1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package androidx.core.graphics.drawable;
18
19import android.content.res.Resources;
20import android.graphics.Bitmap;
21import android.graphics.BitmapFactory;
22import android.graphics.Rect;
23import android.os.Build;
24import android.util.Log;
25
26import androidx.annotation.NonNull;
27import androidx.annotation.Nullable;
28import androidx.core.graphics.BitmapCompat;
29import androidx.core.view.GravityCompat;
30import androidx.core.view.ViewCompat;
31
32import java.io.InputStream;
33
34/**
35 * Constructs {@link RoundedBitmapDrawable RoundedBitmapDrawable} objects,
36 * either from Bitmaps directly, or from streams and files.
37 */
38public final class RoundedBitmapDrawableFactory {
39    private static final String TAG = "RoundedBitmapDrawableFa";
40
41    private static class DefaultRoundedBitmapDrawable extends RoundedBitmapDrawable {
42        DefaultRoundedBitmapDrawable(Resources res, Bitmap bitmap) {
43            super(res, bitmap);
44        }
45
46        @Override
47        public void setMipMap(boolean mipMap) {
48            if (mBitmap != null) {
49                BitmapCompat.setHasMipMap(mBitmap, mipMap);
50                invalidateSelf();
51            }
52        }
53
54        @Override
55        public boolean hasMipMap() {
56            return mBitmap != null && BitmapCompat.hasMipMap(mBitmap);
57        }
58
59        @Override
60        void gravityCompatApply(int gravity, int bitmapWidth, int bitmapHeight,
61                Rect bounds, Rect outRect) {
62            GravityCompat.apply(gravity, bitmapWidth, bitmapHeight,
63                    bounds, outRect, ViewCompat.LAYOUT_DIRECTION_LTR);
64        }
65    }
66
67    /**
68     * Returns a new drawable by creating it from a bitmap, setting initial target density based on
69     * the display metrics of the resources.
70     */
71    @NonNull
72    public static RoundedBitmapDrawable create(@NonNull Resources res, @Nullable Bitmap bitmap) {
73        if (Build.VERSION.SDK_INT >= 21) {
74            return new RoundedBitmapDrawable21(res, bitmap);
75        }
76        return new DefaultRoundedBitmapDrawable(res, bitmap);
77    }
78
79    /**
80     * Returns a new drawable, creating it by opening a given file path and decoding the bitmap.
81     */
82    @NonNull
83    public static RoundedBitmapDrawable create(@NonNull Resources res, @NonNull String filepath) {
84        final RoundedBitmapDrawable drawable = create(res, BitmapFactory.decodeFile(filepath));
85        if (drawable.getBitmap() == null) {
86            Log.w(TAG, "RoundedBitmapDrawable cannot decode " + filepath);
87        }
88        return drawable;
89    }
90
91
92    /**
93     * Returns a new drawable, creating it by decoding a bitmap from the given input stream.
94     */
95    @NonNull
96    public static RoundedBitmapDrawable create(@NonNull Resources res, @NonNull InputStream is) {
97        final RoundedBitmapDrawable drawable = create(res, BitmapFactory.decodeStream(is));
98        if (drawable.getBitmap() == null) {
99            Log.w(TAG, "RoundedBitmapDrawable cannot decode " + is);
100        }
101        return drawable;
102    }
103
104    private RoundedBitmapDrawableFactory() {}
105
106}
107