src/com/android/launcher3/graphics/BitmapRenderer.java

/*
 * 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.graphics;

import android.annotation.TargetApi;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Picture;
import android.os.Build;

import com.android.launcher3.Utilities;

/**
 * Interface representing a bitmap draw operation.
 */
public interface BitmapRenderer {

    boolean USE_HARDWARE_BITMAP = Utilities.ATLEAST_P;

    static Bitmap createSoftwareBitmap(int width, int height, BitmapRenderer renderer) {
        Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        renderer.draw(new Canvas(result));
        return result;
    }

    @TargetApi(Build.VERSION_CODES.P)
    static Bitmap createHardwareBitmap(int width, int height, BitmapRenderer renderer) {
        if (!USE_HARDWARE_BITMAP) {
            return createSoftwareBitmap(width, height, renderer);
        }

        Picture picture = new Picture();
        renderer.draw(picture.beginRecording(width, height));
        picture.endRecording();
        return Bitmap.createBitmap(picture);
    }

    void draw(Canvas out);
}