BitmapStorageExt.kt
/*
* Copyright (C) 2021 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.
*/
@file:JvmName("BitmapStorage")
package androidx.test.core.graphics
import android.graphics.Bitmap
import androidx.test.annotation.ExperimentalTestApi
import androidx.test.platform.io.PlatformTestStorage
import androidx.test.services.storage.TestStorage
import java.io.IOException
/**
* Writes the contents of the [Bitmap] to a compressed png file on [TestStorage]
*
* @param name a descriptive base name for the resulting file. '.png' will be appended to this name.
* @throws IOException if bitmap could not be compressed or written to ds
*/
@ExperimentalTestApi
@Throws(IOException::class)
fun Bitmap.writeToTestStorage(name: String) {
writeToTestStorage(TestStorage(), name)
}
/**
* Writes the contents of the [Bitmap] to a compressed png file to the given [PlatformTestStorage]
*
* @param testStorage the [PlatformTestStorage] to use
* @param name a descriptive base name for the resulting file
* @throws IOException if bitmap could not be compressed or written to storage
*/
@ExperimentalTestApi
@Throws(IOException::class)
fun Bitmap.writeToTestStorage(testStorage: PlatformTestStorage, name: String) {
testStorage.openOutputFile("$name.png").use {
if (!this.compress(
Bitmap.CompressFormat.PNG,
/** PNG is lossless, so quality is ignored. */
0,
it
)
) {
throw IOException("Failed to compress bitmap")
}
}
}