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android / platform / packages / apps / Launcher3 / fedca43d396d6fd7c46fbb2f37dfa7cfe3b31834 / . / src / com / android / launcher3 / Workspace.java
blob: 5ad8465173e4d57579470874f281d5df28715a20 [file] [log] [blame]
/*
* 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.android.launcher3;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.LayoutTransition;
import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.WallpaperManager;
import android.appwidget.AppWidgetHostView;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ComponentName;
import android.content.Context;
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.Paint;
import android.graphics.Point;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.Region.Op;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Parcelable;
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.accessibility.AccessibilityManager;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.widget.TextView;
import com.android.launcher3.FolderIcon.FolderRingAnimator;
import com.android.launcher3.Launcher.CustomContentCallbacks;
import com.android.launcher3.Launcher.LauncherOverlay;
import com.android.launcher3.LauncherSettings.Favorites;
import com.android.launcher3.UninstallDropTarget.UninstallSource;
import com.android.launcher3.accessibility.LauncherAccessibilityDelegate;
import com.android.launcher3.accessibility.LauncherAccessibilityDelegate.AccessibilityDragSource;
import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate;
import com.android.launcher3.compat.UserHandleCompat;
import com.android.launcher3.config.ProviderConfig;
import com.android.launcher3.dragndrop.DragController;
import com.android.launcher3.dragndrop.DragLayer;
import com.android.launcher3.dragndrop.DragScroller;
import com.android.launcher3.dragndrop.DragView;
import com.android.launcher3.dragndrop.SpringLoadedDragController;
import com.android.launcher3.util.LongArrayMap;
import com.android.launcher3.util.Thunk;
import com.android.launcher3.util.WallpaperUtils;
import com.android.launcher3.widget.PendingAddShortcutInfo;
import com.android.launcher3.widget.PendingAddWidgetInfo;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.concurrent.atomic.AtomicInteger;
/**
* 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 PagedView
implements DropTarget, DragSource, DragScroller, View.OnTouchListener,
DragController.DragListener, LauncherTransitionable, ViewGroup.OnHierarchyChangeListener,
Insettable, UninstallSource, AccessibilityDragSource, Stats.LaunchSourceProvider {
private static final String TAG = "Launcher.Workspace";
private static boolean ENFORCE_DRAG_EVENT_ORDER = false;
private static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400;
private static final int FADE_EMPTY_SCREEN_DURATION = 150;
private static final int ADJACENT_SCREEN_DROP_DURATION = 300;
private static final boolean MAP_NO_RECURSE = false;
private static final boolean MAP_RECURSE = true;
// The screen id used for the empty screen always present to the right.
public final static long EXTRA_EMPTY_SCREEN_ID = -201;
private final static long CUSTOM_CONTENT_SCREEN_ID = -301;
private static final long CUSTOM_CONTENT_GESTURE_DELAY = 200;
private long mTouchDownTime = -1;
private long mCustomContentShowTime = -1;
private LayoutTransition mLayoutTransition;
@Thunk final WallpaperManager mWallpaperManager;
@Thunk IBinder mWindowToken;
private int mOriginalDefaultPage;
private int mDefaultPage;
private ShortcutAndWidgetContainer mDragSourceInternal;
@Thunk LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>();
@Thunk ArrayList<Long> mScreenOrder = new ArrayList<Long>();
@Thunk Runnable mRemoveEmptyScreenRunnable;
@Thunk boolean mDeferRemoveExtraEmptyScreen = false;
@Thunk boolean mAddNewPageOnDrag = true;
/**
* CellInfo for the cell that is currently being dragged
*/
private CellLayout.CellInfo mDragInfo;
/**
* Target drop area calculated during last acceptDrop call.
*/
@Thunk int[] mTargetCell = new int[2];
private int mDragOverX = -1;
private int mDragOverY = -1;
private static Rect mLandscapeCellLayoutMetrics = null;
private static Rect mPortraitCellLayoutMetrics = null;
CustomContentCallbacks mCustomContentCallbacks;
boolean mCustomContentShowing;
private float mLastCustomContentScrollProgress = -1f;
private String mCustomContentDescription = "";
/**
* The CellLayout that is currently being dragged over
*/
@Thunk 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;
@Thunk Launcher mLauncher;
@Thunk IconCache mIconCache;
@Thunk 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 static final Rect sTempRect = new Rect();
private final int[] mTempXY = new int[2];
@Thunk float[] mDragViewVisualCenter = new float[2];
private float[] mTempCellLayoutCenterCoordinates = new float[2];
private int[] mTempVisiblePagesRange = new int[2];
private SpringLoadedDragController mSpringLoadedDragController;
private float mSpringLoadedShrinkFactor;
private float mOverviewModeShrinkFactor;
// State variable that indicates whether the pages are small (ie when you're
// in all apps or customize mode)
enum State {
NORMAL (SearchDropTargetBar.State.SEARCH_BAR),
NORMAL_HIDDEN (SearchDropTargetBar.State.INVISIBLE),
SPRING_LOADED (SearchDropTargetBar.State.DROP_TARGET),
OVERVIEW (SearchDropTargetBar.State.INVISIBLE),
OVERVIEW_HIDDEN (SearchDropTargetBar.State.INVISIBLE);
private final SearchDropTargetBar.State mBarState;
State(SearchDropTargetBar.State searchBarState) {
mBarState = searchBarState;
}
public SearchDropTargetBar.State getSearchDropTargetBarState() {
return mBarState;
}
};
private State mState = State.NORMAL;
private boolean mIsSwitchingState = false;
boolean mAnimatingViewIntoPlace = 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;
@Thunk Bitmap mDragOutline = null;
public static final int DRAG_BITMAP_PADDING = 2;
private boolean mWorkspaceFadeInAdjacentScreens;
WallpaperOffsetInterpolator mWallpaperOffset;
@Thunk boolean mWallpaperIsLiveWallpaper;
@Thunk int mNumPagesForWallpaperParallax;
@Thunk float mLastSetWallpaperOffsetSteps = 0;
@Thunk Runnable mDelayedResizeRunnable;
private Runnable mDelayedSnapToPageRunnable;
// Variables relating to the creation of user folders by hovering shortcuts over shortcuts
private static final int FOLDER_CREATION_TIMEOUT = 0;
public static final int REORDER_TIMEOUT = 350;
private final Alarm mFolderCreationAlarm = new Alarm();
private final Alarm mReorderAlarm = new Alarm();
@Thunk FolderRingAnimator mDragFolderRingAnimator = null;
private FolderIcon mDragOverFolderIcon = null;
private boolean mCreateUserFolderOnDrop = false;
private boolean mAddToExistingFolderOnDrop = false;
private float mMaxDistanceForFolderCreation;
private final Canvas mCanvas = new Canvas();
// 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;
@Thunk int mLastReorderX = -1;
@Thunk int mLastReorderY = -1;
private SparseArray<Parcelable> mSavedStates;
private final ArrayList<Integer> mRestoredPages = new ArrayList<Integer>();
private float mCurrentScale;
private float mTransitionProgress;
@Thunk Runnable mDeferredAction;
private boolean mDeferDropAfterUninstall;
private boolean mUninstallSuccessful;
// State related to Launcher Overlay
LauncherOverlay mLauncherOverlay;
boolean mScrollInteractionBegan;
boolean mStartedSendingScrollEvents;
boolean mShouldSendPageSettled;
int mLastOverlaySroll = 0;
// Handles workspace state transitions
private WorkspaceStateTransitionAnimation mStateTransitionAnimation;
private AccessibilityDelegate mPagesAccessibilityDelegate;
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);
mOutlineHelper = HolographicOutlineHelper.obtain(context);
mLauncher = (Launcher) context;
mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this);
final Resources res = getResources();
DeviceProfile grid = mLauncher.getDeviceProfile();
mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens();
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) / 100f;
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);
}
@Override
public void setInsets(Rect insets) {
mInsets.set(insets);
CellLayout customScreen = getScreenWithId(CUSTOM_CONTENT_SCREEN_ID);
if (customScreen != null) {
View customContent = customScreen.getShortcutsAndWidgets().getChildAt(0);
if (customContent instanceof Insettable) {
((Insettable) customContent).setInsets(mInsets);
}
}
}
// estimate the size of a widget with spans hSpan, vSpan. return MAX_VALUE for each
// dimension if unsuccessful
public int[] estimateItemSize(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, itemInfo.spanX, itemInfo.spanY);
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;
}
@Override
public void onDragStart(final DragSource source, ItemInfo info, int dragAction) {
if (ENFORCE_DRAG_EVENT_ORDER) {
enfoceDragParity("onDragStart", 0, 0);
}
updateChildrenLayersEnabled(false);
mLauncher.lockScreenOrientation();
mLauncher.onInteractionBegin();
// Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging
InstallShortcutReceiver.enableInstallQueue();
if (mAddNewPageOnDrag) {
mDeferRemoveExtraEmptyScreen = false;
addExtraEmptyScreenOnDrag();
}
}
public void setAddNewPageOnDrag(boolean addPage) {
mAddNewPageOnDrag = addPage;
}
public void deferRemoveExtraEmptyScreen() {
mDeferRemoveExtraEmptyScreen = true;
}
@Override
public void onDragEnd() {
if (ENFORCE_DRAG_EVENT_ORDER) {
enfoceDragParity("onDragEnd", 0, 0);
}
if (!mDeferRemoveExtraEmptyScreen) {
removeExtraEmptyScreen(true, mDragSourceInternal != null);
}
updateChildrenLayersEnabled(false);
mLauncher.unlockScreenOrientation(false);
// Re-enable any Un/InstallShortcutReceiver and now process any queued items
InstallShortcutReceiver.disableAndFlushInstallQueue(getContext());
mDragSourceInternal = null;
mLauncher.onInteractionEnd();
}
/**
* Initializes various states for this workspace.
*/
protected void initWorkspace() {
mCurrentPage = mDefaultPage;
LauncherAppState app = LauncherAppState.getInstance();
DeviceProfile grid = mLauncher.getDeviceProfile();
mIconCache = app.getIconCache();
setWillNotDraw(false);
setClipChildren(false);
setClipToPadding(false);
setChildrenDrawnWithCacheEnabled(true);
setMinScale(mOverviewModeShrinkFactor);
setupLayoutTransition();
mWallpaperOffset = new WallpaperOffsetInterpolator();
mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx);
// Set the wallpaper dimensions when Launcher starts up
setWallpaperDimension();
setEdgeGlowColor(getResources().getColor(R.color.workspace_edge_effect_color));
}
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
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(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
*/
public 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!");
}
// Inflate the cell layout, but do not add it automatically so that we can get the newly
// created CellLayout.
CellLayout newScreen = (CellLayout) mLauncher.getLayoutInflater().inflate(
R.layout.workspace_screen, this, false /* attachToRoot */);
newScreen.setOnLongClickListener(mLongClickListener);
newScreen.setOnClickListener(mLauncher);
newScreen.setSoundEffectsEnabled(false);
mWorkspaceScreens.put(screenId, newScreen);
mScreenOrder.add(insertIndex, screenId);
addView(newScreen, insertIndex);
LauncherAccessibilityDelegate delegate =
LauncherAppState.getInstance().getAccessibilityDelegate();
if (delegate != null && delegate.isInAccessibleDrag()) {
newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG);
}
return screenId;
}
public void createCustomContentContainer() {
CellLayout customScreen = (CellLayout)
mLauncher.getLayoutInflater().inflate(R.layout.workspace_screen, this, false);
customScreen.disableDragTarget();
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
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
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);
}
// Verify that the child is removed from any existing parent.
if (customContent.getParent() instanceof ViewGroup) {
ViewGroup parent = (ViewGroup) customContent.getParent();
parent.removeView(customContent);
}
customScreen.removeAllViews();
customScreen.addViewToCellLayout(customContent, 0, 0, lp, true);
mCustomContentDescription = description;
mCustomContentCallbacks = callbacks;
}
public void addExtraEmptyScreenOnDrag() {
boolean lastChildOnScreen = false;
boolean childOnFinalScreen = false;
// Cancel any pending removal of empty screen
mRemoveEmptyScreenRunnable = null;
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;
}
private void convertFinalScreenToEmptyScreenIfNecessary() {
if (mLauncher.isWorkspaceLoading()) {
// Invalid and dangerous operation if workspace is loading
Launcher.addDumpLog(TAG, " - workspace loading, skip", true);
return;
}
if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return;
long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1);
if (finalScreenId == CUSTOM_CONTENT_SCREEN_ID) return;
CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId);
// If the final screen is empty, convert it to the extra empty screen
if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 &&
!finalScreen.isDropPending()) {
mWorkspaceScreens.remove(finalScreenId);
mScreenOrder.remove(finalScreenId);
// if this is the last non-custom content screen, convert it to the empty screen
mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen);
mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID);
// Update the model if we have changed any screens
mLauncher.getModel().updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
}
}
public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) {
removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens);
}
public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete,
final int delay, final boolean stripEmptyScreens) {
if (mLauncher.isWorkspaceLoading()) {
// Don't strip empty screens if the workspace is still loading
Launcher.addDumpLog(TAG, " - workspace loading, skip", true);
return;
}
if (delay > 0) {
postDelayed(new Runnable() {
@Override
public void run() {
removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens);
}
}, delay);
return;
}
convertFinalScreenToEmptyScreenIfNecessary();
if (hasExtraEmptyScreen()) {
int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID);
if (getNextPage() == emptyIndex) {
snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION);
fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION,
onComplete, stripEmptyScreens);
} else {
snapToPage(getNextPage(), 0);
fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION,
onComplete, stripEmptyScreens);
}
return;
} else if (stripEmptyScreens) {
// If we're not going to strip the empty screens after removing
// the extra empty screen, do it right away.
stripEmptyScreens();
}
if (onComplete != null) {
onComplete.run();
}
}
private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete,
final boolean stripEmptyScreens) {
// XXX: Do we need to update LM workspace screens below?
PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f);
PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f);
final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID);
mRemoveEmptyScreenRunnable = new Runnable() {
@Override
public void run() {
if (hasExtraEmptyScreen()) {
mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID);
mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID);
removeView(cl);
if (stripEmptyScreens) {
stripEmptyScreens();
}
}
}
};
ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha);
oa.setDuration(duration);
oa.setStartDelay(delay);
oa.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
if (mRemoveEmptyScreenRunnable != null) {
mRemoveEmptyScreenRunnable.run();
}
if (onComplete != null) {
onComplete.run();
}
}
});
oa.start();
}
public boolean hasExtraEmptyScreen() {
int nScreens = getChildCount();
nScreens = nScreens - numCustomPages();
return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && nScreens > 1;
}
public long commitExtraEmptyScreen() {
if (mLauncher.isWorkspaceLoading()) {
// Invalid and dangerous operation if workspace is loading
Launcher.addDumpLog(TAG, " - workspace loading, skip", true);
return -1;
}
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) {
int index = mWorkspaceScreens.indexOfValue(layout);
if (index != -1) {
return mWorkspaceScreens.keyAt(index);
}
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;
}
public ArrayList<Long> getScreenOrder() {
return mScreenOrder;
}
public void stripEmptyScreens() {
if (mLauncher.isWorkspaceLoading()) {
// Don't strip empty screens if the workspace is still loading.
// This is dangerous and can result in data loss.
Launcher.addDumpLog(TAG, " - workspace loading, skip", true);
return;
}
if (isPageMoving()) {
mStripScreensOnPageStopMoving = true;
return;
}
int currentPage = getNextPage();
ArrayList<Long> removeScreens = new ArrayList<Long>();
int total = mWorkspaceScreens.size();
for (int i = 0; i < total; i++) {
long id = mWorkspaceScreens.keyAt(i);
CellLayout cl = mWorkspaceScreens.valueAt(i);
if (id >= 0 && cl.getShortcutsAndWidgets().getChildCount() == 0) {
removeScreens.add(id);
}
}
LauncherAccessibilityDelegate delegate =
LauncherAppState.getInstance().getAccessibilityDelegate();
// 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++;
}
if (delegate != null && delegate.isInAccessibleDrag()) {
cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG);
}
removeView(cl);
} else {
// if this is the last non-custom content screen, convert it to the empty screen
mRemoveEmptyScreenRunnable = null;
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(new HotseatIconKeyEventListener());
// 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
ItemInfo info = (ItemInfo) child.getTag();
int childId = mLauncher.getViewIdForItem(info);
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.
*/
@SuppressLint("ClickableViewAccessibility")
@Override
public boolean onTouch(View v, MotionEvent event) {
return (workspaceInModalState() || !isFinishedSwitchingState())
|| (!workspaceInModalState() && 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 (workspaceInModalState() || !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 != null) {
onWallpaperTap(ev);
}
}
}
return super.onInterceptTouchEvent(ev);
}
@Override
public boolean onGenericMotionEvent(MotionEvent event) {
// Ignore pointer scroll events if the custom content doesn't allow scrolling.
if ((getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID)
&& (mCustomContentCallbacks != null)
&& !mCustomContentCallbacks.isScrollingAllowed()) {
return false;
}
return super.onGenericMotionEvent(event);
}
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 != null && v.getTag() instanceof LauncherAppWidgetInfo) {
LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag();
LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) info.hostView;
if (lahv != null && lahv.isReinflateRequired()) {
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 = mIsRtl ? deltaX < 0 : deltaX > 0;
boolean onCustomContentScreen =
getScreenIdForPageIndex(getCurrentPage()) == CUSTOM_CONTENT_SCREEN_ID;
if (swipeInIgnoreDirection && onCustomContentScreen && passRightSwipesToCustomContent) {
// Pass swipes to the right to the custom content page.
return;
}
if (onCustomContentScreen && (mCustomContentCallbacks != null)
&& !mCustomContentCallbacks.isScrollingAllowed()) {
// Don't allow workspace scrolling if the current custom content screen doesn't allow
// scrolling.
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);
}
}
}
protected void onPageEndMoving() {
super.onPageEndMoving();
if (isHardwareAccelerated()) {
updateChildrenLayersEnabled(false);
} else {
clearChildrenCache();
}
if (mDragController.isDragging()) {
if (workspaceInModalState()) {
// 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();
}
}
if (mDelayedResizeRunnable != null) {
mDelayedResizeRunnable.run();
mDelayedResizeRunnable = null;
}
if (mDelayedSnapToPageRunnable != null) {
mDelayedSnapToPageRunnable.run();
mDelayedSnapToPageRunnable = null;
}
if (mStripScreensOnPageStopMoving) {
stripEmptyScreens();
mStripScreensOnPageStopMoving = false;
}
if (mShouldSendPageSettled) {
mLauncherOverlay.onScrollSettled();
mShouldSendPageSettled = false;
}
}
protected void onScrollInteractionBegin() {
super.onScrollInteractionEnd();
mScrollInteractionBegan = true;
}
protected void onScrollInteractionEnd() {
super.onScrollInteractionEnd();
mScrollInteractionBegan = false;
if (mStartedSendingScrollEvents) {
mStartedSendingScrollEvents = false;
mLauncherOverlay.onScrollInteractionEnd();
}
}
public void setLauncherOverlay(LauncherOverlay overlay) {
mLauncherOverlay = overlay;
}
@Override
protected void overScroll(float amount) {
boolean shouldOverScroll = (amount <= 0 && (!hasCustomContent() || mIsRtl)) ||
(amount >= 0 && (!hasCustomContent() || !mIsRtl));
boolean shouldScrollOverlay = mLauncherOverlay != null &&
((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl));
boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlaySroll != 0 &&
((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl));
if (shouldScrollOverlay) {
if (!mStartedSendingScrollEvents && mScrollInteractionBegan) {
mStartedSendingScrollEvents = true;
mLauncherOverlay.onScrollInteractionBegin();
mShouldSendPageSettled = true;
}
int screenSize = getViewportWidth();
float f = (amount / screenSize);
int progress = (int) Math.abs((f * 100));
mLastOverlaySroll = progress;
mLauncherOverlay.onScrollChange(progress, mIsRtl);
} else if (shouldOverScroll) {
dampedOverScroll(amount);
}
if (shouldZeroOverlay) {
mLauncherOverlay.onScrollChange(0, mIsRtl);
}
}
@Override
protected void getEdgeVerticalPostion(int[] pos) {
View child = getChildAt(getPageCount() - 1);
pos[0] = child.getTop();
pos[1] = child.getBottom();
}
@Override
protected void notifyPageSwitchListener() {
super.notifyPageSwitchListener();
if (hasCustomContent() && getNextPage() == 0 && !mCustomContentShowing) {
mCustomContentShowing = true;
if (mCustomContentCallbacks != null) {
mCustomContentCallbacks.onShow(false);
mCustomContentShowTime = System.currentTimeMillis();
}
} else if (hasCustomContent() && getNextPage() != 0 && mCustomContentShowing) {
mCustomContentShowing = false;
if (mCustomContentCallbacks != null) {
mCustomContentCallbacks.onHide();
}
}
}
protected CustomContentCallbacks getCustomContentCallbacks() {
return mCustomContentCallbacks;
}
protected void setWallpaperDimension() {
new AsyncTask<Void, Void, Void>() {
public Void doInBackground(Void ... args) {
String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY;
SharedPreferences sp =
mLauncher.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS);
WallpaperUtils.suggestWallpaperDimension(mLauncher.getResources(),
sp, mLauncher.getWindowManager(), mWallpaperManager,
mLauncher.overrideWallpaperDimensions());
return null;
}
}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
}
protected void snapToPage(int whichPage, Runnable r) {
snapToPage(whichPage, SLOW_PAGE_SNAP_ANIMATION_DURATION, r);
}
protected void snapToPage(int whichPage, int duration, Runnable r) {
if (mDelayedSnapToPageRunnable != null) {
mDelayedSnapToPageRunnable.run();
}
mDelayedSnapToPageRunnable = r;
snapToPage(whichPage, duration);
}
public void snapToScreenId(long screenId) {
snapToScreenId(screenId, null);
}
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() {
// TODO: do different behavior if it's a live wallpaper?
// Don't use up all the wallpaper parallax until you have at least
// MIN_PARALLAX_PAGE_SPAN pages
int numScrollingPages = getNumScreensExcludingEmptyAndCustom();
int parallaxPageSpan;
if (mWallpaperIsLiveWallpaper) {
parallaxPageSpan = numScrollingPages - 1;
} else {
parallaxPageSpan = Math.max(MIN_PARALLAX_PAGE_SPAN, numScrollingPages - 1);
}
mNumPagesForWallpaperParallax = parallaxPageSpan;
if (getChildCount() <= 1) {
if (mIsRtl) {
return 1 - 1.0f/mNumPagesForWallpaperParallax;
}
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 (mIsRtl) {
int temp = firstIndex;
firstIndex = lastIndex;
lastIndex = temp;
}
int firstPageScrollX = getScrollForPage(firstIndex);
int scrollRange = getScrollForPage(lastIndex) - firstPageScrollX;
if (scrollRange == 0) {
return 0;
} else {
// 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 adjustedScroll =
getScrollX() - firstPageScrollX - getLayoutTransitionOffsetForPage(0);
float offset = Math.min(1, adjustedScroll / (float) scrollRange);
offset = Math.max(0, offset);
// On RTL devices, push the wallpaper offset to the right if we don't have enough
// pages (ie if numScrollingPages < MIN_PARALLAX_PAGE_SPAN)
if (!mWallpaperIsLiveWallpaper && numScrollingPages < MIN_PARALLAX_PAGE_SPAN
&& mIsRtl) {
return offset * (parallaxPageSpan - numScrollingPages + 1) / parallaxPageSpan;
}
return offset * (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))
float xOffset = 1.0f / mNumPagesForWallpaperParallax;
if (xOffset != mLastSetWallpaperOffsetSteps) {
mWallpaperManager.setWallpaperOffsetSteps(xOffset, 1.0f);
mLastSetWallpaperOffsetSteps = xOffset;
}
}
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();
}
@Override
public void announceForAccessibility(CharSequence text) {
// Don't announce if apps is on top of us.
if (!mLauncher.isAppsViewVisible()) {
super.announceForAccessibility(text);
}
}
public void showOutlinesTemporarily() {
if (!mIsPageMoving && !isTouchActive()) {
snapToPage(mCurrentPage);
}
}
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) {
if (mWorkspaceFadeInAdjacentScreens &&
!workspaceInModalState() &&
!mIsSwitchingState) {
for (int i = numCustomPages(); 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);
}
}
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void enableAccessibleDrag(boolean enable) {
for (int i = 0; i < getChildCount(); i++) {
CellLayout child = (CellLayout) getChildAt(i);
child.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG);
}
if (enable) {
// We need to allow our individual children to become click handlers in this case
setOnClickListener(null);
} else {
// Reset our click listener
setOnClickListener(mLauncher);
}
mLauncher.getSearchDropTargetBar().enableAccessibleDrag(enable);
mLauncher.getHotseat().getLayout()
.enableAccessibleDrag(enable, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG);
}
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 (mIsRtl) {
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 && !workspaceInModalState()) {
cc.setVisibility(VISIBLE);
}
mLastCustomContentScrollProgress = progress;
// We should only update the drag layer background alpha if we are not in all apps or the
// widgets tray
if (mState == State.NORMAL) {
mLauncher.getDragLayer().setBackgroundAlpha(progress == 1 ? 0 : 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) {
mLauncher.showOverviewMode(true);
}
};
return listener;
}
@Override
protected void screenScrolled(int screenCenter) {
updatePageAlphaValues(screenCenter);
updateStateForCustomContent(screenCenter);
enableHwLayersOnVisiblePages();
}
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);
}
}
// Update wallpaper dimensions if they were changed since last onResume
// (we also always set the wallpaper dimensions in the constructor)
if (LauncherAppState.getInstance().hasWallpaperChangedSinceLastCheck()) {
setWallpaperDimension();
}
mWallpaperIsLiveWallpaper = mWallpaperManager.getWallpaperInfo() != null;
// Force the wallpaper offset steps to be set again, because another app might have changed
// them
mLastSetWallpaperOffsetSteps = 0f;
}
@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) {
super.onDraw(canvas);
// Call back to LauncherModel to finish binding after the first draw
post(mBindPages);
}
@Override
protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) {
if (!mLauncher.isAppsViewVisible()) {
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 (workspaceInModalState()) {
return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
}
return super.getDescendantFocusability();
}
@Override
public void addFocusables(ArrayList<View> views, int direction, int focusableMode) {
if (!mLauncher.isAppsViewVisible()) {
final Folder openFolder = getOpenFolder();
if (openFolder != null) {
openFolder.addFocusables(views, direction);
} else {
super.addFocusables(views, direction, focusableMode);
}
}
}
public boolean workspaceInModalState() {
return mState != State.NORMAL;
}
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);
}
}
}
@Thunk void updateChildrenLayersEnabled(boolean force) {
boolean 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);
}
@Override
protected void getVisiblePages(int[] range) {
super.getVisiblePages(range);
if (mState == State.OVERVIEW || mState == State.SPRING_LOADED) {
// In overview mode, make sure that the two side pages are visible.
range[0] = Math.min(range[0], Math.max(getCurrentPage() - 1, numCustomPages()));
range[1] = Math.max(range[0], Math.min(getCurrentPage() + 1, getPageCount() - 1));
}
}
protected void onWallpaperTap(MotionEvent ev) {
final int[] position = mTempXY;
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);
}
/*
*
* 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).
*
*/
private static Rect getDrawableBounds(Drawable d) {
Rect bounds = new Rect();
d.copyBounds(bounds);
if (bounds.width() == 0 || bounds.height() == 0) {
bounds.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
} else {
bounds.offsetTo(0, 0);
}
if (d instanceof PreloadIconDrawable) {
int inset = -((PreloadIconDrawable) d).getOutset();
bounds.inset(inset, inset);
}
return bounds;
}
public void onExternalDragStartedWithItem(View v) {
// Compose a drag bitmap with the view scaled to the icon size
DeviceProfile grid = mLauncher.getDeviceProfile();
int iconSize = grid.iconSizePx;
int bmpWidth = v.getMeasuredWidth();
int bmpHeight = v.getMeasuredHeight();
// If this is a text view, use its drawable instead
if (v instanceof TextView) {
Drawable d = getTextViewIcon((TextView) v);
Rect bounds = getDrawableBounds(d);
bmpWidth = bounds.width();
bmpHeight = bounds.height();
}
// Compose the bitmap to create the icon from
Bitmap b = Bitmap.createBitmap(bmpWidth, bmpHeight,
Bitmap.Config.ARGB_8888);
mCanvas.setBitmap(b);
drawDragView(v, mCanvas, 0);
mCanvas.setBitmap(null);
// The outline is used to visualize where the item will land if dropped
mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, iconSize, iconSize, true);
}
public void onDragStartedWithItem(PendingAddItemInfo info, Bitmap b, boolean clipAlpha) {
int[] size = estimateItemSize(info, false);
// The outline is used to visualize where the item will land if dropped
mDragOutline = createDragOutline(b, DRAG_BITMAP_PADDING, size[0], size[1], clipAlpha);
}
public void exitWidgetResizeMode() {
DragLayer dragLayer = mLauncher.getDragLayer();
dragLayer.clearAllResizeFrames();
}
@Override
protected void getFreeScrollPageRange(int[] range) {
getOverviewModePages(range);
}
private 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);
}
public void onStartReordering() {
super.onStartReordering();
// Reordering handles its own animations, disable the automatic ones.
disableLayoutTransitions();
}
public void onEndReordering() {
super.onEndReordering();
if (mLauncher.isWorkspaceLoading()) {
// Invalid and dangerous operation if workspace is loading
return;
}
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 void snapToPageFromOverView(int whichPage) {
mStateTransitionAnimation.snapToPageFromOverView(whichPage);
}
int getOverviewModeTranslationY() {
DeviceProfile grid = mLauncher.getDeviceProfile();
Rect workspacePadding = grid.getWorkspacePadding(Utilities.isRtl(getResources()));
int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight();
int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight());
int workspaceTop = mInsets.top + workspacePadding.top;
int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom;
int overviewTop = mInsets.top;
int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight;
int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2;
int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2;
return -workspaceOffsetTopEdge + overviewOffsetTopEdge;
}
/**
* Sets the current workspace {@link State}, returning an animation transitioning the workspace
* to that new state.
*/
public Animator setStateWithAnimation(State toState, boolean animated,
HashMap<View, Integer> layerViews) {
// Create the animation to the new state
Animator workspaceAnim = mStateTransitionAnimation.getAnimationToState(mState,
toState, animated, layerViews);
// Update the current state
mState = toState;
updateAccessibilityFlags();
if (mState == State.OVERVIEW || mState == State.SPRING_LOADED) {
// Redraw pages, as we might want to draw pages which were not visible.
invalidate();
}
return workspaceAnim;
}
State getState() {
return mState;
}
public void updateAccessibilityFlags() {
if (Utilities.ATLEAST_LOLLIPOP) {
int total = getPageCount();
for (int i = numCustomPages(); i < total; i++) {
updateAccessibilityFlags((CellLayout) getPageAt(i), i);
}
setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW)
? IMPORTANT_FOR_ACCESSIBILITY_AUTO
: IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);
} else {
int accessible = mState == State.NORMAL ?
IMPORTANT_FOR_ACCESSIBILITY_AUTO :
IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS;
setImportantForAccessibility(accessible);
}
}
private void updateAccessibilityFlags(CellLayout page, int pageNo) {
if (mState == State.OVERVIEW) {
page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
page.getShortcutsAndWidgets().setImportantForAccessibility(
IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);
page.setContentDescription(getPageDescription(pageNo));
if (mPagesAccessibilityDelegate == null) {
mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this);
}
page.setAccessibilityDelegate(mPagesAccessibilityDelegate);
} else {
int accessible = mState == State.NORMAL ?
IMPORTANT_FOR_ACCESSIBILITY_AUTO :
IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS;
page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
page.getShortcutsAndWidgets().setImportantForAccessibility(accessible);
page.setContentDescription(null);
page.setAccessibilityDelegate(null);
}
}
@Override
public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) {
mIsSwitchingState = true;
// Invalidate here to ensure that the pages are rendered during the state change transition.
invalidate();
updateChildrenLayersEnabled(false);
hideCustomContentIfNecessary();
}
@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) {
mIsSwitchingState = false;
updateChildrenLayersEnabled(false);
showCustomContentIfNecessary();
}
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()) {
disableLayoutTransitions();
mWorkspaceScreens.get(CUSTOM_CONTENT_SCREEN_ID).setVisibility(INVISIBLE);
enableLayoutTransitions();
}
}
/**
* Returns the drawable for the given text view.
*/
public static Drawable getTextViewIcon(TextView tv) {
final Drawable[] drawables = tv.getCompoundDrawables();
for (int i = 0; i < drawables.length; i++) {
if (drawables[i] != null) {
return drawables[i];
}
}
return null;
}
/**
* 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 static void drawDragView(View v, Canvas destCanvas, int padding) {
destCanvas.save();
if (v instanceof TextView) {
Drawable d = getTextViewIcon((TextView) v);
Rect bounds = getDrawableBounds(d);
destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top);
d.draw(destCanvas);
} else {
final Rect clipRect = sTempRect;
v.getDrawingRect(clipRect);
boolean textVisible = false;
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;
}
}
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.
* @param expectedPadding padding to add to the drag view. If a different padding was used
* its value will be changed
*/
public Bitmap createDragBitmap(View v, AtomicInteger expectedPadding) {
Bitmap b;
int padding = expectedPadding.get();
if (v instanceof TextView) {
Drawable d = getTextViewIcon((TextView) v);
Rect bounds = getDrawableBounds(d);
b = Bitmap.createBitmap(bounds.width() + padding,
bounds.height() + padding, Bitmap.Config.ARGB_8888);
expectedPadding.set(padding - bounds.left - bounds.top);
} else {
b = Bitmap.createBitmap(
v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888);
}
mCanvas.setBitmap(b);
drawDragView(v, mCanvas, padding);
mCanvas.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, 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);
mCanvas.setBitmap(b);
drawDragView(v, mCanvas, padding);
mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor);
mCanvas.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, 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);
mCanvas.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);
mCanvas.drawBitmap(orig, src, dst, null);
mOutlineHelper.applyExpensiveOutlineWithBlur(b, mCanvas, outlineColor, outlineColor,
clipAlpha);
mCanvas.setBitmap(null);
return b;
}
public void startDrag(CellLayout.CellInfo cellInfo) {
startDrag(cellInfo, false);
}
@Override
public void startDrag(CellLayout.CellInfo cellInfo, boolean accessible) {
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);
beginDragShared(child, this, accessible);
}
public void beginDragShared(View child, DragSource source, boolean accessible) {
beginDragShared(child, new Point(), source, accessible);
}
public void beginDragShared(View child, Point relativeTouchPos, DragSource source,
boolean accessible) {
child.clearFocus();
child.setPressed(false);
// The outline is used to visualize where the item will land if dropped
mDragOutline = createDragOutline(child, DRAG_BITMAP_PADDING);
mLauncher.onDragStarted(child);
// The drag bitmap follows the touch point around on the screen
AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING);
final Bitmap b = createDragBitmap(child, 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
- padding.get() / 2);
DeviceProfile grid = mLauncher.getDeviceProfile();
Point dragVisualizeOffset = null;
Rect dragRect = null;
if (child instanceof BubbleTextView) {
BubbleTextView icon = (BubbleTextView) child;
int iconSize = grid.iconSizePx;
int top = child.getPaddingTop();
int left = (bmpWidth - iconSize) / 2;
int right = left + iconSize;
int bottom = top + iconSize;
if (icon.isLayoutHorizontal()) {
// If the layout is horizontal, then if we are just picking up the icon, then just
// use the child position since the icon is top-left aligned. Otherwise, offset
// the drag layer position horizontally so that the icon is under the current
// touch position.
if (icon.getIcon().getBounds().contains(relativeTouchPos.x, relativeTouchPos.y)) {
dragLayerX = Math.round(mTempXY[0]);
} else {
dragLayerX = Math.round(mTempXY[0] + relativeTouchPos.x - (bmpWidth / 2));
}
}
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(-padding.get() / 2, padding.get() / 2);
dragRect = new Rect(left, top, right, bottom);
} else if (child instanceof FolderIcon) {
int previewSize = grid.folderIconSizePx;
dragVisualizeOffset = new Point(-padding.get() / 2,
padding.get() / 2 - child.getPaddingTop());
dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize);
}
// Clear the pressed state if necessary
if (child instanceof BubbleTextView) {
BubbleTextView icon = (BubbleTextView) child;
icon.clearPressedBackground();
}
Object dragObject = child.getTag();
if (!(dragObject instanceof ItemInfo)) {
String msg = "Drag started with a view that has no tag set. This "
+ "will cause a crash (issue 11627249) down the line. "
+ "View: " + child + " tag: " + child.getTag();
throw new IllegalStateException(msg);
}
DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source,
(ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset,
dragRect, scale, accessible);
dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor());
if (child.getParent() instanceof ShortcutAndWidgetContainer) {
mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent();
}
b.recycle();
}
public void beginExternalDragShared(View child, DragSource source) {
DeviceProfile grid = mLauncher.getDeviceProfile();
int iconSize = grid.iconSizePx;
// Notify launcher of drag start
mLauncher.onDragStarted(child);
// Compose a new drag bitmap that is of the icon size
AtomicInteger padding = new AtomicInteger(DRAG_BITMAP_PADDING);
final Bitmap tmpB = createDragBitmap(child, padding);
Bitmap b = Bitmap.createBitmap(iconSize, iconSize, Bitmap.Config.ARGB_8888);
Paint p = new Paint();
p.setFilterBitmap(true);
mCanvas.setBitmap(b);
mCanvas.drawBitmap(tmpB, new Rect(0, 0, tmpB.getWidth(), tmpB.getHeight()),
new Rect(0, 0, iconSize, iconSize), p);
mCanvas.setBitmap(null);
// Find the child's location on the screen
int bmpWidth = tmpB.getWidth();
float iconScale = (float) bmpWidth / iconSize;
float scale = mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY) * iconScale;
int dragLayerX = Math.round(mTempXY[0] - (bmpWidth - scale * child.getWidth()) / 2);
int dragLayerY = Math.round(mTempXY[1]);
// 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.
Point dragVisualizeOffset = new Point(-padding.get() / 2, padding.get() / 2);
Rect dragRect = new Rect(0, 0, iconSize, iconSize);
Object dragObject = child.getTag();
if (!(dragObject instanceof ItemInfo)) {
String msg = "Drag started with a view that has no tag set. This "
+ "will cause a crash (issue 11627249) down the line. "
+ "View: " + child + " tag: " + child.getTag();
throw new IllegalStateException(msg);
}
// Start the drag
DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source,
(ItemInfo) dragObject, DragController.DRAG_ACTION_MOVE, dragVisualizeOffset,
dragRect, scale, false);
dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor());
// Recycle temporary bitmaps
tmpB.recycle();
}
public boolean transitionStateShouldAllowDrop() {
return ((!isSwitchingState() || mTransitionProgress > 0.5f) &&
(mState == State.NORMAL || mState == State.SPRING_LOADED));
}
/**
* {@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 = d.getVisualCenter(mDragViewVisualCenter);
// We want the point to be mapped to the dragTarget.
if (mLauncher.isHotseatLayout(dropTargetLayout)) {
mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
} else {
mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter);
}
int spanX = 1;
int spanY = 1;
if (mDragInfo != null) {
final CellLayout.CellInfo dragCellInfo = mDragInfo;
spanX = dragCellInfo.spanX;
spanY = dragCellInfo.spanY;
} else {
spanX = d.dragInfo.spanX;
spanY = d.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 (mCreateUserFolderOnDrop && willCreateUserFolder(d.dragInfo,
dropTargetLayout, mTargetCell, distance, true)) {
return true;
}
if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder(d.dragInfo,
dropTargetLayout, mTargetCell, distance)) {
return true;
}
int[] resultSpan = new int[2];
mTargetCell = dropTargetLayout.performReorder((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(ItemInfo 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;
}
@Override
public void prepareAccessibilityDrop() { }
public void onDrop(final DragObject d) {
mDragViewVisualCenter = d.getVisualCenter(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);
}
}
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)) {
return;
}
if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell,
distance, d, false)) {
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 = 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.performReorder((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
CellLayout parentCell = getParentCellLayoutForView(cell);
if (parentCell != null) {
parentCell.removeView(cell);
} else if (ProviderConfig.IS_DOGFOOD_BUILD) {
throw new NullPointerException("mDragInfo.cell has null parent");
}
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;
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
&& !d.accessibleDrag) {
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();
}
}
};
mAnimatingViewIntoPlace = true;
if (d.dragView.hasDrawn()) {
final ItemInfo info = (ItemInfo) cell.getTag();
boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET
|| info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET;
if (isWidget) {
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);
}
}
/**
* Computes the area relative to dragLayer which is used to display a page.
*/
public void getPageAreaRelativeToDragLayer(Rect outArea) {
CellLayout child = (CellLayout) getChildAt(getNextPage());
if (child == null) {
return;
}
ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets();
// Use the absolute left instead of the child left, as we want the visible area
// irrespective of the visible child. Since the view can only scroll horizontally, the
// top position is not affected.
mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft();
mTempXY[1] = child.getTop() + boundingLayout.getTop();
float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY);
outArea.set(mTempXY[0], mTempXY[1],
(int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()),
(int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight()));
}
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;
}
@Override
public void onDragEnter(DragObject d) {
if (ENFORCE_DRAG_EVENT_ORDER) {
enfoceDragParity("onDragEnter", 1, 1);
}
mCreateUserFolderOnDrop = false;
mAddToExistingFolderOnDrop = false;
mDropToLayout = null;
CellLayout layout = getCurrentDropLayout();
setCurrentDropLayout(layout);
setCurrentDragOverlappingLayout(layout);
if (!workspaceInModalState()) {
mLauncher.getDragLayer().showPageHints();
}
}
/** 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();
InvariantDeviceProfile inv = app.getInvariantDeviceProfile();
Display display = launcher.getWindowManager().getDefaultDisplay();
Point smallestSize = new Point();
Point largestSize = new Point();
display.getCurrentSizeRange(smallestSize, largestSize);
int countX = (int) inv.numColumns;
int countY = (int) inv.numRows;
boolean isLayoutRtl = Utilities.isRtl(launcher.getResources());
if (orientation == CellLayout.LANDSCAPE) {
if (mLandscapeCellLayoutMetrics == null) {
Rect padding = inv.landscapeProfile.getWorkspacePadding(isLayoutRtl);
int width = largestSize.x - padding.left - padding.right;
int height = smallestSize.y - padding.top - padding.bottom;
mLandscapeCellLayoutMetrics = new Rect();
mLandscapeCellLayoutMetrics.set(
DeviceProfile.calculateCellWidth(width, countX),
DeviceProfile.calculateCellHeight(height, countY), 0, 0);
}
return mLandscapeCellLayoutMetrics;
} else if (orientation == CellLayout.PORTRAIT) {
if (mPortraitCellLayoutMetrics == null) {
Rect padding = inv.portraitProfile.getWorkspacePadding(isLayoutRtl);
int width = smallestSize.x - padding.left - padding.right;
int height = largestSize.y - padding.top - padding.bottom;
mPortraitCellLayoutMetrics = new Rect();
mPortraitCellLayoutMetrics.set(
DeviceProfile.calculateCellWidth(width, countX),
DeviceProfile.calculateCellHeight(height, countY), 0, 0);
}
return mPortraitCellLayoutMetrics;
}
return null;
}
@Override
public void onDragExit(DragObject d) {
if (ENFORCE_DRAG_EVENT_ORDER) {
enfoceDragParity("onDragExit", -1, 0);
}
// 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();
mLauncher.getDragLayer().hidePageHints();
}
private void enfoceDragParity(String event, int update, int expectedValue) {
enfoceDragParity(this, event, update, expectedValue);
for (int i = 0; i < getChildCount(); i++) {
enfoceDragParity(getChildAt(i), event, update, expectedValue);
}
}
private void enfoceDragParity(View v, String event, int update, int expectedValue) {
Object tag = v.getTag(R.id.drag_event_parity);
int value = tag == null ? 0 : (Integer) tag;
value += update;
v.setTag(R.id.drag_event_parity, value);
if (value != expectedValue) {
Log.e(TAG, event + ": Drag contract violated: " + value);
}
}
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.
*/
void mapPointFromSelfToChild(View v, float[] xy) {
xy[0] = xy[0] - v.getLeft();
xy[1] = xy[1] - v.getTop();
}
boolean isPointInSelfOverHotseat(int x, int y) {
mTempXY[0] = x;
mTempXY[1] = y;
mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true);
return mLauncher.getDeviceProfile().isInHotseatRect(mTempXY[0], mTempXY[1]);
}
void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) {
mTempXY[0] = (int) xy[0];
mTempXY[1] = (int) xy[1];
mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true);
mLauncher.getDragLayer().mapCoordInSelfToDescendent(hotseat.getLayout(), mTempXY);
xy[0] = mTempXY[0];
xy[1] = mTempXY[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};
mapPointFromSelfToChild(cl, touchXy);
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;
}
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 || !transitionStateShouldAllowDrop()) return;
CellLayout layout = null;
ItemInfo item = d.dragInfo;
if (item == null) {
if (ProviderConfig.IS_DOGFOOD_BUILD) {
throw new NullPointerException("DragObject has null info");
}
return;
}
// 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 = d.getVisualCenter(mDragViewVisualCenter);
final View child = (mDragInfo == null) ? null : mDragInfo.cell;
// Identify whether we have dragged over a side page
if (workspaceInModalState()) {
if (mLauncher.getHotseat() != null && !isExternalDragWidget(d)) {
if (isPointInSelfOverHotseat(d.x, d.y)) {
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)) {
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);
}
ItemInfo info = 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, d.accessibleDrag);
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)) {
int[] resultSpan = new int[2];
mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY,
child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT);
// 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 accessibleDrag) {
boolean userFolderPending = willCreateUserFolder(info, targetLayout, targetCell, distance,
false);
if (mDragMode == DRAG_MODE_NONE && userFolderPending &&
!mFolderCreationAlarm.alarmPending()) {
FolderCreationAlarmListener listener = new
FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]);
if (!accessibleDrag) {
mFolderCreationAlarm.setOnAlarmListener(listener);
mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT);
} else {
listener.onAlarm(mFolderCreationAlarm);
}
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.performReorder((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);
}
/**
* 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 ItemInfo dragInfo,
final CellLayout cellLayout, boolean insertAtFirst, DragObject d) {
final Runnable exitSpringLoadedRunnable = new Runnable() {
@Override
public void run() {
mLauncher.exitSpringLoadedDragModeDelayed(true,
Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
}
};
ItemInfo info = 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(d.dragInfo, cellLayout, mTargetCell, distance, true)
|| willAddToExistingUserFolder(
d.dragInfo, cellLayout, mTargetCell, distance)) {
findNearestVacantCell = false;
}
}
final ItemInfo item = 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.performReorder((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() {
// Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when
// adding an item that may not be dropped right away (due to a config activity)
// we defer the removal until the activity returns.
deferRemoveExtraEmptyScreen();
// When dragging and dropping from customization tray, we deal with creating
// widgets/shortcuts/folders in a slightly different way
mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell,
item.spanX, item.spanY);
}
};
boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET
|| pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET;
View finalView = isWidget ? ((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 (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null &&
((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 = ((AppInfo) info).makeShortcut();
}
view = mLauncher.createShortcut(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.performReorder((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], 1, 1, 1, 1,
null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL);
} else {
cellLayout.findCellForSpan(mTargetCell, 1, 1);
}
// Add the item to DB before adding to screen ensures that the container and other
// values of the info is properly updated.
LauncherModel.addOrMoveItemInDatabase(mLauncher, info, container, screenId,
mTargetCell[0], mTargetCell[1]);
addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1], info.spanX,
info.spanY, insertAtFirst);
cellLayout.onDropChild(view);
cellLayout.getShortcutsAndWidgets().measureChild(view);
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, this);
resetTransitionTransform(cellLayout);
}
}
}
public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) {
int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(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);
mCanvas.setBitmap(b);
layout.measure(width, height);
layout.layout(0, 0, unScaledSize[0], unScaledSize[1]);
layout.draw(mCanvas);
mCanvas.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();
final 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) {
mLauncher.getDragLayer().removeView(finalView);
}
boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET ||
info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET;
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 (isWidget && 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(mStateTransitionAnimation.getFinalScale());
setScaleY(mStateTransitionAnimation.getFinalScale());
}
}
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 getCurrentPageOffsetFromCustomContent() {
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
*/
@Thunk 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);
}
/**
* 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) {
removeWorkspaceItem(mDragInfo.cell);
}
} else if (mDragInfo != null) {
final CellLayout cellLayout = mLauncher.getCellLayout(
mDragInfo.container, mDragInfo.screenId);
if (cellLayout != null) {
cellLayout.onDropChild(mDragInfo.cell);
} else if (ProviderConfig.IS_DOGFOOD_BUILD) {
throw new RuntimeException("Invalid state: cellLayout == null in "
+ "Workspace#onDropCompleted. Please file a bug. ");
};
}
if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful))
&& mDragInfo.cell != null) {
mDragInfo.cell.setVisibility(VISIBLE);
}
mDragOutline = null;
mDragInfo = null;
}
/**
* For opposite operation. See {@link #addInScreen}.
*/
public void removeWorkspaceItem(View v) {
CellLayout parentCell = getParentCellLayoutForView(v);
if (parentCell != null) {
parentCell.removeView(v);
} else if (ProviderConfig.IS_DOGFOOD_BUILD) {
// When an app is uninstalled using the drop target, we wait until resume to remove
// the icon. We also remove all the corresponding items from the workspace at
// {@link Launcher#bindComponentsRemoved}. That call can come before or after
// {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is.
Log.e(TAG, "mDragInfo.cell has null parent");
}
if (v instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) v);
}
}
@Override
public void deferCompleteDropAfterUninstallActivity() {
mDeferDropAfterUninstall = true;
}
/// maybe move this into a smaller part
@Override
public void onUninstallActivityReturned(boolean success) {
mDeferDropAfterUninstall = false;
mUninstallSuccessful = success;
if (mDeferredAction != null) {
mDeferredAction.run();
}
}
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);
}
if (v instanceof FolderIcon) {
FolderIcon fi = (FolderIcon) v;
fi.getFolder().addItemLocationsInDatabase();
}
}
}
@Override
public float getIntrinsicIconScaleFactor() {
return 1f;
}
@Override
public boolean supportsFlingToDelete() {
return true;
}
@Override
public boolean supportsAppInfoDropTarget() {
return false;
}
@Override
public boolean supportsDeleteDropTarget() {
return true;
}
@Override
public void onFlingToDelete(DragObject d, PointF vec) {
// Do nothing
}
@Override
public void onFlingToDeleteCompleted() {
// Do nothing
}
public boolean isDropEnabled() {
return true;
}
@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);
if (cl != null) {
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 (!workspaceInModalState() && !mIsSwitchingState) {
super.scrollLeft();
}
Folder openFolder = getOpenFolder();
if (openFolder != null) {
openFolder.completeDragExit();
}
}
@Override
public void scrollRight() {
if (!workspaceInModalState() && !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 = !mLauncher.getDeviceProfile().isLandscape;
if (mLauncher.getHotseat() != null && isPortrait) {
Rect r = new Rect();
mLauncher.getHotseat().getHitRect(r);
if (r.contains(x, y)) {
return false;
}
}
boolean result = false;
if (!workspaceInModalState() && !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(final Object tag) {
return (Folder) getFirstMatch(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
return (v instanceof Folder) && (((Folder) v).getInfo() == tag)
&& ((Folder) v).getInfo().opened;
}
});
}
public View getHomescreenIconByItemId(final long id) {
return getFirstMatch(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
return info.id == id;
}
});
}
public View getViewForTag(final Object tag) {
return getFirstMatch(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
return info == tag;
}
});
}
public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) {
return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
return (info instanceof LauncherAppWidgetInfo) &&
((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId;
}
});
}
private View getFirstMatch(final ItemOperator operator) {
final View[] value = new View[1];
mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
if (operator.evaluate(info, v, parent)) {
value[0] = v;
return true;
}
return false;
}
});
return value[0];
}
void clearDropTargets() {
mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
if (v instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) v);
}
// not done, process all the shortcuts
return false;
}
});
}
public void disableShortcutsByPackageName(final ArrayList<String> packages,
final UserHandleCompat user, final int reason) {
final HashSet<String> packageNames = new HashSet<String>();
packageNames.addAll(packages);
mapOverItems(MAP_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
if (info instanceof ShortcutInfo && v instanceof BubbleTextView) {
ShortcutInfo shortcutInfo = (ShortcutInfo) info;
ComponentName cn = shortcutInfo.getTargetComponent();
if (user.equals(shortcutInfo.user) && cn != null
&& packageNames.contains(cn.getPackageName())) {
shortcutInfo.isDisabled |= reason;
BubbleTextView shortcut = (BubbleTextView) v;
shortcut.applyFromShortcutInfo(shortcutInfo, mIconCache);
if (parent != null) {
parent.invalidate();
}
}
}
// process all the shortcuts
return false;
}
});
}
// 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 UserHandleCompat user) {
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())
&& info.user.equals(user)) {
cns.add(cn);
return true;
}
return false;
}
};
LauncherModel.filterItemInfos(infos, filter);
// Remove the affected components
removeItemsByComponentName(cns, user);
}
/**
* Removes items that match the item 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 removeItemsByComponentName(final HashSet<ComponentName> componentNames,
final UserHandleCompat user) {
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) && info.user.equals(user)) {
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) && info.user.equals(user)) {
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();
}
interface ItemOperator {
/**
* Process the next itemInfo, possibly with side-effect on {@link ItemOperator#value}.
*
* @param info info for the shortcut
* @param view view for the shortcut
* @param parent containing folder, or null
* @return true if done, false to continue the map
*/
public boolean evaluate(ItemInfo info, View view, View parent);
}
/**
* Map the operator over the shortcuts and widgets, return the first-non-null value.
*
* @param recurse true: iterate over folder children. false: op get the folders themselves.
* @param op the operator to map over the shortcuts
*/
void mapOverItems(boolean recurse, ItemOperator op) {
ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers();
final int containerCount = containers.size();
for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) {
ShortcutAndWidgetContainer container = containers.get(containerIdx);
// map over all the shortcuts on the workspace
final int itemCount = container.getChildCount();
for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) {
View item = container.getChildAt(itemIdx);
ItemInfo info = (ItemInfo) item.getTag();
if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) {
FolderIcon folder = (FolderIcon) item;
ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder();
// map over all the children in the folder
final int childCount = folderChildren.size();
for (int childIdx = 0; childIdx < childCount; childIdx++) {
View child = folderChildren.get(childIdx);
info = (ItemInfo) child.getTag();
if (op.evaluate(info, child, folder)) {
return;
}
}
} else {
if (op.evaluate(info, item, null)) {
return;
}
}
}
}
}
void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) {
final HashSet<ShortcutInfo> updates = new HashSet<ShortcutInfo>(shortcuts);
mapOverItems(MAP_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
if (info instanceof ShortcutInfo && v instanceof BubbleTextView &&
updates.contains(info)) {
ShortcutInfo si = (ShortcutInfo) info;
BubbleTextView shortcut = (BubbleTextView) v;
Drawable oldIcon = getTextViewIcon(shortcut);
boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable)
&& ((PreloadIconDrawable) oldIcon).hasNotCompleted();
shortcut.applyFromShortcutInfo(si, mIconCache,
si.isPromise() != oldPromiseState);
if (parent != null) {
parent.invalidate();
}
}
// process all the shortcuts
return false;
}
});
}
public void removeAbandonedPromise(String packageName, UserHandleCompat user) {
ArrayList<String> packages = new ArrayList<String>(1);
packages.add(packageName);
LauncherModel.deletePackageFromDatabase(mLauncher, packageName, user);
removeItemsByPackageName(packages, user);
}
public void updateRestoreItems(final HashSet<ItemInfo> updates) {
mapOverItems(MAP_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v, View parent) {
if (info instanceof ShortcutInfo && v instanceof BubbleTextView
&& updates.contains(info)) {
((BubbleTextView) v).applyState(false);
} else if (v instanceof PendingAppWidgetHostView
&& info instanceof LauncherAppWidgetInfo
&& updates.contains(info)) {
((PendingAppWidgetHostView) v).applyState();
}
// process all the shortcuts
return false;
}
});
}
void widgetsRestored(ArrayList<LauncherAppWidgetInfo> changedInfo) {
if (!changedInfo.isEmpty()) {
DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo,
mLauncher.getAppWidgetHost());
if (LauncherModel.getProviderInfo(getContext(),
changedInfo.get(0).providerName,
changedInfo.get(0).user) != null) {
// Re-inflate the widgets which have changed status
widgetRefresh.run();
} else {
// widgetRefresh will automatically run when the packages are updated.
// For now just update the progress bars
for (LauncherAppWidgetInfo info : changedInfo) {
if (info.hostView instanceof PendingAppWidgetHostView) {
info.installProgress = 100;
((PendingAppWidgetHostView) info.hostView).applyState();
}
}
}
}
}
private void moveToScreen(int page, boolean animate) {
if (!workspaceInModalState()) {
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();
}
}
exitWidgetResizeMode();
}
@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);
}
protected String getPageIndicatorDescription() {
String settings = getResources().getString(R.string.settings_button_text);
return getCurrentPageDescription() + ", " + settings;
}
protected String getCurrentPageDescription() {
if (hasCustomContent() && getNextPage() == 0) {
return mCustomContentDescription;
}
int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage;
return getPageDescription(page);
}
private String getPageDescription(int page) {
int delta = numCustomPages();
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);
}
@Override
public void fillInLaunchSourceData(Bundle sourceData) {
sourceData.putString(Stats.SOURCE_EXTRA_CONTAINER, Stats.CONTAINER_HOMESCREEN);
sourceData.putInt(Stats.SOURCE_EXTRA_CONTAINER_PAGE, getCurrentPage());
}
/**
* Used as a workaround to ensure that the AppWidgetService receives the
* PACKAGE_ADDED broadcast before updating widgets.
*/
private class DeferredWidgetRefresh implements Runnable {
private final ArrayList<LauncherAppWidgetInfo> mInfos;
private final LauncherAppWidgetHost mHost;
private final Handler mHandler;
private boolean mRefreshPending;
public DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos,
LauncherAppWidgetHost host) {
mInfos = infos;
mHost = host;
mHandler = new Handler();
mRefreshPending = true;
mHost.addProviderChangeListener(this);
// Force refresh after 10 seconds, if we don't get the provider changed event.
// This could happen when the provider is no longer available in the app.
mHandler.postDelayed(this, 10000);
}
@Override
public void run() {
mHost.removeProviderChangeListener(this);
mHandler.removeCallbacks(this);
if (!mRefreshPending) {
return;
}
mRefreshPending = false;
for (LauncherAppWidgetInfo info : mInfos) {
if (info.hostView instanceof PendingAppWidgetHostView) {
PendingAppWidgetHostView view = (PendingAppWidgetHostView) info.hostView;
mLauncher.removeAppWidget(info);
CellLayout cl = (CellLayout) view.getParent().getParent();
// Remove the current widget
cl.removeView(view);
mLauncher.bindAppWidget(info);
}
}
}
}
}