BlendModeColorFilterCompat.java
/*
* Copyright 2019 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 androidx.core.graphics;
import android.graphics.BlendMode;
import android.graphics.BlendModeColorFilter;
import android.graphics.ColorFilter;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.os.Build;
import androidx.annotation.DoNotInline;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
/**
* Helper for accessing ColorFilter APIs on various API levels of the platform
*/
public class BlendModeColorFilterCompat {
/**
* Convenience method to create ColorFilter in a backward-compatible way.
*
* This method falls back on PorterDuffColorFilter for API levels that do not support
* BlendModeColorFilter. This method returns {@code null} if the BlendMode provided is not
* supported on a given API level.
*/
public static @Nullable ColorFilter createBlendModeColorFilterCompat(int color,
@NonNull BlendModeCompat blendModeCompat) {
if (Build.VERSION.SDK_INT >= 29) {
Object blendMode =
BlendModeUtils.Api29Impl.obtainBlendModeFromCompat(blendModeCompat);
return blendMode != null
? Api29Impl.createBlendModeColorFilter(color, blendMode) : null;
} else {
PorterDuff.Mode porterDuffMode =
BlendModeUtils.obtainPorterDuffFromCompat(blendModeCompat);
return porterDuffMode != null
? new PorterDuffColorFilter(color, porterDuffMode) : null;
}
}
private BlendModeColorFilterCompat() {
// This class is not instantiable.
}
@RequiresApi(29)
static class Api29Impl {
private Api29Impl() {
// This class is not instantiable.
}
@DoNotInline
static ColorFilter createBlendModeColorFilter(int color, Object mode) {
return new BlendModeColorFilter(color, (BlendMode) mode);
}
}
}