Workspace.java revision 25356e75ebae5d6e0be43f38d2c73b5cb59d05f2
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 boolean mDrawBackground = true; 118 private boolean mDrawCustomizeTrayBackground; 119 private float mBackgroundAlpha = 0; 120 private float mOverScrollMaxBackgroundAlpha = 0.0f; 121 private int mOverScrollPageIndex = -1; 122 123 private View mCustomizationDrawer; 124 private View mCustomizationDrawerContent; 125 private int[] mCustomizationDrawerPos = new int[2]; 126 private float[] mCustomizationDrawerTransformedPos = new float[2]; 127 128 private final WallpaperManager mWallpaperManager; 129 private IBinder mWindowToken; 130 131 private int mDefaultPage; 132 133 private boolean mIsDragInProcess = false; 134 135 /** 136 * CellInfo for the cell that is currently being dragged 137 */ 138 private CellLayout.CellInfo mDragInfo; 139 140 /** 141 * Target drop area calculated during last acceptDrop call. 142 */ 143 private int[] mTargetCell = null; 144 145 /** 146 * The CellLayout that is currently being dragged over 147 */ 148 private CellLayout mDragTargetLayout = null; 149 150 private Launcher mLauncher; 151 private IconCache mIconCache; 152 private DragController mDragController; 153 154 // These are temporary variables to prevent having to allocate a new object just to 155 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 156 private int[] mTempCell = new int[2]; 157 private int[] mTempEstimate = new int[2]; 158 private float[] mTempOriginXY = new float[2]; 159 private float[] mTempDragCoordinates = new float[2]; 160 private float[] mTempTouchCoordinates = new float[2]; 161 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 162 private float[] mTempDragBottomRightCoordinates = new float[2]; 163 private Matrix mTempInverseMatrix = new Matrix(); 164 165 private SpringLoadedDragController mSpringLoadedDragController; 166 167 private static final int DEFAULT_CELL_COUNT_X = 4; 168 private static final int DEFAULT_CELL_COUNT_Y = 4; 169 170 private Drawable mPreviousIndicator; 171 private Drawable mNextIndicator; 172 173 // State variable that indicates whether the pages are small (ie when you're 174 // in all apps or customize mode) 175 private boolean mIsSmall = false; 176 private boolean mIsInUnshrinkAnimation = false; 177 private AnimatorListener mShrinkAnimationListener; 178 private AnimatorListener mUnshrinkAnimationListener; 179 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 180 private ShrinkState mShrinkState; 181 private boolean mWasSpringLoadedOnDragExit = false; 182 private boolean mWaitingToShrink = false; 183 private ShrinkState mWaitingToShrinkState; 184 private AnimatorSet mAnimator; 185 186 /** Is the user is dragging an item near the edge of a page? */ 187 private boolean mInScrollArea = false; 188 189 /** If mInScrollArea is true, the direction of the scroll. */ 190 private int mPendingScrollDirection = DragController.SCROLL_NONE; 191 192 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 193 private Bitmap mDragOutline = null; 194 private final Rect mTempRect = new Rect(); 195 private final int[] mTempXY = new int[2]; 196 197 private ValueAnimator mDropAnim = null; 198 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 199 private View mDropView = null; 200 private int[] mDropViewPos = new int[] { -1, -1 }; 201 202 // Paint used to draw external drop outline 203 private final Paint mExternalDragOutlinePaint = new Paint(); 204 205 // Camera and Matrix used to determine the final position of a neighboring CellLayout 206 private final Matrix mMatrix = new Matrix(); 207 private final Camera mCamera = new Camera(); 208 private final float mTempFloat2[] = new float[2]; 209 210 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 211 int mWallpaperWidth; 212 int mWallpaperHeight; 213 WallpaperOffsetInterpolator mWallpaperOffset; 214 boolean mUpdateWallpaperOffsetImmediately = false; 215 boolean mSyncWallpaperOffsetWithScroll = true; 216 217 // info about the last drag 218 private DragView mLastDragView; 219 private int mLastDragOriginX; 220 private int mLastDragOriginY; 221 private int mLastDragXOffset; 222 private int mLastDragYOffset; 223 224 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 225 private float mXDown; 226 private float mYDown; 227 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 228 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 229 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 230 231 /** 232 * Used to inflate the Workspace from XML. 233 * 234 * @param context The application's context. 235 * @param attrs The attributes set containing the Workspace's customization values. 236 */ 237 public Workspace(Context context, AttributeSet attrs) { 238 this(context, attrs, 0); 239 } 240 241 /** 242 * Used to inflate the Workspace from XML. 243 * 244 * @param context The application's context. 245 * @param attrs The attributes set containing the Workspace's customization values. 246 * @param defStyle Unused. 247 */ 248 public Workspace(Context context, AttributeSet attrs, int defStyle) { 249 super(context, attrs, defStyle); 250 mContentIsRefreshable = false; 251 252 if (!LauncherApplication.isScreenXLarge()) { 253 mFadeInAdjacentScreens = false; 254 } 255 256 mWallpaperManager = WallpaperManager.getInstance(context); 257 258 TypedArray a = context.obtainStyledAttributes(attrs, 259 R.styleable.Workspace, defStyle, 0); 260 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 261 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 262 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 263 a.recycle(); 264 265 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 266 setHapticFeedbackEnabled(false); 267 268 initWorkspace(); 269 270 // Disable multitouch across the workspace/all apps/customize tray 271 setMotionEventSplittingEnabled(true); 272 } 273 274 /** 275 * Initializes various states for this workspace. 276 */ 277 protected void initWorkspace() { 278 Context context = getContext(); 279 mCurrentPage = mDefaultPage; 280 Launcher.setScreen(mCurrentPage); 281 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 282 mIconCache = app.getIconCache(); 283 mExternalDragOutlinePaint.setAntiAlias(true); 284 setWillNotDraw(false); 285 286 try { 287 final Resources res = getResources(); 288 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 289 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 290 } catch (Resources.NotFoundException e) { 291 // In this case, we will skip drawing background protection 292 } 293 294 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 295 @Override 296 public void onAnimationStart(Animator animation) { 297 mIsInUnshrinkAnimation = true; 298 } 299 300 @Override 301 public void onAnimationEnd(Animator animation) { 302 mIsInUnshrinkAnimation = false; 303 mSyncWallpaperOffsetWithScroll = true; 304 if (mShrinkState == ShrinkState.SPRING_LOADED) { 305 View layout = null; 306 if (mLastDragView != null) { 307 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 308 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 309 } 310 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 311 } else { 312 mDrawCustomizeTrayBackground = false; 313 } 314 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 315 mAnimator = null; 316 enableChildrenLayers(false); 317 } 318 }; 319 mShrinkAnimationListener = new AnimatorListenerAdapter() { 320 @Override 321 public void onAnimationStart(Animator animation) { 322 enableChildrenLayers(true); 323 } 324 @Override 325 public void onAnimationEnd(Animator animation) { 326 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 327 mAnimator = null; 328 } 329 }; 330 mSnapVelocity = 600; 331 mWallpaperOffset = new WallpaperOffsetInterpolator(); 332 } 333 334 @Override 335 protected int getScrollMode() { 336 if (LauncherApplication.isScreenXLarge()) { 337 return SmoothPagedView.X_LARGE_MODE; 338 } else { 339 return SmoothPagedView.DEFAULT_MODE; 340 } 341 } 342 343 @Override 344 public void addView(View child, int index, LayoutParams params) { 345 if (!(child instanceof CellLayout)) { 346 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 347 } 348 ((CellLayout) child).setOnInterceptTouchListener(this); 349 child.setOnClickListener(this); 350 child.setClickable(true); 351 super.addView(child, index, params); 352 } 353 354 @Override 355 public void addView(View child) { 356 if (!(child instanceof CellLayout)) { 357 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 358 } 359 ((CellLayout) child).setOnInterceptTouchListener(this); 360 child.setOnClickListener(this); 361 child.setClickable(true); 362 super.addView(child); 363 } 364 365 @Override 366 public void addView(View child, int index) { 367 if (!(child instanceof CellLayout)) { 368 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 369 } 370 ((CellLayout) child).setOnInterceptTouchListener(this); 371 child.setOnClickListener(this); 372 child.setClickable(true); 373 super.addView(child, index); 374 } 375 376 @Override 377 public void addView(View child, int width, int height) { 378 if (!(child instanceof CellLayout)) { 379 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 380 } 381 ((CellLayout) child).setOnInterceptTouchListener(this); 382 child.setOnClickListener(this); 383 child.setClickable(true); 384 super.addView(child, width, height); 385 } 386 387 @Override 388 public void addView(View child, LayoutParams params) { 389 if (!(child instanceof CellLayout)) { 390 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 391 } 392 ((CellLayout) child).setOnInterceptTouchListener(this); 393 child.setOnClickListener(this); 394 child.setClickable(true); 395 super.addView(child, params); 396 } 397 398 /** 399 * @return The open folder on the current screen, or null if there is none 400 */ 401 Folder getOpenFolder() { 402 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 403 int count = currentPage.getChildCount(); 404 for (int i = 0; i < count; i++) { 405 View child = currentPage.getChildAt(i); 406 if (child instanceof Folder) { 407 Folder folder = (Folder) child; 408 if (folder.getInfo().opened) 409 return folder; 410 } 411 } 412 return null; 413 } 414 415 ArrayList<Folder> getOpenFolders() { 416 final int screenCount = getChildCount(); 417 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 418 419 for (int screen = 0; screen < screenCount; screen++) { 420 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 421 int count = currentPage.getChildCount(); 422 for (int i = 0; i < count; i++) { 423 View child = currentPage.getChildAt(i); 424 if (child instanceof Folder) { 425 Folder folder = (Folder) child; 426 if (folder.getInfo().opened) 427 folders.add(folder); 428 break; 429 } 430 } 431 } 432 return folders; 433 } 434 435 boolean isTouchActive() { 436 return mTouchState != TOUCH_STATE_REST; 437 } 438 439 /** 440 * Adds the specified child in the specified screen. The position and dimension of 441 * the child are defined by x, y, spanX and spanY. 442 * 443 * @param child The child to add in one of the workspace's screens. 444 * @param screen The screen in which to add the child. 445 * @param x The X position of the child in the screen's grid. 446 * @param y The Y position of the child in the screen's grid. 447 * @param spanX The number of cells spanned horizontally by the child. 448 * @param spanY The number of cells spanned vertically by the child. 449 */ 450 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 451 addInScreen(child, screen, x, y, spanX, spanY, false); 452 } 453 454 void addInFullScreen(View child, int screen) { 455 addInScreen(child, screen, 0, 0, -1, -1); 456 } 457 458 /** 459 * Adds the specified child in the specified screen. The position and dimension of 460 * the child are defined by x, y, spanX and spanY. 461 * 462 * @param child The child to add in one of the workspace's screens. 463 * @param screen The screen in which to add the child. 464 * @param x The X position of the child in the screen's grid. 465 * @param y The Y position of the child in the screen's grid. 466 * @param spanX The number of cells spanned horizontally by the child. 467 * @param spanY The number of cells spanned vertically by the child. 468 * @param insert When true, the child is inserted at the beginning of the children list. 469 */ 470 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 471 if (screen < 0 || screen >= getChildCount()) { 472 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 473 + " (was " + screen + "); skipping child"); 474 return; 475 } 476 477 final CellLayout group = (CellLayout) getChildAt(screen); 478 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 479 if (lp == null) { 480 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 481 } else { 482 lp.cellX = x; 483 lp.cellY = y; 484 lp.cellHSpan = spanX; 485 lp.cellVSpan = spanY; 486 } 487 488 // Get the canonical child id to uniquely represent this view in this screen 489 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 490 boolean markCellsAsOccupied = !(child instanceof Folder); 491 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 492 // TODO: This branch occurs when the workspace is adding views 493 // outside of the defined grid 494 // maybe we should be deleting these items from the LauncherModel? 495 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 496 } 497 498 if (!(child instanceof Folder)) { 499 child.setHapticFeedbackEnabled(false); 500 child.setOnLongClickListener(mLongClickListener); 501 } 502 if (child instanceof DropTarget) { 503 mDragController.addDropTarget((DropTarget) child); 504 } 505 } 506 507 /** 508 * Check if the point (x, y) hits a given page. 509 */ 510 private boolean hitsPage(int index, float x, float y) { 511 final View page = getChildAt(index); 512 if (page != null) { 513 float[] localXY = { x, y }; 514 mapPointFromSelfToChild(page, localXY); 515 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 516 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 517 } 518 return false; 519 } 520 521 @Override 522 protected boolean hitsPreviousPage(float x, float y) { 523 // mNextPage is set to INVALID_PAGE whenever we are stationary. 524 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 525 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 526 return hitsPage(current - 1, x, y); 527 } 528 529 @Override 530 protected boolean hitsNextPage(float x, float y) { 531 // mNextPage is set to INVALID_PAGE whenever we are stationary. 532 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 533 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 534 return hitsPage(current + 1, x, y); 535 } 536 537 /** 538 * Called directly from a CellLayout (not by the framework), after we've been added as a 539 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 540 * that it should intercept touch events, which is not something that is normally supported. 541 */ 542 @Override 543 public boolean onTouch(View v, MotionEvent event) { 544 return (mIsSmall || mIsInUnshrinkAnimation); 545 } 546 547 /** 548 * Handle a click event on a CellLayout. 549 */ 550 @Override 551 public void onClick(View cellLayout) { 552 // Only allow clicks on a CellLayout if it is shrunken and visible. 553 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 554 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 555 } 556 } 557 558 protected void onWindowVisibilityChanged (int visibility) { 559 mLauncher.onWindowVisibilityChanged(visibility); 560 } 561 562 @Override 563 public boolean dispatchUnhandledMove(View focused, int direction) { 564 if (mIsSmall || mIsInUnshrinkAnimation) { 565 // when the home screens are shrunken, shouldn't allow side-scrolling 566 return false; 567 } 568 return super.dispatchUnhandledMove(focused, direction); 569 } 570 571 @Override 572 public boolean onInterceptTouchEvent(MotionEvent ev) { 573 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 574 mXDown = ev.getX(); 575 mYDown = ev.getY(); 576 } 577 578 if (mIsSmall || mIsInUnshrinkAnimation) { 579 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 580 // Intercept this event so we can show the workspace in full view 581 // when it is clicked on and it is small 582 AllAppsPagedView allApps = (AllAppsPagedView) 583 mLauncher.findViewById(R.id.all_apps_paged_view); 584 if (allApps != null) { 585 allApps.onInterceptTouchEvent(ev); 586 } 587 return true; 588 } 589 return false; 590 } 591 return super.onInterceptTouchEvent(ev); 592 } 593 594 @Override 595 protected void determineScrollingStart(MotionEvent ev) { 596 if (!mIsSmall && !mIsInUnshrinkAnimation) { 597 float deltaX = Math.abs(ev.getX() - mXDown); 598 float deltaY = Math.abs(ev.getY() - mYDown); 599 600 if (Float.compare(deltaX, 0f) == 0) return; 601 602 float slope = deltaY / deltaX; 603 float theta = (float) Math.atan(slope); 604 605 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 606 cancelCurrentPageLongPress(); 607 } 608 609 if (theta > MAX_SWIPE_ANGLE) { 610 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 611 return; 612 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 613 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 614 // increase the touch slop to make it harder to begin scrolling the workspace. This 615 // results in vertically scrolling widgets to more easily. The higher the angle, the 616 // more we increase touch slop. 617 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 618 float extraRatio = (float) 619 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 620 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 621 } else { 622 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 623 super.determineScrollingStart(ev); 624 } 625 } 626 } 627 628 protected void onPageBeginMoving() { 629 if (mNextPage != INVALID_PAGE) { 630 // we're snapping to a particular screen 631 enableChildrenCache(mCurrentPage, mNextPage); 632 } else { 633 // this is when user is actively dragging a particular screen, they might 634 // swipe it either left or right (but we won't advance by more than one screen) 635 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 636 } 637 showOutlines(); 638 } 639 640 protected void onPageEndMoving() { 641 clearChildrenCache(); 642 // Hide the outlines, as long as we're not dragging 643 if (!mDragController.dragging()) { 644 hideOutlines(); 645 } 646 mOverScrollMaxBackgroundAlpha = 0.0f; 647 mOverScrollPageIndex = -1; 648 } 649 650 @Override 651 protected void notifyPageSwitchListener() { 652 super.notifyPageSwitchListener(); 653 654 if (mPreviousIndicator != null) { 655 // if we know the next page, we show the indication for it right away; it looks 656 // weird if the indicators are lagging 657 int page = mNextPage; 658 if (page == INVALID_PAGE) { 659 page = mCurrentPage; 660 } 661 mPreviousIndicator.setLevel(page); 662 mNextIndicator.setLevel(page); 663 } 664 Launcher.setScreen(mCurrentPage); 665 }; 666 667 // As a ratio of screen height, the total distance we want the parallax effect to span 668 // vertically 669 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 670 return 1.1f; 671 } 672 673 // As a ratio of screen height, the total distance we want the parallax effect to span 674 // horizontally 675 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 676 float aspectRatio = width / (float) height; 677 678 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 679 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 680 // We will use these two data points to extrapolate how much the wallpaper parallax effect 681 // to span (ie travel) at any aspect ratio: 682 683 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 684 final float ASPECT_RATIO_PORTRAIT = 10/16f; 685 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 686 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 687 688 // To find out the desired width at different aspect ratios, we use the following two 689 // formulas, where the coefficient on x is the aspect ratio (width/height): 690 // (16/10)x + y = 1.5 691 // (10/16)x + y = 1.2 692 // We solve for x and y and end up with a final formula: 693 final float x = 694 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 695 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 696 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 697 return x * aspectRatio + y; 698 } 699 700 // The range of scroll values for Workspace 701 private int getScrollRange() { 702 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 703 } 704 705 protected void setWallpaperDimension() { 706 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 707 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 708 final int minDim = Math.min(display.getWidth(), display.getHeight()); 709 710 // We need to ensure that there is enough extra space in the wallpaper for the intended 711 // parallax effects 712 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 713 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 714 new Thread("setWallpaperDimension") { 715 public void run() { 716 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 717 } 718 }.start(); 719 } 720 721 public void setVerticalWallpaperOffset(float offset) { 722 mWallpaperOffset.setFinalY(offset); 723 } 724 public float getVerticalWallpaperOffset() { 725 return mWallpaperOffset.getCurrY(); 726 } 727 public void setHorizontalWallpaperOffset(float offset) { 728 mWallpaperOffset.setFinalX(offset); 729 } 730 public float getHorizontalWallpaperOffset() { 731 return mWallpaperOffset.getCurrX(); 732 } 733 734 private float wallpaperOffsetForCurrentScroll() { 735 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 736 // The wallpaper travel width is how far, from left to right, the wallpaper will move 737 // at this orientation (for example, in portrait mode we don't move all the way to the 738 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 739 int wallpaperTravelWidth = (int) (display.getWidth() * 740 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 741 742 // Set wallpaper offset steps (1 / (number of screens - 1)) 743 // We have 3 vertical offset states (centered, and then top/bottom aligned 744 // for all apps/customize) 745 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 746 747 int scrollRange = getScrollRange(); 748 float scrollProgressOffset = 0; 749 750 // Account for overscroll: you only see the absolute edge of the wallpaper if 751 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 752 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 753 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 754 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 755 if (isStaticWallpaper) { 756 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 757 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 758 scrollRange += 2 * overscrollOffset; 759 } 760 761 float scrollProgress = 762 mScrollX / (float) scrollRange + scrollProgressOffset; 763 float offsetInDips = wallpaperTravelWidth * scrollProgress + 764 (mWallpaperWidth - wallpaperTravelWidth) / 2; 765 float offset = offsetInDips / (float) mWallpaperWidth; 766 return offset; 767 } 768 private void syncWallpaperOffsetWithScroll() { 769 if (LauncherApplication.isScreenXLarge()) { 770 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 771 } 772 } 773 774 public void updateWallpaperOffsetImmediately() { 775 mUpdateWallpaperOffsetImmediately = true; 776 } 777 778 private void updateWallpaperOffsets() { 779 boolean updateNow = false; 780 boolean keepUpdating = true; 781 if (mUpdateWallpaperOffsetImmediately) { 782 updateNow = true; 783 keepUpdating = false; 784 mWallpaperOffset.jumpToFinal(); 785 mUpdateWallpaperOffsetImmediately = false; 786 } else { 787 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 788 } 789 if (updateNow) { 790 if (mWindowToken != null) { 791 mWallpaperManager.setWallpaperOffsets(mWindowToken, 792 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 793 } 794 } 795 if (keepUpdating) { 796 fastInvalidate(); 797 } 798 } 799 800 class WallpaperOffsetInterpolator { 801 float mFinalHorizontalWallpaperOffset = 0.0f; 802 float mFinalVerticalWallpaperOffset = 0.5f; 803 float mHorizontalWallpaperOffset = 0.0f; 804 float mVerticalWallpaperOffset = 0.5f; 805 long mLastWallpaperOffsetUpdateTime; 806 boolean mIsMovingFast; 807 boolean mOverrideHorizontalCatchupConstant; 808 float mHorizontalCatchupConstant = 0.35f; 809 float mVerticalCatchupConstant = 0.35f; 810 811 public WallpaperOffsetInterpolator() { 812 } 813 814 public void setOverrideHorizontalCatchupConstant(boolean override) { 815 mOverrideHorizontalCatchupConstant = override; 816 } 817 818 public void setHorizontalCatchupConstant(float f) { 819 mHorizontalCatchupConstant = f; 820 } 821 822 public void setVerticalCatchupConstant(float f) { 823 mVerticalCatchupConstant = f; 824 } 825 826 public boolean computeScrollOffset() { 827 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 828 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 829 mIsMovingFast = false; 830 return false; 831 } 832 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 833 boolean isLandscape = display.getWidth() > display.getHeight(); 834 835 long currentTime = System.currentTimeMillis(); 836 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 837 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 838 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 839 840 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 841 if (!mIsMovingFast && xdiff > 0.07) { 842 mIsMovingFast = true; 843 } 844 845 float fractionToCatchUpIn1MsHorizontal; 846 if (mOverrideHorizontalCatchupConstant) { 847 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 848 } else if (mIsMovingFast) { 849 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 850 } else { 851 // slow 852 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 853 } 854 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 855 856 857 fractionToCatchUpIn1MsHorizontal /= 33f; 858 fractionToCatchUpIn1MsVertical /= 33f; 859 860 final float UPDATE_THRESHOLD = 0.00001f; 861 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 862 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 863 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 864 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 865 if (jumpToFinalValue) { 866 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 867 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 868 } else { 869 float percentToCatchUpVertical = 870 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 871 float percentToCatchUpHorizontal = 872 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 873 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 874 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 875 } 876 877 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 878 return true; 879 } 880 881 public float getCurrX() { 882 return mHorizontalWallpaperOffset; 883 } 884 885 public float getFinalX() { 886 return mFinalHorizontalWallpaperOffset; 887 } 888 889 public float getCurrY() { 890 return mVerticalWallpaperOffset; 891 } 892 893 public float getFinalY() { 894 return mFinalVerticalWallpaperOffset; 895 } 896 897 public void setFinalX(float x) { 898 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 899 } 900 901 public void setFinalY(float y) { 902 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 903 } 904 905 public void jumpToFinal() { 906 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 907 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 908 } 909 } 910 911 @Override 912 public void computeScroll() { 913 super.computeScroll(); 914 if (mSyncWallpaperOffsetWithScroll) { 915 syncWallpaperOffsetWithScroll(); 916 } 917 } 918 919 void showOutlines() { 920 if (!mIsSmall && !mIsInUnshrinkAnimation) { 921 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 922 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 923 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 924 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 925 mChildrenOutlineFadeInAnimation.start(); 926 } 927 } 928 929 void hideOutlines() { 930 if (!mIsSmall && !mIsInUnshrinkAnimation) { 931 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 932 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 933 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 934 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 935 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 936 mChildrenOutlineFadeOutAnimation.start(); 937 } 938 } 939 940 public void showOutlinesTemporarily() { 941 if (!mIsPageMoving && !isTouchActive()) { 942 snapToPage(mCurrentPage); 943 } 944 } 945 946 public void setChildrenOutlineAlpha(float alpha) { 947 mChildrenOutlineAlpha = alpha; 948 for (int i = 0; i < getChildCount(); i++) { 949 CellLayout cl = (CellLayout) getChildAt(i); 950 cl.setBackgroundAlpha(alpha); 951 } 952 } 953 954 public float getChildrenOutlineAlpha() { 955 return mChildrenOutlineAlpha; 956 } 957 958 void disableBackground() { 959 mDrawBackground = false; 960 } 961 void enableBackground() { 962 mDrawBackground = true; 963 } 964 965 private void showBackgroundGradientForAllApps() { 966 showBackgroundGradient(); 967 mDrawCustomizeTrayBackground = false; 968 } 969 970 private void showBackgroundGradientForCustomizeTray() { 971 showBackgroundGradient(); 972 mDrawCustomizeTrayBackground = true; 973 } 974 975 private void showBackgroundGradient() { 976 if (mBackground == null) return; 977 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 978 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 979 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 980 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 981 public void onAnimationUpdate(ValueAnimator animation) { 982 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 983 } 984 }); 985 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 986 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 987 mBackgroundFadeInAnimation.start(); 988 } 989 990 private void hideBackgroundGradient() { 991 if (mBackground == null) return; 992 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 993 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 994 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 995 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 996 public void onAnimationUpdate(ValueAnimator animation) { 997 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 998 } 999 }); 1000 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1001 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1002 mBackgroundFadeOutAnimation.start(); 1003 } 1004 1005 public void setBackgroundAlpha(float alpha) { 1006 if (alpha != mBackgroundAlpha) { 1007 mBackgroundAlpha = alpha; 1008 invalidate(); 1009 } 1010 } 1011 1012 public float getBackgroundAlpha() { 1013 return mBackgroundAlpha; 1014 } 1015 1016 /** 1017 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1018 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1019 * as being larger. This method computes what offset the rotated view should be translated 1020 * in order to minimize this perceived gap. 1021 * @param degrees Angle of the view 1022 * @param width Width of the view 1023 * @param height Height of the view 1024 * @return Offset to be used in a View.setTranslationX() call 1025 */ 1026 private float getOffsetXForRotation(float degrees, int width, int height) { 1027 mMatrix.reset(); 1028 mCamera.save(); 1029 mCamera.rotateY(Math.abs(degrees)); 1030 mCamera.getMatrix(mMatrix); 1031 mCamera.restore(); 1032 1033 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1034 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1035 mTempFloat2[0] = width; 1036 mTempFloat2[1] = height; 1037 mMatrix.mapPoints(mTempFloat2); 1038 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1039 } 1040 1041 float backgroundAlphaInterpolator(float r) { 1042 float pivotA = 0.1f; 1043 float pivotB = 0.4f; 1044 if (r < pivotA) { 1045 return 0; 1046 } else if (r > pivotB) { 1047 return 1.0f; 1048 } else { 1049 return (r - pivotA)/(pivotB - pivotA); 1050 } 1051 } 1052 1053 float overScrollBackgroundAlphaInterpolator(float r) { 1054 float threshold = 0.08f; 1055 1056 if (r > mOverScrollMaxBackgroundAlpha) { 1057 mOverScrollMaxBackgroundAlpha = r; 1058 } else if (r < mOverScrollMaxBackgroundAlpha) { 1059 r = mOverScrollMaxBackgroundAlpha; 1060 } 1061 1062 return Math.min(r / threshold, 1.0f); 1063 } 1064 1065 @Override 1066 protected void screenScrolled(int screenCenter) { 1067 final int halfScreenSize = getMeasuredWidth() / 2; 1068 1069 for (int i = 0; i < getChildCount(); i++) { 1070 CellLayout cl = (CellLayout) getChildAt(i); 1071 if (cl != null) { 1072 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1073 int delta = screenCenter - (getChildOffset(i) - 1074 getRelativeChildOffset(i) + halfScreenSize); 1075 1076 float scrollProgress = delta / (totalDistance * 1.0f); 1077 scrollProgress = Math.min(scrollProgress, 1.0f); 1078 scrollProgress = Math.max(scrollProgress, -1.0f); 1079 1080 // If the current page (i) is being overscrolled, we use a different 1081 // set of rules for setting the background alpha multiplier. 1082 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1083 i == getChildCount() -1 )) { 1084 cl.setBackgroundAlphaMultiplier( 1085 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1086 mOverScrollPageIndex = i; 1087 } else if (mOverScrollPageIndex != i) { 1088 cl.setBackgroundAlphaMultiplier( 1089 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1090 } 1091 1092 float rotation = WORKSPACE_ROTATION * scrollProgress; 1093 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1094 cl.setTranslationX(translationX); 1095 1096 cl.setRotationY(rotation); 1097 } 1098 } 1099 } 1100 1101 protected void onAttachedToWindow() { 1102 super.onAttachedToWindow(); 1103 mWindowToken = getWindowToken(); 1104 computeScroll(); 1105 mDragController.setWindowToken(mWindowToken); 1106 } 1107 1108 protected void onDetachedFromWindow() { 1109 mWindowToken = null; 1110 } 1111 1112 @Override 1113 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1114 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1115 mUpdateWallpaperOffsetImmediately = true; 1116 } 1117 super.onLayout(changed, left, top, right, bottom); 1118 1119 // if shrinkToBottom() is called on initialization, it has to be deferred 1120 // until after the first call to onLayout so that it has the correct width 1121 if (mWaitingToShrink) { 1122 // shrink can trigger a synchronous onLayout call, so we 1123 // post this to avoid a stack overflow / tangled onLayout calls 1124 post(new Runnable() { 1125 public void run() { 1126 shrink(mWaitingToShrinkState, false); 1127 mWaitingToShrink = false; 1128 } 1129 }); 1130 } 1131 1132 if (LauncherApplication.isInPlaceRotationEnabled()) { 1133 // When the device is rotated, the scroll position of the current screen 1134 // needs to be refreshed 1135 setCurrentPage(getCurrentPage()); 1136 } 1137 } 1138 1139 @Override 1140 protected void onDraw(Canvas canvas) { 1141 updateWallpaperOffsets(); 1142 1143 // Draw the background gradient if necessary 1144 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1145 int alpha = (int) (mBackgroundAlpha * 255); 1146 if (mDrawCustomizeTrayBackground) { 1147 // Find out where to offset the gradient for the customization tray content 1148 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1149 final Matrix m = mCustomizationDrawer.getMatrix(); 1150 mCustomizationDrawerTransformedPos[0] = 0.0f; 1151 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1152 m.mapPoints(mCustomizationDrawerTransformedPos); 1153 1154 // Draw the bg glow behind the gradient 1155 mCustomizeTrayBackground.setAlpha(alpha); 1156 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1157 getMeasuredHeight()); 1158 mCustomizeTrayBackground.draw(canvas); 1159 1160 // Draw the bg gradient 1161 final int offset = (int) (mCustomizationDrawerPos[1] + 1162 mCustomizationDrawerTransformedPos[1]); 1163 mBackground.setAlpha(alpha); 1164 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1165 offset + getMeasuredHeight()); 1166 mBackground.draw(canvas); 1167 } else { 1168 mBackground.setAlpha(alpha); 1169 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1170 getMeasuredHeight()); 1171 mBackground.draw(canvas); 1172 } 1173 } 1174 super.onDraw(canvas); 1175 } 1176 1177 @Override 1178 protected void dispatchDraw(Canvas canvas) { 1179 if (mIsSmall || mIsInUnshrinkAnimation) { 1180 // Draw all the workspaces if we're small 1181 final int pageCount = getChildCount(); 1182 final long drawingTime = getDrawingTime(); 1183 for (int i = 0; i < pageCount; i++) { 1184 final View page = (View) getChildAt(i); 1185 if (page.getVisibility() == VISIBLE && page.getAlpha() != 0f) { 1186 drawChild(canvas, page, drawingTime); 1187 } 1188 } 1189 } else { 1190 super.dispatchDraw(canvas); 1191 1192 final int width = getWidth(); 1193 final int height = getHeight(); 1194 1195 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1196 if (mInScrollArea && (height > width)) { 1197 final int pageHeight = getChildAt(0).getHeight(); 1198 1199 // This determines the height of the glowing edge: 90% of the page height 1200 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1201 1202 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1203 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1204 1205 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1206 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1207 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1208 d.draw(canvas); 1209 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1210 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1211 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1212 d.draw(canvas); 1213 } 1214 } 1215 1216 if (mDropView != null) { 1217 // We are animating an item that was just dropped on the home screen. 1218 // Render its View in the current animation position. 1219 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1220 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1221 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1222 canvas.translate(xPos, yPos); 1223 mDropView.draw(canvas); 1224 canvas.restore(); 1225 } 1226 } 1227 } 1228 1229 @Override 1230 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1231 if (!mLauncher.isAllAppsVisible()) { 1232 final Folder openFolder = getOpenFolder(); 1233 if (openFolder != null) { 1234 return openFolder.requestFocus(direction, previouslyFocusedRect); 1235 } else { 1236 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1237 } 1238 } 1239 return false; 1240 } 1241 1242 @Override 1243 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1244 if (!mLauncher.isAllAppsVisible()) { 1245 final Folder openFolder = getOpenFolder(); 1246 if (openFolder != null) { 1247 openFolder.addFocusables(views, direction); 1248 } else { 1249 super.addFocusables(views, direction, focusableMode); 1250 } 1251 } 1252 } 1253 1254 @Override 1255 public boolean dispatchTouchEvent(MotionEvent ev) { 1256 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1257 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1258 // ie when you click on a mini-screen, it zooms back to that screen) 1259 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1260 return false; 1261 } 1262 } 1263 1264 return super.dispatchTouchEvent(ev); 1265 } 1266 1267 void enableChildrenCache(int fromPage, int toPage) { 1268 if (fromPage > toPage) { 1269 final int temp = fromPage; 1270 fromPage = toPage; 1271 toPage = temp; 1272 } 1273 1274 final int screenCount = getChildCount(); 1275 1276 fromPage = Math.max(fromPage, 0); 1277 toPage = Math.min(toPage, screenCount - 1); 1278 1279 for (int i = fromPage; i <= toPage; i++) { 1280 final CellLayout layout = (CellLayout) getChildAt(i); 1281 layout.setChildrenDrawnWithCacheEnabled(true); 1282 layout.setChildrenDrawingCacheEnabled(true); 1283 } 1284 } 1285 1286 void clearChildrenCache() { 1287 final int screenCount = getChildCount(); 1288 for (int i = 0; i < screenCount; i++) { 1289 final CellLayout layout = (CellLayout) getChildAt(i); 1290 layout.setChildrenDrawnWithCacheEnabled(false); 1291 } 1292 } 1293 1294 @Override 1295 public boolean onTouchEvent(MotionEvent ev) { 1296 AllAppsPagedView allApps = (AllAppsPagedView) 1297 mLauncher.findViewById(R.id.all_apps_paged_view); 1298 1299 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1300 && allApps != null) { 1301 if (ev.getAction() == MotionEvent.ACTION_UP && 1302 allApps.getTouchState() == TOUCH_STATE_REST) { 1303 1304 // Cancel any scrolling that is in progress. 1305 if (!mScroller.isFinished()) { 1306 mScroller.abortAnimation(); 1307 } 1308 setCurrentPage(mCurrentPage); 1309 1310 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1311 mLauncher.showWorkspace(true); 1312 } 1313 allApps.onTouchEvent(ev); 1314 return true; 1315 } else { 1316 return allApps.onTouchEvent(ev); 1317 } 1318 } 1319 return super.onTouchEvent(ev); 1320 } 1321 1322 protected void enableChildrenLayers(boolean enable) { 1323 for (int i = 0; i < getPageCount(); i++) { 1324 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1325 } 1326 } 1327 @Override 1328 protected void pageBeginMoving() { 1329 enableChildrenLayers(true); 1330 super.pageBeginMoving(); 1331 } 1332 1333 @Override 1334 protected void pageEndMoving() { 1335 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1336 enableChildrenLayers(false); 1337 } 1338 super.pageEndMoving(); 1339 } 1340 1341 @Override 1342 protected void onWallpaperTap(MotionEvent ev) { 1343 final int[] position = mTempCell; 1344 getLocationOnScreen(position); 1345 1346 int pointerIndex = ev.getActionIndex(); 1347 position[0] += (int) ev.getX(pointerIndex); 1348 position[1] += (int) ev.getY(pointerIndex); 1349 1350 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1351 ev.getAction() == MotionEvent.ACTION_UP 1352 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1353 position[0], position[1], 0, null); 1354 } 1355 1356 public boolean isSmall() { 1357 return mIsSmall; 1358 } 1359 1360 private float getYScaleForScreen(int screen) { 1361 int x = Math.abs(screen - 2); 1362 1363 // TODO: This should be generalized for use with arbitrary rotation angles. 1364 switch(x) { 1365 case 0: return EXTRA_SCALE_FACTOR_0; 1366 case 1: return EXTRA_SCALE_FACTOR_1; 1367 case 2: return EXTRA_SCALE_FACTOR_2; 1368 } 1369 return 1.0f; 1370 } 1371 1372 public void shrink(ShrinkState shrinkState) { 1373 shrink(shrinkState, true); 1374 } 1375 1376 private int getCustomizeDrawerHeight() { 1377 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1378 int height = customizationDrawer.getHeight(); 1379 TabWidget tabWidget = (TabWidget) 1380 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1381 if (tabWidget.getTabCount() > 0) { 1382 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1383 // subtract the empty space above the tab text 1384 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1385 } 1386 return height; 1387 } 1388 1389 // we use this to shrink the workspace for the all apps view and the customize view 1390 public void shrink(ShrinkState shrinkState, boolean animated) { 1391 // In the launcher interaction model, we're never in the state where we're shrunken and 1392 // visible in the bottom of the screen, and then want to fade to being invisible. 1393 // After spring loaded mode ends, this method was getting called twice, the first time 1394 // with BOTTOM_VISIBLE (what we want) and a second time with BOTTOM_INVISIBLE (not 1395 // what we want). As a temporary solution, we just change the second call to BOTTOM_VISIBLE 1396 if (mIsSmall && mShrinkState == ShrinkState.BOTTOM_VISIBLE) { 1397 shrinkState = ShrinkState.BOTTOM_VISIBLE; 1398 } 1399 if (mFirstLayout) { 1400 // (mFirstLayout == "first layout has not happened yet") 1401 // if we get a call to shrink() as part of our initialization (for example, if 1402 // Launcher is started in All Apps mode) then we need to wait for a layout call 1403 // to get our width so we can layout the mini-screen views correctly 1404 mWaitingToShrink = true; 1405 mWaitingToShrinkState = shrinkState; 1406 return; 1407 } 1408 // Stop any scrolling, move to the current page right away 1409 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1410 if (!mIsDragInProcess) { 1411 updateWhichPagesAcceptDrops(shrinkState); 1412 } 1413 1414 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1415 if (currentPage == null) { 1416 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1417 + " mNextPage " + mNextPage); 1418 return; 1419 } 1420 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1421 currentPage.setBackgroundAlpha(0.0f); 1422 } 1423 currentPage.setBackgroundAlphaMultiplier(1.0f); 1424 1425 mIsSmall = true; 1426 mShrinkState = shrinkState; 1427 1428 // we intercept and reject all touch events when we're small, so be sure to reset the state 1429 mTouchState = TOUCH_STATE_REST; 1430 mActivePointerId = INVALID_POINTER; 1431 1432 final Resources res = getResources(); 1433 final int screenWidth = getWidth(); 1434 final int screenHeight = getHeight(); 1435 1436 // Making the assumption that all pages have the same width as the 0th 1437 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1438 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1439 1440 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1441 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1442 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1443 1444 final int screenCount = getChildCount(); 1445 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1446 1447 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1448 float y = (isPortrait ? 1449 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1450 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1451 float finalAlpha = 1.0f; 1452 float extraShrinkFactor = 1.0f; 1453 1454 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1455 y = screenHeight - y - scaledPageHeight; 1456 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1457 // We shrink and disappear to nothing in the case of all apps 1458 // (which is when we shrink to the bottom) 1459 y = screenHeight - y - scaledPageHeight; 1460 finalAlpha = 0.0f; 1461 } else if (shrinkState == ShrinkState.MIDDLE) { 1462 y = screenHeight / 2 - scaledPageHeight / 2; 1463 finalAlpha = 1.0f; 1464 } else if (shrinkState == ShrinkState.TOP) { 1465 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1466 } 1467 1468 int duration; 1469 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1470 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1471 } else { 1472 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1473 } 1474 1475 // We animate all the screens to the centered position in workspace 1476 // At the same time, the screens become greyed/dimmed 1477 1478 // newX is initialized to the left-most position of the centered screens 1479 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1480 1481 // We are going to scale about the center of the view, so we need to adjust the positions 1482 // of the views accordingly 1483 x -= (pageWidth - scaledPageWidth) / 2.0f; 1484 y -= (pageHeight - scaledPageHeight) / 2.0f; 1485 1486 if (mAnimator != null) { 1487 mAnimator.cancel(); 1488 } 1489 1490 mAnimator = new AnimatorSet(); 1491 1492 final float[] oldXs = new float[getChildCount()]; 1493 final float[] oldYs = new float[getChildCount()]; 1494 final float[] oldScaleXs = new float[getChildCount()]; 1495 final float[] oldScaleYs = new float[getChildCount()]; 1496 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1497 final float[] oldAlphas = new float[getChildCount()]; 1498 final float[] oldRotationYs = new float[getChildCount()]; 1499 final float[] newXs = new float[getChildCount()]; 1500 final float[] newYs = new float[getChildCount()]; 1501 final float[] newScaleXs = new float[getChildCount()]; 1502 final float[] newScaleYs = new float[getChildCount()]; 1503 final float[] newBackgroundAlphas = new float[getChildCount()]; 1504 final float[] newAlphas = new float[getChildCount()]; 1505 final float[] newRotationYs = new float[getChildCount()]; 1506 1507 for (int i = 0; i < screenCount; i++) { 1508 final CellLayout cl = (CellLayout) getChildAt(i); 1509 1510 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1511 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1512 float rotationScaleY = getYScaleForScreen(i); 1513 1514 oldAlphas[i] = cl.getAlpha(); 1515 newAlphas[i] = finalAlpha; 1516 if (animated) { 1517 oldXs[i] = cl.getX(); 1518 oldYs[i] = cl.getY(); 1519 oldScaleXs[i] = cl.getScaleX(); 1520 oldScaleYs[i] = cl.getScaleY(); 1521 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1522 oldRotationYs[i] = cl.getRotationY(); 1523 newXs[i] = x; 1524 newYs[i] = y; 1525 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1526 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1527 newBackgroundAlphas[i] = finalAlpha; 1528 newRotationYs[i] = rotation; 1529 } else { 1530 cl.setX((int)x); 1531 cl.setY((int)y); 1532 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1533 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1534 cl.setBackgroundAlpha(finalAlpha); 1535 cl.setAlpha(finalAlpha); 1536 cl.setRotationY(rotation); 1537 mShrinkAnimationListener.onAnimationEnd(null); 1538 } 1539 // increment newX for the next screen 1540 x += scaledPageWidth + extraScaledSpacing; 1541 } 1542 1543 float wallpaperOffset = 0.5f; 1544 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1545 int wallpaperTravelHeight = (int) (display.getHeight() * 1546 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1547 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1548 boolean isLandscape = display.getWidth() > display.getHeight(); 1549 1550 switch (shrinkState) { 1551 // animating in 1552 case TOP: 1553 // customize 1554 wallpaperOffset = 0.5f + offsetFromCenter; 1555 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1556 break; 1557 case MIDDLE: 1558 case SPRING_LOADED: 1559 wallpaperOffset = 0.5f; 1560 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1561 break; 1562 case BOTTOM_HIDDEN: 1563 case BOTTOM_VISIBLE: 1564 // allapps 1565 wallpaperOffset = 0.5f - offsetFromCenter; 1566 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1567 break; 1568 } 1569 1570 setLayoutScale(1.0f); 1571 if (animated) { 1572 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1573 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1574 1575 mSyncWallpaperOffsetWithScroll = false; 1576 1577 ValueAnimator animWithInterpolator = 1578 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1579 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1580 1581 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1582 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1583 final float newHorizontalWallpaperOffset = 0.5f; 1584 final float newVerticalWallpaperOffset = wallpaperOffset; 1585 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1586 public void onAnimationUpdate(ValueAnimator animation) { 1587 final float b = (Float) animation.getAnimatedValue(); 1588 final float a = 1f - b; 1589 if (b == 0f) { 1590 // an optimization, and required for correct behavior. 1591 return; 1592 } 1593 fastInvalidate(); 1594 setHorizontalWallpaperOffset( 1595 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1596 setVerticalWallpaperOffset( 1597 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1598 for (int i = 0; i < screenCount; i++) { 1599 final CellLayout cl = (CellLayout) getChildAt(i); 1600 cl.fastInvalidate(); 1601 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1602 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1603 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1604 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1605 cl.setFastBackgroundAlpha( 1606 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1607 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1608 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1609 } 1610 } 1611 }); 1612 mAnimator.playTogether(animWithInterpolator); 1613 mAnimator.addListener(mShrinkAnimationListener); 1614 mAnimator.start(); 1615 } else { 1616 setVerticalWallpaperOffset(wallpaperOffset); 1617 setHorizontalWallpaperOffset(0.5f); 1618 updateWallpaperOffsetImmediately(); 1619 } 1620 setChildrenDrawnWithCacheEnabled(true); 1621 1622 if (shrinkState == ShrinkState.TOP) { 1623 showBackgroundGradientForCustomizeTray(); 1624 } else { 1625 showBackgroundGradientForAllApps(); 1626 } 1627 } 1628 1629 /* 1630 * This interpolator emulates the rate at which the perceived scale of an object changes 1631 * as its distance from a camera increases. When this interpolator is applied to a scale 1632 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1633 * from the camera. 1634 */ 1635 static class ZInterpolator implements TimeInterpolator { 1636 private float focalLength; 1637 1638 public ZInterpolator(float foc) { 1639 focalLength = foc; 1640 } 1641 1642 public float getInterpolation(float input) { 1643 return (1.0f - focalLength / (focalLength + input)) / 1644 (1.0f - focalLength / (focalLength + 1.0f)); 1645 } 1646 } 1647 1648 /* 1649 * The exact reverse of ZInterpolator. 1650 */ 1651 static class InverseZInterpolator implements TimeInterpolator { 1652 private ZInterpolator zInterpolator; 1653 public InverseZInterpolator(float foc) { 1654 zInterpolator = new ZInterpolator(foc); 1655 } 1656 public float getInterpolation(float input) { 1657 return 1 - zInterpolator.getInterpolation(1 - input); 1658 } 1659 } 1660 1661 /* 1662 * ZInterpolator compounded with an ease-out. 1663 */ 1664 static class ZoomOutInterpolator implements TimeInterpolator { 1665 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1666 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1667 1668 public float getInterpolation(float input) { 1669 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1670 } 1671 } 1672 1673 /* 1674 * InvereZInterpolator compounded with an ease-out. 1675 */ 1676 static class ZoomInInterpolator implements TimeInterpolator { 1677 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1678 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1679 1680 public float getInterpolation(float input) { 1681 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1682 } 1683 } 1684 1685 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1686 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1687 1688 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1689 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1690 } 1691 1692 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1693 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1694 } 1695 1696 private void updateWhichPagesAcceptDropsHelper( 1697 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1698 final int screenCount = getChildCount(); 1699 for (int i = 0; i < screenCount; i++) { 1700 CellLayout cl = (CellLayout) getChildAt(i); 1701 cl.setIsDragOccuring(isDragHappening); 1702 switch (state) { 1703 case TOP: 1704 cl.setIsDefaultDropTarget(i == mCurrentPage); 1705 case BOTTOM_HIDDEN: 1706 case BOTTOM_VISIBLE: 1707 case SPRING_LOADED: 1708 if (state != ShrinkState.TOP) { 1709 cl.setIsDefaultDropTarget(false); 1710 } 1711 if (!isDragHappening) { 1712 // even if a drag isn't happening, we don't want to show a screen as 1713 // accepting drops if it doesn't have at least one free cell 1714 spanX = 1; 1715 spanY = 1; 1716 } 1717 // the page accepts drops if we can find at least one empty spot 1718 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1719 break; 1720 default: 1721 throw new RuntimeException("Unhandled ShrinkState " + state); 1722 } 1723 } 1724 } 1725 1726 /* 1727 * 1728 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1729 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1730 * 1731 * These methods mark the appropriate pages as accepting drops (which alters their visual 1732 * appearance). 1733 * 1734 */ 1735 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1736 mIsDragInProcess = true; 1737 1738 final Canvas canvas = new Canvas(); 1739 1740 // We need to add extra padding to the bitmap to make room for the glow effect 1741 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1742 1743 CellLayout cl = (CellLayout) getChildAt(0); 1744 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1745 // The outline is used to visualize where the item will land if dropped 1746 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1747 1748 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1749 } 1750 1751 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1752 // never dragged over 1753 public void onDragStopped(boolean success) { 1754 mLastDragView = null; 1755 // In the success case, DragController has already called onDragExit() 1756 if (!success) { 1757 doDragExit(); 1758 } 1759 mIsDragInProcess = false; 1760 updateWhichPagesAcceptDrops(mShrinkState); 1761 } 1762 1763 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1764 public void unshrink(CellLayout clThatWasClicked) { 1765 unshrink(clThatWasClicked, false); 1766 } 1767 1768 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1769 int newCurrentPage = indexOfChild(clThatWasClicked); 1770 if (mIsSmall) { 1771 if (springLoaded) { 1772 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1773 } 1774 scrollToNewPageWithoutMovingPages(newCurrentPage); 1775 unshrink(true, springLoaded); 1776 } 1777 } 1778 1779 1780 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1781 mShrinkState = ShrinkState.SPRING_LOADED; 1782 unshrink(clThatWasClicked, true); 1783 mDragTargetLayout.onDragEnter(); 1784 } 1785 1786 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1787 shrink(shrinkState); 1788 if (mDragTargetLayout != null) { 1789 mDragTargetLayout.onDragExit(); 1790 } 1791 } 1792 1793 void unshrink(boolean animated) { 1794 unshrink(animated, false); 1795 } 1796 1797 void unshrink(boolean animated, boolean springLoaded) { 1798 mWaitingToShrink = false; 1799 if (mIsSmall) { 1800 float finalScaleFactor = 1.0f; 1801 float finalBackgroundAlpha = 0.0f; 1802 if (springLoaded) { 1803 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1804 finalBackgroundAlpha = 1.0f; 1805 } else { 1806 mIsSmall = false; 1807 } 1808 if (mAnimator != null) { 1809 mAnimator.cancel(); 1810 } 1811 1812 mAnimator = new AnimatorSet(); 1813 final int screenCount = getChildCount(); 1814 1815 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1816 1817 final float[] oldTranslationXs = new float[getChildCount()]; 1818 final float[] oldTranslationYs = new float[getChildCount()]; 1819 final float[] oldScaleXs = new float[getChildCount()]; 1820 final float[] oldScaleYs = new float[getChildCount()]; 1821 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1822 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1823 final float[] oldAlphas = new float[getChildCount()]; 1824 final float[] oldRotationYs = new float[getChildCount()]; 1825 final float[] newTranslationXs = new float[getChildCount()]; 1826 final float[] newTranslationYs = new float[getChildCount()]; 1827 final float[] newScaleXs = new float[getChildCount()]; 1828 final float[] newScaleYs = new float[getChildCount()]; 1829 final float[] newBackgroundAlphas = new float[getChildCount()]; 1830 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1831 final float[] newAlphas = new float[getChildCount()]; 1832 final float[] newRotationYs = new float[getChildCount()]; 1833 1834 for (int i = 0; i < screenCount; i++) { 1835 final CellLayout cl = (CellLayout)getChildAt(i); 1836 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1837 float finalAlphaMultiplierValue = 1838 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1839 0.0f : 1.0f; 1840 float rotation = 0.0f; 1841 1842 if (i < mCurrentPage) { 1843 rotation = WORKSPACE_ROTATION; 1844 } else if (i > mCurrentPage) { 1845 rotation = -WORKSPACE_ROTATION; 1846 } 1847 1848 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1849 1850 oldAlphas[i] = cl.getAlpha(); 1851 newAlphas[i] = finalAlphaValue; 1852 if (animated) { 1853 oldTranslationXs[i] = cl.getTranslationX(); 1854 oldTranslationYs[i] = cl.getTranslationY(); 1855 oldScaleXs[i] = cl.getScaleX(); 1856 oldScaleYs[i] = cl.getScaleY(); 1857 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1858 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1859 oldRotationYs[i] = cl.getRotationY(); 1860 1861 newTranslationXs[i] = translation; 1862 newTranslationYs[i] = 0f; 1863 newScaleXs[i] = finalScaleFactor; 1864 newScaleYs[i] = finalScaleFactor; 1865 newBackgroundAlphas[i] = finalBackgroundAlpha; 1866 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1867 newRotationYs[i] = rotation; 1868 } else { 1869 cl.setTranslationX(translation); 1870 cl.setTranslationY(0.0f); 1871 cl.setScaleX(finalScaleFactor); 1872 cl.setScaleY(finalScaleFactor); 1873 cl.setBackgroundAlpha(0.0f); 1874 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1875 cl.setAlpha(finalAlphaValue); 1876 cl.setRotationY(rotation); 1877 mUnshrinkAnimationListener.onAnimationEnd(null); 1878 } 1879 } 1880 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1881 boolean isLandscape = display.getWidth() > display.getHeight(); 1882 switch (mShrinkState) { 1883 // animating out 1884 case TOP: 1885 // customize 1886 if (animated) { 1887 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1888 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1889 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1890 } 1891 break; 1892 case MIDDLE: 1893 case SPRING_LOADED: 1894 if (animated) { 1895 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1896 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1897 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1898 } 1899 break; 1900 case BOTTOM_HIDDEN: 1901 case BOTTOM_VISIBLE: 1902 // all apps 1903 if (animated) { 1904 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1905 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1906 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1907 } 1908 break; 1909 } 1910 if (animated) { 1911 ValueAnimator animWithInterpolator = 1912 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1913 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1914 1915 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1916 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1917 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1918 final float newVerticalWallpaperOffset = 0.5f; 1919 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1920 public void onAnimationUpdate(ValueAnimator animation) { 1921 final float b = (Float) animation.getAnimatedValue(); 1922 final float a = 1f - b; 1923 if (b == 0f) { 1924 // an optimization, but not required 1925 return; 1926 } 1927 fastInvalidate(); 1928 setHorizontalWallpaperOffset( 1929 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1930 setVerticalWallpaperOffset( 1931 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1932 for (int i = 0; i < screenCount; i++) { 1933 final CellLayout cl = (CellLayout) getChildAt(i); 1934 cl.fastInvalidate(); 1935 cl.setFastTranslationX( 1936 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1937 cl.setFastTranslationY( 1938 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1939 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1940 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1941 cl.setFastBackgroundAlpha( 1942 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1943 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1944 b * newBackgroundAlphaMultipliers[i]); 1945 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1946 } 1947 } 1948 }); 1949 1950 ValueAnimator rotationAnim = 1951 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1952 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1953 rotationAnim.addUpdateListener(new AnimatorUpdateListener() { 1954 public void onAnimationUpdate(ValueAnimator animation) { 1955 // don't invalidate workspace because we did it above 1956 final float b = (Float) animation.getAnimatedValue(); 1957 final float a = 1f - b; 1958 if (b == 0f) { 1959 // an optimization, but not required 1960 return; 1961 } 1962 for (int i = 0; i < screenCount; i++) { 1963 final CellLayout cl = (CellLayout) getChildAt(i); 1964 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1965 } 1966 } 1967 }); 1968 1969 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1970 // If we call this when we're not animated, onAnimationEnd is never called on 1971 // the listener; make sure we only use the listener when we're actually animating 1972 mAnimator.addListener(mUnshrinkAnimationListener); 1973 mAnimator.start(); 1974 } else { 1975 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1976 setVerticalWallpaperOffset(0.5f); 1977 updateWallpaperOffsetImmediately(); 1978 } 1979 } 1980 1981 if (!springLoaded) { 1982 hideBackgroundGradient(); 1983 } 1984 } 1985 1986 /** 1987 * Draw the View v into the given Canvas. 1988 * 1989 * @param v the view to draw 1990 * @param destCanvas the canvas to draw on 1991 * @param padding the horizontal and vertical padding to use when drawing 1992 */ 1993 private void drawDragView(View v, Canvas destCanvas, int padding) { 1994 final Rect clipRect = mTempRect; 1995 v.getDrawingRect(clipRect); 1996 1997 // For a TextView, adjust the clip rect so that we don't include the text label 1998 if (v instanceof BubbleTextView) { 1999 final BubbleTextView tv = (BubbleTextView) v; 2000 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2001 tv.getLayout().getLineTop(0); 2002 } else if (v instanceof TextView) { 2003 final TextView tv = (TextView) v; 2004 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2005 tv.getLayout().getLineTop(0); 2006 } 2007 2008 // Draw the View into the bitmap. 2009 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2010 // they set scrollX and scrollY to large values to achieve centered text 2011 2012 destCanvas.save(); 2013 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2014 destCanvas.clipRect(clipRect, Op.REPLACE); 2015 v.draw(destCanvas); 2016 destCanvas.restore(); 2017 } 2018 2019 /** 2020 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2021 * Responsibility for the bitmap is transferred to the caller. 2022 */ 2023 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2024 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2025 final Bitmap b = Bitmap.createBitmap( 2026 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2027 2028 canvas.setBitmap(b); 2029 drawDragView(v, canvas, padding); 2030 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2031 return b; 2032 } 2033 2034 /** 2035 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2036 * Responsibility for the bitmap is transferred to the caller. 2037 */ 2038 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2039 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2040 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2041 canvas.setBitmap(b); 2042 2043 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2044 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2045 (h - padding) / (float) orig.getHeight()); 2046 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2047 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2048 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2049 2050 // center the image 2051 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2052 2053 Paint p = new Paint(); 2054 p.setFilterBitmap(true); 2055 canvas.drawBitmap(orig, src, dst, p); 2056 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2057 2058 return b; 2059 } 2060 2061 /** 2062 * Creates a drag outline to represent a drop (that we don't have the actual information for 2063 * yet). May be changed in the future to alter the drop outline slightly depending on the 2064 * clip description mime data. 2065 */ 2066 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2067 Resources r = getResources(); 2068 final int outlineColor = r.getColor(R.color.drag_outline_color); 2069 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2070 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2071 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2072 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2073 final Bitmap b = Bitmap.createBitmap( 2074 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2075 2076 canvas.setBitmap(b); 2077 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2078 rectRadius, rectRadius, mExternalDragOutlinePaint); 2079 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2080 return b; 2081 } 2082 2083 /** 2084 * Returns a new bitmap to show when the given View is being dragged around. 2085 * Responsibility for the bitmap is transferred to the caller. 2086 */ 2087 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2088 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2089 final Bitmap b = Bitmap.createBitmap( 2090 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2091 2092 canvas.setBitmap(b); 2093 canvas.drawBitmap(mDragOutline, 0, 0, null); 2094 drawDragView(v, canvas, padding); 2095 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2096 2097 return b; 2098 } 2099 2100 void startDrag(CellLayout.CellInfo cellInfo) { 2101 View child = cellInfo.cell; 2102 2103 // Make sure the drag was started by a long press as opposed to a long click. 2104 if (!child.isInTouchMode()) { 2105 return; 2106 } 2107 2108 mDragInfo = cellInfo; 2109 2110 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2111 current.onDragChild(child); 2112 2113 child.clearFocus(); 2114 child.setPressed(false); 2115 2116 final Canvas canvas = new Canvas(); 2117 2118 // We need to add extra padding to the bitmap to make room for the glow effect 2119 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2120 2121 // The outline is used to visualize where the item will land if dropped 2122 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2123 2124 // The drag bitmap follows the touch point around on the screen 2125 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2126 2127 final int bmpWidth = b.getWidth(); 2128 final int bmpHeight = b.getHeight(); 2129 child.getLocationOnScreen(mTempXY); 2130 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2131 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2132 mLauncher.lockScreenOrientation(); 2133 mDragController.startDrag( 2134 b, screenX, screenY, this, child.getTag(), DragController.DRAG_ACTION_MOVE); 2135 b.recycle(); 2136 } 2137 2138 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2139 boolean insertAtFirst, int intersectX, int intersectY) { 2140 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2141 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2142 2143 final int[] cellXY = new int[2]; 2144 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2145 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2146 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2147 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2148 cellXY[0], cellXY[1]); 2149 } 2150 2151 private void setPositionForDropAnimation( 2152 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2153 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2154 2155 // Based on the position of the drag view, find the top left of the original view 2156 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 2157 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 2158 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 2159 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 2160 2161 // Set its old pos (in the new parent's coordinates); it will be animated 2162 // in animateViewIntoPosition after the next layout pass 2163 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2164 lp.oldY = viewY - (parent.getTop() - mScrollY); 2165 } 2166 2167 /* 2168 * We should be careful that this method cannot result in any synchronous requestLayout() 2169 * calls, as it is called from onLayout(). 2170 */ 2171 public void animateViewIntoPosition(final View view) { 2172 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2173 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2174 2175 // Convert the animation params to be relative to the Workspace, not the CellLayout 2176 final int fromX = lp.oldX + parent.getLeft(); 2177 final int fromY = lp.oldY + parent.getTop(); 2178 2179 final int dx = lp.x - lp.oldX; 2180 final int dy = lp.y - lp.oldY; 2181 2182 // Calculate the duration of the animation based on the object's distance 2183 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2184 final Resources res = getResources(); 2185 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2186 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2187 if (dist < maxDist) { 2188 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2189 } 2190 2191 if (mDropAnim != null) { 2192 mDropAnim.end(); 2193 } 2194 mDropAnim = new ValueAnimator(); 2195 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2196 2197 // The view is invisible during the animation; we render it manually. 2198 mDropAnim.addListener(new AnimatorListenerAdapter() { 2199 public void onAnimationStart(Animator animation) { 2200 // Set this here so that we don't render it until the animation begins 2201 mDropView = view; 2202 } 2203 2204 public void onAnimationEnd(Animator animation) { 2205 if (mDropView != null) { 2206 mDropView.setVisibility(View.VISIBLE); 2207 mDropView = null; 2208 } 2209 } 2210 }); 2211 2212 mDropAnim.setDuration(duration); 2213 mDropAnim.setFloatValues(0.0f, 1.0f); 2214 mDropAnim.removeAllUpdateListeners(); 2215 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2216 public void onAnimationUpdate(ValueAnimator animation) { 2217 final float percent = (Float) animation.getAnimatedValue(); 2218 // Invalidate the old position 2219 invalidate(mDropViewPos[0], mDropViewPos[1], 2220 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2221 2222 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2223 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2224 invalidate(mDropViewPos[0], mDropViewPos[1], 2225 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2226 } 2227 }); 2228 2229 mDropAnim.start(); 2230 } 2231 2232 /** 2233 * {@inheritDoc} 2234 */ 2235 public boolean acceptDrop(DragSource source, int x, int y, 2236 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2237 2238 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2239 if (source != this) { 2240 // Don't accept the drop if we're not over a screen at time of drop 2241 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2242 return false; 2243 } 2244 2245 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2246 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2247 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2248 2249 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2250 2251 // Don't accept the drop if there's no room for the item 2252 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2253 mLauncher.showOutOfSpaceMessage(); 2254 return false; 2255 } 2256 } 2257 return true; 2258 } 2259 2260 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2261 DragView dragView, Object dragInfo) { 2262 boolean largeOrSpringLoaded = !mIsSmall || mWasSpringLoadedOnDragExit; 2263 int originX = largeOrSpringLoaded ? x - xOffset : x - xOffset + dragView.getWidth() / 2; 2264 int originY = largeOrSpringLoaded ? y - yOffset : y - yOffset + dragView.getHeight() / 2; 2265 2266 if (mIsSmall || mIsInUnshrinkAnimation) { 2267 // get originX and originY in the local coordinate system of the screen 2268 mTempOriginXY[0] = originX; 2269 mTempOriginXY[1] = originY; 2270 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 2271 originX = (int)mTempOriginXY[0]; 2272 originY = (int)mTempOriginXY[1]; 2273 if (!largeOrSpringLoaded) { 2274 originX -= mDragTargetLayout.getCellWidth() / 2; 2275 originY -= mDragTargetLayout.getCellHeight() / 2; 2276 } 2277 } 2278 2279 // When you are in customization mode and drag to a particular screen, make that the 2280 // new current/default screen, so any subsequent taps add items to that screen 2281 if (!mLauncher.isAllAppsVisible()) { 2282 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2283 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2284 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2285 } 2286 } 2287 2288 if (source != this) { 2289 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2290 // When the workspace is shrunk and the drop comes from customize, don't actually 2291 // add the item to the screen -- customize will do this itself 2292 return; 2293 } 2294 onDropExternal(new int[] { originX, originY }, dragInfo, mDragTargetLayout, false); 2295 } else if (mDragInfo != null) { 2296 final View cell = mDragInfo.cell; 2297 CellLayout dropTargetLayout = mDragTargetLayout; 2298 2299 // Handle the case where the user drops when in the scroll area. 2300 // This is treated as a drop on the adjacent page. 2301 if (dropTargetLayout == null && mInScrollArea) { 2302 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2303 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2304 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2305 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2306 } 2307 } 2308 2309 if (dropTargetLayout != null) { 2310 // Move internally 2311 mTargetCell = findNearestVacantArea(originX, originY, 2312 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 2313 mTargetCell); 2314 2315 final int screen = (mTargetCell == null) ? 2316 mDragInfo.screen : indexOfChild(dropTargetLayout); 2317 2318 if (screen != mCurrentPage) { 2319 snapToPage(screen); 2320 } 2321 2322 if (mTargetCell != null) { 2323 if (screen != mDragInfo.screen) { 2324 // Reparent the view 2325 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2326 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2327 mDragInfo.spanX, mDragInfo.spanY); 2328 } 2329 2330 // update the item's position after drop 2331 final ItemInfo info = (ItemInfo) cell.getTag(); 2332 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2333 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2334 lp.cellX = mTargetCell[0]; 2335 lp.cellY = mTargetCell[1]; 2336 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2337 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2338 2339 if (cell instanceof LauncherAppWidgetHostView) { 2340 final CellLayoutChildren children = dropTargetLayout.getChildrenLayout(); 2341 final CellLayout cellLayout = dropTargetLayout; 2342 // We post this call so that the widget has a chance to be placed 2343 // in its final location 2344 2345 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2346 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2347 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2348 post(new Runnable() { 2349 public void run() { 2350 children.addResizeFrame(info, hostView, 2351 cellLayout); 2352 } 2353 }); 2354 } 2355 } 2356 2357 LauncherModel.moveItemInDatabase(mLauncher, info, 2358 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2359 lp.cellX, lp.cellY); 2360 } 2361 } 2362 2363 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2364 2365 // Prepare it to be animated into its new position 2366 // This must be called after the view has been re-parented 2367 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 2368 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2369 parent.onDropChild(cell, animateDrop); 2370 } 2371 } 2372 2373 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2374 int yOffset, DragView dragView, Object dragInfo) { 2375 mDragTargetLayout = null; // Reset the drag state 2376 2377 if (!mIsSmall) { 2378 mDragTargetLayout = getCurrentDropLayout(); 2379 mDragTargetLayout.onDragEnter(); 2380 showOutlines(); 2381 } 2382 } 2383 2384 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2385 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2386 2387 if (mIsSmall || mIsInUnshrinkAnimation) { 2388 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2389 return null; 2390 } 2391 // We may need to delegate the drag to a child view. If a 1x1 item 2392 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2393 // then drag events should be handled by that child. 2394 2395 ItemInfo item = (ItemInfo) dragInfo; 2396 CellLayout currentLayout = getCurrentDropLayout(); 2397 2398 int dragPointX, dragPointY; 2399 if (item.spanX == 1 && item.spanY == 1) { 2400 // For a 1x1, calculate the drop cell exactly as in onDragOver 2401 dragPointX = x - xOffset; 2402 dragPointY = y - yOffset; 2403 } else { 2404 // Otherwise, use the exact drag coordinates 2405 dragPointX = x; 2406 dragPointY = y; 2407 } 2408 dragPointX += mScrollX - currentLayout.getLeft(); 2409 dragPointY += mScrollY - currentLayout.getTop(); 2410 2411 // If we are dragging over a cell that contains a DropTarget that will 2412 // accept the drop, delegate to that DropTarget. 2413 final int[] cellXY = mTempCell; 2414 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2415 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2416 if (child instanceof DropTarget) { 2417 DropTarget target = (DropTarget)child; 2418 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2419 return target; 2420 } 2421 } 2422 return null; 2423 } 2424 2425 /** 2426 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2427 * in the returned structure related to the widgets that match the drop (or a null list if it is 2428 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2429 */ 2430 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2431 final LauncherModel model = mLauncher.getModel(); 2432 final ClipDescription desc = event.getClipDescription(); 2433 final int mimeTypeCount = desc.getMimeTypeCount(); 2434 for (int i = 0; i < mimeTypeCount; ++i) { 2435 final String mimeType = desc.getMimeType(i); 2436 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2437 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2438 } else { 2439 final List<WidgetMimeTypeHandlerData> widgets = 2440 model.resolveWidgetsForMimeType(mContext, mimeType); 2441 if (widgets.size() > 0) { 2442 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2443 } 2444 } 2445 } 2446 return null; 2447 } 2448 2449 /** 2450 * Global drag and drop handler 2451 */ 2452 @Override 2453 public boolean onDragEvent(DragEvent event) { 2454 final ClipDescription desc = event.getClipDescription(); 2455 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2456 final int[] pos = new int[2]; 2457 layout.getLocationOnScreen(pos); 2458 // We need to offset the drag coordinates to layout coordinate space 2459 final int x = (int) event.getX() - pos[0]; 2460 final int y = (int) event.getY() - pos[1]; 2461 2462 switch (event.getAction()) { 2463 case DragEvent.ACTION_DRAG_STARTED: { 2464 // Validate this drag 2465 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2466 if (test != null) { 2467 boolean isShortcut = (test.second == null); 2468 if (isShortcut) { 2469 // Check if we have enough space on this screen to add a new shortcut 2470 if (!layout.findCellForSpan(pos, 1, 1)) { 2471 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2472 Toast.LENGTH_SHORT).show(); 2473 return false; 2474 } 2475 } 2476 } else { 2477 // Show error message if we couldn't accept any of the items 2478 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2479 Toast.LENGTH_SHORT).show(); 2480 return false; 2481 } 2482 2483 // Create the drag outline 2484 // We need to add extra padding to the bitmap to make room for the glow effect 2485 final Canvas canvas = new Canvas(); 2486 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2487 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2488 2489 // Show the current page outlines to indicate that we can accept this drop 2490 showOutlines(); 2491 layout.setIsDragOccuring(true); 2492 layout.onDragEnter(); 2493 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2494 2495 return true; 2496 } 2497 case DragEvent.ACTION_DRAG_LOCATION: 2498 // Visualize the drop location 2499 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2500 return true; 2501 case DragEvent.ACTION_DROP: { 2502 // Try and add any shortcuts 2503 final LauncherModel model = mLauncher.getModel(); 2504 final ClipData data = event.getClipData(); 2505 2506 // We assume that the mime types are ordered in descending importance of 2507 // representation. So we enumerate the list of mime types and alert the 2508 // user if any widgets can handle the drop. Only the most preferred 2509 // representation will be handled. 2510 pos[0] = x; 2511 pos[1] = y; 2512 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2513 if (test != null) { 2514 final int index = test.first; 2515 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2516 final boolean isShortcut = (widgets == null); 2517 final String mimeType = desc.getMimeType(index); 2518 if (isShortcut) { 2519 final Intent intent = data.getItemAt(index).getIntent(); 2520 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2521 onDropExternal(new int[] { x, y }, info, layout, false); 2522 } else { 2523 if (widgets.size() == 1) { 2524 // If there is only one item, then go ahead and add and configure 2525 // that widget 2526 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2527 final PendingAddWidgetInfo createInfo = 2528 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2529 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2530 } else { 2531 // Show the widget picker dialog if there is more than one widget 2532 // that can handle this data type 2533 final InstallWidgetReceiver.WidgetListAdapter adapter = 2534 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2535 data, widgets, layout, mCurrentPage, pos); 2536 final AlertDialog.Builder builder = 2537 new AlertDialog.Builder(mContext); 2538 builder.setAdapter(adapter, adapter); 2539 builder.setCancelable(true); 2540 builder.setTitle(mContext.getString( 2541 R.string.external_drop_widget_pick_title)); 2542 builder.setIcon(R.drawable.ic_no_applications); 2543 builder.show(); 2544 } 2545 } 2546 } 2547 return true; 2548 } 2549 case DragEvent.ACTION_DRAG_ENDED: 2550 // Hide the page outlines after the drop 2551 layout.setIsDragOccuring(false); 2552 layout.onDragExit(); 2553 hideOutlines(); 2554 return true; 2555 } 2556 return super.onDragEvent(event); 2557 } 2558 2559 /* 2560 * 2561 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2562 * coordinate space. The argument xy is modified with the return result. 2563 * 2564 */ 2565 void mapPointFromSelfToChild(View v, float[] xy) { 2566 mapPointFromSelfToChild(v, xy, null); 2567 } 2568 2569 /* 2570 * 2571 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2572 * coordinate space. The argument xy is modified with the return result. 2573 * 2574 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2575 * computing it itself; we use this to avoid redundant matrix inversions in 2576 * findMatchingPageForDragOver 2577 * 2578 */ 2579 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2580 if (cachedInverseMatrix == null) { 2581 v.getMatrix().invert(mTempInverseMatrix); 2582 cachedInverseMatrix = mTempInverseMatrix; 2583 } 2584 xy[0] = xy[0] + mScrollX - v.getLeft(); 2585 xy[1] = xy[1] + mScrollY - v.getTop(); 2586 cachedInverseMatrix.mapPoints(xy); 2587 } 2588 2589 /* 2590 * 2591 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2592 * the parent View's coordinate space. The argument xy is modified with the return result. 2593 * 2594 */ 2595 void mapPointFromChildToSelf(View v, float[] xy) { 2596 v.getMatrix().mapPoints(xy); 2597 xy[0] -= (mScrollX - v.getLeft()); 2598 xy[1] -= (mScrollY - v.getTop()); 2599 } 2600 2601 static private float squaredDistance(float[] point1, float[] point2) { 2602 float distanceX = point1[0] - point2[0]; 2603 float distanceY = point2[1] - point2[1]; 2604 return distanceX * distanceX + distanceY * distanceY; 2605 } 2606 2607 /* 2608 * 2609 * Returns true if the passed CellLayout cl overlaps with dragView 2610 * 2611 */ 2612 boolean overlaps(CellLayout cl, DragView dragView, 2613 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2614 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2615 final float[] draggedItemTopLeft = mTempDragCoordinates; 2616 draggedItemTopLeft[0] = dragViewX; 2617 draggedItemTopLeft[1] = dragViewY; 2618 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2619 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2620 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2621 2622 // Transform the dragged item's top left coordinates 2623 // to the CellLayout's local coordinates 2624 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2625 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2626 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2627 2628 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2629 // Transform the dragged item's bottom right coordinates 2630 // to the CellLayout's local coordinates 2631 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2632 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2633 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2634 2635 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2636 float overlap = (overlapRegionRight - overlapRegionLeft) * 2637 (overlapRegionBottom - overlapRegionTop); 2638 if (overlap > 0) { 2639 return true; 2640 } 2641 } 2642 } 2643 return false; 2644 } 2645 2646 /* 2647 * 2648 * This method returns the CellLayout that is currently being dragged to. In order to drag 2649 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2650 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2651 * 2652 * Return null if no CellLayout is currently being dragged over 2653 * 2654 */ 2655 private CellLayout findMatchingPageForDragOver( 2656 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2657 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2658 // with the item being dragged and then choose the one that's closest to the touch point 2659 final int screenCount = getChildCount(); 2660 CellLayout bestMatchingScreen = null; 2661 float smallestDistSoFar = Float.MAX_VALUE; 2662 2663 for (int i = 0; i < screenCount; i++) { 2664 CellLayout cl = (CellLayout)getChildAt(i); 2665 2666 final float[] touchXy = mTempTouchCoordinates; 2667 touchXy[0] = originX + offsetX; 2668 touchXy[1] = originY + offsetY; 2669 2670 // Transform the touch coordinates to the CellLayout's local coordinates 2671 // If the touch point is within the bounds of the cell layout, we can return immediately 2672 cl.getMatrix().invert(mTempInverseMatrix); 2673 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2674 2675 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2676 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2677 return cl; 2678 } 2679 2680 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2681 // Get the center of the cell layout in screen coordinates 2682 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2683 cellLayoutCenter[0] = cl.getWidth()/2; 2684 cellLayoutCenter[1] = cl.getHeight()/2; 2685 mapPointFromChildToSelf(cl, cellLayoutCenter); 2686 2687 touchXy[0] = originX + offsetX; 2688 touchXy[1] = originY + offsetY; 2689 2690 // Calculate the distance between the center of the CellLayout 2691 // and the touch point 2692 float dist = squaredDistance(touchXy, cellLayoutCenter); 2693 2694 if (dist < smallestDistSoFar) { 2695 smallestDistSoFar = dist; 2696 bestMatchingScreen = cl; 2697 } 2698 } 2699 } 2700 return bestMatchingScreen; 2701 } 2702 2703 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2704 DragView dragView, Object dragInfo) { 2705 // When touch is inside the scroll area, skip dragOver actions for the current screen 2706 if (!mInScrollArea) { 2707 CellLayout layout; 2708 int originX = x - xOffset; 2709 int originY = y - yOffset; 2710 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2711 if (shrunken) { 2712 mLastDragView = dragView; 2713 mLastDragOriginX = originX; 2714 mLastDragOriginY = originY; 2715 mLastDragXOffset = xOffset; 2716 mLastDragYOffset = yOffset; 2717 layout = findMatchingPageForDragOver(dragView, originX, originY, xOffset, yOffset); 2718 2719 if (layout != mDragTargetLayout) { 2720 if (mDragTargetLayout != null) { 2721 mDragTargetLayout.setIsDragOverlapping(false); 2722 mSpringLoadedDragController.onDragExit(); 2723 } 2724 mDragTargetLayout = layout; 2725 // In spring-loaded mode, we still want the user to be able to hover over a 2726 // full screen (which is traditionally set to not accept drops) if they want to 2727 // get to pages beyond the screen that is full. 2728 boolean allowDragOver = (mDragTargetLayout != null) && 2729 (mDragTargetLayout.getAcceptsDrops() || 2730 (mShrinkState == ShrinkState.SPRING_LOADED)); 2731 if (allowDragOver) { 2732 mDragTargetLayout.setIsDragOverlapping(true); 2733 mSpringLoadedDragController.onDragEnter( 2734 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2735 } 2736 } 2737 } else { 2738 layout = getCurrentDropLayout(); 2739 if (layout != mDragTargetLayout) { 2740 if (mDragTargetLayout != null) { 2741 mDragTargetLayout.onDragExit(); 2742 } 2743 layout.onDragEnter(); 2744 mDragTargetLayout = layout; 2745 } 2746 } 2747 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2748 layout = getCurrentDropLayout(); 2749 2750 final ItemInfo item = (ItemInfo)dragInfo; 2751 if (dragInfo instanceof LauncherAppWidgetInfo) { 2752 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2753 2754 if (widgetInfo.spanX == -1) { 2755 // Calculate the grid spans needed to fit this widget 2756 int[] spans = layout.rectToCell( 2757 widgetInfo.minWidth, widgetInfo.minHeight, null); 2758 item.spanX = spans[0]; 2759 item.spanY = spans[1]; 2760 } 2761 } 2762 2763 if (source instanceof AllAppsPagedView) { 2764 // This is a hack to fix the point used to determine which cell an icon from 2765 // the all apps screen is over 2766 if (item != null && item.spanX == 1 && layout != null) { 2767 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2768 2769 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2770 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2771 dragView.setDragRegion(dragView.getDragRegionLeft(), 2772 dragView.getDragRegionTop(), 2773 layout.getCellWidth(), 2774 dragView.getDragRegionHeight()); 2775 } 2776 } 2777 } else if (source == this) { 2778 // When dragging from the workspace, the drag view is slightly bigger than 2779 // the original view, and offset vertically. Adjust to account for this. 2780 final View origView = mDragInfo.cell; 2781 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2782 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2783 + dragView.getOffsetY(); 2784 } 2785 2786 if (mDragTargetLayout != null) { 2787 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2788 float[] localOrigin = { originX, originY }; 2789 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2790 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2791 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2792 } 2793 } 2794 } 2795 } 2796 2797 private void doDragExit() { 2798 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2799 if (mDragTargetLayout != null) { 2800 mDragTargetLayout.onDragExit(); 2801 } 2802 if (!mIsPageMoving) { 2803 hideOutlines(); 2804 } 2805 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2806 mLauncher.exitSpringLoadedDragMode(); 2807 } 2808 clearAllHovers(); 2809 } 2810 2811 public void onDragExit(DragSource source, int x, int y, int xOffset, 2812 int yOffset, DragView dragView, Object dragInfo) { 2813 doDragExit(); 2814 } 2815 2816 @Override 2817 public void getHitRect(Rect outRect) { 2818 // We want the workspace to have the whole area of the display (it will find the correct 2819 // cell layout to drop to in the existing drag/drop logic. 2820 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2821 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2822 } 2823 2824 /** 2825 * Add the item specified by dragInfo to the given layout. 2826 * @return true if successful 2827 */ 2828 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2829 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2830 onDropExternal(null, (ItemInfo) dragInfo, (CellLayout) layout, false); 2831 return true; 2832 } 2833 mLauncher.showOutOfSpaceMessage(); 2834 return false; 2835 } 2836 2837 /** 2838 * Drop an item that didn't originate on one of the workspace screens. 2839 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2840 * come from another app altogether. 2841 * 2842 * NOTE: This can also be called when we are outside of a drag event, when we want 2843 * to add an item to one of the workspace screens. 2844 */ 2845 private void onDropExternal(int[] touchXY, Object dragInfo, 2846 CellLayout cellLayout, boolean insertAtFirst) { 2847 int screen = indexOfChild(cellLayout); 2848 if (dragInfo instanceof PendingAddItemInfo) { 2849 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2850 // When dragging and dropping from customization tray, we deal with creating 2851 // widgets/shortcuts/folders in a slightly different way 2852 switch (info.itemType) { 2853 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2854 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2855 break; 2856 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2857 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2858 break; 2859 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2860 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2861 break; 2862 default: 2863 throw new IllegalStateException("Unknown item type: " + info.itemType); 2864 } 2865 cellLayout.onDragExit(); 2866 } else { 2867 // This is for other drag/drop cases, like dragging from All Apps 2868 ItemInfo info = (ItemInfo) dragInfo; 2869 View view = null; 2870 2871 switch (info.itemType) { 2872 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2873 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2874 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2875 // Came from all apps -- make a copy 2876 info = new ShortcutInfo((ApplicationInfo) info); 2877 } 2878 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2879 (ShortcutInfo) info); 2880 break; 2881 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2882 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2883 cellLayout, (UserFolderInfo) info, mIconCache); 2884 break; 2885 default: 2886 throw new IllegalStateException("Unknown item type: " + info.itemType); 2887 } 2888 2889 mTargetCell = new int[2]; 2890 if (touchXY != null) { 2891 // when dragging and dropping, just find the closest free spot 2892 cellLayout.findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, mTargetCell); 2893 } else { 2894 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2895 } 2896 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2897 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2898 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2899 cellLayout.onDropChild(view, animateDrop); 2900 cellLayout.animateDrop(); 2901 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2902 2903 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2904 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2905 lp.cellX, lp.cellY); 2906 } 2907 } 2908 2909 /** 2910 * Return the current {@link CellLayout}, correctly picking the destination 2911 * screen while a scroll is in progress. 2912 */ 2913 public CellLayout getCurrentDropLayout() { 2914 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2915 } 2916 2917 /** 2918 * Return the current CellInfo describing our current drag; this method exists 2919 * so that Launcher can sync this object with the correct info when the activity is created/ 2920 * destroyed 2921 * 2922 */ 2923 public CellLayout.CellInfo getDragInfo() { 2924 return mDragInfo; 2925 } 2926 2927 /** 2928 * Calculate the nearest cell where the given object would be dropped. 2929 */ 2930 private int[] findNearestVacantArea(int pixelX, int pixelY, 2931 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2932 2933 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2934 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2935 2936 // Find the best target drop location 2937 return layout.findNearestVacantArea( 2938 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2939 } 2940 2941 void setLauncher(Launcher launcher) { 2942 mLauncher = launcher; 2943 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2944 2945 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2946 if (mCustomizationDrawer != null) { 2947 mCustomizationDrawerContent = 2948 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2949 } 2950 } 2951 2952 public void setDragController(DragController dragController) { 2953 mDragController = dragController; 2954 } 2955 2956 /** 2957 * Called at the end of a drag which originated on the workspace. 2958 */ 2959 public void onDropCompleted(View target, Object dragInfo, boolean success) { 2960 if (success) { 2961 if (target != this && mDragInfo != null) { 2962 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2963 cellLayout.removeView(mDragInfo.cell); 2964 if (mDragInfo.cell instanceof DropTarget) { 2965 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2966 } 2967 // final Object tag = mDragInfo.cell.getTag(); 2968 } 2969 } else if (mDragInfo != null) { 2970 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2971 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2972 // moved into DragController.cancelDrag(). 2973 doDragExit(); 2974 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 2975 } 2976 mLauncher.unlockScreenOrientation(); 2977 mDragOutline = null; 2978 mDragInfo = null; 2979 } 2980 2981 @Override 2982 public void onDragViewVisible() { 2983 ((View) mDragInfo.cell).setVisibility(View.GONE); 2984 } 2985 2986 public boolean isDropEnabled() { 2987 return true; 2988 } 2989 2990 @Override 2991 protected void onRestoreInstanceState(Parcelable state) { 2992 super.onRestoreInstanceState(state); 2993 Launcher.setScreen(mCurrentPage); 2994 } 2995 2996 @Override 2997 public void scrollLeft() { 2998 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2999 super.scrollLeft(); 3000 } 3001 } 3002 3003 @Override 3004 public void scrollRight() { 3005 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3006 super.scrollRight(); 3007 } 3008 } 3009 3010 @Override 3011 public void onEnterScrollArea(int direction) { 3012 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3013 mInScrollArea = true; 3014 mPendingScrollDirection = direction; 3015 3016 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3017 final CellLayout layout = (CellLayout) getChildAt(page); 3018 3019 if (layout != null) { 3020 layout.setIsDragOverlapping(true); 3021 3022 if (mDragTargetLayout != null) { 3023 mDragTargetLayout.onDragExit(); 3024 mDragTargetLayout = null; 3025 } 3026 // In portrait, need to redraw the edge glow when entering the scroll area 3027 if (getHeight() > getWidth()) { 3028 invalidate(); 3029 } 3030 } 3031 } 3032 } 3033 3034 private void clearAllHovers() { 3035 final int childCount = getChildCount(); 3036 for (int i = 0; i < childCount; i++) { 3037 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3038 } 3039 mSpringLoadedDragController.onDragExit(); 3040 3041 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3042 // so we need to redraw the workspace when this may have changed. 3043 if (getHeight() > getWidth()) { 3044 invalidate(); 3045 } 3046 } 3047 3048 @Override 3049 public void onExitScrollArea() { 3050 if (mInScrollArea) { 3051 mInScrollArea = false; 3052 mPendingScrollDirection = DragController.SCROLL_NONE; 3053 clearAllHovers(); 3054 } 3055 } 3056 3057 public Folder getFolderForTag(Object tag) { 3058 final int screenCount = getChildCount(); 3059 for (int screen = 0; screen < screenCount; screen++) { 3060 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3061 int count = currentScreen.getChildCount(); 3062 for (int i = 0; i < count; i++) { 3063 View child = currentScreen.getChildAt(i); 3064 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3065 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3066 Folder f = (Folder) child; 3067 if (f.getInfo() == tag && f.getInfo().opened) { 3068 return f; 3069 } 3070 } 3071 } 3072 } 3073 return null; 3074 } 3075 3076 public View getViewForTag(Object tag) { 3077 int screenCount = getChildCount(); 3078 for (int screen = 0; screen < screenCount; screen++) { 3079 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3080 int count = currentScreen.getChildCount(); 3081 for (int i = 0; i < count; i++) { 3082 View child = currentScreen.getChildAt(i); 3083 if (child.getTag() == tag) { 3084 return child; 3085 } 3086 } 3087 } 3088 return null; 3089 } 3090 3091 3092 void removeItems(final ArrayList<ApplicationInfo> apps) { 3093 final int screenCount = getChildCount(); 3094 final PackageManager manager = getContext().getPackageManager(); 3095 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3096 3097 final HashSet<String> packageNames = new HashSet<String>(); 3098 final int appCount = apps.size(); 3099 for (int i = 0; i < appCount; i++) { 3100 packageNames.add(apps.get(i).componentName.getPackageName()); 3101 } 3102 3103 for (int i = 0; i < screenCount; i++) { 3104 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3105 final ViewGroup layout = layoutParent.getChildrenLayout(); 3106 3107 // Avoid ANRs by treating each screen separately 3108 post(new Runnable() { 3109 public void run() { 3110 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3111 childrenToRemove.clear(); 3112 3113 int childCount = layout.getChildCount(); 3114 for (int j = 0; j < childCount; j++) { 3115 final View view = layout.getChildAt(j); 3116 Object tag = view.getTag(); 3117 3118 if (tag instanceof ShortcutInfo) { 3119 final ShortcutInfo info = (ShortcutInfo) tag; 3120 final Intent intent = info.intent; 3121 final ComponentName name = intent.getComponent(); 3122 3123 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3124 for (String packageName: packageNames) { 3125 if (packageName.equals(name.getPackageName())) { 3126 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3127 childrenToRemove.add(view); 3128 } 3129 } 3130 } 3131 } else if (tag instanceof UserFolderInfo) { 3132 final UserFolderInfo info = (UserFolderInfo) tag; 3133 final ArrayList<ShortcutInfo> contents = info.contents; 3134 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3135 final int contentsCount = contents.size(); 3136 boolean removedFromFolder = false; 3137 3138 for (int k = 0; k < contentsCount; k++) { 3139 final ShortcutInfo appInfo = contents.get(k); 3140 final Intent intent = appInfo.intent; 3141 final ComponentName name = intent.getComponent(); 3142 3143 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3144 for (String packageName: packageNames) { 3145 if (packageName.equals(name.getPackageName())) { 3146 toRemove.add(appInfo); 3147 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3148 removedFromFolder = true; 3149 } 3150 } 3151 } 3152 } 3153 3154 contents.removeAll(toRemove); 3155 if (removedFromFolder) { 3156 final Folder folder = getOpenFolder(); 3157 if (folder != null) 3158 folder.notifyDataSetChanged(); 3159 } 3160 } else if (tag instanceof LiveFolderInfo) { 3161 final LiveFolderInfo info = (LiveFolderInfo) tag; 3162 final Uri uri = info.uri; 3163 final ProviderInfo providerInfo = manager.resolveContentProvider( 3164 uri.getAuthority(), 0); 3165 3166 if (providerInfo != null) { 3167 for (String packageName: packageNames) { 3168 if (packageName.equals(providerInfo.packageName)) { 3169 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3170 childrenToRemove.add(view); 3171 } 3172 } 3173 } 3174 } else if (tag instanceof LauncherAppWidgetInfo) { 3175 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3176 final AppWidgetProviderInfo provider = 3177 widgets.getAppWidgetInfo(info.appWidgetId); 3178 if (provider != null) { 3179 for (String packageName: packageNames) { 3180 if (packageName.equals(provider.provider.getPackageName())) { 3181 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3182 childrenToRemove.add(view); 3183 } 3184 } 3185 } 3186 } 3187 } 3188 3189 childCount = childrenToRemove.size(); 3190 for (int j = 0; j < childCount; j++) { 3191 View child = childrenToRemove.get(j); 3192 // Note: We can not remove the view directly from CellLayoutChildren as this 3193 // does not re-mark the spaces as unoccupied. 3194 layoutParent.removeViewInLayout(child); 3195 if (child instanceof DropTarget) { 3196 mDragController.removeDropTarget((DropTarget)child); 3197 } 3198 } 3199 3200 if (childCount > 0) { 3201 layout.requestLayout(); 3202 layout.invalidate(); 3203 } 3204 } 3205 }); 3206 } 3207 } 3208 3209 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3210 final int screenCount = getChildCount(); 3211 for (int i = 0; i < screenCount; i++) { 3212 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3213 int childCount = layout.getChildCount(); 3214 for (int j = 0; j < childCount; j++) { 3215 final View view = layout.getChildAt(j); 3216 Object tag = view.getTag(); 3217 if (tag instanceof ShortcutInfo) { 3218 ShortcutInfo info = (ShortcutInfo)tag; 3219 // We need to check for ACTION_MAIN otherwise getComponent() might 3220 // return null for some shortcuts (for instance, for shortcuts to 3221 // web pages.) 3222 final Intent intent = info.intent; 3223 final ComponentName name = intent.getComponent(); 3224 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3225 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3226 final int appCount = apps.size(); 3227 for (int k = 0; k < appCount; k++) { 3228 ApplicationInfo app = apps.get(k); 3229 if (app.componentName.equals(name)) { 3230 info.setIcon(mIconCache.getIcon(info.intent)); 3231 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3232 new FastBitmapDrawable(info.getIcon(mIconCache)), 3233 null, null); 3234 } 3235 } 3236 } 3237 } 3238 } 3239 } 3240 } 3241 3242 void moveToDefaultScreen(boolean animate) { 3243 if (mIsSmall || mIsInUnshrinkAnimation) { 3244 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3245 } else if (animate) { 3246 snapToPage(mDefaultPage); 3247 } else { 3248 setCurrentPage(mDefaultPage); 3249 } 3250 getChildAt(mDefaultPage).requestFocus(); 3251 } 3252 3253 void setIndicators(Drawable previous, Drawable next) { 3254 mPreviousIndicator = previous; 3255 mNextIndicator = next; 3256 previous.setLevel(mCurrentPage); 3257 next.setLevel(mCurrentPage); 3258 } 3259 3260 @Override 3261 public void syncPages() { 3262 } 3263 3264 @Override 3265 public void syncPageItems(int page) { 3266 } 3267 3268} 3269