Workspace.java revision f4ffdc63d3d5b400174624f5bb8c41c7ed17265b
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 com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.PropertyValuesHolder; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Matrix; 48import android.graphics.Paint; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.IBinder; 55import android.os.Parcelable; 56import android.util.AttributeSet; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TextView; 65import android.widget.Toast; 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 @SuppressWarnings({"UnusedDeclaration"}) 79 private static final String TAG = "Launcher.Workspace"; 80 81 // This is how much the workspace shrinks when we enter all apps or 82 // customization mode 83 private static final float SHRINK_FACTOR = 0.16f; 84 85 // How much the screens shrink when we enter spring loaded drag mode 86 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 87 88 // Y rotation to apply to the workspace screens 89 private static final float WORKSPACE_ROTATION = 12.5f; 90 91 // These are extra scale factors to apply to the mini home screens 92 // so as to achieve the desired transform 93 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 94 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 95 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 96 97 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 99 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 100 101 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 102 private static final int BACKGROUND_FADE_IN_DURATION = 350; 103 104 // These animators are used to fade the children's outlines 105 private ObjectAnimator mChildrenOutlineFadeInAnimation; 106 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 107 private float mChildrenOutlineAlpha = 0; 108 109 // These properties refer to the background protection gradient used for AllApps and Customize 110 private ObjectAnimator mBackgroundFadeInAnimation; 111 private ObjectAnimator mBackgroundFadeOutAnimation; 112 private Drawable mBackground; 113 private Drawable mCustomizeTrayBackground; 114 private boolean mDrawCustomizeTrayBackground; 115 private float mBackgroundAlpha = 0; 116 private float mOverScrollMaxBackgroundAlpha = 0.0f; 117 private int mOverScrollPageIndex = -1; 118 119 private View mCustomizationDrawer; 120 private View mCustomizationDrawerContent; 121 private int[] mCustomizationDrawerPos = new int[2]; 122 private float[] mCustomizationDrawerTransformedPos = new float[2]; 123 124 private final WallpaperManager mWallpaperManager; 125 126 private int mDefaultPage; 127 128 private boolean mPageMoving = false; 129 private boolean mIsDragInProcess = false; 130 131 /** 132 * CellInfo for the cell that is currently being dragged 133 */ 134 private CellLayout.CellInfo mDragInfo; 135 136 /** 137 * Target drop area calculated during last acceptDrop call. 138 */ 139 private int[] mTargetCell = null; 140 141 /** 142 * The CellLayout that is currently being dragged over 143 */ 144 private CellLayout mDragTargetLayout = null; 145 146 private Launcher mLauncher; 147 private IconCache mIconCache; 148 private DragController mDragController; 149 150 // These are temporary variables to prevent having to allocate a new object just to 151 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 152 private int[] mTempCell = new int[2]; 153 private int[] mTempEstimate = new int[2]; 154 private float[] mTempOriginXY = new float[2]; 155 private float[] mTempDragCoordinates = new float[2]; 156 private float[] mTempTouchCoordinates = new float[2]; 157 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 158 private float[] mTempDragBottomRightCoordinates = new float[2]; 159 private Matrix mTempInverseMatrix = new Matrix(); 160 161 private SpringLoadedDragController mSpringLoadedDragController; 162 163 private static final int DEFAULT_CELL_COUNT_X = 4; 164 private static final int DEFAULT_CELL_COUNT_Y = 4; 165 166 private Drawable mPreviousIndicator; 167 private Drawable mNextIndicator; 168 169 // State variable that indicates whether the pages are small (ie when you're 170 // in all apps or customize mode) 171 private boolean mIsSmall = false; 172 private boolean mIsInUnshrinkAnimation = false; 173 private AnimatorListener mShrinkAnimationListener; 174 private AnimatorListener mUnshrinkAnimationListener; 175 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 176 private ShrinkState mShrinkState; 177 private boolean mWasSpringLoadedOnDragExit = false; 178 private boolean mWaitingToShrink = false; 179 private ShrinkState mWaitingToShrinkState; 180 private AnimatorSet mAnimator; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 /** If mInScrollArea is true, the direction of the scroll. */ 186 private int mPendingScrollDirection = DragController.SCROLL_NONE; 187 188 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 189 private Bitmap mDragOutline = null; 190 private final Rect mTempRect = new Rect(); 191 private final int[] mTempXY = new int[2]; 192 193 private ValueAnimator mDropAnim = null; 194 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 195 private View mDropView = null; 196 private int[] mDropViewPos = new int[] { -1, -1 }; 197 198 // Paint used to draw external drop outline 199 private final Paint mExternalDragOutlinePaint = new Paint(); 200 201 // Camera and Matrix used to determine the final position of a neighboring CellLayout 202 private final Matrix mMatrix = new Matrix(); 203 private final Camera mCamera = new Camera(); 204 private final float mTempFloat2[] = new float[2]; 205 206 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 207 int mWallpaperWidth; 208 int mWallpaperHeight; 209 float mTargetHorizontalWallpaperOffset = 0.0f; 210 float mTargetVerticalWallpaperOffset = 0.5f; 211 float mHorizontalWallpaperOffset = 0.0f; 212 float mVerticalWallpaperOffset = 0.5f; 213 long mLastWallpaperOffsetUpdateTime; 214 boolean mWallpaperOffsetDirty; 215 boolean mUpdateWallpaperOffsetImmediately = false; 216 217 /** 218 * Used to inflate the Workspace from XML. 219 * 220 * @param context The application's context. 221 * @param attrs The attributes set containing the Workspace's customization values. 222 */ 223 public Workspace(Context context, AttributeSet attrs) { 224 this(context, attrs, 0); 225 } 226 227 /** 228 * Used to inflate the Workspace from XML. 229 * 230 * @param context The application's context. 231 * @param attrs The attributes set containing the Workspace's customization values. 232 * @param defStyle Unused. 233 */ 234 public Workspace(Context context, AttributeSet attrs, int defStyle) { 235 super(context, attrs, defStyle); 236 mContentIsRefreshable = false; 237 238 if (!LauncherApplication.isScreenXLarge()) { 239 mFadeInAdjacentScreens = false; 240 } 241 242 mWallpaperManager = WallpaperManager.getInstance(context); 243 244 TypedArray a = context.obtainStyledAttributes(attrs, 245 R.styleable.Workspace, defStyle, 0); 246 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 247 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 248 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 249 a.recycle(); 250 251 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 252 setHapticFeedbackEnabled(false); 253 254 initWorkspace(); 255 } 256 257 /** 258 * Initializes various states for this workspace. 259 */ 260 protected void initWorkspace() { 261 Context context = getContext(); 262 mCurrentPage = mDefaultPage; 263 Launcher.setScreen(mCurrentPage); 264 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 265 mIconCache = app.getIconCache(); 266 mExternalDragOutlinePaint.setAntiAlias(true); 267 setWillNotDraw(false); 268 269 try { 270 final Resources res = getResources(); 271 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 272 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 273 } catch (Resources.NotFoundException e) { 274 // In this case, we will skip drawing background protection 275 } 276 277 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 278 @Override 279 public void onAnimationStart(Animator animation) { 280 mIsInUnshrinkAnimation = true; 281 disableCacheUpdates(); 282 } 283 @Override 284 public void onAnimationEnd(Animator animation) { 285 mIsInUnshrinkAnimation = false; 286 if (mShrinkState != ShrinkState.SPRING_LOADED) { 287 mDrawCustomizeTrayBackground = false; 288 } 289 enableCacheUpdates(); 290 mAnimator = null; 291 } 292 }; 293 mShrinkAnimationListener = new AnimatorListenerAdapter() { 294 @Override 295 public void onAnimationStart(Animator animation) { 296 disableCacheUpdates(); 297 } 298 @Override 299 public void onAnimationEnd(Animator animation) { 300 enableCacheUpdates(); 301 mAnimator = null; 302 } 303 }; 304 mSnapVelocity = 600; 305 } 306 307 @Override 308 protected int getScrollMode() { 309 if (LauncherApplication.isScreenXLarge()) { 310 return SmoothPagedView.X_LARGE_MODE; 311 } else { 312 return SmoothPagedView.DEFAULT_MODE; 313 } 314 } 315 316 @Override 317 public void addView(View child, int index, LayoutParams params) { 318 if (!(child instanceof CellLayout)) { 319 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 320 } 321 ((CellLayout) child).setOnInterceptTouchListener(this); 322 super.addView(child, index, params); 323 } 324 325 @Override 326 public void addView(View child) { 327 if (!(child instanceof CellLayout)) { 328 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 329 } 330 ((CellLayout) child).setOnInterceptTouchListener(this); 331 super.addView(child); 332 } 333 334 @Override 335 public void addView(View child, int index) { 336 if (!(child instanceof CellLayout)) { 337 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 338 } 339 ((CellLayout) child).setOnInterceptTouchListener(this); 340 super.addView(child, index); 341 } 342 343 @Override 344 public void addView(View child, int width, int height) { 345 if (!(child instanceof CellLayout)) { 346 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 347 } 348 ((CellLayout) child).setOnInterceptTouchListener(this); 349 super.addView(child, width, height); 350 } 351 352 @Override 353 public void addView(View child, LayoutParams params) { 354 if (!(child instanceof CellLayout)) { 355 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 356 } 357 ((CellLayout) child).setOnInterceptTouchListener(this); 358 super.addView(child, params); 359 } 360 361 /** 362 * @return The open folder on the current screen, or null if there is none 363 */ 364 Folder getOpenFolder() { 365 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 366 int count = currentPage.getChildCount(); 367 for (int i = 0; i < count; i++) { 368 View child = currentPage.getChildAt(i); 369 if (child instanceof Folder) { 370 Folder folder = (Folder) child; 371 if (folder.getInfo().opened) 372 return folder; 373 } 374 } 375 return null; 376 } 377 378 ArrayList<Folder> getOpenFolders() { 379 final int screenCount = getChildCount(); 380 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 381 382 for (int screen = 0; screen < screenCount; screen++) { 383 CellLayout currentPage = (CellLayout) getChildAt(screen); 384 int count = currentPage.getChildCount(); 385 for (int i = 0; i < count; i++) { 386 View child = currentPage.getChildAt(i); 387 if (child instanceof Folder) { 388 Folder folder = (Folder) child; 389 if (folder.getInfo().opened) 390 folders.add(folder); 391 break; 392 } 393 } 394 } 395 return folders; 396 } 397 398 boolean isDefaultPageShowing() { 399 return mCurrentPage == mDefaultPage; 400 } 401 402 /** 403 * Adds the specified child in the specified screen. The position and dimension of 404 * the child are defined by x, y, spanX and spanY. 405 * 406 * @param child The child to add in one of the workspace's screens. 407 * @param screen The screen in which to add the child. 408 * @param x The X position of the child in the screen's grid. 409 * @param y The Y position of the child in the screen's grid. 410 * @param spanX The number of cells spanned horizontally by the child. 411 * @param spanY The number of cells spanned vertically by the child. 412 */ 413 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 414 addInScreen(child, screen, x, y, spanX, spanY, false); 415 } 416 417 void addInFullScreen(View child, int screen) { 418 addInScreen(child, screen, 0, 0, -1, -1); 419 } 420 421 /** 422 * Adds the specified child in the specified screen. The position and dimension of 423 * the child are defined by x, y, spanX and spanY. 424 * 425 * @param child The child to add in one of the workspace's screens. 426 * @param screen The screen in which to add the child. 427 * @param x The X position of the child in the screen's grid. 428 * @param y The Y position of the child in the screen's grid. 429 * @param spanX The number of cells spanned horizontally by the child. 430 * @param spanY The number of cells spanned vertically by the child. 431 * @param insert When true, the child is inserted at the beginning of the children list. 432 */ 433 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 434 if (screen < 0 || screen >= getChildCount()) { 435 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 436 + " (was " + screen + "); skipping child"); 437 return; 438 } 439 440 final CellLayout group = (CellLayout) getChildAt(screen); 441 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 442 if (lp == null) { 443 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 444 } else { 445 lp.cellX = x; 446 lp.cellY = y; 447 lp.cellHSpan = spanX; 448 lp.cellVSpan = spanY; 449 } 450 451 // Get the canonical child id to uniquely represent this view in this screen 452 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 453 boolean markCellsAsOccupied = !(child instanceof Folder); 454 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 455 // TODO: This branch occurs when the workspace is adding views 456 // outside of the defined grid 457 // maybe we should be deleting these items from the LauncherModel? 458 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 459 } 460 461 if (!(child instanceof Folder)) { 462 child.setHapticFeedbackEnabled(false); 463 child.setOnLongClickListener(mLongClickListener); 464 } 465 if (child instanceof DropTarget) { 466 mDragController.addDropTarget((DropTarget) child); 467 } 468 } 469 470 public boolean onTouch(View v, MotionEvent event) { 471 // this is an intercepted event being forwarded from a cell layout 472 if (mIsSmall || mIsInUnshrinkAnimation) { 473 // Only allow clicks on a CellLayout if it is visible 474 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 475 mLauncher.onWorkspaceClick((CellLayout) v); 476 } 477 return true; 478 } else if (!mPageMoving) { 479 if (v == getChildAt(mCurrentPage - 1)) { 480 snapToPage(mCurrentPage - 1); 481 return true; 482 } else if (v == getChildAt(mCurrentPage + 1)) { 483 snapToPage(mCurrentPage + 1); 484 return true; 485 } 486 } 487 return false; 488 } 489 490 protected void onWindowVisibilityChanged (int visibility) { 491 mLauncher.onWindowVisibilityChanged(visibility); 492 } 493 494 @Override 495 public boolean dispatchUnhandledMove(View focused, int direction) { 496 if (mIsSmall || mIsInUnshrinkAnimation) { 497 // when the home screens are shrunken, shouldn't allow side-scrolling 498 return false; 499 } 500 return super.dispatchUnhandledMove(focused, direction); 501 } 502 503 @Override 504 public boolean onInterceptTouchEvent(MotionEvent ev) { 505 if (mIsSmall || mIsInUnshrinkAnimation) { 506 if (mLauncher.isAllAppsVisible() && 507 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 508 // Intercept this event so we can show the workspace in full view 509 // when it is clicked on and it is small 510 return true; 511 } 512 return false; 513 } 514 return super.onInterceptTouchEvent(ev); 515 } 516 517 @Override 518 protected void determineScrollingStart(MotionEvent ev) { 519 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 520 } 521 522 protected void onPageBeginMoving() { 523 if (mNextPage != INVALID_PAGE) { 524 // we're snapping to a particular screen 525 enableChildrenCache(mCurrentPage, mNextPage); 526 } else { 527 // this is when user is actively dragging a particular screen, they might 528 // swipe it either left or right (but we won't advance by more than one screen) 529 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 530 } 531 showOutlines(); 532 mPageMoving = true; 533 } 534 535 protected void onPageEndMoving() { 536 clearChildrenCache(); 537 // Hide the outlines, as long as we're not dragging 538 if (!mDragController.dragging()) { 539 hideOutlines(); 540 } 541 mOverScrollMaxBackgroundAlpha = 0.0f; 542 mOverScrollPageIndex = -1; 543 mPageMoving = false; 544 } 545 546 @Override 547 protected void notifyPageSwitchListener() { 548 super.notifyPageSwitchListener(); 549 550 if (mPreviousIndicator != null) { 551 // if we know the next page, we show the indication for it right away; it looks 552 // weird if the indicators are lagging 553 int page = mNextPage; 554 if (page == INVALID_PAGE) { 555 page = mCurrentPage; 556 } 557 mPreviousIndicator.setLevel(page); 558 mNextIndicator.setLevel(page); 559 } 560 Launcher.setScreen(mCurrentPage); 561 }; 562 563 // As a ratio of screen height, the total distance we want the parallax effect to span 564 // vertically 565 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 566 return 1.1f; 567 } 568 569 // As a ratio of screen height, the total distance we want the parallax effect to span 570 // horizontally 571 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 572 float aspectRatio = width / (float) height; 573 574 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 575 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 576 // We will use these two data points to extrapolate how much the wallpaper parallax effect 577 // to span (ie travel) at any aspect ratio: 578 579 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 580 final float ASPECT_RATIO_PORTRAIT = 10/16f; 581 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 582 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 583 584 // To find out the desired width at different aspect ratios, we use the following two 585 // formulas, where the coefficient on x is the aspect ratio (width/height): 586 // (16/10)x + y = 1.5 587 // (10/16)x + y = 1.2 588 // We solve for x and y and end up with a final formula: 589 final float x = 590 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 591 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 592 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 593 return x * aspectRatio + y; 594 } 595 596 // The range of scroll values for Workspace 597 private int getScrollRange() { 598 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 599 } 600 601 protected void setWallpaperDimension() { 602 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 603 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 604 final int minDim = Math.min(display.getWidth(), display.getHeight()); 605 606 // We need to ensure that there is enough extra space in the wallpaper for the intended 607 // parallax effects 608 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 609 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 610 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 611 } 612 613 public void setVerticalWallpaperOffset(WallpaperVerticalOffset offsetPosition) { 614 float offset = 0.5f; 615 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 616 int wallpaperTravelHeight = (int) (display.getHeight() * 617 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 618 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 619 switch (offsetPosition) { 620 case TOP: 621 offset = 0.5f - offsetFromCenter; 622 break; 623 case MIDDLE: 624 offset = 0.5f; 625 break; 626 case BOTTOM: 627 offset = 0.5f + offsetFromCenter; 628 break; 629 } 630 mTargetVerticalWallpaperOffset = offset; 631 mWallpaperOffsetDirty = true; 632 } 633 634 private void updateHorizontalWallpaperOffset() { 635 if (LauncherApplication.isScreenXLarge()) { 636 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 637 // The wallpaper travel width is how far, from left to right, the wallpaper will move 638 // at this orientation (for example, in portrait mode we don't move all the way to the 639 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 640 int wallpaperTravelWidth = (int) (display.getWidth() * 641 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 642 643 // Account for overscroll: you only see the absolute edge of the wallpaper if 644 // you overscroll as far as you can in landscape mode 645 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 646 float overscrollRatio = overscrollOffset / (float) getScrollRange(); 647 int scrollRangeWithOverscroll = getScrollRange() + 2 * overscrollOffset; 648 649 // Set wallpaper offset steps (1 / (number of screens - 1)) 650 // We have 3 vertical offset states (centered, and then top/bottom aligned 651 // for all apps/customize) 652 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 653 654 float scrollProgress = 655 mScrollX / (float) scrollRangeWithOverscroll + overscrollRatio; 656 float offsetInDips = wallpaperTravelWidth * scrollProgress + 657 (mWallpaperWidth - wallpaperTravelWidth) / 2; 658 float offset = offsetInDips / (float) mWallpaperWidth; 659 660 mTargetHorizontalWallpaperOffset = Math.max(0f, Math.min(offset, 1.0f)); 661 mWallpaperOffsetDirty = true; 662 } 663 } 664 665 public void updateWallpaperOffsetImmediately() { 666 mUpdateWallpaperOffsetImmediately = true; 667 } 668 669 private void updateWallpaperOffsets(boolean immediate) { 670 long currentTime = System.currentTimeMillis(); 671 long millisecondsSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 672 millisecondsSinceLastUpdate = Math.min((long) (1000/30f), millisecondsSinceLastUpdate); 673 millisecondsSinceLastUpdate = Math.min(1L, millisecondsSinceLastUpdate); 674 final float PERCENT_TO_CATCH_UP_IN_100_MS_HORIZONTAL = 25f; 675 final float PERCENT_TO_CATCH_UP_IN_100_MS_VERTICAL = 25f; 676 final float UPDATE_THRESHOLD = 0.0001f; 677 float hOffsetDelta = mTargetHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 678 float vOffsetDelta = mTargetVerticalWallpaperOffset - mVerticalWallpaperOffset; 679 boolean stopUpdating = 680 Math.abs(hOffsetDelta / mTargetHorizontalWallpaperOffset) < UPDATE_THRESHOLD && 681 Math.abs(vOffsetDelta / mTargetVerticalWallpaperOffset) < UPDATE_THRESHOLD; 682 683 if (stopUpdating || immediate) { 684 mHorizontalWallpaperOffset = mTargetHorizontalWallpaperOffset; 685 mVerticalWallpaperOffset = mTargetVerticalWallpaperOffset; 686 } else { 687 float percentToCatchUpVertical = 688 millisecondsSinceLastUpdate / 100f * PERCENT_TO_CATCH_UP_IN_100_MS_VERTICAL; 689 float percentToCatchUpHorizontal = 690 millisecondsSinceLastUpdate / 100f * PERCENT_TO_CATCH_UP_IN_100_MS_HORIZONTAL; 691 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 692 mVerticalWallpaperOffset += 693 percentToCatchUpVertical * (mTargetVerticalWallpaperOffset - mVerticalWallpaperOffset); 694 } 695 IBinder token = getWindowToken(); 696 if (token != null) { 697 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 698 mHorizontalWallpaperOffset, mVerticalWallpaperOffset); 699 } 700 if (!stopUpdating && !immediate) { 701 invalidate(); 702 mWallpaperOffsetDirty = true; 703 } 704 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 705 } 706 707 @Override 708 public void computeScroll() { 709 super.computeScroll(); 710 updateHorizontalWallpaperOffset(); 711 } 712 713 public void showOutlines() { 714 if (!mIsSmall && !mIsInUnshrinkAnimation) { 715 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 716 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 717 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 718 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 719 mChildrenOutlineFadeInAnimation.start(); 720 } 721 } 722 723 public void hideOutlines() { 724 if (!mIsSmall && !mIsInUnshrinkAnimation) { 725 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 726 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 727 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 728 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 729 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 730 mChildrenOutlineFadeOutAnimation.start(); 731 } 732 } 733 734 public void setChildrenOutlineAlpha(float alpha) { 735 mChildrenOutlineAlpha = alpha; 736 for (int i = 0; i < getChildCount(); i++) { 737 CellLayout cl = (CellLayout) getChildAt(i); 738 cl.setBackgroundAlpha(alpha); 739 } 740 } 741 742 public float getChildrenOutlineAlpha() { 743 return mChildrenOutlineAlpha; 744 } 745 746 private void showBackgroundGradientForAllApps() { 747 showBackgroundGradient(); 748 mDrawCustomizeTrayBackground = false; 749 } 750 751 private void showBackgroundGradientForCustomizeTray() { 752 showBackgroundGradient(); 753 mDrawCustomizeTrayBackground = true; 754 } 755 756 private void showBackgroundGradient() { 757 if (mBackground == null) return; 758 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 759 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 760 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 761 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 762 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 763 mBackgroundFadeInAnimation.start(); 764 } 765 766 private void hideBackgroundGradient() { 767 if (mBackground == null) return; 768 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 769 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 770 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 771 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 772 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 773 mBackgroundFadeOutAnimation.start(); 774 } 775 776 public void setBackgroundAlpha(float alpha) { 777 mBackgroundAlpha = alpha; 778 invalidate(); 779 } 780 781 public float getBackgroundAlpha() { 782 return mBackgroundAlpha; 783 } 784 785 /** 786 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 787 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 788 * as being larger. This method computes what offset the rotated view should be translated 789 * in order to minimize this perceived gap. 790 * @param degrees Angle of the view 791 * @param width Width of the view 792 * @param height Height of the view 793 * @return Offset to be used in a View.setTranslationX() call 794 */ 795 private float getOffsetXForRotation(float degrees, int width, int height) { 796 mMatrix.reset(); 797 mCamera.save(); 798 mCamera.rotateY(Math.abs(degrees)); 799 mCamera.getMatrix(mMatrix); 800 mCamera.restore(); 801 802 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 803 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 804 mTempFloat2[0] = width; 805 mTempFloat2[1] = height; 806 mMatrix.mapPoints(mTempFloat2); 807 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 808 } 809 810 float backgroundAlphaInterpolator(float r) { 811 float pivotA = 0.1f; 812 float pivotB = 0.4f; 813 if (r < pivotA) { 814 return 0; 815 } else if (r > pivotB) { 816 return 1.0f; 817 } else { 818 return (r - pivotA)/(pivotB - pivotA); 819 } 820 } 821 822 float overScrollBackgroundAlphaInterpolator(float r) { 823 float threshold = 0.08f; 824 825 if (r > mOverScrollMaxBackgroundAlpha) { 826 mOverScrollMaxBackgroundAlpha = r; 827 } else if (r < mOverScrollMaxBackgroundAlpha) { 828 r = mOverScrollMaxBackgroundAlpha; 829 } 830 831 return Math.min(r / threshold, 1.0f); 832 } 833 834 @Override 835 protected void screenScrolled(int screenCenter) { 836 final int halfScreenSize = getMeasuredWidth() / 2; 837 838 for (int i = 0; i < getChildCount(); i++) { 839 CellLayout cl = (CellLayout) getChildAt(i); 840 if (cl != null) { 841 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 842 int delta = screenCenter - (getChildOffset(i) - 843 getRelativeChildOffset(i) + halfScreenSize); 844 845 float scrollProgress = delta / (totalDistance * 1.0f); 846 scrollProgress = Math.min(scrollProgress, 1.0f); 847 scrollProgress = Math.max(scrollProgress, -1.0f); 848 849 // If the current page (i) is being overscrolled, we use a different 850 // set of rules for setting the background alpha multiplier. 851 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 852 i == getChildCount() -1 )) { 853 cl.setBackgroundAlphaMultiplier( 854 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 855 mOverScrollPageIndex = i; 856 } else if (mOverScrollPageIndex != i) { 857 cl.setBackgroundAlphaMultiplier( 858 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 859 860 } 861 862 float rotation = WORKSPACE_ROTATION * scrollProgress; 863 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 864 cl.setTranslationX(translationX); 865 866 cl.setRotationY(rotation); 867 } 868 } 869 } 870 871 protected void onAttachedToWindow() { 872 super.onAttachedToWindow(); 873 computeScroll(); 874 mDragController.setWindowToken(getWindowToken()); 875 } 876 877 @Override 878 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 879 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 880 mUpdateWallpaperOffsetImmediately = true; 881 } 882 super.onLayout(changed, left, top, right, bottom); 883 884 // if shrinkToBottom() is called on initialization, it has to be deferred 885 // until after the first call to onLayout so that it has the correct width 886 if (mWaitingToShrink) { 887 // shrink can trigger a synchronous onLayout call, so we 888 // post this to avoid a stack overflow / tangled onLayout calls 889 post(new Runnable() { 890 public void run() { 891 shrink(mWaitingToShrinkState, false); 892 mWaitingToShrink = false; 893 } 894 }); 895 } 896 897 if (LauncherApplication.isInPlaceRotationEnabled()) { 898 // When the device is rotated, the scroll position of the current screen 899 // needs to be refreshed 900 setCurrentPage(getCurrentPage()); 901 } 902 } 903 904 public void enableCacheUpdates() { 905 final int pageCount = getChildCount(); 906 for (int i = 0; i < pageCount; i++) { 907 final CellLayout page = (CellLayout) getChildAt(i); 908 page.enableCacheUpdates(); 909 } 910 } 911 912 public void disableCacheUpdates() { 913 final int pageCount = getChildCount(); 914 for (int i = 0; i < pageCount; i++) { 915 final CellLayout page = (CellLayout) getChildAt(i); 916 page.disableCacheUpdates(); 917 } 918 } 919 920 @Override 921 protected void onDraw(Canvas canvas) { 922 if (mWallpaperOffsetDirty) { 923 updateWallpaperOffsets(mUpdateWallpaperOffsetImmediately); 924 mWallpaperOffsetDirty = false; 925 mUpdateWallpaperOffsetImmediately = false; 926 } 927 928 // Draw the background gradient if necessary 929 if (mBackground != null && mBackgroundAlpha > 0.0f) { 930 int alpha = (int) (mBackgroundAlpha * 255); 931 if (mDrawCustomizeTrayBackground) { 932 // Find out where to offset the gradient for the customization tray content 933 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 934 final Matrix m = mCustomizationDrawer.getMatrix(); 935 mCustomizationDrawerTransformedPos[0] = 0.0f; 936 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 937 m.mapPoints(mCustomizationDrawerTransformedPos); 938 939 // Draw the bg glow behind the gradient 940 mCustomizeTrayBackground.setAlpha(alpha); 941 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 942 getMeasuredHeight()); 943 mCustomizeTrayBackground.draw(canvas); 944 945 // Draw the bg gradient 946 final int offset = (int) (mCustomizationDrawerPos[1] + 947 mCustomizationDrawerTransformedPos[1]); 948 mBackground.setAlpha(alpha); 949 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 950 offset + getMeasuredHeight()); 951 mBackground.draw(canvas); 952 } else { 953 mBackground.setAlpha(alpha); 954 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 955 getMeasuredHeight()); 956 mBackground.draw(canvas); 957 } 958 } 959 super.onDraw(canvas); 960 } 961 962 @Override 963 protected void dispatchDraw(Canvas canvas) { 964 if (mIsSmall || mIsInUnshrinkAnimation) { 965 // Draw all the workspaces if we're small 966 final int pageCount = getChildCount(); 967 final long drawingTime = getDrawingTime(); 968 for (int i = 0; i < pageCount; i++) { 969 final View page = (View) getChildAt(i); 970 971 drawChild(canvas, page, drawingTime); 972 } 973 } else { 974 super.dispatchDraw(canvas); 975 976 final int width = getWidth(); 977 final int height = getHeight(); 978 979 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 980 if (mInScrollArea && (height > width)) { 981 final int pageHeight = getChildAt(0).getHeight(); 982 983 // This determines the height of the glowing edge: 90% of the page height 984 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 985 986 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 987 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 988 989 if (leftPage != null && leftPage.getIsDragOverlapping()) { 990 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 991 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 992 d.draw(canvas); 993 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 994 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 995 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 996 d.draw(canvas); 997 } 998 } 999 1000 if (mDropView != null) { 1001 // We are animating an item that was just dropped on the home screen. 1002 // Render its View in the current animation position. 1003 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1004 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1005 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1006 canvas.translate(xPos, yPos); 1007 mDropView.draw(canvas); 1008 canvas.restore(); 1009 } 1010 } 1011 } 1012 1013 @Override 1014 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1015 if (!mLauncher.isAllAppsVisible()) { 1016 final Folder openFolder = getOpenFolder(); 1017 if (openFolder != null) { 1018 return openFolder.requestFocus(direction, previouslyFocusedRect); 1019 } else { 1020 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1021 } 1022 } 1023 return false; 1024 } 1025 1026 @Override 1027 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1028 if (!mLauncher.isAllAppsVisible()) { 1029 final Folder openFolder = getOpenFolder(); 1030 if (openFolder != null) { 1031 openFolder.addFocusables(views, direction); 1032 } else { 1033 super.addFocusables(views, direction, focusableMode); 1034 } 1035 } 1036 } 1037 1038 @Override 1039 public boolean dispatchTouchEvent(MotionEvent ev) { 1040 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1041 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1042 // ie when you click on a mini-screen, it zooms back to that screen) 1043 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1044 return false; 1045 } 1046 } 1047 1048 return super.dispatchTouchEvent(ev); 1049 } 1050 1051 void enableChildrenCache(int fromPage, int toPage) { 1052 if (fromPage > toPage) { 1053 final int temp = fromPage; 1054 fromPage = toPage; 1055 toPage = temp; 1056 } 1057 1058 final int screenCount = getChildCount(); 1059 1060 fromPage = Math.max(fromPage, 0); 1061 toPage = Math.min(toPage, screenCount - 1); 1062 1063 for (int i = fromPage; i <= toPage; i++) { 1064 final CellLayout layout = (CellLayout) getChildAt(i); 1065 layout.setChildrenDrawnWithCacheEnabled(true); 1066 layout.setChildrenDrawingCacheEnabled(true); 1067 } 1068 } 1069 1070 void clearChildrenCache() { 1071 final int screenCount = getChildCount(); 1072 for (int i = 0; i < screenCount; i++) { 1073 final CellLayout layout = (CellLayout) getChildAt(i); 1074 layout.setChildrenDrawnWithCacheEnabled(false); 1075 } 1076 } 1077 1078 @Override 1079 public boolean onTouchEvent(MotionEvent ev) { 1080 if (mLauncher.isAllAppsVisible()) { 1081 // Cancel any scrolling that is in progress. 1082 if (!mScroller.isFinished()) { 1083 mScroller.abortAnimation(); 1084 } 1085 setCurrentPage(mCurrentPage); 1086 1087 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1088 mLauncher.showWorkspace(true); 1089 // Let the events fall through to the CellLayouts because if they are not 1090 // hit, then we get a crash due to a missing ACTION_DOWN touch event 1091 } 1092 1093 return false; // We don't want the events 1094 } 1095 1096 return super.onTouchEvent(ev); 1097 } 1098 1099 @Override 1100 protected void onWallpaperTap(MotionEvent ev) { 1101 final int[] position = mTempCell; 1102 getLocationOnScreen(position); 1103 1104 int pointerIndex = ev.getActionIndex(); 1105 position[0] += (int) ev.getX(pointerIndex); 1106 position[1] += (int) ev.getY(pointerIndex); 1107 1108 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1109 ev.getAction() == MotionEvent.ACTION_UP 1110 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1111 position[0], position[1], 0, null); 1112 } 1113 1114 public boolean isSmall() { 1115 return mIsSmall; 1116 } 1117 1118 private float getYScaleForScreen(int screen) { 1119 int x = Math.abs(screen - 2); 1120 1121 // TODO: This should be generalized for use with arbitrary rotation angles. 1122 switch(x) { 1123 case 0: return EXTRA_SCALE_FACTOR_0; 1124 case 1: return EXTRA_SCALE_FACTOR_1; 1125 case 2: return EXTRA_SCALE_FACTOR_2; 1126 } 1127 return 1.0f; 1128 } 1129 1130 public void shrink(ShrinkState shrinkState) { 1131 shrink(shrinkState, true); 1132 } 1133 1134 // we use this to shrink the workspace for the all apps view and the customize view 1135 public void shrink(ShrinkState shrinkState, boolean animated) { 1136 if (mFirstLayout) { 1137 // (mFirstLayout == "first layout has not happened yet") 1138 // if we get a call to shrink() as part of our initialization (for example, if 1139 // Launcher is started in All Apps mode) then we need to wait for a layout call 1140 // to get our width so we can layout the mini-screen views correctly 1141 mWaitingToShrink = true; 1142 mWaitingToShrinkState = shrinkState; 1143 return; 1144 } 1145 mIsSmall = true; 1146 mShrinkState = shrinkState; 1147 1148 // Stop any scrolling, move to the current page right away 1149 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1150 if (!mIsDragInProcess) { 1151 updateWhichPagesAcceptDrops(mShrinkState); 1152 } 1153 1154 // we intercept and reject all touch events when we're small, so be sure to reset the state 1155 mTouchState = TOUCH_STATE_REST; 1156 mActivePointerId = INVALID_POINTER; 1157 1158 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1159 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1160 currentPage.setBackgroundAlpha(0.0f); 1161 } 1162 currentPage.setBackgroundAlphaMultiplier(1.0f); 1163 1164 final Resources res = getResources(); 1165 final int screenWidth = getWidth(); 1166 final int screenHeight = getHeight(); 1167 1168 // Making the assumption that all pages have the same width as the 0th 1169 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1170 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1171 1172 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1173 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1174 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1175 1176 final int screenCount = getChildCount(); 1177 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1178 1179 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1180 float newY = (isPortrait ? 1181 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1182 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1183 float finalAlpha = 1.0f; 1184 float extraShrinkFactor = 1.0f; 1185 1186 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1187 newY = screenHeight - newY - scaledPageHeight; 1188 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1189 1190 // We shrink and disappear to nothing in the case of all apps 1191 // (which is when we shrink to the bottom) 1192 newY = screenHeight - newY - scaledPageHeight; 1193 finalAlpha = 0.0f; 1194 } else if (shrinkState == ShrinkState.MIDDLE) { 1195 newY = screenHeight / 2 - scaledPageHeight / 2; 1196 finalAlpha = 1.0f; 1197 } else if (shrinkState == ShrinkState.TOP) { 1198 newY = (isPortrait ? 1199 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1200 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1201 } 1202 1203 int duration; 1204 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1205 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1206 } else { 1207 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1208 } 1209 1210 // We animate all the screens to the centered position in workspace 1211 // At the same time, the screens become greyed/dimmed 1212 1213 // newX is initialized to the left-most position of the centered screens 1214 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1215 1216 // We are going to scale about the center of the view, so we need to adjust the positions 1217 // of the views accordingly 1218 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1219 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1220 1221 if (mAnimator != null) { 1222 mAnimator.cancel(); 1223 } 1224 1225 mAnimator = new AnimatorSet(); 1226 for (int i = 0; i < screenCount; i++) { 1227 final CellLayout cl = (CellLayout) getChildAt(i); 1228 1229 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1230 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1231 float rotationScaleY = getYScaleForScreen(i); 1232 1233 if (animated) { 1234 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1235 PropertyValuesHolder.ofFloat("x", newX), 1236 PropertyValuesHolder.ofFloat("y", newY), 1237 PropertyValuesHolder.ofFloat("scaleX", 1238 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1239 PropertyValuesHolder.ofFloat("scaleY", 1240 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1241 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1242 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1243 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1244 1245 animWithInterpolator.setDuration(duration); 1246 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1247 mAnimator.playTogether(animWithInterpolator); 1248 } else { 1249 cl.setX((int)newX); 1250 cl.setY((int)newY); 1251 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1252 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1253 cl.setBackgroundAlpha(finalAlpha); 1254 cl.setAlpha(finalAlpha); 1255 cl.setRotationY(rotation); 1256 mShrinkAnimationListener.onAnimationEnd(null); 1257 } 1258 // increment newX for the next screen 1259 newX += scaledPageWidth + extraScaledSpacing; 1260 } 1261 setLayoutScale(1.0f); 1262 if (animated) { 1263 mAnimator.addListener(mShrinkAnimationListener); 1264 mAnimator.start(); 1265 } 1266 setChildrenDrawnWithCacheEnabled(true); 1267 1268 if (shrinkState == ShrinkState.TOP) { 1269 showBackgroundGradientForCustomizeTray(); 1270 } else { 1271 showBackgroundGradientForAllApps(); 1272 } 1273 } 1274 1275 /* 1276 * This interpolator emulates the rate at which the perceived scale of an object changes 1277 * as its distance from a camera increases. When this interpolator is applied to a scale 1278 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1279 * from the camera. 1280 */ 1281 static class ZInterpolator implements TimeInterpolator { 1282 private float focalLength; 1283 1284 public ZInterpolator(float foc) { 1285 focalLength = foc; 1286 } 1287 1288 public float getInterpolation(float input) { 1289 return (1.0f - focalLength / (focalLength + input)) / 1290 (1.0f - focalLength / (focalLength + 1.0f)); 1291 } 1292 } 1293 1294 /* 1295 * The exact reverse of ZInterpolator. 1296 */ 1297 static class InverseZInterpolator implements TimeInterpolator { 1298 private ZInterpolator zInterpolator; 1299 public InverseZInterpolator(float foc) { 1300 zInterpolator = new ZInterpolator(foc); 1301 } 1302 public float getInterpolation(float input) { 1303 return 1 - zInterpolator.getInterpolation(1 - input); 1304 } 1305 } 1306 1307 /* 1308 * ZInterpolator compounded with an ease-out. 1309 */ 1310 static class ZoomOutInterpolator implements TimeInterpolator { 1311 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1312 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1313 1314 public float getInterpolation(float input) { 1315 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1316 } 1317 } 1318 1319 /* 1320 * InvereZInterpolator compounded with an ease-out. 1321 */ 1322 static class ZoomInInterpolator implements TimeInterpolator { 1323 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1324 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1325 1326 public float getInterpolation(float input) { 1327 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1328 } 1329 } 1330 1331 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1332 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1333 1334 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1335 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1336 } 1337 1338 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1339 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1340 } 1341 1342 private void updateWhichPagesAcceptDropsHelper( 1343 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1344 final int screenCount = getChildCount(); 1345 for (int i = 0; i < screenCount; i++) { 1346 CellLayout cl = (CellLayout) getChildAt(i); 1347 cl.setIsDragOccuring(isDragHappening); 1348 switch (state) { 1349 case TOP: 1350 cl.setIsDefaultDropTarget(i == mCurrentPage); 1351 case BOTTOM_HIDDEN: 1352 case BOTTOM_VISIBLE: 1353 if (!isDragHappening) { 1354 // even if a drag isn't happening, we don't want to show a screen as 1355 // accepting drops if it doesn't have at least one free cell 1356 spanX = 1; 1357 spanY = 1; 1358 } 1359 // the page accepts drops if we can find at least one empty spot 1360 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1361 break; 1362 default: 1363 throw new RuntimeException( 1364 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1365 } 1366 } 1367 } 1368 1369 /* 1370 * 1371 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1372 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1373 * 1374 * These methods mark the appropriate pages as accepting drops (which alters their visual 1375 * appearance). 1376 * 1377 */ 1378 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1379 mIsDragInProcess = true; 1380 1381 final Canvas canvas = new Canvas(); 1382 1383 // We need to add extra padding to the bitmap to make room for the glow effect 1384 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1385 1386 // The outline is used to visualize where the item will land if dropped 1387 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1388 1389 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1390 } 1391 1392 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1393 // never dragged over 1394 public void onDragStopped() { 1395 mIsDragInProcess = false; 1396 updateWhichPagesAcceptDrops(mShrinkState); 1397 } 1398 1399 @Override 1400 protected boolean handlePagingClicks() { 1401 return true; 1402 } 1403 1404 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1405 public void unshrink(CellLayout clThatWasClicked) { 1406 unshrink(clThatWasClicked, false); 1407 } 1408 1409 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1410 int newCurrentPage = indexOfChild(clThatWasClicked); 1411 if (mIsSmall) { 1412 if (springLoaded) { 1413 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1414 } 1415 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1416 unshrink(true, springLoaded); 1417 } 1418 } 1419 1420 1421 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1422 mShrinkState = ShrinkState.SPRING_LOADED; 1423 unshrink(clThatWasClicked, true); 1424 mDragTargetLayout.onDragEnter(); 1425 } 1426 1427 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1428 shrink(shrinkState); 1429 if (mDragTargetLayout != null) { 1430 mDragTargetLayout.onDragExit(); 1431 } 1432 } 1433 1434 void unshrink(boolean animated) { 1435 unshrink(animated, false); 1436 } 1437 1438 void unshrink(boolean animated, boolean springLoaded) { 1439 mWaitingToShrink = false; 1440 if (mIsSmall) { 1441 float finalScaleFactor = 1.0f; 1442 float finalBackgroundAlpha = 0.0f; 1443 if (springLoaded) { 1444 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1445 finalBackgroundAlpha = 1.0f; 1446 } else { 1447 mIsSmall = false; 1448 } 1449 if (mAnimator != null) { 1450 mAnimator.cancel(); 1451 } 1452 1453 mAnimator = new AnimatorSet(); 1454 final int screenCount = getChildCount(); 1455 1456 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1457 for (int i = 0; i < screenCount; i++) { 1458 final CellLayout cl = (CellLayout)getChildAt(i); 1459 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1460 float finalAlphaMultiplierValue = 1461 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1462 0.0f : 1.0f; 1463 float rotation = 0.0f; 1464 1465 if (i < mCurrentPage) { 1466 rotation = WORKSPACE_ROTATION; 1467 } else if (i > mCurrentPage) { 1468 rotation = -WORKSPACE_ROTATION; 1469 } 1470 1471 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1472 1473 if (animated) { 1474 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1475 PropertyValuesHolder.ofFloat("translationX", translation), 1476 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1477 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1478 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1479 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1480 PropertyValuesHolder.ofFloat("backgroundAlphaMultiplier", 1481 finalAlphaMultiplierValue), 1482 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue)); 1483 animWithInterpolator.setDuration(duration); 1484 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1485 1486 ObjectAnimator rotationAnim = ObjectAnimator.ofPropertyValuesHolder(cl, 1487 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1488 rotationAnim.setDuration(duration); 1489 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1490 1491 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1492 } else { 1493 cl.setTranslationX(translation); 1494 cl.setTranslationY(0.0f); 1495 cl.setScaleX(finalScaleFactor); 1496 cl.setScaleY(finalScaleFactor); 1497 cl.setBackgroundAlpha(0.0f); 1498 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1499 cl.setAlpha(finalAlphaValue); 1500 cl.setRotationY(rotation); 1501 mUnshrinkAnimationListener.onAnimationEnd(null); 1502 } 1503 } 1504 1505 if (animated) { 1506 // If we call this when we're not animated, onAnimationEnd is never called on 1507 // the listener; make sure we only use the listener when we're actually animating 1508 mAnimator.addListener(mUnshrinkAnimationListener); 1509 mAnimator.start(); 1510 } 1511 } 1512 1513 if (!springLoaded) { 1514 hideBackgroundGradient(); 1515 } 1516 } 1517 1518 /** 1519 * Draw the View v into the given Canvas. 1520 * 1521 * @param v the view to draw 1522 * @param destCanvas the canvas to draw on 1523 * @param padding the horizontal and vertical padding to use when drawing 1524 */ 1525 private void drawDragView(View v, Canvas destCanvas, int padding) { 1526 final Rect clipRect = mTempRect; 1527 v.getDrawingRect(clipRect); 1528 1529 // For a TextView, adjust the clip rect so that we don't include the text label 1530 if (v instanceof BubbleTextView) { 1531 final BubbleTextView tv = (BubbleTextView) v; 1532 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1533 tv.getLayout().getLineTop(0); 1534 } else if (v instanceof TextView) { 1535 final TextView tv = (TextView) v; 1536 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1537 tv.getLayout().getLineTop(0); 1538 } 1539 1540 // Draw the View into the bitmap. 1541 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1542 // they set scrollX and scrollY to large values to achieve centered text 1543 1544 destCanvas.save(); 1545 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1546 destCanvas.clipRect(clipRect, Op.REPLACE); 1547 v.draw(destCanvas); 1548 destCanvas.restore(); 1549 } 1550 1551 /** 1552 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1553 * Responsibility for the bitmap is transferred to the caller. 1554 */ 1555 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1556 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1557 final Bitmap b = Bitmap.createBitmap( 1558 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1559 1560 canvas.setBitmap(b); 1561 drawDragView(v, canvas, padding); 1562 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1563 return b; 1564 } 1565 1566 /** 1567 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1568 * Responsibility for the bitmap is transferred to the caller. 1569 */ 1570 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1571 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1572 final Bitmap b = Bitmap.createBitmap( 1573 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1574 1575 canvas.setBitmap(b); 1576 canvas.drawBitmap(orig, 0, 0, new Paint()); 1577 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1578 1579 return b; 1580 } 1581 1582 /** 1583 * Creates a drag outline to represent a drop (that we don't have the actual information for 1584 * yet). May be changed in the future to alter the drop outline slightly depending on the 1585 * clip description mime data. 1586 */ 1587 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1588 Resources r = getResources(); 1589 final int outlineColor = r.getColor(R.color.drag_outline_color); 1590 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1591 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1592 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1593 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1594 final Bitmap b = Bitmap.createBitmap( 1595 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1596 1597 canvas.setBitmap(b); 1598 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1599 rectRadius, rectRadius, mExternalDragOutlinePaint); 1600 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1601 return b; 1602 } 1603 1604 /** 1605 * Returns a new bitmap to show when the given View is being dragged around. 1606 * Responsibility for the bitmap is transferred to the caller. 1607 */ 1608 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1609 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1610 final Bitmap b = Bitmap.createBitmap( 1611 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1612 1613 canvas.setBitmap(b); 1614 canvas.drawBitmap(mDragOutline, 0, 0, null); 1615 drawDragView(v, canvas, padding); 1616 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1617 1618 return b; 1619 } 1620 1621 void startDrag(CellLayout.CellInfo cellInfo) { 1622 View child = cellInfo.cell; 1623 1624 // Make sure the drag was started by a long press as opposed to a long click. 1625 if (!child.isInTouchMode()) { 1626 return; 1627 } 1628 1629 mDragInfo = cellInfo; 1630 1631 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 1632 current.onDragChild(child); 1633 1634 child.clearFocus(); 1635 child.setPressed(false); 1636 1637 final Canvas canvas = new Canvas(); 1638 1639 // We need to add extra padding to the bitmap to make room for the glow effect 1640 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1641 1642 // The outline is used to visualize where the item will land if dropped 1643 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1644 1645 // The drag bitmap follows the touch point around on the screen 1646 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1647 1648 final int bmpWidth = b.getWidth(); 1649 final int bmpHeight = b.getHeight(); 1650 child.getLocationOnScreen(mTempXY); 1651 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1652 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1653 mLauncher.lockScreenOrientation(); 1654 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1655 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1656 b.recycle(); 1657 } 1658 1659 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1660 boolean insertAtFirst, int intersectX, int intersectY) { 1661 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1662 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1663 1664 final int[] cellXY = new int[2]; 1665 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1666 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1667 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1668 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1669 cellXY[0], cellXY[1]); 1670 } 1671 1672 private void setPositionForDropAnimation( 1673 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1674 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1675 1676 // Based on the position of the drag view, find the top left of the original view 1677 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1678 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1679 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1680 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1681 1682 // Set its old pos (in the new parent's coordinates); it will be animated 1683 // in animateViewIntoPosition after the next layout pass 1684 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1685 lp.oldY = viewY - (parent.getTop() - mScrollY); 1686 } 1687 1688 /* 1689 * We should be careful that this method cannot result in any synchronous requestLayout() 1690 * calls, as it is called from onLayout(). 1691 */ 1692 public void animateViewIntoPosition(final View view) { 1693 final CellLayout parent = (CellLayout) view.getParent(); 1694 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1695 1696 // Convert the animation params to be relative to the Workspace, not the CellLayout 1697 final int fromX = lp.oldX + parent.getLeft(); 1698 final int fromY = lp.oldY + parent.getTop(); 1699 1700 final int dx = lp.x - lp.oldX; 1701 final int dy = lp.y - lp.oldY; 1702 1703 // Calculate the duration of the animation based on the object's distance 1704 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1705 final Resources res = getResources(); 1706 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1707 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1708 if (dist < maxDist) { 1709 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1710 } 1711 1712 if (mDropAnim != null) { 1713 mDropAnim.end(); 1714 } 1715 mDropAnim = new ValueAnimator(); 1716 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1717 1718 // The view is invisible during the animation; we render it manually. 1719 mDropAnim.addListener(new AnimatorListenerAdapter() { 1720 public void onAnimationStart(Animator animation) { 1721 // Set this here so that we don't render it until the animation begins 1722 mDropView = view; 1723 } 1724 1725 public void onAnimationEnd(Animator animation) { 1726 if (mDropView != null) { 1727 mDropView.setVisibility(View.VISIBLE); 1728 mDropView = null; 1729 } 1730 } 1731 }); 1732 1733 mDropAnim.setDuration(duration); 1734 mDropAnim.setFloatValues(0.0f, 1.0f); 1735 mDropAnim.removeAllUpdateListeners(); 1736 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1737 public void onAnimationUpdate(ValueAnimator animation) { 1738 final float percent = (Float) animation.getAnimatedValue(); 1739 // Invalidate the old position 1740 invalidate(mDropViewPos[0], mDropViewPos[1], 1741 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1742 1743 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1744 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1745 invalidate(mDropViewPos[0], mDropViewPos[1], 1746 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1747 } 1748 }); 1749 1750 mDropAnim.start(); 1751 } 1752 1753 /** 1754 * {@inheritDoc} 1755 */ 1756 public boolean acceptDrop(DragSource source, int x, int y, 1757 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1758 1759 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1760 if (source != this) { 1761 // Don't accept the drop if we're not over a screen at time of drop 1762 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1763 return false; 1764 } 1765 1766 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1767 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1768 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1769 1770 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1771 1772 // Don't accept the drop if there's no room for the item 1773 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1774 mLauncher.showOutOfSpaceMessage(); 1775 return false; 1776 } 1777 } 1778 return true; 1779 } 1780 1781 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1782 DragView dragView, Object dragInfo) { 1783 1784 int originX = x - xOffset; 1785 int originY = y - yOffset; 1786 1787 if (mIsSmall || mIsInUnshrinkAnimation) { 1788 // get originX and originY in the local coordinate system of the screen 1789 mTempOriginXY[0] = originX; 1790 mTempOriginXY[1] = originY; 1791 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1792 originX = (int)mTempOriginXY[0]; 1793 originY = (int)mTempOriginXY[1]; 1794 } 1795 1796 // When you drag to a particular screen, make that the new current/default screen, so any 1797 // subsequent taps add items to that screen 1798 int dragTargetIndex = indexOfChild(mDragTargetLayout); 1799 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 1800 moveToNewPageWithoutMovingCellLayouts(dragTargetIndex); 1801 } 1802 1803 if (source != this) { 1804 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1805 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1806 } else { 1807 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1808 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1809 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1810 } 1811 } else if (mDragInfo != null) { 1812 final View cell = mDragInfo.cell; 1813 CellLayout dropTargetLayout = mDragTargetLayout; 1814 1815 // Handle the case where the user drops when in the scroll area. 1816 // This is treated as a drop on the adjacent page. 1817 if (dropTargetLayout == null && mInScrollArea) { 1818 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1819 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1820 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1821 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1822 } 1823 } 1824 1825 if (dropTargetLayout != null) { 1826 // Move internally 1827 mTargetCell = findNearestVacantArea(originX, originY, 1828 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1829 mTargetCell); 1830 1831 final int screen = (mTargetCell == null) ? 1832 mDragInfo.screen : indexOfChild(dropTargetLayout); 1833 1834 if (screen != mCurrentPage) { 1835 snapToPage(screen); 1836 } 1837 1838 if (mTargetCell != null) { 1839 if (screen != mDragInfo.screen) { 1840 // Reparent the view 1841 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1842 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1843 mDragInfo.spanX, mDragInfo.spanY); 1844 } 1845 1846 // update the item's position after drop 1847 final ItemInfo info = (ItemInfo) cell.getTag(); 1848 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1849 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1850 lp.cellX = mTargetCell[0]; 1851 lp.cellY = mTargetCell[1]; 1852 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1853 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1854 1855 LauncherModel.moveItemInDatabase(mLauncher, info, 1856 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1857 lp.cellX, lp.cellY); 1858 } 1859 } 1860 1861 final CellLayout parent = (CellLayout) cell.getParent(); 1862 1863 // Prepare it to be animated into its new position 1864 // This must be called after the view has been re-parented 1865 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1866 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1867 parent.onDropChild(cell, animateDrop); 1868 } 1869 } 1870 1871 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1872 int yOffset, DragView dragView, Object dragInfo) { 1873 mDragTargetLayout = null; // Reset the drag state 1874 1875 if (!mIsSmall) { 1876 mDragTargetLayout = getCurrentDropLayout(); 1877 mDragTargetLayout.onDragEnter(); 1878 showOutlines(); 1879 } 1880 } 1881 1882 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1883 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1884 1885 if (mIsSmall || mIsInUnshrinkAnimation) { 1886 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1887 return null; 1888 } 1889 // We may need to delegate the drag to a child view. If a 1x1 item 1890 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1891 // then drag events should be handled by that child. 1892 1893 ItemInfo item = (ItemInfo)dragInfo; 1894 CellLayout currentLayout = getCurrentDropLayout(); 1895 1896 int dragPointX, dragPointY; 1897 if (item.spanX == 1 && item.spanY == 1) { 1898 // For a 1x1, calculate the drop cell exactly as in onDragOver 1899 dragPointX = x - xOffset; 1900 dragPointY = y - yOffset; 1901 } else { 1902 // Otherwise, use the exact drag coordinates 1903 dragPointX = x; 1904 dragPointY = y; 1905 } 1906 dragPointX += mScrollX - currentLayout.getLeft(); 1907 dragPointY += mScrollY - currentLayout.getTop(); 1908 1909 // If we are dragging over a cell that contains a DropTarget that will 1910 // accept the drop, delegate to that DropTarget. 1911 final int[] cellXY = mTempCell; 1912 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1913 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1914 if (child instanceof DropTarget) { 1915 DropTarget target = (DropTarget)child; 1916 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1917 return target; 1918 } 1919 } 1920 return null; 1921 } 1922 1923 /** 1924 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1925 * in the returned structure related to the widgets that match the drop (or a null list if it is 1926 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1927 */ 1928 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1929 final LauncherModel model = mLauncher.getModel(); 1930 final ClipDescription desc = event.getClipDescription(); 1931 final int mimeTypeCount = desc.getMimeTypeCount(); 1932 for (int i = 0; i < mimeTypeCount; ++i) { 1933 final String mimeType = desc.getMimeType(i); 1934 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1935 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1936 } else { 1937 final List<WidgetMimeTypeHandlerData> widgets = 1938 model.resolveWidgetsForMimeType(mContext, mimeType); 1939 if (widgets.size() > 0) { 1940 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1941 } 1942 } 1943 } 1944 return null; 1945 } 1946 1947 /** 1948 * Global drag and drop handler 1949 */ 1950 @Override 1951 public boolean onDragEvent(DragEvent event) { 1952 final ClipDescription desc = event.getClipDescription(); 1953 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1954 final int[] pos = new int[2]; 1955 layout.getLocationOnScreen(pos); 1956 // We need to offset the drag coordinates to layout coordinate space 1957 final int x = (int) event.getX() - pos[0]; 1958 final int y = (int) event.getY() - pos[1]; 1959 1960 switch (event.getAction()) { 1961 case DragEvent.ACTION_DRAG_STARTED: { 1962 // Validate this drag 1963 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1964 if (test != null) { 1965 boolean isShortcut = (test.second == null); 1966 if (isShortcut) { 1967 // Check if we have enough space on this screen to add a new shortcut 1968 if (!layout.findCellForSpan(pos, 1, 1)) { 1969 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1970 Toast.LENGTH_SHORT).show(); 1971 return false; 1972 } 1973 } 1974 } else { 1975 // Show error message if we couldn't accept any of the items 1976 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1977 Toast.LENGTH_SHORT).show(); 1978 return false; 1979 } 1980 1981 // Create the drag outline 1982 // We need to add extra padding to the bitmap to make room for the glow effect 1983 final Canvas canvas = new Canvas(); 1984 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1985 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1986 1987 // Show the current page outlines to indicate that we can accept this drop 1988 showOutlines(); 1989 layout.setIsDragOccuring(true); 1990 layout.onDragEnter(); 1991 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1992 1993 return true; 1994 } 1995 case DragEvent.ACTION_DRAG_LOCATION: 1996 // Visualize the drop location 1997 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1998 return true; 1999 case DragEvent.ACTION_DROP: { 2000 // Try and add any shortcuts 2001 final LauncherModel model = mLauncher.getModel(); 2002 final ClipData data = event.getClipData(); 2003 2004 // We assume that the mime types are ordered in descending importance of 2005 // representation. So we enumerate the list of mime types and alert the 2006 // user if any widgets can handle the drop. Only the most preferred 2007 // representation will be handled. 2008 pos[0] = x; 2009 pos[1] = y; 2010 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2011 if (test != null) { 2012 final int index = test.first; 2013 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2014 final boolean isShortcut = (widgets == null); 2015 final String mimeType = desc.getMimeType(index); 2016 if (isShortcut) { 2017 final Intent intent = data.getItemAt(index).getIntent(); 2018 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2019 onDropExternal(x, y, info, layout, false); 2020 } else { 2021 if (widgets.size() == 1) { 2022 // If there is only one item, then go ahead and add and configure 2023 // that widget 2024 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2025 final PendingAddWidgetInfo createInfo = 2026 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2027 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2028 } else { 2029 // Show the widget picker dialog if there is more than one widget 2030 // that can handle this data type 2031 final InstallWidgetReceiver.WidgetListAdapter adapter = 2032 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2033 data, widgets, layout, mCurrentPage, pos); 2034 final AlertDialog.Builder builder = 2035 new AlertDialog.Builder(mContext); 2036 builder.setAdapter(adapter, adapter); 2037 builder.setCancelable(true); 2038 builder.setTitle(mContext.getString( 2039 R.string.external_drop_widget_pick_title)); 2040 builder.setIcon(R.drawable.ic_no_applications); 2041 builder.show(); 2042 } 2043 } 2044 } 2045 return true; 2046 } 2047 case DragEvent.ACTION_DRAG_ENDED: 2048 // Hide the page outlines after the drop 2049 layout.setIsDragOccuring(false); 2050 layout.onDragExit(); 2051 hideOutlines(); 2052 return true; 2053 } 2054 return super.onDragEvent(event); 2055 } 2056 2057 /* 2058 * 2059 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2060 * coordinate space. The argument xy is modified with the return result. 2061 * 2062 */ 2063 void mapPointFromSelfToChild(View v, float[] xy) { 2064 mapPointFromSelfToChild(v, xy, null); 2065 } 2066 2067 /* 2068 * 2069 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2070 * coordinate space. The argument xy is modified with the return result. 2071 * 2072 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2073 * computing it itself; we use this to avoid redundant matrix inversions in 2074 * findMatchingPageForDragOver 2075 * 2076 */ 2077 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2078 if (cachedInverseMatrix == null) { 2079 v.getMatrix().invert(mTempInverseMatrix); 2080 cachedInverseMatrix = mTempInverseMatrix; 2081 } 2082 xy[0] = xy[0] + mScrollX - v.getLeft(); 2083 xy[1] = xy[1] + mScrollY - v.getTop(); 2084 cachedInverseMatrix.mapPoints(xy); 2085 } 2086 2087 /* 2088 * 2089 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2090 * the parent View's coordinate space. The argument xy is modified with the return result. 2091 * 2092 */ 2093 void mapPointFromChildToSelf(View v, float[] xy) { 2094 v.getMatrix().mapPoints(xy); 2095 xy[0] -= (mScrollX - v.getLeft()); 2096 xy[1] -= (mScrollY - v.getTop()); 2097 } 2098 2099 static private float squaredDistance(float[] point1, float[] point2) { 2100 float distanceX = point1[0] - point2[0]; 2101 float distanceY = point2[1] - point2[1]; 2102 return distanceX * distanceX + distanceY * distanceY; 2103 } 2104 2105 /* 2106 * 2107 * Returns true if the passed CellLayout cl overlaps with dragView 2108 * 2109 */ 2110 boolean overlaps(CellLayout cl, DragView dragView, 2111 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2112 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2113 final float[] draggedItemTopLeft = mTempDragCoordinates; 2114 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 2115 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 2116 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2117 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 2118 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 2119 2120 // Transform the dragged item's top left coordinates 2121 // to the CellLayout's local coordinates 2122 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2123 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2124 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2125 2126 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2127 // Transform the dragged item's bottom right coordinates 2128 // to the CellLayout's local coordinates 2129 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2130 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2131 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2132 2133 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2134 float overlap = (overlapRegionRight - overlapRegionLeft) * 2135 (overlapRegionBottom - overlapRegionTop); 2136 if (overlap > 0) { 2137 return true; 2138 } 2139 } 2140 } 2141 return false; 2142 } 2143 2144 /* 2145 * 2146 * This method returns the CellLayout that is currently being dragged to. In order to drag 2147 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2148 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2149 * 2150 * Return null if no CellLayout is currently being dragged over 2151 * 2152 */ 2153 private CellLayout findMatchingPageForDragOver( 2154 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2155 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2156 // with the item being dragged and then choose the one that's closest to the touch point 2157 final int screenCount = getChildCount(); 2158 CellLayout bestMatchingScreen = null; 2159 float smallestDistSoFar = Float.MAX_VALUE; 2160 2161 for (int i = 0; i < screenCount; i++) { 2162 CellLayout cl = (CellLayout)getChildAt(i); 2163 2164 final float[] touchXy = mTempTouchCoordinates; 2165 touchXy[0] = originX + offsetX; 2166 touchXy[1] = originY + offsetY; 2167 2168 // Transform the touch coordinates to the CellLayout's local coordinates 2169 // If the touch point is within the bounds of the cell layout, we can return immediately 2170 cl.getMatrix().invert(mTempInverseMatrix); 2171 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2172 2173 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2174 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2175 return cl; 2176 } 2177 2178 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2179 // Get the center of the cell layout in screen coordinates 2180 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2181 cellLayoutCenter[0] = cl.getWidth()/2; 2182 cellLayoutCenter[1] = cl.getHeight()/2; 2183 mapPointFromChildToSelf(cl, cellLayoutCenter); 2184 2185 touchXy[0] = originX + offsetX; 2186 touchXy[1] = originY + offsetY; 2187 2188 // Calculate the distance between the center of the CellLayout 2189 // and the touch point 2190 float dist = squaredDistance(touchXy, cellLayoutCenter); 2191 2192 if (dist < smallestDistSoFar) { 2193 smallestDistSoFar = dist; 2194 bestMatchingScreen = cl; 2195 } 2196 } 2197 } 2198 return bestMatchingScreen; 2199 } 2200 2201 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2202 DragView dragView, Object dragInfo) { 2203 // When touch is inside the scroll area, skip dragOver actions for the current screen 2204 if (!mInScrollArea) { 2205 CellLayout layout; 2206 int originX = x - xOffset; 2207 int originY = y - yOffset; 2208 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2209 if (shrunken) { 2210 layout = findMatchingPageForDragOver( 2211 dragView, originX, originY, xOffset, yOffset); 2212 2213 if (layout != mDragTargetLayout) { 2214 if (mDragTargetLayout != null) { 2215 mDragTargetLayout.setIsDragOverlapping(false); 2216 mSpringLoadedDragController.onDragExit(); 2217 } 2218 mDragTargetLayout = layout; 2219 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2220 mDragTargetLayout.setIsDragOverlapping(true); 2221 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2222 } 2223 } 2224 } else { 2225 layout = getCurrentDropLayout(); 2226 if (layout != mDragTargetLayout) { 2227 if (mDragTargetLayout != null) { 2228 mDragTargetLayout.onDragExit(); 2229 } 2230 layout.onDragEnter(); 2231 mDragTargetLayout = layout; 2232 } 2233 } 2234 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2235 layout = getCurrentDropLayout(); 2236 2237 final ItemInfo item = (ItemInfo)dragInfo; 2238 if (dragInfo instanceof LauncherAppWidgetInfo) { 2239 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2240 2241 if (widgetInfo.spanX == -1) { 2242 // Calculate the grid spans needed to fit this widget 2243 int[] spans = layout.rectToCell( 2244 widgetInfo.minWidth, widgetInfo.minHeight, null); 2245 item.spanX = spans[0]; 2246 item.spanY = spans[1]; 2247 } 2248 } 2249 2250 if (source instanceof AllAppsPagedView) { 2251 // This is a hack to fix the point used to determine which cell an icon from 2252 // the all apps screen is over 2253 if (item != null && item.spanX == 1 && layout != null) { 2254 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2255 2256 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2257 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2258 dragView.setDragRegion(dragView.getDragRegionLeft(), 2259 dragView.getDragRegionTop(), 2260 layout.getCellWidth(), 2261 dragView.getDragRegionHeight()); 2262 } 2263 } 2264 } else if (source == this) { 2265 // When dragging from the workspace, the drag view is slightly bigger than 2266 // the original view, and offset vertically. Adjust to account for this. 2267 final View origView = mDragInfo.cell; 2268 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2269 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2270 + dragView.getOffsetY(); 2271 } 2272 2273 if (mDragTargetLayout != null) { 2274 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2275 float[] localOrigin = { originX, originY }; 2276 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2277 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2278 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2279 } 2280 } 2281 } 2282 } 2283 2284 public void onDragExit(DragSource source, int x, int y, int xOffset, 2285 int yOffset, DragView dragView, Object dragInfo) { 2286 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2287 if (mDragTargetLayout != null) { 2288 mDragTargetLayout.onDragExit(); 2289 } 2290 if (!mIsPageMoving) { 2291 hideOutlines(); 2292 } 2293 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2294 mLauncher.exitSpringLoadedDragMode(); 2295 } 2296 clearAllHovers(); 2297 } 2298 2299 @Override 2300 public void getHitRect(Rect outRect) { 2301 // We want the workspace to have the whole area of the display (it will find the correct 2302 // cell layout to drop to in the existing drag/drop logic. 2303 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2304 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2305 } 2306 2307 /** 2308 * Add the item specified by dragInfo to the given layout. 2309 * @return true if successful 2310 */ 2311 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2312 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2313 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2314 return true; 2315 } 2316 mLauncher.showOutOfSpaceMessage(); 2317 return false; 2318 } 2319 2320 /** 2321 * Drop an item that didn't originate on one of the workspace screens. 2322 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2323 * come from another app altogether. 2324 * 2325 * NOTE: This can also be called when we are outside of a drag event, when we want 2326 * to add an item to one of the workspace screens. 2327 */ 2328 private void onDropExternal(int x, int y, Object dragInfo, 2329 CellLayout cellLayout, boolean insertAtFirst) { 2330 int screen = indexOfChild(cellLayout); 2331 if (dragInfo instanceof PendingAddItemInfo) { 2332 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2333 // When dragging and dropping from customization tray, we deal with creating 2334 // widgets/shortcuts/folders in a slightly different way 2335 // Only set touchXY if you are supporting spring loaded adding of items 2336 int[] touchXY = new int[2]; 2337 touchXY[0] = x; 2338 touchXY[1] = y; 2339 switch (info.itemType) { 2340 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2341 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2342 break; 2343 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2344 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2345 break; 2346 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2347 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2348 break; 2349 default: 2350 throw new IllegalStateException("Unknown item type: " + info.itemType); 2351 } 2352 cellLayout.onDragExit(); 2353 } else { 2354 // This is for other drag/drop cases, like dragging from All Apps 2355 ItemInfo info = (ItemInfo) dragInfo; 2356 View view = null; 2357 2358 switch (info.itemType) { 2359 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2360 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2361 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2362 // Came from all apps -- make a copy 2363 info = new ShortcutInfo((ApplicationInfo) info); 2364 } 2365 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2366 (ShortcutInfo) info); 2367 break; 2368 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2369 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2370 cellLayout, (UserFolderInfo) info, mIconCache); 2371 break; 2372 default: 2373 throw new IllegalStateException("Unknown item type: " + info.itemType); 2374 } 2375 2376 mTargetCell = new int[2]; 2377 if (x != -1 && y != -1) { 2378 // when dragging and dropping, just find the closest free spot 2379 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2380 } else { 2381 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2382 } 2383 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2384 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2385 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2386 cellLayout.onDropChild(view, animateDrop); 2387 cellLayout.animateDrop(); 2388 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2389 2390 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2391 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2392 lp.cellX, lp.cellY); 2393 } 2394 } 2395 2396 /** 2397 * Return the current {@link CellLayout}, correctly picking the destination 2398 * screen while a scroll is in progress. 2399 */ 2400 private CellLayout getCurrentDropLayout() { 2401 // if we're currently small, use findMatchingPageForDragOver instead 2402 if (mIsSmall) return null; 2403 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2404 return (CellLayout) getChildAt(index); 2405 } 2406 2407 /** 2408 * Return the current CellInfo describing our current drag; this method exists 2409 * so that Launcher can sync this object with the correct info when the activity is created/ 2410 * destroyed 2411 * 2412 */ 2413 public CellLayout.CellInfo getDragInfo() { 2414 return mDragInfo; 2415 } 2416 2417 /** 2418 * Calculate the nearest cell where the given object would be dropped. 2419 */ 2420 private int[] findNearestVacantArea(int pixelX, int pixelY, 2421 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2422 2423 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2424 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2425 2426 // Find the best target drop location 2427 return layout.findNearestVacantArea( 2428 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2429 } 2430 2431 void setLauncher(Launcher launcher) { 2432 mLauncher = launcher; 2433 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2434 2435 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2436 if (mCustomizationDrawer != null) { 2437 mCustomizationDrawerContent = 2438 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2439 } 2440 } 2441 2442 public void setDragController(DragController dragController) { 2443 mDragController = dragController; 2444 } 2445 2446 public void onDropCompleted(View target, boolean success) { 2447 if (success) { 2448 if (target != this && mDragInfo != null) { 2449 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2450 cellLayout.removeView(mDragInfo.cell); 2451 if (mDragInfo.cell instanceof DropTarget) { 2452 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2453 } 2454 // final Object tag = mDragInfo.cell.getTag(); 2455 } 2456 } else if (mDragInfo != null) { 2457 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2458 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, animateDrop); 2459 } 2460 mLauncher.unlockScreenOrientation(); 2461 mDragOutline = null; 2462 mDragInfo = null; 2463 } 2464 2465 @Override 2466 public void onDragViewVisible() { 2467 ((View) mDragInfo.cell).setVisibility(View.GONE); 2468 } 2469 2470 public boolean isDropEnabled() { 2471 return true; 2472 } 2473 2474 @Override 2475 protected void onRestoreInstanceState(Parcelable state) { 2476 super.onRestoreInstanceState(state); 2477 Launcher.setScreen(mCurrentPage); 2478 } 2479 2480 @Override 2481 public void scrollLeft() { 2482 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2483 super.scrollLeft(); 2484 } 2485 } 2486 2487 @Override 2488 public void scrollRight() { 2489 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2490 super.scrollRight(); 2491 } 2492 } 2493 2494 @Override 2495 public void onEnterScrollArea(int direction) { 2496 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2497 mInScrollArea = true; 2498 mPendingScrollDirection = direction; 2499 2500 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2501 final CellLayout layout = (CellLayout) getChildAt(page); 2502 2503 if (layout != null) { 2504 layout.setIsDragOverlapping(true); 2505 2506 if (mDragTargetLayout != null) { 2507 mDragTargetLayout.onDragExit(); 2508 mDragTargetLayout = null; 2509 } 2510 } 2511 } 2512 } 2513 2514 private void clearAllHovers() { 2515 final int childCount = getChildCount(); 2516 for (int i = 0; i < childCount; i++) { 2517 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2518 } 2519 mSpringLoadedDragController.onDragExit(); 2520 } 2521 2522 @Override 2523 public void onExitScrollArea() { 2524 if (mInScrollArea) { 2525 mInScrollArea = false; 2526 mPendingScrollDirection = DragController.SCROLL_NONE; 2527 clearAllHovers(); 2528 } 2529 } 2530 2531 public Folder getFolderForTag(Object tag) { 2532 final int screenCount = getChildCount(); 2533 for (int screen = 0; screen < screenCount; screen++) { 2534 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2535 int count = currentScreen.getChildCount(); 2536 for (int i = 0; i < count; i++) { 2537 View child = currentScreen.getChildAt(i); 2538 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2539 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2540 Folder f = (Folder) child; 2541 if (f.getInfo() == tag && f.getInfo().opened) { 2542 return f; 2543 } 2544 } 2545 } 2546 } 2547 return null; 2548 } 2549 2550 public View getViewForTag(Object tag) { 2551 int screenCount = getChildCount(); 2552 for (int screen = 0; screen < screenCount; screen++) { 2553 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2554 int count = currentScreen.getChildCount(); 2555 for (int i = 0; i < count; i++) { 2556 View child = currentScreen.getChildAt(i); 2557 if (child.getTag() == tag) { 2558 return child; 2559 } 2560 } 2561 } 2562 return null; 2563 } 2564 2565 2566 void removeItems(final ArrayList<ApplicationInfo> apps) { 2567 final int screenCount = getChildCount(); 2568 final PackageManager manager = getContext().getPackageManager(); 2569 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2570 2571 final HashSet<String> packageNames = new HashSet<String>(); 2572 final int appCount = apps.size(); 2573 for (int i = 0; i < appCount; i++) { 2574 packageNames.add(apps.get(i).componentName.getPackageName()); 2575 } 2576 2577 for (int i = 0; i < screenCount; i++) { 2578 final CellLayout layout = (CellLayout) getChildAt(i); 2579 2580 // Avoid ANRs by treating each screen separately 2581 post(new Runnable() { 2582 public void run() { 2583 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2584 childrenToRemove.clear(); 2585 2586 int childCount = layout.getChildCount(); 2587 for (int j = 0; j < childCount; j++) { 2588 final View view = layout.getChildAt(j); 2589 Object tag = view.getTag(); 2590 2591 if (tag instanceof ShortcutInfo) { 2592 final ShortcutInfo info = (ShortcutInfo) tag; 2593 final Intent intent = info.intent; 2594 final ComponentName name = intent.getComponent(); 2595 2596 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2597 for (String packageName: packageNames) { 2598 if (packageName.equals(name.getPackageName())) { 2599 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2600 childrenToRemove.add(view); 2601 } 2602 } 2603 } 2604 } else if (tag instanceof UserFolderInfo) { 2605 final UserFolderInfo info = (UserFolderInfo) tag; 2606 final ArrayList<ShortcutInfo> contents = info.contents; 2607 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2608 final int contentsCount = contents.size(); 2609 boolean removedFromFolder = false; 2610 2611 for (int k = 0; k < contentsCount; k++) { 2612 final ShortcutInfo appInfo = contents.get(k); 2613 final Intent intent = appInfo.intent; 2614 final ComponentName name = intent.getComponent(); 2615 2616 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2617 for (String packageName: packageNames) { 2618 if (packageName.equals(name.getPackageName())) { 2619 toRemove.add(appInfo); 2620 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2621 removedFromFolder = true; 2622 } 2623 } 2624 } 2625 } 2626 2627 contents.removeAll(toRemove); 2628 if (removedFromFolder) { 2629 final Folder folder = getOpenFolder(); 2630 if (folder != null) 2631 folder.notifyDataSetChanged(); 2632 } 2633 } else if (tag instanceof LiveFolderInfo) { 2634 final LiveFolderInfo info = (LiveFolderInfo) tag; 2635 final Uri uri = info.uri; 2636 final ProviderInfo providerInfo = manager.resolveContentProvider( 2637 uri.getAuthority(), 0); 2638 2639 if (providerInfo != null) { 2640 for (String packageName: packageNames) { 2641 if (packageName.equals(providerInfo.packageName)) { 2642 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2643 childrenToRemove.add(view); 2644 } 2645 } 2646 } 2647 } else if (tag instanceof LauncherAppWidgetInfo) { 2648 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2649 final AppWidgetProviderInfo provider = 2650 widgets.getAppWidgetInfo(info.appWidgetId); 2651 if (provider != null) { 2652 for (String packageName: packageNames) { 2653 if (packageName.equals(provider.provider.getPackageName())) { 2654 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2655 childrenToRemove.add(view); 2656 } 2657 } 2658 } 2659 } 2660 } 2661 2662 childCount = childrenToRemove.size(); 2663 for (int j = 0; j < childCount; j++) { 2664 View child = childrenToRemove.get(j); 2665 layout.removeViewInLayout(child); 2666 if (child instanceof DropTarget) { 2667 mDragController.removeDropTarget((DropTarget)child); 2668 } 2669 } 2670 2671 if (childCount > 0) { 2672 layout.requestLayout(); 2673 layout.invalidate(); 2674 } 2675 } 2676 }); 2677 } 2678 } 2679 2680 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2681 final int screenCount = getChildCount(); 2682 for (int i = 0; i < screenCount; i++) { 2683 final CellLayout layout = (CellLayout) getChildAt(i); 2684 int childCount = layout.getChildCount(); 2685 for (int j = 0; j < childCount; j++) { 2686 final View view = layout.getChildAt(j); 2687 Object tag = view.getTag(); 2688 if (tag instanceof ShortcutInfo) { 2689 ShortcutInfo info = (ShortcutInfo)tag; 2690 // We need to check for ACTION_MAIN otherwise getComponent() might 2691 // return null for some shortcuts (for instance, for shortcuts to 2692 // web pages.) 2693 final Intent intent = info.intent; 2694 final ComponentName name = intent.getComponent(); 2695 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2696 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2697 final int appCount = apps.size(); 2698 for (int k = 0; k < appCount; k++) { 2699 ApplicationInfo app = apps.get(k); 2700 if (app.componentName.equals(name)) { 2701 info.setIcon(mIconCache.getIcon(info.intent)); 2702 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2703 new FastBitmapDrawable(info.getIcon(mIconCache)), 2704 null, null); 2705 } 2706 } 2707 } 2708 } 2709 } 2710 } 2711 } 2712 2713 void moveToDefaultScreen(boolean animate) { 2714 if (mIsSmall || mIsInUnshrinkAnimation) { 2715 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2716 } else if (animate) { 2717 snapToPage(mDefaultPage); 2718 } else { 2719 setCurrentPage(mDefaultPage); 2720 } 2721 getChildAt(mDefaultPage).requestFocus(); 2722 } 2723 2724 void setIndicators(Drawable previous, Drawable next) { 2725 mPreviousIndicator = previous; 2726 mNextIndicator = next; 2727 previous.setLevel(mCurrentPage); 2728 next.setLevel(mCurrentPage); 2729 } 2730 2731 @Override 2732 public void syncPages() { 2733 } 2734 2735 @Override 2736 public void syncPageItems(int page) { 2737 } 2738 2739} 2740