Workspace.java revision f70c78142457b0e9c691f2a20ed87407c7433f5b
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.TimeInterpolator; 27import android.animation.ValueAnimator; 28import android.animation.Animator.AnimatorListener; 29import android.animation.ValueAnimator.AnimatorUpdateListener; 30import android.app.AlertDialog; 31import android.app.WallpaperManager; 32import android.appwidget.AppWidgetManager; 33import android.appwidget.AppWidgetProviderInfo; 34import android.content.ClipData; 35import android.content.ClipDescription; 36import android.content.ComponentName; 37import android.content.Context; 38import android.content.Intent; 39import android.content.pm.PackageManager; 40import android.content.pm.ProviderInfo; 41import android.content.res.Resources; 42import android.content.res.TypedArray; 43import android.graphics.Bitmap; 44import android.graphics.Camera; 45import android.graphics.Canvas; 46import android.graphics.Matrix; 47import android.graphics.Paint; 48import android.graphics.Rect; 49import android.graphics.RectF; 50import android.graphics.Region.Op; 51import android.graphics.drawable.Drawable; 52import android.net.Uri; 53import android.os.IBinder; 54import android.os.Parcelable; 55import android.util.AttributeSet; 56import android.util.Log; 57import android.util.Pair; 58import android.view.Display; 59import android.view.DragEvent; 60import android.view.MotionEvent; 61import android.view.View; 62import android.view.ViewGroup; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TabHost; 65import android.widget.TabWidget; 66import android.widget.TextView; 67import android.widget.Toast; 68 69import java.util.ArrayList; 70import java.util.HashSet; 71import java.util.List; 72 73/** 74 * The workspace is a wide area with a wallpaper and a finite number of pages. 75 * Each page contains a number of icons, folders or widgets the user can 76 * interact with. A workspace is meant to be used with a fixed width only. 77 */ 78public class Workspace extends SmoothPagedView 79 implements DropTarget, DragSource, DragScroller, View.OnTouchListener, 80 View.OnClickListener { 81 @SuppressWarnings({"UnusedDeclaration"}) 82 private static final String TAG = "Launcher.Workspace"; 83 84 // This is how much the workspace shrinks when we enter all apps or 85 // customization mode 86 private static final float SHRINK_FACTOR = 0.16f; 87 88 // How much the screens shrink when we enter spring loaded drag mode 89 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 90 91 // Y rotation to apply to the workspace screens 92 private static final float WORKSPACE_ROTATION = 12.5f; 93 94 // These are extra scale factors to apply to the mini home screens 95 // so as to achieve the desired transform 96 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 97 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 98 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 99 100 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 101 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 102 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 103 104 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 105 private static final int BACKGROUND_FADE_IN_DURATION = 350; 106 107 // These animators are used to fade the children's outlines 108 private ObjectAnimator mChildrenOutlineFadeInAnimation; 109 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 110 private float mChildrenOutlineAlpha = 0; 111 112 // These properties refer to the background protection gradient used for AllApps and Customize 113 private ValueAnimator mBackgroundFadeInAnimation; 114 private ValueAnimator mBackgroundFadeOutAnimation; 115 private Drawable mBackground; 116 private Drawable mCustomizeTrayBackground; 117 boolean mDrawBackground = true; 118 private boolean mDrawCustomizeTrayBackground; 119 private float mBackgroundAlpha = 0; 120 private float mOverScrollMaxBackgroundAlpha = 0.0f; 121 private int mOverScrollPageIndex = -1; 122 123 private View mCustomizationDrawer; 124 private View mCustomizationDrawerContent; 125 private int[] mCustomizationDrawerPos = new int[2]; 126 private float[] mCustomizationDrawerTransformedPos = new float[2]; 127 128 private final WallpaperManager mWallpaperManager; 129 private IBinder mWindowToken; 130 131 private int mDefaultPage; 132 133 private boolean mIsDragInProcess = false; 134 135 /** 136 * CellInfo for the cell that is currently being dragged 137 */ 138 private CellLayout.CellInfo mDragInfo; 139 140 /** 141 * Target drop area calculated during last acceptDrop call. 142 */ 143 private int[] mTargetCell = null; 144 145 /** 146 * The CellLayout that is currently being dragged over 147 */ 148 private CellLayout mDragTargetLayout = null; 149 150 private Launcher mLauncher; 151 private IconCache mIconCache; 152 private DragController mDragController; 153 154 // These are temporary variables to prevent having to allocate a new object just to 155 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 156 private int[] mTempCell = new int[2]; 157 private int[] mTempEstimate = new int[2]; 158 private float[] mTempOriginXY = new float[2]; 159 private float[] mTempDragCoordinates = new float[2]; 160 private float[] mTempTouchCoordinates = new float[2]; 161 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 162 private float[] mTempDragBottomRightCoordinates = new float[2]; 163 private Matrix mTempInverseMatrix = new Matrix(); 164 165 private SpringLoadedDragController mSpringLoadedDragController; 166 167 private static final int DEFAULT_CELL_COUNT_X = 4; 168 private static final int DEFAULT_CELL_COUNT_Y = 4; 169 170 private Drawable mPreviousIndicator; 171 private Drawable mNextIndicator; 172 173 // State variable that indicates whether the pages are small (ie when you're 174 // in all apps or customize mode) 175 private boolean mIsSmall = false; 176 private boolean mIsInUnshrinkAnimation = false; 177 private AnimatorListener mShrinkAnimationListener; 178 private AnimatorListener mUnshrinkAnimationListener; 179 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 180 private ShrinkState mShrinkState; 181 private boolean mWasSpringLoadedOnDragExit = false; 182 private boolean mWaitingToShrink = false; 183 private ShrinkState mWaitingToShrinkState; 184 private AnimatorSet mAnimator; 185 186 /** Is the user is dragging an item near the edge of a page? */ 187 private boolean mInScrollArea = false; 188 189 /** If mInScrollArea is true, the direction of the scroll. */ 190 private int mPendingScrollDirection = DragController.SCROLL_NONE; 191 192 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 193 private Bitmap mDragOutline = null; 194 private final Rect mTempRect = new Rect(); 195 private final int[] mTempXY = new int[2]; 196 197 private ValueAnimator mDropAnim = null; 198 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 199 private View mDropView = null; 200 private int[] mDropViewPos = new int[] { -1, -1 }; 201 202 // Paint used to draw external drop outline 203 private final Paint mExternalDragOutlinePaint = new Paint(); 204 205 // Camera and Matrix used to determine the final position of a neighboring CellLayout 206 private final Matrix mMatrix = new Matrix(); 207 private final Camera mCamera = new Camera(); 208 private final float mTempFloat2[] = new float[2]; 209 210 enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM }; 211 int mWallpaperWidth; 212 int mWallpaperHeight; 213 WallpaperOffsetInterpolator mWallpaperOffset; 214 boolean mUpdateWallpaperOffsetImmediately = false; 215 boolean mSyncWallpaperOffsetWithScroll = true; 216 217 // info about the last drag 218 private DragView mLastDragView; 219 private int mLastDragOriginX; 220 private int mLastDragOriginY; 221 private int mLastDragXOffset; 222 private int mLastDragYOffset; 223 224 // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) 225 private float mXDown; 226 private float mYDown; 227 final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; 228 final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; 229 final static float TOUCH_SLOP_DAMPING_FACTOR = 4; 230 231 /** 232 * Used to inflate the Workspace from XML. 233 * 234 * @param context The application's context. 235 * @param attrs The attributes set containing the Workspace's customization values. 236 */ 237 public Workspace(Context context, AttributeSet attrs) { 238 this(context, attrs, 0); 239 } 240 241 /** 242 * Used to inflate the Workspace from XML. 243 * 244 * @param context The application's context. 245 * @param attrs The attributes set containing the Workspace's customization values. 246 * @param defStyle Unused. 247 */ 248 public Workspace(Context context, AttributeSet attrs, int defStyle) { 249 super(context, attrs, defStyle); 250 mContentIsRefreshable = false; 251 252 if (!LauncherApplication.isScreenXLarge()) { 253 mFadeInAdjacentScreens = false; 254 } 255 256 mWallpaperManager = WallpaperManager.getInstance(context); 257 258 TypedArray a = context.obtainStyledAttributes(attrs, 259 R.styleable.Workspace, defStyle, 0); 260 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 261 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 262 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 263 a.recycle(); 264 265 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 266 setHapticFeedbackEnabled(false); 267 268 initWorkspace(); 269 270 // Disable multitouch across the workspace/all apps/customize tray 271 setMotionEventSplittingEnabled(true); 272 } 273 274 /** 275 * Initializes various states for this workspace. 276 */ 277 protected void initWorkspace() { 278 Context context = getContext(); 279 mCurrentPage = mDefaultPage; 280 Launcher.setScreen(mCurrentPage); 281 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 282 mIconCache = app.getIconCache(); 283 mExternalDragOutlinePaint.setAntiAlias(true); 284 setWillNotDraw(false); 285 286 try { 287 final Resources res = getResources(); 288 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 289 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 290 } catch (Resources.NotFoundException e) { 291 // In this case, we will skip drawing background protection 292 } 293 294 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 295 @Override 296 public void onAnimationStart(Animator animation) { 297 mIsInUnshrinkAnimation = true; 298 } 299 300 @Override 301 public void onAnimationEnd(Animator animation) { 302 mIsInUnshrinkAnimation = false; 303 mSyncWallpaperOffsetWithScroll = true; 304 if (mShrinkState == ShrinkState.SPRING_LOADED) { 305 View layout = null; 306 if (mLastDragView != null) { 307 layout = findMatchingPageForDragOver(mLastDragView, mLastDragOriginX, 308 mLastDragOriginY, mLastDragXOffset, mLastDragYOffset); 309 } 310 mSpringLoadedDragController.onEnterSpringLoadedMode(layout == null); 311 } else { 312 mDrawCustomizeTrayBackground = false; 313 } 314 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 315 mAnimator = null; 316 enableChildrenLayers(false); 317 } 318 }; 319 mShrinkAnimationListener = new AnimatorListenerAdapter() { 320 @Override 321 public void onAnimationStart(Animator animation) { 322 enableChildrenLayers(true); 323 } 324 @Override 325 public void onAnimationEnd(Animator animation) { 326 mWallpaperOffset.setOverrideHorizontalCatchupConstant(false); 327 mAnimator = null; 328 } 329 }; 330 mSnapVelocity = 600; 331 mWallpaperOffset = new WallpaperOffsetInterpolator(); 332 } 333 334 @Override 335 protected int getScrollMode() { 336 if (LauncherApplication.isScreenXLarge()) { 337 return SmoothPagedView.X_LARGE_MODE; 338 } else { 339 return SmoothPagedView.DEFAULT_MODE; 340 } 341 } 342 343 @Override 344 public void addView(View child, int index, LayoutParams params) { 345 if (!(child instanceof CellLayout)) { 346 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 347 } 348 ((CellLayout) child).setOnInterceptTouchListener(this); 349 child.setOnClickListener(this); 350 child.setClickable(true); 351 super.addView(child, index, params); 352 } 353 354 @Override 355 public void addView(View child) { 356 if (!(child instanceof CellLayout)) { 357 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 358 } 359 ((CellLayout) child).setOnInterceptTouchListener(this); 360 child.setOnClickListener(this); 361 child.setClickable(true); 362 super.addView(child); 363 } 364 365 @Override 366 public void addView(View child, int index) { 367 if (!(child instanceof CellLayout)) { 368 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 369 } 370 ((CellLayout) child).setOnInterceptTouchListener(this); 371 child.setOnClickListener(this); 372 child.setClickable(true); 373 super.addView(child, index); 374 } 375 376 @Override 377 public void addView(View child, int width, int height) { 378 if (!(child instanceof CellLayout)) { 379 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 380 } 381 ((CellLayout) child).setOnInterceptTouchListener(this); 382 child.setOnClickListener(this); 383 child.setClickable(true); 384 super.addView(child, width, height); 385 } 386 387 @Override 388 public void addView(View child, LayoutParams params) { 389 if (!(child instanceof CellLayout)) { 390 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 391 } 392 ((CellLayout) child).setOnInterceptTouchListener(this); 393 child.setOnClickListener(this); 394 child.setClickable(true); 395 super.addView(child, params); 396 } 397 398 /** 399 * @return The open folder on the current screen, or null if there is none 400 */ 401 Folder getOpenFolder() { 402 ViewGroup currentPage = ((CellLayout) getChildAt(mCurrentPage)).getChildrenLayout(); 403 int count = currentPage.getChildCount(); 404 for (int i = 0; i < count; i++) { 405 View child = currentPage.getChildAt(i); 406 if (child instanceof Folder) { 407 Folder folder = (Folder) child; 408 if (folder.getInfo().opened) 409 return folder; 410 } 411 } 412 return null; 413 } 414 415 ArrayList<Folder> getOpenFolders() { 416 final int screenCount = getChildCount(); 417 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 418 419 for (int screen = 0; screen < screenCount; screen++) { 420 ViewGroup currentPage = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 421 int count = currentPage.getChildCount(); 422 for (int i = 0; i < count; i++) { 423 View child = currentPage.getChildAt(i); 424 if (child instanceof Folder) { 425 Folder folder = (Folder) child; 426 if (folder.getInfo().opened) 427 folders.add(folder); 428 break; 429 } 430 } 431 } 432 return folders; 433 } 434 435 boolean isTouchActive() { 436 return mTouchState != TOUCH_STATE_REST; 437 } 438 439 /** 440 * Adds the specified child in the specified screen. The position and dimension of 441 * the child are defined by x, y, spanX and spanY. 442 * 443 * @param child The child to add in one of the workspace's screens. 444 * @param screen The screen in which to add the child. 445 * @param x The X position of the child in the screen's grid. 446 * @param y The Y position of the child in the screen's grid. 447 * @param spanX The number of cells spanned horizontally by the child. 448 * @param spanY The number of cells spanned vertically by the child. 449 */ 450 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 451 addInScreen(child, screen, x, y, spanX, spanY, false); 452 } 453 454 void addInFullScreen(View child, int screen) { 455 addInScreen(child, screen, 0, 0, -1, -1); 456 } 457 458 /** 459 * Adds the specified child in the specified screen. The position and dimension of 460 * the child are defined by x, y, spanX and spanY. 461 * 462 * @param child The child to add in one of the workspace's screens. 463 * @param screen The screen in which to add the child. 464 * @param x The X position of the child in the screen's grid. 465 * @param y The Y position of the child in the screen's grid. 466 * @param spanX The number of cells spanned horizontally by the child. 467 * @param spanY The number of cells spanned vertically by the child. 468 * @param insert When true, the child is inserted at the beginning of the children list. 469 */ 470 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 471 if (screen < 0 || screen >= getChildCount()) { 472 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 473 + " (was " + screen + "); skipping child"); 474 return; 475 } 476 477 final CellLayout group = (CellLayout) getChildAt(screen); 478 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 479 if (lp == null) { 480 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 481 } else { 482 lp.cellX = x; 483 lp.cellY = y; 484 lp.cellHSpan = spanX; 485 lp.cellVSpan = spanY; 486 } 487 488 // Get the canonical child id to uniquely represent this view in this screen 489 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 490 boolean markCellsAsOccupied = !(child instanceof Folder); 491 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 492 // TODO: This branch occurs when the workspace is adding views 493 // outside of the defined grid 494 // maybe we should be deleting these items from the LauncherModel? 495 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 496 } 497 498 if (!(child instanceof Folder)) { 499 child.setHapticFeedbackEnabled(false); 500 child.setOnLongClickListener(mLongClickListener); 501 } 502 if (child instanceof DropTarget) { 503 mDragController.addDropTarget((DropTarget) child); 504 } 505 } 506 507 /** 508 * Check if the point (x, y) hits a given page. 509 */ 510 private boolean hitsPage(int index, float x, float y) { 511 final View page = getChildAt(index); 512 if (page != null) { 513 float[] localXY = { x, y }; 514 mapPointFromSelfToChild(page, localXY); 515 return (localXY[0] >= 0 && localXY[0] < page.getWidth() 516 && localXY[1] >= 0 && localXY[1] < page.getHeight()); 517 } 518 return false; 519 } 520 521 @Override 522 protected boolean hitsPreviousPage(float x, float y) { 523 // mNextPage is set to INVALID_PAGE whenever we are stationary. 524 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 525 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 526 return hitsPage(current - 1, x, y); 527 } 528 529 @Override 530 protected boolean hitsNextPage(float x, float y) { 531 // mNextPage is set to INVALID_PAGE whenever we are stationary. 532 // Calculating "next page" this way ensures that you scroll to whatever page you tap on 533 final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage; 534 return hitsPage(current + 1, x, y); 535 } 536 537 /** 538 * Called directly from a CellLayout (not by the framework), after we've been added as a 539 * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout 540 * that it should intercept touch events, which is not something that is normally supported. 541 */ 542 @Override 543 public boolean onTouch(View v, MotionEvent event) { 544 return (mIsSmall || mIsInUnshrinkAnimation); 545 } 546 547 /** 548 * Handle a click event on a CellLayout. 549 */ 550 @Override 551 public void onClick(View cellLayout) { 552 // Only allow clicks on a CellLayout if it is shrunken and visible. 553 if ((mIsSmall || mIsInUnshrinkAnimation) && mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 554 mLauncher.onWorkspaceClick((CellLayout) cellLayout); 555 } 556 } 557 558 protected void onWindowVisibilityChanged (int visibility) { 559 mLauncher.onWindowVisibilityChanged(visibility); 560 } 561 562 @Override 563 public boolean dispatchUnhandledMove(View focused, int direction) { 564 if (mIsSmall || mIsInUnshrinkAnimation) { 565 // when the home screens are shrunken, shouldn't allow side-scrolling 566 return false; 567 } 568 return super.dispatchUnhandledMove(focused, direction); 569 } 570 571 @Override 572 public boolean onInterceptTouchEvent(MotionEvent ev) { 573 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 574 mXDown = ev.getX(); 575 mYDown = ev.getY(); 576 } 577 578 if (mIsSmall || mIsInUnshrinkAnimation) { 579 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 580 // Intercept this event so we can show the workspace in full view 581 // when it is clicked on and it is small 582 AllAppsPagedView allApps = (AllAppsPagedView) 583 mLauncher.findViewById(R.id.all_apps_paged_view); 584 if (allApps != null) { 585 allApps.onInterceptTouchEvent(ev); 586 } 587 return true; 588 } 589 return false; 590 } 591 return super.onInterceptTouchEvent(ev); 592 } 593 594 @Override 595 protected void determineScrollingStart(MotionEvent ev) { 596 if (!mIsSmall && !mIsInUnshrinkAnimation) { 597 float deltaX = Math.abs(ev.getX() - mXDown); 598 float deltaY = Math.abs(ev.getY() - mYDown); 599 600 if (Float.compare(deltaX, 0f) == 0) return; 601 602 float slope = deltaY / deltaX; 603 float theta = (float) Math.atan(slope); 604 605 if (deltaX > mTouchSlop || deltaY > mTouchSlop) { 606 cancelCurrentPageLongPress(); 607 } 608 609 if (theta > MAX_SWIPE_ANGLE) { 610 // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace 611 return; 612 } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { 613 // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to 614 // increase the touch slop to make it harder to begin scrolling the workspace. This 615 // results in vertically scrolling widgets to more easily. The higher the angle, the 616 // more we increase touch slop. 617 theta -= START_DAMPING_TOUCH_SLOP_ANGLE; 618 float extraRatio = (float) 619 Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); 620 super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); 621 } else { 622 // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special 623 super.determineScrollingStart(ev); 624 } 625 } 626 } 627 628 protected void onPageBeginMoving() { 629 if (mNextPage != INVALID_PAGE) { 630 // we're snapping to a particular screen 631 enableChildrenCache(mCurrentPage, mNextPage); 632 } else { 633 // this is when user is actively dragging a particular screen, they might 634 // swipe it either left or right (but we won't advance by more than one screen) 635 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 636 } 637 showOutlines(); 638 } 639 640 protected void onPageEndMoving() { 641 clearChildrenCache(); 642 // Hide the outlines, as long as we're not dragging 643 if (!mDragController.dragging()) { 644 hideOutlines(); 645 } 646 mOverScrollMaxBackgroundAlpha = 0.0f; 647 mOverScrollPageIndex = -1; 648 } 649 650 @Override 651 protected void notifyPageSwitchListener() { 652 super.notifyPageSwitchListener(); 653 654 if (mPreviousIndicator != null) { 655 // if we know the next page, we show the indication for it right away; it looks 656 // weird if the indicators are lagging 657 int page = mNextPage; 658 if (page == INVALID_PAGE) { 659 page = mCurrentPage; 660 } 661 mPreviousIndicator.setLevel(page); 662 mNextIndicator.setLevel(page); 663 } 664 Launcher.setScreen(mCurrentPage); 665 }; 666 667 // As a ratio of screen height, the total distance we want the parallax effect to span 668 // vertically 669 private float wallpaperTravelToScreenHeightRatio(int width, int height) { 670 return 1.1f; 671 } 672 673 // As a ratio of screen height, the total distance we want the parallax effect to span 674 // horizontally 675 private float wallpaperTravelToScreenWidthRatio(int width, int height) { 676 float aspectRatio = width / (float) height; 677 678 // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width 679 // At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width 680 // We will use these two data points to extrapolate how much the wallpaper parallax effect 681 // to span (ie travel) at any aspect ratio: 682 683 final float ASPECT_RATIO_LANDSCAPE = 16/10f; 684 final float ASPECT_RATIO_PORTRAIT = 10/16f; 685 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f; 686 final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f; 687 688 // To find out the desired width at different aspect ratios, we use the following two 689 // formulas, where the coefficient on x is the aspect ratio (width/height): 690 // (16/10)x + y = 1.5 691 // (10/16)x + y = 1.2 692 // We solve for x and y and end up with a final formula: 693 final float x = 694 (WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) / 695 (ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT); 696 final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT; 697 return x * aspectRatio + y; 698 } 699 700 // The range of scroll values for Workspace 701 private int getScrollRange() { 702 return getChildOffset(getChildCount() - 1) - getChildOffset(0); 703 } 704 705 protected void setWallpaperDimension() { 706 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 707 final int maxDim = Math.max(display.getWidth(), display.getHeight()); 708 final int minDim = Math.min(display.getWidth(), display.getHeight()); 709 710 // We need to ensure that there is enough extra space in the wallpaper for the intended 711 // parallax effects 712 mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); 713 mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim)); 714 new Thread("setWallpaperDimension") { 715 public void run() { 716 mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight); 717 } 718 }.start(); 719 } 720 721 public void setVerticalWallpaperOffset(float offset) { 722 mWallpaperOffset.setFinalY(offset); 723 } 724 public float getVerticalWallpaperOffset() { 725 return mWallpaperOffset.getCurrY(); 726 } 727 public void setHorizontalWallpaperOffset(float offset) { 728 mWallpaperOffset.setFinalX(offset); 729 } 730 public float getHorizontalWallpaperOffset() { 731 return mWallpaperOffset.getCurrX(); 732 } 733 734 private float wallpaperOffsetForCurrentScroll() { 735 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 736 final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null); 737 // The wallpaper travel width is how far, from left to right, the wallpaper will move 738 // at this orientation (for example, in portrait mode we don't move all the way to the 739 // edges of the wallpaper, or otherwise the parallax effect would be too strong) 740 int wallpaperTravelWidth = (int) (display.getWidth() * 741 wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight())); 742 if (!isStaticWallpaper) { 743 wallpaperTravelWidth = mWallpaperWidth; 744 } 745 746 // Set wallpaper offset steps (1 / (number of screens - 1)) 747 // We have 3 vertical offset states (centered, and then top/bottom aligned 748 // for all apps/customize) 749 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1)); 750 751 int scrollRange = getScrollRange(); 752 float scrollProgressOffset = 0; 753 754 // Account for overscroll: you only see the absolute edge of the wallpaper if 755 // you overscroll as far as you can in landscape mode. Only do this for static wallpapers 756 // because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset 757 // being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1]) 758 if (isStaticWallpaper) { 759 int overscrollOffset = (int) (maxOverScroll() * display.getWidth()); 760 scrollProgressOffset += overscrollOffset / (float) getScrollRange(); 761 scrollRange += 2 * overscrollOffset; 762 } 763 764 float scrollProgress = 765 mScrollX / (float) scrollRange + scrollProgressOffset; 766 float offsetInDips = wallpaperTravelWidth * scrollProgress + 767 (mWallpaperWidth - wallpaperTravelWidth) / 2; // center it 768 float offset = offsetInDips / (float) mWallpaperWidth; 769 return offset; 770 } 771 private void syncWallpaperOffsetWithScroll() { 772 if (LauncherApplication.isScreenXLarge()) { 773 mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll()); 774 } 775 } 776 777 public void updateWallpaperOffsetImmediately() { 778 mUpdateWallpaperOffsetImmediately = true; 779 } 780 781 private void updateWallpaperOffsets() { 782 boolean updateNow = false; 783 boolean keepUpdating = true; 784 if (mUpdateWallpaperOffsetImmediately) { 785 updateNow = true; 786 keepUpdating = false; 787 mWallpaperOffset.jumpToFinal(); 788 mUpdateWallpaperOffsetImmediately = false; 789 } else { 790 updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset(); 791 } 792 if (updateNow) { 793 if (mWindowToken != null) { 794 mWallpaperManager.setWallpaperOffsets(mWindowToken, 795 mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY()); 796 } 797 } 798 if (keepUpdating) { 799 fastInvalidate(); 800 } 801 } 802 803 class WallpaperOffsetInterpolator { 804 float mFinalHorizontalWallpaperOffset = 0.0f; 805 float mFinalVerticalWallpaperOffset = 0.5f; 806 float mHorizontalWallpaperOffset = 0.0f; 807 float mVerticalWallpaperOffset = 0.5f; 808 long mLastWallpaperOffsetUpdateTime; 809 boolean mIsMovingFast; 810 boolean mOverrideHorizontalCatchupConstant; 811 float mHorizontalCatchupConstant = 0.35f; 812 float mVerticalCatchupConstant = 0.35f; 813 814 public WallpaperOffsetInterpolator() { 815 } 816 817 public void setOverrideHorizontalCatchupConstant(boolean override) { 818 mOverrideHorizontalCatchupConstant = override; 819 } 820 821 public void setHorizontalCatchupConstant(float f) { 822 mHorizontalCatchupConstant = f; 823 } 824 825 public void setVerticalCatchupConstant(float f) { 826 mVerticalCatchupConstant = f; 827 } 828 829 public boolean computeScrollOffset() { 830 if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 && 831 Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) { 832 mIsMovingFast = false; 833 return false; 834 } 835 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 836 boolean isLandscape = display.getWidth() > display.getHeight(); 837 838 long currentTime = System.currentTimeMillis(); 839 long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime; 840 timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate); 841 timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate); 842 843 float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset); 844 if (!mIsMovingFast && xdiff > 0.07) { 845 mIsMovingFast = true; 846 } 847 848 float fractionToCatchUpIn1MsHorizontal; 849 if (mOverrideHorizontalCatchupConstant) { 850 fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant; 851 } else if (mIsMovingFast) { 852 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f; 853 } else { 854 // slow 855 fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f; 856 } 857 float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant; 858 859 860 fractionToCatchUpIn1MsHorizontal /= 33f; 861 fractionToCatchUpIn1MsVertical /= 33f; 862 863 final float UPDATE_THRESHOLD = 0.00001f; 864 float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset; 865 float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset; 866 boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD && 867 Math.abs(vOffsetDelta) < UPDATE_THRESHOLD; 868 if (jumpToFinalValue) { 869 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 870 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 871 } else { 872 float percentToCatchUpVertical = 873 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical); 874 float percentToCatchUpHorizontal = 875 Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal); 876 mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta; 877 mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta; 878 } 879 880 mLastWallpaperOffsetUpdateTime = System.currentTimeMillis(); 881 return true; 882 } 883 884 public float getCurrX() { 885 return mHorizontalWallpaperOffset; 886 } 887 888 public float getFinalX() { 889 return mFinalHorizontalWallpaperOffset; 890 } 891 892 public float getCurrY() { 893 return mVerticalWallpaperOffset; 894 } 895 896 public float getFinalY() { 897 return mFinalVerticalWallpaperOffset; 898 } 899 900 public void setFinalX(float x) { 901 mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f)); 902 } 903 904 public void setFinalY(float y) { 905 mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f)); 906 } 907 908 public void jumpToFinal() { 909 mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset; 910 mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset; 911 } 912 } 913 914 @Override 915 public void computeScroll() { 916 super.computeScroll(); 917 if (mSyncWallpaperOffsetWithScroll) { 918 syncWallpaperOffsetWithScroll(); 919 } 920 } 921 922 void showOutlines() { 923 if (!mIsSmall && !mIsInUnshrinkAnimation) { 924 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 925 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 926 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 927 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 928 mChildrenOutlineFadeInAnimation.start(); 929 } 930 } 931 932 void hideOutlines() { 933 if (!mIsSmall && !mIsInUnshrinkAnimation) { 934 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 935 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 936 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 937 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 938 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 939 mChildrenOutlineFadeOutAnimation.start(); 940 } 941 } 942 943 public void showOutlinesTemporarily() { 944 if (!mIsPageMoving && !isTouchActive()) { 945 snapToPage(mCurrentPage); 946 } 947 } 948 949 public void setChildrenOutlineAlpha(float alpha) { 950 mChildrenOutlineAlpha = alpha; 951 for (int i = 0; i < getChildCount(); i++) { 952 CellLayout cl = (CellLayout) getChildAt(i); 953 cl.setBackgroundAlpha(alpha); 954 } 955 } 956 957 public float getChildrenOutlineAlpha() { 958 return mChildrenOutlineAlpha; 959 } 960 961 void disableBackground() { 962 mDrawBackground = false; 963 } 964 void enableBackground() { 965 mDrawBackground = true; 966 } 967 968 private void showBackgroundGradientForAllApps() { 969 showBackgroundGradient(); 970 mDrawCustomizeTrayBackground = false; 971 } 972 973 private void showBackgroundGradientForCustomizeTray() { 974 showBackgroundGradient(); 975 mDrawCustomizeTrayBackground = true; 976 } 977 978 private void showBackgroundGradient() { 979 if (mBackground == null) return; 980 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 981 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 982 mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f); 983 mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() { 984 public void onAnimationUpdate(ValueAnimator animation) { 985 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 986 } 987 }); 988 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 989 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 990 mBackgroundFadeInAnimation.start(); 991 } 992 993 private void hideBackgroundGradient() { 994 if (mBackground == null) return; 995 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 996 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 997 mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 0f); 998 mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { 999 public void onAnimationUpdate(ValueAnimator animation) { 1000 setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); 1001 } 1002 }); 1003 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 1004 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 1005 mBackgroundFadeOutAnimation.start(); 1006 } 1007 1008 public void setBackgroundAlpha(float alpha) { 1009 if (alpha != mBackgroundAlpha) { 1010 mBackgroundAlpha = alpha; 1011 invalidate(); 1012 } 1013 } 1014 1015 public float getBackgroundAlpha() { 1016 return mBackgroundAlpha; 1017 } 1018 1019 /** 1020 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 1021 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 1022 * as being larger. This method computes what offset the rotated view should be translated 1023 * in order to minimize this perceived gap. 1024 * @param degrees Angle of the view 1025 * @param width Width of the view 1026 * @param height Height of the view 1027 * @return Offset to be used in a View.setTranslationX() call 1028 */ 1029 private float getOffsetXForRotation(float degrees, int width, int height) { 1030 mMatrix.reset(); 1031 mCamera.save(); 1032 mCamera.rotateY(Math.abs(degrees)); 1033 mCamera.getMatrix(mMatrix); 1034 mCamera.restore(); 1035 1036 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 1037 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 1038 mTempFloat2[0] = width; 1039 mTempFloat2[1] = height; 1040 mMatrix.mapPoints(mTempFloat2); 1041 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 1042 } 1043 1044 float backgroundAlphaInterpolator(float r) { 1045 float pivotA = 0.1f; 1046 float pivotB = 0.4f; 1047 if (r < pivotA) { 1048 return 0; 1049 } else if (r > pivotB) { 1050 return 1.0f; 1051 } else { 1052 return (r - pivotA)/(pivotB - pivotA); 1053 } 1054 } 1055 1056 float overScrollBackgroundAlphaInterpolator(float r) { 1057 float threshold = 0.08f; 1058 1059 if (r > mOverScrollMaxBackgroundAlpha) { 1060 mOverScrollMaxBackgroundAlpha = r; 1061 } else if (r < mOverScrollMaxBackgroundAlpha) { 1062 r = mOverScrollMaxBackgroundAlpha; 1063 } 1064 1065 return Math.min(r / threshold, 1.0f); 1066 } 1067 1068 @Override 1069 protected void screenScrolled(int screenCenter) { 1070 final int halfScreenSize = getMeasuredWidth() / 2; 1071 1072 for (int i = 0; i < getChildCount(); i++) { 1073 CellLayout cl = (CellLayout) getChildAt(i); 1074 if (cl != null) { 1075 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 1076 int delta = screenCenter - (getChildOffset(i) - 1077 getRelativeChildOffset(i) + halfScreenSize); 1078 1079 float scrollProgress = delta / (totalDistance * 1.0f); 1080 scrollProgress = Math.min(scrollProgress, 1.0f); 1081 scrollProgress = Math.max(scrollProgress, -1.0f); 1082 1083 // If the current page (i) is being overscrolled, we use a different 1084 // set of rules for setting the background alpha multiplier. 1085 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 1086 i == getChildCount() -1 )) { 1087 cl.setBackgroundAlphaMultiplier( 1088 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 1089 mOverScrollPageIndex = i; 1090 } else if (mOverScrollPageIndex != i) { 1091 cl.setBackgroundAlphaMultiplier( 1092 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 1093 } 1094 1095 float rotation = WORKSPACE_ROTATION * scrollProgress; 1096 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1097 cl.setTranslationX(translationX); 1098 1099 cl.setRotationY(rotation); 1100 } 1101 } 1102 } 1103 1104 protected void onAttachedToWindow() { 1105 super.onAttachedToWindow(); 1106 mWindowToken = getWindowToken(); 1107 computeScroll(); 1108 mDragController.setWindowToken(mWindowToken); 1109 } 1110 1111 protected void onDetachedFromWindow() { 1112 mWindowToken = null; 1113 } 1114 1115 @Override 1116 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 1117 if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { 1118 mUpdateWallpaperOffsetImmediately = true; 1119 } 1120 super.onLayout(changed, left, top, right, bottom); 1121 1122 // if shrinkToBottom() is called on initialization, it has to be deferred 1123 // until after the first call to onLayout so that it has the correct width 1124 if (mWaitingToShrink) { 1125 // shrink can trigger a synchronous onLayout call, so we 1126 // post this to avoid a stack overflow / tangled onLayout calls 1127 post(new Runnable() { 1128 public void run() { 1129 shrink(mWaitingToShrinkState, false); 1130 mWaitingToShrink = false; 1131 } 1132 }); 1133 } 1134 1135 if (LauncherApplication.isInPlaceRotationEnabled()) { 1136 // When the device is rotated, the scroll position of the current screen 1137 // needs to be refreshed 1138 setCurrentPage(getCurrentPage()); 1139 } 1140 } 1141 1142 @Override 1143 protected void onDraw(Canvas canvas) { 1144 updateWallpaperOffsets(); 1145 1146 // Draw the background gradient if necessary 1147 if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { 1148 int alpha = (int) (mBackgroundAlpha * 255); 1149 if (mDrawCustomizeTrayBackground) { 1150 // Find out where to offset the gradient for the customization tray content 1151 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 1152 final Matrix m = mCustomizationDrawer.getMatrix(); 1153 mCustomizationDrawerTransformedPos[0] = 0.0f; 1154 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 1155 m.mapPoints(mCustomizationDrawerTransformedPos); 1156 1157 // Draw the bg glow behind the gradient 1158 mCustomizeTrayBackground.setAlpha(alpha); 1159 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1160 getMeasuredHeight()); 1161 mCustomizeTrayBackground.draw(canvas); 1162 1163 // Draw the bg gradient 1164 final int offset = (int) (mCustomizationDrawerPos[1] + 1165 mCustomizationDrawerTransformedPos[1]); 1166 mBackground.setAlpha(alpha); 1167 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 1168 offset + getMeasuredHeight()); 1169 mBackground.draw(canvas); 1170 } else { 1171 mBackground.setAlpha(alpha); 1172 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 1173 getMeasuredHeight()); 1174 mBackground.draw(canvas); 1175 } 1176 } 1177 super.onDraw(canvas); 1178 } 1179 1180 @Override 1181 protected void dispatchDraw(Canvas canvas) { 1182 if (mIsSmall || mIsInUnshrinkAnimation) { 1183 // Draw all the workspaces if we're small 1184 final int pageCount = getChildCount(); 1185 final long drawingTime = getDrawingTime(); 1186 for (int i = 0; i < pageCount; i++) { 1187 final View page = (View) getChildAt(i); 1188 if (page.getVisibility() == VISIBLE && page.getAlpha() != 0f) { 1189 drawChild(canvas, page, drawingTime); 1190 } 1191 } 1192 } else { 1193 super.dispatchDraw(canvas); 1194 1195 final int width = getWidth(); 1196 final int height = getHeight(); 1197 1198 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 1199 if (mInScrollArea && (height > width)) { 1200 final int pageHeight = getChildAt(0).getHeight(); 1201 1202 // This determines the height of the glowing edge: 90% of the page height 1203 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 1204 1205 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 1206 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 1207 1208 if (leftPage != null && leftPage.getIsDragOverlapping()) { 1209 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 1210 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 1211 d.draw(canvas); 1212 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 1213 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 1214 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 1215 d.draw(canvas); 1216 } 1217 } 1218 1219 if (mDropView != null) { 1220 // We are animating an item that was just dropped on the home screen. 1221 // Render its View in the current animation position. 1222 canvas.save(Canvas.MATRIX_SAVE_FLAG); 1223 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 1224 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 1225 canvas.translate(xPos, yPos); 1226 mDropView.draw(canvas); 1227 canvas.restore(); 1228 } 1229 } 1230 } 1231 1232 @Override 1233 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 1234 if (!mLauncher.isAllAppsVisible()) { 1235 final Folder openFolder = getOpenFolder(); 1236 if (openFolder != null) { 1237 return openFolder.requestFocus(direction, previouslyFocusedRect); 1238 } else { 1239 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 1240 } 1241 } 1242 return false; 1243 } 1244 1245 @Override 1246 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 1247 if (!mLauncher.isAllAppsVisible()) { 1248 final Folder openFolder = getOpenFolder(); 1249 if (openFolder != null) { 1250 openFolder.addFocusables(views, direction); 1251 } else { 1252 super.addFocusables(views, direction, focusableMode); 1253 } 1254 } 1255 } 1256 1257 @Override 1258 public boolean dispatchTouchEvent(MotionEvent ev) { 1259 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1260 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 1261 // ie when you click on a mini-screen, it zooms back to that screen) 1262 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 1263 return false; 1264 } 1265 } 1266 1267 return super.dispatchTouchEvent(ev); 1268 } 1269 1270 void enableChildrenCache(int fromPage, int toPage) { 1271 if (fromPage > toPage) { 1272 final int temp = fromPage; 1273 fromPage = toPage; 1274 toPage = temp; 1275 } 1276 1277 final int screenCount = getChildCount(); 1278 1279 fromPage = Math.max(fromPage, 0); 1280 toPage = Math.min(toPage, screenCount - 1); 1281 1282 for (int i = fromPage; i <= toPage; i++) { 1283 final CellLayout layout = (CellLayout) getChildAt(i); 1284 layout.setChildrenDrawnWithCacheEnabled(true); 1285 layout.setChildrenDrawingCacheEnabled(true); 1286 } 1287 } 1288 1289 void clearChildrenCache() { 1290 final int screenCount = getChildCount(); 1291 for (int i = 0; i < screenCount; i++) { 1292 final CellLayout layout = (CellLayout) getChildAt(i); 1293 layout.setChildrenDrawnWithCacheEnabled(false); 1294 } 1295 } 1296 1297 @Override 1298 public boolean onTouchEvent(MotionEvent ev) { 1299 AllAppsPagedView allApps = (AllAppsPagedView) 1300 mLauncher.findViewById(R.id.all_apps_paged_view); 1301 1302 if (mLauncher.isAllAppsVisible() && mShrinkState == ShrinkState.BOTTOM_HIDDEN 1303 && allApps != null) { 1304 if (ev.getAction() == MotionEvent.ACTION_UP && 1305 allApps.getTouchState() == TOUCH_STATE_REST) { 1306 1307 // Cancel any scrolling that is in progress. 1308 if (!mScroller.isFinished()) { 1309 mScroller.abortAnimation(); 1310 } 1311 setCurrentPage(mCurrentPage); 1312 1313 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 1314 mLauncher.showWorkspace(true); 1315 } 1316 allApps.onTouchEvent(ev); 1317 return true; 1318 } else { 1319 return allApps.onTouchEvent(ev); 1320 } 1321 } 1322 return super.onTouchEvent(ev); 1323 } 1324 1325 protected void enableChildrenLayers(boolean enable) { 1326 for (int i = 0; i < getPageCount(); i++) { 1327 ((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enable); 1328 } 1329 } 1330 @Override 1331 protected void pageBeginMoving() { 1332 enableChildrenLayers(true); 1333 super.pageBeginMoving(); 1334 } 1335 1336 @Override 1337 protected void pageEndMoving() { 1338 if (!mIsSmall && !mIsInUnshrinkAnimation) { 1339 enableChildrenLayers(false); 1340 } 1341 super.pageEndMoving(); 1342 } 1343 1344 @Override 1345 protected void onWallpaperTap(MotionEvent ev) { 1346 final int[] position = mTempCell; 1347 getLocationOnScreen(position); 1348 1349 int pointerIndex = ev.getActionIndex(); 1350 position[0] += (int) ev.getX(pointerIndex); 1351 position[1] += (int) ev.getY(pointerIndex); 1352 1353 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 1354 ev.getAction() == MotionEvent.ACTION_UP 1355 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 1356 position[0], position[1], 0, null); 1357 } 1358 1359 public boolean isSmall() { 1360 return mIsSmall; 1361 } 1362 1363 private float getYScaleForScreen(int screen) { 1364 int x = Math.abs(screen - 2); 1365 1366 // TODO: This should be generalized for use with arbitrary rotation angles. 1367 switch(x) { 1368 case 0: return EXTRA_SCALE_FACTOR_0; 1369 case 1: return EXTRA_SCALE_FACTOR_1; 1370 case 2: return EXTRA_SCALE_FACTOR_2; 1371 } 1372 return 1.0f; 1373 } 1374 1375 public void shrink(ShrinkState shrinkState) { 1376 shrink(shrinkState, true); 1377 } 1378 1379 private int getCustomizeDrawerHeight() { 1380 TabHost customizationDrawer = mLauncher.getCustomizationDrawer(); 1381 int height = customizationDrawer.getHeight(); 1382 TabWidget tabWidget = (TabWidget) 1383 customizationDrawer.findViewById(com.android.internal.R.id.tabs); 1384 if (tabWidget.getTabCount() > 0) { 1385 TextView tabText = (TextView) tabWidget.getChildTabViewAt(0); 1386 // subtract the empty space above the tab text 1387 height -= ((tabWidget.getHeight() - tabText.getLineHeight())) / 2; 1388 } 1389 return height; 1390 } 1391 1392 // we use this to shrink the workspace for the all apps view and the customize view 1393 public void shrink(ShrinkState shrinkState, boolean animated) { 1394 // In the launcher interaction model, we're never in the state where we're shrunken and 1395 // visible in the bottom of the screen, and then want to fade to being invisible. 1396 // After spring loaded mode ends, this method was getting called twice, the first time 1397 // with BOTTOM_VISIBLE (what we want) and a second time with BOTTOM_INVISIBLE (not 1398 // what we want). As a temporary solution, we just change the second call to BOTTOM_VISIBLE 1399 if (mIsSmall && mShrinkState == ShrinkState.BOTTOM_VISIBLE) { 1400 shrinkState = ShrinkState.BOTTOM_VISIBLE; 1401 } 1402 if (mFirstLayout) { 1403 // (mFirstLayout == "first layout has not happened yet") 1404 // if we get a call to shrink() as part of our initialization (for example, if 1405 // Launcher is started in All Apps mode) then we need to wait for a layout call 1406 // to get our width so we can layout the mini-screen views correctly 1407 mWaitingToShrink = true; 1408 mWaitingToShrinkState = shrinkState; 1409 return; 1410 } 1411 // Stop any scrolling, move to the current page right away 1412 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1413 if (!mIsDragInProcess) { 1414 updateWhichPagesAcceptDrops(shrinkState); 1415 } 1416 1417 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1418 if (currentPage == null) { 1419 Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage 1420 + " mNextPage " + mNextPage); 1421 return; 1422 } 1423 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1424 currentPage.setBackgroundAlpha(0.0f); 1425 } 1426 currentPage.setBackgroundAlphaMultiplier(1.0f); 1427 1428 mIsSmall = true; 1429 mShrinkState = shrinkState; 1430 1431 // we intercept and reject all touch events when we're small, so be sure to reset the state 1432 mTouchState = TOUCH_STATE_REST; 1433 mActivePointerId = INVALID_POINTER; 1434 1435 final Resources res = getResources(); 1436 final int screenWidth = getWidth(); 1437 final int screenHeight = getHeight(); 1438 1439 // Making the assumption that all pages have the same width as the 0th 1440 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1441 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1442 1443 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1444 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1445 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1446 1447 final int screenCount = getChildCount(); 1448 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1449 1450 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1451 float y = (isPortrait ? 1452 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1453 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1454 float finalAlpha = 1.0f; 1455 float extraShrinkFactor = 1.0f; 1456 1457 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1458 y = screenHeight - y - scaledPageHeight; 1459 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1460 // We shrink and disappear to nothing in the case of all apps 1461 // (which is when we shrink to the bottom) 1462 y = screenHeight - y - scaledPageHeight; 1463 finalAlpha = 0.0f; 1464 } else if (shrinkState == ShrinkState.MIDDLE) { 1465 y = screenHeight / 2 - scaledPageHeight / 2; 1466 finalAlpha = 1.0f; 1467 } else if (shrinkState == ShrinkState.TOP) { 1468 y = (screenHeight - getCustomizeDrawerHeight() - scaledPageHeight) / 2; 1469 } 1470 1471 int duration; 1472 if (shrinkState == ShrinkState.BOTTOM_HIDDEN || shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1473 duration = res.getInteger(R.integer.config_allAppsWorkspaceShrinkTime); 1474 } else { 1475 duration = res.getInteger(R.integer.config_customizeWorkspaceShrinkTime); 1476 } 1477 1478 // We animate all the screens to the centered position in workspace 1479 // At the same time, the screens become greyed/dimmed 1480 1481 // newX is initialized to the left-most position of the centered screens 1482 float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1483 1484 // We are going to scale about the center of the view, so we need to adjust the positions 1485 // of the views accordingly 1486 x -= (pageWidth - scaledPageWidth) / 2.0f; 1487 y -= (pageHeight - scaledPageHeight) / 2.0f; 1488 1489 if (mAnimator != null) { 1490 mAnimator.cancel(); 1491 } 1492 1493 mAnimator = new AnimatorSet(); 1494 1495 final float[] oldXs = new float[getChildCount()]; 1496 final float[] oldYs = new float[getChildCount()]; 1497 final float[] oldScaleXs = new float[getChildCount()]; 1498 final float[] oldScaleYs = new float[getChildCount()]; 1499 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1500 final float[] oldAlphas = new float[getChildCount()]; 1501 final float[] oldRotationYs = new float[getChildCount()]; 1502 final float[] newXs = new float[getChildCount()]; 1503 final float[] newYs = new float[getChildCount()]; 1504 final float[] newScaleXs = new float[getChildCount()]; 1505 final float[] newScaleYs = new float[getChildCount()]; 1506 final float[] newBackgroundAlphas = new float[getChildCount()]; 1507 final float[] newAlphas = new float[getChildCount()]; 1508 final float[] newRotationYs = new float[getChildCount()]; 1509 1510 for (int i = 0; i < screenCount; i++) { 1511 final CellLayout cl = (CellLayout) getChildAt(i); 1512 1513 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1514 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1515 float rotationScaleY = getYScaleForScreen(i); 1516 1517 oldAlphas[i] = cl.getAlpha(); 1518 newAlphas[i] = finalAlpha; 1519 if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) { 1520 // if the CellLayout will be visible during the animation, force building its 1521 // hardware layer immediately so we don't see a blip later in the animation 1522 cl.buildChildrenLayer(); 1523 } 1524 if (animated) { 1525 oldXs[i] = cl.getX(); 1526 oldYs[i] = cl.getY(); 1527 oldScaleXs[i] = cl.getScaleX(); 1528 oldScaleYs[i] = cl.getScaleY(); 1529 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1530 oldRotationYs[i] = cl.getRotationY(); 1531 newXs[i] = x; 1532 newYs[i] = y; 1533 newScaleXs[i] = SHRINK_FACTOR * rotationScaleX * extraShrinkFactor; 1534 newScaleYs[i] = SHRINK_FACTOR * rotationScaleY * extraShrinkFactor; 1535 newBackgroundAlphas[i] = finalAlpha; 1536 newRotationYs[i] = rotation; 1537 } else { 1538 cl.setX((int)x); 1539 cl.setY((int)y); 1540 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1541 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1542 cl.setBackgroundAlpha(finalAlpha); 1543 cl.setAlpha(finalAlpha); 1544 cl.setRotationY(rotation); 1545 mShrinkAnimationListener.onAnimationEnd(null); 1546 } 1547 // increment newX for the next screen 1548 x += scaledPageWidth + extraScaledSpacing; 1549 } 1550 1551 float wallpaperOffset = 0.5f; 1552 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1553 int wallpaperTravelHeight = (int) (display.getHeight() * 1554 wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight())); 1555 float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f; 1556 boolean isLandscape = display.getWidth() > display.getHeight(); 1557 1558 switch (shrinkState) { 1559 // animating in 1560 case TOP: 1561 // customize 1562 wallpaperOffset = 0.5f + offsetFromCenter; 1563 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.46f : 0.44f); 1564 break; 1565 case MIDDLE: 1566 case SPRING_LOADED: 1567 wallpaperOffset = 0.5f; 1568 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1569 break; 1570 case BOTTOM_HIDDEN: 1571 case BOTTOM_VISIBLE: 1572 // allapps 1573 wallpaperOffset = 0.5f - offsetFromCenter; 1574 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f); 1575 break; 1576 } 1577 1578 setLayoutScale(1.0f); 1579 if (animated) { 1580 mWallpaperOffset.setHorizontalCatchupConstant(0.46f); 1581 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1582 1583 mSyncWallpaperOffsetWithScroll = false; 1584 1585 ValueAnimator animWithInterpolator = 1586 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1587 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1588 1589 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1590 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1591 final float newHorizontalWallpaperOffset = 0.5f; 1592 final float newVerticalWallpaperOffset = wallpaperOffset; 1593 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1594 public void onAnimationUpdate(ValueAnimator animation) { 1595 final float b = (Float) animation.getAnimatedValue(); 1596 final float a = 1f - b; 1597 if (b == 0f) { 1598 // an optimization, and required for correct behavior. 1599 return; 1600 } 1601 fastInvalidate(); 1602 setHorizontalWallpaperOffset( 1603 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1604 setVerticalWallpaperOffset( 1605 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1606 for (int i = 0; i < screenCount; i++) { 1607 final CellLayout cl = (CellLayout) getChildAt(i); 1608 cl.fastInvalidate(); 1609 cl.setFastX(a * oldXs[i] + b * newXs[i]); 1610 cl.setFastY(a * oldYs[i] + b * newYs[i]); 1611 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1612 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1613 cl.setFastBackgroundAlpha( 1614 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1615 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1616 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1617 } 1618 } 1619 }); 1620 mAnimator.playTogether(animWithInterpolator); 1621 mAnimator.addListener(mShrinkAnimationListener); 1622 mAnimator.start(); 1623 } else { 1624 setVerticalWallpaperOffset(wallpaperOffset); 1625 setHorizontalWallpaperOffset(0.5f); 1626 updateWallpaperOffsetImmediately(); 1627 } 1628 setChildrenDrawnWithCacheEnabled(true); 1629 1630 if (shrinkState == ShrinkState.TOP) { 1631 showBackgroundGradientForCustomizeTray(); 1632 } else { 1633 showBackgroundGradientForAllApps(); 1634 } 1635 } 1636 1637 /* 1638 * This interpolator emulates the rate at which the perceived scale of an object changes 1639 * as its distance from a camera increases. When this interpolator is applied to a scale 1640 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1641 * from the camera. 1642 */ 1643 static class ZInterpolator implements TimeInterpolator { 1644 private float focalLength; 1645 1646 public ZInterpolator(float foc) { 1647 focalLength = foc; 1648 } 1649 1650 public float getInterpolation(float input) { 1651 return (1.0f - focalLength / (focalLength + input)) / 1652 (1.0f - focalLength / (focalLength + 1.0f)); 1653 } 1654 } 1655 1656 /* 1657 * The exact reverse of ZInterpolator. 1658 */ 1659 static class InverseZInterpolator implements TimeInterpolator { 1660 private ZInterpolator zInterpolator; 1661 public InverseZInterpolator(float foc) { 1662 zInterpolator = new ZInterpolator(foc); 1663 } 1664 public float getInterpolation(float input) { 1665 return 1 - zInterpolator.getInterpolation(1 - input); 1666 } 1667 } 1668 1669 /* 1670 * ZInterpolator compounded with an ease-out. 1671 */ 1672 static class ZoomOutInterpolator implements TimeInterpolator { 1673 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1674 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f); 1675 1676 public float getInterpolation(float input) { 1677 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1678 } 1679 } 1680 1681 /* 1682 * InvereZInterpolator compounded with an ease-out. 1683 */ 1684 static class ZoomInInterpolator implements TimeInterpolator { 1685 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1686 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1687 1688 public float getInterpolation(float input) { 1689 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1690 } 1691 } 1692 1693 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1694 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1695 1696 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1697 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1698 } 1699 1700 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1701 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1702 } 1703 1704 private void updateWhichPagesAcceptDropsHelper( 1705 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1706 final int screenCount = getChildCount(); 1707 for (int i = 0; i < screenCount; i++) { 1708 CellLayout cl = (CellLayout) getChildAt(i); 1709 cl.setIsDragOccuring(isDragHappening); 1710 switch (state) { 1711 case TOP: 1712 cl.setIsDefaultDropTarget(i == mCurrentPage); 1713 case BOTTOM_HIDDEN: 1714 case BOTTOM_VISIBLE: 1715 case SPRING_LOADED: 1716 if (state != ShrinkState.TOP) { 1717 cl.setIsDefaultDropTarget(false); 1718 } 1719 if (!isDragHappening) { 1720 // even if a drag isn't happening, we don't want to show a screen as 1721 // accepting drops if it doesn't have at least one free cell 1722 spanX = 1; 1723 spanY = 1; 1724 } 1725 // the page accepts drops if we can find at least one empty spot 1726 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1727 break; 1728 default: 1729 throw new RuntimeException("Unhandled ShrinkState " + state); 1730 } 1731 } 1732 } 1733 1734 /* 1735 * 1736 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1737 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1738 * 1739 * These methods mark the appropriate pages as accepting drops (which alters their visual 1740 * appearance). 1741 * 1742 */ 1743 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1744 mIsDragInProcess = true; 1745 1746 final Canvas canvas = new Canvas(); 1747 1748 // We need to add extra padding to the bitmap to make room for the glow effect 1749 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1750 1751 CellLayout cl = (CellLayout) getChildAt(0); 1752 int[] desiredSize = cl.cellSpansToSize(spanX, spanY); 1753 // The outline is used to visualize where the item will land if dropped 1754 mDragOutline = createDragOutline(b, canvas, bitmapPadding, desiredSize[0], desiredSize[1]); 1755 1756 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1757 } 1758 1759 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1760 // never dragged over 1761 public void onDragStopped(boolean success) { 1762 mLastDragView = null; 1763 // In the success case, DragController has already called onDragExit() 1764 if (!success) { 1765 doDragExit(); 1766 } 1767 mIsDragInProcess = false; 1768 updateWhichPagesAcceptDrops(mShrinkState); 1769 } 1770 1771 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1772 public void unshrink(CellLayout clThatWasClicked) { 1773 unshrink(clThatWasClicked, false); 1774 } 1775 1776 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1777 int newCurrentPage = indexOfChild(clThatWasClicked); 1778 if (mIsSmall) { 1779 if (springLoaded) { 1780 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1781 } 1782 scrollToNewPageWithoutMovingPages(newCurrentPage); 1783 unshrink(true, springLoaded); 1784 } 1785 } 1786 1787 1788 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1789 mShrinkState = ShrinkState.SPRING_LOADED; 1790 unshrink(clThatWasClicked, true); 1791 mDragTargetLayout.onDragEnter(); 1792 } 1793 1794 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1795 shrink(shrinkState); 1796 if (mDragTargetLayout != null) { 1797 mDragTargetLayout.onDragExit(); 1798 } 1799 } 1800 1801 public void exitWidgetResizeMode() { 1802 final CellLayout currentLayout = (CellLayout) getChildAt(getCurrentPage()); 1803 currentLayout.getChildrenLayout().clearAllResizeFrames(); 1804 } 1805 1806 void unshrink(boolean animated) { 1807 unshrink(animated, false); 1808 } 1809 1810 void unshrink(boolean animated, boolean springLoaded) { 1811 mWaitingToShrink = false; 1812 if (mIsSmall) { 1813 float finalScaleFactor = 1.0f; 1814 float finalBackgroundAlpha = 0.0f; 1815 if (springLoaded) { 1816 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1817 finalBackgroundAlpha = 1.0f; 1818 } else { 1819 mIsSmall = false; 1820 } 1821 if (mAnimator != null) { 1822 mAnimator.cancel(); 1823 } 1824 1825 mAnimator = new AnimatorSet(); 1826 final int screenCount = getChildCount(); 1827 1828 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1829 1830 final float[] oldTranslationXs = new float[getChildCount()]; 1831 final float[] oldTranslationYs = new float[getChildCount()]; 1832 final float[] oldScaleXs = new float[getChildCount()]; 1833 final float[] oldScaleYs = new float[getChildCount()]; 1834 final float[] oldBackgroundAlphas = new float[getChildCount()]; 1835 final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()]; 1836 final float[] oldAlphas = new float[getChildCount()]; 1837 final float[] oldRotationYs = new float[getChildCount()]; 1838 final float[] newTranslationXs = new float[getChildCount()]; 1839 final float[] newTranslationYs = new float[getChildCount()]; 1840 final float[] newScaleXs = new float[getChildCount()]; 1841 final float[] newScaleYs = new float[getChildCount()]; 1842 final float[] newBackgroundAlphas = new float[getChildCount()]; 1843 final float[] newBackgroundAlphaMultipliers = new float[getChildCount()]; 1844 final float[] newAlphas = new float[getChildCount()]; 1845 final float[] newRotationYs = new float[getChildCount()]; 1846 1847 for (int i = 0; i < screenCount; i++) { 1848 final CellLayout cl = (CellLayout)getChildAt(i); 1849 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1850 float finalAlphaMultiplierValue = 1851 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1852 0.0f : 1.0f; 1853 float rotation = 0.0f; 1854 1855 if (i < mCurrentPage) { 1856 rotation = WORKSPACE_ROTATION; 1857 } else if (i > mCurrentPage) { 1858 rotation = -WORKSPACE_ROTATION; 1859 } 1860 1861 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1862 1863 oldAlphas[i] = cl.getAlpha(); 1864 newAlphas[i] = finalAlphaValue; 1865 if (animated) { 1866 oldTranslationXs[i] = cl.getTranslationX(); 1867 oldTranslationYs[i] = cl.getTranslationY(); 1868 oldScaleXs[i] = cl.getScaleX(); 1869 oldScaleYs[i] = cl.getScaleY(); 1870 oldBackgroundAlphas[i] = cl.getBackgroundAlpha(); 1871 oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier(); 1872 oldRotationYs[i] = cl.getRotationY(); 1873 1874 newTranslationXs[i] = translation; 1875 newTranslationYs[i] = 0f; 1876 newScaleXs[i] = finalScaleFactor; 1877 newScaleYs[i] = finalScaleFactor; 1878 newBackgroundAlphas[i] = finalBackgroundAlpha; 1879 newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue; 1880 newRotationYs[i] = rotation; 1881 } else { 1882 cl.setTranslationX(translation); 1883 cl.setTranslationY(0.0f); 1884 cl.setScaleX(finalScaleFactor); 1885 cl.setScaleY(finalScaleFactor); 1886 cl.setBackgroundAlpha(0.0f); 1887 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1888 cl.setAlpha(finalAlphaValue); 1889 cl.setRotationY(rotation); 1890 mUnshrinkAnimationListener.onAnimationEnd(null); 1891 } 1892 } 1893 Display display = mLauncher.getWindowManager().getDefaultDisplay(); 1894 boolean isLandscape = display.getWidth() > display.getHeight(); 1895 switch (mShrinkState) { 1896 // animating out 1897 case TOP: 1898 // customize 1899 if (animated) { 1900 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1901 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.62f); 1902 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1903 } 1904 break; 1905 case MIDDLE: 1906 case SPRING_LOADED: 1907 if (animated) { 1908 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1909 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f); 1910 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1911 } 1912 break; 1913 case BOTTOM_HIDDEN: 1914 case BOTTOM_VISIBLE: 1915 // all apps 1916 if (animated) { 1917 mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1918 mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f); 1919 mWallpaperOffset.setOverrideHorizontalCatchupConstant(true); 1920 } 1921 break; 1922 } 1923 if (animated) { 1924 ValueAnimator animWithInterpolator = 1925 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1926 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1927 1928 final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset(); 1929 final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset(); 1930 final float newHorizontalWallpaperOffset = wallpaperOffsetForCurrentScroll(); 1931 final float newVerticalWallpaperOffset = 0.5f; 1932 animWithInterpolator.addUpdateListener(new AnimatorUpdateListener() { 1933 public void onAnimationUpdate(ValueAnimator animation) { 1934 final float b = (Float) animation.getAnimatedValue(); 1935 final float a = 1f - b; 1936 if (b == 0f) { 1937 // an optimization, but not required 1938 return; 1939 } 1940 fastInvalidate(); 1941 setHorizontalWallpaperOffset( 1942 a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset); 1943 setVerticalWallpaperOffset( 1944 a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset); 1945 for (int i = 0; i < screenCount; i++) { 1946 final CellLayout cl = (CellLayout) getChildAt(i); 1947 cl.fastInvalidate(); 1948 cl.setFastTranslationX( 1949 a * oldTranslationXs[i] + b * newTranslationXs[i]); 1950 cl.setFastTranslationY( 1951 a * oldTranslationYs[i] + b * newTranslationYs[i]); 1952 cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]); 1953 cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]); 1954 cl.setFastBackgroundAlpha( 1955 a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]); 1956 cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] + 1957 b * newBackgroundAlphaMultipliers[i]); 1958 cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]); 1959 } 1960 } 1961 }); 1962 1963 ValueAnimator rotationAnim = 1964 ValueAnimator.ofFloat(0f, 1f).setDuration(duration); 1965 rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f)); 1966 rotationAnim.addUpdateListener(new AnimatorUpdateListener() { 1967 public void onAnimationUpdate(ValueAnimator animation) { 1968 // don't invalidate workspace because we did it above 1969 final float b = (Float) animation.getAnimatedValue(); 1970 final float a = 1f - b; 1971 if (b == 0f) { 1972 // an optimization, but not required 1973 return; 1974 } 1975 for (int i = 0; i < screenCount; i++) { 1976 final CellLayout cl = (CellLayout) getChildAt(i); 1977 cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]); 1978 } 1979 } 1980 }); 1981 1982 mAnimator.playTogether(animWithInterpolator, rotationAnim); 1983 // If we call this when we're not animated, onAnimationEnd is never called on 1984 // the listener; make sure we only use the listener when we're actually animating 1985 mAnimator.addListener(mUnshrinkAnimationListener); 1986 mAnimator.start(); 1987 } else { 1988 setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll()); 1989 setVerticalWallpaperOffset(0.5f); 1990 updateWallpaperOffsetImmediately(); 1991 } 1992 } 1993 1994 if (!springLoaded) { 1995 hideBackgroundGradient(); 1996 } 1997 } 1998 1999 /** 2000 * Draw the View v into the given Canvas. 2001 * 2002 * @param v the view to draw 2003 * @param destCanvas the canvas to draw on 2004 * @param padding the horizontal and vertical padding to use when drawing 2005 */ 2006 private void drawDragView(View v, Canvas destCanvas, int padding) { 2007 final Rect clipRect = mTempRect; 2008 v.getDrawingRect(clipRect); 2009 2010 // For a TextView, adjust the clip rect so that we don't include the text label 2011 if (v instanceof BubbleTextView) { 2012 final BubbleTextView tv = (BubbleTextView) v; 2013 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 2014 tv.getLayout().getLineTop(0); 2015 } else if (v instanceof TextView) { 2016 final TextView tv = (TextView) v; 2017 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 2018 tv.getLayout().getLineTop(0); 2019 } 2020 2021 // Draw the View into the bitmap. 2022 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 2023 // they set scrollX and scrollY to large values to achieve centered text 2024 2025 destCanvas.save(); 2026 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 2027 destCanvas.clipRect(clipRect, Op.REPLACE); 2028 v.draw(destCanvas); 2029 destCanvas.restore(); 2030 } 2031 2032 /** 2033 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2034 * Responsibility for the bitmap is transferred to the caller. 2035 */ 2036 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 2037 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2038 final Bitmap b = Bitmap.createBitmap( 2039 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 2040 2041 canvas.setBitmap(b); 2042 drawDragView(v, canvas, padding); 2043 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2044 return b; 2045 } 2046 2047 /** 2048 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 2049 * Responsibility for the bitmap is transferred to the caller. 2050 */ 2051 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) { 2052 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2053 final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 2054 canvas.setBitmap(b); 2055 2056 Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); 2057 float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), 2058 (h - padding) / (float) orig.getHeight()); 2059 int scaledWidth = (int) (scaleFactor * orig.getWidth()); 2060 int scaledHeight = (int) (scaleFactor * orig.getHeight()); 2061 Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); 2062 2063 // center the image 2064 dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); 2065 2066 Paint p = new Paint(); 2067 p.setFilterBitmap(true); 2068 canvas.drawBitmap(orig, src, dst, p); 2069 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2070 2071 return b; 2072 } 2073 2074 /** 2075 * Creates a drag outline to represent a drop (that we don't have the actual information for 2076 * yet). May be changed in the future to alter the drop outline slightly depending on the 2077 * clip description mime data. 2078 */ 2079 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 2080 Resources r = getResources(); 2081 final int outlineColor = r.getColor(R.color.drag_outline_color); 2082 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 2083 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 2084 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 2085 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 2086 final Bitmap b = Bitmap.createBitmap( 2087 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 2088 2089 canvas.setBitmap(b); 2090 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 2091 rectRadius, rectRadius, mExternalDragOutlinePaint); 2092 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 2093 return b; 2094 } 2095 2096 /** 2097 * Returns a new bitmap to show when the given View is being dragged around. 2098 * Responsibility for the bitmap is transferred to the caller. 2099 */ 2100 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 2101 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 2102 final Bitmap b = Bitmap.createBitmap( 2103 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 2104 2105 canvas.setBitmap(b); 2106 canvas.drawBitmap(mDragOutline, 0, 0, null); 2107 drawDragView(v, canvas, padding); 2108 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 2109 2110 return b; 2111 } 2112 2113 void startDrag(CellLayout.CellInfo cellInfo) { 2114 View child = cellInfo.cell; 2115 2116 // Make sure the drag was started by a long press as opposed to a long click. 2117 if (!child.isInTouchMode()) { 2118 return; 2119 } 2120 2121 mDragInfo = cellInfo; 2122 2123 CellLayout current = (CellLayout) getChildAt(cellInfo.screen); 2124 current.onDragChild(child); 2125 2126 child.clearFocus(); 2127 child.setPressed(false); 2128 2129 final Canvas canvas = new Canvas(); 2130 2131 // We need to add extra padding to the bitmap to make room for the glow effect 2132 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2133 2134 // The outline is used to visualize where the item will land if dropped 2135 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 2136 2137 // The drag bitmap follows the touch point around on the screen 2138 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 2139 2140 final int bmpWidth = b.getWidth(); 2141 final int bmpHeight = b.getHeight(); 2142 child.getLocationOnScreen(mTempXY); 2143 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 2144 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 2145 mLauncher.lockScreenOrientation(); 2146 mDragController.startDrag( 2147 b, screenX, screenY, this, child.getTag(), DragController.DRAG_ACTION_MOVE); 2148 b.recycle(); 2149 } 2150 2151 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 2152 boolean insertAtFirst, int intersectX, int intersectY) { 2153 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 2154 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 2155 2156 final int[] cellXY = new int[2]; 2157 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 2158 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 2159 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2160 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2161 cellXY[0], cellXY[1]); 2162 } 2163 2164 private void setPositionForDropAnimation( 2165 View dragView, int dragViewX, int dragViewY, View parent, View child) { 2166 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2167 2168 // Based on the position of the drag view, find the top left of the original view 2169 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 2170 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 2171 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 2172 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 2173 2174 // Set its old pos (in the new parent's coordinates); it will be animated 2175 // in animateViewIntoPosition after the next layout pass 2176 lp.oldX = viewX - (parent.getLeft() - mScrollX); 2177 lp.oldY = viewY - (parent.getTop() - mScrollY); 2178 } 2179 2180 /* 2181 * We should be careful that this method cannot result in any synchronous requestLayout() 2182 * calls, as it is called from onLayout(). 2183 */ 2184 public void animateViewIntoPosition(final View view) { 2185 final CellLayout parent = (CellLayout) view.getParent().getParent(); 2186 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2187 2188 // Convert the animation params to be relative to the Workspace, not the CellLayout 2189 final int fromX = lp.oldX + parent.getLeft(); 2190 final int fromY = lp.oldY + parent.getTop(); 2191 2192 final int dx = lp.x - lp.oldX; 2193 final int dy = lp.y - lp.oldY; 2194 2195 // Calculate the duration of the animation based on the object's distance 2196 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 2197 final Resources res = getResources(); 2198 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 2199 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 2200 if (dist < maxDist) { 2201 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 2202 } 2203 2204 if (mDropAnim != null) { 2205 mDropAnim.end(); 2206 } 2207 mDropAnim = new ValueAnimator(); 2208 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 2209 2210 // The view is invisible during the animation; we render it manually. 2211 mDropAnim.addListener(new AnimatorListenerAdapter() { 2212 public void onAnimationStart(Animator animation) { 2213 // Set this here so that we don't render it until the animation begins 2214 mDropView = view; 2215 } 2216 2217 public void onAnimationEnd(Animator animation) { 2218 if (mDropView != null) { 2219 mDropView.setVisibility(View.VISIBLE); 2220 mDropView = null; 2221 } 2222 } 2223 }); 2224 2225 mDropAnim.setDuration(duration); 2226 mDropAnim.setFloatValues(0.0f, 1.0f); 2227 mDropAnim.removeAllUpdateListeners(); 2228 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 2229 public void onAnimationUpdate(ValueAnimator animation) { 2230 final float percent = (Float) animation.getAnimatedValue(); 2231 // Invalidate the old position 2232 invalidate(mDropViewPos[0], mDropViewPos[1], 2233 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2234 2235 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 2236 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 2237 invalidate(mDropViewPos[0], mDropViewPos[1], 2238 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 2239 } 2240 }); 2241 2242 mDropAnim.start(); 2243 } 2244 2245 /** 2246 * {@inheritDoc} 2247 */ 2248 public boolean acceptDrop(DragSource source, int x, int y, 2249 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2250 2251 // If it's an external drop (e.g. from All Apps), check if it should be accepted 2252 if (source != this) { 2253 // Don't accept the drop if we're not over a screen at time of drop 2254 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 2255 return false; 2256 } 2257 2258 final CellLayout.CellInfo dragCellInfo = mDragInfo; 2259 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 2260 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 2261 2262 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 2263 2264 // Don't accept the drop if there's no room for the item 2265 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 2266 mLauncher.showOutOfSpaceMessage(); 2267 return false; 2268 } 2269 } 2270 return true; 2271 } 2272 2273 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 2274 DragView dragView, Object dragInfo) { 2275 boolean largeOrSpringLoaded = !mIsSmall || mWasSpringLoadedOnDragExit; 2276 int originX = largeOrSpringLoaded ? x - xOffset : x - xOffset + dragView.getWidth() / 2; 2277 int originY = largeOrSpringLoaded ? y - yOffset : y - yOffset + dragView.getHeight() / 2; 2278 2279 if (mIsSmall || mIsInUnshrinkAnimation) { 2280 // get originX and originY in the local coordinate system of the screen 2281 mTempOriginXY[0] = originX; 2282 mTempOriginXY[1] = originY; 2283 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 2284 originX = (int)mTempOriginXY[0]; 2285 originY = (int)mTempOriginXY[1]; 2286 if (!largeOrSpringLoaded) { 2287 originX -= mDragTargetLayout.getCellWidth() / 2; 2288 originY -= mDragTargetLayout.getCellHeight() / 2; 2289 } 2290 } 2291 2292 // When you are in customization mode and drag to a particular screen, make that the 2293 // new current/default screen, so any subsequent taps add items to that screen 2294 if (!mLauncher.isAllAppsVisible()) { 2295 int dragTargetIndex = indexOfChild(mDragTargetLayout); 2296 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 2297 scrollToNewPageWithoutMovingPages(dragTargetIndex); 2298 } 2299 } 2300 2301 if (source != this) { 2302 final int[] touchXY = new int[] { originX, originY }; 2303 if ((mIsSmall || mIsInUnshrinkAnimation) && !mLauncher.isAllAppsVisible()) { 2304 // When the workspace is shrunk and the drop comes from customize, don't actually 2305 // add the item to the screen -- customize will do this itself 2306 ((ItemInfo) dragInfo).dropPos = touchXY; 2307 return; 2308 } 2309 onDropExternal(touchXY, dragInfo, mDragTargetLayout, false); 2310 } else if (mDragInfo != null) { 2311 final View cell = mDragInfo.cell; 2312 CellLayout dropTargetLayout = mDragTargetLayout; 2313 2314 // Handle the case where the user drops when in the scroll area. 2315 // This is treated as a drop on the adjacent page. 2316 if (dropTargetLayout == null && mInScrollArea) { 2317 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 2318 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 2319 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 2320 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 2321 } 2322 } 2323 2324 if (dropTargetLayout != null) { 2325 // Move internally 2326 mTargetCell = findNearestVacantArea(originX, originY, 2327 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 2328 mTargetCell); 2329 2330 final int screen = (mTargetCell == null) ? 2331 mDragInfo.screen : indexOfChild(dropTargetLayout); 2332 2333 if (screen != mCurrentPage) { 2334 snapToPage(screen); 2335 } 2336 2337 if (mTargetCell != null) { 2338 if (screen != mDragInfo.screen) { 2339 // Reparent the view 2340 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 2341 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 2342 mDragInfo.spanX, mDragInfo.spanY); 2343 } 2344 2345 // update the item's position after drop 2346 final ItemInfo info = (ItemInfo) cell.getTag(); 2347 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 2348 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 2349 lp.cellX = mTargetCell[0]; 2350 lp.cellY = mTargetCell[1]; 2351 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 2352 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 2353 2354 if (cell instanceof LauncherAppWidgetHostView) { 2355 final CellLayoutChildren children = dropTargetLayout.getChildrenLayout(); 2356 final CellLayout cellLayout = dropTargetLayout; 2357 // We post this call so that the widget has a chance to be placed 2358 // in its final location 2359 2360 final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; 2361 AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); 2362 if (pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { 2363 post(new Runnable() { 2364 public void run() { 2365 children.addResizeFrame(info, hostView, 2366 cellLayout); 2367 } 2368 }); 2369 } 2370 } 2371 2372 LauncherModel.moveItemInDatabase(mLauncher, info, 2373 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2374 lp.cellX, lp.cellY); 2375 } 2376 } 2377 2378 final CellLayout parent = (CellLayout) cell.getParent().getParent(); 2379 2380 // Prepare it to be animated into its new position 2381 // This must be called after the view has been re-parented 2382 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 2383 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2384 parent.onDropChild(cell, animateDrop); 2385 } 2386 } 2387 2388 public void onDragEnter(DragSource source, int x, int y, int xOffset, 2389 int yOffset, DragView dragView, Object dragInfo) { 2390 mDragTargetLayout = null; // Reset the drag state 2391 2392 if (!mIsSmall) { 2393 mDragTargetLayout = getCurrentDropLayout(); 2394 mDragTargetLayout.onDragEnter(); 2395 showOutlines(); 2396 } 2397 } 2398 2399 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 2400 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 2401 2402 if (mIsSmall || mIsInUnshrinkAnimation) { 2403 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 2404 return null; 2405 } 2406 // We may need to delegate the drag to a child view. If a 1x1 item 2407 // would land in a cell occupied by a DragTarget (e.g. a Folder), 2408 // then drag events should be handled by that child. 2409 2410 ItemInfo item = (ItemInfo) dragInfo; 2411 CellLayout currentLayout = getCurrentDropLayout(); 2412 2413 int dragPointX, dragPointY; 2414 if (item.spanX == 1 && item.spanY == 1) { 2415 // For a 1x1, calculate the drop cell exactly as in onDragOver 2416 dragPointX = x - xOffset; 2417 dragPointY = y - yOffset; 2418 } else { 2419 // Otherwise, use the exact drag coordinates 2420 dragPointX = x; 2421 dragPointY = y; 2422 } 2423 dragPointX += mScrollX - currentLayout.getLeft(); 2424 dragPointY += mScrollY - currentLayout.getTop(); 2425 2426 // If we are dragging over a cell that contains a DropTarget that will 2427 // accept the drop, delegate to that DropTarget. 2428 final int[] cellXY = mTempCell; 2429 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 2430 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 2431 if (child instanceof DropTarget) { 2432 DropTarget target = (DropTarget)child; 2433 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 2434 return target; 2435 } 2436 } 2437 return null; 2438 } 2439 2440 /** 2441 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 2442 * in the returned structure related to the widgets that match the drop (or a null list if it is 2443 * a shortcut drop). If the drop is not accepted then a null structure is returned. 2444 */ 2445 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 2446 final LauncherModel model = mLauncher.getModel(); 2447 final ClipDescription desc = event.getClipDescription(); 2448 final int mimeTypeCount = desc.getMimeTypeCount(); 2449 for (int i = 0; i < mimeTypeCount; ++i) { 2450 final String mimeType = desc.getMimeType(i); 2451 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 2452 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 2453 } else { 2454 final List<WidgetMimeTypeHandlerData> widgets = 2455 model.resolveWidgetsForMimeType(mContext, mimeType); 2456 if (widgets.size() > 0) { 2457 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 2458 } 2459 } 2460 } 2461 return null; 2462 } 2463 2464 /** 2465 * Global drag and drop handler 2466 */ 2467 @Override 2468 public boolean onDragEvent(DragEvent event) { 2469 final ClipDescription desc = event.getClipDescription(); 2470 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 2471 final int[] pos = new int[2]; 2472 layout.getLocationOnScreen(pos); 2473 // We need to offset the drag coordinates to layout coordinate space 2474 final int x = (int) event.getX() - pos[0]; 2475 final int y = (int) event.getY() - pos[1]; 2476 2477 switch (event.getAction()) { 2478 case DragEvent.ACTION_DRAG_STARTED: { 2479 // Validate this drag 2480 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2481 if (test != null) { 2482 boolean isShortcut = (test.second == null); 2483 if (isShortcut) { 2484 // Check if we have enough space on this screen to add a new shortcut 2485 if (!layout.findCellForSpan(pos, 1, 1)) { 2486 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 2487 Toast.LENGTH_SHORT).show(); 2488 return false; 2489 } 2490 } 2491 } else { 2492 // Show error message if we couldn't accept any of the items 2493 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 2494 Toast.LENGTH_SHORT).show(); 2495 return false; 2496 } 2497 2498 // Create the drag outline 2499 // We need to add extra padding to the bitmap to make room for the glow effect 2500 final Canvas canvas = new Canvas(); 2501 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 2502 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 2503 2504 // Show the current page outlines to indicate that we can accept this drop 2505 showOutlines(); 2506 layout.setIsDragOccuring(true); 2507 layout.onDragEnter(); 2508 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2509 2510 return true; 2511 } 2512 case DragEvent.ACTION_DRAG_LOCATION: 2513 // Visualize the drop location 2514 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 2515 return true; 2516 case DragEvent.ACTION_DROP: { 2517 // Try and add any shortcuts 2518 final LauncherModel model = mLauncher.getModel(); 2519 final ClipData data = event.getClipData(); 2520 2521 // We assume that the mime types are ordered in descending importance of 2522 // representation. So we enumerate the list of mime types and alert the 2523 // user if any widgets can handle the drop. Only the most preferred 2524 // representation will be handled. 2525 pos[0] = x; 2526 pos[1] = y; 2527 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 2528 if (test != null) { 2529 final int index = test.first; 2530 final List<WidgetMimeTypeHandlerData> widgets = test.second; 2531 final boolean isShortcut = (widgets == null); 2532 final String mimeType = desc.getMimeType(index); 2533 if (isShortcut) { 2534 final Intent intent = data.getItemAt(index).getIntent(); 2535 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 2536 onDropExternal(new int[] { x, y }, info, layout, false); 2537 } else { 2538 if (widgets.size() == 1) { 2539 // If there is only one item, then go ahead and add and configure 2540 // that widget 2541 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 2542 final PendingAddWidgetInfo createInfo = 2543 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 2544 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 2545 } else { 2546 // Show the widget picker dialog if there is more than one widget 2547 // that can handle this data type 2548 final InstallWidgetReceiver.WidgetListAdapter adapter = 2549 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 2550 data, widgets, layout, mCurrentPage, pos); 2551 final AlertDialog.Builder builder = 2552 new AlertDialog.Builder(mContext); 2553 builder.setAdapter(adapter, adapter); 2554 builder.setCancelable(true); 2555 builder.setTitle(mContext.getString( 2556 R.string.external_drop_widget_pick_title)); 2557 builder.setIcon(R.drawable.ic_no_applications); 2558 builder.show(); 2559 } 2560 } 2561 } 2562 return true; 2563 } 2564 case DragEvent.ACTION_DRAG_ENDED: 2565 // Hide the page outlines after the drop 2566 layout.setIsDragOccuring(false); 2567 layout.onDragExit(); 2568 hideOutlines(); 2569 return true; 2570 } 2571 return super.onDragEvent(event); 2572 } 2573 2574 /* 2575 * 2576 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2577 * coordinate space. The argument xy is modified with the return result. 2578 * 2579 */ 2580 void mapPointFromSelfToChild(View v, float[] xy) { 2581 mapPointFromSelfToChild(v, xy, null); 2582 } 2583 2584 /* 2585 * 2586 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 2587 * coordinate space. The argument xy is modified with the return result. 2588 * 2589 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 2590 * computing it itself; we use this to avoid redundant matrix inversions in 2591 * findMatchingPageForDragOver 2592 * 2593 */ 2594 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 2595 if (cachedInverseMatrix == null) { 2596 v.getMatrix().invert(mTempInverseMatrix); 2597 cachedInverseMatrix = mTempInverseMatrix; 2598 } 2599 xy[0] = xy[0] + mScrollX - v.getLeft(); 2600 xy[1] = xy[1] + mScrollY - v.getTop(); 2601 cachedInverseMatrix.mapPoints(xy); 2602 } 2603 2604 /* 2605 * 2606 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 2607 * the parent View's coordinate space. The argument xy is modified with the return result. 2608 * 2609 */ 2610 void mapPointFromChildToSelf(View v, float[] xy) { 2611 v.getMatrix().mapPoints(xy); 2612 xy[0] -= (mScrollX - v.getLeft()); 2613 xy[1] -= (mScrollY - v.getTop()); 2614 } 2615 2616 static private float squaredDistance(float[] point1, float[] point2) { 2617 float distanceX = point1[0] - point2[0]; 2618 float distanceY = point2[1] - point2[1]; 2619 return distanceX * distanceX + distanceY * distanceY; 2620 } 2621 2622 /* 2623 * 2624 * Returns true if the passed CellLayout cl overlaps with dragView 2625 * 2626 */ 2627 boolean overlaps(CellLayout cl, DragView dragView, 2628 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 2629 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 2630 final float[] draggedItemTopLeft = mTempDragCoordinates; 2631 draggedItemTopLeft[0] = dragViewX; 2632 draggedItemTopLeft[1] = dragViewY; 2633 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 2634 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth(); 2635 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight(); 2636 2637 // Transform the dragged item's top left coordinates 2638 // to the CellLayout's local coordinates 2639 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 2640 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 2641 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 2642 2643 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 2644 // Transform the dragged item's bottom right coordinates 2645 // to the CellLayout's local coordinates 2646 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 2647 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 2648 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 2649 2650 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 2651 float overlap = (overlapRegionRight - overlapRegionLeft) * 2652 (overlapRegionBottom - overlapRegionTop); 2653 if (overlap > 0) { 2654 return true; 2655 } 2656 } 2657 } 2658 return false; 2659 } 2660 2661 /* 2662 * 2663 * This method returns the CellLayout that is currently being dragged to. In order to drag 2664 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 2665 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 2666 * 2667 * Return null if no CellLayout is currently being dragged over 2668 * 2669 */ 2670 private CellLayout findMatchingPageForDragOver( 2671 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 2672 // We loop through all the screens (ie CellLayouts) and see which ones overlap 2673 // with the item being dragged and then choose the one that's closest to the touch point 2674 final int screenCount = getChildCount(); 2675 CellLayout bestMatchingScreen = null; 2676 float smallestDistSoFar = Float.MAX_VALUE; 2677 2678 for (int i = 0; i < screenCount; i++) { 2679 CellLayout cl = (CellLayout)getChildAt(i); 2680 2681 final float[] touchXy = mTempTouchCoordinates; 2682 touchXy[0] = originX + offsetX; 2683 touchXy[1] = originY + offsetY; 2684 2685 // Transform the touch coordinates to the CellLayout's local coordinates 2686 // If the touch point is within the bounds of the cell layout, we can return immediately 2687 cl.getMatrix().invert(mTempInverseMatrix); 2688 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2689 2690 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2691 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2692 return cl; 2693 } 2694 2695 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2696 // Get the center of the cell layout in screen coordinates 2697 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2698 cellLayoutCenter[0] = cl.getWidth()/2; 2699 cellLayoutCenter[1] = cl.getHeight()/2; 2700 mapPointFromChildToSelf(cl, cellLayoutCenter); 2701 2702 touchXy[0] = originX + offsetX; 2703 touchXy[1] = originY + offsetY; 2704 2705 // Calculate the distance between the center of the CellLayout 2706 // and the touch point 2707 float dist = squaredDistance(touchXy, cellLayoutCenter); 2708 2709 if (dist < smallestDistSoFar) { 2710 smallestDistSoFar = dist; 2711 bestMatchingScreen = cl; 2712 } 2713 } 2714 } 2715 return bestMatchingScreen; 2716 } 2717 2718 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2719 DragView dragView, Object dragInfo) { 2720 // When touch is inside the scroll area, skip dragOver actions for the current screen 2721 if (!mInScrollArea) { 2722 CellLayout layout; 2723 int originX = x - xOffset; 2724 int originY = y - yOffset; 2725 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2726 if (shrunken) { 2727 mLastDragView = dragView; 2728 mLastDragOriginX = originX; 2729 mLastDragOriginY = originY; 2730 mLastDragXOffset = xOffset; 2731 mLastDragYOffset = yOffset; 2732 layout = findMatchingPageForDragOver(dragView, originX, originY, xOffset, yOffset); 2733 2734 if (layout != mDragTargetLayout) { 2735 if (mDragTargetLayout != null) { 2736 mDragTargetLayout.setIsDragOverlapping(false); 2737 mSpringLoadedDragController.onDragExit(); 2738 } 2739 mDragTargetLayout = layout; 2740 // In spring-loaded mode, we still want the user to be able to hover over a 2741 // full screen (which is traditionally set to not accept drops) if they want to 2742 // get to pages beyond the screen that is full. 2743 boolean allowDragOver = (mDragTargetLayout != null) && 2744 (mDragTargetLayout.getAcceptsDrops() || 2745 (mShrinkState == ShrinkState.SPRING_LOADED)); 2746 if (allowDragOver) { 2747 mDragTargetLayout.setIsDragOverlapping(true); 2748 mSpringLoadedDragController.onDragEnter( 2749 mDragTargetLayout, mShrinkState == ShrinkState.SPRING_LOADED); 2750 } 2751 } 2752 } else { 2753 layout = getCurrentDropLayout(); 2754 if (layout != mDragTargetLayout) { 2755 if (mDragTargetLayout != null) { 2756 mDragTargetLayout.onDragExit(); 2757 } 2758 layout.onDragEnter(); 2759 mDragTargetLayout = layout; 2760 } 2761 } 2762 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2763 layout = getCurrentDropLayout(); 2764 2765 final ItemInfo item = (ItemInfo)dragInfo; 2766 if (dragInfo instanceof LauncherAppWidgetInfo) { 2767 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2768 2769 if (widgetInfo.spanX == -1) { 2770 // Calculate the grid spans needed to fit this widget 2771 int[] spans = layout.rectToCell( 2772 widgetInfo.minWidth, widgetInfo.minHeight, null); 2773 item.spanX = spans[0]; 2774 item.spanY = spans[1]; 2775 } 2776 } 2777 2778 if (source instanceof AllAppsPagedView) { 2779 // This is a hack to fix the point used to determine which cell an icon from 2780 // the all apps screen is over 2781 if (item != null && item.spanX == 1 && layout != null) { 2782 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2783 2784 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2785 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2786 dragView.setDragRegion(dragView.getDragRegionLeft(), 2787 dragView.getDragRegionTop(), 2788 layout.getCellWidth(), 2789 dragView.getDragRegionHeight()); 2790 } 2791 } 2792 } else if (source == this) { 2793 // When dragging from the workspace, the drag view is slightly bigger than 2794 // the original view, and offset vertically. Adjust to account for this. 2795 final View origView = mDragInfo.cell; 2796 originX += (dragView.getMeasuredWidth() - origView.getWidth()) / 2; 2797 originY += (dragView.getMeasuredHeight() - origView.getHeight()) / 2 2798 + dragView.getOffsetY(); 2799 } 2800 2801 if (mDragTargetLayout != null) { 2802 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2803 float[] localOrigin = { originX, originY }; 2804 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2805 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2806 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2807 } 2808 } 2809 } 2810 } 2811 2812 private void doDragExit() { 2813 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2814 if (mDragTargetLayout != null) { 2815 mDragTargetLayout.onDragExit(); 2816 } 2817 if (!mIsPageMoving) { 2818 hideOutlines(); 2819 } 2820 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2821 mLauncher.exitSpringLoadedDragMode(); 2822 } 2823 clearAllHovers(); 2824 } 2825 2826 public void onDragExit(DragSource source, int x, int y, int xOffset, 2827 int yOffset, DragView dragView, Object dragInfo) { 2828 doDragExit(); 2829 } 2830 2831 @Override 2832 public void getHitRect(Rect outRect) { 2833 // We want the workspace to have the whole area of the display (it will find the correct 2834 // cell layout to drop to in the existing drag/drop logic. 2835 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2836 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2837 } 2838 2839 /** 2840 * Add the item specified by dragInfo to the given layout. 2841 * @return true if successful 2842 */ 2843 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2844 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2845 onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); 2846 return true; 2847 } 2848 mLauncher.showOutOfSpaceMessage(); 2849 return false; 2850 } 2851 2852 /** 2853 * Drop an item that didn't originate on one of the workspace screens. 2854 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2855 * come from another app altogether. 2856 * 2857 * NOTE: This can also be called when we are outside of a drag event, when we want 2858 * to add an item to one of the workspace screens. 2859 */ 2860 private void onDropExternal(int[] touchXY, Object dragInfo, 2861 CellLayout cellLayout, boolean insertAtFirst) { 2862 int screen = indexOfChild(cellLayout); 2863 if (dragInfo instanceof PendingAddItemInfo) { 2864 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2865 // When dragging and dropping from customization tray, we deal with creating 2866 // widgets/shortcuts/folders in a slightly different way 2867 switch (info.itemType) { 2868 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2869 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2870 break; 2871 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2872 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2873 break; 2874 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2875 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2876 break; 2877 default: 2878 throw new IllegalStateException("Unknown item type: " + info.itemType); 2879 } 2880 cellLayout.onDragExit(); 2881 } else { 2882 // This is for other drag/drop cases, like dragging from All Apps 2883 ItemInfo info = (ItemInfo) dragInfo; 2884 View view = null; 2885 2886 switch (info.itemType) { 2887 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2888 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2889 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2890 // Came from all apps -- make a copy 2891 info = new ShortcutInfo((ApplicationInfo) info); 2892 } 2893 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2894 (ShortcutInfo) info); 2895 break; 2896 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2897 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2898 cellLayout, (UserFolderInfo) info, mIconCache); 2899 break; 2900 default: 2901 throw new IllegalStateException("Unknown item type: " + info.itemType); 2902 } 2903 2904 mTargetCell = new int[2]; 2905 if (touchXY != null) { 2906 // when dragging and dropping, just find the closest free spot 2907 cellLayout.findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, mTargetCell); 2908 } else { 2909 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2910 } 2911 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2912 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2913 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2914 cellLayout.onDropChild(view, animateDrop); 2915 cellLayout.animateDrop(); 2916 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2917 2918 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2919 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2920 lp.cellX, lp.cellY); 2921 } 2922 } 2923 2924 /** 2925 * Return the current {@link CellLayout}, correctly picking the destination 2926 * screen while a scroll is in progress. 2927 */ 2928 public CellLayout getCurrentDropLayout() { 2929 return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage); 2930 } 2931 2932 /** 2933 * Return the current CellInfo describing our current drag; this method exists 2934 * so that Launcher can sync this object with the correct info when the activity is created/ 2935 * destroyed 2936 * 2937 */ 2938 public CellLayout.CellInfo getDragInfo() { 2939 return mDragInfo; 2940 } 2941 2942 /** 2943 * Calculate the nearest cell where the given object would be dropped. 2944 */ 2945 private int[] findNearestVacantArea(int pixelX, int pixelY, 2946 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2947 2948 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2949 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2950 2951 // Find the best target drop location 2952 return layout.findNearestVacantArea( 2953 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2954 } 2955 2956 void setLauncher(Launcher launcher) { 2957 mLauncher = launcher; 2958 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2959 2960 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2961 if (mCustomizationDrawer != null) { 2962 mCustomizationDrawerContent = 2963 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2964 } 2965 } 2966 2967 public void setDragController(DragController dragController) { 2968 mDragController = dragController; 2969 } 2970 2971 /** 2972 * Called at the end of a drag which originated on the workspace. 2973 */ 2974 public void onDropCompleted(View target, Object dragInfo, boolean success) { 2975 if (success) { 2976 if (target != this && mDragInfo != null) { 2977 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2978 cellLayout.removeView(mDragInfo.cell); 2979 if (mDragInfo.cell instanceof DropTarget) { 2980 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2981 } 2982 // final Object tag = mDragInfo.cell.getTag(); 2983 } 2984 } else if (mDragInfo != null) { 2985 // NOTE: When 'success' is true, onDragExit is called by the DragController before 2986 // calling onDropCompleted(). We call it ourselves here, but maybe this should be 2987 // moved into DragController.cancelDrag(). 2988 doDragExit(); 2989 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, false); 2990 } 2991 mLauncher.unlockScreenOrientation(); 2992 mDragOutline = null; 2993 mDragInfo = null; 2994 } 2995 2996 @Override 2997 public void onDragViewVisible() { 2998 ((View) mDragInfo.cell).setVisibility(View.GONE); 2999 } 3000 3001 public boolean isDropEnabled() { 3002 return true; 3003 } 3004 3005 @Override 3006 protected void onRestoreInstanceState(Parcelable state) { 3007 super.onRestoreInstanceState(state); 3008 Launcher.setScreen(mCurrentPage); 3009 } 3010 3011 @Override 3012 public void scrollLeft() { 3013 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3014 super.scrollLeft(); 3015 } 3016 } 3017 3018 @Override 3019 public void scrollRight() { 3020 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3021 super.scrollRight(); 3022 } 3023 } 3024 3025 @Override 3026 public void onEnterScrollArea(int direction) { 3027 if (!mIsSmall && !mIsInUnshrinkAnimation) { 3028 mInScrollArea = true; 3029 mPendingScrollDirection = direction; 3030 3031 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 3032 final CellLayout layout = (CellLayout) getChildAt(page); 3033 3034 if (layout != null) { 3035 layout.setIsDragOverlapping(true); 3036 3037 if (mDragTargetLayout != null) { 3038 mDragTargetLayout.onDragExit(); 3039 mDragTargetLayout = null; 3040 } 3041 // In portrait, need to redraw the edge glow when entering the scroll area 3042 if (getHeight() > getWidth()) { 3043 invalidate(); 3044 } 3045 } 3046 } 3047 } 3048 3049 private void clearAllHovers() { 3050 final int childCount = getChildCount(); 3051 for (int i = 0; i < childCount; i++) { 3052 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 3053 } 3054 mSpringLoadedDragController.onDragExit(); 3055 3056 // In portrait, workspace is responsible for drawing the edge glow on adjacent pages, 3057 // so we need to redraw the workspace when this may have changed. 3058 if (getHeight() > getWidth()) { 3059 invalidate(); 3060 } 3061 } 3062 3063 @Override 3064 public void onExitScrollArea() { 3065 if (mInScrollArea) { 3066 mInScrollArea = false; 3067 mPendingScrollDirection = DragController.SCROLL_NONE; 3068 clearAllHovers(); 3069 } 3070 } 3071 3072 public Folder getFolderForTag(Object tag) { 3073 final int screenCount = getChildCount(); 3074 for (int screen = 0; screen < screenCount; screen++) { 3075 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3076 int count = currentScreen.getChildCount(); 3077 for (int i = 0; i < count; i++) { 3078 View child = currentScreen.getChildAt(i); 3079 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 3080 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 3081 Folder f = (Folder) child; 3082 if (f.getInfo() == tag && f.getInfo().opened) { 3083 return f; 3084 } 3085 } 3086 } 3087 } 3088 return null; 3089 } 3090 3091 public View getViewForTag(Object tag) { 3092 int screenCount = getChildCount(); 3093 for (int screen = 0; screen < screenCount; screen++) { 3094 ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout(); 3095 int count = currentScreen.getChildCount(); 3096 for (int i = 0; i < count; i++) { 3097 View child = currentScreen.getChildAt(i); 3098 if (child.getTag() == tag) { 3099 return child; 3100 } 3101 } 3102 } 3103 return null; 3104 } 3105 3106 3107 void removeItems(final ArrayList<ApplicationInfo> apps) { 3108 final int screenCount = getChildCount(); 3109 final PackageManager manager = getContext().getPackageManager(); 3110 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 3111 3112 final HashSet<String> packageNames = new HashSet<String>(); 3113 final int appCount = apps.size(); 3114 for (int i = 0; i < appCount; i++) { 3115 packageNames.add(apps.get(i).componentName.getPackageName()); 3116 } 3117 3118 for (int i = 0; i < screenCount; i++) { 3119 final CellLayout layoutParent = (CellLayout) getChildAt(i); 3120 final ViewGroup layout = layoutParent.getChildrenLayout(); 3121 3122 // Avoid ANRs by treating each screen separately 3123 post(new Runnable() { 3124 public void run() { 3125 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 3126 childrenToRemove.clear(); 3127 3128 int childCount = layout.getChildCount(); 3129 for (int j = 0; j < childCount; j++) { 3130 final View view = layout.getChildAt(j); 3131 Object tag = view.getTag(); 3132 3133 if (tag instanceof ShortcutInfo) { 3134 final ShortcutInfo info = (ShortcutInfo) tag; 3135 final Intent intent = info.intent; 3136 final ComponentName name = intent.getComponent(); 3137 3138 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3139 for (String packageName: packageNames) { 3140 if (packageName.equals(name.getPackageName())) { 3141 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3142 childrenToRemove.add(view); 3143 } 3144 } 3145 } 3146 } else if (tag instanceof UserFolderInfo) { 3147 final UserFolderInfo info = (UserFolderInfo) tag; 3148 final ArrayList<ShortcutInfo> contents = info.contents; 3149 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 3150 final int contentsCount = contents.size(); 3151 boolean removedFromFolder = false; 3152 3153 for (int k = 0; k < contentsCount; k++) { 3154 final ShortcutInfo appInfo = contents.get(k); 3155 final Intent intent = appInfo.intent; 3156 final ComponentName name = intent.getComponent(); 3157 3158 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3159 for (String packageName: packageNames) { 3160 if (packageName.equals(name.getPackageName())) { 3161 toRemove.add(appInfo); 3162 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 3163 removedFromFolder = true; 3164 } 3165 } 3166 } 3167 } 3168 3169 contents.removeAll(toRemove); 3170 if (removedFromFolder) { 3171 final Folder folder = getOpenFolder(); 3172 if (folder != null) 3173 folder.notifyDataSetChanged(); 3174 } 3175 } else if (tag instanceof LiveFolderInfo) { 3176 final LiveFolderInfo info = (LiveFolderInfo) tag; 3177 final Uri uri = info.uri; 3178 final ProviderInfo providerInfo = manager.resolveContentProvider( 3179 uri.getAuthority(), 0); 3180 3181 if (providerInfo != null) { 3182 for (String packageName: packageNames) { 3183 if (packageName.equals(providerInfo.packageName)) { 3184 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3185 childrenToRemove.add(view); 3186 } 3187 } 3188 } 3189 } else if (tag instanceof LauncherAppWidgetInfo) { 3190 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 3191 final AppWidgetProviderInfo provider = 3192 widgets.getAppWidgetInfo(info.appWidgetId); 3193 if (provider != null) { 3194 for (String packageName: packageNames) { 3195 if (packageName.equals(provider.provider.getPackageName())) { 3196 LauncherModel.deleteItemFromDatabase(mLauncher, info); 3197 childrenToRemove.add(view); 3198 } 3199 } 3200 } 3201 } 3202 } 3203 3204 childCount = childrenToRemove.size(); 3205 for (int j = 0; j < childCount; j++) { 3206 View child = childrenToRemove.get(j); 3207 // Note: We can not remove the view directly from CellLayoutChildren as this 3208 // does not re-mark the spaces as unoccupied. 3209 layoutParent.removeViewInLayout(child); 3210 if (child instanceof DropTarget) { 3211 mDragController.removeDropTarget((DropTarget)child); 3212 } 3213 } 3214 3215 if (childCount > 0) { 3216 layout.requestLayout(); 3217 layout.invalidate(); 3218 } 3219 } 3220 }); 3221 } 3222 } 3223 3224 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 3225 final int screenCount = getChildCount(); 3226 for (int i = 0; i < screenCount; i++) { 3227 final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout(); 3228 int childCount = layout.getChildCount(); 3229 for (int j = 0; j < childCount; j++) { 3230 final View view = layout.getChildAt(j); 3231 Object tag = view.getTag(); 3232 if (tag instanceof ShortcutInfo) { 3233 ShortcutInfo info = (ShortcutInfo)tag; 3234 // We need to check for ACTION_MAIN otherwise getComponent() might 3235 // return null for some shortcuts (for instance, for shortcuts to 3236 // web pages.) 3237 final Intent intent = info.intent; 3238 final ComponentName name = intent.getComponent(); 3239 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 3240 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 3241 final int appCount = apps.size(); 3242 for (int k = 0; k < appCount; k++) { 3243 ApplicationInfo app = apps.get(k); 3244 if (app.componentName.equals(name)) { 3245 info.setIcon(mIconCache.getIcon(info.intent)); 3246 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 3247 new FastBitmapDrawable(info.getIcon(mIconCache)), 3248 null, null); 3249 } 3250 } 3251 } 3252 } 3253 } 3254 } 3255 } 3256 3257 void moveToDefaultScreen(boolean animate) { 3258 if (mIsSmall || mIsInUnshrinkAnimation) { 3259 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 3260 } else if (animate) { 3261 snapToPage(mDefaultPage); 3262 } else { 3263 setCurrentPage(mDefaultPage); 3264 } 3265 getChildAt(mDefaultPage).requestFocus(); 3266 } 3267 3268 void setIndicators(Drawable previous, Drawable next) { 3269 mPreviousIndicator = previous; 3270 mNextIndicator = next; 3271 previous.setLevel(mCurrentPage); 3272 next.setLevel(mCurrentPage); 3273 } 3274 3275 @Override 3276 public void syncPages() { 3277 } 3278 3279 @Override 3280 public void syncPageItems(int page) { 3281 } 3282 3283} 3284