0b2bd8d11d
New layout for widget picker is still not up to final design, but this change prepares all the backend work Also, remove use of features filter from the picker, since this is being removed from the API Change-Id: I9b332e22cf34b98c20c720602c920d28aed01d6c
480 lines
17 KiB
Java
480 lines
17 KiB
Java
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings;
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import android.graphics.ColorFilter;
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import android.util.DisplayMetrics;
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import com.android.internal.app.AlertActivity;
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import com.android.internal.app.AlertController;
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import android.app.Activity;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.Intent.ShortcutIconResource;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.content.res.Resources;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.PaintFlagsDrawFilter;
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import android.graphics.PixelFormat;
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import android.graphics.Rect;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import android.graphics.drawable.PaintDrawable;
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import android.os.Bundle;
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import android.os.Parcelable;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.BaseAdapter;
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import android.widget.TextView;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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/**
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* Displays a list of all activities matching the incoming
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* {@link Intent#EXTRA_INTENT} query, along with any injected items.
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*/
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public class ActivityPicker extends AlertActivity implements
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DialogInterface.OnClickListener, DialogInterface.OnCancelListener {
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/**
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* Adapter of items that are displayed in this dialog.
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*/
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private PickAdapter mAdapter;
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/**
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* Base {@link Intent} used when building list.
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*/
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private Intent mBaseIntent;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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final Intent intent = getIntent();
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// Read base intent from extras, otherwise assume default
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Parcelable parcel = intent.getParcelableExtra(Intent.EXTRA_INTENT);
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if (parcel instanceof Intent) {
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mBaseIntent = (Intent) parcel;
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} else {
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mBaseIntent = new Intent(Intent.ACTION_MAIN, null);
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mBaseIntent.addCategory(Intent.CATEGORY_DEFAULT);
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}
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// Create dialog parameters
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AlertController.AlertParams params = mAlertParams;
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params.mOnClickListener = this;
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params.mOnCancelListener = this;
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// Use custom title if provided, otherwise default window title
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if (intent.hasExtra(Intent.EXTRA_TITLE)) {
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params.mTitle = intent.getStringExtra(Intent.EXTRA_TITLE);
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} else {
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params.mTitle = getTitle();
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}
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// Build list adapter of pickable items
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List<PickAdapter.Item> items = getItems();
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mAdapter = new PickAdapter(this, items);
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params.mAdapter = mAdapter;
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setupAlert();
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}
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/**
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* Handle clicking of dialog item by passing back
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* {@link #getIntentForPosition(int)} in {@link #setResult(int, Intent)}.
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*/
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public void onClick(DialogInterface dialog, int which) {
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Intent intent = getIntentForPosition(which);
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setResult(Activity.RESULT_OK, intent);
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finish();
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}
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/**
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* Handle canceled dialog by passing back {@link Activity#RESULT_CANCELED}.
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*/
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public void onCancel(DialogInterface dialog) {
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setResult(Activity.RESULT_CANCELED);
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finish();
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}
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/**
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* Build the specific {@link Intent} for a given list position. Convenience
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* method that calls through to {@link PickAdapter.Item#getIntent(Intent)}.
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*/
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protected Intent getIntentForPosition(int position) {
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PickAdapter.Item item = (PickAdapter.Item) mAdapter.getItem(position);
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return item.getIntent(mBaseIntent);
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}
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/**
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* Build and return list of items to be shown in dialog. Default
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* implementation mixes activities matching {@link #mBaseIntent} from
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* {@link #putIntentItems(Intent, List)} with any injected items from
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* {@link Intent#EXTRA_SHORTCUT_NAME}. Override this method in subclasses to
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* change the items shown.
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*/
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protected List<PickAdapter.Item> getItems() {
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PackageManager packageManager = getPackageManager();
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List<PickAdapter.Item> items = new ArrayList<PickAdapter.Item>();
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// Add any injected pick items
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final Intent intent = getIntent();
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ArrayList<String> labels =
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intent.getStringArrayListExtra(Intent.EXTRA_SHORTCUT_NAME);
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ArrayList<ShortcutIconResource> icons =
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intent.getParcelableArrayListExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE);
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if (labels != null && icons != null && labels.size() == icons.size()) {
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for (int i = 0; i < labels.size(); i++) {
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String label = labels.get(i);
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Drawable icon = null;
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try {
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// Try loading icon from requested package
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ShortcutIconResource iconResource = icons.get(i);
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Resources res = packageManager.getResourcesForApplication(
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iconResource.packageName);
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icon = res.getDrawable(res.getIdentifier(
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iconResource.resourceName, null, null));
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} catch (NameNotFoundException e) {
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// Ignore
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}
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items.add(new PickAdapter.Item(this, label, icon));
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}
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}
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// Add any intent items if base was given
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if (mBaseIntent != null) {
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putIntentItems(mBaseIntent, items);
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}
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return items;
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}
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/**
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* Fill the given list with any activities matching the base {@link Intent}.
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*/
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protected void putIntentItems(Intent baseIntent, List<PickAdapter.Item> items) {
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PackageManager packageManager = getPackageManager();
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List<ResolveInfo> list = packageManager.queryIntentActivities(baseIntent,
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0 /* no flags */);
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Collections.sort(list, new ResolveInfo.DisplayNameComparator(packageManager));
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final int listSize = list.size();
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for (int i = 0; i < listSize; i++) {
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ResolveInfo resolveInfo = list.get(i);
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items.add(new PickAdapter.Item(this, packageManager, resolveInfo));
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}
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}
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/**
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* Adapter which shows the set of activities that can be performed for a
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* given {@link Intent}.
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*/
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protected static class PickAdapter extends BaseAdapter {
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/**
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* Item that appears in a {@link PickAdapter} list.
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*/
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public static class Item implements AppWidgetLoader.LabelledItem {
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protected static IconResizer sResizer;
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protected IconResizer getResizer(Context context) {
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if (sResizer == null) {
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final Resources resources = context.getResources();
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int size = (int) resources.getDimension(android.R.dimen.app_icon_size);
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sResizer = new IconResizer(size, size, resources.getDisplayMetrics());
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}
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return sResizer;
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}
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CharSequence label;
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Drawable icon;
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String packageName;
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String className;
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Bundle extras;
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/**
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* Create a list item from given label and icon.
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*/
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Item(Context context, CharSequence label, Drawable icon) {
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this.label = label;
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this.icon = getResizer(context).createIconThumbnail(icon);
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}
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/**
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* Create a list item and fill it with details from the given
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* {@link ResolveInfo} object.
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*/
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Item(Context context, PackageManager pm, ResolveInfo resolveInfo) {
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label = resolveInfo.loadLabel(pm);
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if (label == null && resolveInfo.activityInfo != null) {
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label = resolveInfo.activityInfo.name;
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}
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icon = getResizer(context).createIconThumbnail(resolveInfo.loadIcon(pm));
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packageName = resolveInfo.activityInfo.applicationInfo.packageName;
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className = resolveInfo.activityInfo.name;
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}
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/**
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* Build the {@link Intent} described by this item. If this item
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* can't create a valid {@link android.content.ComponentName}, it will return
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* {@link Intent#ACTION_CREATE_SHORTCUT} filled with the item label.
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*/
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Intent getIntent(Intent baseIntent) {
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Intent intent = new Intent(baseIntent);
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if (packageName != null && className != null) {
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// Valid package and class, so fill details as normal intent
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intent.setClassName(packageName, className);
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if (extras != null) {
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intent.putExtras(extras);
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}
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} else {
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// No valid package or class, so treat as shortcut with label
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intent.setAction(Intent.ACTION_CREATE_SHORTCUT);
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intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, label);
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}
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return intent;
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}
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public CharSequence getLabel() {
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return label;
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}
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}
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private final LayoutInflater mInflater;
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private final List<Item> mItems;
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/**
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* Create an adapter for the given items.
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*/
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public PickAdapter(Context context, List<Item> items) {
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mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
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mItems = items;
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}
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/**
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* {@inheritDoc}
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*/
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public int getCount() {
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return mItems.size();
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}
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/**
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* {@inheritDoc}
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*/
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public Object getItem(int position) {
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return mItems.get(position);
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}
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/**
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* {@inheritDoc}
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*/
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public long getItemId(int position) {
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return position;
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}
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/**
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* {@inheritDoc}
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*/
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public View getView(int position, View convertView, ViewGroup parent) {
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if (convertView == null) {
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convertView = mInflater.inflate(R.layout.pick_item, parent, false);
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}
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Item item = (Item) getItem(position);
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TextView textView = (TextView) convertView;
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textView.setText(item.label);
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textView.setCompoundDrawablesWithIntrinsicBounds(item.icon, null, null, null);
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return convertView;
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}
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}
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/**
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* Utility class to resize icons to match default icon size. Code is mostly
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* borrowed from Launcher.
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*/
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private static class IconResizer {
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private final int mIconWidth;
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private final int mIconHeight;
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private final DisplayMetrics mMetrics;
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private final Rect mOldBounds = new Rect();
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private final Canvas mCanvas = new Canvas();
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public IconResizer(int width, int height, DisplayMetrics metrics) {
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mCanvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.DITHER_FLAG,
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Paint.FILTER_BITMAP_FLAG));
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mMetrics = metrics;
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mIconWidth = width;
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mIconHeight = height;
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}
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/**
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* Returns a Drawable representing the thumbnail of the specified Drawable.
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* The size of the thumbnail is defined by the dimension
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* android.R.dimen.launcher_application_icon_size.
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*
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* This method is not thread-safe and should be invoked on the UI thread only.
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*
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* @param icon The icon to get a thumbnail of.
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*
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* @return A thumbnail for the specified icon or the icon itself if the
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* thumbnail could not be created.
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*/
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public Drawable createIconThumbnail(Drawable icon) {
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int width = mIconWidth;
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int height = mIconHeight;
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if (icon == null) {
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return new EmptyDrawable(width, height);
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}
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try {
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if (icon instanceof PaintDrawable) {
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PaintDrawable painter = (PaintDrawable) icon;
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painter.setIntrinsicWidth(width);
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painter.setIntrinsicHeight(height);
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} else if (icon instanceof BitmapDrawable) {
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// Ensure the bitmap has a density.
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BitmapDrawable bitmapDrawable = (BitmapDrawable) icon;
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Bitmap bitmap = bitmapDrawable.getBitmap();
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if (bitmap.getDensity() == Bitmap.DENSITY_NONE) {
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bitmapDrawable.setTargetDensity(mMetrics);
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}
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}
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int iconWidth = icon.getIntrinsicWidth();
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int iconHeight = icon.getIntrinsicHeight();
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if (iconWidth > 0 && iconHeight > 0) {
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if (width < iconWidth || height < iconHeight) {
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final float ratio = (float) iconWidth / iconHeight;
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if (iconWidth > iconHeight) {
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height = (int) (width / ratio);
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} else if (iconHeight > iconWidth) {
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width = (int) (height * ratio);
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}
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final Bitmap.Config c = icon.getOpacity() != PixelFormat.OPAQUE ?
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Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565;
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final Bitmap thumb = Bitmap.createBitmap(mIconWidth, mIconHeight, c);
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final Canvas canvas = mCanvas;
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canvas.setBitmap(thumb);
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// Copy the old bounds to restore them later
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// If we were to do oldBounds = icon.getBounds(),
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// the call to setBounds() that follows would
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// change the same instance and we would lose the
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// old bounds
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mOldBounds.set(icon.getBounds());
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final int x = (mIconWidth - width) / 2;
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final int y = (mIconHeight - height) / 2;
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icon.setBounds(x, y, x + width, y + height);
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icon.draw(canvas);
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icon.setBounds(mOldBounds);
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//noinspection deprecation
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icon = new BitmapDrawable(thumb);
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((BitmapDrawable) icon).setTargetDensity(mMetrics);
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canvas.setBitmap(null);
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} else if (iconWidth < width && iconHeight < height) {
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final Bitmap.Config c = Bitmap.Config.ARGB_8888;
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final Bitmap thumb = Bitmap.createBitmap(mIconWidth, mIconHeight, c);
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final Canvas canvas = mCanvas;
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canvas.setBitmap(thumb);
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mOldBounds.set(icon.getBounds());
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final int x = (width - iconWidth) / 2;
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final int y = (height - iconHeight) / 2;
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icon.setBounds(x, y, x + iconWidth, y + iconHeight);
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icon.draw(canvas);
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icon.setBounds(mOldBounds);
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//noinspection deprecation
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icon = new BitmapDrawable(thumb);
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((BitmapDrawable) icon).setTargetDensity(mMetrics);
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canvas.setBitmap(null);
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}
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}
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} catch (Throwable t) {
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icon = new EmptyDrawable(width, height);
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}
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return icon;
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}
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}
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private static class EmptyDrawable extends Drawable {
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private final int mWidth;
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private final int mHeight;
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EmptyDrawable(int width, int height) {
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mWidth = width;
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mHeight = height;
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}
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@Override
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public int getIntrinsicWidth() {
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return mWidth;
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}
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@Override
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public int getIntrinsicHeight() {
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return mHeight;
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}
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@Override
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public int getMinimumWidth() {
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return mWidth;
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}
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@Override
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public int getMinimumHeight() {
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return mHeight;
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}
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@Override
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public void draw(Canvas canvas) {
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}
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@Override
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public void setAlpha(int alpha) {
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}
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@Override
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public void setColorFilter(ColorFilter cf) {
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}
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@Override
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public int getOpacity() {
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return PixelFormat.TRANSLUCENT;
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}
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}
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}
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