/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher3;
import android.animation.LayoutTransition;
import android.annotation.TargetApi;
import android.app.ActionBar;
import android.app.Activity;
import android.app.WallpaperManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.database.Cursor;
import android.database.DataSetObserver;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Point;
import android.graphics.PorterDuff;
import android.graphics.RectF;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.Manifest;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Process;
import android.provider.MediaStore;
import android.util.Log;
import android.util.Pair;
import android.view.ActionMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLayoutChangeListener;
import android.view.ViewGroup;
import android.view.ViewPropertyAnimator;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.WindowManager;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.FrameLayout;
import android.widget.HorizontalScrollView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.android.gallery3d.common.BitmapCropTask;
import com.android.gallery3d.common.BitmapUtils;
import com.android.gallery3d.common.Utils;
import com.android.launcher3.util.Thunk;
import com.android.launcher3.util.WallpaperUtils;
import com.android.photos.BitmapRegionTileSource;
import com.android.photos.BitmapRegionTileSource.BitmapSource;
import com.android.photos.views.TiledImageRenderer.TileSource;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
public class WallpaperPickerActivity extends WallpaperCropActivity {
static final String TAG = "Launcher.WallpaperPickerActivity";
public static final int IMAGE_PICK = 5;
public static final int PICK_WALLPAPER_THIRD_PARTY_ACTIVITY = 6;
private static final String TEMP_WALLPAPER_TILES = "TEMP_WALLPAPER_TILES";
private static final String SELECTED_INDEX = "SELECTED_INDEX";
private static final int FLAG_POST_DELAY_MILLIS = 200;
@Thunk View mSelectedTile;
@Thunk boolean mIgnoreNextTap;
@Thunk OnClickListener mThumbnailOnClickListener;
@Thunk LinearLayout mWallpapersView;
@Thunk HorizontalScrollView mWallpaperScrollContainer;
@Thunk View mWallpaperStrip;
@Thunk ActionMode.Callback mActionModeCallback;
@Thunk ActionMode mActionMode;
@Thunk View.OnLongClickListener mLongClickListener;
ArrayList<Uri> mTempWallpaperTiles = new ArrayList<Uri>();
private SavedWallpaperImages mSavedImages;
@Thunk int mSelectedIndex = -1;
public static abstract class WallpaperTileInfo {
protected View mView;
public Drawable mThumb;
public void setView(View v) {
mView = v;
}
public void onClick(WallpaperPickerActivity a) {}
public void onSave(WallpaperPickerActivity a) {}
public void onDelete(WallpaperPickerActivity a) {}
public boolean isSelectable() { return false; }
public boolean isNamelessWallpaper() { return false; }
public void onIndexUpdated(CharSequence label) {
if (isNamelessWallpaper()) {
mView.setContentDescription(label);
}
}
}
public static class PickImageInfo extends WallpaperTileInfo {
@Override
public void onClick(WallpaperPickerActivity a) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
a.startActivityForResultSafely(intent, IMAGE_PICK);
}
}
public static class UriWallpaperInfo extends WallpaperTileInfo {
private Uri mUri;
public UriWallpaperInfo(Uri uri) {
mUri = uri;
}
@Override
public void onClick(final WallpaperPickerActivity a) {
a.setWallpaperButtonEnabled(false);
final BitmapRegionTileSource.UriBitmapSource bitmapSource =
new BitmapRegionTileSource.UriBitmapSource(a.getContext(), mUri);
a.setCropViewTileSource(bitmapSource, true, false, null, new Runnable() {
@Override
public void run() {
if (bitmapSource.getLoadingState() == BitmapSource.State.LOADED) {
a.selectTile(mView);
a.setWallpaperButtonEnabled(true);
} else {
ViewGroup parent = (ViewGroup) mView.getParent();
if (parent != null) {
parent.removeView(mView);
Toast.makeText(a.getContext(), R.string.image_load_fail,
Toast.LENGTH_SHORT).show();
}
}
}
});
}
@Override
public void onSave(final WallpaperPickerActivity a) {
boolean finishActivityWhenDone = true;
BitmapCropTask.OnBitmapCroppedHandler h = new BitmapCropTask.OnBitmapCroppedHandler() {
public void onBitmapCropped(byte[] imageBytes) {
Point thumbSize = getDefaultThumbnailSize(a.getResources());
// rotation is set to 0 since imageBytes has already been correctly rotated
Bitmap thumb = createThumbnail(
thumbSize, null, null, imageBytes, null, 0, 0, true);
a.getSavedImages().writeImage(thumb, imageBytes);
}
};
a.cropImageAndSetWallpaper(mUri, h, finishActivityWhenDone);
}
@Override
public boolean isSelectable() {
return true;
}
@Override
public boolean isNamelessWallpaper() {
return true;
}
}
public static class FileWallpaperInfo extends WallpaperTileInfo {
private File mFile;
public FileWallpaperInfo(File target, Drawable thumb) {
mFile = target;
mThumb = thumb;
}
@Override
public void onClick(final WallpaperPickerActivity a) {
a.setWallpaperButtonEnabled(false);
final BitmapRegionTileSource.UriBitmapSource bitmapSource =
new BitmapRegionTileSource.UriBitmapSource(a.getContext(), Uri.fromFile(mFile));
a.setCropViewTileSource(bitmapSource, false, true, null, new Runnable() {
@Override
public void run() {
if (bitmapSource.getLoadingState() == BitmapSource.State.LOADED) {
a.setWallpaperButtonEnabled(true);
}
}
});
}
@Override
public void onSave(WallpaperPickerActivity a) {
a.setWallpaper(Uri.fromFile(mFile), true);
}
@Override
public boolean isSelectable() {
return true;
}
@Override
public boolean isNamelessWallpaper() {
return true;
}
}
public static class ResourceWallpaperInfo extends WallpaperTileInfo {
private Resources mResources;
private int mResId;
public ResourceWallpaperInfo(Resources res, int resId, Drawable thumb) {
mResources = res;
mResId = resId;
mThumb = thumb;
}
@Override
public void onClick(final WallpaperPickerActivity a) {
a.setWallpaperButtonEnabled(false);
final BitmapRegionTileSource.ResourceBitmapSource bitmapSource =
new BitmapRegionTileSource.ResourceBitmapSource(mResources, mResId);
a.setCropViewTileSource(bitmapSource, false, false, new CropViewScaleProvider() {
@Override
public float getScale(TileSource src) {
Point wallpaperSize = WallpaperUtils.getDefaultWallpaperSize(
a.getResources(), a.getWindowManager());
RectF crop = Utils.getMaxCropRect(
src.getImageWidth(), src.getImageHeight(),
wallpaperSize.x, wallpaperSize.y, false);
return wallpaperSize.x / crop.width();
}
}, new Runnable() {
@Override
public void run() {
if (bitmapSource.getLoadingState() == BitmapSource.State.LOADED) {
a.setWallpaperButtonEnabled(true);
}
}
});
}
@Override
public void onSave(WallpaperPickerActivity a) {
boolean finishActivityWhenDone = true;
a.cropImageAndSetWallpaper(mResources, mResId, finishActivityWhenDone);
}
@Override
public boolean isSelectable() {
return true;
}
@Override
public boolean isNamelessWallpaper() {
return true;
}
}
@TargetApi(Build.VERSION_CODES.KITKAT)
public static class DefaultWallpaperInfo extends WallpaperTileInfo {
public DefaultWallpaperInfo(Drawable thumb) {
mThumb = thumb;
}
@Override
public void onClick(WallpaperPickerActivity a) {
CropView c = a.getCropView();
Drawable defaultWallpaper = WallpaperManager.getInstance(a.getContext())
.getBuiltInDrawable(c.getWidth(), c.getHeight(), false, 0.5f, 0.5f);
if (defaultWallpaper == null) {
Log.w(TAG, "Null default wallpaper encountered.");
c.setTileSource(null, null);
return;
}
LoadRequest req = new LoadRequest();
req.moveToLeft = false;
req.touchEnabled = false;
req.scaleProvider = new CropViewScaleProvider() {
@Override
public float getScale(TileSource src) {
return 1f;
}
};
req.result = new DrawableTileSource(a.getContext(),
defaultWallpaper, DrawableTileSource.MAX_PREVIEW_SIZE);
a.onLoadRequestComplete(req, true);
}
@Override
public void onSave(WallpaperPickerActivity a) {
try {
WallpaperManager.getInstance(a.getContext()).clear();
a.setResult(Activity.RESULT_OK);
} catch (IOException e) {
Log.w("Setting wallpaper to default threw exception", e);
}
a.finish();
}
@Override
public boolean isSelectable() {
return true;
}
@Override
public boolean isNamelessWallpaper() {
return true;
}
}
/**
* shows the system wallpaper behind the window and hides the {@link
* #mCropView} if visible
* @param visible should the system wallpaper be shown
*/
protected void setSystemWallpaperVisiblity(final boolean visible) {
// hide our own wallpaper preview if necessary
if(!visible) {
mCropView.setVisibility(View.VISIBLE);
} else {
changeWallpaperFlags(visible);
}
// the change of the flag must be delayed in order to avoid flickering,
// a simple post / double post does not suffice here
mCropView.postDelayed(new Runnable() {
@Override
public void run() {
if(!visible) {
changeWallpaperFlags(visible);
} else {
mCropView.setVisibility(View.INVISIBLE);
}
}
}, FLAG_POST_DELAY_MILLIS);
}
@Thunk void changeWallpaperFlags(boolean visible) {
int desiredWallpaperFlag = visible ? WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER : 0;
int currentWallpaperFlag = getWindow().getAttributes().flags
& WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
if (desiredWallpaperFlag != currentWallpaperFlag) {
getWindow().setFlags(desiredWallpaperFlag,
WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER);
}
}
@Override
protected void onLoadRequestComplete(LoadRequest req, boolean success) {
super.onLoadRequestComplete(req, success);
if (success) {
setSystemWallpaperVisiblity(false);
}
}
// called by onCreate; this is subclassed to overwrite WallpaperCropActivity
protected void init() {
setContentView(R.layout.wallpaper_picker);
mCropView = (CropView) findViewById(R.id.cropView);
mCropView.setVisibility(View.INVISIBLE);
mProgressView = findViewById(R.id.loading);
mWallpaperScrollContainer = (HorizontalScrollView) findViewById(R.id.wallpaper_scroll_container);
mWallpaperStrip = findViewById(R.id.wallpaper_strip);
mCropView.setTouchCallback(new CropView.TouchCallback() {
ViewPropertyAnimator mAnim;
@Override
public void onTouchDown() {
if (mAnim != null) {
mAnim.cancel();
}
if (mWallpaperStrip.getAlpha() == 1f) {
mIgnoreNextTap = true;
}
mAnim = mWallpaperStrip.animate();
mAnim.alpha(0f)
.setDuration(150)
.withEndAction(new Runnable() {
public void run() {
mWallpaperStrip.setVisibility(View.INVISIBLE);
}
});
mAnim.setInterpolator(new AccelerateInterpolator(0.75f));
mAnim.start();
}
@Override
public void onTouchUp() {
mIgnoreNextTap = false;
}
@Override
public void onTap() {
boolean ignoreTap = mIgnoreNextTap;
mIgnoreNextTap = false;
if (!ignoreTap) {
if (mAnim != null) {
mAnim.cancel();
}
mWallpaperStrip.setVisibility(View.VISIBLE);
mAnim = mWallpaperStrip.animate();
mAnim.alpha(1f)
.setDuration(150)
.setInterpolator(new DecelerateInterpolator(0.75f));
mAnim.start();
}
}
});
mThumbnailOnClickListener = new OnClickListener() {
public void onClick(View v) {
if (mActionMode != null) {
// When CAB is up, clicking toggles the item instead
if (v.isLongClickable()) {
mLongClickListener.onLongClick(v);
}
return;
}
setWallpaperButtonEnabled(true);
WallpaperTileInfo info = (WallpaperTileInfo) v.getTag();
if (info.isSelectable() && v.getVisibility() == View.VISIBLE) {
selectTile(v);
}
info.onClick(WallpaperPickerActivity.this);
}
};
mLongClickListener = new View.OnLongClickListener() {
// Called when the user long-clicks on someView
public boolean onLongClick(View view) {
CheckableFrameLayout c = (CheckableFrameLayout) view;
c.toggle();
if (mActionMode != null) {
mActionMode.invalidate();
} else {
// Start the CAB using the ActionMode.Callback defined below
mActionMode = startActionMode(mActionModeCallback);
int childCount = mWallpapersView.getChildCount();
for (int i = 0; i < childCount; i++) {
mWallpapersView.getChildAt(i).setSelected(false);
}
}
return true;
}
};
// Populate the built-in wallpapers
ArrayList<WallpaperTileInfo> wallpapers = findBundledWallpapers();
mWallpapersView = (LinearLayout) findViewById(R.id.wallpaper_list);
SimpleWallpapersAdapter ia = new SimpleWallpapersAdapter(getContext(), wallpapers);
populateWallpapersFromAdapter(mWallpapersView, ia, false);
// Populate the saved wallpapers
mSavedImages = new SavedWallpaperImages(getContext());
mSavedImages.loadThumbnailsAndImageIdList();
populateWallpapersFromAdapter(mWallpapersView, mSavedImages, true);
// Populate the live wallpapers
final LinearLayout liveWallpapersView =
(LinearLayout) findViewById(R.id.live_wallpaper_list);
final LiveWallpaperListAdapter a = new LiveWallpaperListAdapter(getContext());
a.registerDataSetObserver(new DataSetObserver() {
public void onChanged() {
liveWallpapersView.removeAllViews();
populateWallpapersFromAdapter(liveWallpapersView, a, false);
initializeScrollForRtl();
updateTileIndices();
}
});
// Populate the third-party wallpaper pickers
final LinearLayout thirdPartyWallpapersView =
(LinearLayout) findViewById(R.id.third_party_wallpaper_list);
final ThirdPartyWallpaperPickerListAdapter ta =
new ThirdPartyWallpaperPickerListAdapter(getContext());
populateWallpapersFromAdapter(thirdPartyWallpapersView, ta, false);
// Add a tile for the Gallery
LinearLayout masterWallpaperList = (LinearLayout) findViewById(R.id.master_wallpaper_list);
FrameLayout pickImageTile = (FrameLayout) getLayoutInflater().
inflate(R.layout.wallpaper_picker_image_picker_item, masterWallpaperList, false);
masterWallpaperList.addView(pickImageTile, 0);
// Make its background the last photo taken on external storage
Bitmap lastPhoto = getThumbnailOfLastPhoto();
if (lastPhoto != null) {
ImageView galleryThumbnailBg =
(ImageView) pickImageTile.findViewById(R.id.wallpaper_image);
galleryThumbnailBg.setImageBitmap(lastPhoto);
int colorOverlay = getResources().getColor(R.color.wallpaper_picker_translucent_gray);
galleryThumbnailBg.setColorFilter(colorOverlay, PorterDuff.Mode.SRC_ATOP);
}
PickImageInfo pickImageInfo = new PickImageInfo();
pickImageTile.setTag(pickImageInfo);
pickImageInfo.setView(pickImageTile);
pickImageTile.setOnClickListener(mThumbnailOnClickListener);
// Select the first item; wait for a layout pass so that we initialize the dimensions of
// cropView or the defaultWallpaperView first
mCropView.addOnLayoutChangeListener(new OnLayoutChangeListener() {
@Override
public void onLayoutChange(View v, int left, int top, int right, int bottom,
int oldLeft, int oldTop, int oldRight, int oldBottom) {
if ((right - left) > 0 && (bottom - top) > 0) {
if (mSelectedIndex >= 0 && mSelectedIndex < mWallpapersView.getChildCount()) {
mThumbnailOnClickListener.onClick(
mWallpapersView.getChildAt(mSelectedIndex));
setSystemWallpaperVisiblity(false);
}
v.removeOnLayoutChangeListener(this);
}
}
});
updateTileIndices();
// Update the scroll for RTL
initializeScrollForRtl();
// Create smooth layout transitions for when items are deleted
final LayoutTransition transitioner = new LayoutTransition();
transitioner.setDuration(200);
transitioner.setStartDelay(LayoutTransition.CHANGE_DISAPPEARING, 0);
transitioner.setAnimator(LayoutTransition.DISAPPEARING, null);
mWallpapersView.setLayoutTransition(transitioner);
// Action bar
// Show the custom action bar view
final ActionBar actionBar = getActionBar();
actionBar.setCustomView(R.layout.actionbar_set_wallpaper);
actionBar.getCustomView().setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
// Ensure that a tile is slelected and loaded.
if (mSelectedTile != null && mCropView.getTileSource() != null) {
// Prevent user from selecting any new tile.
mWallpaperStrip.setVisibility(View.GONE);
actionBar.hide();
WallpaperTileInfo info = (WallpaperTileInfo) mSelectedTile.getTag();
info.onSave(WallpaperPickerActivity.this);
} else {
// no tile was selected, so we just finish the activity and go back
setResult(Activity.RESULT_OK);
finish();
}
}
});
mSetWallpaperButton = findViewById(R.id.set_wallpaper_button);
// CAB for deleting items
mActionModeCallback = new ActionMode.Callback() {
// Called when the action mode is created; startActionMode() was called
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
// Inflate a menu resource providing context menu items
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.cab_delete_wallpapers, menu);
return true;
}
private int numCheckedItems() {
int childCount = mWallpapersView.getChildCount();
int numCheckedItems = 0;
for (int i = 0; i < childCount; i++) {
CheckableFrameLayout c = (CheckableFrameLayout) mWallpapersView.getChildAt(i);
if (c.isChecked()) {
numCheckedItems++;
}
}
return numCheckedItems;
}
// Called each time the action mode is shown. Always called after onCreateActionMode,
// but may be called multiple times if the mode is invalidated.
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
int numCheckedItems = numCheckedItems();
if (numCheckedItems == 0) {
mode.finish();
return true;
} else {
mode.setTitle(getResources().getQuantityString(
R.plurals.number_of_items_selected, numCheckedItems, numCheckedItems));
return true;
}
}
// Called when the user selects a contextual menu item
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
int itemId = item.getItemId();
if (itemId == R.id.menu_delete) {
int childCount = mWallpapersView.getChildCount();
ArrayList<View> viewsToRemove = new ArrayList<View>();
boolean selectedTileRemoved = false;
for (int i = 0; i < childCount; i++) {
CheckableFrameLayout c =
(CheckableFrameLayout) mWallpapersView.getChildAt(i);
if (c.isChecked()) {
WallpaperTileInfo info = (WallpaperTileInfo) c.getTag();
info.onDelete(WallpaperPickerActivity.this);
viewsToRemove.add(c);
if (i == mSelectedIndex) {
selectedTileRemoved = true;
}
}
}
for (View v : viewsToRemove) {
mWallpapersView.removeView(v);
}
if (selectedTileRemoved) {
mSelectedIndex = -1;
mSelectedTile = null;
setSystemWallpaperVisiblity(true);
}
updateTileIndices();
mode.finish(); // Action picked, so close the CAB
return true;
} else {
return false;
}
}
// Called when the user exits the action mode
@Override
public void onDestroyActionMode(ActionMode mode) {
int childCount = mWallpapersView.getChildCount();
for (int i = 0; i < childCount; i++) {
CheckableFrameLayout c = (CheckableFrameLayout) mWallpapersView.getChildAt(i);
c.setChecked(false);
}
if (mSelectedTile != null) {
mSelectedTile.setSelected(true);
}
mActionMode = null;
}
};
}
public void setWallpaperButtonEnabled(boolean enabled) {
mSetWallpaperButton.setEnabled(enabled);
}
@Thunk void selectTile(View v) {
if (mSelectedTile != null) {
mSelectedTile.setSelected(false);
mSelectedTile = null;
}
mSelectedTile = v;
v.setSelected(true);
mSelectedIndex = mWallpapersView.indexOfChild(v);
// TODO: Remove this once the accessibility framework and
// services have better support for selection state.
v.announceForAccessibility(
getContext().getString(R.string.announce_selection, v.getContentDescription()));
}
@Thunk void initializeScrollForRtl() {
if (Utilities.isRtl(getResources())) {
final ViewTreeObserver observer = mWallpaperScrollContainer.getViewTreeObserver();
observer.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
public void onGlobalLayout() {
LinearLayout masterWallpaperList =
(LinearLayout) findViewById(R.id.master_wallpaper_list);
mWallpaperScrollContainer.scrollTo(masterWallpaperList.getWidth(), 0);
mWallpaperScrollContainer.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}
});
}
}
protected Bitmap getThumbnailOfLastPhoto() {
boolean canReadExternalStorage = getActivity().checkPermission(
Manifest.permission.READ_EXTERNAL_STORAGE, Process.myPid(), Process.myUid()) ==
PackageManager.PERMISSION_GRANTED;
if (!canReadExternalStorage) {
// MediaStore.Images.Media.EXTERNAL_CONTENT_URI requires
// the READ_EXTERNAL_STORAGE permission
return null;
}
Cursor cursor = MediaStore.Images.Media.query(getContext().getContentResolver(),
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Images.ImageColumns._ID,
MediaStore.Images.ImageColumns.DATE_TAKEN},
null, null, MediaStore.Images.ImageColumns.DATE_TAKEN + " DESC LIMIT 1");
Bitmap thumb = null;
if (cursor != null) {
if (cursor.moveToNext()) {
int id = cursor.getInt(0);
thumb = MediaStore.Images.Thumbnails.getThumbnail(getContext().getContentResolver(),
id, MediaStore.Images.Thumbnails.MINI_KIND, null);
}
cursor.close();
}
return thumb;
}
public void onStop() {
super.onStop();
mWallpaperStrip = findViewById(R.id.wallpaper_strip);
if (mWallpaperStrip.getAlpha() < 1f) {
mWallpaperStrip.setAlpha(1f);
mWallpaperStrip.setVisibility(View.VISIBLE);
}
}
public void onSaveInstanceState(Bundle outState) {
outState.putParcelableArrayList(TEMP_WALLPAPER_TILES, mTempWallpaperTiles);
outState.putInt(SELECTED_INDEX, mSelectedIndex);
}
protected void onRestoreInstanceState(Bundle savedInstanceState) {
ArrayList<Uri> uris = savedInstanceState.getParcelableArrayList(TEMP_WALLPAPER_TILES);
for (Uri uri : uris) {
addTemporaryWallpaperTile(uri, true);
}
mSelectedIndex = savedInstanceState.getInt(SELECTED_INDEX, -1);
}
@Thunk void populateWallpapersFromAdapter(ViewGroup parent, BaseAdapter adapter,
boolean addLongPressHandler) {
for (int i = 0; i < adapter.getCount(); i++) {
FrameLayout thumbnail = (FrameLayout) adapter.getView(i, null, parent);
parent.addView(thumbnail, i);
WallpaperTileInfo info = (WallpaperTileInfo) adapter.getItem(i);
thumbnail.setTag(info);
info.setView(thumbnail);
if (addLongPressHandler) {
addLongPressHandler(thumbnail);
}
thumbnail.setOnClickListener(mThumbnailOnClickListener);
}
}
@Thunk void updateTileIndices() {
LinearLayout masterWallpaperList = (LinearLayout) findViewById(R.id.master_wallpaper_list);
final int childCount = masterWallpaperList.getChildCount();
final Resources res = getResources();
// Do two passes; the first pass gets the total number of tiles
int numTiles = 0;
for (int passNum = 0; passNum < 2; passNum++) {
int tileIndex = 0;
for (int i = 0; i < childCount; i++) {
View child = masterWallpaperList.getChildAt(i);
LinearLayout subList;
int subListStart;
int subListEnd;
if (child.getTag() instanceof WallpaperTileInfo) {
subList = masterWallpaperList;
subListStart = i;
subListEnd = i + 1;
} else { // if (child instanceof LinearLayout) {
subList = (LinearLayout) child;
subListStart = 0;
subListEnd = subList.getChildCount();
}
for (int j = subListStart; j < subListEnd; j++) {
WallpaperTileInfo info = (WallpaperTileInfo) subList.getChildAt(j).getTag();
if (info.isNamelessWallpaper()) {
if (passNum == 0) {
numTiles++;
} else {
CharSequence label = res.getString(
R.string.wallpaper_accessibility_name, ++tileIndex, numTiles);
info.onIndexUpdated(label);
}
}
}
}
}
}
@Thunk static Point getDefaultThumbnailSize(Resources res) {
return new Point(res.getDimensionPixelSize(R.dimen.wallpaperThumbnailWidth),
res.getDimensionPixelSize(R.dimen.wallpaperThumbnailHeight));
}
@Thunk static Bitmap createThumbnail(Point size, Context context, Uri uri, byte[] imageBytes,
Resources res, int resId, int rotation, boolean leftAligned) {
int width = size.x;
int height = size.y;
BitmapCropTask cropTask;
if (uri != null) {
cropTask = new BitmapCropTask(
context, uri, null, rotation, width, height, false, true, null);
} else if (imageBytes != null) {
cropTask = new BitmapCropTask(
imageBytes, null, rotation, width, height, false, true, null);
} else {
cropTask = new BitmapCropTask(
context, res, resId, null, rotation, width, height, false, true, null);
}
Point bounds = cropTask.getImageBounds();
if (bounds == null || bounds.x == 0 || bounds.y == 0) {
return null;
}
Matrix rotateMatrix = new Matrix();
rotateMatrix.setRotate(rotation);
float[] rotatedBounds = new float[] { bounds.x, bounds.y };
rotateMatrix.mapPoints(rotatedBounds);
rotatedBounds[0] = Math.abs(rotatedBounds[0]);
rotatedBounds[1] = Math.abs(rotatedBounds[1]);
RectF cropRect = Utils.getMaxCropRect(
(int) rotatedBounds[0], (int) rotatedBounds[1], width, height, leftAligned);
cropTask.setCropBounds(cropRect);
if (cropTask.cropBitmap()) {
return cropTask.getCroppedBitmap();
} else {
return null;
}
}
private void addTemporaryWallpaperTile(final Uri uri, boolean fromRestore) {
mTempWallpaperTiles.add(uri);
// Add a tile for the image picked from Gallery
final FrameLayout pickedImageThumbnail = (FrameLayout) getLayoutInflater().
inflate(R.layout.wallpaper_picker_item, mWallpapersView, false);
pickedImageThumbnail.setVisibility(View.GONE);
mWallpapersView.addView(pickedImageThumbnail, 0);
// Load the thumbnail
final ImageView image = (ImageView) pickedImageThumbnail.findViewById(R.id.wallpaper_image);
final Point defaultSize = getDefaultThumbnailSize(this.getResources());
final Context context = getContext();
new AsyncTask<Void, Bitmap, Bitmap>() {
protected Bitmap doInBackground(Void...args) {
try {
int rotation = BitmapUtils.getRotationFromExif(context, uri);
return createThumbnail(defaultSize, context, uri, null, null, 0, rotation, false);
} catch (SecurityException securityException) {
if (isActivityDestroyed()) {
// Temporarily granted permissions are revoked when the activity
// finishes, potentially resulting in a SecurityException here.
// Even though {@link #isDestroyed} might also return true in different
// situations where the configuration changes, we are fine with
// catching these cases here as well.
cancel(false);
} else {
// otherwise it had a different cause and we throw it further
throw securityException;
}
return null;
}
}
protected void onPostExecute(Bitmap thumb) {
if (!isCancelled() && thumb != null) {
image.setImageBitmap(thumb);
Drawable thumbDrawable = image.getDrawable();
thumbDrawable.setDither(true);
pickedImageThumbnail.setVisibility(View.VISIBLE);
} else {
Log.e(TAG, "Error loading thumbnail for uri=" + uri);
}
}
}.execute();
UriWallpaperInfo info = new UriWallpaperInfo(uri);
pickedImageThumbnail.setTag(info);
info.setView(pickedImageThumbnail);
addLongPressHandler(pickedImageThumbnail);
updateTileIndices();
pickedImageThumbnail.setOnClickListener(mThumbnailOnClickListener);
if (!fromRestore) {
mThumbnailOnClickListener.onClick(pickedImageThumbnail);
}
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == IMAGE_PICK && resultCode == Activity.RESULT_OK) {
if (data != null && data.getData() != null) {
Uri uri = data.getData();
addTemporaryWallpaperTile(uri, false);
}
} else if (requestCode == PICK_WALLPAPER_THIRD_PARTY_ACTIVITY
&& resultCode == Activity.RESULT_OK) {
// Something was set on the third-party activity.
setResult(Activity.RESULT_OK);
finish();
}
}
private void addLongPressHandler(View v) {
v.setOnLongClickListener(mLongClickListener);
// Enable stylus button to also trigger long click.
final StylusEventHelper stylusEventHelper = new StylusEventHelper(v);
v.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent event) {
return stylusEventHelper.checkAndPerformStylusEvent(event);
}
});
}
private ArrayList<WallpaperTileInfo> findBundledWallpapers() {
final PackageManager pm = getContext().getPackageManager();
final ArrayList<WallpaperTileInfo> bundled = new ArrayList<WallpaperTileInfo>(24);
Partner partner = Partner.get(pm);
if (partner != null) {
final Resources partnerRes = partner.getResources();
final int resId = partnerRes.getIdentifier(Partner.RES_WALLPAPERS, "array",
partner.getPackageName());
if (resId != 0) {
addWallpapers(bundled, partnerRes, partner.getPackageName(), resId);
}
// Add system wallpapers
File systemDir = partner.getWallpaperDirectory();
if (systemDir != null && systemDir.isDirectory()) {
for (File file : systemDir.listFiles()) {
if (!file.isFile()) {
continue;
}
String name = file.getName();
int dotPos = name.lastIndexOf('.');
String extension = "";
if (dotPos >= -1) {
extension = name.substring(dotPos);
name = name.substring(0, dotPos);
}
if (name.endsWith("_small")) {
// it is a thumbnail
continue;
}
File thumbnail = new File(systemDir, name + "_small" + extension);
Bitmap thumb = BitmapFactory.decodeFile(thumbnail.getAbsolutePath());
if (thumb != null) {
bundled.add(new FileWallpaperInfo(file, new BitmapDrawable(thumb)));
}
}
}
}
Pair<ApplicationInfo, Integer> r = getWallpaperArrayResourceId();
if (r != null) {
try {
Resources wallpaperRes = getContext().getPackageManager()
.getResourcesForApplication(r.first);
addWallpapers(bundled, wallpaperRes, r.first.packageName, r.second);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
}
if (partner == null || !partner.hideDefaultWallpaper()) {
// Add an entry for the default wallpaper (stored in system resources)
WallpaperTileInfo defaultWallpaperInfo = Utilities.ATLEAST_KITKAT
? getDefaultWallpaper() : getPreKKDefaultWallpaperInfo();
if (defaultWallpaperInfo != null) {
bundled.add(0, defaultWallpaperInfo);
}
}
return bundled;
}
private boolean writeImageToFileAsJpeg(File f, Bitmap b) {
try {
f.createNewFile();
FileOutputStream thumbFileStream =
getContext().openFileOutput(f.getName(), Context.MODE_PRIVATE);
b.compress(Bitmap.CompressFormat.JPEG, 95, thumbFileStream);
thumbFileStream.close();
return true;
} catch (IOException e) {
Log.e(TAG, "Error while writing bitmap to file " + e);
f.delete();
}
return false;
}
private File getDefaultThumbFile() {
return new File(getContext().getFilesDir(), Build.VERSION.SDK_INT
+ "_" + LauncherFiles.DEFAULT_WALLPAPER_THUMBNAIL);
}
private boolean saveDefaultWallpaperThumb(Bitmap b) {
// Delete old thumbnails.
new File(getContext().getFilesDir(), LauncherFiles.DEFAULT_WALLPAPER_THUMBNAIL_OLD).delete();
new File(getContext().getFilesDir(), LauncherFiles.DEFAULT_WALLPAPER_THUMBNAIL).delete();
for (int i = Build.VERSION_CODES.JELLY_BEAN; i < Build.VERSION.SDK_INT; i++) {
new File(getContext().getFilesDir(), i + "_"
+ LauncherFiles.DEFAULT_WALLPAPER_THUMBNAIL).delete();
}
return writeImageToFileAsJpeg(getDefaultThumbFile(), b);
}
private ResourceWallpaperInfo getPreKKDefaultWallpaperInfo() {
Resources sysRes = Resources.getSystem();
int resId = sysRes.getIdentifier("default_wallpaper", "drawable", "android");
File defaultThumbFile = getDefaultThumbFile();
Bitmap thumb = null;
boolean defaultWallpaperExists = false;
if (defaultThumbFile.exists()) {
thumb = BitmapFactory.decodeFile(defaultThumbFile.getAbsolutePath());
defaultWallpaperExists = true;
} else {
Resources res = getResources();
Point defaultThumbSize = getDefaultThumbnailSize(res);
int rotation = BitmapUtils.getRotationFromExif(res, resId);
thumb = createThumbnail(
defaultThumbSize, getContext(), null, null, sysRes, resId, rotation, false);
if (thumb != null) {
defaultWallpaperExists = saveDefaultWallpaperThumb(thumb);
}
}
if (defaultWallpaperExists) {
return new ResourceWallpaperInfo(sysRes, resId, new BitmapDrawable(thumb));
}
return null;
}
@TargetApi(Build.VERSION_CODES.KITKAT)
private DefaultWallpaperInfo getDefaultWallpaper() {
File defaultThumbFile = getDefaultThumbFile();
Bitmap thumb = null;
boolean defaultWallpaperExists = false;
if (defaultThumbFile.exists()) {
thumb = BitmapFactory.decodeFile(defaultThumbFile.getAbsolutePath());
defaultWallpaperExists = true;
} else {
Resources res = getResources();
Point defaultThumbSize = getDefaultThumbnailSize(res);
Drawable wallpaperDrawable = WallpaperManager.getInstance(getContext()).getBuiltInDrawable(
defaultThumbSize.x, defaultThumbSize.y, true, 0.5f, 0.5f);
if (wallpaperDrawable != null) {
thumb = Bitmap.createBitmap(
defaultThumbSize.x, defaultThumbSize.y, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(thumb);
wallpaperDrawable.setBounds(0, 0, defaultThumbSize.x, defaultThumbSize.y);
wallpaperDrawable.draw(c);
c.setBitmap(null);
}
if (thumb != null) {
defaultWallpaperExists = saveDefaultWallpaperThumb(thumb);
}
}
if (defaultWallpaperExists) {
return new DefaultWallpaperInfo(new BitmapDrawable(thumb));
}
return null;
}
public Pair<ApplicationInfo, Integer> getWallpaperArrayResourceId() {
// Context.getPackageName() may return the "original" package name,
// com.android.launcher3; Resources needs the real package name,
// com.android.launcher3. So we ask Resources for what it thinks the
// package name should be.
final String packageName = getResources().getResourcePackageName(R.array.wallpapers);
try {
ApplicationInfo info = getContext().getPackageManager().getApplicationInfo(packageName, 0);
return new Pair<ApplicationInfo, Integer>(info, R.array.wallpapers);
} catch (PackageManager.NameNotFoundException e) {
return null;
}
}
private void addWallpapers(ArrayList<WallpaperTileInfo> known, Resources res,
String packageName, int listResId) {
final String[] extras = res.getStringArray(listResId);
for (String extra : extras) {
int resId = res.getIdentifier(extra, "drawable", packageName);
if (resId != 0) {
final int thumbRes = res.getIdentifier(extra + "_small", "drawable", packageName);
if (thumbRes != 0) {
ResourceWallpaperInfo wallpaperInfo =
new ResourceWallpaperInfo(res, resId, res.getDrawable(thumbRes));
known.add(wallpaperInfo);
// Log.d(TAG, "add: [" + packageName + "]: " + extra + " (" + res + ")");
}
} else {
Log.e(TAG, "Couldn't find wallpaper " + extra);
}
}
}
public CropView getCropView() {
return mCropView;
}
public SavedWallpaperImages getSavedImages() {
return mSavedImages;
}
private static class SimpleWallpapersAdapter extends ArrayAdapter<WallpaperTileInfo> {
private final LayoutInflater mLayoutInflater;
SimpleWallpapersAdapter(Context context, ArrayList<WallpaperTileInfo> wallpapers) {
super(context, R.layout.wallpaper_picker_item, wallpapers);
mLayoutInflater = LayoutInflater.from(context);
}
public View getView(int position, View convertView, ViewGroup parent) {
Drawable thumb = getItem(position).mThumb;
if (thumb == null) {
Log.e(TAG, "Error decoding thumbnail for wallpaper #" + position);
}
return createImageTileView(mLayoutInflater, convertView, parent, thumb);
}
}
public static View createImageTileView(LayoutInflater layoutInflater,
View convertView, ViewGroup parent, Drawable thumb) {
View view;
if (convertView == null) {
view = layoutInflater.inflate(R.layout.wallpaper_picker_item, parent, false);
} else {
view = convertView;
}
ImageView image = (ImageView) view.findViewById(R.id.wallpaper_image);
if (thumb != null) {
image.setImageDrawable(thumb);
thumb.setDither(true);
}
return view;
}
public void startActivityForResultSafely(Intent intent, int requestCode) {
Utilities.startActivityForResultSafely(getActivity(), intent, requestCode);
}
@Override
public boolean enableRotation() {
// Check if rotation is enabled for this device.
if (Utilities.isRotationAllowedForDevice(getContext()))
return true;
// Check if the user has specifically enabled rotation via preferences.
return Utilities.isAllowRotationPrefEnabled(getApplicationContext(), true);
}
}
