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gerrit-public.fairphone.software / platform / packages / apps / Launcher3 / fbba09bb1a67f44ba9537f0fc9988f696e899d42 / . / src / com / android / launcher2 / Workspace.java
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/*
* 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.launcher2;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.TimeInterpolator;
import android.animation.ValueAnimator;
import android.animation.Animator.AnimatorListener;
import android.animation.ValueAnimator.AnimatorUpdateListener;
import android.app.AlertDialog;
import android.app.WallpaperManager;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ClipData;
import android.content.ClipDescription;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Camera;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Region.Op;
import android.graphics.drawable.Drawable;
import android.os.IBinder;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Pair;
import android.view.Display;
import android.view.DragEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.DecelerateInterpolator;
import android.widget.TextView;
import android.widget.Toast;
import com.android.launcher.R;
import com.android.launcher2.FolderIcon.FolderRingAnimator;
import com.android.launcher2.InstallWidgetReceiver.WidgetMimeTypeHandlerData;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
/**
* The workspace is a wide area with a wallpaper and a finite number of pages.
* Each page contains a number of icons, folders or widgets the user can
* interact with. A workspace is meant to be used with a fixed width only.
*/
public class Workspace extends SmoothPagedView
implements DropTarget, DragSource, DragScroller, View.OnTouchListener,
DragController.DragListener {
@SuppressWarnings({"UnusedDeclaration"})
private static final String TAG = "Launcher.Workspace";
// Y rotation to apply to the workspace screens
private static final float WORKSPACE_ROTATION = 12.5f;
// These are extra scale factors to apply to the mini home screens
// so as to achieve the desired transform
private static final float EXTRA_SCALE_FACTOR_0 = 0.972f;
private static final float EXTRA_SCALE_FACTOR_1 = 1.0f;
private static final float EXTRA_SCALE_FACTOR_2 = 1.10f;
private static final int CHILDREN_OUTLINE_FADE_OUT_DELAY = 0;
private static final int CHILDREN_OUTLINE_FADE_OUT_DURATION = 375;
private static final int CHILDREN_OUTLINE_FADE_IN_DURATION = 100;
private static final int BACKGROUND_FADE_OUT_DURATION = 350;
private static final int BACKGROUND_FADE_IN_DURATION = 350;
// These animators are used to fade the children's outlines
private ObjectAnimator mChildrenOutlineFadeInAnimation;
private ObjectAnimator mChildrenOutlineFadeOutAnimation;
private float mChildrenOutlineAlpha = 0;
// These properties refer to the background protection gradient used for AllApps and Customize
private ValueAnimator mBackgroundFadeInAnimation;
private ValueAnimator mBackgroundFadeOutAnimation;
private Drawable mBackground;
boolean mDrawBackground = true;
private float mBackgroundAlpha = 0;
private float mOverScrollMaxBackgroundAlpha = 0.0f;
private int mOverScrollPageIndex = -1;
private final WallpaperManager mWallpaperManager;
private IBinder mWindowToken;
private int mDefaultPage;
/**
* CellInfo for the cell that is currently being dragged
*/
private CellLayout.CellInfo mDragInfo;
/**
* Target drop area calculated during last acceptDrop call.
*/
private int[] mTargetCell = new int[2];
/**
* The CellLayout that is currently being dragged over
*/
private CellLayout mDragTargetLayout = null;
private Launcher mLauncher;
private IconCache mIconCache;
private DragController mDragController;
// These are temporary variables to prevent having to allocate a new object just to
// return an (x, y) value from helper functions. Do NOT use them to maintain other state.
private int[] mTempCell = new int[2];
private int[] mTempEstimate = new int[2];
private float[] mDragViewVisualCenter = new float[2];
private float[] mTempDragCoordinates = new float[2];
private float[] mTempTouchCoordinates = new float[2];
private float[] mTempCellLayoutCenterCoordinates = new float[2];
private float[] mTempDragBottomRightCoordinates = new float[2];
private Matrix mTempInverseMatrix = new Matrix();
private SpringLoadedDragController mSpringLoadedDragController;
private float mSpringLoadedShrinkFactor;
private static final int DEFAULT_CELL_COUNT_X = 4;
private static final int DEFAULT_CELL_COUNT_Y = 4;
// State variable that indicates whether the pages are small (ie when you're
// in all apps or customize mode)
enum State { NORMAL, SPRING_LOADED, SMALL };
private State mState;
private boolean mIsSwitchingState = false;
private boolean mSwitchStateAfterFirstLayout = false;
private State mStateAfterFirstLayout;
private AnimatorSet mAnimator;
private AnimatorListener mShrinkAnimationListener;
private AnimatorListener mUnshrinkAnimationListener;
boolean mAnimatingViewIntoPlace = false;
boolean mIsDragOccuring = false;
boolean mChildrenLayersEnabled = true;
/** Is the user is dragging an item near the edge of a page? */
private boolean mInScrollArea = false;
private final HolographicOutlineHelper mOutlineHelper = new HolographicOutlineHelper();
private Bitmap mDragOutline = null;
private final Rect mTempRect = new Rect();
private final int[] mTempXY = new int[2];
// Paint used to draw external drop outline
private final Paint mExternalDragOutlinePaint = new Paint();
// Camera and Matrix used to determine the final position of a neighboring CellLayout
private final Matrix mMatrix = new Matrix();
private final Camera mCamera = new Camera();
private final float mTempFloat2[] = new float[2];
enum WallpaperVerticalOffset { TOP, MIDDLE, BOTTOM };
int mWallpaperWidth;
int mWallpaperHeight;
WallpaperOffsetInterpolator mWallpaperOffset;
boolean mUpdateWallpaperOffsetImmediately = false;
boolean mSyncWallpaperOffsetWithScroll = true;
private Runnable mDelayedResizeRunnable;
// Variables relating to the creation of user folders by hovering shortcuts over shortcuts
private static final int FOLDER_CREATION_TIMEOUT = 250;
private final Alarm mFolderCreationAlarm = new Alarm();
private FolderRingAnimator mDragFolderRingAnimator = null;
private View mLastDragOverView = null;
private boolean mCreateUserFolderOnDrop = false;
// 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;
/**
* Used to inflate the Workspace from XML.
*
* @param context The application's context.
* @param attrs The attributes set containing the Workspace's customization values.
*/
public Workspace(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
/**
* Used to inflate the Workspace from XML.
*
* @param context The application's context.
* @param attrs The attributes set containing the Workspace's customization values.
* @param defStyle Unused.
*/
public Workspace(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mContentIsRefreshable = false;
// With workspace, data is available straight from the get-go
setDataIsReady();
if (!LauncherApplication.isScreenLarge()) {
mFadeInAdjacentScreens = false;
}
mWallpaperManager = WallpaperManager.getInstance(context);
int cellCountX = DEFAULT_CELL_COUNT_X;
int cellCountY = DEFAULT_CELL_COUNT_Y;
TypedArray a = context.obtainStyledAttributes(attrs,
R.styleable.Workspace, defStyle, 0);
final Resources res = context.getResources();
if (LauncherApplication.isScreenLarge()) {
// Determine number of rows/columns dynamically
// TODO: This code currently fails on tablets with an aspect ratio < 1.3.
// Around that ratio we should make cells the same size in portrait and
// landscape
TypedArray actionBarSizeTypedArray =
context.obtainStyledAttributes(new int[] { android.R.attr.actionBarSize });
final float actionBarHeight = actionBarSizeTypedArray.getDimension(0, 0f);
final float systemBarHeight = res.getDimension(R.dimen.status_bar_height);
final float smallestScreenDim = res.getConfiguration().smallestScreenWidthDp;
cellCountX = 1;
while (CellLayout.widthInPortrait(res, cellCountX + 1) <= smallestScreenDim) {
cellCountX++;
}
cellCountY = 1;
while (actionBarHeight + CellLayout.heightInLandscape(res, cellCountY + 1)
<= smallestScreenDim - systemBarHeight) {
cellCountY++;
}
}
mSpringLoadedShrinkFactor =
res.getInteger(R.integer.config_workspaceSpringLoadShrinkPercentage) / 100.0f;
// if the value is manually specified, use that instead
cellCountX = a.getInt(R.styleable.Workspace_cellCountX, cellCountX);
cellCountY = a.getInt(R.styleable.Workspace_cellCountY, cellCountY);
mDefaultPage = a.getInt(R.styleable.Workspace_defaultScreen, 1);
a.recycle();
LauncherModel.updateWorkspaceLayoutCells(cellCountX, cellCountY);
setHapticFeedbackEnabled(false);
initWorkspace();
// Disable multitouch across the workspace/all apps/customize tray
setMotionEventSplittingEnabled(true);
}
public void onDragStart(DragSource source, Object info, int dragAction) {
mIsDragOccuring = true;
updateChildrenLayersEnabled();
mLauncher.lockScreenOrientation();
}
public void onDragEnd() {
mIsDragOccuring = false;
updateChildrenLayersEnabled();
mLauncher.unlockScreenOrientation();
}
/**
* Initializes various states for this workspace.
*/
protected void initWorkspace() {
Context context = getContext();
mCurrentPage = mDefaultPage;
Launcher.setScreen(mCurrentPage);
LauncherApplication app = (LauncherApplication)context.getApplicationContext();
mIconCache = app.getIconCache();
mExternalDragOutlinePaint.setAntiAlias(true);
setWillNotDraw(false);
try {
final Resources res = getResources();
mBackground = res.getDrawable(R.drawable.apps_customize_bg);
} catch (Resources.NotFoundException e) {
// In this case, we will skip drawing background protection
}
mUnshrinkAnimationListener = new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
mIsSwitchingState = true;
}
@Override
public void onAnimationEnd(Animator animation) {
mIsSwitchingState = false;
mSyncWallpaperOffsetWithScroll = true;
mWallpaperOffset.setOverrideHorizontalCatchupConstant(false);
mAnimator = null;
updateChildrenLayersEnabled();
}
};
mShrinkAnimationListener = new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
mIsSwitchingState = true;
}
@Override
public void onAnimationEnd(Animator animation) {
mIsSwitchingState = false;
mWallpaperOffset.setOverrideHorizontalCatchupConstant(false);
mAnimator = null;
}
};
mSnapVelocity = 600;
mWallpaperOffset = new WallpaperOffsetInterpolator();
}
@Override
protected int getScrollMode() {
return SmoothPagedView.X_LARGE_MODE;
}
private void onAddView(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.enableHardwareLayers();
}
@Override
public void addView(View child, int index, LayoutParams params) {
onAddView(child);
super.addView(child, index, params);
}
@Override
public void addView(View child) {
onAddView(child);
super.addView(child);
}
@Override
public void addView(View child, int index) {
onAddView(child);
super.addView(child, index);
}
@Override
public void addView(View child, int width, int height) {
onAddView(child);
super.addView(child, width, height);
}
@Override
public void addView(View child, LayoutParams params) {
onAddView(child);
super.addView(child, params);
}
/**
* @return The open folder on the current screen, or null if there is none
*/
Folder getOpenFolder() {
DragLayer dragLayer = mLauncher.getDragLayer();
int count = dragLayer.getChildCount();
for (int i = 0; i < count; i++) {
View child = dragLayer.getChildAt(i);
if (child instanceof Folder) {
Folder folder = (Folder) child;
if (folder.getInfo().opened)
return folder;
}
}
return null;
}
boolean isTouchActive() {
return mTouchState != TOUCH_STATE_REST;
}
/**
* 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 screen 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.
*/
void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) {
addInScreen(child, screen, x, y, spanX, spanY, false);
}
void addInFullScreen(View child, int screen) {
addInScreen(child, screen, 0, 0, -1, -1);
}
/**
* 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 screen 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.
*/
void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) {
if (screen < 0 || screen >= getChildCount()) {
Log.e(TAG, "The screen must be >= 0 and < " + getChildCount()
+ " (was " + screen + "); skipping child");
return;
}
final CellLayout group = (CellLayout) getChildAt(screen);
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
if (lp == null) {
lp = new CellLayout.LayoutParams(x, y, spanX, spanY);
} else {
lp.cellX = x;
lp.cellY = y;
lp.cellHSpan = spanX;
lp.cellVSpan = spanY;
}
if (spanX < 0 && spanY < 0) {
lp.isLockedToGrid = false;
}
// Get the canonical child id to uniquely represent this view in this screen
int childId = LauncherModel.getCellLayoutChildId(-1, screen, x, y, spanX, spanY);
boolean markCellsAsOccupied = !(child instanceof Folder);
if (!group.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?
Log.w(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout");
}
if (!(child instanceof Folder)) {
child.setHapticFeedbackEnabled(false);
child.setOnLongClickListener(mLongClickListener);
}
if (child instanceof DropTarget) {
mDragController.addDropTarget((DropTarget) child);
}
}
/**
* Check if the point (x, y) hits a given page.
*/
private boolean hitsPage(int index, float x, float y) {
final View page = getChildAt(index);
if (page != null) {
float[] localXY = { x, y };
mapPointFromSelfToChild(page, localXY);
return (localXY[0] >= 0 && localXY[0] < page.getWidth()
&& localXY[1] >= 0 && localXY[1] < page.getHeight());
}
return false;
}
@Override
protected boolean hitsPreviousPage(float x, float y) {
// mNextPage is set to INVALID_PAGE whenever we are stationary.
// Calculating "next page" this way ensures that you scroll to whatever page you tap on
final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage;
return hitsPage(current - 1, x, y);
}
@Override
protected boolean hitsNextPage(float x, float y) {
// mNextPage is set to INVALID_PAGE whenever we are stationary.
// Calculating "next page" this way ensures that you scroll to whatever page you tap on
final int current = (mNextPage == INVALID_PAGE) ? mCurrentPage : mNextPage;
return hitsPage(current + 1, x, y);
}
/**
* Called directly from a CellLayout (not by the framework), after we've been added as a
* listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout
* that it should intercept touch events, which is not something that is normally supported.
*/
@Override
public boolean onTouch(View v, MotionEvent event) {
return (isSmall() || mIsSwitchingState);
}
protected void onWindowVisibilityChanged (int visibility) {
mLauncher.onWindowVisibilityChanged(visibility);
}
@Override
public boolean dispatchUnhandledMove(View focused, int direction) {
if (isSmall() || mIsSwitchingState) {
// when the home screens are shrunken, shouldn't allow side-scrolling
return false;
}
return super.dispatchUnhandledMove(focused, direction);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
mXDown = ev.getX();
mYDown = ev.getY();
}
return super.onInterceptTouchEvent(ev);
}
@Override
protected void determineScrollingStart(MotionEvent ev) {
if (!isSmall() && !mIsSwitchingState) {
float deltaX = Math.abs(ev.getX() - mXDown);
float deltaY = Math.abs(ev.getY() - mYDown);
if (Float.compare(deltaX, 0f) == 0) return;
float slope = deltaY / deltaX;
float theta = (float) Math.atan(slope);
if (deltaX > mTouchSlop || deltaY > mTouchSlop) {
cancelCurrentPageLongPress();
}
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);
}
}
}
@Override
protected boolean isScrollingIndicatorEnabled() {
return mState != State.SPRING_LOADED;
}
protected void onPageBeginMoving() {
super.onPageBeginMoving();
if (isHardwareAccelerated()) {
updateChildrenLayersEnabled();
} else {
if (mNextPage != INVALID_PAGE) {
// we're snapping to a particular screen
enableChildrenCache(mCurrentPage, mNextPage);
} else {
// this is when user is actively dragging a particular screen, they might
// swipe it either left or right (but we won't advance by more than one screen)
enableChildrenCache(mCurrentPage - 1, mCurrentPage + 1);
}
}
// Only show page outlines as we pan if we are on large screen
if (LauncherApplication.isScreenLarge()) {
showOutlines();
}
}
protected void onPageEndMoving() {
super.onPageEndMoving();
if (isHardwareAccelerated()) {
updateChildrenLayersEnabled();
} else {
clearChildrenCache();
}
// Hide the outlines, as long as we're not dragging
if (!mDragController.dragging()) {
// Only hide page outlines as we pan if we are on large screen
if (LauncherApplication.isScreenLarge()) {
hideOutlines();
}
}
mOverScrollMaxBackgroundAlpha = 0.0f;
mOverScrollPageIndex = -1;
if (mDelayedResizeRunnable != null) {
mDelayedResizeRunnable.run();
mDelayedResizeRunnable = null;
}
}
@Override
protected void notifyPageSwitchListener() {
super.notifyPageSwitchListener();
Launcher.setScreen(mCurrentPage);
};
// As a ratio of screen height, the total distance we want the parallax effect to span
// vertically
private float wallpaperTravelToScreenHeightRatio(int width, int height) {
return 1.1f;
}
// As a ratio of screen height, the total distance we want the parallax effect to span
// horizontally
private float wallpaperTravelToScreenWidthRatio(int width, int height) {
float aspectRatio = width / (float) height;
// At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width
// At an aspect ratio of 10/16, the wallpaper parallax effect should span 1.2 * screen width
// We will use these two data points to extrapolate how much the wallpaper parallax effect
// to span (ie travel) at any aspect ratio:
final float ASPECT_RATIO_LANDSCAPE = 16/10f;
final float ASPECT_RATIO_PORTRAIT = 10/16f;
final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE = 1.5f;
final float WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT = 1.2f;
// To find out the desired width at different aspect ratios, we use the following two
// formulas, where the coefficient on x is the aspect ratio (width/height):
// (16/10)x + y = 1.5
// (10/16)x + y = 1.2
// We solve for x and y and end up with a final formula:
final float x =
(WALLPAPER_WIDTH_TO_SCREEN_RATIO_LANDSCAPE - WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT) /
(ASPECT_RATIO_LANDSCAPE - ASPECT_RATIO_PORTRAIT);
final float y = WALLPAPER_WIDTH_TO_SCREEN_RATIO_PORTRAIT - x * ASPECT_RATIO_PORTRAIT;
return x * aspectRatio + y;
}
// The range of scroll values for Workspace
private int getScrollRange() {
return getChildOffset(getChildCount() - 1) - getChildOffset(0);
}
protected void setWallpaperDimension() {
Display display = mLauncher.getWindowManager().getDefaultDisplay();
DisplayMetrics displayMetrics = new DisplayMetrics();
display.getRealMetrics(displayMetrics);
final int maxDim = Math.max(displayMetrics.widthPixels, displayMetrics.heightPixels);
final int minDim = Math.min(displayMetrics.widthPixels, displayMetrics.heightPixels);
// We need to ensure that there is enough extra space in the wallpaper for the intended
// parallax effects
mWallpaperWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim));
mWallpaperHeight = (int)(maxDim * wallpaperTravelToScreenHeightRatio(maxDim, minDim));
new Thread("setWallpaperDimension") {
public void run() {
mWallpaperManager.suggestDesiredDimensions(mWallpaperWidth, mWallpaperHeight);
}
}.start();
}
public void setVerticalWallpaperOffset(float offset) {
mWallpaperOffset.setFinalY(offset);
}
public float getVerticalWallpaperOffset() {
return mWallpaperOffset.getCurrY();
}
public void setHorizontalWallpaperOffset(float offset) {
mWallpaperOffset.setFinalX(offset);
}
public float getHorizontalWallpaperOffset() {
return mWallpaperOffset.getCurrX();
}
private float wallpaperOffsetForCurrentScroll() {
Display display = mLauncher.getWindowManager().getDefaultDisplay();
final boolean isStaticWallpaper = (mWallpaperManager.getWallpaperInfo() == null);
// The wallpaper travel width is how far, from left to right, the wallpaper will move
// at this orientation (for example, in portrait mode we don't move all the way to the
// edges of the wallpaper, or otherwise the parallax effect would be too strong)
int wallpaperTravelWidth = (int) (display.getWidth() *
wallpaperTravelToScreenWidthRatio(display.getWidth(), display.getHeight()));
if (!isStaticWallpaper) {
wallpaperTravelWidth = mWallpaperWidth;
}
// Set wallpaper offset steps (1 / (number of screens - 1))
// We have 3 vertical offset states (centered, and then top/bottom aligned
// for all apps/customize)
mWallpaperManager.setWallpaperOffsetSteps(1.0f / (getChildCount() - 1), 1.0f / (3 - 1));
int scrollRange = getScrollRange();
float scrollProgressOffset = 0;
// Account for overscroll: you only see the absolute edge of the wallpaper if
// you overscroll as far as you can in landscape mode. Only do this for static wallpapers
// because live wallpapers (and probably 3rd party wallpaper providers) rely on the offset
// being even intervals from 0 to 1 (eg [0, 0.25, 0.5, 0.75, 1])
if (isStaticWallpaper) {
int overscrollOffset = (int) (maxOverScroll() * display.getWidth());
scrollProgressOffset += overscrollOffset / (float) getScrollRange();
scrollRange += 2 * overscrollOffset;
}
float scrollProgress =
mScrollX / (float) scrollRange + scrollProgressOffset;
float offsetInDips = wallpaperTravelWidth * scrollProgress +
(mWallpaperWidth - wallpaperTravelWidth) / 2; // center it
float offset = offsetInDips / (float) mWallpaperWidth;
return offset;
}
private void syncWallpaperOffsetWithScroll() {
final boolean enableWallpaperEffects = isHardwareAccelerated();
if (enableWallpaperEffects) {
mWallpaperOffset.setFinalX(wallpaperOffsetForCurrentScroll());
}
}
public void updateWallpaperOffsetImmediately() {
mUpdateWallpaperOffsetImmediately = true;
}
private void updateWallpaperOffsets() {
boolean updateNow = false;
boolean keepUpdating = true;
if (mUpdateWallpaperOffsetImmediately) {
updateNow = true;
keepUpdating = false;
mWallpaperOffset.jumpToFinal();
mUpdateWallpaperOffsetImmediately = false;
} else {
updateNow = keepUpdating = mWallpaperOffset.computeScrollOffset();
}
if (updateNow) {
if (mWindowToken != null) {
mWallpaperManager.setWallpaperOffsets(mWindowToken,
mWallpaperOffset.getCurrX(), mWallpaperOffset.getCurrY());
}
}
if (keepUpdating) {
fastInvalidate();
}
}
class WallpaperOffsetInterpolator {
float mFinalHorizontalWallpaperOffset = 0.0f;
float mFinalVerticalWallpaperOffset = 0.5f;
float mHorizontalWallpaperOffset = 0.0f;
float mVerticalWallpaperOffset = 0.5f;
long mLastWallpaperOffsetUpdateTime;
boolean mIsMovingFast;
boolean mOverrideHorizontalCatchupConstant;
float mHorizontalCatchupConstant = 0.35f;
float mVerticalCatchupConstant = 0.35f;
public WallpaperOffsetInterpolator() {
}
public void setOverrideHorizontalCatchupConstant(boolean override) {
mOverrideHorizontalCatchupConstant = override;
}
public void setHorizontalCatchupConstant(float f) {
mHorizontalCatchupConstant = f;
}
public void setVerticalCatchupConstant(float f) {
mVerticalCatchupConstant = f;
}
public boolean computeScrollOffset() {
if (Float.compare(mHorizontalWallpaperOffset, mFinalHorizontalWallpaperOffset) == 0 &&
Float.compare(mVerticalWallpaperOffset, mFinalVerticalWallpaperOffset) == 0) {
mIsMovingFast = false;
return false;
}
Display display = mLauncher.getWindowManager().getDefaultDisplay();
boolean isLandscape = display.getWidth() > display.getHeight();
long currentTime = System.currentTimeMillis();
long timeSinceLastUpdate = currentTime - mLastWallpaperOffsetUpdateTime;
timeSinceLastUpdate = Math.min((long) (1000/30f), timeSinceLastUpdate);
timeSinceLastUpdate = Math.max(1L, timeSinceLastUpdate);
float xdiff = Math.abs(mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset);
if (!mIsMovingFast && xdiff > 0.07) {
mIsMovingFast = true;
}
float fractionToCatchUpIn1MsHorizontal;
if (mOverrideHorizontalCatchupConstant) {
fractionToCatchUpIn1MsHorizontal = mHorizontalCatchupConstant;
} else if (mIsMovingFast) {
fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.5f : 0.75f;
} else {
// slow
fractionToCatchUpIn1MsHorizontal = isLandscape ? 0.27f : 0.5f;
}
float fractionToCatchUpIn1MsVertical = mVerticalCatchupConstant;
fractionToCatchUpIn1MsHorizontal /= 33f;
fractionToCatchUpIn1MsVertical /= 33f;
final float UPDATE_THRESHOLD = 0.00001f;
float hOffsetDelta = mFinalHorizontalWallpaperOffset - mHorizontalWallpaperOffset;
float vOffsetDelta = mFinalVerticalWallpaperOffset - mVerticalWallpaperOffset;
boolean jumpToFinalValue = Math.abs(hOffsetDelta) < UPDATE_THRESHOLD &&
Math.abs(vOffsetDelta) < UPDATE_THRESHOLD;
if (jumpToFinalValue) {
mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset;
mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset;
} else {
float percentToCatchUpVertical =
Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsVertical);
float percentToCatchUpHorizontal =
Math.min(1.0f, timeSinceLastUpdate * fractionToCatchUpIn1MsHorizontal);
mHorizontalWallpaperOffset += percentToCatchUpHorizontal * hOffsetDelta;
mVerticalWallpaperOffset += percentToCatchUpVertical * vOffsetDelta;
}
mLastWallpaperOffsetUpdateTime = System.currentTimeMillis();
return true;
}
public float getCurrX() {
return mHorizontalWallpaperOffset;
}
public float getFinalX() {
return mFinalHorizontalWallpaperOffset;
}
public float getCurrY() {
return mVerticalWallpaperOffset;
}
public float getFinalY() {
return mFinalVerticalWallpaperOffset;
}
public void setFinalX(float x) {
mFinalHorizontalWallpaperOffset = Math.max(0f, Math.min(x, 1.0f));
}
public void setFinalY(float y) {
mFinalVerticalWallpaperOffset = Math.max(0f, Math.min(y, 1.0f));
}
public void jumpToFinal() {
mHorizontalWallpaperOffset = mFinalHorizontalWallpaperOffset;
mVerticalWallpaperOffset = mFinalVerticalWallpaperOffset;
}
}
@Override
public void computeScroll() {
super.computeScroll();
if (mSyncWallpaperOffsetWithScroll) {
syncWallpaperOffsetWithScroll();
}
}
void showOutlines() {
if (!isSmall() && !mIsSwitchingState) {
if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel();
if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel();
mChildrenOutlineFadeInAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 1.0f);
mChildrenOutlineFadeInAnimation.setDuration(CHILDREN_OUTLINE_FADE_IN_DURATION);
mChildrenOutlineFadeInAnimation.start();
}
}
void hideOutlines() {
if (!isSmall() && !mIsSwitchingState) {
if (mChildrenOutlineFadeInAnimation != null) mChildrenOutlineFadeInAnimation.cancel();
if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel();
mChildrenOutlineFadeOutAnimation = ObjectAnimator.ofFloat(this, "childrenOutlineAlpha", 0.0f);
mChildrenOutlineFadeOutAnimation.setDuration(CHILDREN_OUTLINE_FADE_OUT_DURATION);
mChildrenOutlineFadeOutAnimation.setStartDelay(CHILDREN_OUTLINE_FADE_OUT_DELAY);
mChildrenOutlineFadeOutAnimation.start();
}
}
public void showOutlinesTemporarily() {
if (!mIsPageMoving && !isTouchActive()) {
snapToPage(mCurrentPage);
}
}
public void setChildrenOutlineAlpha(float alpha) {
mChildrenOutlineAlpha = alpha;
for (int i = 0; i < getChildCount(); i++) {
CellLayout cl = (CellLayout) getChildAt(i);
cl.setBackgroundAlpha(alpha);
}
}
public float getChildrenOutlineAlpha() {
return mChildrenOutlineAlpha;
}
void disableBackground() {
mDrawBackground = false;
}
void enableBackground() {
mDrawBackground = true;
}
private void showBackgroundGradientForAllApps() {
showBackgroundGradient();
}
private void showBackgroundGradient() {
if (mBackground == null) return;
if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel();
if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel();
mBackgroundFadeInAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), 1f);
mBackgroundFadeInAnimation.addUpdateListener(new AnimatorUpdateListener() {
public void onAnimationUpdate(ValueAnimator animation) {
setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue());
}
});
mBackgroundFadeInAnimation.setInterpolator(new DecelerateInterpolator(1.5f));
mBackgroundFadeInAnimation.setDuration(BACKGROUND_FADE_IN_DURATION);
mBackgroundFadeInAnimation.start();
}
private void hideBackgroundGradient(float finalAlpha) {
if (mBackground == null) return;
if (mBackgroundFadeInAnimation != null) mBackgroundFadeInAnimation.cancel();
if (mBackgroundFadeOutAnimation != null) mBackgroundFadeOutAnimation.cancel();
mBackgroundFadeOutAnimation = ValueAnimator.ofFloat(getBackgroundAlpha(), finalAlpha);
mBackgroundFadeOutAnimation.addUpdateListener(new AnimatorUpdateListener() {
public void onAnimationUpdate(ValueAnimator animation) {
setBackgroundAlpha(((Float) animation.getAnimatedValue()).floatValue());
}
});
mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f));
mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION);
mBackgroundFadeOutAnimation.start();
}
public void setBackgroundAlpha(float alpha) {
if (alpha != mBackgroundAlpha) {
mBackgroundAlpha = alpha;
invalidate();
}
}
public float getBackgroundAlpha() {
return mBackgroundAlpha;
}
/**
* Due to 3D transformations, if two CellLayouts are theoretically touching each other,
* on the xy plane, when one is rotated along the y-axis, the gap between them is perceived
* as being larger. This method computes what offset the rotated view should be translated
* in order to minimize this perceived gap.
* @param degrees Angle of the view
* @param width Width of the view
* @param height Height of the view
* @return Offset to be used in a View.setTranslationX() call
*/
private float getOffsetXForRotation(float degrees, int width, int height) {
mMatrix.reset();
mCamera.save();
mCamera.rotateY(Math.abs(degrees));
mCamera.getMatrix(mMatrix);
mCamera.restore();
mMatrix.preTranslate(-width * 0.5f, -height * 0.5f);
mMatrix.postTranslate(width * 0.5f, height * 0.5f);
mTempFloat2[0] = width;
mTempFloat2[1] = height;
mMatrix.mapPoints(mTempFloat2);
return (width - mTempFloat2[0]) * (degrees > 0.0f ? 1.0f : -1.0f);
}
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);
}
}
float overScrollBackgroundAlphaInterpolator(float r) {
float threshold = 0.08f;
if (r > mOverScrollMaxBackgroundAlpha) {
mOverScrollMaxBackgroundAlpha = r;
} else if (r < mOverScrollMaxBackgroundAlpha) {
r = mOverScrollMaxBackgroundAlpha;
}
return Math.min(r / threshold, 1.0f);
}
@Override
protected void screenScrolled(int screenCenter) {
super.screenScrolled(screenCenter);
// If the screen is not xlarge, then don't rotate the CellLayouts
// NOTE: If we don't update the side pages alpha, then we should not hide the side pages.
// see unshrink().
if (!LauncherApplication.isScreenLarge()) return;
final int halfScreenSize = getMeasuredWidth() / 2;
for (int i = 0; i < getChildCount(); i++) {
CellLayout cl = (CellLayout) getChildAt(i);
if (cl != null) {
int totalDistance = getScaledMeasuredWidth(cl) + mPageSpacing;
int delta = screenCenter - (getChildOffset(i) -
getRelativeChildOffset(i) + halfScreenSize);
float scrollProgress = delta / (totalDistance * 1.0f);
scrollProgress = Math.min(scrollProgress, 1.0f);
scrollProgress = Math.max(scrollProgress, -1.0f);
// If the current page (i) is being overscrolled, we use a different
// set of rules for setting the background alpha multiplier.
if ((mScrollX < 0 && i == 0) || (mScrollX > mMaxScrollX &&
i == getChildCount() -1 )) {
cl.setBackgroundAlphaMultiplier(
overScrollBackgroundAlphaInterpolator(Math.abs(scrollProgress)));
mOverScrollPageIndex = i;
} else if (mOverScrollPageIndex != i) {
cl.setBackgroundAlphaMultiplier(
backgroundAlphaInterpolator(Math.abs(scrollProgress)));
}
float rotation = WORKSPACE_ROTATION * scrollProgress;
float translationX = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight());
cl.setTranslationX(translationX);
cl.setRotationY(rotation);
}
}
}
protected void onAttachedToWindow() {
super.onAttachedToWindow();
mWindowToken = getWindowToken();
computeScroll();
mDragController.setWindowToken(mWindowToken);
}
protected void onDetachedFromWindow() {
mWindowToken = null;
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) {
mUpdateWallpaperOffsetImmediately = true;
}
super.onLayout(changed, left, top, right, bottom);
// if shrinkToBottom() is called on initialization, it has to be deferred
// until after the first call to onLayout so that it has the correct width
if (mSwitchStateAfterFirstLayout) {
mSwitchStateAfterFirstLayout = false;
// shrink can trigger a synchronous onLayout call, so we
// post this to avoid a stack overflow / tangled onLayout calls
post(new Runnable() {
public void run() {
shrink(mStateAfterFirstLayout, false);
}
});
}
}
@Override
protected void onDraw(Canvas canvas) {
updateWallpaperOffsets();
// Draw the background gradient if necessary
if (mBackground != null && mBackgroundAlpha > 0.0f && mDrawBackground) {
int alpha = (int) (mBackgroundAlpha * 255);
mBackground.setAlpha(alpha);
mBackground.setBounds(mScrollX, 0, mScrollX + getMeasuredWidth(),
getMeasuredHeight());
mBackground.draw(canvas);
}
super.onDraw(canvas);
}
@Override
protected void dispatchDraw(Canvas canvas) {
super.dispatchDraw(canvas);
if (mInScrollArea && !LauncherApplication.isScreenLarge()) {
final int width = getWidth();
final int height = getHeight();
final int pageHeight = getChildAt(0).getHeight();
// This determines the height of the glowing edge: 90% of the page height
final int padding = (int) ((height - pageHeight) * 0.5f + pageHeight * 0.1f);
final CellLayout leftPage = (CellLayout) getChildAt(mCurrentPage - 1);
final CellLayout rightPage = (CellLayout) getChildAt(mCurrentPage + 1);
if (leftPage != null && leftPage.getIsDragOverlapping()) {
final Drawable d = getResources().getDrawable(R.drawable.page_hover_left_holo);
d.setBounds(mScrollX, padding, mScrollX + d.getIntrinsicWidth(), height - padding);
d.draw(canvas);
} else if (rightPage != null && rightPage.getIsDragOverlapping()) {
final Drawable d = getResources().getDrawable(R.drawable.page_hover_right_holo);
d.setBounds(mScrollX + width - d.getIntrinsicWidth(), padding, mScrollX + width, height - padding);
d.draw(canvas);
}
}
}
@Override
protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) {
if (!mLauncher.isAllAppsVisible()) {
final Folder openFolder = getOpenFolder();
if (openFolder != null) {
return openFolder.requestFocus(direction, previouslyFocusedRect);
} else {
return super.onRequestFocusInDescendants(direction, previouslyFocusedRect);
}
}
return false;
}
@Override
public int getDescendantFocusability() {
if (isSmall()) {
return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
}
return super.getDescendantFocusability();
}
@Override
public void addFocusables(ArrayList<View> views, int direction, int focusableMode) {
if (!mLauncher.isAllAppsVisible()) {
final Folder openFolder = getOpenFolder();
if (openFolder != null) {
openFolder.addFocusables(views, direction);
} else {
super.addFocusables(views, direction, focusableMode);
}
}
}
public boolean isSmall() {
return mState == State.SMALL || mState == State.SPRING_LOADED;
}
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);
}
}
private boolean childLayersEnabled() {
boolean isSmallOrSpringloaded =
isSmall() || mIsSwitchingState || mState == State.SPRING_LOADED;
return isSmallOrSpringloaded || isPageMoving() || mIsDragOccuring;
}
private void updateChildrenLayersEnabled() {
boolean small =
isSmall() || mIsSwitchingState || mState == State.SPRING_LOADED;
boolean dragging = mAnimatingViewIntoPlace || mIsDragOccuring;
boolean enableChildrenLayers = small || dragging || isPageMoving();
if (enableChildrenLayers != mChildrenLayersEnabled) {
mChildrenLayersEnabled = enableChildrenLayers;
for (int i = 0; i < getPageCount(); i++) {
((ViewGroup)getChildAt(i)).setChildrenLayersEnabled(enableChildrenLayers);
}
}
}
@Override
protected void onWallpaperTap(MotionEvent ev) {
final int[] position = mTempCell;
getLocationOnScreen(position);
int pointerIndex = ev.getActionIndex();
position[0] += (int) ev.getX(pointerIndex);
position[1] += (int) ev.getY(pointerIndex);
mWallpaperManager.sendWallpaperCommand(getWindowToken(),
ev.getAction() == MotionEvent.ACTION_UP
? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP,
position[0], position[1], 0, null);
}
private float getYScaleForScreen(int screen) {
int x = Math.abs(screen - 2);
// TODO: This should be generalized for use with arbitrary rotation angles.
switch(x) {
case 0: return EXTRA_SCALE_FACTOR_0;
case 1: return EXTRA_SCALE_FACTOR_1;
case 2: return EXTRA_SCALE_FACTOR_2;
}
return 1.0f;
}
public void shrink(State shrinkState) {
shrink(shrinkState, true);
}
// we use this to shrink the workspace for the all apps view and the customize view
public void shrink(State shrinkState, boolean animated) {
if (mFirstLayout) {
// (mFirstLayout == "first layout has not happened yet")
// if we get a call to shrink() as part of our initialization (for example, if
// Launcher is started in All Apps mode) then we need to wait for a layout call
// to get our width so we can layout the mini-screen views correctly
mSwitchStateAfterFirstLayout = true;
mStateAfterFirstLayout = shrinkState;
return;
}
// Stop any scrolling, move to the current page right away
setCurrentPage((mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage);
CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage);
if (currentPage == null) {
Log.w(TAG, "currentPage is NULL! mCurrentPage " + mCurrentPage
+ " mNextPage " + mNextPage);
return;
}
if (currentPage.getBackgroundAlphaMultiplier() < 1.0f) {
currentPage.setBackgroundAlpha(0.0f);
}
currentPage.setBackgroundAlphaMultiplier(1.0f);
mState = shrinkState;
updateChildrenLayersEnabled();
// we intercept and reject all touch events when we're small, so be sure to reset the state
mTouchState = TOUCH_STATE_REST;
mActivePointerId = INVALID_POINTER;
final Resources res = getResources();
final int screenWidth = getWidth();
final int screenHeight = getHeight();
// How much the workspace shrinks when we enter all apps or customization mode
final float shrinkFactor = res.getInteger(R.integer.config_workspaceShrinkPercent) / 100.0f;
// Making the assumption that all pages have the same width as the 0th
final int pageWidth = getChildAt(0).getMeasuredWidth();
final int pageHeight = getChildAt(0).getMeasuredHeight();
final int scaledPageWidth = (int) (shrinkFactor * pageWidth);
final int scaledPageHeight = (int) (shrinkFactor * pageHeight);
final float extraScaledSpacing = res.getDimension(R.dimen.smallScreenExtraSpacing);
final int screenCount = getChildCount();
float totalWidth = screenCount * scaledPageWidth + (screenCount - 1) * extraScaledSpacing;
boolean isPortrait = getMeasuredHeight() > getMeasuredWidth();
float y = (isPortrait ?
getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginPortrait) :
getResources().getDimension(R.dimen.allAppsSmallScreenVerticalMarginLandscape));
float finalAlpha = 1.0f;
float extraShrinkFactor = 1.0f;
// We shrink and disappear to nothing
y = screenHeight - y - scaledPageHeight;
finalAlpha = 0.0f;
int duration = res.getInteger(R.integer.config_appsCustomizeWorkspaceShrinkTime);
// We animate all the screens to the centered position in workspace
// At the same time, the screens become greyed/dimmed
// newX is initialized to the left-most position of the centered screens
float x = mScroller.getFinalX() + screenWidth / 2 - totalWidth / 2;
// We are going to scale about the center of the view, so we need to adjust the positions
// of the views accordingly
x -= (pageWidth - scaledPageWidth) / 2.0f;
y -= (pageHeight - scaledPageHeight) / 2.0f;
if (mAnimator != null) {
mAnimator.cancel();
}
mAnimator = new AnimatorSet();
final int childCount = getChildCount();
final float[] oldXs = new float[childCount];
final float[] oldYs = new float[childCount];
final float[] oldScaleXs = new float[childCount];
final float[] oldScaleYs = new float[childCount];
final float[] oldBackgroundAlphas = new float[childCount];
final float[] oldAlphas = new float[childCount];
final float[] oldRotationYs = new float[childCount];
final float[] newXs = new float[childCount];
final float[] newYs = new float[childCount];
final float[] newScaleXs = new float[childCount];
final float[] newScaleYs = new float[childCount];
final float[] newBackgroundAlphas = new float[childCount];
final float[] newAlphas = new float[childCount];
final float[] newRotationYs = new float[childCount];
for (int i = 0; i < screenCount; i++) {
final CellLayout cl = (CellLayout) getChildAt(i);
float rotation = (-i + 2) * WORKSPACE_ROTATION;
float rotationScaleX = (float) (1.0f / Math.cos(Math.PI * rotation / 180.0f));
float rotationScaleY = getYScaleForScreen(i);
oldAlphas[i] = cl.getAlpha();
newAlphas[i] = finalAlpha;
if (animated && (oldAlphas[i] != 0f || newAlphas[i] != 0f)) {
// if the CellLayout will be visible during the animation, force building its
// hardware layer immediately so we don't see a blip later in the animation
cl.buildChildrenLayer();
}
if (animated) {
oldXs[i] = cl.getX();
oldYs[i] = cl.getY();
oldScaleXs[i] = cl.getScaleX();
oldScaleYs[i] = cl.getScaleY();
oldBackgroundAlphas[i] = cl.getBackgroundAlpha();
oldRotationYs[i] = cl.getRotationY();
newXs[i] = x;
newYs[i] = y;
newScaleXs[i] = shrinkFactor * rotationScaleX * extraShrinkFactor;
newScaleYs[i] = shrinkFactor * rotationScaleY * extraShrinkFactor;
newBackgroundAlphas[i] = finalAlpha;
newRotationYs[i] = rotation;
} else {
cl.setX((int)x);
cl.setY((int)y);
cl.setScaleX(shrinkFactor * rotationScaleX * extraShrinkFactor);
cl.setScaleY(shrinkFactor * rotationScaleY * extraShrinkFactor);
cl.setBackgroundAlpha(finalAlpha);
cl.setAlpha(finalAlpha);
cl.setRotationY(rotation);
mShrinkAnimationListener.onAnimationEnd(null);
}
// increment newX for the next screen
x += scaledPageWidth + extraScaledSpacing;
}
float wallpaperOffset = 0.5f;
Display display = mLauncher.getWindowManager().getDefaultDisplay();
int wallpaperTravelHeight = (int) (display.getHeight() *
wallpaperTravelToScreenHeightRatio(display.getWidth(), display.getHeight()));
float offsetFromCenter = (wallpaperTravelHeight / (float) mWallpaperHeight) / 2f;
boolean isLandscape = display.getWidth() > display.getHeight();
// on phones, don't scroll the wallpaper horizontally or vertically when switching
// to/from all apps
final boolean enableWallpaperEffects =
isHardwareAccelerated() && LauncherApplication.isScreenLarge();
if (enableWallpaperEffects) {
switch (shrinkState) {
// animating in
case SPRING_LOADED:
wallpaperOffset = 0.5f;
mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f);
break;
case SMALL:
// allapps
wallpaperOffset = 0.5f - offsetFromCenter;
mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.34f : 0.32f);
break;
}
}
setLayoutScale(1.0f);
if (animated) {
if (enableWallpaperEffects) {
mWallpaperOffset.setHorizontalCatchupConstant(0.46f);
mWallpaperOffset.setOverrideHorizontalCatchupConstant(true);
}
mSyncWallpaperOffsetWithScroll = false;
ValueAnimator animWithInterpolator =
ValueAnimator.ofFloat(0f, 1f).setDuration(duration);
animWithInterpolator.setInterpolator(mZoomOutInterpolator);
final float oldHorizontalWallpaperOffset = getHorizontalWallpaperOffset();
final float oldVerticalWallpaperOffset = getVerticalWallpaperOffset();
final float newHorizontalWallpaperOffset = 0.5f;
final float newVerticalWallpaperOffset = wallpaperOffset;
animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() {
public void onAnimationUpdate(float a, float b) {
if (b == 0f) {
// an optimization, and required for correct behavior.
return;
}
invalidate();
if (enableWallpaperEffects) {
setHorizontalWallpaperOffset(
a * oldHorizontalWallpaperOffset + b * newHorizontalWallpaperOffset);
setVerticalWallpaperOffset(
a * oldVerticalWallpaperOffset + b * newVerticalWallpaperOffset);
}
for (int i = 0; i < screenCount; i++) {
final CellLayout cl = (CellLayout) getChildAt(i);
cl.fastInvalidate();
cl.setFastX(a * oldXs[i] + b * newXs[i]);
cl.setFastY(a * oldYs[i] + b * newYs[i]);
cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]);
cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]);
cl.setFastBackgroundAlpha(
a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]);
cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]);
cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]);
}
}
});
mAnimator.playTogether(animWithInterpolator);
mAnimator.addListener(mShrinkAnimationListener);
mAnimator.start();
} else if (enableWallpaperEffects) {
setVerticalWallpaperOffset(wallpaperOffset);
setHorizontalWallpaperOffset(0.5f);
updateWallpaperOffsetImmediately();
}
setChildrenDrawnWithCacheEnabled(true);
showBackgroundGradientForAllApps();
}
/*
* This interpolator emulates the rate at which the perceived scale of an object changes
* as its distance from a camera increases. When this interpolator is applied to a scale
* animation on a view, it evokes the sense that the object is shrinking due to moving away
* from the camera.
*/
static class ZInterpolator implements TimeInterpolator {
private float focalLength;
public ZInterpolator(float foc) {
focalLength = foc;
}
public float getInterpolation(float input) {
return (1.0f - focalLength / (focalLength + input)) /
(1.0f - focalLength / (focalLength + 1.0f));
}
}
/*
* The exact reverse of ZInterpolator.
*/
static class InverseZInterpolator implements TimeInterpolator {
private ZInterpolator zInterpolator;
public InverseZInterpolator(float foc) {
zInterpolator = new ZInterpolator(foc);
}
public float getInterpolation(float input) {
return 1 - zInterpolator.getInterpolation(1 - input);
}
}
/*
* ZInterpolator compounded with an ease-out.
*/
static class ZoomOutInterpolator implements TimeInterpolator {
private final ZInterpolator zInterpolator = new ZInterpolator(0.2f);
private final DecelerateInterpolator decelerate = new DecelerateInterpolator(1.8f);
public float getInterpolation(float input) {
return decelerate.getInterpolation(zInterpolator.getInterpolation(input));
}
}
/*
* InvereZInterpolator compounded with an ease-out.
*/
static class ZoomInInterpolator implements TimeInterpolator {
private final InverseZInterpolator inverseZInterpolator = new InverseZInterpolator(0.35f);
private final DecelerateInterpolator decelerate = new DecelerateInterpolator(3.0f);
public float getInterpolation(float input) {
return decelerate.getInterpolation(inverseZInterpolator.getInterpolation(input));
}
}
private final ZoomOutInterpolator mZoomOutInterpolator = new ZoomOutInterpolator();
private final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator();
/*
*
* We call these methods (onDragStartedWithItemSpans/onDragStartedWithSize) whenever we
* start a drag in Launcher, regardless of whether the drag has ever entered the Workspace
*
* These methods mark the appropriate pages as accepting drops (which alters their visual
* appearance).
*
*/
public void onDragStartedWithItem(View v) {
final Canvas canvas = new Canvas();
// We need to add extra padding to the bitmap to make room for the glow effect
final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
// The outline is used to visualize where the item will land if dropped
mDragOutline = createDragOutline(v, canvas, bitmapPadding);
}
public void onDragStartedWithItemSpans(int spanX, int spanY, Bitmap b) {
final Canvas canvas = new Canvas();
// We need to add extra padding to the bitmap to make room for the glow effect
final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
CellLayout cl = (CellLayout) getChildAt(0);
int[] size = cl.cellSpansToSize(spanX, spanY);
// The outline is used to visualize where the item will land if dropped
mDragOutline = createDragOutline(b, canvas, bitmapPadding, size[0], size[1]);
}
// we call this method whenever a drag and drop in Launcher finishes, even if Workspace was
// never dragged over
public void onDragStopped(boolean success) {
// In the success case, DragController has already called onDragExit()
if (!success) {
doDragExit(null);
}
}
// We call this when we trigger an unshrink by clicking on the CellLayout cl
public void unshrink(CellLayout clThatWasClicked) {
unshrink(clThatWasClicked, false);
}
public void unshrink(CellLayout clThatWasClicked, boolean springLoaded) {
int newCurrentPage = indexOfChild(clThatWasClicked);
if (isSmall()) {
if (springLoaded) {
setLayoutScale(mSpringLoadedShrinkFactor);
}
scrollToNewPageWithoutMovingPages(newCurrentPage);
unshrink(true, springLoaded);
}
}
public void enterSpringLoadedDragMode(CellLayout clThatWasClicked) {
unshrink(clThatWasClicked, true);
}
public void exitSpringLoadedDragMode(State shrinkState) {
shrink(shrinkState);
}
public void exitWidgetResizeMode() {
DragLayer dragLayer = mLauncher.getDragLayer();
dragLayer.clearAllResizeFrames();
}
void unshrink(boolean animated) {
unshrink(animated, false);
}
void unshrink(boolean animated, boolean springLoaded) {
if (isSmall()) {
float finalScaleFactor = 1.0f;
float finalBackgroundAlpha = 0.0f;
if (springLoaded) {
finalScaleFactor = mSpringLoadedShrinkFactor;
finalBackgroundAlpha = 1.0f;
mState = State.SPRING_LOADED;
} else {
mState = State.NORMAL;
}
if (mAnimator != null) {
mAnimator.cancel();
}
mAnimator = new AnimatorSet();
final int screenCount = getChildCount();
final int duration = getResources().getInteger(R.integer.config_workspaceUnshrinkTime);
final float[] oldTranslationXs = new float[getChildCount()];
final float[] oldTranslationYs = new float[getChildCount()];
final float[] oldScaleXs = new float[getChildCount()];
final float[] oldScaleYs = new float[getChildCount()];
final float[] oldBackgroundAlphas = new float[getChildCount()];
final float[] oldBackgroundAlphaMultipliers = new float[getChildCount()];
final float[] oldAlphas = new float[getChildCount()];
final float[] oldRotationYs = new float[getChildCount()];
final float[] newTranslationXs = new float[getChildCount()];
final float[] newTranslationYs = new float[getChildCount()];
final float[] newScaleXs = new float[getChildCount()];
final float[] newScaleYs = new float[getChildCount()];
final float[] newBackgroundAlphas = new float[getChildCount()];
final float[] newBackgroundAlphaMultipliers = new float[getChildCount()];
final float[] newAlphas = new float[getChildCount()];
final float[] newRotationYs = new float[getChildCount()];
for (int i = 0; i < screenCount; i++) {
final CellLayout cl = (CellLayout)getChildAt(i);
float finalAlphaValue = 0f;
float rotation = 0f;
if (LauncherApplication.isScreenLarge()) {
finalAlphaValue = (i == mCurrentPage) ? 1.0f : 0.0f;
if (i < mCurrentPage) {
rotation = WORKSPACE_ROTATION;
} else if (i > mCurrentPage) {
rotation = -WORKSPACE_ROTATION;
}
} else {
// Don't hide the side panes on the phone if we don't also update the side pages
// alpha. See screenScrolled().
finalAlphaValue = 1f;
}
float finalAlphaMultiplierValue = 1f;
float translation = 0f;
// If the screen is not xlarge, then don't rotate the CellLayouts
// NOTE: If we don't update the side pages alpha, then we should not hide the side
// pages. see unshrink().
if (LauncherApplication.isScreenLarge()) {
translation = getOffsetXForRotation(rotation, cl.getWidth(), cl.getHeight());
}
oldAlphas[i] = cl.getAlpha();
newAlphas[i] = finalAlphaValue;
if (animated) {
oldTranslationXs[i] = cl.getTranslationX();
oldTranslationYs[i] = cl.getTranslationY();
oldScaleXs[i] = cl.getScaleX();
oldScaleYs[i] = cl.getScaleY();
oldBackgroundAlphas[i] = cl.getBackgroundAlpha();
oldBackgroundAlphaMultipliers[i] = cl.getBackgroundAlphaMultiplier();
oldRotationYs[i] = cl.getRotationY();
newTranslationXs[i] = translation;
newTranslationYs[i] = 0f;
newScaleXs[i] = finalScaleFactor;
newScaleYs[i] = finalScaleFactor;
newBackgroundAlphas[i] = finalBackgroundAlpha;
newBackgroundAlphaMultipliers[i] = finalAlphaMultiplierValue;
newRotationYs[i] = rotation;
} else {
cl.setTranslationX(translation);
cl.setTranslationY(0.0f);
cl.setScaleX(finalScaleFactor);
cl.setScaleY(finalScaleFactor);
cl.setBackgroundAlpha(0.0f);
cl.setBackgroundAlphaMultiplier(finalAlphaMultiplierValue);
cl.setAlpha(finalAlphaValue);
cl.setRotationY(rotation);
mUnshrinkAnimationListener.onAnimationEnd(null);
}
}
Display display = mLauncher.getWindowManager().getDefaultDisplay();
boolean isLandscape = display.getWidth() > display.getHeight();
// on phones, don't scroll the wallpaper horizontally or vertically when switching
// to/from all apps
final boolean enableWallpaperEffects =
isHardwareAccelerated() && LauncherApplication.isScreenLarge();
if (enableWallpaperEffects) {
switch (mState) {
// animating out
case SPRING_LOADED:
if (animated) {
mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.49f : 0.46f);
mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.49f : 0.46f);
mWallpaperOffset.setOverrideHorizontalCatchupConstant(true);
}
break;
case SMALL:
// all apps
if (animated) {
mWallpaperOffset.setHorizontalCatchupConstant(isLandscape ? 0.65f : 0.65f);
mWallpaperOffset.setVerticalCatchupConstant(isLandscape ? 0.65f : 0.65f);
mWallpaperOffset.setOverrideHorizontalCatchupConstant(true);
}
break;
}
}
if (animated) {
ValueAnimator animWithInterpolator =
ValueAnimator.ofFloat(0f, 1f).setDuration(duration);
animWithInterpolator.setInterpolator(mZoomInInterpolator);
final float oldHorizontalWallpaperOffset = enableWallpaperEffects ?
getHorizontalWallpaperOffset() : 0;
final float oldVerticalWallpaperOffset = enableWallpaperEffects ?
getVerticalWallpaperOffset() : 0;
final float newHorizontalWallpaperOffset = enableWallpaperEffects ?
wallpaperOffsetForCurrentScroll() : 0;
final float newVerticalWallpaperOffset = enableWallpaperEffects ? 0.5f : 0;
animWithInterpolator.addUpdateListener(new LauncherAnimatorUpdateListener() {
public void onAnimationUpdate(float a, float b) {
if (b == 0f) {
// an optimization, but not required
return;
}
invalidate();
if (enableWallpaperEffects) {
setHorizontalWallpaperOffset(a * oldHorizontalWallpaperOffset
+ b * newHorizontalWallpaperOffset);
setVerticalWallpaperOffset(a * oldVerticalWallpaperOffset
+ b * newVerticalWallpaperOffset);
}
for (int i = 0; i < screenCount; i++) {
final CellLayout cl = (CellLayout) getChildAt(i);
cl.fastInvalidate();
cl.setFastTranslationX(
a * oldTranslationXs[i] + b * newTranslationXs[i]);
cl.setFastTranslationY(
a * oldTranslationYs[i] + b * newTranslationYs[i]);
cl.setFastScaleX(a * oldScaleXs[i] + b * newScaleXs[i]);
cl.setFastScaleY(a * oldScaleYs[i] + b * newScaleYs[i]);
cl.setFastBackgroundAlpha(
a * oldBackgroundAlphas[i] + b * newBackgroundAlphas[i]);
cl.setBackgroundAlphaMultiplier(a * oldBackgroundAlphaMultipliers[i] +
b * newBackgroundAlphaMultipliers[i]);
cl.setFastAlpha(a * oldAlphas[i] + b * newAlphas[i]);
}
}
});
ValueAnimator rotationAnim =
ValueAnimator.ofFloat(0f, 1f).setDuration(duration);
rotationAnim.setInterpolator(new DecelerateInterpolator(2.0f));
rotationAnim.addUpdateListener(new LauncherAnimatorUpdateListener() {
public void onAnimationUpdate(float a, float b) {
// don't invalidate workspace because we did it above
if (b == 0f) {
// an optimization, but not required
return;
}
for (int i = 0; i < screenCount; i++) {
final CellLayout cl = (CellLayout) getChildAt(i);
cl.setFastRotationY(a * oldRotationYs[i] + b * newRotationYs[i]);
}
}
});
mAnimator.playTogether(animWithInterpolator, rotationAnim);
// If we call this when we're not animated, onAnimationEnd is never called on
// the listener; make sure we only use the listener when we're actually animating
mAnimator.addListener(mUnshrinkAnimationListener);
mAnimator.start();
} else {
if (enableWallpaperEffects) {
setHorizontalWallpaperOffset(wallpaperOffsetForCurrentScroll());
setVerticalWallpaperOffset(0.5f);
updateWallpaperOffsetImmediately();
}
}
}
hideBackgroundGradient(springLoaded ? getResources().getInteger(
R.integer.config_appsCustomizeSpringLoadedBgAlpha) / 100f : 0f);
}
/**
* Draw the View v into the given Canvas.
*
* @param v the view to draw
* @param destCanvas the canvas to draw on
* @param padding the horizontal and vertical padding to use when drawing
*/
private void drawDragView(View v, Canvas destCanvas, int padding, boolean pruneToDrawable) {
final Rect clipRect = mTempRect;
v.getDrawingRect(clipRect);
destCanvas.save();
if (v instanceof TextView && pruneToDrawable) {
Drawable d = ((TextView) v).getCompoundDrawables()[1];
clipRect.set(0, 0, d.getIntrinsicWidth() + padding, d.getIntrinsicHeight() + padding);
destCanvas.translate(padding / 2, padding / 2);
d.draw(destCanvas);
} else {
if (v instanceof FolderIcon) {
clipRect.bottom = getResources().getDimensionPixelSize(R.dimen.folder_preview_size);
} else if (v instanceof BubbleTextView) {
final BubbleTextView tv = (BubbleTextView) v;
clipRect.bottom = tv.getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V +
tv.getLayout().getLineTop(0);
} else if (v instanceof TextView) {
final TextView tv = (TextView) v;
clipRect.bottom = tv.getExtendedPaddingTop() - tv.getCompoundDrawablePadding() +
tv.getLayout().getLineTop(0);
}
destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2);
destCanvas.clipRect(clipRect, Op.REPLACE);
v.draw(destCanvas);
}
destCanvas.restore();
}
/**
* Returns a new bitmap to show when the given View is being dragged around.
* Responsibility for the bitmap is transferred to the caller.
*/
public Bitmap createDragBitmap(View v, Canvas canvas, int padding) {
final int outlineColor = getResources().getColor(R.color.drag_outline_color);
Bitmap b;
if (v instanceof TextView) {
Drawable d = ((TextView) v).getCompoundDrawables()[1];
b = Bitmap.createBitmap(d.getIntrinsicWidth() + padding,
d.getIntrinsicHeight() + padding, Bitmap.Config.ARGB_8888);
} else {
b = Bitmap.createBitmap(
v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888);
}
canvas.setBitmap(b);
drawDragView(v, canvas, padding, true);
mOutlineHelper.applyOuterBlur(b, canvas, outlineColor);
return b;
}
/**
* Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location.
* Responsibility for the bitmap is transferred to the caller.
*/
private Bitmap createDragOutline(View v, Canvas canvas, int padding) {
final int outlineColor = getResources().getColor(R.color.drag_outline_color);
final Bitmap b = Bitmap.createBitmap(
v.getWidth() + padding, v.getHeight() + padding, Bitmap.Config.ARGB_8888);
canvas.setBitmap(b);
drawDragView(v, canvas, padding, false);
mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor);
return b;
}
/**
* Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location.
* Responsibility for the bitmap is transferred to the caller.
*/
private Bitmap createDragOutline(Bitmap orig, Canvas canvas, int padding, int w, int h) {
final int outlineColor = getResources().getColor(R.color.drag_outline_color);
final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
canvas.setBitmap(b);
Rect src = new Rect(0, 0, orig.getWidth(), orig.getHeight());
float scaleFactor = Math.min((w - padding) / (float) orig.getWidth(),
(h - padding) / (float) orig.getHeight());
int scaledWidth = (int) (scaleFactor * orig.getWidth());
int scaledHeight = (int) (scaleFactor * orig.getHeight());
Rect dst = new Rect(0, 0, scaledWidth, scaledHeight);
// center the image
dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2);
Paint p = new Paint();
p.setFilterBitmap(true);
canvas.drawBitmap(orig, src, dst, p);
mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor);
return b;
}
/**
* Creates a drag outline to represent a drop (that we don't have the actual information for
* yet). May be changed in the future to alter the drop outline slightly depending on the
* clip description mime data.
*/
private Bitmap createExternalDragOutline(Canvas canvas, int padding) {
Resources r = getResources();
final int outlineColor = r.getColor(R.color.drag_outline_color);
final int iconWidth = r.getDimensionPixelSize(R.dimen.workspace_cell_width);
final int iconHeight = r.getDimensionPixelSize(R.dimen.workspace_cell_height);
final int rectRadius = r.getDimensionPixelSize(R.dimen.external_drop_icon_rect_radius);
final int inset = (int) (Math.min(iconWidth, iconHeight) * 0.2f);
final Bitmap b = Bitmap.createBitmap(
iconWidth + padding, iconHeight + padding, Bitmap.Config.ARGB_8888);
canvas.setBitmap(b);
canvas.drawRoundRect(new RectF(inset, inset, iconWidth - inset, iconHeight - inset),
rectRadius, rectRadius, mExternalDragOutlinePaint);
mOutlineHelper.applyMediumExpensiveOutlineWithBlur(b, canvas, outlineColor, outlineColor);
return b;
}
void startDrag(CellLayout.CellInfo cellInfo) {
View child = cellInfo.cell;
// Make sure the drag was started by a long press as opposed to a long click.
if (!child.isInTouchMode()) {
return;
}
mDragInfo = cellInfo;
CellLayout current = (CellLayout) getChildAt(cellInfo.screen);
current.onDragChild(child);
child.clearFocus();
child.setPressed(false);
final Canvas canvas = new Canvas();
// We need to add extra padding to the bitmap to make room for the glow effect
final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
// The outline is used to visualize where the item will land if dropped
mDragOutline = createDragOutline(child, canvas, bitmapPadding);
beginDragShared(child, this);
}
public void beginDragShared(View child, DragSource source) {
// We need to add extra padding to the bitmap to make room for the glow effect
final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
// The drag bitmap follows the touch point around on the screen
final Bitmap b = createDragBitmap(child, new Canvas(), bitmapPadding);
final int bmpWidth = b.getWidth();
final int bmpHeight = b.getHeight();
mLauncher.getDragLayer().getLocationInDragLayer(child, mTempXY);
final int dragLayerX = (int) mTempXY[0] + (child.getWidth() - bmpWidth) / 2;
int dragLayerY = (int) mTempXY[1] + (child.getHeight() - bmpHeight) / 2;
dragLayerY -= (child.getHeight() - b.getHeight()) / 2;
Rect dragRect = null;
if (child instanceof BubbleTextView) {
int iconSize = getResources().getDimensionPixelSize(R.dimen.app_icon_size);
int top = child.getPaddingTop();
int left = (bmpWidth - iconSize) / 2;
int right = left + iconSize;
int bottom = top + iconSize;
dragRect = new Rect(left, top, right, bottom);
} else if (child instanceof FolderIcon) {
int previewSize = getResources().getDimensionPixelSize(R.dimen.folder_preview_size);
dragRect = new Rect(0, 0, child.getWidth(), previewSize);
}
mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(),
DragController.DRAG_ACTION_MOVE, dragRect);
b.recycle();
}
void addApplicationShortcut(ShortcutInfo info, int screen, int cellX, int cellY,
boolean insertAtFirst, int intersectX, int intersectY) {
final CellLayout cellLayout = (CellLayout) getChildAt(screen);
View view = mLauncher.createShortcut(R.layout.application, cellLayout, (ShortcutInfo) info);
final int[] cellXY = new int[2];
cellLayout.findCellForSpanThatIntersects(cellXY, 1, 1, intersectX, intersectY);
addInScreen(view, screen, cellXY[0], cellXY[1], 1, 1, insertAtFirst);
LauncherModel.addOrMoveItemInDatabase(mLauncher, info,
LauncherSettings.Favorites.CONTAINER_DESKTOP, screen,
cellXY[0], cellXY[1]);
}
/**
* {@inheritDoc}
*/
public boolean acceptDrop(DragObject d) {
// If it's an external drop (e.g. from All Apps), check if it should be accepted
if (d.dragSource != this) {
// Don't accept the drop if we're not over a screen at time of drop
if (mDragTargetLayout == null) {
return false;
}
mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset,
d.dragView, mDragViewVisualCenter);
int spanX = 1;
int spanY = 1;
View ignoreView = null;
if (mDragInfo != null) {
final CellLayout.CellInfo dragCellInfo = mDragInfo;
spanX = dragCellInfo.spanX;
spanY = dragCellInfo.spanY;
ignoreView = dragCellInfo.cell;
} else {
final ItemInfo dragInfo = (ItemInfo) d.dragInfo;
spanX = dragInfo.spanX;
spanY = dragInfo.spanY;
}
mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], spanX, spanY, mDragTargetLayout, mTargetCell);
if (willCreateUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout, mTargetCell, true)) {
return true;
}
if (willAddToExistingUserFolder((ItemInfo) d.dragInfo, mDragTargetLayout,
mTargetCell)) {
return true;
}
// Don't accept the drop if there's no room for the item
if (!mDragTargetLayout.findCellForSpanIgnoring(null, spanX, spanY, ignoreView)) {
mLauncher.showOutOfSpaceMessage();
return false;
}
}
return true;
}
boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell,
boolean considerTimeout) {
View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
boolean hasntMoved = mDragInfo != null && (mDragInfo.cellX == targetCell[0] &&
mDragInfo.cellY == targetCell[1]) && mDragInfo.screen == indexOfChild(target);
if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) {
return false;
}
boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo);
boolean willBecomeShortcut =
(info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT);
return (aboveShortcut && willBecomeShortcut);
}
boolean willAddToExistingUserFolder(Object dragInfo, CellLayout target, int[] targetCell) {
View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
if (dropOverView instanceof FolderIcon) {
FolderIcon fi = (FolderIcon) dropOverView;
if (fi.acceptDrop(dragInfo)) {
return true;
}
}
return false;
}
boolean createUserFolderIfNecessary(View newView, CellLayout target,
int[] targetCell, boolean external, DragView dragView, Runnable postAnimationRunnable) {
View v = target.getChildAt(targetCell[0], targetCell[1]);
boolean hasntMoved = mDragInfo != null
&& (mDragInfo.cellX == targetCell[0] && mDragInfo.cellY == targetCell[1]);
if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false;
mCreateUserFolderOnDrop = false;
final int screen = (targetCell == null) ? mDragInfo.screen : indexOfChild(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) {
int fromScreen = mDragInfo.screen;
CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen);
sourceLayout.removeView(newView);
}
Rect folderLocation = new Rect();
float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation);
target.removeView(v);
FolderIcon fi = mLauncher.addFolder(screen, targetCell[0], targetCell[1]);
destInfo.cellX = -1;
destInfo.cellY = -1;
sourceInfo.cellX = -1;
sourceInfo.cellY = -1;
fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale,
postAnimationRunnable);
return true;
}
return false;
}
boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell,
DragObject d, boolean external) {
View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
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) {
int fromScreen = mDragInfo.screen;
CellLayout sourceLayout = (CellLayout) getChildAt(fromScreen);
sourceLayout.removeView(newView);
}
return true;
}
}
return false;
}
public void onDrop(DragObject d) {
mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView,
mDragViewVisualCenter);
// We want the point to be mapped to the dragTarget.
if (mDragTargetLayout != null) {
mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null);
}
// When you are in customization mode and drag to a particular screen, make that the
// new current/default screen, so any subsequent taps add items to that screen
if (!mLauncher.isAllAppsVisible()) {
int dragTargetIndex = indexOfChild(mDragTargetLayout);
if (mCurrentPage != dragTargetIndex && (isSmall() || mIsSwitchingState)) {
scrollToNewPageWithoutMovingPages(dragTargetIndex);
}
}
CellLayout dropTargetLayout = mDragTargetLayout;
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;
if (dropTargetLayout != null) {
// Move internally
final int screen = (mTargetCell[0] < 0) ?
mDragInfo.screen : indexOfChild(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);
// 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.
boolean dropInscrollArea = mCurrentPage != screen;
if (!dropInscrollArea && createUserFolderIfNecessary(cell, dropTargetLayout,
mTargetCell, false, d.dragView, null)) {
return;
}
if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell, 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
mTargetCell = findNearestVacantArea((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], mDragInfo.spanX, mDragInfo.spanY, cell,
dropTargetLayout, mTargetCell);
if (dropInscrollArea && mState != State.SPRING_LOADED) {
snapToPage(screen);
}
if (mTargetCell[0] >= 0 && mTargetCell[1] >= 0) {
if (screen != mDragInfo.screen) {
// Reparent the view
((CellLayout) getChildAt(mDragInfo.screen)).removeView(cell);
addInScreen(cell, screen, mTargetCell[0], mTargetCell[1], mDragInfo.spanX,
mDragInfo.spanY);
}
// update the item's position after drop
final ItemInfo info = (ItemInfo) cell.getTag();
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams();
dropTargetLayout.onMove(cell, mTargetCell[0], mTargetCell[1]);
lp.cellX = mTargetCell[0];
lp.cellY = mTargetCell[1];
cell.setId(LauncherModel.getCellLayoutChildId(-1, mDragInfo.screen,
mTargetCell[0], mTargetCell[1], mDragInfo.spanX, mDragInfo.spanY));
if (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.resizeMode != AppWidgetProviderInfo.RESIZE_NONE) {
final Runnable resizeRunnable = new Runnable() {
public void run() {
DragLayer dragLayer = mLauncher.getDragLayer();
dragLayer.addResizeFrame(info, hostView, cellLayout);
}
};
post(new Runnable() {
public void run() {
if (!isPageMoving()) {
resizeRunnable.run();
} else {
mDelayedResizeRunnable = resizeRunnable;
}
}
});
}
}
LauncherModel.moveItemInDatabase(mLauncher, info,
LauncherSettings.Favorites.CONTAINER_DESKTOP, screen,
lp.cellX, lp.cellY);
}
}
final CellLayout parent = (CellLayout) cell.getParent().getParent();
// Prepare it to be animated into its new position
// This must be called after the view has been re-parented
final Runnable disableHardwareLayersRunnable = new Runnable() {
@Override
public void run() {
mAnimatingViewIntoPlace = false;
updateChildrenLayersEnabled();
}
};
mAnimatingViewIntoPlace = true;
mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell,
disableHardwareLayersRunnable);
parent.onDropChild(cell);
}
}
public void getViewLocationRelativeToSelf(View v, int[] location) {
getLocationInWindow(location);
int x = location[0];
int y = location[1];
v.getLocationInWindow(location);
int vX = location[0];
int vY = location[1];
location[0] = vX - x;
location[1] = vY - y;
}
public void onDragEnter(DragObject d) {
if (mDragTargetLayout != null) {
mDragTargetLayout.setIsDragOverlapping(false);
mDragTargetLayout.onDragExit();
}
mDragTargetLayout = getCurrentDropLayout();
mDragTargetLayout.setIsDragOverlapping(true);
mDragTargetLayout.onDragEnter();
// Because we don't have space in the Phone UI (the CellLayouts run to the edge) we
// don't need to show the outlines
if (LauncherApplication.isScreenLarge()) {
showOutlines();
}
}
private void doDragExit(DragObject d) {
// Clean up folders
cleanupFolderCreation(d);
// Reset the scroll area and previous drag target
onResetScrollArea();
if (mDragTargetLayout != null) {
mDragTargetLayout.setIsDragOverlapping(false);
mDragTargetLayout.onDragExit();
}
mLastDragOverView = null;
if (!mIsPageMoving) {
hideOutlines();
}
}
public void onDragExit(DragObject d) {
doDragExit(d);
}
public DropTarget getDropTargetDelegate(DragObject d) {
return null;
}
/**
* Tests to see if the drop will be accepted by Launcher, and if so, includes additional data
* in the returned structure related to the widgets that match the drop (or a null list if it is
* a shortcut drop). If the drop is not accepted then a null structure is returned.
*/
private Pair<Integer, List<WidgetMimeTypeHandlerData>> validateDrag(DragEvent event) {
final LauncherModel model = mLauncher.getModel();
final ClipDescription desc = event.getClipDescription();
final int mimeTypeCount = desc.getMimeTypeCount();
for (int i = 0; i < mimeTypeCount; ++i) {
final String mimeType = desc.getMimeType(i);
if (mimeType.equals(InstallShortcutReceiver.SHORTCUT_MIMETYPE)) {
return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, null);
} else {
final List<WidgetMimeTypeHandlerData> widgets =
model.resolveWidgetsForMimeType(mContext, mimeType);
if (widgets.size() > 0) {
return new Pair<Integer, List<WidgetMimeTypeHandlerData>>(i, widgets);
}
}
}
return null;
}
/**
* Global drag and drop handler
*/
@Override
public boolean onDragEvent(DragEvent event) {
final ClipDescription desc = event.getClipDescription();
final CellLayout layout = (CellLayout) getChildAt(mCurrentPage);
final int[] pos = new int[2];
layout.getLocationOnScreen(pos);
// We need to offset the drag coordinates to layout coordinate space
final int x = (int) event.getX() - pos[0];
final int y = (int) event.getY() - pos[1];
switch (event.getAction()) {
case DragEvent.ACTION_DRAG_STARTED: {
// Validate this drag
Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event);
if (test != null) {
boolean isShortcut = (test.second == null);
if (isShortcut) {
// Check if we have enough space on this screen to add a new shortcut
if (!layout.findCellForSpan(pos, 1, 1)) {
mLauncher.showOutOfSpaceMessage();
return false;
}
}
} else {
// Show error message if we couldn't accept any of the items
Toast.makeText(mContext, mContext.getString(R.string.external_drop_widget_error),
Toast.LENGTH_SHORT).show();
return false;
}
// Create the drag outline
// We need to add extra padding to the bitmap to make room for the glow effect
final Canvas canvas = new Canvas();
final int bitmapPadding = HolographicOutlineHelper.MAX_OUTER_BLUR_RADIUS;
mDragOutline = createExternalDragOutline(canvas, bitmapPadding);
// Show the current page outlines to indicate that we can accept this drop
showOutlines();
layout.setIsDragOccuring(true);
layout.onDragEnter();
layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1);
return true;
}
case DragEvent.ACTION_DRAG_LOCATION:
// Visualize the drop location
layout.visualizeDropLocation(null, mDragOutline, x, y, 1, 1);
return true;
case DragEvent.ACTION_DROP: {
// Try and add any shortcuts
final LauncherModel model = mLauncher.getModel();
final ClipData data = event.getClipData();
// We assume that the mime types are ordered in descending importance of
// representation. So we enumerate the list of mime types and alert the
// user if any widgets can handle the drop. Only the most preferred
// representation will be handled.
pos[0] = x;
pos[1] = y;
Pair<Integer, List<WidgetMimeTypeHandlerData>> test = validateDrag(event);
if (test != null) {
final int index = test.first;
final List<WidgetMimeTypeHandlerData> widgets = test.second;
final boolean isShortcut = (widgets == null);
final String mimeType = desc.getMimeType(index);
if (isShortcut) {
final Intent intent = data.getItemAt(index).getIntent();
Object info = model.infoFromShortcutIntent(mContext, intent, data.getIcon());
onDropExternal(new int[] { x, y }, info, layout, false);
} else {
if (widgets.size() == 1) {
// If there is only one item, then go ahead and add and configure
// that widget
final AppWidgetProviderInfo widgetInfo = widgets.get(0).widgetInfo;
final PendingAddWidgetInfo createInfo =
new PendingAddWidgetInfo(widgetInfo, mimeType, data);
mLauncher.addAppWidgetFromDrop(createInfo, mCurrentPage, null, pos);
} else {
// Show the widget picker dialog if there is more than one widget
// that can handle this data type
final InstallWidgetReceiver.WidgetListAdapter adapter =
new InstallWidgetReceiver.WidgetListAdapter(mLauncher, mimeType,
data, widgets, layout, mCurrentPage, pos);
final AlertDialog.Builder builder =
new AlertDialog.Builder(mContext);
builder.setAdapter(adapter, adapter);
builder.setCancelable(true);
builder.setTitle(mContext.getString(
R.string.external_drop_widget_pick_title));
builder.setIcon(R.drawable.ic_no_applications);
builder.show();
}
}
}
return true;
}
case DragEvent.ACTION_DRAG_ENDED:
// Hide the page outlines after the drop
layout.setIsDragOccuring(false);
layout.onDragExit();
hideOutlines();
return true;
}
return super.onDragEvent(event);
}
/*
*
* 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) {
mapPointFromSelfToChild(v, xy, null);
}
/*
*
* Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's
* coordinate space. The argument xy is modified with the return result.
*
* if cachedInverseMatrix is not null, this method will just use that matrix instead of
* computing it itself; we use this to avoid redundant matrix inversions in
* findMatchingPageForDragOver
*
*/
void mapPointFromSelfToChild(View v, float[] xy, Matrix cachedInverseMatrix) {
if (cachedInverseMatrix == null) {
v.getMatrix().invert(mTempInverseMatrix);
cachedInverseMatrix = mTempInverseMatrix;
}
xy[0] = xy[0] + mScrollX - v.getLeft();
xy[1] = xy[1] + mScrollY - v.getTop();
cachedInverseMatrix.mapPoints(xy);
}
/*
*
* 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) {
v.getMatrix().mapPoints(xy);
xy[0] -= (mScrollX - v.getLeft());
xy[1] -= (mScrollY - 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;
}
/*
*
* Returns true if the passed CellLayout cl overlaps with dragView
*
*/
boolean overlaps(CellLayout cl, DragView dragView,
int dragViewX, int dragViewY, Matrix cachedInverseMatrix) {
// Transform the coordinates of the item being dragged to the CellLayout's coordinates
final float[] draggedItemTopLeft = mTempDragCoordinates;
draggedItemTopLeft[0] = dragViewX;
draggedItemTopLeft[1] = dragViewY;
final float[] draggedItemBottomRight = mTempDragBottomRightCoordinates;
draggedItemBottomRight[0] = draggedItemTopLeft[0] + dragView.getDragRegionWidth();
draggedItemBottomRight[1] = draggedItemTopLeft[1] + dragView.getDragRegionHeight();
// Transform the dragged item's top left coordinates
// to the CellLayout's local coordinates
mapPointFromSelfToChild(cl, draggedItemTopLeft, cachedInverseMatrix);
float overlapRegionLeft = Math.max(0f, draggedItemTopLeft[0]);
float overlapRegionTop = Math.max(0f, draggedItemTopLeft[1]);
if (overlapRegionLeft <= cl.getWidth() && overlapRegionTop >= 0) {
// Transform the dragged item's bottom right coordinates
// to the CellLayout's local coordinates
mapPointFromSelfToChild(cl, draggedItemBottomRight, cachedInverseMatrix);
float overlapRegionRight = Math.min(cl.getWidth(), draggedItemBottomRight[0]);
float overlapRegionBottom = Math.min(cl.getHeight(), draggedItemBottomRight[1]);
if (overlapRegionRight >= 0 && overlapRegionBottom <= cl.getHeight()) {
float overlap = (overlapRegionRight - overlapRegionLeft) *
(overlapRegionBottom - overlapRegionTop);
if (overlap > 0) {
return true;
}
}
}
return false;
}
/*
*
* 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, int originX, int originY, int offsetX, int offsetY, 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++) {
CellLayout cl = (CellLayout)getChildAt(i);
final float[] touchXy = mTempTouchCoordinates;
touchXy[0] = originX + offsetX;
touchXy[1] = originY + offsetY;
// Transform the touch coordinates to the CellLayout's local coordinates
// If the touch point is within the bounds of the cell layout, we can return immediately
cl.getMatrix().invert(mTempInverseMatrix);
mapPointFromSelfToChild(cl, touchXy, mTempInverseMatrix);
if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() &&
touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) {
return cl;
}
if (!exact && overlaps(cl, dragView, originX, originY, mTempInverseMatrix)) {
// 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 + offsetX;
touchXy[1] = originY + offsetY;
// Calculate the distance between the center of the CellLayout
// and the touch point
float dist = squaredDistance(touchXy, cellLayoutCenter);
if (dist < smallestDistSoFar) {
smallestDistSoFar = dist;
bestMatchingScreen = cl;
}
}
}
return bestMatchingScreen;
}
// This is used to compute the visual center of the dragView. This point is then
// used to visualize drop locations and determine where to drop an item. The idea is that
// the visual center represents the user's interpretation of where the item is, and hence
// is the appropriate point to use when determining drop location.
private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset,
DragView dragView, float[] recycle) {
float res[];
if (recycle == null) {
res = new float[2];
} else {
res = recycle;
}
// First off, the drag view has been shifted in a way that is not represented in the
// x and y values or the x/yOffsets. Here we account for that shift.
x += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetX);
y += getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY);
// These represent the visual top and left of drag view if a dragRect was provided.
// If a dragRect was not provided, then they correspond to the actual view left and
// top, as the dragRect is in that case taken to be the entire dragView.
// R.dimen.dragViewOffsetY.
int left = x - xOffset;
int top = y - yOffset;
// In order to find the visual center, we shift by half the dragRect
res[0] = left + dragView.getDragRegion().width() / 2;
res[1] = top + dragView.getDragRegion().height() / 2;
return res;
}
public void onDragOver(DragObject d) {
// Skip drag over events while we are dragging over side pages
if (mInScrollArea) return;
if (mIsSwitchingState) return;
CellLayout layout;
ItemInfo item = (ItemInfo) d.dragInfo;
// Ensure that we have proper spans for the item that we are dropping
if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found");
// Identify whether we have dragged over a side page
if (isSmall()) {
int left = d.x - d.xOffset;
int top = d.y - d.yOffset;
layout = findMatchingPageForDragOver(d.dragView, left, top, d.xOffset, d.yOffset, true);
if (layout != mDragTargetLayout) {
// Cancel all intermediate folder states
cleanupFolderCreation(d);
if (mDragTargetLayout != null) {
mDragTargetLayout.setIsDragOverlapping(false);
mDragTargetLayout.onDragExit();
}
mDragTargetLayout = layout;
if (mDragTargetLayout != null) {
mDragTargetLayout.setIsDragOverlapping(true);
mDragTargetLayout.onDragEnter();
} else {
mLastDragOverView = null;
}
boolean isInSpringLoadedMode = (mState == State.SPRING_LOADED);
if (isInSpringLoadedMode) {
mSpringLoadedDragController.setAlarm(mDragTargetLayout);
}
}
} else {
layout = getCurrentDropLayout();
if (layout != mDragTargetLayout) {
if (mDragTargetLayout != null) {
mDragTargetLayout.setIsDragOverlapping(false);
mDragTargetLayout.onDragExit();
}
mDragTargetLayout = layout;
mDragTargetLayout.setIsDragOverlapping(true);
mDragTargetLayout.onDragEnter();
}
}
// Handle the drag over
if (mDragTargetLayout != null) {
final View child = (mDragInfo == null) ? null : mDragInfo.cell;
mDragViewVisualCenter = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset,
d.dragView, mDragViewVisualCenter);
// We want the point to be mapped to the dragTarget.
mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter, null);
ItemInfo info = (ItemInfo) d.dragInfo;
mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], 1, 1, mDragTargetLayout, mTargetCell);
final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0],
mTargetCell[1]);
boolean userFolderPending = willCreateUserFolder(info, mDragTargetLayout,
mTargetCell, false);
boolean isOverFolder = dragOverView instanceof FolderIcon;
if (dragOverView != mLastDragOverView) {
cancelFolderCreation();
if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) {
((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo);
}
}
if (userFolderPending && dragOverView != mLastDragOverView) {
mFolderCreationAlarm.setOnAlarmListener(new
FolderCreationAlarmListener(mDragTargetLayout, mTargetCell[0], mTargetCell[1]));
mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT);
}
if (dragOverView != mLastDragOverView && isOverFolder) {
((FolderIcon) dragOverView).onDragEnter(d.dragInfo);
if (mDragTargetLayout != null) {
mDragTargetLayout.clearDragOutlines();
}
}
mLastDragOverView = dragOverView;
if (!mCreateUserFolderOnDrop && !isOverFolder) {
mDragTargetLayout.visualizeDropLocation(child, mDragOutline,
(int) mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1],
item.spanX, item.spanY);
}
}
}
private void cleanupFolderCreation(DragObject d) {
if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) {
mDragFolderRingAnimator.animateToNaturalState();
}
if (mLastDragOverView != null && mLastDragOverView instanceof FolderIcon) {
if (d != null) {
((FolderIcon) mLastDragOverView).onDragExit(d.dragInfo);
}
}
mFolderCreationAlarm.cancelAlarm();
}
private void cancelFolderCreation() {
if (mDragFolderRingAnimator != null && mCreateUserFolderOnDrop) {
mDragFolderRingAnimator.animateToNaturalState();
}
mCreateUserFolderOnDrop = false;
mFolderCreationAlarm.cancelAlarm();
}
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) {
mDragFolderRingAnimator = new FolderRingAnimator(mLauncher, null);
}
mDragFolderRingAnimator.setCell(cellX, cellY);
mDragFolderRingAnimator.setCellLayout(layout);
mDragFolderRingAnimator.animateToAcceptState();
layout.showFolderAccept(mDragFolderRingAnimator);
layout.clearDragOutlines();
mCreateUserFolderOnDrop = true;
}
}
@Override
public void getHitRect(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.
final Display d = mLauncher.getWindowManager().getDefaultDisplay();
outRect.set(0, 0, d.getWidth(), d.getHeight());
}
/**
* Add the item specified by dragInfo to the given layout.
* @return true if successful
*/
public boolean addExternalItemToScreen(ItemInfo dragInfo, CellLayout layout) {
if (layout.findCellForSpan(mTempEstimate, dragInfo.spanX, dragInfo.spanY)) {
onDropExternal(dragInfo.dropPos, (ItemInfo) dragInfo, (CellLayout) layout, false);
return true;
}
mLauncher.showOutOfSpaceMessage();
return false;
}
private void onDropExternal(int[] touchXY, Object dragInfo,
CellLayout cellLayout, boolean insertAtFirst) {
onDropExternal(touchXY, dragInfo, cellLayout, insertAtFirst, null);
}
/**
* Drop an item that didn't originate on one of the workspace screens.
* It may have come from Launcher (e.g. from all apps or customize), or it may have
* come from another app altogether.
*
* NOTE: This can also be called when we are outside of a drag event, when we want
* to add an item to one of the workspace screens.
*/
private void onDropExternal(final int[] touchXY, final Object dragInfo,
final CellLayout cellLayout, boolean insertAtFirst, DragObject d) {
final Runnable exitSpringLoadedRunnable = new Runnable() {
@Override
public void run() {
mLauncher.exitSpringLoadedDragModeDelayed(false);
}
};
ItemInfo info = (ItemInfo) dragInfo;
int spanX = info.spanX;
int spanY = info.spanY;
if (mDragInfo != null) {
spanX = mDragInfo.spanX;
spanY = mDragInfo.spanY;
}
final int screen = indexOfChild(cellLayout);
if (screen != mCurrentPage && mState != State.SPRING_LOADED) {
snapToPage(screen);
}
if (info instanceof PendingAddItemInfo) {
final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) dragInfo;
mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], spanX, spanY, null,
cellLayout, mTargetCell);
Runnable onAnimationCompleteRunnable = new Runnable() {
@Override
public void run() {
// When dragging and dropping from customization tray, we deal with creating
// widgets/shortcuts/folders in a slightly different way
switch (pendingInfo.itemType) {
case LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET:
mLauncher.addAppWidgetFromDrop((PendingAddWidgetInfo) pendingInfo,
screen, mTargetCell, null);
break;
case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
mLauncher.processShortcutFromDrop(pendingInfo.componentName,
screen, mTargetCell, null);
break;
default:
throw new IllegalStateException("Unknown item type: " +
pendingInfo.itemType);
}
cellLayout.onDragExit();
}
};
// Now we animate the dragView, (ie. the widget or shortcut preview) into its final
// location and size on the home screen.
int loc[] = new int[2];
cellLayout.cellToPoint(mTargetCell[0], mTargetCell[1], loc);
RectF r = new RectF();
cellLayout.cellToRect(mTargetCell[0], mTargetCell[1], spanX, spanY, r);
float cellLayoutScale =
mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(cellLayout, loc);
float dragViewScale = r.width() / d.dragView.getMeasuredWidth();
// The animation will scale the dragView about its center, so we need to center about
// the final location.
loc[0] -= (d.dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2;
loc[1] -= (d.dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2;
mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, loc,
dragViewScale * cellLayoutScale, onAnimationCompleteRunnable);
} 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 ApplicationInfo) {
// Came from all apps -- make a copy
info = new ShortcutInfo((ApplicationInfo) info);
}
view = mLauncher.createShortcut(R.layout.application, cellLayout,
(ShortcutInfo) info);
break;
case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout,
(FolderInfo) info, mIconCache);
break;
default:
throw new IllegalStateException("Unknown item type: " + info.itemType);
}
// First we find the cell nearest to point at which the item is
// dropped, without any consideration to whether there is an item there.
if (touchXY != null) {
mTargetCell = findNearestArea((int) touchXY[0], (int) touchXY[1], spanX, spanY,
cellLayout, mTargetCell);
d.postAnimationRunnable = exitSpringLoadedRunnable;
if (createUserFolderIfNecessary(view, cellLayout, mTargetCell, true, d.dragView,
d.postAnimationRunnable)) {
return;
}
if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, d, true)) {
return;
}
}
if (touchXY != null) {
// when dragging and dropping, just find the closest free spot
mTargetCell = findNearestVacantArea(touchXY[0], touchXY[1], 1, 1, null,
cellLayout, mTargetCell);
} else {
cellLayout.findCellForSpan(mTargetCell, 1, 1);
}
addInScreen(view, indexOfChild(cellLayout), mTargetCell[0],
mTargetCell[1], info.spanX, info.spanY, insertAtFirst);
cellLayout.onDropChild(view);
cellLayout.animateDrop();
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams();
cellLayout.getChildrenLayout().measureChild(view);
LauncherModel.addOrMoveItemInDatabase(mLauncher, info,
LauncherSettings.Favorites.CONTAINER_DESKTOP, screen,
lp.cellX, lp.cellY);
if (d.dragView != null) {
mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view,
exitSpringLoadedRunnable);
}
}
}
/**
* Return the current {@link CellLayout}, correctly picking the destination
* screen while a scroll is in progress.
*/
public CellLayout getCurrentDropLayout() {
return (CellLayout) getChildAt(mNextPage == INVALID_PAGE ? mCurrentPage : mNextPage);
}
/**
* 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;
}
/**
* Calculate the nearest cell where the given object would be dropped.
*
* pixelX and pixelY should be in the coordinate system of layout
*/
private int[] findNearestVacantArea(int pixelX, int pixelY,
int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) {
return layout.findNearestVacantArea(
pixelX, pixelY, spanX, spanY, ignoreView, recycle);
}
/**
* Calculate the nearest cell where the given object would be dropped.
*
* pixelX and pixelY should be in the coordinate system of layout
*/
private int[] findNearestArea(int pixelX, int pixelY,
int spanX, int spanY, CellLayout layout, int[] recycle) {
return layout.findNearestArea(
pixelX, pixelY, spanX, spanY, recycle);
}
void setup(Launcher launcher, DragController dragController) {
mLauncher = launcher;
mSpringLoadedDragController = new SpringLoadedDragController(mLauncher);
mDragController = dragController;
// hardware layers on children are enabled on startup, but should be disabled until
// needed
updateChildrenLayersEnabled();
setWallpaperDimension();
}
/**
* Called at the end of a drag which originated on the workspace.
*/
public void onDropCompleted(View target, DragObject d, boolean success) {
if (success) {
if (target != this) {
if (mDragInfo != null) {
final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen);
cellLayout.removeView(mDragInfo.cell);
if (mDragInfo.cell instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) mDragInfo.cell);
}
}
}
} else if (mDragInfo != null) {
// NOTE: When 'success' is true, onDragExit is called by the DragController before
// calling onDropCompleted(). We call it ourselves here, but maybe this should be
// moved into DragController.cancelDrag().
doDragExit(null);
((CellLayout) getChildAt(mDragInfo.screen)).onDropChild(mDragInfo.cell);
}
mDragOutline = null;
mDragInfo = null;
}
@Override
public void onDragViewVisible() {
((View) mDragInfo.cell).setVisibility(View.GONE);
}
public boolean isDropEnabled() {
return true;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
super.onRestoreInstanceState(state);
Launcher.setScreen(mCurrentPage);
}
@Override
public void scrollLeft() {
if (!isSmall() && !mIsSwitchingState) {
super.scrollLeft();
}
Folder openFolder = getOpenFolder();
if (openFolder != null) {
openFolder.completeDragExit();
}
}
@Override
public void scrollRight() {
if (!isSmall() && !mIsSwitchingState) {
super.scrollRight();
}
Folder openFolder = getOpenFolder();
if (openFolder != null) {
openFolder.completeDragExit();
}
}
@Override
public void onEnterScrollArea(int direction) {
if (!isSmall() && !mIsSwitchingState) {
mInScrollArea = true;
final int page = mCurrentPage + (direction == DragController.SCROLL_LEFT ? -1 : 1);
final CellLayout layout = (CellLayout) getChildAt(page);
cancelFolderCreation();
if (layout != null) {
// Exit the current layout and mark the overlapping layout
if (mDragTargetLayout != null) {
mDragTargetLayout.setIsDragOverlapping(false);
mDragTargetLayout.onDragExit();
}
mDragTargetLayout = layout;
mDragTargetLayout.setIsDragOverlapping(true);
// Workspace is responsible for drawing the edge glow on adjacent pages,
// so we need to redraw the workspace when this may have changed.
invalidate();
}
}
}
@Override
public void onExitScrollArea() {
if (mInScrollArea) {
if (mDragTargetLayout != null) {
// Unmark the overlapping layout and re-enter the current layout
mDragTargetLayout.setIsDragOverlapping(false);
mDragTargetLayout = getCurrentDropLayout();
mDragTargetLayout.onDragEnter();
// Workspace is responsible for drawing the edge glow on adjacent pages,
// so we need to redraw the workspace when this may have changed.
invalidate();
}
mInScrollArea = false;
}
}
private void onResetScrollArea() {
if (mDragTargetLayout != null) {
// Unmark the overlapping layout
mDragTargetLayout.setIsDragOverlapping(false);
// Workspace is responsible for drawing the edge glow on adjacent pages,
// so we need to redraw the workspace when this may have changed.
invalidate();
}
mInScrollArea = false;
}
public Folder getFolderForTag(Object tag) {
final int screenCount = getChildCount();
for (int screen = 0; screen < screenCount; screen++) {
ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout();
int count = currentScreen.getChildCount();
for (int i = 0; i < count; i++) {
View child = currentScreen.getChildAt(i);
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) {
Folder f = (Folder) child;
if (f.getInfo() == tag && f.getInfo().opened) {
return f;
}
}
}
}
return null;
}
public View getViewForTag(Object tag) {
int screenCount = getChildCount();
for (int screen = 0; screen < screenCount; screen++) {
ViewGroup currentScreen = ((CellLayout) getChildAt(screen)).getChildrenLayout();
int count = currentScreen.getChildCount();
for (int i = 0; i < count; i++) {
View child = currentScreen.getChildAt(i);
if (child.getTag() == tag) {
return child;
}
}
}
return null;
}
void clearDropTargets() {
final int screenCount = getChildCount();
for (int i = 0; i < screenCount; i++) {
final CellLayout layoutParent = (CellLayout) getChildAt(i);
final ViewGroup layout = layoutParent.getChildrenLayout();
int childCount = layout.getChildCount();
for (int j = 0; j < childCount; j++) {
View v = layout.getChildAt(j);
if (v instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) v);
}
}
}
}
void removeItems(final ArrayList<ApplicationInfo> apps) {
final int screenCount = getChildCount();
final AppWidgetManager widgets = AppWidgetManager.getInstance(getContext());
final HashSet<String> packageNames = new HashSet<String>();
final int appCount = apps.size();
for (int i = 0; i < appCount; i++) {
packageNames.add(apps.get(i).componentName.getPackageName());
}
for (int i = 0; i < screenCount; i++) {
final CellLayout layoutParent = (CellLayout) getChildAt(i);
final ViewGroup layout = layoutParent.getChildrenLayout();
// Avoid ANRs by treating each screen separately
post(new Runnable() {
public void run() {
final ArrayList<View> childrenToRemove = new ArrayList<View>();
childrenToRemove.clear();
int childCount = layout.getChildCount();
for (int j = 0; j < childCount; j++) {
final View view = layout.getChildAt(j);
Object tag = view.getTag();
if (tag instanceof ShortcutInfo) {
final ShortcutInfo info = (ShortcutInfo) tag;
final Intent intent = info.intent;
final ComponentName name = intent.getComponent();
if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) {
for (String packageName: packageNames) {
if (packageName.equals(name.getPackageName())) {
LauncherModel.deleteItemFromDatabase(mLauncher, info);
childrenToRemove.add(view);
}
}
}
} else if (tag instanceof FolderInfo) {
final FolderInfo info = (FolderInfo) tag;
final ArrayList<ShortcutInfo> contents = info.contents;
final int contentsCount = contents.size();
final ArrayList<ShortcutInfo> appsToRemoveFromFolder =
new ArrayList<ShortcutInfo>();
for (int k = 0; k < contentsCount; k++) {
final ShortcutInfo appInfo = contents.get(k);
final Intent intent = appInfo.intent;
final ComponentName name = intent.getComponent();
if (Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) {
for (String packageName: packageNames) {
if (packageName.equals(name.getPackageName())) {
appsToRemoveFromFolder.add(appInfo);
}
}
}
}
for (ShortcutInfo item: appsToRemoveFromFolder) {
info.remove(item);
LauncherModel.deleteItemFromDatabase(mLauncher, item);
}
} else if (tag instanceof LauncherAppWidgetInfo) {
final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) tag;
final AppWidgetProviderInfo provider =
widgets.getAppWidgetInfo(info.appWidgetId);
if (provider != null) {
for (String packageName: packageNames) {
if (packageName.equals(provider.provider.getPackageName())) {
LauncherModel.deleteItemFromDatabase(mLauncher, info);
childrenToRemove.add(view);
}
}
}
}
}
childCount = childrenToRemove.size();
for (int j = 0; j < childCount; j++) {
View child = childrenToRemove.get(j);
// 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 (childCount > 0) {
layout.requestLayout();
layout.invalidate();
}
}
});
}
}
void updateShortcuts(ArrayList<ApplicationInfo> apps) {
final int screenCount = getChildCount();
for (int i = 0; i < screenCount; i++) {
final ViewGroup layout = ((CellLayout) getChildAt(i)).getChildrenLayout();
int childCount = layout.getChildCount();
for (int j = 0; j < childCount; j++) {
final View view = layout.getChildAt(j);
Object tag = view.getTag();
if (tag instanceof ShortcutInfo) {
ShortcutInfo info = (ShortcutInfo)tag;
// We need to check for ACTION_MAIN otherwise getComponent() might
// return null for some shortcuts (for instance, for shortcuts to
// web pages.)
final Intent intent = info.intent;
final ComponentName name = intent.getComponent();
if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION &&
Intent.ACTION_MAIN.equals(intent.getAction()) && name != null) {
final int appCount = apps.size();
for (int k = 0; k < appCount; k++) {
ApplicationInfo app = apps.get(k);
if (app.componentName.equals(name)) {
info.setIcon(mIconCache.getIcon(info.intent));
((TextView)view).setCompoundDrawablesWithIntrinsicBounds(null,
new FastBitmapDrawable(info.getIcon(mIconCache)),
null, null);
}
}
}
}
}
}
}
void moveToDefaultScreen(boolean animate) {
if (isSmall() || mIsSwitchingState) {
mLauncher.showWorkspace(animate, (CellLayout)getChildAt(mDefaultPage));
} else if (animate) {
snapToPage(mDefaultPage);
} else {
setCurrentPage(mDefaultPage);
}
getChildAt(mDefaultPage).requestFocus();
}
@Override
public void syncPages() {
}
@Override
public void syncPageItems(int page) {
}
@Override
protected String getCurrentPageDescription() {
int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage;
return String.format(mContext.getString(R.string.workspace_scroll_format),
page + 1, getChildCount());
}
public void getLocationInDragLayer(int[] loc) {
mLauncher.getDragLayer().getLocationInDragLayer(this, loc);
}
}