ImageViewCompat.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 androidx.core.widget;
import android.content.res.ColorStateList;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.widget.ImageView;
import androidx.annotation.DoNotInline;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
/**
* Helper for accessing features in {@link ImageView}.
*/
public class ImageViewCompat {
/**
* Return the tint applied to the image drawable, if specified.
*/
@Nullable
public static ColorStateList getImageTintList(@NonNull ImageView view) {
if (Build.VERSION.SDK_INT >= 21) {
return Api21Impl.getImageTintList(view);
}
return (view instanceof TintableImageSourceView)
? ((TintableImageSourceView) view).getSupportImageTintList()
: null;
}
/**
* Applies a tint to the image drawable.
*/
public static void setImageTintList(@NonNull ImageView view,
@Nullable ColorStateList tintList) {
if (Build.VERSION.SDK_INT >= 21) {
Api21Impl.setImageTintList(view, tintList);
if (Build.VERSION.SDK_INT == 21) {
// Work around a bug in L that did not update the state of the image source
// after applying the tint
Drawable imageViewDrawable = view.getDrawable();
if ((imageViewDrawable != null) && (Api21Impl.getImageTintList(view) != null)) {
if (imageViewDrawable.isStateful()) {
imageViewDrawable.setState(view.getDrawableState());
}
view.setImageDrawable(imageViewDrawable);
}
}
} else if (view instanceof TintableImageSourceView) {
((TintableImageSourceView) view).setSupportImageTintList(tintList);
}
}
/**
* Return the blending mode used to apply the tint to the image drawable, if specified.
*/
@Nullable
public static PorterDuff.Mode getImageTintMode(@NonNull ImageView view) {
if (Build.VERSION.SDK_INT >= 21) {
return Api21Impl.getImageTintMode(view);
}
return (view instanceof TintableImageSourceView)
? ((TintableImageSourceView) view).getSupportImageTintMode()
: null;
}
/**
* Specifies the blending mode used to apply the tint specified by
* {@link #setImageTintList(ImageView, ColorStateList)}
* to the image drawable. The default mode is {@link PorterDuff.Mode#SRC_IN}.
*/
public static void setImageTintMode(@NonNull ImageView view, @Nullable PorterDuff.Mode mode) {
if (Build.VERSION.SDK_INT >= 21) {
Api21Impl.setImageTintMode(view, mode);
if (Build.VERSION.SDK_INT == 21) {
// Work around a bug in L that did not update the state of the image source
// after applying the tint
Drawable imageViewDrawable = view.getDrawable();
if ((imageViewDrawable != null) && (Api21Impl.getImageTintList(view) != null)) {
if (imageViewDrawable.isStateful()) {
imageViewDrawable.setState(view.getDrawableState());
}
view.setImageDrawable(imageViewDrawable);
}
}
} else if (view instanceof TintableImageSourceView) {
((TintableImageSourceView) view).setSupportImageTintMode(mode);
}
}
private ImageViewCompat() {
}
@RequiresApi(21)
static class Api21Impl {
private Api21Impl() {
// This class is not instantiable.
}
@DoNotInline
static ColorStateList getImageTintList(ImageView imageView) {
return imageView.getImageTintList();
}
@DoNotInline
static void setImageTintList(ImageView imageView, ColorStateList tint) {
imageView.setImageTintList(tint);
}
@DoNotInline
static PorterDuff.Mode getImageTintMode(ImageView imageView) {
return imageView.getImageTintMode();
}
@DoNotInline
static void setImageTintMode(ImageView imageView, PorterDuff.Mode tintMode) {
imageView.setImageTintMode(tintMode);
}
}
}