Michael Jurka
242 lines
9.0 KiB
Java
242 lines
9.0 KiB
Java
/*
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* Copyright (C) 2013 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.launcher3;
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import android.app.Activity;
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import android.content.ContentValues;
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import android.content.Context;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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import android.graphics.Bitmap;
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import android.graphics.BitmapFactory;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import android.util.Log;
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import android.util.Pair;
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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.ListAdapter;
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import com.android.photos.BitmapRegionTileSource;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.util.ArrayList;
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public class SavedWallpaperImages extends BaseAdapter implements ListAdapter {
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private static String TAG = "Launcher3.SavedWallpaperImages";
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private ImageDb mDb;
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ArrayList<SavedWallpaperTile> mImages;
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Context mContext;
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LayoutInflater mLayoutInflater;
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public static class SavedWallpaperTile extends WallpaperPickerActivity.WallpaperTileInfo {
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private int mDbId;
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private Drawable mThumb;
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public SavedWallpaperTile(int dbId, Drawable thumb) {
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mDbId = dbId;
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mThumb = thumb;
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}
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@Override
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public void onClick(WallpaperPickerActivity a) {
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String imageFilename = a.getSavedImages().getImageFilename(mDbId);
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File file = new File(a.getFilesDir(), imageFilename);
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BitmapRegionTileSource.FilePathBitmapSource bitmapSource =
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new BitmapRegionTileSource.FilePathBitmapSource(file.getAbsolutePath(), 1024);
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a.setCropViewTileSource(bitmapSource, false, true);
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}
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@Override
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public void onSave(WallpaperPickerActivity a) {
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boolean finishActivityWhenDone = true;
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String imageFilename = a.getSavedImages().getImageFilename(mDbId);
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a.setWallpaper(imageFilename, finishActivityWhenDone);
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}
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@Override
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public void onDelete(WallpaperPickerActivity a) {
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a.getSavedImages().deleteImage(mDbId);
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}
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@Override
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public boolean isSelectable() {
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return true;
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}
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@Override
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public boolean isNamelessWallpaper() {
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return true;
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}
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}
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public SavedWallpaperImages(Activity context) {
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mDb = new ImageDb(context);
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mContext = context;
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mLayoutInflater = context.getLayoutInflater();
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}
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public void loadThumbnailsAndImageIdList() {
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mImages = new ArrayList<SavedWallpaperTile>();
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SQLiteDatabase db = mDb.getReadableDatabase();
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Cursor result = db.query(ImageDb.TABLE_NAME,
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new String[] { ImageDb.COLUMN_ID,
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ImageDb.COLUMN_IMAGE_THUMBNAIL_FILENAME }, // cols to return
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null, // select query
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null, // args to select query
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null,
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null,
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ImageDb.COLUMN_ID + " DESC",
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null);
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while (result.moveToNext()) {
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String filename = result.getString(1);
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File file = new File(mContext.getFilesDir(), filename);
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Bitmap thumb = BitmapFactory.decodeFile(file.getAbsolutePath());
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if (thumb != null) {
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mImages.add(new SavedWallpaperTile(result.getInt(0), new BitmapDrawable(thumb)));
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}
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}
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result.close();
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}
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public int getCount() {
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return mImages.size();
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}
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public SavedWallpaperTile getItem(int position) {
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return mImages.get(position);
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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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public View getView(int position, View convertView, ViewGroup parent) {
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Drawable thumbDrawable = mImages.get(position).mThumb;
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if (thumbDrawable == null) {
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Log.e(TAG, "Error decoding thumbnail for wallpaper #" + position);
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}
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return WallpaperPickerActivity.createImageTileView(
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mLayoutInflater, position, convertView, parent, thumbDrawable);
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}
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public String getImageFilename(int id) {
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Pair<String, String> filenames = getImageFilenames(id);
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if (filenames != null) {
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return filenames.second;
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}
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return null;
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}
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private Pair<String, String> getImageFilenames(int id) {
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SQLiteDatabase db = mDb.getReadableDatabase();
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Cursor result = db.query(ImageDb.TABLE_NAME,
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new String[] { ImageDb.COLUMN_IMAGE_THUMBNAIL_FILENAME,
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ImageDb.COLUMN_IMAGE_FILENAME }, // cols to return
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ImageDb.COLUMN_ID + " = ?", // select query
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new String[] { Integer.toString(id) }, // args to select query
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null,
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null,
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null,
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null);
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if (result.getCount() > 0) {
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result.moveToFirst();
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String thumbFilename = result.getString(0);
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String imageFilename = result.getString(1);
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result.close();
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return new Pair<String, String>(thumbFilename, imageFilename);
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} else {
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return null;
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}
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}
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public void deleteImage(int id) {
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Pair<String, String> filenames = getImageFilenames(id);
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File imageFile = new File(mContext.getFilesDir(), filenames.first);
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imageFile.delete();
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File thumbFile = new File(mContext.getFilesDir(), filenames.second);
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thumbFile.delete();
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SQLiteDatabase db = mDb.getWritableDatabase();
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db.delete(ImageDb.TABLE_NAME,
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ImageDb.COLUMN_ID + " = ?", // SELECT query
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new String[] {
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Integer.toString(id) // args to SELECT query
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});
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}
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public void writeImage(Bitmap thumbnail, byte[] imageBytes) {
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try {
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File imageFile = File.createTempFile("wallpaper", "", mContext.getFilesDir());
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FileOutputStream imageFileStream =
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mContext.openFileOutput(imageFile.getName(), Context.MODE_PRIVATE);
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imageFileStream.write(imageBytes);
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imageFileStream.close();
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File thumbFile = File.createTempFile("wallpaperthumb", "", mContext.getFilesDir());
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FileOutputStream thumbFileStream =
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mContext.openFileOutput(thumbFile.getName(), Context.MODE_PRIVATE);
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thumbnail.compress(Bitmap.CompressFormat.JPEG, 95, thumbFileStream);
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thumbFileStream.close();
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SQLiteDatabase db = mDb.getWritableDatabase();
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ContentValues values = new ContentValues();
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values.put(ImageDb.COLUMN_IMAGE_THUMBNAIL_FILENAME, thumbFile.getName());
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values.put(ImageDb.COLUMN_IMAGE_FILENAME, imageFile.getName());
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db.insert(ImageDb.TABLE_NAME, null, values);
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} catch (IOException e) {
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Log.e(TAG, "Failed writing images to storage " + e);
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}
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}
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static class ImageDb extends SQLiteOpenHelper {
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final static int DB_VERSION = 1;
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final static String DB_NAME = "saved_wallpaper_images.db";
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final static String TABLE_NAME = "saved_wallpaper_images";
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final static String COLUMN_ID = "id";
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final static String COLUMN_IMAGE_THUMBNAIL_FILENAME = "image_thumbnail";
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final static String COLUMN_IMAGE_FILENAME = "image";
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Context mContext;
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public ImageDb(Context context) {
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super(context, new File(context.getCacheDir(), DB_NAME).getPath(), null, DB_VERSION);
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// Store the context for later use
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mContext = context;
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}
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@Override
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public void onCreate(SQLiteDatabase database) {
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database.execSQL("CREATE TABLE IF NOT EXISTS " + TABLE_NAME + " (" +
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COLUMN_ID + " INTEGER NOT NULL, " +
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COLUMN_IMAGE_THUMBNAIL_FILENAME + " TEXT NOT NULL, " +
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COLUMN_IMAGE_FILENAME + " TEXT NOT NULL, " +
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"PRIMARY KEY (" + COLUMN_ID + " ASC) " +
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");");
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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if (oldVersion != newVersion) {
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// Delete all the records; they'll be repopulated as this is a cache
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db.execSQL("DELETE FROM " + TABLE_NAME);
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}
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}
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}
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}
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