mirror of
https://github.com/Katana-Official/SPatch-Update.git
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First commit
This commit is contained in:
Katana
610
app/src/main/java/com/android/launcher2/WidgetPreviewLoader.java
Normal file
610
app/src/main/java/com/android/launcher2/WidgetPreviewLoader.java
Normal file
@@ -0,0 +1,610 @@
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package com.android.launcher2;
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import android.appwidget.AppWidgetProviderInfo;
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import android.content.ComponentName;
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import android.content.ContentValues;
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import android.content.Context;
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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.res.Resources;
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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.Bitmap.Config;
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import android.graphics.BitmapFactory;
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import android.graphics.Canvas;
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import android.graphics.ColorMatrix;
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import android.graphics.ColorMatrixColorFilter;
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import android.graphics.Paint;
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import android.graphics.PorterDuff;
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import android.graphics.Rect;
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import android.graphics.Shader;
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import android.graphics.drawable.BitmapDrawable;
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import android.graphics.drawable.Drawable;
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import android.os.AsyncTask;
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import android.util.Log;
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import com.android.launcher.R;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.lang.ref.SoftReference;
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import java.lang.ref.WeakReference;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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abstract class SoftReferenceThreadLocal<T> {
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private ThreadLocal<SoftReference<T>> mThreadLocal;
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public SoftReferenceThreadLocal() {
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mThreadLocal = new ThreadLocal<SoftReference<T>>();
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}
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abstract T initialValue();
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public void set(T t) {
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mThreadLocal.set(new SoftReference<T>(t));
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}
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public T get() {
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SoftReference<T> reference = mThreadLocal.get();
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T obj;
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if (reference == null) {
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obj = initialValue();
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mThreadLocal.set(new SoftReference<T>(obj));
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return obj;
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} else {
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obj = reference.get();
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if (obj == null) {
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obj = initialValue();
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mThreadLocal.set(new SoftReference<T>(obj));
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}
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return obj;
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}
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}
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}
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class CanvasCache extends SoftReferenceThreadLocal<Canvas> {
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@Override
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protected Canvas initialValue() {
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return new Canvas();
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}
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}
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class PaintCache extends SoftReferenceThreadLocal<Paint> {
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@Override
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protected Paint initialValue() {
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return null;
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}
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}
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class BitmapCache extends SoftReferenceThreadLocal<Bitmap> {
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@Override
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protected Bitmap initialValue() {
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return null;
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}
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}
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class RectCache extends SoftReferenceThreadLocal<Rect> {
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@Override
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protected Rect initialValue() {
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return new Rect();
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}
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}
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class BitmapFactoryOptionsCache extends SoftReferenceThreadLocal<BitmapFactory.Options> {
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@Override
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protected BitmapFactory.Options initialValue() {
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return new BitmapFactory.Options();
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}
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}
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public class WidgetPreviewLoader {
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static final String TAG = "WidgetPreviewLoader";
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private int mPreviewBitmapWidth;
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private int mPreviewBitmapHeight;
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private String mSize;
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private Context mContext;
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private Launcher mLauncher;
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private PackageManager mPackageManager;
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private PagedViewCellLayout mWidgetSpacingLayout;
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// Used for drawing shortcut previews
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private BitmapCache mCachedShortcutPreviewBitmap = new BitmapCache();
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private PaintCache mCachedShortcutPreviewPaint = new PaintCache();
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private CanvasCache mCachedShortcutPreviewCanvas = new CanvasCache();
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// Used for drawing widget previews
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private CanvasCache mCachedAppWidgetPreviewCanvas = new CanvasCache();
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private RectCache mCachedAppWidgetPreviewSrcRect = new RectCache();
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private RectCache mCachedAppWidgetPreviewDestRect = new RectCache();
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private PaintCache mCachedAppWidgetPreviewPaint = new PaintCache();
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private String mCachedSelectQuery;
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private BitmapFactoryOptionsCache mCachedBitmapFactoryOptions = new BitmapFactoryOptionsCache();
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private int mAppIconSize;
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private IconCache mIconCache;
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private final float sWidgetPreviewIconPaddingPercentage = 0.25f;
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private CacheDb mDb;
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private HashMap<String, WeakReference<Bitmap>> mLoadedPreviews;
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private ArrayList<SoftReference<Bitmap>> mUnusedBitmaps;
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private static HashSet<String> sInvalidPackages;
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static {
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sInvalidPackages = new HashSet<String>();
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}
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public WidgetPreviewLoader(Launcher launcher) {
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mContext = mLauncher = launcher;
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mPackageManager = mContext.getPackageManager();
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mAppIconSize = mContext.getResources().getDimensionPixelSize(R.dimen.app_icon_size);
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LauncherApplication app = (LauncherApplication) launcher.getApplicationContext();
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mIconCache = app.getIconCache();
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mDb = app.getWidgetPreviewCacheDb();
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mLoadedPreviews = new HashMap<String, WeakReference<Bitmap>>();
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mUnusedBitmaps = new ArrayList<SoftReference<Bitmap>>();
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}
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public void setPreviewSize(int previewWidth, int previewHeight,
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PagedViewCellLayout widgetSpacingLayout) {
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mPreviewBitmapWidth = previewWidth;
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mPreviewBitmapHeight = previewHeight;
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mSize = previewWidth + "x" + previewHeight;
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mWidgetSpacingLayout = widgetSpacingLayout;
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}
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public Bitmap getPreview(final Object o) {
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String name = getObjectName(o);
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// check if the package is valid
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boolean packageValid = true;
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synchronized(sInvalidPackages) {
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packageValid = !sInvalidPackages.contains(getObjectPackage(o));
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}
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if (!packageValid) {
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return null;
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}
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if (packageValid) {
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synchronized(mLoadedPreviews) {
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// check if it exists in our existing cache
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if (mLoadedPreviews.containsKey(name) && mLoadedPreviews.get(name).get() != null) {
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return mLoadedPreviews.get(name).get();
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}
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}
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}
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Bitmap unusedBitmap = null;
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synchronized(mUnusedBitmaps) {
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// not in cache; we need to load it from the db
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while ((unusedBitmap == null || !unusedBitmap.isMutable() ||
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unusedBitmap.getWidth() != mPreviewBitmapWidth ||
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unusedBitmap.getHeight() != mPreviewBitmapHeight)
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&& mUnusedBitmaps.size() > 0) {
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unusedBitmap = mUnusedBitmaps.remove(0).get();
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}
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if (unusedBitmap != null) {
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final Canvas c = mCachedAppWidgetPreviewCanvas.get();
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c.setBitmap(unusedBitmap);
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c.drawColor(0, PorterDuff.Mode.CLEAR);
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c.setBitmap(null);
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}
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}
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if (unusedBitmap == null) {
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unusedBitmap = Bitmap.createBitmap(mPreviewBitmapWidth, mPreviewBitmapHeight,
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Bitmap.Config.ARGB_8888);
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}
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Bitmap preview = null;
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if (packageValid) {
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preview = readFromDb(name, unusedBitmap);
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}
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if (preview != null) {
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synchronized(mLoadedPreviews) {
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mLoadedPreviews.put(name, new WeakReference<Bitmap>(preview));
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}
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return preview;
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} else {
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// it's not in the db... we need to generate it
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final Bitmap generatedPreview = generatePreview(o, unusedBitmap);
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preview = generatedPreview;
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if (preview != unusedBitmap) {
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throw new RuntimeException("generatePreview is not recycling the bitmap " + o);
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}
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synchronized(mLoadedPreviews) {
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mLoadedPreviews.put(name, new WeakReference<Bitmap>(preview));
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}
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// write to db on a thread pool... this can be done lazily and improves the performance
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// of the first time widget previews are loaded
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new AsyncTask<Void, Void, Void>() {
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public Void doInBackground(Void ... args) {
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writeToDb(o, generatedPreview);
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return null;
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}
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}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
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return preview;
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}
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}
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public void recycleBitmap(Object o, Bitmap bitmapToRecycle) {
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String name = getObjectName(o);
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synchronized (mLoadedPreviews) {
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if (mLoadedPreviews.containsKey(name)) {
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Bitmap b = mLoadedPreviews.get(name).get();
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if (b == bitmapToRecycle) {
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mLoadedPreviews.remove(name);
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if (bitmapToRecycle.isMutable()) {
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synchronized (mUnusedBitmaps) {
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mUnusedBitmaps.add(new SoftReference<Bitmap>(b));
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}
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}
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} else {
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throw new RuntimeException("Bitmap passed in doesn't match up");
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}
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}
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}
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}
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static class CacheDb extends SQLiteOpenHelper {
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final static int DB_VERSION = 2;
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final static String DB_NAME = "widgetpreviews.db";
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final static String TABLE_NAME = "shortcut_and_widget_previews";
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final static String COLUMN_NAME = "name";
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final static String COLUMN_SIZE = "size";
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final static String COLUMN_PREVIEW_BITMAP = "preview_bitmap";
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Context mContext;
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public CacheDb(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_NAME + " TEXT NOT NULL, " +
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COLUMN_SIZE + " TEXT NOT NULL, " +
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COLUMN_PREVIEW_BITMAP + " BLOB NOT NULL, " +
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"PRIMARY KEY (" + COLUMN_NAME + ", " + COLUMN_SIZE + ") " +
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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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private static final String WIDGET_PREFIX = "Widget:";
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private static final String SHORTCUT_PREFIX = "Shortcut:";
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private static String getObjectName(Object o) {
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// should cache the string builder
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StringBuilder sb = new StringBuilder();
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String output;
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if (o instanceof AppWidgetProviderInfo) {
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sb.append(WIDGET_PREFIX);
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sb.append(((AppWidgetProviderInfo) o).provider.flattenToString());
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output = sb.toString();
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sb.setLength(0);
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} else {
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sb.append(SHORTCUT_PREFIX);
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ResolveInfo info = (ResolveInfo) o;
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sb.append(new ComponentName(info.activityInfo.packageName,
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info.activityInfo.name).flattenToString());
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output = sb.toString();
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sb.setLength(0);
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}
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return output;
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}
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private String getObjectPackage(Object o) {
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if (o instanceof AppWidgetProviderInfo) {
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return ((AppWidgetProviderInfo) o).provider.getPackageName();
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} else {
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ResolveInfo info = (ResolveInfo) o;
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return info.activityInfo.packageName;
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}
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}
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private void writeToDb(Object o, Bitmap preview) {
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String name = getObjectName(o);
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SQLiteDatabase db = mDb.getWritableDatabase();
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ContentValues values = new ContentValues();
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values.put(CacheDb.COLUMN_NAME, name);
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ByteArrayOutputStream stream = new ByteArrayOutputStream();
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preview.compress(Bitmap.CompressFormat.PNG, 100, stream);
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values.put(CacheDb.COLUMN_PREVIEW_BITMAP, stream.toByteArray());
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values.put(CacheDb.COLUMN_SIZE, mSize);
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db.insert(CacheDb.TABLE_NAME, null, values);
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}
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public static void removeFromDb(final CacheDb cacheDb, final String packageName) {
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synchronized(sInvalidPackages) {
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sInvalidPackages.add(packageName);
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}
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new AsyncTask<Void, Void, Void>() {
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public Void doInBackground(Void ... args) {
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SQLiteDatabase db = cacheDb.getWritableDatabase();
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db.delete(CacheDb.TABLE_NAME,
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CacheDb.COLUMN_NAME + " LIKE ? OR " +
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CacheDb.COLUMN_NAME + " LIKE ?", // SELECT query
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new String[] {
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WIDGET_PREFIX + packageName + "/%",
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SHORTCUT_PREFIX + packageName + "/%"} // args to SELECT query
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);
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synchronized(sInvalidPackages) {
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sInvalidPackages.remove(packageName);
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}
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return null;
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}
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}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
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}
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private Bitmap readFromDb(String name, Bitmap b) {
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if (mCachedSelectQuery == null) {
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mCachedSelectQuery = CacheDb.COLUMN_NAME + " = ? AND " +
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CacheDb.COLUMN_SIZE + " = ?";
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}
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SQLiteDatabase db = mDb.getReadableDatabase();
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Cursor result = db.query(CacheDb.TABLE_NAME,
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new String[] { CacheDb.COLUMN_PREVIEW_BITMAP }, // cols to return
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mCachedSelectQuery, // select query
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new String[] { name, mSize }, // 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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byte[] blob = result.getBlob(0);
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result.close();
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final BitmapFactory.Options opts = mCachedBitmapFactoryOptions.get();
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opts.inBitmap = b;
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opts.inSampleSize = 1;
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Bitmap out = BitmapFactory.decodeByteArray(blob, 0, blob.length, opts);
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return out;
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} else {
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result.close();
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return null;
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||||
}
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||||
}
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public Bitmap generatePreview(Object info, Bitmap preview) {
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if (preview != null &&
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||||
(preview.getWidth() != mPreviewBitmapWidth ||
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||||
preview.getHeight() != mPreviewBitmapHeight)) {
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throw new RuntimeException("Improperly sized bitmap passed as argument");
|
||||
}
|
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if (info instanceof AppWidgetProviderInfo) {
|
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return generateWidgetPreview((AppWidgetProviderInfo) info, preview);
|
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} else {
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return generateShortcutPreview(
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(ResolveInfo) info, mPreviewBitmapWidth, mPreviewBitmapHeight, preview);
|
||||
}
|
||||
}
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||||
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||||
public Bitmap generateWidgetPreview(AppWidgetProviderInfo info, Bitmap preview) {
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||||
int[] cellSpans = Launcher.getSpanForWidget(mLauncher, info);
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||||
int maxWidth = maxWidthForWidgetPreview(cellSpans[0]);
|
||||
int maxHeight = maxHeightForWidgetPreview(cellSpans[1]);
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||||
return generateWidgetPreview(info.provider, info.previewImage, info.icon,
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||||
cellSpans[0], cellSpans[1], maxWidth, maxHeight, preview, null);
|
||||
}
|
||||
|
||||
public int maxWidthForWidgetPreview(int spanX) {
|
||||
return Math.min(mPreviewBitmapWidth,
|
||||
mWidgetSpacingLayout.estimateCellWidth(spanX));
|
||||
}
|
||||
|
||||
public int maxHeightForWidgetPreview(int spanY) {
|
||||
return Math.min(mPreviewBitmapHeight,
|
||||
mWidgetSpacingLayout.estimateCellHeight(spanY));
|
||||
}
|
||||
|
||||
public Bitmap generateWidgetPreview(ComponentName provider, int previewImage,
|
||||
int iconId, int cellHSpan, int cellVSpan, int maxPreviewWidth, int maxPreviewHeight,
|
||||
Bitmap preview, int[] preScaledWidthOut) {
|
||||
// Load the preview image if possible
|
||||
String packageName = provider.getPackageName();
|
||||
if (maxPreviewWidth < 0) maxPreviewWidth = Integer.MAX_VALUE;
|
||||
if (maxPreviewHeight < 0) maxPreviewHeight = Integer.MAX_VALUE;
|
||||
|
||||
Drawable drawable = null;
|
||||
if (previewImage != 0) {
|
||||
drawable = mPackageManager.getDrawable(packageName, previewImage, null);
|
||||
if (drawable == null) {
|
||||
Log.w(TAG, "Can't load widget preview drawable 0x" +
|
||||
Integer.toHexString(previewImage) + " for provider: " + provider);
|
||||
}
|
||||
}
|
||||
|
||||
int previewWidth;
|
||||
int previewHeight;
|
||||
Bitmap defaultPreview = null;
|
||||
boolean widgetPreviewExists = (drawable != null);
|
||||
if (widgetPreviewExists) {
|
||||
previewWidth = drawable.getIntrinsicWidth();
|
||||
previewHeight = drawable.getIntrinsicHeight();
|
||||
} else {
|
||||
// Generate a preview image if we couldn't load one
|
||||
if (cellHSpan < 1) cellHSpan = 1;
|
||||
if (cellVSpan < 1) cellVSpan = 1;
|
||||
|
||||
BitmapDrawable previewDrawable = (BitmapDrawable) mContext.getResources()
|
||||
.getDrawable(R.drawable.widget_preview_tile);
|
||||
final int previewDrawableWidth = previewDrawable
|
||||
.getIntrinsicWidth();
|
||||
final int previewDrawableHeight = previewDrawable
|
||||
.getIntrinsicHeight();
|
||||
previewWidth = previewDrawableWidth * cellHSpan; // subtract 2 dips
|
||||
previewHeight = previewDrawableHeight * cellVSpan;
|
||||
|
||||
defaultPreview = Bitmap.createBitmap(previewWidth, previewHeight,
|
||||
Config.ARGB_8888);
|
||||
final Canvas c = mCachedAppWidgetPreviewCanvas.get();
|
||||
c.setBitmap(defaultPreview);
|
||||
previewDrawable.setBounds(0, 0, previewWidth, previewHeight);
|
||||
previewDrawable.setTileModeXY(Shader.TileMode.REPEAT,
|
||||
Shader.TileMode.REPEAT);
|
||||
previewDrawable.draw(c);
|
||||
c.setBitmap(null);
|
||||
|
||||
// Draw the icon in the top left corner
|
||||
int minOffset = (int) (mAppIconSize * sWidgetPreviewIconPaddingPercentage);
|
||||
int smallestSide = Math.min(previewWidth, previewHeight);
|
||||
float iconScale = Math.min((float) smallestSide
|
||||
/ (mAppIconSize + 2 * minOffset), 1f);
|
||||
|
||||
try {
|
||||
Drawable icon = null;
|
||||
int hoffset =
|
||||
(int) ((previewDrawableWidth - mAppIconSize * iconScale) / 2);
|
||||
int yoffset =
|
||||
(int) ((previewDrawableHeight - mAppIconSize * iconScale) / 2);
|
||||
if (iconId > 0)
|
||||
icon = mIconCache.getFullResIcon(packageName, iconId);
|
||||
if (icon != null) {
|
||||
renderDrawableToBitmap(icon, defaultPreview, hoffset,
|
||||
yoffset, (int) (mAppIconSize * iconScale),
|
||||
(int) (mAppIconSize * iconScale));
|
||||
}
|
||||
} catch (Resources.NotFoundException e) {
|
||||
}
|
||||
}
|
||||
|
||||
// Scale to fit width only - let the widget preview be clipped in the
|
||||
// vertical dimension
|
||||
float scale = 1f;
|
||||
if (preScaledWidthOut != null) {
|
||||
preScaledWidthOut[0] = previewWidth;
|
||||
}
|
||||
if (previewWidth > maxPreviewWidth) {
|
||||
scale = maxPreviewWidth / (float) previewWidth;
|
||||
}
|
||||
if (scale != 1f) {
|
||||
previewWidth = (int) (scale * previewWidth);
|
||||
previewHeight = (int) (scale * previewHeight);
|
||||
}
|
||||
|
||||
// If a bitmap is passed in, we use it; otherwise, we create a bitmap of the right size
|
||||
if (preview == null) {
|
||||
preview = Bitmap.createBitmap(previewWidth, previewHeight, Config.ARGB_8888);
|
||||
}
|
||||
|
||||
// Draw the scaled preview into the final bitmap
|
||||
int x = (preview.getWidth() - previewWidth) / 2;
|
||||
if (widgetPreviewExists) {
|
||||
renderDrawableToBitmap(drawable, preview, x, 0, previewWidth,
|
||||
previewHeight);
|
||||
} else {
|
||||
final Canvas c = mCachedAppWidgetPreviewCanvas.get();
|
||||
final Rect src = mCachedAppWidgetPreviewSrcRect.get();
|
||||
final Rect dest = mCachedAppWidgetPreviewDestRect.get();
|
||||
c.setBitmap(preview);
|
||||
src.set(0, 0, defaultPreview.getWidth(), defaultPreview.getHeight());
|
||||
dest.set(x, 0, x + previewWidth, previewHeight);
|
||||
|
||||
Paint p = mCachedAppWidgetPreviewPaint.get();
|
||||
if (p == null) {
|
||||
p = new Paint();
|
||||
p.setFilterBitmap(true);
|
||||
mCachedAppWidgetPreviewPaint.set(p);
|
||||
}
|
||||
c.drawBitmap(defaultPreview, src, dest, p);
|
||||
c.setBitmap(null);
|
||||
}
|
||||
return preview;
|
||||
}
|
||||
|
||||
private Bitmap generateShortcutPreview(
|
||||
ResolveInfo info, int maxWidth, int maxHeight, Bitmap preview) {
|
||||
Bitmap tempBitmap = mCachedShortcutPreviewBitmap.get();
|
||||
final Canvas c = mCachedShortcutPreviewCanvas.get();
|
||||
if (tempBitmap == null ||
|
||||
tempBitmap.getWidth() != maxWidth ||
|
||||
tempBitmap.getHeight() != maxHeight) {
|
||||
tempBitmap = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
|
||||
mCachedShortcutPreviewBitmap.set(tempBitmap);
|
||||
} else {
|
||||
c.setBitmap(tempBitmap);
|
||||
c.drawColor(0, PorterDuff.Mode.CLEAR);
|
||||
c.setBitmap(null);
|
||||
}
|
||||
// Render the icon
|
||||
Drawable icon = mIconCache.getFullResIcon(info);
|
||||
|
||||
int paddingTop = mContext.
|
||||
getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_top);
|
||||
int paddingLeft = mContext.
|
||||
getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_left);
|
||||
int paddingRight = mContext.
|
||||
getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_right);
|
||||
|
||||
int scaledIconWidth = (maxWidth - paddingLeft - paddingRight);
|
||||
|
||||
renderDrawableToBitmap(
|
||||
icon, tempBitmap, paddingLeft, paddingTop, scaledIconWidth, scaledIconWidth);
|
||||
|
||||
if (preview != null &&
|
||||
(preview.getWidth() != maxWidth || preview.getHeight() != maxHeight)) {
|
||||
throw new RuntimeException("Improperly sized bitmap passed as argument");
|
||||
} else if (preview == null) {
|
||||
preview = Bitmap.createBitmap(maxWidth, maxHeight, Config.ARGB_8888);
|
||||
}
|
||||
|
||||
c.setBitmap(preview);
|
||||
// Draw a desaturated/scaled version of the icon in the background as a watermark
|
||||
Paint p = mCachedShortcutPreviewPaint.get();
|
||||
if (p == null) {
|
||||
p = new Paint();
|
||||
ColorMatrix colorMatrix = new ColorMatrix();
|
||||
colorMatrix.setSaturation(0);
|
||||
p.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
|
||||
p.setAlpha((int) (255 * 0.06f));
|
||||
mCachedShortcutPreviewPaint.set(p);
|
||||
}
|
||||
c.drawBitmap(tempBitmap, 0, 0, p);
|
||||
c.setBitmap(null);
|
||||
|
||||
renderDrawableToBitmap(icon, preview, 0, 0, mAppIconSize, mAppIconSize);
|
||||
|
||||
return preview;
|
||||
}
|
||||
|
||||
|
||||
public static void renderDrawableToBitmap(
|
||||
Drawable d, Bitmap bitmap, int x, int y, int w, int h) {
|
||||
renderDrawableToBitmap(d, bitmap, x, y, w, h, 1f);
|
||||
}
|
||||
|
||||
private static void renderDrawableToBitmap(
|
||||
Drawable d, Bitmap bitmap, int x, int y, int w, int h,
|
||||
float scale) {
|
||||
if (bitmap != null) {
|
||||
Canvas c = new Canvas(bitmap);
|
||||
c.scale(scale, scale);
|
||||
Rect oldBounds = d.copyBounds();
|
||||
d.setBounds(x, y, x + w, y + h);
|
||||
d.draw(c);
|
||||
d.setBounds(oldBounds); // Restore the bounds
|
||||
c.setBitmap(null);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user