Workspace.java revision e708c5249b26978057acb9370cbfb8f6f747f5b8
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.TimeInterpolator; 27import android.animation.ValueAnimator; 28import android.animation.Animator.AnimatorListener; 29import android.animation.ValueAnimator.AnimatorUpdateListener; 30import android.app.AlertDialog; 31import android.app.WallpaperManager; 32import android.appwidget.AppWidgetManager; 33import android.appwidget.AppWidgetProviderInfo; 34import android.content.ClipData; 35import android.content.ClipDescription; 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.PackageManager; 40import android.content.pm.ProviderInfo; 41import android.content.res.Resources; 42import android.content.res.TypedArray; 43import android.graphics.Bitmap; 44import android.graphics.Camera; 45import android.graphics.Canvas; 46import android.graphics.Matrix; 47import android.graphics.Paint; 48import android.graphics.Rect; 49import android.graphics.RectF; 50import android.graphics.Region.Op; 51import android.graphics.drawable.Drawable; 52import android.net.Uri; 53import android.os.IBinder; 54import android.os.Parcelable; 55import android.util.AttributeSet; 56import android.util.Log; 57import android.util.Pair; 58import android.view.Display; 59import android.view.DragEvent; 60import android.view.MotionEvent; 61import android.view.View; 62import android.view.ViewGroup; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TabHost; 65import android.widget.TabWidget; 66import android.widget.TextView; 67import android.widget.Toast; 68 69import java.util.ArrayList; 70import java.util.HashSet; 71import java.util.List; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 View.OnClickListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // This is how much the workspace shrinks when we enter all apps or 85 // customization mode 86 private static final float SHRINK_FACTOR = 0.16f; 87 88 // How much the screens shrink when we enter spring loaded drag mode 89 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 90 91 // Y rotation to apply to the workspace screens 92 private static final float WORKSPACE_ROTATION = 12.5f; 93 94 // These are extra scale factors to apply to the mini home screens 95 // so as to achieve the desired transform 96 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 97 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 98 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 99 100 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 101 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 102 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 103 104 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 105 private static final int BACKGROUND_FADE_IN_DURATION = 350; 106 107 // These animators are used to fade the children's outlines 108 private ObjectAnimator mChildrenOutlineFadeInAnimation; 109 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 110 private float mChildrenOutlineAlpha = 0; 111 112 // These properties refer to the background protection gradient used for AllApps and Customize 113 private ValueAnimator mBackgroundFadeInAnimation; 114 private ValueAnimator mBackgroundFadeOutAnimation; 115 private Drawable mBackground; 116 private Drawable mCustomizeTrayBackground; 117 private boolean mDrawCustomizeTrayBackground; 118 private float mBackgroundAlpha = 0; 119 private float mOverScrollMaxBackgroundAlpha = 0.0f; 120 private int mOverScrollPageIndex = -1; 121 122 private View mCustomizationDrawer; 123 private View mCustomizationDrawerContent; 124 private int[] mCustomizationDrawerPos = new int[2]; 125 private float[] mCustomizationDrawerTransformedPos = new float[2]; 126 127 private final WallpaperManager mWallpaperManager; 128 129 private int mDefaultPage; 130 131 private boolean mIsDragInProcess = false; 132 133 /** 134 * CellInfo for the cell that is currently being dragged 135 */ 136 private CellLayout.CellInfo mDragInfo; 137 138 /** 139 * Target drop area calculated during last acceptDrop call. 140 */ 141 private int[] mTargetCell = null; 142 143 /** 144 * The CellLayout that is currently being dragged over 145 */ 146 private CellLayout mDragTargetLayout = null; 147 148 private Launcher mLauncher; 149 private IconCache mIconCache; 150 private DragController mDragController; 151 152 // These are temporary variables to prevent having to allocate a new object just to 153 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 154 private int[] mTempCell = new int[2]; 155 private int[] mTempEstimate = new int[2]; 156 private float[] mTempOriginXY = new float[2]; 157 private float[] mTempDragCoordinates = new float[2]; 158 private float[] mTempTouchCoordinates = new float[2]; 159 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 160 private float[] mTempDragBottomRightCoordinates = new float[2]; 161 private Matrix mTempInverseMatrix = new Matrix(); 162 163 private SpringLoadedDragController mSpringLoadedDragController; 164 165 private static final int DEFAULT_CELL_COUNT_X = 4; 166 private static final int DEFAULT_CELL_COUNT_Y = 4; 167 168 private Drawable mPreviousIndicator; 169 private Drawable mNextIndicator; 170 171 // State variable that indicates whether the pages are small (ie when you're 172 // in all apps or customize mode) 173 private boolean mIsSmall = false; 174 private boolean mIsInUnshrinkAnimation = false; 175 private AnimatorListener mShrinkAnimationListener; 176 private AnimatorListener mUnshrinkAnimationListener; 177 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 178 private ShrinkState mShrinkState; 179 private boolean mWasSpringLoadedOnDragExit = false; 180 private boolean mWaitingToShrink = false; 181 private ShrinkState mWaitingToShrinkState; 182 private AnimatorSet mAnimator; 183 184 /** Is the user is dragging an item near the edge of a page? */ 185 private boolean mInScrollArea = false; 186 187 /** If mInScrollArea is true, the direction of the scroll. */ 188 private int mPendingScrollDirection = DragController.SCROLL_NONE; 189 190 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 191 private Bitmap mDragOutline = null; 192 private final Rect mTempRect = new Rect(); 193 private final int[] mTempXY = new int[2]; 194 195 private ValueAnimator mDropAnim = null; 196 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 197 private View mDropView = null; 198 private int[] mDropViewPos = new int[] { -1, -1 }; 199 200 // Paint used to draw external drop outline 201 private final Paint mExternalDragOutlinePaint = new Paint(); 202 203 // Camera and Matrix used to determine the final position of a neighboring CellLayout 204 private final Matrix mMatrix = new Matrix(); 205 private final Camera mCamera = new Camera(); 206 private final float mTempFloat2[] = new float[2]; 207 208 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 209 int mWallpaperWidth; 210 int mWallpaperHeight; 211 WallpaperOffsetInterpolator mWallpaperOffset; 212 boolean mUpdateWallpaperOffsetImmediately = false; 213 boolean mSyncWallpaperOffsetWithScroll = true; 214 215 // info about the last drag 216 private DragView mLastDragView; 217 private int mLastDragOriginX; 218 private int mLastDragOriginY; 219 private int mLastDragXOffset; 220 private int mLastDragYOffset; 221 222 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 223 private float mXDown; 224 private float mYDown; 225 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 226 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 227 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 228 229 /** 230 * Used to inflate the Workspace from XML. 231 * 232 * @param context The application's context. 233 * @param attrs The attributes set containing the Workspace's customization values. 234 */ 235 public Workspace(Context context, AttributeSet attrs) { 236 this(context, attrs, 0); 237 } 238 239 /** 240 * Used to inflate the Workspace from XML. 241 * 242 * @param context The application's context. 243 * @param attrs The attributes set containing the Workspace's customization values. 244 * @param defStyle Unused. 245 */ 246 public Workspace(Context context, AttributeSet attrs, int defStyle) { 247 super(context, attrs, defStyle); 248 mContentIsRefreshable = false; 249 250 if (!LauncherApplication.isScreenXLarge()) { 251 mFadeInAdjacentScreens = false; 252 } 253 254 mWallpaperManager = WallpaperManager.getInstance(context); 255 256 TypedArray a = context.obtainStyledAttributes(attrs, 257 R.styleable.Workspace, defStyle, 0); 258 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 259 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 260 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 261 a.recycle(); 262 263 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 264 setHapticFeedbackEnabled(false); 265 266 initWorkspace(); 267 268 // Disable multitouch across the workspace/all apps/customize tray 269 setMotionEventSplittingEnabled(true); 270 } 271 272 /** 273 * Initializes various states for this workspace. 274 */ 275 protected void initWorkspace() { 276 Context context = getContext(); 277 mCurrentPage = mDefaultPage; 278 Launcher.setScreen(mCurrentPage); 279 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 280 mIconCache = app.getIconCache(); 281 mExternalDragOutlinePaint.setAntiAlias(true); 282 setWillNotDraw(false); 283 284 try { 285 final Resources res = getResources(); 286 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 287 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 288 } catch (Resources.NotFoundException e) { 289 // In this case, we will skip drawing background protection 290 } 291 292 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 293 @Override 294 public void onAnimationStart(Animator animation) { 295 mIsInUnshrinkAnimation = true; 296 } 297 298 @Override 299 public void onAnimationEnd(Animator animation) { 300 mIsInUnshrinkAnimation = false; 301 mSyncWallpaperOffsetWithScroll = true; 302 if (mShrinkState == ShrinkState.SPRING_LOADED) { 303 View layout = null; 304 if (mLastDragView != null) { 305 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 306 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 307 } 308 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 309 } else { 310 mDrawCustomizeTrayBackground = false; 311 } 312 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 313 mAnimator = null; 314 enableChildrenLayers(false); 315 } 316 }; 317 mShrinkAnimationListener = new AnimatorListenerAdapter() { 318 @Override 319 public void onAnimationStart(Animator animation) { 320 enableChildrenLayers(true); 321 } 322 @Override 323 public void onAnimationEnd(Animator animation) { 324 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 325 mAnimator = null; 326 } 327 }; 328 mSnapVelocity = 600; 329 mWallpaperOffset = new WallpaperOffsetInterpolator(); 330 } 331 332 @Override 333 protected int getScrollMode() { 334 if (LauncherApplication.isScreenXLarge()) { 335 return SmoothPagedView.X_LARGE_MODE; 336 } else { 337 return SmoothPagedView.DEFAULT_MODE; 338 } 339 } 340 341 @Override 342 public void addView(View child, int index, LayoutParams params) { 343 if (!(child instanceof CellLayout)) { 344 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 345 } 346 ((CellLayout) child).setOnInterceptTouchListener(this); 347 child.setOnClickListener(this); 348 child.setClickable(true); 349 super.addView(child, index, params); 350 } 351 352 @Override 353 public void addView(View child) { 354 if (!(child instanceof CellLayout)) { 355 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 356 } 357 ((CellLayout) child).setOnInterceptTouchListener(this); 358 child.setOnClickListener(this); 359 child.setClickable(true); 360 super.addView(child); 361 } 362 363 @Override 364 public void addView(View child, int index) { 365 if (!(child instanceof CellLayout)) { 366 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 367 } 368 ((CellLayout) child).setOnInterceptTouchListener(this); 369 child.setOnClickListener(this); 370 child.setClickable(true); 371 super.addView(child, index); 372 } 373 374 @Override 375 public void addView(View child, int width, int height) { 376 if (!(child instanceof CellLayout)) { 377 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 378 } 379 ((CellLayout) child).setOnInterceptTouchListener(this); 380 child.setOnClickListener(this); 381 child.setClickable(true); 382 super.addView(child, width, height); 383 } 384 385 @Override 386 public void addView(View child, LayoutParams params) { 387 if (!(child instanceof CellLayout)) { 388 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 389 } 390 ((CellLayout) child).setOnInterceptTouchListener(this); 391 child.setOnClickListener(this); 392 child.setClickable(true); 393 super.addView(child, params); 394 } 395 396 /** 397 * @return The open folder on the current screen, or null if there is none 398 */ 399 Folder getOpenFolder() { 400 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 401 int count = currentPage.getChildCount(); 402 for (int i = 0; i < count; i++) { 403 View child = currentPage.getChildAt(i); 404 if (child instanceof Folder) { 405 Folder folder = (Folder) child; 406 if (folder.getInfo().opened) 407 return folder; 408 } 409 } 410 return null; 411 } 412 413 ArrayList<Folder> getOpenFolders() { 414 final int screenCount = getChildCount(); 415 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 416 417 for (int screen = 0; screen < screenCount; screen++) { 418 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 419 int count = currentPage.getChildCount(); 420 for (int i = 0; i < count; i++) { 421 View child = currentPage.getChildAt(i); 422 if (child instanceof Folder) { 423 Folder folder = (Folder) child; 424 if (folder.getInfo().opened) 425 folders.add(folder); 426 break; 427 } 428 } 429 } 430 return folders; 431 } 432 433 boolean isTouchActive() { 434 return mTouchState != TOUCH_STATE_REST; 435 } 436 437 /** 438 * Adds the specified child in the specified screen. The position and dimension of 439 * the child are defined by x, y, spanX and spanY. 440 * 441 * @param child The child to add in one of the workspace's screens. 442 * @param screen The screen in which to add the child. 443 * @param x The X position of the child in the screen's grid. 444 * @param y The Y position of the child in the screen's grid. 445 * @param spanX The number of cells spanned horizontally by the child. 446 * @param spanY The number of cells spanned vertically by the child. 447 */ 448 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 449 addInScreen(child, screen, x, y, spanX, spanY, false); 450 } 451 452 void addInFullScreen(View child, int screen) { 453 addInScreen(child, screen, 0, 0, -1, -1); 454 } 455 456 /** 457 * Adds the specified child in the specified screen. The position and dimension of 458 * the child are defined by x, y, spanX and spanY. 459 * 460 * @param child The child to add in one of the workspace's screens. 461 * @param screen The screen in which to add the child. 462 * @param x The X position of the child in the screen's grid. 463 * @param y The Y position of the child in the screen's grid. 464 * @param spanX The number of cells spanned horizontally by the child. 465 * @param spanY The number of cells spanned vertically by the child. 466 * @param insert When true, the child is inserted at the beginning of the children list. 467 */ 468 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 469 if (screen < 0 || screen >= getChildCount()) { 470 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 471 + " (was " + screen + "); skipping child"); 472 return; 473 } 474 475 final CellLayout group = (CellLayout) getChildAt(screen); 476 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 477 if (lp == null) { 478 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 479 } else { 480 lp.cellX = x; 481 lp.cellY = y; 482 lp.cellHSpan = spanX; 483 lp.cellVSpan = spanY; 484 } 485 486 // Get the canonical child id to uniquely represent this view in this screen 487 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 488 boolean markCellsAsOccupied = !(child instanceof Folder); 489 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 490 // TODO: This branch occurs when the workspace is adding views 491 // outside of the defined grid 492 // maybe we should be deleting these items from the LauncherModel? 493 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 494 } 495 496 if (!(child instanceof Folder)) { 497 child.setHapticFeedbackEnabled(false); 498 child.setOnLongClickListener(mLongClickListener); 499 } 500 if (child instanceof DropTarget) { 501 mDragController.addDropTarget((DropTarget) child); 502 } 503 } 504 505 /** 506 * Check if the point (x, y) hits a given page. 507 */ 508 private boolean hitsPage(int index, float x, float y) { 509 final View page = getChildAt(index); 510 if (page != null) { 511 float[] localXY = { x, y }; 512 mapPointFromSelfToChild(page, localXY); 513 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 514 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 515 } 516 return false; 517 } 518 519 @Override 520 protected boolean hitsPreviousPage(float x, float y) { 521 // mNextPage is set to INVALID_PAGE whenever we are stationary. 522 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 523 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 524 return hitsPage(current - 1, x, y); 525 } 526 527 @Override 528 protected boolean hitsNextPage(float x, float y) { 529 // mNextPage is set to INVALID_PAGE whenever we are stationary. 530 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 531 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 532 return hitsPage(current + 1, x, y); 533 } 534 535 /** 536 * Called directly from a CellLayout (not by the framework), after we've been added as a 537 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 538 * that it should intercept touch events, which is not something that is normally supported. 539 */ 540 @Override 541 public boolean onTouch(View v, MotionEvent event) { 542 return (mIsSmall || mIsInUnshrinkAnimation); 543 } 544 545 /** 546 * Handle a click event on a CellLayout. 547 */ 548 @Override 549 public void onClick(View cellLayout) { 550 // Only allow clicks on a CellLayout if it is shrunken and visible. 551 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 552 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 553 } 554 } 555 556 protected void onWindowVisibilityChanged (int visibility) { 557 mLauncher.onWindowVisibilityChanged(visibility); 558 } 559 560 @Override 561 public boolean dispatchUnhandledMove(View focused, int direction) { 562 if (mIsSmall || mIsInUnshrinkAnimation) { 563 // when the home screens are shrunken, shouldn't allow side-scrolling 564 return false; 565 } 566 return super.dispatchUnhandledMove(focused, direction); 567 } 568 569 @Override 570 public boolean onInterceptTouchEvent(MotionEvent ev) { 571 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 572 mXDown = ev.getX(); 573 mYDown = ev.getY(); 574 } 575 576 if (mIsSmall || mIsInUnshrinkAnimation) { 577 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 578 // Intercept this event so we can show the workspace in full view 579 // when it is clicked on and it is small 580 AllAppsPagedView allApps = (AllAppsPagedView) 581 mLauncher.findViewById(R.id.all_apps_paged_view); 582 if (allApps != null) { 583 allApps.onInterceptTouchEvent(ev); 584 } 585 return true; 586 } 587 return false; 588 } 589 return super.onInterceptTouchEvent(ev); 590 } 591 592 @Override 593 protected void determineScrollingStart(MotionEvent ev) { 594 if (!mIsSmall && !mIsInUnshrinkAnimation) { 595 float deltaX = Math.abs(ev.getX() - mXDown); 596 float deltaY = Math.abs(ev.getY() - mYDown); 597 598 if (Float.compare(deltaX, 0f) == 0) return; 599 600 float slope = deltaY / deltaX; 601 float theta = (float) Math.atan(slope); 602 603 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 604 cancelCurrentPageLongPress(); 605 } 606 607 if (theta > MAX_SWIPE_ANGLE) { 608 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 609 return; 610 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 611 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 612 // increase the touch slop to make it harder to begin scrolling the workspace. This 613 // results in vertically scrolling widgets to more easily. The higher the angle, the 614 // more we increase touch slop. 615 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 616 float extraRatio = (float) 617 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 618 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 619 } else { 620 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 621 super.determineScrollingStart(ev); 622 } 623 } 624 } 625 626 protected void onPageBeginMoving() { 627 if (mNextPage != INVALID_PAGE) { 628 // we're snapping to a particular screen 629 enableChildrenCache(mCurrentPage, mNextPage); 630 } else { 631 // this is when user is actively dragging a particular screen, they might 632 // swipe it either left or right (but we won't advance by more than one screen) 633 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 634 } 635 showOutlines(); 636 } 637 638 protected void onPageEndMoving() { 639 clearChildrenCache(); 640 // Hide the outlines, as long as we're not dragging 641 if (!mDragController.dragging()) { 642 hideOutlines(); 643 } 644 mOverScrollMaxBackgroundAlpha = 0.0f; 645 mOverScrollPageIndex = -1; 646 } 647 648 @Override 649 protected void notifyPageSwitchListener() { 650 super.notifyPageSwitchListener(); 651 652 if (mPreviousIndicator != null) { 653 // if we know the next page, we show the indication for it right away; it looks 654 // weird if the indicators are lagging 655 int page = mNextPage; 656 if (page == INVALID_PAGE) { 657 page = mCurrentPage; 658 } 659 mPreviousIndicator.setLevel(page); 660 mNextIndicator.setLevel(page); 661 } 662 Launcher.setScreen(mCurrentPage); 663 }; 664 665 // As a ratio of screen height, the total distance we want the parallax effect to span 666 // vertically 667 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 668 return 1.1f; 669 } 670 671 // As a ratio of screen height, the total distance we want the parallax effect to span 672 // horizontally 673 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 674 float aspectRatio = width / (float) height; 675 676 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 677 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 678 // We will use these two data points to extrapolate how much the wallpaper parallax effect 679 // to span (ie travel) at any aspect ratio: 680 681 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 682 final float ASPECT_RATIO_PORTRAIT = 10/16f; 683 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 684 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 685 686 // To find out the desired width at different aspect ratios, we use the following two 687 // formulas, where the coefficient on x is the aspect ratio (width/height): 688 // (16/10)x + y = 1.5 689 // (10/16)x + y = 1.2 690 // We solve for x and y and end up with a final formula: 691 final float x = 692 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 693 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 694 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 695 return x * aspectRatio + y; 696 } 697 698 // The range of scroll values for Workspace 699 private int getScrollRange() { 700 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 701 } 702 703 protected void setWallpaperDimension() { 704 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 705 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 706 final int minDim = Math.min(display.getWidth(), display.getHeight()); 707 708 // We need to ensure that there is enough extra space in the wallpaper for the intended 709 // parallax effects 710 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 711 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 712 new Thread("setWallpaperDimension") { 713 public void run() { 714 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 715 } 716 }.start(); 717 } 718 719 public void setVerticalWallpaperOffset(float offset) { 720 mWallpaperOffset.setFinalY(offset); 721 } 722 public float getVerticalWallpaperOffset() { 723 return mWallpaperOffset.getCurrY(); 724 } 725 public void setHorizontalWallpaperOffset(float offset) { 726 mWallpaperOffset.setFinalX(offset); 727 } 728 public float getHorizontalWallpaperOffset() { 729 return mWallpaperOffset.getCurrX(); 730 } 731 732 private float wallpaperOffsetForCurrentScroll() { 733 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 734 // The wallpaper travel width is how far, from left to right, the wallpaper will move 735 // at this orientation (for example, in portrait mode we don't move all the way to the 736 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 737 int wallpaperTravelWidth = (int) (display.getWidth() * 738 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 739 740 // Set wallpaper offset steps (1 / (number of screens - 1)) 741 // We have 3 vertical offset states (centered, and then top/bottom aligned 742 // for all apps/customize) 743 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 744 745 int scrollRange = getScrollRange(); 746 float scrollProgressOffset = 0; 747 748 // Account for overscroll: you only see the absolute edge of the wallpaper if 749 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 750 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 751 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 752 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 753 if (isStaticWallpaper) { 754 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 755 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 756 scrollRange += 2 * overscrollOffset; 757 } 758 759 float scrollProgress = 760 mScrollX / (float) scrollRange + scrollProgressOffset; 761 float offsetInDips = wallpaperTravelWidth * scrollProgress + 762 (mWallpaperWidth - wallpaperTravelWidth) / 2; 763 float offset = offsetInDips / (float) mWallpaperWidth; 764 return offset; 765 } 766 private void syncWallpaperOffsetWithScroll() { 767 if (LauncherApplication.isScreenXLarge()) { 768 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 769 } 770 } 771 772 public void updateWallpaperOffsetImmediately() { 773 mUpdateWallpaperOffsetImmediately = true; 774 } 775 776 private void updateWallpaperOffsets() { 777 boolean updateNow = false; 778 boolean keepUpdating = true; 779 if (mUpdateWallpaperOffsetImmediately) { 780 updateNow = true; 781 keepUpdating = false; 782 mWallpaperOffset.jumpToFinal(); 783 mUpdateWallpaperOffsetImmediately = false; 784 } else { 785 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 786 } 787 if (updateNow) { 788 IBinder token = getWindowToken(); 789 if (token != null) { 790 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 791 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 792 } 793 } 794 if (keepUpdating) { 795 invalidate(); 796 } 797 } 798 799 class WallpaperOffsetInterpolator { 800 float mFinalHorizontalWallpaperOffset = 0.0f; 801 float mFinalVerticalWallpaperOffset = 0.5f; 802 float mHorizontalWallpaperOffset = 0.0f; 803 float mVerticalWallpaperOffset = 0.5f; 804 long mLastWallpaperOffsetUpdateTime; 805 boolean mIsMovingFast; 806 boolean mOverrideHorizontalCatchupConstant; 807 float mHorizontalCatchupConstant = 0.35f; 808 float mVerticalCatchupConstant = 0.35f; 809 810 public WallpaperOffsetInterpolator() { 811 } 812 813 public void setOverrideHorizontalCatchupConstant(boolean override) { 814 mOverrideHorizontalCatchupConstant = override; 815 } 816 817 public void setHorizontalCatchupConstant(float f) { 818 mHorizontalCatchupConstant = f; 819 } 820 821 public void setVerticalCatchupConstant(float f) { 822 mVerticalCatchupConstant = f; 823 } 824 825 public boolean computeScrollOffset() { 826 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 827 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 828 mIsMovingFast = false; 829 return false; 830 } 831 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 832 boolean isLandscape = display.getWidth() > display.getHeight(); 833 834 long currentTime = System.currentTimeMillis(); 835 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 836 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 837 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 838 839 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 840 if (!mIsMovingFast && xdiff > 0.07) { 841 mIsMovingFast = true; 842 } 843 844 float fractionToCatchUpIn1MsHorizontal; 845 if (mOverrideHorizontalCatchupConstant) { 846 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 847 } else if (mIsMovingFast) { 848 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 849 } else { 850 // slow 851 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 852 } 853 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 854 855 856 fractionToCatchUpIn1MsHorizontal /= 33f; 857 fractionToCatchUpIn1MsVertical /= 33f; 858 859 final float UPDATE_THRESHOLD = 0.00001f; 860 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 861 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 862 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 863 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 864 if (jumpToFinalValue) { 865 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 866 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 867 } else { 868 float percentToCatchUpVertical = 869 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 870 float percentToCatchUpHorizontal = 871 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 872 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 873 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 874 } 875 876 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 877 return true; 878 } 879 880 public float getCurrX() { 881 return mHorizontalWallpaperOffset; 882 } 883 884 public float getFinalX() { 885 return mFinalHorizontalWallpaperOffset; 886 } 887 888 public float getCurrY() { 889 return mVerticalWallpaperOffset; 890 } 891 892 public float getFinalY() { 893 return mFinalVerticalWallpaperOffset; 894 } 895 896 public void setFinalX(float x) { 897 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 898 } 899 900 public void setFinalY(float y) { 901 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 902 } 903 904 public void jumpToFinal() { 905 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 906 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 907 } 908 } 909 910 @Override 911 public void computeScroll() { 912 super.computeScroll(); 913 if (mSyncWallpaperOffsetWithScroll) { 914 syncWallpaperOffsetWithScroll(); 915 } 916 } 917 918 void showOutlines() { 919 if (!mIsSmall && !mIsInUnshrinkAnimation) { 920 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 921 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 922 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 923 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 924 mChildrenOutlineFadeInAnimation.start(); 925 } 926 } 927 928 void hideOutlines() { 929 if (!mIsSmall && !mIsInUnshrinkAnimation) { 930 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 931 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 932 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 933 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 934 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 935 mChildrenOutlineFadeOutAnimation.start(); 936 } 937 } 938 939 public void showOutlinesTemporarily() { 940 if (!mIsPageMoving && !isTouchActive()) { 941 snapToPage(mCurrentPage); 942 } 943 } 944 945 public void setChildrenOutlineAlpha(float alpha) { 946 mChildrenOutlineAlpha = alpha; 947 for (int i = 0; i < getChildCount(); i++) { 948 CellLayout cl = (CellLayout) getChildAt(i); 949 cl.setBackgroundAlpha(alpha); 950 } 951 } 952 953 public float getChildrenOutlineAlpha() { 954 return mChildrenOutlineAlpha; 955 } 956 957 private void showBackgroundGradientForAllApps() { 958 showBackgroundGradient(); 959 mDrawCustomizeTrayBackground = false; 960 } 961 962 private void showBackgroundGradientForCustomizeTray() { 963 showBackgroundGradient(); 964 mDrawCustomizeTrayBackground = true; 965 } 966 967 private void showBackgroundGradient() { 968 if (mBackground == null) return; 969 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 970 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 971 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 972 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 973 public void onAnimationUpdate(ValueAnimator animation) { 974 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 975 } 976 }); 977 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 978 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 979 mBackgroundFadeInAnimation.start(); 980 } 981 982 private void hideBackgroundGradient() { 983 if (mBackground == null) return; 984 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 985 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 986 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 987 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 988 public void onAnimationUpdate(ValueAnimator animation) { 989 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 990 } 991 }); 992 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 993 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 994 mBackgroundFadeOutAnimation.start(); 995 } 996 997 public void setBackgroundAlpha(float alpha) { 998 mBackgroundAlpha = alpha; 999 invalidate(); 1000 } 1001 1002 public float getBackgroundAlpha() { 1003 return mBackgroundAlpha; 1004 } 1005 1006 /** 1007 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1008 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1009 * as being larger. This method computes what offset the rotated view should be translated 1010 * in order to minimize this perceived gap. 1011 * @param degrees Angle of the view 1012 * @param width Width of the view 1013 * @param height Height of the view 1014 * @return Offset to be used in a View.setTranslationX() call 1015 */ 1016 private float getOffsetXForRotation(float degrees, int width, int height) { 1017 mMatrix.reset(); 1018 mCamera.save(); 1019 mCamera.rotateY(Math.abs(degrees)); 1020 mCamera.getMatrix(mMatrix); 1021 mCamera.restore(); 1022 1023 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1024 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1025 mTempFloat2[0] = width; 1026 mTempFloat2[1] = height; 1027 mMatrix.mapPoints(mTempFloat2); 1028 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1029 } 1030 1031 float backgroundAlphaInterpolator(float r) { 1032 float pivotA = 0.1f; 1033 float pivotB = 0.4f; 1034 if (r < pivotA) { 1035 return 0; 1036 } else if (r > pivotB) { 1037 return 1.0f; 1038 } else { 1039 return (r - pivotA)/(pivotB - pivotA); 1040 } 1041 } 1042 1043 float overScrollBackgroundAlphaInterpolator(float r) { 1044 float threshold = 0.08f; 1045 1046 if (r > mOverScrollMaxBackgroundAlpha) { 1047 mOverScrollMaxBackgroundAlpha = r; 1048 } else if (r < mOverScrollMaxBackgroundAlpha) { 1049 r = mOverScrollMaxBackgroundAlpha; 1050 } 1051 1052 return Math.min(r / threshold, 1.0f); 1053 } 1054 1055 @Override 1056 protected void screenScrolled(int screenCenter) { 1057 final int halfScreenSize = getMeasuredWidth() / 2; 1058 1059 for (int i = 0; i < getChildCount(); i++) { 1060 CellLayout cl = (CellLayout) getChildAt(i); 1061 if (cl != null) { 1062 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1063 int delta = screenCenter - (getChildOffset(i) - 1064 getRelativeChildOffset(i) + halfScreenSize); 1065 1066 float scrollProgress = delta / (totalDistance * 1.0f); 1067 scrollProgress = Math.min(scrollProgress, 1.0f); 1068 scrollProgress = Math.max(scrollProgress, -1.0f); 1069 1070 // If the current page (i) is being overscrolled, we use a different 1071 // set of rules for setting the background alpha multiplier. 1072 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1073 i == getChildCount() -1 )) { 1074 cl.setBackgroundAlphaMultiplier( 1075 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1076 mOverScrollPageIndex = i; 1077 } else if (mOverScrollPageIndex != i) { 1078 cl.setBackgroundAlphaMultiplier( 1079 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1080 } 1081 1082 float rotation = WORKSPACE_ROTATION * scrollProgress; 1083 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1084 cl.setTranslationX(translationX); 1085 1086 cl.setRotationY(rotation); 1087 } 1088 } 1089 } 1090 1091 protected void onAttachedToWindow() { 1092 super.onAttachedToWindow(); 1093 computeScroll(); 1094 mDragController.setWindowToken(getWindowToken()); 1095 } 1096 1097 @Override 1098 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1099 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1100 mUpdateWallpaperOffsetImmediately = true; 1101 } 1102 super.onLayout(changed, left, top, right, bottom); 1103 1104 // if shrinkToBottom() is called on initialization, it has to be deferred 1105 // until after the first call to onLayout so that it has the correct width 1106 if (mWaitingToShrink) { 1107 // shrink can trigger a synchronous onLayout call, so we 1108 // post this to avoid a stack overflow / tangled onLayout calls 1109 post(new Runnable() { 1110 public void run() { 1111 shrink(mWaitingToShrinkState, false); 1112 mWaitingToShrink = false; 1113 } 1114 }); 1115 } 1116 1117 if (LauncherApplication.isInPlaceRotationEnabled()) { 1118 // When the device is rotated, the scroll position of the current screen 1119 // needs to be refreshed 1120 setCurrentPage(getCurrentPage()); 1121 } 1122 } 1123 1124 @Override 1125 protected void onDraw(Canvas canvas) { 1126 updateWallpaperOffsets(); 1127 1128 // Draw the background gradient if necessary 1129 if (mBackground != null && mBackgroundAlpha > 0.0f) { 1130 int alpha = (int) (mBackgroundAlpha * 255); 1131 if (mDrawCustomizeTrayBackground) { 1132 // Find out where to offset the gradient for the customization tray content 1133 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1134 final Matrix m = mCustomizationDrawer.getMatrix(); 1135 mCustomizationDrawerTransformedPos[0] = 0.0f; 1136 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1137 m.mapPoints(mCustomizationDrawerTransformedPos); 1138 1139 // Draw the bg glow behind the gradient 1140 mCustomizeTrayBackground.setAlpha(alpha); 1141 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1142 getMeasuredHeight()); 1143 mCustomizeTrayBackground.draw(canvas); 1144 1145 // Draw the bg gradient 1146 final int offset = (int) (mCustomizationDrawerPos[1] + 1147 mCustomizationDrawerTransformedPos[1]); 1148 mBackground.setAlpha(alpha); 1149 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1150 offset + getMeasuredHeight()); 1151 mBackground.draw(canvas); 1152 } else { 1153 mBackground.setAlpha(alpha); 1154 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1155 getMeasuredHeight()); 1156 mBackground.draw(canvas); 1157 } 1158 } 1159 super.onDraw(canvas); 1160 } 1161 1162 @Override 1163 protected void dispatchDraw(Canvas canvas) { 1164 if (mIsSmall || mIsInUnshrinkAnimation) { 1165 // Draw all the workspaces if we're small 1166 final int pageCount = getChildCount(); 1167 final long drawingTime = getDrawingTime(); 1168 for (int i = 0; i < pageCount; i++) { 1169 final View page = (View) getChildAt(i); 1170 1171 drawChild(canvas, page, drawingTime); 1172 } 1173 } else { 1174 super.dispatchDraw(canvas); 1175 1176 final int width = getWidth(); 1177 final int height = getHeight(); 1178 1179 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1180 if (mInScrollArea && (height > width)) { 1181 final int pageHeight = getChildAt(0).getHeight(); 1182 1183 // This determines the height of the glowing edge: 90% of the page height 1184 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1185 1186 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1187 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1188 1189 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1190 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1191 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1192 d.draw(canvas); 1193 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1194 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1195 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1196 d.draw(canvas); 1197 } 1198 } 1199 1200 if (mDropView != null) { 1201 // We are animating an item that was just dropped on the home screen. 1202 // Render its View in the current animation position. 1203 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1204 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1205 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1206 canvas.translate(xPos, yPos); 1207 mDropView.draw(canvas); 1208 canvas.restore(); 1209 } 1210 } 1211 } 1212 1213 @Override 1214 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1215 if (!mLauncher.isAllAppsVisible()) { 1216 final Folder openFolder = getOpenFolder(); 1217 if (openFolder != null) { 1218 return openFolder.requestFocus(direction, previouslyFocusedRect); 1219 } else { 1220 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1221 } 1222 } 1223 return false; 1224 } 1225 1226 @Override 1227 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1228 if (!mLauncher.isAllAppsVisible()) { 1229 final Folder openFolder = getOpenFolder(); 1230 if (openFolder != null) { 1231 openFolder.addFocusables(views, direction); 1232 } else { 1233 super.addFocusables(views, direction, focusableMode); 1234 } 1235 } 1236 } 1237 1238 @Override 1239 public boolean dispatchTouchEvent(MotionEvent ev) { 1240 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1241 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1242 // ie when you click on a mini-screen, it zooms back to that screen) 1243 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1244 return false; 1245 } 1246 } 1247 1248 return super.dispatchTouchEvent(ev); 1249 } 1250 1251 void enableChildrenCache(int fromPage, int toPage) { 1252 if (fromPage > toPage) { 1253 final int temp = fromPage; 1254 fromPage = toPage; 1255 toPage = temp; 1256 } 1257 1258 final int screenCount = getChildCount(); 1259 1260 fromPage = Math.max(fromPage, 0); 1261 toPage = Math.min(toPage, screenCount - 1); 1262 1263 for (int i = fromPage; i <= toPage; i++) { 1264 final CellLayout layout = (CellLayout) getChildAt(i); 1265 layout.setChildrenDrawnWithCacheEnabled(true); 1266 layout.setChildrenDrawingCacheEnabled(true); 1267 } 1268 } 1269 1270 void clearChildrenCache() { 1271 final int screenCount = getChildCount(); 1272 for (int i = 0; i < screenCount; i++) { 1273 final CellLayout layout = (CellLayout) getChildAt(i); 1274 layout.setChildrenDrawnWithCacheEnabled(false); 1275 } 1276 } 1277 1278 @Override 1279 public boolean onTouchEvent(MotionEvent ev) { 1280 AllAppsPagedView allApps = (AllAppsPagedView) 1281 mLauncher.findViewById(R.id.all_apps_paged_view); 1282 1283 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1284 && allApps != null) { 1285 if (ev.getAction() == MotionEvent.ACTION_UP && 1286 allApps.getTouchState() == TOUCH_STATE_REST) { 1287 1288 // Cancel any scrolling that is in progress. 1289 if (!mScroller.isFinished()) { 1290 mScroller.abortAnimation(); 1291 } 1292 setCurrentPage(mCurrentPage); 1293 1294 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1295 mLauncher.showWorkspace(true); 1296 } 1297 allApps.onTouchEvent(ev); 1298 return true; 1299 } else { 1300 return allApps.onTouchEvent(ev); 1301 } 1302 } 1303 return super.onTouchEvent(ev); 1304 } 1305 1306 protected void enableChildrenLayers(boolean enable) { 1307 for (int i = 0; i < getPageCount(); i++) { 1308 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1309 } 1310 } 1311 @Override 1312 protected void pageBeginMoving() { 1313 enableChildrenLayers(true); 1314 super.pageBeginMoving(); 1315 } 1316 1317 @Override 1318 protected void pageEndMoving() { 1319 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1320 enableChildrenLayers(false); 1321 } 1322 super.pageEndMoving(); 1323 } 1324 1325 @Override 1326 protected void onWallpaperTap(MotionEvent ev) { 1327 final int[] position = mTempCell; 1328 getLocationOnScreen(position); 1329 1330 int pointerIndex = ev.getActionIndex(); 1331 position[0] += (int) ev.getX(pointerIndex); 1332 position[1] += (int) ev.getY(pointerIndex); 1333 1334 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1335 ev.getAction() == MotionEvent.ACTION_UP 1336 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1337 position[0], position[1], 0, null); 1338 } 1339 1340 public boolean isSmall() { 1341 return mIsSmall; 1342 } 1343 1344 private float getYScaleForScreen(int screen) { 1345 int x = Math.abs(screen - 2); 1346 1347 // TODO: This should be generalized for use with arbitrary rotation angles. 1348 switch(x) { 1349 case 0: return EXTRA_SCALE_FACTOR_0; 1350 case 1: return EXTRA_SCALE_FACTOR_1; 1351 case 2: return EXTRA_SCALE_FACTOR_2; 1352 } 1353 return 1.0f; 1354 } 1355 1356 public void shrink(ShrinkState shrinkState) { 1357 shrink(shrinkState, true); 1358 } 1359 1360 private int getCustomizeDrawerHeight() { 1361 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1362 int height = customizationDrawer.getHeight(); 1363 TabWidget tabWidget = (TabWidget) 1364 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1365 if (tabWidget.getTabCount() > 0) { 1366 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1367 // subtract the empty space above the tab text 1368 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1369 } 1370 return height; 1371 } 1372 1373 // we use this to shrink the workspace for the all apps view and the customize view 1374 public void shrink(ShrinkState shrinkState, boolean animated) { 1375 // In the launcher interaction model, we're never in the state where we're shrunken and 1376 // visible in the bottom of the screen, and then want to fade to being invisible. 1377 // After spring loaded mode ends, this method was getting called twice, the first time 1378 // with BOTTOM_VISIBLE (what we want) and a second time with BOTTOM_INVISIBLE (not 1379 // what we want). As a temporary solution, we just change the second call to BOTTOM_VISIBLE 1380 if (mIsSmall && mShrinkState == ShrinkState.BOTTOM_VISIBLE) { 1381 shrinkState = ShrinkState.BOTTOM_VISIBLE; 1382 } 1383 if (mFirstLayout) { 1384 // (mFirstLayout == "first layout has not happened yet") 1385 // if we get a call to shrink() as part of our initialization (for example, if 1386 // Launcher is started in All Apps mode) then we need to wait for a layout call 1387 // to get our width so we can layout the mini-screen views correctly 1388 mWaitingToShrink = true; 1389 mWaitingToShrinkState = shrinkState; 1390 return; 1391 } 1392 // Stop any scrolling, move to the current page right away 1393 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1394 if (!mIsDragInProcess) { 1395 updateWhichPagesAcceptDrops(shrinkState); 1396 } 1397 1398 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1399 if (currentPage == null) { 1400 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1401 + " mNextPage " + mNextPage); 1402 return; 1403 } 1404 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1405 currentPage.setBackgroundAlpha(0.0f); 1406 } 1407 currentPage.setBackgroundAlphaMultiplier(1.0f); 1408 1409 mIsSmall = true; 1410 mShrinkState = shrinkState; 1411 1412 // we intercept and reject all touch events when we're small, so be sure to reset the state 1413 mTouchState = TOUCH_STATE_REST; 1414 mActivePointerId = INVALID_POINTER; 1415 1416 final Resources res = getResources(); 1417 final int screenWidth = getWidth(); 1418 final int screenHeight = getHeight(); 1419 1420 // Making the assumption that all pages have the same width as the 0th 1421 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1422 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1423 1424 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1425 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1426 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1427 1428 final int screenCount = getChildCount(); 1429 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1430 1431 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1432 float y = (isPortrait ? 1433 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1434 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1435 float finalAlpha = 1.0f; 1436 float extraShrinkFactor = 1.0f; 1437 1438 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1439 y = screenHeight - y - scaledPageHeight; 1440 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1441 // We shrink and disappear to nothing in the case of all apps 1442 // (which is when we shrink to the bottom) 1443 y = screenHeight - y - scaledPageHeight; 1444 finalAlpha = 0.0f; 1445 } else if (shrinkState == ShrinkState.MIDDLE) { 1446 y = screenHeight / 2 - scaledPageHeight / 2; 1447 finalAlpha = 1.0f; 1448 } else if (shrinkState == ShrinkState.TOP) { 1449 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1450 } 1451 1452 int duration; 1453 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1454 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1455 } else { 1456 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1457 } 1458 1459 // We animate all the screens to the centered position in workspace 1460 // At the same time, the screens become greyed/dimmed 1461 1462 // newX is initialized to the left-most position of the centered screens 1463 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1464 1465 // We are going to scale about the center of the view, so we need to adjust the positions 1466 // of the views accordingly 1467 x -= (pageWidth - scaledPageWidth) / 2.0f; 1468 y -= (pageHeight - scaledPageHeight) / 2.0f; 1469 1470 if (mAnimator != null) { 1471 mAnimator.cancel(); 1472 } 1473 1474 mAnimator = new AnimatorSet(); 1475 1476 final float[] oldXs = new float[getChildCount()]; 1477 final float[] oldYs = new float[getChildCount()]; 1478 final float[] oldScaleXs = new float[getChildCount()]; 1479 final float[] oldScaleYs = new float[getChildCount()]; 1480 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1481 final float[] oldAlphas = new float[getChildCount()]; 1482 final float[] oldRotationYs = new float[getChildCount()]; 1483 final float[] newXs = new float[getChildCount()]; 1484 final float[] newYs = new float[getChildCount()]; 1485 final float[] newScaleXs = new float[getChildCount()]; 1486 final float[] newScaleYs = new float[getChildCount()]; 1487 final float[] newBackgroundAlphas = new float[getChildCount()]; 1488 final float[] newAlphas = new float[getChildCount()]; 1489 final float[] newRotationYs = new float[getChildCount()]; 1490 1491 for (int i = 0; i < screenCount; i++) { 1492 final CellLayout cl = (CellLayout) getChildAt(i); 1493 1494 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1495 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1496 float rotationScaleY = getYScaleForScreen(i); 1497 1498 oldAlphas[i] = cl.getAlpha(); 1499 newAlphas[i] = finalAlpha; 1500 if (animated) { 1501 oldXs[i] = cl.getX(); 1502 oldYs[i] = cl.getY(); 1503 oldScaleXs[i] = cl.getScaleX(); 1504 oldScaleYs[i] = cl.getScaleY(); 1505 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1506 oldRotationYs[i] = cl.getRotationY(); 1507 newXs[i] = x; 1508 newYs[i] = y; 1509 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1510 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1511 newBackgroundAlphas[i] = finalAlpha; 1512 newRotationYs[i] = rotation; 1513 } else { 1514 cl.setX((int)x); 1515 cl.setY((int)y); 1516 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1517 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1518 cl.setBackgroundAlpha(finalAlpha); 1519 cl.setAlpha(finalAlpha); 1520 cl.setRotationY(rotation); 1521 mShrinkAnimationListener.onAnimationEnd(null); 1522 } 1523 // increment newX for the next screen 1524 x += scaledPageWidth + extraScaledSpacing; 1525 } 1526 1527 float wallpaperOffset = 0.5f; 1528 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1529 int wallpaperTravelHeight = (int) (display.getHeight() * 1530 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1531 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1532 boolean isLandscape = display.getWidth() > display.getHeight(); 1533 1534 switch (shrinkState) { 1535 // animating in 1536 case TOP: 1537 // customize 1538 wallpaperOffset = 0.5f + offsetFromCenter; 1539 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1540 break; 1541 case MIDDLE: 1542 case SPRING_LOADED: 1543 wallpaperOffset = 0.5f; 1544 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1545 break; 1546 case BOTTOM_HIDDEN: 1547 case BOTTOM_VISIBLE: 1548 // allapps 1549 wallpaperOffset = 0.5f - offsetFromCenter; 1550 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1551 break; 1552 } 1553 1554 setLayoutScale(1.0f); 1555 if (animated) { 1556 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1557 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1558 1559 mSyncWallpaperOffsetWithScroll = false; 1560 1561 ValueAnimator animWithInterpolator = 1562 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1563 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1564 1565 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1566 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1567 final float newHorizontalWallpaperOffset = 0.5f; 1568 final float newVerticalWallpaperOffset = wallpaperOffset; 1569 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1570 public void onAnimationUpdate(ValueAnimator animation) { 1571 final float b = (Float) animation.getAnimatedValue(); 1572 final float a = 1f - b; 1573 if (b == 0f) { 1574 // an optimization, and required for correct behavior. 1575 return; 1576 } 1577 fastInvalidate(); 1578 setHorizontalWallpaperOffset( 1579 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1580 setVerticalWallpaperOffset( 1581 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1582 for (int i = 0; i < screenCount; i++) { 1583 final CellLayout cl = (CellLayout) getChildAt(i); 1584 cl.fastInvalidate(); 1585 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1586 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1587 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1588 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1589 cl.setFastBackgroundAlpha( 1590 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1591 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1592 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1593 } 1594 } 1595 }); 1596 mAnimator.playTogether(animWithInterpolator); 1597 mAnimator.addListener(mShrinkAnimationListener); 1598 mAnimator.start(); 1599 } else { 1600 setVerticalWallpaperOffset(wallpaperOffset); 1601 setHorizontalWallpaperOffset(0.5f); 1602 updateWallpaperOffsetImmediately(); 1603 } 1604 setChildrenDrawnWithCacheEnabled(true); 1605 1606 if (shrinkState == ShrinkState.TOP) { 1607 showBackgroundGradientForCustomizeTray(); 1608 } else { 1609 showBackgroundGradientForAllApps(); 1610 } 1611 } 1612 1613 /* 1614 * This interpolator emulates the rate at which the perceived scale of an object changes 1615 * as its distance from a camera increases. When this interpolator is applied to a scale 1616 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1617 * from the camera. 1618 */ 1619 static class ZInterpolator implements TimeInterpolator { 1620 private float focalLength; 1621 1622 public ZInterpolator(float foc) { 1623 focalLength = foc; 1624 } 1625 1626 public float getInterpolation(float input) { 1627 return (1.0f - focalLength / (focalLength + input)) / 1628 (1.0f - focalLength / (focalLength + 1.0f)); 1629 } 1630 } 1631 1632 /* 1633 * The exact reverse of ZInterpolator. 1634 */ 1635 static class InverseZInterpolator implements TimeInterpolator { 1636 private ZInterpolator zInterpolator; 1637 public InverseZInterpolator(float foc) { 1638 zInterpolator = new ZInterpolator(foc); 1639 } 1640 public float getInterpolation(float input) { 1641 return 1 - zInterpolator.getInterpolation(1 - input); 1642 } 1643 } 1644 1645 /* 1646 * ZInterpolator compounded with an ease-out. 1647 */ 1648 static class ZoomOutInterpolator implements TimeInterpolator { 1649 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1650 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1651 1652 public float getInterpolation(float input) { 1653 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1654 } 1655 } 1656 1657 /* 1658 * InvereZInterpolator compounded with an ease-out. 1659 */ 1660 static class ZoomInInterpolator implements TimeInterpolator { 1661 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1662 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1663 1664 public float getInterpolation(float input) { 1665 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1666 } 1667 } 1668 1669 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1670 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1671 1672 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1673 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1674 } 1675 1676 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1677 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1678 } 1679 1680 private void updateWhichPagesAcceptDropsHelper( 1681 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1682 final int screenCount = getChildCount(); 1683 for (int i = 0; i < screenCount; i++) { 1684 CellLayout cl = (CellLayout) getChildAt(i); 1685 cl.setIsDragOccuring(isDragHappening); 1686 switch (state) { 1687 case TOP: 1688 cl.setIsDefaultDropTarget(i == mCurrentPage); 1689 case BOTTOM_HIDDEN: 1690 case BOTTOM_VISIBLE: 1691 case SPRING_LOADED: 1692 if (state != ShrinkState.TOP) { 1693 cl.setIsDefaultDropTarget(false); 1694 } 1695 if (!isDragHappening) { 1696 // even if a drag isn't happening, we don't want to show a screen as 1697 // accepting drops if it doesn't have at least one free cell 1698 spanX = 1; 1699 spanY = 1; 1700 } 1701 // the page accepts drops if we can find at least one empty spot 1702 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1703 break; 1704 default: 1705 throw new RuntimeException("Unhandled ShrinkState " + state); 1706 } 1707 } 1708 } 1709 1710 /* 1711 * 1712 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1713 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1714 * 1715 * These methods mark the appropriate pages as accepting drops (which alters their visual 1716 * appearance). 1717 * 1718 */ 1719 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1720 mIsDragInProcess = true; 1721 1722 final Canvas canvas = new Canvas(); 1723 1724 // We need to add extra padding to the bitmap to make room for the glow effect 1725 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1726 1727 CellLayout cl = (CellLayout) getChildAt(0); 1728 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1729 // The outline is used to visualize where the item will land if dropped 1730 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1731 1732 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1733 } 1734 1735 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1736 // never dragged over 1737 public void onDragStopped(boolean success) { 1738 mLastDragView = null; 1739 // In the success case, DragController has already called onDragExit() 1740 if (!success) { 1741 doDragExit(); 1742 } 1743 mIsDragInProcess = false; 1744 updateWhichPagesAcceptDrops(mShrinkState); 1745 } 1746 1747 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1748 public void unshrink(CellLayout clThatWasClicked) { 1749 unshrink(clThatWasClicked, false); 1750 } 1751 1752 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1753 int newCurrentPage = indexOfChild(clThatWasClicked); 1754 if (mIsSmall) { 1755 if (springLoaded) { 1756 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1757 } 1758 scrollToNewPageWithoutMovingPages(newCurrentPage); 1759 unshrink(true, springLoaded); 1760 } 1761 } 1762 1763 1764 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1765 mShrinkState = ShrinkState.SPRING_LOADED; 1766 unshrink(clThatWasClicked, true); 1767 mDragTargetLayout.onDragEnter(); 1768 } 1769 1770 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1771 shrink(shrinkState); 1772 if (mDragTargetLayout != null) { 1773 mDragTargetLayout.onDragExit(); 1774 } 1775 } 1776 1777 void unshrink(boolean animated) { 1778 unshrink(animated, false); 1779 } 1780 1781 void unshrink(boolean animated, boolean springLoaded) { 1782 mWaitingToShrink = false; 1783 if (mIsSmall) { 1784 float finalScaleFactor = 1.0f; 1785 float finalBackgroundAlpha = 0.0f; 1786 if (springLoaded) { 1787 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1788 finalBackgroundAlpha = 1.0f; 1789 } else { 1790 mIsSmall = false; 1791 } 1792 if (mAnimator != null) { 1793 mAnimator.cancel(); 1794 } 1795 1796 mAnimator = new AnimatorSet(); 1797 final int screenCount = getChildCount(); 1798 1799 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1800 1801 final float[] oldTranslationXs = new float[getChildCount()]; 1802 final float[] oldTranslationYs = new float[getChildCount()]; 1803 final float[] oldScaleXs = new float[getChildCount()]; 1804 final float[] oldScaleYs = new float[getChildCount()]; 1805 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1806 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1807 final float[] oldAlphas = new float[getChildCount()]; 1808 final float[] oldRotationYs = new float[getChildCount()]; 1809 final float[] newTranslationXs = new float[getChildCount()]; 1810 final float[] newTranslationYs = new float[getChildCount()]; 1811 final float[] newScaleXs = new float[getChildCount()]; 1812 final float[] newScaleYs = new float[getChildCount()]; 1813 final float[] newBackgroundAlphas = new float[getChildCount()]; 1814 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1815 final float[] newAlphas = new float[getChildCount()]; 1816 final float[] newRotationYs = new float[getChildCount()]; 1817 1818 for (int i = 0; i < screenCount; i++) { 1819 final CellLayout cl = (CellLayout)getChildAt(i); 1820 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1821 float finalAlphaMultiplierValue = 1822 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1823 0.0f : 1.0f; 1824 float rotation = 0.0f; 1825 1826 if (i < mCurrentPage) { 1827 rotation = WORKSPACE_ROTATION; 1828 } else if (i > mCurrentPage) { 1829 rotation = -WORKSPACE_ROTATION; 1830 } 1831 1832 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1833 1834 oldAlphas[i] = cl.getAlpha(); 1835 newAlphas[i] = finalAlphaValue; 1836 if (animated) { 1837 oldTranslationXs[i] = cl.getTranslationX(); 1838 oldTranslationYs[i] = cl.getTranslationY(); 1839 oldScaleXs[i] = cl.getScaleX(); 1840 oldScaleYs[i] = cl.getScaleY(); 1841 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1842 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1843 oldRotationYs[i] = cl.getRotationY(); 1844 1845 newTranslationXs[i] = translation; 1846 newTranslationYs[i] = 0f; 1847 newScaleXs[i] = finalScaleFactor; 1848 newScaleYs[i] = finalScaleFactor; 1849 newBackgroundAlphas[i] = finalBackgroundAlpha; 1850 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1851 newRotationYs[i] = rotation; 1852 } else { 1853 cl.setTranslationX(translation); 1854 cl.setTranslationY(0.0f); 1855 cl.setScaleX(finalScaleFactor); 1856 cl.setScaleY(finalScaleFactor); 1857 cl.setBackgroundAlpha(0.0f); 1858 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1859 cl.setAlpha(finalAlphaValue); 1860 cl.setRotationY(rotation); 1861 mUnshrinkAnimationListener.onAnimationEnd(null); 1862 } 1863 } 1864 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1865 boolean isLandscape = display.getWidth() > display.getHeight(); 1866 switch (mShrinkState) { 1867 // animating out 1868 case TOP: 1869 // customize 1870 if (animated) { 1871 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1872 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1873 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1874 } 1875 break; 1876 case MIDDLE: 1877 case SPRING_LOADED: 1878 if (animated) { 1879 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1880 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1881 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1882 } 1883 break; 1884 case BOTTOM_HIDDEN: 1885 case BOTTOM_VISIBLE: 1886 // all apps 1887 if (animated) { 1888 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1889 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1890 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1891 } 1892 break; 1893 } 1894 if (animated) { 1895 ValueAnimator animWithInterpolator = 1896 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1897 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1898 1899 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1900 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1901 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1902 final float newVerticalWallpaperOffset = 0.5f; 1903 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1904 public void onAnimationUpdate(ValueAnimator animation) { 1905 final float b = (Float) animation.getAnimatedValue(); 1906 final float a = 1f - b; 1907 if (b == 0f) { 1908 // an optimization, but not required 1909 return; 1910 } 1911 fastInvalidate(); 1912 setHorizontalWallpaperOffset( 1913 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1914 setVerticalWallpaperOffset( 1915 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1916 for (int i = 0; i < screenCount; i++) { 1917 final CellLayout cl = (CellLayout) getChildAt(i); 1918 cl.fastInvalidate(); 1919 cl.setFastTranslationX( 1920 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1921 cl.setFastTranslationY( 1922 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1923 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1924 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1925 cl.setFastBackgroundAlpha( 1926 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1927 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1928 b * newBackgroundAlphaMultipliers[i]); 1929 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1930 } 1931 } 1932 }); 1933 1934 ValueAnimator rotationAnim = 1935 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1936 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1937 rotationAnim.addUpdateListener(new AnimatorUpdateListener() { 1938 public void onAnimationUpdate(ValueAnimator animation) { 1939 // don't invalidate workspace because we did it above 1940 final float b = (Float) animation.getAnimatedValue(); 1941 final float a = 1f - b; 1942 if (b == 0f) { 1943 // an optimization, but not required 1944 return; 1945 } 1946 for (int i = 0; i < screenCount; i++) { 1947 final CellLayout cl = (CellLayout) getChildAt(i); 1948 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1949 } 1950 } 1951 }); 1952 1953 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1954 // If we call this when we're not animated, onAnimationEnd is never called on 1955 // the listener; make sure we only use the listener when we're actually animating 1956 mAnimator.addListener(mUnshrinkAnimationListener); 1957 mAnimator.start(); 1958 } else { 1959 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1960 setVerticalWallpaperOffset(0.5f); 1961 updateWallpaperOffsetImmediately(); 1962 } 1963 } 1964 1965 if (!springLoaded) { 1966 hideBackgroundGradient(); 1967 } 1968 } 1969 1970 /** 1971 * Draw the View v into the given Canvas. 1972 * 1973 * @param v the view to draw 1974 * @param destCanvas the canvas to draw on 1975 * @param padding the horizontal and vertical padding to use when drawing 1976 */ 1977 private void drawDragView(View v, Canvas destCanvas, int padding) { 1978 final Rect clipRect = mTempRect; 1979 v.getDrawingRect(clipRect); 1980 1981 // For a TextView, adjust the clip rect so that we don't include the text label 1982 if (v instanceof BubbleTextView) { 1983 final BubbleTextView tv = (BubbleTextView) v; 1984 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1985 tv.getLayout().getLineTop(0); 1986 } else if (v instanceof TextView) { 1987 final TextView tv = (TextView) v; 1988 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1989 tv.getLayout().getLineTop(0); 1990 } 1991 1992 // Draw the View into the bitmap. 1993 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1994 // they set scrollX and scrollY to large values to achieve centered text 1995 1996 destCanvas.save(); 1997 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1998 destCanvas.clipRect(clipRect, Op.REPLACE); 1999 v.draw(destCanvas); 2000 destCanvas.restore(); 2001 } 2002 2003 /** 2004 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2005 * Responsibility for the bitmap is transferred to the caller. 2006 */ 2007 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2008 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2009 final Bitmap b = Bitmap.createBitmap( 2010 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2011 2012 canvas.setBitmap(b); 2013 drawDragView(v, canvas, padding); 2014 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2015 return b; 2016 } 2017 2018 /** 2019 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2020 * Responsibility for the bitmap is transferred to the caller. 2021 */ 2022 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2023 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2024 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2025 canvas.setBitmap(b); 2026 2027 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2028 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2029 (h - padding) / (float) orig.getHeight()); 2030 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2031 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2032 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2033 2034 // center the image 2035 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2036 2037 Paint p = new Paint(); 2038 p.setFilterBitmap(true); 2039 canvas.drawBitmap(orig, src, dst, p); 2040 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2041 2042 return b; 2043 } 2044 2045 /** 2046 * Creates a drag outline to represent a drop (that we don't have the actual information for 2047 * yet). May be changed in the future to alter the drop outline slightly depending on the 2048 * clip description mime data. 2049 */ 2050 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2051 Resources r = getResources(); 2052 final int outlineColor = r.getColor(R.color.drag_outline_color); 2053 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2054 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2055 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2056 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2057 final Bitmap b = Bitmap.createBitmap( 2058 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2059 2060 canvas.setBitmap(b); 2061 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2062 rectRadius, rectRadius, mExternalDragOutlinePaint); 2063 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2064 return b; 2065 } 2066 2067 /** 2068 * Returns a new bitmap to show when the given View is being dragged around. 2069 * Responsibility for the bitmap is transferred to the caller. 2070 */ 2071 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2072 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2073 final Bitmap b = Bitmap.createBitmap( 2074 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2075 2076 canvas.setBitmap(b); 2077 canvas.drawBitmap(mDragOutline, 0, 0, null); 2078 drawDragView(v, canvas, padding); 2079 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2080 2081 return b; 2082 } 2083 2084 void startDrag(CellLayout.CellInfo cellInfo) { 2085 View child = cellInfo.cell; 2086 2087 // Make sure the drag was started by a long press as opposed to a long click. 2088 if (!child.isInTouchMode()) { 2089 return; 2090 } 2091 2092 mDragInfo = cellInfo; 2093 2094 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2095 current.onDragChild(child); 2096 2097 child.clearFocus(); 2098 child.setPressed(false); 2099 2100 final Canvas canvas = new Canvas(); 2101 2102 // We need to add extra padding to the bitmap to make room for the glow effect 2103 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2104 2105 // The outline is used to visualize where the item will land if dropped 2106 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2107 2108 // The drag bitmap follows the touch point around on the screen 2109 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2110 2111 final int bmpWidth = b.getWidth(); 2112 final int bmpHeight = b.getHeight(); 2113 child.getLocationOnScreen(mTempXY); 2114 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2115 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2116 mLauncher.lockScreenOrientation(); 2117 mDragController.startDrag( 2118 b, screenX, screenY, this, child.getTag(), DragController.DRAG_ACTION_MOVE); 2119 b.recycle(); 2120 } 2121 2122 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2123 boolean insertAtFirst, int intersectX, int intersectY) { 2124 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2125 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2126 2127 final int[] cellXY = new int[2]; 2128 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2129 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2130 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2131 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2132 cellXY[0], cellXY[1]); 2133 } 2134 2135 private void setPositionForDropAnimation( 2136 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2137 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2138 2139 // Based on the position of the drag view, find the top left of the original view 2140 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 2141 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 2142 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 2143 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 2144 2145 // Set its old pos (in the new parent's coordinates); it will be animated 2146 // in animateViewIntoPosition after the next layout pass 2147 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2148 lp.oldY = viewY - (parent.getTop() - mScrollY); 2149 } 2150 2151 /* 2152 * We should be careful that this method cannot result in any synchronous requestLayout() 2153 * calls, as it is called from onLayout(). 2154 */ 2155 public void animateViewIntoPosition(final View view) { 2156 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2157 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2158 2159 // Convert the animation params to be relative to the Workspace, not the CellLayout 2160 final int fromX = lp.oldX + parent.getLeft(); 2161 final int fromY = lp.oldY + parent.getTop(); 2162 2163 final int dx = lp.x - lp.oldX; 2164 final int dy = lp.y - lp.oldY; 2165 2166 // Calculate the duration of the animation based on the object's distance 2167 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2168 final Resources res = getResources(); 2169 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2170 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2171 if (dist < maxDist) { 2172 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2173 } 2174 2175 if (mDropAnim != null) { 2176 mDropAnim.end(); 2177 } 2178 mDropAnim = new ValueAnimator(); 2179 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2180 2181 // The view is invisible during the animation; we render it manually. 2182 mDropAnim.addListener(new AnimatorListenerAdapter() { 2183 public void onAnimationStart(Animator animation) { 2184 // Set this here so that we don't render it until the animation begins 2185 mDropView = view; 2186 } 2187 2188 public void onAnimationEnd(Animator animation) { 2189 if (mDropView != null) { 2190 mDropView.setVisibility(View.VISIBLE); 2191 mDropView = null; 2192 } 2193 } 2194 }); 2195 2196 mDropAnim.setDuration(duration); 2197 mDropAnim.setFloatValues(0.0f, 1.0f); 2198 mDropAnim.removeAllUpdateListeners(); 2199 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2200 public void onAnimationUpdate(ValueAnimator animation) { 2201 final float percent = (Float) animation.getAnimatedValue(); 2202 // Invalidate the old position 2203 invalidate(mDropViewPos[0], mDropViewPos[1], 2204 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2205 2206 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2207 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2208 invalidate(mDropViewPos[0], mDropViewPos[1], 2209 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2210 } 2211 }); 2212 2213 mDropAnim.start(); 2214 } 2215 2216 /** 2217 * {@inheritDoc} 2218 */ 2219 public boolean acceptDrop(DragSource source, int x, int y, 2220 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2221 2222 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2223 if (source != this) { 2224 // Don't accept the drop if we're not over a screen at time of drop 2225 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2226 return false; 2227 } 2228 2229 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2230 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2231 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2232 2233 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2234 2235 // Don't accept the drop if there's no room for the item 2236 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2237 mLauncher.showOutOfSpaceMessage(); 2238 return false; 2239 } 2240 } 2241 return true; 2242 } 2243 2244 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2245 DragView dragView, Object dragInfo) { 2246 boolean largeOrSpringLoaded = !mIsSmall || mWasSpringLoadedOnDragExit; 2247 int originX = largeOrSpringLoaded ? x - xOffset : x - xOffset + dragView.getWidth() / 2; 2248 int originY = largeOrSpringLoaded ? y - yOffset : y - yOffset + dragView.getHeight() / 2; 2249 2250 if (mIsSmall || mIsInUnshrinkAnimation) { 2251 // get originX and originY in the local coordinate system of the screen 2252 mTempOriginXY[0] = originX; 2253 mTempOriginXY[1] = originY; 2254 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 2255 originX = (int)mTempOriginXY[0]; 2256 originY = (int)mTempOriginXY[1]; 2257 if (!largeOrSpringLoaded) { 2258 originX -= mDragTargetLayout.getCellWidth() / 2; 2259 originY -= mDragTargetLayout.getCellHeight() / 2; 2260 } 2261 } 2262 2263 // When you are in customization mode and drag to a particular screen, make that the 2264 // new current/default screen, so any subsequent taps add items to that screen 2265 if (!mLauncher.isAllAppsVisible()) { 2266 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2267 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2268 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2269 } 2270 } 2271 2272 if (source != this) { 2273 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2274 // When the workspace is shrunk and the drop comes from customize, don't actually 2275 // add the item to the screen -- customize will do this itself 2276 return; 2277 } 2278 onDropExternal(new int[] { originX, originY }, dragInfo, mDragTargetLayout, false); 2279 } else if (mDragInfo != null) { 2280 final View cell = mDragInfo.cell; 2281 CellLayout dropTargetLayout = mDragTargetLayout; 2282 2283 // Handle the case where the user drops when in the scroll area. 2284 // This is treated as a drop on the adjacent page. 2285 if (dropTargetLayout == null && mInScrollArea) { 2286 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2287 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2288 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2289 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2290 } 2291 } 2292 2293 if (dropTargetLayout != null) { 2294 // Move internally 2295 mTargetCell = findNearestVacantArea(originX, originY, 2296 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 2297 mTargetCell); 2298 2299 final int screen = (mTargetCell == null) ? 2300 mDragInfo.screen : indexOfChild(dropTargetLayout); 2301 2302 if (screen != mCurrentPage) { 2303 snapToPage(screen); 2304 } 2305 2306 if (mTargetCell != null) { 2307 if (screen != mDragInfo.screen) { 2308 // Reparent the view 2309 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2310 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2311 mDragInfo.spanX, mDragInfo.spanY); 2312 } 2313 2314 // update the item's position after drop 2315 final ItemInfo info = (ItemInfo) cell.getTag(); 2316 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2317 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2318 lp.cellX = mTargetCell[0]; 2319 lp.cellY = mTargetCell[1]; 2320 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2321 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2322 2323 if (cell instanceof LauncherAppWidgetHostView) { 2324 final CellLayoutChildren children = dropTargetLayout.getChildrenLayout(); 2325 final CellLayout cellLayout = dropTargetLayout; 2326 // We post this call so that the widget has a chance to be placed 2327 // in its final location 2328 2329 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2330 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2331 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2332 post(new Runnable() { 2333 public void run() { 2334 children.addResizeFrame(info, hostView, 2335 cellLayout); 2336 } 2337 }); 2338 } 2339 } 2340 2341 LauncherModel.moveItemInDatabase(mLauncher, info, 2342 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2343 lp.cellX, lp.cellY); 2344 } 2345 } 2346 2347 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2348 2349 // Prepare it to be animated into its new position 2350 // This must be called after the view has been re-parented 2351 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 2352 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2353 parent.onDropChild(cell, animateDrop); 2354 } 2355 } 2356 2357 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2358 int yOffset, DragView dragView, Object dragInfo) { 2359 mDragTargetLayout = null; // Reset the drag state 2360 2361 if (!mIsSmall) { 2362 mDragTargetLayout = getCurrentDropLayout(); 2363 mDragTargetLayout.onDragEnter(); 2364 showOutlines(); 2365 } 2366 } 2367 2368 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2369 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2370 2371 if (mIsSmall || mIsInUnshrinkAnimation) { 2372 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2373 return null; 2374 } 2375 // We may need to delegate the drag to a child view. If a 1x1 item 2376 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2377 // then drag events should be handled by that child. 2378 2379 ItemInfo item = (ItemInfo) dragInfo; 2380 CellLayout currentLayout = getCurrentDropLayout(); 2381 2382 int dragPointX, dragPointY; 2383 if (item.spanX == 1 && item.spanY == 1) { 2384 // For a 1x1, calculate the drop cell exactly as in onDragOver 2385 dragPointX = x - xOffset; 2386 dragPointY = y - yOffset; 2387 } else { 2388 // Otherwise, use the exact drag coordinates 2389 dragPointX = x; 2390 dragPointY = y; 2391 } 2392 dragPointX += mScrollX - currentLayout.getLeft(); 2393 dragPointY += mScrollY - currentLayout.getTop(); 2394 2395 // If we are dragging over a cell that contains a DropTarget that will 2396 // accept the drop, delegate to that DropTarget. 2397 final int[] cellXY = mTempCell; 2398 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2399 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2400 if (child instanceof DropTarget) { 2401 DropTarget target = (DropTarget)child; 2402 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2403 return target; 2404 } 2405 } 2406 return null; 2407 } 2408 2409 /** 2410 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2411 * in the returned structure related to the widgets that match the drop (or a null list if it is 2412 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2413 */ 2414 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2415 final LauncherModel model = mLauncher.getModel(); 2416 final ClipDescription desc = event.getClipDescription(); 2417 final int mimeTypeCount = desc.getMimeTypeCount(); 2418 for (int i = 0; i < mimeTypeCount; ++i) { 2419 final String mimeType = desc.getMimeType(i); 2420 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2421 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2422 } else { 2423 final List<WidgetMimeTypeHandlerData> widgets = 2424 model.resolveWidgetsForMimeType(mContext, mimeType); 2425 if (widgets.size() > 0) { 2426 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2427 } 2428 } 2429 } 2430 return null; 2431 } 2432 2433 /** 2434 * Global drag and drop handler 2435 */ 2436 @Override 2437 public boolean onDragEvent(DragEvent event) { 2438 final ClipDescription desc = event.getClipDescription(); 2439 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2440 final int[] pos = new int[2]; 2441 layout.getLocationOnScreen(pos); 2442 // We need to offset the drag coordinates to layout coordinate space 2443 final int x = (int) event.getX() - pos[0]; 2444 final int y = (int) event.getY() - pos[1]; 2445 2446 switch (event.getAction()) { 2447 case DragEvent.ACTION_DRAG_STARTED: { 2448 // Validate this drag 2449 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2450 if (test != null) { 2451 boolean isShortcut = (test.second == null); 2452 if (isShortcut) { 2453 // Check if we have enough space on this screen to add a new shortcut 2454 if (!layout.findCellForSpan(pos, 1, 1)) { 2455 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2456 Toast.LENGTH_SHORT).show(); 2457 return false; 2458 } 2459 } 2460 } else { 2461 // Show error message if we couldn't accept any of the items 2462 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2463 Toast.LENGTH_SHORT).show(); 2464 return false; 2465 } 2466 2467 // Create the drag outline 2468 // We need to add extra padding to the bitmap to make room for the glow effect 2469 final Canvas canvas = new Canvas(); 2470 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2471 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2472 2473 // Show the current page outlines to indicate that we can accept this drop 2474 showOutlines(); 2475 layout.setIsDragOccuring(true); 2476 layout.onDragEnter(); 2477 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2478 2479 return true; 2480 } 2481 case DragEvent.ACTION_DRAG_LOCATION: 2482 // Visualize the drop location 2483 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2484 return true; 2485 case DragEvent.ACTION_DROP: { 2486 // Try and add any shortcuts 2487 final LauncherModel model = mLauncher.getModel(); 2488 final ClipData data = event.getClipData(); 2489 2490 // We assume that the mime types are ordered in descending importance of 2491 // representation. So we enumerate the list of mime types and alert the 2492 // user if any widgets can handle the drop. Only the most preferred 2493 // representation will be handled. 2494 pos[0] = x; 2495 pos[1] = y; 2496 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2497 if (test != null) { 2498 final int index = test.first; 2499 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2500 final boolean isShortcut = (widgets == null); 2501 final String mimeType = desc.getMimeType(index); 2502 if (isShortcut) { 2503 final Intent intent = data.getItemAt(index).getIntent(); 2504 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2505 onDropExternal(new int[] { x, y }, info, layout, false); 2506 } else { 2507 if (widgets.size() == 1) { 2508 // If there is only one item, then go ahead and add and configure 2509 // that widget 2510 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2511 final PendingAddWidgetInfo createInfo = 2512 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2513 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2514 } else { 2515 // Show the widget picker dialog if there is more than one widget 2516 // that can handle this data type 2517 final InstallWidgetReceiver.WidgetListAdapter adapter = 2518 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2519 data, widgets, layout, mCurrentPage, pos); 2520 final AlertDialog.Builder builder = 2521 new AlertDialog.Builder(mContext); 2522 builder.setAdapter(adapter, adapter); 2523 builder.setCancelable(true); 2524 builder.setTitle(mContext.getString( 2525 R.string.external_drop_widget_pick_title)); 2526 builder.setIcon(R.drawable.ic_no_applications); 2527 builder.show(); 2528 } 2529 } 2530 } 2531 return true; 2532 } 2533 case DragEvent.ACTION_DRAG_ENDED: 2534 // Hide the page outlines after the drop 2535 layout.setIsDragOccuring(false); 2536 layout.onDragExit(); 2537 hideOutlines(); 2538 return true; 2539 } 2540 return super.onDragEvent(event); 2541 } 2542 2543 /* 2544 * 2545 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2546 * coordinate space. The argument xy is modified with the return result. 2547 * 2548 */ 2549 void mapPointFromSelfToChild(View v, float[] xy) { 2550 mapPointFromSelfToChild(v, xy, null); 2551 } 2552 2553 /* 2554 * 2555 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2556 * coordinate space. The argument xy is modified with the return result. 2557 * 2558 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2559 * computing it itself; we use this to avoid redundant matrix inversions in 2560 * findMatchingPageForDragOver 2561 * 2562 */ 2563 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2564 if (cachedInverseMatrix == null) { 2565 v.getMatrix().invert(mTempInverseMatrix); 2566 cachedInverseMatrix = mTempInverseMatrix; 2567 } 2568 xy[0] = xy[0] + mScrollX - v.getLeft(); 2569 xy[1] = xy[1] + mScrollY - v.getTop(); 2570 cachedInverseMatrix.mapPoints(xy); 2571 } 2572 2573 /* 2574 * 2575 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2576 * the parent View's coordinate space. The argument xy is modified with the return result. 2577 * 2578 */ 2579 void mapPointFromChildToSelf(View v, float[] xy) { 2580 v.getMatrix().mapPoints(xy); 2581 xy[0] -= (mScrollX - v.getLeft()); 2582 xy[1] -= (mScrollY - v.getTop()); 2583 } 2584 2585 static private float squaredDistance(float[] point1, float[] point2) { 2586 float distanceX = point1[0] - point2[0]; 2587 float distanceY = point2[1] - point2[1]; 2588 return distanceX * distanceX + distanceY * distanceY; 2589 } 2590 2591 /* 2592 * 2593 * Returns true if the passed CellLayout cl overlaps with dragView 2594 * 2595 */ 2596 boolean overlaps(CellLayout cl, DragView dragView, 2597 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2598 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2599 final float[] draggedItemTopLeft = mTempDragCoordinates; 2600 draggedItemTopLeft[0] = dragViewX; 2601 draggedItemTopLeft[1] = dragViewY; 2602 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2603 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2604 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2605 2606 // Transform the dragged item's top left coordinates 2607 // to the CellLayout's local coordinates 2608 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2609 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2610 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2611 2612 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2613 // Transform the dragged item's bottom right coordinates 2614 // to the CellLayout's local coordinates 2615 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2616 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2617 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2618 2619 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2620 float overlap = (overlapRegionRight - overlapRegionLeft) * 2621 (overlapRegionBottom - overlapRegionTop); 2622 if (overlap > 0) { 2623 return true; 2624 } 2625 } 2626 } 2627 return false; 2628 } 2629 2630 /* 2631 * 2632 * This method returns the CellLayout that is currently being dragged to. In order to drag 2633 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2634 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2635 * 2636 * Return null if no CellLayout is currently being dragged over 2637 * 2638 */ 2639 private CellLayout findMatchingPageForDragOver( 2640 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2641 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2642 // with the item being dragged and then choose the one that's closest to the touch point 2643 final int screenCount = getChildCount(); 2644 CellLayout bestMatchingScreen = null; 2645 float smallestDistSoFar = Float.MAX_VALUE; 2646 2647 for (int i = 0; i < screenCount; i++) { 2648 CellLayout cl = (CellLayout)getChildAt(i); 2649 2650 final float[] touchXy = mTempTouchCoordinates; 2651 touchXy[0] = originX + offsetX; 2652 touchXy[1] = originY + offsetY; 2653 2654 // Transform the touch coordinates to the CellLayout's local coordinates 2655 // If the touch point is within the bounds of the cell layout, we can return immediately 2656 cl.getMatrix().invert(mTempInverseMatrix); 2657 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2658 2659 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2660 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2661 return cl; 2662 } 2663 2664 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2665 // Get the center of the cell layout in screen coordinates 2666 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2667 cellLayoutCenter[0] = cl.getWidth()/2; 2668 cellLayoutCenter[1] = cl.getHeight()/2; 2669 mapPointFromChildToSelf(cl, cellLayoutCenter); 2670 2671 touchXy[0] = originX + offsetX; 2672 touchXy[1] = originY + offsetY; 2673 2674 // Calculate the distance between the center of the CellLayout 2675 // and the touch point 2676 float dist = squaredDistance(touchXy, cellLayoutCenter); 2677 2678 if (dist < smallestDistSoFar) { 2679 smallestDistSoFar = dist; 2680 bestMatchingScreen = cl; 2681 } 2682 } 2683 } 2684 return bestMatchingScreen; 2685 } 2686 2687 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2688 DragView dragView, Object dragInfo) { 2689 // When touch is inside the scroll area, skip dragOver actions for the current screen 2690 if (!mInScrollArea) { 2691 CellLayout layout; 2692 int originX = x - xOffset; 2693 int originY = y - yOffset; 2694 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2695 if (shrunken) { 2696 mLastDragView = dragView; 2697 mLastDragOriginX = originX; 2698 mLastDragOriginY = originY; 2699 mLastDragXOffset = xOffset; 2700 mLastDragYOffset = yOffset; 2701 layout = findMatchingPageForDragOver(dragView, originX, originY, xOffset, yOffset); 2702 2703 if (layout != mDragTargetLayout) { 2704 if (mDragTargetLayout != null) { 2705 mDragTargetLayout.setIsDragOverlapping(false); 2706 mSpringLoadedDragController.onDragExit(); 2707 } 2708 mDragTargetLayout = layout; 2709 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2710 mDragTargetLayout.setIsDragOverlapping(true); 2711 mSpringLoadedDragController.onDragEnter( 2712 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2713 } 2714 } 2715 } else { 2716 layout = getCurrentDropLayout(); 2717 if (layout != mDragTargetLayout) { 2718 if (mDragTargetLayout != null) { 2719 mDragTargetLayout.onDragExit(); 2720 } 2721 layout.onDragEnter(); 2722 mDragTargetLayout = layout; 2723 } 2724 } 2725 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2726 layout = getCurrentDropLayout(); 2727 2728 final ItemInfo item = (ItemInfo)dragInfo; 2729 if (dragInfo instanceof LauncherAppWidgetInfo) { 2730 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2731 2732 if (widgetInfo.spanX == -1) { 2733 // Calculate the grid spans needed to fit this widget 2734 int[] spans = layout.rectToCell( 2735 widgetInfo.minWidth, widgetInfo.minHeight, null); 2736 item.spanX = spans[0]; 2737 item.spanY = spans[1]; 2738 } 2739 } 2740 2741 if (source instanceof AllAppsPagedView) { 2742 // This is a hack to fix the point used to determine which cell an icon from 2743 // the all apps screen is over 2744 if (item != null && item.spanX == 1 && layout != null) { 2745 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2746 2747 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2748 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2749 dragView.setDragRegion(dragView.getDragRegionLeft(), 2750 dragView.getDragRegionTop(), 2751 layout.getCellWidth(), 2752 dragView.getDragRegionHeight()); 2753 } 2754 } 2755 } else if (source == this) { 2756 // When dragging from the workspace, the drag view is slightly bigger than 2757 // the original view, and offset vertically. Adjust to account for this. 2758 final View origView = mDragInfo.cell; 2759 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2760 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2761 + dragView.getOffsetY(); 2762 } 2763 2764 if (mDragTargetLayout != null) { 2765 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2766 float[] localOrigin = { originX, originY }; 2767 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2768 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2769 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2770 } 2771 } 2772 } 2773 } 2774 2775 private void doDragExit() { 2776 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2777 if (mDragTargetLayout != null) { 2778 mDragTargetLayout.onDragExit(); 2779 } 2780 if (!mIsPageMoving) { 2781 hideOutlines(); 2782 } 2783 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2784 mLauncher.exitSpringLoadedDragMode(); 2785 } 2786 clearAllHovers(); 2787 } 2788 2789 public void onDragExit(DragSource source, int x, int y, int xOffset, 2790 int yOffset, DragView dragView, Object dragInfo) { 2791 doDragExit(); 2792 } 2793 2794 @Override 2795 public void getHitRect(Rect outRect) { 2796 // We want the workspace to have the whole area of the display (it will find the correct 2797 // cell layout to drop to in the existing drag/drop logic. 2798 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2799 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2800 } 2801 2802 /** 2803 * Add the item specified by dragInfo to the given layout. 2804 * @return true if successful 2805 */ 2806 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2807 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2808 onDropExternal(null, (ItemInfo) dragInfo, (CellLayout) layout, false); 2809 return true; 2810 } 2811 mLauncher.showOutOfSpaceMessage(); 2812 return false; 2813 } 2814 2815 /** 2816 * Drop an item that didn't originate on one of the workspace screens. 2817 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2818 * come from another app altogether. 2819 * 2820 * NOTE: This can also be called when we are outside of a drag event, when we want 2821 * to add an item to one of the workspace screens. 2822 */ 2823 private void onDropExternal(int[] touchXY, Object dragInfo, 2824 CellLayout cellLayout, boolean insertAtFirst) { 2825 int screen = indexOfChild(cellLayout); 2826 if (dragInfo instanceof PendingAddItemInfo) { 2827 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2828 // When dragging and dropping from customization tray, we deal with creating 2829 // widgets/shortcuts/folders in a slightly different way 2830 switch (info.itemType) { 2831 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2832 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2833 break; 2834 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2835 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2836 break; 2837 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2838 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2839 break; 2840 default: 2841 throw new IllegalStateException("Unknown item type: " + info.itemType); 2842 } 2843 cellLayout.onDragExit(); 2844 } else { 2845 // This is for other drag/drop cases, like dragging from All Apps 2846 ItemInfo info = (ItemInfo) dragInfo; 2847 View view = null; 2848 2849 switch (info.itemType) { 2850 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2851 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2852 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2853 // Came from all apps -- make a copy 2854 info = new ShortcutInfo((ApplicationInfo) info); 2855 } 2856 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2857 (ShortcutInfo) info); 2858 break; 2859 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2860 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2861 cellLayout, (UserFolderInfo) info, mIconCache); 2862 break; 2863 default: 2864 throw new IllegalStateException("Unknown item type: " + info.itemType); 2865 } 2866 2867 mTargetCell = new int[2]; 2868 if (touchXY != null) { 2869 // when dragging and dropping, just find the closest free spot 2870 cellLayout.findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, mTargetCell); 2871 } else { 2872 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2873 } 2874 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2875 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2876 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2877 cellLayout.onDropChild(view, animateDrop); 2878 cellLayout.animateDrop(); 2879 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2880 2881 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2882 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2883 lp.cellX, lp.cellY); 2884 } 2885 } 2886 2887 /** 2888 * Return the current {@link CellLayout}, correctly picking the destination 2889 * screen while a scroll is in progress. 2890 */ 2891 public CellLayout getCurrentDropLayout() { 2892 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2893 } 2894 2895 /** 2896 * Return the current CellInfo describing our current drag; this method exists 2897 * so that Launcher can sync this object with the correct info when the activity is created/ 2898 * destroyed 2899 * 2900 */ 2901 public CellLayout.CellInfo getDragInfo() { 2902 return mDragInfo; 2903 } 2904 2905 /** 2906 * Calculate the nearest cell where the given object would be dropped. 2907 */ 2908 private int[] findNearestVacantArea(int pixelX, int pixelY, 2909 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2910 2911 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2912 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2913 2914 // Find the best target drop location 2915 return layout.findNearestVacantArea( 2916 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2917 } 2918 2919 void setLauncher(Launcher launcher) { 2920 mLauncher = launcher; 2921 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2922 2923 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2924 if (mCustomizationDrawer != null) { 2925 mCustomizationDrawerContent = 2926 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2927 } 2928 } 2929 2930 public void setDragController(DragController dragController) { 2931 mDragController = dragController; 2932 } 2933 2934 /** 2935 * Called at the end of a drag which originated on the workspace. 2936 */ 2937 public void onDropCompleted(View target, Object dragInfo, boolean success) { 2938 if (success) { 2939 if (target != this && mDragInfo != null) { 2940 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2941 cellLayout.removeView(mDragInfo.cell); 2942 if (mDragInfo.cell instanceof DropTarget) { 2943 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2944 } 2945 // final Object tag = mDragInfo.cell.getTag(); 2946 } 2947 } else if (mDragInfo != null) { 2948 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2949 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2950 // moved into DragController.cancelDrag(). 2951 doDragExit(); 2952 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 2953 } 2954 mLauncher.unlockScreenOrientation(); 2955 mDragOutline = null; 2956 mDragInfo = null; 2957 } 2958 2959 @Override 2960 public void onDragViewVisible() { 2961 ((View) mDragInfo.cell).setVisibility(View.GONE); 2962 } 2963 2964 public boolean isDropEnabled() { 2965 return true; 2966 } 2967 2968 @Override 2969 protected void onRestoreInstanceState(Parcelable state) { 2970 super.onRestoreInstanceState(state); 2971 Launcher.setScreen(mCurrentPage); 2972 } 2973 2974 @Override 2975 public void scrollLeft() { 2976 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2977 super.scrollLeft(); 2978 } 2979 } 2980 2981 @Override 2982 public void scrollRight() { 2983 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2984 super.scrollRight(); 2985 } 2986 } 2987 2988 @Override 2989 public void onEnterScrollArea(int direction) { 2990 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2991 mInScrollArea = true; 2992 mPendingScrollDirection = direction; 2993 2994 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2995 final CellLayout layout = (CellLayout) getChildAt(page); 2996 2997 if (layout != null) { 2998 layout.setIsDragOverlapping(true); 2999 3000 if (mDragTargetLayout != null) { 3001 mDragTargetLayout.onDragExit(); 3002 mDragTargetLayout = null; 3003 } 3004 // In portrait, need to redraw the edge glow when entering the scroll area 3005 if (getHeight() > getWidth()) { 3006 invalidate(); 3007 } 3008 } 3009 } 3010 } 3011 3012 private void clearAllHovers() { 3013 final int childCount = getChildCount(); 3014 for (int i = 0; i < childCount; i++) { 3015 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3016 } 3017 mSpringLoadedDragController.onDragExit(); 3018 3019 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3020 // so we need to redraw the workspace when this may have changed. 3021 if (getHeight() > getWidth()) { 3022 invalidate(); 3023 } 3024 } 3025 3026 @Override 3027 public void onExitScrollArea() { 3028 if (mInScrollArea) { 3029 mInScrollArea = false; 3030 mPendingScrollDirection = DragController.SCROLL_NONE; 3031 clearAllHovers(); 3032 } 3033 } 3034 3035 public Folder getFolderForTag(Object tag) { 3036 final int screenCount = getChildCount(); 3037 for (int screen = 0; screen < screenCount; screen++) { 3038 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3039 int count = currentScreen.getChildCount(); 3040 for (int i = 0; i < count; i++) { 3041 View child = currentScreen.getChildAt(i); 3042 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3043 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3044 Folder f = (Folder) child; 3045 if (f.getInfo() == tag && f.getInfo().opened) { 3046 return f; 3047 } 3048 } 3049 } 3050 } 3051 return null; 3052 } 3053 3054 public View getViewForTag(Object tag) { 3055 int screenCount = getChildCount(); 3056 for (int screen = 0; screen < screenCount; screen++) { 3057 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3058 int count = currentScreen.getChildCount(); 3059 for (int i = 0; i < count; i++) { 3060 View child = currentScreen.getChildAt(i); 3061 if (child.getTag() == tag) { 3062 return child; 3063 } 3064 } 3065 } 3066 return null; 3067 } 3068 3069 3070 void removeItems(final ArrayList<ApplicationInfo> apps) { 3071 final int screenCount = getChildCount(); 3072 final PackageManager manager = getContext().getPackageManager(); 3073 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3074 3075 final HashSet<String> packageNames = new HashSet<String>(); 3076 final int appCount = apps.size(); 3077 for (int i = 0; i < appCount; i++) { 3078 packageNames.add(apps.get(i).componentName.getPackageName()); 3079 } 3080 3081 for (int i = 0; i < screenCount; i++) { 3082 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3083 final ViewGroup layout = layoutParent.getChildrenLayout(); 3084 3085 // Avoid ANRs by treating each screen separately 3086 post(new Runnable() { 3087 public void run() { 3088 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3089 childrenToRemove.clear(); 3090 3091 int childCount = layout.getChildCount(); 3092 for (int j = 0; j < childCount; j++) { 3093 final View view = layout.getChildAt(j); 3094 Object tag = view.getTag(); 3095 3096 if (tag instanceof ShortcutInfo) { 3097 final ShortcutInfo info = (ShortcutInfo) tag; 3098 final Intent intent = info.intent; 3099 final ComponentName name = intent.getComponent(); 3100 3101 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3102 for (String packageName: packageNames) { 3103 if (packageName.equals(name.getPackageName())) { 3104 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3105 childrenToRemove.add(view); 3106 } 3107 } 3108 } 3109 } else if (tag instanceof UserFolderInfo) { 3110 final UserFolderInfo info = (UserFolderInfo) tag; 3111 final ArrayList<ShortcutInfo> contents = info.contents; 3112 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3113 final int contentsCount = contents.size(); 3114 boolean removedFromFolder = false; 3115 3116 for (int k = 0; k < contentsCount; k++) { 3117 final ShortcutInfo appInfo = contents.get(k); 3118 final Intent intent = appInfo.intent; 3119 final ComponentName name = intent.getComponent(); 3120 3121 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3122 for (String packageName: packageNames) { 3123 if (packageName.equals(name.getPackageName())) { 3124 toRemove.add(appInfo); 3125 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3126 removedFromFolder = true; 3127 } 3128 } 3129 } 3130 } 3131 3132 contents.removeAll(toRemove); 3133 if (removedFromFolder) { 3134 final Folder folder = getOpenFolder(); 3135 if (folder != null) 3136 folder.notifyDataSetChanged(); 3137 } 3138 } else if (tag instanceof LiveFolderInfo) { 3139 final LiveFolderInfo info = (LiveFolderInfo) tag; 3140 final Uri uri = info.uri; 3141 final ProviderInfo providerInfo = manager.resolveContentProvider( 3142 uri.getAuthority(), 0); 3143 3144 if (providerInfo != null) { 3145 for (String packageName: packageNames) { 3146 if (packageName.equals(providerInfo.packageName)) { 3147 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3148 childrenToRemove.add(view); 3149 } 3150 } 3151 } 3152 } else if (tag instanceof LauncherAppWidgetInfo) { 3153 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3154 final AppWidgetProviderInfo provider = 3155 widgets.getAppWidgetInfo(info.appWidgetId); 3156 if (provider != null) { 3157 for (String packageName: packageNames) { 3158 if (packageName.equals(provider.provider.getPackageName())) { 3159 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3160 childrenToRemove.add(view); 3161 } 3162 } 3163 } 3164 } 3165 } 3166 3167 childCount = childrenToRemove.size(); 3168 for (int j = 0; j < childCount; j++) { 3169 View child = childrenToRemove.get(j); 3170 // Note: We can not remove the view directly from CellLayoutChildren as this 3171 // does not re-mark the spaces as unoccupied. 3172 layoutParent.removeViewInLayout(child); 3173 if (child instanceof DropTarget) { 3174 mDragController.removeDropTarget((DropTarget)child); 3175 } 3176 } 3177 3178 if (childCount > 0) { 3179 layout.requestLayout(); 3180 layout.invalidate(); 3181 } 3182 } 3183 }); 3184 } 3185 } 3186 3187 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3188 final int screenCount = getChildCount(); 3189 for (int i = 0; i < screenCount; i++) { 3190 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3191 int childCount = layout.getChildCount(); 3192 for (int j = 0; j < childCount; j++) { 3193 final View view = layout.getChildAt(j); 3194 Object tag = view.getTag(); 3195 if (tag instanceof ShortcutInfo) { 3196 ShortcutInfo info = (ShortcutInfo)tag; 3197 // We need to check for ACTION_MAIN otherwise getComponent() might 3198 // return null for some shortcuts (for instance, for shortcuts to 3199 // web pages.) 3200 final Intent intent = info.intent; 3201 final ComponentName name = intent.getComponent(); 3202 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3203 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3204 final int appCount = apps.size(); 3205 for (int k = 0; k < appCount; k++) { 3206 ApplicationInfo app = apps.get(k); 3207 if (app.componentName.equals(name)) { 3208 info.setIcon(mIconCache.getIcon(info.intent)); 3209 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3210 new FastBitmapDrawable(info.getIcon(mIconCache)), 3211 null, null); 3212 } 3213 } 3214 } 3215 } 3216 } 3217 } 3218 } 3219 3220 void moveToDefaultScreen(boolean animate) { 3221 if (mIsSmall || mIsInUnshrinkAnimation) { 3222 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3223 } else if (animate) { 3224 snapToPage(mDefaultPage); 3225 } else { 3226 setCurrentPage(mDefaultPage); 3227 } 3228 getChildAt(mDefaultPage).requestFocus(); 3229 } 3230 3231 void setIndicators(Drawable previous, Drawable next) { 3232 mPreviousIndicator = previous; 3233 mNextIndicator = next; 3234 previous.setLevel(mCurrentPage); 3235 next.setLevel(mCurrentPage); 3236 } 3237 3238 @Override 3239 public void syncPages() { 3240 } 3241 3242 @Override 3243 public void syncPageItems(int page) { 3244 } 3245 3246} 3247