Workspace.java revision 70b9530f3147663d38875260b48d931793b7d378
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.PropertyValuesHolder; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Matrix; 48import android.graphics.Paint; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.IBinder; 55import android.os.Parcelable; 56import android.util.AttributeSet; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.ViewGroup; 64import android.view.animation.DecelerateInterpolator; 65import android.widget.TextView; 66import android.widget.Toast; 67 68import java.util.ArrayList; 69import java.util.HashSet; 70import java.util.List; 71 72/** 73 * The workspace is a wide area with a wallpaper and a finite number of pages. 74 * Each page contains a number of icons, folders or widgets the user can 75 * interact with. A workspace is meant to be used with a fixed width only. 76 */ 77public class Workspace extends SmoothPagedView 78 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 79 @SuppressWarnings({"UnusedDeclaration"}) 80 private static final String TAG = "Launcher.Workspace"; 81 82 // This is how much the workspace shrinks when we enter all apps or 83 // customization mode 84 private static final float SHRINK_FACTOR = 0.16f; 85 86 // How much the screens shrink when we enter spring loaded drag mode 87 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 88 89 // Y rotation to apply to the workspace screens 90 private static final float WORKSPACE_ROTATION = 12.5f; 91 92 // These are extra scale factors to apply to the mini home screens 93 // so as to achieve the desired transform 94 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 95 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 96 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 97 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 99 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 100 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 101 102 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 103 private static final int BACKGROUND_FADE_IN_DURATION = 350; 104 105 // These animators are used to fade the children's outlines 106 private ObjectAnimator mChildrenOutlineFadeInAnimation; 107 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 108 private float mChildrenOutlineAlpha = 0; 109 110 // These properties refer to the background protection gradient used for AllApps and Customize 111 private ValueAnimator mBackgroundFadeInAnimation; 112 private ValueAnimator mBackgroundFadeOutAnimation; 113 private Drawable mBackground; 114 private Drawable mCustomizeTrayBackground; 115 private boolean mDrawCustomizeTrayBackground; 116 private float mBackgroundAlpha = 0; 117 private float mOverScrollMaxBackgroundAlpha = 0.0f; 118 private int mOverScrollPageIndex = -1; 119 120 private View mCustomizationDrawer; 121 private View mCustomizationDrawerContent; 122 private int[] mCustomizationDrawerPos = new int[2]; 123 private float[] mCustomizationDrawerTransformedPos = new float[2]; 124 125 private final WallpaperManager mWallpaperManager; 126 127 private int mDefaultPage; 128 129 private boolean mIsDragInProcess = false; 130 131 /** 132 * CellInfo for the cell that is currently being dragged 133 */ 134 private CellLayout.CellInfo mDragInfo; 135 136 /** 137 * Target drop area calculated during last acceptDrop call. 138 */ 139 private int[] mTargetCell = null; 140 141 /** 142 * The CellLayout that is currently being dragged over 143 */ 144 private CellLayout mDragTargetLayout = null; 145 146 private Launcher mLauncher; 147 private IconCache mIconCache; 148 private DragController mDragController; 149 150 // These are temporary variables to prevent having to allocate a new object just to 151 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 152 private int[] mTempCell = new int[2]; 153 private int[] mTempEstimate = new int[2]; 154 private float[] mTempOriginXY = new float[2]; 155 private float[] mTempDragCoordinates = new float[2]; 156 private float[] mTempTouchCoordinates = new float[2]; 157 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 158 private float[] mTempDragBottomRightCoordinates = new float[2]; 159 private Matrix mTempInverseMatrix = new Matrix(); 160 161 private SpringLoadedDragController mSpringLoadedDragController; 162 163 private static final int DEFAULT_CELL_COUNT_X = 4; 164 private static final int DEFAULT_CELL_COUNT_Y = 4; 165 166 private Drawable mPreviousIndicator; 167 private Drawable mNextIndicator; 168 169 // State variable that indicates whether the pages are small (ie when you're 170 // in all apps or customize mode) 171 private boolean mIsSmall = false; 172 private boolean mIsInUnshrinkAnimation = false; 173 private AnimatorListener mShrinkAnimationListener; 174 private AnimatorListener mUnshrinkAnimationListener; 175 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 176 private ShrinkState mShrinkState; 177 private boolean mWasSpringLoadedOnDragExit = false; 178 private boolean mWaitingToShrink = false; 179 private ShrinkState mWaitingToShrinkState; 180 private AnimatorSet mAnimator; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 /** If mInScrollArea is true, the direction of the scroll. */ 186 private int mPendingScrollDirection = DragController.SCROLL_NONE; 187 188 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 189 private Bitmap mDragOutline = null; 190 private final Rect mTempRect = new Rect(); 191 private final int[] mTempXY = new int[2]; 192 193 private ValueAnimator mDropAnim = null; 194 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 195 private View mDropView = null; 196 private int[] mDropViewPos = new int[] { -1, -1 }; 197 198 // Paint used to draw external drop outline 199 private final Paint mExternalDragOutlinePaint = new Paint(); 200 201 // Camera and Matrix used to determine the final position of a neighboring CellLayout 202 private final Matrix mMatrix = new Matrix(); 203 private final Camera mCamera = new Camera(); 204 private final float mTempFloat2[] = new float[2]; 205 206 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 207 int mWallpaperWidth; 208 int mWallpaperHeight; 209 WallpaperOffsetInterpolator mWallpaperOffset; 210 boolean mUpdateWallpaperOffsetImmediately = false; 211 boolean mSyncWallpaperOffsetWithScroll = true; 212 213 // info about the last drag 214 private DragView mLastDragView; 215 private int mLastDragOriginX; 216 private int mLastDragOriginY; 217 private int mLastDragXOffset; 218 private int mLastDragYOffset; 219 220 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 221 private float mXDown; 222 private float mYDown; 223 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 224 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 225 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 226 227 int mSpringLoadedDropX; 228 int mSpringLoadedDropY; 229 230 /** 231 * Used to inflate the Workspace from XML. 232 * 233 * @param context The application's context. 234 * @param attrs The attributes set containing the Workspace's customization values. 235 */ 236 public Workspace(Context context, AttributeSet attrs) { 237 this(context, attrs, 0); 238 } 239 240 /** 241 * Used to inflate the Workspace from XML. 242 * 243 * @param context The application's context. 244 * @param attrs The attributes set containing the Workspace's customization values. 245 * @param defStyle Unused. 246 */ 247 public Workspace(Context context, AttributeSet attrs, int defStyle) { 248 super(context, attrs, defStyle); 249 mContentIsRefreshable = false; 250 251 if (!LauncherApplication.isScreenXLarge()) { 252 mFadeInAdjacentScreens = false; 253 } 254 255 mWallpaperManager = WallpaperManager.getInstance(context); 256 257 TypedArray a = context.obtainStyledAttributes(attrs, 258 R.styleable.Workspace, defStyle, 0); 259 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 260 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 261 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 262 a.recycle(); 263 264 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 265 setHapticFeedbackEnabled(false); 266 267 initWorkspace(); 268 } 269 270 /** 271 * Initializes various states for this workspace. 272 */ 273 protected void initWorkspace() { 274 Context context = getContext(); 275 mCurrentPage = mDefaultPage; 276 Launcher.setScreen(mCurrentPage); 277 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 278 mIconCache = app.getIconCache(); 279 mExternalDragOutlinePaint.setAntiAlias(true); 280 setWillNotDraw(false); 281 282 try { 283 final Resources res = getResources(); 284 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 285 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 286 } catch (Resources.NotFoundException e) { 287 // In this case, we will skip drawing background protection 288 } 289 290 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 291 @Override 292 public void onAnimationStart(Animator animation) { 293 mIsInUnshrinkAnimation = true; 294 } 295 296 @Override 297 public void onAnimationEnd(Animator animation) { 298 mIsInUnshrinkAnimation = false; 299 mSyncWallpaperOffsetWithScroll = true; 300 if (mShrinkState == ShrinkState.SPRING_LOADED) { 301 View layout = null; 302 if (mLastDragView != null) { 303 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 304 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 305 } 306 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 307 } else { 308 mDrawCustomizeTrayBackground = false; 309 } 310 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 311 mAnimator = null; 312 enableChildrenLayers(false); 313 } 314 }; 315 mShrinkAnimationListener = new AnimatorListenerAdapter() { 316 @Override 317 public void onAnimationStart(Animator animation) { 318 enableChildrenLayers(true); 319 } 320 @Override 321 public void onAnimationEnd(Animator animation) { 322 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 323 mAnimator = null; 324 } 325 }; 326 mSnapVelocity = 600; 327 mWallpaperOffset = new WallpaperOffsetInterpolator(); 328 } 329 330 @Override 331 protected int getScrollMode() { 332 if (LauncherApplication.isScreenXLarge()) { 333 return SmoothPagedView.X_LARGE_MODE; 334 } else { 335 return SmoothPagedView.DEFAULT_MODE; 336 } 337 } 338 339 @Override 340 public void addView(View child, int index, LayoutParams params) { 341 if (!(child instanceof CellLayout)) { 342 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 343 } 344 ((CellLayout) child).setOnInterceptTouchListener(this); 345 super.addView(child, index, params); 346 } 347 348 @Override 349 public void addView(View child) { 350 if (!(child instanceof CellLayout)) { 351 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 352 } 353 ((CellLayout) child).setOnInterceptTouchListener(this); 354 super.addView(child); 355 } 356 357 @Override 358 public void addView(View child, int index) { 359 if (!(child instanceof CellLayout)) { 360 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 361 } 362 ((CellLayout) child).setOnInterceptTouchListener(this); 363 super.addView(child, index); 364 } 365 366 @Override 367 public void addView(View child, int width, int height) { 368 if (!(child instanceof CellLayout)) { 369 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 370 } 371 ((CellLayout) child).setOnInterceptTouchListener(this); 372 super.addView(child, width, height); 373 } 374 375 @Override 376 public void addView(View child, LayoutParams params) { 377 if (!(child instanceof CellLayout)) { 378 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 379 } 380 ((CellLayout) child).setOnInterceptTouchListener(this); 381 super.addView(child, params); 382 } 383 384 /** 385 * @return The open folder on the current screen, or null if there is none 386 */ 387 Folder getOpenFolder() { 388 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 389 int count = currentPage.getChildCount(); 390 for (int i = 0; i < count; i++) { 391 View child = currentPage.getChildAt(i); 392 if (child instanceof Folder) { 393 Folder folder = (Folder) child; 394 if (folder.getInfo().opened) 395 return folder; 396 } 397 } 398 return null; 399 } 400 401 ArrayList<Folder> getOpenFolders() { 402 final int screenCount = getChildCount(); 403 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 404 405 for (int screen = 0; screen < screenCount; screen++) { 406 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 407 int count = currentPage.getChildCount(); 408 for (int i = 0; i < count; i++) { 409 View child = currentPage.getChildAt(i); 410 if (child instanceof Folder) { 411 Folder folder = (Folder) child; 412 if (folder.getInfo().opened) 413 folders.add(folder); 414 break; 415 } 416 } 417 } 418 return folders; 419 } 420 421 boolean isDefaultPageShowing() { 422 return mCurrentPage == mDefaultPage; 423 } 424 425 /** 426 * Adds the specified child in the specified screen. The position and dimension of 427 * the child are defined by x, y, spanX and spanY. 428 * 429 * @param child The child to add in one of the workspace's screens. 430 * @param screen The screen in which to add the child. 431 * @param x The X position of the child in the screen's grid. 432 * @param y The Y position of the child in the screen's grid. 433 * @param spanX The number of cells spanned horizontally by the child. 434 * @param spanY The number of cells spanned vertically by the child. 435 */ 436 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 437 addInScreen(child, screen, x, y, spanX, spanY, false); 438 } 439 440 void addInFullScreen(View child, int screen) { 441 addInScreen(child, screen, 0, 0, -1, -1); 442 } 443 444 /** 445 * Adds the specified child in the specified screen. The position and dimension of 446 * the child are defined by x, y, spanX and spanY. 447 * 448 * @param child The child to add in one of the workspace's screens. 449 * @param screen The screen in which to add the child. 450 * @param x The X position of the child in the screen's grid. 451 * @param y The Y position of the child in the screen's grid. 452 * @param spanX The number of cells spanned horizontally by the child. 453 * @param spanY The number of cells spanned vertically by the child. 454 * @param insert When true, the child is inserted at the beginning of the children list. 455 */ 456 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 457 if (screen < 0 || screen >= getChildCount()) { 458 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 459 + " (was " + screen + "); skipping child"); 460 return; 461 } 462 463 final CellLayout group = (CellLayout) getChildAt(screen); 464 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 465 if (lp == null) { 466 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 467 } else { 468 lp.cellX = x; 469 lp.cellY = y; 470 lp.cellHSpan = spanX; 471 lp.cellVSpan = spanY; 472 } 473 474 // Get the canonical child id to uniquely represent this view in this screen 475 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 476 boolean markCellsAsOccupied = !(child instanceof Folder); 477 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 478 // TODO: This branch occurs when the workspace is adding views 479 // outside of the defined grid 480 // maybe we should be deleting these items from the LauncherModel? 481 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 482 } 483 484 if (!(child instanceof Folder)) { 485 child.setHapticFeedbackEnabled(false); 486 child.setOnLongClickListener(mLongClickListener); 487 } 488 if (child instanceof DropTarget) { 489 mDragController.addDropTarget((DropTarget) child); 490 } 491 } 492 493 /** 494 * Check if the point (x, y) hits a given page. 495 */ 496 private boolean hitsPage(int index, float x, float y) { 497 final View page = getChildAt(index); 498 if (page != null) { 499 float[] localXY = { x, y }; 500 mapPointFromSelfToChild(page, localXY); 501 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 502 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 503 } 504 return false; 505 } 506 507 @Override 508 protected boolean hitsPreviousPage(float x, float y) { 509 // mNextPage is set to INVALID_PAGE whenever we are stationary. 510 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 511 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 512 return hitsPage(current - 1, x, y); 513 } 514 515 @Override 516 protected boolean hitsNextPage(float x, float y) { 517 // mNextPage is set to INVALID_PAGE whenever we are stationary. 518 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 519 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 520 return hitsPage(current + 1, x, y); 521 } 522 523 public boolean onTouch(View v, MotionEvent event) { 524 // this is an intercepted event being forwarded from a cell layout 525 if (mIsSmall || mIsInUnshrinkAnimation) { 526 // Only allow clicks on a CellLayout if it is visible 527 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 528 mLauncher.onWorkspaceClick((CellLayout) v); 529 } 530 return true; 531 } 532 return false; 533 } 534 535 protected void onWindowVisibilityChanged (int visibility) { 536 mLauncher.onWindowVisibilityChanged(visibility); 537 } 538 539 @Override 540 public boolean dispatchUnhandledMove(View focused, int direction) { 541 if (mIsSmall || mIsInUnshrinkAnimation) { 542 // when the home screens are shrunken, shouldn't allow side-scrolling 543 return false; 544 } 545 return super.dispatchUnhandledMove(focused, direction); 546 } 547 548 @Override 549 public boolean onInterceptTouchEvent(MotionEvent ev) { 550 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 551 mXDown = ev.getX(); 552 mYDown = ev.getY(); 553 } 554 555 if (mIsSmall || mIsInUnshrinkAnimation) { 556 if (mLauncher.isAllAppsVisible() && 557 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 558 // Intercept this event so we can show the workspace in full view 559 // when it is clicked on and it is small 560 AllAppsPagedView allApps = (AllAppsPagedView) 561 mLauncher.findViewById(R.id.all_apps_paged_view); 562 if (allApps != null) { 563 allApps.onInterceptTouchEvent(ev); 564 } 565 return true; 566 } 567 return false; 568 } 569 return super.onInterceptTouchEvent(ev); 570 } 571 572 @Override 573 protected void determineScrollingStart(MotionEvent ev) { 574 if (!mIsSmall && !mIsInUnshrinkAnimation) { 575 float deltaX = Math.abs(ev.getX() - mXDown); 576 float deltaY = Math.abs(ev.getY() - mYDown); 577 578 if (Float.compare(deltaX, 0f) == 0) return; 579 580 float slope = deltaY / deltaX; 581 float theta = (float) Math.atan(slope); 582 583 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 584 cancelCurrentPageLongPress(); 585 } 586 587 if (theta > MAX_SWIPE_ANGLE) { 588 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 589 return; 590 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 591 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 592 // increase the touch slop to make it harder to begin scrolling the workspace. This 593 // results in vertically scrolling widgets to more easily. The higher the angle, the 594 // more we increase touch slop. 595 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 596 float extraRatio = (float) 597 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 598 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 599 } else { 600 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 601 super.determineScrollingStart(ev); 602 } 603 } 604 } 605 606 protected void onPageBeginMoving() { 607 if (mNextPage != INVALID_PAGE) { 608 // we're snapping to a particular screen 609 enableChildrenCache(mCurrentPage, mNextPage); 610 } else { 611 // this is when user is actively dragging a particular screen, they might 612 // swipe it either left or right (but we won't advance by more than one screen) 613 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 614 } 615 showOutlines(); 616 } 617 618 protected void onPageEndMoving() { 619 clearChildrenCache(); 620 // Hide the outlines, as long as we're not dragging 621 if (!mDragController.dragging()) { 622 hideOutlines(); 623 } 624 mOverScrollMaxBackgroundAlpha = 0.0f; 625 mOverScrollPageIndex = -1; 626 } 627 628 @Override 629 protected void notifyPageSwitchListener() { 630 super.notifyPageSwitchListener(); 631 632 if (mPreviousIndicator != null) { 633 // if we know the next page, we show the indication for it right away; it looks 634 // weird if the indicators are lagging 635 int page = mNextPage; 636 if (page == INVALID_PAGE) { 637 page = mCurrentPage; 638 } 639 mPreviousIndicator.setLevel(page); 640 mNextIndicator.setLevel(page); 641 } 642 Launcher.setScreen(mCurrentPage); 643 }; 644 645 // As a ratio of screen height, the total distance we want the parallax effect to span 646 // vertically 647 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 648 return 1.1f; 649 } 650 651 // As a ratio of screen height, the total distance we want the parallax effect to span 652 // horizontally 653 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 654 float aspectRatio = width / (float) height; 655 656 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 657 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 658 // We will use these two data points to extrapolate how much the wallpaper parallax effect 659 // to span (ie travel) at any aspect ratio: 660 661 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 662 final float ASPECT_RATIO_PORTRAIT = 10/16f; 663 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 664 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 665 666 // To find out the desired width at different aspect ratios, we use the following two 667 // formulas, where the coefficient on x is the aspect ratio (width/height): 668 // (16/10)x + y = 1.5 669 // (10/16)x + y = 1.2 670 // We solve for x and y and end up with a final formula: 671 final float x = 672 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 673 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 674 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 675 return x * aspectRatio + y; 676 } 677 678 // The range of scroll values for Workspace 679 private int getScrollRange() { 680 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 681 } 682 683 protected void setWallpaperDimension() { 684 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 685 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 686 final int minDim = Math.min(display.getWidth(), display.getHeight()); 687 688 // We need to ensure that there is enough extra space in the wallpaper for the intended 689 // parallax effects 690 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 691 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 692 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 693 } 694 695 public void setVerticalWallpaperOffset(float offset) { 696 mWallpaperOffset.setFinalY(offset); 697 } 698 public float getVerticalWallpaperOffset() { 699 return mWallpaperOffset.getCurrY(); 700 } 701 public void setHorizontalWallpaperOffset(float offset) { 702 mWallpaperOffset.setFinalX(offset); 703 } 704 public float getHorizontalWallpaperOffset() { 705 return mWallpaperOffset.getCurrX(); 706 } 707 708 private float wallpaperOffsetForCurrentScroll() { 709 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 710 // The wallpaper travel width is how far, from left to right, the wallpaper will move 711 // at this orientation (for example, in portrait mode we don't move all the way to the 712 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 713 int wallpaperTravelWidth = (int) (display.getWidth() * 714 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 715 716 // Set wallpaper offset steps (1 / (number of screens - 1)) 717 // We have 3 vertical offset states (centered, and then top/bottom aligned 718 // for all apps/customize) 719 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 720 721 int scrollRange = getScrollRange(); 722 float scrollProgressOffset = 0; 723 724 // Account for overscroll: you only see the absolute edge of the wallpaper if 725 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 726 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 727 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 728 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 729 if (isStaticWallpaper) { 730 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 731 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 732 scrollRange += 2 * overscrollOffset; 733 } 734 735 float scrollProgress = 736 mScrollX / (float) scrollRange + scrollProgressOffset; 737 float offsetInDips = wallpaperTravelWidth * scrollProgress + 738 (mWallpaperWidth - wallpaperTravelWidth) / 2; 739 float offset = offsetInDips / (float) mWallpaperWidth; 740 return offset; 741 } 742 private void syncWallpaperOffsetWithScroll() { 743 if (LauncherApplication.isScreenXLarge()) { 744 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 745 } 746 } 747 748 public void updateWallpaperOffsetImmediately() { 749 mUpdateWallpaperOffsetImmediately = true; 750 } 751 752 private void updateWallpaperOffsets() { 753 boolean updateNow = false; 754 boolean keepUpdating = true; 755 if (mUpdateWallpaperOffsetImmediately) { 756 updateNow = true; 757 keepUpdating = false; 758 mWallpaperOffset.jumpToFinal(); 759 mUpdateWallpaperOffsetImmediately = false; 760 } else { 761 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 762 } 763 if (updateNow) { 764 IBinder token = getWindowToken(); 765 if (token != null) { 766 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 767 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 768 } 769 } 770 if (keepUpdating) { 771 invalidate(); 772 } 773 } 774 775 class WallpaperOffsetInterpolator { 776 float mFinalHorizontalWallpaperOffset = 0.0f; 777 float mFinalVerticalWallpaperOffset = 0.5f; 778 float mHorizontalWallpaperOffset = 0.0f; 779 float mVerticalWallpaperOffset = 0.5f; 780 long mLastWallpaperOffsetUpdateTime; 781 boolean mIsMovingFast; 782 boolean mOverrideHorizontalCatchupConstant; 783 float mHorizontalCatchupConstant = 0.35f; 784 float mVerticalCatchupConstant = 0.35f; 785 786 public WallpaperOffsetInterpolator() { 787 } 788 789 public void setOverrideHorizontalCatchupConstant(boolean override) { 790 mOverrideHorizontalCatchupConstant = override; 791 } 792 793 public void setHorizontalCatchupConstant(float f) { 794 mHorizontalCatchupConstant = f; 795 } 796 797 public void setVerticalCatchupConstant(float f) { 798 mVerticalCatchupConstant = f; 799 } 800 801 public boolean computeScrollOffset() { 802 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 803 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 804 mIsMovingFast = false; 805 return false; 806 } 807 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 808 boolean isLandscape = display.getWidth() > display.getHeight(); 809 810 long currentTime = System.currentTimeMillis(); 811 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 812 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 813 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 814 815 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 816 if (!mIsMovingFast && xdiff > 0.07) { 817 mIsMovingFast = true; 818 } 819 820 float fractionToCatchUpIn1MsHorizontal; 821 if (mOverrideHorizontalCatchupConstant) { 822 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 823 } else if (mIsMovingFast) { 824 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 825 } else { 826 // slow 827 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 828 } 829 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 830 831 832 fractionToCatchUpIn1MsHorizontal /= 33f; 833 fractionToCatchUpIn1MsVertical /= 33f; 834 835 final float UPDATE_THRESHOLD = 0.00001f; 836 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 837 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 838 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 839 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 840 if (jumpToFinalValue) { 841 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 842 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 843 } else { 844 float percentToCatchUpVertical = 845 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 846 float percentToCatchUpHorizontal = 847 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 848 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 849 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 850 } 851 852 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 853 return true; 854 } 855 856 public float getCurrX() { 857 return mHorizontalWallpaperOffset; 858 } 859 860 public float getFinalX() { 861 return mFinalHorizontalWallpaperOffset; 862 } 863 864 public float getCurrY() { 865 return mVerticalWallpaperOffset; 866 } 867 868 public float getFinalY() { 869 return mFinalVerticalWallpaperOffset; 870 } 871 872 public void setFinalX(float x) { 873 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 874 } 875 876 public void setFinalY(float y) { 877 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 878 } 879 880 public void jumpToFinal() { 881 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 882 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 883 } 884 } 885 886 @Override 887 public void computeScroll() { 888 super.computeScroll(); 889 if (mSyncWallpaperOffsetWithScroll) { 890 syncWallpaperOffsetWithScroll(); 891 } 892 } 893 894 public void showOutlines() { 895 if (!mIsSmall && !mIsInUnshrinkAnimation) { 896 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 897 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 898 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 899 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 900 mChildrenOutlineFadeInAnimation.start(); 901 } 902 } 903 904 public void hideOutlines() { 905 if (!mIsSmall && !mIsInUnshrinkAnimation) { 906 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 907 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 908 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 909 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 910 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 911 mChildrenOutlineFadeOutAnimation.start(); 912 } 913 } 914 915 public void setChildrenOutlineAlpha(float alpha) { 916 mChildrenOutlineAlpha = alpha; 917 for (int i = 0; i < getChildCount(); i++) { 918 CellLayout cl = (CellLayout) getChildAt(i); 919 cl.setBackgroundAlpha(alpha); 920 } 921 } 922 923 public float getChildrenOutlineAlpha() { 924 return mChildrenOutlineAlpha; 925 } 926 927 private void showBackgroundGradientForAllApps() { 928 showBackgroundGradient(); 929 mDrawCustomizeTrayBackground = false; 930 } 931 932 private void showBackgroundGradientForCustomizeTray() { 933 showBackgroundGradient(); 934 mDrawCustomizeTrayBackground = true; 935 } 936 937 private void showBackgroundGradient() { 938 if (mBackground == null) return; 939 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 940 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 941 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 942 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 943 public void onAnimationUpdate(ValueAnimator animation) { 944 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 945 } 946 }); 947 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 948 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 949 mBackgroundFadeInAnimation.start(); 950 } 951 952 private void hideBackgroundGradient() { 953 if (mBackground == null) return; 954 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 955 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 956 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 957 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 958 public void onAnimationUpdate(ValueAnimator animation) { 959 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 960 } 961 }); 962 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 963 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 964 mBackgroundFadeOutAnimation.start(); 965 } 966 967 public void setBackgroundAlpha(float alpha) { 968 mBackgroundAlpha = alpha; 969 invalidate(); 970 } 971 972 public float getBackgroundAlpha() { 973 return mBackgroundAlpha; 974 } 975 976 /** 977 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 978 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 979 * as being larger. This method computes what offset the rotated view should be translated 980 * in order to minimize this perceived gap. 981 * @param degrees Angle of the view 982 * @param width Width of the view 983 * @param height Height of the view 984 * @return Offset to be used in a View.setTranslationX() call 985 */ 986 private float getOffsetXForRotation(float degrees, int width, int height) { 987 mMatrix.reset(); 988 mCamera.save(); 989 mCamera.rotateY(Math.abs(degrees)); 990 mCamera.getMatrix(mMatrix); 991 mCamera.restore(); 992 993 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 994 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 995 mTempFloat2[0] = width; 996 mTempFloat2[1] = height; 997 mMatrix.mapPoints(mTempFloat2); 998 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 999 } 1000 1001 float backgroundAlphaInterpolator(float r) { 1002 float pivotA = 0.1f; 1003 float pivotB = 0.4f; 1004 if (r < pivotA) { 1005 return 0; 1006 } else if (r > pivotB) { 1007 return 1.0f; 1008 } else { 1009 return (r - pivotA)/(pivotB - pivotA); 1010 } 1011 } 1012 1013 float overScrollBackgroundAlphaInterpolator(float r) { 1014 float threshold = 0.08f; 1015 1016 if (r > mOverScrollMaxBackgroundAlpha) { 1017 mOverScrollMaxBackgroundAlpha = r; 1018 } else if (r < mOverScrollMaxBackgroundAlpha) { 1019 r = mOverScrollMaxBackgroundAlpha; 1020 } 1021 1022 return Math.min(r / threshold, 1.0f); 1023 } 1024 1025 @Override 1026 protected void screenScrolled(int screenCenter) { 1027 final int halfScreenSize = getMeasuredWidth() / 2; 1028 1029 for (int i = 0; i < getChildCount(); i++) { 1030 CellLayout cl = (CellLayout) getChildAt(i); 1031 if (cl != null) { 1032 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1033 int delta = screenCenter - (getChildOffset(i) - 1034 getRelativeChildOffset(i) + halfScreenSize); 1035 1036 float scrollProgress = delta / (totalDistance * 1.0f); 1037 scrollProgress = Math.min(scrollProgress, 1.0f); 1038 scrollProgress = Math.max(scrollProgress, -1.0f); 1039 1040 // If the current page (i) is being overscrolled, we use a different 1041 // set of rules for setting the background alpha multiplier. 1042 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1043 i == getChildCount() -1 )) { 1044 cl.setBackgroundAlphaMultiplier( 1045 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1046 mOverScrollPageIndex = i; 1047 } else if (mOverScrollPageIndex != i) { 1048 cl.setBackgroundAlphaMultiplier( 1049 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1050 } 1051 1052 float rotation = WORKSPACE_ROTATION * scrollProgress; 1053 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1054 cl.setTranslationX(translationX); 1055 1056 cl.setRotationY(rotation); 1057 } 1058 } 1059 } 1060 1061 protected void onAttachedToWindow() { 1062 super.onAttachedToWindow(); 1063 computeScroll(); 1064 mDragController.setWindowToken(getWindowToken()); 1065 } 1066 1067 @Override 1068 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1069 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1070 mUpdateWallpaperOffsetImmediately = true; 1071 } 1072 super.onLayout(changed, left, top, right, bottom); 1073 1074 // if shrinkToBottom() is called on initialization, it has to be deferred 1075 // until after the first call to onLayout so that it has the correct width 1076 if (mWaitingToShrink) { 1077 // shrink can trigger a synchronous onLayout call, so we 1078 // post this to avoid a stack overflow / tangled onLayout calls 1079 post(new Runnable() { 1080 public void run() { 1081 shrink(mWaitingToShrinkState, false); 1082 mWaitingToShrink = false; 1083 } 1084 }); 1085 } 1086 1087 if (LauncherApplication.isInPlaceRotationEnabled()) { 1088 // When the device is rotated, the scroll position of the current screen 1089 // needs to be refreshed 1090 setCurrentPage(getCurrentPage()); 1091 } 1092 } 1093 1094 @Override 1095 protected void onDraw(Canvas canvas) { 1096 updateWallpaperOffsets(); 1097 1098 // Draw the background gradient if necessary 1099 if (mBackground != null && mBackgroundAlpha > 0.0f) { 1100 int alpha = (int) (mBackgroundAlpha * 255); 1101 if (mDrawCustomizeTrayBackground) { 1102 // Find out where to offset the gradient for the customization tray content 1103 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1104 final Matrix m = mCustomizationDrawer.getMatrix(); 1105 mCustomizationDrawerTransformedPos[0] = 0.0f; 1106 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1107 m.mapPoints(mCustomizationDrawerTransformedPos); 1108 1109 // Draw the bg glow behind the gradient 1110 mCustomizeTrayBackground.setAlpha(alpha); 1111 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1112 getMeasuredHeight()); 1113 mCustomizeTrayBackground.draw(canvas); 1114 1115 // Draw the bg gradient 1116 final int offset = (int) (mCustomizationDrawerPos[1] + 1117 mCustomizationDrawerTransformedPos[1]); 1118 mBackground.setAlpha(alpha); 1119 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1120 offset + getMeasuredHeight()); 1121 mBackground.draw(canvas); 1122 } else { 1123 mBackground.setAlpha(alpha); 1124 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1125 getMeasuredHeight()); 1126 mBackground.draw(canvas); 1127 } 1128 } 1129 super.onDraw(canvas); 1130 } 1131 1132 @Override 1133 protected void dispatchDraw(Canvas canvas) { 1134 if (mIsSmall || mIsInUnshrinkAnimation) { 1135 // Draw all the workspaces if we're small 1136 final int pageCount = getChildCount(); 1137 final long drawingTime = getDrawingTime(); 1138 for (int i = 0; i < pageCount; i++) { 1139 final View page = (View) getChildAt(i); 1140 1141 drawChild(canvas, page, drawingTime); 1142 } 1143 } else { 1144 super.dispatchDraw(canvas); 1145 1146 final int width = getWidth(); 1147 final int height = getHeight(); 1148 1149 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1150 if (mInScrollArea && (height > width)) { 1151 final int pageHeight = getChildAt(0).getHeight(); 1152 1153 // This determines the height of the glowing edge: 90% of the page height 1154 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1155 1156 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1157 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1158 1159 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1160 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1161 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1162 d.draw(canvas); 1163 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1164 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1165 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1166 d.draw(canvas); 1167 } 1168 } 1169 1170 if (mDropView != null) { 1171 // We are animating an item that was just dropped on the home screen. 1172 // Render its View in the current animation position. 1173 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1174 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1175 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1176 canvas.translate(xPos, yPos); 1177 mDropView.draw(canvas); 1178 canvas.restore(); 1179 } 1180 } 1181 } 1182 1183 @Override 1184 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1185 if (!mLauncher.isAllAppsVisible()) { 1186 final Folder openFolder = getOpenFolder(); 1187 if (openFolder != null) { 1188 return openFolder.requestFocus(direction, previouslyFocusedRect); 1189 } else { 1190 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1191 } 1192 } 1193 return false; 1194 } 1195 1196 @Override 1197 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1198 if (!mLauncher.isAllAppsVisible()) { 1199 final Folder openFolder = getOpenFolder(); 1200 if (openFolder != null) { 1201 openFolder.addFocusables(views, direction); 1202 } else { 1203 super.addFocusables(views, direction, focusableMode); 1204 } 1205 } 1206 } 1207 1208 @Override 1209 public boolean dispatchTouchEvent(MotionEvent ev) { 1210 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1211 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1212 // ie when you click on a mini-screen, it zooms back to that screen) 1213 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1214 return false; 1215 } 1216 } 1217 1218 return super.dispatchTouchEvent(ev); 1219 } 1220 1221 void enableChildrenCache(int fromPage, int toPage) { 1222 if (fromPage > toPage) { 1223 final int temp = fromPage; 1224 fromPage = toPage; 1225 toPage = temp; 1226 } 1227 1228 final int screenCount = getChildCount(); 1229 1230 fromPage = Math.max(fromPage, 0); 1231 toPage = Math.min(toPage, screenCount - 1); 1232 1233 for (int i = fromPage; i <= toPage; i++) { 1234 final CellLayout layout = (CellLayout) getChildAt(i); 1235 layout.setChildrenDrawnWithCacheEnabled(true); 1236 layout.setChildrenDrawingCacheEnabled(true); 1237 } 1238 } 1239 1240 void clearChildrenCache() { 1241 final int screenCount = getChildCount(); 1242 for (int i = 0; i < screenCount; i++) { 1243 final CellLayout layout = (CellLayout) getChildAt(i); 1244 layout.setChildrenDrawnWithCacheEnabled(false); 1245 } 1246 } 1247 1248 @Override 1249 public boolean onTouchEvent(MotionEvent ev) { 1250 AllAppsPagedView allApps = (AllAppsPagedView) 1251 mLauncher.findViewById(R.id.all_apps_paged_view); 1252 1253 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1254 && allApps != null) { 1255 if (ev.getAction() == MotionEvent.ACTION_UP && 1256 allApps.getTouchState() == TOUCH_STATE_REST) { 1257 1258 // Cancel any scrolling that is in progress. 1259 if (!mScroller.isFinished()) { 1260 mScroller.abortAnimation(); 1261 } 1262 setCurrentPage(mCurrentPage); 1263 1264 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1265 mLauncher.showWorkspace(true); 1266 } 1267 allApps.onTouchEvent(ev); 1268 return true; 1269 } else { 1270 return allApps.onTouchEvent(ev); 1271 } 1272 } 1273 return super.onTouchEvent(ev); 1274 } 1275 1276 protected void enableChildrenLayers(boolean enable) { 1277 for (int i = 0; i < getPageCount(); i++) { 1278 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1279 } 1280 } 1281 @Override 1282 protected void pageBeginMoving() { 1283 enableChildrenLayers(true); 1284 super.pageBeginMoving(); 1285 } 1286 1287 @Override 1288 protected void pageEndMoving() { 1289 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1290 enableChildrenLayers(false); 1291 } 1292 super.pageEndMoving(); 1293 } 1294 1295 @Override 1296 protected void onWallpaperTap(MotionEvent ev) { 1297 final int[] position = mTempCell; 1298 getLocationOnScreen(position); 1299 1300 int pointerIndex = ev.getActionIndex(); 1301 position[0] += (int) ev.getX(pointerIndex); 1302 position[1] += (int) ev.getY(pointerIndex); 1303 1304 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1305 ev.getAction() == MotionEvent.ACTION_UP 1306 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1307 position[0], position[1], 0, null); 1308 } 1309 1310 public boolean isSmall() { 1311 return mIsSmall; 1312 } 1313 1314 private float getYScaleForScreen(int screen) { 1315 int x = Math.abs(screen - 2); 1316 1317 // TODO: This should be generalized for use with arbitrary rotation angles. 1318 switch(x) { 1319 case 0: return EXTRA_SCALE_FACTOR_0; 1320 case 1: return EXTRA_SCALE_FACTOR_1; 1321 case 2: return EXTRA_SCALE_FACTOR_2; 1322 } 1323 return 1.0f; 1324 } 1325 1326 public void shrink(ShrinkState shrinkState) { 1327 shrink(shrinkState, true); 1328 } 1329 1330 // we use this to shrink the workspace for the all apps view and the customize view 1331 public void shrink(ShrinkState shrinkState, boolean animated) { 1332 // In the launcher interaction model, we're never in the state where we're shrunken and 1333 // visible in the bottom of the screen, and then want to fade to being invisible. 1334 // After spring loaded mode ends, this method was getting called twice, the first time 1335 // with BOTTOM_VISIBLE (what we want) and a second time with BOTTOM_INVISIBLE (not 1336 // what we want). As a temporary solution, we just change the second call to BOTTOM_VISIBLE 1337 if (mIsSmall && mShrinkState == ShrinkState.BOTTOM_VISIBLE) { 1338 shrinkState = ShrinkState.BOTTOM_VISIBLE; 1339 } 1340 if (mFirstLayout) { 1341 // (mFirstLayout == "first layout has not happened yet") 1342 // if we get a call to shrink() as part of our initialization (for example, if 1343 // Launcher is started in All Apps mode) then we need to wait for a layout call 1344 // to get our width so we can layout the mini-screen views correctly 1345 mWaitingToShrink = true; 1346 mWaitingToShrinkState = shrinkState; 1347 return; 1348 } 1349 // Stop any scrolling, move to the current page right away 1350 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1351 if (!mIsDragInProcess) { 1352 updateWhichPagesAcceptDrops(shrinkState); 1353 } 1354 1355 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1356 if (currentPage == null) { 1357 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1358 + " mNextPage " + mNextPage); 1359 return; 1360 } 1361 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1362 currentPage.setBackgroundAlpha(0.0f); 1363 } 1364 currentPage.setBackgroundAlphaMultiplier(1.0f); 1365 1366 mIsSmall = true; 1367 mShrinkState = shrinkState; 1368 1369 // we intercept and reject all touch events when we're small, so be sure to reset the state 1370 mTouchState = TOUCH_STATE_REST; 1371 mActivePointerId = INVALID_POINTER; 1372 1373 final Resources res = getResources(); 1374 final int screenWidth = getWidth(); 1375 final int screenHeight = getHeight(); 1376 1377 // Making the assumption that all pages have the same width as the 0th 1378 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1379 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1380 1381 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1382 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1383 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1384 1385 final int screenCount = getChildCount(); 1386 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1387 1388 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1389 float y = (isPortrait ? 1390 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1391 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1392 float finalAlpha = 1.0f; 1393 float extraShrinkFactor = 1.0f; 1394 1395 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1396 y = screenHeight - y - scaledPageHeight; 1397 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1398 // We shrink and disappear to nothing in the case of all apps 1399 // (which is when we shrink to the bottom) 1400 y = screenHeight - y - scaledPageHeight; 1401 finalAlpha = 0.0f; 1402 } else if (shrinkState == ShrinkState.MIDDLE) { 1403 y = screenHeight / 2 - scaledPageHeight / 2; 1404 finalAlpha = 1.0f; 1405 } else if (shrinkState == ShrinkState.TOP) { 1406 y = (isPortrait ? 1407 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1408 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1409 } 1410 1411 int duration; 1412 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1413 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1414 } else { 1415 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1416 } 1417 1418 // We animate all the screens to the centered position in workspace 1419 // At the same time, the screens become greyed/dimmed 1420 1421 // newX is initialized to the left-most position of the centered screens 1422 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1423 1424 // We are going to scale about the center of the view, so we need to adjust the positions 1425 // of the views accordingly 1426 x -= (pageWidth - scaledPageWidth) / 2.0f; 1427 y -= (pageHeight - scaledPageHeight) / 2.0f; 1428 1429 if (mAnimator != null) { 1430 mAnimator.cancel(); 1431 } 1432 1433 mAnimator = new AnimatorSet(); 1434 1435 final float[] oldXs = new float[getChildCount()]; 1436 final float[] oldYs = new float[getChildCount()]; 1437 final float[] oldScaleXs = new float[getChildCount()]; 1438 final float[] oldScaleYs = new float[getChildCount()]; 1439 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1440 final float[] oldAlphas = new float[getChildCount()]; 1441 final float[] oldRotationYs = new float[getChildCount()]; 1442 final float[] newXs = new float[getChildCount()]; 1443 final float[] newYs = new float[getChildCount()]; 1444 final float[] newScaleXs = new float[getChildCount()]; 1445 final float[] newScaleYs = new float[getChildCount()]; 1446 final float[] newBackgroundAlphas = new float[getChildCount()]; 1447 final float[] newAlphas = new float[getChildCount()]; 1448 final float[] newRotationYs = new float[getChildCount()]; 1449 1450 for (int i = 0; i < screenCount; i++) { 1451 final CellLayout cl = (CellLayout) getChildAt(i); 1452 1453 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1454 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1455 float rotationScaleY = getYScaleForScreen(i); 1456 1457 oldAlphas[i] = cl.getAlpha(); 1458 newAlphas[i] = finalAlpha; 1459 if (animated) { 1460 oldXs[i] = cl.getX(); 1461 oldYs[i] = cl.getY(); 1462 oldScaleXs[i] = cl.getScaleX(); 1463 oldScaleYs[i] = cl.getScaleY(); 1464 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1465 oldRotationYs[i] = cl.getRotationY(); 1466 newXs[i] = x; 1467 newYs[i] = y; 1468 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1469 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1470 newBackgroundAlphas[i] = finalAlpha; 1471 newRotationYs[i] = rotation; 1472 } else { 1473 cl.setX((int)x); 1474 cl.setY((int)y); 1475 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1476 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1477 cl.setBackgroundAlpha(finalAlpha); 1478 cl.setAlpha(finalAlpha); 1479 cl.setRotationY(rotation); 1480 mShrinkAnimationListener.onAnimationEnd(null); 1481 } 1482 // increment newX for the next screen 1483 x += scaledPageWidth + extraScaledSpacing; 1484 } 1485 1486 float wallpaperOffset = 0.5f; 1487 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1488 int wallpaperTravelHeight = (int) (display.getHeight() * 1489 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1490 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1491 boolean isLandscape = display.getWidth() > display.getHeight(); 1492 1493 switch (shrinkState) { 1494 // animating in 1495 case TOP: 1496 // customize 1497 wallpaperOffset = 0.5f + offsetFromCenter; 1498 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1499 break; 1500 case MIDDLE: 1501 case SPRING_LOADED: 1502 wallpaperOffset = 0.5f; 1503 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1504 break; 1505 case BOTTOM_HIDDEN: 1506 case BOTTOM_VISIBLE: 1507 // allapps 1508 wallpaperOffset = 0.5f - offsetFromCenter; 1509 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1510 break; 1511 } 1512 1513 setLayoutScale(1.0f); 1514 if (animated) { 1515 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1516 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1517 1518 mSyncWallpaperOffsetWithScroll = false; 1519 1520 ValueAnimator animWithInterpolator = 1521 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1522 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1523 1524 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1525 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1526 final float newHorizontalWallpaperOffset = 0.5f; 1527 final float newVerticalWallpaperOffset = wallpaperOffset; 1528 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1529 public void onAnimationUpdate(ValueAnimator animation) { 1530 fastInvalidate(); 1531 final float b = (Float) animation.getAnimatedValue(); 1532 final float a = 1f - b; 1533 setHorizontalWallpaperOffset( 1534 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1535 setVerticalWallpaperOffset( 1536 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1537 for (int i = 0; i < screenCount; i++) { 1538 final CellLayout cl = (CellLayout) getChildAt(i); 1539 cl.fastInvalidate(); 1540 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1541 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1542 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1543 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1544 cl.setFastBackgroundAlpha( 1545 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1546 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1547 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1548 } 1549 } 1550 }); 1551 mAnimator.playTogether(animWithInterpolator); 1552 mAnimator.addListener(mShrinkAnimationListener); 1553 mAnimator.start(); 1554 } else { 1555 setVerticalWallpaperOffset(wallpaperOffset); 1556 setHorizontalWallpaperOffset(0.5f); 1557 updateWallpaperOffsetImmediately(); 1558 } 1559 setChildrenDrawnWithCacheEnabled(true); 1560 1561 if (shrinkState == ShrinkState.TOP) { 1562 showBackgroundGradientForCustomizeTray(); 1563 } else { 1564 showBackgroundGradientForAllApps(); 1565 } 1566 } 1567 1568 /* 1569 * This interpolator emulates the rate at which the perceived scale of an object changes 1570 * as its distance from a camera increases. When this interpolator is applied to a scale 1571 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1572 * from the camera. 1573 */ 1574 static class ZInterpolator implements TimeInterpolator { 1575 private float focalLength; 1576 1577 public ZInterpolator(float foc) { 1578 focalLength = foc; 1579 } 1580 1581 public float getInterpolation(float input) { 1582 return (1.0f - focalLength / (focalLength + input)) / 1583 (1.0f - focalLength / (focalLength + 1.0f)); 1584 } 1585 } 1586 1587 /* 1588 * The exact reverse of ZInterpolator. 1589 */ 1590 static class InverseZInterpolator implements TimeInterpolator { 1591 private ZInterpolator zInterpolator; 1592 public InverseZInterpolator(float foc) { 1593 zInterpolator = new ZInterpolator(foc); 1594 } 1595 public float getInterpolation(float input) { 1596 return 1 - zInterpolator.getInterpolation(1 - input); 1597 } 1598 } 1599 1600 /* 1601 * ZInterpolator compounded with an ease-out. 1602 */ 1603 static class ZoomOutInterpolator implements TimeInterpolator { 1604 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1605 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1606 1607 public float getInterpolation(float input) { 1608 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1609 } 1610 } 1611 1612 /* 1613 * InvereZInterpolator compounded with an ease-out. 1614 */ 1615 static class ZoomInInterpolator implements TimeInterpolator { 1616 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1617 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1618 1619 public float getInterpolation(float input) { 1620 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1621 } 1622 } 1623 1624 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1625 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1626 1627 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1628 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1629 } 1630 1631 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1632 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1633 } 1634 1635 private void updateWhichPagesAcceptDropsHelper( 1636 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1637 final int screenCount = getChildCount(); 1638 for (int i = 0; i < screenCount; i++) { 1639 CellLayout cl = (CellLayout) getChildAt(i); 1640 cl.setIsDragOccuring(isDragHappening); 1641 switch (state) { 1642 case TOP: 1643 cl.setIsDefaultDropTarget(i == mCurrentPage); 1644 case BOTTOM_HIDDEN: 1645 case BOTTOM_VISIBLE: 1646 case SPRING_LOADED: 1647 if (state != ShrinkState.TOP) { 1648 cl.setIsDefaultDropTarget(false); 1649 } 1650 if (!isDragHappening) { 1651 // even if a drag isn't happening, we don't want to show a screen as 1652 // accepting drops if it doesn't have at least one free cell 1653 spanX = 1; 1654 spanY = 1; 1655 } 1656 // the page accepts drops if we can find at least one empty spot 1657 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1658 break; 1659 default: 1660 throw new RuntimeException("Unhandled ShrinkState " + state); 1661 } 1662 } 1663 } 1664 1665 /* 1666 * 1667 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1668 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1669 * 1670 * These methods mark the appropriate pages as accepting drops (which alters their visual 1671 * appearance). 1672 * 1673 */ 1674 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1675 mIsDragInProcess = true; 1676 1677 final Canvas canvas = new Canvas(); 1678 1679 // We need to add extra padding to the bitmap to make room for the glow effect 1680 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1681 1682 CellLayout cl = (CellLayout) getChildAt(0); 1683 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1684 // The outline is used to visualize where the item will land if dropped 1685 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1686 1687 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1688 } 1689 1690 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1691 // never dragged over 1692 public void onDragStopped(boolean success) { 1693 mLastDragView = null; 1694 // In the success case, DragController has already called onDragExit() 1695 if (!success) { 1696 doDragExit(); 1697 } 1698 mIsDragInProcess = false; 1699 updateWhichPagesAcceptDrops(mShrinkState); 1700 } 1701 1702 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1703 public void unshrink(CellLayout clThatWasClicked) { 1704 unshrink(clThatWasClicked, false); 1705 } 1706 1707 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1708 int newCurrentPage = indexOfChild(clThatWasClicked); 1709 if (mIsSmall) { 1710 if (springLoaded) { 1711 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1712 } 1713 scrollToNewPageWithoutMovingPages(newCurrentPage); 1714 unshrink(true, springLoaded); 1715 } 1716 } 1717 1718 1719 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1720 mShrinkState = ShrinkState.SPRING_LOADED; 1721 unshrink(clThatWasClicked, true); 1722 mDragTargetLayout.onDragEnter(); 1723 } 1724 1725 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1726 shrink(shrinkState); 1727 if (mDragTargetLayout != null) { 1728 mDragTargetLayout.onDragExit(); 1729 } 1730 } 1731 1732 void unshrink(boolean animated) { 1733 unshrink(animated, false); 1734 } 1735 1736 void unshrink(boolean animated, boolean springLoaded) { 1737 mWaitingToShrink = false; 1738 if (mIsSmall) { 1739 float finalScaleFactor = 1.0f; 1740 float finalBackgroundAlpha = 0.0f; 1741 if (springLoaded) { 1742 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1743 finalBackgroundAlpha = 1.0f; 1744 } else { 1745 mIsSmall = false; 1746 } 1747 if (mAnimator != null) { 1748 mAnimator.cancel(); 1749 } 1750 1751 mAnimator = new AnimatorSet(); 1752 final int screenCount = getChildCount(); 1753 1754 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1755 1756 final float[] oldTranslationXs = new float[getChildCount()]; 1757 final float[] oldTranslationYs = new float[getChildCount()]; 1758 final float[] oldScaleXs = new float[getChildCount()]; 1759 final float[] oldScaleYs = new float[getChildCount()]; 1760 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1761 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1762 final float[] oldAlphas = new float[getChildCount()]; 1763 final float[] oldRotationYs = new float[getChildCount()]; 1764 final float[] newTranslationXs = new float[getChildCount()]; 1765 final float[] newTranslationYs = new float[getChildCount()]; 1766 final float[] newScaleXs = new float[getChildCount()]; 1767 final float[] newScaleYs = new float[getChildCount()]; 1768 final float[] newBackgroundAlphas = new float[getChildCount()]; 1769 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1770 final float[] newAlphas = new float[getChildCount()]; 1771 final float[] newRotationYs = new float[getChildCount()]; 1772 1773 for (int i = 0; i < screenCount; i++) { 1774 final CellLayout cl = (CellLayout)getChildAt(i); 1775 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1776 float finalAlphaMultiplierValue = 1777 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1778 0.0f : 1.0f; 1779 float rotation = 0.0f; 1780 1781 if (i < mCurrentPage) { 1782 rotation = WORKSPACE_ROTATION; 1783 } else if (i > mCurrentPage) { 1784 rotation = -WORKSPACE_ROTATION; 1785 } 1786 1787 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1788 1789 oldAlphas[i] = cl.getAlpha(); 1790 newAlphas[i] = finalAlphaValue; 1791 if (animated) { 1792 oldTranslationXs[i] = cl.getTranslationX(); 1793 oldTranslationYs[i] = cl.getTranslationY(); 1794 oldScaleXs[i] = cl.getScaleX(); 1795 oldScaleYs[i] = cl.getScaleY(); 1796 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1797 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1798 oldRotationYs[i] = cl.getRotationY(); 1799 1800 newTranslationXs[i] = translation; 1801 newTranslationYs[i] = 0f; 1802 newScaleXs[i] = finalScaleFactor; 1803 newScaleYs[i] = finalScaleFactor; 1804 newBackgroundAlphas[i] = finalBackgroundAlpha; 1805 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1806 newRotationYs[i] = rotation; 1807 } else { 1808 cl.setTranslationX(translation); 1809 cl.setTranslationY(0.0f); 1810 cl.setScaleX(finalScaleFactor); 1811 cl.setScaleY(finalScaleFactor); 1812 cl.setBackgroundAlpha(0.0f); 1813 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1814 cl.setAlpha(finalAlphaValue); 1815 cl.setRotationY(rotation); 1816 mUnshrinkAnimationListener.onAnimationEnd(null); 1817 } 1818 } 1819 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1820 boolean isLandscape = display.getWidth() > display.getHeight(); 1821 switch (mShrinkState) { 1822 // animating out 1823 case TOP: 1824 // customize 1825 if (animated) { 1826 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1827 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1828 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1829 } 1830 break; 1831 case MIDDLE: 1832 case SPRING_LOADED: 1833 if (animated) { 1834 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1835 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1836 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1837 } 1838 break; 1839 case BOTTOM_HIDDEN: 1840 case BOTTOM_VISIBLE: 1841 // all apps 1842 if (animated) { 1843 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1844 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1845 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1846 } 1847 break; 1848 } 1849 if (animated) { 1850 ValueAnimator animWithInterpolator = 1851 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1852 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1853 1854 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1855 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1856 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1857 final float newVerticalWallpaperOffset = 0.5f; 1858 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1859 public void onAnimationUpdate(ValueAnimator animation) { 1860 fastInvalidate(); 1861 final float b = (Float) animation.getAnimatedValue(); 1862 final float a = 1f - b; 1863 setHorizontalWallpaperOffset( 1864 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1865 setVerticalWallpaperOffset( 1866 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1867 for (int i = 0; i < screenCount; i++) { 1868 final CellLayout cl = (CellLayout) getChildAt(i); 1869 cl.fastInvalidate(); 1870 cl.setFastTranslationX( 1871 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1872 cl.setFastTranslationY( 1873 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1874 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1875 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1876 cl.setFastBackgroundAlpha( 1877 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1878 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1879 b * newBackgroundAlphaMultipliers[i]); 1880 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1881 } 1882 } 1883 }); 1884 1885 ValueAnimator rotationAnim = 1886 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1887 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1888 rotationAnim.addUpdateListener(new AnimatorUpdateListener() { 1889 public void onAnimationUpdate(ValueAnimator animation) { 1890 // don't invalidate workspace because we did it above 1891 final float b = (Float) animation.getAnimatedValue(); 1892 final float a = 1f - b; 1893 for (int i = 0; i < screenCount; i++) { 1894 final CellLayout cl = (CellLayout) getChildAt(i); 1895 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1896 } 1897 } 1898 }); 1899 1900 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1901 // If we call this when we're not animated, onAnimationEnd is never called on 1902 // the listener; make sure we only use the listener when we're actually animating 1903 mAnimator.addListener(mUnshrinkAnimationListener); 1904 mAnimator.start(); 1905 } else { 1906 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1907 setVerticalWallpaperOffset(0.5f); 1908 updateWallpaperOffsetImmediately(); 1909 } 1910 } 1911 1912 if (!springLoaded) { 1913 hideBackgroundGradient(); 1914 } 1915 } 1916 1917 /** 1918 * Draw the View v into the given Canvas. 1919 * 1920 * @param v the view to draw 1921 * @param destCanvas the canvas to draw on 1922 * @param padding the horizontal and vertical padding to use when drawing 1923 */ 1924 private void drawDragView(View v, Canvas destCanvas, int padding) { 1925 final Rect clipRect = mTempRect; 1926 v.getDrawingRect(clipRect); 1927 1928 // For a TextView, adjust the clip rect so that we don't include the text label 1929 if (v instanceof BubbleTextView) { 1930 final BubbleTextView tv = (BubbleTextView) v; 1931 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1932 tv.getLayout().getLineTop(0); 1933 } else if (v instanceof TextView) { 1934 final TextView tv = (TextView) v; 1935 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1936 tv.getLayout().getLineTop(0); 1937 } 1938 1939 // Draw the View into the bitmap. 1940 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1941 // they set scrollX and scrollY to large values to achieve centered text 1942 1943 destCanvas.save(); 1944 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1945 destCanvas.clipRect(clipRect, Op.REPLACE); 1946 v.draw(destCanvas); 1947 destCanvas.restore(); 1948 } 1949 1950 /** 1951 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1952 * Responsibility for the bitmap is transferred to the caller. 1953 */ 1954 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1955 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1956 final Bitmap b = Bitmap.createBitmap( 1957 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1958 1959 canvas.setBitmap(b); 1960 drawDragView(v, canvas, padding); 1961 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1962 return b; 1963 } 1964 1965 /** 1966 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1967 * Responsibility for the bitmap is transferred to the caller. 1968 */ 1969 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 1970 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1971 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 1972 canvas.setBitmap(b); 1973 1974 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 1975 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 1976 (h - padding) / (float) orig.getHeight()); 1977 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 1978 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 1979 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 1980 1981 // center the image 1982 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 1983 1984 Paint p = new Paint(); 1985 p.setFilterBitmap(true); 1986 canvas.drawBitmap(orig, src, dst, p); 1987 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1988 1989 return b; 1990 } 1991 1992 /** 1993 * Creates a drag outline to represent a drop (that we don't have the actual information for 1994 * yet). May be changed in the future to alter the drop outline slightly depending on the 1995 * clip description mime data. 1996 */ 1997 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1998 Resources r = getResources(); 1999 final int outlineColor = r.getColor(R.color.drag_outline_color); 2000 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2001 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2002 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2003 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2004 final Bitmap b = Bitmap.createBitmap( 2005 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2006 2007 canvas.setBitmap(b); 2008 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2009 rectRadius, rectRadius, mExternalDragOutlinePaint); 2010 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2011 return b; 2012 } 2013 2014 /** 2015 * Returns a new bitmap to show when the given View is being dragged around. 2016 * Responsibility for the bitmap is transferred to the caller. 2017 */ 2018 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2019 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2020 final Bitmap b = Bitmap.createBitmap( 2021 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2022 2023 canvas.setBitmap(b); 2024 canvas.drawBitmap(mDragOutline, 0, 0, null); 2025 drawDragView(v, canvas, padding); 2026 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2027 2028 return b; 2029 } 2030 2031 void startDrag(CellLayout.CellInfo cellInfo) { 2032 View child = cellInfo.cell; 2033 2034 // Make sure the drag was started by a long press as opposed to a long click. 2035 if (!child.isInTouchMode()) { 2036 return; 2037 } 2038 2039 mDragInfo = cellInfo; 2040 2041 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2042 current.onDragChild(child); 2043 2044 child.clearFocus(); 2045 child.setPressed(false); 2046 2047 final Canvas canvas = new Canvas(); 2048 2049 // We need to add extra padding to the bitmap to make room for the glow effect 2050 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2051 2052 // The outline is used to visualize where the item will land if dropped 2053 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2054 2055 // The drag bitmap follows the touch point around on the screen 2056 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2057 2058 final int bmpWidth = b.getWidth(); 2059 final int bmpHeight = b.getHeight(); 2060 child.getLocationOnScreen(mTempXY); 2061 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2062 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2063 mLauncher.lockScreenOrientation(); 2064 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 2065 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 2066 b.recycle(); 2067 } 2068 2069 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2070 boolean insertAtFirst, int intersectX, int intersectY) { 2071 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2072 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2073 2074 final int[] cellXY = new int[2]; 2075 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2076 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2077 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2078 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2079 cellXY[0], cellXY[1]); 2080 } 2081 2082 private void setPositionForDropAnimation( 2083 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2084 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2085 2086 // Based on the position of the drag view, find the top left of the original view 2087 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 2088 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 2089 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 2090 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 2091 2092 // Set its old pos (in the new parent's coordinates); it will be animated 2093 // in animateViewIntoPosition after the next layout pass 2094 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2095 lp.oldY = viewY - (parent.getTop() - mScrollY); 2096 } 2097 2098 /* 2099 * We should be careful that this method cannot result in any synchronous requestLayout() 2100 * calls, as it is called from onLayout(). 2101 */ 2102 public void animateViewIntoPosition(final View view) { 2103 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2104 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2105 2106 // Convert the animation params to be relative to the Workspace, not the CellLayout 2107 final int fromX = lp.oldX + parent.getLeft(); 2108 final int fromY = lp.oldY + parent.getTop(); 2109 2110 final int dx = lp.x - lp.oldX; 2111 final int dy = lp.y - lp.oldY; 2112 2113 // Calculate the duration of the animation based on the object's distance 2114 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2115 final Resources res = getResources(); 2116 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2117 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2118 if (dist < maxDist) { 2119 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2120 } 2121 2122 if (mDropAnim != null) { 2123 mDropAnim.end(); 2124 } 2125 mDropAnim = new ValueAnimator(); 2126 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2127 2128 // The view is invisible during the animation; we render it manually. 2129 mDropAnim.addListener(new AnimatorListenerAdapter() { 2130 public void onAnimationStart(Animator animation) { 2131 // Set this here so that we don't render it until the animation begins 2132 mDropView = view; 2133 } 2134 2135 public void onAnimationEnd(Animator animation) { 2136 if (mDropView != null) { 2137 mDropView.setVisibility(View.VISIBLE); 2138 mDropView = null; 2139 } 2140 } 2141 }); 2142 2143 mDropAnim.setDuration(duration); 2144 mDropAnim.setFloatValues(0.0f, 1.0f); 2145 mDropAnim.removeAllUpdateListeners(); 2146 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2147 public void onAnimationUpdate(ValueAnimator animation) { 2148 final float percent = (Float) animation.getAnimatedValue(); 2149 // Invalidate the old position 2150 invalidate(mDropViewPos[0], mDropViewPos[1], 2151 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2152 2153 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2154 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2155 invalidate(mDropViewPos[0], mDropViewPos[1], 2156 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2157 } 2158 }); 2159 2160 mDropAnim.start(); 2161 } 2162 2163 /** 2164 * {@inheritDoc} 2165 */ 2166 public boolean acceptDrop(DragSource source, int x, int y, 2167 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2168 2169 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2170 if (source != this) { 2171 // Don't accept the drop if we're not over a screen at time of drop 2172 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2173 return false; 2174 } 2175 2176 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2177 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2178 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2179 2180 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2181 2182 // Don't accept the drop if there's no room for the item 2183 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2184 mLauncher.showOutOfSpaceMessage(); 2185 return false; 2186 } 2187 } 2188 return true; 2189 } 2190 2191 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2192 DragView dragView, Object dragInfo) { 2193 2194 int originX = x - xOffset; 2195 int originY = y - yOffset; 2196 2197 if (mIsSmall || mIsInUnshrinkAnimation) { 2198 // get originX and originY in the local coordinate system of the screen 2199 mTempOriginXY[0] = originX; 2200 mTempOriginXY[1] = originY; 2201 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 2202 originX = (int)mTempOriginXY[0]; 2203 originY = (int)mTempOriginXY[1]; 2204 } 2205 2206 // When you are in customization mode and drag to a particular screen, make that the 2207 // new current/default screen, so any subsequent taps add items to that screen 2208 if (!mLauncher.isAllAppsVisible()) { 2209 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2210 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2211 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2212 } 2213 } 2214 2215 if (source != this) { 2216 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 2217 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 2218 } else { 2219 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 2220 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 2221 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 2222 } 2223 } else if (mDragInfo != null) { 2224 final View cell = mDragInfo.cell; 2225 CellLayout dropTargetLayout = mDragTargetLayout; 2226 2227 // Handle the case where the user drops when in the scroll area. 2228 // This is treated as a drop on the adjacent page. 2229 if (dropTargetLayout == null && mInScrollArea) { 2230 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2231 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2232 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2233 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2234 } 2235 } 2236 2237 if (dropTargetLayout != null) { 2238 // Move internally 2239 mTargetCell = findNearestVacantArea(originX, originY, 2240 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 2241 mTargetCell); 2242 2243 final int screen = (mTargetCell == null) ? 2244 mDragInfo.screen : indexOfChild(dropTargetLayout); 2245 2246 if (screen != mCurrentPage) { 2247 snapToPage(screen); 2248 } 2249 2250 if (mTargetCell != null) { 2251 if (screen != mDragInfo.screen) { 2252 // Reparent the view 2253 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2254 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2255 mDragInfo.spanX, mDragInfo.spanY); 2256 } 2257 2258 // update the item's position after drop 2259 final ItemInfo info = (ItemInfo) cell.getTag(); 2260 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2261 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2262 lp.cellX = mTargetCell[0]; 2263 lp.cellY = mTargetCell[1]; 2264 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2265 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2266 2267 LauncherModel.moveItemInDatabase(mLauncher, info, 2268 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2269 lp.cellX, lp.cellY); 2270 } 2271 } 2272 2273 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2274 2275 // Prepare it to be animated into its new position 2276 // This must be called after the view has been re-parented 2277 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 2278 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2279 parent.onDropChild(cell, animateDrop); 2280 } 2281 } 2282 2283 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2284 int yOffset, DragView dragView, Object dragInfo) { 2285 mDragTargetLayout = null; // Reset the drag state 2286 2287 if (!mIsSmall) { 2288 mDragTargetLayout = getCurrentDropLayout(); 2289 mDragTargetLayout.onDragEnter(); 2290 showOutlines(); 2291 } 2292 } 2293 2294 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2295 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2296 2297 if (mIsSmall || mIsInUnshrinkAnimation) { 2298 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2299 return null; 2300 } 2301 // We may need to delegate the drag to a child view. If a 1x1 item 2302 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2303 // then drag events should be handled by that child. 2304 2305 ItemInfo item = (ItemInfo)dragInfo; 2306 CellLayout currentLayout = getCurrentDropLayout(); 2307 2308 int dragPointX, dragPointY; 2309 if (item.spanX == 1 && item.spanY == 1) { 2310 // For a 1x1, calculate the drop cell exactly as in onDragOver 2311 dragPointX = x - xOffset; 2312 dragPointY = y - yOffset; 2313 } else { 2314 // Otherwise, use the exact drag coordinates 2315 dragPointX = x; 2316 dragPointY = y; 2317 } 2318 dragPointX += mScrollX - currentLayout.getLeft(); 2319 dragPointY += mScrollY - currentLayout.getTop(); 2320 2321 // If we are dragging over a cell that contains a DropTarget that will 2322 // accept the drop, delegate to that DropTarget. 2323 final int[] cellXY = mTempCell; 2324 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2325 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2326 if (child instanceof DropTarget) { 2327 DropTarget target = (DropTarget)child; 2328 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2329 return target; 2330 } 2331 } 2332 return null; 2333 } 2334 2335 /** 2336 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2337 * in the returned structure related to the widgets that match the drop (or a null list if it is 2338 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2339 */ 2340 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2341 final LauncherModel model = mLauncher.getModel(); 2342 final ClipDescription desc = event.getClipDescription(); 2343 final int mimeTypeCount = desc.getMimeTypeCount(); 2344 for (int i = 0; i < mimeTypeCount; ++i) { 2345 final String mimeType = desc.getMimeType(i); 2346 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2347 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2348 } else { 2349 final List<WidgetMimeTypeHandlerData> widgets = 2350 model.resolveWidgetsForMimeType(mContext, mimeType); 2351 if (widgets.size() > 0) { 2352 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2353 } 2354 } 2355 } 2356 return null; 2357 } 2358 2359 /** 2360 * Global drag and drop handler 2361 */ 2362 @Override 2363 public boolean onDragEvent(DragEvent event) { 2364 final ClipDescription desc = event.getClipDescription(); 2365 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2366 final int[] pos = new int[2]; 2367 layout.getLocationOnScreen(pos); 2368 // We need to offset the drag coordinates to layout coordinate space 2369 final int x = (int) event.getX() - pos[0]; 2370 final int y = (int) event.getY() - pos[1]; 2371 2372 switch (event.getAction()) { 2373 case DragEvent.ACTION_DRAG_STARTED: { 2374 // Validate this drag 2375 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2376 if (test != null) { 2377 boolean isShortcut = (test.second == null); 2378 if (isShortcut) { 2379 // Check if we have enough space on this screen to add a new shortcut 2380 if (!layout.findCellForSpan(pos, 1, 1)) { 2381 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2382 Toast.LENGTH_SHORT).show(); 2383 return false; 2384 } 2385 } 2386 } else { 2387 // Show error message if we couldn't accept any of the items 2388 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2389 Toast.LENGTH_SHORT).show(); 2390 return false; 2391 } 2392 2393 // Create the drag outline 2394 // We need to add extra padding to the bitmap to make room for the glow effect 2395 final Canvas canvas = new Canvas(); 2396 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2397 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2398 2399 // Show the current page outlines to indicate that we can accept this drop 2400 showOutlines(); 2401 layout.setIsDragOccuring(true); 2402 layout.onDragEnter(); 2403 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2404 2405 return true; 2406 } 2407 case DragEvent.ACTION_DRAG_LOCATION: 2408 // Visualize the drop location 2409 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2410 return true; 2411 case DragEvent.ACTION_DROP: { 2412 // Try and add any shortcuts 2413 final LauncherModel model = mLauncher.getModel(); 2414 final ClipData data = event.getClipData(); 2415 2416 // We assume that the mime types are ordered in descending importance of 2417 // representation. So we enumerate the list of mime types and alert the 2418 // user if any widgets can handle the drop. Only the most preferred 2419 // representation will be handled. 2420 pos[0] = x; 2421 pos[1] = y; 2422 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2423 if (test != null) { 2424 final int index = test.first; 2425 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2426 final boolean isShortcut = (widgets == null); 2427 final String mimeType = desc.getMimeType(index); 2428 if (isShortcut) { 2429 final Intent intent = data.getItemAt(index).getIntent(); 2430 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2431 onDropExternal(x, y, info, layout, false); 2432 } else { 2433 if (widgets.size() == 1) { 2434 // If there is only one item, then go ahead and add and configure 2435 // that widget 2436 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2437 final PendingAddWidgetInfo createInfo = 2438 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2439 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2440 } else { 2441 // Show the widget picker dialog if there is more than one widget 2442 // that can handle this data type 2443 final InstallWidgetReceiver.WidgetListAdapter adapter = 2444 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2445 data, widgets, layout, mCurrentPage, pos); 2446 final AlertDialog.Builder builder = 2447 new AlertDialog.Builder(mContext); 2448 builder.setAdapter(adapter, adapter); 2449 builder.setCancelable(true); 2450 builder.setTitle(mContext.getString( 2451 R.string.external_drop_widget_pick_title)); 2452 builder.setIcon(R.drawable.ic_no_applications); 2453 builder.show(); 2454 } 2455 } 2456 } 2457 return true; 2458 } 2459 case DragEvent.ACTION_DRAG_ENDED: 2460 // Hide the page outlines after the drop 2461 layout.setIsDragOccuring(false); 2462 layout.onDragExit(); 2463 hideOutlines(); 2464 return true; 2465 } 2466 return super.onDragEvent(event); 2467 } 2468 2469 /* 2470 * 2471 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2472 * coordinate space. The argument xy is modified with the return result. 2473 * 2474 */ 2475 void mapPointFromSelfToChild(View v, float[] xy) { 2476 mapPointFromSelfToChild(v, xy, null); 2477 } 2478 2479 /* 2480 * 2481 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2482 * coordinate space. The argument xy is modified with the return result. 2483 * 2484 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2485 * computing it itself; we use this to avoid redundant matrix inversions in 2486 * findMatchingPageForDragOver 2487 * 2488 */ 2489 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2490 if (cachedInverseMatrix == null) { 2491 v.getMatrix().invert(mTempInverseMatrix); 2492 cachedInverseMatrix = mTempInverseMatrix; 2493 } 2494 xy[0] = xy[0] + mScrollX - v.getLeft(); 2495 xy[1] = xy[1] + mScrollY - v.getTop(); 2496 cachedInverseMatrix.mapPoints(xy); 2497 } 2498 2499 /* 2500 * 2501 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2502 * the parent View's coordinate space. The argument xy is modified with the return result. 2503 * 2504 */ 2505 void mapPointFromChildToSelf(View v, float[] xy) { 2506 v.getMatrix().mapPoints(xy); 2507 xy[0] -= (mScrollX - v.getLeft()); 2508 xy[1] -= (mScrollY - v.getTop()); 2509 } 2510 2511 static private float squaredDistance(float[] point1, float[] point2) { 2512 float distanceX = point1[0] - point2[0]; 2513 float distanceY = point2[1] - point2[1]; 2514 return distanceX * distanceX + distanceY * distanceY; 2515 } 2516 2517 /* 2518 * 2519 * Returns true if the passed CellLayout cl overlaps with dragView 2520 * 2521 */ 2522 boolean overlaps(CellLayout cl, DragView dragView, 2523 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2524 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2525 final float[] draggedItemTopLeft = mTempDragCoordinates; 2526 draggedItemTopLeft[0] = dragViewX; 2527 draggedItemTopLeft[1] = dragViewY; 2528 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2529 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2530 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2531 2532 // Transform the dragged item's top left coordinates 2533 // to the CellLayout's local coordinates 2534 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2535 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2536 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2537 2538 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2539 // Transform the dragged item's bottom right coordinates 2540 // to the CellLayout's local coordinates 2541 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2542 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2543 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2544 2545 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2546 float overlap = (overlapRegionRight - overlapRegionLeft) * 2547 (overlapRegionBottom - overlapRegionTop); 2548 if (overlap > 0) { 2549 return true; 2550 } 2551 } 2552 } 2553 return false; 2554 } 2555 2556 /* 2557 * 2558 * This method returns the CellLayout that is currently being dragged to. In order to drag 2559 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2560 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2561 * 2562 * Return null if no CellLayout is currently being dragged over 2563 * 2564 */ 2565 private CellLayout findMatchingPageForDragOver( 2566 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2567 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2568 // with the item being dragged and then choose the one that's closest to the touch point 2569 final int screenCount = getChildCount(); 2570 CellLayout bestMatchingScreen = null; 2571 float smallestDistSoFar = Float.MAX_VALUE; 2572 2573 for (int i = 0; i < screenCount; i++) { 2574 CellLayout cl = (CellLayout)getChildAt(i); 2575 2576 final float[] touchXy = mTempTouchCoordinates; 2577 touchXy[0] = originX + offsetX; 2578 touchXy[1] = originY + offsetY; 2579 2580 // Transform the touch coordinates to the CellLayout's local coordinates 2581 // If the touch point is within the bounds of the cell layout, we can return immediately 2582 cl.getMatrix().invert(mTempInverseMatrix); 2583 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2584 2585 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2586 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2587 return cl; 2588 } 2589 2590 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2591 // Get the center of the cell layout in screen coordinates 2592 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2593 cellLayoutCenter[0] = cl.getWidth()/2; 2594 cellLayoutCenter[1] = cl.getHeight()/2; 2595 mapPointFromChildToSelf(cl, cellLayoutCenter); 2596 2597 touchXy[0] = originX + offsetX; 2598 touchXy[1] = originY + offsetY; 2599 2600 // Calculate the distance between the center of the CellLayout 2601 // and the touch point 2602 float dist = squaredDistance(touchXy, cellLayoutCenter); 2603 2604 if (dist < smallestDistSoFar) { 2605 smallestDistSoFar = dist; 2606 bestMatchingScreen = cl; 2607 } 2608 } 2609 } 2610 return bestMatchingScreen; 2611 } 2612 2613 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2614 DragView dragView, Object dragInfo) { 2615 // When touch is inside the scroll area, skip dragOver actions for the current screen 2616 if (!mInScrollArea) { 2617 CellLayout layout; 2618 int originX = x - xOffset; 2619 int originY = y - yOffset; 2620 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2621 if (shrunken) { 2622 mLastDragView = dragView; 2623 mLastDragOriginX = originX; 2624 mLastDragOriginY = originY; 2625 mLastDragXOffset = xOffset; 2626 mLastDragYOffset = yOffset; 2627 layout = findMatchingPageForDragOver(dragView, originX, originY, xOffset, yOffset); 2628 2629 if (layout != mDragTargetLayout) { 2630 if (mDragTargetLayout != null) { 2631 mDragTargetLayout.setIsDragOverlapping(false); 2632 mSpringLoadedDragController.onDragExit(); 2633 } 2634 mDragTargetLayout = layout; 2635 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2636 mDragTargetLayout.setIsDragOverlapping(true); 2637 mSpringLoadedDragController.onDragEnter( 2638 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2639 } 2640 } 2641 } else { 2642 layout = getCurrentDropLayout(); 2643 if (layout != mDragTargetLayout) { 2644 if (mDragTargetLayout != null) { 2645 mDragTargetLayout.onDragExit(); 2646 } 2647 layout.onDragEnter(); 2648 mDragTargetLayout = layout; 2649 } 2650 } 2651 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2652 layout = getCurrentDropLayout(); 2653 2654 final ItemInfo item = (ItemInfo)dragInfo; 2655 if (dragInfo instanceof LauncherAppWidgetInfo) { 2656 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2657 2658 if (widgetInfo.spanX == -1) { 2659 // Calculate the grid spans needed to fit this widget 2660 int[] spans = layout.rectToCell( 2661 widgetInfo.minWidth, widgetInfo.minHeight, null); 2662 item.spanX = spans[0]; 2663 item.spanY = spans[1]; 2664 } 2665 } 2666 2667 if (source instanceof AllAppsPagedView) { 2668 // This is a hack to fix the point used to determine which cell an icon from 2669 // the all apps screen is over 2670 if (item != null && item.spanX == 1 && layout != null) { 2671 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2672 2673 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2674 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2675 dragView.setDragRegion(dragView.getDragRegionLeft(), 2676 dragView.getDragRegionTop(), 2677 layout.getCellWidth(), 2678 dragView.getDragRegionHeight()); 2679 } 2680 } 2681 } else if (source == this) { 2682 // When dragging from the workspace, the drag view is slightly bigger than 2683 // the original view, and offset vertically. Adjust to account for this. 2684 final View origView = mDragInfo.cell; 2685 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2686 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2687 + dragView.getOffsetY(); 2688 } 2689 2690 if (mDragTargetLayout != null) { 2691 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2692 float[] localOrigin = { originX, originY }; 2693 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2694 mSpringLoadedDropX = (int) localOrigin[0]; 2695 mSpringLoadedDropY = (int) localOrigin[1]; 2696 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2697 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2698 } 2699 } 2700 } 2701 } 2702 2703 private void doDragExit() { 2704 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2705 if (mDragTargetLayout != null) { 2706 mDragTargetLayout.onDragExit(); 2707 } 2708 if (!mIsPageMoving) { 2709 hideOutlines(); 2710 } 2711 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2712 mLauncher.exitSpringLoadedDragMode(); 2713 } 2714 clearAllHovers(); 2715 } 2716 2717 public void onDragExit(DragSource source, int x, int y, int xOffset, 2718 int yOffset, DragView dragView, Object dragInfo) { 2719 doDragExit(); 2720 } 2721 2722 @Override 2723 public void getHitRect(Rect outRect) { 2724 // We want the workspace to have the whole area of the display (it will find the correct 2725 // cell layout to drop to in the existing drag/drop logic. 2726 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2727 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2728 } 2729 2730 /** 2731 * Add the item specified by dragInfo to the given layout. 2732 * @return true if successful 2733 */ 2734 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2735 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2736 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2737 return true; 2738 } 2739 mLauncher.showOutOfSpaceMessage(); 2740 return false; 2741 } 2742 2743 /** 2744 * Drop an item that didn't originate on one of the workspace screens. 2745 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2746 * come from another app altogether. 2747 * 2748 * NOTE: This can also be called when we are outside of a drag event, when we want 2749 * to add an item to one of the workspace screens. 2750 */ 2751 private void onDropExternal(int x, int y, Object dragInfo, 2752 CellLayout cellLayout, boolean insertAtFirst) { 2753 int screen = indexOfChild(cellLayout); 2754 if (dragInfo instanceof PendingAddItemInfo) { 2755 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2756 // When dragging and dropping from customization tray, we deal with creating 2757 // widgets/shortcuts/folders in a slightly different way 2758 // Only set touchXY if you are supporting spring loaded adding of items 2759 int[] touchXY = new int[2]; 2760 touchXY[0] = mSpringLoadedDropX; 2761 touchXY[1] = mSpringLoadedDropY; 2762 switch (info.itemType) { 2763 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2764 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2765 break; 2766 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2767 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2768 break; 2769 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2770 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2771 break; 2772 default: 2773 throw new IllegalStateException("Unknown item type: " + info.itemType); 2774 } 2775 cellLayout.onDragExit(); 2776 } else { 2777 // This is for other drag/drop cases, like dragging from All Apps 2778 ItemInfo info = (ItemInfo) dragInfo; 2779 View view = null; 2780 2781 switch (info.itemType) { 2782 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2783 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2784 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2785 // Came from all apps -- make a copy 2786 info = new ShortcutInfo((ApplicationInfo) info); 2787 } 2788 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2789 (ShortcutInfo) info); 2790 break; 2791 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2792 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2793 cellLayout, (UserFolderInfo) info, mIconCache); 2794 break; 2795 default: 2796 throw new IllegalStateException("Unknown item type: " + info.itemType); 2797 } 2798 2799 mTargetCell = new int[2]; 2800 if (x != -1 && y != -1) { 2801 // when dragging and dropping, just find the closest free spot 2802 2803 // When we get a drop in Spring Loaded mode, at this point we've already called 2804 // onDragExit, which starts us shrinking again and screws up the transforms we 2805 // need to get the right value. Instead, as a temporary solution, we've saved the 2806 // proper point, mSpringLoadedDropX/Y, from the last onDragOver 2807 cellLayout.findNearestVacantArea(mSpringLoadedDropX, mSpringLoadedDropY, 1, 1, mTargetCell); 2808 } else { 2809 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2810 } 2811 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2812 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2813 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2814 cellLayout.onDropChild(view, animateDrop); 2815 cellLayout.animateDrop(); 2816 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2817 2818 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2819 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2820 lp.cellX, lp.cellY); 2821 } 2822 } 2823 2824 /** 2825 * Return the current {@link CellLayout}, correctly picking the destination 2826 * screen while a scroll is in progress. 2827 */ 2828 private CellLayout getCurrentDropLayout() { 2829 // if we're currently small, use findMatchingPageForDragOver instead 2830 if (mIsSmall) return null; 2831 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2832 return (CellLayout) getChildAt(index); 2833 } 2834 2835 /** 2836 * Return the current CellInfo describing our current drag; this method exists 2837 * so that Launcher can sync this object with the correct info when the activity is created/ 2838 * destroyed 2839 * 2840 */ 2841 public CellLayout.CellInfo getDragInfo() { 2842 return mDragInfo; 2843 } 2844 2845 /** 2846 * Calculate the nearest cell where the given object would be dropped. 2847 */ 2848 private int[] findNearestVacantArea(int pixelX, int pixelY, 2849 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2850 2851 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2852 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2853 2854 // Find the best target drop location 2855 return layout.findNearestVacantArea( 2856 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2857 } 2858 2859 void setLauncher(Launcher launcher) { 2860 mLauncher = launcher; 2861 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2862 2863 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2864 if (mCustomizationDrawer != null) { 2865 mCustomizationDrawerContent = 2866 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2867 } 2868 } 2869 2870 public void setDragController(DragController dragController) { 2871 mDragController = dragController; 2872 } 2873 2874 /** 2875 * Called at the end of a drag which originated on the workspace. 2876 */ 2877 public void onDropCompleted(View target, boolean success) { 2878 if (success) { 2879 if (target != this && mDragInfo != null) { 2880 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2881 cellLayout.removeView(mDragInfo.cell); 2882 if (mDragInfo.cell instanceof DropTarget) { 2883 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2884 } 2885 // final Object tag = mDragInfo.cell.getTag(); 2886 } 2887 } else if (mDragInfo != null) { 2888 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2889 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2890 // moved into DragController.cancelDrag(). 2891 doDragExit(); 2892 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 2893 } 2894 mLauncher.unlockScreenOrientation(); 2895 mDragOutline = null; 2896 mDragInfo = null; 2897 } 2898 2899 @Override 2900 public void onDragViewVisible() { 2901 ((View) mDragInfo.cell).setVisibility(View.GONE); 2902 } 2903 2904 public boolean isDropEnabled() { 2905 return true; 2906 } 2907 2908 @Override 2909 protected void onRestoreInstanceState(Parcelable state) { 2910 super.onRestoreInstanceState(state); 2911 Launcher.setScreen(mCurrentPage); 2912 } 2913 2914 @Override 2915 public void scrollLeft() { 2916 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2917 super.scrollLeft(); 2918 } 2919 } 2920 2921 @Override 2922 public void scrollRight() { 2923 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2924 super.scrollRight(); 2925 } 2926 } 2927 2928 @Override 2929 public void onEnterScrollArea(int direction) { 2930 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2931 mInScrollArea = true; 2932 mPendingScrollDirection = direction; 2933 2934 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2935 final CellLayout layout = (CellLayout) getChildAt(page); 2936 2937 if (layout != null) { 2938 layout.setIsDragOverlapping(true); 2939 2940 if (mDragTargetLayout != null) { 2941 mDragTargetLayout.onDragExit(); 2942 mDragTargetLayout = null; 2943 } 2944 // In portrait, need to redraw the edge glow when entering the scroll area 2945 if (getHeight() > getWidth()) { 2946 invalidate(); 2947 } 2948 } 2949 } 2950 } 2951 2952 private void clearAllHovers() { 2953 final int childCount = getChildCount(); 2954 for (int i = 0; i < childCount; i++) { 2955 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2956 } 2957 mSpringLoadedDragController.onDragExit(); 2958 2959 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 2960 // so we need to redraw the workspace when this may have changed. 2961 if (getHeight() > getWidth()) { 2962 invalidate(); 2963 } 2964 } 2965 2966 @Override 2967 public void onExitScrollArea() { 2968 if (mInScrollArea) { 2969 mInScrollArea = false; 2970 mPendingScrollDirection = DragController.SCROLL_NONE; 2971 clearAllHovers(); 2972 } 2973 } 2974 2975 public Folder getFolderForTag(Object tag) { 2976 final int screenCount = getChildCount(); 2977 for (int screen = 0; screen < screenCount; screen++) { 2978 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 2979 int count = currentScreen.getChildCount(); 2980 for (int i = 0; i < count; i++) { 2981 View child = currentScreen.getChildAt(i); 2982 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2983 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2984 Folder f = (Folder) child; 2985 if (f.getInfo() == tag && f.getInfo().opened) { 2986 return f; 2987 } 2988 } 2989 } 2990 } 2991 return null; 2992 } 2993 2994 public View getViewForTag(Object tag) { 2995 int screenCount = getChildCount(); 2996 for (int screen = 0; screen < screenCount; screen++) { 2997 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 2998 int count = currentScreen.getChildCount(); 2999 for (int i = 0; i < count; i++) { 3000 View child = currentScreen.getChildAt(i); 3001 if (child.getTag() == tag) { 3002 return child; 3003 } 3004 } 3005 } 3006 return null; 3007 } 3008 3009 3010 void removeItems(final ArrayList<ApplicationInfo> apps) { 3011 final int screenCount = getChildCount(); 3012 final PackageManager manager = getContext().getPackageManager(); 3013 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3014 3015 final HashSet<String> packageNames = new HashSet<String>(); 3016 final int appCount = apps.size(); 3017 for (int i = 0; i < appCount; i++) { 3018 packageNames.add(apps.get(i).componentName.getPackageName()); 3019 } 3020 3021 for (int i = 0; i < screenCount; i++) { 3022 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3023 final ViewGroup layout = layoutParent.getChildrenLayout(); 3024 3025 // Avoid ANRs by treating each screen separately 3026 post(new Runnable() { 3027 public void run() { 3028 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3029 childrenToRemove.clear(); 3030 3031 int childCount = layout.getChildCount(); 3032 for (int j = 0; j < childCount; j++) { 3033 final View view = layout.getChildAt(j); 3034 Object tag = view.getTag(); 3035 3036 if (tag instanceof ShortcutInfo) { 3037 final ShortcutInfo info = (ShortcutInfo) tag; 3038 final Intent intent = info.intent; 3039 final ComponentName name = intent.getComponent(); 3040 3041 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3042 for (String packageName: packageNames) { 3043 if (packageName.equals(name.getPackageName())) { 3044 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3045 childrenToRemove.add(view); 3046 } 3047 } 3048 } 3049 } else if (tag instanceof UserFolderInfo) { 3050 final UserFolderInfo info = (UserFolderInfo) tag; 3051 final ArrayList<ShortcutInfo> contents = info.contents; 3052 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3053 final int contentsCount = contents.size(); 3054 boolean removedFromFolder = false; 3055 3056 for (int k = 0; k < contentsCount; k++) { 3057 final ShortcutInfo appInfo = contents.get(k); 3058 final Intent intent = appInfo.intent; 3059 final ComponentName name = intent.getComponent(); 3060 3061 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3062 for (String packageName: packageNames) { 3063 if (packageName.equals(name.getPackageName())) { 3064 toRemove.add(appInfo); 3065 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3066 removedFromFolder = true; 3067 } 3068 } 3069 } 3070 } 3071 3072 contents.removeAll(toRemove); 3073 if (removedFromFolder) { 3074 final Folder folder = getOpenFolder(); 3075 if (folder != null) 3076 folder.notifyDataSetChanged(); 3077 } 3078 } else if (tag instanceof LiveFolderInfo) { 3079 final LiveFolderInfo info = (LiveFolderInfo) tag; 3080 final Uri uri = info.uri; 3081 final ProviderInfo providerInfo = manager.resolveContentProvider( 3082 uri.getAuthority(), 0); 3083 3084 if (providerInfo != null) { 3085 for (String packageName: packageNames) { 3086 if (packageName.equals(providerInfo.packageName)) { 3087 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3088 childrenToRemove.add(view); 3089 } 3090 } 3091 } 3092 } else if (tag instanceof LauncherAppWidgetInfo) { 3093 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3094 final AppWidgetProviderInfo provider = 3095 widgets.getAppWidgetInfo(info.appWidgetId); 3096 if (provider != null) { 3097 for (String packageName: packageNames) { 3098 if (packageName.equals(provider.provider.getPackageName())) { 3099 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3100 childrenToRemove.add(view); 3101 } 3102 } 3103 } 3104 } 3105 } 3106 3107 childCount = childrenToRemove.size(); 3108 for (int j = 0; j < childCount; j++) { 3109 View child = childrenToRemove.get(j); 3110 // Note: We can not remove the view directly from CellLayoutChildren as this 3111 // does not re-mark the spaces as unoccupied. 3112 layoutParent.removeViewInLayout(child); 3113 if (child instanceof DropTarget) { 3114 mDragController.removeDropTarget((DropTarget)child); 3115 } 3116 } 3117 3118 if (childCount > 0) { 3119 layout.requestLayout(); 3120 layout.invalidate(); 3121 } 3122 } 3123 }); 3124 } 3125 } 3126 3127 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3128 final int screenCount = getChildCount(); 3129 for (int i = 0; i < screenCount; i++) { 3130 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3131 int childCount = layout.getChildCount(); 3132 for (int j = 0; j < childCount; j++) { 3133 final View view = layout.getChildAt(j); 3134 Object tag = view.getTag(); 3135 if (tag instanceof ShortcutInfo) { 3136 ShortcutInfo info = (ShortcutInfo)tag; 3137 // We need to check for ACTION_MAIN otherwise getComponent() might 3138 // return null for some shortcuts (for instance, for shortcuts to 3139 // web pages.) 3140 final Intent intent = info.intent; 3141 final ComponentName name = intent.getComponent(); 3142 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3143 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3144 final int appCount = apps.size(); 3145 for (int k = 0; k < appCount; k++) { 3146 ApplicationInfo app = apps.get(k); 3147 if (app.componentName.equals(name)) { 3148 info.setIcon(mIconCache.getIcon(info.intent)); 3149 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3150 new FastBitmapDrawable(info.getIcon(mIconCache)), 3151 null, null); 3152 } 3153 } 3154 } 3155 } 3156 } 3157 } 3158 } 3159 3160 void moveToDefaultScreen(boolean animate) { 3161 if (mIsSmall || mIsInUnshrinkAnimation) { 3162 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3163 } else if (animate) { 3164 snapToPage(mDefaultPage); 3165 } else { 3166 setCurrentPage(mDefaultPage); 3167 } 3168 getChildAt(mDefaultPage).requestFocus(); 3169 } 3170 3171 void setIndicators(Drawable previous, Drawable next) { 3172 mPreviousIndicator = previous; 3173 mNextIndicator = next; 3174 previous.setLevel(mCurrentPage); 3175 next.setLevel(mCurrentPage); 3176 } 3177 3178 @Override 3179 public void syncPages() { 3180 } 3181 3182 @Override 3183 public void syncPageItems(int page) { 3184 } 3185 3186} 3187