Workspace.java revision 0c4ade1ef611ea91e3f1ff2fdca4ae6982ff7804
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 View.OnClickListener { 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 private boolean mIsSmall = false; 156 private boolean mIsInUnshrinkAnimation = false; 157 private AnimatorListener mShrinkAnimationListener; 158 private AnimatorListener mUnshrinkAnimationListener; 159 enum ShrinkState { SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 160 private ShrinkState mShrinkState; 161 private boolean mWaitingToShrink = false; 162 private ShrinkState mWaitingToShrinkState; 163 private AnimatorSet mAnimator; 164 165 /** Is the user is dragging an item near the edge of a page? */ 166 private boolean mInScrollArea = false; 167 168 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 169 private Bitmap mDragOutline = null; 170 private final Rect mTempRect = new Rect(); 171 private final int[] mTempXY = new int[2]; 172 173 // Paint used to draw external drop outline 174 private final Paint mExternalDragOutlinePaint = new Paint(); 175 176 // Camera and Matrix used to determine the final position of a neighboring CellLayout 177 private final Matrix mMatrix = new Matrix(); 178 private final Camera mCamera = new Camera(); 179 private final float mTempFloat2[] = new float[2]; 180 181 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 182 int mWallpaperWidth; 183 int mWallpaperHeight; 184 WallpaperOffsetInterpolator mWallpaperOffset; 185 boolean mUpdateWallpaperOffsetImmediately = false; 186 boolean mSyncWallpaperOffsetWithScroll = true; 187 private Runnable mDelayedResizeRunnable; 188 189 // Variables relating to the creation of user folders by hovering shortcuts over shortcuts 190 private static final int FOLDER_CREATION_TIMEOUT = 250; 191 private final Alarm mFolderCreationAlarm = new Alarm(); 192 private FolderRingAnimator mDragFolderRingAnimator = null; 193 private View mLastDragOverView = null; 194 private boolean mCreateUserFolderOnDrop = false; 195 196 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 197 private float mXDown; 198 private float mYDown; 199 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 200 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 201 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 202 203 /** 204 * Used to inflate the Workspace from XML. 205 * 206 * @param context The application's context. 207 * @param attrs The attributes set containing the Workspace's customization values. 208 */ 209 public Workspace(Context context, AttributeSet attrs) { 210 this(context, attrs, 0); 211 } 212 213 /** 214 * Used to inflate the Workspace from XML. 215 * 216 * @param context The application's context. 217 * @param attrs The attributes set containing the Workspace's customization values. 218 * @param defStyle Unused. 219 */ 220 public Workspace(Context context, AttributeSet attrs, int defStyle) { 221 super(context, attrs, defStyle); 222 mContentIsRefreshable = false; 223 224 // With workspace, data is available straight from the get-go 225 setDataIsReady(); 226 227 if (!LauncherApplication.isScreenLarge()) { 228 mFadeInAdjacentScreens = false; 229 } 230 231 mWallpaperManager = WallpaperManager.getInstance(context); 232 233 int cellCountX = DEFAULT_CELL_COUNT_X; 234 int cellCountY = DEFAULT_CELL_COUNT_Y; 235 236 TypedArray a = context.obtainStyledAttributes(attrs, 237 R.styleable.Workspace, defStyle, 0); 238 239 final Resources res = context.getResources(); 240 if (LauncherApplication.isScreenLarge()) { 241 // Determine number of rows/columns dynamically 242 // TODO: This code currently fails on tablets with an aspect ratio < 1.3. 243 // Around that ratio we should make cells the same size in portrait and 244 // landscape 245 TypedArray actionBarSizeTypedArray = 246 context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize }); 247 final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f); 248 final float systemBarHeight = res.getDimension(R.dimen.status_bar_height); 249 final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp; 250 251 cellCountX = 1; 252 while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) { 253 cellCountX++; 254 } 255 256 cellCountY = 1; 257 while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1) 258 <= smallestScreenDim - systemBarHeight) { 259 cellCountY++; 260 } 261 } 262 263 mSpringLoadedShrinkFactor = 264 res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; 265 266 // if the value is manually specified, use that instead 267 cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX); 268 cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY); 269 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 270 a.recycle(); 271 272 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 273 setHapticFeedbackEnabled(false); 274 275 initWorkspace(); 276 277 // Disable multitouch across the workspace/all apps/customize tray 278 setMotionEventSplittingEnabled(true); 279 } 280 281 /** 282 * Initializes various states for this workspace. 283 */ 284 protected void initWorkspace() { 285 Context context = getContext(); 286 mCurrentPage = mDefaultPage; 287 Launcher.setScreen(mCurrentPage); 288 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 289 mIconCache = app.getIconCache(); 290 mExternalDragOutlinePaint.setAntiAlias(true); 291 setWillNotDraw(false); 292 293 try { 294 final Resources res = getResources(); 295 mBackground = res.getDrawable(R.drawable.apps_customize_bg); 296 } catch (Resources.NotFoundException e) { 297 // In this case, we will skip drawing background protection 298 } 299 300 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 301 @Override 302 public void onAnimationStart(Animator animation) { 303 mIsInUnshrinkAnimation = true; 304 } 305 306 @Override 307 public void onAnimationEnd(Animator animation) { 308 mIsInUnshrinkAnimation = false; 309 mSyncWallpaperOffsetWithScroll = true; 310 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 311 mAnimator = null; 312 enableChildrenLayers(false); 313 } 314 }; 315 mShrinkAnimationListener = new AnimatorListenerAdapter() { 316 @Override 317 public void onAnimationStart(Animator animation) { 318 enableChildrenLayers(true); 319 } 320 @Override 321 public void onAnimationEnd(Animator animation) { 322 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 323 mAnimator = null; 324 } 325 }; 326 mSnapVelocity = 600; 327 mWallpaperOffset = new WallpaperOffsetInterpolator(); 328 } 329 330 @Override 331 protected int getScrollMode() { 332 return SmoothPagedView.X_LARGE_MODE; 333 } 334 335 private void onAddView(View child) { 336 if (!(child instanceof CellLayout)) { 337 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 338 } 339 CellLayout cl = ((CellLayout) child); 340 cl.setOnInterceptTouchListener(this); 341 cl.setOnClickListener(this); 342 cl.setClickable(true); 343 cl.enableHardwareLayers(); 344 } 345 346 @Override 347 public void addView(View child, int index, LayoutParams params) { 348 onAddView(child); 349 super.addView(child, index, params); 350 } 351 352 @Override 353 public void addView(View child) { 354 onAddView(child); 355 super.addView(child); 356 } 357 358 @Override 359 public void addView(View child, int index) { 360 onAddView(child); 361 super.addView(child, index); 362 } 363 364 @Override 365 public void addView(View child, int width, int height) { 366 onAddView(child); 367 super.addView(child, width, height); 368 } 369 370 @Override 371 public void addView(View child, LayoutParams params) { 372 onAddView(child); 373 super.addView(child, params); 374 } 375 376 /** 377 * @return The open folder on the current screen, or null if there is none 378 */ 379 Folder getOpenFolder() { 380 DragLayer dragLayer = mLauncher.getDragLayer(); 381 int count = dragLayer.getChildCount(); 382 for (int i = 0; i < count; i++) { 383 View child = dragLayer.getChildAt(i); 384 if (child instanceof Folder) { 385 Folder folder = (Folder) child; 386 if (folder.getInfo().opened) 387 return folder; 388 } 389 } 390 return null; 391 } 392 393 boolean isTouchActive() { 394 return mTouchState != TOUCH_STATE_REST; 395 } 396 397 /** 398 * Adds the specified child in the specified screen. The position and dimension of 399 * the child are defined by x, y, spanX and spanY. 400 * 401 * @param child The child to add in one of the workspace's screens. 402 * @param screen The screen in which to add the child. 403 * @param x The X position of the child in the screen's grid. 404 * @param y The Y position of the child in the screen's grid. 405 * @param spanX The number of cells spanned horizontally by the child. 406 * @param spanY The number of cells spanned vertically by the child. 407 */ 408 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 409 addInScreen(child, screen, x, y, spanX, spanY, false); 410 } 411 412 void addInFullScreen(View child, int screen) { 413 addInScreen(child, screen, 0, 0, -1, -1); 414 } 415 416 /** 417 * Adds the specified child in the specified screen. The position and dimension of 418 * the child are defined by x, y, spanX and spanY. 419 * 420 * @param child The child to add in one of the workspace's screens. 421 * @param screen The screen in which to add the child. 422 * @param x The X position of the child in the screen's grid. 423 * @param y The Y position of the child in the screen's grid. 424 * @param spanX The number of cells spanned horizontally by the child. 425 * @param spanY The number of cells spanned vertically by the child. 426 * @param insert When true, the child is inserted at the beginning of the children list. 427 */ 428 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 429 if (screen < 0 || screen >= getChildCount()) { 430 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 431 + " (was " + screen + "); skipping child"); 432 return; 433 } 434 435 final CellLayout group = (CellLayout) getChildAt(screen); 436 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 437 if (lp == null) { 438 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 439 } else { 440 lp.cellX = x; 441 lp.cellY = y; 442 lp.cellHSpan = spanX; 443 lp.cellVSpan = spanY; 444 } 445 446 if (spanX < 0 && spanY < 0) { 447 lp.isLockedToGrid = false; 448 } 449 450 // Get the canonical child id to uniquely represent this view in this screen 451 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 452 boolean markCellsAsOccupied = !(child instanceof Folder); 453 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 454 // TODO: This branch occurs when the workspace is adding views 455 // outside of the defined grid 456 // maybe we should be deleting these items from the LauncherModel? 457 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 458 } 459 460 if (!(child instanceof Folder)) { 461 child.setHapticFeedbackEnabled(false); 462 child.setOnLongClickListener(mLongClickListener); 463 } 464 if (child instanceof DropTarget) { 465 mDragController.addDropTarget((DropTarget) child); 466 } 467 } 468 469 /** 470 * Check if the point (x, y) hits a given page. 471 */ 472 private boolean hitsPage(int index, float x, float y) { 473 final View page = getChildAt(index); 474 if (page != null) { 475 float[] localXY = { x, y }; 476 mapPointFromSelfToChild(page, localXY); 477 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 478 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 479 } 480 return false; 481 } 482 483 @Override 484 protected boolean hitsPreviousPage(float x, float y) { 485 // mNextPage is set to INVALID_PAGE whenever we are stationary. 486 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 487 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 488 return hitsPage(current - 1, x, y); 489 } 490 491 @Override 492 protected boolean hitsNextPage(float x, float y) { 493 // mNextPage is set to INVALID_PAGE whenever we are stationary. 494 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 495 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 496 return hitsPage(current + 1, x, y); 497 } 498 499 /** 500 * Called directly from a CellLayout (not by the framework), after we've been added as a 501 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 502 * that it should intercept touch events, which is not something that is normally supported. 503 */ 504 @Override 505 public boolean onTouch(View v, MotionEvent event) { 506 return (mIsSmall || mIsInUnshrinkAnimation); 507 } 508 509 /** 510 * Handle a click event on a CellLayout. 511 */ 512 @Override 513 public void onClick(View cellLayout) { 514 // Only allow clicks on a CellLayout if it is shrunken and visible. 515 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 516 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 517 } 518 } 519 520 protected void onWindowVisibilityChanged (int visibility) { 521 mLauncher.onWindowVisibilityChanged(visibility); 522 } 523 524 @Override 525 public boolean dispatchUnhandledMove(View focused, int direction) { 526 if (mIsSmall || mIsInUnshrinkAnimation) { 527 // when the home screens are shrunken, shouldn't allow side-scrolling 528 return false; 529 } 530 return super.dispatchUnhandledMove(focused, direction); 531 } 532 533 @Override 534 public boolean onInterceptTouchEvent(MotionEvent ev) { 535 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 536 mXDown = ev.getX(); 537 mYDown = ev.getY(); 538 } 539 540 return super.onInterceptTouchEvent(ev); 541 } 542 543 @Override 544 protected void determineScrollingStart(MotionEvent ev) { 545 if (!mIsSmall && !mIsInUnshrinkAnimation) { 546 float deltaX = Math.abs(ev.getX() - mXDown); 547 float deltaY = Math.abs(ev.getY() - mYDown); 548 549 if (Float.compare(deltaX, 0f) == 0) return; 550 551 float slope = deltaY / deltaX; 552 float theta = (float) Math.atan(slope); 553 554 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 555 cancelCurrentPageLongPress(); 556 } 557 558 if (theta > MAX_SWIPE_ANGLE) { 559 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 560 return; 561 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 562 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 563 // increase the touch slop to make it harder to begin scrolling the workspace. This 564 // results in vertically scrolling widgets to more easily. The higher the angle, the 565 // more we increase touch slop. 566 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 567 float extraRatio = (float) 568 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 569 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 570 } else { 571 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 572 super.determineScrollingStart(ev); 573 } 574 } 575 } 576 577 @Override 578 protected boolean isScrollingIndicatorEnabled() { 579 return mShrinkState != ShrinkState.SPRING_LOADED; 580 } 581 582 protected void onPageBeginMoving() { 583 super.onPageBeginMoving(); 584 585 if (mNextPage != INVALID_PAGE) { 586 // we're snapping to a particular screen 587 enableChildrenCache(mCurrentPage, mNextPage); 588 } else { 589 // this is when user is actively dragging a particular screen, they might 590 // swipe it either left or right (but we won't advance by more than one screen) 591 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 592 } 593 594 // Only show page outlines as we pan if we are on large screen 595 if (LauncherApplication.isScreenLarge()) { 596 showOutlines(); 597 } 598 } 599 600 protected void onPageEndMoving() { 601 super.onPageEndMoving(); 602 603 clearChildrenCache(); 604 // Hide the outlines, as long as we're not dragging 605 if (!mDragController.dragging()) { 606 // Only hide page outlines as we pan if we are on large screen 607 if (LauncherApplication.isScreenLarge()) { 608 hideOutlines(); 609 } 610 } 611 mOverScrollMaxBackgroundAlpha = 0.0f; 612 mOverScrollPageIndex = -1; 613 614 if (mDelayedResizeRunnable != null) { 615 mDelayedResizeRunnable.run(); 616 mDelayedResizeRunnable = null; 617 } 618 } 619 620 @Override 621 protected void notifyPageSwitchListener() { 622 super.notifyPageSwitchListener(); 623 Launcher.setScreen(mCurrentPage); 624 }; 625 626 // As a ratio of screen height, the total distance we want the parallax effect to span 627 // vertically 628 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 629 return 1.1f; 630 } 631 632 // As a ratio of screen height, the total distance we want the parallax effect to span 633 // horizontally 634 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 635 float aspectRatio = width / (float) height; 636 637 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 638 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 639 // We will use these two data points to extrapolate how much the wallpaper parallax effect 640 // to span (ie travel) at any aspect ratio: 641 642 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 643 final float ASPECT_RATIO_PORTRAIT = 10/16f; 644 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 645 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 646 647 // To find out the desired width at different aspect ratios, we use the following two 648 // formulas, where the coefficient on x is the aspect ratio (width/height): 649 // (16/10)x + y = 1.5 650 // (10/16)x + y = 1.2 651 // We solve for x and y and end up with a final formula: 652 final float x = 653 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 654 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 655 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 656 return x * aspectRatio + y; 657 } 658 659 // The range of scroll values for Workspace 660 private int getScrollRange() { 661 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 662 } 663 664 protected void setWallpaperDimension() { 665 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 666 DisplayMetrics displayMetrics = new DisplayMetrics(); 667 display.getRealMetrics(displayMetrics); 668 final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels); 669 final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels); 670 671 // We need to ensure that there is enough extra space in the wallpaper for the intended 672 // parallax effects 673 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 674 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 675 new Thread("setWallpaperDimension") { 676 public void run() { 677 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 678 } 679 }.start(); 680 } 681 682 public void setVerticalWallpaperOffset(float offset) { 683 mWallpaperOffset.setFinalY(offset); 684 } 685 public float getVerticalWallpaperOffset() { 686 return mWallpaperOffset.getCurrY(); 687 } 688 public void setHorizontalWallpaperOffset(float offset) { 689 mWallpaperOffset.setFinalX(offset); 690 } 691 public float getHorizontalWallpaperOffset() { 692 return mWallpaperOffset.getCurrX(); 693 } 694 695 private float wallpaperOffsetForCurrentScroll() { 696 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 697 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 698 // The wallpaper travel width is how far, from left to right, the wallpaper will move 699 // at this orientation (for example, in portrait mode we don't move all the way to the 700 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 701 int wallpaperTravelWidth = (int) (display.getWidth() * 702 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 703 if (!isStaticWallpaper) { 704 wallpaperTravelWidth = mWallpaperWidth; 705 } 706 707 // Set wallpaper offset steps (1 / (number of screens - 1)) 708 // We have 3 vertical offset states (centered, and then top/bottom aligned 709 // for all apps/customize) 710 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 711 712 int scrollRange = getScrollRange(); 713 float scrollProgressOffset = 0; 714 715 // Account for overscroll: you only see the absolute edge of the wallpaper if 716 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 717 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 718 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 719 if (isStaticWallpaper) { 720 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 721 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 722 scrollRange += 2 * overscrollOffset; 723 } 724 725 float scrollProgress = 726 mScrollX / (float) scrollRange + scrollProgressOffset; 727 float offsetInDips = wallpaperTravelWidth * scrollProgress + 728 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 729 float offset = offsetInDips / (float) mWallpaperWidth; 730 return offset; 731 } 732 private void syncWallpaperOffsetWithScroll() { 733 final boolean enableWallpaperEffects = isHardwareAccelerated(); 734 if (enableWallpaperEffects) { 735 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 736 } 737 } 738 739 public void updateWallpaperOffsetImmediately() { 740 mUpdateWallpaperOffsetImmediately = true; 741 } 742 743 private void updateWallpaperOffsets() { 744 boolean updateNow = false; 745 boolean keepUpdating = true; 746 if (mUpdateWallpaperOffsetImmediately) { 747 updateNow = true; 748 keepUpdating = false; 749 mWallpaperOffset.jumpToFinal(); 750 mUpdateWallpaperOffsetImmediately = false; 751 } else { 752 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 753 } 754 if (updateNow) { 755 if (mWindowToken != null) { 756 mWallpaperManager.setWallpaperOffsets(mWindowToken, 757 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 758 } 759 } 760 if (keepUpdating) { 761 fastInvalidate(); 762 } 763 } 764 765 class WallpaperOffsetInterpolator { 766 float mFinalHorizontalWallpaperOffset = 0.0f; 767 float mFinalVerticalWallpaperOffset = 0.5f; 768 float mHorizontalWallpaperOffset = 0.0f; 769 float mVerticalWallpaperOffset = 0.5f; 770 long mLastWallpaperOffsetUpdateTime; 771 boolean mIsMovingFast; 772 boolean mOverrideHorizontalCatchupConstant; 773 float mHorizontalCatchupConstant = 0.35f; 774 float mVerticalCatchupConstant = 0.35f; 775 776 public WallpaperOffsetInterpolator() { 777 } 778 779 public void setOverrideHorizontalCatchupConstant(boolean override) { 780 mOverrideHorizontalCatchupConstant = override; 781 } 782 783 public void setHorizontalCatchupConstant(float f) { 784 mHorizontalCatchupConstant = f; 785 } 786 787 public void setVerticalCatchupConstant(float f) { 788 mVerticalCatchupConstant = f; 789 } 790 791 public boolean computeScrollOffset() { 792 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 793 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 794 mIsMovingFast = false; 795 return false; 796 } 797 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 798 boolean isLandscape = display.getWidth() > display.getHeight(); 799 800 long currentTime = System.currentTimeMillis(); 801 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 802 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 803 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 804 805 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 806 if (!mIsMovingFast && xdiff > 0.07) { 807 mIsMovingFast = true; 808 } 809 810 float fractionToCatchUpIn1MsHorizontal; 811 if (mOverrideHorizontalCatchupConstant) { 812 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 813 } else if (mIsMovingFast) { 814 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 815 } else { 816 // slow 817 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 818 } 819 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 820 821 fractionToCatchUpIn1MsHorizontal /= 33f; 822 fractionToCatchUpIn1MsVertical /= 33f; 823 824 final float UPDATE_THRESHOLD = 0.00001f; 825 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 826 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 827 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 828 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 829 if (jumpToFinalValue) { 830 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 831 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 832 } else { 833 float percentToCatchUpVertical = 834 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 835 float percentToCatchUpHorizontal = 836 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 837 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 838 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 839 } 840 841 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 842 return true; 843 } 844 845 public float getCurrX() { 846 return mHorizontalWallpaperOffset; 847 } 848 849 public float getFinalX() { 850 return mFinalHorizontalWallpaperOffset; 851 } 852 853 public float getCurrY() { 854 return mVerticalWallpaperOffset; 855 } 856 857 public float getFinalY() { 858 return mFinalVerticalWallpaperOffset; 859 } 860 861 public void setFinalX(float x) { 862 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 863 } 864 865 public void setFinalY(float y) { 866 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 867 } 868 869 public void jumpToFinal() { 870 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 871 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 872 } 873 } 874 875 @Override 876 public void computeScroll() { 877 super.computeScroll(); 878 if (mSyncWallpaperOffsetWithScroll) { 879 syncWallpaperOffsetWithScroll(); 880 } 881 } 882 883 void showOutlines() { 884 if (!mIsSmall && !mIsInUnshrinkAnimation) { 885 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 886 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 887 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 888 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 889 mChildrenOutlineFadeInAnimation.start(); 890 } 891 } 892 893 void hideOutlines() { 894 if (!mIsSmall && !mIsInUnshrinkAnimation) { 895 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 896 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 897 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 898 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 899 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 900 mChildrenOutlineFadeOutAnimation.start(); 901 } 902 } 903 904 public void showOutlinesTemporarily() { 905 if (!mIsPageMoving && !isTouchActive()) { 906 snapToPage(mCurrentPage); 907 } 908 } 909 910 public void setChildrenOutlineAlpha(float alpha) { 911 mChildrenOutlineAlpha = alpha; 912 for (int i = 0; i < getChildCount(); i++) { 913 CellLayout cl = (CellLayout) getChildAt(i); 914 cl.setBackgroundAlpha(alpha); 915 } 916 } 917 918 public float getChildrenOutlineAlpha() { 919 return mChildrenOutlineAlpha; 920 } 921 922 void disableBackground() { 923 mDrawBackground = false; 924 } 925 void enableBackground() { 926 mDrawBackground = true; 927 } 928 929 private void showBackgroundGradientForAllApps() { 930 showBackgroundGradient(); 931 } 932 933 private void showBackgroundGradient() { 934 if (mBackground == null) return; 935 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 936 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 937 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 938 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 939 public void onAnimationUpdate(ValueAnimator animation) { 940 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 941 } 942 }); 943 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 944 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 945 mBackgroundFadeInAnimation.start(); 946 } 947 948 private void hideBackgroundGradient() { 949 if (mBackground == null) return; 950 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 951 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 952 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 953 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 954 public void onAnimationUpdate(ValueAnimator animation) { 955 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 956 } 957 }); 958 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 959 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 960 mBackgroundFadeOutAnimation.start(); 961 } 962 963 public void setBackgroundAlpha(float alpha) { 964 if (alpha != mBackgroundAlpha) { 965 mBackgroundAlpha = alpha; 966 invalidate(); 967 } 968 } 969 970 public float getBackgroundAlpha() { 971 return mBackgroundAlpha; 972 } 973 974 /** 975 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 976 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 977 * as being larger. This method computes what offset the rotated view should be translated 978 * in order to minimize this perceived gap. 979 * @param degrees Angle of the view 980 * @param width Width of the view 981 * @param height Height of the view 982 * @return Offset to be used in a View.setTranslationX() call 983 */ 984 private float getOffsetXForRotation(float degrees, int width, int height) { 985 mMatrix.reset(); 986 mCamera.save(); 987 mCamera.rotateY(Math.abs(degrees)); 988 mCamera.getMatrix(mMatrix); 989 mCamera.restore(); 990 991 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 992 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 993 mTempFloat2[0] = width; 994 mTempFloat2[1] = height; 995 mMatrix.mapPoints(mTempFloat2); 996 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 997 } 998 999 float backgroundAlphaInterpolator(float r) { 1000 float pivotA = 0.1f; 1001 float pivotB = 0.4f; 1002 if (r < pivotA) { 1003 return 0; 1004 } else if (r > pivotB) { 1005 return 1.0f; 1006 } else { 1007 return (r - pivotA)/(pivotB - pivotA); 1008 } 1009 } 1010 1011 float overScrollBackgroundAlphaInterpolator(float r) { 1012 float threshold = 0.08f; 1013 1014 if (r > mOverScrollMaxBackgroundAlpha) { 1015 mOverScrollMaxBackgroundAlpha = r; 1016 } else if (r < mOverScrollMaxBackgroundAlpha) { 1017 r = mOverScrollMaxBackgroundAlpha; 1018 } 1019 1020 return Math.min(r / threshold, 1.0f); 1021 } 1022 1023 @Override 1024 protected void screenScrolled(int screenCenter) { 1025 super.screenScrolled(screenCenter); 1026 1027 // If the screen is not xlarge, then don't rotate the CellLayouts 1028 // NOTE: If we don't update the side pages alpha, then we should not hide the side pages. 1029 // see unshrink(). 1030 if (!LauncherApplication.isScreenLarge()) return; 1031 1032 final int halfScreenSize = getMeasuredWidth() / 2; 1033 1034 for (int i = 0; i < getChildCount(); i++) { 1035 CellLayout cl = (CellLayout) getChildAt(i); 1036 if (cl != null) { 1037 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1038 int delta = screenCenter - (getChildOffset(i) - 1039 getRelativeChildOffset(i) + halfScreenSize); 1040 1041 float scrollProgress = delta / (totalDistance * 1.0f); 1042 scrollProgress = Math.min(scrollProgress, 1.0f); 1043 scrollProgress = Math.max(scrollProgress, -1.0f); 1044 1045 // If the current page (i) is being overscrolled, we use a different 1046 // set of rules for setting the background alpha multiplier. 1047 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1048 i == getChildCount() -1 )) { 1049 cl.setBackgroundAlphaMultiplier( 1050 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1051 mOverScrollPageIndex = i; 1052 } else if (mOverScrollPageIndex != i) { 1053 cl.setBackgroundAlphaMultiplier( 1054 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1055 } 1056 1057 float rotation = WORKSPACE_ROTATION * scrollProgress; 1058 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1059 cl.setTranslationX(translationX); 1060 1061 cl.setRotationY(rotation); 1062 } 1063 } 1064 } 1065 1066 protected void onAttachedToWindow() { 1067 super.onAttachedToWindow(); 1068 mWindowToken = getWindowToken(); 1069 computeScroll(); 1070 mDragController.setWindowToken(mWindowToken); 1071 } 1072 1073 protected void onDetachedFromWindow() { 1074 mWindowToken = null; 1075 } 1076 1077 @Override 1078 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1079 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1080 mUpdateWallpaperOffsetImmediately = true; 1081 } 1082 super.onLayout(changed, left, top, right, bottom); 1083 1084 // if shrinkToBottom() is called on initialization, it has to be deferred 1085 // until after the first call to onLayout so that it has the correct width 1086 if (mWaitingToShrink) { 1087 // shrink can trigger a synchronous onLayout call, so we 1088 // post this to avoid a stack overflow / tangled onLayout calls 1089 post(new Runnable() { 1090 public void run() { 1091 shrink(mWaitingToShrinkState, false); 1092 mWaitingToShrink = false; 1093 } 1094 }); 1095 } 1096 } 1097 1098 @Override 1099 protected void onDraw(Canvas canvas) { 1100 updateWallpaperOffsets(); 1101 1102 // Draw the background gradient if necessary 1103 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1104 int alpha = (int) (mBackgroundAlpha * 255); 1105 mBackground.setAlpha(alpha); 1106 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1107 getMeasuredHeight()); 1108 mBackground.draw(canvas); 1109 } 1110 1111 super.onDraw(canvas); 1112 } 1113 1114 @Override 1115 protected void dispatchDraw(Canvas canvas) { 1116 if (mIsSmall || mIsInUnshrinkAnimation) { 1117 // Draw all the workspaces if we're small 1118 final int pageCount = getChildCount(); 1119 final long drawingTime = getDrawingTime(); 1120 for (int i = 0; i < pageCount; i++) { 1121 final CellLayout page = (CellLayout) getChildAt(i); 1122 if (page.getVisibility() == VISIBLE 1123 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1124 drawChild(canvas, page, drawingTime); 1125 } 1126 } 1127 } else { 1128 super.dispatchDraw(canvas); 1129 1130 if (mInScrollArea && !LauncherApplication.isScreenLarge()) { 1131 final int width = getWidth(); 1132 final int height = getHeight(); 1133 final int pageHeight = getChildAt(0).getHeight(); 1134 1135 // This determines the height of the glowing edge: 90% of the page height 1136 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1137 1138 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1139 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1140 1141 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1142 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo); 1143 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1144 d.draw(canvas); 1145 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1146 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo); 1147 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1148 d.draw(canvas); 1149 } 1150 } 1151 } 1152 } 1153 1154 @Override 1155 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1156 if (!mLauncher.isAllAppsVisible()) { 1157 final Folder openFolder = getOpenFolder(); 1158 if (openFolder != null) { 1159 return openFolder.requestFocus(direction, previouslyFocusedRect); 1160 } else { 1161 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1162 } 1163 } 1164 return false; 1165 } 1166 1167 @Override 1168 public int getDescendantFocusability() { 1169 if (mIsSmall) { 1170 return ViewGroup.FOCUS_BLOCK_DESCENDANTS; 1171 } 1172 return super.getDescendantFocusability(); 1173 } 1174 1175 @Override 1176 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1177 if (!mLauncher.isAllAppsVisible()) { 1178 final Folder openFolder = getOpenFolder(); 1179 if (openFolder != null) { 1180 openFolder.addFocusables(views, direction); 1181 } else { 1182 super.addFocusables(views, direction, focusableMode); 1183 } 1184 } 1185 } 1186 1187 void enableChildrenCache(int fromPage, int toPage) { 1188 if (fromPage > toPage) { 1189 final int temp = fromPage; 1190 fromPage = toPage; 1191 toPage = temp; 1192 } 1193 1194 final int screenCount = getChildCount(); 1195 1196 fromPage = Math.max(fromPage, 0); 1197 toPage = Math.min(toPage, screenCount - 1); 1198 1199 for (int i = fromPage; i <= toPage; i++) { 1200 final CellLayout layout = (CellLayout) getChildAt(i); 1201 layout.setChildrenDrawnWithCacheEnabled(true); 1202 layout.setChildrenDrawingCacheEnabled(true); 1203 } 1204 } 1205 1206 void clearChildrenCache() { 1207 final int screenCount = getChildCount(); 1208 for (int i = 0; i < screenCount; i++) { 1209 final CellLayout layout = (CellLayout) getChildAt(i); 1210 layout.setChildrenDrawnWithCacheEnabled(false); 1211 } 1212 } 1213 1214 protected void enableChildrenLayers(boolean enable) { 1215 for (int i = 0; i < getPageCount(); i++) { 1216 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1217 } 1218 } 1219 @Override 1220 protected void pageBeginMoving() { 1221 enableChildrenLayers(true); 1222 super.pageBeginMoving(); 1223 } 1224 1225 @Override 1226 protected void pageEndMoving() { 1227 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1228 enableChildrenLayers(false); 1229 } 1230 super.pageEndMoving(); 1231 } 1232 1233 @Override 1234 protected void onWallpaperTap(MotionEvent ev) { 1235 final int[] position = mTempCell; 1236 getLocationOnScreen(position); 1237 1238 int pointerIndex = ev.getActionIndex(); 1239 position[0] += (int) ev.getX(pointerIndex); 1240 position[1] += (int) ev.getY(pointerIndex); 1241 1242 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1243 ev.getAction() == MotionEvent.ACTION_UP 1244 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1245 position[0], position[1], 0, null); 1246 } 1247 1248 public boolean isSmall() { 1249 return mIsSmall; 1250 } 1251 1252 private float getYScaleForScreen(int screen) { 1253 int x = Math.abs(screen - 2); 1254 1255 // TODO: This should be generalized for use with arbitrary rotation angles. 1256 switch(x) { 1257 case 0: return EXTRA_SCALE_FACTOR_0; 1258 case 1: return EXTRA_SCALE_FACTOR_1; 1259 case 2: return EXTRA_SCALE_FACTOR_2; 1260 } 1261 return 1.0f; 1262 } 1263 1264 public void shrink(ShrinkState shrinkState) { 1265 shrink(shrinkState, true); 1266 } 1267 1268 // we use this to shrink the workspace for the all apps view and the customize view 1269 public void shrink(ShrinkState shrinkState, boolean animated) { 1270 if (mFirstLayout) { 1271 // (mFirstLayout == "first layout has not happened yet") 1272 // if we get a call to shrink() as part of our initialization (for example, if 1273 // Launcher is started in All Apps mode) then we need to wait for a layout call 1274 // to get our width so we can layout the mini-screen views correctly 1275 mWaitingToShrink = true; 1276 mWaitingToShrinkState = shrinkState; 1277 return; 1278 } 1279 // Stop any scrolling, move to the current page right away 1280 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1281 1282 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1283 if (currentPage == null) { 1284 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1285 + " mNextPage " + mNextPage); 1286 return; 1287 } 1288 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1289 currentPage.setBackgroundAlpha(0.0f); 1290 } 1291 currentPage.setBackgroundAlphaMultiplier(1.0f); 1292 1293 mIsSmall = true; 1294 mShrinkState = shrinkState; 1295 1296 // we intercept and reject all touch events when we're small, so be sure to reset the state 1297 mTouchState = TOUCH_STATE_REST; 1298 mActivePointerId = INVALID_POINTER; 1299 1300 final Resources res = getResources(); 1301 final int screenWidth = getWidth(); 1302 final int screenHeight = getHeight(); 1303 1304 // How much the workspace shrinks when we enter all apps or customization mode 1305 final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f; 1306 1307 // Making the assumption that all pages have the same width as the 0th 1308 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1309 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1310 1311 final int scaledPageWidth = (int) (shrinkFactor * pageWidth); 1312 final int scaledPageHeight = (int) (shrinkFactor * pageHeight); 1313 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1314 1315 final int screenCount = getChildCount(); 1316 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1317 1318 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1319 float y = (isPortrait ? 1320 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1321 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1322 float finalAlpha = 1.0f; 1323 float extraShrinkFactor = 1.0f; 1324 1325 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1326 y = screenHeight - y - scaledPageHeight; 1327 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1328 // We shrink and disappear to nothing in the case of all apps 1329 // (which is when we shrink to the bottom) 1330 y = screenHeight - y - scaledPageHeight; 1331 finalAlpha = 0.0f; 1332 } else if (shrinkState == ShrinkState.MIDDLE) { 1333 y = screenHeight / 2 - scaledPageHeight / 2; 1334 finalAlpha = 1.0f; 1335 } 1336 1337 int duration; 1338 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1339 duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); 1340 } else { 1341 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1342 } 1343 1344 // We animate all the screens to the centered position in workspace 1345 // At the same time, the screens become greyed/dimmed 1346 1347 // newX is initialized to the left-most position of the centered screens 1348 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1349 1350 // We are going to scale about the center of the view, so we need to adjust the positions 1351 // of the views accordingly 1352 x -= (pageWidth - scaledPageWidth) / 2.0f; 1353 y -= (pageHeight - scaledPageHeight) / 2.0f; 1354 1355 if (mAnimator != null) { 1356 mAnimator.cancel(); 1357 } 1358 1359 mAnimator = new AnimatorSet(); 1360 1361 final int childCount = getChildCount(); 1362 final float[] oldXs = new float[childCount]; 1363 final float[] oldYs = new float[childCount]; 1364 final float[] oldScaleXs = new float[childCount]; 1365 final float[] oldScaleYs = new float[childCount]; 1366 final float[] oldBackgroundAlphas = new float[childCount]; 1367 final float[] oldAlphas = new float[childCount]; 1368 final float[] oldRotationYs = new float[childCount]; 1369 final float[] newXs = new float[childCount]; 1370 final float[] newYs = new float[childCount]; 1371 final float[] newScaleXs = new float[childCount]; 1372 final float[] newScaleYs = new float[childCount]; 1373 final float[] newBackgroundAlphas = new float[childCount]; 1374 final float[] newAlphas = new float[childCount]; 1375 final float[] newRotationYs = new float[childCount]; 1376 1377 for (int i = 0; i < screenCount; i++) { 1378 final CellLayout cl = (CellLayout) getChildAt(i); 1379 1380 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1381 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1382 float rotationScaleY = getYScaleForScreen(i); 1383 1384 oldAlphas[i] = cl.getAlpha(); 1385 newAlphas[i] = finalAlpha; 1386 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1387 // if the CellLayout will be visible during the animation, force building its 1388 // hardware layer immediately so we don't see a blip later in the animation 1389 cl.buildChildrenLayer(); 1390 } 1391 if (animated) { 1392 oldXs[i] = cl.getX(); 1393 oldYs[i] = cl.getY(); 1394 oldScaleXs[i] = cl.getScaleX(); 1395 oldScaleYs[i] = cl.getScaleY(); 1396 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1397 oldRotationYs[i] = cl.getRotationY(); 1398 newXs[i] = x; 1399 newYs[i] = y; 1400 newScaleXs[i] = shrinkFactor * rotationScaleX * extraShrinkFactor; 1401 newScaleYs[i] = shrinkFactor * rotationScaleY * extraShrinkFactor; 1402 newBackgroundAlphas[i] = finalAlpha; 1403 newRotationYs[i] = rotation; 1404 } else { 1405 cl.setX((int)x); 1406 cl.setY((int)y); 1407 cl.setScaleX(shrinkFactor * rotationScaleX * extraShrinkFactor); 1408 cl.setScaleY(shrinkFactor * rotationScaleY * extraShrinkFactor); 1409 cl.setBackgroundAlpha(finalAlpha); 1410 cl.setAlpha(finalAlpha); 1411 cl.setRotationY(rotation); 1412 mShrinkAnimationListener.onAnimationEnd(null); 1413 } 1414 // increment newX for the next screen 1415 x += scaledPageWidth + extraScaledSpacing; 1416 } 1417 1418 float wallpaperOffset = 0.5f; 1419 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1420 int wallpaperTravelHeight = (int) (display.getHeight() * 1421 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1422 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1423 boolean isLandscape = display.getWidth() > display.getHeight(); 1424 1425 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1426 // to/from all apps 1427 final boolean enableWallpaperEffects = 1428 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1429 if (enableWallpaperEffects) { 1430 switch (shrinkState) { 1431 // animating in 1432 case MIDDLE: 1433 case SPRING_LOADED: 1434 wallpaperOffset = 0.5f; 1435 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1436 break; 1437 case BOTTOM_HIDDEN: 1438 case BOTTOM_VISIBLE: 1439 // allapps 1440 wallpaperOffset = 0.5f - offsetFromCenter; 1441 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1442 break; 1443 } 1444 } 1445 1446 setLayoutScale(1.0f); 1447 if (animated) { 1448 if (enableWallpaperEffects) { 1449 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1450 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1451 } 1452 1453 mSyncWallpaperOffsetWithScroll = false; 1454 1455 ValueAnimator animWithInterpolator = 1456 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1457 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1458 1459 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1460 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1461 final float newHorizontalWallpaperOffset = 0.5f; 1462 final float newVerticalWallpaperOffset = wallpaperOffset; 1463 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1464 public void onAnimationUpdate(float a, float b) { 1465 if (b == 0f) { 1466 // an optimization, and required for correct behavior. 1467 return; 1468 } 1469 fastInvalidate(); 1470 if (enableWallpaperEffects) { 1471 setHorizontalWallpaperOffset( 1472 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1473 setVerticalWallpaperOffset( 1474 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1475 } 1476 for (int i = 0; i < screenCount; i++) { 1477 final CellLayout cl = (CellLayout) getChildAt(i); 1478 cl.fastInvalidate(); 1479 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1480 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1481 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1482 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1483 cl.setFastBackgroundAlpha( 1484 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1485 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1486 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1487 } 1488 } 1489 }); 1490 mAnimator.playTogether(animWithInterpolator); 1491 mAnimator.addListener(mShrinkAnimationListener); 1492 mAnimator.start(); 1493 } else if (enableWallpaperEffects) { 1494 setVerticalWallpaperOffset(wallpaperOffset); 1495 setHorizontalWallpaperOffset(0.5f); 1496 updateWallpaperOffsetImmediately(); 1497 } 1498 setChildrenDrawnWithCacheEnabled(true); 1499 1500 showBackgroundGradientForAllApps(); 1501 } 1502 1503 /* 1504 * This interpolator emulates the rate at which the perceived scale of an object changes 1505 * as its distance from a camera increases. When this interpolator is applied to a scale 1506 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1507 * from the camera. 1508 */ 1509 static class ZInterpolator implements TimeInterpolator { 1510 private float focalLength; 1511 1512 public ZInterpolator(float foc) { 1513 focalLength = foc; 1514 } 1515 1516 public float getInterpolation(float input) { 1517 return (1.0f - focalLength / (focalLength + input)) / 1518 (1.0f - focalLength / (focalLength + 1.0f)); 1519 } 1520 } 1521 1522 /* 1523 * The exact reverse of ZInterpolator. 1524 */ 1525 static class InverseZInterpolator implements TimeInterpolator { 1526 private ZInterpolator zInterpolator; 1527 public InverseZInterpolator(float foc) { 1528 zInterpolator = new ZInterpolator(foc); 1529 } 1530 public float getInterpolation(float input) { 1531 return 1 - zInterpolator.getInterpolation(1 - input); 1532 } 1533 } 1534 1535 /* 1536 * ZInterpolator compounded with an ease-out. 1537 */ 1538 static class ZoomOutInterpolator implements TimeInterpolator { 1539 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1540 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1541 1542 public float getInterpolation(float input) { 1543 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1544 } 1545 } 1546 1547 /* 1548 * InvereZInterpolator compounded with an ease-out. 1549 */ 1550 static class ZoomInInterpolator implements TimeInterpolator { 1551 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1552 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1553 1554 public float getInterpolation(float input) { 1555 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1556 } 1557 } 1558 1559 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1560 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1561 1562 /* 1563 * 1564 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we 1565 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1566 * 1567 * These methods mark the appropriate pages as accepting drops (which alters their visual 1568 * appearance). 1569 * 1570 */ 1571 public void onDragStartedWithItem(View v) { 1572 final Canvas canvas = new Canvas(); 1573 1574 // We need to add extra padding to the bitmap to make room for the glow effect 1575 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1576 1577 // The outline is used to visualize where the item will land if dropped 1578 mDragOutline = createDragOutline(v, canvas, bitmapPadding); 1579 } 1580 1581 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1582 final Canvas canvas = new Canvas(); 1583 1584 // We need to add extra padding to the bitmap to make room for the glow effect 1585 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1586 1587 CellLayout cl = (CellLayout) getChildAt(0); 1588 1589 int[] size = cl.cellSpansToSize(spanX, spanY); 1590 1591 // The outline is used to visualize where the item will land if dropped 1592 mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]); 1593 } 1594 1595 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1596 // never dragged over 1597 public void onDragStopped(boolean success) { 1598 // In the success case, DragController has already called onDragExit() 1599 if (!success) { 1600 doDragExit(null); 1601 } 1602 } 1603 1604 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1605 public void unshrink(CellLayout clThatWasClicked) { 1606 unshrink(clThatWasClicked, false); 1607 } 1608 1609 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1610 int newCurrentPage = indexOfChild(clThatWasClicked); 1611 if (mIsSmall) { 1612 if (springLoaded) { 1613 setLayoutScale(mSpringLoadedShrinkFactor); 1614 } 1615 scrollToNewPageWithoutMovingPages(newCurrentPage); 1616 unshrink(true, springLoaded); 1617 } 1618 } 1619 1620 1621 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1622 mShrinkState = ShrinkState.SPRING_LOADED; 1623 unshrink(clThatWasClicked, true); 1624 } 1625 1626 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1627 shrink(shrinkState); 1628 } 1629 1630 public void exitWidgetResizeMode() { 1631 DragLayer dragLayer = mLauncher.getDragLayer(); 1632 dragLayer.clearAllResizeFrames(); 1633 } 1634 1635 void unshrink(boolean animated) { 1636 unshrink(animated, false); 1637 } 1638 1639 void unshrink(boolean animated, boolean springLoaded) { 1640 mWaitingToShrink = false; 1641 if (mIsSmall) { 1642 float finalScaleFactor = 1.0f; 1643 float finalBackgroundAlpha = 0.0f; 1644 if (springLoaded) { 1645 finalScaleFactor = mSpringLoadedShrinkFactor; 1646 finalBackgroundAlpha = 1.0f; 1647 } else { 1648 mIsSmall = false; 1649 } 1650 if (mAnimator != null) { 1651 mAnimator.cancel(); 1652 } 1653 1654 mAnimator = new AnimatorSet(); 1655 final int screenCount = getChildCount(); 1656 1657 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1658 1659 final float[] oldTranslationXs = new float[getChildCount()]; 1660 final float[] oldTranslationYs = new float[getChildCount()]; 1661 final float[] oldScaleXs = new float[getChildCount()]; 1662 final float[] oldScaleYs = new float[getChildCount()]; 1663 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1664 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1665 final float[] oldAlphas = new float[getChildCount()]; 1666 final float[] oldRotationYs = new float[getChildCount()]; 1667 final float[] newTranslationXs = new float[getChildCount()]; 1668 final float[] newTranslationYs = new float[getChildCount()]; 1669 final float[] newScaleXs = new float[getChildCount()]; 1670 final float[] newScaleYs = new float[getChildCount()]; 1671 final float[] newBackgroundAlphas = new float[getChildCount()]; 1672 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1673 final float[] newAlphas = new float[getChildCount()]; 1674 final float[] newRotationYs = new float[getChildCount()]; 1675 1676 for (int i = 0; i < screenCount; i++) { 1677 final CellLayout cl = (CellLayout)getChildAt(i); 1678 float finalAlphaValue = 0f; 1679 float rotation = 0f; 1680 if (LauncherApplication.isScreenLarge()) { 1681 finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1682 1683 if (i < mCurrentPage) { 1684 rotation = WORKSPACE_ROTATION; 1685 } else if (i > mCurrentPage) { 1686 rotation = -WORKSPACE_ROTATION; 1687 } 1688 } else { 1689 // Don't hide the side panes on the phone if we don't also update the side pages 1690 // alpha. See screenScrolled(). 1691 finalAlphaValue = 1f; 1692 } 1693 float finalAlphaMultiplierValue = 1f; 1694 1695 float translation = 0f; 1696 1697 // If the screen is not xlarge, then don't rotate the CellLayouts 1698 // NOTE: If we don't update the side pages alpha, then we should not hide the side 1699 // pages. see unshrink(). 1700 if (LauncherApplication.isScreenLarge()) { 1701 translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1702 } 1703 1704 oldAlphas[i] = cl.getAlpha(); 1705 newAlphas[i] = finalAlphaValue; 1706 if (animated) { 1707 oldTranslationXs[i] = cl.getTranslationX(); 1708 oldTranslationYs[i] = cl.getTranslationY(); 1709 oldScaleXs[i] = cl.getScaleX(); 1710 oldScaleYs[i] = cl.getScaleY(); 1711 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1712 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1713 oldRotationYs[i] = cl.getRotationY(); 1714 1715 newTranslationXs[i] = translation; 1716 newTranslationYs[i] = 0f; 1717 newScaleXs[i] = finalScaleFactor; 1718 newScaleYs[i] = finalScaleFactor; 1719 newBackgroundAlphas[i] = finalBackgroundAlpha; 1720 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1721 newRotationYs[i] = rotation; 1722 } else { 1723 cl.setTranslationX(translation); 1724 cl.setTranslationY(0.0f); 1725 cl.setScaleX(finalScaleFactor); 1726 cl.setScaleY(finalScaleFactor); 1727 cl.setBackgroundAlpha(0.0f); 1728 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1729 cl.setAlpha(finalAlphaValue); 1730 cl.setRotationY(rotation); 1731 mUnshrinkAnimationListener.onAnimationEnd(null); 1732 } 1733 } 1734 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1735 boolean isLandscape = display.getWidth() > display.getHeight(); 1736 // on phones, don't scroll the wallpaper horizontally or vertically when switching 1737 // to/from all apps 1738 final boolean enableWallpaperEffects = 1739 isHardwareAccelerated() && LauncherApplication.isScreenLarge(); 1740 if (enableWallpaperEffects) { 1741 switch (mShrinkState) { 1742 // animating out 1743 case MIDDLE: 1744 case SPRING_LOADED: 1745 if (animated) { 1746 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1747 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1748 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1749 } 1750 break; 1751 case BOTTOM_HIDDEN: 1752 case BOTTOM_VISIBLE: 1753 // all apps 1754 if (animated) { 1755 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1756 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1757 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1758 } 1759 break; 1760 } 1761 } 1762 if (animated) { 1763 ValueAnimator animWithInterpolator = 1764 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1765 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1766 1767 final float oldHorizontalWallpaperOffset = enableWallpaperEffects ? 1768 getHorizontalWallpaperOffset() : 0; 1769 final float oldVerticalWallpaperOffset = enableWallpaperEffects ? 1770 getVerticalWallpaperOffset() : 0; 1771 final float newHorizontalWallpaperOffset = enableWallpaperEffects ? 1772 wallpaperOffsetForCurrentScroll() : 0; 1773 final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0; 1774 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1775 public void onAnimationUpdate(float a, float b) { 1776 if (b == 0f) { 1777 // an optimization, but not required 1778 return; 1779 } 1780 fastInvalidate(); 1781 if (enableWallpaperEffects) { 1782 setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset 1783 + b * newHorizontalWallpaperOffset); 1784 setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset 1785 + b * newVerticalWallpaperOffset); 1786 } 1787 for (int i = 0; i < screenCount; i++) { 1788 final CellLayout cl = (CellLayout) getChildAt(i); 1789 cl.fastInvalidate(); 1790 cl.setFastTranslationX( 1791 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1792 cl.setFastTranslationY( 1793 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1794 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1795 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1796 cl.setFastBackgroundAlpha( 1797 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1798 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1799 b * newBackgroundAlphaMultipliers[i]); 1800 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1801 } 1802 } 1803 }); 1804 1805 ValueAnimator rotationAnim = 1806 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1807 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1808 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1809 public void onAnimationUpdate(float a, float b) { 1810 // don't invalidate workspace because we did it above 1811 if (b == 0f) { 1812 // an optimization, but not required 1813 return; 1814 } 1815 for (int i = 0; i < screenCount; i++) { 1816 final CellLayout cl = (CellLayout) getChildAt(i); 1817 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1818 } 1819 } 1820 }); 1821 1822 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1823 // If we call this when we're not animated, onAnimationEnd is never called on 1824 // the listener; make sure we only use the listener when we're actually animating 1825 mAnimator.addListener(mUnshrinkAnimationListener); 1826 mAnimator.start(); 1827 } else { 1828 if (enableWallpaperEffects) { 1829 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1830 setVerticalWallpaperOffset(0.5f); 1831 updateWallpaperOffsetImmediately(); 1832 } 1833 } 1834 } 1835 1836 if (!springLoaded) { 1837 hideBackgroundGradient(); 1838 } 1839 } 1840 1841 /** 1842 * Draw the View v into the given Canvas. 1843 * 1844 * @param v the view to draw 1845 * @param destCanvas the canvas to draw on 1846 * @param padding the horizontal and vertical padding to use when drawing 1847 */ 1848 private void drawDragView(View v, Canvas destCanvas, int padding) { 1849 final Rect clipRect = mTempRect; 1850 v.getDrawingRect(clipRect); 1851 1852 // For a TextView, adjust the clip rect so that we don't include the text label 1853 if (v instanceof BubbleTextView) { 1854 final BubbleTextView tv = (BubbleTextView) v; 1855 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1856 tv.getLayout().getLineTop(0); 1857 } else if (v instanceof TextView) { 1858 final TextView tv = (TextView) v; 1859 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1860 tv.getLayout().getLineTop(0); 1861 } else if (v instanceof FolderIcon) { 1862 clipRect.bottom = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 1863 } 1864 1865 // Draw the View into the bitmap. 1866 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1867 // they set scrollX and scrollY to large values to achieve centered text 1868 1869 destCanvas.save(); 1870 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1871 destCanvas.clipRect(clipRect, Op.REPLACE); 1872 v.draw(destCanvas); 1873 destCanvas.restore(); 1874 } 1875 1876 /** 1877 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1878 * Responsibility for the bitmap is transferred to the caller. 1879 */ 1880 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1881 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1882 final Bitmap b = Bitmap.createBitmap( 1883 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1884 1885 canvas.setBitmap(b); 1886 drawDragView(v, canvas, padding); 1887 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1888 return b; 1889 } 1890 1891 /** 1892 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1893 * Responsibility for the bitmap is transferred to the caller. 1894 */ 1895 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1896 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1897 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1898 canvas.setBitmap(b); 1899 1900 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1901 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1902 (h - padding) / (float) orig.getHeight()); 1903 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1904 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1905 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1906 1907 // center the image 1908 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1909 1910 Paint p = new Paint(); 1911 p.setFilterBitmap(true); 1912 canvas.drawBitmap(orig, src, dst, p); 1913 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1914 1915 return b; 1916 } 1917 1918 /** 1919 * Creates a drag outline to represent a drop (that we don't have the actual information for 1920 * yet). May be changed in the future to alter the drop outline slightly depending on the 1921 * clip description mime data. 1922 */ 1923 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1924 Resources r = getResources(); 1925 final int outlineColor = r.getColor(R.color.drag_outline_color); 1926 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1927 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1928 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1929 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1930 final Bitmap b = Bitmap.createBitmap( 1931 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1932 1933 canvas.setBitmap(b); 1934 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1935 rectRadius, rectRadius, mExternalDragOutlinePaint); 1936 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1937 return b; 1938 } 1939 1940 /** 1941 * Returns a new bitmap to show when the given View is being dragged around. 1942 * Responsibility for the bitmap is transferred to the caller. 1943 */ 1944 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1945 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1946 final Bitmap b = Bitmap.createBitmap( 1947 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1948 1949 canvas.setBitmap(b); 1950 canvas.drawBitmap(mDragOutline, 0, 0, null); 1951 drawDragView(v, canvas, padding); 1952 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1953 1954 return b; 1955 } 1956 1957 void startDrag(CellLayout.CellInfo cellInfo) { 1958 View child = cellInfo.cell; 1959 1960 // Make sure the drag was started by a long press as opposed to a long click. 1961 if (!child.isInTouchMode()) { 1962 return; 1963 } 1964 1965 mDragInfo = cellInfo; 1966 1967 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 1968 current.onDragChild(child); 1969 1970 child.clearFocus(); 1971 child.setPressed(false); 1972 1973 final Canvas canvas = new Canvas(); 1974 1975 // We need to add extra padding to the bitmap to make room for the glow effect 1976 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1977 1978 // The outline is used to visualize where the item will land if dropped 1979 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1980 1981 // The drag bitmap follows the touch point around on the screen 1982 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1983 1984 final int bmpWidth = b.getWidth(); 1985 final int bmpHeight = b.getHeight(); 1986 1987 mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); 1988 final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1989 final int dragLayerY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1990 1991 Rect dragRect = null; 1992 if (child instanceof BubbleTextView) { 1993 int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size); 1994 int top = child.getPaddingTop(); 1995 int left = (bmpWidth - iconSize) / 2; 1996 int right = left + iconSize; 1997 int bottom = top + iconSize; 1998 dragRect = new Rect(left, top, right, bottom); 1999 } else if (child instanceof FolderIcon) { 2000 int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size); 2001 dragRect = new Rect(0, 0, child.getWidth(), previewSize); 2002 } 2003 2004 mLauncher.lockScreenOrientation(); 2005 mDragController.startDrag(b, dragLayerX, dragLayerY, this, child.getTag(), 2006 DragController.DRAG_ACTION_MOVE, dragRect); 2007 b.recycle(); 2008 } 2009 2010 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2011 boolean insertAtFirst, int intersectX, int intersectY) { 2012 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2013 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2014 2015 final int[] cellXY = new int[2]; 2016 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2017 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2018 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2019 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2020 cellXY[0], cellXY[1]); 2021 } 2022 2023 /** 2024 * {@inheritDoc} 2025 */ 2026 public boolean acceptDrop(DragObject d) { 2027 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2028 if (d.dragSource != this) { 2029 // Don't accept the drop if we're not over a screen at time of drop 2030 if (mDragTargetLayout == null) { 2031 return false; 2032 } 2033 2034 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2035 d.dragView, mDragViewVisualCenter); 2036 2037 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2038 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2039 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2040 2041 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2042 (int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell); 2043 2044 if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) { 2045 return true; 2046 } 2047 if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, 2048 mTargetCell)) { 2049 return true; 2050 } 2051 2052 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2053 2054 // Don't accept the drop if there's no room for the item 2055 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2056 mLauncher.showOutOfSpaceMessage(); 2057 return false; 2058 } 2059 } 2060 return true; 2061 } 2062 2063 boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, 2064 boolean considerTimeout) { 2065 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2066 2067 boolean hasntMoved = mDragInfo != null 2068 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2069 2070 if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { 2071 return false; 2072 } 2073 2074 boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); 2075 boolean willBecomeShortcut = 2076 (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || 2077 info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); 2078 2079 return (aboveShortcut && willBecomeShortcut); 2080 } 2081 2082 boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) { 2083 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2084 if (dropOverView instanceof FolderIcon) { 2085 FolderIcon fi = (FolderIcon) dropOverView; 2086 if (fi.acceptDrop(dragInfo)) { 2087 return true; 2088 } 2089 } 2090 return false; 2091 } 2092 2093 boolean createUserFolderIfNecessary(View newView, CellLayout target, 2094 int[] targetCell, boolean external, DragView dragView) { 2095 View v = target.getChildAt(targetCell[0], targetCell[1]); 2096 boolean hasntMoved = mDragInfo != null 2097 && (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]); 2098 2099 if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; 2100 mCreateUserFolderOnDrop = false; 2101 final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(target); 2102 2103 boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); 2104 boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); 2105 2106 if (aboveShortcut && willBecomeShortcut) { 2107 ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); 2108 ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); 2109 // if the drag started here, we need to remove it from the workspace 2110 if (!external) { 2111 int fromScreen = mDragInfo.screen; 2112 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2113 sourceLayout.removeView(newView); 2114 } 2115 2116 Rect folderLocation = new Rect(); 2117 mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); 2118 target.removeView(v); 2119 2120 FolderIcon fi = mLauncher.addFolder(screen, targetCell[0], targetCell[1]); 2121 destInfo.cellX = -1; 2122 destInfo.cellY = -1; 2123 sourceInfo.cellX = -1; 2124 sourceInfo.cellY = -1; 2125 2126 fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation); 2127 return true; 2128 } 2129 return false; 2130 } 2131 2132 boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, 2133 DragObject d, boolean external) { 2134 View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); 2135 if (dropOverView instanceof FolderIcon) { 2136 FolderIcon fi = (FolderIcon) dropOverView; 2137 if (fi.acceptDrop(d.dragInfo)) { 2138 fi.onDrop(d); 2139 2140 // if the drag started here, we need to remove it from the workspace 2141 if (!external) { 2142 int fromScreen = mDragInfo.screen; 2143 CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen); 2144 sourceLayout.removeView(newView); 2145 } 2146 return true; 2147 } 2148 } 2149 return false; 2150 } 2151 2152 public void onDrop(DragObject d) { 2153 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, 2154 mDragViewVisualCenter); 2155 2156 // We want the point to be mapped to the dragTarget. 2157 if (mDragTargetLayout != null) { 2158 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2159 } 2160 2161 // When you are in customization mode and drag to a particular screen, make that the 2162 // new current/default screen, so any subsequent taps add items to that screen 2163 if (!mLauncher.isAllAppsVisible()) { 2164 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2165 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2166 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2167 } 2168 } 2169 CellLayout dropTargetLayout = mDragTargetLayout; 2170 2171 if (d.dragSource != this) { 2172 final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], 2173 (int) mDragViewVisualCenter[1] }; 2174 onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); 2175 } else if (mDragInfo != null) { 2176 final View cell = mDragInfo.cell; 2177 2178 if (dropTargetLayout != null) { 2179 // Move internally 2180 final int screen = (mTargetCell[0] < 0) ? 2181 mDragInfo.screen : indexOfChild(dropTargetLayout); 2182 2183 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2184 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2185 // First we find the cell nearest to point at which the item is 2186 // dropped, without any consideration to whether there is an item there. 2187 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) 2188 mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); 2189 // If the item being dropped is a shortcut and the nearest drop 2190 // cell also contains a shortcut, then create a folder with the two shortcuts. 2191 boolean dropInscrollArea = mCurrentPage != screen; 2192 2193 if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout, 2194 mTargetCell, false, d.dragView)) { 2195 return; 2196 } 2197 2198 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, d, false)) { 2199 return; 2200 } 2201 2202 // Aside from the special case where we're dropping a shortcut onto a shortcut, 2203 // we need to find the nearest cell location that is vacant 2204 mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0], 2205 (int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell, 2206 dropTargetLayout, mTargetCell); 2207 2208 if (dropInscrollArea && mShrinkState != ShrinkState.SPRING_LOADED) { 2209 snapToPage(screen); 2210 } 2211 2212 if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) { 2213 if (screen != mDragInfo.screen) { 2214 // Reparent the view 2215 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2216 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], mDragInfo.spanX, 2217 mDragInfo.spanY); 2218 } 2219 2220 2221 // update the item's position after drop 2222 final ItemInfo info = (ItemInfo) cell.getTag(); 2223 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2224 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2225 lp.cellX = mTargetCell[0]; 2226 lp.cellY = mTargetCell[1]; 2227 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2228 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2229 2230 if (cell instanceof LauncherAppWidgetHostView) { 2231 final CellLayout cellLayout = dropTargetLayout; 2232 // We post this call so that the widget has a chance to be placed 2233 // in its final location 2234 2235 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2236 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2237 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2238 final Runnable resizeRunnable = new Runnable() { 2239 public void run() { 2240 DragLayer dragLayer = mLauncher.getDragLayer(); 2241 dragLayer.addResizeFrame(info, hostView, cellLayout); 2242 } 2243 }; 2244 post(new Runnable() { 2245 public void run() { 2246 if (!isPageMoving()) { 2247 resizeRunnable.run(); 2248 } else { 2249 mDelayedResizeRunnable = resizeRunnable; 2250 } 2251 } 2252 }); 2253 } 2254 } 2255 2256 LauncherModel.moveItemInDatabase(mLauncher, info, 2257 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2258 lp.cellX, lp.cellY); 2259 } 2260 } 2261 2262 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2263 2264 // Prepare it to be animated into its new position 2265 // This must be called after the view has been re-parented 2266 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell); 2267 parent.onDropChild(cell); 2268 } 2269 } 2270 2271 public void getViewLocationRelativeToSelf(View v, int[] location) { 2272 getLocationInWindow(location); 2273 int x = location[0]; 2274 int y = location[1]; 2275 2276 v.getLocationInWindow(location); 2277 int vX = location[0]; 2278 int vY = location[1]; 2279 2280 location[0] = vX - x; 2281 location[1] = vY - y; 2282 } 2283 2284 public void onDragEnter(DragObject d) { 2285 if (mDragTargetLayout != null) { 2286 mDragTargetLayout.setIsDragOverlapping(false); 2287 mDragTargetLayout.onDragExit(); 2288 } 2289 mDragTargetLayout = getCurrentDropLayout(); 2290 mDragTargetLayout.setIsDragOverlapping(true); 2291 mDragTargetLayout.onDragEnter(); 2292 2293 // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we 2294 // don't need to show the outlines 2295 if (LauncherApplication.isScreenLarge()) { 2296 showOutlines(); 2297 } 2298 } 2299 2300 private void doDragExit(DragObject d) { 2301 // Clean up folders 2302 cleanupFolderCreation(d); 2303 2304 // Reset the scroll area and previous drag target 2305 onResetScrollArea(); 2306 2307 if (mDragTargetLayout != null) { 2308 mDragTargetLayout.setIsDragOverlapping(false); 2309 mDragTargetLayout.onDragExit(); 2310 } 2311 mLastDragOverView = null; 2312 2313 if (!mIsPageMoving) { 2314 hideOutlines(); 2315 } 2316 } 2317 2318 public void onDragExit(DragObject d) { 2319 doDragExit(d); 2320 } 2321 2322 public DropTarget getDropTargetDelegate(DragObject d) { 2323 return null; 2324 } 2325 2326 /** 2327 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2328 * in the returned structure related to the widgets that match the drop (or a null list if it is 2329 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2330 */ 2331 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2332 final LauncherModel model = mLauncher.getModel(); 2333 final ClipDescription desc = event.getClipDescription(); 2334 final int mimeTypeCount = desc.getMimeTypeCount(); 2335 for (int i = 0; i < mimeTypeCount; ++i) { 2336 final String mimeType = desc.getMimeType(i); 2337 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2338 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2339 } else { 2340 final List<WidgetMimeTypeHandlerData> widgets = 2341 model.resolveWidgetsForMimeType(mContext, mimeType); 2342 if (widgets.size() > 0) { 2343 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2344 } 2345 } 2346 } 2347 return null; 2348 } 2349 2350 /** 2351 * Global drag and drop handler 2352 */ 2353 @Override 2354 public boolean onDragEvent(DragEvent event) { 2355 final ClipDescription desc = event.getClipDescription(); 2356 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2357 final int[] pos = new int[2]; 2358 layout.getLocationOnScreen(pos); 2359 // We need to offset the drag coordinates to layout coordinate space 2360 final int x = (int) event.getX() - pos[0]; 2361 final int y = (int) event.getY() - pos[1]; 2362 2363 switch (event.getAction()) { 2364 case DragEvent.ACTION_DRAG_STARTED: { 2365 // Validate this drag 2366 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2367 if (test != null) { 2368 boolean isShortcut = (test.second == null); 2369 if (isShortcut) { 2370 // Check if we have enough space on this screen to add a new shortcut 2371 if (!layout.findCellForSpan(pos, 1, 1)) { 2372 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2373 Toast.LENGTH_SHORT).show(); 2374 return false; 2375 } 2376 } 2377 } else { 2378 // Show error message if we couldn't accept any of the items 2379 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2380 Toast.LENGTH_SHORT).show(); 2381 return false; 2382 } 2383 2384 // Create the drag outline 2385 // We need to add extra padding to the bitmap to make room for the glow effect 2386 final Canvas canvas = new Canvas(); 2387 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2388 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2389 2390 // Show the current page outlines to indicate that we can accept this drop 2391 showOutlines(); 2392 layout.setIsDragOccuring(true); 2393 layout.onDragEnter(); 2394 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2395 2396 return true; 2397 } 2398 case DragEvent.ACTION_DRAG_LOCATION: 2399 // Visualize the drop location 2400 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2401 return true; 2402 case DragEvent.ACTION_DROP: { 2403 // Try and add any shortcuts 2404 final LauncherModel model = mLauncher.getModel(); 2405 final ClipData data = event.getClipData(); 2406 2407 // We assume that the mime types are ordered in descending importance of 2408 // representation. So we enumerate the list of mime types and alert the 2409 // user if any widgets can handle the drop. Only the most preferred 2410 // representation will be handled. 2411 pos[0] = x; 2412 pos[1] = y; 2413 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2414 if (test != null) { 2415 final int index = test.first; 2416 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2417 final boolean isShortcut = (widgets == null); 2418 final String mimeType = desc.getMimeType(index); 2419 if (isShortcut) { 2420 final Intent intent = data.getItemAt(index).getIntent(); 2421 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2422 onDropExternal(new int[] { x, y }, info, layout, false); 2423 } else { 2424 if (widgets.size() == 1) { 2425 // If there is only one item, then go ahead and add and configure 2426 // that widget 2427 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2428 final PendingAddWidgetInfo createInfo = 2429 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2430 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2431 } else { 2432 // Show the widget picker dialog if there is more than one widget 2433 // that can handle this data type 2434 final InstallWidgetReceiver.WidgetListAdapter adapter = 2435 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2436 data, widgets, layout, mCurrentPage, pos); 2437 final AlertDialog.Builder builder = 2438 new AlertDialog.Builder(mContext); 2439 builder.setAdapter(adapter, adapter); 2440 builder.setCancelable(true); 2441 builder.setTitle(mContext.getString( 2442 R.string.external_drop_widget_pick_title)); 2443 builder.setIcon(R.drawable.ic_no_applications); 2444 builder.show(); 2445 } 2446 } 2447 } 2448 return true; 2449 } 2450 case DragEvent.ACTION_DRAG_ENDED: 2451 // Hide the page outlines after the drop 2452 layout.setIsDragOccuring(false); 2453 layout.onDragExit(); 2454 hideOutlines(); 2455 return true; 2456 } 2457 return super.onDragEvent(event); 2458 } 2459 2460 /* 2461 * 2462 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2463 * coordinate space. The argument xy is modified with the return result. 2464 * 2465 */ 2466 void mapPointFromSelfToChild(View v, float[] xy) { 2467 mapPointFromSelfToChild(v, xy, null); 2468 } 2469 2470 /* 2471 * 2472 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2473 * coordinate space. The argument xy is modified with the return result. 2474 * 2475 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2476 * computing it itself; we use this to avoid redundant matrix inversions in 2477 * findMatchingPageForDragOver 2478 * 2479 */ 2480 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2481 if (cachedInverseMatrix == null) { 2482 v.getMatrix().invert(mTempInverseMatrix); 2483 cachedInverseMatrix = mTempInverseMatrix; 2484 } 2485 xy[0] = xy[0] + mScrollX - v.getLeft(); 2486 xy[1] = xy[1] + mScrollY - v.getTop(); 2487 cachedInverseMatrix.mapPoints(xy); 2488 } 2489 2490 /* 2491 * 2492 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2493 * the parent View's coordinate space. The argument xy is modified with the return result. 2494 * 2495 */ 2496 void mapPointFromChildToSelf(View v, float[] xy) { 2497 v.getMatrix().mapPoints(xy); 2498 xy[0] -= (mScrollX - v.getLeft()); 2499 xy[1] -= (mScrollY - v.getTop()); 2500 } 2501 2502 static private float squaredDistance(float[] point1, float[] point2) { 2503 float distanceX = point1[0] - point2[0]; 2504 float distanceY = point2[1] - point2[1]; 2505 return distanceX * distanceX + distanceY * distanceY; 2506 } 2507 2508 /* 2509 * 2510 * Returns true if the passed CellLayout cl overlaps with dragView 2511 * 2512 */ 2513 boolean overlaps(CellLayout cl, DragView dragView, 2514 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2515 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2516 final float[] draggedItemTopLeft = mTempDragCoordinates; 2517 draggedItemTopLeft[0] = dragViewX; 2518 draggedItemTopLeft[1] = dragViewY; 2519 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2520 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2521 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2522 2523 // Transform the dragged item's top left coordinates 2524 // to the CellLayout's local coordinates 2525 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2526 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2527 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2528 2529 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2530 // Transform the dragged item's bottom right coordinates 2531 // to the CellLayout's local coordinates 2532 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2533 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2534 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2535 2536 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2537 float overlap = (overlapRegionRight - overlapRegionLeft) * 2538 (overlapRegionBottom - overlapRegionTop); 2539 if (overlap > 0) { 2540 return true; 2541 } 2542 } 2543 } 2544 return false; 2545 } 2546 2547 /* 2548 * 2549 * This method returns the CellLayout that is currently being dragged to. In order to drag 2550 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2551 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2552 * 2553 * Return null if no CellLayout is currently being dragged over 2554 * 2555 */ 2556 private CellLayout findMatchingPageForDragOver( 2557 DragView dragView, int originX, int originY, int offsetX, int offsetY, boolean exact) { 2558 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2559 // with the item being dragged and then choose the one that's closest to the touch point 2560 final int screenCount = getChildCount(); 2561 CellLayout bestMatchingScreen = null; 2562 float smallestDistSoFar = Float.MAX_VALUE; 2563 2564 for (int i = 0; i < screenCount; i++) { 2565 CellLayout cl = (CellLayout)getChildAt(i); 2566 2567 final float[] touchXy = mTempTouchCoordinates; 2568 touchXy[0] = originX + offsetX; 2569 touchXy[1] = originY + offsetY; 2570 2571 // Transform the touch coordinates to the CellLayout's local coordinates 2572 // If the touch point is within the bounds of the cell layout, we can return immediately 2573 cl.getMatrix().invert(mTempInverseMatrix); 2574 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2575 2576 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2577 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2578 return cl; 2579 } 2580 2581 if (!exact && overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2582 // Get the center of the cell layout in screen coordinates 2583 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2584 cellLayoutCenter[0] = cl.getWidth()/2; 2585 cellLayoutCenter[1] = cl.getHeight()/2; 2586 mapPointFromChildToSelf(cl, cellLayoutCenter); 2587 2588 touchXy[0] = originX + offsetX; 2589 touchXy[1] = originY + offsetY; 2590 2591 // Calculate the distance between the center of the CellLayout 2592 // and the touch point 2593 float dist = squaredDistance(touchXy, cellLayoutCenter); 2594 2595 if (dist < smallestDistSoFar) { 2596 smallestDistSoFar = dist; 2597 bestMatchingScreen = cl; 2598 } 2599 } 2600 } 2601 return bestMatchingScreen; 2602 } 2603 2604 // This is used to compute the visual center of the dragView. This point is then 2605 // used to visualize drop locations and determine where to drop an item. The idea is that 2606 // the visual center represents the user's interpretation of where the item is, and hence 2607 // is the appropriate point to use when determining drop location. 2608 private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, 2609 DragView dragView, float[] recycle) { 2610 float res[]; 2611 if (recycle == null) { 2612 res = new float[2]; 2613 } else { 2614 res = recycle; 2615 } 2616 2617 // First off, the drag view has been shifted in a way that is not represented in the 2618 // x and y values or the x/yOffsets. Here we account for that shift. 2619 x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2620 y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2621 2622 // These represent the visual top and left of drag view if a dragRect was provided. 2623 // If a dragRect was not provided, then they correspond to the actual view left and 2624 // top, as the dragRect is in that case taken to be the entire dragView. 2625 // R.dimen.dragViewOffsetY. 2626 int left = x - xOffset; 2627 int top = y - yOffset; 2628 2629 // In order to find the visual center, we shift by half the dragRect 2630 res[0] = left + dragView.getDragRegion().width() / 2; 2631 res[1] = top + dragView.getDragRegion().height() / 2; 2632 2633 return res; 2634 } 2635 2636 public void onDragOver(DragObject d) { 2637 // Skip drag over events while we are dragging over side pages 2638 if (mInScrollArea) return; 2639 if (mIsInUnshrinkAnimation) return; 2640 2641 CellLayout layout; 2642 ItemInfo item = (ItemInfo) d.dragInfo; 2643 2644 // Ensure that we have proper spans for the item that we are dropping 2645 if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); 2646 2647 // Identify whether we have dragged over a side page 2648 if (mIsSmall) { 2649 int left = d.x - d.xOffset; 2650 int top = d.y - d.yOffset; 2651 layout = findMatchingPageForDragOver(d.dragView, left, top, d.xOffset, d.yOffset, true); 2652 if (layout != mDragTargetLayout) { 2653 // Cancel all intermediate folder states 2654 cleanupFolderCreation(d); 2655 2656 if (mDragTargetLayout != null) { 2657 mDragTargetLayout.setIsDragOverlapping(false); 2658 mDragTargetLayout.onDragExit(); 2659 } 2660 mDragTargetLayout = layout; 2661 if (mDragTargetLayout != null) { 2662 mDragTargetLayout.setIsDragOverlapping(true); 2663 mDragTargetLayout.onDragEnter(); 2664 } else { 2665 mLastDragOverView = null; 2666 } 2667 2668 boolean isInSpringLoadedMode = (mShrinkState == ShrinkState.SPRING_LOADED); 2669 if (isInSpringLoadedMode) { 2670 mSpringLoadedDragController.setAlarm(mDragTargetLayout); 2671 } 2672 } 2673 } else { 2674 layout = getCurrentDropLayout(); 2675 if (layout != mDragTargetLayout) { 2676 if (mDragTargetLayout != null) { 2677 mDragTargetLayout.setIsDragOverlapping(false); 2678 mDragTargetLayout.onDragExit(); 2679 } 2680 mDragTargetLayout = layout; 2681 mDragTargetLayout.setIsDragOverlapping(true); 2682 mDragTargetLayout.onDragEnter(); 2683 } 2684 } 2685 2686 // Handle the drag over 2687 if (mDragTargetLayout != null) { 2688 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2689 2690 mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, 2691 d.dragView, mDragViewVisualCenter); 2692 2693 // We want the point to be mapped to the dragTarget. 2694 mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); 2695 ItemInfo info = (ItemInfo) d.dragInfo; 2696 2697 mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], 2698 (int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell); 2699 final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], 2700 mTargetCell[1]); 2701 2702 boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout, 2703 mTargetCell, false); 2704 boolean isOverFolder = dragOverView instanceof FolderIcon; 2705 if (dragOverView != mLastDragOverView) { 2706 cancelFolderCreation(); 2707 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2708 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2709 } 2710 } 2711 2712 if (userFolderPending && dragOverView != mLastDragOverView) { 2713 mFolderCreationAlarm.setOnAlarmListener(new 2714 FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1])); 2715 mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); 2716 } 2717 2718 if (dragOverView != mLastDragOverView && isOverFolder) { 2719 ((FolderIcon) dragOverView).onDragEnter(d.dragInfo); 2720 if (mDragTargetLayout != null) { 2721 mDragTargetLayout.clearDragOutlines(); 2722 } 2723 } 2724 mLastDragOverView = dragOverView; 2725 2726 if (!mCreateUserFolderOnDrop && !isOverFolder) { 2727 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2728 (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 2729 item.spanX, item.spanY); 2730 } 2731 } 2732 } 2733 2734 private void cleanupFolderCreation(DragObject d) { 2735 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2736 mDragFolderRingAnimator.animateToNaturalState(); 2737 } 2738 if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) { 2739 if (d != null) { 2740 ((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo); 2741 } 2742 } 2743 mFolderCreationAlarm.cancelAlarm(); 2744 } 2745 2746 private void cancelFolderCreation() { 2747 if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) { 2748 mDragFolderRingAnimator.animateToNaturalState(); 2749 } 2750 mCreateUserFolderOnDrop = false; 2751 mFolderCreationAlarm.cancelAlarm(); 2752 } 2753 2754 class FolderCreationAlarmListener implements OnAlarmListener { 2755 CellLayout layout; 2756 int cellX; 2757 int cellY; 2758 2759 public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { 2760 this.layout = layout; 2761 this.cellX = cellX; 2762 this.cellY = cellY; 2763 } 2764 2765 public void onAlarm(Alarm alarm) { 2766 if (mDragFolderRingAnimator == null) { 2767 mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); 2768 } 2769 mDragFolderRingAnimator.setCell(cellX, cellY); 2770 mDragFolderRingAnimator.setCellLayout(layout); 2771 mDragFolderRingAnimator.animateToAcceptState(); 2772 layout.showFolderAccept(mDragFolderRingAnimator); 2773 layout.clearDragOutlines(); 2774 mCreateUserFolderOnDrop = true; 2775 } 2776 } 2777 2778 @Override 2779 public void getHitRect(Rect outRect) { 2780 // We want the workspace to have the whole area of the display (it will find the correct 2781 // cell layout to drop to in the existing drag/drop logic. 2782 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2783 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2784 } 2785 2786 /** 2787 * Add the item specified by dragInfo to the given layout. 2788 * @return true if successful 2789 */ 2790 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2791 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2792 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2793 return true; 2794 } 2795 mLauncher.showOutOfSpaceMessage(); 2796 return false; 2797 } 2798 2799 private void onDropExternal(int[] touchXY, Object dragInfo, 2800 CellLayout cellLayout, boolean insertAtFirst) { 2801 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); 2802 } 2803 2804 /** 2805 * Drop an item that didn't originate on one of the workspace screens. 2806 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2807 * come from another app altogether. 2808 * 2809 * NOTE: This can also be called when we are outside of a drag event, when we want 2810 * to add an item to one of the workspace screens. 2811 */ 2812 private void onDropExternal(int[] touchXY, Object dragInfo, 2813 CellLayout cellLayout, boolean insertAtFirst, DragObject d) { 2814 int screen = indexOfChild(cellLayout); 2815 if (screen != mCurrentPage && mShrinkState != ShrinkState.SPRING_LOADED) { 2816 snapToPage(screen); 2817 } 2818 if (dragInfo instanceof PendingAddItemInfo) { 2819 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2820 // When dragging and dropping from customization tray, we deal with creating 2821 // widgets/shortcuts/folders in a slightly different way 2822 switch (info.itemType) { 2823 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2824 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2825 break; 2826 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2827 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2828 break; 2829 default: 2830 throw new IllegalStateException("Unknown item type: " + info.itemType); 2831 } 2832 cellLayout.onDragExit(); 2833 } else { 2834 // This is for other drag/drop cases, like dragging from All Apps 2835 ItemInfo info = (ItemInfo) dragInfo; 2836 View view = null; 2837 2838 switch (info.itemType) { 2839 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2840 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2841 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2842 // Came from all apps -- make a copy 2843 info = new ShortcutInfo((ApplicationInfo) info); 2844 } 2845 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2846 (ShortcutInfo) info); 2847 break; 2848 case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: 2849 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, 2850 (FolderInfo) info, mIconCache); 2851 break; 2852 default: 2853 throw new IllegalStateException("Unknown item type: " + info.itemType); 2854 } 2855 2856 int spanX = mDragInfo != null ? mDragInfo.spanX : 1; 2857 int spanY = mDragInfo != null ? mDragInfo.spanY : 1; 2858 // First we find the cell nearest to point at which the item is 2859 // dropped, without any consideration to whether there is an item there. 2860 if (touchXY != null) { 2861 mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, 2862 cellLayout, mTargetCell); 2863 if (createUserFolderIfNecessary(view, cellLayout, mTargetCell, true, d.dragView)) { 2864 return; 2865 } 2866 if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) { 2867 return; 2868 } 2869 } 2870 2871 if (touchXY != null) { 2872 // when dragging and dropping, just find the closest free spot 2873 mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null, 2874 cellLayout, mTargetCell); 2875 } else { 2876 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2877 } 2878 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2879 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2880 cellLayout.onDropChild(view); 2881 cellLayout.animateDrop(); 2882 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2883 cellLayout.getChildrenLayout().measureChild(view); 2884 2885 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2886 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2887 lp.cellX, lp.cellY); 2888 2889 if (d.dragView != null) { 2890 mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view); 2891 } 2892 } 2893 } 2894 2895 /** 2896 * Return the current {@link CellLayout}, correctly picking the destination 2897 * screen while a scroll is in progress. 2898 */ 2899 public CellLayout getCurrentDropLayout() { 2900 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2901 } 2902 2903 /** 2904 * Return the current CellInfo describing our current drag; this method exists 2905 * so that Launcher can sync this object with the correct info when the activity is created/ 2906 * destroyed 2907 * 2908 */ 2909 public CellLayout.CellInfo getDragInfo() { 2910 return mDragInfo; 2911 } 2912 2913 /** 2914 * Calculate the nearest cell where the given object would be dropped. 2915 * 2916 * pixelX and pixelY should be in the coordinate system of layout 2917 */ 2918 private int[] findNearestVacantArea(int pixelX, int pixelY, 2919 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2920 return layout.findNearestVacantArea( 2921 pixelX, pixelY, spanX, spanY, ignoreView, recycle); 2922 } 2923 2924 /** 2925 * Calculate the nearest cell where the given object would be dropped. 2926 * 2927 * pixelX and pixelY should be in the coordinate system of layout 2928 */ 2929 private int[] findNearestArea(int pixelX, int pixelY, 2930 int spanX, int spanY, CellLayout layout, int[] recycle) { 2931 return layout.findNearestArea( 2932 pixelX, pixelY, spanX, spanY, recycle); 2933 } 2934 2935 void setup(Launcher launcher, DragController dragController) { 2936 mLauncher = launcher; 2937 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2938 mDragController = dragController; 2939 } 2940 2941 /** 2942 * Called at the end of a drag which originated on the workspace. 2943 */ 2944 public void onDropCompleted(View target, DragObject d, boolean success) { 2945 if (success) { 2946 if (target != this && mDragInfo != null) { 2947 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2948 cellLayout.removeView(mDragInfo.cell); 2949 if (mDragInfo.cell instanceof DropTarget) { 2950 mDragController.removeDropTarget((DropTarget) mDragInfo.cell); 2951 } 2952 // final Object tag = mDragInfo.cell.getTag(); 2953 } 2954 } else if (mDragInfo != null) { 2955 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2956 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2957 // moved into DragController.cancelDrag(). 2958 doDragExit(null); 2959 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell); 2960 } 2961 mLauncher.unlockScreenOrientation(); 2962 mDragOutline = null; 2963 mDragInfo = null; 2964 } 2965 2966 @Override 2967 public void onDragViewVisible() { 2968 ((View) mDragInfo.cell).setVisibility(View.GONE); 2969 } 2970 2971 public boolean isDropEnabled() { 2972 return true; 2973 } 2974 2975 @Override 2976 protected void onRestoreInstanceState(Parcelable state) { 2977 super.onRestoreInstanceState(state); 2978 Launcher.setScreen(mCurrentPage); 2979 } 2980 2981 @Override 2982 public void scrollLeft() { 2983 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2984 super.scrollLeft(); 2985 } 2986 Folder openFolder = getOpenFolder(); 2987 if (openFolder != null) { 2988 openFolder.completeDragExit(); 2989 } 2990 } 2991 2992 @Override 2993 public void scrollRight() { 2994 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2995 super.scrollRight(); 2996 } 2997 Folder openFolder = getOpenFolder(); 2998 if (openFolder != null) { 2999 openFolder.completeDragExit(); 3000 } 3001 } 3002 3003 @Override 3004 public void onEnterScrollArea(int direction) { 3005 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3006 mInScrollArea = true; 3007 3008 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3009 final CellLayout layout = (CellLayout) getChildAt(page); 3010 cancelFolderCreation(); 3011 3012 if (layout != null) { 3013 // Exit the current layout and mark the overlapping layout 3014 if (mDragTargetLayout != null) { 3015 mDragTargetLayout.setIsDragOverlapping(false); 3016 mDragTargetLayout.onDragExit(); 3017 } 3018 mDragTargetLayout = layout; 3019 mDragTargetLayout.setIsDragOverlapping(true); 3020 3021 // Workspace is responsible for drawing the edge glow on adjacent pages, 3022 // so we need to redraw the workspace when this may have changed. 3023 invalidate(); 3024 } 3025 } 3026 } 3027 3028 @Override 3029 public void onExitScrollArea() { 3030 if (mInScrollArea) { 3031 if (mDragTargetLayout != null) { 3032 // Unmark the overlapping layout and re-enter the current layout 3033 mDragTargetLayout.setIsDragOverlapping(false); 3034 mDragTargetLayout = getCurrentDropLayout(); 3035 mDragTargetLayout.onDragEnter(); 3036 3037 // Workspace is responsible for drawing the edge glow on adjacent pages, 3038 // so we need to redraw the workspace when this may have changed. 3039 invalidate(); 3040 } 3041 mInScrollArea = false; 3042 } 3043 } 3044 3045 private void onResetScrollArea() { 3046 if (mDragTargetLayout != null) { 3047 // Unmark the overlapping layout 3048 mDragTargetLayout.setIsDragOverlapping(false); 3049 3050 // Workspace is responsible for drawing the edge glow on adjacent pages, 3051 // so we need to redraw the workspace when this may have changed. 3052 invalidate(); 3053 } 3054 mInScrollArea = false; 3055 } 3056 3057 public Folder getFolderForTag(Object tag) { 3058 final int screenCount = getChildCount(); 3059 for (int screen = 0; screen < screenCount; screen++) { 3060 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3061 int count = currentScreen.getChildCount(); 3062 for (int i = 0; i < count; i++) { 3063 View child = currentScreen.getChildAt(i); 3064 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3065 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3066 Folder f = (Folder) child; 3067 if (f.getInfo() == tag && f.getInfo().opened) { 3068 return f; 3069 } 3070 } 3071 } 3072 } 3073 return null; 3074 } 3075 3076 public View getViewForTag(Object tag) { 3077 int screenCount = getChildCount(); 3078 for (int screen = 0; screen < screenCount; screen++) { 3079 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3080 int count = currentScreen.getChildCount(); 3081 for (int i = 0; i < count; i++) { 3082 View child = currentScreen.getChildAt(i); 3083 if (child.getTag() == tag) { 3084 return child; 3085 } 3086 } 3087 } 3088 return null; 3089 } 3090 3091 void clearDropTargets() { 3092 final int screenCount = getChildCount(); 3093 3094 for (int i = 0; i < screenCount; i++) { 3095 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3096 final ViewGroup layout = layoutParent.getChildrenLayout(); 3097 int childCount = layout.getChildCount(); 3098 for (int j = 0; j < childCount; j++) { 3099 View v = layout.getChildAt(j); 3100 if (v instanceof DropTarget) { 3101 mDragController.removeDropTarget((DropTarget) v); 3102 } 3103 } 3104 } 3105 } 3106 3107 void removeItems(final ArrayList<ApplicationInfo> apps) { 3108 final int screenCount = getChildCount(); 3109 final PackageManager manager = getContext().getPackageManager(); 3110 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3111 3112 final HashSet<String> packageNames = new HashSet<String>(); 3113 final int appCount = apps.size(); 3114 for (int i = 0; i < appCount; i++) { 3115 packageNames.add(apps.get(i).componentName.getPackageName()); 3116 } 3117 3118 for (int i = 0; i < screenCount; i++) { 3119 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3120 final ViewGroup layout = layoutParent.getChildrenLayout(); 3121 3122 // Avoid ANRs by treating each screen separately 3123 post(new Runnable() { 3124 public void run() { 3125 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3126 childrenToRemove.clear(); 3127 3128 int childCount = layout.getChildCount(); 3129 for (int j = 0; j < childCount; j++) { 3130 final View view = layout.getChildAt(j); 3131 Object tag = view.getTag(); 3132 3133 if (tag instanceof ShortcutInfo) { 3134 final ShortcutInfo info = (ShortcutInfo) tag; 3135 final Intent intent = info.intent; 3136 final ComponentName name = intent.getComponent(); 3137 3138 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3139 for (String packageName: packageNames) { 3140 if (packageName.equals(name.getPackageName())) { 3141 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3142 childrenToRemove.add(view); 3143 } 3144 } 3145 } 3146 } else if (tag instanceof FolderInfo) { 3147 final FolderInfo info = (FolderInfo) tag; 3148 final ArrayList<ShortcutInfo> contents = info.contents; 3149 final int contentsCount = contents.size(); 3150 final ArrayList<ShortcutInfo> appsToRemoveFromFolder = 3151 new ArrayList<ShortcutInfo>(); 3152 3153 for (int k = 0; k < contentsCount; k++) { 3154 final ShortcutInfo appInfo = contents.get(k); 3155 final Intent intent = appInfo.intent; 3156 final ComponentName name = intent.getComponent(); 3157 3158 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3159 for (String packageName: packageNames) { 3160 if (packageName.equals(name.getPackageName())) { 3161 appsToRemoveFromFolder.add(appInfo); 3162 } 3163 } 3164 } 3165 } 3166 for (ShortcutInfo item: appsToRemoveFromFolder) { 3167 info.remove(item); 3168 LauncherModel.deleteItemFromDatabase(mLauncher, item); 3169 } 3170 } else if (tag instanceof LauncherAppWidgetInfo) { 3171 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3172 final AppWidgetProviderInfo provider = 3173 widgets.getAppWidgetInfo(info.appWidgetId); 3174 if (provider != null) { 3175 for (String packageName: packageNames) { 3176 if (packageName.equals(provider.provider.getPackageName())) { 3177 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3178 childrenToRemove.add(view); 3179 } 3180 } 3181 } 3182 } 3183 } 3184 3185 childCount = childrenToRemove.size(); 3186 for (int j = 0; j < childCount; j++) { 3187 View child = childrenToRemove.get(j); 3188 // Note: We can not remove the view directly from CellLayoutChildren as this 3189 // does not re-mark the spaces as unoccupied. 3190 layoutParent.removeViewInLayout(child); 3191 if (child instanceof DropTarget) { 3192 mDragController.removeDropTarget((DropTarget)child); 3193 } 3194 } 3195 3196 if (childCount > 0) { 3197 layout.requestLayout(); 3198 layout.invalidate(); 3199 } 3200 } 3201 }); 3202 } 3203 } 3204 3205 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3206 final int screenCount = getChildCount(); 3207 for (int i = 0; i < screenCount; i++) { 3208 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3209 int childCount = layout.getChildCount(); 3210 for (int j = 0; j < childCount; j++) { 3211 final View view = layout.getChildAt(j); 3212 Object tag = view.getTag(); 3213 if (tag instanceof ShortcutInfo) { 3214 ShortcutInfo info = (ShortcutInfo)tag; 3215 // We need to check for ACTION_MAIN otherwise getComponent() might 3216 // return null for some shortcuts (for instance, for shortcuts to 3217 // web pages.) 3218 final Intent intent = info.intent; 3219 final ComponentName name = intent.getComponent(); 3220 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3221 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3222 final int appCount = apps.size(); 3223 for (int k = 0; k < appCount; k++) { 3224 ApplicationInfo app = apps.get(k); 3225 if (app.componentName.equals(name)) { 3226 info.setIcon(mIconCache.getIcon(info.intent)); 3227 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3228 new FastBitmapDrawable(info.getIcon(mIconCache)), 3229 null, null); 3230 } 3231 } 3232 } 3233 } 3234 } 3235 } 3236 } 3237 3238 void moveToDefaultScreen(boolean animate) { 3239 if (mIsSmall || mIsInUnshrinkAnimation) { 3240 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3241 } else if (animate) { 3242 snapToPage(mDefaultPage); 3243 } else { 3244 setCurrentPage(mDefaultPage); 3245 } 3246 getChildAt(mDefaultPage).requestFocus(); 3247 } 3248 3249 @Override 3250 public void syncPages() { 3251 } 3252 3253 @Override 3254 public void syncPageItems(int page) { 3255 } 3256 3257 @Override 3258 protected String getCurrentPageDescription() { 3259 int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; 3260 return String.format(mContext.getString(R.string.workspace_scroll_format), 3261 page + 1, getChildCount()); 3262 } 3263 3264 public void getLocationInDragLayer(int[] loc) { 3265 mLauncher.getDragLayer().getLocationInDragLayer(this, loc); 3266 } 3267} 3268