| /* |
| * Copyright (C) 2017 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.icons; |
| |
| import static com.android.launcher3.icons.GraphicsUtils.getExpectedBitmapSize; |
| |
| import android.content.Context; |
| import android.graphics.Bitmap; |
| import android.graphics.Bitmap.Config; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Canvas; |
| import android.graphics.drawable.Drawable; |
| import android.os.Build; |
| import android.os.UserHandle; |
| import android.util.Log; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| |
| import com.android.launcher3.icons.ThemedIconDrawable.ThemedBitmapInfo; |
| import com.android.launcher3.icons.cache.BaseIconCache; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| |
| public class BitmapInfo { |
| |
| public static final Bitmap LOW_RES_ICON = Bitmap.createBitmap(1, 1, Config.ALPHA_8); |
| public static final BitmapInfo LOW_RES_INFO = fromBitmap(LOW_RES_ICON); |
| |
| public static final String TAG = "BitmapInfo"; |
| |
| protected static final byte TYPE_DEFAULT = 1; |
| protected static final byte TYPE_THEMED = 2; |
| |
| public final Bitmap icon; |
| public final int color; |
| |
| public BitmapInfo(Bitmap icon, int color) { |
| this.icon = icon; |
| this.color = color; |
| } |
| |
| /** |
| * Ideally icon should not be null, except in cases when generating hardware bitmap failed |
| */ |
| public final boolean isNullOrLowRes() { |
| return icon == null || icon == LOW_RES_ICON; |
| } |
| |
| public final boolean isLowRes() { |
| return LOW_RES_ICON == icon; |
| } |
| |
| /** |
| * Returns a serialized version of BitmapInfo |
| */ |
| @Nullable |
| public byte[] toByteArray() { |
| if (isNullOrLowRes()) { |
| return null; |
| } |
| ByteArrayOutputStream out = new ByteArrayOutputStream(getExpectedBitmapSize(icon) + 1); |
| try { |
| out.write(TYPE_DEFAULT); |
| icon.compress(Bitmap.CompressFormat.PNG, 100, out); |
| out.flush(); |
| out.close(); |
| return out.toByteArray(); |
| } catch (IOException e) { |
| Log.w(TAG, "Could not write bitmap"); |
| return null; |
| } |
| } |
| |
| /** |
| * Returns a new icon based on the theme of the context |
| */ |
| public FastBitmapDrawable newThemedIcon(Context context) { |
| return newIcon(context); |
| } |
| |
| /** |
| * Creates a drawable for the provided BitmapInfo |
| */ |
| public FastBitmapDrawable newIcon(Context context) { |
| FastBitmapDrawable drawable = isLowRes() |
| ? new PlaceHolderIconDrawable(this, context) |
| : new FastBitmapDrawable(this); |
| drawable.mDisabledAlpha = GraphicsUtils.getFloat(context, R.attr.disabledIconAlpha, 1f); |
| return drawable; |
| } |
| |
| /** |
| * Returns a BitmapInfo previously serialized using {@link #toByteArray()}; |
| */ |
| @NonNull |
| public static BitmapInfo fromByteArray(byte[] data, int color, UserHandle user, |
| BaseIconCache iconCache, Context context) { |
| if (data == null) { |
| return null; |
| } |
| BitmapFactory.Options decodeOptions; |
| if (BitmapRenderer.USE_HARDWARE_BITMAP && Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { |
| decodeOptions = new BitmapFactory.Options(); |
| decodeOptions.inPreferredConfig = Bitmap.Config.HARDWARE; |
| } else { |
| decodeOptions = null; |
| } |
| if (data[0] == TYPE_DEFAULT) { |
| return BitmapInfo.of( |
| BitmapFactory.decodeByteArray(data, 1, data.length - 1, decodeOptions), |
| color); |
| } else if (data[0] == TYPE_THEMED) { |
| return ThemedBitmapInfo.decode(data, color, decodeOptions, user, iconCache, context); |
| } else { |
| return null; |
| } |
| } |
| |
| public static BitmapInfo fromBitmap(@NonNull Bitmap bitmap) { |
| return of(bitmap, 0); |
| } |
| |
| public static BitmapInfo of(@NonNull Bitmap bitmap, int color) { |
| return new BitmapInfo(bitmap, color); |
| } |
| |
| /** |
| * Interface to be implemented by drawables to provide a custom BitmapInfo |
| */ |
| public interface Extender { |
| |
| /** |
| * Called for creating a custom BitmapInfo |
| */ |
| BitmapInfo getExtendedInfo(Bitmap bitmap, int color, |
| BaseIconFactory iconFactory, float normalizationScale, UserHandle user); |
| |
| /** |
| * Called to draw the UI independent of any runtime configurations like time or theme |
| */ |
| void drawForPersistence(Canvas canvas); |
| |
| /** |
| * Returns a new icon with theme applied |
| */ |
| Drawable getThemedDrawable(Context context); |
| } |
| } |