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/*
* 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 android.support.v4.widget;
import android.content.res.ColorStateList;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.support.annotation.RequiresApi;
import android.widget.ImageView;
/**
* Helper for accessing features in {@link ImageView}.
*/
public class ImageViewCompat {
interface ImageViewCompatImpl {
ColorStateList getImageTintList(ImageView view);
void setImageTintList(ImageView view, ColorStateList tintList);
PorterDuff.Mode getImageTintMode(ImageView view);
void setImageTintMode(ImageView view, PorterDuff.Mode mode);
}
static class BaseViewCompatImpl implements ImageViewCompatImpl {
@Override
public ColorStateList getImageTintList(ImageView view) {
return (view instanceof TintableImageSourceView)
? ((TintableImageSourceView) view).getSupportImageTintList()
: null;
}
@Override
public void setImageTintList(ImageView view, ColorStateList tintList) {
if (view instanceof TintableImageSourceView) {
((TintableImageSourceView) view).setSupportImageTintList(tintList);
}
}
@Override
public void setImageTintMode(ImageView view, PorterDuff.Mode mode) {
if (view instanceof TintableImageSourceView) {
((TintableImageSourceView) view).setSupportImageTintMode(mode);
}
}
@Override
public PorterDuff.Mode getImageTintMode(ImageView view) {
return (view instanceof TintableImageSourceView)
? ((TintableImageSourceView) view).getSupportImageTintMode()
: null;
}
}
@RequiresApi(21)
static class LollipopViewCompatImpl extends BaseViewCompatImpl {
@Override
public ColorStateList getImageTintList(ImageView view) {
return view.getImageTintList();
}
@Override
public void setImageTintList(ImageView view, ColorStateList tintList) {
view.setImageTintList(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();
boolean hasTint = (view.getImageTintList() != null)
&& (view.getImageTintMode() != null);
if ((imageViewDrawable != null) && hasTint) {
if (imageViewDrawable.isStateful()) {
imageViewDrawable.setState(view.getDrawableState());
}
view.setImageDrawable(imageViewDrawable);
}
}
}
@Override
public void setImageTintMode(ImageView view, PorterDuff.Mode mode) {
view.setImageTintMode(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();
boolean hasTint = (view.getImageTintList() != null)
&& (view.getImageTintMode() != null);
if ((imageViewDrawable != null) && hasTint) {
if (imageViewDrawable.isStateful()) {
imageViewDrawable.setState(view.getDrawableState());
}
view.setImageDrawable(imageViewDrawable);
}
}
}
@Override
public PorterDuff.Mode getImageTintMode(ImageView view) {
return view.getImageTintMode();
}
}
static final ImageViewCompatImpl IMPL;
static {
if (android.os.Build.VERSION.SDK_INT >= 21) {
IMPL = new LollipopViewCompatImpl();
} else {
IMPL = new BaseViewCompatImpl();
}
}
/**
* Return the tint applied to the image drawable, if specified.
*/
public static ColorStateList getImageTintList(ImageView view) {
return IMPL.getImageTintList(view);
}
/**
* Applies a tint to the image drawable.
*/
public static void setImageTintList(ImageView view, ColorStateList tintList) {
IMPL.setImageTintList(view, tintList);
}
/**
* Return the blending mode used to apply the tint to the image drawable, if specified.
*/
public static PorterDuff.Mode getImageTintMode(ImageView view) {
return IMPL.getImageTintMode(view);
}
/**
* Specifies the blending mode used to apply the tint specified by
* {@link #setImageTintList(android.widget.ImageView, android.content.res.ColorStateList)}
* to the image drawable. The default mode is {@link PorterDuff.Mode#SRC_IN}.
*/
public static void setImageTintMode(ImageView view, PorterDuff.Mode mode) {
IMPL.setImageTintMode(view, mode);
}
private ImageViewCompat() {}
}
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