Workspace.java revision f7640c8bba304ba99c99afcd7393893eccc9a0d9
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 @SuppressWarnings({"UnusedDeclaration"}) 81 private static final String TAG = "Launcher.Workspace"; 82 83 // This is how much the workspace shrinks when we enter all apps or 84 // customization mode 85 private static final float SHRINK_FACTOR = 0.16f; 86 87 // How much the screens shrink when we enter spring loaded drag mode 88 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 89 90 // Y rotation to apply to the workspace screens 91 private static final float WORKSPACE_ROTATION = 12.5f; 92 93 // These are extra scale factors to apply to the mini home screens 94 // so as to achieve the desired transform 95 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 96 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 97 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 98 99 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 100 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 101 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 102 103 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 104 private static final int BACKGROUND_FADE_IN_DURATION = 350; 105 106 // These animators are used to fade the children's outlines 107 private ObjectAnimator mChildrenOutlineFadeInAnimation; 108 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 109 private float mChildrenOutlineAlpha = 0; 110 111 // These properties refer to the background protection gradient used for AllApps and Customize 112 private ValueAnimator mBackgroundFadeInAnimation; 113 private ValueAnimator mBackgroundFadeOutAnimation; 114 private Drawable mBackground; 115 private Drawable mCustomizeTrayBackground; 116 private boolean mDrawCustomizeTrayBackground; 117 private float mBackgroundAlpha = 0; 118 private float mOverScrollMaxBackgroundAlpha = 0.0f; 119 private int mOverScrollPageIndex = -1; 120 121 private View mCustomizationDrawer; 122 private View mCustomizationDrawerContent; 123 private int[] mCustomizationDrawerPos = new int[2]; 124 private float[] mCustomizationDrawerTransformedPos = new float[2]; 125 126 private final WallpaperManager mWallpaperManager; 127 128 private int mDefaultPage; 129 130 private boolean mIsDragInProcess = false; 131 132 /** 133 * CellInfo for the cell that is currently being dragged 134 */ 135 private CellLayout.CellInfo mDragInfo; 136 137 /** 138 * Target drop area calculated during last acceptDrop call. 139 */ 140 private int[] mTargetCell = null; 141 142 /** 143 * The CellLayout that is currently being dragged over 144 */ 145 private CellLayout mDragTargetLayout = null; 146 147 private Launcher mLauncher; 148 private IconCache mIconCache; 149 private DragController mDragController; 150 151 // These are temporary variables to prevent having to allocate a new object just to 152 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 153 private int[] mTempCell = new int[2]; 154 private int[] mTempEstimate = new int[2]; 155 private float[] mTempOriginXY = new float[2]; 156 private float[] mTempDragCoordinates = new float[2]; 157 private float[] mTempTouchCoordinates = new float[2]; 158 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 159 private float[] mTempDragBottomRightCoordinates = new float[2]; 160 private Matrix mTempInverseMatrix = new Matrix(); 161 162 private SpringLoadedDragController mSpringLoadedDragController; 163 164 private static final int DEFAULT_CELL_COUNT_X = 4; 165 private static final int DEFAULT_CELL_COUNT_Y = 4; 166 167 private Drawable mPreviousIndicator; 168 private Drawable mNextIndicator; 169 170 // State variable that indicates whether the pages are small (ie when you're 171 // in all apps or customize mode) 172 private boolean mIsSmall = false; 173 private boolean mIsInUnshrinkAnimation = false; 174 private AnimatorListener mShrinkAnimationListener; 175 private AnimatorListener mUnshrinkAnimationListener; 176 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 177 private ShrinkState mShrinkState; 178 private boolean mWasSpringLoadedOnDragExit = false; 179 private boolean mWaitingToShrink = false; 180 private ShrinkState mWaitingToShrinkState; 181 private AnimatorSet mAnimator; 182 183 /** Is the user is dragging an item near the edge of a page? */ 184 private boolean mInScrollArea = false; 185 186 /** If mInScrollArea is true, the direction of the scroll. */ 187 private int mPendingScrollDirection = DragController.SCROLL_NONE; 188 189 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 190 private Bitmap mDragOutline = null; 191 private final Rect mTempRect = new Rect(); 192 private final int[] mTempXY = new int[2]; 193 194 private ValueAnimator mDropAnim = null; 195 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 196 private View mDropView = null; 197 private int[] mDropViewPos = new int[] { -1, -1 }; 198 199 // Paint used to draw external drop outline 200 private final Paint mExternalDragOutlinePaint = new Paint(); 201 202 // Camera and Matrix used to determine the final position of a neighboring CellLayout 203 private final Matrix mMatrix = new Matrix(); 204 private final Camera mCamera = new Camera(); 205 private final float mTempFloat2[] = new float[2]; 206 207 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 208 int mWallpaperWidth; 209 int mWallpaperHeight; 210 WallpaperOffsetInterpolator mWallpaperOffset; 211 boolean mUpdateWallpaperOffsetImmediately = false; 212 boolean mSyncWallpaperOffsetWithScroll = true; 213 214 // info about the last drag 215 private DragView mLastDragView; 216 private int mLastDragOriginX; 217 private int mLastDragOriginY; 218 private int mLastDragXOffset; 219 private int mLastDragYOffset; 220 221 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 222 private float mXDown; 223 private float mYDown; 224 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 225 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 226 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 227 228 /** 229 * Used to inflate the Workspace from XML. 230 * 231 * @param context The application's context. 232 * @param attrs The attributes set containing the Workspace's customization values. 233 */ 234 public Workspace(Context context, AttributeSet attrs) { 235 this(context, attrs, 0); 236 } 237 238 /** 239 * Used to inflate the Workspace from XML. 240 * 241 * @param context The application's context. 242 * @param attrs The attributes set containing the Workspace's customization values. 243 * @param defStyle Unused. 244 */ 245 public Workspace(Context context, AttributeSet attrs, int defStyle) { 246 super(context, attrs, defStyle); 247 mContentIsRefreshable = false; 248 249 if (!LauncherApplication.isScreenXLarge()) { 250 mFadeInAdjacentScreens = false; 251 } 252 253 mWallpaperManager = WallpaperManager.getInstance(context); 254 255 TypedArray a = context.obtainStyledAttributes(attrs, 256 R.styleable.Workspace, defStyle, 0); 257 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 258 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 259 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 260 a.recycle(); 261 262 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 263 setHapticFeedbackEnabled(false); 264 265 initWorkspace(); 266 267 // Disable multitouch across the workspace/all apps/customize tray 268 setMotionEventSplittingEnabled(true); 269 } 270 271 /** 272 * Initializes various states for this workspace. 273 */ 274 protected void initWorkspace() { 275 Context context = getContext(); 276 mCurrentPage = mDefaultPage; 277 Launcher.setScreen(mCurrentPage); 278 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 279 mIconCache = app.getIconCache(); 280 mExternalDragOutlinePaint.setAntiAlias(true); 281 setWillNotDraw(false); 282 283 try { 284 final Resources res = getResources(); 285 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 286 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 287 } catch (Resources.NotFoundException e) { 288 // In this case, we will skip drawing background protection 289 } 290 291 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 292 @Override 293 public void onAnimationStart(Animator animation) { 294 mIsInUnshrinkAnimation = true; 295 } 296 297 @Override 298 public void onAnimationEnd(Animator animation) { 299 mIsInUnshrinkAnimation = false; 300 mSyncWallpaperOffsetWithScroll = true; 301 if (mShrinkState == ShrinkState.SPRING_LOADED) { 302 View layout = null; 303 if (mLastDragView != null) { 304 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 305 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 306 } 307 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 308 } else { 309 mDrawCustomizeTrayBackground = false; 310 } 311 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 312 mAnimator = null; 313 enableChildrenLayers(false); 314 } 315 }; 316 mShrinkAnimationListener = new AnimatorListenerAdapter() { 317 @Override 318 public void onAnimationStart(Animator animation) { 319 enableChildrenLayers(true); 320 } 321 @Override 322 public void onAnimationEnd(Animator animation) { 323 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 324 mAnimator = null; 325 } 326 }; 327 mSnapVelocity = 600; 328 mWallpaperOffset = new WallpaperOffsetInterpolator(); 329 } 330 331 @Override 332 protected int getScrollMode() { 333 if (LauncherApplication.isScreenXLarge()) { 334 return SmoothPagedView.X_LARGE_MODE; 335 } else { 336 return SmoothPagedView.DEFAULT_MODE; 337 } 338 } 339 340 @Override 341 public void addView(View child, int index, LayoutParams params) { 342 if (!(child instanceof CellLayout)) { 343 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 344 } 345 ((CellLayout) child).setOnInterceptTouchListener(this); 346 super.addView(child, index, params); 347 } 348 349 @Override 350 public void addView(View child) { 351 if (!(child instanceof CellLayout)) { 352 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 353 } 354 ((CellLayout) child).setOnInterceptTouchListener(this); 355 super.addView(child); 356 } 357 358 @Override 359 public void addView(View child, int index) { 360 if (!(child instanceof CellLayout)) { 361 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 362 } 363 ((CellLayout) child).setOnInterceptTouchListener(this); 364 super.addView(child, index); 365 } 366 367 @Override 368 public void addView(View child, int width, int height) { 369 if (!(child instanceof CellLayout)) { 370 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 371 } 372 ((CellLayout) child).setOnInterceptTouchListener(this); 373 super.addView(child, width, height); 374 } 375 376 @Override 377 public void addView(View child, LayoutParams params) { 378 if (!(child instanceof CellLayout)) { 379 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 380 } 381 ((CellLayout) child).setOnInterceptTouchListener(this); 382 super.addView(child, params); 383 } 384 385 /** 386 * @return The open folder on the current screen, or null if there is none 387 */ 388 Folder getOpenFolder() { 389 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 390 int count = currentPage.getChildCount(); 391 for (int i = 0; i < count; i++) { 392 View child = currentPage.getChildAt(i); 393 if (child instanceof Folder) { 394 Folder folder = (Folder) child; 395 if (folder.getInfo().opened) 396 return folder; 397 } 398 } 399 return null; 400 } 401 402 ArrayList<Folder> getOpenFolders() { 403 final int screenCount = getChildCount(); 404 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 405 406 for (int screen = 0; screen < screenCount; screen++) { 407 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 408 int count = currentPage.getChildCount(); 409 for (int i = 0; i < count; i++) { 410 View child = currentPage.getChildAt(i); 411 if (child instanceof Folder) { 412 Folder folder = (Folder) child; 413 if (folder.getInfo().opened) 414 folders.add(folder); 415 break; 416 } 417 } 418 } 419 return folders; 420 } 421 422 boolean isTouchActive() { 423 return mTouchState != TOUCH_STATE_REST; 424 } 425 426 /** 427 * Adds the specified child in the specified screen. The position and dimension of 428 * the child are defined by x, y, spanX and spanY. 429 * 430 * @param child The child to add in one of the workspace's screens. 431 * @param screen The screen in which to add the child. 432 * @param x The X position of the child in the screen's grid. 433 * @param y The Y position of the child in the screen's grid. 434 * @param spanX The number of cells spanned horizontally by the child. 435 * @param spanY The number of cells spanned vertically by the child. 436 */ 437 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 438 addInScreen(child, screen, x, y, spanX, spanY, false); 439 } 440 441 void addInFullScreen(View child, int screen) { 442 addInScreen(child, screen, 0, 0, -1, -1); 443 } 444 445 /** 446 * Adds the specified child in the specified screen. The position and dimension of 447 * the child are defined by x, y, spanX and spanY. 448 * 449 * @param child The child to add in one of the workspace's screens. 450 * @param screen The screen in which to add the child. 451 * @param x The X position of the child in the screen's grid. 452 * @param y The Y position of the child in the screen's grid. 453 * @param spanX The number of cells spanned horizontally by the child. 454 * @param spanY The number of cells spanned vertically by the child. 455 * @param insert When true, the child is inserted at the beginning of the children list. 456 */ 457 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 458 if (screen < 0 || screen >= getChildCount()) { 459 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 460 + " (was " + screen + "); skipping child"); 461 return; 462 } 463 464 final CellLayout group = (CellLayout) getChildAt(screen); 465 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 466 if (lp == null) { 467 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 468 } else { 469 lp.cellX = x; 470 lp.cellY = y; 471 lp.cellHSpan = spanX; 472 lp.cellVSpan = spanY; 473 } 474 475 // Get the canonical child id to uniquely represent this view in this screen 476 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 477 boolean markCellsAsOccupied = !(child instanceof Folder); 478 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 479 // TODO: This branch occurs when the workspace is adding views 480 // outside of the defined grid 481 // maybe we should be deleting these items from the LauncherModel? 482 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 483 } 484 485 if (!(child instanceof Folder)) { 486 child.setHapticFeedbackEnabled(false); 487 child.setOnLongClickListener(mLongClickListener); 488 } 489 if (child instanceof DropTarget) { 490 mDragController.addDropTarget((DropTarget) child); 491 } 492 } 493 494 /** 495 * Check if the point (x, y) hits a given page. 496 */ 497 private boolean hitsPage(int index, float x, float y) { 498 final View page = getChildAt(index); 499 if (page != null) { 500 float[] localXY = { x, y }; 501 mapPointFromSelfToChild(page, localXY); 502 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 503 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 504 } 505 return false; 506 } 507 508 @Override 509 protected boolean hitsPreviousPage(float x, float y) { 510 // mNextPage is set to INVALID_PAGE whenever we are stationary. 511 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 512 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 513 return hitsPage(current - 1, x, y); 514 } 515 516 @Override 517 protected boolean hitsNextPage(float x, float y) { 518 // mNextPage is set to INVALID_PAGE whenever we are stationary. 519 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 520 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 521 return hitsPage(current + 1, x, y); 522 } 523 524 public boolean onTouch(View v, MotionEvent event) { 525 // this is an intercepted event being forwarded from a cell layout 526 if (mIsSmall || mIsInUnshrinkAnimation) { 527 // Only allow clicks on a CellLayout if it is visible 528 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 529 mLauncher.onWorkspaceClick((CellLayout) v); 530 } 531 return true; 532 } 533 return false; 534 } 535 536 protected void onWindowVisibilityChanged (int visibility) { 537 mLauncher.onWindowVisibilityChanged(visibility); 538 } 539 540 @Override 541 public boolean dispatchUnhandledMove(View focused, int direction) { 542 if (mIsSmall || mIsInUnshrinkAnimation) { 543 // when the home screens are shrunken, shouldn't allow side-scrolling 544 return false; 545 } 546 return super.dispatchUnhandledMove(focused, direction); 547 } 548 549 @Override 550 public boolean onInterceptTouchEvent(MotionEvent ev) { 551 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 552 mXDown = ev.getX(); 553 mYDown = ev.getY(); 554 } 555 556 if (mIsSmall || mIsInUnshrinkAnimation) { 557 if (mLauncher.isAllAppsVisible() && 558 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 559 // Intercept this event so we can show the workspace in full view 560 // when it is clicked on and it is small 561 AllAppsPagedView allApps = (AllAppsPagedView) 562 mLauncher.findViewById(R.id.all_apps_paged_view); 563 if (allApps != null) { 564 allApps.onInterceptTouchEvent(ev); 565 } 566 return true; 567 } 568 return false; 569 } 570 return super.onInterceptTouchEvent(ev); 571 } 572 573 @Override 574 protected void determineScrollingStart(MotionEvent ev) { 575 if (!mIsSmall && !mIsInUnshrinkAnimation) { 576 float deltaX = Math.abs(ev.getX() - mXDown); 577 float deltaY = Math.abs(ev.getY() - mYDown); 578 579 if (Float.compare(deltaX, 0f) == 0) return; 580 581 float slope = deltaY / deltaX; 582 float theta = (float) Math.atan(slope); 583 584 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 585 cancelCurrentPageLongPress(); 586 } 587 588 if (theta > MAX_SWIPE_ANGLE) { 589 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 590 return; 591 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 592 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 593 // increase the touch slop to make it harder to begin scrolling the workspace. This 594 // results in vertically scrolling widgets to more easily. The higher the angle, the 595 // more we increase touch slop. 596 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 597 float extraRatio = (float) 598 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 599 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 600 } else { 601 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 602 super.determineScrollingStart(ev); 603 } 604 } 605 } 606 607 protected void onPageBeginMoving() { 608 if (mNextPage != INVALID_PAGE) { 609 // we're snapping to a particular screen 610 enableChildrenCache(mCurrentPage, mNextPage); 611 } else { 612 // this is when user is actively dragging a particular screen, they might 613 // swipe it either left or right (but we won't advance by more than one screen) 614 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 615 } 616 showOutlines(); 617 } 618 619 protected void onPageEndMoving() { 620 clearChildrenCache(); 621 // Hide the outlines, as long as we're not dragging 622 if (!mDragController.dragging()) { 623 hideOutlines(); 624 } 625 mOverScrollMaxBackgroundAlpha = 0.0f; 626 mOverScrollPageIndex = -1; 627 } 628 629 @Override 630 protected void notifyPageSwitchListener() { 631 super.notifyPageSwitchListener(); 632 633 if (mPreviousIndicator != null) { 634 // if we know the next page, we show the indication for it right away; it looks 635 // weird if the indicators are lagging 636 int page = mNextPage; 637 if (page == INVALID_PAGE) { 638 page = mCurrentPage; 639 } 640 mPreviousIndicator.setLevel(page); 641 mNextIndicator.setLevel(page); 642 } 643 Launcher.setScreen(mCurrentPage); 644 }; 645 646 // As a ratio of screen height, the total distance we want the parallax effect to span 647 // vertically 648 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 649 return 1.1f; 650 } 651 652 // As a ratio of screen height, the total distance we want the parallax effect to span 653 // horizontally 654 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 655 float aspectRatio = width / (float) height; 656 657 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 658 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 659 // We will use these two data points to extrapolate how much the wallpaper parallax effect 660 // to span (ie travel) at any aspect ratio: 661 662 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 663 final float ASPECT_RATIO_PORTRAIT = 10/16f; 664 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 665 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 666 667 // To find out the desired width at different aspect ratios, we use the following two 668 // formulas, where the coefficient on x is the aspect ratio (width/height): 669 // (16/10)x + y = 1.5 670 // (10/16)x + y = 1.2 671 // We solve for x and y and end up with a final formula: 672 final float x = 673 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 674 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 675 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 676 return x * aspectRatio + y; 677 } 678 679 // The range of scroll values for Workspace 680 private int getScrollRange() { 681 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 682 } 683 684 protected void setWallpaperDimension() { 685 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 686 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 687 final int minDim = Math.min(display.getWidth(), display.getHeight()); 688 689 // We need to ensure that there is enough extra space in the wallpaper for the intended 690 // parallax effects 691 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 692 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 693 new Thread("setWallpaperDimension") { 694 public void run() { 695 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 696 } 697 }.start(); 698 } 699 700 public void setVerticalWallpaperOffset(float offset) { 701 mWallpaperOffset.setFinalY(offset); 702 } 703 public float getVerticalWallpaperOffset() { 704 return mWallpaperOffset.getCurrY(); 705 } 706 public void setHorizontalWallpaperOffset(float offset) { 707 mWallpaperOffset.setFinalX(offset); 708 } 709 public float getHorizontalWallpaperOffset() { 710 return mWallpaperOffset.getCurrX(); 711 } 712 713 private float wallpaperOffsetForCurrentScroll() { 714 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 715 // The wallpaper travel width is how far, from left to right, the wallpaper will move 716 // at this orientation (for example, in portrait mode we don't move all the way to the 717 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 718 int wallpaperTravelWidth = (int) (display.getWidth() * 719 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 720 721 // Set wallpaper offset steps (1 / (number of screens - 1)) 722 // We have 3 vertical offset states (centered, and then top/bottom aligned 723 // for all apps/customize) 724 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 725 726 int scrollRange = getScrollRange(); 727 float scrollProgressOffset = 0; 728 729 // Account for overscroll: you only see the absolute edge of the wallpaper if 730 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 731 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 732 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 733 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 734 if (isStaticWallpaper) { 735 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 736 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 737 scrollRange += 2 * overscrollOffset; 738 } 739 740 float scrollProgress = 741 mScrollX / (float) scrollRange + scrollProgressOffset; 742 float offsetInDips = wallpaperTravelWidth * scrollProgress + 743 (mWallpaperWidth - wallpaperTravelWidth) / 2; 744 float offset = offsetInDips / (float) mWallpaperWidth; 745 return offset; 746 } 747 private void syncWallpaperOffsetWithScroll() { 748 if (LauncherApplication.isScreenXLarge()) { 749 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 750 } 751 } 752 753 public void updateWallpaperOffsetImmediately() { 754 mUpdateWallpaperOffsetImmediately = true; 755 } 756 757 private void updateWallpaperOffsets() { 758 boolean updateNow = false; 759 boolean keepUpdating = true; 760 if (mUpdateWallpaperOffsetImmediately) { 761 updateNow = true; 762 keepUpdating = false; 763 mWallpaperOffset.jumpToFinal(); 764 mUpdateWallpaperOffsetImmediately = false; 765 } else { 766 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 767 } 768 if (updateNow) { 769 IBinder token = getWindowToken(); 770 if (token != null) { 771 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 772 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 773 } 774 } 775 if (keepUpdating) { 776 invalidate(); 777 } 778 } 779 780 class WallpaperOffsetInterpolator { 781 float mFinalHorizontalWallpaperOffset = 0.0f; 782 float mFinalVerticalWallpaperOffset = 0.5f; 783 float mHorizontalWallpaperOffset = 0.0f; 784 float mVerticalWallpaperOffset = 0.5f; 785 long mLastWallpaperOffsetUpdateTime; 786 boolean mIsMovingFast; 787 boolean mOverrideHorizontalCatchupConstant; 788 float mHorizontalCatchupConstant = 0.35f; 789 float mVerticalCatchupConstant = 0.35f; 790 791 public WallpaperOffsetInterpolator() { 792 } 793 794 public void setOverrideHorizontalCatchupConstant(boolean override) { 795 mOverrideHorizontalCatchupConstant = override; 796 } 797 798 public void setHorizontalCatchupConstant(float f) { 799 mHorizontalCatchupConstant = f; 800 } 801 802 public void setVerticalCatchupConstant(float f) { 803 mVerticalCatchupConstant = f; 804 } 805 806 public boolean computeScrollOffset() { 807 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 808 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 809 mIsMovingFast = false; 810 return false; 811 } 812 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 813 boolean isLandscape = display.getWidth() > display.getHeight(); 814 815 long currentTime = System.currentTimeMillis(); 816 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 817 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 818 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 819 820 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 821 if (!mIsMovingFast && xdiff > 0.07) { 822 mIsMovingFast = true; 823 } 824 825 float fractionToCatchUpIn1MsHorizontal; 826 if (mOverrideHorizontalCatchupConstant) { 827 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 828 } else if (mIsMovingFast) { 829 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 830 } else { 831 // slow 832 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 833 } 834 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 835 836 837 fractionToCatchUpIn1MsHorizontal /= 33f; 838 fractionToCatchUpIn1MsVertical /= 33f; 839 840 final float UPDATE_THRESHOLD = 0.00001f; 841 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 842 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 843 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 844 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 845 if (jumpToFinalValue) { 846 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 847 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 848 } else { 849 float percentToCatchUpVertical = 850 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 851 float percentToCatchUpHorizontal = 852 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 853 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 854 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 855 } 856 857 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 858 return true; 859 } 860 861 public float getCurrX() { 862 return mHorizontalWallpaperOffset; 863 } 864 865 public float getFinalX() { 866 return mFinalHorizontalWallpaperOffset; 867 } 868 869 public float getCurrY() { 870 return mVerticalWallpaperOffset; 871 } 872 873 public float getFinalY() { 874 return mFinalVerticalWallpaperOffset; 875 } 876 877 public void setFinalX(float x) { 878 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 879 } 880 881 public void setFinalY(float y) { 882 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 883 } 884 885 public void jumpToFinal() { 886 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 887 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 888 } 889 } 890 891 @Override 892 public void computeScroll() { 893 super.computeScroll(); 894 if (mSyncWallpaperOffsetWithScroll) { 895 syncWallpaperOffsetWithScroll(); 896 } 897 } 898 899 public void showOutlines() { 900 if (!mIsSmall && !mIsInUnshrinkAnimation) { 901 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 902 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 903 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 904 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 905 mChildrenOutlineFadeInAnimation.start(); 906 } 907 } 908 909 public void hideOutlines() { 910 if (!mIsSmall && !mIsInUnshrinkAnimation) { 911 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 912 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 913 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 914 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 915 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 916 mChildrenOutlineFadeOutAnimation.start(); 917 } 918 } 919 920 public void setChildrenOutlineAlpha(float alpha) { 921 mChildrenOutlineAlpha = alpha; 922 for (int i = 0; i < getChildCount(); i++) { 923 CellLayout cl = (CellLayout) getChildAt(i); 924 cl.setBackgroundAlpha(alpha); 925 } 926 } 927 928 public float getChildrenOutlineAlpha() { 929 return mChildrenOutlineAlpha; 930 } 931 932 private void showBackgroundGradientForAllApps() { 933 showBackgroundGradient(); 934 mDrawCustomizeTrayBackground = false; 935 } 936 937 private void showBackgroundGradientForCustomizeTray() { 938 showBackgroundGradient(); 939 mDrawCustomizeTrayBackground = true; 940 } 941 942 private void showBackgroundGradient() { 943 if (mBackground == null) return; 944 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 945 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 946 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 947 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 948 public void onAnimationUpdate(ValueAnimator animation) { 949 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 950 } 951 }); 952 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 953 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 954 mBackgroundFadeInAnimation.start(); 955 } 956 957 private void hideBackgroundGradient() { 958 if (mBackground == null) return; 959 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 960 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 961 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 962 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 963 public void onAnimationUpdate(ValueAnimator animation) { 964 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 965 } 966 }); 967 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 968 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 969 mBackgroundFadeOutAnimation.start(); 970 } 971 972 public void setBackgroundAlpha(float alpha) { 973 mBackgroundAlpha = alpha; 974 invalidate(); 975 } 976 977 public float getBackgroundAlpha() { 978 return mBackgroundAlpha; 979 } 980 981 /** 982 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 983 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 984 * as being larger. This method computes what offset the rotated view should be translated 985 * in order to minimize this perceived gap. 986 * @param degrees Angle of the view 987 * @param width Width of the view 988 * @param height Height of the view 989 * @return Offset to be used in a View.setTranslationX() call 990 */ 991 private float getOffsetXForRotation(float degrees, int width, int height) { 992 mMatrix.reset(); 993 mCamera.save(); 994 mCamera.rotateY(Math.abs(degrees)); 995 mCamera.getMatrix(mMatrix); 996 mCamera.restore(); 997 998 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 999 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1000 mTempFloat2[0] = width; 1001 mTempFloat2[1] = height; 1002 mMatrix.mapPoints(mTempFloat2); 1003 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1004 } 1005 1006 float backgroundAlphaInterpolator(float r) { 1007 float pivotA = 0.1f; 1008 float pivotB = 0.4f; 1009 if (r < pivotA) { 1010 return 0; 1011 } else if (r > pivotB) { 1012 return 1.0f; 1013 } else { 1014 return (r - pivotA)/(pivotB - pivotA); 1015 } 1016 } 1017 1018 float overScrollBackgroundAlphaInterpolator(float r) { 1019 float threshold = 0.08f; 1020 1021 if (r > mOverScrollMaxBackgroundAlpha) { 1022 mOverScrollMaxBackgroundAlpha = r; 1023 } else if (r < mOverScrollMaxBackgroundAlpha) { 1024 r = mOverScrollMaxBackgroundAlpha; 1025 } 1026 1027 return Math.min(r / threshold, 1.0f); 1028 } 1029 1030 @Override 1031 protected void screenScrolled(int screenCenter) { 1032 final int halfScreenSize = getMeasuredWidth() / 2; 1033 1034 for (int i = 0; i < getChildCount(); i++) { 1035 CellLayout cl = (CellLayout) getChildAt(i); 1036 if (cl != null) { 1037 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1038 int delta = screenCenter - (getChildOffset(i) - 1039 getRelativeChildOffset(i) + halfScreenSize); 1040 1041 float scrollProgress = delta / (totalDistance * 1.0f); 1042 scrollProgress = Math.min(scrollProgress, 1.0f); 1043 scrollProgress = Math.max(scrollProgress, -1.0f); 1044 1045 // If the current page (i) is being overscrolled, we use a different 1046 // set of rules for setting the background alpha multiplier. 1047 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1048 i == getChildCount() -1 )) { 1049 cl.setBackgroundAlphaMultiplier( 1050 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1051 mOverScrollPageIndex = i; 1052 } else if (mOverScrollPageIndex != i) { 1053 cl.setBackgroundAlphaMultiplier( 1054 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1055 } 1056 1057 float rotation = WORKSPACE_ROTATION * scrollProgress; 1058 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1059 cl.setTranslationX(translationX); 1060 1061 cl.setRotationY(rotation); 1062 } 1063 } 1064 } 1065 1066 protected void onAttachedToWindow() { 1067 super.onAttachedToWindow(); 1068 computeScroll(); 1069 mDragController.setWindowToken(getWindowToken()); 1070 } 1071 1072 @Override 1073 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1074 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1075 mUpdateWallpaperOffsetImmediately = true; 1076 } 1077 super.onLayout(changed, left, top, right, bottom); 1078 1079 // if shrinkToBottom() is called on initialization, it has to be deferred 1080 // until after the first call to onLayout so that it has the correct width 1081 if (mWaitingToShrink) { 1082 // shrink can trigger a synchronous onLayout call, so we 1083 // post this to avoid a stack overflow / tangled onLayout calls 1084 post(new Runnable() { 1085 public void run() { 1086 shrink(mWaitingToShrinkState, false); 1087 mWaitingToShrink = false; 1088 } 1089 }); 1090 } 1091 1092 if (LauncherApplication.isInPlaceRotationEnabled()) { 1093 // When the device is rotated, the scroll position of the current screen 1094 // needs to be refreshed 1095 setCurrentPage(getCurrentPage()); 1096 } 1097 } 1098 1099 @Override 1100 protected void onDraw(Canvas canvas) { 1101 updateWallpaperOffsets(); 1102 1103 // Draw the background gradient if necessary 1104 if (mBackground != null && mBackgroundAlpha > 0.0f) { 1105 int alpha = (int) (mBackgroundAlpha * 255); 1106 if (mDrawCustomizeTrayBackground) { 1107 // Find out where to offset the gradient for the customization tray content 1108 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1109 final Matrix m = mCustomizationDrawer.getMatrix(); 1110 mCustomizationDrawerTransformedPos[0] = 0.0f; 1111 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1112 m.mapPoints(mCustomizationDrawerTransformedPos); 1113 1114 // Draw the bg glow behind the gradient 1115 mCustomizeTrayBackground.setAlpha(alpha); 1116 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1117 getMeasuredHeight()); 1118 mCustomizeTrayBackground.draw(canvas); 1119 1120 // Draw the bg gradient 1121 final int offset = (int) (mCustomizationDrawerPos[1] + 1122 mCustomizationDrawerTransformedPos[1]); 1123 mBackground.setAlpha(alpha); 1124 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1125 offset + getMeasuredHeight()); 1126 mBackground.draw(canvas); 1127 } else { 1128 mBackground.setAlpha(alpha); 1129 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1130 getMeasuredHeight()); 1131 mBackground.draw(canvas); 1132 } 1133 } 1134 super.onDraw(canvas); 1135 } 1136 1137 @Override 1138 protected void dispatchDraw(Canvas canvas) { 1139 if (mIsSmall || mIsInUnshrinkAnimation) { 1140 // Draw all the workspaces if we're small 1141 final int pageCount = getChildCount(); 1142 final long drawingTime = getDrawingTime(); 1143 for (int i = 0; i < pageCount; i++) { 1144 final View page = (View) getChildAt(i); 1145 1146 drawChild(canvas, page, drawingTime); 1147 } 1148 } else { 1149 super.dispatchDraw(canvas); 1150 1151 final int width = getWidth(); 1152 final int height = getHeight(); 1153 1154 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1155 if (mInScrollArea && (height > width)) { 1156 final int pageHeight = getChildAt(0).getHeight(); 1157 1158 // This determines the height of the glowing edge: 90% of the page height 1159 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1160 1161 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1162 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1163 1164 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1165 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1166 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1167 d.draw(canvas); 1168 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1169 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1170 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1171 d.draw(canvas); 1172 } 1173 } 1174 1175 if (mDropView != null) { 1176 // We are animating an item that was just dropped on the home screen. 1177 // Render its View in the current animation position. 1178 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1179 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1180 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1181 canvas.translate(xPos, yPos); 1182 mDropView.draw(canvas); 1183 canvas.restore(); 1184 } 1185 } 1186 } 1187 1188 @Override 1189 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1190 if (!mLauncher.isAllAppsVisible()) { 1191 final Folder openFolder = getOpenFolder(); 1192 if (openFolder != null) { 1193 return openFolder.requestFocus(direction, previouslyFocusedRect); 1194 } else { 1195 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1196 } 1197 } 1198 return false; 1199 } 1200 1201 @Override 1202 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1203 if (!mLauncher.isAllAppsVisible()) { 1204 final Folder openFolder = getOpenFolder(); 1205 if (openFolder != null) { 1206 openFolder.addFocusables(views, direction); 1207 } else { 1208 super.addFocusables(views, direction, focusableMode); 1209 } 1210 } 1211 } 1212 1213 @Override 1214 public boolean dispatchTouchEvent(MotionEvent ev) { 1215 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1216 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1217 // ie when you click on a mini-screen, it zooms back to that screen) 1218 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1219 return false; 1220 } 1221 } 1222 1223 return super.dispatchTouchEvent(ev); 1224 } 1225 1226 void enableChildrenCache(int fromPage, int toPage) { 1227 if (fromPage > toPage) { 1228 final int temp = fromPage; 1229 fromPage = toPage; 1230 toPage = temp; 1231 } 1232 1233 final int screenCount = getChildCount(); 1234 1235 fromPage = Math.max(fromPage, 0); 1236 toPage = Math.min(toPage, screenCount - 1); 1237 1238 for (int i = fromPage; i <= toPage; i++) { 1239 final CellLayout layout = (CellLayout) getChildAt(i); 1240 layout.setChildrenDrawnWithCacheEnabled(true); 1241 layout.setChildrenDrawingCacheEnabled(true); 1242 } 1243 } 1244 1245 void clearChildrenCache() { 1246 final int screenCount = getChildCount(); 1247 for (int i = 0; i < screenCount; i++) { 1248 final CellLayout layout = (CellLayout) getChildAt(i); 1249 layout.setChildrenDrawnWithCacheEnabled(false); 1250 } 1251 } 1252 1253 @Override 1254 public boolean onTouchEvent(MotionEvent ev) { 1255 AllAppsPagedView allApps = (AllAppsPagedView) 1256 mLauncher.findViewById(R.id.all_apps_paged_view); 1257 1258 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1259 && allApps != null) { 1260 if (ev.getAction() == MotionEvent.ACTION_UP && 1261 allApps.getTouchState() == TOUCH_STATE_REST) { 1262 1263 // Cancel any scrolling that is in progress. 1264 if (!mScroller.isFinished()) { 1265 mScroller.abortAnimation(); 1266 } 1267 setCurrentPage(mCurrentPage); 1268 1269 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1270 mLauncher.showWorkspace(true); 1271 } 1272 allApps.onTouchEvent(ev); 1273 return true; 1274 } else { 1275 return allApps.onTouchEvent(ev); 1276 } 1277 } 1278 return super.onTouchEvent(ev); 1279 } 1280 1281 protected void enableChildrenLayers(boolean enable) { 1282 for (int i = 0; i < getPageCount(); i++) { 1283 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1284 } 1285 } 1286 @Override 1287 protected void pageBeginMoving() { 1288 enableChildrenLayers(true); 1289 super.pageBeginMoving(); 1290 } 1291 1292 @Override 1293 protected void pageEndMoving() { 1294 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1295 enableChildrenLayers(false); 1296 } 1297 super.pageEndMoving(); 1298 } 1299 1300 @Override 1301 protected void onWallpaperTap(MotionEvent ev) { 1302 final int[] position = mTempCell; 1303 getLocationOnScreen(position); 1304 1305 int pointerIndex = ev.getActionIndex(); 1306 position[0] += (int) ev.getX(pointerIndex); 1307 position[1] += (int) ev.getY(pointerIndex); 1308 1309 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1310 ev.getAction() == MotionEvent.ACTION_UP 1311 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1312 position[0], position[1], 0, null); 1313 } 1314 1315 public boolean isSmall() { 1316 return mIsSmall; 1317 } 1318 1319 private float getYScaleForScreen(int screen) { 1320 int x = Math.abs(screen - 2); 1321 1322 // TODO: This should be generalized for use with arbitrary rotation angles. 1323 switch(x) { 1324 case 0: return EXTRA_SCALE_FACTOR_0; 1325 case 1: return EXTRA_SCALE_FACTOR_1; 1326 case 2: return EXTRA_SCALE_FACTOR_2; 1327 } 1328 return 1.0f; 1329 } 1330 1331 public void shrink(ShrinkState shrinkState) { 1332 shrink(shrinkState, true); 1333 } 1334 1335 private int getCustomizeDrawerHeight() { 1336 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1337 int height = customizationDrawer.getHeight(); 1338 TabWidget tabWidget = (TabWidget) 1339 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1340 if (tabWidget.getTabCount() > 0) { 1341 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1342 // subtract the empty space above the tab text 1343 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1344 } 1345 return height; 1346 } 1347 1348 // we use this to shrink the workspace for the all apps view and the customize view 1349 public void shrink(ShrinkState shrinkState, boolean animated) { 1350 // In the launcher interaction model, we're never in the state where we're shrunken and 1351 // visible in the bottom of the screen, and then want to fade to being invisible. 1352 // After spring loaded mode ends, this method was getting called twice, the first time 1353 // with BOTTOM_VISIBLE (what we want) and a second time with BOTTOM_INVISIBLE (not 1354 // what we want). As a temporary solution, we just change the second call to BOTTOM_VISIBLE 1355 if (mIsSmall && mShrinkState == ShrinkState.BOTTOM_VISIBLE) { 1356 shrinkState = ShrinkState.BOTTOM_VISIBLE; 1357 } 1358 if (mFirstLayout) { 1359 // (mFirstLayout == "first layout has not happened yet") 1360 // if we get a call to shrink() as part of our initialization (for example, if 1361 // Launcher is started in All Apps mode) then we need to wait for a layout call 1362 // to get our width so we can layout the mini-screen views correctly 1363 mWaitingToShrink = true; 1364 mWaitingToShrinkState = shrinkState; 1365 return; 1366 } 1367 // Stop any scrolling, move to the current page right away 1368 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1369 if (!mIsDragInProcess) { 1370 updateWhichPagesAcceptDrops(shrinkState); 1371 } 1372 1373 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1374 if (currentPage == null) { 1375 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1376 + " mNextPage " + mNextPage); 1377 return; 1378 } 1379 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1380 currentPage.setBackgroundAlpha(0.0f); 1381 } 1382 currentPage.setBackgroundAlphaMultiplier(1.0f); 1383 1384 mIsSmall = true; 1385 mShrinkState = shrinkState; 1386 1387 // we intercept and reject all touch events when we're small, so be sure to reset the state 1388 mTouchState = TOUCH_STATE_REST; 1389 mActivePointerId = INVALID_POINTER; 1390 1391 final Resources res = getResources(); 1392 final int screenWidth = getWidth(); 1393 final int screenHeight = getHeight(); 1394 1395 // Making the assumption that all pages have the same width as the 0th 1396 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1397 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1398 1399 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1400 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1401 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1402 1403 final int screenCount = getChildCount(); 1404 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1405 1406 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1407 float y = (isPortrait ? 1408 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1409 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1410 float finalAlpha = 1.0f; 1411 float extraShrinkFactor = 1.0f; 1412 1413 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1414 y = screenHeight - y - scaledPageHeight; 1415 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1416 // We shrink and disappear to nothing in the case of all apps 1417 // (which is when we shrink to the bottom) 1418 y = screenHeight - y - scaledPageHeight; 1419 finalAlpha = 0.0f; 1420 } else if (shrinkState == ShrinkState.MIDDLE) { 1421 y = screenHeight / 2 - scaledPageHeight / 2; 1422 finalAlpha = 1.0f; 1423 } else if (shrinkState == ShrinkState.TOP) { 1424 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1425 } 1426 1427 int duration; 1428 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1429 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1430 } else { 1431 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1432 } 1433 1434 // We animate all the screens to the centered position in workspace 1435 // At the same time, the screens become greyed/dimmed 1436 1437 // newX is initialized to the left-most position of the centered screens 1438 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1439 1440 // We are going to scale about the center of the view, so we need to adjust the positions 1441 // of the views accordingly 1442 x -= (pageWidth - scaledPageWidth) / 2.0f; 1443 y -= (pageHeight - scaledPageHeight) / 2.0f; 1444 1445 if (mAnimator != null) { 1446 mAnimator.cancel(); 1447 } 1448 1449 mAnimator = new AnimatorSet(); 1450 1451 final float[] oldXs = new float[getChildCount()]; 1452 final float[] oldYs = new float[getChildCount()]; 1453 final float[] oldScaleXs = new float[getChildCount()]; 1454 final float[] oldScaleYs = new float[getChildCount()]; 1455 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1456 final float[] oldAlphas = new float[getChildCount()]; 1457 final float[] oldRotationYs = new float[getChildCount()]; 1458 final float[] newXs = new float[getChildCount()]; 1459 final float[] newYs = new float[getChildCount()]; 1460 final float[] newScaleXs = new float[getChildCount()]; 1461 final float[] newScaleYs = new float[getChildCount()]; 1462 final float[] newBackgroundAlphas = new float[getChildCount()]; 1463 final float[] newAlphas = new float[getChildCount()]; 1464 final float[] newRotationYs = new float[getChildCount()]; 1465 1466 for (int i = 0; i < screenCount; i++) { 1467 final CellLayout cl = (CellLayout) getChildAt(i); 1468 1469 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1470 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1471 float rotationScaleY = getYScaleForScreen(i); 1472 1473 oldAlphas[i] = cl.getAlpha(); 1474 newAlphas[i] = finalAlpha; 1475 if (animated) { 1476 oldXs[i] = cl.getX(); 1477 oldYs[i] = cl.getY(); 1478 oldScaleXs[i] = cl.getScaleX(); 1479 oldScaleYs[i] = cl.getScaleY(); 1480 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1481 oldRotationYs[i] = cl.getRotationY(); 1482 newXs[i] = x; 1483 newYs[i] = y; 1484 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1485 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1486 newBackgroundAlphas[i] = finalAlpha; 1487 newRotationYs[i] = rotation; 1488 } else { 1489 cl.setX((int)x); 1490 cl.setY((int)y); 1491 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1492 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1493 cl.setBackgroundAlpha(finalAlpha); 1494 cl.setAlpha(finalAlpha); 1495 cl.setRotationY(rotation); 1496 mShrinkAnimationListener.onAnimationEnd(null); 1497 } 1498 // increment newX for the next screen 1499 x += scaledPageWidth + extraScaledSpacing; 1500 } 1501 1502 float wallpaperOffset = 0.5f; 1503 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1504 int wallpaperTravelHeight = (int) (display.getHeight() * 1505 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1506 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1507 boolean isLandscape = display.getWidth() > display.getHeight(); 1508 1509 switch (shrinkState) { 1510 // animating in 1511 case TOP: 1512 // customize 1513 wallpaperOffset = 0.5f + offsetFromCenter; 1514 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1515 break; 1516 case MIDDLE: 1517 case SPRING_LOADED: 1518 wallpaperOffset = 0.5f; 1519 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1520 break; 1521 case BOTTOM_HIDDEN: 1522 case BOTTOM_VISIBLE: 1523 // allapps 1524 wallpaperOffset = 0.5f - offsetFromCenter; 1525 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1526 break; 1527 } 1528 1529 setLayoutScale(1.0f); 1530 if (animated) { 1531 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1532 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1533 1534 mSyncWallpaperOffsetWithScroll = false; 1535 1536 ValueAnimator animWithInterpolator = 1537 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1538 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1539 1540 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1541 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1542 final float newHorizontalWallpaperOffset = 0.5f; 1543 final float newVerticalWallpaperOffset = wallpaperOffset; 1544 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1545 public void onAnimationUpdate(ValueAnimator animation) { 1546 final float b = (Float) animation.getAnimatedValue(); 1547 final float a = 1f - b; 1548 if (b == 0f) { 1549 // an optimization, and required for correct behavior. 1550 return; 1551 } 1552 fastInvalidate(); 1553 setHorizontalWallpaperOffset( 1554 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1555 setVerticalWallpaperOffset( 1556 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1557 for (int i = 0; i < screenCount; i++) { 1558 final CellLayout cl = (CellLayout) getChildAt(i); 1559 cl.fastInvalidate(); 1560 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1561 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1562 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1563 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1564 cl.setFastBackgroundAlpha( 1565 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1566 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1567 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1568 } 1569 } 1570 }); 1571 mAnimator.playTogether(animWithInterpolator); 1572 mAnimator.addListener(mShrinkAnimationListener); 1573 mAnimator.start(); 1574 } else { 1575 setVerticalWallpaperOffset(wallpaperOffset); 1576 setHorizontalWallpaperOffset(0.5f); 1577 updateWallpaperOffsetImmediately(); 1578 } 1579 setChildrenDrawnWithCacheEnabled(true); 1580 1581 if (shrinkState == ShrinkState.TOP) { 1582 showBackgroundGradientForCustomizeTray(); 1583 } else { 1584 showBackgroundGradientForAllApps(); 1585 } 1586 } 1587 1588 /* 1589 * This interpolator emulates the rate at which the perceived scale of an object changes 1590 * as its distance from a camera increases. When this interpolator is applied to a scale 1591 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1592 * from the camera. 1593 */ 1594 static class ZInterpolator implements TimeInterpolator { 1595 private float focalLength; 1596 1597 public ZInterpolator(float foc) { 1598 focalLength = foc; 1599 } 1600 1601 public float getInterpolation(float input) { 1602 return (1.0f - focalLength / (focalLength + input)) / 1603 (1.0f - focalLength / (focalLength + 1.0f)); 1604 } 1605 } 1606 1607 /* 1608 * The exact reverse of ZInterpolator. 1609 */ 1610 static class InverseZInterpolator implements TimeInterpolator { 1611 private ZInterpolator zInterpolator; 1612 public InverseZInterpolator(float foc) { 1613 zInterpolator = new ZInterpolator(foc); 1614 } 1615 public float getInterpolation(float input) { 1616 return 1 - zInterpolator.getInterpolation(1 - input); 1617 } 1618 } 1619 1620 /* 1621 * ZInterpolator compounded with an ease-out. 1622 */ 1623 static class ZoomOutInterpolator implements TimeInterpolator { 1624 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1625 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1626 1627 public float getInterpolation(float input) { 1628 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1629 } 1630 } 1631 1632 /* 1633 * InvereZInterpolator compounded with an ease-out. 1634 */ 1635 static class ZoomInInterpolator implements TimeInterpolator { 1636 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1637 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1638 1639 public float getInterpolation(float input) { 1640 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1641 } 1642 } 1643 1644 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1645 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1646 1647 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1648 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1649 } 1650 1651 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1652 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1653 } 1654 1655 private void updateWhichPagesAcceptDropsHelper( 1656 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1657 final int screenCount = getChildCount(); 1658 for (int i = 0; i < screenCount; i++) { 1659 CellLayout cl = (CellLayout) getChildAt(i); 1660 cl.setIsDragOccuring(isDragHappening); 1661 switch (state) { 1662 case TOP: 1663 cl.setIsDefaultDropTarget(i == mCurrentPage); 1664 case BOTTOM_HIDDEN: 1665 case BOTTOM_VISIBLE: 1666 case SPRING_LOADED: 1667 if (state != ShrinkState.TOP) { 1668 cl.setIsDefaultDropTarget(false); 1669 } 1670 if (!isDragHappening) { 1671 // even if a drag isn't happening, we don't want to show a screen as 1672 // accepting drops if it doesn't have at least one free cell 1673 spanX = 1; 1674 spanY = 1; 1675 } 1676 // the page accepts drops if we can find at least one empty spot 1677 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1678 break; 1679 default: 1680 throw new RuntimeException("Unhandled ShrinkState " + state); 1681 } 1682 } 1683 } 1684 1685 /* 1686 * 1687 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1688 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1689 * 1690 * These methods mark the appropriate pages as accepting drops (which alters their visual 1691 * appearance). 1692 * 1693 */ 1694 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1695 mIsDragInProcess = true; 1696 1697 final Canvas canvas = new Canvas(); 1698 1699 // We need to add extra padding to the bitmap to make room for the glow effect 1700 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1701 1702 CellLayout cl = (CellLayout) getChildAt(0); 1703 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1704 // The outline is used to visualize where the item will land if dropped 1705 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1706 1707 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1708 } 1709 1710 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1711 // never dragged over 1712 public void onDragStopped(boolean success) { 1713 mLastDragView = null; 1714 // In the success case, DragController has already called onDragExit() 1715 if (!success) { 1716 doDragExit(); 1717 } 1718 mIsDragInProcess = false; 1719 updateWhichPagesAcceptDrops(mShrinkState); 1720 } 1721 1722 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1723 public void unshrink(CellLayout clThatWasClicked) { 1724 unshrink(clThatWasClicked, false); 1725 } 1726 1727 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1728 int newCurrentPage = indexOfChild(clThatWasClicked); 1729 if (mIsSmall) { 1730 if (springLoaded) { 1731 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1732 } 1733 scrollToNewPageWithoutMovingPages(newCurrentPage); 1734 unshrink(true, springLoaded); 1735 } 1736 } 1737 1738 1739 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1740 mShrinkState = ShrinkState.SPRING_LOADED; 1741 unshrink(clThatWasClicked, true); 1742 mDragTargetLayout.onDragEnter(); 1743 } 1744 1745 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1746 shrink(shrinkState); 1747 if (mDragTargetLayout != null) { 1748 mDragTargetLayout.onDragExit(); 1749 } 1750 } 1751 1752 void unshrink(boolean animated) { 1753 unshrink(animated, false); 1754 } 1755 1756 void unshrink(boolean animated, boolean springLoaded) { 1757 mWaitingToShrink = false; 1758 if (mIsSmall) { 1759 float finalScaleFactor = 1.0f; 1760 float finalBackgroundAlpha = 0.0f; 1761 if (springLoaded) { 1762 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1763 finalBackgroundAlpha = 1.0f; 1764 } else { 1765 mIsSmall = false; 1766 } 1767 if (mAnimator != null) { 1768 mAnimator.cancel(); 1769 } 1770 1771 mAnimator = new AnimatorSet(); 1772 final int screenCount = getChildCount(); 1773 1774 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1775 1776 final float[] oldTranslationXs = new float[getChildCount()]; 1777 final float[] oldTranslationYs = new float[getChildCount()]; 1778 final float[] oldScaleXs = new float[getChildCount()]; 1779 final float[] oldScaleYs = new float[getChildCount()]; 1780 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1781 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1782 final float[] oldAlphas = new float[getChildCount()]; 1783 final float[] oldRotationYs = new float[getChildCount()]; 1784 final float[] newTranslationXs = new float[getChildCount()]; 1785 final float[] newTranslationYs = new float[getChildCount()]; 1786 final float[] newScaleXs = new float[getChildCount()]; 1787 final float[] newScaleYs = new float[getChildCount()]; 1788 final float[] newBackgroundAlphas = new float[getChildCount()]; 1789 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1790 final float[] newAlphas = new float[getChildCount()]; 1791 final float[] newRotationYs = new float[getChildCount()]; 1792 1793 for (int i = 0; i < screenCount; i++) { 1794 final CellLayout cl = (CellLayout)getChildAt(i); 1795 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1796 float finalAlphaMultiplierValue = 1797 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1798 0.0f : 1.0f; 1799 float rotation = 0.0f; 1800 1801 if (i < mCurrentPage) { 1802 rotation = WORKSPACE_ROTATION; 1803 } else if (i > mCurrentPage) { 1804 rotation = -WORKSPACE_ROTATION; 1805 } 1806 1807 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1808 1809 oldAlphas[i] = cl.getAlpha(); 1810 newAlphas[i] = finalAlphaValue; 1811 if (animated) { 1812 oldTranslationXs[i] = cl.getTranslationX(); 1813 oldTranslationYs[i] = cl.getTranslationY(); 1814 oldScaleXs[i] = cl.getScaleX(); 1815 oldScaleYs[i] = cl.getScaleY(); 1816 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1817 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1818 oldRotationYs[i] = cl.getRotationY(); 1819 1820 newTranslationXs[i] = translation; 1821 newTranslationYs[i] = 0f; 1822 newScaleXs[i] = finalScaleFactor; 1823 newScaleYs[i] = finalScaleFactor; 1824 newBackgroundAlphas[i] = finalBackgroundAlpha; 1825 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1826 newRotationYs[i] = rotation; 1827 } else { 1828 cl.setTranslationX(translation); 1829 cl.setTranslationY(0.0f); 1830 cl.setScaleX(finalScaleFactor); 1831 cl.setScaleY(finalScaleFactor); 1832 cl.setBackgroundAlpha(0.0f); 1833 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1834 cl.setAlpha(finalAlphaValue); 1835 cl.setRotationY(rotation); 1836 mUnshrinkAnimationListener.onAnimationEnd(null); 1837 } 1838 } 1839 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1840 boolean isLandscape = display.getWidth() > display.getHeight(); 1841 switch (mShrinkState) { 1842 // animating out 1843 case TOP: 1844 // customize 1845 if (animated) { 1846 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1847 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1848 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1849 } 1850 break; 1851 case MIDDLE: 1852 case SPRING_LOADED: 1853 if (animated) { 1854 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1855 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1856 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1857 } 1858 break; 1859 case BOTTOM_HIDDEN: 1860 case BOTTOM_VISIBLE: 1861 // all apps 1862 if (animated) { 1863 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1864 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1865 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1866 } 1867 break; 1868 } 1869 if (animated) { 1870 ValueAnimator animWithInterpolator = 1871 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1872 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1873 1874 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1875 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1876 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1877 final float newVerticalWallpaperOffset = 0.5f; 1878 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1879 public void onAnimationUpdate(ValueAnimator animation) { 1880 final float b = (Float) animation.getAnimatedValue(); 1881 final float a = 1f - b; 1882 if (b == 0f) { 1883 // an optimization, but not required 1884 return; 1885 } 1886 fastInvalidate(); 1887 setHorizontalWallpaperOffset( 1888 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1889 setVerticalWallpaperOffset( 1890 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1891 for (int i = 0; i < screenCount; i++) { 1892 final CellLayout cl = (CellLayout) getChildAt(i); 1893 cl.fastInvalidate(); 1894 cl.setFastTranslationX( 1895 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1896 cl.setFastTranslationY( 1897 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1898 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1899 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1900 cl.setFastBackgroundAlpha( 1901 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1902 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1903 b * newBackgroundAlphaMultipliers[i]); 1904 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1905 } 1906 } 1907 }); 1908 1909 ValueAnimator rotationAnim = 1910 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1911 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1912 rotationAnim.addUpdateListener(new AnimatorUpdateListener() { 1913 public void onAnimationUpdate(ValueAnimator animation) { 1914 // don't invalidate workspace because we did it above 1915 final float b = (Float) animation.getAnimatedValue(); 1916 final float a = 1f - b; 1917 if (b == 0f) { 1918 // an optimization, but not required 1919 return; 1920 } 1921 for (int i = 0; i < screenCount; i++) { 1922 final CellLayout cl = (CellLayout) getChildAt(i); 1923 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1924 } 1925 } 1926 }); 1927 1928 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1929 // If we call this when we're not animated, onAnimationEnd is never called on 1930 // the listener; make sure we only use the listener when we're actually animating 1931 mAnimator.addListener(mUnshrinkAnimationListener); 1932 mAnimator.start(); 1933 } else { 1934 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1935 setVerticalWallpaperOffset(0.5f); 1936 updateWallpaperOffsetImmediately(); 1937 } 1938 } 1939 1940 if (!springLoaded) { 1941 hideBackgroundGradient(); 1942 } 1943 } 1944 1945 /** 1946 * Draw the View v into the given Canvas. 1947 * 1948 * @param v the view to draw 1949 * @param destCanvas the canvas to draw on 1950 * @param padding the horizontal and vertical padding to use when drawing 1951 */ 1952 private void drawDragView(View v, Canvas destCanvas, int padding) { 1953 final Rect clipRect = mTempRect; 1954 v.getDrawingRect(clipRect); 1955 1956 // For a TextView, adjust the clip rect so that we don't include the text label 1957 if (v instanceof BubbleTextView) { 1958 final BubbleTextView tv = (BubbleTextView) v; 1959 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1960 tv.getLayout().getLineTop(0); 1961 } else if (v instanceof TextView) { 1962 final TextView tv = (TextView) v; 1963 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1964 tv.getLayout().getLineTop(0); 1965 } 1966 1967 // Draw the View into the bitmap. 1968 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1969 // they set scrollX and scrollY to large values to achieve centered text 1970 1971 destCanvas.save(); 1972 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1973 destCanvas.clipRect(clipRect, Op.REPLACE); 1974 v.draw(destCanvas); 1975 destCanvas.restore(); 1976 } 1977 1978 /** 1979 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1980 * Responsibility for the bitmap is transferred to the caller. 1981 */ 1982 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1983 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1984 final Bitmap b = Bitmap.createBitmap( 1985 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1986 1987 canvas.setBitmap(b); 1988 drawDragView(v, canvas, padding); 1989 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1990 return b; 1991 } 1992 1993 /** 1994 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1995 * Responsibility for the bitmap is transferred to the caller. 1996 */ 1997 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1998 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1999 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2000 canvas.setBitmap(b); 2001 2002 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2003 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2004 (h - padding) / (float) orig.getHeight()); 2005 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2006 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2007 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2008 2009 // center the image 2010 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2011 2012 Paint p = new Paint(); 2013 p.setFilterBitmap(true); 2014 canvas.drawBitmap(orig, src, dst, p); 2015 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2016 2017 return b; 2018 } 2019 2020 /** 2021 * Creates a drag outline to represent a drop (that we don't have the actual information for 2022 * yet). May be changed in the future to alter the drop outline slightly depending on the 2023 * clip description mime data. 2024 */ 2025 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2026 Resources r = getResources(); 2027 final int outlineColor = r.getColor(R.color.drag_outline_color); 2028 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2029 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2030 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2031 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2032 final Bitmap b = Bitmap.createBitmap( 2033 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2034 2035 canvas.setBitmap(b); 2036 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2037 rectRadius, rectRadius, mExternalDragOutlinePaint); 2038 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2039 return b; 2040 } 2041 2042 /** 2043 * Returns a new bitmap to show when the given View is being dragged around. 2044 * Responsibility for the bitmap is transferred to the caller. 2045 */ 2046 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2047 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2048 final Bitmap b = Bitmap.createBitmap( 2049 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2050 2051 canvas.setBitmap(b); 2052 canvas.drawBitmap(mDragOutline, 0, 0, null); 2053 drawDragView(v, canvas, padding); 2054 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2055 2056 return b; 2057 } 2058 2059 void startDrag(CellLayout.CellInfo cellInfo) { 2060 View child = cellInfo.cell; 2061 2062 // Make sure the drag was started by a long press as opposed to a long click. 2063 if (!child.isInTouchMode()) { 2064 return; 2065 } 2066 2067 mDragInfo = cellInfo; 2068 2069 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2070 current.onDragChild(child); 2071 2072 child.clearFocus(); 2073 child.setPressed(false); 2074 2075 final Canvas canvas = new Canvas(); 2076 2077 // We need to add extra padding to the bitmap to make room for the glow effect 2078 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2079 2080 // The outline is used to visualize where the item will land if dropped 2081 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2082 2083 // The drag bitmap follows the touch point around on the screen 2084 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2085 2086 final int bmpWidth = b.getWidth(); 2087 final int bmpHeight = b.getHeight(); 2088 child.getLocationOnScreen(mTempXY); 2089 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2090 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2091 mLauncher.lockScreenOrientation(); 2092 mDragController.startDrag( 2093 b, screenX, screenY, this, child.getTag(), DragController.DRAG_ACTION_MOVE); 2094 b.recycle(); 2095 } 2096 2097 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2098 boolean insertAtFirst, int intersectX, int intersectY) { 2099 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2100 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2101 2102 final int[] cellXY = new int[2]; 2103 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2104 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2105 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2106 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2107 cellXY[0], cellXY[1]); 2108 } 2109 2110 private void setPositionForDropAnimation( 2111 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2112 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2113 2114 // Based on the position of the drag view, find the top left of the original view 2115 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 2116 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 2117 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 2118 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 2119 2120 // Set its old pos (in the new parent's coordinates); it will be animated 2121 // in animateViewIntoPosition after the next layout pass 2122 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2123 lp.oldY = viewY - (parent.getTop() - mScrollY); 2124 } 2125 2126 /* 2127 * We should be careful that this method cannot result in any synchronous requestLayout() 2128 * calls, as it is called from onLayout(). 2129 */ 2130 public void animateViewIntoPosition(final View view) { 2131 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2132 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2133 2134 // Convert the animation params to be relative to the Workspace, not the CellLayout 2135 final int fromX = lp.oldX + parent.getLeft(); 2136 final int fromY = lp.oldY + parent.getTop(); 2137 2138 final int dx = lp.x - lp.oldX; 2139 final int dy = lp.y - lp.oldY; 2140 2141 // Calculate the duration of the animation based on the object's distance 2142 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2143 final Resources res = getResources(); 2144 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2145 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2146 if (dist < maxDist) { 2147 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2148 } 2149 2150 if (mDropAnim != null) { 2151 mDropAnim.end(); 2152 } 2153 mDropAnim = new ValueAnimator(); 2154 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2155 2156 // The view is invisible during the animation; we render it manually. 2157 mDropAnim.addListener(new AnimatorListenerAdapter() { 2158 public void onAnimationStart(Animator animation) { 2159 // Set this here so that we don't render it until the animation begins 2160 mDropView = view; 2161 } 2162 2163 public void onAnimationEnd(Animator animation) { 2164 if (mDropView != null) { 2165 mDropView.setVisibility(View.VISIBLE); 2166 mDropView = null; 2167 } 2168 } 2169 }); 2170 2171 mDropAnim.setDuration(duration); 2172 mDropAnim.setFloatValues(0.0f, 1.0f); 2173 mDropAnim.removeAllUpdateListeners(); 2174 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2175 public void onAnimationUpdate(ValueAnimator animation) { 2176 final float percent = (Float) animation.getAnimatedValue(); 2177 // Invalidate the old position 2178 invalidate(mDropViewPos[0], mDropViewPos[1], 2179 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2180 2181 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2182 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2183 invalidate(mDropViewPos[0], mDropViewPos[1], 2184 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2185 } 2186 }); 2187 2188 mDropAnim.start(); 2189 } 2190 2191 /** 2192 * {@inheritDoc} 2193 */ 2194 public boolean acceptDrop(DragSource source, int x, int y, 2195 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2196 2197 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2198 if (source != this) { 2199 // Don't accept the drop if we're not over a screen at time of drop 2200 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2201 return false; 2202 } 2203 2204 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2205 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2206 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2207 2208 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2209 2210 // Don't accept the drop if there's no room for the item 2211 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2212 mLauncher.showOutOfSpaceMessage(); 2213 return false; 2214 } 2215 } 2216 return true; 2217 } 2218 2219 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2220 DragView dragView, Object dragInfo) { 2221 boolean largeOrSpringLoaded = !mIsSmall || mWasSpringLoadedOnDragExit; 2222 int originX = largeOrSpringLoaded ? x - xOffset : x - xOffset + dragView.getWidth() / 2; 2223 int originY = largeOrSpringLoaded ? y - yOffset : y - yOffset + dragView.getHeight() / 2; 2224 2225 if (mIsSmall || mIsInUnshrinkAnimation) { 2226 // get originX and originY in the local coordinate system of the screen 2227 mTempOriginXY[0] = originX; 2228 mTempOriginXY[1] = originY; 2229 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 2230 originX = (int)mTempOriginXY[0]; 2231 originY = (int)mTempOriginXY[1]; 2232 if (!largeOrSpringLoaded) { 2233 originX -= mDragTargetLayout.getCellWidth() / 2; 2234 originY -= mDragTargetLayout.getCellHeight() / 2; 2235 } 2236 } 2237 2238 // When you are in customization mode and drag to a particular screen, make that the 2239 // new current/default screen, so any subsequent taps add items to that screen 2240 if (!mLauncher.isAllAppsVisible()) { 2241 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2242 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2243 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2244 } 2245 } 2246 2247 if (source != this) { 2248 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2249 // When the workspace is shrunk and the drop comes from customize, don't actually 2250 // add the item to the screen -- customize will do this itself 2251 return; 2252 } 2253 onDropExternal(new int[] { originX, originY }, dragInfo, mDragTargetLayout, false); 2254 } else if (mDragInfo != null) { 2255 final View cell = mDragInfo.cell; 2256 CellLayout dropTargetLayout = mDragTargetLayout; 2257 2258 // Handle the case where the user drops when in the scroll area. 2259 // This is treated as a drop on the adjacent page. 2260 if (dropTargetLayout == null && mInScrollArea) { 2261 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2262 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2263 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2264 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2265 } 2266 } 2267 2268 if (dropTargetLayout != null) { 2269 // Move internally 2270 mTargetCell = findNearestVacantArea(originX, originY, 2271 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 2272 mTargetCell); 2273 2274 final int screen = (mTargetCell == null) ? 2275 mDragInfo.screen : indexOfChild(dropTargetLayout); 2276 2277 if (screen != mCurrentPage) { 2278 snapToPage(screen); 2279 } 2280 2281 if (mTargetCell != null) { 2282 if (screen != mDragInfo.screen) { 2283 // Reparent the view 2284 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2285 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2286 mDragInfo.spanX, mDragInfo.spanY); 2287 } 2288 2289 // update the item's position after drop 2290 final ItemInfo info = (ItemInfo) cell.getTag(); 2291 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2292 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2293 lp.cellX = mTargetCell[0]; 2294 lp.cellY = mTargetCell[1]; 2295 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2296 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2297 2298 if (cell instanceof LauncherAppWidgetHostView) { 2299 final CellLayoutChildren children = dropTargetLayout.getChildrenLayout(); 2300 final CellLayout cellLayout = dropTargetLayout; 2301 // We post this call so that the widget has a chance to be placed 2302 // in its final location 2303 2304 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2305 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2306 if (pinfo.resizableMode != AppWidgetProviderInfo.RESIZE_NONE) { 2307 post(new Runnable() { 2308 public void run() { 2309 children.addResizeFrame(info, hostView, 2310 cellLayout); 2311 } 2312 }); 2313 } 2314 } 2315 2316 LauncherModel.moveItemInDatabase(mLauncher, info, 2317 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2318 lp.cellX, lp.cellY); 2319 } 2320 } 2321 2322 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2323 2324 // Prepare it to be animated into its new position 2325 // This must be called after the view has been re-parented 2326 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 2327 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2328 parent.onDropChild(cell, animateDrop); 2329 } 2330 } 2331 2332 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2333 int yOffset, DragView dragView, Object dragInfo) { 2334 mDragTargetLayout = null; // Reset the drag state 2335 2336 if (!mIsSmall) { 2337 mDragTargetLayout = getCurrentDropLayout(); 2338 mDragTargetLayout.onDragEnter(); 2339 showOutlines(); 2340 } 2341 } 2342 2343 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2344 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2345 2346 if (mIsSmall || mIsInUnshrinkAnimation) { 2347 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2348 return null; 2349 } 2350 // We may need to delegate the drag to a child view. If a 1x1 item 2351 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2352 // then drag events should be handled by that child. 2353 2354 ItemInfo item = (ItemInfo) dragInfo; 2355 CellLayout currentLayout = getCurrentDropLayout(); 2356 2357 int dragPointX, dragPointY; 2358 if (item.spanX == 1 && item.spanY == 1) { 2359 // For a 1x1, calculate the drop cell exactly as in onDragOver 2360 dragPointX = x - xOffset; 2361 dragPointY = y - yOffset; 2362 } else { 2363 // Otherwise, use the exact drag coordinates 2364 dragPointX = x; 2365 dragPointY = y; 2366 } 2367 dragPointX += mScrollX - currentLayout.getLeft(); 2368 dragPointY += mScrollY - currentLayout.getTop(); 2369 2370 // If we are dragging over a cell that contains a DropTarget that will 2371 // accept the drop, delegate to that DropTarget. 2372 final int[] cellXY = mTempCell; 2373 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2374 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2375 if (child instanceof DropTarget) { 2376 DropTarget target = (DropTarget)child; 2377 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2378 return target; 2379 } 2380 } 2381 return null; 2382 } 2383 2384 /** 2385 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2386 * in the returned structure related to the widgets that match the drop (or a null list if it is 2387 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2388 */ 2389 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2390 final LauncherModel model = mLauncher.getModel(); 2391 final ClipDescription desc = event.getClipDescription(); 2392 final int mimeTypeCount = desc.getMimeTypeCount(); 2393 for (int i = 0; i < mimeTypeCount; ++i) { 2394 final String mimeType = desc.getMimeType(i); 2395 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2396 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2397 } else { 2398 final List<WidgetMimeTypeHandlerData> widgets = 2399 model.resolveWidgetsForMimeType(mContext, mimeType); 2400 if (widgets.size() > 0) { 2401 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2402 } 2403 } 2404 } 2405 return null; 2406 } 2407 2408 /** 2409 * Global drag and drop handler 2410 */ 2411 @Override 2412 public boolean onDragEvent(DragEvent event) { 2413 final ClipDescription desc = event.getClipDescription(); 2414 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2415 final int[] pos = new int[2]; 2416 layout.getLocationOnScreen(pos); 2417 // We need to offset the drag coordinates to layout coordinate space 2418 final int x = (int) event.getX() - pos[0]; 2419 final int y = (int) event.getY() - pos[1]; 2420 2421 switch (event.getAction()) { 2422 case DragEvent.ACTION_DRAG_STARTED: { 2423 // Validate this drag 2424 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2425 if (test != null) { 2426 boolean isShortcut = (test.second == null); 2427 if (isShortcut) { 2428 // Check if we have enough space on this screen to add a new shortcut 2429 if (!layout.findCellForSpan(pos, 1, 1)) { 2430 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2431 Toast.LENGTH_SHORT).show(); 2432 return false; 2433 } 2434 } 2435 } else { 2436 // Show error message if we couldn't accept any of the items 2437 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2438 Toast.LENGTH_SHORT).show(); 2439 return false; 2440 } 2441 2442 // Create the drag outline 2443 // We need to add extra padding to the bitmap to make room for the glow effect 2444 final Canvas canvas = new Canvas(); 2445 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2446 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2447 2448 // Show the current page outlines to indicate that we can accept this drop 2449 showOutlines(); 2450 layout.setIsDragOccuring(true); 2451 layout.onDragEnter(); 2452 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2453 2454 return true; 2455 } 2456 case DragEvent.ACTION_DRAG_LOCATION: 2457 // Visualize the drop location 2458 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2459 return true; 2460 case DragEvent.ACTION_DROP: { 2461 // Try and add any shortcuts 2462 final LauncherModel model = mLauncher.getModel(); 2463 final ClipData data = event.getClipData(); 2464 2465 // We assume that the mime types are ordered in descending importance of 2466 // representation. So we enumerate the list of mime types and alert the 2467 // user if any widgets can handle the drop. Only the most preferred 2468 // representation will be handled. 2469 pos[0] = x; 2470 pos[1] = y; 2471 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2472 if (test != null) { 2473 final int index = test.first; 2474 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2475 final boolean isShortcut = (widgets == null); 2476 final String mimeType = desc.getMimeType(index); 2477 if (isShortcut) { 2478 final Intent intent = data.getItemAt(index).getIntent(); 2479 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2480 onDropExternal(new int[] { x, y }, info, layout, false); 2481 } else { 2482 if (widgets.size() == 1) { 2483 // If there is only one item, then go ahead and add and configure 2484 // that widget 2485 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2486 final PendingAddWidgetInfo createInfo = 2487 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2488 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2489 } else { 2490 // Show the widget picker dialog if there is more than one widget 2491 // that can handle this data type 2492 final InstallWidgetReceiver.WidgetListAdapter adapter = 2493 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2494 data, widgets, layout, mCurrentPage, pos); 2495 final AlertDialog.Builder builder = 2496 new AlertDialog.Builder(mContext); 2497 builder.setAdapter(adapter, adapter); 2498 builder.setCancelable(true); 2499 builder.setTitle(mContext.getString( 2500 R.string.external_drop_widget_pick_title)); 2501 builder.setIcon(R.drawable.ic_no_applications); 2502 builder.show(); 2503 } 2504 } 2505 } 2506 return true; 2507 } 2508 case DragEvent.ACTION_DRAG_ENDED: 2509 // Hide the page outlines after the drop 2510 layout.setIsDragOccuring(false); 2511 layout.onDragExit(); 2512 hideOutlines(); 2513 return true; 2514 } 2515 return super.onDragEvent(event); 2516 } 2517 2518 /* 2519 * 2520 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2521 * coordinate space. The argument xy is modified with the return result. 2522 * 2523 */ 2524 void mapPointFromSelfToChild(View v, float[] xy) { 2525 mapPointFromSelfToChild(v, xy, null); 2526 } 2527 2528 /* 2529 * 2530 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2531 * coordinate space. The argument xy is modified with the return result. 2532 * 2533 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2534 * computing it itself; we use this to avoid redundant matrix inversions in 2535 * findMatchingPageForDragOver 2536 * 2537 */ 2538 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2539 if (cachedInverseMatrix == null) { 2540 v.getMatrix().invert(mTempInverseMatrix); 2541 cachedInverseMatrix = mTempInverseMatrix; 2542 } 2543 xy[0] = xy[0] + mScrollX - v.getLeft(); 2544 xy[1] = xy[1] + mScrollY - v.getTop(); 2545 cachedInverseMatrix.mapPoints(xy); 2546 } 2547 2548 /* 2549 * 2550 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2551 * the parent View's coordinate space. The argument xy is modified with the return result. 2552 * 2553 */ 2554 void mapPointFromChildToSelf(View v, float[] xy) { 2555 v.getMatrix().mapPoints(xy); 2556 xy[0] -= (mScrollX - v.getLeft()); 2557 xy[1] -= (mScrollY - v.getTop()); 2558 } 2559 2560 static private float squaredDistance(float[] point1, float[] point2) { 2561 float distanceX = point1[0] - point2[0]; 2562 float distanceY = point2[1] - point2[1]; 2563 return distanceX * distanceX + distanceY * distanceY; 2564 } 2565 2566 /* 2567 * 2568 * Returns true if the passed CellLayout cl overlaps with dragView 2569 * 2570 */ 2571 boolean overlaps(CellLayout cl, DragView dragView, 2572 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2573 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2574 final float[] draggedItemTopLeft = mTempDragCoordinates; 2575 draggedItemTopLeft[0] = dragViewX; 2576 draggedItemTopLeft[1] = dragViewY; 2577 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2578 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2579 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2580 2581 // Transform the dragged item's top left coordinates 2582 // to the CellLayout's local coordinates 2583 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2584 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2585 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2586 2587 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2588 // Transform the dragged item's bottom right coordinates 2589 // to the CellLayout's local coordinates 2590 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2591 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2592 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2593 2594 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2595 float overlap = (overlapRegionRight - overlapRegionLeft) * 2596 (overlapRegionBottom - overlapRegionTop); 2597 if (overlap > 0) { 2598 return true; 2599 } 2600 } 2601 } 2602 return false; 2603 } 2604 2605 /* 2606 * 2607 * This method returns the CellLayout that is currently being dragged to. In order to drag 2608 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2609 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2610 * 2611 * Return null if no CellLayout is currently being dragged over 2612 * 2613 */ 2614 private CellLayout findMatchingPageForDragOver( 2615 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2616 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2617 // with the item being dragged and then choose the one that's closest to the touch point 2618 final int screenCount = getChildCount(); 2619 CellLayout bestMatchingScreen = null; 2620 float smallestDistSoFar = Float.MAX_VALUE; 2621 2622 for (int i = 0; i < screenCount; i++) { 2623 CellLayout cl = (CellLayout)getChildAt(i); 2624 2625 final float[] touchXy = mTempTouchCoordinates; 2626 touchXy[0] = originX + offsetX; 2627 touchXy[1] = originY + offsetY; 2628 2629 // Transform the touch coordinates to the CellLayout's local coordinates 2630 // If the touch point is within the bounds of the cell layout, we can return immediately 2631 cl.getMatrix().invert(mTempInverseMatrix); 2632 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2633 2634 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2635 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2636 return cl; 2637 } 2638 2639 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2640 // Get the center of the cell layout in screen coordinates 2641 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2642 cellLayoutCenter[0] = cl.getWidth()/2; 2643 cellLayoutCenter[1] = cl.getHeight()/2; 2644 mapPointFromChildToSelf(cl, cellLayoutCenter); 2645 2646 touchXy[0] = originX + offsetX; 2647 touchXy[1] = originY + offsetY; 2648 2649 // Calculate the distance between the center of the CellLayout 2650 // and the touch point 2651 float dist = squaredDistance(touchXy, cellLayoutCenter); 2652 2653 if (dist < smallestDistSoFar) { 2654 smallestDistSoFar = dist; 2655 bestMatchingScreen = cl; 2656 } 2657 } 2658 } 2659 return bestMatchingScreen; 2660 } 2661 2662 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2663 DragView dragView, Object dragInfo) { 2664 // When touch is inside the scroll area, skip dragOver actions for the current screen 2665 if (!mInScrollArea) { 2666 CellLayout layout; 2667 int originX = x - xOffset; 2668 int originY = y - yOffset; 2669 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2670 if (shrunken) { 2671 mLastDragView = dragView; 2672 mLastDragOriginX = originX; 2673 mLastDragOriginY = originY; 2674 mLastDragXOffset = xOffset; 2675 mLastDragYOffset = yOffset; 2676 layout = findMatchingPageForDragOver(dragView, originX, originY, xOffset, yOffset); 2677 2678 if (layout != mDragTargetLayout) { 2679 if (mDragTargetLayout != null) { 2680 mDragTargetLayout.setIsDragOverlapping(false); 2681 mSpringLoadedDragController.onDragExit(); 2682 } 2683 mDragTargetLayout = layout; 2684 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2685 mDragTargetLayout.setIsDragOverlapping(true); 2686 mSpringLoadedDragController.onDragEnter( 2687 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2688 } 2689 } 2690 } else { 2691 layout = getCurrentDropLayout(); 2692 if (layout != mDragTargetLayout) { 2693 if (mDragTargetLayout != null) { 2694 mDragTargetLayout.onDragExit(); 2695 } 2696 layout.onDragEnter(); 2697 mDragTargetLayout = layout; 2698 } 2699 } 2700 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2701 layout = getCurrentDropLayout(); 2702 2703 final ItemInfo item = (ItemInfo)dragInfo; 2704 if (dragInfo instanceof LauncherAppWidgetInfo) { 2705 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2706 2707 if (widgetInfo.spanX == -1) { 2708 // Calculate the grid spans needed to fit this widget 2709 int[] spans = layout.rectToCell( 2710 widgetInfo.minWidth, widgetInfo.minHeight, null); 2711 item.spanX = spans[0]; 2712 item.spanY = spans[1]; 2713 } 2714 } 2715 2716 if (source instanceof AllAppsPagedView) { 2717 // This is a hack to fix the point used to determine which cell an icon from 2718 // the all apps screen is over 2719 if (item != null && item.spanX == 1 && layout != null) { 2720 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2721 2722 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2723 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2724 dragView.setDragRegion(dragView.getDragRegionLeft(), 2725 dragView.getDragRegionTop(), 2726 layout.getCellWidth(), 2727 dragView.getDragRegionHeight()); 2728 } 2729 } 2730 } else if (source == this) { 2731 // When dragging from the workspace, the drag view is slightly bigger than 2732 // the original view, and offset vertically. Adjust to account for this. 2733 final View origView = mDragInfo.cell; 2734 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2735 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2736 + dragView.getOffsetY(); 2737 } 2738 2739 if (mDragTargetLayout != null) { 2740 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2741 float[] localOrigin = { originX, originY }; 2742 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2743 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2744 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2745 } 2746 } 2747 } 2748 } 2749 2750 private void doDragExit() { 2751 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2752 if (mDragTargetLayout != null) { 2753 mDragTargetLayout.onDragExit(); 2754 } 2755 if (!mIsPageMoving) { 2756 hideOutlines(); 2757 } 2758 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2759 mLauncher.exitSpringLoadedDragMode(); 2760 } 2761 clearAllHovers(); 2762 } 2763 2764 public void onDragExit(DragSource source, int x, int y, int xOffset, 2765 int yOffset, DragView dragView, Object dragInfo) { 2766 doDragExit(); 2767 } 2768 2769 @Override 2770 public void getHitRect(Rect outRect) { 2771 // We want the workspace to have the whole area of the display (it will find the correct 2772 // cell layout to drop to in the existing drag/drop logic. 2773 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2774 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2775 } 2776 2777 /** 2778 * Add the item specified by dragInfo to the given layout. 2779 * @return true if successful 2780 */ 2781 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2782 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2783 onDropExternal(null, (ItemInfo) dragInfo, (CellLayout) layout, false); 2784 return true; 2785 } 2786 mLauncher.showOutOfSpaceMessage(); 2787 return false; 2788 } 2789 2790 /** 2791 * Drop an item that didn't originate on one of the workspace screens. 2792 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2793 * come from another app altogether. 2794 * 2795 * NOTE: This can also be called when we are outside of a drag event, when we want 2796 * to add an item to one of the workspace screens. 2797 */ 2798 private void onDropExternal(int[] touchXY, Object dragInfo, 2799 CellLayout cellLayout, boolean insertAtFirst) { 2800 int screen = indexOfChild(cellLayout); 2801 if (dragInfo instanceof PendingAddItemInfo) { 2802 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2803 // When dragging and dropping from customization tray, we deal with creating 2804 // widgets/shortcuts/folders in a slightly different way 2805 switch (info.itemType) { 2806 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2807 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2808 break; 2809 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2810 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2811 break; 2812 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2813 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2814 break; 2815 default: 2816 throw new IllegalStateException("Unknown item type: " + info.itemType); 2817 } 2818 cellLayout.onDragExit(); 2819 } else { 2820 // This is for other drag/drop cases, like dragging from All Apps 2821 ItemInfo info = (ItemInfo) dragInfo; 2822 View view = null; 2823 2824 switch (info.itemType) { 2825 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2826 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2827 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2828 // Came from all apps -- make a copy 2829 info = new ShortcutInfo((ApplicationInfo) info); 2830 } 2831 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2832 (ShortcutInfo) info); 2833 break; 2834 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2835 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2836 cellLayout, (UserFolderInfo) info, mIconCache); 2837 break; 2838 default: 2839 throw new IllegalStateException("Unknown item type: " + info.itemType); 2840 } 2841 2842 mTargetCell = new int[2]; 2843 if (touchXY != null) { 2844 // when dragging and dropping, just find the closest free spot 2845 cellLayout.findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, mTargetCell); 2846 } else { 2847 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2848 } 2849 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2850 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2851 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2852 cellLayout.onDropChild(view, animateDrop); 2853 cellLayout.animateDrop(); 2854 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2855 2856 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2857 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2858 lp.cellX, lp.cellY); 2859 } 2860 } 2861 2862 /** 2863 * Return the current {@link CellLayout}, correctly picking the destination 2864 * screen while a scroll is in progress. 2865 */ 2866 public CellLayout getCurrentDropLayout() { 2867 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2868 } 2869 2870 /** 2871 * Return the current CellInfo describing our current drag; this method exists 2872 * so that Launcher can sync this object with the correct info when the activity is created/ 2873 * destroyed 2874 * 2875 */ 2876 public CellLayout.CellInfo getDragInfo() { 2877 return mDragInfo; 2878 } 2879 2880 /** 2881 * Calculate the nearest cell where the given object would be dropped. 2882 */ 2883 private int[] findNearestVacantArea(int pixelX, int pixelY, 2884 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2885 2886 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2887 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2888 2889 // Find the best target drop location 2890 return layout.findNearestVacantArea( 2891 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2892 } 2893 2894 void setLauncher(Launcher launcher) { 2895 mLauncher = launcher; 2896 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2897 2898 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2899 if (mCustomizationDrawer != null) { 2900 mCustomizationDrawerContent = 2901 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2902 } 2903 } 2904 2905 public void setDragController(DragController dragController) { 2906 mDragController = dragController; 2907 } 2908 2909 /** 2910 * Called at the end of a drag which originated on the workspace. 2911 */ 2912 public void onDropCompleted(View target, Object dragInfo, boolean success) { 2913 if (success) { 2914 if (target != this && mDragInfo != null) { 2915 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2916 cellLayout.removeView(mDragInfo.cell); 2917 if (mDragInfo.cell instanceof DropTarget) { 2918 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2919 } 2920 // final Object tag = mDragInfo.cell.getTag(); 2921 } 2922 } else if (mDragInfo != null) { 2923 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2924 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2925 // moved into DragController.cancelDrag(). 2926 doDragExit(); 2927 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 2928 } 2929 mLauncher.unlockScreenOrientation(); 2930 mDragOutline = null; 2931 mDragInfo = null; 2932 } 2933 2934 @Override 2935 public void onDragViewVisible() { 2936 ((View) mDragInfo.cell).setVisibility(View.GONE); 2937 } 2938 2939 public boolean isDropEnabled() { 2940 return true; 2941 } 2942 2943 @Override 2944 protected void onRestoreInstanceState(Parcelable state) { 2945 super.onRestoreInstanceState(state); 2946 Launcher.setScreen(mCurrentPage); 2947 } 2948 2949 @Override 2950 public void scrollLeft() { 2951 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2952 super.scrollLeft(); 2953 } 2954 } 2955 2956 @Override 2957 public void scrollRight() { 2958 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2959 super.scrollRight(); 2960 } 2961 } 2962 2963 @Override 2964 public void onEnterScrollArea(int direction) { 2965 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2966 mInScrollArea = true; 2967 mPendingScrollDirection = direction; 2968 2969 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2970 final CellLayout layout = (CellLayout) getChildAt(page); 2971 2972 if (layout != null) { 2973 layout.setIsDragOverlapping(true); 2974 2975 if (mDragTargetLayout != null) { 2976 mDragTargetLayout.onDragExit(); 2977 mDragTargetLayout = null; 2978 } 2979 // In portrait, need to redraw the edge glow when entering the scroll area 2980 if (getHeight() > getWidth()) { 2981 invalidate(); 2982 } 2983 } 2984 } 2985 } 2986 2987 private void clearAllHovers() { 2988 final int childCount = getChildCount(); 2989 for (int i = 0; i < childCount; i++) { 2990 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2991 } 2992 mSpringLoadedDragController.onDragExit(); 2993 2994 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 2995 // so we need to redraw the workspace when this may have changed. 2996 if (getHeight() > getWidth()) { 2997 invalidate(); 2998 } 2999 } 3000 3001 @Override 3002 public void onExitScrollArea() { 3003 if (mInScrollArea) { 3004 mInScrollArea = false; 3005 mPendingScrollDirection = DragController.SCROLL_NONE; 3006 clearAllHovers(); 3007 } 3008 } 3009 3010 public Folder getFolderForTag(Object tag) { 3011 final int screenCount = getChildCount(); 3012 for (int screen = 0; screen < screenCount; screen++) { 3013 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3014 int count = currentScreen.getChildCount(); 3015 for (int i = 0; i < count; i++) { 3016 View child = currentScreen.getChildAt(i); 3017 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3018 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3019 Folder f = (Folder) child; 3020 if (f.getInfo() == tag && f.getInfo().opened) { 3021 return f; 3022 } 3023 } 3024 } 3025 } 3026 return null; 3027 } 3028 3029 public View getViewForTag(Object tag) { 3030 int screenCount = getChildCount(); 3031 for (int screen = 0; screen < screenCount; screen++) { 3032 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3033 int count = currentScreen.getChildCount(); 3034 for (int i = 0; i < count; i++) { 3035 View child = currentScreen.getChildAt(i); 3036 if (child.getTag() == tag) { 3037 return child; 3038 } 3039 } 3040 } 3041 return null; 3042 } 3043 3044 3045 void removeItems(final ArrayList<ApplicationInfo> apps) { 3046 final int screenCount = getChildCount(); 3047 final PackageManager manager = getContext().getPackageManager(); 3048 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3049 3050 final HashSet<String> packageNames = new HashSet<String>(); 3051 final int appCount = apps.size(); 3052 for (int i = 0; i < appCount; i++) { 3053 packageNames.add(apps.get(i).componentName.getPackageName()); 3054 } 3055 3056 for (int i = 0; i < screenCount; i++) { 3057 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3058 final ViewGroup layout = layoutParent.getChildrenLayout(); 3059 3060 // Avoid ANRs by treating each screen separately 3061 post(new Runnable() { 3062 public void run() { 3063 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3064 childrenToRemove.clear(); 3065 3066 int childCount = layout.getChildCount(); 3067 for (int j = 0; j < childCount; j++) { 3068 final View view = layout.getChildAt(j); 3069 Object tag = view.getTag(); 3070 3071 if (tag instanceof ShortcutInfo) { 3072 final ShortcutInfo info = (ShortcutInfo) tag; 3073 final Intent intent = info.intent; 3074 final ComponentName name = intent.getComponent(); 3075 3076 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3077 for (String packageName: packageNames) { 3078 if (packageName.equals(name.getPackageName())) { 3079 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3080 childrenToRemove.add(view); 3081 } 3082 } 3083 } 3084 } else if (tag instanceof UserFolderInfo) { 3085 final UserFolderInfo info = (UserFolderInfo) tag; 3086 final ArrayList<ShortcutInfo> contents = info.contents; 3087 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3088 final int contentsCount = contents.size(); 3089 boolean removedFromFolder = false; 3090 3091 for (int k = 0; k < contentsCount; k++) { 3092 final ShortcutInfo appInfo = contents.get(k); 3093 final Intent intent = appInfo.intent; 3094 final ComponentName name = intent.getComponent(); 3095 3096 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3097 for (String packageName: packageNames) { 3098 if (packageName.equals(name.getPackageName())) { 3099 toRemove.add(appInfo); 3100 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3101 removedFromFolder = true; 3102 } 3103 } 3104 } 3105 } 3106 3107 contents.removeAll(toRemove); 3108 if (removedFromFolder) { 3109 final Folder folder = getOpenFolder(); 3110 if (folder != null) 3111 folder.notifyDataSetChanged(); 3112 } 3113 } else if (tag instanceof LiveFolderInfo) { 3114 final LiveFolderInfo info = (LiveFolderInfo) tag; 3115 final Uri uri = info.uri; 3116 final ProviderInfo providerInfo = manager.resolveContentProvider( 3117 uri.getAuthority(), 0); 3118 3119 if (providerInfo != null) { 3120 for (String packageName: packageNames) { 3121 if (packageName.equals(providerInfo.packageName)) { 3122 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3123 childrenToRemove.add(view); 3124 } 3125 } 3126 } 3127 } else if (tag instanceof LauncherAppWidgetInfo) { 3128 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3129 final AppWidgetProviderInfo provider = 3130 widgets.getAppWidgetInfo(info.appWidgetId); 3131 if (provider != null) { 3132 for (String packageName: packageNames) { 3133 if (packageName.equals(provider.provider.getPackageName())) { 3134 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3135 childrenToRemove.add(view); 3136 } 3137 } 3138 } 3139 } 3140 } 3141 3142 childCount = childrenToRemove.size(); 3143 for (int j = 0; j < childCount; j++) { 3144 View child = childrenToRemove.get(j); 3145 // Note: We can not remove the view directly from CellLayoutChildren as this 3146 // does not re-mark the spaces as unoccupied. 3147 layoutParent.removeViewInLayout(child); 3148 if (child instanceof DropTarget) { 3149 mDragController.removeDropTarget((DropTarget)child); 3150 } 3151 } 3152 3153 if (childCount > 0) { 3154 layout.requestLayout(); 3155 layout.invalidate(); 3156 } 3157 } 3158 }); 3159 } 3160 } 3161 3162 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3163 final int screenCount = getChildCount(); 3164 for (int i = 0; i < screenCount; i++) { 3165 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3166 int childCount = layout.getChildCount(); 3167 for (int j = 0; j < childCount; j++) { 3168 final View view = layout.getChildAt(j); 3169 Object tag = view.getTag(); 3170 if (tag instanceof ShortcutInfo) { 3171 ShortcutInfo info = (ShortcutInfo)tag; 3172 // We need to check for ACTION_MAIN otherwise getComponent() might 3173 // return null for some shortcuts (for instance, for shortcuts to 3174 // web pages.) 3175 final Intent intent = info.intent; 3176 final ComponentName name = intent.getComponent(); 3177 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3178 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3179 final int appCount = apps.size(); 3180 for (int k = 0; k < appCount; k++) { 3181 ApplicationInfo app = apps.get(k); 3182 if (app.componentName.equals(name)) { 3183 info.setIcon(mIconCache.getIcon(info.intent)); 3184 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3185 new FastBitmapDrawable(info.getIcon(mIconCache)), 3186 null, null); 3187 } 3188 } 3189 } 3190 } 3191 } 3192 } 3193 } 3194 3195 void moveToDefaultScreen(boolean animate) { 3196 if (mIsSmall || mIsInUnshrinkAnimation) { 3197 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3198 } else if (animate) { 3199 snapToPage(mDefaultPage); 3200 } else { 3201 setCurrentPage(mDefaultPage); 3202 } 3203 getChildAt(mDefaultPage).requestFocus(); 3204 } 3205 3206 void setIndicators(Drawable previous, Drawable next) { 3207 mPreviousIndicator = previous; 3208 mNextIndicator = next; 3209 previous.setLevel(mCurrentPage); 3210 next.setLevel(mCurrentPage); 3211 } 3212 3213 @Override 3214 public void syncPages() { 3215 } 3216 3217 @Override 3218 public void syncPageItems(int page) { 3219 } 3220 3221} 3222