Workspace.java revision 61033d3d86fcae1f654f3fbfc9979d131e265d76
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 java.util.ArrayList; 20import java.util.HashSet; 21import java.util.List; 22 23import android.R.integer; 24import android.animation.Animator; 25import android.animation.Animator.AnimatorListener; 26import android.animation.AnimatorSet; 27import android.animation.ObjectAnimator; 28import android.animation.PropertyValuesHolder; 29import android.animation.TimeInterpolator; 30import android.animation.ValueAnimator; 31import android.animation.ValueAnimator.AnimatorUpdateListener; 32import android.app.AlertDialog; 33import android.app.WallpaperManager; 34import android.appwidget.AppWidgetManager; 35import android.appwidget.AppWidgetProviderInfo; 36import android.content.ClipData; 37import android.content.ClipDescription; 38import android.content.ComponentName; 39import android.content.Context; 40import android.content.Intent; 41import android.content.pm.PackageManager; 42import android.content.pm.ProviderInfo; 43import android.content.res.Resources; 44import android.content.res.TypedArray; 45import android.graphics.Bitmap; 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 com.android.launcher.R; 68import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData; 69 70/** 71 * The workspace is a wide area with a wallpaper and a finite number of pages. 72 * Each page contains a number of icons, folders or widgets the user can 73 * interact with. A workspace is meant to be used with a fixed width only. 74 */ 75public class Workspace extends SmoothPagedView 76 implements DropTarget, DragSource, DragScroller, View.OnTouchListener { 77 @SuppressWarnings({"UnusedDeclaration"}) 78 private static final String TAG = "Launcher.Workspace"; 79 80 // This is how much the workspace shrinks when we enter all apps or 81 // customization mode 82 private static final float SHRINK_FACTOR = 0.16f; 83 84 // Y rotation to apply to the workspace screens 85 private static final float WORKSPACE_ROTATION = 12.5f; 86 87 // These are extra scale factors to apply to the mini home screens 88 // so as to achieve the desired transform 89 private static final float EXTRA_SCALE_FACTOR_0 = 0.972f; 90 private static final float EXTRA_SCALE_FACTOR_1 = 1.0f; 91 private static final float EXTRA_SCALE_FACTOR_2 = 1.10f; 92 93 private static final int BACKGROUND_FADE_OUT_DELAY = 300; 94 private static final int BACKGROUND_FADE_OUT_DURATION = 300; 95 private static final int BACKGROUND_FADE_IN_DURATION = 100; 96 97 // These animators are used to fade the background 98 private ObjectAnimator mBackgroundFadeInAnimation; 99 private ObjectAnimator mBackgroundFadeOutAnimation; 100 private float mBackgroundAlpha = 0; 101 102 private final WallpaperManager mWallpaperManager; 103 104 private int mDefaultPage; 105 106 private boolean mPageMoving = false; 107 108 /** 109 * CellInfo for the cell that is currently being dragged 110 */ 111 private CellLayout.CellInfo mDragInfo; 112 113 /** 114 * Target drop area calculated during last acceptDrop call. 115 */ 116 private int[] mTargetCell = null; 117 118 /** 119 * The CellLayout that is currently being dragged over 120 */ 121 private CellLayout mDragTargetLayout = null; 122 123 private Launcher mLauncher; 124 private IconCache mIconCache; 125 private DragController mDragController; 126 127 // These are temporary variables to prevent having to allocate a new object just to 128 // return an (x, y) value from helper functions. Do NOT use them to maintain other state. 129 private int[] mTempCell = new int[2]; 130 private int[] mTempEstimate = new int[2]; 131 private float[] mTempOriginXY = new float[2]; 132 private float[] mTempDragCoordinates = new float[2]; 133 private float[] mTempTouchCoordinates = new float[2]; 134 private float[] mTempCellLayoutCenterCoordinates = new float[2]; 135 private float[] mTempDragBottomRightCoordinates = new float[2]; 136 private Matrix mTempInverseMatrix = new Matrix(); 137 138 private static final int DEFAULT_CELL_COUNT_X = 4; 139 private static final int DEFAULT_CELL_COUNT_Y = 4; 140 141 private Drawable mPreviousIndicator; 142 private Drawable mNextIndicator; 143 144 // State variable that indicates whether the pages are small (ie when you're 145 // in all apps or customize mode) 146 private boolean mIsSmall = false; 147 private boolean mIsInUnshrinkAnimation = false; 148 private AnimatorListener mUnshrinkAnimationListener; 149 private enum ShrinkPosition { 150 SHRINK_TO_TOP, SHRINK_TO_MIDDLE, SHRINK_TO_BOTTOM_HIDDEN, SHRINK_TO_BOTTOM_VISIBLE }; 151 private ShrinkPosition mShrunkenState; 152 private boolean mWaitingToShrink = false; 153 private ShrinkPosition mWaitingToShrinkPosition; 154 private AnimatorSet mAnimator; 155 156 private boolean mInScrollArea = false; 157 private boolean mInDragMode = false; 158 159 private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper(); 160 private Bitmap mDragOutline = null; 161 private final Rect mTempRect = new Rect(); 162 private final int[] mTempXY = new int[2]; 163 164 private ValueAnimator mDropAnim = null; 165 private TimeInterpolator mQuintEaseOutInterpolator = new DecelerateInterpolator(2.5f); 166 private View mDropView = null; 167 private int[] mDropViewPos = new int[] { -1, -1 }; 168 169 // Paint used to draw external drop outline 170 private final Paint mExternalDragOutlinePaint = new Paint(); 171 172 /** Used to trigger an animation as soon as the workspace stops scrolling. */ 173 private Animator mAnimOnPageEndMoving = null; 174 175 /** 176 * Used to inflate the Workspace from XML. 177 * 178 * @param context The application's context. 179 * @param attrs The attributes set containing the Workspace's customization values. 180 */ 181 public Workspace(Context context, AttributeSet attrs) { 182 this(context, attrs, 0); 183 } 184 185 /** 186 * Used to inflate the Workspace from XML. 187 * 188 * @param context The application's context. 189 * @param attrs The attributes set containing the Workspace's customization values. 190 * @param defStyle Unused. 191 */ 192 public Workspace(Context context, AttributeSet attrs, int defStyle) { 193 super(context, attrs, defStyle); 194 mContentIsRefreshable = false; 195 196 if (!LauncherApplication.isScreenXLarge()) { 197 mFadeInAdjacentScreens = false; 198 } 199 200 mWallpaperManager = WallpaperManager.getInstance(context); 201 202 TypedArray a = context.obtainStyledAttributes(attrs, 203 R.styleable.Workspace, defStyle, 0); 204 int cellCountX = a.getInt(R.styleable.Workspace_cellCountX, DEFAULT_CELL_COUNT_X); 205 int cellCountY = a.getInt(R.styleable.Workspace_cellCountY, DEFAULT_CELL_COUNT_Y); 206 mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); 207 a.recycle(); 208 209 LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY); 210 setHapticFeedbackEnabled(false); 211 212 initWorkspace(); 213 } 214 215 /** 216 * Initializes various states for this workspace. 217 */ 218 protected void initWorkspace() { 219 Context context = getContext(); 220 mCurrentPage = mDefaultPage; 221 Launcher.setScreen(mCurrentPage); 222 LauncherApplication app = (LauncherApplication)context.getApplicationContext(); 223 mIconCache = app.getIconCache(); 224 mExternalDragOutlinePaint.setAntiAlias(true); 225 setWillNotDraw(false); 226 227 mUnshrinkAnimationListener = new LauncherAnimatorListenerAdapter() { 228 @Override 229 public void onAnimationStart(Animator animation) { 230 mIsInUnshrinkAnimation = true; 231 } 232 @Override 233 public void onAnimationEndOrCancel(Animator animation) { 234 mIsInUnshrinkAnimation = false; 235 } 236 }; 237 mSnapVelocity = 600; 238 } 239 240 @Override 241 protected int getScrollMode() { 242 if (LauncherApplication.isScreenXLarge()) { 243 return SmoothPagedView.QUINTIC_MODE; 244 } else { 245 return SmoothPagedView.OVERSHOOT_MODE; 246 } 247 } 248 249 @Override 250 public void addView(View child, int index, LayoutParams params) { 251 if (!(child instanceof CellLayout)) { 252 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 253 } 254 ((CellLayout) child).setOnInterceptTouchListener(this); 255 super.addView(child, index, params); 256 } 257 258 @Override 259 public void addView(View child) { 260 if (!(child instanceof CellLayout)) { 261 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 262 } 263 ((CellLayout) child).setOnInterceptTouchListener(this); 264 super.addView(child); 265 } 266 267 @Override 268 public void addView(View child, int index) { 269 if (!(child instanceof CellLayout)) { 270 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 271 } 272 ((CellLayout) child).setOnInterceptTouchListener(this); 273 super.addView(child, index); 274 } 275 276 @Override 277 public void addView(View child, int width, int height) { 278 if (!(child instanceof CellLayout)) { 279 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 280 } 281 ((CellLayout) child).setOnInterceptTouchListener(this); 282 super.addView(child, width, height); 283 } 284 285 @Override 286 public void addView(View child, LayoutParams params) { 287 if (!(child instanceof CellLayout)) { 288 throw new IllegalArgumentException("A Workspace can only have CellLayout children."); 289 } 290 ((CellLayout) child).setOnInterceptTouchListener(this); 291 super.addView(child, params); 292 } 293 294 /** 295 * @return The open folder on the current screen, or null if there is none 296 */ 297 Folder getOpenFolder() { 298 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 299 int count = currentPage.getChildCount(); 300 for (int i = 0; i < count; i++) { 301 View child = currentPage.getChildAt(i); 302 if (child instanceof Folder) { 303 Folder folder = (Folder) child; 304 if (folder.getInfo().opened) 305 return folder; 306 } 307 } 308 return null; 309 } 310 311 ArrayList<Folder> getOpenFolders() { 312 final int screenCount = getChildCount(); 313 ArrayList<Folder> folders = new ArrayList<Folder>(screenCount); 314 315 for (int screen = 0; screen < screenCount; screen++) { 316 CellLayout currentPage = (CellLayout) getChildAt(screen); 317 int count = currentPage.getChildCount(); 318 for (int i = 0; i < count; i++) { 319 View child = currentPage.getChildAt(i); 320 if (child instanceof Folder) { 321 Folder folder = (Folder) child; 322 if (folder.getInfo().opened) 323 folders.add(folder); 324 break; 325 } 326 } 327 } 328 return folders; 329 } 330 331 boolean isDefaultPageShowing() { 332 return mCurrentPage == mDefaultPage; 333 } 334 335 /** 336 * Sets the current screen. 337 * 338 * @param currentPage 339 */ 340 @Override 341 void setCurrentPage(int currentPage) { 342 super.setCurrentPage(currentPage); 343 updateWallpaperOffset(mScrollX); 344 } 345 346 /** 347 * Adds the specified child in the specified screen. The position and dimension of 348 * the child are defined by x, y, spanX and spanY. 349 * 350 * @param child The child to add in one of the workspace's screens. 351 * @param screen The screen in which to add the child. 352 * @param x The X position of the child in the screen's grid. 353 * @param y The Y position of the child in the screen's grid. 354 * @param spanX The number of cells spanned horizontally by the child. 355 * @param spanY The number of cells spanned vertically by the child. 356 */ 357 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { 358 addInScreen(child, screen, x, y, spanX, spanY, false); 359 } 360 361 void addInFullScreen(View child, int screen) { 362 addInScreen(child, screen, 0, 0, -1, -1); 363 } 364 365 /** 366 * Adds the specified child in the specified screen. The position and dimension of 367 * the child are defined by x, y, spanX and spanY. 368 * 369 * @param child The child to add in one of the workspace's screens. 370 * @param screen The screen in which to add the child. 371 * @param x The X position of the child in the screen's grid. 372 * @param y The Y position of the child in the screen's grid. 373 * @param spanX The number of cells spanned horizontally by the child. 374 * @param spanY The number of cells spanned vertically by the child. 375 * @param insert When true, the child is inserted at the beginning of the children list. 376 */ 377 void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { 378 if (screen < 0 || screen >= getChildCount()) { 379 Log.e(TAG, "The screen must be >= 0 and < " + getChildCount() 380 + " (was " + screen + "); skipping child"); 381 return; 382 } 383 384 final CellLayout group = (CellLayout) getChildAt(screen); 385 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 386 if (lp == null) { 387 lp = new CellLayout.LayoutParams(x, y, spanX, spanY); 388 } else { 389 lp.cellX = x; 390 lp.cellY = y; 391 lp.cellHSpan = spanX; 392 lp.cellVSpan = spanY; 393 } 394 395 // Get the canonical child id to uniquely represent this view in this screen 396 int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY); 397 boolean markCellsAsOccupied = !(child instanceof Folder); 398 if (!group.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { 399 // TODO: This branch occurs when the workspace is adding views 400 // outside of the defined grid 401 // maybe we should be deleting these items from the LauncherModel? 402 Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout"); 403 } 404 405 if (!(child instanceof Folder)) { 406 child.setHapticFeedbackEnabled(false); 407 child.setOnLongClickListener(mLongClickListener); 408 } 409 if (child instanceof DropTarget) { 410 mDragController.addDropTarget((DropTarget) child); 411 } 412 } 413 414 public boolean onTouch(View v, MotionEvent event) { 415 // this is an intercepted event being forwarded from a cell layout 416 if (mIsSmall || mIsInUnshrinkAnimation) { 417 mLauncher.onWorkspaceClick((CellLayout) v); 418 return true; 419 } else if (!mPageMoving) { 420 if (v == getChildAt(mCurrentPage - 1)) { 421 snapToPage(mCurrentPage - 1); 422 return true; 423 } else if (v == getChildAt(mCurrentPage + 1)) { 424 snapToPage(mCurrentPage + 1); 425 return true; 426 } 427 } 428 return false; 429 } 430 431 protected void onWindowVisibilityChanged (int visibility) { 432 mLauncher.onWindowVisibilityChanged(visibility); 433 } 434 435 @Override 436 public boolean dispatchUnhandledMove(View focused, int direction) { 437 if (mIsSmall || mIsInUnshrinkAnimation) { 438 // when the home screens are shrunken, shouldn't allow side-scrolling 439 return false; 440 } 441 return super.dispatchUnhandledMove(focused, direction); 442 } 443 444 @Override 445 public boolean onInterceptTouchEvent(MotionEvent ev) { 446 if (mIsSmall || mIsInUnshrinkAnimation) { 447 // when the home screens are shrunken, shouldn't allow side-scrolling 448 return false; 449 } 450 return super.onInterceptTouchEvent(ev); 451 } 452 453 @Override 454 protected void determineScrollingStart(MotionEvent ev) { 455 if (!mIsSmall && !mIsInUnshrinkAnimation) super.determineScrollingStart(ev); 456 } 457 458 protected void onPageBeginMoving() { 459 if (mNextPage != INVALID_PAGE) { 460 // we're snapping to a particular screen 461 enableChildrenCache(mCurrentPage, mNextPage); 462 } else { 463 // this is when user is actively dragging a particular screen, they might 464 // swipe it either left or right (but we won't advance by more than one screen) 465 enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); 466 } 467 showOutlines(); 468 mPageMoving = true; 469 } 470 471 protected void onPageEndMoving() { 472 clearChildrenCache(); 473 // Hide the outlines, as long as we're not dragging 474 if (!mDragController.dragging()) { 475 hideOutlines(); 476 } 477 // Check for an animation that's waiting to be started 478 if (mAnimOnPageEndMoving != null) { 479 mAnimOnPageEndMoving.start(); 480 mAnimOnPageEndMoving = null; 481 } 482 483 mPageMoving = false; 484 } 485 486 @Override 487 protected void notifyPageSwitchListener() { 488 super.notifyPageSwitchListener(); 489 490 if (mPreviousIndicator != null) { 491 // if we know the next page, we show the indication for it right away; it looks 492 // weird if the indicators are lagging 493 int page = mNextPage; 494 if (page == INVALID_PAGE) { 495 page = mCurrentPage; 496 } 497 mPreviousIndicator.setLevel(page); 498 mNextIndicator.setLevel(page); 499 } 500 Launcher.setScreen(mCurrentPage); 501 }; 502 503 private void updateWallpaperOffset() { 504 updateWallpaperOffset(getChildAt(getChildCount() - 1).getRight() - (mRight - mLeft)); 505 } 506 507 private void updateWallpaperOffset(int scrollRange) { 508 final boolean isStaticWallpaper = (mWallpaperManager != null) && 509 (mWallpaperManager.getWallpaperInfo() == null); 510 if (LauncherApplication.isScreenXLarge() && !isStaticWallpaper) { 511 IBinder token = getWindowToken(); 512 if (token != null) { 513 mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 0 ); 514 mWallpaperManager.setWallpaperOffsets(getWindowToken(), 515 Math.max(0.f, Math.min(mScrollX/(float)scrollRange, 1.f)), 0); 516 } 517 } 518 } 519 520 public void showOutlines() { 521 if (!mIsSmall && !mIsInUnshrinkAnimation) { 522 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 523 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 524 mBackgroundFadeInAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 1.0f); 525 mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION); 526 mBackgroundFadeInAnimation.start(); 527 } 528 } 529 530 public void hideOutlines() { 531 if (!mIsSmall && !mIsInUnshrinkAnimation) { 532 if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel(); 533 if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel(); 534 mBackgroundFadeOutAnimation = ObjectAnimator.ofFloat(this, "backgroundAlpha", 0.0f); 535 mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); 536 mBackgroundFadeOutAnimation.setStartDelay(BACKGROUND_FADE_OUT_DELAY); 537 mBackgroundFadeOutAnimation.start(); 538 } 539 } 540 541 public void setBackgroundAlpha(float alpha) { 542 mBackgroundAlpha = alpha; 543 for (int i = 0; i < getChildCount(); i++) { 544 CellLayout cl = (CellLayout) getChildAt(i); 545 cl.setBackgroundAlpha(alpha); 546 } 547 } 548 549 public float getBackgroundAlpha() { 550 return mBackgroundAlpha; 551 } 552 553 @Override 554 protected void screenScrolled(int screenCenter) { 555 final int halfScreenSize = getMeasuredWidth() / 2; 556 for (int i = 0; i < getChildCount(); i++) { 557 CellLayout cl = (CellLayout) getChildAt(i); 558 if (cl != null) { 559 int totalDistance = cl.getMeasuredWidth() + mPageSpacing; 560 int delta = screenCenter - (getChildOffset(i) - 561 getRelativeChildOffset(i) + halfScreenSize); 562 563 float scrollProgress = delta / (totalDistance * 1.0f); 564 scrollProgress = Math.min(scrollProgress, 1.0f); 565 scrollProgress = Math.max(scrollProgress, -1.0f); 566 567 cl.setBackgroundAlphaMultiplier(Math.abs(scrollProgress)); 568 569 float rotation = WORKSPACE_ROTATION * scrollProgress; 570 cl.setRotationY(rotation); 571 } 572 } 573 } 574 575 protected void onAttachedToWindow() { 576 super.onAttachedToWindow(); 577 computeScroll(); 578 mDragController.setWindowToken(getWindowToken()); 579 } 580 581 @Override 582 protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 583 super.onLayout(changed, left, top, right, bottom); 584 585 // if shrinkToBottom() is called on initialization, it has to be deferred 586 // until after the first call to onLayout so that it has the correct width 587 if (mWaitingToShrink) { 588 shrink(mWaitingToShrinkPosition, false); 589 mWaitingToShrink = false; 590 } 591 592 if (LauncherApplication.isInPlaceRotationEnabled()) { 593 // When the device is rotated, the scroll position of the current screen 594 // needs to be refreshed 595 setCurrentPage(getCurrentPage()); 596 } 597 } 598 599 @Override 600 protected void dispatchDraw(Canvas canvas) { 601 if (mIsSmall || mIsInUnshrinkAnimation) { 602 // Draw all the workspaces if we're small 603 final int pageCount = getChildCount(); 604 final long drawingTime = getDrawingTime(); 605 for (int i = 0; i < pageCount; i++) { 606 final View page = (View) getChildAt(i); 607 608 drawChild(canvas, page, drawingTime); 609 } 610 } else { 611 super.dispatchDraw(canvas); 612 613 final int width = getWidth(); 614 final int height = getHeight(); 615 616 // In portrait orientation, draw the glowing edge when dragging to adjacent screens 617 if (mInScrollArea && (height > width)) { 618 final int pageHeight = getChildAt(0).getHeight(); 619 620 // This determines the height of the glowing edge: 90% of the page height 621 final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f); 622 623 final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1); 624 final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1); 625 626 if (leftPage != null && leftPage.getHover()) { 627 final Drawable d = getResources().getDrawable(R.drawable.page_hover_left); 628 d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding); 629 d.draw(canvas); 630 } else if (rightPage != null && rightPage.getHover()) { 631 final Drawable d = getResources().getDrawable(R.drawable.page_hover_right); 632 d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding); 633 d.draw(canvas); 634 } 635 } 636 637 if (mDropView != null) { 638 // We are animating an item that was just dropped on the home screen. 639 // Render its View in the current animation position. 640 canvas.save(Canvas.MATRIX_SAVE_FLAG); 641 final int xPos = mDropViewPos[0] - mDropView.getScrollX(); 642 final int yPos = mDropViewPos[1] - mDropView.getScrollY(); 643 canvas.translate(xPos, yPos); 644 mDropView.draw(canvas); 645 canvas.restore(); 646 } 647 } 648 } 649 650 @Override 651 protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { 652 if (!mLauncher.isAllAppsVisible()) { 653 final Folder openFolder = getOpenFolder(); 654 if (openFolder != null) { 655 return openFolder.requestFocus(direction, previouslyFocusedRect); 656 } else { 657 return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); 658 } 659 } 660 return false; 661 } 662 663 @Override 664 public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { 665 if (!mLauncher.isAllAppsVisible()) { 666 final Folder openFolder = getOpenFolder(); 667 if (openFolder != null) { 668 openFolder.addFocusables(views, direction); 669 } else { 670 super.addFocusables(views, direction, focusableMode); 671 } 672 } 673 } 674 675 @Override 676 public boolean dispatchTouchEvent(MotionEvent ev) { 677 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 678 // (In XLarge mode, the workspace is shrunken below all apps, and responds to taps 679 // ie when you click on a mini-screen, it zooms back to that screen) 680 if (!LauncherApplication.isScreenXLarge() && mLauncher.isAllAppsVisible()) { 681 return false; 682 } 683 } 684 return super.dispatchTouchEvent(ev); 685 } 686 687 void enableChildrenCache(int fromPage, int toPage) { 688 if (fromPage > toPage) { 689 final int temp = fromPage; 690 fromPage = toPage; 691 toPage = temp; 692 } 693 694 final int screenCount = getChildCount(); 695 696 fromPage = Math.max(fromPage, 0); 697 toPage = Math.min(toPage, screenCount - 1); 698 699 for (int i = fromPage; i <= toPage; i++) { 700 final CellLayout layout = (CellLayout) getChildAt(i); 701 layout.setChildrenDrawnWithCacheEnabled(true); 702 layout.setChildrenDrawingCacheEnabled(true); 703 } 704 } 705 706 void clearChildrenCache() { 707 final int screenCount = getChildCount(); 708 for (int i = 0; i < screenCount; i++) { 709 final CellLayout layout = (CellLayout) getChildAt(i); 710 layout.setChildrenDrawnWithCacheEnabled(false); 711 } 712 } 713 714 @Override 715 public boolean onTouchEvent(MotionEvent ev) { 716 if (mLauncher.isAllAppsVisible()) { 717 // Cancel any scrolling that is in progress. 718 if (!mScroller.isFinished()) { 719 mScroller.abortAnimation(); 720 } 721 setCurrentPage(mCurrentPage); 722 return false; // We don't want the events. Let them fall through to the all apps view. 723 } 724 725 return super.onTouchEvent(ev); 726 } 727 728 public boolean isSmall() { 729 return mIsSmall; 730 } 731 732 void shrinkToTop(boolean animated) { 733 shrink(ShrinkPosition.SHRINK_TO_TOP, animated); 734 } 735 736 void shrinkToMiddle() { 737 shrink(ShrinkPosition.SHRINK_TO_MIDDLE, true); 738 } 739 740 void shrinkToBottom() { 741 shrinkToBottom(true); 742 } 743 744 void shrinkToBottom(boolean animated) { 745 shrink(ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN, animated); 746 } 747 748 private float getYScaleForScreen(int screen) { 749 int x = Math.abs(screen - 2); 750 751 // TODO: This should be generalized for use with arbitrary rotation angles. 752 switch(x) { 753 case 0: return EXTRA_SCALE_FACTOR_0; 754 case 1: return EXTRA_SCALE_FACTOR_1; 755 case 2: return EXTRA_SCALE_FACTOR_2; 756 } 757 return 1.0f; 758 } 759 760 // we use this to shrink the workspace for the all apps view and the customize view 761 private void shrink(ShrinkPosition shrinkPosition, boolean animated) { 762 if (mFirstLayout) { 763 // (mFirstLayout == "first layout has not happened yet") 764 // if we get a call to shrink() as part of our initialization (for example, if 765 // Launcher is started in All Apps mode) then we need to wait for a layout call 766 // to get our width so we can layout the mini-screen views correctly 767 mWaitingToShrink = true; 768 mWaitingToShrinkPosition = shrinkPosition; 769 return; 770 } 771 mIsSmall = true; 772 mShrunkenState = shrinkPosition; 773 774 // Stop any scrolling, move to the current page right away 775 setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage); 776 updateWhichPagesAcceptDrops(mShrunkenState); 777 778 // we intercept and reject all touch events when we're small, so be sure to reset the state 779 mTouchState = TOUCH_STATE_REST; 780 mActivePointerId = INVALID_POINTER; 781 782 CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); 783 if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) { 784 currentPage.setBackgroundAlpha(0.0f); 785 } 786 currentPage.setBackgroundAlphaMultiplier(1.0f); 787 788 final Resources res = getResources(); 789 final int screenWidth = getWidth(); 790 final int screenHeight = getHeight(); 791 792 // Making the assumption that all pages have the same width as the 0th 793 final int pageWidth = getChildAt(0).getMeasuredWidth(); 794 final int pageHeight = getChildAt(0).getMeasuredHeight(); 795 796 final int scaledPageWidth = (int) (SHRINK_FACTOR * pageWidth); 797 final int scaledPageHeight = (int) (SHRINK_FACTOR * pageHeight); 798 final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing); 799 800 final int screenCount = getChildCount(); 801 float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing; 802 803 boolean isPortrait = getMeasuredHeight() > getMeasuredWidth(); 804 float newY = (isPortrait ? 805 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) : 806 getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape)); 807 float finalAlpha = 1.0f; 808 float extraShrinkFactor = 1.0f; 809 if (shrinkPosition == ShrinkPosition.SHRINK_TO_BOTTOM_VISIBLE) { 810 newY = screenHeight - newY - scaledPageHeight; 811 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN) { 812 813 // We shrink and disappear to nothing in the case of all apps 814 // (which is when we shrink to the bottom) 815 newY = screenHeight - newY - scaledPageHeight; 816 finalAlpha = 0.25f; 817 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_MIDDLE) { 818 newY = screenHeight / 2 - scaledPageHeight / 2; 819 finalAlpha = 1.0f; 820 } else if (shrinkPosition == ShrinkPosition.SHRINK_TO_TOP) { 821 newY = (isPortrait ? 822 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginPortrait) : 823 getResources().getDimension(R.dimen.customizeSmallScreenVerticalMarginLandscape)); 824 } 825 826 // We animate all the screens to the centered position in workspace 827 // At the same time, the screens become greyed/dimmed 828 829 // newX is initialized to the left-most position of the centered screens 830 float newX = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2; 831 832 // We are going to scale about the center of the view, so we need to adjust the positions 833 // of the views accordingly 834 newX -= (pageWidth - scaledPageWidth) / 2.0f; 835 newY -= (pageHeight - scaledPageHeight) / 2.0f; 836 837 if (mAnimator != null) { 838 mAnimator.cancel(); 839 } 840 mAnimator = new AnimatorSet(); 841 for (int i = 0; i < screenCount; i++) { 842 CellLayout cl = (CellLayout) getChildAt(i); 843 844 float rotation = (-i + 2) * WORKSPACE_ROTATION; 845 float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f)); 846 float rotationScaleY = getYScaleForScreen(i); 847 848 if (animated) { 849 final int duration = res.getInteger(R.integer.config_workspaceShrinkTime); 850 851 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 852 PropertyValuesHolder.ofFloat("x", newX), 853 PropertyValuesHolder.ofFloat("y", newY), 854 PropertyValuesHolder.ofFloat("scaleX", 855 SHRINK_FACTOR * rotationScaleX * extraShrinkFactor), 856 PropertyValuesHolder.ofFloat("scaleY", 857 SHRINK_FACTOR * rotationScaleY * extraShrinkFactor), 858 PropertyValuesHolder.ofFloat("backgroundAlpha", finalAlpha), 859 PropertyValuesHolder.ofFloat("alpha", finalAlpha), 860 PropertyValuesHolder.ofFloat("rotationY", rotation)); 861 862 animWithInterpolator.setDuration(duration); 863 animWithInterpolator.setInterpolator(mZoomOutInterpolator); 864 mAnimator.playTogether(animWithInterpolator); 865 } else { 866 cl.setX((int)newX); 867 cl.setY((int)newY); 868 cl.setScaleX(SHRINK_FACTOR * rotationScaleX * extraShrinkFactor); 869 cl.setScaleY(SHRINK_FACTOR * rotationScaleY * extraShrinkFactor); 870 cl.setBackgroundAlpha(finalAlpha); 871 cl.setAlpha(finalAlpha); 872 cl.setRotationY(rotation); 873 } 874 // increment newX for the next screen 875 newX += scaledPageWidth + extraScaledSpacing; 876 } 877 if (animated) { 878 mAnimator.start(); 879 } 880 setChildrenDrawnWithCacheEnabled(true); 881 } 882 883 /* 884 * This interpolator emulates the rate at which the perceived scale of an object changes 885 * as its distance from a camera increases. When this interpolator is applied to a scale 886 * animation on a view, it evokes the sense that the object is shrinking due to moving away 887 * from the camera. 888 */ 889 static class ZInterpolator implements TimeInterpolator { 890 private float focalLength; 891 892 public ZInterpolator(float foc) { 893 focalLength = foc; 894 } 895 896 public float getInterpolation(float input) { 897 return (1.0f - focalLength / (focalLength + input)) / 898 (1.0f - focalLength / (focalLength + 1.0f)); 899 } 900 } 901 902 /* 903 * The exact reverse of ZInterpolator. 904 */ 905 static class InverseZInterpolator implements TimeInterpolator { 906 private ZInterpolator zInterpolator; 907 public InverseZInterpolator(float foc) { 908 zInterpolator = new ZInterpolator(foc); 909 } 910 public float getInterpolation(float input) { 911 return 1 - zInterpolator.getInterpolation(1 - input); 912 } 913 } 914 915 /* 916 * ZInterpolator compounded with an ease-out. 917 */ 918 static class ZoomOutInterpolator implements TimeInterpolator { 919 private final ZInterpolator zInterpolator = new ZInterpolator(0.2f); 920 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.5f); 921 922 public float getInterpolation(float input) { 923 return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); 924 } 925 } 926 927 /* 928 * InvereZInterpolator compounded with an ease-out. 929 */ 930 static class ZoomInInterpolator implements TimeInterpolator { 931 private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); 932 private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); 933 934 public float getInterpolation(float input) { 935 return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); 936 } 937 } 938 939 private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator(); 940 private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); 941 942 private void updateWhichPagesAcceptDrops(ShrinkPosition state) { 943 updateWhichPagesAcceptDropsHelper(state, false, 1, 1); 944 } 945 946 private void updateWhichPagesAcceptDropsDuringDrag(ShrinkPosition state, int spanX, int spanY) { 947 updateWhichPagesAcceptDropsHelper(state, true, spanX, spanY); 948 } 949 950 private void updateWhichPagesAcceptDropsHelper( 951 ShrinkPosition state, boolean isDragHappening, int spanX, int spanY) { 952 final int screenCount = getChildCount(); 953 for (int i = 0; i < screenCount; i++) { 954 CellLayout cl = (CellLayout) getChildAt(i); 955 956 switch (state) { 957 case SHRINK_TO_TOP: 958 if (!isDragHappening) { 959 boolean showDropHighlight = i == mCurrentPage; 960 cl.setAcceptsDrops(showDropHighlight); 961 break; 962 } 963 // otherwise, fall through below and mark non-full screens as accepting drops 964 case SHRINK_TO_BOTTOM_HIDDEN: 965 case SHRINK_TO_BOTTOM_VISIBLE: 966 if (!isDragHappening) { 967 // even if a drag isn't happening, we don't want to show a screen as 968 // accepting drops if it doesn't have at least one free cell 969 spanX = 1; 970 spanY = 1; 971 } 972 // the page accepts drops if we can find at least one empty spot 973 cl.setAcceptsDrops(cl.findCellForSpan(null, spanX, spanY)); 974 break; 975 default: 976 throw new RuntimeException( 977 "updateWhichPagesAcceptDropsHelper passed an unhandled ShrinkPosition"); 978 } 979 } 980 } 981 982 /* 983 * 984 * We call these methods (onDragStartedWithItemSpans/onDragStartedWithItemMinSize) whenever we 985 * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace 986 * 987 * These methods mark the appropriate pages as accepting drops (which alters their visual 988 * appearance) and, if the pages are hidden, makes them visible. 989 * 990 */ 991 public void onDragStartedWithItemSpans(int spanX, int spanY) { 992 updateWhichPagesAcceptDropsDuringDrag(mShrunkenState, spanX, spanY); 993 if (mShrunkenState == ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN) { 994 shrink(ShrinkPosition.SHRINK_TO_BOTTOM_VISIBLE, true); 995 } 996 } 997 998 public void onDragStartedWithItemMinSize(int minWidth, int minHeight) { 999 int[] spanXY = CellLayout.rectToCell(getResources(), minWidth, minHeight, null); 1000 onDragStartedWithItemSpans(spanXY[0], spanXY[1]); 1001 } 1002 1003 // we call this method whenever a drag and drop in Launcher finishes, even if Workspace was 1004 // never dragged over 1005 public void onDragStopped() { 1006 updateWhichPagesAcceptDrops(mShrunkenState); 1007 if (mShrunkenState == ShrinkPosition.SHRINK_TO_BOTTOM_VISIBLE) { 1008 shrink(ShrinkPosition.SHRINK_TO_BOTTOM_HIDDEN, true); 1009 } 1010 } 1011 1012 // We call this when we trigger an unshrink by clicking on the CellLayout cl 1013 public void unshrink(CellLayout clThatWasClicked) { 1014 int newCurrentPage = mCurrentPage; 1015 final int screenCount = getChildCount(); 1016 for (int i = 0; i < screenCount; i++) { 1017 if (getChildAt(i) == clThatWasClicked) { 1018 newCurrentPage = i; 1019 } 1020 } 1021 unshrink(newCurrentPage); 1022 } 1023 1024 @Override 1025 protected boolean handlePagingClicks() { 1026 return true; 1027 } 1028 1029 private void unshrink(int newCurrentPage) { 1030 if (mIsSmall) { 1031 int newX = getChildOffset(newCurrentPage) - getRelativeChildOffset(newCurrentPage); 1032 int delta = newX - mScrollX; 1033 1034 final int screenCount = getChildCount(); 1035 for (int i = 0; i < screenCount; i++) { 1036 CellLayout cl = (CellLayout) getChildAt(i); 1037 cl.setX(cl.getX() + delta); 1038 } 1039 setCurrentPage(newCurrentPage); 1040 unshrink(); 1041 } 1042 } 1043 1044 void unshrink() { 1045 unshrink(true); 1046 } 1047 1048 void unshrink(boolean animated) { 1049 if (mIsSmall) { 1050 mIsSmall = false; 1051 if (mAnimator != null) { 1052 mAnimator.cancel(); 1053 } 1054 mAnimator = new AnimatorSet(); 1055 final int screenCount = getChildCount(); 1056 1057 final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); 1058 for (int i = 0; i < screenCount; i++) { 1059 final CellLayout cl = (CellLayout)getChildAt(i); 1060 float finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f; 1061 float rotation = 0.0f; 1062 1063 if (i < mCurrentPage) { 1064 rotation = WORKSPACE_ROTATION; 1065 } else if (i > mCurrentPage) { 1066 rotation = -WORKSPACE_ROTATION; 1067 } 1068 1069 if (animated) { 1070 1071 ObjectAnimator animWithInterpolator = ObjectAnimator.ofPropertyValuesHolder(cl, 1072 PropertyValuesHolder.ofFloat("translationX", 0.0f), 1073 PropertyValuesHolder.ofFloat("translationY", 0.0f), 1074 PropertyValuesHolder.ofFloat("scaleX", 1.0f), 1075 PropertyValuesHolder.ofFloat("scaleY", 1.0f), 1076 PropertyValuesHolder.ofFloat("backgroundAlpha", 0.0f), 1077 PropertyValuesHolder.ofFloat("alpha", finalAlphaValue), 1078 PropertyValuesHolder.ofFloat("rotationY", rotation)); 1079 animWithInterpolator.setDuration(duration); 1080 animWithInterpolator.setInterpolator(mZoomInInterpolator); 1081 mAnimator.playTogether(animWithInterpolator); 1082 } else { 1083 cl.setTranslationX(0.0f); 1084 cl.setTranslationY(0.0f); 1085 cl.setScaleX(1.0f); 1086 cl.setScaleY(1.0f); 1087 cl.setBackgroundAlpha(0.0f); 1088 cl.setAlpha(finalAlphaValue); 1089 cl.setRotationY(rotation); 1090 } 1091 } 1092 if (animated) { 1093 // If we call this when we're not animated, onAnimationEnd is never called on 1094 // the listener; make sure we only use the listener when we're actually animating 1095 mAnimator.addListener(mUnshrinkAnimationListener); 1096 mAnimator.start(); 1097 } 1098 } 1099 } 1100 1101 /** 1102 * Draw the View v into the given Canvas. 1103 * 1104 * @param v the view to draw 1105 * @param destCanvas the canvas to draw on 1106 * @param padding the horizontal and vertical padding to use when drawing 1107 */ 1108 private void drawDragView(View v, Canvas destCanvas, int padding) { 1109 final Rect clipRect = mTempRect; 1110 v.getDrawingRect(clipRect); 1111 1112 // For a TextView, adjust the clip rect so that we don't include the text label 1113 if (v instanceof TextView) { 1114 final TextView tv = (TextView) v; 1115 clipRect.bottom = clipRect.top + tv.getCompoundPaddingTop() - 1; 1116 } 1117 1118 // Draw the View into the bitmap. 1119 // The translate of scrollX and scrollY is necessary when drawing TextViews, because 1120 // they set scrollX and scrollY to large values to achieve centered text 1121 1122 destCanvas.save(); 1123 destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); 1124 destCanvas.clipRect(clipRect, Op.REPLACE); 1125 v.draw(destCanvas); 1126 destCanvas.restore(); 1127 } 1128 1129 /** 1130 * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. 1131 * Responsibility for the bitmap is transferred to the caller. 1132 */ 1133 private Bitmap createDragOutline(View v, Canvas canvas, int padding) { 1134 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1135 final Bitmap b = Bitmap.createBitmap( 1136 v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); 1137 1138 canvas.setBitmap(b); 1139 drawDragView(v, canvas, padding); 1140 mOutlineHelper.applyExpensiveOuterOutline(b, canvas, outlineColor, true); 1141 1142 return b; 1143 } 1144 1145 /** 1146 * Creates a drag outline to represent a drop (that we don't have the actual information for 1147 * yet). May be changed in the future to alter the drop outline slightly depending on the 1148 * clip description mime data. 1149 */ 1150 private Bitmap createExternalDragOutline(Canvas canvas, int padding) { 1151 Resources r = getResources(); 1152 final int outlineColor = r.getColor(R.color.drag_outline_color); 1153 final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width); 1154 final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height); 1155 final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius); 1156 final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f); 1157 final Bitmap b = Bitmap.createBitmap( 1158 iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888); 1159 1160 canvas.setBitmap(b); 1161 canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset), 1162 rectRadius, rectRadius, mExternalDragOutlinePaint); 1163 mOutlineHelper.applyExpensiveOuterOutline(b, canvas, outlineColor, true); 1164 1165 return b; 1166 } 1167 1168 /** 1169 * Returns a new bitmap to show when the given View is being dragged around. 1170 * Responsibility for the bitmap is transferred to the caller. 1171 */ 1172 private Bitmap createDragBitmap(View v, Canvas canvas, int padding) { 1173 final int outlineColor = getResources().getColor(R.color.drag_outline_color); 1174 final Bitmap b = Bitmap.createBitmap( 1175 mDragOutline.getWidth(), mDragOutline.getHeight(), Bitmap.Config.ARGB_8888); 1176 1177 canvas.setBitmap(b); 1178 canvas.drawBitmap(mDragOutline, 0, 0, null); 1179 drawDragView(v, canvas, padding); 1180 mOutlineHelper.applyOuterBlur(b, canvas, outlineColor); 1181 1182 return b; 1183 } 1184 1185 void startDrag(CellLayout.CellInfo cellInfo) { 1186 View child = cellInfo.cell; 1187 1188 // Make sure the drag was started by a long press as opposed to a long click. 1189 if (!child.isInTouchMode()) { 1190 return; 1191 } 1192 1193 mDragInfo = cellInfo; 1194 mDragInfo.screen = mCurrentPage; 1195 1196 CellLayout current = getCurrentDropLayout(); 1197 1198 current.onDragChild(child); 1199 child.setVisibility(View.GONE); 1200 1201 child.clearFocus(); 1202 child.setPressed(false); 1203 1204 final Canvas canvas = new Canvas(); 1205 1206 // We need to add extra padding to the bitmap to make room for the glow effect 1207 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1208 1209 // The outline is used to visualize where the item will land if dropped 1210 mDragOutline = createDragOutline(child, canvas, bitmapPadding); 1211 1212 // The drag bitmap follows the touch point around on the screen 1213 final Bitmap b = createDragBitmap(child, canvas, bitmapPadding); 1214 1215 final int bmpWidth = b.getWidth(); 1216 final int bmpHeight = b.getHeight(); 1217 child.getLocationOnScreen(mTempXY); 1218 final int screenX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2; 1219 final int screenY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2; 1220 mDragController.startDrag(b, screenX, screenY, 0, 0, bmpWidth, bmpHeight, this, 1221 child.getTag(), DragController.DRAG_ACTION_MOVE, null); 1222 b.recycle(); 1223 } 1224 1225 void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY, 1226 boolean insertAtFirst, int intersectX, int intersectY) { 1227 final CellLayout cellLayout = (CellLayout) getChildAt(screen); 1228 View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); 1229 1230 final int[] cellXY = new int[2]; 1231 cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); 1232 addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst); 1233 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1234 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1235 cellXY[0], cellXY[1]); 1236 } 1237 1238 private void setPositionForDropAnimation( 1239 View dragView, int dragViewX, int dragViewY, View parent, View child) { 1240 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 1241 1242 // Based on the position of the drag view, find the top left of the original view 1243 int viewX = dragViewX + (dragView.getWidth() - child.getWidth()) / 2; 1244 int viewY = dragViewY + (dragView.getHeight() - child.getHeight()) / 2; 1245 viewX -= getResources().getInteger(R.integer.config_dragViewOffsetX); 1246 viewY -= getResources().getInteger(R.integer.config_dragViewOffsetY); 1247 1248 // Set its old pos (in the new parent's coordinates); it will be animated 1249 // in animateViewIntoPosition after the next layout pass 1250 lp.oldX = viewX - (parent.getLeft() - mScrollX); 1251 lp.oldY = viewY - (parent.getTop() - mScrollY); 1252 } 1253 1254 public void animateViewIntoPosition(final View view) { 1255 final CellLayout parent = (CellLayout) view.getParent(); 1256 final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1257 1258 // Convert the animation params to be relative to the Workspace, not the CellLayout 1259 final int fromX = lp.oldX + parent.getLeft(); 1260 final int fromY = lp.oldY + parent.getTop(); 1261 1262 final int dx = lp.x - lp.oldX; 1263 final int dy = lp.y - lp.oldY; 1264 1265 // Calculate the duration of the animation based on the object's distance 1266 final float dist = (float) Math.sqrt(dx*dx + dy*dy); 1267 final Resources res = getResources(); 1268 final float maxDist = (float) res.getInteger(R.integer.config_dropAnimMaxDist); 1269 int duration = res.getInteger(R.integer.config_dropAnimMaxDuration); 1270 if (dist < maxDist) { 1271 duration *= mQuintEaseOutInterpolator.getInterpolation(dist / maxDist); 1272 } 1273 1274 if (mDropAnim != null) { 1275 // This should really be end(), but that will not be called synchronously, 1276 // so instead we use LauncherAnimatorListenerAdapter.onAnimationEndOrCancel() 1277 // and call cancel() here. 1278 mDropAnim.cancel(); 1279 } 1280 mDropAnim = new ValueAnimator(); 1281 mDropAnim.setInterpolator(mQuintEaseOutInterpolator); 1282 1283 // The view is invisible during the animation; we render it manually. 1284 mDropAnim.addListener(new LauncherAnimatorListenerAdapter() { 1285 public void onAnimationStart(Animator animation) { 1286 // Set this here so that we don't render it until the animation begins 1287 mDropView = view; 1288 } 1289 1290 public void onAnimationEndOrCancel(Animator animation) { 1291 if (mDropView != null) { 1292 mDropView.setVisibility(View.VISIBLE); 1293 mDropView = null; 1294 } 1295 } 1296 }); 1297 1298 mDropAnim.setDuration(duration); 1299 mDropAnim.setFloatValues(0.0f, 1.0f); 1300 mDropAnim.removeAllUpdateListeners(); 1301 mDropAnim.addUpdateListener(new AnimatorUpdateListener() { 1302 public void onAnimationUpdate(ValueAnimator animation) { 1303 final float percent = (Float) animation.getAnimatedValue(); 1304 // Invalidate the old position 1305 invalidate(mDropViewPos[0], mDropViewPos[1], 1306 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1307 1308 mDropViewPos[0] = fromX + (int) (percent * dx + 0.5f); 1309 mDropViewPos[1] = fromY + (int) (percent * dy + 0.5f); 1310 invalidate(mDropViewPos[0], mDropViewPos[1], 1311 mDropViewPos[0] + view.getWidth(), mDropViewPos[1] + view.getHeight()); 1312 } 1313 }); 1314 1315 1316 view.setVisibility(View.INVISIBLE); 1317 1318 if (!mScroller.isFinished()) { 1319 mAnimOnPageEndMoving = mDropAnim; 1320 } else { 1321 mDropAnim.start(); 1322 } 1323 } 1324 1325 /** 1326 * {@inheritDoc} 1327 */ 1328 public boolean acceptDrop(DragSource source, int x, int y, 1329 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1330 1331 // If it's an external drop (e.g. from All Apps), check if it should be accepted 1332 if (source != this) { 1333 // Don't accept the drop if we're not over a screen at time of drop 1334 if (mDragTargetLayout == null) { 1335 return false; 1336 } 1337 1338 final CellLayout.CellInfo dragCellInfo = mDragInfo; 1339 final int spanX = dragCellInfo == null ? 1 : dragCellInfo.spanX; 1340 final int spanY = dragCellInfo == null ? 1 : dragCellInfo.spanY; 1341 1342 final View ignoreView = dragCellInfo == null ? null : dragCellInfo.cell; 1343 1344 // Don't accept the drop if there's no room for the item 1345 if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) { 1346 mLauncher.showOutOfSpaceMessage(); 1347 return false; 1348 } 1349 } 1350 return true; 1351 } 1352 1353 public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, 1354 DragView dragView, Object dragInfo) { 1355 1356 int originX = x - xOffset; 1357 int originY = y - yOffset; 1358 1359 if (mIsSmall || mIsInUnshrinkAnimation) { 1360 // get originX and originY in the local coordinate system of the screen 1361 mTempOriginXY[0] = originX; 1362 mTempOriginXY[1] = originY; 1363 mapPointFromSelfToChild(mDragTargetLayout, mTempOriginXY); 1364 originX = (int)mTempOriginXY[0]; 1365 originY = (int)mTempOriginXY[1]; 1366 } 1367 1368 if (source != this) { 1369 onDropExternal(originX, originY, dragInfo, mDragTargetLayout); 1370 } else if (mDragInfo != null) { 1371 final View cell = mDragInfo.cell; 1372 if (mDragTargetLayout != null) { 1373 // Move internally 1374 mTargetCell = findNearestVacantArea(originX, originY, 1375 mDragInfo.spanX, mDragInfo.spanY, cell, mDragTargetLayout, 1376 mTargetCell); 1377 1378 if (mTargetCell == null) { 1379 snapToPage(mDragInfo.screen); 1380 } else { 1381 int screen = indexOfChild(mDragTargetLayout); 1382 if (screen != mDragInfo.screen) { 1383 // Reparent the view 1384 ((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell); 1385 addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], 1386 mDragInfo.spanX, mDragInfo.spanY); 1387 } 1388 1389 // update the item's position after drop 1390 final ItemInfo info = (ItemInfo) cell.getTag(); 1391 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); 1392 mDragTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]); 1393 lp.cellX = mTargetCell[0]; 1394 lp.cellY = mTargetCell[1]; 1395 cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen, 1396 mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); 1397 1398 LauncherModel.moveItemInDatabase(mLauncher, info, 1399 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1400 lp.cellX, lp.cellY); 1401 } 1402 } 1403 1404 final CellLayout parent = (CellLayout) cell.getParent(); 1405 1406 // Prepare it to be animated into its new position 1407 // This must be called after the view has been re-parented 1408 setPositionForDropAnimation(dragView, originX, originY, parent, cell); 1409 parent.onDropChild(cell); 1410 } 1411 } 1412 1413 public void onDragEnter(DragSource source, int x, int y, int xOffset, 1414 int yOffset, DragView dragView, Object dragInfo) { 1415 mDragTargetLayout = null; // Reset the drag state 1416 1417 if (!mIsSmall) { 1418 mDragTargetLayout = getCurrentDropLayout(); 1419 mDragTargetLayout.onDragEnter(); 1420 showOutlines(); 1421 mInDragMode = true; 1422 } 1423 } 1424 1425 public DropTarget getDropTargetDelegate(DragSource source, int x, int y, 1426 int xOffset, int yOffset, DragView dragView, Object dragInfo) { 1427 1428 if (mIsSmall || mIsInUnshrinkAnimation) { 1429 // If we're shrunken, don't let anyone drag on folders/etc that are on the mini-screens 1430 return null; 1431 } 1432 // We may need to delegate the drag to a child view. If a 1x1 item 1433 // would land in a cell occupied by a DragTarget (e.g. a Folder), 1434 // then drag events should be handled by that child. 1435 1436 ItemInfo item = (ItemInfo)dragInfo; 1437 CellLayout currentLayout = getCurrentDropLayout(); 1438 1439 int dragPointX, dragPointY; 1440 if (item.spanX == 1 && item.spanY == 1) { 1441 // For a 1x1, calculate the drop cell exactly as in onDragOver 1442 dragPointX = x - xOffset; 1443 dragPointY = y - yOffset; 1444 } else { 1445 // Otherwise, use the exact drag coordinates 1446 dragPointX = x; 1447 dragPointY = y; 1448 } 1449 dragPointX += mScrollX - currentLayout.getLeft(); 1450 dragPointY += mScrollY - currentLayout.getTop(); 1451 1452 // If we are dragging over a cell that contains a DropTarget that will 1453 // accept the drop, delegate to that DropTarget. 1454 final int[] cellXY = mTempCell; 1455 currentLayout.estimateDropCell(dragPointX, dragPointY, item.spanX, item.spanY, cellXY); 1456 View child = currentLayout.getChildAt(cellXY[0], cellXY[1]); 1457 if (child instanceof DropTarget) { 1458 DropTarget target = (DropTarget)child; 1459 if (target.acceptDrop(source, x, y, xOffset, yOffset, dragView, dragInfo)) { 1460 return target; 1461 } 1462 } 1463 return null; 1464 } 1465 1466 /** 1467 * Tests to see if the drop will be accepted by Launcher, and if so, includes additional data 1468 * in the returned structure related to the widgets that match the drop (or a null list if it is 1469 * a shortcut drop). If the drop is not accepted then a null structure is returned. 1470 */ 1471 private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) { 1472 final LauncherModel model = mLauncher.getModel(); 1473 final ClipDescription desc = event.getClipDescription(); 1474 final int mimeTypeCount = desc.getMimeTypeCount(); 1475 for (int i = 0; i < mimeTypeCount; ++i) { 1476 final String mimeType = desc.getMimeType(i); 1477 if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) { 1478 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null); 1479 } else { 1480 final List<WidgetMimeTypeHandlerData> widgets = 1481 model.resolveWidgetsForMimeType(mContext, mimeType); 1482 if (widgets.size() > 0) { 1483 return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets); 1484 } 1485 } 1486 } 1487 return null; 1488 } 1489 1490 /** 1491 * Global drag and drop handler 1492 */ 1493 @Override 1494 public boolean onDragEvent(DragEvent event) { 1495 final ClipDescription desc = event.getClipDescription(); 1496 final CellLayout layout = (CellLayout) getChildAt(mCurrentPage); 1497 final int[] pos = new int[2]; 1498 layout.getLocationOnScreen(pos); 1499 // We need to offset the drag coordinates to layout coordinate space 1500 final int x = (int) event.getX() - pos[0]; 1501 final int y = (int) event.getY() - pos[1]; 1502 1503 switch (event.getAction()) { 1504 case DragEvent.ACTION_DRAG_STARTED: { 1505 // Validate this drag 1506 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1507 if (test != null) { 1508 boolean isShortcut = (test.second == null); 1509 if (isShortcut) { 1510 // Check if we have enough space on this screen to add a new shortcut 1511 if (!layout.findCellForSpan(pos, 1, 1)) { 1512 Toast.makeText(mContext, mContext.getString(R.string.out_of_space), 1513 Toast.LENGTH_SHORT).show(); 1514 return false; 1515 } 1516 } 1517 } else { 1518 // Show error message if we couldn't accept any of the items 1519 Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error), 1520 Toast.LENGTH_SHORT).show(); 1521 return false; 1522 } 1523 1524 // Create the drag outline 1525 // We need to add extra padding to the bitmap to make room for the glow effect 1526 final Canvas canvas = new Canvas(); 1527 final int bitmapPadding = HolographicOutlineHelper.OUTER_BLUR_RADIUS; 1528 mDragOutline = createExternalDragOutline(canvas, bitmapPadding); 1529 1530 // Show the current page outlines to indicate that we can accept this drop 1531 showOutlines(); 1532 layout.setHover(true); 1533 layout.onDragEnter(); 1534 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1535 1536 return true; 1537 } 1538 case DragEvent.ACTION_DRAG_LOCATION: 1539 // Visualize the drop location 1540 layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1); 1541 return true; 1542 case DragEvent.ACTION_DROP: { 1543 // Try and add any shortcuts 1544 int newDropCount = 0; 1545 final LauncherModel model = mLauncher.getModel(); 1546 final ClipData data = event.getClipData(); 1547 1548 // We assume that the mime types are ordered in descending importance of 1549 // representation. So we enumerate the list of mime types and alert the 1550 // user if any widgets can handle the drop. Only the most preferred 1551 // representation will be handled. 1552 pos[0] = x; 1553 pos[1] = y; 1554 Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event); 1555 if (test != null) { 1556 final int index = test.first; 1557 final List<WidgetMimeTypeHandlerData> widgets = test.second; 1558 final boolean isShortcut = (widgets == null); 1559 final String mimeType = desc.getMimeType(index); 1560 if (isShortcut) { 1561 final Intent intent = data.getItem(index).getIntent(); 1562 Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon()); 1563 onDropExternal(x, y, info, layout); 1564 } else { 1565 if (widgets.size() == 1) { 1566 // If there is only one item, then go ahead and add and configure 1567 // that widget 1568 final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo; 1569 final PendingAddWidgetInfo createInfo = 1570 new PendingAddWidgetInfo(widgetInfo, mimeType, data); 1571 mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, pos); 1572 } else { 1573 // Show the widget picker dialog if there is more than one widget 1574 // that can handle this data type 1575 final InstallWidgetReceiver.WidgetListAdapter adapter = 1576 new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType, 1577 data, widgets, layout, mCurrentPage, pos); 1578 final AlertDialog.Builder builder = 1579 new AlertDialog.Builder(mContext); 1580 builder.setAdapter(adapter, adapter); 1581 builder.setCancelable(true); 1582 builder.setTitle(mContext.getString( 1583 R.string.external_drop_widget_pick_title)); 1584 builder.setIcon(R.drawable.ic_no_applications); 1585 builder.show(); 1586 } 1587 } 1588 } 1589 return true; 1590 } 1591 case DragEvent.ACTION_DRAG_ENDED: 1592 // Hide the page outlines after the drop 1593 layout.setHover(false); 1594 layout.onDragExit(); 1595 hideOutlines(); 1596 return true; 1597 } 1598 return super.onDragEvent(event); 1599 } 1600 1601 /* 1602 * 1603 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1604 * coordinate space. The argument xy is modified with the return result. 1605 * 1606 */ 1607 void mapPointFromSelfToChild(View v, float[] xy) { 1608 mapPointFromSelfToChild(v, xy, null); 1609 } 1610 1611 /* 1612 * 1613 * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's 1614 * coordinate space. The argument xy is modified with the return result. 1615 * 1616 * if cachedInverseMatrix is not null, this method will just use that matrix instead of 1617 * computing it itself; we use this to avoid redundant matrix inversions in 1618 * findMatchingPageForDragOver 1619 * 1620 */ 1621 void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { 1622 if (cachedInverseMatrix == null) { 1623 v.getMatrix().invert(mTempInverseMatrix); 1624 cachedInverseMatrix = mTempInverseMatrix; 1625 } 1626 xy[0] = xy[0] + mScrollX - v.getLeft(); 1627 xy[1] = xy[1] + mScrollY - v.getTop(); 1628 cachedInverseMatrix.mapPoints(xy); 1629 } 1630 1631 /* 1632 * 1633 * Convert the 2D coordinate xy from this CellLayout's coordinate space to 1634 * the parent View's coordinate space. The argument xy is modified with the return result. 1635 * 1636 */ 1637 void mapPointFromChildToSelf(View v, float[] xy) { 1638 v.getMatrix().mapPoints(xy); 1639 xy[0] -= (mScrollX - v.getLeft()); 1640 xy[1] -= (mScrollY - v.getTop()); 1641 } 1642 1643 static private float squaredDistance(float[] point1, float[] point2) { 1644 float distanceX = point1[0] - point2[0]; 1645 float distanceY = point2[1] - point2[1]; 1646 return distanceX * distanceX + distanceY * distanceY; 1647 } 1648 1649 /* 1650 * 1651 * Returns true if the passed CellLayout cl overlaps with dragView 1652 * 1653 */ 1654 boolean overlaps(CellLayout cl, DragView dragView, 1655 int dragViewX, int dragViewY, Matrix cachedInverseMatrix) { 1656 // Transform the coordinates of the item being dragged to the CellLayout's coordinates 1657 final float[] draggedItemTopLeft = mTempDragCoordinates; 1658 draggedItemTopLeft[0] = dragViewX + dragView.getScaledDragRegionXOffset(); 1659 draggedItemTopLeft[1] = dragViewY + dragView.getScaledDragRegionYOffset(); 1660 final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates; 1661 draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getScaledDragRegionWidth(); 1662 draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getScaledDragRegionHeight(); 1663 1664 // Transform the dragged item's top left coordinates 1665 // to the CellLayout's local coordinates 1666 mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix); 1667 float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]); 1668 float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]); 1669 1670 if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) { 1671 // Transform the dragged item's bottom right coordinates 1672 // to the CellLayout's local coordinates 1673 mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix); 1674 float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]); 1675 float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]); 1676 1677 if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) { 1678 float overlap = (overlapRegionRight - overlapRegionLeft) * 1679 (overlapRegionBottom - overlapRegionTop); 1680 if (overlap > 0) { 1681 return true; 1682 } 1683 } 1684 } 1685 return false; 1686 } 1687 1688 /* 1689 * 1690 * This method returns the CellLayout that is currently being dragged to. In order to drag 1691 * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second 1692 * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one 1693 * 1694 * Return null if no CellLayout is currently being dragged over 1695 * 1696 */ 1697 private CellLayout findMatchingPageForDragOver( 1698 DragView dragView, int originX, int originY, int offsetX, int offsetY) { 1699 // We loop through all the screens (ie CellLayouts) and see which ones overlap 1700 // with the item being dragged and then choose the one that's closest to the touch point 1701 final int screenCount = getChildCount(); 1702 CellLayout bestMatchingScreen = null; 1703 float smallestDistSoFar = Float.MAX_VALUE; 1704 1705 for (int i = 0; i < screenCount; i++) { 1706 CellLayout cl = (CellLayout)getChildAt(i); 1707 1708 final float[] touchXy = mTempTouchCoordinates; 1709 touchXy[0] = originX + offsetX; 1710 touchXy[1] = originY + offsetY; 1711 1712 // Transform the touch coordinates to the CellLayout's local coordinates 1713 // If the touch point is within the bounds of the cell layout, we can return immediately 1714 cl.getMatrix().invert(mTempInverseMatrix); 1715 mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); 1716 1717 if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && 1718 touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { 1719 return cl; 1720 } 1721 1722 if (overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) { 1723 // Get the center of the cell layout in screen coordinates 1724 final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; 1725 cellLayoutCenter[0] = cl.getWidth()/2; 1726 cellLayoutCenter[1] = cl.getHeight()/2; 1727 mapPointFromChildToSelf(cl, cellLayoutCenter); 1728 1729 touchXy[0] = originX + offsetX; 1730 touchXy[1] = originY + offsetY; 1731 1732 // Calculate the distance between the center of the CellLayout 1733 // and the touch point 1734 float dist = squaredDistance(touchXy, cellLayoutCenter); 1735 1736 if (dist < smallestDistSoFar) { 1737 smallestDistSoFar = dist; 1738 bestMatchingScreen = cl; 1739 } 1740 } 1741 } 1742 return bestMatchingScreen; 1743 } 1744 1745 public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, 1746 DragView dragView, Object dragInfo) { 1747 // When touch is inside the scroll area, skip dragOver actions for the current screen 1748 if (!mInScrollArea) { 1749 CellLayout layout; 1750 int originX = x - xOffset; 1751 int originY = y - yOffset; 1752 if (mIsSmall || mIsInUnshrinkAnimation) { 1753 layout = findMatchingPageForDragOver( 1754 dragView, originX, originY, xOffset, yOffset); 1755 1756 if (layout != mDragTargetLayout) { 1757 if (mDragTargetLayout != null) { 1758 mDragTargetLayout.setHover(false); 1759 } 1760 mDragTargetLayout = layout; 1761 if (mDragTargetLayout != null) { 1762 mDragTargetLayout.setHover(true); 1763 } 1764 } 1765 } else { 1766 layout = getCurrentDropLayout(); 1767 1768 final ItemInfo item = (ItemInfo)dragInfo; 1769 if (dragInfo instanceof LauncherAppWidgetInfo) { 1770 LauncherAppWidgetInfo widgetInfo = (LauncherAppWidgetInfo)dragInfo; 1771 1772 if (widgetInfo.spanX == -1) { 1773 // Calculate the grid spans needed to fit this widget 1774 int[] spans = layout.rectToCell( 1775 widgetInfo.minWidth, widgetInfo.minHeight, null); 1776 item.spanX = spans[0]; 1777 item.spanY = spans[1]; 1778 } 1779 } 1780 1781 if (source instanceof AllAppsPagedView) { 1782 // This is a hack to fix the point used to determine which cell an icon from 1783 // the all apps screen is over 1784 if (item != null && item.spanX == 1 && layout != null) { 1785 int dragRegionLeft = (dragView.getWidth() - layout.getCellWidth()) / 2; 1786 1787 originX += dragRegionLeft - dragView.getDragRegionLeft(); 1788 if (dragView.getDragRegionWidth() != layout.getCellWidth()) { 1789 dragView.setDragRegion(dragView.getDragRegionLeft(), 1790 dragView.getDragRegionTop(), 1791 layout.getCellWidth(), 1792 dragView.getDragRegionHeight()); 1793 } 1794 } 1795 } 1796 1797 if (layout != mDragTargetLayout) { 1798 if (mDragTargetLayout != null) { 1799 mDragTargetLayout.onDragExit(); 1800 } 1801 layout.onDragEnter(); 1802 mDragTargetLayout = layout; 1803 } 1804 1805 // only visualize the drop locations for moving icons within the home screen on 1806 // tablet on phone, we also visualize icons dragged in from All Apps 1807 if ((!LauncherApplication.isScreenXLarge() || source == this) 1808 && mDragTargetLayout != null) { 1809 final View child = (mDragInfo == null) ? null : mDragInfo.cell; 1810 int localOriginX = originX - (mDragTargetLayout.getLeft() - mScrollX); 1811 int localOriginY = originY - (mDragTargetLayout.getTop() - mScrollY); 1812 mDragTargetLayout.visualizeDropLocation(child, mDragOutline, 1813 localOriginX, localOriginY, item.spanX, item.spanY); 1814 } 1815 } 1816 } 1817 } 1818 1819 public void onDragExit(DragSource source, int x, int y, int xOffset, 1820 int yOffset, DragView dragView, Object dragInfo) { 1821 if (mDragTargetLayout != null) { 1822 mDragTargetLayout.onDragExit(); 1823 } 1824 if (!mIsPageMoving) { 1825 hideOutlines(); 1826 mInDragMode = false; 1827 } 1828 clearAllHovers(); 1829 } 1830 1831 private void onDropExternal(int x, int y, Object dragInfo, 1832 CellLayout cellLayout) { 1833 onDropExternal(x, y, dragInfo, cellLayout, false); 1834 } 1835 1836 @Override 1837 public void getHitRect(Rect outRect) { 1838 // We want the workspace to have the whole area of the display (it will find the correct 1839 // cell layout to drop to in the existing drag/drop logic. 1840 final Display d = mLauncher.getWindowManager().getDefaultDisplay(); 1841 outRect.set(0, 0, d.getWidth(), d.getHeight()); 1842 } 1843 1844 /** 1845 * Add the item specified by dragInfo to the given layout. 1846 * This is basically the equivalent of onDropExternal, except it's not initiated 1847 * by drag and drop. 1848 * @return true if successful 1849 */ 1850 public boolean addExternalItemToScreen(Object dragInfo, View layout) { 1851 CellLayout cl = (CellLayout) layout; 1852 ItemInfo info = (ItemInfo) dragInfo; 1853 1854 if (cl.findCellForSpan(mTempEstimate, info.spanX, info.spanY)) { 1855 onDropExternal(-1, -1, dragInfo, cl, false); 1856 return true; 1857 } 1858 mLauncher.showOutOfSpaceMessage(); 1859 return false; 1860 } 1861 1862 // Drag from somewhere else 1863 // NOTE: This can also be called when we are outside of a drag event, when we want 1864 // to add an item to one of the workspace screens. 1865 private void onDropExternal(int x, int y, Object dragInfo, 1866 CellLayout cellLayout, boolean insertAtFirst) { 1867 int screen = indexOfChild(cellLayout); 1868 if (dragInfo instanceof PendingAddItemInfo) { 1869 PendingAddItemInfo info = (PendingAddItemInfo) dragInfo; 1870 // When dragging and dropping from customization tray, we deal with creating 1871 // widgets/shortcuts/folders in a slightly different way 1872 int[] touchXY = new int[2]; 1873 touchXY[0] = x; 1874 touchXY[1] = y; 1875 switch (info.itemType) { 1876 case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: 1877 mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) info, screen, touchXY); 1878 break; 1879 case LauncherSettings.Favorites.ITEM_TYPE_LIVE_FOLDER: 1880 mLauncher.addLiveFolderFromDrop(info.componentName, screen, touchXY); 1881 break; 1882 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 1883 mLauncher.processShortcutFromDrop(info.componentName, screen, touchXY); 1884 break; 1885 default: 1886 throw new IllegalStateException("Unknown item type: " + info.itemType); 1887 } 1888 cellLayout.onDragExit(); 1889 cellLayout.animateDrop(); 1890 return; 1891 } 1892 1893 // This is for other drag/drop cases, like dragging from All Apps 1894 ItemInfo info = (ItemInfo) dragInfo; 1895 1896 View view = null; 1897 1898 switch (info.itemType) { 1899 case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: 1900 case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: 1901 if (info.container == NO_ID && info instanceof ApplicationInfo) { 1902 // Came from all apps -- make a copy 1903 info = new ShortcutInfo((ApplicationInfo) info); 1904 } 1905 view = mLauncher.createShortcut(R.layout.application, cellLayout, 1906 (ShortcutInfo) info); 1907 break; 1908 case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: 1909 view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, 1910 cellLayout, (UserFolderInfo) info, mIconCache); 1911 break; 1912 default: 1913 throw new IllegalStateException("Unknown item type: " + info.itemType); 1914 } 1915 1916 // If the view is null, it has already been added. 1917 if (view == null) { 1918 cellLayout.onDragExit(); 1919 } else { 1920 mTargetCell = new int[]{x, y}; 1921 cellLayout.findCellForSpan(mTargetCell, 1, 1); 1922 addInScreen(view, indexOfChild(cellLayout), mTargetCell[0], 1923 mTargetCell[1], info.spanX, info.spanY, insertAtFirst); 1924 cellLayout.onDropChild(view); 1925 cellLayout.animateDrop(); 1926 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); 1927 1928 LauncherModel.addOrMoveItemInDatabase(mLauncher, info, 1929 LauncherSettings.Favorites.CONTAINER_DESKTOP, screen, 1930 lp.cellX, lp.cellY); 1931 } 1932 } 1933 1934 /** 1935 * Return the current {@link CellLayout}, correctly picking the destination 1936 * screen while a scroll is in progress. 1937 */ 1938 private CellLayout getCurrentDropLayout() { 1939 // if we're currently small, use findMatchingPageForDragOver instead 1940 if (mIsSmall) return null; 1941 int index = mScroller.isFinished() ? mCurrentPage : mNextPage; 1942 return (CellLayout) getChildAt(index); 1943 } 1944 1945 /** 1946 * Return the current CellInfo describing our current drag; this method exists 1947 * so that Launcher can sync this object with the correct info when the activity is created/ 1948 * destroyed 1949 * 1950 */ 1951 public CellLayout.CellInfo getDragInfo() { 1952 return mDragInfo; 1953 } 1954 1955 /** 1956 * Calculate the nearest cell where the given object would be dropped. 1957 */ 1958 private int[] findNearestVacantArea(int pixelX, int pixelY, 1959 int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { 1960 1961 int localPixelX = pixelX - (layout.getLeft() - mScrollX); 1962 int localPixelY = pixelY - (layout.getTop() - mScrollY); 1963 1964 // Find the best target drop location 1965 return layout.findNearestVacantArea( 1966 localPixelX, localPixelY, spanX, spanY, ignoreView, recycle); 1967 } 1968 1969 /** 1970 * Estimate the size that a child with the given dimensions will take in the current screen. 1971 */ 1972 void estimateChildSize(int minWidth, int minHeight, int[] result) { 1973 ((CellLayout)getChildAt(mCurrentPage)).estimateChildSize(minWidth, minHeight, result); 1974 } 1975 1976 void setLauncher(Launcher launcher) { 1977 mLauncher = launcher; 1978 } 1979 1980 public void setDragController(DragController dragController) { 1981 mDragController = dragController; 1982 } 1983 1984 public void onDropCompleted(View target, boolean success) { 1985 if (success) { 1986 if (target != this && mDragInfo != null) { 1987 final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); 1988 cellLayout.removeView(mDragInfo.cell); 1989 if (mDragInfo.cell instanceof DropTarget) { 1990 mDragController.removeDropTarget((DropTarget)mDragInfo.cell); 1991 } 1992 // final Object tag = mDragInfo.cell.getTag(); 1993 } 1994 } else if (mDragInfo != null) { 1995 ((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell); 1996 } 1997 1998 mDragOutline = null; 1999 mDragInfo = null; 2000 } 2001 2002 public boolean isDropEnabled() { 2003 return true; 2004 } 2005 2006 @Override 2007 protected void onRestoreInstanceState(Parcelable state) { 2008 super.onRestoreInstanceState(state); 2009 Launcher.setScreen(mCurrentPage); 2010 } 2011 2012 @Override 2013 public void scrollLeft() { 2014 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2015 super.scrollLeft(); 2016 } 2017 } 2018 2019 @Override 2020 public void scrollRight() { 2021 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2022 super.scrollRight(); 2023 } 2024 } 2025 2026 @Override 2027 public void onEnterScrollArea(int direction) { 2028 if (!mIsSmall && !mIsInUnshrinkAnimation) { 2029 mInScrollArea = true; 2030 final int screen = getCurrentPage() + ((direction == DragController.SCROLL_LEFT) ? -1 : 1); 2031 if (0 <= screen && screen < getChildCount()) { 2032 ((CellLayout) getChildAt(screen)).setHover(true); 2033 2034 if (mDragTargetLayout != null) { 2035 mDragTargetLayout.onDragExit(); 2036 mDragTargetLayout = null; 2037 } 2038 } 2039 } 2040 } 2041 2042 private void clearAllHovers() { 2043 final int childCount = getChildCount(); 2044 for (int i = 0; i < childCount; i++) { 2045 ((CellLayout) getChildAt(i)).setHover(false); 2046 } 2047 } 2048 2049 @Override 2050 public void onExitScrollArea() { 2051 if (mInScrollArea) { 2052 mInScrollArea = false; 2053 clearAllHovers(); 2054 } 2055 } 2056 2057 public Folder getFolderForTag(Object tag) { 2058 final int screenCount = getChildCount(); 2059 for (int screen = 0; screen < screenCount; screen++) { 2060 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2061 int count = currentScreen.getChildCount(); 2062 for (int i = 0; i < count; i++) { 2063 View child = currentScreen.getChildAt(i); 2064 CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); 2065 if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { 2066 Folder f = (Folder) child; 2067 if (f.getInfo() == tag && f.getInfo().opened) { 2068 return f; 2069 } 2070 } 2071 } 2072 } 2073 return null; 2074 } 2075 2076 public View getViewForTag(Object tag) { 2077 int screenCount = getChildCount(); 2078 for (int screen = 0; screen < screenCount; screen++) { 2079 CellLayout currentScreen = ((CellLayout) getChildAt(screen)); 2080 int count = currentScreen.getChildCount(); 2081 for (int i = 0; i < count; i++) { 2082 View child = currentScreen.getChildAt(i); 2083 if (child.getTag() == tag) { 2084 return child; 2085 } 2086 } 2087 } 2088 return null; 2089 } 2090 2091 2092 void removeItems(final ArrayList<ApplicationInfo> apps) { 2093 final int screenCount = getChildCount(); 2094 final PackageManager manager = getContext().getPackageManager(); 2095 final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext()); 2096 2097 final HashSet<String> packageNames = new HashSet<String>(); 2098 final int appCount = apps.size(); 2099 for (int i = 0; i < appCount; i++) { 2100 packageNames.add(apps.get(i).componentName.getPackageName()); 2101 } 2102 2103 for (int i = 0; i < screenCount; i++) { 2104 final CellLayout layout = (CellLayout) getChildAt(i); 2105 2106 // Avoid ANRs by treating each screen separately 2107 post(new Runnable() { 2108 public void run() { 2109 final ArrayList<View> childrenToRemove = new ArrayList<View>(); 2110 childrenToRemove.clear(); 2111 2112 int childCount = layout.getChildCount(); 2113 for (int j = 0; j < childCount; j++) { 2114 final View view = layout.getChildAt(j); 2115 Object tag = view.getTag(); 2116 2117 if (tag instanceof ShortcutInfo) { 2118 final ShortcutInfo info = (ShortcutInfo) tag; 2119 final Intent intent = info.intent; 2120 final ComponentName name = intent.getComponent(); 2121 2122 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2123 for (String packageName: packageNames) { 2124 if (packageName.equals(name.getPackageName())) { 2125 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2126 childrenToRemove.add(view); 2127 } 2128 } 2129 } 2130 } else if (tag instanceof UserFolderInfo) { 2131 final UserFolderInfo info = (UserFolderInfo) tag; 2132 final ArrayList<ShortcutInfo> contents = info.contents; 2133 final ArrayList<ShortcutInfo> toRemove = new ArrayList<ShortcutInfo>(1); 2134 final int contentsCount = contents.size(); 2135 boolean removedFromFolder = false; 2136 2137 for (int k = 0; k < contentsCount; k++) { 2138 final ShortcutInfo appInfo = contents.get(k); 2139 final Intent intent = appInfo.intent; 2140 final ComponentName name = intent.getComponent(); 2141 2142 if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2143 for (String packageName: packageNames) { 2144 if (packageName.equals(name.getPackageName())) { 2145 toRemove.add(appInfo); 2146 LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); 2147 removedFromFolder = true; 2148 } 2149 } 2150 } 2151 } 2152 2153 contents.removeAll(toRemove); 2154 if (removedFromFolder) { 2155 final Folder folder = getOpenFolder(); 2156 if (folder != null) 2157 folder.notifyDataSetChanged(); 2158 } 2159 } else if (tag instanceof LiveFolderInfo) { 2160 final LiveFolderInfo info = (LiveFolderInfo) tag; 2161 final Uri uri = info.uri; 2162 final ProviderInfo providerInfo = manager.resolveContentProvider( 2163 uri.getAuthority(), 0); 2164 2165 if (providerInfo != null) { 2166 for (String packageName: packageNames) { 2167 if (packageName.equals(providerInfo.packageName)) { 2168 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2169 childrenToRemove.add(view); 2170 } 2171 } 2172 } 2173 } else if (tag instanceof LauncherAppWidgetInfo) { 2174 final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag; 2175 final AppWidgetProviderInfo provider = 2176 widgets.getAppWidgetInfo(info.appWidgetId); 2177 if (provider != null) { 2178 for (String packageName: packageNames) { 2179 if (packageName.equals(provider.provider.getPackageName())) { 2180 LauncherModel.deleteItemFromDatabase(mLauncher, info); 2181 childrenToRemove.add(view); 2182 } 2183 } 2184 } 2185 } 2186 } 2187 2188 childCount = childrenToRemove.size(); 2189 for (int j = 0; j < childCount; j++) { 2190 View child = childrenToRemove.get(j); 2191 layout.removeViewInLayout(child); 2192 if (child instanceof DropTarget) { 2193 mDragController.removeDropTarget((DropTarget)child); 2194 } 2195 } 2196 2197 if (childCount > 0) { 2198 layout.requestLayout(); 2199 layout.invalidate(); 2200 } 2201 } 2202 }); 2203 } 2204 } 2205 2206 void updateShortcuts(ArrayList<ApplicationInfo> apps) { 2207 final int screenCount = getChildCount(); 2208 for (int i = 0; i < screenCount; i++) { 2209 final CellLayout layout = (CellLayout) getChildAt(i); 2210 int childCount = layout.getChildCount(); 2211 for (int j = 0; j < childCount; j++) { 2212 final View view = layout.getChildAt(j); 2213 Object tag = view.getTag(); 2214 if (tag instanceof ShortcutInfo) { 2215 ShortcutInfo info = (ShortcutInfo)tag; 2216 // We need to check for ACTION_MAIN otherwise getComponent() might 2217 // return null for some shortcuts (for instance, for shortcuts to 2218 // web pages.) 2219 final Intent intent = info.intent; 2220 final ComponentName name = intent.getComponent(); 2221 if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && 2222 Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) { 2223 final int appCount = apps.size(); 2224 for (int k = 0; k < appCount; k++) { 2225 ApplicationInfo app = apps.get(k); 2226 if (app.componentName.equals(name)) { 2227 info.setIcon(mIconCache.getIcon(info.intent)); 2228 ((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null, 2229 new FastBitmapDrawable(info.getIcon(mIconCache)), 2230 null, null); 2231 } 2232 } 2233 } 2234 } 2235 } 2236 } 2237 } 2238 2239 void moveToDefaultScreen(boolean animate) { 2240 if (mIsSmall || mIsInUnshrinkAnimation) { 2241 mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage)); 2242 } else if (animate) { 2243 snapToPage(mDefaultPage); 2244 } else { 2245 setCurrentPage(mDefaultPage); 2246 } 2247 getChildAt(mDefaultPage).requestFocus(); 2248 } 2249 2250 void setIndicators(Drawable previous, Drawable next) { 2251 mPreviousIndicator = previous; 2252 mNextIndicator = next; 2253 previous.setLevel(mCurrentPage); 2254 next.setLevel(mCurrentPage); 2255 } 2256 2257 @Override 2258 public void syncPages() { 2259 } 2260 2261 @Override 2262 public void syncPageItems(int page) { 2263 } 2264 2265} 2266