System.currentTimeMillis(); 815 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 816 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 817 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 818 819 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 820 if (!mIsMovingFast && xdiff > 0.07) { 821 mIsMovingFast = true; 822 } 823 824 float fractionToCatchUpIn1MsHorizontal; 825 if (mOverrideHorizontalCatchupConstant) { 826 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 827 } else if (mIsMovingFast) { 828 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 829 } else { 830 // slow 831 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 832 } 833 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 834 835 fractionToCatchUpIn1MsHorizontal /= 33f; 836 fractionToCatchUpIn1MsVertical /= 33f; 837 838 final float UPDATE_THRESHOLD = 0.00001f; 839 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 840 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 841 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 842 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 843 if (jumpToFinalValue) { 844 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 845 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 846 } else { 847 float percentToCatchUpVertical = 848 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 849 float percentToCatchUpHorizontal = 850 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 851 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 852 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 853 } 854 855 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 856 return true; 857 } 858 859 public float getCurrX() { 860 return mHorizontalWallpaperOffset; 861 } 862 863 public float getFinalX() { 864 return mFinalHorizontalWallpaperOffset; 865 } 866 867 public float getCurrY() { 868 return mVerticalWallpaperOffset; 869 } 870 871 public float getFinalY() { 872 return mFinalVerticalWallpaperOffset; 873 } 874 875 public void setFinalX(float x) { 876 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 877 } 878 879 public void setFinalY(float y) { 880 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 881 } 882 883 public void jumpToFinal() { 884 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 885 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 886 } 887 } 888 889 @Override 890 public void computeScroll() { 891 super.computeScroll(); 892 if (mSyncWallpaperOffsetWithScroll) { 893 syncWallpaperOffsetWithScroll(); 894 } 895 } 896 897 void showOutlines() { 898 if (!isSmall() && !mIsSwitchingState) { 899 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 900 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 901 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 902 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 903 mChildrenOutlineFadeInAnimation.start(); 904 } 905 } 906 907 void hideOutlines() { 908 if (!isSmall() && !mIsSwitchingState) { 909 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 910 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 911 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 912 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 913 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 914 mChildrenOutlineFadeOutAnimation.start(); 915 } 916 } 917 918 public void showOutlinesTemporarily() { 919 if (!mIsPageMoving && !isTouchActive()) { 920 snapToPage(mCurrentPage); 921 } 922 } 923 924 public void setChildrenOutlineAlpha(float alpha) { 925 mChildrenOutlineAlpha = alpha; 926 for (int i = 0; i < getChildCount(); i++) { 927 CellLayout cl = (CellLayout) getChildAt(i); 928 cl.setBackgroundAlpha(alpha); 929 } 930 } 931 932 public float getChildrenOutlineAlpha() { 933 return mChildrenOutlineAlpha; 934 } 935 936 void disableBackground() { 937 mDrawBackground = false; 938 } 939 void enableBackground() { 940 mDrawBackground = true; 941 } 942 943 private void showBackgroundGradientForAllApps() { 944 showBackgroundGradient(); 945 } 946 947 private void showBackgroundGradient() { 948 if (mBackground == null) return; 949 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 950 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 951 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 952 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 953 public void onAnimationUpdate(ValueAnimator animation) { 954 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 955 } 956 }); 957 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 958 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 959 mBackgroundFadeInAnimation.start(); 960 } 961 962 private void hideBackgroundGradient(float finalAlpha) { 963 if (mBackground == null) return; 964 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 965 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 966 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), finalAlpha); 967 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 968 public void onAnimationUpdate(ValueAnimator animation) { 969 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 970 } 971 }); 972 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 973 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 974 mBackgroundFadeOutAnimation.start(); 975 } 976 977 public void setBackgroundAlpha(float alpha) { 978 if (alpha != mBackgroundAlpha) { 979 mBackgroundAlpha = alpha; 980 invalidate(); 981 } 982 } 983 984 public float getBackgroundAlpha() { 985 return mBackgroundAlpha; 986 } 987 988 /** 989 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 990 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 991 * as being larger. This method computes what offset the rotated view should be translated 992 * in order to minimize this perceived gap. 993 * @param degrees Angle of the view 994 * @param width Width of the view 995 * @param height Height of the view 996 * @return Offset to be used in a View.setTranslationX() call 997 */ 998 private float getOffsetXForRotation(float degrees, int width, int height) { 999 mMatrix.reset(); 1000 mCamera.save(); 1001 mCamera.rotateY(Math.abs(degrees)); 1002 mCamera.getMatrix(mMatrix); 1003 mCamera.restore(); 1004 1005 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1006 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1007 mTempFloat2[0] = width; 1008 mTempFloat2[1] = height; 1009 mMatrix.mapPoints(mTempFloat2); 1010 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1011 } 1012 1013 float backgroundAlphaInterpolator(float r) { 1014 float pivotA = 0.1f; 1015 float pivotB = 0.4f; 1016 if (r < pivotA) { 1017 return 0; 1018 } else if (r > pivotB) { 1019 return 1.0f; 1020 } else { 1021 return (r - pivotA)/(pivotB - pivotA); 1022 } 1023 } 1024 1025 float overScrollBackgroundAlphaInterpolator(float r) { 1026 float threshold = 0.08f; 1027 1028 if (r > mOverScrollMaxBackgroundAlpha) { 1029 mOverScrollMaxBackgroundAlpha = r; 1030 } else if (r < mOverScrollMaxBackgroundAlpha) { 1031 r = mOverScrollMaxBackgroundAlpha; 1032 } 1033 1034 return Math.min(r / threshold, 1.0f); 1035 } 1036 1037 @Override 1038 protected void screenScrolled(int screenCenter) { 1039 super.screenScrolled(screenCenter); 1040 1041 // If the screen is not xlarge, then don't rotate the CellLayouts 1042 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1043 // see unshrink(). 1044 if (!LauncherApplication.isScreenLarge()) return; 1045 1046 final int halfScreenSize = getMeasuredWidth() / 2; 1047 1048 for (int i = 0; i < getChildCount(); i++) { 1049 CellLayout cl = (CellLayout) getChildAt(i); 1050 if (cl != null) { 1051 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1052 int delta = screenCenter - (getChildOffset(i) - 1053 getRelativeChildOffset(i) + halfScreenSize); 1054 1055 float scrollProgress = delta / (totalDistance * 1.0f); 1056 scrollProgress = Math.min(scrollProgress, 1.0f); 1057 scrollProgress = Math.max(scrollProgress, -1.0f); 1058 1059 // If the current page (i) is being overscrolled, we use a different 1060 // set of rules for setting the background alpha multiplier. 1061 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1062 i == getChildCount() -1 )) { 1063 cl.setBackgroundAlphaMultiplier( 1064 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1065 mOverScrollPageIndex = i; 1066 } else if (mOverScrollPageIndex != i) { 1067 cl.setBackgroundAlphaMultiplier( 1068 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1069 } 1070 1071 float rotation = WORKSPACE_ROTATION * scrollProgress; 1072 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1073 cl.setTranslationX(translationX); 1074 1075 cl.setRotationY(rotation); 1076 } 1077 } 1078 } 1079 1080 protected void onAttachedToWindow() { 1081 super.onAttachedToWindow(); 1082 mWindowToken = getWindowToken(); 1083 computeScroll(); 1084 mDragController.setWindowToken(mWindowToken); 1085 } 1086 1087 protected void onDetachedFromWindow() { 1088 mWindowToken = null; 1089 } 1090 1091 @Override 1092 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1093 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1094 mUpdateWallpaperOffsetImmediately = true; 1095 } 1096 super.onLayout(changed, left, top, right, bottom); 1097 1098 // if shrinkToBottom() is called on initialization, it has to be deferred 1099 // until after the first call to onLayout so that it has the correct width 1100 if (mSwitchStateAfterFirstLayout) { 1101 mSwitchStateAfterFirstLayout = false; 1102 // shrink can trigger a synchronous onLayout call, so we 1103 // post this to avoid a stack overflow / tangled onLayout calls 1104 post(new Runnable() { 1105 public void run() { 1106 shrink(mStateAfterFirstLayout, false); 1107 } 1108 }); 1109 } 1110 } 1111 1112 @Override 1113 protected void onDraw(Canvas canvas) { 1114 updateWallpaperOffsets(); 1115 1116 // Draw the background gradient if necessary 1117 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1118 int alpha = (int) (mBackgroundAlpha * 255); 1119 mBackground.setAlpha(alpha); 1120 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1121 getMeasuredHeight()); 1122 mBackground.draw(canvas); 1123 } 1124 1125 super.onDraw(canvas); 1126 } 1127 1128 @Override 1129 protected void dispatchDraw(Canvas canvas) { 1130 super.dispatchDraw(canvas); 1131 1132 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1133 final int width = getWidth(); 1134 final int height = getHeight(); 1135 final int pageHeight = getChildAt(0).getHeight(); 1136 1137 // This determines the height of the glowing edge: 90% of the page height 1138 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1139 1140 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1141 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1142 1143 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1144 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1145 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1146 d.draw(canvas); 1147 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1148 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1149 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1150 d.draw(canvas); 1151 } 1152 } 1153 } 1154 1155 @Override 1156 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1157 if (!mLauncher.isAllAppsVisible()) { 1158 final Folder openFolder = getOpenFolder(); 1159 if (openFolder != null) { 1160 return openFolder.requestFocus(direction, previouslyFocusedRect); 1161 } else { 1162 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1163 } 1164 } 1165 return false; 1166 } 1167 1168 @Override 1169 public int getDescendantFocusability() { 1170 if (isSmall()) { 1171 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1172 } 1173 return super.getDescendantFocusability(); 1174 } 1175 1176 @Override 1177 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1178 if (!mLauncher.isAllAppsVisible()) { 1179 final Folder openFolder = getOpenFolder(); 1180 if (openFolder != null) { 1181 openFolder.addFocusables(views, direction); 1182 } else { 1183 super.addFocusables(views, direction, focusableMode); 1184 } 1185 } 1186 } 1187 1188 public boolean isSmall() { 1189 return mState == State.SMALL; 1190 } 1191 1192 void enableChildrenCache(int fromPage, int toPage) { 1193 if (fromPage > toPage) { 1194 final int temp = fromPage; 1195 fromPage = toPage; 1196 toPage = temp; 1197 } 1198 1199 final int screenCount = getChildCount(); 1200 1201 fromPage = Math.max(fromPage, 0); 1202 toPage = Math.min(toPage, screenCount - 1); 1203 1204 for (int i = fromPage; i <= toPage; i++) { 1205 final CellLayout layout = (CellLayout) getChildAt(i); 1206 layout.setChildrenDrawnWithCacheEnabled(true); 1207 layout.setChildrenDrawingCacheEnabled(true); 1208 } 1209 } 1210 1211 void clearChildrenCache() { 1212 final int screenCount = getChildCount(); 1213 for (int i = 0; i < screenCount; i++) { 1214 final CellLayout layout = (CellLayout) getChildAt(i); 1215 layout.setChildrenDrawnWithCacheEnabled(false); 1216 } 1217 } 1218 1219 private boolean childLayersEnabled() { 1220 boolean isSmallOrSpringloaded = 1221 isSmall() || mIsSwitchingState || mState == State.SPRING_LOADED; 1222 return isSmallOrSpringloaded || isPageMoving() || mIsDragOccuring; 1223 } 1224 1225 private void updateChildrenLayersEnabled() { 1226 boolean small = 1227 isSmall() || mIsSwitchingState || mState == State.SPRING_LOADED; 1228 boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring; 1229 boolean enableChildrenLayers = small || dragging || isPageMoving(); 1230 1231 if (enableChildrenLayers != mChildrenLayersEnabled) { 1232 mChildrenLayersEnabled = enableChildrenLayers; 1233 for (int i = 0; i < getPageCount(); i++) { 1234 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers); 1235 } 1236 } 1237 } 1238 1239 @Override 1240 protected void onWallpaperTap(MotionEvent ev) { 1241 final int[] position = mTempCell; 1242 getLocationOnScreen(position); 1243 1244 int pointerIndex = ev.getActionIndex(); 1245 position[0] += (int) ev.getX(pointerIndex); 1246 position[1] += (int) ev.getY(pointerIndex); 1247 1248 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1249 ev.getAction() == MotionEvent.ACTION_UP 1250 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1251 position[0], position[1], 0, null); 1252 } 1253 1254 private float getYScaleForScreen(int screen) { 1255 int x = Math.abs(screen - 2); 1256 1257 // TODO: This should be generalized for use with arbitrary rotation angles. 1258 switch(x) { 1259 case 0: return EXTRA_SCALE_FACTOR_0; 1260 case 1: return EXTRA_SCALE_FACTOR_1; 1261 case 2: return EXTRA_SCALE_FACTOR_2; 1262 } 1263 return 1.0f; 1264 } 1265 1266 public void shrink(State shrinkState) { 1267 shrink(shrinkState, true); 1268 } 1269 1270 // we use this to shrink the workspace for the all apps view and the customize view 1271 public void shrink(State shrinkState, boolean animated) { 1272 if (mFirstLayout) { 1273 // (mFirstLayout == "first layout has not happened yet") 1274 // if we get a call to shrink() as part of our initialization (for example, if 1275 // Launcher is started in All Apps mode) then we need to wait for a layout call 1276 // to get our width so we can layout the mini-screen views correctly 1277 mSwitchStateAfterFirstLayout = true; 1278 mStateAfterFirstLayout = shrinkState; 1279 return; 1280 } 1281 1282 // Stop any scrolling, move to the current page right away 1283 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1284 1285 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1286 if (currentPage == null) { 1287 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1288 + " mNextPage " + mNextPage); 1289 return; 1290 } 1291 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1292 currentPage.setBackgroundAlpha(0.0f); 1293 } 1294 currentPage.setBackgroundAlphaMultiplier(1.0f); 1295 1296 mState = shrinkState; 1297 updateChildrenLayersEnabled(); 1298 1299 // we intercept and reject all touch events when we're small, so be sure to reset the state 1300 mTouchState = TOUCH_STATE_REST; 1301 mActivePointerId = INVALID_POINTER; 1302 1303 final Resources res = getResources(); 1304 final int screenWidth = getWidth(); 1305 final int screenHeight = getHeight(); 1306 1307 // How much the workspace shrinks when we enter all apps or customization mode 1308 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1309 1310 // Making the assumption that all pages have the same width as the 0th 1311 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1312 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1313 1314 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1315 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1316 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1317 1318 final int screenCount = getChildCount(); 1319 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1320 1321 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1322 float y = (isPortrait ? 1323 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1324 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1325 float finalAlpha = 1.0f; 1326 float extraShrinkFactor = 1.0f; 1327 1328 // We shrink and disappear to nothing 1329 y = screenHeight - y - scaledPageHeight; 1330 finalAlpha = 0.0f; 1331 1332 int duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1333 1334 // We animate all the screens to the centered position in workspace 1335 // At the same time, the screens become greyed/dimmed 1336 1337 // newX is initialized to the left-most position of the centered screens 1338 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1339 1340 // We are going to scale about the center of the view, so we need to adjust the positions 1341 // of the views accordingly 1342 x -= (pageWidth - scaledPageWidth) / 2.0f; 1343 y -= (pageHeight - scaledPageHeight) / 2.0f; 1344 1345 if (mAnimator != null) { 1346 mAnimator.cancel(); 1347 } 1348 1349 mAnimator = new AnimatorSet(); 1350 1351 final int childCount = getChildCount(); 1352 final float[] oldXs = new float[childCount]; 1353 final float[] oldYs = new float[childCount]; 1354 final float[] oldScaleXs = new float[childCount]; 1355 final float[] oldScaleYs = new float[childCount]; 1356 final float[] oldBackgroundAlphas = new float[childCount]; 1357 final float[] oldAlphas = new float[childCount]; 1358 final float[] oldRotationYs = new float[childCount]; 1359 final float[] newXs = new float[childCount]; 1360 final float[] newYs = new float[childCount]; 1361 final float[] newScaleXs = new float[childCount]; 1362 final float[] newScaleYs = new float[childCount]; 1363 final float[] newBackgroundAlphas = new float[childCount]; 1364 final float[] newAlphas = new float[childCount]; 1365 final float[] newRotationYs = new float[childCount]; 1366 1367 for (int i = 0; i < screenCount; i++) { 1368 final CellLayout cl = (CellLayout) getChildAt(i); 1369 1370 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1371 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1372 float rotationScaleY = getYScaleForScreen(i); 1373 1374 oldAlphas[i] = cl.getAlpha(); 1375 newAlphas[i] = finalAlpha; 1376 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1377 // if the CellLayout will be visible during the animation, force building its 1378 // hardware layer immediately so we don't see a blip later in the animation 1379 cl.buildChildrenLayer(); 1380 } 1381 if (animated) { 1382 oldXs[i] = cl.getX(); 1383 oldYs[i] = cl.getY(); 1384 oldScaleXs[i] = cl.getScaleX(); 1385 oldScaleYs[i] = cl.getScaleY(); 1386 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1387 oldRotationYs[i] = cl.getRotationY(); 1388 newXs[i] = x; 1389 newYs[i] = y; 1390 newScaleXs[i] = shrinkFactor * rotationScaleX * extraShrinkFactor; 1391 newScaleYs[i] = shrinkFactor * rotationScaleY * extraShrinkFactor; 1392 newBackgroundAlphas[i] = finalAlpha; 1393 newRotationYs[i] = rotation; 1394 } else { 1395 cl.setX((int)x); 1396 cl.setY((int)y); 1397 cl.setScaleX(shrinkFactor * rotationScaleX * extraShrinkFactor); 1398 cl.setScaleY(shrinkFactor * rotationScaleY * extraShrinkFactor); 1399 cl.setBackgroundAlpha(finalAlpha); 1400 cl.setAlpha(finalAlpha); 1401 cl.setRotationY(rotation); 1402 mShrinkAnimationListener.onAnimationEnd(null); 1403 } 1404 // increment newX for the next screen 1405 x += scaledPageWidth + extraScaledSpacing; 1406 } 1407 1408 float wallpaperOffset = 0.5f; 1409 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1410 int wallpaperTravelHeight = (int) (display.getHeight() * 1411 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1412 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1413 boolean isLandscape = display.getWidth() > display.getHeight(); 1414 1415 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1416 // to/from all apps 1417 final boolean enableWallpaperEffects = 1418 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1419 if (enableWallpaperEffects) { 1420 switch (shrinkState) { 1421 // animating in 1422 case SPRING_LOADED: 1423 wallpaperOffset = 0.5f; 1424 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1425 break; 1426 case SMALL: 1427 // allapps 1428 wallpaperOffset = 0.5f - offsetFromCenter; 1429 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1430 break; 1431 } 1432 } 1433 1434 setLayoutScale(1.0f); 1435 if (animated) { 1436 if (enableWallpaperEffects) { 1437 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1438 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1439 } 1440 1441 mSyncWallpaperOffsetWithScroll = false; 1442 1443 ValueAnimator animWithInterpolator = 1444 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1445 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1446 1447 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1448 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1449 final float newHorizontalWallpaperOffset = 0.5f; 1450 final float newVerticalWallpaperOffset = wallpaperOffset; 1451 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1452 public void onAnimationUpdate(float a, float b) { 1453 if (b == 0f) { 1454 // an optimization, and required for correct behavior. 1455 return; 1456 } 1457 invalidate(); 1458 if (enableWallpaperEffects) { 1459 setHorizontalWallpaperOffset( 1460 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1461 setVerticalWallpaperOffset( 1462 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1463 } 1464 for (int i = 0; i < screenCount; i++) { 1465 final CellLayout cl = (CellLayout) getChildAt(i); 1466 cl.fastInvalidate(); 1467 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1468 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1469 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1470 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1471 cl.setFastBackgroundAlpha( 1472 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1473 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1474 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1475 } 1476 } 1477 }); 1478 mAnimator.playTogether(animWithInterpolator); 1479 mAnimator.addListener(mShrinkAnimationListener); 1480 mAnimator.start(); 1481 } else if (enableWallpaperEffects) { 1482 setVerticalWallpaperOffset(wallpaperOffset); 1483 setHorizontalWallpaperOffset(0.5f); 1484 updateWallpaperOffsetImmediately(); 1485 } 1486 setChildrenDrawnWithCacheEnabled(true); 1487 1488 showBackgroundGradientForAllApps(); 1489 } 1490 1491 /* 1492 * This interpolator emulates the rate at which the perceived scale of an object changes 1493 * as its distance from a camera increases. When this interpolator is applied to a scale 1494 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1495 * from the camera. 1496 */ 1497 static class ZInterpolator implements TimeInterpolator { 1498 private float focalLength; 1499 1500 public ZInterpolator(float foc) { 1501 focalLength = foc; 1502 } 1503 1504 public float getInterpolation(float input) { 1505 return (1.0f - focalLength / (focalLength + input)) / 1506 (1.0f - focalLength / (focalLength + 1.0f)); 1507 } 1508 } 1509 1510 /* 1511 * The exact reverse of ZInterpolator. 1512 */ 1513 static class InverseZInterpolator implements TimeInterpolator { 1514 private ZInterpolator zInterpolator; 1515 public InverseZInterpolator(float foc) { 1516 zInterpolator = new ZInterpolator(foc); 1517 } 1518 public float getInterpolation(float input) { 1519 return 1 - zInterpolator.getInterpolation(1 - input); 1520 } 1521 } 1522 1523 /* 1524 * ZInterpolator compounded with an ease-out. 1525 */ 1526 static class ZoomOutInterpolator implements TimeInterpolator { 1527 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1528 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1529 1530 public float getInterpolation(float input) { 1531 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1532 } 1533 } 1534 1535 /* 1536 * InvereZInterpolator compounded with an ease-out. 1537 */ 1538 static class ZoomInInterpolator implements TimeInterpolator { 1539 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1540 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1541 1542 public float getInterpolation(float input) { 1543 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1544 } 1545 } 1546 1547 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1548 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1549 1550 /* 1551 * 1552 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1553 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1554 * 1555 * These methods mark the appropriate pages as accepting drops (which alters their visual 1556 * appearance). 1557 * 1558 */ 1559 public void onDragStartedWithItem(View v) { 1560 final Canvas canvas = new Canvas(); 1561 1562 // We need to add extra padding to the bitmap to make room for the glow effect 1563 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1564 1565 // The outline is used to visualize where the item will land if dropped 1566 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1567 } 1568 1569 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1570 final Canvas canvas = new Canvas(); 1571 1572 // We need to add extra padding to the bitmap to make room for the glow effect 1573 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1574 1575 CellLayout cl = (CellLayout) getChildAt(0); 1576 1577 int[] size = cl.cellSpansToSize(spanX, spanY); 1578 1579 // The outline is used to visualize where the item will land if dropped 1580 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1581 } 1582 1583 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1584 // never dragged over 1585 public void onDragStopped(boolean success) { 1586 // In the success case, DragController has already called onDragExit() 1587 if (!success) { 1588 doDragExit(null); 1589 } 1590 } 1591 1592 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1593 public void unshrink(CellLayout clThatWasClicked) { 1594 unshrink(clThatWasClicked, false); 1595 } 1596 1597 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1598 int newCurrentPage = indexOfChild(clThatWasClicked); 1599 if (isSmall()) { 1600 if (springLoaded) { 1601 setLayoutScale(mSpringLoadedShrinkFactor); 1602 } 1603 scrollToNewPageWithoutMovingPages(newCurrentPage); 1604 unshrink(true, springLoaded); 1605 } 1606 } 1607 1608 1609 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1610 unshrink(clThatWasClicked, true); 1611 } 1612 1613 public void exitSpringLoadedDragMode(State shrinkState) { 1614 shrink(shrinkState); 1615 } 1616 1617 public void exitWidgetResizeMode() { 1618 DragLayer dragLayer = mLauncher.getDragLayer(); 1619 dragLayer.clearAllResizeFrames(); 1620 } 1621 1622 void unshrink(boolean animated) { 1623 unshrink(animated, false); 1624 } 1625 1626 void unshrink(boolean animated, boolean springLoaded) { 1627 if (isSmall()) { 1628 float finalScaleFactor = 1.0f; 1629 float finalBackgroundAlpha = 0.0f; 1630 if (springLoaded) { 1631 finalScaleFactor = mSpringLoadedShrinkFactor; 1632 finalBackgroundAlpha = 1.0f; 1633 } else { 1634 mState = springLoaded ? State.SPRING_LOADED : State.NORMAL; 1635 } 1636 if (mAnimator != null) { 1637 mAnimator.cancel(); 1638 } 1639 1640 mAnimator = new AnimatorSet(); 1641 final int screenCount = getChildCount(); 1642 1643 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1644 1645 final float[] oldTranslationXs = new float[getChildCount()]; 1646 final float[] oldTranslationYs = new float[getChildCount()]; 1647 final float[] oldScaleXs = new float[getChildCount()]; 1648 final float[] oldScaleYs = new float[getChildCount()]; 1649 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1650 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1651 final float[] oldAlphas = new float[getChildCount()]; 1652 final float[] oldRotationYs = new float[getChildCount()]; 1653 final float[] newTranslationXs = new float[getChildCount()]; 1654 final float[] newTranslationYs = new float[getChildCount()]; 1655 final float[] newScaleXs = new float[getChildCount()]; 1656 final float[] newScaleYs = new float[getChildCount()]; 1657 final float[] newBackgroundAlphas = new float[getChildCount()]; 1658 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1659 final float[] newAlphas = new float[getChildCount()]; 1660 final float[] newRotationYs = new float[getChildCount()]; 1661 1662 for (int i = 0; i < screenCount; i++) { 1663 final CellLayout cl = (CellLayout)getChildAt(i); 1664 float finalAlphaValue = 0f; 1665 float rotation = 0f; 1666 if (LauncherApplication.isScreenLarge()) { 1667 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1668 1669 if (i < mCurrentPage) { 1670 rotation = WORKSPACE_ROTATION; 1671 } else if (i > mCurrentPage) { 1672 rotation = -WORKSPACE_ROTATION; 1673 } 1674 } else { 1675 // Don't hide the side panes on the phone if we don't also update the side pages 1676 // alpha. See screenScrolled(). 1677 finalAlphaValue = 1f; 1678 } 1679 float finalAlphaMultiplierValue = 1f; 1680 1681 float translation = 0f; 1682 1683 // If the screen is not xlarge, then don't rotate the CellLayouts 1684 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1685 // pages. see unshrink(). 1686 if (LauncherApplication.isScreenLarge()) { 1687 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1688 } 1689 1690 oldAlphas[i] = cl.getAlpha(); 1691 newAlphas[i] = finalAlphaValue; 1692 if (animated) { 1693 oldTranslationXs[i] = cl.getTranslationX(); 1694 oldTranslationYs[i] = cl.getTranslationY(); 1695 oldScaleXs[i] = cl.getScaleX(); 1696 oldScaleYs[i] = cl.getScaleY(); 1697 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1698 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1699 oldRotationYs[i] = cl.getRotationY(); 1700 1701 newTranslationXs[i] = translation; 1702 newTranslationYs[i] = 0f; 1703 newScaleXs[i] = finalScaleFactor; 1704 newScaleYs[i] = finalScaleFactor; 1705 newBackgroundAlphas[i] = finalBackgroundAlpha; 1706 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1707 newRotationYs[i] = rotation; 1708 } else { 1709 cl.setTranslationX(translation); 1710 cl.setTranslationY(0.0f); 1711 cl.setScaleX(finalScaleFactor); 1712 cl.setScaleY(finalScaleFactor); 1713 cl.setBackgroundAlpha(0.0f); 1714 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1715 cl.setAlpha(finalAlphaValue); 1716 cl.setRotationY(rotation); 1717 mUnshrinkAnimationListener.onAnimationEnd(null); 1718 } 1719 } 1720 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1721 boolean isLandscape = display.getWidth() > display.getHeight(); 1722 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1723 // to/from all apps 1724 final boolean enableWallpaperEffects = 1725 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1726 if (enableWallpaperEffects) { 1727 switch (mState) { 1728 // animating out 1729 case SPRING_LOADED: 1730 if (animated) { 1731 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1732 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1733 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1734 } 1735 break; 1736 case SMALL: 1737 // all apps 1738 if (animated) { 1739 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1740 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1741 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1742 } 1743 break; 1744 } 1745 } 1746 if (animated) { 1747 ValueAnimator animWithInterpolator = 1748 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1749 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1750 1751 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 1752 getHorizontalWallpaperOffset() : 0; 1753 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 1754 getVerticalWallpaperOffset() : 0; 1755 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 1756 wallpaperOffsetForCurrentScroll() : 0; 1757 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 1758 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1759 public void onAnimationUpdate(float a, float b) { 1760 if (b == 0f) { 1761 // an optimization, but not required 1762 return; 1763 } 1764 invalidate(); 1765 if (enableWallpaperEffects) { 1766 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 1767 + b * newHorizontalWallpaperOffset); 1768 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 1769 + b * newVerticalWallpaperOffset); 1770 } 1771 for (int i = 0; i < screenCount; i++) { 1772 final CellLayout cl = (CellLayout) getChildAt(i); 1773 cl.fastInvalidate(); 1774 cl.setFastTranslationX( 1775 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1776 cl.setFastTranslationY( 1777 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1778 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1779 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1780 cl.setFastBackgroundAlpha( 1781 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1782 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1783 b * newBackgroundAlphaMultipliers[i]); 1784 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1785 } 1786 } 1787 }); 1788 1789 ValueAnimator rotationAnim = 1790 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1791 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1792 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1793 public void onAnimationUpdate(float a, float b) { 1794 // don't invalidate workspace because we did it above 1795 if (b == 0f) { 1796 // an optimization, but not required 1797 return; 1798 } 1799 for (int i = 0; i < screenCount; i++) { 1800 final CellLayout cl = (CellLayout) getChildAt(i); 1801 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1802 } 1803 } 1804 }); 1805 1806 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1807 // If we call this when we're not animated, onAnimationEnd is never called on 1808 // the listener; make sure we only use the listener when we're actually animating 1809 mAnimator.addListener(mUnshrinkAnimationListener); 1810 mAnimator.start(); 1811 } else { 1812 if (enableWallpaperEffects) { 1813 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1814 setVerticalWallpaperOffset(0.5f); 1815 updateWallpaperOffsetImmediately(); 1816 } 1817 } 1818 } 1819 1820 hideBackgroundGradient(springLoaded ? getResources().getInteger( 1821 R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f : 0f); 1822 } 1823 1824 /** 1825 * Draw the View v into the given Canvas. 1826 * 1827 * @param v the view to draw 1828 * @param destCanvas the canvas to draw on 1829 * @param padding the horizontal and vertical padding to use when drawing 1830 */ 1831 private void drawDragView(View v, Canvas destCanvas, int padding) { 1832 final Rect clipRect = mTempRect; 1833 v.getDrawingRect(clipRect); 1834 1835 // For a TextView, adjust the clip rect so that we don't include the text label 1836 if (v instanceof BubbleTextView) { 1837 final BubbleTextView tv = (BubbleTextView) v; 1838 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1839 tv.getLayout().getLineTop(0); 1840 } else if (v instanceof TextView) { 1841 final TextView tv = (TextView) v; 1842 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1843 tv.getLayout().getLineTop(0); 1844 } else if (v instanceof FolderIcon) { 1845 clipRect.bottom = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1846 } 1847 1848 // Draw the View into the bitmap. 1849 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1850 // they set scrollX and scrollY to large values to achieve centered text 1851 1852 destCanvas.save(); 1853 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1854 destCanvas.clipRect(clipRect, Op.REPLACE); 1855 v.draw(destCanvas); 1856 destCanvas.restore(); 1857 } 1858 1859 /** 1860 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1861 * Responsibility for the bitmap is transferred to the caller. 1862 */ 1863 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1864 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1865 final Bitmap b = Bitmap.createBitmap( 1866 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1867 1868 canvas.setBitmap(b); 1869 drawDragView(v, canvas, padding); 1870 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1871 return b; 1872 } 1873 1874 /** 1875 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1876 * Responsibility for the bitmap is transferred to the caller. 1877 */ 1878 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1879 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1880 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1881 canvas.setBitmap(b); 1882 1883 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1884 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1885 (h - padding) / (float) orig.getHeight()); 1886 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1887 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1888 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1889 1890 // center the image 1891 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1892 1893 Paint p = new Paint(); 1894 p.setFilterBitmap(true); 1895 canvas.drawBitmap(orig, src, dst, p); 1896 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1897 1898 return b; 1899 } 1900 1901 /** 1902 * Creates a drag outline to represent a drop (that we don't have the actual information for 1903 * yet). May be changed in the future to alter the drop outline slightly depending on the 1904 * clip description mime data. 1905 */ 1906 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1907 Resources r = getResources(); 1908 final int outlineColor = r.getColor(R.color.drag_outline_color); 1909 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1910 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1911 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1912 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1913 final Bitmap b = Bitmap.createBitmap( 1914 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1915 1916 canvas.setBitmap(b); 1917 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1918 rectRadius, rectRadius, mExternalDragOutlinePaint); 1919 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1920 return b; 1921 } 1922 1923 /** 1924 * Returns a new bitmap to show when the given View is being dragged around. 1925 * Responsibility for the bitmap is transferred to the caller. 1926 */ 1927 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1928 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1929 final Bitmap b = Bitmap.createBitmap( 1930 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1931 1932 canvas.setBitmap(b); 1933 canvas.drawBitmap(mDragOutline, 0, 0, null); 1934 drawDragView(v, canvas, padding); 1935 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1936 1937 return b; 1938 } 1939 1940 void startDrag(CellLayout.CellInfo cellInfo) { 1941 View child = cellInfo.cell; 1942 1943 // Make sure the drag was started by a long press as opposed to a long click. 1944 if (!child.isInTouchMode()) { 1945 return; 1946 } 1947 1948 mDragInfo = cellInfo; 1949 1950 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 1951 current.onDragChild(child); 1952 1953 child.clearFocus(); 1954 child.setPressed(false); 1955 1956 final Canvas canvas = new Canvas(); 1957 1958 // We need to add extra padding to the bitmap to make room for the glow effect 1959 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1960 1961 // The outline is used to visualize where the item will land if dropped 1962 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1963 1964 // The drag bitmap follows the touch point around on the screen 1965 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1966 1967 final int bmpWidth = b.getWidth(); 1968 final int bmpHeight = b.getHeight(); 1969 1970 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1971 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1972 final int dragLayerY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1973 1974 Rect dragRect = null; 1975 if (child instanceof BubbleTextView) { 1976 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 1977 int top = child.getPaddingTop(); 1978 int left = (bmpWidth - iconSize) / 2; 1979 int right = left + iconSize; 1980 int bottom = top + iconSize; 1981 dragRect = new Rect(left, top, right, bottom); 1982 } else if (child instanceof FolderIcon) { 1983 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1984 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 1985 } 1986 1987 mLauncher.lockScreenOrientation(); 1988 mDragController.startDrag(b, dragLayerX, dragLayerY, this, child.getTag(), 1989 DragController.DRAG_ACTION_MOVE, dragRect); 1990 b.recycle(); 1991 } 1992 1993 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1994 boolean insertAtFirst, int intersectX, int intersectY) { 1995 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1996 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1997 1998 final int[] cellXY = new int[2]; 1999 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2000 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2001 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2002 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2003 cellXY[0], cellXY[1]); 2004 } 2005 2006 /** 2007 * {@inheritDoc} 2008 */ 2009 public boolean acceptDrop(DragObject d) { 2010 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2011 if (d.dragSource != this) { 2012 // Don't accept the drop if we're not over a screen at time of drop 2013 if (mDragTargetLayout == null) { 2014 return false; 2015 } 2016 2017 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2018 d.dragView, mDragViewVisualCenter); 2019 2020 int spanX = 1; 2021 int spanY = 1; 2022 View ignoreView = null; 2023 if (mDragInfo != null) { 2024 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2025 spanX = dragCellInfo.spanX; 2026 spanY = dragCellInfo.spanY; 2027 ignoreView = dragCellInfo.cell; 2028 } else { 2029 final ItemInfo dragInfo = (ItemInfo) d.dragInfo; 2030 spanX = dragInfo.spanX; 2031 spanY = dragInfo.spanY; 2032 } 2033 2034 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2035 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2036 2037 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2038 return true; 2039 } 2040 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2041 mTargetCell)) { 2042 return true; 2043 } 2044 2045 2046 // Don't accept the drop if there's no room for the item 2047 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2048 mLauncher.showOutOfSpaceMessage(); 2049 return false; 2050 } 2051 } 2052 return true; 2053 } 2054 2055 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2056 boolean considerTimeout) { 2057 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2058 2059 boolean hasntMoved = mDragInfo != null 2060 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2061 2062 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2063 return false; 2064 } 2065 2066 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2067 boolean willBecomeShortcut = 2068 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2069 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2070 2071 return (aboveShortcut && willBecomeShortcut); 2072 } 2073 2074 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2075 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2076 if (dropOverView instanceof FolderIcon) { 2077 FolderIcon fi = (FolderIcon) dropOverView; 2078 if (fi.acceptDrop(dragInfo)) { 2079 return true; 2080 } 2081 } 2082 return false; 2083 } 2084 2085 boolean createUserFolderIfNecessary(View newView, CellLayout target, 2086 int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) { 2087 View v = target.getChildAt(targetCell[0], targetCell[1]); 2088 boolean hasntMoved = mDragInfo != null 2089 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2090 2091 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2092 mCreateUserFolderOnDrop = false; 2093 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2094 2095 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2096 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2097 2098 if (aboveShortcut && willBecomeShortcut) { 2099 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2100 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2101 // if the drag started here, we need to remove it from the workspace 2102 if (!external) { 2103 int fromScreen = mDragInfo.screen; 2104 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2105 sourceLayout.removeView(newView); 2106 } 2107 2108 Rect folderLocation = new Rect(); 2109 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2110 target.removeView(v); 2111 2112 FolderIcon fi = mLauncher.addFolder(screen, targetCell[0], targetCell[1]); 2113 destInfo.cellX = -1; 2114 destInfo.cellY = -1; 2115 sourceInfo.cellX = -1; 2116 sourceInfo.cellY = -1; 2117 2118 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, 2119 postAnimationRunnable); 2120 return true; 2121 } 2122 return false; 2123 } 2124 2125 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2126 DragObject d, boolean external) { 2127 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2128 if (dropOverView instanceof FolderIcon) { 2129 FolderIcon fi = (FolderIcon) dropOverView; 2130 if (fi.acceptDrop(d.dragInfo)) { 2131 fi.onDrop(d); 2132 2133 // if the drag started here, we need to remove it from the workspace 2134 if (!external) { 2135 int fromScreen = mDragInfo.screen; 2136 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2137 sourceLayout.removeView(newView); 2138 } 2139 return true; 2140 } 2141 } 2142 return false; 2143 } 2144 2145 public void onDrop(DragObject d) { 2146 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2147 mDragViewVisualCenter); 2148 2149 // We want the point to be mapped to the dragTarget. 2150 if (mDragTargetLayout != null) { 2151 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2152 } 2153 2154 // When you are in customization mode and drag to a particular screen, make that the 2155 // new current/default screen, so any subsequent taps add items to that screen 2156 if (!mLauncher.isAllAppsVisible()) { 2157 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2158 if (mCurrentPage != dragTargetIndex && (isSmall() || mIsSwitchingState)) { 2159 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2160 } 2161 } 2162 CellLayout dropTargetLayout = mDragTargetLayout; 2163 2164 if (d.dragSource != this) { 2165 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2166 (int) mDragViewVisualCenter[1] }; 2167 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2168 } else if (mDragInfo != null) { 2169 final View cell = mDragInfo.cell; 2170 2171 if (dropTargetLayout != null) { 2172 // Move internally 2173 final int screen = (mTargetCell[0] < 0) ? 2174 mDragInfo.screen : indexOfChild(dropTargetLayout); 2175 2176 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2177 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2178 // First we find the cell nearest to point at which the item is 2179 // dropped, without any consideration to whether there is an item there. 2180 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2181 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2182 // If the item being dropped is a shortcut and the nearest drop 2183 // cell also contains a shortcut, then create a folder with the two shortcuts. 2184 boolean dropInscrollArea = mCurrentPage != screen; 2185 2186 if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout, 2187 mTargetCell, false, d.dragView, null)) { 2188 return; 2189 } 2190 2191 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2192 return; 2193 } 2194 2195 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2196 // we need to find the nearest cell location that is vacant 2197 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2198 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2199 dropTargetLayout, mTargetCell); 2200 2201 if (dropInscrollArea && mState != State.SPRING_LOADED) { 2202 snapToPage(screen); 2203 } 2204 2205 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2206 if (screen != mDragInfo.screen) { 2207 // Reparent the view 2208 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2209 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], mDragInfo.spanX, 2210 mDragInfo.spanY); 2211 } 2212 2213 2214 // update the item's position after drop 2215 final ItemInfo info = (ItemInfo) cell.getTag(); 2216 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2217 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2218 lp.cellX = mTargetCell[0]; 2219 lp.cellY = mTargetCell[1]; 2220 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2221 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2222 2223 if (cell instanceof LauncherAppWidgetHostView) { 2224 final CellLayout cellLayout = dropTargetLayout; 2225 // We post this call so that the widget has a chance to be placed 2226 // in its final location 2227 2228 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2229 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2230 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2231 final Runnable resizeRunnable = new Runnable() { 2232 public void run() { 2233 DragLayer dragLayer = mLauncher.getDragLayer(); 2234 dragLayer.addResizeFrame(info, hostView, cellLayout); 2235 } 2236 }; 2237 post(new Runnable() { 2238 public void run() { 2239 if (!isPageMoving()) { 2240 resizeRunnable.run(); 2241 } else { 2242 mDelayedResizeRunnable = resizeRunnable; 2243 } 2244 } 2245 }); 2246 } 2247 } 2248 2249 LauncherModel.moveItemInDatabase(mLauncher, info, 2250 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2251 lp.cellX, lp.cellY); 2252 } 2253 } 2254 2255 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2256 2257 // Prepare it to be animated into its new position 2258 // This must be called after the view has been re-parented 2259 final Runnable disableHardwareLayersRunnable = new Runnable() { 2260 @Override 2261 public void run() { 2262 mAnimatingViewIntoPlace = false; 2263 updateChildrenLayersEnabled(); 2264 } 2265 }; 2266 mAnimatingViewIntoPlace = true; 2267 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, 2268 disableHardwareLayersRunnable); 2269 parent.onDropChild(cell); 2270 } 2271 } 2272 2273 public void getViewLocationRelativeToSelf(View v, int[] location) { 2274 getLocationInWindow(location); 2275 int x = location[0]; 2276 int y = location[1]; 2277 2278 v.getLocationInWindow(location); 2279 int vX = location[0]; 2280 int vY = location[1]; 2281 2282 location[0] = vX - x; 2283 location[1] = vY - y; 2284 } 2285 2286 public void onDragEnter(DragObject d) { 2287 if (mDragTargetLayout != null) { 2288 mDragTargetLayout.setIsDragOverlapping(false); 2289 mDragTargetLayout.onDragExit(); 2290 } 2291 mDragTargetLayout = getCurrentDropLayout(); 2292 mDragTargetLayout.setIsDragOverlapping(true); 2293 mDragTargetLayout.onDragEnter(); 2294 2295 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2296 // don't need to show the outlines 2297 if (LauncherApplication.isScreenLarge()) { 2298 showOutlines(); 2299 } 2300 } 2301 2302 private void doDragExit(DragObject d) { 2303 // Clean up folders 2304 cleanupFolderCreation(d); 2305 2306 // Reset the scroll area and previous drag target 2307 onResetScrollArea(); 2308 2309 if (mDragTargetLayout != null) { 2310 mDragTargetLayout.setIsDragOverlapping(false); 2311 mDragTargetLayout.onDragExit(); 2312 } 2313 mLastDragOverView = null; 2314 2315 if (!mIsPageMoving) { 2316 hideOutlines(); 2317 } 2318 } 2319 2320 public void onDragExit(DragObject d) { 2321 doDragExit(d); 2322 } 2323 2324 public DropTarget getDropTargetDelegate(DragObject d) { 2325 return null; 2326 } 2327 2328 /** 2329 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2330 * in the returned structure related to the widgets that match the drop (or a null list if it is 2331 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2332 */ 2333 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2334 final LauncherModel model = mLauncher.getModel(); 2335 final ClipDescription desc = event.getClipDescription(); 2336 final int mimeTypeCount = desc.getMimeTypeCount(); 2337 for (int i = 0; i < mimeTypeCount; ++i) { 2338 final String mimeType = desc.getMimeType(i); 2339 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2340 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2341 } else { 2342 final List<WidgetMimeTypeHandlerData> widgets = 2343 model.resolveWidgetsForMimeType(mContext, mimeType); 2344 if (widgets.size() > 0) { 2345 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2346 } 2347 } 2348 } 2349 return null; 2350 } 2351 2352 /** 2353 * Global drag and drop handler 2354 */ 2355 @Override 2356 public boolean onDragEvent(DragEvent event) { 2357 final ClipDescription desc = event.getClipDescription(); 2358 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2359 final int[] pos = new int[2]; 2360 layout.getLocationOnScreen(pos); 2361 // We need to offset the drag coordinates to layout coordinate space 2362 final int x = (int) event.getX() - pos[0]; 2363 final int y = (int) event.getY() - pos[1]; 2364 2365 switch (event.getAction()) { 2366 case DragEvent.ACTION_DRAG_STARTED: { 2367 // Validate this drag 2368 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2369 if (test != null) { 2370 boolean isShortcut = (test.second == null); 2371 if (isShortcut) { 2372 // Check if we have enough space on this screen to add a new shortcut 2373 if (!layout.findCellForSpan(pos, 1, 1)) { 2374 mLauncher.showOutOfSpaceMessage(); 2375 return false; 2376 } 2377 } 2378 } else { 2379 // Show error message if we couldn't accept any of the items 2380 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2381 Toast.LENGTH_SHORT).show(); 2382 return false; 2383 } 2384 2385 // Create the drag outline 2386 // We need to add extra padding to the bitmap to make room for the glow effect 2387 final Canvas canvas = new Canvas(); 2388 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2389 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2390 2391 // Show the current page outlines to indicate that we can accept this drop 2392 showOutlines(); 2393 layout.setIsDragOccuring(true); 2394 layout.onDragEnter(); 2395 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2396 2397 return true; 2398 } 2399 case DragEvent.ACTION_DRAG_LOCATION: 2400 // Visualize the drop location 2401 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2402 return true; 2403 case DragEvent.ACTION_DROP: { 2404 // Try and add any shortcuts 2405 final LauncherModel model = mLauncher.getModel(); 2406 final ClipData data = event.getClipData(); 2407 2408 // We assume that the mime types are ordered in descending importance of 2409 // representation. So we enumerate the list of mime types and alert the 2410 // user if any widgets can handle the drop. Only the most preferred 2411 // representation will be handled. 2412 pos[0] = x; 2413 pos[1] = y; 2414 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2415 if (test != null) { 2416 final int index = test.first; 2417 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2418 final boolean isShortcut = (widgets == null); 2419 final String mimeType = desc.getMimeType(index); 2420 if (isShortcut) { 2421 final Intent intent = data.getItemAt(index).getIntent(); 2422 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2423 onDropExternal(new int[] { x, y }, info, layout, false); 2424 } else { 2425 if (widgets.size() == 1) { 2426 // If there is only one item, then go ahead and add and configure 2427 // that widget 2428 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2429 final PendingAddWidgetInfo createInfo = 2430 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2431 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2432 } else { 2433 // Show the widget picker dialog if there is more than one widget 2434 // that can handle this data type 2435 final InstallWidgetReceiver.WidgetListAdapter adapter = 2436 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2437 data, widgets, layout, mCurrentPage, pos); 2438 final AlertDialog.Builder builder = 2439 new AlertDialog.Builder(mContext); 2440 builder.setAdapter(adapter, adapter); 2441 builder.setCancelable(true); 2442 builder.setTitle(mContext.getString( 2443 R.string.external_drop_widget_pick_title)); 2444 builder.setIcon(R.drawable.ic_no_applications); 2445 builder.show(); 2446 } 2447 } 2448 } 2449 return true; 2450 } 2451 case DragEvent.ACTION_DRAG_ENDED: 2452 // Hide the page outlines after the drop 2453 layout.setIsDragOccuring(false); 2454 layout.onDragExit(); 2455 hideOutlines(); 2456 return true; 2457 } 2458 return super.onDragEvent(event); 2459 } 2460 2461 /* 2462 * 2463 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2464 * coordinate space. The argument xy is modified with the return result. 2465 * 2466 */ 2467 void mapPointFromSelfToChild(View v, float[] xy) { 2468 mapPointFromSelfToChild(v, xy, null); 2469 } 2470 2471 /* 2472 * 2473 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2474 * coordinate space. The argument xy is modified with the return result. 2475 * 2476 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2477 * computing it itself; we use this to avoid redundant matrix inversions in 2478 * findMatchingPageForDragOver 2479 * 2480 */ 2481 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2482 if (cachedInverseMatrix == null) { 2483 v.getMatrix().invert(mTempInverseMatrix); 2484 cachedInverseMatrix = mTempInverseMatrix; 2485 } 2486 xy[0] = xy[0] + mScrollX - v.getLeft(); 2487 xy[1] = xy[1] + mScrollY - v.getTop(); 2488 cachedInverseMatrix.mapPoints(xy); 2489 } 2490 2491 /* 2492 * 2493 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2494 * the parent View's coordinate space. The argument xy is modified with the return result. 2495 * 2496 */ 2497 void mapPointFromChildToSelf(View v, float[] xy) { 2498 v.getMatrix().mapPoints(xy); 2499 xy[0] -= (mScrollX - v.getLeft()); 2500 xy[1] -= (mScrollY - v.getTop()); 2501 } 2502 2503 static private float squaredDistance(float[] point1, float[] point2) { 2504 float distanceX = point1[0] - point2[0]; 2505 float distanceY = point2[1] - point2[1]; 2506 return distanceX * distanceX + distanceY * distanceY; 2507 } 2508 2509 /* 2510 * 2511 * Returns true if the passed CellLayout cl overlaps with dragView 2512 * 2513 */ 2514 boolean overlaps(CellLayout cl, DragView dragView, 2515 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2516 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2517 final float[] draggedItemTopLeft = mTempDragCoordinates; 2518 draggedItemTopLeft[0] = dragViewX; 2519 draggedItemTopLeft[1] = dragViewY; 2520 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2521 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2522 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2523 2524 // Transform the dragged item's top left coordinates 2525 // to the CellLayout's local coordinates 2526 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2527 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2528 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2529 2530 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2531 // Transform the dragged item's bottom right coordinates 2532 // to the CellLayout's local coordinates 2533 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2534 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2535 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2536 2537 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2538 float overlap = (overlapRegionRight - overlapRegionLeft) * 2539 (overlapRegionBottom - overlapRegionTop); 2540 if (overlap > 0) { 2541 return true; 2542 } 2543 } 2544 } 2545 return false; 2546 } 2547 2548 /* 2549 * 2550 * This method returns the CellLayout that is currently being dragged to. In order to drag 2551 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2552 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2553 * 2554 * Return null if no CellLayout is currently being dragged over 2555 * 2556 */ 2557 private CellLayout findMatchingPageForDragOver( 2558 DragView dragView, int originX, int originY, int offsetX, int offsetY, boolean exact) { 2559 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2560 // with the item being dragged and then choose the one that's closest to the touch point 2561 final int screenCount = getChildCount(); 2562 CellLayout bestMatchingScreen = null; 2563 float smallestDistSoFar = Float.MAX_VALUE; 2564 2565 for (int i = 0; i < screenCount; i++) { 2566 CellLayout cl = (CellLayout)getChildAt(i); 2567 2568 final float[] touchXy = mTempTouchCoordinates; 2569 touchXy[0] = originX + offsetX; 2570 touchXy[1] = originY + offsetY; 2571 2572 // Transform the touch coordinates to the CellLayout's local coordinates 2573 // If the touch point is within the bounds of the cell layout, we can return immediately 2574 cl.getMatrix().invert(mTempInverseMatrix); 2575 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2576 2577 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2578 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2579 return cl; 2580 } 2581 2582 if (!exact && overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2583 // Get the center of the cell layout in screen coordinates 2584 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2585 cellLayoutCenter[0] = cl.getWidth()/2; 2586 cellLayoutCenter[1] = cl.getHeight()/2; 2587 mapPointFromChildToSelf(cl, cellLayoutCenter); 2588 2589 touchXy[0] = originX + offsetX; 2590 touchXy[1] = originY + offsetY; 2591 2592 // Calculate the distance between the center of the CellLayout 2593 // and the touch point 2594 float dist = squaredDistance(touchXy, cellLayoutCenter); 2595 2596 if (dist < smallestDistSoFar) { 2597 smallestDistSoFar = dist; 2598 bestMatchingScreen = cl; 2599 } 2600 } 2601 } 2602 return bestMatchingScreen; 2603 } 2604 2605 // This is used to compute the visual center of the dragView. This point is then 2606 // used to visualize drop locations and determine where to drop an item. The idea is that 2607 // the visual center represents the user's interpretation of where the item is, and hence 2608 // is the appropriate point to use when determining drop location. 2609 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2610 DragView dragView, float[] recycle) { 2611 float res[]; 2612 if (recycle == null) { 2613 res = new float[2]; 2614 } else { 2615 res = recycle; 2616 } 2617 2618 // First off, the drag view has been shifted in a way that is not represented in the 2619 // x and y values or the x/yOffsets. Here we account for that shift. 2620 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2621 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2622 2623 // These represent the visual top and left of drag view if a dragRect was provided. 2624 // If a dragRect was not provided, then they correspond to the actual view left and 2625 // top, as the dragRect is in that case taken to be the entire dragView. 2626 // R.dimen.dragViewOffsetY. 2627 int left = x - xOffset; 2628 int top = y - yOffset; 2629 2630 // In order to find the visual center, we shift by half the dragRect 2631 res[0] = left + dragView.getDragRegion().width() / 2; 2632 res[1] = top + dragView.getDragRegion().height() / 2; 2633 2634 return res; 2635 } 2636 2637 public void onDragOver(DragObject d) { 2638 // Skip drag over events while we are dragging over side pages 2639 if (mInScrollArea) return; 2640 if (mIsSwitchingState) return; 2641 2642 CellLayout layout; 2643 ItemInfo item = (ItemInfo) d.dragInfo; 2644 2645 // Ensure that we have proper spans for the item that we are dropping 2646 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2647 2648 // Identify whether we have dragged over a side page 2649 if (isSmall()) { 2650 int left = d.x - d.xOffset; 2651 int top = d.y - d.yOffset; 2652 layout = findMatchingPageForDragOver(d.dragView, left, top, d.xOffset, d.yOffset, true); 2653 if (layout != mDragTargetLayout) { 2654 // Cancel all intermediate folder states 2655 cleanupFolderCreation(d); 2656 2657 if (mDragTargetLayout != null) { 2658 mDragTargetLayout.setIsDragOverlapping(false); 2659 mDragTargetLayout.onDragExit(); 2660 } 2661 mDragTargetLayout = layout; 2662 if (mDragTargetLayout != null) { 2663 mDragTargetLayout.setIsDragOverlapping(true); 2664 mDragTargetLayout.onDragEnter(); 2665 } else { 2666 mLastDragOverView = null; 2667 } 2668 2669 boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); 2670 if (isInSpringLoadedMode) { 2671 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2672 } 2673 } 2674 } else { 2675 layout = getCurrentDropLayout(); 2676 if (layout != mDragTargetLayout) { 2677 if (mDragTargetLayout != null) { 2678 mDragTargetLayout.setIsDragOverlapping(false); 2679 mDragTargetLayout.onDragExit(); 2680 } 2681 mDragTargetLayout = layout; 2682 mDragTargetLayout.setIsDragOverlapping(true); 2683 mDragTargetLayout.onDragEnter(); 2684 } 2685 } 2686 2687 // Handle the drag over 2688 if (mDragTargetLayout != null) { 2689 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2690 2691 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2692 d.dragView, mDragViewVisualCenter); 2693 2694 // We want the point to be mapped to the dragTarget. 2695 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2696 ItemInfo info = (ItemInfo) d.dragInfo; 2697 2698 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2699 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2700 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2701 mTargetCell[1]); 2702 2703 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2704 mTargetCell, false); 2705 boolean isOverFolder = dragOverView instanceof FolderIcon; 2706 if (dragOverView != mLastDragOverView) { 2707 cancelFolderCreation(); 2708 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2709 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2710 } 2711 } 2712 2713 if (userFolderPending && dragOverView != mLastDragOverView) { 2714 mFolderCreationAlarm.setOnAlarmListener(new 2715 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2716 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2717 } 2718 2719 if (dragOverView != mLastDragOverView && isOverFolder) { 2720 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2721 if (mDragTargetLayout != null) { 2722 mDragTargetLayout.clearDragOutlines(); 2723 } 2724 } 2725 mLastDragOverView = dragOverView; 2726 2727 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2728 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2729 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2730 item.spanX, item.spanY); 2731 } 2732 } 2733 } 2734 2735 private void cleanupFolderCreation(DragObject d) { 2736 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2737 mDragFolderRingAnimator.animateToNaturalState(); 2738 } 2739 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2740 if (d != null) { 2741 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2742 } 2743 } 2744 mFolderCreationAlarm.cancelAlarm(); 2745 } 2746 2747 private void cancelFolderCreation() { 2748 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2749 mDragFolderRingAnimator.animateToNaturalState(); 2750 } 2751 mCreateUserFolderOnDrop = false; 2752 mFolderCreationAlarm.cancelAlarm(); 2753 } 2754 2755 class FolderCreationAlarmListener implements OnAlarmListener { 2756 CellLayout layout; 2757 int cellX; 2758 int cellY; 2759 2760 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2761 this.layout = layout; 2762 this.cellX = cellX; 2763 this.cellY = cellY; 2764 } 2765 2766 public void onAlarm(Alarm alarm) { 2767 if (mDragFolderRingAnimator == null) { 2768 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2769 } 2770 mDragFolderRingAnimator.setCell(cellX, cellY); 2771 mDragFolderRingAnimator.setCellLayout(layout); 2772 mDragFolderRingAnimator.animateToAcceptState(); 2773 layout.showFolderAccept(mDragFolderRingAnimator); 2774 layout.clearDragOutlines(); 2775 mCreateUserFolderOnDrop = true; 2776 } 2777 } 2778 2779 @Override 2780 public void getHitRect(Rect outRect) { 2781 // We want the workspace to have the whole area of the display (it will find the correct 2782 // cell layout to drop to in the existing drag/drop logic. 2783 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2784 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2785 } 2786 2787 /** 2788 * Add the item specified by dragInfo to the given layout. 2789 * @return true if successful 2790 */ 2791 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2792 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2793 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2794 return true; 2795 } 2796 mLauncher.showOutOfSpaceMessage(); 2797 return false; 2798 } 2799 2800 private void onDropExternal(int[] touchXY, Object dragInfo, 2801 CellLayout cellLayout, boolean insertAtFirst) { 2802 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2803 } 2804 2805 /** 2806 * Drop an item that didn't originate on one of the workspace screens. 2807 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2808 * come from another app altogether. 2809 * 2810 * NOTE: This can also be called when we are outside of a drag event, when we want 2811 * to add an item to one of the workspace screens. 2812 */ 2813 private void onDropExternal(final int[] touchXY, final Object dragInfo, 2814 final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2815 final Runnable exitSpringLoadedRunnable = new Runnable() { 2816 @Override 2817 public void run() { 2818 mLauncher.exitSpringLoadedDragModeDelayed(false); 2819 } 2820 }; 2821 final int screen = indexOfChild(cellLayout); 2822 if (screen != mCurrentPage && mState != State.SPRING_LOADED) { 2823 snapToPage(screen); 2824 } 2825 if (dragInfo instanceof PendingAddItemInfo) { 2826 final PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2827 mLauncher.getDragLayer().animateViewOut(d.dragView, new Runnable() { 2828 @Override 2829 public void run() { 2830 // When dragging and dropping from customization tray, we deal with creating 2831 // widgets/shortcuts/folders in a slightly different way 2832 switch (info.itemType) { 2833 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2834 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2835 break; 2836 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2837 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2838 break; 2839 default: 2840 throw new IllegalStateException("Unknown item type: " + info.itemType); 2841 } 2842 cellLayout.onDragExit(); 2843 } 2844 }); 2845 } else { 2846 // This is for other drag/drop cases, like dragging from All Apps 2847 ItemInfo info = (ItemInfo) dragInfo; 2848 View view = null; 2849 2850 switch (info.itemType) { 2851 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2852 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2853 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2854 // Came from all apps -- make a copy 2855 info = new ShortcutInfo((ApplicationInfo) info); 2856 } 2857 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2858 (ShortcutInfo) info); 2859 break; 2860 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2861 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2862 (FolderInfo) info, mIconCache); 2863 break; 2864 default: 2865 throw new IllegalStateException("Unknown item type: " + info.itemType); 2866 } 2867 2868 int spanX = 1; 2869 int spanY = 1; 2870 if (mDragInfo != null) { 2871 spanX = mDragInfo.spanX; 2872 spanY = mDragInfo.spanY; 2873 } else { 2874 spanX = info.spanX; 2875 spanY = info.spanY; 2876 } 2877 2878 // First we find the cell nearest to point at which the item is 2879 // dropped, without any consideration to whether there is an item there. 2880 if (touchXY != null) { 2881 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2882 cellLayout, mTargetCell); 2883 d.postAnimationRunnable = exitSpringLoadedRunnable; 2884 if (createUserFolderIfNecessary(view, cellLayout, mTargetCell, true, d.dragView, 2885 d.postAnimationRunnable)) { 2886 return; 2887 } 2888 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2889 return; 2890 } 2891 } 2892 2893 if (touchXY != null) { 2894 // when dragging and dropping, just find the closest free spot 2895 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2896 cellLayout, mTargetCell); 2897 } else { 2898 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2899 } 2900 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2901 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2902 cellLayout.onDropChild(view); 2903 cellLayout.animateDrop(); 2904 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2905 cellLayout.getChildrenLayout().measureChild(view); 2906 2907 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2908 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2909 lp.cellX, lp.cellY); 2910 2911 if (d.dragView != null) { 2912 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, 2913 exitSpringLoadedRunnable); 2914 } 2915 } 2916 } 2917 2918 /** 2919 * Return the current {@link CellLayout}, correctly picking the destination 2920 * screen while a scroll is in progress. 2921 */ 2922 public CellLayout getCurrentDropLayout() { 2923 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2924 } 2925 2926 /** 2927 * Return the current CellInfo describing our current drag; this method exists 2928 * so that Launcher can sync this object with the correct info when the activity is created/ 2929 * destroyed 2930 * 2931 */ 2932 public CellLayout.CellInfo getDragInfo() { 2933 return mDragInfo; 2934 } 2935 2936 /** 2937 * Calculate the nearest cell where the given object would be dropped. 2938 * 2939 * pixelX and pixelY should be in the coordinate system of layout 2940 */ 2941 private int[] findNearestVacantArea(int pixelX, int pixelY, 2942 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2943 return layout.findNearestVacantArea( 2944 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 2945 } 2946 2947 /** 2948 * Calculate the nearest cell where the given object would be dropped. 2949 * 2950 * pixelX and pixelY should be in the coordinate system of layout 2951 */ 2952 private int[] findNearestArea(int pixelX, int pixelY, 2953 int spanX, int spanY, CellLayout layout, int[] recycle) { 2954 return layout.findNearestArea( 2955 pixelX, pixelY, spanX, spanY, recycle); 2956 } 2957 2958 void setup(Launcher launcher, DragController dragController) { 2959 mLauncher = launcher; 2960 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2961 mDragController = dragController; 2962 2963 2964 // hardware layers on children are enabled on startup, but should be disabled until 2965 // needed 2966 updateChildrenLayersEnabled(); 2967 setWallpaperDimension(); 2968 } 2969 2970 /** 2971 * Called at the end of a drag which originated on the workspace. 2972 */ 2973 public void onDropCompleted(View target, DragObject d, boolean success) { 2974 if (success) { 2975 if (target != this) { 2976 if (mDragInfo != null) { 2977 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2978 cellLayout.removeView(mDragInfo.cell); 2979 if (mDragInfo.cell instanceof DropTarget) { 2980 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 2981 } 2982 } 2983 } 2984 } else if (mDragInfo != null) { 2985 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2986 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2987 // moved into DragController.cancelDrag(). 2988 doDragExit(null); 2989 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell); 2990 } 2991 mLauncher.unlockScreenOrientation(); 2992 mDragOutline = null; 2993 mDragInfo = null; 2994 } 2995 2996 @Override 2997 public void onDragViewVisible() { 2998 ((View) mDragInfo.cell).setVisibility(View.GONE); 2999 } 3000 3001 public boolean isDropEnabled() { 3002 return true; 3003 } 3004 3005 @Override 3006 protected void onRestoreInstanceState(Parcelable state) { 3007 super.onRestoreInstanceState(state); 3008 Launcher.setScreen(mCurrentPage); 3009 } 3010 3011 @Override 3012 public void scrollLeft() { 3013 if (!isSmall() && !mIsSwitchingState) { 3014 super.scrollLeft(); 3015 } 3016 Folder openFolder = getOpenFolder(); 3017 if (openFolder != null) { 3018 openFolder.completeDragExit(); 3019 } 3020 } 3021 3022 @Override 3023 public void scrollRight() { 3024 if (!isSmall() && !mIsSwitchingState) { 3025 super.scrollRight(); 3026 } 3027 Folder openFolder = getOpenFolder(); 3028 if (openFolder != null) { 3029 openFolder.completeDragExit(); 3030 } 3031 } 3032 3033 @Override 3034 public void onEnterScrollArea(int direction) { 3035 if (!isSmall() && !mIsSwitchingState) { 3036 mInScrollArea = true; 3037 3038 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3039 final CellLayout layout = (CellLayout) getChildAt(page); 3040 cancelFolderCreation(); 3041 3042 if (layout != null) { 3043 // Exit the current layout and mark the overlapping layout 3044 if (mDragTargetLayout != null) { 3045 mDragTargetLayout.setIsDragOverlapping(false); 3046 mDragTargetLayout.onDragExit(); 3047 } 3048 mDragTargetLayout = layout; 3049 mDragTargetLayout.setIsDragOverlapping(true); 3050 3051 // Workspace is responsible for drawing the edge glow on adjacent pages, 3052 // so we need to redraw the workspace when this may have changed. 3053 invalidate(); 3054 } 3055 } 3056 } 3057 3058 @Override 3059 public void onExitScrollArea() { 3060 if (mInScrollArea) { 3061 if (mDragTargetLayout != null) { 3062 // Unmark the overlapping layout and re-enter the current layout 3063 mDragTargetLayout.setIsDragOverlapping(false); 3064 mDragTargetLayout = getCurrentDropLayout(); 3065 mDragTargetLayout.onDragEnter(); 3066 3067 // Workspace is responsible for drawing the edge glow on adjacent pages, 3068 // so we need to redraw the workspace when this may have changed. 3069 invalidate(); 3070 } 3071 mInScrollArea = false; 3072 } 3073 } 3074 3075 private void onResetScrollArea() { 3076 if (mDragTargetLayout != null) { 3077 // Unmark the overlapping layout 3078 mDragTargetLayout.setIsDragOverlapping(false); 3079 3080 // Workspace is responsible for drawing the edge glow on adjacent pages, 3081 // so we need to redraw the workspace when this may have changed. 3082 invalidate(); 3083 } 3084 mInScrollArea = false; 3085 } 3086 3087 public Folder getFolderForTag(Object tag) { 3088 final int screenCount = getChildCount(); 3089 for (int screen = 0; screen < screenCount; screen++) { 3090 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3091 int count = currentScreen.getChildCount(); 3092 for (int i = 0; i < count; i++) { 3093 View child = currentScreen.getChildAt(i); 3094 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3095 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3096 Folder f = (Folder) child; 3097 if (f.getInfo() == tag && f.getInfo().opened) { 3098 return f; 3099 } 3100 } 3101 } 3102 } 3103 return null; 3104 } 3105 3106 public View getViewForTag(Object tag) { 3107 int screenCount = getChildCount(); 3108 for (int screen = 0; screen < screenCount; screen++) { 3109 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3110 int count = currentScreen.getChildCount(); 3111 for (int i = 0; i < count; i++) { 3112 View child = currentScreen.getChildAt(i); 3113 if (child.getTag() == tag) { 3114 return child; 3115 } 3116 } 3117 } 3118 return null; 3119 } 3120 3121 void clearDropTargets() { 3122 final int screenCount = getChildCount(); 3123 3124 for (int i = 0; i < screenCount; i++) { 3125 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3126 final ViewGroup layout = layoutParent.getChildrenLayout(); 3127 int childCount = layout.getChildCount(); 3128 for (int j = 0; j < childCount; j++) { 3129 View v = layout.getChildAt(j); 3130 if (v instanceof DropTarget) { 3131 mDragController.removeDropTarget((DropTarget) v); 3132 } 3133 } 3134 } 3135 } 3136 3137 void removeItems(final ArrayList<ApplicationInfo> apps) { 3138 final int screenCount = getChildCount(); 3139 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3140 3141 final HashSet<String> packageNames = new HashSet<String>(); 3142 final int appCount = apps.size(); 3143 for (int i = 0; i < appCount; i++) { 3144 packageNames.add(apps.get(i).componentName.getPackageName()); 3145 } 3146 3147 for (int i = 0; i < screenCount; i++) { 3148 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3149 final ViewGroup layout = layoutParent.getChildrenLayout(); 3150 3151 // Avoid ANRs by treating each screen separately 3152 post(new Runnable() { 3153 public void run() { 3154 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3155 childrenToRemove.clear(); 3156 3157 int childCount = layout.getChildCount(); 3158 for (int j = 0; j < childCount; j++) { 3159 final View view = layout.getChildAt(j); 3160 Object tag = view.getTag(); 3161 3162 if (tag instanceof ShortcutInfo) { 3163 final ShortcutInfo info = (ShortcutInfo) tag; 3164 final Intent intent = info.intent; 3165 final ComponentName name = intent.getComponent(); 3166 3167 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3168 for (String packageName: packageNames) { 3169 if (packageName.equals(name.getPackageName())) { 3170 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3171 childrenToRemove.add(view); 3172 } 3173 } 3174 } 3175 } else if (tag instanceof FolderInfo) { 3176 final FolderInfo info = (FolderInfo) tag; 3177 final ArrayList<ShortcutInfo> contents = info.contents; 3178 final int contentsCount = contents.size(); 3179 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3180 new ArrayList<ShortcutInfo>(); 3181 3182 for (int k = 0; k < contentsCount; k++) { 3183 final ShortcutInfo appInfo = contents.get(k); 3184 final Intent intent = appInfo.intent; 3185 final ComponentName name = intent.getComponent(); 3186 3187 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3188 for (String packageName: packageNames) { 3189 if (packageName.equals(name.getPackageName())) { 3190 appsToRemoveFromFolder.add(appInfo); 3191 } 3192 } 3193 } 3194 } 3195 for (ShortcutInfo item: appsToRemoveFromFolder) { 3196 info.remove(item); 3197 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3198 } 3199 } else if (tag instanceof LauncherAppWidgetInfo) { 3200 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3201 final AppWidgetProviderInfo provider = 3202 widgets.getAppWidgetInfo(info.appWidgetId); 3203 if (provider != null) { 3204 for (String packageName: packageNames) { 3205 if (packageName.equals(provider.provider.getPackageName())) { 3206 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3207 childrenToRemove.add(view); 3208 } 3209 } 3210 } 3211 } 3212 } 3213 3214 childCount = childrenToRemove.size(); 3215 for (int j = 0; j < childCount; j++) { 3216 View child = childrenToRemove.get(j); 3217 // Note: We can not remove the view directly from CellLayoutChildren as this 3218 // does not re-mark the spaces as unoccupied. 3219 layoutParent.removeViewInLayout(child); 3220 if (child instanceof DropTarget) { 3221 mDragController.removeDropTarget((DropTarget)child); 3222 } 3223 } 3224 3225 if (childCount > 0) { 3226 layout.requestLayout(); 3227 layout.invalidate(); 3228 } 3229 } 3230 }); 3231 } 3232 } 3233 3234 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3235 final int screenCount = getChildCount(); 3236 for (int i = 0; i < screenCount; i++) { 3237 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3238 int childCount = layout.getChildCount(); 3239 for (int j = 0; j < childCount; j++) { 3240 final View view = layout.getChildAt(j); 3241 Object tag = view.getTag(); 3242 if (tag instanceof ShortcutInfo) { 3243 ShortcutInfo info = (ShortcutInfo)tag; 3244 // We need to check for ACTION_MAIN otherwise getComponent() might 3245 // return null for some shortcuts (for instance, for shortcuts to 3246 // web pages.) 3247 final Intent intent = info.intent; 3248 final ComponentName name = intent.getComponent(); 3249 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3250 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3251 final int appCount = apps.size(); 3252 for (int k = 0; k < appCount; k++) { 3253 ApplicationInfo app = apps.get(k); 3254 if (app.componentName.equals(name)) { 3255 info.setIcon(mIconCache.getIcon(info.intent)); 3256 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3257 new FastBitmapDrawable(info.getIcon(mIconCache)), 3258 null, null); 3259 } 3260 } 3261 } 3262 } 3263 } 3264 } 3265 } 3266 3267 void moveToDefaultScreen(boolean animate) { 3268 if (isSmall() || mIsSwitchingState) { 3269 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3270 } else if (animate) { 3271 snapToPage(mDefaultPage); 3272 } else { 3273 setCurrentPage(mDefaultPage); 3274 } 3275 getChildAt(mDefaultPage).requestFocus(); 3276 } 3277 3278 @Override 3279 public void syncPages() { 3280 } 3281 3282 @Override 3283 public void syncPageItems(int page) { 3284 } 3285 3286 @Override 3287 protected String getCurrentPageDescription() { 3288 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3289 return String.format(mContext.getString(R.string.workspace_scroll_format), 3290 page + 1, getChildCount()); 3291 } 3292 3293 public void getLocationInDragLayer(int[] loc) { 3294 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3295 } 3296} 3297