Workspace.java revision 1d8ad0dd3b295b35e7fc9944eb298150b4fa4a99
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 WallpaperManager wpm = 603 (WallpaperManager) mLauncher.getSystemService(Context.WALLPAPER_SERVICE); 604 605 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 606 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 607 final int minDim = Math.min(display.getWidth(), display.getHeight()); 608 609 // We need to ensure that there is enough extra space in the wallpaper for the intended 610 // parallax effects 611 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 612 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 613 wpm.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 614 } 615 616 public void setVerticalWallpaperOffset(WallpaperVerticalOffset offsetPosition) { 617 float offset = 0.5f; 618 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 619 int wallpaperTravelHeight = (int) (display.getHeight() * 620 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 621 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 622 switch (offsetPosition) { 623 case TOP: 624 offset = 0.5f - offsetFromCenter; 625 break; 626 case MIDDLE: 627 offset = 0.5f; 628 break; 629 case BOTTOM: 630 offset = 0.5f + offsetFromCenter; 631 break; 632 } 633 mTargetVerticalWallpaperOffset = offset; 634 mWallpaperOffsetDirty = true; 635 } 636 637 private void updateHorizontalWallpaperOffset() { 638 if (LauncherApplication.isScreenXLarge()) { 639 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 640 // The wallpaper travel width is how far, from left to right, the wallpaper will move 641 // at this orientation (for example, in portrait mode we don't move all the way to the 642 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 643 int wallpaperTravelWidth = (int) (display.getWidth() * 644 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 645 646 // Account for overscroll: you only see the absolute edge of the wallpaper if 647 // you overscroll as far as you can in landscape mode 648 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 649 float overscrollRatio = overscrollOffset / (float) getScrollRange(); 650 int scrollRangeWithOverscroll = getScrollRange() + 2 * overscrollOffset; 651 652 // Set wallpaper offset steps (1 / (number of screens - 1)) 653 // We have 3 vertical offset states (centered, and then top/bottom aligned 654 // for all apps/customize) 655 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 656 657 float scrollProgress = 658 mScrollX / (float) scrollRangeWithOverscroll + overscrollRatio; 659 float offsetInDips = wallpaperTravelWidth * scrollProgress + 660 (mWallpaperWidth - wallpaperTravelWidth) / 2; 661 float offset = offsetInDips / (float) mWallpaperWidth; 662 663 mTargetHorizontalWallpaperOffset = Math.max(0f, Math.min(offset, 1.0f)); 664 mWallpaperOffsetDirty = true; 665 } 666 } 667 668 public void updateWallpaperOffsetImmediately() { 669 mUpdateWallpaperOffsetImmediately = true; 670 } 671 672 private void updateWallpaperOffsets(boolean immediate) { 673 long currentTime = System.currentTimeMillis(); 674 long millisecondsSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 675 millisecondsSinceLastUpdate = Math.min((long) (1000/30f), millisecondsSinceLastUpdate); 676 millisecondsSinceLastUpdate = Math.min(1L, millisecondsSinceLastUpdate); 677 final float PERCENT_TO_CATCH_UP_IN_100_MS_HORIZONTAL = 25f; 678 final float PERCENT_TO_CATCH_UP_IN_100_MS_VERTICAL = 25f; 679 final float UPDATE_THRESHOLD = 0.0001f; 680 float hOffsetDelta = mTargetHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 681 float vOffsetDelta = mTargetVerticalWallpaperOffset - mVerticalWallpaperOffset; 682 boolean stopUpdating = 683 Math.abs(hOffsetDelta / mTargetHorizontalWallpaperOffset) < UPDATE_THRESHOLD && 684 Math.abs(vOffsetDelta / mTargetVerticalWallpaperOffset) < UPDATE_THRESHOLD; 685 686 if (stopUpdating || immediate) { 687 mHorizontalWallpaperOffset = mTargetHorizontalWallpaperOffset; 688 mVerticalWallpaperOffset = mTargetVerticalWallpaperOffset; 689 } else { 690 float percentToCatchUpVertical = 691 millisecondsSinceLastUpdate / 100f * PERCENT_TO_CATCH_UP_IN_100_MS_VERTICAL; 692 float percentToCatchUpHorizontal = 693 millisecondsSinceLastUpdate / 100f * PERCENT_TO_CATCH_UP_IN_100_MS_HORIZONTAL; 694 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 695 mVerticalWallpaperOffset += 696 percentToCatchUpVertical * (mTargetVerticalWallpaperOffset - mVerticalWallpaperOffset); 697 } 698 IBinder token = getWindowToken(); 699 if (token != null) { 700 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 701 mHorizontalWallpaperOffset, mVerticalWallpaperOffset); 702 } 703 if (!stopUpdating && !immediate) { 704 invalidate(); 705 mWallpaperOffsetDirty = true; 706 } 707 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 708 } 709 710 @Override 711 public void computeScroll() { 712 super.computeScroll(); 713 updateHorizontalWallpaperOffset(); 714 } 715 716 public void showOutlines() { 717 if (!mIsSmall && !mIsInUnshrinkAnimation) { 718 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 719 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 720 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 721 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 722 mChildrenOutlineFadeInAnimation.start(); 723 } 724 } 725 726 public void hideOutlines() { 727 if (!mIsSmall && !mIsInUnshrinkAnimation) { 728 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 729 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 730 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 731 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 732 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 733 mChildrenOutlineFadeOutAnimation.start(); 734 } 735 } 736 737 public void setChildrenOutlineAlpha(float alpha) { 738 mChildrenOutlineAlpha = alpha; 739 for (int i = 0; i < getChildCount(); i++) { 740 CellLayout cl = (CellLayout) getChildAt(i); 741 cl.setBackgroundAlpha(alpha); 742 } 743 } 744 745 public float getChildrenOutlineAlpha() { 746 return mChildrenOutlineAlpha; 747 } 748 749 private void showBackgroundGradientForAllApps() { 750 showBackgroundGradient(); 751 mDrawCustomizeTrayBackground = false; 752 } 753 754 private void showBackgroundGradientForCustomizeTray() { 755 showBackgroundGradient(); 756 mDrawCustomizeTrayBackground = true; 757 } 758 759 private void showBackgroundGradient() { 760 if (mBackground == null) return; 761 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 762 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 763 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 764 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 765 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 766 mBackgroundFadeInAnimation.start(); 767 } 768 769 private void hideBackgroundGradient() { 770 if (mBackground == null) return; 771 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 772 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 773 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 774 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 775 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 776 mBackgroundFadeOutAnimation.start(); 777 } 778 779 public void setBackgroundAlpha(float alpha) { 780 mBackgroundAlpha = alpha; 781 invalidate(); 782 } 783 784 public float getBackgroundAlpha() { 785 return mBackgroundAlpha; 786 } 787 788 /** 789 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 790 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 791 * as being larger. This method computes what offset the rotated view should be translated 792 * in order to minimize this perceived gap. 793 * @param degrees Angle of the view 794 * @param width Width of the view 795 * @param height Height of the view 796 * @return Offset to be used in a View.setTranslationX() call 797 */ 798 private float getOffsetXForRotation(float degrees, int width, int height) { 799 mMatrix.reset(); 800 mCamera.save(); 801 mCamera.rotateY(Math.abs(degrees)); 802 mCamera.getMatrix(mMatrix); 803 mCamera.restore(); 804 805 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 806 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 807 mTempFloat2[0] = width; 808 mTempFloat2[1] = height; 809 mMatrix.mapPoints(mTempFloat2); 810 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 811 } 812 813 float backgroundAlphaInterpolator(float r) { 814 float pivotA = 0.1f; 815 float pivotB = 0.4f; 816 if (r < pivotA) { 817 return 0; 818 } else if (r > pivotB) { 819 return 1.0f; 820 } else { 821 return (r - pivotA)/(pivotB - pivotA); 822 } 823 } 824 825 float overScrollBackgroundAlphaInterpolator(float r) { 826 float threshold = 0.08f; 827 828 if (r > mOverScrollMaxBackgroundAlpha) { 829 mOverScrollMaxBackgroundAlpha = r; 830 } else if (r < mOverScrollMaxBackgroundAlpha) { 831 r = mOverScrollMaxBackgroundAlpha; 832 } 833 834 return Math.min(r / threshold, 1.0f); 835 } 836 837 @Override 838 protected void screenScrolled(int screenCenter) { 839 final int halfScreenSize = getMeasuredWidth() / 2; 840 841 for (int i = 0; i < getChildCount(); i++) { 842 CellLayout cl = (CellLayout) getChildAt(i); 843 if (cl != null) { 844 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 845 int delta = screenCenter - (getChildOffset(i) - 846 getRelativeChildOffset(i) + halfScreenSize); 847 848 float scrollProgress = delta / (totalDistance * 1.0f); 849 scrollProgress = Math.min(scrollProgress, 1.0f); 850 scrollProgress = Math.max(scrollProgress, -1.0f); 851 852 // If the current page (i) is being overscrolled, we use a different 853 // set of rules for setting the background alpha multiplier. 854 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 855 i == getChildCount() -1 )) { 856 cl.setBackgroundAlphaMultiplier( 857 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 858 mOverScrollPageIndex = i; 859 } else if (mOverScrollPageIndex != i) { 860 cl.setBackgroundAlphaMultiplier( 861 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 862 863 } 864 865 float rotation = WORKSPACE_ROTATION * scrollProgress; 866 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 867 cl.setTranslationX(translationX); 868 869 cl.setRotationY(rotation); 870 } 871 } 872 } 873 874 protected void onAttachedToWindow() { 875 super.onAttachedToWindow(); 876 computeScroll(); 877 mDragController.setWindowToken(getWindowToken()); 878 } 879 880 @Override 881 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 882 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 883 mUpdateWallpaperOffsetImmediately = true; 884 } 885 super.onLayout(changed, left, top, right, bottom); 886 887 // if shrinkToBottom() is called on initialization, it has to be deferred 888 // until after the first call to onLayout so that it has the correct width 889 if (mWaitingToShrink) { 890 // shrink can trigger a synchronous onLayout call, so we 891 // post this to avoid a stack overflow / tangled onLayout calls 892 post(new Runnable() { 893 public void run() { 894 shrink(mWaitingToShrinkState, false); 895 mWaitingToShrink = false; 896 } 897 }); 898 } 899 900 if (LauncherApplication.isInPlaceRotationEnabled()) { 901 // When the device is rotated, the scroll position of the current screen 902 // needs to be refreshed 903 setCurrentPage(getCurrentPage()); 904 } 905 } 906 907 public void enableCacheUpdates() { 908 final int pageCount = getChildCount(); 909 for (int i = 0; i < pageCount; i++) { 910 final CellLayout page = (CellLayout) getChildAt(i); 911 page.enableCacheUpdates(); 912 } 913 } 914 915 public void disableCacheUpdates() { 916 final int pageCount = getChildCount(); 917 for (int i = 0; i < pageCount; i++) { 918 final CellLayout page = (CellLayout) getChildAt(i); 919 page.disableCacheUpdates(); 920 } 921 } 922 923 @Override 924 protected void onDraw(Canvas canvas) { 925 if (mWallpaperOffsetDirty) { 926 updateWallpaperOffsets(mUpdateWallpaperOffsetImmediately); 927 mWallpaperOffsetDirty = false; 928 mUpdateWallpaperOffsetImmediately = false; 929 } 930 931 // Draw the background gradient if necessary 932 if (mBackground != null && mBackgroundAlpha > 0.0f) { 933 int alpha = (int) (mBackgroundAlpha * 255); 934 if (mDrawCustomizeTrayBackground) { 935 // Find out where to offset the gradient for the customization tray content 936 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 937 final Matrix m = mCustomizationDrawer.getMatrix(); 938 mCustomizationDrawerTransformedPos[0] = 0.0f; 939 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 940 m.mapPoints(mCustomizationDrawerTransformedPos); 941 942 // Draw the bg glow behind the gradient 943 mCustomizeTrayBackground.setAlpha(alpha); 944 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 945 getMeasuredHeight()); 946 mCustomizeTrayBackground.draw(canvas); 947 948 // Draw the bg gradient 949 final int offset = (int) (mCustomizationDrawerPos[1] + 950 mCustomizationDrawerTransformedPos[1]); 951 mBackground.setAlpha(alpha); 952 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 953 offset + getMeasuredHeight()); 954 mBackground.draw(canvas); 955 } else { 956 mBackground.setAlpha(alpha); 957 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 958 getMeasuredHeight()); 959 mBackground.draw(canvas); 960 } 961 } 962 super.onDraw(canvas); 963 } 964 965 @Override 966 protected void dispatchDraw(Canvas canvas) { 967 if (mIsSmall || mIsInUnshrinkAnimation) { 968 // Draw all the workspaces if we're small 969 final int pageCount = getChildCount(); 970 final long drawingTime = getDrawingTime(); 971 for (int i = 0; i < pageCount; i++) { 972 final View page = (View) getChildAt(i); 973 974 drawChild(canvas, page, drawingTime); 975 } 976 } else { 977 super.dispatchDraw(canvas); 978 979 final int width = getWidth(); 980 final int height = getHeight(); 981 982 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 983 if (mInScrollArea && (height > width)) { 984 final int pageHeight = getChildAt(0).getHeight(); 985 986 // This determines the height of the glowing edge: 90% of the page height 987 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 988 989 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 990 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 991 992 if (leftPage != null && leftPage.getIsDragOverlapping()) { 993 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 994 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 995 d.draw(canvas); 996 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 997 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 998 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 999 d.draw(canvas); 1000 } 1001 } 1002 1003 if (mDropView != null) { 1004 // We are animating an item that was just dropped on the home screen. 1005 // Render its View in the current animation position. 1006 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1007 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1008 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1009 canvas.translate(xPos, yPos); 1010 mDropView.draw(canvas); 1011 canvas.restore(); 1012 } 1013 } 1014 } 1015 1016 @Override 1017 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1018 if (!mLauncher.isAllAppsVisible()) { 1019 final Folder openFolder = getOpenFolder(); 1020 if (openFolder != null) { 1021 return openFolder.requestFocus(direction, previouslyFocusedRect); 1022 } else { 1023 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1024 } 1025 } 1026 return false; 1027 } 1028 1029 @Override 1030 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1031 if (!mLauncher.isAllAppsVisible()) { 1032 final Folder openFolder = getOpenFolder(); 1033 if (openFolder != null) { 1034 openFolder.addFocusables(views, direction); 1035 } else { 1036 super.addFocusables(views, direction, focusableMode); 1037 } 1038 } 1039 } 1040 1041 @Override 1042 public boolean dispatchTouchEvent(MotionEvent ev) { 1043 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1044 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1045 // ie when you click on a mini-screen, it zooms back to that screen) 1046 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1047 return false; 1048 } 1049 } 1050 1051 return super.dispatchTouchEvent(ev); 1052 } 1053 1054 void enableChildrenCache(int fromPage, int toPage) { 1055 if (fromPage > toPage) { 1056 final int temp = fromPage; 1057 fromPage = toPage; 1058 toPage = temp; 1059 } 1060 1061 final int screenCount = getChildCount(); 1062 1063 fromPage = Math.max(fromPage, 0); 1064 toPage = Math.min(toPage, screenCount - 1); 1065 1066 for (int i = fromPage; i <= toPage; i++) { 1067 final CellLayout layout = (CellLayout) getChildAt(i); 1068 layout.setChildrenDrawnWithCacheEnabled(true); 1069 layout.setChildrenDrawingCacheEnabled(true); 1070 } 1071 } 1072 1073 void clearChildrenCache() { 1074 final int screenCount = getChildCount(); 1075 for (int i = 0; i < screenCount; i++) { 1076 final CellLayout layout = (CellLayout) getChildAt(i); 1077 layout.setChildrenDrawnWithCacheEnabled(false); 1078 } 1079 } 1080 1081 @Override 1082 public boolean onTouchEvent(MotionEvent ev) { 1083 if (mLauncher.isAllAppsVisible()) { 1084 // Cancel any scrolling that is in progress. 1085 if (!mScroller.isFinished()) { 1086 mScroller.abortAnimation(); 1087 } 1088 setCurrentPage(mCurrentPage); 1089 1090 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1091 mLauncher.showWorkspace(true); 1092 // Let the events fall through to the CellLayouts because if they are not 1093 // hit, then we get a crash due to a missing ACTION_DOWN touch event 1094 } 1095 1096 return false; // We don't want the events 1097 } 1098 1099 return super.onTouchEvent(ev); 1100 } 1101 1102 @Override 1103 protected void onWallpaperTap(MotionEvent ev) { 1104 final int[] position = mTempCell; 1105 getLocationOnScreen(position); 1106 1107 int pointerIndex = ev.getActionIndex(); 1108 position[0] += (int) ev.getX(pointerIndex); 1109 position[1] += (int) ev.getY(pointerIndex); 1110 1111 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1112 ev.getAction() == MotionEvent.ACTION_UP 1113 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1114 position[0], position[1], 0, null); 1115 } 1116 1117 public boolean isSmall() { 1118 return mIsSmall; 1119 } 1120 1121 private float getYScaleForScreen(int screen) { 1122 int x = Math.abs(screen - 2); 1123 1124 // TODO: This should be generalized for use with arbitrary rotation angles. 1125 switch(x) { 1126 case 0: return EXTRA_SCALE_FACTOR_0; 1127 case 1: return EXTRA_SCALE_FACTOR_1; 1128 case 2: return EXTRA_SCALE_FACTOR_2; 1129 } 1130 return 1.0f; 1131 } 1132 1133 public void shrink(ShrinkState shrinkState) { 1134 shrink(shrinkState, true); 1135 } 1136 1137 // we use this to shrink the workspace for the all apps view and the customize view 1138 public void shrink(ShrinkState shrinkState, boolean animated) { 1139 if (mFirstLayout) { 1140 // (mFirstLayout == "first layout has not happened yet") 1141 // if we get a call to shrink() as part of our initialization (for example, if 1142 // Launcher is started in All Apps mode) then we need to wait for a layout call 1143 // to get our width so we can layout the mini-screen views correctly 1144 mWaitingToShrink = true; 1145 mWaitingToShrinkState = shrinkState; 1146 return; 1147 } 1148 mIsSmall = true; 1149 mShrinkState = shrinkState; 1150 1151 // Stop any scrolling, move to the current page right away 1152 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1153 if (!mIsDragInProcess) { 1154 updateWhichPagesAcceptDrops(mShrinkState); 1155 } 1156 1157 // we intercept and reject all touch events when we're small, so be sure to reset the state 1158 mTouchState = TOUCH_STATE_REST; 1159 mActivePointerId = INVALID_POINTER; 1160 1161 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1162 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1163 currentPage.setBackgroundAlpha(0.0f); 1164 } 1165 currentPage.setBackgroundAlphaMultiplier(1.0f); 1166 1167 final Resources res = getResources(); 1168 final int screenWidth = getWidth(); 1169 final int screenHeight = getHeight(); 1170 1171 // Making the assumption that all pages have the same width as the 0th 1172 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1173 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1174 1175 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1176 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1177 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1178 1179 final int screenCount = getChildCount(); 1180 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1181 1182 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1183 float newY = (isPortrait ? 1184 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1185 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1186 float finalAlpha = 1.0f; 1187 float extraShrinkFactor = 1.0f; 1188 1189 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1190 newY = screenHeight - newY - scaledPageHeight; 1191 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1192 1193 // We shrink and disappear to nothing in the case of all apps 1194 // (which is when we shrink to the bottom) 1195 newY = screenHeight - newY - scaledPageHeight; 1196 finalAlpha = 0.0f; 1197 } else if (shrinkState == ShrinkState.MIDDLE) { 1198 newY = screenHeight / 2 - scaledPageHeight / 2; 1199 finalAlpha = 1.0f; 1200 } else if (shrinkState == ShrinkState.TOP) { 1201 newY = (isPortrait ? 1202 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1203 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1204 } 1205 1206 int duration; 1207 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1208 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1209 } else { 1210 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1211 } 1212 1213 // We animate all the screens to the centered position in workspace 1214 // At the same time, the screens become greyed/dimmed 1215 1216 // newX is initialized to the left-most position of the centered screens 1217 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1218 1219 // We are going to scale about the center of the view, so we need to adjust the positions 1220 // of the views accordingly 1221 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1222 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1223 1224 if (mAnimator != null) { 1225 mAnimator.cancel(); 1226 } 1227 1228 mAnimator = new AnimatorSet(); 1229 for (int i = 0; i < screenCount; i++) { 1230 final CellLayout cl = (CellLayout) getChildAt(i); 1231 1232 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1233 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1234 float rotationScaleY = getYScaleForScreen(i); 1235 1236 if (animated) { 1237 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1238 PropertyValuesHolder.ofFloat("x", newX), 1239 PropertyValuesHolder.ofFloat("y", newY), 1240 PropertyValuesHolder.ofFloat("scaleX", 1241 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1242 PropertyValuesHolder.ofFloat("scaleY", 1243 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1244 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1245 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1246 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1247 1248 animWithInterpolator.setDuration(duration); 1249 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1250 mAnimator.playTogether(animWithInterpolator); 1251 } else { 1252 cl.setX((int)newX); 1253 cl.setY((int)newY); 1254 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1255 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1256 cl.setBackgroundAlpha(finalAlpha); 1257 cl.setAlpha(finalAlpha); 1258 cl.setRotationY(rotation); 1259 mShrinkAnimationListener.onAnimationEnd(null); 1260 } 1261 // increment newX for the next screen 1262 newX += scaledPageWidth + extraScaledSpacing; 1263 } 1264 setLayoutScale(1.0f); 1265 if (animated) { 1266 mAnimator.addListener(mShrinkAnimationListener); 1267 mAnimator.start(); 1268 } 1269 setChildrenDrawnWithCacheEnabled(true); 1270 1271 if (shrinkState == ShrinkState.TOP) { 1272 showBackgroundGradientForCustomizeTray(); 1273 } else { 1274 showBackgroundGradientForAllApps(); 1275 } 1276 } 1277 1278 /* 1279 * This interpolator emulates the rate at which the perceived scale of an object changes 1280 * as its distance from a camera increases. When this interpolator is applied to a scale 1281 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1282 * from the camera. 1283 */ 1284 static class ZInterpolator implements TimeInterpolator { 1285 private float focalLength; 1286 1287 public ZInterpolator(float foc) { 1288 focalLength = foc; 1289 } 1290 1291 public float getInterpolation(float input) { 1292 return (1.0f - focalLength / (focalLength + input)) / 1293 (1.0f - focalLength / (focalLength + 1.0f)); 1294 } 1295 } 1296 1297 /* 1298 * The exact reverse of ZInterpolator. 1299 */ 1300 static class InverseZInterpolator implements TimeInterpolator { 1301 private ZInterpolator zInterpolator; 1302 public InverseZInterpolator(float foc) { 1303 zInterpolator = new ZInterpolator(foc); 1304 } 1305 public float getInterpolation(float input) { 1306 return 1 - zInterpolator.getInterpolation(1 - input); 1307 } 1308 } 1309 1310 /* 1311 * ZInterpolator compounded with an ease-out. 1312 */ 1313 static class ZoomOutInterpolator implements TimeInterpolator { 1314 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1315 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1316 1317 public float getInterpolation(float input) { 1318 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1319 } 1320 } 1321 1322 /* 1323 * InvereZInterpolator compounded with an ease-out. 1324 */ 1325 static class ZoomInInterpolator implements TimeInterpolator { 1326 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1327 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1328 1329 public float getInterpolation(float input) { 1330 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1331 } 1332 } 1333 1334 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1335 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1336 1337 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1338 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1339 } 1340 1341 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1342 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1343 } 1344 1345 private void updateWhichPagesAcceptDropsHelper( 1346 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1347 final int screenCount = getChildCount(); 1348 for (int i = 0; i < screenCount; i++) { 1349 CellLayout cl = (CellLayout) getChildAt(i); 1350 cl.setIsDragOccuring(isDragHappening); 1351 switch (state) { 1352 case TOP: 1353 cl.setIsDefaultDropTarget(i == mCurrentPage); 1354 case BOTTOM_HIDDEN: 1355 case BOTTOM_VISIBLE: 1356 if (!isDragHappening) { 1357 // even if a drag isn't happening, we don't want to show a screen as 1358 // accepting drops if it doesn't have at least one free cell 1359 spanX = 1; 1360 spanY = 1; 1361 } 1362 // the page accepts drops if we can find at least one empty spot 1363 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1364 break; 1365 default: 1366 throw new RuntimeException( 1367 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1368 } 1369 } 1370 } 1371 1372 /* 1373 * 1374 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1375 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1376 * 1377 * These methods mark the appropriate pages as accepting drops (which alters their visual 1378 * appearance). 1379 * 1380 */ 1381 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1382 mIsDragInProcess = true; 1383 1384 final Canvas canvas = new Canvas(); 1385 1386 // We need to add extra padding to the bitmap to make room for the glow effect 1387 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1388 1389 // The outline is used to visualize where the item will land if dropped 1390 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1391 1392 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1393 } 1394 1395 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1396 // never dragged over 1397 public void onDragStopped() { 1398 mIsDragInProcess = false; 1399 updateWhichPagesAcceptDrops(mShrinkState); 1400 } 1401 1402 @Override 1403 protected boolean handlePagingClicks() { 1404 return true; 1405 } 1406 1407 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1408 public void unshrink(CellLayout clThatWasClicked) { 1409 unshrink(clThatWasClicked, false); 1410 } 1411 1412 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1413 int newCurrentPage = indexOfChild(clThatWasClicked); 1414 if (mIsSmall) { 1415 if (springLoaded) { 1416 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1417 } 1418 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1419 unshrink(true, springLoaded); 1420 } 1421 } 1422 1423 1424 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1425 mShrinkState = ShrinkState.SPRING_LOADED; 1426 unshrink(clThatWasClicked, true); 1427 mDragTargetLayout.onDragEnter(); 1428 } 1429 1430 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1431 shrink(shrinkState); 1432 if (mDragTargetLayout != null) { 1433 mDragTargetLayout.onDragExit(); 1434 } 1435 } 1436 1437 void unshrink(boolean animated) { 1438 unshrink(animated, false); 1439 } 1440 1441 void unshrink(boolean animated, boolean springLoaded) { 1442 mWaitingToShrink = false; 1443 if (mIsSmall) { 1444 float finalScaleFactor = 1.0f; 1445 float finalBackgroundAlpha = 0.0f; 1446 if (springLoaded) { 1447 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1448 finalBackgroundAlpha = 1.0f; 1449 } else { 1450 mIsSmall = false; 1451 } 1452 if (mAnimator != null) { 1453 mAnimator.cancel(); 1454 } 1455 1456 mAnimator = new AnimatorSet(); 1457 final int screenCount = getChildCount(); 1458 1459 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1460 for (int i = 0; i < screenCount; i++) { 1461 final CellLayout cl = (CellLayout)getChildAt(i); 1462 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1463 float finalAlphaMultiplierValue = 1464 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1465 0.0f : 1.0f; 1466 float rotation = 0.0f; 1467 1468 if (i < mCurrentPage) { 1469 rotation = WORKSPACE_ROTATION; 1470 } else if (i > mCurrentPage) { 1471 rotation = -WORKSPACE_ROTATION; 1472 } 1473 1474 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1475 1476 if (animated) { 1477 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1478 PropertyValuesHolder.ofFloat("translationX", translation), 1479 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1480 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1481 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1482 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1483 PropertyValuesHolder.ofFloat("backgroundAlphaMultiplier", 1484 finalAlphaMultiplierValue), 1485 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1486 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1487 animWithInterpolator.setDuration(duration); 1488 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1489 mAnimator.playTogether(animWithInterpolator); 1490 } else { 1491 cl.setTranslationX(translation); 1492 cl.setTranslationY(0.0f); 1493 cl.setScaleX(finalScaleFactor); 1494 cl.setScaleY(finalScaleFactor); 1495 cl.setBackgroundAlpha(0.0f); 1496 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1497 cl.setAlpha(finalAlphaValue); 1498 cl.setRotationY(rotation); 1499 mUnshrinkAnimationListener.onAnimationEnd(null); 1500 } 1501 } 1502 1503 if (animated) { 1504 // If we call this when we're not animated, onAnimationEnd is never called on 1505 // the listener; make sure we only use the listener when we're actually animating 1506 mAnimator.addListener(mUnshrinkAnimationListener); 1507 mAnimator.start(); 1508 } 1509 } 1510 1511 if (!springLoaded) { 1512 hideBackgroundGradient(); 1513 } 1514 } 1515 1516 /** 1517 * Draw the View v into the given Canvas. 1518 * 1519 * @param v the view to draw 1520 * @param destCanvas the canvas to draw on 1521 * @param padding the horizontal and vertical padding to use when drawing 1522 */ 1523 private void drawDragView(View v, Canvas destCanvas, int padding) { 1524 final Rect clipRect = mTempRect; 1525 v.getDrawingRect(clipRect); 1526 1527 // For a TextView, adjust the clip rect so that we don't include the text label 1528 if (v instanceof BubbleTextView) { 1529 final BubbleTextView tv = (BubbleTextView) v; 1530 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1531 tv.getLayout().getLineTop(0); 1532 } else if (v instanceof TextView) { 1533 final TextView tv = (TextView) v; 1534 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1535 tv.getLayout().getLineTop(0); 1536 } 1537 1538 // Draw the View into the bitmap. 1539 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1540 // they set scrollX and scrollY to large values to achieve centered text 1541 1542 destCanvas.save(); 1543 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1544 destCanvas.clipRect(clipRect, Op.REPLACE); 1545 v.draw(destCanvas); 1546 destCanvas.restore(); 1547 } 1548 1549 /** 1550 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1551 * Responsibility for the bitmap is transferred to the caller. 1552 */ 1553 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1554 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1555 final Bitmap b = Bitmap.createBitmap( 1556 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1557 1558 canvas.setBitmap(b); 1559 drawDragView(v, canvas, padding); 1560 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1561 return b; 1562 } 1563 1564 /** 1565 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1566 * Responsibility for the bitmap is transferred to the caller. 1567 */ 1568 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1569 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1570 final Bitmap b = Bitmap.createBitmap( 1571 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1572 1573 canvas.setBitmap(b); 1574 canvas.drawBitmap(orig, 0, 0, new Paint()); 1575 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1576 1577 return b; 1578 } 1579 1580 /** 1581 * Creates a drag outline to represent a drop (that we don't have the actual information for 1582 * yet). May be changed in the future to alter the drop outline slightly depending on the 1583 * clip description mime data. 1584 */ 1585 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1586 Resources r = getResources(); 1587 final int outlineColor = r.getColor(R.color.drag_outline_color); 1588 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1589 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1590 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1591 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1592 final Bitmap b = Bitmap.createBitmap( 1593 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1594 1595 canvas.setBitmap(b); 1596 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1597 rectRadius, rectRadius, mExternalDragOutlinePaint); 1598 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1599 return b; 1600 } 1601 1602 /** 1603 * Returns a new bitmap to show when the given View is being dragged around. 1604 * Responsibility for the bitmap is transferred to the caller. 1605 */ 1606 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1607 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1608 final Bitmap b = Bitmap.createBitmap( 1609 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1610 1611 canvas.setBitmap(b); 1612 canvas.drawBitmap(mDragOutline, 0, 0, null); 1613 drawDragView(v, canvas, padding); 1614 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1615 1616 return b; 1617 } 1618 1619 void startDrag(CellLayout.CellInfo cellInfo) { 1620 View child = cellInfo.cell; 1621 1622 // Make sure the drag was started by a long press as opposed to a long click. 1623 if (!child.isInTouchMode()) { 1624 return; 1625 } 1626 1627 mDragInfo = cellInfo; 1628 1629 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 1630 current.onDragChild(child); 1631 1632 child.clearFocus(); 1633 child.setPressed(false); 1634 1635 final Canvas canvas = new Canvas(); 1636 1637 // We need to add extra padding to the bitmap to make room for the glow effect 1638 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1639 1640 // The outline is used to visualize where the item will land if dropped 1641 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1642 1643 // The drag bitmap follows the touch point around on the screen 1644 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1645 1646 final int bmpWidth = b.getWidth(); 1647 final int bmpHeight = b.getHeight(); 1648 child.getLocationOnScreen(mTempXY); 1649 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1650 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1651 mLauncher.lockScreenOrientation(); 1652 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1653 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1654 b.recycle(); 1655 } 1656 1657 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1658 boolean insertAtFirst, int intersectX, int intersectY) { 1659 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1660 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1661 1662 final int[] cellXY = new int[2]; 1663 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1664 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1665 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1666 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1667 cellXY[0], cellXY[1]); 1668 } 1669 1670 private void setPositionForDropAnimation( 1671 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1672 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1673 1674 // Based on the position of the drag view, find the top left of the original view 1675 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1676 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1677 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1678 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1679 1680 // Set its old pos (in the new parent's coordinates); it will be animated 1681 // in animateViewIntoPosition after the next layout pass 1682 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1683 lp.oldY = viewY - (parent.getTop() - mScrollY); 1684 } 1685 1686 /* 1687 * We should be careful that this method cannot result in any synchronous requestLayout() 1688 * calls, as it is called from onLayout(). 1689 */ 1690 public void animateViewIntoPosition(final View view) { 1691 final CellLayout parent = (CellLayout) view.getParent(); 1692 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1693 1694 // Convert the animation params to be relative to the Workspace, not the CellLayout 1695 final int fromX = lp.oldX + parent.getLeft(); 1696 final int fromY = lp.oldY + parent.getTop(); 1697 1698 final int dx = lp.x - lp.oldX; 1699 final int dy = lp.y - lp.oldY; 1700 1701 // Calculate the duration of the animation based on the object's distance 1702 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1703 final Resources res = getResources(); 1704 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1705 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1706 if (dist < maxDist) { 1707 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1708 } 1709 1710 if (mDropAnim != null) { 1711 mDropAnim.end(); 1712 } 1713 mDropAnim = new ValueAnimator(); 1714 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1715 1716 // The view is invisible during the animation; we render it manually. 1717 mDropAnim.addListener(new AnimatorListenerAdapter() { 1718 public void onAnimationStart(Animator animation) { 1719 // Set this here so that we don't render it until the animation begins 1720 mDropView = view; 1721 } 1722 1723 public void onAnimationEnd(Animator animation) { 1724 if (mDropView != null) { 1725 mDropView.setVisibility(View.VISIBLE); 1726 mDropView = null; 1727 } 1728 } 1729 }); 1730 1731 mDropAnim.setDuration(duration); 1732 mDropAnim.setFloatValues(0.0f, 1.0f); 1733 mDropAnim.removeAllUpdateListeners(); 1734 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1735 public void onAnimationUpdate(ValueAnimator animation) { 1736 final float percent = (Float) animation.getAnimatedValue(); 1737 // Invalidate the old position 1738 invalidate(mDropViewPos[0], mDropViewPos[1], 1739 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1740 1741 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1742 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1743 invalidate(mDropViewPos[0], mDropViewPos[1], 1744 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1745 } 1746 }); 1747 1748 mDropAnim.start(); 1749 } 1750 1751 /** 1752 * {@inheritDoc} 1753 */ 1754 public boolean acceptDrop(DragSource source, int x, int y, 1755 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1756 1757 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1758 if (source != this) { 1759 // Don't accept the drop if we're not over a screen at time of drop 1760 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1761 return false; 1762 } 1763 1764 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1765 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1766 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1767 1768 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1769 1770 // Don't accept the drop if there's no room for the item 1771 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1772 mLauncher.showOutOfSpaceMessage(); 1773 return false; 1774 } 1775 } 1776 return true; 1777 } 1778 1779 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1780 DragView dragView, Object dragInfo) { 1781 1782 int originX = x - xOffset; 1783 int originY = y - yOffset; 1784 1785 if (mIsSmall || mIsInUnshrinkAnimation) { 1786 // get originX and originY in the local coordinate system of the screen 1787 mTempOriginXY[0] = originX; 1788 mTempOriginXY[1] = originY; 1789 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1790 originX = (int)mTempOriginXY[0]; 1791 originY = (int)mTempOriginXY[1]; 1792 } 1793 1794 // When you drag to a particular screen, make that the new current/default screen, so any 1795 // subsequent taps add items to that screen 1796 int dragTargetIndex = indexOfChild(mDragTargetLayout); 1797 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 1798 moveToNewPageWithoutMovingCellLayouts(dragTargetIndex); 1799 } 1800 1801 if (source != this) { 1802 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1803 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1804 } else { 1805 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1806 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1807 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1808 } 1809 } else if (mDragInfo != null) { 1810 final View cell = mDragInfo.cell; 1811 CellLayout dropTargetLayout = mDragTargetLayout; 1812 1813 // Handle the case where the user drops when in the scroll area. 1814 // This is treated as a drop on the adjacent page. 1815 if (dropTargetLayout == null && mInScrollArea) { 1816 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1817 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1818 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1819 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1820 } 1821 } 1822 1823 if (dropTargetLayout != null) { 1824 // Move internally 1825 mTargetCell = findNearestVacantArea(originX, originY, 1826 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1827 mTargetCell); 1828 1829 final int screen = (mTargetCell == null) ? 1830 mDragInfo.screen : indexOfChild(dropTargetLayout); 1831 1832 if (screen != mCurrentPage) { 1833 snapToPage(screen); 1834 } 1835 1836 if (mTargetCell != null) { 1837 if (screen != mDragInfo.screen) { 1838 // Reparent the view 1839 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1840 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1841 mDragInfo.spanX, mDragInfo.spanY); 1842 } 1843 1844 // update the item's position after drop 1845 final ItemInfo info = (ItemInfo) cell.getTag(); 1846 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1847 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1848 lp.cellX = mTargetCell[0]; 1849 lp.cellY = mTargetCell[1]; 1850 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1851 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1852 1853 LauncherModel.moveItemInDatabase(mLauncher, info, 1854 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1855 lp.cellX, lp.cellY); 1856 } 1857 } 1858 1859 final CellLayout parent = (CellLayout) cell.getParent(); 1860 1861 // Prepare it to be animated into its new position 1862 // This must be called after the view has been re-parented 1863 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1864 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1865 parent.onDropChild(cell, animateDrop); 1866 } 1867 } 1868 1869 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1870 int yOffset, DragView dragView, Object dragInfo) { 1871 mDragTargetLayout = null; // Reset the drag state 1872 1873 if (!mIsSmall) { 1874 mDragTargetLayout = getCurrentDropLayout(); 1875 mDragTargetLayout.onDragEnter(); 1876 showOutlines(); 1877 } 1878 } 1879 1880 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1881 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1882 1883 if (mIsSmall || mIsInUnshrinkAnimation) { 1884 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1885 return null; 1886 } 1887 // We may need to delegate the drag to a child view. If a 1x1 item 1888 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1889 // then drag events should be handled by that child. 1890 1891 ItemInfo item = (ItemInfo)dragInfo; 1892 CellLayout currentLayout = getCurrentDropLayout(); 1893 1894 int dragPointX, dragPointY; 1895 if (item.spanX == 1 && item.spanY == 1) { 1896 // For a 1x1, calculate the drop cell exactly as in onDragOver 1897 dragPointX = x - xOffset; 1898 dragPointY = y - yOffset; 1899 } else { 1900 // Otherwise, use the exact drag coordinates 1901 dragPointX = x; 1902 dragPointY = y; 1903 } 1904 dragPointX += mScrollX - currentLayout.getLeft(); 1905 dragPointY += mScrollY - currentLayout.getTop(); 1906 1907 // If we are dragging over a cell that contains a DropTarget that will 1908 // accept the drop, delegate to that DropTarget. 1909 final int[] cellXY = mTempCell; 1910 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1911 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1912 if (child instanceof DropTarget) { 1913 DropTarget target = (DropTarget)child; 1914 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1915 return target; 1916 } 1917 } 1918 return null; 1919 } 1920 1921 /** 1922 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1923 * in the returned structure related to the widgets that match the drop (or a null list if it is 1924 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1925 */ 1926 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1927 final LauncherModel model = mLauncher.getModel(); 1928 final ClipDescription desc = event.getClipDescription(); 1929 final int mimeTypeCount = desc.getMimeTypeCount(); 1930 for (int i = 0; i < mimeTypeCount; ++i) { 1931 final String mimeType = desc.getMimeType(i); 1932 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1933 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1934 } else { 1935 final List<WidgetMimeTypeHandlerData> widgets = 1936 model.resolveWidgetsForMimeType(mContext, mimeType); 1937 if (widgets.size() > 0) { 1938 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1939 } 1940 } 1941 } 1942 return null; 1943 } 1944 1945 /** 1946 * Global drag and drop handler 1947 */ 1948 @Override 1949 public boolean onDragEvent(DragEvent event) { 1950 final ClipDescription desc = event.getClipDescription(); 1951 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1952 final int[] pos = new int[2]; 1953 layout.getLocationOnScreen(pos); 1954 // We need to offset the drag coordinates to layout coordinate space 1955 final int x = (int) event.getX() - pos[0]; 1956 final int y = (int) event.getY() - pos[1]; 1957 1958 switch (event.getAction()) { 1959 case DragEvent.ACTION_DRAG_STARTED: { 1960 // Validate this drag 1961 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1962 if (test != null) { 1963 boolean isShortcut = (test.second == null); 1964 if (isShortcut) { 1965 // Check if we have enough space on this screen to add a new shortcut 1966 if (!layout.findCellForSpan(pos, 1, 1)) { 1967 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1968 Toast.LENGTH_SHORT).show(); 1969 return false; 1970 } 1971 } 1972 } else { 1973 // Show error message if we couldn't accept any of the items 1974 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1975 Toast.LENGTH_SHORT).show(); 1976 return false; 1977 } 1978 1979 // Create the drag outline 1980 // We need to add extra padding to the bitmap to make room for the glow effect 1981 final Canvas canvas = new Canvas(); 1982 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1983 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1984 1985 // Show the current page outlines to indicate that we can accept this drop 1986 showOutlines(); 1987 layout.setIsDragOccuring(true); 1988 layout.onDragEnter(); 1989 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1990 1991 return true; 1992 } 1993 case DragEvent.ACTION_DRAG_LOCATION: 1994 // Visualize the drop location 1995 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1996 return true; 1997 case DragEvent.ACTION_DROP: { 1998 // Try and add any shortcuts 1999 final LauncherModel model = mLauncher.getModel(); 2000 final ClipData data = event.getClipData(); 2001 2002 // We assume that the mime types are ordered in descending importance of 2003 // representation. So we enumerate the list of mime types and alert the 2004 // user if any widgets can handle the drop. Only the most preferred 2005 // representation will be handled. 2006 pos[0] = x; 2007 pos[1] = y; 2008 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2009 if (test != null) { 2010 final int index = test.first; 2011 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2012 final boolean isShortcut = (widgets == null); 2013 final String mimeType = desc.getMimeType(index); 2014 if (isShortcut) { 2015 final Intent intent = data.getItemAt(index).getIntent(); 2016 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2017 onDropExternal(x, y, info, layout, false); 2018 } else { 2019 if (widgets.size() == 1) { 2020 // If there is only one item, then go ahead and add and configure 2021 // that widget 2022 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2023 final PendingAddWidgetInfo createInfo = 2024 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2025 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2026 } else { 2027 // Show the widget picker dialog if there is more than one widget 2028 // that can handle this data type 2029 final InstallWidgetReceiver.WidgetListAdapter adapter = 2030 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2031 data, widgets, layout, mCurrentPage, pos); 2032 final AlertDialog.Builder builder = 2033 new AlertDialog.Builder(mContext); 2034 builder.setAdapter(adapter, adapter); 2035 builder.setCancelable(true); 2036 builder.setTitle(mContext.getString( 2037 R.string.external_drop_widget_pick_title)); 2038 builder.setIcon(R.drawable.ic_no_applications); 2039 builder.show(); 2040 } 2041 } 2042 } 2043 return true; 2044 } 2045 case DragEvent.ACTION_DRAG_ENDED: 2046 // Hide the page outlines after the drop 2047 layout.setIsDragOccuring(false); 2048 layout.onDragExit(); 2049 hideOutlines(); 2050 return true; 2051 } 2052 return super.onDragEvent(event); 2053 } 2054 2055 /* 2056 * 2057 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2058 * coordinate space. The argument xy is modified with the return result. 2059 * 2060 */ 2061 void mapPointFromSelfToChild(View v, float[] xy) { 2062 mapPointFromSelfToChild(v, xy, null); 2063 } 2064 2065 /* 2066 * 2067 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2068 * coordinate space. The argument xy is modified with the return result. 2069 * 2070 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2071 * computing it itself; we use this to avoid redundant matrix inversions in 2072 * findMatchingPageForDragOver 2073 * 2074 */ 2075 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2076 if (cachedInverseMatrix == null) { 2077 v.getMatrix().invert(mTempInverseMatrix); 2078 cachedInverseMatrix = mTempInverseMatrix; 2079 } 2080 xy[0] = xy[0] + mScrollX - v.getLeft(); 2081 xy[1] = xy[1] + mScrollY - v.getTop(); 2082 cachedInverseMatrix.mapPoints(xy); 2083 } 2084 2085 /* 2086 * 2087 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2088 * the parent View's coordinate space. The argument xy is modified with the return result. 2089 * 2090 */ 2091 void mapPointFromChildToSelf(View v, float[] xy) { 2092 v.getMatrix().mapPoints(xy); 2093 xy[0] -= (mScrollX - v.getLeft()); 2094 xy[1] -= (mScrollY - v.getTop()); 2095 } 2096 2097 static private float squaredDistance(float[] point1, float[] point2) { 2098 float distanceX = point1[0] - point2[0]; 2099 float distanceY = point2[1] - point2[1]; 2100 return distanceX * distanceX + distanceY * distanceY; 2101 } 2102 2103 /* 2104 * 2105 * Returns true if the passed CellLayout cl overlaps with dragView 2106 * 2107 */ 2108 boolean overlaps(CellLayout cl, DragView dragView, 2109 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2110 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2111 final float[] draggedItemTopLeft = mTempDragCoordinates; 2112 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 2113 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 2114 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2115 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 2116 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 2117 2118 // Transform the dragged item's top left coordinates 2119 // to the CellLayout's local coordinates 2120 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2121 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2122 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2123 2124 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2125 // Transform the dragged item's bottom right coordinates 2126 // to the CellLayout's local coordinates 2127 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2128 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2129 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2130 2131 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2132 float overlap = (overlapRegionRight - overlapRegionLeft) * 2133 (overlapRegionBottom - overlapRegionTop); 2134 if (overlap > 0) { 2135 return true; 2136 } 2137 } 2138 } 2139 return false; 2140 } 2141 2142 /* 2143 * 2144 * This method returns the CellLayout that is currently being dragged to. In order to drag 2145 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2146 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2147 * 2148 * Return null if no CellLayout is currently being dragged over 2149 * 2150 */ 2151 private CellLayout findMatchingPageForDragOver( 2152 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2153 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2154 // with the item being dragged and then choose the one that's closest to the touch point 2155 final int screenCount = getChildCount(); 2156 CellLayout bestMatchingScreen = null; 2157 float smallestDistSoFar = Float.MAX_VALUE; 2158 2159 for (int i = 0; i < screenCount; i++) { 2160 CellLayout cl = (CellLayout)getChildAt(i); 2161 2162 final float[] touchXy = mTempTouchCoordinates; 2163 touchXy[0] = originX + offsetX; 2164 touchXy[1] = originY + offsetY; 2165 2166 // Transform the touch coordinates to the CellLayout's local coordinates 2167 // If the touch point is within the bounds of the cell layout, we can return immediately 2168 cl.getMatrix().invert(mTempInverseMatrix); 2169 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2170 2171 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2172 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2173 return cl; 2174 } 2175 2176 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2177 // Get the center of the cell layout in screen coordinates 2178 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2179 cellLayoutCenter[0] = cl.getWidth()/2; 2180 cellLayoutCenter[1] = cl.getHeight()/2; 2181 mapPointFromChildToSelf(cl, cellLayoutCenter); 2182 2183 touchXy[0] = originX + offsetX; 2184 touchXy[1] = originY + offsetY; 2185 2186 // Calculate the distance between the center of the CellLayout 2187 // and the touch point 2188 float dist = squaredDistance(touchXy, cellLayoutCenter); 2189 2190 if (dist < smallestDistSoFar) { 2191 smallestDistSoFar = dist; 2192 bestMatchingScreen = cl; 2193 } 2194 } 2195 } 2196 return bestMatchingScreen; 2197 } 2198 2199 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2200 DragView dragView, Object dragInfo) { 2201 // When touch is inside the scroll area, skip dragOver actions for the current screen 2202 if (!mInScrollArea) { 2203 CellLayout layout; 2204 int originX = x - xOffset; 2205 int originY = y - yOffset; 2206 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2207 if (shrunken) { 2208 layout = findMatchingPageForDragOver( 2209 dragView, originX, originY, xOffset, yOffset); 2210 2211 if (layout != mDragTargetLayout) { 2212 if (mDragTargetLayout != null) { 2213 mDragTargetLayout.setIsDragOverlapping(false); 2214 mSpringLoadedDragController.onDragExit(); 2215 } 2216 mDragTargetLayout = layout; 2217 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2218 mDragTargetLayout.setIsDragOverlapping(true); 2219 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2220 } 2221 } 2222 } else { 2223 layout = getCurrentDropLayout(); 2224 if (layout != mDragTargetLayout) { 2225 if (mDragTargetLayout != null) { 2226 mDragTargetLayout.onDragExit(); 2227 } 2228 layout.onDragEnter(); 2229 mDragTargetLayout = layout; 2230 } 2231 } 2232 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2233 layout = getCurrentDropLayout(); 2234 2235 final ItemInfo item = (ItemInfo)dragInfo; 2236 if (dragInfo instanceof LauncherAppWidgetInfo) { 2237 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2238 2239 if (widgetInfo.spanX == -1) { 2240 // Calculate the grid spans needed to fit this widget 2241 int[] spans = layout.rectToCell( 2242 widgetInfo.minWidth, widgetInfo.minHeight, null); 2243 item.spanX = spans[0]; 2244 item.spanY = spans[1]; 2245 } 2246 } 2247 2248 if (source instanceof AllAppsPagedView) { 2249 // This is a hack to fix the point used to determine which cell an icon from 2250 // the all apps screen is over 2251 if (item != null && item.spanX == 1 && layout != null) { 2252 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2253 2254 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2255 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2256 dragView.setDragRegion(dragView.getDragRegionLeft(), 2257 dragView.getDragRegionTop(), 2258 layout.getCellWidth(), 2259 dragView.getDragRegionHeight()); 2260 } 2261 } 2262 } else if (source == this) { 2263 // When dragging from the workspace, the drag view is slightly bigger than 2264 // the original view, and offset vertically. Adjust to account for this. 2265 final View origView = mDragInfo.cell; 2266 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2267 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2268 + dragView.getOffsetY(); 2269 } 2270 2271 if (mDragTargetLayout != null) { 2272 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2273 float[] localOrigin = { originX, originY }; 2274 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2275 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2276 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2277 } 2278 } 2279 } 2280 } 2281 2282 public void onDragExit(DragSource source, int x, int y, int xOffset, 2283 int yOffset, DragView dragView, Object dragInfo) { 2284 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2285 if (mDragTargetLayout != null) { 2286 mDragTargetLayout.onDragExit(); 2287 } 2288 if (!mIsPageMoving) { 2289 hideOutlines(); 2290 } 2291 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2292 mLauncher.exitSpringLoadedDragMode(); 2293 } 2294 clearAllHovers(); 2295 } 2296 2297 @Override 2298 public void getHitRect(Rect outRect) { 2299 // We want the workspace to have the whole area of the display (it will find the correct 2300 // cell layout to drop to in the existing drag/drop logic. 2301 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2302 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2303 } 2304 2305 /** 2306 * Add the item specified by dragInfo to the given layout. 2307 * @return true if successful 2308 */ 2309 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2310 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2311 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2312 return true; 2313 } 2314 mLauncher.showOutOfSpaceMessage(); 2315 return false; 2316 } 2317 2318 /** 2319 * Drop an item that didn't originate on one of the workspace screens. 2320 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2321 * come from another app altogether. 2322 * 2323 * NOTE: This can also be called when we are outside of a drag event, when we want 2324 * to add an item to one of the workspace screens. 2325 */ 2326 private void onDropExternal(int x, int y, Object dragInfo, 2327 CellLayout cellLayout, boolean insertAtFirst) { 2328 int screen = indexOfChild(cellLayout); 2329 if (dragInfo instanceof PendingAddItemInfo) { 2330 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2331 // When dragging and dropping from customization tray, we deal with creating 2332 // widgets/shortcuts/folders in a slightly different way 2333 // Only set touchXY if you are supporting spring loaded adding of items 2334 int[] touchXY = new int[2]; 2335 touchXY[0] = x; 2336 touchXY[1] = y; 2337 switch (info.itemType) { 2338 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2339 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2340 break; 2341 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2342 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2343 break; 2344 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2345 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2346 break; 2347 default: 2348 throw new IllegalStateException("Unknown item type: " + info.itemType); 2349 } 2350 cellLayout.onDragExit(); 2351 } else { 2352 // This is for other drag/drop cases, like dragging from All Apps 2353 ItemInfo info = (ItemInfo) dragInfo; 2354 View view = null; 2355 2356 switch (info.itemType) { 2357 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2358 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2359 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2360 // Came from all apps -- make a copy 2361 info = new ShortcutInfo((ApplicationInfo) info); 2362 } 2363 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2364 (ShortcutInfo) info); 2365 break; 2366 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2367 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2368 cellLayout, (UserFolderInfo) info, mIconCache); 2369 break; 2370 default: 2371 throw new IllegalStateException("Unknown item type: " + info.itemType); 2372 } 2373 2374 mTargetCell = new int[2]; 2375 if (x != -1 && y != -1) { 2376 // when dragging and dropping, just find the closest free spot 2377 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2378 } else { 2379 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2380 } 2381 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2382 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2383 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2384 cellLayout.onDropChild(view, animateDrop); 2385 cellLayout.animateDrop(); 2386 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2387 2388 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2389 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2390 lp.cellX, lp.cellY); 2391 } 2392 } 2393 2394 /** 2395 * Return the current {@link CellLayout}, correctly picking the destination 2396 * screen while a scroll is in progress. 2397 */ 2398 private CellLayout getCurrentDropLayout() { 2399 // if we're currently small, use findMatchingPageForDragOver instead 2400 if (mIsSmall) return null; 2401 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2402 return (CellLayout) getChildAt(index); 2403 } 2404 2405 /** 2406 * Return the current CellInfo describing our current drag; this method exists 2407 * so that Launcher can sync this object with the correct info when the activity is created/ 2408 * destroyed 2409 * 2410 */ 2411 public CellLayout.CellInfo getDragInfo() { 2412 return mDragInfo; 2413 } 2414 2415 /** 2416 * Calculate the nearest cell where the given object would be dropped. 2417 */ 2418 private int[] findNearestVacantArea(int pixelX, int pixelY, 2419 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2420 2421 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2422 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2423 2424 // Find the best target drop location 2425 return layout.findNearestVacantArea( 2426 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2427 } 2428 2429 void setLauncher(Launcher launcher) { 2430 mLauncher = launcher; 2431 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2432 2433 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2434 if (mCustomizationDrawer != null) { 2435 mCustomizationDrawerContent = 2436 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2437 } 2438 } 2439 2440 public void setDragController(DragController dragController) { 2441 mDragController = dragController; 2442 } 2443 2444 public void onDropCompleted(View target, boolean success) { 2445 if (success) { 2446 if (target != this && mDragInfo != null) { 2447 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2448 cellLayout.removeView(mDragInfo.cell); 2449 if (mDragInfo.cell instanceof DropTarget) { 2450 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2451 } 2452 // final Object tag = mDragInfo.cell.getTag(); 2453 } 2454 } else if (mDragInfo != null) { 2455 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2456 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, animateDrop); 2457 } 2458 mLauncher.unlockScreenOrientation(); 2459 mDragOutline = null; 2460 mDragInfo = null; 2461 } 2462 2463 @Override 2464 public void onDragViewVisible() { 2465 ((View) mDragInfo.cell).setVisibility(View.GONE); 2466 } 2467 2468 public boolean isDropEnabled() { 2469 return true; 2470 } 2471 2472 @Override 2473 protected void onRestoreInstanceState(Parcelable state) { 2474 super.onRestoreInstanceState(state); 2475 Launcher.setScreen(mCurrentPage); 2476 } 2477 2478 @Override 2479 public void scrollLeft() { 2480 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2481 super.scrollLeft(); 2482 } 2483 } 2484 2485 @Override 2486 public void scrollRight() { 2487 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2488 super.scrollRight(); 2489 } 2490 } 2491 2492 @Override 2493 public void onEnterScrollArea(int direction) { 2494 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2495 mInScrollArea = true; 2496 mPendingScrollDirection = direction; 2497 2498 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2499 final CellLayout layout = (CellLayout) getChildAt(page); 2500 2501 if (layout != null) { 2502 layout.setIsDragOverlapping(true); 2503 2504 if (mDragTargetLayout != null) { 2505 mDragTargetLayout.onDragExit(); 2506 mDragTargetLayout = null; 2507 } 2508 } 2509 } 2510 } 2511 2512 private void clearAllHovers() { 2513 final int childCount = getChildCount(); 2514 for (int i = 0; i < childCount; i++) { 2515 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2516 } 2517 mSpringLoadedDragController.onDragExit(); 2518 } 2519 2520 @Override 2521 public void onExitScrollArea() { 2522 if (mInScrollArea) { 2523 mInScrollArea = false; 2524 mPendingScrollDirection = DragController.SCROLL_NONE; 2525 clearAllHovers(); 2526 } 2527 } 2528 2529 public Folder getFolderForTag(Object tag) { 2530 final int screenCount = getChildCount(); 2531 for (int screen = 0; screen < screenCount; screen++) { 2532 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2533 int count = currentScreen.getChildCount(); 2534 for (int i = 0; i < count; i++) { 2535 View child = currentScreen.getChildAt(i); 2536 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2537 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2538 Folder f = (Folder) child; 2539 if (f.getInfo() == tag && f.getInfo().opened) { 2540 return f; 2541 } 2542 } 2543 } 2544 } 2545 return null; 2546 } 2547 2548 public View getViewForTag(Object tag) { 2549 int screenCount = getChildCount(); 2550 for (int screen = 0; screen < screenCount; screen++) { 2551 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2552 int count = currentScreen.getChildCount(); 2553 for (int i = 0; i < count; i++) { 2554 View child = currentScreen.getChildAt(i); 2555 if (child.getTag() == tag) { 2556 return child; 2557 } 2558 } 2559 } 2560 return null; 2561 } 2562 2563 2564 void removeItems(final ArrayList<ApplicationInfo> apps) { 2565 final int screenCount = getChildCount(); 2566 final PackageManager manager = getContext().getPackageManager(); 2567 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2568 2569 final HashSet<String> packageNames = new HashSet<String>(); 2570 final int appCount = apps.size(); 2571 for (int i = 0; i < appCount; i++) { 2572 packageNames.add(apps.get(i).componentName.getPackageName()); 2573 } 2574 2575 for (int i = 0; i < screenCount; i++) { 2576 final CellLayout layout = (CellLayout) getChildAt(i); 2577 2578 // Avoid ANRs by treating each screen separately 2579 post(new Runnable() { 2580 public void run() { 2581 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2582 childrenToRemove.clear(); 2583 2584 int childCount = layout.getChildCount(); 2585 for (int j = 0; j < childCount; j++) { 2586 final View view = layout.getChildAt(j); 2587 Object tag = view.getTag(); 2588 2589 if (tag instanceof ShortcutInfo) { 2590 final ShortcutInfo info = (ShortcutInfo) tag; 2591 final Intent intent = info.intent; 2592 final ComponentName name = intent.getComponent(); 2593 2594 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2595 for (String packageName: packageNames) { 2596 if (packageName.equals(name.getPackageName())) { 2597 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2598 childrenToRemove.add(view); 2599 } 2600 } 2601 } 2602 } else if (tag instanceof UserFolderInfo) { 2603 final UserFolderInfo info = (UserFolderInfo) tag; 2604 final ArrayList<ShortcutInfo> contents = info.contents; 2605 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2606 final int contentsCount = contents.size(); 2607 boolean removedFromFolder = false; 2608 2609 for (int k = 0; k < contentsCount; k++) { 2610 final ShortcutInfo appInfo = contents.get(k); 2611 final Intent intent = appInfo.intent; 2612 final ComponentName name = intent.getComponent(); 2613 2614 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2615 for (String packageName: packageNames) { 2616 if (packageName.equals(name.getPackageName())) { 2617 toRemove.add(appInfo); 2618 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2619 removedFromFolder = true; 2620 } 2621 } 2622 } 2623 } 2624 2625 contents.removeAll(toRemove); 2626 if (removedFromFolder) { 2627 final Folder folder = getOpenFolder(); 2628 if (folder != null) 2629 folder.notifyDataSetChanged(); 2630 } 2631 } else if (tag instanceof LiveFolderInfo) { 2632 final LiveFolderInfo info = (LiveFolderInfo) tag; 2633 final Uri uri = info.uri; 2634 final ProviderInfo providerInfo = manager.resolveContentProvider( 2635 uri.getAuthority(), 0); 2636 2637 if (providerInfo != null) { 2638 for (String packageName: packageNames) { 2639 if (packageName.equals(providerInfo.packageName)) { 2640 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2641 childrenToRemove.add(view); 2642 } 2643 } 2644 } 2645 } else if (tag instanceof LauncherAppWidgetInfo) { 2646 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2647 final AppWidgetProviderInfo provider = 2648 widgets.getAppWidgetInfo(info.appWidgetId); 2649 if (provider != null) { 2650 for (String packageName: packageNames) { 2651 if (packageName.equals(provider.provider.getPackageName())) { 2652 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2653 childrenToRemove.add(view); 2654 } 2655 } 2656 } 2657 } 2658 } 2659 2660 childCount = childrenToRemove.size(); 2661 for (int j = 0; j < childCount; j++) { 2662 View child = childrenToRemove.get(j); 2663 layout.removeViewInLayout(child); 2664 if (child instanceof DropTarget) { 2665 mDragController.removeDropTarget((DropTarget)child); 2666 } 2667 } 2668 2669 if (childCount > 0) { 2670 layout.requestLayout(); 2671 layout.invalidate(); 2672 } 2673 } 2674 }); 2675 } 2676 } 2677 2678 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2679 final int screenCount = getChildCount(); 2680 for (int i = 0; i < screenCount; i++) { 2681 final CellLayout layout = (CellLayout) getChildAt(i); 2682 int childCount = layout.getChildCount(); 2683 for (int j = 0; j < childCount; j++) { 2684 final View view = layout.getChildAt(j); 2685 Object tag = view.getTag(); 2686 if (tag instanceof ShortcutInfo) { 2687 ShortcutInfo info = (ShortcutInfo)tag; 2688 // We need to check for ACTION_MAIN otherwise getComponent() might 2689 // return null for some shortcuts (for instance, for shortcuts to 2690 // web pages.) 2691 final Intent intent = info.intent; 2692 final ComponentName name = intent.getComponent(); 2693 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2694 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2695 final int appCount = apps.size(); 2696 for (int k = 0; k < appCount; k++) { 2697 ApplicationInfo app = apps.get(k); 2698 if (app.componentName.equals(name)) { 2699 info.setIcon(mIconCache.getIcon(info.intent)); 2700 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2701 new FastBitmapDrawable(info.getIcon(mIconCache)), 2702 null, null); 2703 } 2704 } 2705 } 2706 } 2707 } 2708 } 2709 } 2710 2711 void moveToDefaultScreen(boolean animate) { 2712 if (mIsSmall || mIsInUnshrinkAnimation) { 2713 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2714 } else if (animate) { 2715 snapToPage(mDefaultPage); 2716 } else { 2717 setCurrentPage(mDefaultPage); 2718 } 2719 getChildAt(mDefaultPage).requestFocus(); 2720 } 2721 2722 void setIndicators(Drawable previous, Drawable next) { 2723 mPreviousIndicator = previous; 2724 mNextIndicator = next; 2725 previous.setLevel(mCurrentPage); 2726 next.setLevel(mCurrentPage); 2727 } 2728 2729 @Override 2730 public void syncPages() { 2731 } 2732 2733 @Override 2734 public void syncPageItems(int page) { 2735 } 2736 2737} 2738