Java tutorial
/* * Copyright (C) 2008 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.grumoon.glauncher; import android.animation.Animator; import android.animation.Animator.AnimatorListener; import android.animation.AnimatorListenerAdapter; import android.animation.AnimatorSet; import android.animation.LayoutTransition; import android.animation.ObjectAnimator; import android.animation.TimeInterpolator; import android.animation.ValueAnimator; import android.animation.ValueAnimator.AnimatorUpdateListener; import android.app.WallpaperManager; import android.appwidget.AppWidgetHostView; import android.appwidget.AppWidgetProviderInfo; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.res.Resources; import android.content.res.TypedArray; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Matrix; import android.graphics.Point; import android.graphics.PointF; import android.graphics.Rect; import android.graphics.Region.Op; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.IBinder; import android.os.Parcelable; import android.support.v4.view.ViewCompat; import android.util.AttributeSet; import android.util.Log; import android.util.SparseArray; import android.view.Choreographer; import android.view.Display; import android.view.MotionEvent; import android.view.View; import android.view.ViewGroup; import android.view.View.OnClickListener; import android.view.accessibility.AccessibilityEvent; import android.view.accessibility.AccessibilityManager; import android.view.accessibility.AccessibilityNodeInfo; import android.view.animation.DecelerateInterpolator; import android.view.animation.Interpolator; import android.widget.TextView; import com.grumoon.glauncher.R; import com.grumoon.glauncher.FolderIcon.FolderRingAnimator; import com.grumoon.glauncher.Launcher.CustomContentCallbacks; import com.grumoon.glauncher.LauncherSettings.Favorites; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; /** * The workspace is a wide area with a wallpaper and a finite number of pages. * Each page contains a number of icons, folders or widgets the user can * interact with. A workspace is meant to be used with a fixed width only. */ public class Workspace extends SmoothPagedView implements DropTarget, DragSource, DragScroller, View.OnTouchListener, DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener, Insettable { private static final String TAG = "Launcher.Workspace"; // Y rotation to apply to the workspace screens private static final float WORKSPACE_OVERSCROLL_ROTATION = 24f; private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0; private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375; private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100; private static final int BACKGROUND_FADE_OUT_DURATION = 350; private static final int ADJACENT_SCREEN_DROP_DURATION = 300; private static final int FLING_THRESHOLD_VELOCITY = 500; private static final float ALPHA_CUTOFF_THRESHOLD = 0.01f; // These animators are used to fade the children's outlines private ObjectAnimator mChildrenOutlineFadeInAnimation; private ObjectAnimator mChildrenOutlineFadeOutAnimation; private float mChildrenOutlineAlpha = 0; // These properties refer to the background protection gradient used for AllApps and Customize private ValueAnimator mBackgroundFadeInAnimation; private ValueAnimator mBackgroundFadeOutAnimation; private Drawable mBackground; boolean mDrawBackground = true; private float mBackgroundAlpha = 0; private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200; private long mTouchDownTime = -1; private long mCustomContentShowTime = -1; private LayoutTransition mLayoutTransition; private final WallpaperManager mWallpaperManager; private IBinder mWindowToken; private int mOriginalDefaultPage; private int mDefaultPage; private ShortcutAndWidgetContainer mDragSourceInternal; private static boolean sAccessibilityEnabled; // The screen id used for the empty screen always present to the right. private final static long EXTRA_EMPTY_SCREEN_ID = -201; private final static long CUSTOM_CONTENT_SCREEN_ID = -301; private HashMap<Long, CellLayout> mWorkspaceScreens = new HashMap<Long, CellLayout>(); private ArrayList<Long> mScreenOrder = new ArrayList<Long>(); /** * CellInfo for the cell that is currently being dragged */ private CellLayout.CellInfo mDragInfo; /** * Target drop area calculated during last acceptDrop call. */ private int[] mTargetCell = new int[2]; private int mDragOverX = -1; private int mDragOverY = -1; static Rect mLandscapeCellLayoutMetrics = null; static Rect mPortraitCellLayoutMetrics = null; CustomContentCallbacks mCustomContentCallbacks; boolean mCustomContentShowing; private float mLastCustomContentScrollProgress = -1f; private String mCustomContentDescription = ""; /** * The CellLayout that is currently being dragged over */ private CellLayout mDragTargetLayout = null; /** * The CellLayout that we will show as glowing */ private CellLayout mDragOverlappingLayout = null; /** * The CellLayout which will be dropped to */ private CellLayout mDropToLayout = null; private Launcher mLauncher; private IconCache mIconCache; private DragController mDragController; // These are temporary variables to prevent having to allocate a new object just to // return an (x, y) value from helper functions. Do NOT use them to maintain other state. private int[] mTempCell = new int[2]; private int[] mTempPt = new int[2]; private int[] mTempEstimate = new int[2]; private float[] mDragViewVisualCenter = new float[2]; private float[] mTempCellLayoutCenterCoordinates = new float[2]; private Matrix mTempInverseMatrix = new Matrix(); private SpringLoadedDragController mSpringLoadedDragController; private float mSpringLoadedShrinkFactor; private float mOverviewModeShrinkFactor; private int mOverviewModePageOffset; // State variable that indicates whether the pages are small (ie when you're // in all apps or customize mode) enum State { NORMAL, SPRING_LOADED, SMALL, OVERVIEW }; private State mState = State.NORMAL; private boolean mIsSwitchingState = false; boolean mAnimatingViewIntoPlace = false; boolean mIsDragOccuring = false; boolean mChildrenLayersEnabled = true; private boolean mStripScreensOnPageStopMoving = false; /** Is the user is dragging an item near the edge of a page? */ private boolean mInScrollArea = false; private HolographicOutlineHelper mOutlineHelper; private Bitmap mDragOutline = null; private final Rect mTempRect = new Rect(); private final int[] mTempXY = new int[2]; private int[] mTempVisiblePagesRange = new int[2]; private boolean mOverscrollTransformsSet; private float mLastOverscrollPivotX; public static final int DRAG_BITMAP_PADDING = 2; private boolean mWorkspaceFadeInAdjacentScreens; WallpaperOffsetInterpolator mWallpaperOffset; private Runnable mDelayedResizeRunnable; private Runnable mDelayedSnapToPageRunnable; private Point mDisplaySize = new Point(); private int mCameraDistance; // Variables relating to the creation of user folders by hovering shortcuts over shortcuts private static final int FOLDER_CREATION_TIMEOUT = 0; private static final int REORDER_TIMEOUT = 250; private final Alarm mFolderCreationAlarm = new Alarm(); private final Alarm mReorderAlarm = new Alarm(); private FolderRingAnimator mDragFolderRingAnimator = null; private FolderIcon mDragOverFolderIcon = null; private boolean mCreateUserFolderOnDrop = false; private boolean mAddToExistingFolderOnDrop = false; private DropTarget.DragEnforcer mDragEnforcer; private float mMaxDistanceForFolderCreation; // Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget) private float mXDown; private float mYDown; final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6; final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3; final static float TOUCH_SLOP_DAMPING_FACTOR = 4; // Relating to the animation of items being dropped externally public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0; public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1; public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2; public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3; public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4; // Related to dragging, folder creation and reordering private static final int DRAG_MODE_NONE = 0; private static final int DRAG_MODE_CREATE_FOLDER = 1; private static final int DRAG_MODE_ADD_TO_FOLDER = 2; private static final int DRAG_MODE_REORDER = 3; private int mDragMode = DRAG_MODE_NONE; private int mLastReorderX = -1; private int mLastReorderY = -1; private SparseArray<Parcelable> mSavedStates; private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>(); // These variables are used for storing the initial and final values during workspace animations private int mSavedScrollX; private float mSavedRotationY; private float mSavedTranslationX; private float mCurrentScale; private float mNewScale; private float[] mOldBackgroundAlphas; private float[] mOldAlphas; private float[] mNewBackgroundAlphas; private float[] mNewAlphas; private int mLastChildCount = -1; private float mTransitionProgress; private Runnable mDeferredAction; private boolean mDeferDropAfterUninstall; private boolean mUninstallSuccessful; private final Runnable mBindPages = new Runnable() { @Override public void run() { mLauncher.getModel().bindRemainingSynchronousPages(); } }; /** * Used to inflate the Workspace from XML. * * @param context The application's context. * @param attrs The attributes set containing the Workspace's customization values. */ public Workspace(Context context, AttributeSet attrs) { this(context, attrs, 0); } /** * Used to inflate the Workspace from XML. * * @param context The application's context. * @param attrs The attributes set containing the Workspace's customization values. * @param defStyle Unused. */ public Workspace(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); mContentIsRefreshable = false; mOutlineHelper = HolographicOutlineHelper.obtain(context); mDragEnforcer = new DropTarget.DragEnforcer(context); // With workspace, data is available straight from the get-go setDataIsReady(); mLauncher = (Launcher) context; final Resources res = getResources(); mWorkspaceFadeInAdjacentScreens = res.getBoolean(R.bool.config_workspaceFadeAdjacentScreens); mFadeInAdjacentScreens = false; mWallpaperManager = WallpaperManager.getInstance(context); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.Workspace, defStyle, 0); mSpringLoadedShrinkFactor = res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f; mOverviewModeShrinkFactor = res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100.0f; mOverviewModePageOffset = res.getDimensionPixelSize(R.dimen.overview_mode_page_offset); mCameraDistance = res.getInteger(R.integer.config_cameraDistance); mOriginalDefaultPage = mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1); a.recycle(); setOnHierarchyChangeListener(this); setHapticFeedbackEnabled(false); initWorkspace(); // Disable multitouch across the workspace/all apps/customize tray setMotionEventSplittingEnabled(true); setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES); } @Override public void setInsets(Rect insets) { mInsets.set(insets); } // estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each // dimension if unsuccessful public int[] estimateItemSize(int hSpan, int vSpan, ItemInfo itemInfo, boolean springLoaded) { int[] size = new int[2]; if (getChildCount() > 0) { // Use the first non-custom page to estimate the child position CellLayout cl = (CellLayout) getChildAt(numCustomPages()); Rect r = estimateItemPosition(cl, itemInfo, 0, 0, hSpan, vSpan); size[0] = r.width(); size[1] = r.height(); if (springLoaded) { size[0] *= mSpringLoadedShrinkFactor; size[1] *= mSpringLoadedShrinkFactor; } return size; } else { size[0] = Integer.MAX_VALUE; size[1] = Integer.MAX_VALUE; return size; } } public Rect estimateItemPosition(CellLayout cl, ItemInfo pendingInfo, int hCell, int vCell, int hSpan, int vSpan) { Rect r = new Rect(); cl.cellToRect(hCell, vCell, hSpan, vSpan, r); return r; } public void onDragStart(final DragSource source, Object info, int dragAction) { mIsDragOccuring = true; updateChildrenLayersEnabled(false); mLauncher.lockScreenOrientation(); mLauncher.onInteractionBegin(); setChildrenBackgroundAlphaMultipliers(1f); // Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging InstallShortcutReceiver.enableInstallQueue(); UninstallShortcutReceiver.enableUninstallQueue(); post(new Runnable() { @Override public void run() { if (mIsDragOccuring) { addExtraEmptyScreenOnDrag(); } } }); } public void onDragEnd() { mIsDragOccuring = false; updateChildrenLayersEnabled(false); mLauncher.unlockScreenOrientation(false); // Re-enable any Un/InstallShortcutReceiver and now process any queued items InstallShortcutReceiver.disableAndFlushInstallQueue(getContext()); UninstallShortcutReceiver.disableAndFlushUninstallQueue(getContext()); removeExtraEmptyScreen(); mDragSourceInternal = null; mLauncher.onInteractionEnd(); } /** * Initializes various states for this workspace. */ protected void initWorkspace() { Context context = getContext(); mCurrentPage = mDefaultPage; Launcher.setScreen(mCurrentPage); LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); mIconCache = app.getIconCache(); setWillNotDraw(false); setClipChildren(false); setClipToPadding(false); setChildrenDrawnWithCacheEnabled(true); // This is a bit of a hack to account for the fact that we translate the workspace // up a bit, and still need to draw the background covering the whole screen. setMinScale(mOverviewModeShrinkFactor - 0.2f); setupLayoutTransition(); final Resources res = getResources(); try { mBackground = res.getDrawable(R.drawable.apps_customize_bg); } catch (Resources.NotFoundException e) { // In this case, we will skip drawing background protection } mWallpaperOffset = new WallpaperOffsetInterpolator(); Display display = mLauncher.getWindowManager().getDefaultDisplay(); display.getSize(mDisplaySize); mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx); mFlingThresholdVelocity = (int) (FLING_THRESHOLD_VELOCITY * mDensity); } private void setupLayoutTransition() { // We want to show layout transitions when pages are deleted, to close the gap. mLayoutTransition = new LayoutTransition(); mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING); mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING); mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING); mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING); setLayoutTransition(mLayoutTransition); } void enableLayoutTransitions() { setLayoutTransition(mLayoutTransition); } void disableLayoutTransitions() { setLayoutTransition(null); } @Override protected int getScrollMode() { return SmoothPagedView.X_LARGE_MODE; } @Override public void onChildViewAdded(View parent, View child) { if (!(child instanceof CellLayout)) { throw new IllegalArgumentException("A Workspace can only have CellLayout children."); } CellLayout cl = ((CellLayout) child); cl.setOnInterceptTouchListener(this); cl.setClickable(true); cl.setImportantForAccessibility(ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO); super.onChildViewAdded(parent, child); } protected boolean shouldDrawChild(View child) { final CellLayout cl = (CellLayout) child; return super.shouldDrawChild(child) && (mIsSwitchingState || cl.getShortcutsAndWidgets().getAlpha() > 0 || cl.getBackgroundAlpha() > 0); } /** * @return The open folder on the current screen, or null if there is none */ Folder getOpenFolder() { DragLayer dragLayer = mLauncher.getDragLayer(); int count = dragLayer.getChildCount(); for (int i = 0; i < count; i++) { View child = dragLayer.getChildAt(i); if (child instanceof Folder) { Folder folder = (Folder) child; if (folder.getInfo().opened) return folder; } } return null; } boolean isTouchActive() { return mTouchState != TOUCH_STATE_REST; } public void removeAllWorkspaceScreens() { // Disable all layout transitions before removing all pages to ensure that we don't get the // transition animations competing with us changing the scroll when we add pages or the // custom content screen disableLayoutTransitions(); // Since we increment the current page when we call addCustomContentPage via bindScreens // (and other places), we need to adjust the current page back when we clear the pages if (hasCustomContent()) { removeCustomContentPage(); } // Remove the pages and clear the screen models removeAllViews(); mScreenOrder.clear(); mWorkspaceScreens.clear(); // Re-enable the layout transitions enableLayoutTransitions(); } public long insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) { // Find the index to insert this view into. If the empty screen exists, then // insert it before that. int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID); if (insertIndex < 0) { insertIndex = mScreenOrder.size(); } return insertNewWorkspaceScreen(screenId, insertIndex); } public long insertNewWorkspaceScreen(long screenId) { return insertNewWorkspaceScreen(screenId, getChildCount()); } public long insertNewWorkspaceScreen(long screenId, int insertIndex) { if (mWorkspaceScreens.containsKey(screenId)) { throw new RuntimeException("Screen id " + screenId + " already exists!"); } CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null); newScreen.setOnLongClickListener(mLongClickListener); newScreen.setOnClickListener(mLauncher); newScreen.setSoundEffectsEnabled(false); mWorkspaceScreens.put(screenId, newScreen); mScreenOrder.add(insertIndex, screenId); addView(newScreen, insertIndex); return screenId; } public void createCustomContentPage() { CellLayout customScreen = (CellLayout) mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, null); mWorkspaceScreens.put(CUSTOM_CONTENT_SCREEN_ID, customScreen); mScreenOrder.add(0, CUSTOM_CONTENT_SCREEN_ID); // We want no padding on the custom content customScreen.setPadding(0, 0, 0, 0); addFullScreenPage(customScreen); // Ensure that the current page and default page are maintained. mDefaultPage = mOriginalDefaultPage + 1; // Update the custom content hint mLauncher.updateCustomContentHintVisibility(); if (mRestorePage != INVALID_RESTORE_PAGE) { mRestorePage = mRestorePage + 1; } else { setCurrentPage(getCurrentPage() + 1); } } public void removeCustomContentPage() { CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); if (customScreen == null) { throw new RuntimeException("Expected custom content screen to exist"); } mWorkspaceScreens.remove(CUSTOM_CONTENT_SCREEN_ID); mScreenOrder.remove(CUSTOM_CONTENT_SCREEN_ID); removeView(customScreen); if (mCustomContentCallbacks != null) { mCustomContentCallbacks.onScrollProgressChanged(0); mCustomContentCallbacks.onHide(); } mCustomContentCallbacks = null; // Ensure that the current page and default page are maintained. mDefaultPage = mOriginalDefaultPage - 1; // Update the custom content hint mLauncher.updateCustomContentHintVisibility(); if (mRestorePage != INVALID_RESTORE_PAGE) { mRestorePage = mRestorePage - 1; } else { setCurrentPage(getCurrentPage() - 1); } } public void addToCustomContentPage(View customContent, CustomContentCallbacks callbacks, String description) { if (getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID) < 0) { throw new RuntimeException("Expected custom content screen to exist"); } // Add the custom content to the full screen custom page CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID); int spanX = customScreen.getCountX(); int spanY = customScreen.getCountY(); CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, spanX, spanY); lp.canReorder = false; lp.isFullscreen = true; if (customContent instanceof Insettable) { ((Insettable) customContent).setInsets(mInsets); } customScreen.removeAllViews(); customScreen.addViewToCellLayout(customContent, 0, 0, lp, true); mCustomContentDescription = description; mCustomContentCallbacks = callbacks; } public void addExtraEmptyScreenOnDrag() { boolean lastChildOnScreen = false; boolean childOnFinalScreen = false; if (mDragSourceInternal != null) { if (mDragSourceInternal.getChildCount() == 1) { lastChildOnScreen = true; } CellLayout cl = (CellLayout) mDragSourceInternal.getParent(); if (indexOfChild(cl) == getChildCount() - 1) { childOnFinalScreen = true; } } // If this is the last item on the final screen if (lastChildOnScreen && childOnFinalScreen) { return; } if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); } } public boolean addExtraEmptyScreen() { if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) { insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID); return true; } return false; } public void removeExtraEmptyScreen() { if (hasExtraEmptyScreen()) { CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); removeView(cl); } } public boolean hasExtraEmptyScreen() { int nScreens = getChildCount(); nScreens = nScreens - numCustomPages(); return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1; } public long commitExtraEmptyScreen() { int index = getPageIndexForScreenId(EXTRA_EMPTY_SCREEN_ID); CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID); mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID); mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID); long newId = LauncherAppState.getLauncherProvider().generateNewScreenId(); mWorkspaceScreens.put(newId, cl); mScreenOrder.add(newId); // Update the page indicator marker if (getPageIndicator() != null) { getPageIndicator().updateMarker(index, getPageIndicatorMarker(index)); } // Update the model for the new screen mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); return newId; } public CellLayout getScreenWithId(long screenId) { CellLayout layout = mWorkspaceScreens.get(screenId); return layout; } public long getIdForScreen(CellLayout layout) { Iterator<Long> iter = mWorkspaceScreens.keySet().iterator(); while (iter.hasNext()) { long id = iter.next(); if (mWorkspaceScreens.get(id) == layout) { return id; } } return -1; } public int getPageIndexForScreenId(long screenId) { return indexOfChild(mWorkspaceScreens.get(screenId)); } public long getScreenIdForPageIndex(int index) { if (0 <= index && index < mScreenOrder.size()) { return mScreenOrder.get(index); } return -1; } ArrayList<Long> getScreenOrder() { return mScreenOrder; } public void stripEmptyScreens() { if (isPageMoving()) { mStripScreensOnPageStopMoving = true; return; } int currentPage = getNextPage(); ArrayList<Long> removeScreens = new ArrayList<Long>(); for (Long id : mWorkspaceScreens.keySet()) { CellLayout cl = mWorkspaceScreens.get(id); if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) { removeScreens.add(id); } } // We enforce at least one page to add new items to. In the case that we remove the last // such screen, we convert the last screen to the empty screen int minScreens = 1 + numCustomPages(); int pageShift = 0; for (Long id : removeScreens) { CellLayout cl = mWorkspaceScreens.get(id); mWorkspaceScreens.remove(id); mScreenOrder.remove(id); if (getChildCount() > minScreens) { if (indexOfChild(cl) < currentPage) { pageShift++; } removeView(cl); } else { // if this is the last non-custom content screen, convert it to the empty screen mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl); mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID); } } if (!removeScreens.isEmpty()) { // Update the model if we have changed any screens mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); } if (pageShift >= 0) { setCurrentPage(currentPage - pageShift); } } // See implementation for parameter definition. void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY) { addInScreen(child, container, screenId, x, y, spanX, spanY, false, false); } // At bind time, we use the rank (screenId) to compute x and y for hotseat items. // See implementation for parameter definition. void addInScreenFromBind(View child, long container, long screenId, int x, int y, int spanX, int spanY) { addInScreen(child, container, screenId, x, y, spanX, spanY, false, true); } // See implementation for parameter definition. void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, boolean insert) { addInScreen(child, container, screenId, x, y, spanX, spanY, insert, false); } /** * Adds the specified child in the specified screen. The position and dimension of * the child are defined by x, y, spanX and spanY. * * @param child The child to add in one of the workspace's screens. * @param screenId The screen in which to add the child. * @param x The X position of the child in the screen's grid. * @param y The Y position of the child in the screen's grid. * @param spanX The number of cells spanned horizontally by the child. * @param spanY The number of cells spanned vertically by the child. * @param insert When true, the child is inserted at the beginning of the children list. * @param computeXYFromRank When true, we use the rank (stored in screenId) to compute * the x and y position in which to place hotseat items. Otherwise * we use the x and y position to compute the rank. */ void addInScreen(View child, long container, long screenId, int x, int y, int spanX, int spanY, boolean insert, boolean computeXYFromRank) { if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) { if (getScreenWithId(screenId) == null) { Log.e(TAG, "Skipping child, screenId " + screenId + " not found"); // DEBUGGING - Print out the stack trace to see where we are adding from new Throwable().printStackTrace(); return; } } if (screenId == EXTRA_EMPTY_SCREEN_ID) { // This should never happen throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID"); } final CellLayout layout; if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) { layout = mLauncher.getHotseat().getLayout(); child.setOnKeyListener(null); // Hide folder title in the hotseat if (child instanceof FolderIcon) { ((FolderIcon) child).setTextVisible(false); } if (computeXYFromRank) { x = mLauncher.getHotseat().getCellXFromOrder((int) screenId); y = mLauncher.getHotseat().getCellYFromOrder((int) screenId); } else { screenId = mLauncher.getHotseat().getOrderInHotseat(x, y); } } else { // Show folder title if not in the hotseat if (child instanceof FolderIcon) { ((FolderIcon) child).setTextVisible(true); } layout = getScreenWithId(screenId); child.setOnKeyListener(new IconKeyEventListener()); } ViewGroup.LayoutParams genericLp = child.getLayoutParams(); CellLayout.LayoutParams lp; if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) { lp = new CellLayout.LayoutParams(x, y, spanX, spanY); } else { lp = (CellLayout.LayoutParams) genericLp; lp.cellX = x; lp.cellY = y; lp.cellHSpan = spanX; lp.cellVSpan = spanY; } if (spanX < 0 && spanY < 0) { lp.isLockedToGrid = false; } // Get the canonical child id to uniquely represent this view in this screen int childId = LauncherModel.getCellLayoutChildId(container, screenId, x, y, spanX, spanY); boolean markCellsAsOccupied = !(child instanceof Folder); if (!layout.addViewToCellLayout(child, insert ? 0 : -1, childId, lp, markCellsAsOccupied)) { // TODO: This branch occurs when the workspace is adding views // outside of the defined grid // maybe we should be deleting these items from the LauncherModel? Launcher.addDumpLog(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout", true); } if (!(child instanceof Folder)) { child.setHapticFeedbackEnabled(false); child.setOnLongClickListener(mLongClickListener); } if (child instanceof DropTarget) { mDragController.addDropTarget((DropTarget) child); } } /** * Called directly from a CellLayout (not by the framework), after we've been added as a * listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout * that it should intercept touch events, which is not something that is normally supported. */ @Override public boolean onTouch(View v, MotionEvent event) { return (isSmall() || !isFinishedSwitchingState()) || (!isSmall() && indexOfChild(v) != mCurrentPage); } public boolean isSwitchingState() { return mIsSwitchingState; } /** This differs from isSwitchingState in that we take into account how far the transition * has completed. */ public boolean isFinishedSwitchingState() { return !mIsSwitchingState || (mTransitionProgress > 0.5f); } protected void onWindowVisibilityChanged(int visibility) { mLauncher.onWindowVisibilityChanged(visibility); } @Override public boolean dispatchUnhandledMove(View focused, int direction) { if (isSmall() || !isFinishedSwitchingState()) { // when the home screens are shrunken, shouldn't allow side-scrolling return false; } return super.dispatchUnhandledMove(focused, direction); } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { switch (ev.getAction() & MotionEvent.ACTION_MASK) { case MotionEvent.ACTION_DOWN: mXDown = ev.getX(); mYDown = ev.getY(); mTouchDownTime = System.currentTimeMillis(); break; case MotionEvent.ACTION_POINTER_UP: case MotionEvent.ACTION_UP: if (mTouchState == TOUCH_STATE_REST) { final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage); if (!currentPage.lastDownOnOccupiedCell()) { onWallpaperTap(ev); } } } return super.onInterceptTouchEvent(ev); } protected void reinflateWidgetsIfNecessary() { final int clCount = getChildCount(); for (int i = 0; i < clCount; i++) { CellLayout cl = (CellLayout) getChildAt(i); ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets(); final int itemCount = swc.getChildCount(); for (int j = 0; j < itemCount; j++) { View v = swc.getChildAt(j); if (v.getTag() instanceof LauncherAppWidgetInfo) { LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag(); LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView; if (lahv != null && lahv.orientationChangedSincedInflation()) { mLauncher.removeAppWidget(info); // Remove the current widget which is inflated with the wrong orientation cl.removeView(lahv); mLauncher.bindAppWidget(info); } } } } } @Override protected void determineScrollingStart(MotionEvent ev) { if (!isFinishedSwitchingState()) return; float deltaX = ev.getX() - mXDown; float absDeltaX = Math.abs(deltaX); float absDeltaY = Math.abs(ev.getY() - mYDown); if (Float.compare(absDeltaX, 0f) == 0) return; float slope = absDeltaY / absDeltaX; float theta = (float) Math.atan(slope); if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) { cancelCurrentPageLongPress(); } boolean passRightSwipesToCustomContent = (mTouchDownTime - mCustomContentShowTime) > CUSTOM_CONTENT_GESTURE_DELAY; boolean swipeInIgnoreDirection = isLayoutRtl() ? deltaX < 0 : deltaX > 0; if (swipeInIgnoreDirection && getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID && passRightSwipesToCustomContent) { // Pass swipes to the right to the custom content page. return; } if (theta > MAX_SWIPE_ANGLE) { // Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace return; } else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) { // Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to // increase the touch slop to make it harder to begin scrolling the workspace. This // results in vertically scrolling widgets to more easily. The higher the angle, the // more we increase touch slop. theta -= START_DAMPING_TOUCH_SLOP_ANGLE; float extraRatio = (float) Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE))); super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio); } else { // Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special super.determineScrollingStart(ev); } } protected void onPageBeginMoving() { super.onPageBeginMoving(); if (isHardwareAccelerated()) { updateChildrenLayersEnabled(false); } else { if (mNextPage != INVALID_PAGE) { // we're snapping to a particular screen enableChildrenCache(mCurrentPage, mNextPage); } else { // this is when user is actively dragging a particular screen, they might // swipe it either left or right (but we won't advance by more than one screen) enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1); } } // Only show page outlines as we pan if we are on large screen if (LauncherAppState.getInstance().isScreenLarge()) { showOutlines(); } // If we are not fading in adjacent screens, we still need to restore the alpha in case the // user scrolls while we are transitioning (should not affect dispatchDraw optimizations) if (!mWorkspaceFadeInAdjacentScreens) { for (int i = 0; i < getChildCount(); ++i) { ((CellLayout) getPageAt(i)).setShortcutAndWidgetAlpha(1f); } } } protected void onPageEndMoving() { super.onPageEndMoving(); if (isHardwareAccelerated()) { updateChildrenLayersEnabled(false); } else { clearChildrenCache(); } if (mDragController.isDragging()) { if (isSmall()) { // If we are in springloaded mode, then force an event to check if the current touch // is under a new page (to scroll to) mDragController.forceTouchMove(); } } else { // If we are not mid-dragging, hide the page outlines if we are on a large screen if (LauncherAppState.getInstance().isScreenLarge()) { hideOutlines(); } } if (mDelayedResizeRunnable != null) { mDelayedResizeRunnable.run(); mDelayedResizeRunnable = null; } if (mDelayedSnapToPageRunnable != null) { mDelayedSnapToPageRunnable.run(); mDelayedSnapToPageRunnable = null; } if (mStripScreensOnPageStopMoving) { stripEmptyScreens(); mStripScreensOnPageStopMoving = false; } } @Override protected void notifyPageSwitchListener() { super.notifyPageSwitchListener(); Launcher.setScreen(mCurrentPage); if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) { mCustomContentShowing = true; if (mCustomContentCallbacks != null) { mCustomContentCallbacks.onShow(); mCustomContentShowTime = System.currentTimeMillis(); mLauncher.updateVoiceButtonProxyVisible(false); } } else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) { mCustomContentShowing = false; if (mCustomContentCallbacks != null) { mCustomContentCallbacks.onHide(); mLauncher.resetQSBScroll(); mLauncher.updateVoiceButtonProxyVisible(false); } } if (getPageIndicator() != null) { getPageIndicator().setContentDescription(getPageIndicatorDescription()); } } protected CustomContentCallbacks getCustomContentCallbacks() { return mCustomContentCallbacks; } protected void setWallpaperDimension() { String spKey = WallpaperCropActivity.getSharedPreferencesKey(); SharedPreferences sp = mLauncher.getSharedPreferences(spKey, Context.MODE_PRIVATE); WallpaperPickerActivity.suggestWallpaperDimension(mLauncher.getResources(), sp, mLauncher.getWindowManager(), mWallpaperManager); } protected void snapToPage(int whichPage, Runnable r) { if (mDelayedSnapToPageRunnable != null) { mDelayedSnapToPageRunnable.run(); } mDelayedSnapToPageRunnable = r; snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION); } protected void snapToScreenId(long screenId, Runnable r) { snapToPage(getPageIndexForScreenId(screenId), r); } class WallpaperOffsetInterpolator implements Choreographer.FrameCallback { float mFinalOffset = 0.0f; float mCurrentOffset = 0.5f; // to force an initial update boolean mWaitingForUpdate; Choreographer mChoreographer; Interpolator mInterpolator; boolean mAnimating; long mAnimationStartTime; float mAnimationStartOffset; private final int ANIMATION_DURATION = 250; // Don't use all the wallpaper for parallax until you have at least this many pages private final int MIN_PARALLAX_PAGE_SPAN = 3; int mNumScreens; public WallpaperOffsetInterpolator() { mChoreographer = Choreographer.getInstance(); mInterpolator = new DecelerateInterpolator(1.5f); } @Override public void doFrame(long frameTimeNanos) { updateOffset(false); } private void updateOffset(boolean force) { if (mWaitingForUpdate || force) { mWaitingForUpdate = false; if (computeScrollOffset() && mWindowToken != null) { try { mWallpaperManager.setWallpaperOffsets(mWindowToken, mWallpaperOffset.getCurrX(), 0.5f); setWallpaperOffsetSteps(); } catch (IllegalArgumentException e) { Log.e(TAG, "Error updating wallpaper offset: " + e); } } } } public boolean computeScrollOffset() { final float oldOffset = mCurrentOffset; if (mAnimating) { long durationSinceAnimation = System.currentTimeMillis() - mAnimationStartTime; float t0 = durationSinceAnimation / (float) ANIMATION_DURATION; float t1 = mInterpolator.getInterpolation(t0); mCurrentOffset = mAnimationStartOffset + (mFinalOffset - mAnimationStartOffset) * t1; mAnimating = durationSinceAnimation < ANIMATION_DURATION; } else { mCurrentOffset = mFinalOffset; } if (Math.abs(mCurrentOffset - mFinalOffset) > 0.0000001f) { scheduleUpdate(); } if (Math.abs(oldOffset - mCurrentOffset) > 0.0000001f) { return true; } return false; } private float wallpaperOffsetForCurrentScroll() { if (getChildCount() <= 1) { return 0; } // Exclude the leftmost page int emptyExtraPages = numEmptyScreensToIgnore(); int firstIndex = numCustomPages(); // Exclude the last extra empty screen (if we have > MIN_PARALLAX_PAGE_SPAN pages) int lastIndex = getChildCount() - 1 - emptyExtraPages; if (isLayoutRtl()) { int temp = firstIndex; firstIndex = lastIndex; lastIndex = temp; } int firstPageScrollX = getScrollForPage(firstIndex); int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX; if (scrollRange == 0) { return 0; } else { // TODO: do different behavior if it's a live wallpaper? // Sometimes the left parameter of the pages is animated during a layout transition; // this parameter offsets it to keep the wallpaper from animating as well int offsetForLayoutTransitionAnimation = isLayoutRtl() ? getPageAt(getChildCount() - 1).getLeft() - getFirstChildLeft() : 0; int adjustedScroll = getScrollX() - firstPageScrollX - offsetForLayoutTransitionAnimation; float offset = Math.min(1, adjustedScroll / (float) scrollRange); offset = Math.max(0, offset); // Don't use up all the wallpaper parallax until you have at least // MIN_PARALLAX_PAGE_SPAN pages int numScrollingPages = getNumScreensExcludingEmptyAndCustom(); int parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1); // On RTL devices, push the wallpaper offset to the right if we don't have enough // pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN) int padding = isLayoutRtl() ? parallaxPageSpan - numScrollingPages + 1 : 0; return offset * (padding + numScrollingPages - 1) / parallaxPageSpan; } } private int numEmptyScreensToIgnore() { int numScrollingPages = getChildCount() - numCustomPages(); if (numScrollingPages >= MIN_PARALLAX_PAGE_SPAN && hasExtraEmptyScreen()) { return 1; } else { return 0; } } private int getNumScreensExcludingEmptyAndCustom() { int numScrollingPages = getChildCount() - numEmptyScreensToIgnore() - numCustomPages(); return numScrollingPages; } public void syncWithScroll() { float offset = wallpaperOffsetForCurrentScroll(); mWallpaperOffset.setFinalX(offset); updateOffset(true); } public float getCurrX() { return mCurrentOffset; } public float getFinalX() { return mFinalOffset; } private void animateToFinal() { mAnimating = true; mAnimationStartOffset = mCurrentOffset; mAnimationStartTime = System.currentTimeMillis(); } private void setWallpaperOffsetSteps() { // Set wallpaper offset steps (1 / (number of screens - 1)) mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f); } public void setFinalX(float x) { scheduleUpdate(); mFinalOffset = Math.max(0f, Math.min(x, 1.0f)); if (getNumScreensExcludingEmptyAndCustom() != mNumScreens) { if (mNumScreens > 0) { // Don't animate if we're going from 0 screens animateToFinal(); } mNumScreens = getNumScreensExcludingEmptyAndCustom(); } } private void scheduleUpdate() { if (!mWaitingForUpdate) { mChoreographer.postFrameCallback(this); mWaitingForUpdate = true; } } public void jumpToFinal() { mCurrentOffset = mFinalOffset; } } @Override public void computeScroll() { super.computeScroll(); mWallpaperOffset.syncWithScroll(); } void showOutlines() { if (!isSmall() && !mIsSwitchingState) { if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); mChildrenOutlineFadeInAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 1.0f); mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION); mChildrenOutlineFadeInAnimation.start(); } } void hideOutlines() { if (!isSmall() && !mIsSwitchingState) { if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel(); if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel(); mChildrenOutlineFadeOutAnimation = LauncherAnimUtils.ofFloat(this, "childrenOutlineAlpha", 0.0f); mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION); mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY); mChildrenOutlineFadeOutAnimation.start(); } } public void showOutlinesTemporarily() { if (!mIsPageMoving && !isTouchActive()) { snapToPage(mCurrentPage); } } public void setChildrenOutlineAlpha(float alpha) { mChildrenOutlineAlpha = alpha; for (int i = 0; i < getChildCount(); i++) { CellLayout cl = (CellLayout) getChildAt(i); cl.setBackgroundAlpha(alpha); } } public float getChildrenOutlineAlpha() { return mChildrenOutlineAlpha; } void disableBackground() { mDrawBackground = false; } void enableBackground() { mDrawBackground = true; } private void animateBackgroundGradient(float finalAlpha, boolean animated) { if (mBackground == null) return; if (mBackgroundFadeInAnimation != null) { mBackgroundFadeInAnimation.cancel(); mBackgroundFadeInAnimation = null; } if (mBackgroundFadeOutAnimation != null) { mBackgroundFadeOutAnimation.cancel(); mBackgroundFadeOutAnimation = null; } float startAlpha = getBackgroundAlpha(); if (finalAlpha != startAlpha) { if (animated) { mBackgroundFadeOutAnimation = LauncherAnimUtils.ofFloat(this, startAlpha, finalAlpha); mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() { public void onAnimationUpdate(ValueAnimator animation) { setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue()); } }); mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f)); mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION); mBackgroundFadeOutAnimation.start(); } else { setBackgroundAlpha(finalAlpha); } } } public void setBackgroundAlpha(float alpha) { if (alpha != mBackgroundAlpha) { mBackgroundAlpha = alpha; invalidate(); } } public float getBackgroundAlpha() { return mBackgroundAlpha; } float backgroundAlphaInterpolator(float r) { float pivotA = 0.1f; float pivotB = 0.4f; if (r < pivotA) { return 0; } else if (r > pivotB) { return 1.0f; } else { return (r - pivotA) / (pivotB - pivotA); } } private void updatePageAlphaValues(int screenCenter) { boolean isInOverscroll = mOverScrollX < 0 || mOverScrollX > mMaxScrollX; if (mWorkspaceFadeInAdjacentScreens && mState == State.NORMAL && !mIsSwitchingState && !isInOverscroll) { for (int i = 0; i < getChildCount(); i++) { CellLayout child = (CellLayout) getChildAt(i); if (child != null) { float scrollProgress = getScrollProgress(screenCenter, child, i); float alpha = 1 - Math.abs(scrollProgress); child.getShortcutsAndWidgets().setAlpha(alpha); if (!mIsDragOccuring) { child.setBackgroundAlphaMultiplier(backgroundAlphaInterpolator(Math.abs(scrollProgress))); } else { child.setBackgroundAlphaMultiplier(1f); } } } } } private void setChildrenBackgroundAlphaMultipliers(float a) { for (int i = 0; i < getChildCount(); i++) { CellLayout child = (CellLayout) getChildAt(i); child.setBackgroundAlphaMultiplier(a); } } public boolean hasCustomContent() { return (mScreenOrder.size() > 0 && mScreenOrder.get(0) == CUSTOM_CONTENT_SCREEN_ID); } public int numCustomPages() { return hasCustomContent() ? 1 : 0; } public boolean isOnOrMovingToCustomContent() { return hasCustomContent() && getNextPage() == 0; } private void updateStateForCustomContent(int screenCenter) { float translationX = 0; float progress = 0; if (hasCustomContent()) { int index = mScreenOrder.indexOf(CUSTOM_CONTENT_SCREEN_ID); int scrollDelta = getScrollX() - getScrollForPage(index) - getLayoutTransitionOffsetForPage(index); float scrollRange = getScrollForPage(index + 1) - getScrollForPage(index); translationX = scrollRange - scrollDelta; progress = (scrollRange - scrollDelta) / scrollRange; if (isLayoutRtl()) { translationX = Math.min(0, translationX); } else { translationX = Math.max(0, translationX); } progress = Math.max(0, progress); } if (Float.compare(progress, mLastCustomContentScrollProgress) == 0) return; CellLayout cc = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); if (progress > 0 && cc.getVisibility() != VISIBLE && !isSmall()) { cc.setVisibility(VISIBLE); } mLastCustomContentScrollProgress = progress; setBackgroundAlpha(progress * 0.8f); if (mLauncher.getHotseat() != null) { mLauncher.getHotseat().setTranslationX(translationX); } if (getPageIndicator() != null) { getPageIndicator().setTranslationX(translationX); } if (mCustomContentCallbacks != null) { mCustomContentCallbacks.onScrollProgressChanged(progress); } } @Override protected OnClickListener getPageIndicatorClickListener() { AccessibilityManager am = (AccessibilityManager) getContext() .getSystemService(Context.ACCESSIBILITY_SERVICE); if (!am.isTouchExplorationEnabled()) { return null; } OnClickListener listener = new OnClickListener() { @Override public void onClick(View arg0) { enterOverviewMode(); } }; return listener; } @Override protected void screenScrolled(int screenCenter) { final boolean isRtl = isLayoutRtl(); super.screenScrolled(screenCenter); updatePageAlphaValues(screenCenter); updateStateForCustomContent(screenCenter); enableHwLayersOnVisiblePages(); boolean shouldOverScroll = (mOverScrollX < 0 && (!hasCustomContent() || isLayoutRtl())) || (mOverScrollX > mMaxScrollX && (!hasCustomContent() || !isLayoutRtl())); if (shouldOverScroll) { int index = 0; float pivotX = 0f; final float leftBiasedPivot = 0.25f; final float rightBiasedPivot = 0.75f; final int lowerIndex = 0; final int upperIndex = getChildCount() - 1; final boolean isLeftPage = mOverScrollX < 0; index = (!isRtl && isLeftPage) || (isRtl && !isLeftPage) ? lowerIndex : upperIndex; pivotX = isLeftPage ? rightBiasedPivot : leftBiasedPivot; CellLayout cl = (CellLayout) getChildAt(index); float scrollProgress = getScrollProgress(screenCenter, cl, index); cl.setOverScrollAmount(Math.abs(scrollProgress), isLeftPage); float rotation = -WORKSPACE_OVERSCROLL_ROTATION * scrollProgress; cl.setRotationY(rotation); if (!mOverscrollTransformsSet || Float.compare(mLastOverscrollPivotX, pivotX) != 0) { mOverscrollTransformsSet = true; mLastOverscrollPivotX = pivotX; cl.setCameraDistance(mDensity * mCameraDistance); cl.setPivotX(cl.getMeasuredWidth() * pivotX); cl.setPivotY(cl.getMeasuredHeight() * 0.5f); cl.setOverscrollTransformsDirty(true); } } else { if (mOverscrollTransformsSet) { mOverscrollTransformsSet = false; ((CellLayout) getChildAt(0)).resetOverscrollTransforms(); ((CellLayout) getChildAt(getChildCount() - 1)).resetOverscrollTransforms(); } } } @Override protected void overScroll(float amount) { acceleratedOverScroll(amount); } protected void onAttachedToWindow() { super.onAttachedToWindow(); mWindowToken = getWindowToken(); computeScroll(); mDragController.setWindowToken(mWindowToken); } protected void onDetachedFromWindow() { super.onDetachedFromWindow(); mWindowToken = null; } protected void onResume() { if (getPageIndicator() != null) { // In case accessibility state has changed, we need to perform this on every // attach to window OnClickListener listener = getPageIndicatorClickListener(); if (listener != null) { getPageIndicator().setOnClickListener(listener); } } AccessibilityManager am = (AccessibilityManager) getContext() .getSystemService(Context.ACCESSIBILITY_SERVICE); sAccessibilityEnabled = am.isEnabled(); } @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { mWallpaperOffset.syncWithScroll(); mWallpaperOffset.jumpToFinal(); } super.onLayout(changed, left, top, right, bottom); } @Override protected void onDraw(Canvas canvas) { // Draw the background gradient if necessary if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) { int alpha = (int) (mBackgroundAlpha * 255); mBackground.setAlpha(alpha); mBackground.setBounds(getScrollX(), 0, getScrollX() + getMeasuredWidth(), getMeasuredHeight()); mBackground.draw(canvas); } super.onDraw(canvas); // Call back to LauncherModel to finish binding after the first draw post(mBindPages); } boolean isDrawingBackgroundGradient() { return (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground); } @Override protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { if (!mLauncher.isAllAppsVisible()) { final Folder openFolder = getOpenFolder(); if (openFolder != null) { return openFolder.requestFocus(direction, previouslyFocusedRect); } else { return super.onRequestFocusInDescendants(direction, previouslyFocusedRect); } } return false; } @Override public int getDescendantFocusability() { if (isSmall()) { return ViewGroup.FOCUS_BLOCK_DESCENDANTS; } return super.getDescendantFocusability(); } @Override public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { if (!mLauncher.isAllAppsVisible()) { final Folder openFolder = getOpenFolder(); if (openFolder != null) { openFolder.addFocusables(views, direction); } else { super.addFocusables(views, direction, focusableMode); } } } public boolean isSmall() { return mState == State.SMALL || mState == State.SPRING_LOADED || mState == State.OVERVIEW; } void enableChildrenCache(int fromPage, int toPage) { if (fromPage > toPage) { final int temp = fromPage; fromPage = toPage; toPage = temp; } final int screenCount = getChildCount(); fromPage = Math.max(fromPage, 0); toPage = Math.min(toPage, screenCount - 1); for (int i = fromPage; i <= toPage; i++) { final CellLayout layout = (CellLayout) getChildAt(i); layout.setChildrenDrawnWithCacheEnabled(true); layout.setChildrenDrawingCacheEnabled(true); } } void clearChildrenCache() { final int screenCount = getChildCount(); for (int i = 0; i < screenCount; i++) { final CellLayout layout = (CellLayout) getChildAt(i); layout.setChildrenDrawnWithCacheEnabled(false); // In software mode, we don't want the items to continue to be drawn into bitmaps if (!isHardwareAccelerated()) { layout.setChildrenDrawingCacheEnabled(false); } } } private void updateChildrenLayersEnabled(boolean force) { boolean small = mState == State.SMALL || mState == State.OVERVIEW || mIsSwitchingState; boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageMoving(); if (enableChildrenLayers != mChildrenLayersEnabled) { mChildrenLayersEnabled = enableChildrenLayers; if (mChildrenLayersEnabled) { enableHwLayersOnVisiblePages(); } else { for (int i = 0; i < getPageCount(); i++) { final CellLayout cl = (CellLayout) getChildAt(i); cl.enableHardwareLayer(false); } } } } private void enableHwLayersOnVisiblePages() { if (mChildrenLayersEnabled) { final int screenCount = getChildCount(); getVisiblePages(mTempVisiblePagesRange); int leftScreen = mTempVisiblePagesRange[0]; int rightScreen = mTempVisiblePagesRange[1]; if (leftScreen == rightScreen) { // make sure we're caching at least two pages always if (rightScreen < screenCount - 1) { rightScreen++; } else if (leftScreen > 0) { leftScreen--; } } final CellLayout customScreen = mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID); for (int i = 0; i < screenCount; i++) { final CellLayout layout = (CellLayout) getPageAt(i); // enable layers between left and right screen inclusive, except for the // customScreen, which may animate its content during transitions. boolean enableLayer = layout != customScreen && leftScreen <= i && i <= rightScreen && shouldDrawChild(layout); layout.enableHardwareLayer(enableLayer); } } } public void buildPageHardwareLayers() { // force layers to be enabled just for the call to buildLayer updateChildrenLayersEnabled(true); if (getWindowToken() != null) { final int childCount = getChildCount(); for (int i = 0; i < childCount; i++) { CellLayout cl = (CellLayout) getChildAt(i); cl.buildHardwareLayer(); } } updateChildrenLayersEnabled(false); } protected void onWallpaperTap(MotionEvent ev) { final int[] position = mTempCell; getLocationOnScreen(position); int pointerIndex = ev.getActionIndex(); position[0] += (int) ev.getX(pointerIndex); position[1] += (int) ev.getY(pointerIndex); mWallpaperManager.sendWallpaperCommand(getWindowToken(), ev.getAction() == MotionEvent.ACTION_UP ? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP, position[0], position[1], 0, null); } /* * This interpolator emulates the rate at which the perceived scale of an object changes * as its distance from a camera increases. When this interpolator is applied to a scale * animation on a view, it evokes the sense that the object is shrinking due to moving away * from the camera. */ static class ZInterpolator implements TimeInterpolator { private float focalLength; public ZInterpolator(float foc) { focalLength = foc; } public float getInterpolation(float input) { return (1.0f - focalLength / (focalLength + input)) / (1.0f - focalLength / (focalLength + 1.0f)); } } /* * The exact reverse of ZInterpolator. */ static class InverseZInterpolator implements TimeInterpolator { private ZInterpolator zInterpolator; public InverseZInterpolator(float foc) { zInterpolator = new ZInterpolator(foc); } public float getInterpolation(float input) { return 1 - zInterpolator.getInterpolation(1 - input); } } /* * ZInterpolator compounded with an ease-out. */ static class ZoomOutInterpolator implements TimeInterpolator { private final DecelerateInterpolator decelerate = new DecelerateInterpolator(0.75f); private final ZInterpolator zInterpolator = new ZInterpolator(0.13f); public float getInterpolation(float input) { return decelerate.getInterpolation(zInterpolator.getInterpolation(input)); } } /* * InvereZInterpolator compounded with an ease-out. */ static class ZoomInInterpolator implements TimeInterpolator { private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f); private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f); public float getInterpolation(float input) { return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input)); } } private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator(); /* * * We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we * start a drag in Launcher, regardless of whether the drag has ever entered the Workspace * * These methods mark the appropriate pages as accepting drops (which alters their visual * appearance). * */ public void onDragStartedWithItem(View v) { final Canvas canvas = new Canvas(); // The outline is used to visualize where the item will land if dropped mDragOutline = createDragOutline(v, canvas, DRAG_BITMAP_PADDING); } public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) { final Canvas canvas = new Canvas(); int[] size = estimateItemSize(info.spanX, info.spanY, info, false); // The outline is used to visualize where the item will land if dropped mDragOutline = createDragOutline(b, canvas, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha); } public void exitWidgetResizeMode() { DragLayer dragLayer = mLauncher.getDragLayer(); dragLayer.clearAllResizeFrames(); } private void initAnimationArrays() { final int childCount = getChildCount(); if (mLastChildCount == childCount) return; mOldBackgroundAlphas = new float[childCount]; mOldAlphas = new float[childCount]; mNewBackgroundAlphas = new float[childCount]; mNewAlphas = new float[childCount]; } Animator getChangeStateAnimation(final State state, boolean animated) { return getChangeStateAnimation(state, animated, 0, -1); } @Override protected void getOverviewModePages(int[] range) { int start = numCustomPages(); int end = getChildCount() - 1; range[0] = Math.max(0, Math.min(start, getChildCount() - 1)); range[1] = Math.max(0, end); } protected void onStartReordering() { super.onStartReordering(); showOutlines(); // Reordering handles its own animations, disable the automatic ones. disableLayoutTransitions(); } protected void onEndReordering() { super.onEndReordering(); hideOutlines(); mScreenOrder.clear(); int count = getChildCount(); for (int i = 0; i < count; i++) { CellLayout cl = ((CellLayout) getChildAt(i)); mScreenOrder.add(getIdForScreen(cl)); } mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder); // Re-enable auto layout transitions for page deletion. enableLayoutTransitions(); } public boolean isInOverviewMode() { return mState == State.OVERVIEW; } public boolean enterOverviewMode() { if (mTouchState != TOUCH_STATE_REST) { return false; } enableOverviewMode(true, -1, true); return true; } public void exitOverviewMode(boolean animated) { exitOverviewMode(-1, animated); } public void exitOverviewMode(int snapPage, boolean animated) { enableOverviewMode(false, snapPage, animated); } private void enableOverviewMode(boolean enable, int snapPage, boolean animated) { State finalState = Workspace.State.OVERVIEW; if (!enable) { finalState = Workspace.State.NORMAL; } Animator workspaceAnim = getChangeStateAnimation(finalState, animated, 0, snapPage); if (workspaceAnim != null) { onTransitionPrepare(); workspaceAnim.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator arg0) { onTransitionEnd(); } }); workspaceAnim.start(); } } int getOverviewModeTranslationY() { int childHeight = getNormalChildHeight(); int viewPortHeight = getViewportHeight(); int scaledChildHeight = (int) (mOverviewModeShrinkFactor * childHeight); int offset = (viewPortHeight - scaledChildHeight) / 2; int offsetDelta = mOverviewModePageOffset - offset + mInsets.top; return offsetDelta; } boolean shouldVoiceButtonProxyBeVisible() { if (isOnOrMovingToCustomContent()) { return false; } if (mState != State.NORMAL) { return false; } return true; } public void updateInteractionForState() { if (mState != State.NORMAL) { mLauncher.onInteractionBegin(); } else { mLauncher.onInteractionEnd(); } } private void setState(State state) { mState = state; updateInteractionForState(); updateAccessibilityFlags(); } private void updateAccessibilityFlags() { int accessible = mState == State.NORMAL ? ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_YES : ViewCompat.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS; setImportantForAccessibility(accessible); } Animator getChangeStateAnimation(final State state, boolean animated, int delay, int snapPage) { if (mState == state) { return null; } // Initialize animation arrays for the first time if necessary initAnimationArrays(); AnimatorSet anim = animated ? LauncherAnimUtils.createAnimatorSet() : null; final State oldState = mState; final boolean oldStateIsNormal = (oldState == State.NORMAL); final boolean oldStateIsSpringLoaded = (oldState == State.SPRING_LOADED); final boolean oldStateIsSmall = (oldState == State.SMALL); final boolean oldStateIsOverview = (oldState == State.OVERVIEW); setState(state); final boolean stateIsNormal = (state == State.NORMAL); final boolean stateIsSpringLoaded = (state == State.SPRING_LOADED); final boolean stateIsSmall = (state == State.SMALL); final boolean stateIsOverview = (state == State.OVERVIEW); float finalBackgroundAlpha = (stateIsSpringLoaded || stateIsOverview) ? 1.0f : 0f; float finalHotseatAndPageIndicatorAlpha = (stateIsOverview || stateIsSmall) ? 0f : 1f; float finalOverviewPanelAlpha = stateIsOverview ? 1f : 0f; float finalSearchBarAlpha = !stateIsNormal ? 0f : 1f; float finalWorkspaceTranslationY = stateIsOverview ? getOverviewModeTranslationY() : 0; boolean workspaceToAllApps = (oldStateIsNormal && stateIsSmall); boolean allAppsToWorkspace = (oldStateIsSmall && stateIsNormal); boolean workspaceToOverview = (oldStateIsNormal && stateIsOverview); boolean overviewToWorkspace = (oldStateIsOverview && stateIsNormal); mNewScale = 1.0f; if (oldStateIsOverview) { disableFreeScroll(snapPage); } else if (stateIsOverview) { enableFreeScroll(); } if (state != State.NORMAL) { if (stateIsSpringLoaded) { mNewScale = mSpringLoadedShrinkFactor; } else if (stateIsOverview) { mNewScale = mOverviewModeShrinkFactor; } else if (stateIsSmall) { mNewScale = mOverviewModeShrinkFactor - 0.3f; } if (workspaceToAllApps) { updateChildrenLayersEnabled(false); } } final int duration; if (workspaceToAllApps) { duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime); } else if (workspaceToOverview || overviewToWorkspace) { duration = getResources().getInteger(R.integer.config_overviewTransitionTime); } else { duration = getResources().getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime); } for (int i = 0; i < getChildCount(); i++) { final CellLayout cl = (CellLayout) getChildAt(i); boolean isCurrentPage = (i == getNextPage()); float initialAlpha = cl.getShortcutsAndWidgets().getAlpha(); float finalAlpha = stateIsSmall ? 0f : 1f; // If we are animating to/from the small state, then hide the side pages and fade the // current page in if (!mIsSwitchingState) { if (workspaceToAllApps || allAppsToWorkspace) { if (allAppsToWorkspace && isCurrentPage) { initialAlpha = 0f; } else if (!isCurrentPage) { initialAlpha = finalAlpha = 0f; } cl.setShortcutAndWidgetAlpha(initialAlpha); } } mOldAlphas[i] = initialAlpha; mNewAlphas[i] = finalAlpha; if (animated) { mOldBackgroundAlphas[i] = cl.getBackgroundAlpha(); mNewBackgroundAlphas[i] = finalBackgroundAlpha; } else { cl.setBackgroundAlpha(finalBackgroundAlpha); cl.setShortcutAndWidgetAlpha(finalAlpha); } } final View searchBar = mLauncher.getQsbBar(); final View overviewPanel = mLauncher.getOverviewPanel(); final View hotseat = mLauncher.getHotseat(); if (animated) { anim.setDuration(duration); LauncherViewPropertyAnimator scale = new LauncherViewPropertyAnimator(this); scale.scaleX(mNewScale).scaleY(mNewScale).translationY(finalWorkspaceTranslationY) .setInterpolator(mZoomInInterpolator); anim.play(scale); for (int index = 0; index < getChildCount(); index++) { final int i = index; final CellLayout cl = (CellLayout) getChildAt(i); float currentAlpha = cl.getShortcutsAndWidgets().getAlpha(); if (mOldAlphas[i] == 0 && mNewAlphas[i] == 0) { cl.setBackgroundAlpha(mNewBackgroundAlphas[i]); cl.setShortcutAndWidgetAlpha(mNewAlphas[i]); } else { if (mOldAlphas[i] != mNewAlphas[i] || currentAlpha != mNewAlphas[i]) { LauncherViewPropertyAnimator alphaAnim = new LauncherViewPropertyAnimator( cl.getShortcutsAndWidgets()); alphaAnim.alpha(mNewAlphas[i]).setInterpolator(mZoomInInterpolator); anim.play(alphaAnim); } if (mOldBackgroundAlphas[i] != 0 || mNewBackgroundAlphas[i] != 0) { ValueAnimator bgAnim = LauncherAnimUtils.ofFloat(cl, 0f, 1f); bgAnim.setInterpolator(mZoomInInterpolator); bgAnim.addUpdateListener(new LauncherAnimatorUpdateListener() { public void onAnimationUpdate(float a, float b) { cl.setBackgroundAlpha(a * mOldBackgroundAlphas[i] + b * mNewBackgroundAlphas[i]); } }); anim.play(bgAnim); } } } ObjectAnimator pageIndicatorAlpha = null; if (getPageIndicator() != null) { pageIndicatorAlpha = ObjectAnimator.ofFloat(getPageIndicator(), "alpha", finalHotseatAndPageIndicatorAlpha); } ObjectAnimator hotseatAlpha = ObjectAnimator.ofFloat(hotseat, "alpha", finalHotseatAndPageIndicatorAlpha); ObjectAnimator searchBarAlpha = ObjectAnimator.ofFloat(searchBar, "alpha", finalSearchBarAlpha); ObjectAnimator overviewPanelAlpha = ObjectAnimator.ofFloat(overviewPanel, "alpha", finalOverviewPanelAlpha); overviewPanelAlpha.addListener(new AlphaUpdateListener(overviewPanel)); hotseatAlpha.addListener(new AlphaUpdateListener(hotseat)); searchBarAlpha.addListener(new AlphaUpdateListener(searchBar)); if (workspaceToOverview) { hotseatAlpha.setInterpolator(new DecelerateInterpolator(2)); } else if (overviewToWorkspace) { overviewPanelAlpha.setInterpolator(new DecelerateInterpolator(2)); } if (getPageIndicator() != null) { pageIndicatorAlpha.addListener(new AlphaUpdateListener(getPageIndicator())); } anim.play(overviewPanelAlpha); anim.play(hotseatAlpha); anim.play(searchBarAlpha); anim.play(pageIndicatorAlpha); anim.setStartDelay(delay); } else { overviewPanel.setAlpha(finalOverviewPanelAlpha); AlphaUpdateListener.updateVisibility(overviewPanel); hotseat.setAlpha(finalHotseatAndPageIndicatorAlpha); AlphaUpdateListener.updateVisibility(hotseat); if (getPageIndicator() != null) { getPageIndicator().setAlpha(finalHotseatAndPageIndicatorAlpha); AlphaUpdateListener.updateVisibility(getPageIndicator()); } searchBar.setAlpha(finalSearchBarAlpha); AlphaUpdateListener.updateVisibility(searchBar); updateCustomContentVisibility(); setScaleX(mNewScale); setScaleY(mNewScale); setTranslationY(finalWorkspaceTranslationY); } mLauncher.updateVoiceButtonProxyVisible(false); if (stateIsSpringLoaded) { // Right now we're covered by Apps Customize // Show the background gradient immediately, so the gradient will // be showing once AppsCustomize disappears animateBackgroundGradient( getResources().getInteger(R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, false); } else if (stateIsOverview) { animateBackgroundGradient( getResources().getInteger(R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f, true); } else { // Fade the background gradient away animateBackgroundGradient(0f, animated); } return anim; } static class AlphaUpdateListener implements AnimatorUpdateListener, AnimatorListener { View view; public AlphaUpdateListener(View v) { view = v; } @Override public void onAnimationUpdate(ValueAnimator arg0) { updateVisibility(view); } public static void updateVisibility(View view) { // We want to avoid the extra layout pass by setting the views to GONE unless // accessibility is on, in which case not setting them to GONE causes a glitch. int invisibleState = sAccessibilityEnabled ? GONE : INVISIBLE; if (view.getAlpha() < ALPHA_CUTOFF_THRESHOLD && view.getVisibility() != invisibleState) { view.setVisibility(invisibleState); } else if (view.getAlpha() > ALPHA_CUTOFF_THRESHOLD && view.getVisibility() != VISIBLE) { view.setVisibility(VISIBLE); } } @Override public void onAnimationCancel(Animator arg0) { } @Override public void onAnimationEnd(Animator arg0) { updateVisibility(view); } @Override public void onAnimationRepeat(Animator arg0) { } @Override public void onAnimationStart(Animator arg0) { // We want the views to be visible for animation, so fade-in/out is visible view.setVisibility(VISIBLE); } } @Override public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { onTransitionPrepare(); } @Override public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { } @Override public void onLauncherTransitionStep(Launcher l, float t) { mTransitionProgress = t; } @Override public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { onTransitionEnd(); } private void onTransitionPrepare() { mIsSwitchingState = true; // Invalidate here to ensure that the pages are rendered during the state change transition. invalidate(); updateChildrenLayersEnabled(false); hideCustomContentIfNecessary(); } void updateCustomContentVisibility() { int visibility = mState == Workspace.State.NORMAL ? VISIBLE : INVISIBLE; if (hasCustomContent()) { mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(visibility); } } void showCustomContentIfNecessary() { boolean show = mState == Workspace.State.NORMAL; if (show && hasCustomContent()) { mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(VISIBLE); } } void hideCustomContentIfNecessary() { boolean hide = mState != Workspace.State.NORMAL; if (hide && hasCustomContent()) { mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE); } } private void onTransitionEnd() { mIsSwitchingState = false; updateChildrenLayersEnabled(false); // The code in getChangeStateAnimation to determine initialAlpha and finalAlpha will ensure // ensure that only the current page is visible during (and subsequently, after) the // transition animation. If fade adjacent pages is disabled, then re-enable the page // visibility after the transition animation. if (!mWorkspaceFadeInAdjacentScreens) { for (int i = 0; i < getChildCount(); i++) { final CellLayout cl = (CellLayout) getChildAt(i); cl.setShortcutAndWidgetAlpha(1f); } } showCustomContentIfNecessary(); } @Override public View getContent() { return this; } /** * Draw the View v into the given Canvas. * * @param v the view to draw * @param destCanvas the canvas to draw on * @param padding the horizontal and vertical padding to use when drawing */ private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) { final Rect clipRect = mTempRect; v.getDrawingRect(clipRect); boolean textVisible = false; destCanvas.save(); if (v instanceof TextView && pruneToDrawable) { Drawable d = ((TextView) v).getCompoundDrawables()[1]; clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding); destCanvas.translate(padding / 2, padding / 2); d.draw(destCanvas); } else { if (v instanceof FolderIcon) { // For FolderIcons the text can bleed into the icon area, and so we need to // hide the text completely (which can't be achieved by clipping). if (((FolderIcon) v).getTextVisible()) { ((FolderIcon) v).setTextVisible(false); textVisible = true; } } else if (v instanceof BubbleTextView) { final BubbleTextView tv = (BubbleTextView) v; clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + tv.getLayout().getLineTop(0); } else if (v instanceof TextView) { final TextView tv = (TextView) v; clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() + tv.getLayout().getLineTop(0); } destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2); destCanvas.clipRect(clipRect, Op.REPLACE); v.draw(destCanvas); // Restore text visibility of FolderIcon if necessary if (textVisible) { ((FolderIcon) v).setTextVisible(true); } } destCanvas.restore(); } /** * Returns a new bitmap to show when the given View is being dragged around. * Responsibility for the bitmap is transferred to the caller. */ public Bitmap createDragBitmap(View v, Canvas canvas, int padding) { Bitmap b; if (v instanceof TextView) { Drawable d = ((TextView) v).getCompoundDrawables()[1]; b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888); } else { b = Bitmap.createBitmap(v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); } canvas.setBitmap(b); drawDragView(v, canvas, padding, true); canvas.setBitmap(null); return b; } /** * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. * Responsibility for the bitmap is transferred to the caller. */ private Bitmap createDragOutline(View v, Canvas canvas, int padding) { final int outlineColor = getResources().getColor(R.color.outline_color); final Bitmap b = Bitmap.createBitmap(v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888); canvas.setBitmap(b); drawDragView(v, canvas, padding, true); mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor); canvas.setBitmap(null); return b; } /** * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. * Responsibility for the bitmap is transferred to the caller. */ private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h, boolean clipAlpha) { final int outlineColor = getResources().getColor(R.color.outline_color); final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); canvas.setBitmap(b); Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight()); float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(), (h - padding) / (float) orig.getHeight()); int scaledWidth = (int) (scaleFactor * orig.getWidth()); int scaledHeight = (int) (scaleFactor * orig.getHeight()); Rect dst = new Rect(0, 0, scaledWidth, scaledHeight); // center the image dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2); canvas.drawBitmap(orig, src, dst, null); mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor, clipAlpha); canvas.setBitmap(null); return b; } void startDrag(CellLayout.CellInfo cellInfo) { View child = cellInfo.cell; // Make sure the drag was started by a long press as opposed to a long click. if (!child.isInTouchMode()) { return; } mDragInfo = cellInfo; child.setVisibility(INVISIBLE); CellLayout layout = (CellLayout) child.getParent().getParent(); layout.prepareChildForDrag(child); child.clearFocus(); child.setPressed(false); final Canvas canvas = new Canvas(); // The outline is used to visualize where the item will land if dropped mDragOutline = createDragOutline(child, canvas, DRAG_BITMAP_PADDING); beginDragShared(child, this); } public void beginDragShared(View child, DragSource source) { // The drag bitmap follows the touch point around on the screen final Bitmap b = createDragBitmap(child, new Canvas(), DRAG_BITMAP_PADDING); final int bmpWidth = b.getWidth(); final int bmpHeight = b.getHeight(); float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY); int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2); int dragLayerY = Math.round(mTempXY[1] - (bmpHeight - scale * bmpHeight) / 2 - DRAG_BITMAP_PADDING / 2); LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); Point dragVisualizeOffset = null; Rect dragRect = null; if (child instanceof BubbleTextView || child instanceof PagedViewIcon) { int iconSize = grid.iconSizePx; int top = child.getPaddingTop(); int left = (bmpWidth - iconSize) / 2; int right = left + iconSize; int bottom = top + iconSize; dragLayerY += top; // Note: The drag region is used to calculate drag layer offsets, but the // dragVisualizeOffset in addition to the dragRect (the size) to position the outline. dragVisualizeOffset = new Point(-DRAG_BITMAP_PADDING / 2, DRAG_BITMAP_PADDING / 2); dragRect = new Rect(left, top, right, bottom); } else if (child instanceof FolderIcon) { int previewSize = grid.folderIconSizePx; dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize); } // Clear the pressed state if necessary if (child instanceof BubbleTextView) { BubbleTextView icon = (BubbleTextView) child; icon.clearPressedOrFocusedBackground(); } mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(), DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale); if (child.getParent() instanceof ShortcutAndWidgetContainer) { mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent(); } b.recycle(); } void addApplicationShortcut(ShortcutInfo info, CellLayout target, long container, long screenId, int cellX, int cellY, boolean insertAtFirst, int intersectX, int intersectY) { View view = mLauncher.createShortcut(R.layout.application, target, (ShortcutInfo) info); final int[] cellXY = new int[2]; target.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY); addInScreen(view, container, screenId, cellXY[0], cellXY[1], 1, 1, insertAtFirst); LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, cellXY[0], cellXY[1]); } public boolean transitionStateShouldAllowDrop() { return ((!isSwitchingState() || mTransitionProgress > 0.5f) && mState != State.SMALL); } /** * {@inheritDoc} */ public boolean acceptDrop(DragObject d) { // If it's an external drop (e.g. from All Apps), check if it should be accepted CellLayout dropTargetLayout = mDropToLayout; if (d.dragSource != this) { // Don't accept the drop if we're not over a screen at time of drop if (dropTargetLayout == null) { return false; } if (!transitionStateShouldAllowDrop()) return false; mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, mDragViewVisualCenter); // We want the point to be mapped to the dragTarget. if (mLauncher.isHotseatLayout(dropTargetLayout)) { mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); } else { mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); } int spanX = 1; int spanY = 1; if (mDragInfo != null) { final CellLayout.CellInfo dragCellInfo = mDragInfo; spanX = dragCellInfo.spanX; spanY = dragCellInfo.spanY; } else { final ItemInfo dragInfo = (ItemInfo) d.dragInfo; spanX = dragInfo.spanX; spanY = dragInfo.spanY; } int minSpanX = spanX; int minSpanY = spanY; if (d.dragInfo instanceof PendingAddWidgetInfo) { minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX; minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY; } mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout, mTargetCell); float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); if (willCreateUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, mTargetCell, distance, true)) { return true; } if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, dropTargetLayout, mTargetCell, distance)) { return true; } int[] resultSpan = new int[2]; mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP); boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; // Don't accept the drop if there's no room for the item if (!foundCell) { // Don't show the message if we are dropping on the AllApps button and the hotseat // is full boolean isHotseat = mLauncher.isHotseatLayout(dropTargetLayout); if (mTargetCell != null && isHotseat) { Hotseat hotseat = mLauncher.getHotseat(); if (hotseat.isAllAppsButtonRank(hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]))) { return false; } } mLauncher.showOutOfSpaceMessage(isHotseat); return false; } } long screenId = getIdForScreen(dropTargetLayout); if (screenId == EXTRA_EMPTY_SCREEN_ID) { commitExtraEmptyScreen(); } return true; } boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell, float distance, boolean considerTimeout) { if (distance > mMaxDistanceForFolderCreation) return false; View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); if (dropOverView != null) { CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { return false; } } boolean hasntMoved = false; if (mDragInfo != null) { hasntMoved = dropOverView == mDragInfo.cell; } if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) { return false; } boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo); boolean willBecomeShortcut = (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT); return (aboveShortcut && willBecomeShortcut); } boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell, float distance) { if (distance > mMaxDistanceForFolderCreation) return false; View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); if (dropOverView != null) { CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams(); if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.tmpCellY)) { return false; } } if (dropOverView instanceof FolderIcon) { FolderIcon fi = (FolderIcon) dropOverView; if (fi.acceptDrop(dragInfo)) { return true; } } return false; } boolean createUserFolderIfNecessary(View newView, long container, CellLayout target, int[] targetCell, float distance, boolean external, DragView dragView, Runnable postAnimationRunnable) { if (distance > mMaxDistanceForFolderCreation) return false; View v = target.getChildAt(targetCell[0], targetCell[1]); boolean hasntMoved = false; if (mDragInfo != null) { CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell); hasntMoved = (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]) && (cellParent == target); } if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false; mCreateUserFolderOnDrop = false; final long screenId = (targetCell == null) ? mDragInfo.screenId : getIdForScreen(target); boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo); boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo); if (aboveShortcut && willBecomeShortcut) { ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag(); ShortcutInfo destInfo = (ShortcutInfo) v.getTag(); // if the drag started here, we need to remove it from the workspace if (!external) { getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); } Rect folderLocation = new Rect(); float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation); target.removeView(v); FolderIcon fi = mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]); destInfo.cellX = -1; destInfo.cellY = -1; sourceInfo.cellX = -1; sourceInfo.cellY = -1; // If the dragView is null, we can't animate boolean animate = dragView != null; if (animate) { fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale, postAnimationRunnable); } else { fi.addItem(destInfo); fi.addItem(sourceInfo); } return true; } return false; } boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell, float distance, DragObject d, boolean external) { if (distance > mMaxDistanceForFolderCreation) return false; View dropOverView = target.getChildAt(targetCell[0], targetCell[1]); if (!mAddToExistingFolderOnDrop) return false; mAddToExistingFolderOnDrop = false; if (dropOverView instanceof FolderIcon) { FolderIcon fi = (FolderIcon) dropOverView; if (fi.acceptDrop(d.dragInfo)) { fi.onDrop(d); // if the drag started here, we need to remove it from the workspace if (!external) { getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell); } return true; } } return false; } public void onDrop(final DragObject d) { mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, mDragViewVisualCenter); CellLayout dropTargetLayout = mDropToLayout; // We want the point to be mapped to the dragTarget. if (dropTargetLayout != null) { if (mLauncher.isHotseatLayout(dropTargetLayout)) { mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); } else { mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter, null); } } int snapScreen = -1; boolean resizeOnDrop = false; if (d.dragSource != this) { final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1] }; onDropExternal(touchXY, d.dragInfo, dropTargetLayout, false, d); } else if (mDragInfo != null) { final View cell = mDragInfo.cell; Runnable resizeRunnable = null; if (dropTargetLayout != null && !d.cancelled) { // Move internally boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout); boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout); long container = hasMovedIntoHotseat ? LauncherSettings.Favorites.CONTAINER_HOTSEAT : LauncherSettings.Favorites.CONTAINER_DESKTOP; long screenId = (mTargetCell[0] < 0) ? mDragInfo.screenId : getIdForScreen(dropTargetLayout); int spanX = mDragInfo != null ? mDragInfo.spanX : 1; int spanY = mDragInfo != null ? mDragInfo.spanY : 1; // First we find the cell nearest to point at which the item is // dropped, without any consideration to whether there is an item there. mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell); float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); // If the item being dropped is a shortcut and the nearest drop // cell also contains a shortcut, then create a folder with the two shortcuts. if (!mInScrollArea && createUserFolderIfNecessary(cell, container, dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) { stripEmptyScreens(); return; } if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, distance, d, false)) { stripEmptyScreens(); return; } // Aside from the special case where we're dropping a shortcut onto a shortcut, // we need to find the nearest cell location that is vacant ItemInfo item = (ItemInfo) d.dragInfo; int minSpanX = item.spanX; int minSpanY = item.spanY; if (item.minSpanX > 0 && item.minSpanY > 0) { minSpanX = item.minSpanX; minSpanY = item.minSpanY; } int[] resultSpan = new int[2]; mTargetCell = dropTargetLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP); boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0; // if the widget resizes on drop if (foundCell && (cell instanceof AppWidgetHostView) && (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) { resizeOnDrop = true; item.spanX = resultSpan[0]; item.spanY = resultSpan[1]; AppWidgetHostView awhv = (AppWidgetHostView) cell; AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0], resultSpan[1]); } if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) { snapScreen = getPageIndexForScreenId(screenId); snapToPage(snapScreen); } if (foundCell) { final ItemInfo info = (ItemInfo) cell.getTag(); if (hasMovedLayouts) { // Reparent the view getParentCellLayoutForView(cell).removeView(cell); addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, info.spanY); } // update the item's position after drop CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); lp.cellX = lp.tmpCellX = mTargetCell[0]; lp.cellY = lp.tmpCellY = mTargetCell[1]; lp.cellHSpan = item.spanX; lp.cellVSpan = item.spanY; lp.isLockedToGrid = true; cell.setId(LauncherModel.getCellLayoutChildId(container, mDragInfo.screenId, mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY)); if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT && cell instanceof LauncherAppWidgetHostView) { final CellLayout cellLayout = dropTargetLayout; // We post this call so that the widget has a chance to be placed // in its final location final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell; AppWidgetProviderInfo pinfo = hostView.getAppWidgetInfo(); if (pinfo != null && pinfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) { final Runnable addResizeFrame = new Runnable() { public void run() { DragLayer dragLayer = mLauncher.getDragLayer(); dragLayer.addResizeFrame(info, hostView, cellLayout); } }; resizeRunnable = (new Runnable() { public void run() { if (!isPageMoving()) { addResizeFrame.run(); } else { mDelayedResizeRunnable = addResizeFrame; } } }); } } LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, lp.cellX, lp.cellY, item.spanX, item.spanY); } else { // If we can't find a drop location, we return the item to its original position CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); mTargetCell[0] = lp.cellX; mTargetCell[1] = lp.cellY; CellLayout layout = (CellLayout) cell.getParent().getParent(); layout.markCellsAsOccupiedForView(cell); } } final CellLayout parent = (CellLayout) cell.getParent().getParent(); final Runnable finalResizeRunnable = resizeRunnable; // Prepare it to be animated into its new position // This must be called after the view has been re-parented final Runnable onCompleteRunnable = new Runnable() { @Override public void run() { mAnimatingViewIntoPlace = false; updateChildrenLayersEnabled(false); if (finalResizeRunnable != null) { finalResizeRunnable.run(); } stripEmptyScreens(); } }; mAnimatingViewIntoPlace = true; if (d.dragView.hasDrawn()) { final ItemInfo info = (ItemInfo) cell.getTag(); if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) { int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE : ANIMATE_INTO_POSITION_AND_DISAPPEAR; animateWidgetDrop(info, parent, d.dragView, onCompleteRunnable, animationType, cell, false); } else { int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION; mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration, onCompleteRunnable, this); } } else { d.deferDragViewCleanupPostAnimation = false; cell.setVisibility(VISIBLE); } parent.onDropChild(cell); } } public void setFinalScrollForPageChange(int pageIndex) { CellLayout cl = (CellLayout) getChildAt(pageIndex); if (cl != null) { mSavedScrollX = getScrollX(); mSavedTranslationX = cl.getTranslationX(); mSavedRotationY = cl.getRotationY(); final int newX = getScrollForPage(pageIndex); setScrollX(newX); cl.setTranslationX(0f); cl.setRotationY(0f); } } public void resetFinalScrollForPageChange(int pageIndex) { if (pageIndex >= 0) { CellLayout cl = (CellLayout) getChildAt(pageIndex); setScrollX(mSavedScrollX); cl.setTranslationX(mSavedTranslationX); cl.setRotationY(mSavedRotationY); } } public void getViewLocationRelativeToSelf(View v, int[] location) { getLocationInWindow(location); int x = location[0]; int y = location[1]; v.getLocationInWindow(location); int vX = location[0]; int vY = location[1]; location[0] = vX - x; location[1] = vY - y; } public void onDragEnter(DragObject d) { mDragEnforcer.onDragEnter(); mCreateUserFolderOnDrop = false; mAddToExistingFolderOnDrop = false; mDropToLayout = null; CellLayout layout = getCurrentDropLayout(); setCurrentDropLayout(layout); setCurrentDragOverlappingLayout(layout); // Because we don't have space in the Phone UI (the CellLayouts run to the edge) we // don't need to show the outlines if (LauncherAppState.getInstance().isScreenLarge()) { showOutlines(); } } /** Return a rect that has the cellWidth/cellHeight (left, top), and * widthGap/heightGap (right, bottom) */ static Rect getCellLayoutMetrics(Launcher launcher, int orientation) { LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); Resources res = launcher.getResources(); Display display = launcher.getWindowManager().getDefaultDisplay(); Point smallestSize = new Point(); Point largestSize = new Point(); display.getCurrentSizeRange(smallestSize, largestSize); int countX = (int) grid.numColumns; int countY = (int) grid.numRows; int constrainedLongEdge = largestSize.y; int constrainedShortEdge = smallestSize.y; if (orientation == CellLayout.LANDSCAPE) { if (mLandscapeCellLayoutMetrics == null) { Rect padding = grid.getWorkspacePadding(CellLayout.LANDSCAPE); int width = constrainedLongEdge - padding.left - padding.right; int height = constrainedShortEdge - padding.top - padding.bottom; mLandscapeCellLayoutMetrics = new Rect(); mLandscapeCellLayoutMetrics.set(grid.calculateCellWidth(width, countX), grid.calculateCellHeight(height, countY), 0, 0); } return mLandscapeCellLayoutMetrics; } else if (orientation == CellLayout.PORTRAIT) { if (mPortraitCellLayoutMetrics == null) { Rect padding = grid.getWorkspacePadding(CellLayout.PORTRAIT); int width = constrainedShortEdge - padding.left - padding.right; int height = constrainedLongEdge - padding.top - padding.bottom; mPortraitCellLayoutMetrics = new Rect(); mPortraitCellLayoutMetrics.set(grid.calculateCellWidth(width, countX), grid.calculateCellHeight(height, countY), 0, 0); } return mPortraitCellLayoutMetrics; } return null; } public void onDragExit(DragObject d) { mDragEnforcer.onDragExit(); // Here we store the final page that will be dropped to, if the workspace in fact // receives the drop if (mInScrollArea) { if (isPageMoving()) { // If the user drops while the page is scrolling, we should use that page as the // destination instead of the page that is being hovered over. mDropToLayout = (CellLayout) getPageAt(getNextPage()); } else { mDropToLayout = mDragOverlappingLayout; } } else { mDropToLayout = mDragTargetLayout; } if (mDragMode == DRAG_MODE_CREATE_FOLDER) { mCreateUserFolderOnDrop = true; } else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) { mAddToExistingFolderOnDrop = true; } // Reset the scroll area and previous drag target onResetScrollArea(); setCurrentDropLayout(null); setCurrentDragOverlappingLayout(null); mSpringLoadedDragController.cancel(); if (!mIsPageMoving) { hideOutlines(); } } void setCurrentDropLayout(CellLayout layout) { if (mDragTargetLayout != null) { mDragTargetLayout.revertTempState(); mDragTargetLayout.onDragExit(); } mDragTargetLayout = layout; if (mDragTargetLayout != null) { mDragTargetLayout.onDragEnter(); } cleanupReorder(true); cleanupFolderCreation(); setCurrentDropOverCell(-1, -1); } void setCurrentDragOverlappingLayout(CellLayout layout) { if (mDragOverlappingLayout != null) { mDragOverlappingLayout.setIsDragOverlapping(false); } mDragOverlappingLayout = layout; if (mDragOverlappingLayout != null) { mDragOverlappingLayout.setIsDragOverlapping(true); } invalidate(); } void setCurrentDropOverCell(int x, int y) { if (x != mDragOverX || y != mDragOverY) { mDragOverX = x; mDragOverY = y; setDragMode(DRAG_MODE_NONE); } } void setDragMode(int dragMode) { if (dragMode != mDragMode) { if (dragMode == DRAG_MODE_NONE) { cleanupAddToFolder(); // We don't want to cancel the re-order alarm every time the target cell changes // as this feels to slow / unresponsive. cleanupReorder(false); cleanupFolderCreation(); } else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) { cleanupReorder(true); cleanupFolderCreation(); } else if (dragMode == DRAG_MODE_CREATE_FOLDER) { cleanupAddToFolder(); cleanupReorder(true); } else if (dragMode == DRAG_MODE_REORDER) { cleanupAddToFolder(); cleanupFolderCreation(); } mDragMode = dragMode; } } private void cleanupFolderCreation() { if (mDragFolderRingAnimator != null) { mDragFolderRingAnimator.animateToNaturalState(); mDragFolderRingAnimator = null; } mFolderCreationAlarm.setOnAlarmListener(null); mFolderCreationAlarm.cancelAlarm(); } private void cleanupAddToFolder() { if (mDragOverFolderIcon != null) { mDragOverFolderIcon.onDragExit(null); mDragOverFolderIcon = null; } } private void cleanupReorder(boolean cancelAlarm) { // Any pending reorders are canceled if (cancelAlarm) { mReorderAlarm.cancelAlarm(); } mLastReorderX = -1; mLastReorderY = -1; } /* * * Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's * coordinate space. The argument xy is modified with the return result. * * if cachedInverseMatrix is not null, this method will just use that matrix instead of * computing it itself; we use this to avoid redundant matrix inversions in * findMatchingPageForDragOver * */ void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) { xy[0] = xy[0] - v.getLeft(); xy[1] = xy[1] - v.getTop(); } boolean isPointInSelfOverHotseat(int x, int y, Rect r) { if (r == null) { r = new Rect(); } mTempPt[0] = x; mTempPt[1] = y; mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); r = grid.getHotseatRect(); if (r.contains(mTempPt[0], mTempPt[1])) { return true; } return false; } void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) { mTempPt[0] = (int) xy[0]; mTempPt[1] = (int) xy[1]; mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempPt, true); mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempPt); xy[0] = mTempPt[0]; xy[1] = mTempPt[1]; } /* * * Convert the 2D coordinate xy from this CellLayout's coordinate space to * the parent View's coordinate space. The argument xy is modified with the return result. * */ void mapPointFromChildToSelf(View v, float[] xy) { xy[0] += v.getLeft(); xy[1] += v.getTop(); } static private float squaredDistance(float[] point1, float[] point2) { float distanceX = point1[0] - point2[0]; float distanceY = point2[1] - point2[1]; return distanceX * distanceX + distanceY * distanceY; } /* * * This method returns the CellLayout that is currently being dragged to. In order to drag * to a CellLayout, either the touch point must be directly over the CellLayout, or as a second * strategy, we see if the dragView is overlapping any CellLayout and choose the closest one * * Return null if no CellLayout is currently being dragged over * */ private CellLayout findMatchingPageForDragOver(DragView dragView, float originX, float originY, boolean exact) { // We loop through all the screens (ie CellLayouts) and see which ones overlap // with the item being dragged and then choose the one that's closest to the touch point final int screenCount = getChildCount(); CellLayout bestMatchingScreen = null; float smallestDistSoFar = Float.MAX_VALUE; for (int i = 0; i < screenCount; i++) { // The custom content screen is not a valid drag over option if (mScreenOrder.get(i) == CUSTOM_CONTENT_SCREEN_ID) { continue; } CellLayout cl = (CellLayout) getChildAt(i); final float[] touchXy = { originX, originY }; // Transform the touch coordinates to the CellLayout's local coordinates // If the touch point is within the bounds of the cell layout, we can return immediately cl.getMatrix().invert(mTempInverseMatrix); mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix); if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() && touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) { return cl; } if (!exact) { // Get the center of the cell layout in screen coordinates final float[] cellLayoutCenter = mTempCellLayoutCenterCoordinates; cellLayoutCenter[0] = cl.getWidth() / 2; cellLayoutCenter[1] = cl.getHeight() / 2; mapPointFromChildToSelf(cl, cellLayoutCenter); touchXy[0] = originX; touchXy[1] = originY; // Calculate the distance between the center of the CellLayout // and the touch point float dist = squaredDistance(touchXy, cellLayoutCenter); if (dist < smallestDistSoFar) { smallestDistSoFar = dist; bestMatchingScreen = cl; } } } return bestMatchingScreen; } // This is used to compute the visual center of the dragView. This point is then // used to visualize drop locations and determine where to drop an item. The idea is that // the visual center represents the user's interpretation of where the item is, and hence // is the appropriate point to use when determining drop location. private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, DragView dragView, float[] recycle) { float res[]; if (recycle == null) { res = new float[2]; } else { res = recycle; } // First off, the drag view has been shifted in a way that is not represented in the // x and y values or the x/yOffsets. Here we account for that shift. x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX); y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY); // These represent the visual top and left of drag view if a dragRect was provided. // If a dragRect was not provided, then they correspond to the actual view left and // top, as the dragRect is in that case taken to be the entire dragView. // R.dimen.dragViewOffsetY. int left = x - xOffset; int top = y - yOffset; // In order to find the visual center, we shift by half the dragRect res[0] = left + dragView.getDragRegion().width() / 2; res[1] = top + dragView.getDragRegion().height() / 2; return res; } private boolean isDragWidget(DragObject d) { return (d.dragInfo instanceof LauncherAppWidgetInfo || d.dragInfo instanceof PendingAddWidgetInfo); } private boolean isExternalDragWidget(DragObject d) { return d.dragSource != this && isDragWidget(d); } public void onDragOver(DragObject d) { // Skip drag over events while we are dragging over side pages if (mInScrollArea || mIsSwitchingState || mState == State.SMALL) return; Rect r = new Rect(); CellLayout layout = null; ItemInfo item = (ItemInfo) d.dragInfo; // Ensure that we have proper spans for the item that we are dropping if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found"); mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, mDragViewVisualCenter); final View child = (mDragInfo == null) ? null : mDragInfo.cell; // Identify whether we have dragged over a side page if (isSmall()) { if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) { if (isPointInSelfOverHotseat(d.x, d.y, r)) { layout = mLauncher.getHotseat().getLayout(); } } if (layout == null) { layout = findMatchingPageForDragOver(d.dragView, d.x, d.y, false); } if (layout != mDragTargetLayout) { setCurrentDropLayout(layout); setCurrentDragOverlappingLayout(layout); boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED); if (isInSpringLoadedMode) { if (mLauncher.isHotseatLayout(layout)) { mSpringLoadedDragController.cancel(); } else { mSpringLoadedDragController.setAlarm(mDragTargetLayout); } } } } else { // Test to see if we are over the hotseat otherwise just use the current page if (mLauncher.getHotseat() != null && !isDragWidget(d)) { if (isPointInSelfOverHotseat(d.x, d.y, r)) { layout = mLauncher.getHotseat().getLayout(); } } if (layout == null) { layout = getCurrentDropLayout(); } if (layout != mDragTargetLayout) { setCurrentDropLayout(layout); setCurrentDragOverlappingLayout(layout); } } // Handle the drag over if (mDragTargetLayout != null) { // We want the point to be mapped to the dragTarget. if (mLauncher.isHotseatLayout(mDragTargetLayout)) { mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter); } else { mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null); } ItemInfo info = (ItemInfo) d.dragInfo; int minSpanX = item.spanX; int minSpanY = item.spanY; if (item.minSpanX > 0 && item.minSpanY > 0) { minSpanX = item.minSpanX; minSpanY = item.minSpanY; } mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, mTargetCell); int reorderX = mTargetCell[0]; int reorderY = mTargetCell[1]; setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]); float targetCellDistance = mDragTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]); manageFolderFeedback(info, mDragTargetLayout, mTargetCell, targetCellDistance, dragOverView); boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied( (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX, item.spanY, child, mTargetCell); if (!nearestDropOccupied) { mDragTargetLayout.visualizeDropLocation(child, mDragOutline, (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, d.dragView.getDragVisualizeOffset(), d.dragView.getDragRegion()); } else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER) && !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX || mLastReorderY != reorderY)) { // Otherwise, if we aren't adding to or creating a folder and there's no pending // reorder, then we schedule a reorder ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter, minSpanX, minSpanY, item.spanX, item.spanY, d.dragView, child); mReorderAlarm.setOnAlarmListener(listener); mReorderAlarm.setAlarm(REORDER_TIMEOUT); } if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER || !nearestDropOccupied) { if (mDragTargetLayout != null) { mDragTargetLayout.revertTempState(); } } } } private void manageFolderFeedback(ItemInfo info, CellLayout targetLayout, int[] targetCell, float distance, View dragOverView) { boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance, false); if (mDragMode == DRAG_MODE_NONE && userFolderPending && !mFolderCreationAlarm.alarmPending()) { mFolderCreationAlarm.setOnAlarmListener( new FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1])); mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT); return; } boolean willAddToFolder = willAddToExistingUserFolder(info, targetLayout, targetCell, distance); if (willAddToFolder && mDragMode == DRAG_MODE_NONE) { mDragOverFolderIcon = ((FolderIcon) dragOverView); mDragOverFolderIcon.onDragEnter(info); if (targetLayout != null) { targetLayout.clearDragOutlines(); } setDragMode(DRAG_MODE_ADD_TO_FOLDER); return; } if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) { setDragMode(DRAG_MODE_NONE); } if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) { setDragMode(DRAG_MODE_NONE); } return; } class FolderCreationAlarmListener implements OnAlarmListener { CellLayout layout; int cellX; int cellY; public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) { this.layout = layout; this.cellX = cellX; this.cellY = cellY; } public void onAlarm(Alarm alarm) { if (mDragFolderRingAnimator != null) { // This shouldn't happen ever, but just in case, make sure we clean up the mess. mDragFolderRingAnimator.animateToNaturalState(); } mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null); mDragFolderRingAnimator.setCell(cellX, cellY); mDragFolderRingAnimator.setCellLayout(layout); mDragFolderRingAnimator.animateToAcceptState(); layout.showFolderAccept(mDragFolderRingAnimator); layout.clearDragOutlines(); setDragMode(DRAG_MODE_CREATE_FOLDER); } } class ReorderAlarmListener implements OnAlarmListener { float[] dragViewCenter; int minSpanX, minSpanY, spanX, spanY; DragView dragView; View child; public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX, int spanY, DragView dragView, View child) { this.dragViewCenter = dragViewCenter; this.minSpanX = minSpanX; this.minSpanY = minSpanY; this.spanX = spanX; this.spanY = spanY; this.child = child; this.dragView = dragView; } public void onAlarm(Alarm alarm) { int[] resultSpan = new int[2]; mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout, mTargetCell); mLastReorderX = mTargetCell[0]; mLastReorderY = mTargetCell[1]; mTargetCell = mDragTargetLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER); if (mTargetCell[0] < 0 || mTargetCell[1] < 0) { mDragTargetLayout.revertTempState(); } else { setDragMode(DRAG_MODE_REORDER); } boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY; mDragTargetLayout.visualizeDropLocation(child, mDragOutline, (int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, dragView.getDragVisualizeOffset(), dragView.getDragRegion()); } } @Override public void getHitRectRelativeToDragLayer(Rect outRect) { // We want the workspace to have the whole area of the display (it will find the correct // cell layout to drop to in the existing drag/drop logic. mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect); } /** * Add the item specified by dragInfo to the given layout. * @return true if successful */ public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) { if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) { onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false); return true; } mLauncher.showOutOfSpaceMessage(mLauncher.isHotseatLayout(layout)); return false; } private void onDropExternal(int[] touchXY, Object dragInfo, CellLayout cellLayout, boolean insertAtFirst) { onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null); } /** * Drop an item that didn't originate on one of the workspace screens. * It may have come from Launcher (e.g. from all apps or customize), or it may have * come from another app altogether. * * NOTE: This can also be called when we are outside of a drag event, when we want * to add an item to one of the workspace screens. */ private void onDropExternal(final int[] touchXY, final Object dragInfo, final CellLayout cellLayout, boolean insertAtFirst, DragObject d) { final Runnable exitSpringLoadedRunnable = new Runnable() { @Override public void run() { mLauncher.exitSpringLoadedDragModeDelayed(true, false, null); } }; ItemInfo info = (ItemInfo) dragInfo; int spanX = info.spanX; int spanY = info.spanY; if (mDragInfo != null) { spanX = mDragInfo.spanX; spanY = mDragInfo.spanY; } final long container = mLauncher.isHotseatLayout(cellLayout) ? LauncherSettings.Favorites.CONTAINER_HOTSEAT : LauncherSettings.Favorites.CONTAINER_DESKTOP; final long screenId = getIdForScreen(cellLayout); if (!mLauncher.isHotseatLayout(cellLayout) && screenId != getScreenIdForPageIndex(mCurrentPage) && mState != State.SPRING_LOADED) { snapToScreenId(screenId, null); } if (info instanceof PendingAddItemInfo) { final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo; boolean findNearestVacantCell = true; if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) { mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, cellLayout, mTargetCell); float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); if (willCreateUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, distance, true) || willAddToExistingUserFolder((ItemInfo) d.dragInfo, cellLayout, mTargetCell, distance)) { findNearestVacantCell = false; } } final ItemInfo item = (ItemInfo) d.dragInfo; boolean updateWidgetSize = false; if (findNearestVacantCell) { int minSpanX = item.spanX; int minSpanY = item.spanY; if (item.minSpanX > 0 && item.minSpanY > 0) { minSpanX = item.minSpanX; minSpanY = item.minSpanY; } int[] resultSpan = new int[2]; mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY, null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL); if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) { updateWidgetSize = true; } item.spanX = resultSpan[0]; item.spanY = resultSpan[1]; } Runnable onAnimationCompleteRunnable = new Runnable() { @Override public void run() { // When dragging and dropping from customization tray, we deal with creating // widgets/shortcuts/folders in a slightly different way switch (pendingInfo.itemType) { case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET: int span[] = new int[2]; span[0] = item.spanX; span[1] = item.spanY; mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo, container, screenId, mTargetCell, span, null); break; case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: mLauncher.processShortcutFromDrop(pendingInfo.componentName, container, screenId, mTargetCell, null); break; default: throw new IllegalStateException("Unknown item type: " + pendingInfo.itemType); } } }; View finalView = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET ? ((PendingAddWidgetInfo) pendingInfo).boundWidget : null; if (finalView instanceof AppWidgetHostView && updateWidgetSize) { AppWidgetHostView awhv = (AppWidgetHostView) finalView; AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, item.spanX, item.spanY); } int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR; if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && ((PendingAddWidgetInfo) pendingInfo).info.configure != null) { animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN; } animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable, animationStyle, finalView, true); } else { // This is for other drag/drop cases, like dragging from All Apps View view = null; switch (info.itemType) { case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: if (info.container == NO_ID && info instanceof AppInfo) { // Came from all apps -- make a copy info = new ShortcutInfo((AppInfo) info); } view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info); break; case LauncherSettings.Favorites.ITEM_TYPE_FOLDER: view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout, (FolderInfo) info, mIconCache); break; default: throw new IllegalStateException("Unknown item type: " + info.itemType); } // First we find the cell nearest to point at which the item is // dropped, without any consideration to whether there is an item there. if (touchXY != null) { mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY, cellLayout, mTargetCell); float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell); d.postAnimationRunnable = exitSpringLoadedRunnable; if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance, true, d.dragView, d.postAnimationRunnable)) { return; } if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d, true)) { return; } } if (touchXY != null) { // when dragging and dropping, just find the closest free spot mTargetCell = cellLayout.createArea((int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], 1, 1, 1, 1, null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL); } else { cellLayout.findCellForSpan(mTargetCell, 1, 1); } addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX, info.spanY, insertAtFirst); cellLayout.onDropChild(view); CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); cellLayout.getShortcutsAndWidgets().measureChild(view); LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId, lp.cellX, lp.cellY); if (d.dragView != null) { // We wrap the animation call in the temporary set and reset of the current // cellLayout to its final transform -- this means we animate the drag view to // the correct final location. setFinalTransitionTransform(cellLayout); mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view, exitSpringLoadedRunnable); resetTransitionTransform(cellLayout); } } } public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) { int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(widgetInfo.spanX, widgetInfo.spanY, widgetInfo, false); int visibility = layout.getVisibility(); layout.setVisibility(VISIBLE); int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY); int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY); Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1], Bitmap.Config.ARGB_8888); Canvas c = new Canvas(b); layout.measure(width, height); layout.layout(0, 0, unScaledSize[0], unScaledSize[1]); layout.draw(c); c.setBitmap(null); layout.setVisibility(visibility); return b; } private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY, DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, boolean external, boolean scale) { // Now we animate the dragView, (ie. the widget or shortcut preview) into its final // location and size on the home screen. int spanX = info.spanX; int spanY = info.spanY; Rect r = estimateItemPosition(layout, info, targetCell[0], targetCell[1], spanX, spanY); loc[0] = r.left; loc[1] = r.top; setFinalTransitionTransform(layout); float cellLayoutScale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true); resetTransitionTransform(layout); float dragViewScaleX; float dragViewScaleY; if (scale) { dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth(); dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight(); } else { dragViewScaleX = 1f; dragViewScaleY = 1f; } // The animation will scale the dragView about its center, so we need to center about // the final location. loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2; loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2; scaleXY[0] = dragViewScaleX * cellLayoutScale; scaleXY[1] = dragViewScaleY * cellLayoutScale; } public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, DragView dragView, final Runnable onCompleteRunnable, int animationType, final View finalView, boolean external) { Rect from = new Rect(); mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from); int[] finalPos = new int[2]; float scaleXY[] = new float[2]; boolean scalePreview = !(info instanceof PendingAddShortcutInfo); getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell, external, scalePreview); Resources res = mLauncher.getResources(); int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200; // In the case where we've prebound the widget, we remove it from the DragLayer if (finalView instanceof AppWidgetHostView && external) { Log.d(TAG, "6557954 Animate widget drop, final view is appWidgetHostView"); mLauncher.getDragLayer().removeView(finalView); } if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) { Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView); dragView.setCrossFadeBitmap(crossFadeBitmap); dragView.crossFade((int) (duration * 0.8f)); } else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET && external) { scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]); } DragLayer dragLayer = mLauncher.getDragLayer(); if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) { mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f, DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration); } else { int endStyle; if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) { endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE; } else { endStyle = DragLayer.ANIMATION_END_DISAPPEAR; ; } Runnable onComplete = new Runnable() { @Override public void run() { if (finalView != null) { finalView.setVisibility(VISIBLE); } if (onCompleteRunnable != null) { onCompleteRunnable.run(); } } }; dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0], finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle, duration, this); } } public void setFinalTransitionTransform(CellLayout layout) { if (isSwitchingState()) { mCurrentScale = getScaleX(); setScaleX(mNewScale); setScaleY(mNewScale); } } public void resetTransitionTransform(CellLayout layout) { if (isSwitchingState()) { setScaleX(mCurrentScale); setScaleY(mCurrentScale); } } /** * Return the current {@link CellLayout}, correctly picking the destination * screen while a scroll is in progress. */ public CellLayout getCurrentDropLayout() { return (CellLayout) getChildAt(getNextPage()); } /** * Return the current CellInfo describing our current drag; this method exists * so that Launcher can sync this object with the correct info when the activity is created/ * destroyed * */ public CellLayout.CellInfo getDragInfo() { return mDragInfo; } public int getRestorePage() { return getNextPage() - numCustomPages(); } /** * Calculate the nearest cell where the given object would be dropped. * * pixelX and pixelY should be in the coordinate system of layout */ private int[] findNearestArea(int pixelX, int pixelY, int spanX, int spanY, CellLayout layout, int[] recycle) { return layout.findNearestArea(pixelX, pixelY, spanX, spanY, recycle); } void setup(DragController dragController) { mSpringLoadedDragController = new SpringLoadedDragController(mLauncher); mDragController = dragController; // hardware layers on children are enabled on startup, but should be disabled until // needed updateChildrenLayersEnabled(false); setWallpaperDimension(); } /** * Called at the end of a drag which originated on the workspace. */ public void onDropCompleted(final View target, final DragObject d, final boolean isFlingToDelete, final boolean success) { if (mDeferDropAfterUninstall) { mDeferredAction = new Runnable() { public void run() { onDropCompleted(target, d, isFlingToDelete, success); mDeferredAction = null; } }; return; } boolean beingCalledAfterUninstall = mDeferredAction != null; if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) { if (target != this && mDragInfo != null) { CellLayout parentCell = getParentCellLayoutForView(mDragInfo.cell); if (parentCell != null) { parentCell.removeView(mDragInfo.cell); } if (mDragInfo.cell instanceof DropTarget) { mDragController.removeDropTarget((DropTarget) mDragInfo.cell); } // If we move the item to anything not on the Workspace, check if any empty // screens need to be removed. If we dropped back on the workspace, this will // be done post drop animation. stripEmptyScreens(); } } else if (mDragInfo != null) { CellLayout cellLayout; if (mLauncher.isHotseatLayout(target)) { cellLayout = mLauncher.getHotseat().getLayout(); } else { cellLayout = getScreenWithId(mDragInfo.screenId); } cellLayout.onDropChild(mDragInfo.cell); } if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful)) && mDragInfo.cell != null) { mDragInfo.cell.setVisibility(VISIBLE); } mDragOutline = null; mDragInfo = null; } public void deferCompleteDropAfterUninstallActivity() { mDeferDropAfterUninstall = true; } /// maybe move this into a smaller part public void onUninstallActivityReturned(boolean success) { mDeferDropAfterUninstall = false; mUninstallSuccessful = success; if (mDeferredAction != null) { mDeferredAction.run(); } } void updateItemLocationsInDatabase(CellLayout cl) { int count = cl.getShortcutsAndWidgets().getChildCount(); long screenId = getIdForScreen(cl); int container = Favorites.CONTAINER_DESKTOP; if (mLauncher.isHotseatLayout(cl)) { screenId = -1; container = Favorites.CONTAINER_HOTSEAT; } for (int i = 0; i < count; i++) { View v = cl.getShortcutsAndWidgets().getChildAt(i); ItemInfo info = (ItemInfo) v.getTag(); // Null check required as the AllApps button doesn't have an item info if (info != null && info.requiresDbUpdate) { info.requiresDbUpdate = false; LauncherModel.modifyItemInDatabase(mLauncher, info, container, screenId, info.cellX, info.cellY, info.spanX, info.spanY); } } } ArrayList<ComponentName> getUniqueComponents(boolean stripDuplicates, ArrayList<ComponentName> duplicates) { ArrayList<ComponentName> uniqueIntents = new ArrayList<ComponentName>(); getUniqueIntents((CellLayout) mLauncher.getHotseat().getLayout(), uniqueIntents, duplicates, false); int count = getChildCount(); for (int i = 0; i < count; i++) { CellLayout cl = (CellLayout) getChildAt(i); getUniqueIntents(cl, uniqueIntents, duplicates, false); } return uniqueIntents; } void getUniqueIntents(CellLayout cl, ArrayList<ComponentName> uniqueIntents, ArrayList<ComponentName> duplicates, boolean stripDuplicates) { int count = cl.getShortcutsAndWidgets().getChildCount(); ArrayList<View> children = new ArrayList<View>(); for (int i = 0; i < count; i++) { View v = cl.getShortcutsAndWidgets().getChildAt(i); children.add(v); } for (int i = 0; i < count; i++) { View v = children.get(i); ItemInfo info = (ItemInfo) v.getTag(); // Null check required as the AllApps button doesn't have an item info if (info instanceof ShortcutInfo) { ShortcutInfo si = (ShortcutInfo) info; ComponentName cn = si.intent.getComponent(); Uri dataUri = si.intent.getData(); // If dataUri is not null / empty or if this component isn't one that would // have previously showed up in the AllApps list, then this is a widget-type // shortcut, so ignore it. if (dataUri != null && !dataUri.equals(Uri.EMPTY)) { continue; } if (!uniqueIntents.contains(cn)) { uniqueIntents.add(cn); } else { if (stripDuplicates) { cl.removeViewInLayout(v); LauncherModel.deleteItemFromDatabase(mLauncher, si); } if (duplicates != null) { duplicates.add(cn); } } } if (v instanceof FolderIcon) { FolderIcon fi = (FolderIcon) v; ArrayList<View> items = fi.getFolder().getItemsInReadingOrder(); for (int j = 0; j < items.size(); j++) { if (items.get(j).getTag() instanceof ShortcutInfo) { ShortcutInfo si = (ShortcutInfo) items.get(j).getTag(); ComponentName cn = si.intent.getComponent(); Uri dataUri = si.intent.getData(); // If dataUri is not null / empty or if this component isn't one that would // have previously showed up in the AllApps list, then this is a widget-type // shortcut, so ignore it. if (dataUri != null && !dataUri.equals(Uri.EMPTY)) { continue; } if (!uniqueIntents.contains(cn)) { uniqueIntents.add(cn); } else { if (stripDuplicates) { fi.getFolderInfo().remove(si); LauncherModel.deleteItemFromDatabase(mLauncher, si); } if (duplicates != null) { duplicates.add(cn); } } } } } } } void saveWorkspaceToDb() { saveWorkspaceScreenToDb((CellLayout) mLauncher.getHotseat().getLayout()); int count = getChildCount(); for (int i = 0; i < count; i++) { CellLayout cl = (CellLayout) getChildAt(i); saveWorkspaceScreenToDb(cl); } } void saveWorkspaceScreenToDb(CellLayout cl) { int count = cl.getShortcutsAndWidgets().getChildCount(); long screenId = getIdForScreen(cl); int container = Favorites.CONTAINER_DESKTOP; Hotseat hotseat = mLauncher.getHotseat(); if (mLauncher.isHotseatLayout(cl)) { screenId = -1; container = Favorites.CONTAINER_HOTSEAT; } for (int i = 0; i < count; i++) { View v = cl.getShortcutsAndWidgets().getChildAt(i); ItemInfo info = (ItemInfo) v.getTag(); // Null check required as the AllApps button doesn't have an item info if (info != null) { int cellX = info.cellX; int cellY = info.cellY; if (container == Favorites.CONTAINER_HOTSEAT) { cellX = hotseat.getCellXFromOrder((int) info.screenId); cellY = hotseat.getCellYFromOrder((int) info.screenId); } LauncherModel.addItemToDatabase(mLauncher, info, container, screenId, cellX, cellY, false); } if (v instanceof FolderIcon) { FolderIcon fi = (FolderIcon) v; fi.getFolder().addItemLocationsInDatabase(); } } } @Override public boolean supportsFlingToDelete() { return true; } @Override public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { // Do nothing } @Override public void onFlingToDeleteCompleted() { // Do nothing } public boolean isDropEnabled() { return true; } @Override protected void onRestoreInstanceState(Parcelable state) { super.onRestoreInstanceState(state); Launcher.setScreen(mCurrentPage); } @Override protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) { // We don't dispatch restoreInstanceState to our children using this code path. // Some pages will be restored immediately as their items are bound immediately, and // others we will need to wait until after their items are bound. mSavedStates = container; } public void restoreInstanceStateForChild(int child) { if (mSavedStates != null) { mRestoredPages.add(child); CellLayout cl = (CellLayout) getChildAt(child); cl.restoreInstanceState(mSavedStates); } } public void restoreInstanceStateForRemainingPages() { int count = getChildCount(); for (int i = 0; i < count; i++) { if (!mRestoredPages.contains(i)) { restoreInstanceStateForChild(i); } } mRestoredPages.clear(); mSavedStates = null; } @Override public void scrollLeft() { if (!isSmall() && !mIsSwitchingState) { super.scrollLeft(); } Folder openFolder = getOpenFolder(); if (openFolder != null) { openFolder.completeDragExit(); } } @Override public void scrollRight() { if (!isSmall() && !mIsSwitchingState) { super.scrollRight(); } Folder openFolder = getOpenFolder(); if (openFolder != null) { openFolder.completeDragExit(); } } @Override public boolean onEnterScrollArea(int x, int y, int direction) { // Ignore the scroll area if we are dragging over the hot seat boolean isPortrait = !LauncherAppState.isScreenLandscape(getContext()); if (mLauncher.getHotseat() != null && isPortrait) { Rect r = new Rect(); mLauncher.getHotseat().getHitRect(r); if (r.contains(x, y)) { return false; } } boolean result = false; if (!isSmall() && !mIsSwitchingState && getOpenFolder() == null) { mInScrollArea = true; final int page = getNextPage() + (direction == DragController.SCROLL_LEFT ? -1 : 1); // We always want to exit the current layout to ensure parity of enter / exit setCurrentDropLayout(null); if (0 <= page && page < getChildCount()) { // Ensure that we are not dragging over to the custom content screen if (getScreenIdForPageIndex(page) == CUSTOM_CONTENT_SCREEN_ID) { return false; } CellLayout layout = (CellLayout) getChildAt(page); setCurrentDragOverlappingLayout(layout); // Workspace is responsible for drawing the edge glow on adjacent pages, // so we need to redraw the workspace when this may have changed. invalidate(); result = true; } } return result; } @Override public boolean onExitScrollArea() { boolean result = false; if (mInScrollArea) { invalidate(); CellLayout layout = getCurrentDropLayout(); setCurrentDropLayout(layout); setCurrentDragOverlappingLayout(layout); result = true; mInScrollArea = false; } return result; } private void onResetScrollArea() { setCurrentDragOverlappingLayout(null); mInScrollArea = false; } /** * Returns a specific CellLayout */ CellLayout getParentCellLayoutForView(View v) { ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts(); for (CellLayout layout : layouts) { if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) { return layout; } } return null; } /** * Returns a list of all the CellLayouts in the workspace. */ ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() { ArrayList<CellLayout> layouts = new ArrayList<CellLayout>(); int screenCount = getChildCount(); for (int screen = 0; screen < screenCount; screen++) { layouts.add(((CellLayout) getChildAt(screen))); } if (mLauncher.getHotseat() != null) { layouts.add(mLauncher.getHotseat().getLayout()); } return layouts; } /** * We should only use this to search for specific children. Do not use this method to modify * ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from * the hotseat and workspace pages */ ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() { ArrayList<ShortcutAndWidgetContainer> childrenLayouts = new ArrayList<ShortcutAndWidgetContainer>(); int screenCount = getChildCount(); for (int screen = 0; screen < screenCount; screen++) { childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets()); } if (mLauncher.getHotseat() != null) { childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets()); } return childrenLayouts; } public Folder getFolderForTag(Object tag) { ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); for (ShortcutAndWidgetContainer layout : childrenLayouts) { int count = layout.getChildCount(); for (int i = 0; i < count; i++) { View child = layout.getChildAt(i); if (child instanceof Folder) { Folder f = (Folder) child; if (f.getInfo() == tag && f.getInfo().opened) { return f; } } } } return null; } public View getViewForTag(Object tag) { ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); for (ShortcutAndWidgetContainer layout : childrenLayouts) { int count = layout.getChildCount(); for (int i = 0; i < count; i++) { View child = layout.getChildAt(i); if (child.getTag() == tag) { return child; } } } return null; } void clearDropTargets() { ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); for (ShortcutAndWidgetContainer layout : childrenLayouts) { int childCount = layout.getChildCount(); for (int j = 0; j < childCount; j++) { View v = layout.getChildAt(j); if (v instanceof DropTarget) { mDragController.removeDropTarget((DropTarget) v); } } } } // Removes ALL items that match a given package name, this is usually called when a package // has been removed and we want to remove all components (widgets, shortcuts, apps) that // belong to that package. void removeItemsByPackageName(final ArrayList<String> packages) { final HashSet<String> packageNames = new HashSet<String>(); packageNames.addAll(packages); // Filter out all the ItemInfos that this is going to affect final HashSet<ItemInfo> infos = new HashSet<ItemInfo>(); final HashSet<ComponentName> cns = new HashSet<ComponentName>(); ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); for (CellLayout layoutParent : cellLayouts) { ViewGroup layout = layoutParent.getShortcutsAndWidgets(); int childCount = layout.getChildCount(); for (int i = 0; i < childCount; ++i) { View view = layout.getChildAt(i); infos.add((ItemInfo) view.getTag()); } } LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { @Override public boolean filterItem(ItemInfo parent, ItemInfo info, ComponentName cn) { if (packageNames.contains(cn.getPackageName())) { cns.add(cn); return true; } return false; } }; LauncherModel.filterItemInfos(infos, filter); // Remove the affected components removeItemsByComponentName(cns); } // Removes items that match the application info specified, when applications are removed // as a part of an update, this is called to ensure that other widgets and application // shortcuts are not removed. void removeItemsByApplicationInfo(final ArrayList<AppInfo> appInfos) { // Just create a hash table of all the specific components that this will affect HashSet<ComponentName> cns = new HashSet<ComponentName>(); for (AppInfo info : appInfos) { cns.add(info.componentName); } // Remove all the things removeItemsByComponentName(cns); } void removeItemsByComponentName(final HashSet<ComponentName> componentNames) { ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts(); for (final CellLayout layoutParent : cellLayouts) { final ViewGroup layout = layoutParent.getShortcutsAndWidgets(); final HashMap<ItemInfo, View> children = new HashMap<ItemInfo, View>(); for (int j = 0; j < layout.getChildCount(); j++) { final View view = layout.getChildAt(j); children.put((ItemInfo) view.getTag(), view); } final ArrayList<View> childrenToRemove = new ArrayList<View>(); final HashMap<FolderInfo, ArrayList<ShortcutInfo>> folderAppsToRemove = new HashMap<FolderInfo, ArrayList<ShortcutInfo>>(); LauncherModel.ItemInfoFilter filter = new LauncherModel.ItemInfoFilter() { @Override public boolean filterItem(ItemInfo parent, ItemInfo info, ComponentName cn) { if (parent instanceof FolderInfo) { if (componentNames.contains(cn)) { FolderInfo folder = (FolderInfo) parent; ArrayList<ShortcutInfo> appsToRemove; if (folderAppsToRemove.containsKey(folder)) { appsToRemove = folderAppsToRemove.get(folder); } else { appsToRemove = new ArrayList<ShortcutInfo>(); folderAppsToRemove.put(folder, appsToRemove); } appsToRemove.add((ShortcutInfo) info); return true; } } else { if (componentNames.contains(cn)) { childrenToRemove.add(children.get(info)); return true; } } return false; } }; LauncherModel.filterItemInfos(children.keySet(), filter); // Remove all the apps from their folders for (FolderInfo folder : folderAppsToRemove.keySet()) { ArrayList<ShortcutInfo> appsToRemove = folderAppsToRemove.get(folder); for (ShortcutInfo info : appsToRemove) { folder.remove(info); } } // Remove all the other children for (View child : childrenToRemove) { // Note: We can not remove the view directly from CellLayoutChildren as this // does not re-mark the spaces as unoccupied. layoutParent.removeViewInLayout(child); if (child instanceof DropTarget) { mDragController.removeDropTarget((DropTarget) child); } } if (childrenToRemove.size() > 0) { layout.requestLayout(); layout.invalidate(); } } // Strip all the empty screens stripEmptyScreens(); } void updateShortcuts(ArrayList<AppInfo> apps) { ArrayList<ShortcutAndWidgetContainer> childrenLayouts = getAllShortcutAndWidgetContainers(); for (ShortcutAndWidgetContainer layout : childrenLayouts) { int childCount = layout.getChildCount(); for (int j = 0; j < childCount; j++) { final View view = layout.getChildAt(j); Object tag = view.getTag(); if (LauncherModel.isShortcutInfoUpdateable((ItemInfo) tag)) { ShortcutInfo info = (ShortcutInfo) tag; final Intent intent = info.intent; final ComponentName name = intent.getComponent(); final int appCount = apps.size(); for (int k = 0; k < appCount; k++) { AppInfo app = apps.get(k); if (app.componentName.equals(name)) { BubbleTextView shortcut = (BubbleTextView) view; info.updateIcon(mIconCache); info.title = app.title.toString(); shortcut.applyFromShortcutInfo(info, mIconCache); } } } } } } private void moveToScreen(int page, boolean animate) { if (!isSmall()) { if (animate) { snapToPage(page); } else { setCurrentPage(page); } } View child = getChildAt(page); if (child != null) { child.requestFocus(); } } void moveToDefaultScreen(boolean animate) { moveToScreen(mDefaultPage, animate); } void moveToCustomContentScreen(boolean animate) { if (hasCustomContent()) { int ccIndex = getPageIndexForScreenId(CUSTOM_CONTENT_SCREEN_ID); if (animate) { snapToPage(ccIndex); } else { setCurrentPage(ccIndex); } View child = getChildAt(ccIndex); if (child != null) { child.requestFocus(); } } } @Override protected PageIndicator.PageMarkerResources getPageIndicatorMarker(int pageIndex) { long screenId = getScreenIdForPageIndex(pageIndex); if (screenId == EXTRA_EMPTY_SCREEN_ID) { int count = mScreenOrder.size() - numCustomPages(); if (count > 1) { return new PageIndicator.PageMarkerResources(R.drawable.ic_pageindicator_current, R.drawable.ic_pageindicator_add); } } return super.getPageIndicatorMarker(pageIndex); } @Override public void syncPages() { } @Override public void syncPageItems(int page, boolean immediate) { } protected String getPageIndicatorDescription() { String settings = getResources().getString(R.string.settings_button_text); return getCurrentPageDescription() + ", " + settings; } protected String getCurrentPageDescription() { int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage; int delta = numCustomPages(); if (hasCustomContent() && getNextPage() == 0) { return mCustomContentDescription; } return String.format(getContext().getString(R.string.workspace_scroll_format), page + 1 - delta, getChildCount() - delta); } public void getLocationInDragLayer(int[] loc) { mLauncher.getDragLayer().getLocationInDragLayer(this, loc); } }