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android / platform / packages / apps / Launcher2 / jb-release / . / src / com / android / launcher2 / AppsCustomizePagedView.java
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/*
* Copyright (C) 2011 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.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.appwidget.AppWidgetHostView;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProviderInfo;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.graphics.Insets;
import android.graphics.MaskFilter;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import android.graphics.TableMaskFilter;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Process;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.widget.GridLayout;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.android.launcher.R;
import com.android.launcher2.DropTarget.DragObject;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.lang.ref.WeakReference;
/**
* A simple callback interface which also provides the results of the task.
*/
interface AsyncTaskCallback {
void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data);
}
/**
* The data needed to perform either of the custom AsyncTasks.
*/
class AsyncTaskPageData {
enum Type {
LoadWidgetPreviewData
}
AsyncTaskPageData(int p, ArrayList<Object> l, ArrayList<Bitmap> si, AsyncTaskCallback bgR,
AsyncTaskCallback postR) {
page = p;
items = l;
sourceImages = si;
generatedImages = new ArrayList<Bitmap>();
maxImageWidth = maxImageHeight = -1;
doInBackgroundCallback = bgR;
postExecuteCallback = postR;
}
AsyncTaskPageData(int p, ArrayList<Object> l, int cw, int ch, AsyncTaskCallback bgR,
AsyncTaskCallback postR) {
page = p;
items = l;
generatedImages = new ArrayList<Bitmap>();
maxImageWidth = cw;
maxImageHeight = ch;
doInBackgroundCallback = bgR;
postExecuteCallback = postR;
}
void cleanup(boolean cancelled) {
// Clean up any references to source/generated bitmaps
if (sourceImages != null) {
if (cancelled) {
for (Bitmap b : sourceImages) {
b.recycle();
}
}
sourceImages.clear();
}
if (generatedImages != null) {
if (cancelled) {
for (Bitmap b : generatedImages) {
b.recycle();
}
}
generatedImages.clear();
}
}
int page;
ArrayList<Object> items;
ArrayList<Bitmap> sourceImages;
ArrayList<Bitmap> generatedImages;
int maxImageWidth;
int maxImageHeight;
AsyncTaskCallback doInBackgroundCallback;
AsyncTaskCallback postExecuteCallback;
}
/**
* A generic template for an async task used in AppsCustomize.
*/
class AppsCustomizeAsyncTask extends AsyncTask<AsyncTaskPageData, Void, AsyncTaskPageData> {
AppsCustomizeAsyncTask(int p, AsyncTaskPageData.Type ty) {
page = p;
threadPriority = Process.THREAD_PRIORITY_DEFAULT;
dataType = ty;
}
@Override
protected AsyncTaskPageData doInBackground(AsyncTaskPageData... params) {
if (params.length != 1) return null;
// Load each of the widget previews in the background
params[0].doInBackgroundCallback.run(this, params[0]);
return params[0];
}
@Override
protected void onPostExecute(AsyncTaskPageData result) {
// All the widget previews are loaded, so we can just callback to inflate the page
result.postExecuteCallback.run(this, result);
}
void setThreadPriority(int p) {
threadPriority = p;
}
void syncThreadPriority() {
Process.setThreadPriority(threadPriority);
}
// The page that this async task is associated with
AsyncTaskPageData.Type dataType;
int page;
int threadPriority;
}
abstract class WeakReferenceThreadLocal<T> {
private ThreadLocal<WeakReference<T>> mThreadLocal;
public WeakReferenceThreadLocal() {
mThreadLocal = new ThreadLocal<WeakReference<T>>();
}
abstract T initialValue();
public void set(T t) {
mThreadLocal.set(new WeakReference<T>(t));
}
public T get() {
WeakReference<T> reference = mThreadLocal.get();
T obj;
if (reference == null) {
obj = initialValue();
mThreadLocal.set(new WeakReference<T>(obj));
return obj;
} else {
obj = reference.get();
if (obj == null) {
obj = initialValue();
mThreadLocal.set(new WeakReference<T>(obj));
}
return obj;
}
}
}
class CanvasCache extends WeakReferenceThreadLocal<Canvas> {
@Override
protected Canvas initialValue() {
return new Canvas();
}
}
class PaintCache extends WeakReferenceThreadLocal<Paint> {
@Override
protected Paint initialValue() {
return null;
}
}
class BitmapCache extends WeakReferenceThreadLocal<Bitmap> {
@Override
protected Bitmap initialValue() {
return null;
}
}
class RectCache extends WeakReferenceThreadLocal<Rect> {
@Override
protected Rect initialValue() {
return new Rect();
}
}
/**
* The Apps/Customize page that displays all the applications, widgets, and shortcuts.
*/
public class AppsCustomizePagedView extends PagedViewWithDraggableItems implements
AllAppsView, View.OnClickListener, View.OnKeyListener, DragSource,
PagedViewIcon.PressedCallback, PagedViewWidget.ShortPressListener,
LauncherTransitionable {
static final String TAG = "AppsCustomizePagedView";
/**
* The different content types that this paged view can show.
*/
public enum ContentType {
Applications,
Widgets
}
// Refs
private Launcher mLauncher;
private DragController mDragController;
private final LayoutInflater mLayoutInflater;
private final PackageManager mPackageManager;
// Save and Restore
private int mSaveInstanceStateItemIndex = -1;
private PagedViewIcon mPressedIcon;
// Content
private ArrayList<ApplicationInfo> mApps;
private ArrayList<Object> mWidgets;
// Cling
private boolean mHasShownAllAppsCling;
private int mClingFocusedX;
private int mClingFocusedY;
// Caching
private Canvas mCanvas;
private Drawable mDefaultWidgetBackground;
private IconCache mIconCache;
// Dimens
private int mContentWidth;
private int mAppIconSize;
private int mMaxAppCellCountX, mMaxAppCellCountY;
private int mWidgetCountX, mWidgetCountY;
private int mWidgetWidthGap, mWidgetHeightGap;
private final float sWidgetPreviewIconPaddingPercentage = 0.25f;
private PagedViewCellLayout mWidgetSpacingLayout;
private int mNumAppsPages;
private int mNumWidgetPages;
// Relating to the scroll and overscroll effects
Workspace.ZInterpolator mZInterpolator = new Workspace.ZInterpolator(0.5f);
private static float CAMERA_DISTANCE = 6500;
private static float TRANSITION_SCALE_FACTOR = 0.74f;
private static float TRANSITION_PIVOT = 0.65f;
private static float TRANSITION_MAX_ROTATION = 22;
private static final boolean PERFORM_OVERSCROLL_ROTATION = true;
private AccelerateInterpolator mAlphaInterpolator = new AccelerateInterpolator(0.9f);
private DecelerateInterpolator mLeftScreenAlphaInterpolator = new DecelerateInterpolator(4);
// Previews & outlines
ArrayList<AppsCustomizeAsyncTask> mRunningTasks;
private static final int sPageSleepDelay = 200;
private Runnable mInflateWidgetRunnable = null;
private Runnable mBindWidgetRunnable = null;
static final int WIDGET_NO_CLEANUP_REQUIRED = -1;
static final int WIDGET_PRELOAD_PENDING = 0;
static final int WIDGET_BOUND = 1;
static final int WIDGET_INFLATED = 2;
int mWidgetCleanupState = WIDGET_NO_CLEANUP_REQUIRED;
int mWidgetLoadingId = -1;
PendingAddWidgetInfo mCreateWidgetInfo = null;
private boolean mDraggingWidget = false;
// Deferral of loading widget previews during launcher transitions
private boolean mInTransition;
private ArrayList<AsyncTaskPageData> mDeferredSyncWidgetPageItems =
new ArrayList<AsyncTaskPageData>();
private ArrayList<Runnable> mDeferredPrepareLoadWidgetPreviewsTasks =
new ArrayList<Runnable>();
// Used for drawing shortcut previews
BitmapCache mCachedShortcutPreviewBitmap = new BitmapCache();
PaintCache mCachedShortcutPreviewPaint = new PaintCache();
CanvasCache mCachedShortcutPreviewCanvas = new CanvasCache();
// Used for drawing widget previews
CanvasCache mCachedAppWidgetPreviewCanvas = new CanvasCache();
RectCache mCachedAppWidgetPreviewSrcRect = new RectCache();
RectCache mCachedAppWidgetPreviewDestRect = new RectCache();
PaintCache mCachedAppWidgetPreviewPaint = new PaintCache();
public AppsCustomizePagedView(Context context, AttributeSet attrs) {
super(context, attrs);
mLayoutInflater = LayoutInflater.from(context);
mPackageManager = context.getPackageManager();
mApps = new ArrayList<ApplicationInfo>();
mWidgets = new ArrayList<Object>();
mIconCache = ((LauncherApplication) context.getApplicationContext()).getIconCache();
mCanvas = new Canvas();
mRunningTasks = new ArrayList<AppsCustomizeAsyncTask>();
// Save the default widget preview background
Resources resources = context.getResources();
mDefaultWidgetBackground = resources.getDrawable(R.drawable.default_widget_preview_holo);
mAppIconSize = resources.getDimensionPixelSize(R.dimen.app_icon_size);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.AppsCustomizePagedView, 0, 0);
mMaxAppCellCountX = a.getInt(R.styleable.AppsCustomizePagedView_maxAppCellCountX, -1);
mMaxAppCellCountY = a.getInt(R.styleable.AppsCustomizePagedView_maxAppCellCountY, -1);
mWidgetWidthGap =
a.getDimensionPixelSize(R.styleable.AppsCustomizePagedView_widgetCellWidthGap, 0);
mWidgetHeightGap =
a.getDimensionPixelSize(R.styleable.AppsCustomizePagedView_widgetCellHeightGap, 0);
mWidgetCountX = a.getInt(R.styleable.AppsCustomizePagedView_widgetCountX, 2);
mWidgetCountY = a.getInt(R.styleable.AppsCustomizePagedView_widgetCountY, 2);
mClingFocusedX = a.getInt(R.styleable.AppsCustomizePagedView_clingFocusedX, 0);
mClingFocusedY = a.getInt(R.styleable.AppsCustomizePagedView_clingFocusedY, 0);
a.recycle();
mWidgetSpacingLayout = new PagedViewCellLayout(getContext());
// The padding on the non-matched dimension for the default widget preview icons
// (top + bottom)
mFadeInAdjacentScreens = false;
// Unless otherwise specified this view is important for accessibility.
if (getImportantForAccessibility() == View.IMPORTANT_FOR_ACCESSIBILITY_AUTO) {
setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
}
}
@Override
protected void init() {
super.init();
mCenterPagesVertically = false;
Context context = getContext();
Resources r = context.getResources();
setDragSlopeThreshold(r.getInteger(R.integer.config_appsCustomizeDragSlopeThreshold)/100f);
}
@Override
protected void onUnhandledTap(MotionEvent ev) {
if (LauncherApplication.isScreenLarge()) {
// Dismiss AppsCustomize if we tap
mLauncher.showWorkspace(true);
}
}
/** Returns the item index of the center item on this page so that we can restore to this
* item index when we rotate. */
private int getMiddleComponentIndexOnCurrentPage() {
int i = -1;
if (getPageCount() > 0) {
int currentPage = getCurrentPage();
if (currentPage < mNumAppsPages) {
PagedViewCellLayout layout = (PagedViewCellLayout) getPageAt(currentPage);
PagedViewCellLayoutChildren childrenLayout = layout.getChildrenLayout();
int numItemsPerPage = mCellCountX * mCellCountY;
int childCount = childrenLayout.getChildCount();
if (childCount > 0) {
i = (currentPage * numItemsPerPage) + (childCount / 2);
}
} else {
int numApps = mApps.size();
PagedViewGridLayout layout = (PagedViewGridLayout) getPageAt(currentPage);
int numItemsPerPage = mWidgetCountX * mWidgetCountY;
int childCount = layout.getChildCount();
if (childCount > 0) {
i = numApps +
((currentPage - mNumAppsPages) * numItemsPerPage) + (childCount / 2);
}
}
}
return i;
}
/** Get the index of the item to restore to if we need to restore the current page. */
int getSaveInstanceStateIndex() {
if (mSaveInstanceStateItemIndex == -1) {
mSaveInstanceStateItemIndex = getMiddleComponentIndexOnCurrentPage();
}
return mSaveInstanceStateItemIndex;
}
/** Returns the page in the current orientation which is expected to contain the specified
* item index. */
int getPageForComponent(int index) {
if (index < 0) return 0;
if (index < mApps.size()) {
int numItemsPerPage = mCellCountX * mCellCountY;
return (index / numItemsPerPage);
} else {
int numItemsPerPage = mWidgetCountX * mWidgetCountY;
return mNumAppsPages + ((index - mApps.size()) / numItemsPerPage);
}
}
/** Restores the page for an item at the specified index */
void restorePageForIndex(int index) {
if (index < 0) return;
mSaveInstanceStateItemIndex = index;
}
private void updatePageCounts() {
mNumWidgetPages = (int) Math.ceil(mWidgets.size() /
(float) (mWidgetCountX * mWidgetCountY));
mNumAppsPages = (int) Math.ceil((float) mApps.size() / (mCellCountX * mCellCountY));
}
protected void onDataReady(int width, int height) {
// Note that we transpose the counts in portrait so that we get a similar layout
boolean isLandscape = getResources().getConfiguration().orientation ==
Configuration.ORIENTATION_LANDSCAPE;
int maxCellCountX = Integer.MAX_VALUE;
int maxCellCountY = Integer.MAX_VALUE;
if (LauncherApplication.isScreenLarge()) {
maxCellCountX = (isLandscape ? LauncherModel.getCellCountX() :
LauncherModel.getCellCountY());
maxCellCountY = (isLandscape ? LauncherModel.getCellCountY() :
LauncherModel.getCellCountX());
}
if (mMaxAppCellCountX > -1) {
maxCellCountX = Math.min(maxCellCountX, mMaxAppCellCountX);
}
if (mMaxAppCellCountY > -1) {
maxCellCountY = Math.min(maxCellCountY, mMaxAppCellCountY);
}
// Now that the data is ready, we can calculate the content width, the number of cells to
// use for each page
mWidgetSpacingLayout.setGap(mPageLayoutWidthGap, mPageLayoutHeightGap);
mWidgetSpacingLayout.setPadding(mPageLayoutPaddingLeft, mPageLayoutPaddingTop,
mPageLayoutPaddingRight, mPageLayoutPaddingBottom);
mWidgetSpacingLayout.calculateCellCount(width, height, maxCellCountX, maxCellCountY);
mCellCountX = mWidgetSpacingLayout.getCellCountX();
mCellCountY = mWidgetSpacingLayout.getCellCountY();
updatePageCounts();
// Force a measure to update recalculate the gaps
int widthSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST);
int heightSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.AT_MOST);
mWidgetSpacingLayout.measure(widthSpec, heightSpec);
mContentWidth = mWidgetSpacingLayout.getContentWidth();
AppsCustomizeTabHost host = (AppsCustomizeTabHost) getTabHost();
final boolean hostIsTransitioning = host.isTransitioning();
// Restore the page
int page = getPageForComponent(mSaveInstanceStateItemIndex);
invalidatePageData(Math.max(0, page), hostIsTransitioning);
// Show All Apps cling if we are finished transitioning, otherwise, we will try again when
// the transition completes in AppsCustomizeTabHost (otherwise the wrong offsets will be
// returned while animating)
if (!hostIsTransitioning) {
post(new Runnable() {
@Override
public void run() {
showAllAppsCling();
}
});
}
}
void showAllAppsCling() {
if (!mHasShownAllAppsCling && isDataReady()) {
mHasShownAllAppsCling = true;
// Calculate the position for the cling punch through
int[] offset = new int[2];
int[] pos = mWidgetSpacingLayout.estimateCellPosition(mClingFocusedX, mClingFocusedY);
mLauncher.getDragLayer().getLocationInDragLayer(this, offset);
// PagedViews are centered horizontally but top aligned
pos[0] += (getMeasuredWidth() - mWidgetSpacingLayout.getMeasuredWidth()) / 2 +
offset[0];
pos[1] += offset[1];
mLauncher.showFirstRunAllAppsCling(pos);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = MeasureSpec.getSize(heightMeasureSpec);
if (!isDataReady()) {
if (!mApps.isEmpty() && !mWidgets.isEmpty()) {
setDataIsReady();
setMeasuredDimension(width, height);
onDataReady(width, height);
}
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
public void onPackagesUpdated() {
// TODO: this isn't ideal, but we actually need to delay here. This call is triggered
// by a broadcast receiver, and in order for it to work correctly, we need to know that
// the AppWidgetService has already received and processed the same broadcast. Since there
// is no guarantee about ordering of broadcast receipt, we just delay here. This is a
// workaround until we add a callback from AppWidgetService to AppWidgetHost when widget
// packages are added, updated or removed.
postDelayed(new Runnable() {
public void run() {
updatePackages();
}
}, 1500);
}
public void updatePackages() {
// Get the list of widgets and shortcuts
mWidgets.clear();
List<AppWidgetProviderInfo> widgets =
AppWidgetManager.getInstance(mLauncher).getInstalledProviders();
Intent shortcutsIntent = new Intent(Intent.ACTION_CREATE_SHORTCUT);
List<ResolveInfo> shortcuts = mPackageManager.queryIntentActivities(shortcutsIntent, 0);
for (AppWidgetProviderInfo widget : widgets) {
if (widget.minWidth > 0 && widget.minHeight > 0) {
// Ensure that all widgets we show can be added on a workspace of this size
int[] spanXY = Launcher.getSpanForWidget(mLauncher, widget);
int[] minSpanXY = Launcher.getMinSpanForWidget(mLauncher, widget);
int minSpanX = Math.min(spanXY[0], minSpanXY[0]);
int minSpanY = Math.min(spanXY[1], minSpanXY[1]);
if (minSpanX <= LauncherModel.getCellCountX() &&
minSpanY <= LauncherModel.getCellCountY()) {
mWidgets.add(widget);
} else {
Log.e(TAG, "Widget " + widget.provider + " can not fit on this device (" +
widget.minWidth + ", " + widget.minHeight + ")");
}
} else {
Log.e(TAG, "Widget " + widget.provider + " has invalid dimensions (" +
widget.minWidth + ", " + widget.minHeight + ")");
}
}
mWidgets.addAll(shortcuts);
Collections.sort(mWidgets,
new LauncherModel.WidgetAndShortcutNameComparator(mPackageManager));
updatePageCounts();
invalidateOnDataChange();
}
@Override
public void onClick(View v) {
// When we have exited all apps or are in transition, disregard clicks
if (!mLauncher.isAllAppsCustomizeOpen() ||
mLauncher.getWorkspace().isSwitchingState()) return;
if (v instanceof PagedViewIcon) {
// Animate some feedback to the click
final ApplicationInfo appInfo = (ApplicationInfo) v.getTag();
// Lock the drawable state to pressed until we return to Launcher
if (mPressedIcon != null) {
mPressedIcon.lockDrawableState();
}
// NOTE: We want all transitions from launcher to act as if the wallpaper were enabled
// to be consistent. So re-enable the flag here, and we will re-disable it as necessary
// when Launcher resumes and we are still in AllApps.
mLauncher.updateWallpaperVisibility(true);
mLauncher.startActivitySafely(v, appInfo.intent, appInfo);
} else if (v instanceof PagedViewWidget) {
// Let the user know that they have to long press to add a widget
Toast.makeText(getContext(), R.string.long_press_widget_to_add,
Toast.LENGTH_SHORT).show();
// Create a little animation to show that the widget can move
float offsetY = getResources().getDimensionPixelSize(R.dimen.dragViewOffsetY);
final ImageView p = (ImageView) v.findViewById(R.id.widget_preview);
AnimatorSet bounce = new AnimatorSet();
ValueAnimator tyuAnim = ObjectAnimator.ofFloat(p, "translationY", offsetY);
tyuAnim.setDuration(125);
ValueAnimator tydAnim = ObjectAnimator.ofFloat(p, "translationY", 0f);
tydAnim.setDuration(100);
bounce.play(tyuAnim).before(tydAnim);
bounce.setInterpolator(new AccelerateInterpolator());
bounce.start();
}
}
public boolean onKey(View v, int keyCode, KeyEvent event) {
return FocusHelper.handleAppsCustomizeKeyEvent(v, keyCode, event);
}
/*
* PagedViewWithDraggableItems implementation
*/
@Override
protected void determineDraggingStart(android.view.MotionEvent ev) {
// Disable dragging by pulling an app down for now.
}
private void beginDraggingApplication(View v) {
mLauncher.getWorkspace().onDragStartedWithItem(v);
mLauncher.getWorkspace().beginDragShared(v, this);
}
private void preloadWidget(final PendingAddWidgetInfo info) {
final AppWidgetProviderInfo pInfo = info.info;
if (pInfo.configure != null) {
return;
}
mWidgetCleanupState = WIDGET_PRELOAD_PENDING;
mBindWidgetRunnable = new Runnable() {
@Override
public void run() {
mWidgetLoadingId = mLauncher.getAppWidgetHost().allocateAppWidgetId();
if (AppWidgetManager.getInstance(mLauncher)
.bindAppWidgetIdIfAllowed(mWidgetLoadingId, info.componentName)) {
mWidgetCleanupState = WIDGET_BOUND;
}
}
};
post(mBindWidgetRunnable);
mInflateWidgetRunnable = new Runnable() {
@Override
public void run() {
AppWidgetHostView hostView = mLauncher.
getAppWidgetHost().createView(getContext(), mWidgetLoadingId, pInfo);
info.boundWidget = hostView;
mWidgetCleanupState = WIDGET_INFLATED;
hostView.setVisibility(INVISIBLE);
int[] unScaledSize = mLauncher.getWorkspace().estimateItemSize(info.spanX,
info.spanY, info, false);
// We want the first widget layout to be the correct size. This will be important
// for width size reporting to the AppWidgetManager.
DragLayer.LayoutParams lp = new DragLayer.LayoutParams(unScaledSize[0],
unScaledSize[1]);
lp.x = lp.y = 0;
lp.customPosition = true;
hostView.setLayoutParams(lp);
mLauncher.getDragLayer().addView(hostView);
}
};
post(mInflateWidgetRunnable);
}
@Override
public void onShortPress(View v) {
// We are anticipating a long press, and we use this time to load bind and instantiate
// the widget. This will need to be cleaned up if it turns out no long press occurs.
if (mCreateWidgetInfo != null) {
// Just in case the cleanup process wasn't properly executed. This shouldn't happen.
cleanupWidgetPreloading(false);
}
mCreateWidgetInfo = new PendingAddWidgetInfo((PendingAddWidgetInfo) v.getTag());
preloadWidget(mCreateWidgetInfo);
}
private void cleanupWidgetPreloading(boolean widgetWasAdded) {
if (!widgetWasAdded) {
// If the widget was not added, we may need to do further cleanup.
PendingAddWidgetInfo info = mCreateWidgetInfo;
mCreateWidgetInfo = null;
if (mWidgetCleanupState == WIDGET_PRELOAD_PENDING) {
// We never did any preloading, so just remove pending callbacks to do so
removeCallbacks(mBindWidgetRunnable);
removeCallbacks(mInflateWidgetRunnable);
} else if (mWidgetCleanupState == WIDGET_BOUND) {
// Delete the widget id which was allocated
if (mWidgetLoadingId != -1) {
mLauncher.getAppWidgetHost().deleteAppWidgetId(mWidgetLoadingId);
}
// We never got around to inflating the widget, so remove the callback to do so.
removeCallbacks(mInflateWidgetRunnable);
} else if (mWidgetCleanupState == WIDGET_INFLATED) {
// Delete the widget id which was allocated
if (mWidgetLoadingId != -1) {
mLauncher.getAppWidgetHost().deleteAppWidgetId(mWidgetLoadingId);
}
// The widget was inflated and added to the DragLayer -- remove it.
AppWidgetHostView widget = info.boundWidget;
mLauncher.getDragLayer().removeView(widget);
}
}
mWidgetCleanupState = WIDGET_NO_CLEANUP_REQUIRED;
mWidgetLoadingId = -1;
mCreateWidgetInfo = null;
PagedViewWidget.resetShortPressTarget();
}
@Override
public void cleanUpShortPress(View v) {
if (!mDraggingWidget) {
cleanupWidgetPreloading(false);
}
}
private boolean beginDraggingWidget(View v) {
mDraggingWidget = true;
// Get the widget preview as the drag representation
ImageView image = (ImageView) v.findViewById(R.id.widget_preview);
PendingAddItemInfo createItemInfo = (PendingAddItemInfo) v.getTag();
// If the ImageView doesn't have a drawable yet, the widget preview hasn't been loaded and
// we abort the drag.
if (image.getDrawable() == null) {
mDraggingWidget = false;
return false;
}
// Compose the drag image
Bitmap preview;
Bitmap outline;
float scale = 1f;
if (createItemInfo instanceof PendingAddWidgetInfo) {
// This can happen in some weird cases involving multi-touch. We can't start dragging
// the widget if this is null, so we break out.
if (mCreateWidgetInfo == null) {
return false;
}
PendingAddWidgetInfo createWidgetInfo = mCreateWidgetInfo;
createItemInfo = createWidgetInfo;
int spanX = createItemInfo.spanX;
int spanY = createItemInfo.spanY;
int[] size = mLauncher.getWorkspace().estimateItemSize(spanX, spanY,
createWidgetInfo, true);
FastBitmapDrawable previewDrawable = (FastBitmapDrawable) image.getDrawable();
float minScale = 1.25f;
int maxWidth, maxHeight;
maxWidth = Math.min((int) (previewDrawable.getIntrinsicWidth() * minScale), size[0]);
maxHeight = Math.min((int) (previewDrawable.getIntrinsicHeight() * minScale), size[1]);
preview = getWidgetPreview(createWidgetInfo.componentName, createWidgetInfo.previewImage,
createWidgetInfo.icon, spanX, spanY, maxWidth, maxHeight);
// Determine the image view drawable scale relative to the preview
float[] mv = new float[9];
Matrix m = new Matrix();
m.setRectToRect(
new RectF(0f, 0f, (float) preview.getWidth(), (float) preview.getHeight()),
new RectF(0f, 0f, (float) previewDrawable.getIntrinsicWidth(),
(float) previewDrawable.getIntrinsicHeight()),
Matrix.ScaleToFit.START);
m.getValues(mv);
scale = (float) mv[0];
} else {
PendingAddShortcutInfo createShortcutInfo = (PendingAddShortcutInfo) v.getTag();
Drawable icon = mIconCache.getFullResIcon(createShortcutInfo.shortcutActivityInfo);
preview = Bitmap.createBitmap(icon.getIntrinsicWidth(),
icon.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
mCanvas.setBitmap(preview);
mCanvas.save();
renderDrawableToBitmap(icon, preview, 0, 0,
icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
mCanvas.restore();
mCanvas.setBitmap(null);
createItemInfo.spanX = createItemInfo.spanY = 1;
}
// We use a custom alpha clip table for the default widget previews
Paint alphaClipPaint = null;
if (createItemInfo instanceof PendingAddWidgetInfo) {
if (((PendingAddWidgetInfo) createItemInfo).previewImage != 0) {
MaskFilter alphaClipTable = TableMaskFilter.CreateClipTable(0, 255);
alphaClipPaint = new Paint();
alphaClipPaint.setMaskFilter(alphaClipTable);
}
}
// Save the preview for the outline generation, then dim the preview
outline = Bitmap.createScaledBitmap(preview, preview.getWidth(), preview.getHeight(),
false);
// Start the drag
alphaClipPaint = null;
mLauncher.lockScreenOrientation();
mLauncher.getWorkspace().onDragStartedWithItem(createItemInfo, outline, alphaClipPaint);
mDragController.startDrag(image, preview, this, createItemInfo,
DragController.DRAG_ACTION_COPY, null, scale);
outline.recycle();
preview.recycle();
return true;
}
@Override
protected boolean beginDragging(final View v) {
if (!super.beginDragging(v)) return false;
if (v instanceof PagedViewIcon) {
beginDraggingApplication(v);
} else if (v instanceof PagedViewWidget) {
if (!beginDraggingWidget(v)) {
return false;
}
}
// We delay entering spring-loaded mode slightly to make sure the UI
// thready is free of any work.
postDelayed(new Runnable() {
@Override
public void run() {
// We don't enter spring-loaded mode if the drag has been cancelled
if (mLauncher.getDragController().isDragging()) {
// Dismiss the cling
mLauncher.dismissAllAppsCling(null);
// Reset the alpha on the dragged icon before we drag
resetDrawableState();
// Go into spring loaded mode (must happen before we startDrag())
mLauncher.enterSpringLoadedDragMode();
}
}
}, 150);
return true;
}
/**
* Clean up after dragging.
*
* @param target where the item was dragged to (can be null if the item was flung)
*/
private void endDragging(View target, boolean isFlingToDelete, boolean success) {
if (isFlingToDelete || !success || (target != mLauncher.getWorkspace() &&
!(target instanceof DeleteDropTarget))) {
// Exit spring loaded mode if we have not successfully dropped or have not handled the
// drop in Workspace
mLauncher.exitSpringLoadedDragMode();
}
mLauncher.unlockScreenOrientation(false);
}
@Override
public View getContent() {
return null;
}
@Override
public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) {
mInTransition = true;
if (toWorkspace) {
cancelAllTasks();
}
}
@Override
public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) {
}
@Override
public void onLauncherTransitionStep(Launcher l, float t) {
}
@Override
public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) {
mInTransition = false;
for (AsyncTaskPageData d : mDeferredSyncWidgetPageItems) {
onSyncWidgetPageItems(d);
}
mDeferredSyncWidgetPageItems.clear();
for (Runnable r : mDeferredPrepareLoadWidgetPreviewsTasks) {
r.run();
}
mDeferredPrepareLoadWidgetPreviewsTasks.clear();
mForceDrawAllChildrenNextFrame = !toWorkspace;
}
@Override
public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete,
boolean success) {
// Return early and wait for onFlingToDeleteCompleted if this was the result of a fling
if (isFlingToDelete) return;
endDragging(target, false, success);
// Display an error message if the drag failed due to there not being enough space on the
// target layout we were dropping on.
if (!success) {
boolean showOutOfSpaceMessage = false;
if (target instanceof Workspace) {
int currentScreen = mLauncher.getCurrentWorkspaceScreen();
Workspace workspace = (Workspace) target;
CellLayout layout = (CellLayout) workspace.getChildAt(currentScreen);
ItemInfo itemInfo = (ItemInfo) d.dragInfo;
if (layout != null) {
layout.calculateSpans(itemInfo);
showOutOfSpaceMessage =
!layout.findCellForSpan(null, itemInfo.spanX, itemInfo.spanY);
}
}
if (showOutOfSpaceMessage) {
mLauncher.showOutOfSpaceMessage(false);
}
d.deferDragViewCleanupPostAnimation = false;
}
cleanupWidgetPreloading(success);
mDraggingWidget = false;
}
@Override
public void onFlingToDeleteCompleted() {
// We just dismiss the drag when we fling, so cleanup here
endDragging(null, true, true);
cleanupWidgetPreloading(false);
mDraggingWidget = false;
}
@Override
public boolean supportsFlingToDelete() {
return true;
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
cancelAllTasks();
}
public void clearAllWidgetPages() {
cancelAllTasks();
int count = getChildCount();
for (int i = 0; i < count; i++) {
View v = getPageAt(i);
if (v instanceof PagedViewGridLayout) {
((PagedViewGridLayout) v).removeAllViewsOnPage();
mDirtyPageContent.set(i, true);
}
}
}
private void cancelAllTasks() {
// Clean up all the async tasks
Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
while (iter.hasNext()) {
AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
task.cancel(false);
iter.remove();
mDirtyPageContent.set(task.page, true);
// We've already preallocated the views for the data to load into, so clear them as well
View v = getPageAt(task.page);
if (v instanceof PagedViewGridLayout) {
((PagedViewGridLayout) v).removeAllViewsOnPage();
}
}
mDeferredSyncWidgetPageItems.clear();
mDeferredPrepareLoadWidgetPreviewsTasks.clear();
}
public void setContentType(ContentType type) {
if (type == ContentType.Widgets) {
invalidatePageData(mNumAppsPages, true);
} else if (type == ContentType.Applications) {
invalidatePageData(0, true);
}
}
protected void snapToPage(int whichPage, int delta, int duration) {
super.snapToPage(whichPage, delta, duration);
updateCurrentTab(whichPage);
// Update the thread priorities given the direction lookahead
Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
while (iter.hasNext()) {
AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
int pageIndex = task.page;
if ((mNextPage > mCurrentPage && pageIndex >= mCurrentPage) ||
(mNextPage < mCurrentPage && pageIndex <= mCurrentPage)) {
task.setThreadPriority(getThreadPriorityForPage(pageIndex));
} else {
task.setThreadPriority(Process.THREAD_PRIORITY_LOWEST);
}
}
}
private void updateCurrentTab(int currentPage) {
AppsCustomizeTabHost tabHost = getTabHost();
if (tabHost != null) {
String tag = tabHost.getCurrentTabTag();
if (tag != null) {
if (currentPage >= mNumAppsPages &&
!tag.equals(tabHost.getTabTagForContentType(ContentType.Widgets))) {
tabHost.setCurrentTabFromContent(ContentType.Widgets);
} else if (currentPage < mNumAppsPages &&
!tag.equals(tabHost.getTabTagForContentType(ContentType.Applications))) {
tabHost.setCurrentTabFromContent(ContentType.Applications);
}
}
}
}
/*
* Apps PagedView implementation
*/
private void setVisibilityOnChildren(ViewGroup layout, int visibility) {
int childCount = layout.getChildCount();
for (int i = 0; i < childCount; ++i) {
layout.getChildAt(i).setVisibility(visibility);
}
}
private void setupPage(PagedViewCellLayout layout) {
layout.setCellCount(mCellCountX, mCellCountY);
layout.setGap(mPageLayoutWidthGap, mPageLayoutHeightGap);
layout.setPadding(mPageLayoutPaddingLeft, mPageLayoutPaddingTop,
mPageLayoutPaddingRight, mPageLayoutPaddingBottom);
// Note: We force a measure here to get around the fact that when we do layout calculations
// immediately after syncing, we don't have a proper width. That said, we already know the
// expected page width, so we can actually optimize by hiding all the TextView-based
// children that are expensive to measure, and let that happen naturally later.
setVisibilityOnChildren(layout, View.GONE);
int widthSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST);
int heightSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.AT_MOST);
layout.setMinimumWidth(getPageContentWidth());
layout.measure(widthSpec, heightSpec);
setVisibilityOnChildren(layout, View.VISIBLE);
}
public void syncAppsPageItems(int page, boolean immediate) {
// ensure that we have the right number of items on the pages
int numCells = mCellCountX * mCellCountY;
int startIndex = page * numCells;
int endIndex = Math.min(startIndex + numCells, mApps.size());
PagedViewCellLayout layout = (PagedViewCellLayout) getPageAt(page);
layout.removeAllViewsOnPage();
ArrayList<Object> items = new ArrayList<Object>();
ArrayList<Bitmap> images = new ArrayList<Bitmap>();
for (int i = startIndex; i < endIndex; ++i) {
ApplicationInfo info = mApps.get(i);
PagedViewIcon icon = (PagedViewIcon) mLayoutInflater.inflate(
R.layout.apps_customize_application, layout, false);
icon.applyFromApplicationInfo(info, true, this);
icon.setOnClickListener(this);
icon.setOnLongClickListener(this);
icon.setOnTouchListener(this);
icon.setOnKeyListener(this);
int index = i - startIndex;
int x = index % mCellCountX;
int y = index / mCellCountX;
layout.addViewToCellLayout(icon, -1, i, new PagedViewCellLayout.LayoutParams(x,y, 1,1));
items.add(info);
images.add(info.iconBitmap);
}
layout.createHardwareLayers();
}
/**
* A helper to return the priority for loading of the specified widget page.
*/
private int getWidgetPageLoadPriority(int page) {
// If we are snapping to another page, use that index as the target page index
int toPage = mCurrentPage;
if (mNextPage > -1) {
toPage = mNextPage;
}
// We use the distance from the target page as an initial guess of priority, but if there
// are no pages of higher priority than the page specified, then bump up the priority of
// the specified page.
Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
int minPageDiff = Integer.MAX_VALUE;
while (iter.hasNext()) {
AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
minPageDiff = Math.abs(task.page - toPage);
}
int rawPageDiff = Math.abs(page - toPage);
return rawPageDiff - Math.min(rawPageDiff, minPageDiff);
}
/**
* Return the appropriate thread priority for loading for a given page (we give the current
* page much higher priority)
*/
private int getThreadPriorityForPage(int page) {
// TODO-APPS_CUSTOMIZE: detect number of cores and set thread priorities accordingly below
int pageDiff = getWidgetPageLoadPriority(page);
if (pageDiff <= 0) {
return Process.THREAD_PRIORITY_LESS_FAVORABLE;
} else if (pageDiff <= 1) {
return Process.THREAD_PRIORITY_LOWEST;
} else {
return Process.THREAD_PRIORITY_LOWEST;
}
}
private int getSleepForPage(int page) {
int pageDiff = getWidgetPageLoadPriority(page);
return Math.max(0, pageDiff * sPageSleepDelay);
}
/**
* Creates and executes a new AsyncTask to load a page of widget previews.
*/
private void prepareLoadWidgetPreviewsTask(int page, ArrayList<Object> widgets,
int cellWidth, int cellHeight, int cellCountX) {
// Prune all tasks that are no longer needed
Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
while (iter.hasNext()) {
AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
int taskPage = task.page;
if (taskPage < getAssociatedLowerPageBound(mCurrentPage) ||
taskPage > getAssociatedUpperPageBound(mCurrentPage)) {
task.cancel(false);
iter.remove();
} else {
task.setThreadPriority(getThreadPriorityForPage(taskPage));
}
}
// We introduce a slight delay to order the loading of side pages so that we don't thrash
final int sleepMs = getSleepForPage(page);
AsyncTaskPageData pageData = new AsyncTaskPageData(page, widgets, cellWidth, cellHeight,
new AsyncTaskCallback() {
@Override
public void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data) {
try {
try {
Thread.sleep(sleepMs);
} catch (Exception e) {}
loadWidgetPreviewsInBackground(task, data);
} finally {
if (task.isCancelled()) {
data.cleanup(true);
}
}
}
},
new AsyncTaskCallback() {
@Override
public void run(AppsCustomizeAsyncTask task, AsyncTaskPageData data) {
mRunningTasks.remove(task);
if (task.isCancelled()) return;
// do cleanup inside onSyncWidgetPageItems
onSyncWidgetPageItems(data);
}
});
// Ensure that the task is appropriately prioritized and runs in parallel
AppsCustomizeAsyncTask t = new AppsCustomizeAsyncTask(page,
AsyncTaskPageData.Type.LoadWidgetPreviewData);
t.setThreadPriority(getThreadPriorityForPage(page));
t.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, pageData);
mRunningTasks.add(t);
}
/*
* Widgets PagedView implementation
*/
private void setupPage(PagedViewGridLayout layout) {
layout.setPadding(mPageLayoutPaddingLeft, mPageLayoutPaddingTop,
mPageLayoutPaddingRight, mPageLayoutPaddingBottom);
// Note: We force a measure here to get around the fact that when we do layout calculations
// immediately after syncing, we don't have a proper width.
int widthSpec = MeasureSpec.makeMeasureSpec(getMeasuredWidth(), MeasureSpec.AT_MOST);
int heightSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.AT_MOST);
layout.setMinimumWidth(getPageContentWidth());
layout.measure(widthSpec, heightSpec);
}
private void renderDrawableToBitmap(Drawable d, Bitmap bitmap, int x, int y, int w, int h) {
renderDrawableToBitmap(d, bitmap, x, y, w, h, 1f);
}
private void renderDrawableToBitmap(Drawable d, Bitmap bitmap, int x, int y, int w, int h,
float scale) {
if (bitmap != null) {
Canvas c = new Canvas(bitmap);
c.scale(scale, scale);
Rect oldBounds = d.copyBounds();
d.setBounds(x, y, x + w, y + h);
d.draw(c);
d.setBounds(oldBounds); // Restore the bounds
c.setBitmap(null);
}
}
private Bitmap getShortcutPreview(ResolveInfo info, int maxWidth, int maxHeight) {
Bitmap tempBitmap = mCachedShortcutPreviewBitmap.get();
final Canvas c = mCachedShortcutPreviewCanvas.get();
if (tempBitmap == null ||
tempBitmap.getWidth() != maxWidth ||
tempBitmap.getHeight() != maxHeight) {
tempBitmap = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
mCachedShortcutPreviewBitmap.set(tempBitmap);
} else {
c.setBitmap(tempBitmap);
c.drawColor(0, PorterDuff.Mode.CLEAR);
c.setBitmap(null);
}
// Render the icon
Drawable icon = mIconCache.getFullResIcon(info);
int paddingTop =
getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_top);
int paddingLeft =
getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_left);
int paddingRight =
getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_right);
int scaledIconWidth = (maxWidth - paddingLeft - paddingRight);
float scaleSize = scaledIconWidth / (float) mAppIconSize;
renderDrawableToBitmap(
icon, tempBitmap, paddingLeft, paddingTop, scaledIconWidth, scaledIconWidth);
Bitmap preview = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
c.setBitmap(preview);
Paint p = mCachedShortcutPreviewPaint.get();
if (p == null) {
p = new Paint();
ColorMatrix colorMatrix = new ColorMatrix();
colorMatrix.setSaturation(0);
p.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
p.setAlpha((int) (255 * 0.06f));
//float density = 1f;
//p.setMaskFilter(new BlurMaskFilter(15*density, BlurMaskFilter.Blur.NORMAL));
mCachedShortcutPreviewPaint.set(p);
}
c.drawBitmap(tempBitmap, 0, 0, p);
c.setBitmap(null);
renderDrawableToBitmap(icon, preview, 0, 0, mAppIconSize, mAppIconSize);
return preview;
}
private Bitmap getWidgetPreview(ComponentName provider, int previewImage,
int iconId, int cellHSpan, int cellVSpan, int maxWidth,
int maxHeight) {
// Load the preview image if possible
String packageName = provider.getPackageName();
if (maxWidth < 0) maxWidth = Integer.MAX_VALUE;
if (maxHeight < 0) maxHeight = Integer.MAX_VALUE;
Drawable drawable = null;
if (previewImage != 0) {
drawable = mPackageManager.getDrawable(packageName, previewImage, null);
if (drawable == null) {
Log.w(TAG, "Can't load widget preview drawable 0x" +
Integer.toHexString(previewImage) + " for provider: " + provider);
}
}
int bitmapWidth;
int bitmapHeight;
Bitmap defaultPreview = null;
boolean widgetPreviewExists = (drawable != null);
if (widgetPreviewExists) {
bitmapWidth = drawable.getIntrinsicWidth();
bitmapHeight = drawable.getIntrinsicHeight();
} else {
// Generate a preview image if we couldn't load one
if (cellHSpan < 1) cellHSpan = 1;
if (cellVSpan < 1) cellVSpan = 1;
BitmapDrawable previewDrawable = (BitmapDrawable) getResources()
.getDrawable(R.drawable.widget_preview_tile);
final int previewDrawableWidth = previewDrawable
.getIntrinsicWidth();
final int previewDrawableHeight = previewDrawable
.getIntrinsicHeight();
bitmapWidth = previewDrawableWidth * cellHSpan; // subtract 2 dips
bitmapHeight = previewDrawableHeight * cellVSpan;
defaultPreview = Bitmap.createBitmap(bitmapWidth, bitmapHeight,
Config.ARGB_8888);
final Canvas c = mCachedAppWidgetPreviewCanvas.get();
c.setBitmap(defaultPreview);
previewDrawable.setBounds(0, 0, bitmapWidth, bitmapHeight);
previewDrawable.setTileModeXY(Shader.TileMode.REPEAT,
Shader.TileMode.REPEAT);
previewDrawable.draw(c);
c.setBitmap(null);
// Draw the icon in the top left corner
int minOffset = (int) (mAppIconSize * sWidgetPreviewIconPaddingPercentage);
int smallestSide = Math.min(bitmapWidth, bitmapHeight);
float iconScale = Math.min((float) smallestSide
/ (mAppIconSize + 2 * minOffset), 1f);
try {
Drawable icon = null;
int hoffset =
(int) ((previewDrawableWidth - mAppIconSize * iconScale) / 2);
int yoffset =
(int) ((previewDrawableHeight - mAppIconSize * iconScale) / 2);
if (iconId > 0)
icon = mIconCache.getFullResIcon(packageName, iconId);
Resources resources = mLauncher.getResources();
if (icon != null) {
renderDrawableToBitmap(icon, defaultPreview, hoffset,
yoffset, (int) (mAppIconSize * iconScale),
(int) (mAppIconSize * iconScale));
}
} catch (Resources.NotFoundException e) {
}
}
// Scale to fit width only - let the widget preview be clipped in the
// vertical dimension
float scale = 1f;
if (bitmapWidth > maxWidth) {
scale = maxWidth / (float) bitmapWidth;
}
if (scale != 1f) {
bitmapWidth = (int) (scale * bitmapWidth);
bitmapHeight = (int) (scale * bitmapHeight);
}
Bitmap preview = Bitmap.createBitmap(bitmapWidth, bitmapHeight,
Config.ARGB_8888);
// Draw the scaled preview into the final bitmap
if (widgetPreviewExists) {
renderDrawableToBitmap(drawable, preview, 0, 0, bitmapWidth,
bitmapHeight);
} else {
final Canvas c = mCachedAppWidgetPreviewCanvas.get();
final Rect src = mCachedAppWidgetPreviewSrcRect.get();
final Rect dest = mCachedAppWidgetPreviewDestRect.get();
c.setBitmap(preview);
src.set(0, 0, defaultPreview.getWidth(), defaultPreview.getHeight());
dest.set(0, 0, preview.getWidth(), preview.getHeight());
Paint p = mCachedAppWidgetPreviewPaint.get();
if (p == null) {
p = new Paint();
p.setFilterBitmap(true);
mCachedAppWidgetPreviewPaint.set(p);
}
c.drawBitmap(defaultPreview, src, dest, p);
c.setBitmap(null);
}
return preview;
}
public void syncWidgetPageItems(final int page, final boolean immediate) {
int numItemsPerPage = mWidgetCountX * mWidgetCountY;
// Calculate the dimensions of each cell we are giving to each widget
final ArrayList<Object> items = new ArrayList<Object>();
int contentWidth = mWidgetSpacingLayout.getContentWidth();
final int cellWidth = ((contentWidth - mPageLayoutPaddingLeft - mPageLayoutPaddingRight
- ((mWidgetCountX - 1) * mWidgetWidthGap)) / mWidgetCountX);
int contentHeight = mWidgetSpacingLayout.getContentHeight();
final int cellHeight = ((contentHeight - mPageLayoutPaddingTop - mPageLayoutPaddingBottom
- ((mWidgetCountY - 1) * mWidgetHeightGap)) / mWidgetCountY);
// Prepare the set of widgets to load previews for in the background
int offset = (page - mNumAppsPages) * numItemsPerPage;
for (int i = offset; i < Math.min(offset + numItemsPerPage, mWidgets.size()); ++i) {
items.add(mWidgets.get(i));
}
// Prepopulate the pages with the other widget info, and fill in the previews later
final PagedViewGridLayout layout = (PagedViewGridLayout) getPageAt(page);
layout.setColumnCount(layout.getCellCountX());
for (int i = 0; i < items.size(); ++i) {
Object rawInfo = items.get(i);
PendingAddItemInfo createItemInfo = null;
PagedViewWidget widget = (PagedViewWidget) mLayoutInflater.inflate(
R.layout.apps_customize_widget, layout, false);
if (rawInfo instanceof AppWidgetProviderInfo) {
// Fill in the widget information
AppWidgetProviderInfo info = (AppWidgetProviderInfo) rawInfo;
createItemInfo = new PendingAddWidgetInfo(info, null, null);
// Determine the widget spans and min resize spans.
int[] spanXY = Launcher.getSpanForWidget(mLauncher, info);
createItemInfo.spanX = spanXY[0];
createItemInfo.spanY = spanXY[1];
int[] minSpanXY = Launcher.getMinSpanForWidget(mLauncher, info);
createItemInfo.minSpanX = minSpanXY[0];
createItemInfo.minSpanY = minSpanXY[1];
widget.applyFromAppWidgetProviderInfo(info, -1, spanXY);
widget.setTag(createItemInfo);
widget.setShortPressListener(this);
} else if (rawInfo instanceof ResolveInfo) {
// Fill in the shortcuts information
ResolveInfo info = (ResolveInfo) rawInfo;
createItemInfo = new PendingAddShortcutInfo(info.activityInfo);
createItemInfo.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
createItemInfo.componentName = new ComponentName(info.activityInfo.packageName,
info.activityInfo.name);
widget.applyFromResolveInfo(mPackageManager, info);
widget.setTag(createItemInfo);
}
widget.setOnClickListener(this);
widget.setOnLongClickListener(this);
widget.setOnTouchListener(this);
widget.setOnKeyListener(this);
// Layout each widget
int ix = i % mWidgetCountX;
int iy = i / mWidgetCountX;
GridLayout.LayoutParams lp = new GridLayout.LayoutParams(
GridLayout.spec(iy, GridLayout.LEFT),
GridLayout.spec(ix, GridLayout.TOP));
lp.width = cellWidth;
lp.height = cellHeight;
lp.setGravity(Gravity.TOP | Gravity.LEFT);
if (ix > 0) lp.leftMargin = mWidgetWidthGap;
if (iy > 0) lp.topMargin = mWidgetHeightGap;
layout.addView(widget, lp);
}
// wait until a call on onLayout to start loading, because
// PagedViewWidget.getPreviewSize() will return 0 if it hasn't been laid out
// TODO: can we do a measure/layout immediately?
layout.setOnLayoutListener(new Runnable() {
public void run() {
// Load the widget previews
int maxPreviewWidth = cellWidth;
int maxPreviewHeight = cellHeight;
if (layout.getChildCount() > 0) {
PagedViewWidget w = (PagedViewWidget) layout.getChildAt(0);
int[] maxSize = w.getPreviewSize();
maxPreviewWidth = maxSize[0];
maxPreviewHeight = maxSize[1];
}
if (immediate) {
AsyncTaskPageData data = new AsyncTaskPageData(page, items,
maxPreviewWidth, maxPreviewHeight, null, null);
loadWidgetPreviewsInBackground(null, data);
onSyncWidgetPageItems(data);
} else {
if (mInTransition) {
mDeferredPrepareLoadWidgetPreviewsTasks.add(this);
} else {
prepareLoadWidgetPreviewsTask(page, items,
maxPreviewWidth, maxPreviewHeight, mWidgetCountX);
}
}
}
});
}
private void loadWidgetPreviewsInBackground(AppsCustomizeAsyncTask task,
AsyncTaskPageData data) {
// loadWidgetPreviewsInBackground can be called without a task to load a set of widget
// previews synchronously
if (task != null) {
// Ensure that this task starts running at the correct priority
task.syncThreadPriority();
}
// Load each of the widget/shortcut previews
ArrayList<Object> items = data.items;
ArrayList<Bitmap> images = data.generatedImages;
int count = items.size();
for (int i = 0; i < count; ++i) {
if (task != null) {
// Ensure we haven't been cancelled yet
if (task.isCancelled()) break;
// Before work on each item, ensure that this task is running at the correct
// priority
task.syncThreadPriority();
}
Object rawInfo = items.get(i);
if (rawInfo instanceof AppWidgetProviderInfo) {
AppWidgetProviderInfo info = (AppWidgetProviderInfo) rawInfo;
int[] cellSpans = Launcher.getSpanForWidget(mLauncher, info);
int maxWidth = Math.min(data.maxImageWidth,
mWidgetSpacingLayout.estimateCellWidth(cellSpans[0]));
int maxHeight = Math.min(data.maxImageHeight,
mWidgetSpacingLayout.estimateCellHeight(cellSpans[1]));
Bitmap b = getWidgetPreview(info.provider, info.previewImage, info.icon,
cellSpans[0], cellSpans[1], maxWidth, maxHeight);
images.add(b);
} else if (rawInfo instanceof ResolveInfo) {
// Fill in the shortcuts information
ResolveInfo info = (ResolveInfo) rawInfo;
images.add(getShortcutPreview(info, data.maxImageWidth, data.maxImageHeight));
}
}
}
private void onSyncWidgetPageItems(AsyncTaskPageData data) {
if (mInTransition) {
mDeferredSyncWidgetPageItems.add(data);
return;
}
try {
int page = data.page;
PagedViewGridLayout layout = (PagedViewGridLayout) getPageAt(page);
ArrayList<Object> items = data.items;
int count = items.size();
for (int i = 0; i < count; ++i) {
PagedViewWidget widget = (PagedViewWidget) layout.getChildAt(i);
if (widget != null) {
Bitmap preview = data.generatedImages.get(i);
widget.applyPreview(new FastBitmapDrawable(preview), i);
}
}
layout.createHardwareLayer();
invalidate();
// Update all thread priorities
Iterator<AppsCustomizeAsyncTask> iter = mRunningTasks.iterator();
while (iter.hasNext()) {
AppsCustomizeAsyncTask task = (AppsCustomizeAsyncTask) iter.next();
int pageIndex = task.page;
task.setThreadPriority(getThreadPriorityForPage(pageIndex));
}
} finally {
data.cleanup(false);
}
}
@Override
public void syncPages() {
removeAllViews();
cancelAllTasks();
Context context = getContext();
for (int j = 0; j < mNumWidgetPages; ++j) {
PagedViewGridLayout layout = new PagedViewGridLayout(context, mWidgetCountX,
mWidgetCountY);
setupPage(layout);
addView(layout, new PagedView.LayoutParams(LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT));
}
for (int i = 0; i < mNumAppsPages; ++i) {
PagedViewCellLayout layout = new PagedViewCellLayout(context);
setupPage(layout);
addView(layout);
}
}
@Override
public void syncPageItems(int page, boolean immediate) {
if (page < mNumAppsPages) {
syncAppsPageItems(page, immediate);
} else {
syncWidgetPageItems(page, immediate);
}
}
// We want our pages to be z-ordered such that the further a page is to the left, the higher
// it is in the z-order. This is important to insure touch events are handled correctly.
View getPageAt(int index) {
return getChildAt(indexToPage(index));
}
@Override
protected int indexToPage(int index) {
return getChildCount() - index - 1;
}
// In apps customize, we have a scrolling effect which emulates pulling cards off of a stack.
@Override
protected void screenScrolled(int screenCenter) {
super.screenScrolled(screenCenter);
for (int i = 0; i < getChildCount(); i++) {
View v = getPageAt(i);
if (v != null) {
float scrollProgress = getScrollProgress(screenCenter, v, i);
float interpolatedProgress =
mZInterpolator.getInterpolation(Math.abs(Math.min(scrollProgress, 0)));
float scale = (1 - interpolatedProgress) +
interpolatedProgress * TRANSITION_SCALE_FACTOR;
float translationX = Math.min(0, scrollProgress) * v.getMeasuredWidth();
float alpha;
if (scrollProgress < 0) {
alpha = scrollProgress < 0 ? mAlphaInterpolator.getInterpolation(
1 - Math.abs(scrollProgress)) : 1.0f;
} else {
// On large screens we need to fade the page as it nears its leftmost position
alpha = mLeftScreenAlphaInterpolator.getInterpolation(1 - scrollProgress);
}
v.setCameraDistance(mDensity * CAMERA_DISTANCE);
int pageWidth = v.getMeasuredWidth();
int pageHeight = v.getMeasuredHeight();
if (PERFORM_OVERSCROLL_ROTATION) {
if (i == 0 && scrollProgress < 0) {
// Overscroll to the left
v.setPivotX(TRANSITION_PIVOT * pageWidth);
v.setRotationY(-TRANSITION_MAX_ROTATION * scrollProgress);
scale = 1.0f;
alpha = 1.0f;
// On the first page, we don't want the page to have any lateral motion
translationX = 0;
} else if (i == getChildCount() - 1 && scrollProgress > 0) {
// Overscroll to the right
v.setPivotX((1 - TRANSITION_PIVOT) * pageWidth);
v.setRotationY(-TRANSITION_MAX_ROTATION * scrollProgress);
scale = 1.0f;
alpha = 1.0f;
// On the last page, we don't want the page to have any lateral motion.
translationX = 0;
} else {
v.setPivotY(pageHeight / 2.0f);
v.setPivotX(pageWidth / 2.0f);
v.setRotationY(0f);
}
}
v.setTranslationX(translationX);
v.setScaleX(scale);
v.setScaleY(scale);
v.setAlpha(alpha);
// If the view has 0 alpha, we set it to be invisible so as to prevent
// it from accepting touches
if (alpha == 0) {
v.setVisibility(INVISIBLE);
} else if (v.getVisibility() != VISIBLE) {
v.setVisibility(VISIBLE);
}
}
}
}
protected void overScroll(float amount) {
acceleratedOverScroll(amount);
}
/**
* Used by the parent to get the content width to set the tab bar to
* @return
*/
public int getPageContentWidth() {
return mContentWidth;
}
@Override
protected void onPageEndMoving() {
super.onPageEndMoving();
mForceDrawAllChildrenNextFrame = true;
// We reset the save index when we change pages so that it will be recalculated on next
// rotation
mSaveInstanceStateItemIndex = -1;
}
/*
* AllAppsView implementation
*/
@Override
public void setup(Launcher launcher, DragController dragController) {
mLauncher = launcher;
mDragController = dragController;
}
@Override
public void zoom(float zoom, boolean animate) {
// TODO-APPS_CUSTOMIZE: Call back to mLauncher.zoomed()
}
@Override
public boolean isVisible() {
return (getVisibility() == VISIBLE);
}
@Override
public boolean isAnimating() {
return false;
}
/**
* We should call thise method whenever the core data changes (mApps, mWidgets) so that we can
* appropriately determine when to invalidate the PagedView page data. In cases where the data
* has yet to be set, we can requestLayout() and wait for onDataReady() to be called in the
* next onMeasure() pass, which will trigger an invalidatePageData() itself.
*/
private void invalidateOnDataChange() {
if (!isDataReady()) {
// The next layout pass will trigger data-ready if both widgets and apps are set, so
// request a layout to trigger the page data when ready.
requestLayout();
} else {
cancelAllTasks();
invalidatePageData();
}
}
@Override
public void setApps(ArrayList<ApplicationInfo> list) {
mApps = list;
Collections.sort(mApps, LauncherModel.APP_NAME_COMPARATOR);
updatePageCounts();
invalidateOnDataChange();
}
private void addAppsWithoutInvalidate(ArrayList<ApplicationInfo> list) {
// We add it in place, in alphabetical order
int count = list.size();
for (int i = 0; i < count; ++i) {
ApplicationInfo info = list.get(i);
int index = Collections.binarySearch(mApps, info, LauncherModel.APP_NAME_COMPARATOR);
if (index < 0) {
mApps.add(-(index + 1), info);
}
}
}
@Override
public void addApps(ArrayList<ApplicationInfo> list) {
addAppsWithoutInvalidate(list);
updatePageCounts();
invalidateOnDataChange();
}
private int findAppByComponent(List<ApplicationInfo> list, ApplicationInfo item) {
ComponentName removeComponent = item.intent.getComponent();
int length = list.size();
for (int i = 0; i < length; ++i) {
ApplicationInfo info = list.get(i);
if (info.intent.getComponent().equals(removeComponent)) {
return i;
}
}
return -1;
}
private void removeAppsWithoutInvalidate(ArrayList<ApplicationInfo> list) {
// loop through all the apps and remove apps that have the same component
int length = list.size();
for (int i = 0; i < length; ++i) {
ApplicationInfo info = list.get(i);
int removeIndex = findAppByComponent(mApps, info);
if (removeIndex > -1) {
mApps.remove(removeIndex);
}
}
}
@Override
public void removeApps(ArrayList<ApplicationInfo> list) {
removeAppsWithoutInvalidate(list);
updatePageCounts();
invalidateOnDataChange();
}
@Override
public void updateApps(ArrayList<ApplicationInfo> list) {
// We remove and re-add the updated applications list because it's properties may have
// changed (ie. the title), and this will ensure that the items will be in their proper
// place in the list.
removeAppsWithoutInvalidate(list);
addAppsWithoutInvalidate(list);
updatePageCounts();
invalidateOnDataChange();
}
@Override
public void reset() {
// If we have reset, then we should not continue to restore the previous state
mSaveInstanceStateItemIndex = -1;
AppsCustomizeTabHost tabHost = getTabHost();
String tag = tabHost.getCurrentTabTag();
if (tag != null) {
if (!tag.equals(tabHost.getTabTagForContentType(ContentType.Applications))) {
tabHost.setCurrentTabFromContent(ContentType.Applications);
}
}
if (mCurrentPage != 0) {
invalidatePageData(0);
}
}
private AppsCustomizeTabHost getTabHost() {
return (AppsCustomizeTabHost) mLauncher.findViewById(R.id.apps_customize_pane);
}
@Override
public void dumpState() {
// TODO: Dump information related to current list of Applications, Widgets, etc.
ApplicationInfo.dumpApplicationInfoList(TAG, "mApps", mApps);
dumpAppWidgetProviderInfoList(TAG, "mWidgets", mWidgets);
}
private void dumpAppWidgetProviderInfoList(String tag, String label,
ArrayList<Object> list) {
Log.d(tag, label + " size=" + list.size());
for (Object i: list) {
if (i instanceof AppWidgetProviderInfo) {
AppWidgetProviderInfo info = (AppWidgetProviderInfo) i;
Log.d(tag, " label=\"" + info.label + "\" previewImage=" + info.previewImage
+ " resizeMode=" + info.resizeMode + " configure=" + info.configure
+ " initialLayout=" + info.initialLayout
+ " minWidth=" + info.minWidth + " minHeight=" + info.minHeight);
} else if (i instanceof ResolveInfo) {
ResolveInfo info = (ResolveInfo) i;
Log.d(tag, " label=\"" + info.loadLabel(mPackageManager) + "\" icon="
+ info.icon);
}
}
}
@Override
public void surrender() {
// TODO: If we are in the middle of any process (ie. for holographic outlines, etc) we
// should stop this now.
// Stop all background tasks
cancelAllTasks();
}
@Override
public void iconPressed(PagedViewIcon icon) {
// Reset the previously pressed icon and store a reference to the pressed icon so that
// we can reset it on return to Launcher (in Launcher.onResume())
if (mPressedIcon != null) {
mPressedIcon.resetDrawableState();
}
mPressedIcon = icon;
}
public void resetDrawableState() {
if (mPressedIcon != null) {
mPressedIcon.resetDrawableState();
mPressedIcon = null;
}
}
/*
* We load an extra page on each side to prevent flashes from scrolling and loading of the
* widget previews in the background with the AsyncTasks.
*/
final static int sLookBehindPageCount = 2;
final static int sLookAheadPageCount = 2;
protected int getAssociatedLowerPageBound(int page) {
final int count = getChildCount();
int windowSize = Math.min(count, sLookBehindPageCount + sLookAheadPageCount + 1);
int windowMinIndex = Math.max(Math.min(page - sLookBehindPageCount, count - windowSize), 0);
return windowMinIndex;
}
protected int getAssociatedUpperPageBound(int page) {
final int count = getChildCount();
int windowSize = Math.min(count, sLookBehindPageCount + sLookAheadPageCount + 1);
int windowMaxIndex = Math.min(Math.max(page + sLookAheadPageCount, windowSize - 1),
count - 1);
return windowMaxIndex;
}
@Override
protected String getCurrentPageDescription() {
int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage;
int stringId = R.string.default_scroll_format;
int count = 0;
if (page < mNumAppsPages) {
stringId = R.string.apps_customize_apps_scroll_format;
count = mNumAppsPages;
} else {
page -= mNumAppsPages;
stringId = R.string.apps_customize_widgets_scroll_format;
count = mNumWidgetPages;
}
return String.format(getContext().getString(stringId), page + 1, count);
}
}