Workspace.java revision ce93f7ebdb296846ba2f01b7eb3e69a3230f3025
1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.launcher2; 18 19import com.android.launcher.R; 20import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 21 22import android.animation.Animator; 23import android.animation.AnimatorListenerAdapter; 24import android.animation.AnimatorSet; 25import android.animation.ObjectAnimator; 26import android.animation.PropertyValuesHolder; 27import android.animation.TimeInterpolator; 28import android.animation.ValueAnimator; 29import android.animation.Animator.AnimatorListener; 30import android.animation.ValueAnimator.AnimatorUpdateListener; 31import android.app.AlertDialog; 32import android.app.WallpaperManager; 33import android.appwidget.AppWidgetManager; 34import android.appwidget.AppWidgetProviderInfo; 35import android.content.ClipData; 36import android.content.ClipDescription; 37import android.content.ComponentName; 38import android.content.Context; 39import android.content.Intent; 40import android.content.pm.PackageManager; 41import android.content.pm.ProviderInfo; 42import android.content.res.Resources; 43import android.content.res.TypedArray; 44import android.graphics.Bitmap; 45import android.graphics.Camera; 46import android.graphics.Canvas; 47import android.graphics.Matrix; 48import android.graphics.Paint; 49import android.graphics.Rect; 50import android.graphics.RectF; 51import android.graphics.Region.Op; 52import android.graphics.drawable.Drawable; 53import android.net.Uri; 54import android.os.IBinder; 55import android.os.Parcelable; 56import android.util.AttributeSet; 57import android.util.Log; 58import android.util.Pair; 59import android.view.Display; 60import android.view.DragEvent; 61import android.view.MotionEvent; 62import android.view.View; 63import android.view.animation.DecelerateInterpolator; 64import android.widget.TextView; 65import android.widget.Toast; 66 67import java.util.ArrayList; 68import java.util.HashSet; 69import java.util.List; 70 71/** 72 * The workspace is a wide area with a wallpaper and a finite number of pages. 73 * Each page contains a number of icons, folders or widgets the user can 74 * interact with. A workspace is meant to be used with a fixed width only. 75 */ 76public class Workspace extends SmoothPagedView 77 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 78 @SuppressWarnings({"UnusedDeclaration"}) 79 private static final String TAG = "Launcher.Workspace"; 80 81 // This is how much the workspace shrinks when we enter all apps or 82 // customization mode 83 private static final float SHRINK_FACTOR = 0.16f; 84 85 // How much the screens shrink when we enter spring loaded drag mode 86 private static final float SPRING_LOADED_DRAG_SHRINK_FACTOR = 0.7f; 87 88 // Y rotation to apply to the workspace screens 89 private static final float WORKSPACE_ROTATION = 12.5f; 90 91 // These are extra scale factors to apply to the mini home screens 92 // so as to achieve the desired transform 93 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 94 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 95 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 96 97 private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; 98 private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; 99 private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; 100 101 private static final int BACKGROUND_FADE_OUT_DURATION = 350; 102 private static final int BACKGROUND_FADE_IN_DURATION = 350; 103 104 // These animators are used to fade the children's outlines 105 private ObjectAnimator mChildrenOutlineFadeInAnimation; 106 private ObjectAnimator mChildrenOutlineFadeOutAnimation; 107 private float mChildrenOutlineAlpha = 0; 108 109 // These properties refer to the background protection gradient used for AllApps and Customize 110 private ObjectAnimator mBackgroundFadeInAnimation; 111 private ObjectAnimator mBackgroundFadeOutAnimation; 112 private Drawable mBackground; 113 private Drawable mCustomizeTrayBackground; 114 private boolean mDrawCustomizeTrayBackground; 115 private float mBackgroundAlpha = 0; 116 private float mOverScrollMaxBackgroundAlpha = 0.0f; 117 private int mOverScrollPageIndex = -1; 118 119 private View mCustomizationDrawer; 120 private View mCustomizationDrawerContent; 121 private int[] mCustomizationDrawerPos = new int[2]; 122 private float[] mCustomizationDrawerTransformedPos = new float[2]; 123 124 private final WallpaperManager mWallpaperManager; 125 126 private int mDefaultPage; 127 128 private boolean mPageMoving = false; 129 private boolean mIsDragInProcess = false; 130 131 /** 132 * CellInfo for the cell that is currently being dragged 133 */ 134 private CellLayout.CellInfo mDragInfo; 135 136 /** 137 * Target drop area calculated during last acceptDrop call. 138 */ 139 private int[] mTargetCell = null; 140 141 /** 142 * The CellLayout that is currently being dragged over 143 */ 144 private CellLayout mDragTargetLayout = null; 145 146 private Launcher mLauncher; 147 private IconCache mIconCache; 148 private DragController mDragController; 149 150 // These are temporary variables to prevent having to allocate a new object just to 151 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 152 private int[] mTempCell = new int[2]; 153 private int[] mTempEstimate = new int[2]; 154 private float[] mTempOriginXY = new float[2]; 155 private float[] mTempDragCoordinates = new float[2]; 156 private float[] mTempTouchCoordinates = new float[2]; 157 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 158 private float[] mTempDragBottomRightCoordinates = new float[2]; 159 private Matrix mTempInverseMatrix = new Matrix(); 160 161 private SpringLoadedDragController mSpringLoadedDragController; 162 163 private static final int DEFAULT_CELL_COUNT_X = 4; 164 private static final int DEFAULT_CELL_COUNT_Y = 4; 165 166 private Drawable mPreviousIndicator; 167 private Drawable mNextIndicator; 168 169 // State variable that indicates whether the pages are small (ie when you're 170 // in all apps or customize mode) 171 private boolean mIsSmall = false; 172 private boolean mIsInUnshrinkAnimation = false; 173 private AnimatorListener mShrinkAnimationListener; 174 private AnimatorListener mUnshrinkAnimationListener; 175 enum ShrinkState { TOP, SPRING_LOADED, MIDDLE, BOTTOM_HIDDEN, BOTTOM_VISIBLE }; 176 private ShrinkState mShrinkState; 177 private boolean mWasSpringLoadedOnDragExit = false; 178 private boolean mWaitingToShrink = false; 179 private ShrinkState mWaitingToShrinkState; 180 private AnimatorSet mAnimator; 181 182 /** Is the user is dragging an item near the edge of a page? */ 183 private boolean mInScrollArea = false; 184 185 /** If mInScrollArea is true, the direction of the scroll. */ 186 private int mPendingScrollDirection = DragController.SCROLL_NONE; 187 188 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 189 private Bitmap mDragOutline = null; 190 private final Rect mTempRect = new Rect(); 191 private final int[] mTempXY = new int[2]; 192 193 private ValueAnimator mDropAnim = null; 194 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 195 private View mDropView = null; 196 private int[] mDropViewPos = new int[] { -1, -1 }; 197 198 // Paint used to draw external drop outline 199 private final Paint mExternalDragOutlinePaint = new Paint(); 200 201 // Camera and Matrix used to determine the final position of a neighboring CellLayout 202 private final Matrix mMatrix = new Matrix(); 203 private final Camera mCamera = new Camera(); 204 private final float mTempFloat2[] = new float[2]; 205 206 /** 207 * Used to inflate the Workspace from XML. 208 * 209 * @param context The application's context. 210 * @param attrs The attributes set containing the Workspace's customization values. 211 */ 212 public Workspace(Context context, AttributeSet attrs) { 213 this(context, attrs, 0); 214 } 215 216 /** 217 * Used to inflate the Workspace from XML. 218 * 219 * @param context The application's context. 220 * @param attrs The attributes set containing the Workspace's customization values. 221 * @param defStyle Unused. 222 */ 223 public Workspace(Context context, AttributeSet attrs, int defStyle) { 224 super(context, attrs, defStyle); 225 mContentIsRefreshable = false; 226 227 if (!LauncherApplication.isScreenXLarge()) { 228 mFadeInAdjacentScreens = false; 229 } 230 231 mWallpaperManager = WallpaperManager.getInstance(context); 232 233 TypedArray a = context.obtainStyledAttributes(attrs, 234 R.styleable.Workspace, defStyle, 0); 235 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 236 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 237 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 238 a.recycle(); 239 240 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 241 setHapticFeedbackEnabled(false); 242 243 initWorkspace(); 244 } 245 246 /** 247 * Initializes various states for this workspace. 248 */ 249 protected void initWorkspace() { 250 Context context = getContext(); 251 mCurrentPage = mDefaultPage; 252 Launcher.setScreen(mCurrentPage); 253 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 254 mIconCache = app.getIconCache(); 255 mExternalDragOutlinePaint.setAntiAlias(true); 256 setWillNotDraw(false); 257 258 try { 259 final Resources res = getResources(); 260 mBackground = res.getDrawable(R.drawable.all_apps_bg_gradient); 261 mCustomizeTrayBackground = res.getDrawable(R.drawable.customize_bg_gradient); 262 } catch (Resources.NotFoundException e) { 263 // In this case, we will skip drawing background protection 264 } 265 266 mUnshrinkAnimationListener = new AnimatorListenerAdapter() { 267 @Override 268 public void onAnimationStart(Animator animation) { 269 mIsInUnshrinkAnimation = true; 270 disableCacheUpdates(); 271 } 272 @Override 273 public void onAnimationEnd(Animator animation) { 274 mIsInUnshrinkAnimation = false; 275 if (mShrinkState != ShrinkState.SPRING_LOADED) { 276 mDrawCustomizeTrayBackground = false; 277 } 278 enableCacheUpdates(); 279 } 280 }; 281 mShrinkAnimationListener = new AnimatorListenerAdapter() { 282 @Override 283 public void onAnimationStart(Animator animation) { 284 disableCacheUpdates(); 285 } 286 @Override 287 public void onAnimationEnd(Animator animation) { 288 enableCacheUpdates(); 289 } 290 }; 291 mSnapVelocity = 600; 292 } 293 294 @Override 295 protected int getScrollMode() { 296 if (LauncherApplication.isScreenXLarge()) { 297 return SmoothPagedView.X_LARGE_MODE; 298 } else { 299 return SmoothPagedView.DEFAULT_MODE; 300 } 301 } 302 303 @Override 304 public void addView(View child, int index, LayoutParams params) { 305 if (!(child instanceof CellLayout)) { 306 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 307 } 308 ((CellLayout) child).setOnInterceptTouchListener(this); 309 super.addView(child, index, params); 310 } 311 312 @Override 313 public void addView(View child) { 314 if (!(child instanceof CellLayout)) { 315 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 316 } 317 ((CellLayout) child).setOnInterceptTouchListener(this); 318 super.addView(child); 319 } 320 321 @Override 322 public void addView(View child, int index) { 323 if (!(child instanceof CellLayout)) { 324 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 325 } 326 ((CellLayout) child).setOnInterceptTouchListener(this); 327 super.addView(child, index); 328 } 329 330 @Override 331 public void addView(View child, int width, int height) { 332 if (!(child instanceof CellLayout)) { 333 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 334 } 335 ((CellLayout) child).setOnInterceptTouchListener(this); 336 super.addView(child, width, height); 337 } 338 339 @Override 340 public void addView(View child, LayoutParams params) { 341 if (!(child instanceof CellLayout)) { 342 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 343 } 344 ((CellLayout) child).setOnInterceptTouchListener(this); 345 super.addView(child, params); 346 } 347 348 /** 349 * @return The open folder on the current screen, or null if there is none 350 */ 351 Folder getOpenFolder() { 352 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 353 int count = currentPage.getChildCount(); 354 for (int i = 0; i < count; i++) { 355 View child = currentPage.getChildAt(i); 356 if (child instanceof Folder) { 357 Folder folder = (Folder) child; 358 if (folder.getInfo().opened) 359 return folder; 360 } 361 } 362 return null; 363 } 364 365 ArrayList<Folder> getOpenFolders() { 366 final int screenCount = getChildCount(); 367 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 368 369 for (int screen = 0; screen < screenCount; screen++) { 370 CellLayout currentPage = (CellLayout) getChildAt(screen); 371 int count = currentPage.getChildCount(); 372 for (int i = 0; i < count; i++) { 373 View child = currentPage.getChildAt(i); 374 if (child instanceof Folder) { 375 Folder folder = (Folder) child; 376 if (folder.getInfo().opened) 377 folders.add(folder); 378 break; 379 } 380 } 381 } 382 return folders; 383 } 384 385 boolean isDefaultPageShowing() { 386 return mCurrentPage == mDefaultPage; 387 } 388 389 /** 390 * Sets the current screen. 391 * 392 * @param currentPage 393 */ 394 @Override 395 void setCurrentPage(int currentPage) { 396 super.setCurrentPage(currentPage); 397 updateWallpaperOffset(mScrollX); 398 } 399 400 /** 401 * Adds the specified child in the specified screen. The position and dimension of 402 * the child are defined by x, y, spanX and spanY. 403 * 404 * @param child The child to add in one of the workspace's screens. 405 * @param screen The screen in which to add the child. 406 * @param x The X position of the child in the screen's grid. 407 * @param y The Y position of the child in the screen's grid. 408 * @param spanX The number of cells spanned horizontally by the child. 409 * @param spanY The number of cells spanned vertically by the child. 410 */ 411 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 412 addInScreen(child, screen, x, y, spanX, spanY, false); 413 } 414 415 void addInFullScreen(View child, int screen) { 416 addInScreen(child, screen, 0, 0, -1, -1); 417 } 418 419 /** 420 * Adds the specified child in the specified screen. The position and dimension of 421 * the child are defined by x, y, spanX and spanY. 422 * 423 * @param child The child to add in one of the workspace's screens. 424 * @param screen The screen in which to add the child. 425 * @param x The X position of the child in the screen's grid. 426 * @param y The Y position of the child in the screen's grid. 427 * @param spanX The number of cells spanned horizontally by the child. 428 * @param spanY The number of cells spanned vertically by the child. 429 * @param insert When true, the child is inserted at the beginning of the children list. 430 */ 431 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 432 if (screen < 0 || screen >= getChildCount()) { 433 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 434 + " (was " + screen + "); skipping child"); 435 return; 436 } 437 438 final CellLayout group = (CellLayout) getChildAt(screen); 439 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 440 if (lp == null) { 441 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 442 } else { 443 lp.cellX = x; 444 lp.cellY = y; 445 lp.cellHSpan = spanX; 446 lp.cellVSpan = spanY; 447 } 448 449 // Get the canonical child id to uniquely represent this view in this screen 450 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 451 boolean markCellsAsOccupied = !(child instanceof Folder); 452 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 453 // TODO: This branch occurs when the workspace is adding views 454 // outside of the defined grid 455 // maybe we should be deleting these items from the LauncherModel? 456 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 457 } 458 459 if (!(child instanceof Folder)) { 460 child.setHapticFeedbackEnabled(false); 461 child.setOnLongClickListener(mLongClickListener); 462 } 463 if (child instanceof DropTarget) { 464 mDragController.addDropTarget((DropTarget) child); 465 } 466 } 467 468 public boolean onTouch(View v, MotionEvent event) { 469 // this is an intercepted event being forwarded from a cell layout 470 if (mIsSmall || mIsInUnshrinkAnimation) { 471 // Only allow clicks on a CellLayout if it is visible 472 if (mShrinkState != ShrinkState.BOTTOM_HIDDEN) { 473 mLauncher.onWorkspaceClick((CellLayout) v); 474 } 475 return true; 476 } else if (!mPageMoving) { 477 if (v == getChildAt(mCurrentPage - 1)) { 478 snapToPage(mCurrentPage - 1); 479 return true; 480 } else if (v == getChildAt(mCurrentPage + 1)) { 481 snapToPage(mCurrentPage + 1); 482 return true; 483 } 484 } 485 return false; 486 } 487 488 protected void onWindowVisibilityChanged (int visibility) { 489 mLauncher.onWindowVisibilityChanged(visibility); 490 } 491 492 @Override 493 public boolean dispatchUnhandledMove(View focused, int direction) { 494 if (mIsSmall || mIsInUnshrinkAnimation) { 495 // when the home screens are shrunken, shouldn't allow side-scrolling 496 return false; 497 } 498 return super.dispatchUnhandledMove(focused, direction); 499 } 500 501 @Override 502 public boolean onInterceptTouchEvent(MotionEvent ev) { 503 if (mIsSmall || mIsInUnshrinkAnimation) { 504 if (mLauncher.isAllAppsVisible() && 505 mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 506 // Intercept this event so we can show the workspace in full view 507 // when it is clicked on and it is small 508 return true; 509 } 510 return false; 511 } 512 return super.onInterceptTouchEvent(ev); 513 } 514 515 @Override 516 protected void determineScrollingStart(MotionEvent ev) { 517 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 518 } 519 520 protected void onPageBeginMoving() { 521 if (mNextPage != INVALID_PAGE) { 522 // we're snapping to a particular screen 523 enableChildrenCache(mCurrentPage, mNextPage); 524 } else { 525 // this is when user is actively dragging a particular screen, they might 526 // swipe it either left or right (but we won't advance by more than one screen) 527 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 528 } 529 showOutlines(); 530 mPageMoving = true; 531 } 532 533 protected void onPageEndMoving() { 534 clearChildrenCache(); 535 // Hide the outlines, as long as we're not dragging 536 if (!mDragController.dragging()) { 537 hideOutlines(); 538 } 539 mOverScrollMaxBackgroundAlpha = 0.0f; 540 mOverScrollPageIndex = -1; 541 mPageMoving = false; 542 } 543 544 @Override 545 protected void notifyPageSwitchListener() { 546 super.notifyPageSwitchListener(); 547 548 if (mPreviousIndicator != null) { 549 // if we know the next page, we show the indication for it right away; it looks 550 // weird if the indicators are lagging 551 int page = mNextPage; 552 if (page == INVALID_PAGE) { 553 page = mCurrentPage; 554 } 555 mPreviousIndicator.setLevel(page); 556 mNextIndicator.setLevel(page); 557 } 558 Launcher.setScreen(mCurrentPage); 559 }; 560 561 private void updateWallpaperOffset(int scrollRange) { 562 final boolean isStaticWallpaper = (mWallpaperManager != null) && 563 (mWallpaperManager.getWallpaperInfo() == null); 564 if (LauncherApplication.isScreenXLarge() && !isStaticWallpaper) { 565 IBinder token = getWindowToken(); 566 if (token != null) { 567 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0 ); 568 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 569 Math.max(0.f, Math.min(mScrollX/(float)scrollRange, 1.f)), 0); 570 } 571 } 572 } 573 574 public void showOutlines() { 575 if (!mIsSmall && !mIsInUnshrinkAnimation) { 576 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 577 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 578 mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f); 579 mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); 580 mChildrenOutlineFadeInAnimation.start(); 581 } 582 } 583 584 public void hideOutlines() { 585 if (!mIsSmall && !mIsInUnshrinkAnimation) { 586 if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); 587 if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); 588 mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f); 589 mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); 590 mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); 591 mChildrenOutlineFadeOutAnimation.start(); 592 } 593 } 594 595 public void setChildrenOutlineAlpha(float alpha) { 596 mChildrenOutlineAlpha = alpha; 597 for (int i = 0; i < getChildCount(); i++) { 598 CellLayout cl = (CellLayout) getChildAt(i); 599 cl.setBackgroundAlpha(alpha); 600 } 601 } 602 603 public float getChildrenOutlineAlpha() { 604 return mChildrenOutlineAlpha; 605 } 606 607 private void showBackgroundGradientForAllApps() { 608 showBackgroundGradient(); 609 mDrawCustomizeTrayBackground = false; 610 } 611 612 private void showBackgroundGradientForCustomizeTray() { 613 showBackgroundGradient(); 614 mDrawCustomizeTrayBackground = true; 615 } 616 617 private void showBackgroundGradient() { 618 if (mBackground == null) return; 619 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 620 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 621 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 622 mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 623 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 624 mBackgroundFadeInAnimation.start(); 625 } 626 627 private void hideBackgroundGradient() { 628 if (mBackground == null) return; 629 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 630 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 631 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 632 mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); 633 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 634 mBackgroundFadeOutAnimation.start(); 635 } 636 637 public void setBackgroundAlpha(float alpha) { 638 mBackgroundAlpha = alpha; 639 invalidate(); 640 } 641 642 public float getBackgroundAlpha() { 643 return mBackgroundAlpha; 644 } 645 646 /** 647 * Due to 3D transformations, if two CellLayouts are theoretically touching each other, 648 * on the xy plane, when one is rotated along the y-axis, the gap between them is perceived 649 * as being larger. This method computes what offset the rotated view should be translated 650 * in order to minimize this perceived gap. 651 * @param degrees Angle of the view 652 * @param width Width of the view 653 * @param height Height of the view 654 * @return Offset to be used in a View.setTranslationX() call 655 */ 656 private float getOffsetXForRotation(float degrees, int width, int height) { 657 mMatrix.reset(); 658 mCamera.save(); 659 mCamera.rotateY(Math.abs(degrees)); 660 mCamera.getMatrix(mMatrix); 661 mCamera.restore(); 662 663 mMatrix.preTranslate(-width * 0.5f, -height * 0.5f); 664 mMatrix.postTranslate(width * 0.5f, height * 0.5f); 665 mTempFloat2[0] = width; 666 mTempFloat2[1] = height; 667 mMatrix.mapPoints(mTempFloat2); 668 return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f); 669 } 670 671 float backgroundAlphaInterpolator(float r) { 672 float pivotA = 0.1f; 673 float pivotB = 0.4f; 674 if (r < pivotA) { 675 return 0; 676 } else if (r > pivotB) { 677 return 1.0f; 678 } else { 679 return (r - pivotA)/(pivotB - pivotA); 680 } 681 } 682 683 float overScrollBackgroundAlphaInterpolator(float r) { 684 float threshold = 0.08f; 685 686 if (r > mOverScrollMaxBackgroundAlpha) { 687 mOverScrollMaxBackgroundAlpha = r; 688 } else if (r < mOverScrollMaxBackgroundAlpha) { 689 r = mOverScrollMaxBackgroundAlpha; 690 } 691 692 return Math.min(r / threshold, 1.0f); 693 } 694 695 @Override 696 protected void screenScrolled(int screenCenter) { 697 final int halfScreenSize = getMeasuredWidth() / 2; 698 699 for (int i = 0; i < getChildCount(); i++) { 700 CellLayout cl = (CellLayout) getChildAt(i); 701 if (cl != null) { 702 int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing; 703 int delta = screenCenter - (getChildOffset(i) - 704 getRelativeChildOffset(i) + halfScreenSize); 705 706 float scrollProgress = delta / (totalDistance * 1.0f); 707 scrollProgress = Math.min(scrollProgress, 1.0f); 708 scrollProgress = Math.max(scrollProgress, -1.0f); 709 710 // If the current page (i) is being overscrolled, we use a different 711 // set of rules for setting the background alpha multiplier. 712 if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX && 713 i == getChildCount() -1 )) { 714 cl.setBackgroundAlphaMultiplier( 715 overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress))); 716 mOverScrollPageIndex = i; 717 } else if (mOverScrollPageIndex != i) { 718 cl.setBackgroundAlphaMultiplier( 719 backgroundAlphaInterpolator(Math.abs(scrollProgress))); 720 721 } 722 723 float rotation = WORKSPACE_ROTATION * scrollProgress; 724 float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 725 cl.setTranslationX(translationX); 726 727 cl.setRotationY(rotation); 728 } 729 } 730 } 731 732 protected void onAttachedToWindow() { 733 super.onAttachedToWindow(); 734 computeScroll(); 735 mDragController.setWindowToken(getWindowToken()); 736 } 737 738 @Override 739 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 740 super.onLayout(changed, left, top, right, bottom); 741 742 // if shrinkToBottom() is called on initialization, it has to be deferred 743 // until after the first call to onLayout so that it has the correct width 744 if (mWaitingToShrink) { 745 // shrink can trigger a synchronous onLayout call, so we 746 // post this to avoid a stack overflow / tangled onLayout calls 747 post(new Runnable() { 748 public void run() { 749 shrink(mWaitingToShrinkState, false); 750 mWaitingToShrink = false; 751 } 752 }); 753 } 754 755 if (LauncherApplication.isInPlaceRotationEnabled()) { 756 // When the device is rotated, the scroll position of the current screen 757 // needs to be refreshed 758 setCurrentPage(getCurrentPage()); 759 } 760 } 761 762 public void enableCacheUpdates() { 763 final int pageCount = getChildCount(); 764 for (int i = 0; i < pageCount; i++) { 765 final CellLayout page = (CellLayout) getChildAt(i); 766 page.enableCacheUpdates(); 767 } 768 } 769 770 public void disableCacheUpdates() { 771 final int pageCount = getChildCount(); 772 for (int i = 0; i < pageCount; i++) { 773 final CellLayout page = (CellLayout) getChildAt(i); 774 page.disableCacheUpdates(); 775 } 776 } 777 778 @Override 779 protected void onDraw(Canvas canvas) { 780 // Draw the background gradient if necessary 781 if (mBackground != null && mBackgroundAlpha > 0.0f) { 782 int alpha = (int) (mBackgroundAlpha * 255); 783 if (mDrawCustomizeTrayBackground) { 784 // Find out where to offset the gradient for the customization tray content 785 mCustomizationDrawer.getLocationOnScreen(mCustomizationDrawerPos); 786 final Matrix m = mCustomizationDrawer.getMatrix(); 787 mCustomizationDrawerTransformedPos[0] = 0.0f; 788 mCustomizationDrawerTransformedPos[1] = mCustomizationDrawerContent.getTop(); 789 m.mapPoints(mCustomizationDrawerTransformedPos); 790 791 // Draw the bg glow behind the gradient 792 mCustomizeTrayBackground.setAlpha(alpha); 793 mCustomizeTrayBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 794 getMeasuredHeight()); 795 mCustomizeTrayBackground.draw(canvas); 796 797 // Draw the bg gradient 798 final int offset = (int) (mCustomizationDrawerPos[1] + 799 mCustomizationDrawerTransformedPos[1]); 800 mBackground.setAlpha(alpha); 801 mBackground.setBounds(mScrollX, offset, mScrollX + getMeasuredWidth(), 802 offset + getMeasuredHeight()); 803 mBackground.draw(canvas); 804 } else { 805 mBackground.setAlpha(alpha); 806 mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(), 807 getMeasuredHeight()); 808 mBackground.draw(canvas); 809 } 810 } 811 super.onDraw(canvas); 812 } 813 814 @Override 815 protected void dispatchDraw(Canvas canvas) { 816 if (mIsSmall || mIsInUnshrinkAnimation) { 817 // Draw all the workspaces if we're small 818 final int pageCount = getChildCount(); 819 final long drawingTime = getDrawingTime(); 820 for (int i = 0; i < pageCount; i++) { 821 final View page = (View) getChildAt(i); 822 823 drawChild(canvas, page, drawingTime); 824 } 825 } else { 826 super.dispatchDraw(canvas); 827 828 final int width = getWidth(); 829 final int height = getHeight(); 830 831 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 832 if (mInScrollArea && (height > width)) { 833 final int pageHeight = getChildAt(0).getHeight(); 834 835 // This determines the height of the glowing edge: 90% of the page height 836 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 837 838 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 839 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 840 841 if (leftPage != null && leftPage.getIsDragOverlapping()) { 842 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 843 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 844 d.draw(canvas); 845 } else if (rightPage != null && rightPage.getIsDragOverlapping()) { 846 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 847 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 848 d.draw(canvas); 849 } 850 } 851 852 if (mDropView != null) { 853 // We are animating an item that was just dropped on the home screen. 854 // Render its View in the current animation position. 855 canvas.save(Canvas.MATRIX_SAVE_FLAG); 856 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 857 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 858 canvas.translate(xPos, yPos); 859 mDropView.draw(canvas); 860 canvas.restore(); 861 } 862 } 863 } 864 865 @Override 866 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 867 if (!mLauncher.isAllAppsVisible()) { 868 final Folder openFolder = getOpenFolder(); 869 if (openFolder != null) { 870 return openFolder.requestFocus(direction, previouslyFocusedRect); 871 } else { 872 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 873 } 874 } 875 return false; 876 } 877 878 @Override 879 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 880 if (!mLauncher.isAllAppsVisible()) { 881 final Folder openFolder = getOpenFolder(); 882 if (openFolder != null) { 883 openFolder.addFocusables(views, direction); 884 } else { 885 super.addFocusables(views, direction, focusableMode); 886 } 887 } 888 } 889 890 @Override 891 public boolean dispatchTouchEvent(MotionEvent ev) { 892 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 893 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 894 // ie when you click on a mini-screen, it zooms back to that screen) 895 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 896 return false; 897 } 898 } 899 900 return super.dispatchTouchEvent(ev); 901 } 902 903 void enableChildrenCache(int fromPage, int toPage) { 904 if (fromPage > toPage) { 905 final int temp = fromPage; 906 fromPage = toPage; 907 toPage = temp; 908 } 909 910 final int screenCount = getChildCount(); 911 912 fromPage = Math.max(fromPage, 0); 913 toPage = Math.min(toPage, screenCount - 1); 914 915 for (int i = fromPage; i <= toPage; i++) { 916 final CellLayout layout = (CellLayout) getChildAt(i); 917 layout.setChildrenDrawnWithCacheEnabled(true); 918 layout.setChildrenDrawingCacheEnabled(true); 919 } 920 } 921 922 void clearChildrenCache() { 923 final int screenCount = getChildCount(); 924 for (int i = 0; i < screenCount; i++) { 925 final CellLayout layout = (CellLayout) getChildAt(i); 926 layout.setChildrenDrawnWithCacheEnabled(false); 927 } 928 } 929 930 @Override 931 public boolean onTouchEvent(MotionEvent ev) { 932 if (mLauncher.isAllAppsVisible()) { 933 // Cancel any scrolling that is in progress. 934 if (!mScroller.isFinished()) { 935 mScroller.abortAnimation(); 936 } 937 setCurrentPage(mCurrentPage); 938 939 if (mShrinkState == ShrinkState.BOTTOM_HIDDEN) { 940 mLauncher.showWorkspace(true); 941 // Let the events fall through to the CellLayouts because if they are not 942 // hit, then we get a crash due to a missing ACTION_DOWN touch event 943 } 944 945 return false; // We don't want the events 946 } 947 948 return super.onTouchEvent(ev); 949 } 950 951 @Override 952 protected void onWallpaperTap(MotionEvent ev) { 953 final int[] position = mTempCell; 954 getLocationOnScreen(position); 955 956 int pointerIndex = ev.getActionIndex(); 957 position[0] += (int) ev.getX(pointerIndex); 958 position[1] += (int) ev.getY(pointerIndex); 959 960 mWallpaperManager.sendWallpaperCommand(getWindowToken(), 961 ev.getAction() == MotionEvent.ACTION_UP 962 ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, 963 position[0], position[1], 0, null); 964 } 965 966 public boolean isSmall() { 967 return mIsSmall; 968 } 969 970 private float getYScaleForScreen(int screen) { 971 int x = Math.abs(screen - 2); 972 973 // TODO: This should be generalized for use with arbitrary rotation angles. 974 switch(x) { 975 case 0: return EXTRA_SCALE_FACTOR_0; 976 case 1: return EXTRA_SCALE_FACTOR_1; 977 case 2: return EXTRA_SCALE_FACTOR_2; 978 } 979 return 1.0f; 980 } 981 982 public void shrink(ShrinkState shrinkState) { 983 shrink(shrinkState, true); 984 } 985 986 // we use this to shrink the workspace for the all apps view and the customize view 987 public void shrink(ShrinkState shrinkState, boolean animated) { 988 if (mFirstLayout) { 989 // (mFirstLayout == "first layout has not happened yet") 990 // if we get a call to shrink() as part of our initialization (for example, if 991 // Launcher is started in All Apps mode) then we need to wait for a layout call 992 // to get our width so we can layout the mini-screen views correctly 993 mWaitingToShrink = true; 994 mWaitingToShrinkState = shrinkState; 995 return; 996 } 997 mIsSmall = true; 998 mShrinkState = shrinkState; 999 1000 // Stop any scrolling, move to the current page right away 1001 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 1002 if (!mIsDragInProcess) { 1003 updateWhichPagesAcceptDrops(mShrinkState); 1004 } 1005 1006 // we intercept and reject all touch events when we're small, so be sure to reset the state 1007 mTouchState = TOUCH_STATE_REST; 1008 mActivePointerId = INVALID_POINTER; 1009 1010 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 1011 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 1012 currentPage.setBackgroundAlpha(0.0f); 1013 } 1014 currentPage.setBackgroundAlphaMultiplier(1.0f); 1015 1016 final Resources res = getResources(); 1017 final int screenWidth = getWidth(); 1018 final int screenHeight = getHeight(); 1019 1020 // Making the assumption that all pages have the same width as the 0th 1021 final int pageWidth = getChildAt(0).getMeasuredWidth(); 1022 final int pageHeight = getChildAt(0).getMeasuredHeight(); 1023 1024 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 1025 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 1026 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 1027 1028 final int screenCount = getChildCount(); 1029 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 1030 1031 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 1032 float newY = (isPortrait ? 1033 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 1034 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 1035 float finalAlpha = 1.0f; 1036 float extraShrinkFactor = 1.0f; 1037 if (shrinkState == ShrinkState.BOTTOM_VISIBLE) { 1038 newY = screenHeight - newY - scaledPageHeight; 1039 } else if (shrinkState == ShrinkState.BOTTOM_HIDDEN) { 1040 1041 // We shrink and disappear to nothing in the case of all apps 1042 // (which is when we shrink to the bottom) 1043 newY = screenHeight - newY - scaledPageHeight; 1044 finalAlpha = 0.0f; 1045 } else if (shrinkState == ShrinkState.MIDDLE) { 1046 newY = screenHeight / 2 - scaledPageHeight / 2; 1047 finalAlpha = 1.0f; 1048 } else if (shrinkState == ShrinkState.TOP) { 1049 newY = (isPortrait ? 1050 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 1051 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 1052 } 1053 1054 // We animate all the screens to the centered position in workspace 1055 // At the same time, the screens become greyed/dimmed 1056 1057 // newX is initialized to the left-most position of the centered screens 1058 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 1059 1060 // We are going to scale about the center of the view, so we need to adjust the positions 1061 // of the views accordingly 1062 newX -= (pageWidth - scaledPageWidth) / 2.0f; 1063 newY -= (pageHeight - scaledPageHeight) / 2.0f; 1064 1065 if (mAnimator != null) { 1066 mAnimator.cancel(); 1067 } 1068 mAnimator = new AnimatorSet(); 1069 for (int i = 0; i < screenCount; i++) { 1070 CellLayout cl = (CellLayout) getChildAt(i); 1071 1072 float rotation = (-i + 2) * WORKSPACE_ROTATION; 1073 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 1074 float rotationScaleY = getYScaleForScreen(i); 1075 1076 if (animated) { 1077 final int duration = res.getInteger(R.integer.config_workspaceShrinkTime); 1078 1079 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1080 PropertyValuesHolder.ofFloat("x", newX), 1081 PropertyValuesHolder.ofFloat("y", newY), 1082 PropertyValuesHolder.ofFloat("scaleX", 1083 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 1084 PropertyValuesHolder.ofFloat("scaleY", 1085 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 1086 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 1087 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 1088 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1089 1090 animWithInterpolator.setDuration(duration); 1091 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 1092 mAnimator.playTogether(animWithInterpolator); 1093 } else { 1094 cl.setX((int)newX); 1095 cl.setY((int)newY); 1096 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 1097 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 1098 cl.setBackgroundAlpha(finalAlpha); 1099 cl.setAlpha(finalAlpha); 1100 cl.setRotationY(rotation); 1101 mShrinkAnimationListener.onAnimationEnd(null); 1102 } 1103 // increment newX for the next screen 1104 newX += scaledPageWidth + extraScaledSpacing; 1105 } 1106 setLayoutScale(1.0f); 1107 if (animated) { 1108 mAnimator.addListener(mShrinkAnimationListener); 1109 mAnimator.start(); 1110 } 1111 setChildrenDrawnWithCacheEnabled(true); 1112 1113 if (shrinkState == ShrinkState.TOP) { 1114 showBackgroundGradientForCustomizeTray(); 1115 } else { 1116 showBackgroundGradientForAllApps(); 1117 } 1118 } 1119 1120 /* 1121 * This interpolator emulates the rate at which the perceived scale of an object changes 1122 * as its distance from a camera increases. When this interpolator is applied to a scale 1123 * animation on a view, it evokes the sense that the object is shrinking due to moving away 1124 * from the camera. 1125 */ 1126 static class ZInterpolator implements TimeInterpolator { 1127 private float focalLength; 1128 1129 public ZInterpolator(float foc) { 1130 focalLength = foc; 1131 } 1132 1133 public float getInterpolation(float input) { 1134 return (1.0f - focalLength / (focalLength + input)) / 1135 (1.0f - focalLength / (focalLength + 1.0f)); 1136 } 1137 } 1138 1139 /* 1140 * The exact reverse of ZInterpolator. 1141 */ 1142 static class InverseZInterpolator implements TimeInterpolator { 1143 private ZInterpolator zInterpolator; 1144 public InverseZInterpolator(float foc) { 1145 zInterpolator = new ZInterpolator(foc); 1146 } 1147 public float getInterpolation(float input) { 1148 return 1 - zInterpolator.getInterpolation(1 - input); 1149 } 1150 } 1151 1152 /* 1153 * ZInterpolator compounded with an ease-out. 1154 */ 1155 static class ZoomOutInterpolator implements TimeInterpolator { 1156 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 1157 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 1158 1159 public float getInterpolation(float input) { 1160 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 1161 } 1162 } 1163 1164 /* 1165 * InvereZInterpolator compounded with an ease-out. 1166 */ 1167 static class ZoomInInterpolator implements TimeInterpolator { 1168 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 1169 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 1170 1171 public float getInterpolation(float input) { 1172 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 1173 } 1174 } 1175 1176 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 1177 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 1178 1179 private void updateWhichPagesAcceptDrops(ShrinkState state) { 1180 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 1181 } 1182 1183 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkState state, int spanX, int spanY) { 1184 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 1185 } 1186 1187 private void updateWhichPagesAcceptDropsHelper( 1188 ShrinkState state, boolean isDragHappening, int spanX, int spanY) { 1189 final int screenCount = getChildCount(); 1190 for (int i = 0; i < screenCount; i++) { 1191 CellLayout cl = (CellLayout) getChildAt(i); 1192 cl.setIsDragOccuring(isDragHappening); 1193 switch (state) { 1194 case TOP: 1195 cl.setIsDefaultDropTarget(i == mCurrentPage); 1196 case BOTTOM_HIDDEN: 1197 case BOTTOM_VISIBLE: 1198 if (!isDragHappening) { 1199 // even if a drag isn't happening, we don't want to show a screen as 1200 // accepting drops if it doesn't have at least one free cell 1201 spanX = 1; 1202 spanY = 1; 1203 } 1204 // the page accepts drops if we can find at least one empty spot 1205 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 1206 break; 1207 default: 1208 throw new RuntimeException( 1209 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkState"); 1210 } 1211 } 1212 } 1213 1214 /* 1215 * 1216 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 1217 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 1218 * 1219 * These methods mark the appropriate pages as accepting drops (which alters their visual 1220 * appearance). 1221 * 1222 */ 1223 public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) { 1224 mIsDragInProcess = true; 1225 1226 final Canvas canvas = new Canvas(); 1227 1228 // We need to add extra padding to the bitmap to make room for the glow effect 1229 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1230 1231 // The outline is used to visualize where the item will land if dropped 1232 mDragOutline = createDragOutline(b, canvas, bitmapPadding); 1233 1234 updateWhichPagesAcceptDropsDuringDrag(mShrinkState, spanX, spanY); 1235 } 1236 1237 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1238 // never dragged over 1239 public void onDragStopped() { 1240 mIsDragInProcess = false; 1241 updateWhichPagesAcceptDrops(mShrinkState); 1242 } 1243 1244 @Override 1245 protected boolean handlePagingClicks() { 1246 return true; 1247 } 1248 1249 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1250 public void unshrink(CellLayout clThatWasClicked) { 1251 unshrink(clThatWasClicked, false); 1252 } 1253 1254 public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) { 1255 int newCurrentPage = indexOfChild(clThatWasClicked); 1256 if (mIsSmall) { 1257 if (springLoaded) { 1258 setLayoutScale(SPRING_LOADED_DRAG_SHRINK_FACTOR); 1259 } 1260 moveToNewPageWithoutMovingCellLayouts(newCurrentPage); 1261 unshrink(true, springLoaded); 1262 } 1263 } 1264 1265 1266 public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) { 1267 mShrinkState = ShrinkState.SPRING_LOADED; 1268 unshrink(clThatWasClicked, true); 1269 mDragTargetLayout.onDragEnter(); 1270 } 1271 1272 public void exitSpringLoadedDragMode(ShrinkState shrinkState) { 1273 shrink(shrinkState); 1274 if (mDragTargetLayout != null) { 1275 mDragTargetLayout.onDragExit(); 1276 } 1277 } 1278 1279 void unshrink(boolean animated) { 1280 unshrink(animated, false); 1281 } 1282 1283 void unshrink(boolean animated, boolean springLoaded) { 1284 if (mIsSmall) { 1285 float finalScaleFactor = 1.0f; 1286 float finalBackgroundAlpha = 0.0f; 1287 if (springLoaded) { 1288 finalScaleFactor = SPRING_LOADED_DRAG_SHRINK_FACTOR; 1289 finalBackgroundAlpha = 1.0f; 1290 } else { 1291 mIsSmall = false; 1292 } 1293 if (mAnimator != null) { 1294 mAnimator.cancel(); 1295 } 1296 1297 mAnimator = new AnimatorSet(); 1298 final int screenCount = getChildCount(); 1299 1300 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1301 for (int i = 0; i < screenCount; i++) { 1302 final CellLayout cl = (CellLayout)getChildAt(i); 1303 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1304 float finalAlphaMultiplierValue = 1305 ((i == mCurrentPage) && (mShrinkState != ShrinkState.SPRING_LOADED)) ? 1306 0.0f : 1.0f; 1307 float rotation = 0.0f; 1308 1309 if (i < mCurrentPage) { 1310 rotation = WORKSPACE_ROTATION; 1311 } else if (i > mCurrentPage) { 1312 rotation = -WORKSPACE_ROTATION; 1313 } 1314 1315 float translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight()); 1316 1317 if (animated) { 1318 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1319 PropertyValuesHolder.ofFloat("translationX", translation), 1320 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1321 PropertyValuesHolder.ofFloat("scaleX", finalScaleFactor), 1322 PropertyValuesHolder.ofFloat("scaleY", finalScaleFactor), 1323 PropertyValuesHolder.ofFloat("backgroundAlpha", finalBackgroundAlpha), 1324 PropertyValuesHolder.ofFloat("backgroundAlphaMultiplier", 1325 finalAlphaMultiplierValue), 1326 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1327 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1328 animWithInterpolator.setDuration(duration); 1329 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1330 mAnimator.playTogether(animWithInterpolator); 1331 } else { 1332 cl.setTranslationX(translation); 1333 cl.setTranslationY(0.0f); 1334 cl.setScaleX(finalScaleFactor); 1335 cl.setScaleY(finalScaleFactor); 1336 cl.setBackgroundAlpha(0.0f); 1337 cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue); 1338 cl.setAlpha(finalAlphaValue); 1339 cl.setRotationY(rotation); 1340 mUnshrinkAnimationListener.onAnimationEnd(null); 1341 } 1342 } 1343 1344 if (animated) { 1345 // If we call this when we're not animated, onAnimationEnd is never called on 1346 // the listener; make sure we only use the listener when we're actually animating 1347 mAnimator.addListener(mUnshrinkAnimationListener); 1348 mAnimator.start(); 1349 } 1350 } 1351 1352 if (!springLoaded) { 1353 hideBackgroundGradient(); 1354 } 1355 } 1356 1357 /** 1358 * Draw the View v into the given Canvas. 1359 * 1360 * @param v the view to draw 1361 * @param destCanvas the canvas to draw on 1362 * @param padding the horizontal and vertical padding to use when drawing 1363 */ 1364 private void drawDragView(View v, Canvas destCanvas, int padding) { 1365 final Rect clipRect = mTempRect; 1366 v.getDrawingRect(clipRect); 1367 1368 // For a TextView, adjust the clip rect so that we don't include the text label 1369 if (v instanceof BubbleTextView) { 1370 final BubbleTextView tv = (BubbleTextView) v; 1371 clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + 1372 tv.getLayout().getLineTop(0); 1373 } else if (v instanceof TextView) { 1374 final TextView tv = (TextView) v; 1375 clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + 1376 tv.getLayout().getLineTop(0); 1377 } 1378 1379 // Draw the View into the bitmap. 1380 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1381 // they set scrollX and scrollY to large values to achieve centered text 1382 1383 destCanvas.save(); 1384 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1385 destCanvas.clipRect(clipRect, Op.REPLACE); 1386 v.draw(destCanvas); 1387 destCanvas.restore(); 1388 } 1389 1390 /** 1391 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1392 * Responsibility for the bitmap is transferred to the caller. 1393 */ 1394 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1395 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1396 final Bitmap b = Bitmap.createBitmap( 1397 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1398 1399 canvas.setBitmap(b); 1400 drawDragView(v, canvas, padding); 1401 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1402 return b; 1403 } 1404 1405 /** 1406 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1407 * Responsibility for the bitmap is transferred to the caller. 1408 */ 1409 private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding) { 1410 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1411 final Bitmap b = Bitmap.createBitmap( 1412 orig.getWidth() + padding, orig.getHeight() + padding, Bitmap.Config.ARGB_8888); 1413 1414 canvas.setBitmap(b); 1415 canvas.drawBitmap(orig, 0, 0, new Paint()); 1416 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1417 1418 return b; 1419 } 1420 1421 /** 1422 * Creates a drag outline to represent a drop (that we don't have the actual information for 1423 * yet). May be changed in the future to alter the drop outline slightly depending on the 1424 * clip description mime data. 1425 */ 1426 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1427 Resources r = getResources(); 1428 final int outlineColor = r.getColor(R.color.drag_outline_color); 1429 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1430 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1431 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1432 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1433 final Bitmap b = Bitmap.createBitmap( 1434 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1435 1436 canvas.setBitmap(b); 1437 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1438 rectRadius, rectRadius, mExternalDragOutlinePaint); 1439 mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); 1440 return b; 1441 } 1442 1443 /** 1444 * Returns a new bitmap to show when the given View is being dragged around. 1445 * Responsibility for the bitmap is transferred to the caller. 1446 */ 1447 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1448 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1449 final Bitmap b = Bitmap.createBitmap( 1450 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1451 1452 canvas.setBitmap(b); 1453 canvas.drawBitmap(mDragOutline, 0, 0, null); 1454 drawDragView(v, canvas, padding); 1455 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1456 1457 return b; 1458 } 1459 1460 void startDrag(CellLayout.CellInfo cellInfo) { 1461 View child = cellInfo.cell; 1462 1463 // Make sure the drag was started by a long press as opposed to a long click. 1464 if (!child.isInTouchMode()) { 1465 return; 1466 } 1467 1468 mDragInfo = cellInfo; 1469 mDragInfo.screen = mCurrentPage; 1470 1471 CellLayout current = getCurrentDropLayout(); 1472 1473 current.onDragChild(child); 1474 1475 child.clearFocus(); 1476 child.setPressed(false); 1477 1478 final Canvas canvas = new Canvas(); 1479 1480 // We need to add extra padding to the bitmap to make room for the glow effect 1481 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1482 1483 // The outline is used to visualize where the item will land if dropped 1484 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1485 1486 // The drag bitmap follows the touch point around on the screen 1487 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1488 1489 final int bmpWidth = b.getWidth(); 1490 final int bmpHeight = b.getHeight(); 1491 child.getLocationOnScreen(mTempXY); 1492 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1493 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1494 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1495 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1496 b.recycle(); 1497 } 1498 1499 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1500 boolean insertAtFirst, int intersectX, int intersectY) { 1501 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1502 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1503 1504 final int[] cellXY = new int[2]; 1505 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1506 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1507 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1508 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1509 cellXY[0], cellXY[1]); 1510 } 1511 1512 private void setPositionForDropAnimation( 1513 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1514 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1515 1516 // Based on the position of the drag view, find the top left of the original view 1517 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1518 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1519 viewX += getResources().getInteger(R.integer.config_dragViewOffsetX); 1520 viewY += getResources().getInteger(R.integer.config_dragViewOffsetY); 1521 1522 // Set its old pos (in the new parent's coordinates); it will be animated 1523 // in animateViewIntoPosition after the next layout pass 1524 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1525 lp.oldY = viewY - (parent.getTop() - mScrollY); 1526 } 1527 1528 /* 1529 * We should be careful that this method cannot result in any synchronous requestLayout() 1530 * calls, as it is called from onLayout(). 1531 */ 1532 public void animateViewIntoPosition(final View view) { 1533 final CellLayout parent = (CellLayout) view.getParent(); 1534 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1535 1536 // Convert the animation params to be relative to the Workspace, not the CellLayout 1537 final int fromX = lp.oldX + parent.getLeft(); 1538 final int fromY = lp.oldY + parent.getTop(); 1539 1540 final int dx = lp.x - lp.oldX; 1541 final int dy = lp.y - lp.oldY; 1542 1543 // Calculate the duration of the animation based on the object's distance 1544 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1545 final Resources res = getResources(); 1546 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1547 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1548 if (dist < maxDist) { 1549 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1550 } 1551 1552 if (mDropAnim != null) { 1553 mDropAnim.end(); 1554 } 1555 mDropAnim = new ValueAnimator(); 1556 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1557 1558 // The view is invisible during the animation; we render it manually. 1559 mDropAnim.addListener(new AnimatorListenerAdapter() { 1560 public void onAnimationStart(Animator animation) { 1561 // Set this here so that we don't render it until the animation begins 1562 mDropView = view; 1563 } 1564 1565 public void onAnimationEnd(Animator animation) { 1566 if (mDropView != null) { 1567 mDropView.setVisibility(View.VISIBLE); 1568 mDropView = null; 1569 } 1570 } 1571 }); 1572 1573 mDropAnim.setDuration(duration); 1574 mDropAnim.setFloatValues(0.0f, 1.0f); 1575 mDropAnim.removeAllUpdateListeners(); 1576 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1577 public void onAnimationUpdate(ValueAnimator animation) { 1578 final float percent = (Float) animation.getAnimatedValue(); 1579 // Invalidate the old position 1580 invalidate(mDropViewPos[0], mDropViewPos[1], 1581 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1582 1583 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1584 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1585 invalidate(mDropViewPos[0], mDropViewPos[1], 1586 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1587 } 1588 }); 1589 1590 mDropAnim.start(); 1591 } 1592 1593 /** 1594 * {@inheritDoc} 1595 */ 1596 public boolean acceptDrop(DragSource source, int x, int y, 1597 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1598 1599 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1600 if (source != this) { 1601 // Don't accept the drop if we're not over a screen at time of drop 1602 if (mDragTargetLayout == null || !mDragTargetLayout.getAcceptsDrops()) { 1603 return false; 1604 } 1605 1606 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1607 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1608 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1609 1610 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1611 1612 // Don't accept the drop if there's no room for the item 1613 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1614 mLauncher.showOutOfSpaceMessage(); 1615 return false; 1616 } 1617 } 1618 return true; 1619 } 1620 1621 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1622 DragView dragView, Object dragInfo) { 1623 1624 int originX = x - xOffset; 1625 int originY = y - yOffset; 1626 1627 if (mIsSmall || mIsInUnshrinkAnimation) { 1628 // get originX and originY in the local coordinate system of the screen 1629 mTempOriginXY[0] = originX; 1630 mTempOriginXY[1] = originY; 1631 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1632 originX = (int)mTempOriginXY[0]; 1633 originY = (int)mTempOriginXY[1]; 1634 } 1635 1636 // When you drag to a particular screen, make that the new current/default screen, so any 1637 // subsequent taps add items to that screen 1638 int dragTargetIndex = indexOfChild(mDragTargetLayout); 1639 if (mCurrentPage != dragTargetIndex && (mIsSmall || mIsInUnshrinkAnimation)) { 1640 moveToNewPageWithoutMovingCellLayouts(dragTargetIndex); 1641 } 1642 1643 if (source != this) { 1644 if (!mIsSmall || mWasSpringLoadedOnDragExit) { 1645 onDropExternal(originX, originY, dragInfo, mDragTargetLayout, false); 1646 } else { 1647 // if we drag and drop to small screens, don't pass the touch x/y coords (when we 1648 // enable spring-loaded adding, however, we do want to pass the touch x/y coords) 1649 onDropExternal(-1, -1, dragInfo, mDragTargetLayout, false); 1650 } 1651 } else if (mDragInfo != null) { 1652 final View cell = mDragInfo.cell; 1653 CellLayout dropTargetLayout = mDragTargetLayout; 1654 1655 // Handle the case where the user drops when in the scroll area. 1656 // This is treated as a drop on the adjacent page. 1657 if (dropTargetLayout == null && mInScrollArea) { 1658 if (mPendingScrollDirection == DragController.SCROLL_LEFT) { 1659 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage - 1); 1660 } else if (mPendingScrollDirection == DragController.SCROLL_RIGHT) { 1661 dropTargetLayout = (CellLayout) getChildAt(mCurrentPage + 1); 1662 } 1663 } 1664 1665 if (dropTargetLayout != null) { 1666 // Move internally 1667 mTargetCell = findNearestVacantArea(originX, originY, 1668 mDragInfo.spanX, mDragInfo.spanY, cell, dropTargetLayout, 1669 mTargetCell); 1670 1671 final int screen = (mTargetCell == null) ? 1672 mDragInfo.screen : indexOfChild(dropTargetLayout); 1673 1674 if (screen != mCurrentPage) { 1675 snapToPage(screen); 1676 } 1677 1678 if (mTargetCell != null) { 1679 if (screen != mDragInfo.screen) { 1680 // Reparent the view 1681 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1682 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1683 mDragInfo.spanX, mDragInfo.spanY); 1684 } 1685 1686 // update the item's position after drop 1687 final ItemInfo info = (ItemInfo) cell.getTag(); 1688 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1689 dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1690 lp.cellX = mTargetCell[0]; 1691 lp.cellY = mTargetCell[1]; 1692 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1693 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1694 1695 LauncherModel.moveItemInDatabase(mLauncher, info, 1696 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1697 lp.cellX, lp.cellY); 1698 } 1699 } 1700 1701 final CellLayout parent = (CellLayout) cell.getParent(); 1702 1703 // Prepare it to be animated into its new position 1704 // This must be called after the view has been re-parented 1705 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1706 boolean animateDrop = !mWasSpringLoadedOnDragExit; 1707 parent.onDropChild(cell, animateDrop); 1708 } 1709 } 1710 1711 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1712 int yOffset, DragView dragView, Object dragInfo) { 1713 mDragTargetLayout = null; // Reset the drag state 1714 1715 if (!mIsSmall) { 1716 mDragTargetLayout = getCurrentDropLayout(); 1717 mDragTargetLayout.onDragEnter(); 1718 showOutlines(); 1719 } 1720 } 1721 1722 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1723 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1724 1725 if (mIsSmall || mIsInUnshrinkAnimation) { 1726 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1727 return null; 1728 } 1729 // We may need to delegate the drag to a child view. If a 1x1 item 1730 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1731 // then drag events should be handled by that child. 1732 1733 ItemInfo item = (ItemInfo)dragInfo; 1734 CellLayout currentLayout = getCurrentDropLayout(); 1735 1736 int dragPointX, dragPointY; 1737 if (item.spanX == 1 && item.spanY == 1) { 1738 // For a 1x1, calculate the drop cell exactly as in onDragOver 1739 dragPointX = x - xOffset; 1740 dragPointY = y - yOffset; 1741 } else { 1742 // Otherwise, use the exact drag coordinates 1743 dragPointX = x; 1744 dragPointY = y; 1745 } 1746 dragPointX += mScrollX - currentLayout.getLeft(); 1747 dragPointY += mScrollY - currentLayout.getTop(); 1748 1749 // If we are dragging over a cell that contains a DropTarget that will 1750 // accept the drop, delegate to that DropTarget. 1751 final int[] cellXY = mTempCell; 1752 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1753 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1754 if (child instanceof DropTarget) { 1755 DropTarget target = (DropTarget)child; 1756 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1757 return target; 1758 } 1759 } 1760 return null; 1761 } 1762 1763 /** 1764 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1765 * in the returned structure related to the widgets that match the drop (or a null list if it is 1766 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1767 */ 1768 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1769 final LauncherModel model = mLauncher.getModel(); 1770 final ClipDescription desc = event.getClipDescription(); 1771 final int mimeTypeCount = desc.getMimeTypeCount(); 1772 for (int i = 0; i < mimeTypeCount; ++i) { 1773 final String mimeType = desc.getMimeType(i); 1774 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1775 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1776 } else { 1777 final List<WidgetMimeTypeHandlerData> widgets = 1778 model.resolveWidgetsForMimeType(mContext, mimeType); 1779 if (widgets.size() > 0) { 1780 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1781 } 1782 } 1783 } 1784 return null; 1785 } 1786 1787 /** 1788 * Global drag and drop handler 1789 */ 1790 @Override 1791 public boolean onDragEvent(DragEvent event) { 1792 final ClipDescription desc = event.getClipDescription(); 1793 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1794 final int[] pos = new int[2]; 1795 layout.getLocationOnScreen(pos); 1796 // We need to offset the drag coordinates to layout coordinate space 1797 final int x = (int) event.getX() - pos[0]; 1798 final int y = (int) event.getY() - pos[1]; 1799 1800 switch (event.getAction()) { 1801 case DragEvent.ACTION_DRAG_STARTED: { 1802 // Validate this drag 1803 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1804 if (test != null) { 1805 boolean isShortcut = (test.second == null); 1806 if (isShortcut) { 1807 // Check if we have enough space on this screen to add a new shortcut 1808 if (!layout.findCellForSpan(pos, 1, 1)) { 1809 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1810 Toast.LENGTH_SHORT).show(); 1811 return false; 1812 } 1813 } 1814 } else { 1815 // Show error message if we couldn't accept any of the items 1816 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1817 Toast.LENGTH_SHORT).show(); 1818 return false; 1819 } 1820 1821 // Create the drag outline 1822 // We need to add extra padding to the bitmap to make room for the glow effect 1823 final Canvas canvas = new Canvas(); 1824 final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS; 1825 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1826 1827 // Show the current page outlines to indicate that we can accept this drop 1828 showOutlines(); 1829 layout.setIsDragOccuring(true); 1830 layout.onDragEnter(); 1831 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1832 1833 return true; 1834 } 1835 case DragEvent.ACTION_DRAG_LOCATION: 1836 // Visualize the drop location 1837 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1838 return true; 1839 case DragEvent.ACTION_DROP: { 1840 // Try and add any shortcuts 1841 final LauncherModel model = mLauncher.getModel(); 1842 final ClipData data = event.getClipData(); 1843 1844 // We assume that the mime types are ordered in descending importance of 1845 // representation. So we enumerate the list of mime types and alert the 1846 // user if any widgets can handle the drop. Only the most preferred 1847 // representation will be handled. 1848 pos[0] = x; 1849 pos[1] = y; 1850 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1851 if (test != null) { 1852 final int index = test.first; 1853 final List<WidgetMimeTypeHandlerData> widgets = test.second; 1854 final boolean isShortcut = (widgets == null); 1855 final String mimeType = desc.getMimeType(index); 1856 if (isShortcut) { 1857 final Intent intent = data.getItem(index).getIntent(); 1858 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1859 onDropExternal(x, y, info, layout, false); 1860 } else { 1861 if (widgets.size() == 1) { 1862 // If there is only one item, then go ahead and add and configure 1863 // that widget 1864 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 1865 final PendingAddWidgetInfo createInfo = 1866 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 1867 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 1868 } else { 1869 // Show the widget picker dialog if there is more than one widget 1870 // that can handle this data type 1871 final InstallWidgetReceiver.WidgetListAdapter adapter = 1872 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 1873 data, widgets, layout, mCurrentPage, pos); 1874 final AlertDialog.Builder builder = 1875 new AlertDialog.Builder(mContext); 1876 builder.setAdapter(adapter, adapter); 1877 builder.setCancelable(true); 1878 builder.setTitle(mContext.getString( 1879 R.string.external_drop_widget_pick_title)); 1880 builder.setIcon(R.drawable.ic_no_applications); 1881 builder.show(); 1882 } 1883 } 1884 } 1885 return true; 1886 } 1887 case DragEvent.ACTION_DRAG_ENDED: 1888 // Hide the page outlines after the drop 1889 layout.setIsDragOccuring(false); 1890 layout.onDragExit(); 1891 hideOutlines(); 1892 return true; 1893 } 1894 return super.onDragEvent(event); 1895 } 1896 1897 /* 1898 * 1899 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1900 * coordinate space. The argument xy is modified with the return result. 1901 * 1902 */ 1903 void mapPointFromSelfToChild(View v, float[] xy) { 1904 mapPointFromSelfToChild(v, xy, null); 1905 } 1906 1907 /* 1908 * 1909 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1910 * coordinate space. The argument xy is modified with the return result. 1911 * 1912 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1913 * computing it itself; we use this to avoid redundant matrix inversions in 1914 * findMatchingPageForDragOver 1915 * 1916 */ 1917 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1918 if (cachedInverseMatrix == null) { 1919 v.getMatrix().invert(mTempInverseMatrix); 1920 cachedInverseMatrix = mTempInverseMatrix; 1921 } 1922 xy[0] = xy[0] + mScrollX - v.getLeft(); 1923 xy[1] = xy[1] + mScrollY - v.getTop(); 1924 cachedInverseMatrix.mapPoints(xy); 1925 } 1926 1927 /* 1928 * 1929 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1930 * the parent View's coordinate space. The argument xy is modified with the return result. 1931 * 1932 */ 1933 void mapPointFromChildToSelf(View v, float[] xy) { 1934 v.getMatrix().mapPoints(xy); 1935 xy[0] -= (mScrollX - v.getLeft()); 1936 xy[1] -= (mScrollY - v.getTop()); 1937 } 1938 1939 static private float squaredDistance(float[] point1, float[] point2) { 1940 float distanceX = point1[0] - point2[0]; 1941 float distanceY = point2[1] - point2[1]; 1942 return distanceX * distanceX + distanceY * distanceY; 1943 } 1944 1945 /* 1946 * 1947 * Returns true if the passed CellLayout cl overlaps with dragView 1948 * 1949 */ 1950 boolean overlaps(CellLayout cl, DragView dragView, 1951 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1952 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1953 final float[] draggedItemTopLeft = mTempDragCoordinates; 1954 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1955 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1956 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1957 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1958 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1959 1960 // Transform the dragged item's top left coordinates 1961 // to the CellLayout's local coordinates 1962 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1963 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1964 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1965 1966 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1967 // Transform the dragged item's bottom right coordinates 1968 // to the CellLayout's local coordinates 1969 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1970 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1971 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1972 1973 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1974 float overlap = (overlapRegionRight - overlapRegionLeft) * 1975 (overlapRegionBottom - overlapRegionTop); 1976 if (overlap > 0) { 1977 return true; 1978 } 1979 } 1980 } 1981 return false; 1982 } 1983 1984 /* 1985 * 1986 * This method returns the CellLayout that is currently being dragged to. In order to drag 1987 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 1988 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 1989 * 1990 * Return null if no CellLayout is currently being dragged over 1991 * 1992 */ 1993 private CellLayout findMatchingPageForDragOver( 1994 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 1995 // We loop through all the screens (ie CellLayouts) and see which ones overlap 1996 // with the item being dragged and then choose the one that's closest to the touch point 1997 final int screenCount = getChildCount(); 1998 CellLayout bestMatchingScreen = null; 1999 float smallestDistSoFar = Float.MAX_VALUE; 2000 2001 for (int i = 0; i < screenCount; i++) { 2002 CellLayout cl = (CellLayout)getChildAt(i); 2003 2004 final float[] touchXy = mTempTouchCoordinates; 2005 touchXy[0] = originX + offsetX; 2006 touchXy[1] = originY + offsetY; 2007 2008 // Transform the touch coordinates to the CellLayout's local coordinates 2009 // If the touch point is within the bounds of the cell layout, we can return immediately 2010 cl.getMatrix().invert(mTempInverseMatrix); 2011 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 2012 2013 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 2014 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 2015 return cl; 2016 } 2017 2018 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 2019 // Get the center of the cell layout in screen coordinates 2020 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 2021 cellLayoutCenter[0] = cl.getWidth()/2; 2022 cellLayoutCenter[1] = cl.getHeight()/2; 2023 mapPointFromChildToSelf(cl, cellLayoutCenter); 2024 2025 touchXy[0] = originX + offsetX; 2026 touchXy[1] = originY + offsetY; 2027 2028 // Calculate the distance between the center of the CellLayout 2029 // and the touch point 2030 float dist = squaredDistance(touchXy, cellLayoutCenter); 2031 2032 if (dist < smallestDistSoFar) { 2033 smallestDistSoFar = dist; 2034 bestMatchingScreen = cl; 2035 } 2036 } 2037 } 2038 return bestMatchingScreen; 2039 } 2040 2041 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 2042 DragView dragView, Object dragInfo) { 2043 // When touch is inside the scroll area, skip dragOver actions for the current screen 2044 if (!mInScrollArea) { 2045 CellLayout layout; 2046 int originX = x - xOffset; 2047 int originY = y - yOffset; 2048 boolean shrunken = mIsSmall || mIsInUnshrinkAnimation; 2049 if (shrunken) { 2050 layout = findMatchingPageForDragOver( 2051 dragView, originX, originY, xOffset, yOffset); 2052 2053 if (layout != mDragTargetLayout) { 2054 if (mDragTargetLayout != null) { 2055 mDragTargetLayout.setIsDragOverlapping(false); 2056 mSpringLoadedDragController.onDragExit(); 2057 } 2058 mDragTargetLayout = layout; 2059 if (mDragTargetLayout != null && mDragTargetLayout.getAcceptsDrops()) { 2060 mDragTargetLayout.setIsDragOverlapping(true); 2061 mSpringLoadedDragController.onDragEnter(mDragTargetLayout); 2062 } 2063 } 2064 } else { 2065 layout = getCurrentDropLayout(); 2066 if (layout != mDragTargetLayout) { 2067 if (mDragTargetLayout != null) { 2068 mDragTargetLayout.onDragExit(); 2069 } 2070 layout.onDragEnter(); 2071 mDragTargetLayout = layout; 2072 } 2073 } 2074 if (!shrunken || mShrinkState == ShrinkState.SPRING_LOADED) { 2075 layout = getCurrentDropLayout(); 2076 2077 final ItemInfo item = (ItemInfo)dragInfo; 2078 if (dragInfo instanceof LauncherAppWidgetInfo) { 2079 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 2080 2081 if (widgetInfo.spanX == -1) { 2082 // Calculate the grid spans needed to fit this widget 2083 int[] spans = layout.rectToCell( 2084 widgetInfo.minWidth, widgetInfo.minHeight, null); 2085 item.spanX = spans[0]; 2086 item.spanY = spans[1]; 2087 } 2088 } 2089 2090 if (source instanceof AllAppsPagedView) { 2091 // This is a hack to fix the point used to determine which cell an icon from 2092 // the all apps screen is over 2093 if (item != null && item.spanX == 1 && layout != null) { 2094 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 2095 2096 originX += dragRegionLeft - dragView.getDragRegionLeft(); 2097 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 2098 dragView.setDragRegion(dragView.getDragRegionLeft(), 2099 dragView.getDragRegionTop(), 2100 layout.getCellWidth(), 2101 dragView.getDragRegionHeight()); 2102 } 2103 } 2104 } 2105 2106 if (mDragTargetLayout != null) { 2107 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 2108 float[] localOrigin = { originX, originY }; 2109 mapPointFromSelfToChild(mDragTargetLayout, localOrigin, null); 2110 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 2111 (int) localOrigin[0], (int) localOrigin[1], item.spanX, item.spanY); 2112 } 2113 } 2114 } 2115 } 2116 2117 public void onDragExit(DragSource source, int x, int y, int xOffset, 2118 int yOffset, DragView dragView, Object dragInfo) { 2119 mWasSpringLoadedOnDragExit = mShrinkState == ShrinkState.SPRING_LOADED; 2120 if (mDragTargetLayout != null) { 2121 mDragTargetLayout.onDragExit(); 2122 } 2123 if (!mIsPageMoving) { 2124 hideOutlines(); 2125 } 2126 if (mShrinkState == ShrinkState.SPRING_LOADED) { 2127 mLauncher.exitSpringLoadedDragMode(); 2128 } 2129 clearAllHovers(); 2130 } 2131 2132 @Override 2133 public void getHitRect(Rect outRect) { 2134 // We want the workspace to have the whole area of the display (it will find the correct 2135 // cell layout to drop to in the existing drag/drop logic. 2136 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 2137 outRect.set(0, 0, d.getWidth(), d.getHeight()); 2138 } 2139 2140 /** 2141 * Add the item specified by dragInfo to the given layout. 2142 * @return true if successful 2143 */ 2144 public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { 2145 if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { 2146 onDropExternal(-1, -1, (ItemInfo) dragInfo, (CellLayout) layout, false); 2147 return true; 2148 } 2149 mLauncher.showOutOfSpaceMessage(); 2150 return false; 2151 } 2152 2153 /** 2154 * Drop an item that didn't originate on one of the workspace screens. 2155 * It may have come from Launcher (e.g. from all apps or customize), or it may have 2156 * come from another app altogether. 2157 * 2158 * NOTE: This can also be called when we are outside of a drag event, when we want 2159 * to add an item to one of the workspace screens. 2160 */ 2161 private void onDropExternal(int x, int y, Object dragInfo, 2162 CellLayout cellLayout, boolean insertAtFirst) { 2163 int screen = indexOfChild(cellLayout); 2164 if (dragInfo instanceof PendingAddItemInfo) { 2165 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 2166 // When dragging and dropping from customization tray, we deal with creating 2167 // widgets/shortcuts/folders in a slightly different way 2168 // Only set touchXY if you are supporting spring loaded adding of items 2169 int[] touchXY = new int[2]; 2170 touchXY[0] = x; 2171 touchXY[1] = y; 2172 switch (info.itemType) { 2173 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 2174 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 2175 break; 2176 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 2177 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 2178 break; 2179 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2180 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 2181 break; 2182 default: 2183 throw new IllegalStateException("Unknown item type: " + info.itemType); 2184 } 2185 cellLayout.onDragExit(); 2186 } else { 2187 // This is for other drag/drop cases, like dragging from All Apps 2188 ItemInfo info = (ItemInfo) dragInfo; 2189 View view = null; 2190 2191 switch (info.itemType) { 2192 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 2193 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 2194 if (info.container == NO_ID && info instanceof ApplicationInfo) { 2195 // Came from all apps -- make a copy 2196 info = new ShortcutInfo((ApplicationInfo) info); 2197 } 2198 view = mLauncher.createShortcut(R.layout.application, cellLayout, 2199 (ShortcutInfo) info); 2200 break; 2201 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 2202 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 2203 cellLayout, (UserFolderInfo) info, mIconCache); 2204 break; 2205 default: 2206 throw new IllegalStateException("Unknown item type: " + info.itemType); 2207 } 2208 2209 mTargetCell = new int[2]; 2210 if (x != -1 && y != -1) { 2211 // when dragging and dropping, just find the closest free spot 2212 cellLayout.findNearestVacantArea(x, y, 1, 1, mTargetCell); 2213 } else { 2214 cellLayout.findCellForSpan(mTargetCell, 1, 1); 2215 } 2216 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 2217 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 2218 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2219 cellLayout.onDropChild(view, animateDrop); 2220 cellLayout.animateDrop(); 2221 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 2222 2223 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 2224 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 2225 lp.cellX, lp.cellY); 2226 } 2227 } 2228 2229 /** 2230 * Return the current {@link CellLayout}, correctly picking the destination 2231 * screen while a scroll is in progress. 2232 */ 2233 private CellLayout getCurrentDropLayout() { 2234 // if we're currently small, use findMatchingPageForDragOver instead 2235 if (mIsSmall) return null; 2236 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 2237 return (CellLayout) getChildAt(index); 2238 } 2239 2240 /** 2241 * Return the current CellInfo describing our current drag; this method exists 2242 * so that Launcher can sync this object with the correct info when the activity is created/ 2243 * destroyed 2244 * 2245 */ 2246 public CellLayout.CellInfo getDragInfo() { 2247 return mDragInfo; 2248 } 2249 2250 /** 2251 * Calculate the nearest cell where the given object would be dropped. 2252 */ 2253 private int[] findNearestVacantArea(int pixelX, int pixelY, 2254 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 2255 2256 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 2257 int localPixelY = pixelY - (layout.getTop() - mScrollY); 2258 2259 // Find the best target drop location 2260 return layout.findNearestVacantArea( 2261 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 2262 } 2263 2264 void setLauncher(Launcher launcher) { 2265 mLauncher = launcher; 2266 mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); 2267 2268 mCustomizationDrawer = mLauncher.findViewById(R.id.customization_drawer); 2269 if (mCustomizationDrawer != null) { 2270 mCustomizationDrawerContent = 2271 mCustomizationDrawer.findViewById(com.android.internal.R.id.tabcontent); 2272 } 2273 } 2274 2275 public void setDragController(DragController dragController) { 2276 mDragController = dragController; 2277 } 2278 2279 public void onDropCompleted(View target, boolean success) { 2280 if (success) { 2281 if (target != this && mDragInfo != null) { 2282 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 2283 cellLayout.removeView(mDragInfo.cell); 2284 if (mDragInfo.cell instanceof DropTarget) { 2285 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 2286 } 2287 // final Object tag = mDragInfo.cell.getTag(); 2288 } 2289 } else if (mDragInfo != null) { 2290 boolean animateDrop = !mWasSpringLoadedOnDragExit; 2291 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell, animateDrop); 2292 } 2293 2294 mDragOutline = null; 2295 mDragInfo = null; 2296 } 2297 2298 @Override 2299 public void onDragViewVisible() { 2300 ((View) mDragInfo.cell).setVisibility(View.GONE); 2301 } 2302 2303 public boolean isDropEnabled() { 2304 return true; 2305 } 2306 2307 @Override 2308 protected void onRestoreInstanceState(Parcelable state) { 2309 super.onRestoreInstanceState(state); 2310 Launcher.setScreen(mCurrentPage); 2311 } 2312 2313 @Override 2314 public void scrollLeft() { 2315 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2316 super.scrollLeft(); 2317 } 2318 } 2319 2320 @Override 2321 public void scrollRight() { 2322 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2323 super.scrollRight(); 2324 } 2325 } 2326 2327 @Override 2328 public void onEnterScrollArea(int direction) { 2329 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2330 mInScrollArea = true; 2331 mPendingScrollDirection = direction; 2332 2333 final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1); 2334 final CellLayout layout = (CellLayout) getChildAt(page); 2335 2336 if (layout != null) { 2337 layout.setIsDragOverlapping(true); 2338 2339 if (mDragTargetLayout != null) { 2340 mDragTargetLayout.onDragExit(); 2341 mDragTargetLayout = null; 2342 } 2343 } 2344 } 2345 } 2346 2347 private void clearAllHovers() { 2348 final int childCount = getChildCount(); 2349 for (int i = 0; i < childCount; i++) { 2350 ((CellLayout) getChildAt(i)).setIsDragOverlapping(false); 2351 } 2352 mSpringLoadedDragController.onDragExit(); 2353 } 2354 2355 @Override 2356 public void onExitScrollArea() { 2357 if (mInScrollArea) { 2358 mInScrollArea = false; 2359 mPendingScrollDirection = DragController.SCROLL_NONE; 2360 clearAllHovers(); 2361 } 2362 } 2363 2364 public Folder getFolderForTag(Object tag) { 2365 final int screenCount = getChildCount(); 2366 for (int screen = 0; screen < screenCount; screen++) { 2367 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2368 int count = currentScreen.getChildCount(); 2369 for (int i = 0; i < count; i++) { 2370 View child = currentScreen.getChildAt(i); 2371 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2372 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2373 Folder f = (Folder) child; 2374 if (f.getInfo() == tag && f.getInfo().opened) { 2375 return f; 2376 } 2377 } 2378 } 2379 } 2380 return null; 2381 } 2382 2383 public View getViewForTag(Object tag) { 2384 int screenCount = getChildCount(); 2385 for (int screen = 0; screen < screenCount; screen++) { 2386 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2387 int count = currentScreen.getChildCount(); 2388 for (int i = 0; i < count; i++) { 2389 View child = currentScreen.getChildAt(i); 2390 if (child.getTag() == tag) { 2391 return child; 2392 } 2393 } 2394 } 2395 return null; 2396 } 2397 2398 2399 void removeItems(final ArrayList<ApplicationInfo> apps) { 2400 final int screenCount = getChildCount(); 2401 final PackageManager manager = getContext().getPackageManager(); 2402 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2403 2404 final HashSet<String> packageNames = new HashSet<String>(); 2405 final int appCount = apps.size(); 2406 for (int i = 0; i < appCount; i++) { 2407 packageNames.add(apps.get(i).componentName.getPackageName()); 2408 } 2409 2410 for (int i = 0; i < screenCount; i++) { 2411 final CellLayout layout = (CellLayout) getChildAt(i); 2412 2413 // Avoid ANRs by treating each screen separately 2414 post(new Runnable() { 2415 public void run() { 2416 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2417 childrenToRemove.clear(); 2418 2419 int childCount = layout.getChildCount(); 2420 for (int j = 0; j < childCount; j++) { 2421 final View view = layout.getChildAt(j); 2422 Object tag = view.getTag(); 2423 2424 if (tag instanceof ShortcutInfo) { 2425 final ShortcutInfo info = (ShortcutInfo) tag; 2426 final Intent intent = info.intent; 2427 final ComponentName name = intent.getComponent(); 2428 2429 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2430 for (String packageName: packageNames) { 2431 if (packageName.equals(name.getPackageName())) { 2432 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2433 childrenToRemove.add(view); 2434 } 2435 } 2436 } 2437 } else if (tag instanceof UserFolderInfo) { 2438 final UserFolderInfo info = (UserFolderInfo) tag; 2439 final ArrayList<ShortcutInfo> contents = info.contents; 2440 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2441 final int contentsCount = contents.size(); 2442 boolean removedFromFolder = false; 2443 2444 for (int k = 0; k < contentsCount; k++) { 2445 final ShortcutInfo appInfo = contents.get(k); 2446 final Intent intent = appInfo.intent; 2447 final ComponentName name = intent.getComponent(); 2448 2449 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2450 for (String packageName: packageNames) { 2451 if (packageName.equals(name.getPackageName())) { 2452 toRemove.add(appInfo); 2453 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2454 removedFromFolder = true; 2455 } 2456 } 2457 } 2458 } 2459 2460 contents.removeAll(toRemove); 2461 if (removedFromFolder) { 2462 final Folder folder = getOpenFolder(); 2463 if (folder != null) 2464 folder.notifyDataSetChanged(); 2465 } 2466 } else if (tag instanceof LiveFolderInfo) { 2467 final LiveFolderInfo info = (LiveFolderInfo) tag; 2468 final Uri uri = info.uri; 2469 final ProviderInfo providerInfo = manager.resolveContentProvider( 2470 uri.getAuthority(), 0); 2471 2472 if (providerInfo != null) { 2473 for (String packageName: packageNames) { 2474 if (packageName.equals(providerInfo.packageName)) { 2475 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2476 childrenToRemove.add(view); 2477 } 2478 } 2479 } 2480 } else if (tag instanceof LauncherAppWidgetInfo) { 2481 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2482 final AppWidgetProviderInfo provider = 2483 widgets.getAppWidgetInfo(info.appWidgetId); 2484 if (provider != null) { 2485 for (String packageName: packageNames) { 2486 if (packageName.equals(provider.provider.getPackageName())) { 2487 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2488 childrenToRemove.add(view); 2489 } 2490 } 2491 } 2492 } 2493 } 2494 2495 childCount = childrenToRemove.size(); 2496 for (int j = 0; j < childCount; j++) { 2497 View child = childrenToRemove.get(j); 2498 layout.removeViewInLayout(child); 2499 if (child instanceof DropTarget) { 2500 mDragController.removeDropTarget((DropTarget)child); 2501 } 2502 } 2503 2504 if (childCount > 0) { 2505 layout.requestLayout(); 2506 layout.invalidate(); 2507 } 2508 } 2509 }); 2510 } 2511 } 2512 2513 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2514 final int screenCount = getChildCount(); 2515 for (int i = 0; i < screenCount; i++) { 2516 final CellLayout layout = (CellLayout) getChildAt(i); 2517 int childCount = layout.getChildCount(); 2518 for (int j = 0; j < childCount; j++) { 2519 final View view = layout.getChildAt(j); 2520 Object tag = view.getTag(); 2521 if (tag instanceof ShortcutInfo) { 2522 ShortcutInfo info = (ShortcutInfo)tag; 2523 // We need to check for ACTION_MAIN otherwise getComponent() might 2524 // return null for some shortcuts (for instance, for shortcuts to 2525 // web pages.) 2526 final Intent intent = info.intent; 2527 final ComponentName name = intent.getComponent(); 2528 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2529 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2530 final int appCount = apps.size(); 2531 for (int k = 0; k < appCount; k++) { 2532 ApplicationInfo app = apps.get(k); 2533 if (app.componentName.equals(name)) { 2534 info.setIcon(mIconCache.getIcon(info.intent)); 2535 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2536 new FastBitmapDrawable(info.getIcon(mIconCache)), 2537 null, null); 2538 } 2539 } 2540 } 2541 } 2542 } 2543 } 2544 } 2545 2546 void moveToDefaultScreen(boolean animate) { 2547 if (mIsSmall || mIsInUnshrinkAnimation) { 2548 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2549 } else if (animate) { 2550 snapToPage(mDefaultPage); 2551 } else { 2552 setCurrentPage(mDefaultPage); 2553 } 2554 getChildAt(mDefaultPage).requestFocus(); 2555 } 2556 2557 void setIndicators(Drawable previous, Drawable next) { 2558 mPreviousIndicator = previous; 2559 mNextIndicator = next; 2560 previous.setLevel(mCurrentPage); 2561 next.setLevel(mCurrentPage); 2562 } 2563 2564 @Override 2565 public void syncPages() { 2566 } 2567 2568 @Override 2569 public void syncPageItems(int page) { 2570 } 2571 2572} 2573