Workspace.java revision c3bc26031cc5b36328bd7cdbcf04ff269dea11a5
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.TimeInterpolator; 27import android.animation.ValueAnimator; 28import android.animation.Animator.AnimatorListener; 29import android.animation.ValueAnimator.AnimatorUpdateListener; 30import android.app.AlertDialog; 31import android.app.WallpaperManager; 32import android.appwidget.AppWidgetManager; 33import android.appwidget.AppWidgetProviderInfo; 34import android.content.ClipData; 35import android.content.ClipDescription; 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.PackageManager; 40import android.content.pm.ProviderInfo; 41import android.content.res.Resources; 42import android.content.res.TypedArray; 43import android.graphics.Bitmap; 44import android.graphics.Camera; 45import android.graphics.Canvas; 46import android.graphics.Matrix; 47import android.graphics.Paint; 48import android.graphics.Rect; 49import android.graphics.RectF; 50import android.graphics.Region.Op; 51import android.graphics.drawable.Drawable; 52import android.net.Uri; 53import android.os.IBinder; 54import android.os.Parcelable; 55import android.util.AttributeSet; 56import android.util.Log; 57import android.util.Pair; 58import android.view.Display; 59import android.view.DragEvent; 60import android.view.MotionEvent; 61import android.view.View; 62import android.view.ViewGroup; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TabHost; 65import android.widget.TabWidget; 66import android.widget.TextView; 67import android.widget.Toast; 68 69import java.util.ArrayList; 70import java.util.HashSet; 71import java.util.List; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 View.OnClickListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // This is how much the workspace shrinks when we enter all apps or 85 // customization mode 86 private static final float SHRINK_FACTOR = 0.16f; 87 88 // How much the screens shrink when we enter spring loaded drag mode 89 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 90 91 // Y rotation to apply to the workspace screens 92 private static final float WORKSPACE_ROTATION = 12.5f; 93 94 // These are extra scale factors to apply to the mini home screens 95 // so as to achieve the desired transform 96 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 97 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 98 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 99 100 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 101 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 102 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 103 104 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 105 private static final int BACKGROUND_FADE_IN_DURATION = 350; 106 107 // These animators are used to fade the children's outlines 108 private ObjectAnimator mChildrenOutlineFadeInAnimation; 109 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 110 private float mChildrenOutlineAlpha = 0; 111 112 // These properties refer to the background protection gradient used for AllApps and Customize 113 private ValueAnimator mBackgroundFadeInAnimation; 114 private ValueAnimator mBackgroundFadeOutAnimation; 115 private Drawable mBackground; 116 private Drawable mCustomizeTrayBackground; 117 boolean mDrawBackground = true; 118 private boolean mDrawCustomizeTrayBackground; 119 private float mBackgroundAlpha = 0; 120 private float mOverScrollMaxBackgroundAlpha = 0.0f; 121 private int mOverScrollPageIndex = -1; 122 123 private View mCustomizationDrawer; 124 private View mCustomizationDrawerContent; 125 private int[] mCustomizationDrawerPos = new int[2]; 126 private float[] mCustomizationDrawerTransformedPos = new float[2]; 127 128 private final WallpaperManager mWallpaperManager; 129 private IBinder mWindowToken; 130 131 private int mDefaultPage; 132 133 private boolean mIsDragInProcess = false; 134 135 /** 136 * CellInfo for the cell that is currently being dragged 137 */ 138 private CellLayout.CellInfo mDragInfo; 139 140 /** 141 * Target drop area calculated during last acceptDrop call. 142 */ 143 private int[] mTargetCell = null; 144 145 /** 146 * The CellLayout that is currently being dragged over 147 */ 148 private CellLayout mDragTargetLayout = null; 149 150 private Launcher mLauncher; 151 private IconCache mIconCache; 152 private DragController mDragController; 153 154 // These are temporary variables to prevent having to allocate a new object just to 155 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 156 private int[] mTempCell = new int[2]; 157 private int[] mTempEstimate = new int[2]; 158 private float[] mTempOriginXY = new float[2]; 159 private float[] mTempDragCoordinates = new float[2]; 160 private float[] mTempTouchCoordinates = new float[2]; 161 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 162 private float[] mTempDragBottomRightCoordinates = new float[2]; 163 private Matrix mTempInverseMatrix = new Matrix(); 164 165 private SpringLoadedDragController mSpringLoadedDragController; 166 167 private static final int DEFAULT_CELL_COUNT_X = 4; 168 private static final int DEFAULT_CELL_COUNT_Y = 4; 169 170 private Drawable mPreviousIndicator; 171 private Drawable mNextIndicator; 172 173 // State variable that indicates whether the pages are small (ie when you're 174 // in all apps or customize mode) 175 private boolean mIsSmall = false; 176 private boolean mIsInUnshrinkAnimation = false; 177 private AnimatorListener mShrinkAnimationListener; 178 private AnimatorListener mUnshrinkAnimationListener; 179 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 180 private ShrinkState mShrinkState; 181 private boolean mWasSpringLoadedOnDragExit = false; 182 private boolean mWaitingToShrink = false; 183 private ShrinkState mWaitingToShrinkState; 184 private AnimatorSet mAnimator; 185 186 /** Is the user is dragging an item near the edge of a page? */ 187 private boolean mInScrollArea = false; 188 189 /** If mInScrollArea is true, the direction of the scroll. */ 190 private int mPendingScrollDirection = DragController.SCROLL_NONE; 191 192 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 193 private Bitmap mDragOutline = null; 194 private final Rect mTempRect = new Rect(); 195 private final int[] mTempXY = new int[2]; 196 197 private ValueAnimator mDropAnim = null; 198 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 199 private View mDropView = null; 200 private int[] mDropViewPos = new int[] { -1, -1 }; 201 202 // Paint used to draw external drop outline 203 private final Paint mExternalDragOutlinePaint = new Paint(); 204 205 // Camera and Matrix used to determine the final position of a neighboring CellLayout 206 private final Matrix mMatrix = new Matrix(); 207 private final Camera mCamera = new Camera(); 208 private final float mTempFloat2[] = new float[2]; 209 210 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 211 int mWallpaperWidth; 212 int mWallpaperHeight; 213 WallpaperOffsetInterpolator mWallpaperOffset; 214 boolean mUpdateWallpaperOffsetImmediately = false; 215 boolean mSyncWallpaperOffsetWithScroll = true; 216 private Runnable mDelayedResizeRunnable; 217 218 // info about the last drag 219 private DragView mLastDragView; 220 private int mLastDragOriginX; 221 private int mLastDragOriginY; 222 private int mLastDragXOffset; 223 private int mLastDragYOffset; 224 225 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 226 private float mXDown; 227 private float mYDown; 228 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 229 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 230 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 231 232 /** 233 * Used to inflate the Workspace from XML. 234 * 235 * @param context The application's context. 236 * @param attrs The attributes set containing the Workspace's customization values. 237 */ 238 public Workspace(Context context, AttributeSet attrs) { 239 this(context, attrs, 0); 240 } 241 242 /** 243 * Used to inflate the Workspace from XML. 244 * 245 * @param context The application's context. 246 * @param attrs The attributes set containing the Workspace's customization values. 247 * @param defStyle Unused. 248 */ 249 public Workspace(Context context, AttributeSet attrs, int defStyle) { 250 super(context, attrs, defStyle); 251 mContentIsRefreshable = false; 252 253 if (!LauncherApplication.isScreenXLarge()) { 254 mFadeInAdjacentScreens = false; 255 } 256 257 mWallpaperManager = WallpaperManager.getInstance(context); 258 259 TypedArray a = context.obtainStyledAttributes(attrs, 260 R.styleable.Workspace, defStyle, 0); 261 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 262 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 263 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 264 a.recycle(); 265 266 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 267 setHapticFeedbackEnabled(false); 268 269 initWorkspace(); 270 271 // Disable multitouch across the workspace/all apps/customize tray 272 setMotionEventSplittingEnabled(true); 273 } 274 275 /** 276 * Initializes various states for this workspace. 277 */ 278 protected void initWorkspace() { 279 Context context = getContext(); 280 mCurrentPage = mDefaultPage; 281 Launcher.setScreen(mCurrentPage); 282 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 283 mIconCache = app.getIconCache(); 284 mExternalDragOutlinePaint.setAntiAlias(true); 285 setWillNotDraw(false); 286 287 try { 288 final Resources res = getResources(); 289 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 290 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 291 } catch (Resources.NotFoundException e) { 292 // In this case, we will skip drawing background protection 293 } 294 295 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 296 @Override 297 public void onAnimationStart(Animator animation) { 298 mIsInUnshrinkAnimation = true; 299 } 300 301 @Override 302 public void onAnimationEnd(Animator animation) { 303 mIsInUnshrinkAnimation = false; 304 mSyncWallpaperOffsetWithScroll = true; 305 if (mShrinkState == ShrinkState.SPRING_LOADED) { 306 View layout = null; 307 if (mLastDragView != null) { 308 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 309 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 310 } 311 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 312 } else { 313 mDrawCustomizeTrayBackground = false; 314 } 315 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 316 mAnimator = null; 317 enableChildrenLayers(false); 318 } 319 }; 320 mShrinkAnimationListener = new AnimatorListenerAdapter() { 321 @Override 322 public void onAnimationStart(Animator animation) { 323 enableChildrenLayers(true); 324 } 325 @Override 326 public void onAnimationEnd(Animator animation) { 327 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 328 mAnimator = null; 329 } 330 }; 331 mSnapVelocity = 600; 332 mWallpaperOffset = new WallpaperOffsetInterpolator(); 333 } 334 335 @Override 336 protected int getScrollMode() { 337 if (LauncherApplication.isScreenXLarge()) { 338 return SmoothPagedView.X_LARGE_MODE; 339 } else { 340 return SmoothPagedView.DEFAULT_MODE; 341 } 342 } 343 344 @Override 345 public void addView(View child, int index, LayoutParams params) { 346 if (!(child instanceof CellLayout)) { 347 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 348 } 349 ((CellLayout) child).setOnInterceptTouchListener(this); 350 child.setOnClickListener(this); 351 child.setClickable(true); 352 super.addView(child, index, params); 353 } 354 355 @Override 356 public void addView(View child) { 357 if (!(child instanceof CellLayout)) { 358 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 359 } 360 ((CellLayout) child).setOnInterceptTouchListener(this); 361 child.setOnClickListener(this); 362 child.setClickable(true); 363 super.addView(child); 364 } 365 366 @Override 367 public void addView(View child, int index) { 368 if (!(child instanceof CellLayout)) { 369 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 370 } 371 ((CellLayout) child).setOnInterceptTouchListener(this); 372 child.setOnClickListener(this); 373 child.setClickable(true); 374 super.addView(child, index); 375 } 376 377 @Override 378 public void addView(View child, int width, int height) { 379 if (!(child instanceof CellLayout)) { 380 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 381 } 382 ((CellLayout) child).setOnInterceptTouchListener(this); 383 child.setOnClickListener(this); 384 child.setClickable(true); 385 super.addView(child, width, height); 386 } 387 388 @Override 389 public void addView(View child, LayoutParams params) { 390 if (!(child instanceof CellLayout)) { 391 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 392 } 393 ((CellLayout) child).setOnInterceptTouchListener(this); 394 child.setOnClickListener(this); 395 child.setClickable(true); 396 super.addView(child, params); 397 } 398 399 /** 400 * @return The open folder on the current screen, or null if there is none 401 */ 402 Folder getOpenFolder() { 403 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 404 int count = currentPage.getChildCount(); 405 for (int i = 0; i < count; i++) { 406 View child = currentPage.getChildAt(i); 407 if (child instanceof Folder) { 408 Folder folder = (Folder) child; 409 if (folder.getInfo().opened) 410 return folder; 411 } 412 } 413 return null; 414 } 415 416 ArrayList<Folder> getOpenFolders() { 417 final int screenCount = getChildCount(); 418 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 419 420 for (int screen = 0; screen < screenCount; screen++) { 421 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 422 int count = currentPage.getChildCount(); 423 for (int i = 0; i < count; i++) { 424 View child = currentPage.getChildAt(i); 425 if (child instanceof Folder) { 426 Folder folder = (Folder) child; 427 if (folder.getInfo().opened) 428 folders.add(folder); 429 break; 430 } 431 } 432 } 433 return folders; 434 } 435 436 boolean isTouchActive() { 437 return mTouchState != TOUCH_STATE_REST; 438 } 439 440 /** 441 * Adds the specified child in the specified screen. The position and dimension of 442 * the child are defined by x, y, spanX and spanY. 443 * 444 * @param child The child to add in one of the workspace's screens. 445 * @param screen The screen in which to add the child. 446 * @param x The X position of the child in the screen's grid. 447 * @param y The Y position of the child in the screen's grid. 448 * @param spanX The number of cells spanned horizontally by the child. 449 * @param spanY The number of cells spanned vertically by the child. 450 */ 451 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 452 addInScreen(child, screen, x, y, spanX, spanY, false); 453 } 454 455 void addInFullScreen(View child, int screen) { 456 addInScreen(child, screen, 0, 0, -1, -1); 457 } 458 459 /** 460 * Adds the specified child in the specified screen. The position and dimension of 461 * the child are defined by x, y, spanX and spanY. 462 * 463 * @param child The child to add in one of the workspace's screens. 464 * @param screen The screen in which to add the child. 465 * @param x The X position of the child in the screen's grid. 466 * @param y The Y position of the child in the screen's grid. 467 * @param spanX The number of cells spanned horizontally by the child. 468 * @param spanY The number of cells spanned vertically by the child. 469 * @param insert When true, the child is inserted at the beginning of the children list. 470 */ 471 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 472 if (screen < 0 || screen >= getChildCount()) { 473 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 474 + " (was " + screen + "); skipping child"); 475 return; 476 } 477 478 final CellLayout group = (CellLayout) getChildAt(screen); 479 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 480 if (lp == null) { 481 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 482 } else { 483 lp.cellX = x; 484 lp.cellY = y; 485 lp.cellHSpan = spanX; 486 lp.cellVSpan = spanY; 487 } 488 489 // Get the canonical child id to uniquely represent this view in this screen 490 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 491 boolean markCellsAsOccupied = !(child instanceof Folder); 492 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 493 // TODO: This branch occurs when the workspace is adding views 494 // outside of the defined grid 495 // maybe we should be deleting these items from the LauncherModel? 496 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 497 } 498 499 if (!(child instanceof Folder)) { 500 child.setHapticFeedbackEnabled(false); 501 child.setOnLongClickListener(mLongClickListener); 502 } 503 if (child instanceof DropTarget) { 504 mDragController.addDropTarget((DropTarget) child); 505 } 506 } 507 508 /** 509 * Check if the point (x, y) hits a given page. 510 */ 511 private boolean hitsPage(int index, float x, float y) { 512 final View page = getChildAt(index); 513 if (page != null) { 514 float[] localXY = { x, y }; 515 mapPointFromSelfToChild(page, localXY); 516 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 517 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 518 } 519 return false; 520 } 521 522 @Override 523 protected boolean hitsPreviousPage(float x, float y) { 524 // mNextPage is set to INVALID_PAGE whenever we are stationary. 525 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 526 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 527 return hitsPage(current - 1, x, y); 528 } 529 530 @Override 531 protected boolean hitsNextPage(float x, float y) { 532 // mNextPage is set to INVALID_PAGE whenever we are stationary. 533 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 534 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 535 return hitsPage(current + 1, x, y); 536 } 537 538 /** 539 * Called directly from a CellLayout (not by the framework), after we've been added as a 540 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 541 * that it should intercept touch events, which is not something that is normally supported. 542 */ 543 @Override 544 public boolean onTouch(View v, MotionEvent event) { 545 return (mIsSmall || mIsInUnshrinkAnimation); 546 } 547 548 /** 549 * Handle a click event on a CellLayout. 550 */ 551 @Override 552 public void onClick(View cellLayout) { 553 // Only allow clicks on a CellLayout if it is shrunken and visible. 554 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 555 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 556 } 557 } 558 559 protected void onWindowVisibilityChanged (int visibility) { 560 mLauncher.onWindowVisibilityChanged(visibility); 561 } 562 563 @Override 564 public boolean dispatchUnhandledMove(View focused, int direction) { 565 if (mIsSmall || mIsInUnshrinkAnimation) { 566 // when the home screens are shrunken, shouldn't allow side-scrolling 567 return false; 568 } 569 return super.dispatchUnhandledMove(focused, direction); 570 } 571 572 @Override 573 public boolean onInterceptTouchEvent(MotionEvent ev) { 574 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 575 mXDown = ev.getX(); 576 mYDown = ev.getY(); 577 } 578 579 if (mIsSmall || mIsInUnshrinkAnimation) { 580 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 581 // Intercept this event so we can show the workspace in full view 582 // when it is clicked on and it is small 583 AllAppsPagedView allApps = (AllAppsPagedView) 584 mLauncher.findViewById(R.id.all_apps_paged_view); 585 if (allApps != null) { 586 allApps.onInterceptTouchEvent(ev); 587 } 588 return true; 589 } 590 return false; 591 } 592 return super.onInterceptTouchEvent(ev); 593 } 594 595 @Override 596 protected void determineScrollingStart(MotionEvent ev) { 597 if (!mIsSmall && !mIsInUnshrinkAnimation) { 598 float deltaX = Math.abs(ev.getX() - mXDown); 599 float deltaY = Math.abs(ev.getY() - mYDown); 600 601 if (Float.compare(deltaX, 0f) == 0) return; 602 603 float slope = deltaY / deltaX; 604 float theta = (float) Math.atan(slope); 605 606 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 607 cancelCurrentPageLongPress(); 608 } 609 610 if (theta > MAX_SWIPE_ANGLE) { 611 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 612 return; 613 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 614 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 615 // increase the touch slop to make it harder to begin scrolling the workspace. This 616 // results in vertically scrolling widgets to more easily. The higher the angle, the 617 // more we increase touch slop. 618 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 619 float extraRatio = (float) 620 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 621 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 622 } else { 623 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 624 super.determineScrollingStart(ev); 625 } 626 } 627 } 628 629 protected void onPageBeginMoving() { 630 if (mNextPage != INVALID_PAGE) { 631 // we're snapping to a particular screen 632 enableChildrenCache(mCurrentPage, mNextPage); 633 } else { 634 // this is when user is actively dragging a particular screen, they might 635 // swipe it either left or right (but we won't advance by more than one screen) 636 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 637 } 638 showOutlines(); 639 } 640 641 protected void onPageEndMoving() { 642 clearChildrenCache(); 643 // Hide the outlines, as long as we're not dragging 644 if (!mDragController.dragging()) { 645 hideOutlines(); 646 } 647 mOverScrollMaxBackgroundAlpha = 0.0f; 648 mOverScrollPageIndex = -1; 649 650 if (mDelayedResizeRunnable != null) { 651 mDelayedResizeRunnable.run(); 652 mDelayedResizeRunnable = null; 653 } 654 } 655 656 @Override 657 protected void notifyPageSwitchListener() { 658 super.notifyPageSwitchListener(); 659 660 if (mPreviousIndicator != null) { 661 // if we know the next page, we show the indication for it right away; it looks 662 // weird if the indicators are lagging 663 int page = mNextPage; 664 if (page == INVALID_PAGE) { 665 page = mCurrentPage; 666 } 667 mPreviousIndicator.setLevel(page); 668 mNextIndicator.setLevel(page); 669 } 670 Launcher.setScreen(mCurrentPage); 671 }; 672 673 // As a ratio of screen height, the total distance we want the parallax effect to span 674 // vertically 675 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 676 return 1.1f; 677 } 678 679 // As a ratio of screen height, the total distance we want the parallax effect to span 680 // horizontally 681 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 682 float aspectRatio = width / (float) height; 683 684 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 685 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 686 // We will use these two data points to extrapolate how much the wallpaper parallax effect 687 // to span (ie travel) at any aspect ratio: 688 689 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 690 final float ASPECT_RATIO_PORTRAIT = 10/16f; 691 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 692 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 693 694 // To find out the desired width at different aspect ratios, we use the following two 695 // formulas, where the coefficient on x is the aspect ratio (width/height): 696 // (16/10)x + y = 1.5 697 // (10/16)x + y = 1.2 698 // We solve for x and y and end up with a final formula: 699 final float x = 700 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 701 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 702 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 703 return x * aspectRatio + y; 704 } 705 706 // The range of scroll values for Workspace 707 private int getScrollRange() { 708 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 709 } 710 711 protected void setWallpaperDimension() { 712 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 713 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 714 final int minDim = Math.min(display.getWidth(), display.getHeight()); 715 716 // We need to ensure that there is enough extra space in the wallpaper for the intended 717 // parallax effects 718 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 719 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 720 new Thread("setWallpaperDimension") { 721 public void run() { 722 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 723 } 724 }.start(); 725 } 726 727 public void setVerticalWallpaperOffset(float offset) { 728 mWallpaperOffset.setFinalY(offset); 729 } 730 public float getVerticalWallpaperOffset() { 731 return mWallpaperOffset.getCurrY(); 732 } 733 public void setHorizontalWallpaperOffset(float offset) { 734 mWallpaperOffset.setFinalX(offset); 735 } 736 public float getHorizontalWallpaperOffset() { 737 return mWallpaperOffset.getCurrX(); 738 } 739 740 private float wallpaperOffsetForCurrentScroll() { 741 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 742 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 743 // The wallpaper travel width is how far, from left to right, the wallpaper will move 744 // at this orientation (for example, in portrait mode we don't move all the way to the 745 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 746 int wallpaperTravelWidth = (int) (display.getWidth() * 747 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 748 if (!isStaticWallpaper) { 749 wallpaperTravelWidth = mWallpaperWidth; 750 } 751 752 // Set wallpaper offset steps (1 / (number of screens - 1)) 753 // We have 3 vertical offset states (centered, and then top/bottom aligned 754 // for all apps/customize) 755 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 756 757 int scrollRange = getScrollRange(); 758 float scrollProgressOffset = 0; 759 760 // Account for overscroll: you only see the absolute edge of the wallpaper if 761 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 762 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 763 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 764 if (isStaticWallpaper) { 765 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 766 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 767 scrollRange += 2 * overscrollOffset; 768 } 769 770 float scrollProgress = 771 mScrollX / (float) scrollRange + scrollProgressOffset; 772 float offsetInDips = wallpaperTravelWidth * scrollProgress + 773 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 774 float offset = offsetInDips / (float) mWallpaperWidth; 775 return offset; 776 } 777 private void syncWallpaperOffsetWithScroll() { 778 if (LauncherApplication.isScreenXLarge()) { 779 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 780 } 781 } 782 783 public void updateWallpaperOffsetImmediately() { 784 mUpdateWallpaperOffsetImmediately = true; 785 } 786 787 private void updateWallpaperOffsets() { 788 boolean updateNow = false; 789 boolean keepUpdating = true; 790 if (mUpdateWallpaperOffsetImmediately) { 791 updateNow = true; 792 keepUpdating = false; 793 mWallpaperOffset.jumpToFinal(); 794 mUpdateWallpaperOffsetImmediately = false; 795 } else { 796 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 797 } 798 if (updateNow) { 799 if (mWindowToken != null) { 800 mWallpaperManager.setWallpaperOffsets(mWindowToken, 801 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 802 } 803 } 804 if (keepUpdating) { 805 fastInvalidate(); 806 } 807 } 808 809 class WallpaperOffsetInterpolator { 810 float mFinalHorizontalWallpaperOffset = 0.0f; 811 float mFinalVerticalWallpaperOffset = 0.5f; 812 float mHorizontalWallpaperOffset = 0.0f; 813 float mVerticalWallpaperOffset = 0.5f; 814 long mLastWallpaperOffsetUpdateTime; 815 boolean mIsMovingFast; 816 boolean mOverrideHorizontalCatchupConstant; 817 float mHorizontalCatchupConstant = 0.35f; 818 float mVerticalCatchupConstant = 0.35f; 819 820 public WallpaperOffsetInterpolator() { 821 } 822 823 public void setOverrideHorizontalCatchupConstant(boolean override) { 824 mOverrideHorizontalCatchupConstant = override; 825 } 826 827 public void setHorizontalCatchupConstant(float f) { 828 mHorizontalCatchupConstant = f; 829 } 830 831 public void setVerticalCatchupConstant(float f) { 832 mVerticalCatchupConstant = f; 833 } 834 835 public boolean computeScrollOffset() { 836 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 837 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 838 mIsMovingFast = false; 839 return false; 840 } 841 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 842 boolean isLandscape = display.getWidth() > display.getHeight(); 843 844 long currentTime = System.currentTimeMillis(); 845 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 846 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 847 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 848 849 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 850 if (!mIsMovingFast && xdiff > 0.07) { 851 mIsMovingFast = true; 852 } 853 854 float fractionToCatchUpIn1MsHorizontal; 855 if (mOverrideHorizontalCatchupConstant) { 856 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 857 } else if (mIsMovingFast) { 858 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 859 } else { 860 // slow 861 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 862 } 863 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 864 865 866 fractionToCatchUpIn1MsHorizontal /= 33f; 867 fractionToCatchUpIn1MsVertical /= 33f; 868 869 final float UPDATE_THRESHOLD = 0.00001f; 870 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 871 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 872 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 873 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 874 if (jumpToFinalValue) { 875 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 876 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 877 } else { 878 float percentToCatchUpVertical = 879 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 880 float percentToCatchUpHorizontal = 881 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 882 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 883 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 884 } 885 886 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 887 return true; 888 } 889 890 public float getCurrX() { 891 return mHorizontalWallpaperOffset; 892 } 893 894 public float getFinalX() { 895 return mFinalHorizontalWallpaperOffset; 896 } 897 898 public float getCurrY() { 899 return mVerticalWallpaperOffset; 900 } 901 902 public float getFinalY() { 903 return mFinalVerticalWallpaperOffset; 904 } 905 906 public void setFinalX(float x) { 907 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 908 } 909 910 public void setFinalY(float y) { 911 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 912 } 913 914 public void jumpToFinal() { 915 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 916 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 917 } 918 } 919 920 @Override 921 public void computeScroll() { 922 super.computeScroll(); 923 if (mSyncWallpaperOffsetWithScroll) { 924 syncWallpaperOffsetWithScroll(); 925 } 926 } 927 928 void showOutlines() { 929 if (!mIsSmall && !mIsInUnshrinkAnimation) { 930 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 931 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 932 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 933 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 934 mChildrenOutlineFadeInAnimation.start(); 935 } 936 } 937 938 void hideOutlines() { 939 if (!mIsSmall && !mIsInUnshrinkAnimation) { 940 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 941 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 942 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 943 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 944 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 945 mChildrenOutlineFadeOutAnimation.start(); 946 } 947 } 948 949 public void showOutlinesTemporarily() { 950 if (!mIsPageMoving && !isTouchActive()) { 951 snapToPage(mCurrentPage); 952 } 953 } 954 955 public void setChildrenOutlineAlpha(float alpha) { 956 mChildrenOutlineAlpha = alpha; 957 for (int i = 0; i < getChildCount(); i++) { 958 CellLayout cl = (CellLayout) getChildAt(i); 959 cl.setBackgroundAlpha(alpha); 960 } 961 } 962 963 public float getChildrenOutlineAlpha() { 964 return mChildrenOutlineAlpha; 965 } 966 967 void disableBackground() { 968 mDrawBackground = false; 969 } 970 void enableBackground() { 971 mDrawBackground = true; 972 } 973 974 private void showBackgroundGradientForAllApps() { 975 showBackgroundGradient(); 976 mDrawCustomizeTrayBackground = false; 977 } 978 979 private void showBackgroundGradientForCustomizeTray() { 980 showBackgroundGradient(); 981 mDrawCustomizeTrayBackground = true; 982 } 983 984 private void showBackgroundGradient() { 985 if (mBackground == null) return; 986 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 987 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 988 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 989 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 990 public void onAnimationUpdate(ValueAnimator animation) { 991 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 992 } 993 }); 994 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 995 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 996 mBackgroundFadeInAnimation.start(); 997 } 998 999 private void hideBackgroundGradient() { 1000 if (mBackground == null) return; 1001 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 1002 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 1003 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 1004 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 1005 public void onAnimationUpdate(ValueAnimator animation) { 1006 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1007 } 1008 }); 1009 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1010 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1011 mBackgroundFadeOutAnimation.start(); 1012 } 1013 1014 public void setBackgroundAlpha(float alpha) { 1015 if (alpha != mBackgroundAlpha) { 1016 mBackgroundAlpha = alpha; 1017 invalidate(); 1018 } 1019 } 1020 1021 public float getBackgroundAlpha() { 1022 return mBackgroundAlpha; 1023 } 1024 1025 /** 1026 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1027 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1028 * as being larger. This method computes what offset the rotated view should be translated 1029 * in order to minimize this perceived gap. 1030 * @param degrees Angle of the view 1031 * @param width Width of the view 1032 * @param height Height of the view 1033 * @return Offset to be used in a View.setTranslationX() call 1034 */ 1035 private float getOffsetXForRotation(float degrees, int width, int height) { 1036 mMatrix.reset(); 1037 mCamera.save(); 1038 mCamera.rotateY(Math.abs(degrees)); 1039 mCamera.getMatrix(mMatrix); 1040 mCamera.restore(); 1041 1042 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1043 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1044 mTempFloat2[0] = width; 1045 mTempFloat2[1] = height; 1046 mMatrix.mapPoints(mTempFloat2); 1047 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1048 } 1049 1050 float backgroundAlphaInterpolator(float r) { 1051 float pivotA = 0.1f; 1052 float pivotB = 0.4f; 1053 if (r < pivotA) { 1054 return 0; 1055 } else if (r > pivotB) { 1056 return 1.0f; 1057 } else { 1058 return (r - pivotA)/(pivotB - pivotA); 1059 } 1060 } 1061 1062 float overScrollBackgroundAlphaInterpolator(float r) { 1063 float threshold = 0.08f; 1064 1065 if (r > mOverScrollMaxBackgroundAlpha) { 1066 mOverScrollMaxBackgroundAlpha = r; 1067 } else if (r < mOverScrollMaxBackgroundAlpha) { 1068 r = mOverScrollMaxBackgroundAlpha; 1069 } 1070 1071 return Math.min(r / threshold, 1.0f); 1072 } 1073 1074 @Override 1075 protected void screenScrolled(int screenCenter) { 1076 // If the screen is not xlarge, then don't rotate the CellLayouts 1077 if (!LauncherApplication.isScreenXLarge()) return; 1078 1079 final int halfScreenSize = getMeasuredWidth() / 2; 1080 1081 for (int i = 0; i < getChildCount(); i++) { 1082 CellLayout cl = (CellLayout) getChildAt(i); 1083 if (cl != null) { 1084 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1085 int delta = screenCenter - (getChildOffset(i) - 1086 getRelativeChildOffset(i) + halfScreenSize); 1087 1088 float scrollProgress = delta / (totalDistance * 1.0f); 1089 scrollProgress = Math.min(scrollProgress, 1.0f); 1090 scrollProgress = Math.max(scrollProgress, -1.0f); 1091 1092 // If the current page (i) is being overscrolled, we use a different 1093 // set of rules for setting the background alpha multiplier. 1094 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1095 i == getChildCount() -1 )) { 1096 cl.setBackgroundAlphaMultiplier( 1097 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1098 mOverScrollPageIndex = i; 1099 } else if (mOverScrollPageIndex != i) { 1100 cl.setBackgroundAlphaMultiplier( 1101 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1102 } 1103 1104 float rotation = WORKSPACE_ROTATION * scrollProgress; 1105 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1106 cl.setTranslationX(translationX); 1107 1108 cl.setRotationY(rotation); 1109 } 1110 } 1111 } 1112 1113 protected void onAttachedToWindow() { 1114 super.onAttachedToWindow(); 1115 mWindowToken = getWindowToken(); 1116 computeScroll(); 1117 mDragController.setWindowToken(mWindowToken); 1118 } 1119 1120 protected void onDetachedFromWindow() { 1121 mWindowToken = null; 1122 } 1123 1124 @Override 1125 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1126 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1127 mUpdateWallpaperOffsetImmediately = true; 1128 } 1129 super.onLayout(changed, left, top, right, bottom); 1130 1131 // if shrinkToBottom() is called on initialization, it has to be deferred 1132 // until after the first call to onLayout so that it has the correct width 1133 if (mWaitingToShrink) { 1134 // shrink can trigger a synchronous onLayout call, so we 1135 // post this to avoid a stack overflow / tangled onLayout calls 1136 post(new Runnable() { 1137 public void run() { 1138 shrink(mWaitingToShrinkState, false); 1139 mWaitingToShrink = false; 1140 } 1141 }); 1142 } 1143 1144 if (LauncherApplication.isInPlaceRotationEnabled()) { 1145 // When the device is rotated, the scroll position of the current screen 1146 // needs to be refreshed 1147 setCurrentPage(getCurrentPage()); 1148 } 1149 } 1150 1151 @Override 1152 protected void onDraw(Canvas canvas) { 1153 updateWallpaperOffsets(); 1154 1155 // Draw the background gradient if necessary 1156 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1157 int alpha = (int) (mBackgroundAlpha * 255); 1158 if (mDrawCustomizeTrayBackground) { 1159 // Find out where to offset the gradient for the customization tray content 1160 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1161 final Matrix m = mCustomizationDrawer.getMatrix(); 1162 mCustomizationDrawerTransformedPos[0] = 0.0f; 1163 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1164 m.mapPoints(mCustomizationDrawerTransformedPos); 1165 1166 // Draw the bg glow behind the gradient 1167 mCustomizeTrayBackground.setAlpha(alpha); 1168 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1169 getMeasuredHeight()); 1170 mCustomizeTrayBackground.draw(canvas); 1171 1172 // Draw the bg gradient 1173 final int offset = (int) (mCustomizationDrawerPos[1] + 1174 mCustomizationDrawerTransformedPos[1]); 1175 mBackground.setAlpha(alpha); 1176 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1177 offset + getMeasuredHeight()); 1178 mBackground.draw(canvas); 1179 } else { 1180 mBackground.setAlpha(alpha); 1181 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1182 getMeasuredHeight()); 1183 mBackground.draw(canvas); 1184 } 1185 } 1186 super.onDraw(canvas); 1187 } 1188 1189 @Override 1190 protected void dispatchDraw(Canvas canvas) { 1191 if (mIsSmall || mIsInUnshrinkAnimation) { 1192 // Draw all the workspaces if we're small 1193 final int pageCount = getChildCount(); 1194 final long drawingTime = getDrawingTime(); 1195 for (int i = 0; i < pageCount; i++) { 1196 final CellLayout page = (CellLayout) getChildAt(i); 1197 if (page.getVisibility() == VISIBLE 1198 && (page.getAlpha() != 0f || page.getBackgroundAlpha() != 0f)) { 1199 drawChild(canvas, page, drawingTime); 1200 } 1201 } 1202 } else { 1203 super.dispatchDraw(canvas); 1204 1205 final int width = getWidth(); 1206 final int height = getHeight(); 1207 1208 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1209 if (mInScrollArea && (height > width)) { 1210 final int pageHeight = getChildAt(0).getHeight(); 1211 1212 // This determines the height of the glowing edge: 90% of the page height 1213 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1214 1215 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1216 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1217 1218 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1219 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1220 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1221 d.draw(canvas); 1222 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1223 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1224 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1225 d.draw(canvas); 1226 } 1227 } 1228 1229 if (mDropView != null) { 1230 // We are animating an item that was just dropped on the home screen. 1231 // Render its View in the current animation position. 1232 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1233 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1234 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1235 canvas.translate(xPos, yPos); 1236 mDropView.draw(canvas); 1237 canvas.restore(); 1238 } 1239 } 1240 } 1241 1242 @Override 1243 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1244 if (!mLauncher.isAllAppsVisible()) { 1245 final Folder openFolder = getOpenFolder(); 1246 if (openFolder != null) { 1247 return openFolder.requestFocus(direction, previouslyFocusedRect); 1248 } else { 1249 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1250 } 1251 } 1252 return false; 1253 } 1254 1255 @Override 1256 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1257 if (!mLauncher.isAllAppsVisible()) { 1258 final Folder openFolder = getOpenFolder(); 1259 if (openFolder != null) { 1260 openFolder.addFocusables(views, direction); 1261 } else { 1262 super.addFocusables(views, direction, focusableMode); 1263 } 1264 } 1265 } 1266 1267 @Override 1268 public boolean dispatchTouchEvent(MotionEvent ev) { 1269 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1270 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1271 // ie when you click on a mini-screen, it zooms back to that screen) 1272 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1273 return false; 1274 } 1275 } 1276 1277 return super.dispatchTouchEvent(ev); 1278 } 1279 1280 void enableChildrenCache(int fromPage, int toPage) { 1281 if (fromPage > toPage) { 1282 final int temp = fromPage; 1283 fromPage = toPage; 1284 toPage = temp; 1285 } 1286 1287 final int screenCount = getChildCount(); 1288 1289 fromPage = Math.max(fromPage, 0); 1290 toPage = Math.min(toPage, screenCount - 1); 1291 1292 for (int i = fromPage; i <= toPage; i++) { 1293 final CellLayout layout = (CellLayout) getChildAt(i); 1294 layout.setChildrenDrawnWithCacheEnabled(true); 1295 layout.setChildrenDrawingCacheEnabled(true); 1296 } 1297 } 1298 1299 void clearChildrenCache() { 1300 final int screenCount = getChildCount(); 1301 for (int i = 0; i < screenCount; i++) { 1302 final CellLayout layout = (CellLayout) getChildAt(i); 1303 layout.setChildrenDrawnWithCacheEnabled(false); 1304 } 1305 } 1306 1307 @Override 1308 public boolean onTouchEvent(MotionEvent ev) { 1309 AllAppsPagedView allApps = (AllAppsPagedView) 1310 mLauncher.findViewById(R.id.all_apps_paged_view); 1311 1312 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1313 && allApps != null) { 1314 if (ev.getAction() == MotionEvent.ACTION_UP && 1315 allApps.getTouchState() == TOUCH_STATE_REST) { 1316 1317 // Cancel any scrolling that is in progress. 1318 if (!mScroller.isFinished()) { 1319 mScroller.abortAnimation(); 1320 } 1321 setCurrentPage(mCurrentPage); 1322 1323 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1324 mLauncher.showWorkspace(true); 1325 } 1326 allApps.onTouchEvent(ev); 1327 return true; 1328 } else { 1329 return allApps.onTouchEvent(ev); 1330 } 1331 } 1332 return super.onTouchEvent(ev); 1333 } 1334 1335 protected void enableChildrenLayers(boolean enable) { 1336 for (int i = 0; i < getPageCount(); i++) { 1337 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1338 } 1339 } 1340 @Override 1341 protected void pageBeginMoving() { 1342 enableChildrenLayers(true); 1343 super.pageBeginMoving(); 1344 } 1345 1346 @Override 1347 protected void pageEndMoving() { 1348 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1349 enableChildrenLayers(false); 1350 } 1351 super.pageEndMoving(); 1352 } 1353 1354 @Override 1355 protected void onWallpaperTap(MotionEvent ev) { 1356 final int[] position = mTempCell; 1357 getLocationOnScreen(position); 1358 1359 int pointerIndex = ev.getActionIndex(); 1360 position[0] += (int) ev.getX(pointerIndex); 1361 position[1] += (int) ev.getY(pointerIndex); 1362 1363 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1364 ev.getAction() == MotionEvent.ACTION_UP 1365 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1366 position[0], position[1], 0, null); 1367 } 1368 1369 public boolean isSmall() { 1370 return mIsSmall; 1371 } 1372 1373 private float getYScaleForScreen(int screen) { 1374 int x = Math.abs(screen - 2); 1375 1376 // TODO: This should be generalized for use with arbitrary rotation angles. 1377 switch(x) { 1378 case 0: return EXTRA_SCALE_FACTOR_0; 1379 case 1: return EXTRA_SCALE_FACTOR_1; 1380 case 2: return EXTRA_SCALE_FACTOR_2; 1381 } 1382 return 1.0f; 1383 } 1384 1385 public void shrink(ShrinkState shrinkState) { 1386 shrink(shrinkState, true); 1387 } 1388 1389 private int getCustomizeDrawerHeight() { 1390 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1391 int height = customizationDrawer.getHeight(); 1392 TabWidget tabWidget = (TabWidget) 1393 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1394 if (tabWidget.getTabCount() > 0) { 1395 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1396 // subtract the empty space above the tab text 1397 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1398 } 1399 return height; 1400 } 1401 1402 // we use this to shrink the workspace for the all apps view and the customize view 1403 public void shrink(ShrinkState shrinkState, boolean animated) { 1404 // In the launcher interaction model, we're never in the state where we're shrunken and 1405 // visible in the bottom of the screen, and then want to fade to being invisible. 1406 // After spring loaded mode ends, this method was getting called twice, the first time 1407 // with BOTTOM_VISIBLE (what we want) and a second time with BOTTOM_INVISIBLE (not 1408 // what we want). As a temporary solution, we just change the second call to BOTTOM_VISIBLE 1409 if (mIsSmall && mShrinkState == ShrinkState.BOTTOM_VISIBLE) { 1410 shrinkState = ShrinkState.BOTTOM_VISIBLE; 1411 } 1412 if (mFirstLayout) { 1413 // (mFirstLayout == "first layout has not happened yet") 1414 // if we get a call to shrink() as part of our initialization (for example, if 1415 // Launcher is started in All Apps mode) then we need to wait for a layout call 1416 // to get our width so we can layout the mini-screen views correctly 1417 mWaitingToShrink = true; 1418 mWaitingToShrinkState = shrinkState; 1419 return; 1420 } 1421 // Stop any scrolling, move to the current page right away 1422 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1423 if (!mIsDragInProcess) { 1424 updateWhichPagesAcceptDrops(shrinkState); 1425 } 1426 1427 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1428 if (currentPage == null) { 1429 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1430 + " mNextPage " + mNextPage); 1431 return; 1432 } 1433 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1434 currentPage.setBackgroundAlpha(0.0f); 1435 } 1436 currentPage.setBackgroundAlphaMultiplier(1.0f); 1437 1438 mIsSmall = true; 1439 mShrinkState = shrinkState; 1440 1441 // we intercept and reject all touch events when we're small, so be sure to reset the state 1442 mTouchState = TOUCH_STATE_REST; 1443 mActivePointerId = INVALID_POINTER; 1444 1445 final Resources res = getResources(); 1446 final int screenWidth = getWidth(); 1447 final int screenHeight = getHeight(); 1448 1449 // Making the assumption that all pages have the same width as the 0th 1450 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1451 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1452 1453 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1454 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1455 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1456 1457 final int screenCount = getChildCount(); 1458 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1459 1460 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1461 float y = (isPortrait ? 1462 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1463 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1464 float finalAlpha = 1.0f; 1465 float extraShrinkFactor = 1.0f; 1466 1467 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1468 y = screenHeight - y - scaledPageHeight; 1469 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1470 // We shrink and disappear to nothing in the case of all apps 1471 // (which is when we shrink to the bottom) 1472 y = screenHeight - y - scaledPageHeight; 1473 finalAlpha = 0.0f; 1474 } else if (shrinkState == ShrinkState.MIDDLE) { 1475 y = screenHeight / 2 - scaledPageHeight / 2; 1476 finalAlpha = 1.0f; 1477 } else if (shrinkState == ShrinkState.TOP) { 1478 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1479 } 1480 1481 int duration; 1482 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1483 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1484 } else { 1485 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1486 } 1487 1488 // We animate all the screens to the centered position in workspace 1489 // At the same time, the screens become greyed/dimmed 1490 1491 // newX is initialized to the left-most position of the centered screens 1492 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1493 1494 // We are going to scale about the center of the view, so we need to adjust the positions 1495 // of the views accordingly 1496 x -= (pageWidth - scaledPageWidth) / 2.0f; 1497 y -= (pageHeight - scaledPageHeight) / 2.0f; 1498 1499 if (mAnimator != null) { 1500 mAnimator.cancel(); 1501 } 1502 1503 mAnimator = new AnimatorSet(); 1504 1505 final float[] oldXs = new float[getChildCount()]; 1506 final float[] oldYs = new float[getChildCount()]; 1507 final float[] oldScaleXs = new float[getChildCount()]; 1508 final float[] oldScaleYs = new float[getChildCount()]; 1509 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1510 final float[] oldAlphas = new float[getChildCount()]; 1511 final float[] oldRotationYs = new float[getChildCount()]; 1512 final float[] newXs = new float[getChildCount()]; 1513 final float[] newYs = new float[getChildCount()]; 1514 final float[] newScaleXs = new float[getChildCount()]; 1515 final float[] newScaleYs = new float[getChildCount()]; 1516 final float[] newBackgroundAlphas = new float[getChildCount()]; 1517 final float[] newAlphas = new float[getChildCount()]; 1518 final float[] newRotationYs = new float[getChildCount()]; 1519 1520 for (int i = 0; i < screenCount; i++) { 1521 final CellLayout cl = (CellLayout) getChildAt(i); 1522 1523 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1524 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1525 float rotationScaleY = getYScaleForScreen(i); 1526 1527 oldAlphas[i] = cl.getAlpha(); 1528 newAlphas[i] = finalAlpha; 1529 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1530 // if the CellLayout will be visible during the animation, force building its 1531 // hardware layer immediately so we don't see a blip later in the animation 1532 cl.buildChildrenLayer(); 1533 } 1534 if (animated) { 1535 oldXs[i] = cl.getX(); 1536 oldYs[i] = cl.getY(); 1537 oldScaleXs[i] = cl.getScaleX(); 1538 oldScaleYs[i] = cl.getScaleY(); 1539 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1540 oldRotationYs[i] = cl.getRotationY(); 1541 newXs[i] = x; 1542 newYs[i] = y; 1543 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1544 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1545 newBackgroundAlphas[i] = finalAlpha; 1546 newRotationYs[i] = rotation; 1547 } else { 1548 cl.setX((int)x); 1549 cl.setY((int)y); 1550 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1551 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1552 cl.setBackgroundAlpha(finalAlpha); 1553 cl.setAlpha(finalAlpha); 1554 cl.setRotationY(rotation); 1555 mShrinkAnimationListener.onAnimationEnd(null); 1556 } 1557 // increment newX for the next screen 1558 x += scaledPageWidth + extraScaledSpacing; 1559 } 1560 1561 float wallpaperOffset = 0.5f; 1562 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1563 int wallpaperTravelHeight = (int) (display.getHeight() * 1564 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1565 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1566 boolean isLandscape = display.getWidth() > display.getHeight(); 1567 1568 switch (shrinkState) { 1569 // animating in 1570 case TOP: 1571 // customize 1572 wallpaperOffset = 0.5f + offsetFromCenter; 1573 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1574 break; 1575 case MIDDLE: 1576 case SPRING_LOADED: 1577 wallpaperOffset = 0.5f; 1578 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1579 break; 1580 case BOTTOM_HIDDEN: 1581 case BOTTOM_VISIBLE: 1582 // allapps 1583 wallpaperOffset = 0.5f - offsetFromCenter; 1584 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1585 break; 1586 } 1587 1588 setLayoutScale(1.0f); 1589 if (animated) { 1590 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1591 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1592 1593 mSyncWallpaperOffsetWithScroll = false; 1594 1595 ValueAnimator animWithInterpolator = 1596 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1597 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1598 1599 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1600 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1601 final float newHorizontalWallpaperOffset = 0.5f; 1602 final float newVerticalWallpaperOffset = wallpaperOffset; 1603 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1604 public void onAnimationUpdate(float a, float b) { 1605 if (b == 0f) { 1606 // an optimization, and required for correct behavior. 1607 return; 1608 } 1609 fastInvalidate(); 1610 setHorizontalWallpaperOffset( 1611 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1612 setVerticalWallpaperOffset( 1613 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1614 for (int i = 0; i < screenCount; i++) { 1615 final CellLayout cl = (CellLayout) getChildAt(i); 1616 cl.fastInvalidate(); 1617 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1618 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1619 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1620 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1621 cl.setFastBackgroundAlpha( 1622 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1623 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1624 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1625 } 1626 } 1627 }); 1628 mAnimator.playTogether(animWithInterpolator); 1629 mAnimator.addListener(mShrinkAnimationListener); 1630 mAnimator.start(); 1631 } else { 1632 setVerticalWallpaperOffset(wallpaperOffset); 1633 setHorizontalWallpaperOffset(0.5f); 1634 updateWallpaperOffsetImmediately(); 1635 } 1636 setChildrenDrawnWithCacheEnabled(true); 1637 1638 if (shrinkState == ShrinkState.TOP) { 1639 showBackgroundGradientForCustomizeTray(); 1640 } else { 1641 showBackgroundGradientForAllApps(); 1642 } 1643 } 1644 1645 /* 1646 * This interpolator emulates the rate at which the perceived scale of an object changes 1647 * as its distance from a camera increases. When this interpolator is applied to a scale 1648 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1649 * from the camera. 1650 */ 1651 static class ZInterpolator implements TimeInterpolator { 1652 private float focalLength; 1653 1654 public ZInterpolator(float foc) { 1655 focalLength = foc; 1656 } 1657 1658 public float getInterpolation(float input) { 1659 return (1.0f - focalLength / (focalLength + input)) / 1660 (1.0f - focalLength / (focalLength + 1.0f)); 1661 } 1662 } 1663 1664 /* 1665 * The exact reverse of ZInterpolator. 1666 */ 1667 static class InverseZInterpolator implements TimeInterpolator { 1668 private ZInterpolator zInterpolator; 1669 public InverseZInterpolator(float foc) { 1670 zInterpolator = new ZInterpolator(foc); 1671 } 1672 public float getInterpolation(float input) { 1673 return 1 - zInterpolator.getInterpolation(1 - input); 1674 } 1675 } 1676 1677 /* 1678 * ZInterpolator compounded with an ease-out. 1679 */ 1680 static class ZoomOutInterpolator implements TimeInterpolator { 1681 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1682 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1683 1684 public float getInterpolation(float input) { 1685 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1686 } 1687 } 1688 1689 /* 1690 * InvereZInterpolator compounded with an ease-out. 1691 */ 1692 static class ZoomInInterpolator implements TimeInterpolator { 1693 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1694 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1695 1696 public float getInterpolation(float input) { 1697 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1698 } 1699 } 1700 1701 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1702 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1703 1704 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1705 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1706 } 1707 1708 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1709 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1710 } 1711 1712 private void updateWhichPagesAcceptDropsHelper( 1713 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1714 final int screenCount = getChildCount(); 1715 for (int i = 0; i < screenCount; i++) { 1716 CellLayout cl = (CellLayout) getChildAt(i); 1717 cl.setIsDragOccuring(isDragHappening); 1718 if (state == null) { 1719 // If we are not in a shrunken state, mark all cell layouts as droppable (if they 1720 // have the space) 1721 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1722 } else { 1723 switch (state) { 1724 case TOP: 1725 cl.setIsDefaultDropTarget(i == mCurrentPage); 1726 case BOTTOM_HIDDEN: 1727 case BOTTOM_VISIBLE: 1728 case SPRING_LOADED: 1729 if (state != ShrinkState.TOP) { 1730 cl.setIsDefaultDropTarget(false); 1731 } 1732 if (!isDragHappening) { 1733 // even if a drag isn't happening, we don't want to show a screen as 1734 // accepting drops if it doesn't have at least one free cell 1735 spanX = 1; 1736 spanY = 1; 1737 } 1738 // the page accepts drops if we can find at least one empty spot 1739 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1740 break; 1741 default: 1742 throw new RuntimeException("Unhandled ShrinkState " + state); 1743 } 1744 } 1745 } 1746 } 1747 1748 /* 1749 * 1750 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1751 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1752 * 1753 * These methods mark the appropriate pages as accepting drops (which alters their visual 1754 * appearance). 1755 * 1756 */ 1757 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1758 mIsDragInProcess = true; 1759 1760 final Canvas canvas = new Canvas(); 1761 1762 // We need to add extra padding to the bitmap to make room for the glow effect 1763 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1764 1765 CellLayout cl = (CellLayout) getChildAt(0); 1766 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1767 // The outline is used to visualize where the item will land if dropped 1768 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1769 1770 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1771 } 1772 1773 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1774 // never dragged over 1775 public void onDragStopped(boolean success) { 1776 mLastDragView = null; 1777 // In the success case, DragController has already called onDragExit() 1778 if (!success) { 1779 doDragExit(); 1780 } 1781 mIsDragInProcess = false; 1782 updateWhichPagesAcceptDrops(mShrinkState); 1783 } 1784 1785 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1786 public void unshrink(CellLayout clThatWasClicked) { 1787 unshrink(clThatWasClicked, false); 1788 } 1789 1790 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1791 int newCurrentPage = indexOfChild(clThatWasClicked); 1792 if (mIsSmall) { 1793 if (springLoaded) { 1794 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1795 } 1796 scrollToNewPageWithoutMovingPages(newCurrentPage); 1797 unshrink(true, springLoaded); 1798 } 1799 } 1800 1801 1802 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1803 mShrinkState = ShrinkState.SPRING_LOADED; 1804 unshrink(clThatWasClicked, true); 1805 mDragTargetLayout.onDragEnter(); 1806 } 1807 1808 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1809 shrink(shrinkState); 1810 if (mDragTargetLayout != null) { 1811 mDragTargetLayout.onDragExit(); 1812 } 1813 } 1814 1815 public void exitWidgetResizeMode() { 1816 DragLayer dragLayer = (DragLayer) mLauncher.findViewById(R.id.drag_layer); 1817 dragLayer.clearAllResizeFrames(); 1818 } 1819 1820 void unshrink(boolean animated) { 1821 unshrink(animated, false); 1822 } 1823 1824 void unshrink(boolean animated, boolean springLoaded) { 1825 mWaitingToShrink = false; 1826 if (mIsSmall) { 1827 float finalScaleFactor = 1.0f; 1828 float finalBackgroundAlpha = 0.0f; 1829 if (springLoaded) { 1830 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1831 finalBackgroundAlpha = 1.0f; 1832 } else { 1833 mIsSmall = false; 1834 } 1835 if (mAnimator != null) { 1836 mAnimator.cancel(); 1837 } 1838 1839 mAnimator = new AnimatorSet(); 1840 final int screenCount = getChildCount(); 1841 1842 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1843 1844 final float[] oldTranslationXs = new float[getChildCount()]; 1845 final float[] oldTranslationYs = new float[getChildCount()]; 1846 final float[] oldScaleXs = new float[getChildCount()]; 1847 final float[] oldScaleYs = new float[getChildCount()]; 1848 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1849 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1850 final float[] oldAlphas = new float[getChildCount()]; 1851 final float[] oldRotationYs = new float[getChildCount()]; 1852 final float[] newTranslationXs = new float[getChildCount()]; 1853 final float[] newTranslationYs = new float[getChildCount()]; 1854 final float[] newScaleXs = new float[getChildCount()]; 1855 final float[] newScaleYs = new float[getChildCount()]; 1856 final float[] newBackgroundAlphas = new float[getChildCount()]; 1857 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1858 final float[] newAlphas = new float[getChildCount()]; 1859 final float[] newRotationYs = new float[getChildCount()]; 1860 1861 for (int i = 0; i < screenCount; i++) { 1862 final CellLayout cl = (CellLayout)getChildAt(i); 1863 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1864 float finalAlphaMultiplierValue = 1865 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1866 0.0f : 1.0f; 1867 float rotation = 0.0f; 1868 1869 if (i < mCurrentPage) { 1870 rotation = WORKSPACE_ROTATION; 1871 } else if (i > mCurrentPage) { 1872 rotation = -WORKSPACE_ROTATION; 1873 } 1874 1875 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1876 1877 oldAlphas[i] = cl.getAlpha(); 1878 newAlphas[i] = finalAlphaValue; 1879 if (animated) { 1880 oldTranslationXs[i] = cl.getTranslationX(); 1881 oldTranslationYs[i] = cl.getTranslationY(); 1882 oldScaleXs[i] = cl.getScaleX(); 1883 oldScaleYs[i] = cl.getScaleY(); 1884 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1885 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1886 oldRotationYs[i] = cl.getRotationY(); 1887 1888 newTranslationXs[i] = translation; 1889 newTranslationYs[i] = 0f; 1890 newScaleXs[i] = finalScaleFactor; 1891 newScaleYs[i] = finalScaleFactor; 1892 newBackgroundAlphas[i] = finalBackgroundAlpha; 1893 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1894 newRotationYs[i] = rotation; 1895 } else { 1896 cl.setTranslationX(translation); 1897 cl.setTranslationY(0.0f); 1898 cl.setScaleX(finalScaleFactor); 1899 cl.setScaleY(finalScaleFactor); 1900 cl.setBackgroundAlpha(0.0f); 1901 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1902 cl.setAlpha(finalAlphaValue); 1903 cl.setRotationY(rotation); 1904 mUnshrinkAnimationListener.onAnimationEnd(null); 1905 } 1906 } 1907 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1908 boolean isLandscape = display.getWidth() > display.getHeight(); 1909 switch (mShrinkState) { 1910 // animating out 1911 case TOP: 1912 // customize 1913 if (animated) { 1914 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1915 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1916 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1917 } 1918 break; 1919 case MIDDLE: 1920 case SPRING_LOADED: 1921 if (animated) { 1922 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1923 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1924 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1925 } 1926 break; 1927 case BOTTOM_HIDDEN: 1928 case BOTTOM_VISIBLE: 1929 // all apps 1930 if (animated) { 1931 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1932 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1933 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1934 } 1935 break; 1936 } 1937 if (animated) { 1938 ValueAnimator animWithInterpolator = 1939 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1940 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1941 1942 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1943 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1944 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1945 final float newVerticalWallpaperOffset = 0.5f; 1946 animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() { 1947 public void onAnimationUpdate(float a, float b) { 1948 if (b == 0f) { 1949 // an optimization, but not required 1950 return; 1951 } 1952 fastInvalidate(); 1953 setHorizontalWallpaperOffset( 1954 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1955 setVerticalWallpaperOffset( 1956 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1957 for (int i = 0; i < screenCount; i++) { 1958 final CellLayout cl = (CellLayout) getChildAt(i); 1959 cl.fastInvalidate(); 1960 cl.setFastTranslationX( 1961 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1962 cl.setFastTranslationY( 1963 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1964 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1965 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1966 cl.setFastBackgroundAlpha( 1967 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1968 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1969 b * newBackgroundAlphaMultipliers[i]); 1970 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1971 } 1972 } 1973 }); 1974 1975 ValueAnimator rotationAnim = 1976 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1977 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1978 rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { 1979 public void onAnimationUpdate(float a, float b) { 1980 // don't invalidate workspace because we did it above 1981 if (b == 0f) { 1982 // an optimization, but not required 1983 return; 1984 } 1985 for (int i = 0; i < screenCount; i++) { 1986 final CellLayout cl = (CellLayout) getChildAt(i); 1987 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1988 } 1989 } 1990 }); 1991 1992 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1993 // If we call this when we're not animated, onAnimationEnd is never called on 1994 // the listener; make sure we only use the listener when we're actually animating 1995 mAnimator.addListener(mUnshrinkAnimationListener); 1996 mAnimator.start(); 1997 } else { 1998 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1999 setVerticalWallpaperOffset(0.5f); 2000 updateWallpaperOffsetImmediately(); 2001 } 2002 } 2003 2004 if (!springLoaded) { 2005 hideBackgroundGradient(); 2006 } 2007 } 2008 2009 /** 2010 * Draw the View v into the given Canvas. 2011 * 2012 * @param v the view to draw 2013 * @param destCanvas the canvas to draw on 2014 * @param padding the horizontal and vertical padding to use when drawing 2015 */ 2016 private void drawDragView(View v, Canvas destCanvas, int padding) { 2017 final Rect clipRect = mTempRect; 2018 v.getDrawingRect(clipRect); 2019 2020 // For a TextView, adjust the clip rect so that we don't include the text label 2021 if (v instanceof BubbleTextView) { 2022 final BubbleTextView tv = (BubbleTextView) v; 2023 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2024 tv.getLayout().getLineTop(0); 2025 } else if (v instanceof TextView) { 2026 final TextView tv = (TextView) v; 2027 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2028 tv.getLayout().getLineTop(0); 2029 } 2030 2031 // Draw the View into the bitmap. 2032 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2033 // they set scrollX and scrollY to large values to achieve centered text 2034 2035 destCanvas.save(); 2036 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2037 destCanvas.clipRect(clipRect, Op.REPLACE); 2038 v.draw(destCanvas); 2039 destCanvas.restore(); 2040 } 2041 2042 /** 2043 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2044 * Responsibility for the bitmap is transferred to the caller. 2045 */ 2046 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2047 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2048 final Bitmap b = Bitmap.createBitmap( 2049 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2050 2051 canvas.setBitmap(b); 2052 drawDragView(v, canvas, padding); 2053 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2054 return b; 2055 } 2056 2057 /** 2058 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2059 * Responsibility for the bitmap is transferred to the caller. 2060 */ 2061 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2062 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2063 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2064 canvas.setBitmap(b); 2065 2066 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2067 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2068 (h - padding) / (float) orig.getHeight()); 2069 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2070 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2071 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2072 2073 // center the image 2074 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2075 2076 Paint p = new Paint(); 2077 p.setFilterBitmap(true); 2078 canvas.drawBitmap(orig, src, dst, p); 2079 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2080 2081 return b; 2082 } 2083 2084 /** 2085 * Creates a drag outline to represent a drop (that we don't have the actual information for 2086 * yet). May be changed in the future to alter the drop outline slightly depending on the 2087 * clip description mime data. 2088 */ 2089 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2090 Resources r = getResources(); 2091 final int outlineColor = r.getColor(R.color.drag_outline_color); 2092 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2093 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2094 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2095 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2096 final Bitmap b = Bitmap.createBitmap( 2097 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2098 2099 canvas.setBitmap(b); 2100 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2101 rectRadius, rectRadius, mExternalDragOutlinePaint); 2102 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2103 return b; 2104 } 2105 2106 /** 2107 * Returns a new bitmap to show when the given View is being dragged around. 2108 * Responsibility for the bitmap is transferred to the caller. 2109 */ 2110 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2111 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2112 final Bitmap b = Bitmap.createBitmap( 2113 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2114 2115 canvas.setBitmap(b); 2116 canvas.drawBitmap(mDragOutline, 0, 0, null); 2117 drawDragView(v, canvas, padding); 2118 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2119 2120 return b; 2121 } 2122 2123 void startDrag(CellLayout.CellInfo cellInfo) { 2124 View child = cellInfo.cell; 2125 2126 // Make sure the drag was started by a long press as opposed to a long click. 2127 if (!child.isInTouchMode()) { 2128 return; 2129 } 2130 2131 mDragInfo = cellInfo; 2132 2133 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2134 current.onDragChild(child); 2135 2136 child.clearFocus(); 2137 child.setPressed(false); 2138 2139 final Canvas canvas = new Canvas(); 2140 2141 // We need to add extra padding to the bitmap to make room for the glow effect 2142 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2143 2144 // The outline is used to visualize where the item will land if dropped 2145 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2146 2147 // The drag bitmap follows the touch point around on the screen 2148 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2149 2150 final int bmpWidth = b.getWidth(); 2151 final int bmpHeight = b.getHeight(); 2152 child.getLocationOnScreen(mTempXY); 2153 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2154 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2155 mLauncher.lockScreenOrientation(); 2156 mDragController.startDrag( 2157 b, screenX, screenY, this, child.getTag(), DragController.DRAG_ACTION_MOVE); 2158 b.recycle(); 2159 } 2160 2161 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2162 boolean insertAtFirst, int intersectX, int intersectY) { 2163 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2164 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2165 2166 final int[] cellXY = new int[2]; 2167 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2168 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2169 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2170 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2171 cellXY[0], cellXY[1]); 2172 } 2173 2174 private void setPositionForDropAnimation( 2175 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2176 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2177 2178 // Based on the position of the drag view, find the top left of the original view 2179 int viewX = dragViewX + (dragView.getWidth() - child.getMeasuredWidth()) / 2; 2180 int viewY = dragViewY + (dragView.getHeight() - child.getMeasuredHeight()) / 2; 2181 viewX += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); 2182 viewY += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); 2183 2184 // Set its old pos (in the new parent's coordinates); it will be animated 2185 // in animateViewIntoPosition after the next layout pass 2186 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2187 lp.oldY = viewY - (parent.getTop() - mScrollY); 2188 } 2189 2190 /* 2191 * We should be careful that this method cannot result in any synchronous requestLayout() 2192 * calls, as it is called from onLayout(). 2193 */ 2194 public void animateViewIntoPosition(final View view) { 2195 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2196 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2197 2198 // Convert the animation params to be relative to the Workspace, not the CellLayout 2199 final int fromX = lp.oldX + parent.getLeft(); 2200 final int fromY = lp.oldY + parent.getTop(); 2201 2202 final int dx = lp.x - lp.oldX; 2203 final int dy = lp.y - lp.oldY; 2204 2205 // Calculate the duration of the animation based on the object's distance 2206 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2207 final Resources res = getResources(); 2208 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2209 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2210 if (dist < maxDist) { 2211 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2212 } 2213 2214 if (mDropAnim != null) { 2215 mDropAnim.end(); 2216 } 2217 mDropAnim = new ValueAnimator(); 2218 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2219 2220 // The view is invisible during the animation; we render it manually. 2221 mDropAnim.addListener(new AnimatorListenerAdapter() { 2222 public void onAnimationStart(Animator animation) { 2223 // Set this here so that we don't render it until the animation begins 2224 mDropView = view; 2225 } 2226 2227 public void onAnimationEnd(Animator animation) { 2228 if (mDropView != null) { 2229 mDropView.setVisibility(View.VISIBLE); 2230 mDropView = null; 2231 } 2232 } 2233 }); 2234 2235 mDropAnim.setDuration(duration); 2236 mDropAnim.setFloatValues(0.0f, 1.0f); 2237 mDropAnim.removeAllUpdateListeners(); 2238 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2239 public void onAnimationUpdate(ValueAnimator animation) { 2240 final float percent = (Float) animation.getAnimatedValue(); 2241 // Invalidate the old position 2242 invalidate(mDropViewPos[0], mDropViewPos[1], 2243 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2244 2245 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2246 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2247 invalidate(mDropViewPos[0], mDropViewPos[1], 2248 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2249 } 2250 }); 2251 2252 mDropAnim.start(); 2253 } 2254 2255 /** 2256 * {@inheritDoc} 2257 */ 2258 public boolean acceptDrop(DragSource source, int x, int y, 2259 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2260 2261 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2262 if (source != this) { 2263 // Don't accept the drop if we're not over a screen at time of drop 2264 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2265 return false; 2266 } 2267 2268 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2269 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2270 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2271 2272 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2273 2274 // Don't accept the drop if there's no room for the item 2275 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2276 mLauncher.showOutOfSpaceMessage(); 2277 return false; 2278 } 2279 } 2280 return true; 2281 } 2282 2283 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2284 DragView dragView, Object dragInfo) { 2285 boolean largeOrSpringLoaded = !mIsSmall || mWasSpringLoadedOnDragExit; 2286 int originX = largeOrSpringLoaded ? x - xOffset : x - xOffset + dragView.getWidth() / 2; 2287 int originY = largeOrSpringLoaded ? y - yOffset : y - yOffset + dragView.getHeight() / 2; 2288 2289 if (mIsSmall || mIsInUnshrinkAnimation) { 2290 // get originX and originY in the local coordinate system of the screen 2291 mTempOriginXY[0] = originX; 2292 mTempOriginXY[1] = originY; 2293 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 2294 originX = (int)mTempOriginXY[0]; 2295 originY = (int)mTempOriginXY[1]; 2296 if (!largeOrSpringLoaded) { 2297 originX -= mDragTargetLayout.getCellWidth() / 2; 2298 originY -= mDragTargetLayout.getCellHeight() / 2; 2299 } 2300 } 2301 2302 // When you are in customization mode and drag to a particular screen, make that the 2303 // new current/default screen, so any subsequent taps add items to that screen 2304 if (!mLauncher.isAllAppsVisible()) { 2305 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2306 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2307 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2308 } 2309 } 2310 2311 if (source != this) { 2312 final int[] touchXY = new int[] { originX, originY }; 2313 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2314 // When the workspace is shrunk and the drop comes from customize, don't actually 2315 // add the item to the screen -- customize will do this itself 2316 ((ItemInfo) dragInfo).dropPos = touchXY; 2317 return; 2318 } 2319 onDropExternal(touchXY, dragInfo, mDragTargetLayout, false, dragView, originX, originY); 2320 } else if (mDragInfo != null) { 2321 final View cell = mDragInfo.cell; 2322 CellLayout dropTargetLayout = mDragTargetLayout; 2323 2324 // Handle the case where the user drops when in the scroll area. 2325 // This is treated as a drop on the adjacent page. 2326 if (dropTargetLayout == null && mInScrollArea) { 2327 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2328 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2329 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2330 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2331 } 2332 } 2333 2334 if (dropTargetLayout != null) { 2335 // Move internally 2336 mTargetCell = findNearestVacantArea(originX, originY, 2337 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 2338 mTargetCell); 2339 2340 final int screen = (mTargetCell == null) ? 2341 mDragInfo.screen : indexOfChild(dropTargetLayout); 2342 2343 if (screen != mCurrentPage) { 2344 snapToPage(screen); 2345 } 2346 2347 if (mTargetCell != null) { 2348 if (screen != mDragInfo.screen) { 2349 // Reparent the view 2350 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2351 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2352 mDragInfo.spanX, mDragInfo.spanY); 2353 } 2354 2355 // update the item's position after drop 2356 final ItemInfo info = (ItemInfo) cell.getTag(); 2357 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2358 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2359 lp.cellX = mTargetCell[0]; 2360 lp.cellY = mTargetCell[1]; 2361 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2362 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2363 2364 if (cell instanceof LauncherAppWidgetHostView) { 2365 final CellLayout cellLayout = dropTargetLayout; 2366 // We post this call so that the widget has a chance to be placed 2367 // in its final location 2368 2369 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2370 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2371 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2372 final Runnable resizeRunnable = new Runnable() { 2373 public void run() { 2374 DragLayer dragLayer = (DragLayer) 2375 mLauncher.findViewById(R.id.drag_layer); 2376 dragLayer.addResizeFrame(info, hostView, 2377 cellLayout); 2378 } 2379 }; 2380 post(new Runnable() { 2381 public void run() { 2382 if (!isPageMoving()) { 2383 resizeRunnable.run(); 2384 } else { 2385 mDelayedResizeRunnable = resizeRunnable; 2386 } 2387 } 2388 }); 2389 } 2390 } 2391 2392 LauncherModel.moveItemInDatabase(mLauncher, info, 2393 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2394 lp.cellX, lp.cellY); 2395 } 2396 } 2397 2398 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2399 2400 // Prepare it to be animated into its new position 2401 // This must be called after the view has been re-parented 2402 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 2403 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2404 parent.onDropChild(cell, animateDrop); 2405 } 2406 } 2407 2408 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2409 int yOffset, DragView dragView, Object dragInfo) { 2410 mDragTargetLayout = null; // Reset the drag state 2411 2412 if (!mIsSmall) { 2413 mDragTargetLayout = getCurrentDropLayout(); 2414 mDragTargetLayout.onDragEnter(); 2415 showOutlines(); 2416 } 2417 } 2418 2419 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2420 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2421 2422 if (mIsSmall || mIsInUnshrinkAnimation) { 2423 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2424 return null; 2425 } 2426 // We may need to delegate the drag to a child view. If a 1x1 item 2427 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2428 // then drag events should be handled by that child. 2429 2430 ItemInfo item = (ItemInfo) dragInfo; 2431 CellLayout currentLayout = getCurrentDropLayout(); 2432 2433 int dragPointX, dragPointY; 2434 if (item.spanX == 1 && item.spanY == 1) { 2435 // For a 1x1, calculate the drop cell exactly as in onDragOver 2436 dragPointX = x - xOffset; 2437 dragPointY = y - yOffset; 2438 } else { 2439 // Otherwise, use the exact drag coordinates 2440 dragPointX = x; 2441 dragPointY = y; 2442 } 2443 dragPointX += mScrollX - currentLayout.getLeft(); 2444 dragPointY += mScrollY - currentLayout.getTop(); 2445 2446 // If we are dragging over a cell that contains a DropTarget that will 2447 // accept the drop, delegate to that DropTarget. 2448 final int[] cellXY = mTempCell; 2449 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2450 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2451 if (child instanceof DropTarget) { 2452 DropTarget target = (DropTarget)child; 2453 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2454 return target; 2455 } 2456 } 2457 return null; 2458 } 2459 2460 /** 2461 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2462 * in the returned structure related to the widgets that match the drop (or a null list if it is 2463 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2464 */ 2465 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2466 final LauncherModel model = mLauncher.getModel(); 2467 final ClipDescription desc = event.getClipDescription(); 2468 final int mimeTypeCount = desc.getMimeTypeCount(); 2469 for (int i = 0; i < mimeTypeCount; ++i) { 2470 final String mimeType = desc.getMimeType(i); 2471 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2472 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2473 } else { 2474 final List<WidgetMimeTypeHandlerData> widgets = 2475 model.resolveWidgetsForMimeType(mContext, mimeType); 2476 if (widgets.size() > 0) { 2477 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2478 } 2479 } 2480 } 2481 return null; 2482 } 2483 2484 /** 2485 * Global drag and drop handler 2486 */ 2487 @Override 2488 public boolean onDragEvent(DragEvent event) { 2489 final ClipDescription desc = event.getClipDescription(); 2490 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2491 final int[] pos = new int[2]; 2492 layout.getLocationOnScreen(pos); 2493 // We need to offset the drag coordinates to layout coordinate space 2494 final int x = (int) event.getX() - pos[0]; 2495 final int y = (int) event.getY() - pos[1]; 2496 2497 switch (event.getAction()) { 2498 case DragEvent.ACTION_DRAG_STARTED: { 2499 // Validate this drag 2500 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2501 if (test != null) { 2502 boolean isShortcut = (test.second == null); 2503 if (isShortcut) { 2504 // Check if we have enough space on this screen to add a new shortcut 2505 if (!layout.findCellForSpan(pos, 1, 1)) { 2506 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2507 Toast.LENGTH_SHORT).show(); 2508 return false; 2509 } 2510 } 2511 } else { 2512 // Show error message if we couldn't accept any of the items 2513 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2514 Toast.LENGTH_SHORT).show(); 2515 return false; 2516 } 2517 2518 // Create the drag outline 2519 // We need to add extra padding to the bitmap to make room for the glow effect 2520 final Canvas canvas = new Canvas(); 2521 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2522 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2523 2524 // Show the current page outlines to indicate that we can accept this drop 2525 showOutlines(); 2526 layout.setIsDragOccuring(true); 2527 layout.onDragEnter(); 2528 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2529 2530 return true; 2531 } 2532 case DragEvent.ACTION_DRAG_LOCATION: 2533 // Visualize the drop location 2534 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2535 return true; 2536 case DragEvent.ACTION_DROP: { 2537 // Try and add any shortcuts 2538 final LauncherModel model = mLauncher.getModel(); 2539 final ClipData data = event.getClipData(); 2540 2541 // We assume that the mime types are ordered in descending importance of 2542 // representation. So we enumerate the list of mime types and alert the 2543 // user if any widgets can handle the drop. Only the most preferred 2544 // representation will be handled. 2545 pos[0] = x; 2546 pos[1] = y; 2547 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2548 if (test != null) { 2549 final int index = test.first; 2550 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2551 final boolean isShortcut = (widgets == null); 2552 final String mimeType = desc.getMimeType(index); 2553 if (isShortcut) { 2554 final Intent intent = data.getItemAt(index).getIntent(); 2555 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2556 onDropExternal(new int[] { x, y }, info, layout, false); 2557 } else { 2558 if (widgets.size() == 1) { 2559 // If there is only one item, then go ahead and add and configure 2560 // that widget 2561 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2562 final PendingAddWidgetInfo createInfo = 2563 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2564 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2565 } else { 2566 // Show the widget picker dialog if there is more than one widget 2567 // that can handle this data type 2568 final InstallWidgetReceiver.WidgetListAdapter adapter = 2569 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2570 data, widgets, layout, mCurrentPage, pos); 2571 final AlertDialog.Builder builder = 2572 new AlertDialog.Builder(mContext); 2573 builder.setAdapter(adapter, adapter); 2574 builder.setCancelable(true); 2575 builder.setTitle(mContext.getString( 2576 R.string.external_drop_widget_pick_title)); 2577 builder.setIcon(R.drawable.ic_no_applications); 2578 builder.show(); 2579 } 2580 } 2581 } 2582 return true; 2583 } 2584 case DragEvent.ACTION_DRAG_ENDED: 2585 // Hide the page outlines after the drop 2586 layout.setIsDragOccuring(false); 2587 layout.onDragExit(); 2588 hideOutlines(); 2589 return true; 2590 } 2591 return super.onDragEvent(event); 2592 } 2593 2594 /* 2595 * 2596 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2597 * coordinate space. The argument xy is modified with the return result. 2598 * 2599 */ 2600 void mapPointFromSelfToChild(View v, float[] xy) { 2601 mapPointFromSelfToChild(v, xy, null); 2602 } 2603 2604 /* 2605 * 2606 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2607 * coordinate space. The argument xy is modified with the return result. 2608 * 2609 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2610 * computing it itself; we use this to avoid redundant matrix inversions in 2611 * findMatchingPageForDragOver 2612 * 2613 */ 2614 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2615 if (cachedInverseMatrix == null) { 2616 v.getMatrix().invert(mTempInverseMatrix); 2617 cachedInverseMatrix = mTempInverseMatrix; 2618 } 2619 xy[0] = xy[0] + mScrollX - v.getLeft(); 2620 xy[1] = xy[1] + mScrollY - v.getTop(); 2621 cachedInverseMatrix.mapPoints(xy); 2622 } 2623 2624 /* 2625 * 2626 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2627 * the parent View's coordinate space. The argument xy is modified with the return result. 2628 * 2629 */ 2630 void mapPointFromChildToSelf(View v, float[] xy) { 2631 v.getMatrix().mapPoints(xy); 2632 xy[0] -= (mScrollX - v.getLeft()); 2633 xy[1] -= (mScrollY - v.getTop()); 2634 } 2635 2636 static private float squaredDistance(float[] point1, float[] point2) { 2637 float distanceX = point1[0] - point2[0]; 2638 float distanceY = point2[1] - point2[1]; 2639 return distanceX * distanceX + distanceY * distanceY; 2640 } 2641 2642 /* 2643 * 2644 * Returns true if the passed CellLayout cl overlaps with dragView 2645 * 2646 */ 2647 boolean overlaps(CellLayout cl, DragView dragView, 2648 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2649 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2650 final float[] draggedItemTopLeft = mTempDragCoordinates; 2651 draggedItemTopLeft[0] = dragViewX; 2652 draggedItemTopLeft[1] = dragViewY; 2653 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2654 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2655 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2656 2657 // Transform the dragged item's top left coordinates 2658 // to the CellLayout's local coordinates 2659 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2660 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2661 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2662 2663 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2664 // Transform the dragged item's bottom right coordinates 2665 // to the CellLayout's local coordinates 2666 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2667 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2668 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2669 2670 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2671 float overlap = (overlapRegionRight - overlapRegionLeft) * 2672 (overlapRegionBottom - overlapRegionTop); 2673 if (overlap > 0) { 2674 return true; 2675 } 2676 } 2677 } 2678 return false; 2679 } 2680 2681 /* 2682 * 2683 * This method returns the CellLayout that is currently being dragged to. In order to drag 2684 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2685 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2686 * 2687 * Return null if no CellLayout is currently being dragged over 2688 * 2689 */ 2690 private CellLayout findMatchingPageForDragOver( 2691 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2692 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2693 // with the item being dragged and then choose the one that's closest to the touch point 2694 final int screenCount = getChildCount(); 2695 CellLayout bestMatchingScreen = null; 2696 float smallestDistSoFar = Float.MAX_VALUE; 2697 2698 for (int i = 0; i < screenCount; i++) { 2699 CellLayout cl = (CellLayout)getChildAt(i); 2700 2701 final float[] touchXy = mTempTouchCoordinates; 2702 touchXy[0] = originX + offsetX; 2703 touchXy[1] = originY + offsetY; 2704 2705 // Transform the touch coordinates to the CellLayout's local coordinates 2706 // If the touch point is within the bounds of the cell layout, we can return immediately 2707 cl.getMatrix().invert(mTempInverseMatrix); 2708 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2709 2710 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2711 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2712 return cl; 2713 } 2714 2715 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2716 // Get the center of the cell layout in screen coordinates 2717 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2718 cellLayoutCenter[0] = cl.getWidth()/2; 2719 cellLayoutCenter[1] = cl.getHeight()/2; 2720 mapPointFromChildToSelf(cl, cellLayoutCenter); 2721 2722 touchXy[0] = originX + offsetX; 2723 touchXy[1] = originY + offsetY; 2724 2725 // Calculate the distance between the center of the CellLayout 2726 // and the touch point 2727 float dist = squaredDistance(touchXy, cellLayoutCenter); 2728 2729 if (dist < smallestDistSoFar) { 2730 smallestDistSoFar = dist; 2731 bestMatchingScreen = cl; 2732 } 2733 } 2734 } 2735 return bestMatchingScreen; 2736 } 2737 2738 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2739 DragView dragView, Object dragInfo) { 2740 // When touch is inside the scroll area, skip dragOver actions for the current screen 2741 if (!mInScrollArea) { 2742 CellLayout layout; 2743 int originX = x - xOffset; 2744 int originY = y - yOffset; 2745 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2746 if (shrunken) { 2747 mLastDragView = dragView; 2748 mLastDragOriginX = originX; 2749 mLastDragOriginY = originY; 2750 mLastDragXOffset = xOffset; 2751 mLastDragYOffset = yOffset; 2752 layout = findMatchingPageForDragOver(dragView, originX, originY, xOffset, yOffset); 2753 2754 if (layout != mDragTargetLayout) { 2755 if (mDragTargetLayout != null) { 2756 mDragTargetLayout.setIsDragOverlapping(false); 2757 mSpringLoadedDragController.onDragExit(); 2758 } 2759 mDragTargetLayout = layout; 2760 // In spring-loaded mode, we still want the user to be able to hover over a 2761 // full screen (which is traditionally set to not accept drops) if they want to 2762 // get to pages beyond the screen that is full. 2763 boolean allowDragOver = (mDragTargetLayout != null) && 2764 (mDragTargetLayout.getAcceptsDrops() || 2765 (mShrinkState == ShrinkState.SPRING_LOADED)); 2766 if (allowDragOver) { 2767 mDragTargetLayout.setIsDragOverlapping(true); 2768 mSpringLoadedDragController.onDragEnter( 2769 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2770 } 2771 } 2772 } else { 2773 layout = getCurrentDropLayout(); 2774 if (layout != mDragTargetLayout) { 2775 if (mDragTargetLayout != null) { 2776 mDragTargetLayout.onDragExit(); 2777 } 2778 layout.onDragEnter(); 2779 mDragTargetLayout = layout; 2780 } 2781 } 2782 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2783 layout = getCurrentDropLayout(); 2784 2785 final ItemInfo item = (ItemInfo)dragInfo; 2786 if (dragInfo instanceof LauncherAppWidgetInfo) { 2787 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2788 2789 if (widgetInfo.spanX == -1) { 2790 // Calculate the grid spans needed to fit this widget 2791 int[] spans = layout.rectToCell( 2792 widgetInfo.minWidth, widgetInfo.minHeight, null); 2793 item.spanX = spans[0]; 2794 item.spanY = spans[1]; 2795 } 2796 } 2797 2798 if (source instanceof AllAppsPagedView) { 2799 // This is a hack to fix the point used to determine which cell an icon from 2800 // the all apps screen is over 2801 if (item != null && item.spanX == 1 && layout != null) { 2802 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2803 2804 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2805 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2806 dragView.setDragRegion(dragView.getDragRegionLeft(), 2807 dragView.getDragRegionTop(), 2808 layout.getCellWidth(), 2809 dragView.getDragRegionHeight()); 2810 } 2811 } 2812 } else if (source == this) { 2813 // When dragging from the workspace, the drag view is slightly bigger than 2814 // the original view, and offset vertically. Adjust to account for this. 2815 final View origView = mDragInfo.cell; 2816 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2817 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2818 + dragView.getOffsetY(); 2819 } 2820 2821 if (mDragTargetLayout != null) { 2822 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2823 float[] localOrigin = { originX, originY }; 2824 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2825 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2826 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2827 } 2828 } 2829 } 2830 } 2831 2832 private void doDragExit() { 2833 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2834 if (mDragTargetLayout != null) { 2835 mDragTargetLayout.onDragExit(); 2836 } 2837 if (!mIsPageMoving) { 2838 hideOutlines(); 2839 } 2840 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2841 mLauncher.exitSpringLoadedDragMode(); 2842 } 2843 clearAllHovers(); 2844 } 2845 2846 public void onDragExit(DragSource source, int x, int y, int xOffset, 2847 int yOffset, DragView dragView, Object dragInfo) { 2848 doDragExit(); 2849 } 2850 2851 @Override 2852 public void getHitRect(Rect outRect) { 2853 // We want the workspace to have the whole area of the display (it will find the correct 2854 // cell layout to drop to in the existing drag/drop logic. 2855 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2856 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2857 } 2858 2859 /** 2860 * Add the item specified by dragInfo to the given layout. 2861 * @return true if successful 2862 */ 2863 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2864 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2865 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2866 return true; 2867 } 2868 mLauncher.showOutOfSpaceMessage(); 2869 return false; 2870 } 2871 2872 private void onDropExternal(int[] touchXY, Object dragInfo, 2873 CellLayout cellLayout, boolean insertAtFirst) { 2874 onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null, 0, 0); 2875 } 2876 2877 /** 2878 * Drop an item that didn't originate on one of the workspace screens. 2879 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2880 * come from another app altogether. 2881 * 2882 * NOTE: This can also be called when we are outside of a drag event, when we want 2883 * to add an item to one of the workspace screens. 2884 */ 2885 private void onDropExternal(int[] touchXY, Object dragInfo, 2886 CellLayout cellLayout, boolean insertAtFirst, DragView dragView, 2887 int dragViewX, int dragViewY) { 2888 int screen = indexOfChild(cellLayout); 2889 if (dragInfo instanceof PendingAddItemInfo) { 2890 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2891 // When dragging and dropping from customization tray, we deal with creating 2892 // widgets/shortcuts/folders in a slightly different way 2893 switch (info.itemType) { 2894 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2895 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2896 break; 2897 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2898 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2899 break; 2900 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2901 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2902 break; 2903 default: 2904 throw new IllegalStateException("Unknown item type: " + info.itemType); 2905 } 2906 cellLayout.onDragExit(); 2907 } else { 2908 // This is for other drag/drop cases, like dragging from All Apps 2909 ItemInfo info = (ItemInfo) dragInfo; 2910 View view = null; 2911 2912 switch (info.itemType) { 2913 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2914 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2915 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2916 // Came from all apps -- make a copy 2917 info = new ShortcutInfo((ApplicationInfo) info); 2918 } 2919 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2920 (ShortcutInfo) info); 2921 break; 2922 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2923 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2924 cellLayout, (UserFolderInfo) info, mIconCache); 2925 break; 2926 default: 2927 throw new IllegalStateException("Unknown item type: " + info.itemType); 2928 } 2929 2930 mTargetCell = new int[2]; 2931 if (touchXY != null) { 2932 // when dragging and dropping, just find the closest free spot 2933 cellLayout.findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, mTargetCell); 2934 } else { 2935 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2936 } 2937 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2938 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2939 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2940 cellLayout.onDropChild(view, animateDrop); 2941 cellLayout.animateDrop(); 2942 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2943 cellLayout.getChildrenLayout().measureChild(view); 2944 2945 if (dragView != null) { 2946 setPositionForDropAnimation(dragView, dragViewX, dragViewY, cellLayout, view); 2947 } 2948 2949 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2950 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2951 lp.cellX, lp.cellY); 2952 } 2953 } 2954 2955 /** 2956 * Return the current {@link CellLayout}, correctly picking the destination 2957 * screen while a scroll is in progress. 2958 */ 2959 public CellLayout getCurrentDropLayout() { 2960 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2961 } 2962 2963 /** 2964 * Return the current CellInfo describing our current drag; this method exists 2965 * so that Launcher can sync this object with the correct info when the activity is created/ 2966 * destroyed 2967 * 2968 */ 2969 public CellLayout.CellInfo getDragInfo() { 2970 return mDragInfo; 2971 } 2972 2973 /** 2974 * Calculate the nearest cell where the given object would be dropped. 2975 */ 2976 private int[] findNearestVacantArea(int pixelX, int pixelY, 2977 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2978 2979 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2980 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2981 2982 // Find the best target drop location 2983 return layout.findNearestVacantArea( 2984 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2985 } 2986 2987 void setLauncher(Launcher launcher) { 2988 mLauncher = launcher; 2989 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2990 2991 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2992 if (mCustomizationDrawer != null) { 2993 mCustomizationDrawerContent = 2994 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2995 } 2996 } 2997 2998 public void setDragController(DragController dragController) { 2999 mDragController = dragController; 3000 } 3001 3002 /** 3003 * Called at the end of a drag which originated on the workspace. 3004 */ 3005 public void onDropCompleted(View target, Object dragInfo, boolean success) { 3006 if (success) { 3007 if (target != this && mDragInfo != null) { 3008 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 3009 cellLayout.removeView(mDragInfo.cell); 3010 if (mDragInfo.cell instanceof DropTarget) { 3011 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 3012 } 3013 // final Object tag = mDragInfo.cell.getTag(); 3014 } 3015 } else if (mDragInfo != null) { 3016 // NOTE: When 'success' is true, onDragExit is called by the DragController before 3017 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 3018 // moved into DragController.cancelDrag(). 3019 doDragExit(); 3020 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 3021 } 3022 mLauncher.unlockScreenOrientation(); 3023 mDragOutline = null; 3024 mDragInfo = null; 3025 } 3026 3027 @Override 3028 public void onDragViewVisible() { 3029 ((View) mDragInfo.cell).setVisibility(View.GONE); 3030 } 3031 3032 public boolean isDropEnabled() { 3033 return true; 3034 } 3035 3036 @Override 3037 protected void onRestoreInstanceState(Parcelable state) { 3038 super.onRestoreInstanceState(state); 3039 Launcher.setScreen(mCurrentPage); 3040 } 3041 3042 @Override 3043 public void scrollLeft() { 3044 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3045 super.scrollLeft(); 3046 } 3047 } 3048 3049 @Override 3050 public void scrollRight() { 3051 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3052 super.scrollRight(); 3053 } 3054 } 3055 3056 @Override 3057 public void onEnterScrollArea(int direction) { 3058 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3059 mInScrollArea = true; 3060 mPendingScrollDirection = direction; 3061 3062 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3063 final CellLayout layout = (CellLayout) getChildAt(page); 3064 3065 if (layout != null) { 3066 layout.setIsDragOverlapping(true); 3067 3068 if (mDragTargetLayout != null) { 3069 mDragTargetLayout.onDragExit(); 3070 mDragTargetLayout = null; 3071 } 3072 // In portrait, need to redraw the edge glow when entering the scroll area 3073 if (getHeight() > getWidth()) { 3074 invalidate(); 3075 } 3076 } 3077 } 3078 } 3079 3080 private void clearAllHovers() { 3081 final int childCount = getChildCount(); 3082 for (int i = 0; i < childCount; i++) { 3083 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3084 } 3085 mSpringLoadedDragController.onDragExit(); 3086 3087 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3088 // so we need to redraw the workspace when this may have changed. 3089 if (getHeight() > getWidth()) { 3090 invalidate(); 3091 } 3092 } 3093 3094 @Override 3095 public void onExitScrollArea() { 3096 if (mInScrollArea) { 3097 mInScrollArea = false; 3098 mPendingScrollDirection = DragController.SCROLL_NONE; 3099 clearAllHovers(); 3100 } 3101 } 3102 3103 public Folder getFolderForTag(Object tag) { 3104 final int screenCount = getChildCount(); 3105 for (int screen = 0; screen < screenCount; screen++) { 3106 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3107 int count = currentScreen.getChildCount(); 3108 for (int i = 0; i < count; i++) { 3109 View child = currentScreen.getChildAt(i); 3110 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3111 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3112 Folder f = (Folder) child; 3113 if (f.getInfo() == tag && f.getInfo().opened) { 3114 return f; 3115 } 3116 } 3117 } 3118 } 3119 return null; 3120 } 3121 3122 public View getViewForTag(Object tag) { 3123 int screenCount = getChildCount(); 3124 for (int screen = 0; screen < screenCount; screen++) { 3125 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3126 int count = currentScreen.getChildCount(); 3127 for (int i = 0; i < count; i++) { 3128 View child = currentScreen.getChildAt(i); 3129 if (child.getTag() == tag) { 3130 return child; 3131 } 3132 } 3133 } 3134 return null; 3135 } 3136 3137 3138 void removeItems(final ArrayList<ApplicationInfo> apps) { 3139 final int screenCount = getChildCount(); 3140 final PackageManager manager = getContext().getPackageManager(); 3141 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3142 3143 final HashSet<String> packageNames = new HashSet<String>(); 3144 final int appCount = apps.size(); 3145 for (int i = 0; i < appCount; i++) { 3146 packageNames.add(apps.get(i).componentName.getPackageName()); 3147 } 3148 3149 for (int i = 0; i < screenCount; i++) { 3150 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3151 final ViewGroup layout = layoutParent.getChildrenLayout(); 3152 3153 // Avoid ANRs by treating each screen separately 3154 post(new Runnable() { 3155 public void run() { 3156 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3157 childrenToRemove.clear(); 3158 3159 int childCount = layout.getChildCount(); 3160 for (int j = 0; j < childCount; j++) { 3161 final View view = layout.getChildAt(j); 3162 Object tag = view.getTag(); 3163 3164 if (tag instanceof ShortcutInfo) { 3165 final ShortcutInfo info = (ShortcutInfo) tag; 3166 final Intent intent = info.intent; 3167 final ComponentName name = intent.getComponent(); 3168 3169 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3170 for (String packageName: packageNames) { 3171 if (packageName.equals(name.getPackageName())) { 3172 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3173 childrenToRemove.add(view); 3174 } 3175 } 3176 } 3177 } else if (tag instanceof UserFolderInfo) { 3178 final UserFolderInfo info = (UserFolderInfo) tag; 3179 final ArrayList<ShortcutInfo> contents = info.contents; 3180 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3181 final int contentsCount = contents.size(); 3182 boolean removedFromFolder = false; 3183 3184 for (int k = 0; k < contentsCount; k++) { 3185 final ShortcutInfo appInfo = contents.get(k); 3186 final Intent intent = appInfo.intent; 3187 final ComponentName name = intent.getComponent(); 3188 3189 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3190 for (String packageName: packageNames) { 3191 if (packageName.equals(name.getPackageName())) { 3192 toRemove.add(appInfo); 3193 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3194 removedFromFolder = true; 3195 } 3196 } 3197 } 3198 } 3199 3200 contents.removeAll(toRemove); 3201 if (removedFromFolder) { 3202 final Folder folder = getOpenFolder(); 3203 if (folder != null) 3204 folder.notifyDataSetChanged(); 3205 } 3206 } else if (tag instanceof LiveFolderInfo) { 3207 final LiveFolderInfo info = (LiveFolderInfo) tag; 3208 final Uri uri = info.uri; 3209 final ProviderInfo providerInfo = manager.resolveContentProvider( 3210 uri.getAuthority(), 0); 3211 3212 if (providerInfo != null) { 3213 for (String packageName: packageNames) { 3214 if (packageName.equals(providerInfo.packageName)) { 3215 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3216 childrenToRemove.add(view); 3217 } 3218 } 3219 } 3220 } else if (tag instanceof LauncherAppWidgetInfo) { 3221 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3222 final AppWidgetProviderInfo provider = 3223 widgets.getAppWidgetInfo(info.appWidgetId); 3224 if (provider != null) { 3225 for (String packageName: packageNames) { 3226 if (packageName.equals(provider.provider.getPackageName())) { 3227 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3228 childrenToRemove.add(view); 3229 } 3230 } 3231 } 3232 } 3233 } 3234 3235 childCount = childrenToRemove.size(); 3236 for (int j = 0; j < childCount; j++) { 3237 View child = childrenToRemove.get(j); 3238 // Note: We can not remove the view directly from CellLayoutChildren as this 3239 // does not re-mark the spaces as unoccupied. 3240 layoutParent.removeViewInLayout(child); 3241 if (child instanceof DropTarget) { 3242 mDragController.removeDropTarget((DropTarget)child); 3243 } 3244 } 3245 3246 if (childCount > 0) { 3247 layout.requestLayout(); 3248 layout.invalidate(); 3249 } 3250 } 3251 }); 3252 } 3253 } 3254 3255 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3256 final int screenCount = getChildCount(); 3257 for (int i = 0; i < screenCount; i++) { 3258 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3259 int childCount = layout.getChildCount(); 3260 for (int j = 0; j < childCount; j++) { 3261 final View view = layout.getChildAt(j); 3262 Object tag = view.getTag(); 3263 if (tag instanceof ShortcutInfo) { 3264 ShortcutInfo info = (ShortcutInfo)tag; 3265 // We need to check for ACTION_MAIN otherwise getComponent() might 3266 // return null for some shortcuts (for instance, for shortcuts to 3267 // web pages.) 3268 final Intent intent = info.intent; 3269 final ComponentName name = intent.getComponent(); 3270 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3271 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3272 final int appCount = apps.size(); 3273 for (int k = 0; k < appCount; k++) { 3274 ApplicationInfo app = apps.get(k); 3275 if (app.componentName.equals(name)) { 3276 info.setIcon(mIconCache.getIcon(info.intent)); 3277 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3278 new FastBitmapDrawable(info.getIcon(mIconCache)), 3279 null, null); 3280 } 3281 } 3282 } 3283 } 3284 } 3285 } 3286 } 3287 3288 void moveToDefaultScreen(boolean animate) { 3289 if (mIsSmall || mIsInUnshrinkAnimation) { 3290 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3291 } else if (animate) { 3292 snapToPage(mDefaultPage); 3293 } else { 3294 setCurrentPage(mDefaultPage); 3295 } 3296 getChildAt(mDefaultPage).requestFocus(); 3297 } 3298 3299 void setIndicators(Drawable previous, Drawable next) { 3300 mPreviousIndicator = previous; 3301 mNextIndicator = next; 3302 previous.setLevel(mCurrentPage); 3303 next.setLevel(mCurrentPage); 3304 } 3305 3306 @Override 3307 public void syncPages() { 3308 } 3309 3310 @Override 3311 public void syncPageItems(int page) { 3312 } 3313 3314} 3315