SizeFCompat.java
/*
* Copyright 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.
*/
package androidx.core.util;
import android.util.SizeF;
import androidx.annotation.DoNotInline;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
/**
* Immutable class for describing width and height dimensions in some arbitrary unit. Width and
* height are finite values stored as a floating point representation.
* <p>
* This is a backward-compatible version of {@link SizeF}.
*/
public final class SizeFCompat {
private final float mWidth;
private final float mHeight;
public SizeFCompat(float width, float height) {
mWidth = Preconditions.checkArgumentFinite(width, "width");
mHeight = Preconditions.checkArgumentFinite(height, "height");
}
/**
* Get the width of the size (as an arbitrary unit).
* @return width
*/
public float getWidth() {
return mWidth;
}
/**
* Get the height of the size (as an arbitrary unit).
* @return height
*/
public float getHeight() {
return mHeight;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof SizeFCompat)) return false;
SizeFCompat that = (SizeFCompat) o;
return that.mWidth == mWidth && that.mHeight == mHeight;
}
@Override
public int hashCode() {
return Float.floatToIntBits(mWidth) ^ Float.floatToIntBits(mHeight);
}
@NonNull
@Override
public String toString() {
return mWidth + "x" + mHeight;
}
/** Converts this {@link SizeFCompat} into a {@link SizeF}. */
@RequiresApi(21)
@NonNull
public SizeF toSizeF() {
return Api21Impl.toSizeF(this);
}
/** Converts this {@link SizeF} into a {@link SizeFCompat}. */
@RequiresApi(21)
@NonNull
public static SizeFCompat toSizeFCompat(@NonNull SizeF size) {
return Api21Impl.toSizeFCompat(size);
}
@RequiresApi(21)
private static final class Api21Impl {
@DoNotInline
@NonNull
static SizeFCompat toSizeFCompat(@NonNull SizeF size) {
Preconditions.checkNotNull(size);
return new SizeFCompat(size.getWidth(), size.getHeight());
}
@DoNotInline
@NonNull
static SizeF toSizeF(@NonNull SizeFCompat size) {
Preconditions.checkNotNull(size);
return new SizeF(size.getWidth(), size.getHeight());
}
}
}