CornerDrawable.java
/*
* Copyright (C) 2014 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.slice;
import android.graphics.Canvas;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.InsetDrawable;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RestrictTo;
/**
* A wrapper for Drawables that uses a path to add mask for corners around the drawable,
* to match the radius of the underlying shape.
*
* @hide
*/
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
public class CornerDrawable extends InsetDrawable {
private float mCornerRadius;
private final Path mPath = new Path();
public CornerDrawable(@Nullable Drawable drawable, float cornerRadius) {
super(drawable, 0);
mCornerRadius = cornerRadius;
}
@Override
public void draw(@NonNull Canvas canvas) {
int saveCount = canvas.save();
canvas.clipPath(mPath);
super.draw(canvas);
canvas.restoreToCount(saveCount);
}
@Override
protected void onBoundsChange(@Nullable Rect r) {
if (mPath != null) {
mPath.reset();
mPath.addRoundRect(new RectF(r), mCornerRadius, mCornerRadius, Path.Direction.CW);
}
super.onBoundsChange(r);
}
}