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/*
* Copyright (C) 2010 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.systemui.statusbar.tablet;
import java.util.ArrayList;
import java.util.List;
import android.animation.Animator;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.app.ActivityManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader.TileMode;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Slog;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.android.systemui.R;
public class RecentAppsPanel extends RelativeLayout implements StatusBarPanel, OnItemClickListener {
private static final int GLOW_PADDING = 15;
private static final String TAG = "RecentAppsPanel";
private static final boolean DEBUG = TabletStatusBar.DEBUG;
private static final int DISPLAY_TASKS = 20;
private static final int MAX_TASKS = DISPLAY_TASKS + 1; // allow extra for non-apps
private TabletStatusBar mBar;
private ArrayList<ActivityDescription> mActivityDescriptions;
private int mIconDpi;
private View mRecentsScrim;
private View mRecentsGlowView;
private ListView mRecentsContainer;
private Bitmap mGlowBitmap;
private boolean mShowing;
private Choreographer mChoreo;
private View mRecentsDismissButton;
private ActvityDescriptionAdapter mListAdapter;
protected int mLastVisibleItem;
static class ActivityDescription {
int id;
Bitmap thumbnail; // generated by Activity.onCreateThumbnail()
Drawable icon; // application package icon
String label; // application package label
CharSequence description; // generated by Activity.onCreateDescription()
Intent intent; // launch intent for application
Matrix matrix; // arbitrary rotation matrix to correct orientation
String packageName; // used to override animations (see onClick())
int position; // position in list
public ActivityDescription(Bitmap _thumbnail,
Drawable _icon, String _label, CharSequence _desc, Intent _intent,
int _id, int _pos, String _packageName)
{
thumbnail = _thumbnail;
icon = _icon;
label = _label;
description = _desc;
intent = _intent;
id = _id;
position = _pos;
packageName = _packageName;
}
};
/* package */ final static class ViewHolder {
private ImageView thumbnailView;
private ImageView iconView;
private TextView labelView;
private TextView descriptionView;
private ActivityDescription activityDescription;
}
/* package */ final class ActvityDescriptionAdapter extends BaseAdapter {
private LayoutInflater mInflater;
public ActvityDescriptionAdapter(Context context) {
mInflater = LayoutInflater.from(context);
}
public int getCount() {
return mActivityDescriptions != null ? mActivityDescriptions.size() : 0;
}
public Object getItem(int position) {
return position; // we only need the index
}
public long getItemId(int position) {
return position; // we just need something unique for this position
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.status_bar_recent_item, null);
holder = new ViewHolder();
holder.thumbnailView = (ImageView) convertView.findViewById(R.id.app_thumbnail);
holder.iconView = (ImageView) convertView.findViewById(R.id.app_icon);
holder.labelView = (TextView) convertView.findViewById(R.id.app_label);
holder.descriptionView = (TextView) convertView.findViewById(R.id.app_description);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
// activityId is reverse since most recent appears at the bottom...
final int activityId = mActivityDescriptions.size() - position - 1;
final ActivityDescription activityDescription = mActivityDescriptions.get(activityId);
final Bitmap thumb = activityDescription.thumbnail;
holder.thumbnailView.setImageBitmap(compositeBitmap(mGlowBitmap, thumb));
holder.iconView.setImageDrawable(activityDescription.icon);
holder.labelView.setText(activityDescription.label);
holder.descriptionView.setText(activityDescription.description);
holder.thumbnailView.setTag(activityDescription);
holder.activityDescription = activityDescription;
return convertView;
}
}
public boolean isInContentArea(int x, int y) {
// use mRecentsContainer's exact bounds to determine horizontal position
final int l = mRecentsContainer.getLeft();
final int r = mRecentsContainer.getRight();
// use surrounding mRecentsGlowView's position in parent determine vertical bounds
final int t = mRecentsGlowView.getTop();
final int b = mRecentsGlowView.getBottom();
return x >= l && x < r && y >= t && y < b;
}
public void show(boolean show, boolean animate) {
if (animate) {
if (mShowing != show) {
mShowing = show;
if (show) {
setVisibility(View.VISIBLE);
}
mChoreo.startAnimation(show);
}
} else {
mShowing = show;
setVisibility(show ? View.VISIBLE : View.GONE);
mChoreo.jumpTo(show);
}
}
/**
* We need to be aligned at the bottom. LinearLayout can't do this, so instead,
* let LinearLayout do all the hard work, and then shift everything down to the bottom.
*/
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
super.onLayout(changed, l, t, r, b);
mChoreo.setPanelHeight(mRecentsContainer.getHeight());
}
/**
* Whether the panel is showing, or, if it's animating, whether it will be
* when the animation is done.
*/
public boolean isShowing() {
return mShowing;
}
private static class Choreographer implements Animator.AnimatorListener {
// should group this into a multi-property animation
private static final int OPEN_DURATION = 136;
private static final int CLOSE_DURATION = 250;
boolean mVisible;
int mPanelHeight;
View mRootView;
View mScrimView;
View mContentView;
AnimatorSet mContentAnim;
// the panel will start to appear this many px from the end
final int HYPERSPACE_OFFRAMP = 200;
public Choreographer(View root, View scrim, View content) {
mRootView = root;
mScrimView = scrim;
mContentView = content;
}
void createAnimation(boolean appearing) {
float start, end;
if (DEBUG) Log.e(TAG, "createAnimation()", new Exception());
// 0: on-screen
// height: off-screen
float y = mContentView.getTranslationY();
if (appearing) {
// we want to go from near-the-top to the top, unless we're half-open in the right
// general vicinity
start = (y < HYPERSPACE_OFFRAMP) ? y : HYPERSPACE_OFFRAMP;
end = 0;
} else {
start = y;
end = y + HYPERSPACE_OFFRAMP;
}
Animator posAnim = ObjectAnimator.ofFloat(mContentView, "translationY",
start, end);
posAnim.setInterpolator(appearing
? new android.view.animation.DecelerateInterpolator(2.5f)
: new android.view.animation.AccelerateInterpolator(2.5f));
Animator glowAnim = ObjectAnimator.ofFloat(mContentView, "alpha",
mContentView.getAlpha(), appearing ? 1.0f : 0.0f);
glowAnim.setInterpolator(appearing
? new android.view.animation.AccelerateInterpolator(1.0f)
: new android.view.animation.DecelerateInterpolator(1.0f));
Animator bgAnim = ObjectAnimator.ofInt(mScrimView.getBackground(),
"alpha", appearing ? 0 : 255, appearing ? 255 : 0);
mContentAnim = new AnimatorSet();
mContentAnim
.play(bgAnim)
.with(glowAnim)
.with(posAnim);
mContentAnim.setDuration(appearing ? OPEN_DURATION : CLOSE_DURATION);
mContentAnim.addListener(this);
}
void startAnimation(boolean appearing) {
if (DEBUG) Slog.d(TAG, "startAnimation(appearing=" + appearing + ")");
createAnimation(appearing);
mContentView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
mContentAnim.start();
mVisible = appearing;
}
void jumpTo(boolean appearing) {
mContentView.setTranslationY(appearing ? 0 : mPanelHeight);
}
public void setPanelHeight(int h) {
if (DEBUG) Slog.d(TAG, "panelHeight=" + h);
mPanelHeight = h;
}
public void onAnimationCancel(Animator animation) {
if (DEBUG) Slog.d(TAG, "onAnimationCancel");
// force this to zero so we close the window
mVisible = false;
}
public void onAnimationEnd(Animator animation) {
if (DEBUG) Slog.d(TAG, "onAnimationEnd");
if (!mVisible) {
mRootView.setVisibility(View.GONE);
}
mContentView.setLayerType(View.LAYER_TYPE_NONE, null);
mContentAnim = null;
}
public void onAnimationRepeat(Animator animation) {
}
public void onAnimationStart(Animator animation) {
}
}
public void setBar(TabletStatusBar bar) {
mBar = bar;
}
public RecentAppsPanel(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public RecentAppsPanel(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
Resources res = context.getResources();
boolean xlarge = (res.getConfiguration().screenLayout
& Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_XLARGE;
mIconDpi = xlarge ? DisplayMetrics.DENSITY_HIGH : res.getDisplayMetrics().densityDpi;
mGlowBitmap = BitmapFactory.decodeResource(res, R.drawable.recents_thumbnail_bg);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// Keep track of the last visible item in the list so we can restore it
// to the bottom when the orientation changes.
int childCount = mRecentsContainer.getChildCount();
if (childCount > 0) {
mLastVisibleItem = mRecentsContainer.getFirstVisiblePosition() + childCount - 1;
View view = mRecentsContainer.getChildAt(childCount - 1);
final int distanceFromBottom = mRecentsContainer.getHeight() - view.getTop();
//final int distanceFromBottom = view.getHeight() + BOTTOM_OFFSET;
// This has to happen post-layout, so run it "in the future"
post(new Runnable() {
public void run() {
mRecentsContainer.setSelectionFromTop(mLastVisibleItem,
mRecentsContainer.getHeight() - distanceFromBottom);
}
});
}
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
LayoutInflater inflater = (LayoutInflater)
mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mRecentsContainer = (ListView) findViewById(R.id.recents_container);
View footer = inflater.inflate(R.layout.status_bar_recent_panel_footer,
mRecentsContainer, false);
mRecentsContainer.setScrollbarFadingEnabled(true);
mRecentsContainer.addFooterView(footer, null, false);
mRecentsContainer.setAdapter(mListAdapter = new ActvityDescriptionAdapter(mContext));
mRecentsContainer.setOnItemClickListener(this);
final int leftPadding = mContext.getResources()
.getDimensionPixelOffset(R.dimen.status_bar_recents_thumbnail_left_margin);
mRecentsContainer.setOverScrollEffectPadding(leftPadding, 0);
mRecentsGlowView = findViewById(R.id.recents_glow);
mRecentsScrim = (View) findViewById(R.id.recents_bg_protect);
mChoreo = new Choreographer(this, mRecentsScrim, mRecentsGlowView);
mRecentsDismissButton = findViewById(R.id.recents_dismiss_button);
mRecentsDismissButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
hide(true);
}
});
// In order to save space, we make the background texture repeat in the Y direction
if (mRecentsScrim != null && mRecentsScrim.getBackground() instanceof BitmapDrawable) {
((BitmapDrawable) mRecentsScrim.getBackground()).setTileModeY(TileMode.REPEAT);
}
}
@Override
protected void onVisibilityChanged(View changedView, int visibility) {
super.onVisibilityChanged(changedView, visibility);
if (DEBUG) Log.v(TAG, "onVisibilityChanged(" + changedView + ", " + visibility + ")");
if (visibility == View.VISIBLE && changedView == this) {
refreshApplicationList();
post(new Runnable() {
public void run() {
mRecentsContainer.setSelection(mActivityDescriptions.size() - 1);
}
});
}
}
private Drawable getFullResDefaultActivityIcon() {
return getFullResIcon(Resources.getSystem(),
com.android.internal.R.mipmap.sym_def_app_icon);
}
private Drawable getFullResIcon(Resources resources, int iconId) {
return resources.getDrawableForDensity(iconId, mIconDpi);
}
private Drawable getFullResIcon(ResolveInfo info, PackageManager packageManager) {
Resources resources;
try {
resources = packageManager.getResourcesForApplication(
info.activityInfo.applicationInfo);
} catch (PackageManager.NameNotFoundException e) {
resources = null;
}
if (resources != null) {
int iconId = info.activityInfo.getIconResource();
if (iconId != 0) {
return getFullResIcon(resources, iconId);
}
}
return getFullResDefaultActivityIcon();
}
private ArrayList<ActivityDescription> getRecentTasks() {
ArrayList<ActivityDescription> activityDescriptions = new ArrayList<ActivityDescription>();
final PackageManager pm = mContext.getPackageManager();
final ActivityManager am = (ActivityManager)
mContext.getSystemService(Context.ACTIVITY_SERVICE);
final List<ActivityManager.RecentTaskInfo> recentTasks =
am.getRecentTasks(MAX_TASKS, ActivityManager.RECENT_IGNORE_UNAVAILABLE
| ActivityManager.TASKS_GET_THUMBNAILS);
ActivityInfo homeInfo = new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_HOME)
.resolveActivityInfo(pm, 0);
int numTasks = recentTasks.size();
// skip the first activity - assume it's either the home screen or the current app.
final int first = 1;
for (int i = first, index = 0; i < numTasks && (index < MAX_TASKS); ++i) {
final ActivityManager.RecentTaskInfo recentInfo = recentTasks.get(i);
Intent intent = new Intent(recentInfo.baseIntent);
if (recentInfo.origActivity != null) {
intent.setComponent(recentInfo.origActivity);
}
// Skip the current home activity.
if (homeInfo != null
&& homeInfo.packageName.equals(intent.getComponent().getPackageName())
&& homeInfo.name.equals(intent.getComponent().getClassName())) {
continue;
}
intent.setFlags((intent.getFlags()&~Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED)
| Intent.FLAG_ACTIVITY_NEW_TASK);
final ResolveInfo resolveInfo = pm.resolveActivity(intent, 0);
if (resolveInfo != null) {
final ActivityInfo info = resolveInfo.activityInfo;
final String title = info.loadLabel(pm).toString();
// Drawable icon = info.loadIcon(pm);
Drawable icon = getFullResIcon(resolveInfo, pm);
int id = recentTasks.get(i).id;
if (title != null && title.length() > 0 && icon != null) {
if (DEBUG) Log.v(TAG, "creating activity desc for id=" + id + ", label=" + title);
ActivityDescription item = new ActivityDescription(
am.getTaskThumbnail(recentInfo.persistentId),
icon, title, recentInfo.description, intent, id,
index, info.packageName);
activityDescriptions.add(item);
++index;
} else {
if (DEBUG) Log.v(TAG, "SKIPPING item " + id);
}
}
}
return activityDescriptions;
}
ActivityDescription findActivityDescription(int id)
{
ActivityDescription desc = null;
for (int i = 0; i < mActivityDescriptions.size(); i++) {
ActivityDescription item = mActivityDescriptions.get(i);
if (item != null && item.id == id) {
desc = item;
break;
}
}
return desc;
}
private void refreshApplicationList() {
mActivityDescriptions = getRecentTasks();
mListAdapter.notifyDataSetInvalidated();
if (mActivityDescriptions.size() > 0) {
mLastVisibleItem = mActivityDescriptions.size() - 1; // scroll to bottom after reloading
updateUiElements(getResources().getConfiguration());
} else {
// Immediately hide this panel
hide(false);
}
}
private Bitmap compositeBitmap(Bitmap background, Bitmap thumbnail) {
Bitmap outBitmap = background.copy(background.getConfig(), true);
if (thumbnail != null) {
Canvas canvas = new Canvas(outBitmap);
Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setAlpha(255);
final int srcWidth = thumbnail.getWidth();
final int srcHeight = thumbnail.getHeight();
canvas.drawBitmap(thumbnail,
new Rect(0, 0, srcWidth-1, srcHeight-1),
new RectF(GLOW_PADDING,
GLOW_PADDING - 7.0f,
outBitmap.getWidth() - GLOW_PADDING + 3.0f,
outBitmap.getHeight() - GLOW_PADDING + 7.0f), paint);
}
return outBitmap;
}
private void updateUiElements(Configuration config) {
final int items = mActivityDescriptions.size();
mRecentsContainer.setVisibility(items > 0 ? View.VISIBLE : View.GONE);
mRecentsGlowView.setVisibility(items > 0 ? View.VISIBLE : View.GONE);
}
private void hide(boolean animate) {
if (!animate) {
setVisibility(View.GONE);
}
mBar.animateCollapse();
}
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
ActivityDescription ad = ((ViewHolder) view.getTag()).activityDescription;
final ActivityManager am = (ActivityManager)
getContext().getSystemService(Context.ACTIVITY_SERVICE);
if (ad.id >= 0) {
// This is an active task; it should just go to the foreground.
am.moveTaskToFront(ad.id, ActivityManager.MOVE_TASK_WITH_HOME);
} else {
Intent intent = ad.intent;
intent.addFlags(Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
| Intent.FLAG_ACTIVITY_TASK_ON_HOME);
if (DEBUG) Log.v(TAG, "Starting activity " + intent);
getContext().startActivity(intent);
}
hide(true);
}
}
|