UserIcons.java revision 80d119bf6536293c3e6e4699a287a7bedfcf5586 
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 com.android.internal.util;
18
19import android.content.res.Resources;
20import android.graphics.Bitmap;
21import android.graphics.Canvas;
22import android.graphics.PorterDuff.Mode;
23import android.graphics.drawable.Drawable;
24import android.os.UserHandle;
25
26import com.android.internal.R;
27
28/**
29 * Helper class that generates default user icons.
30 */
31public class UserIcons {
32
33    private static final int[] USER_ICON_COLORS = {
34        R.color.user_icon_1,
35        R.color.user_icon_2,
36        R.color.user_icon_3,
37        R.color.user_icon_4,
38        R.color.user_icon_5,
39        R.color.user_icon_6,
40        R.color.user_icon_7,
41        R.color.user_icon_8
42    };
43
44    /**
45     * Converts a given drawable to a bitmap.
46     */
47    public static Bitmap convertToBitmap(Drawable icon) {
48        if (icon == null) {
49            return null;
50        }
51        final int width = icon.getIntrinsicWidth();
52        final int height = icon.getIntrinsicHeight();
53        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
54        Canvas canvas = new Canvas(bitmap);
55        icon.setBounds(0, 0, width, height);
56        icon.draw(canvas);
57        return bitmap;
58    }
59
60    /**
61     * Returns a default user icon for the given user.
62     *
63     * Note that for guest users, you should pass in {@code UserHandle.USER_NULL}.
64     * @param userId the user id or {@code UserHandle.USER_NULL} for a non-user specific icon
65     * @param light whether we want a light icon (suitable for a dark background)
66     */
67    public static Drawable getDefaultUserIcon(int userId, boolean light) {
68        int colorResId = light ? R.color.user_icon_default_white : R.color.user_icon_default_gray;
69        if (userId != UserHandle.USER_NULL) {
70            // Return colored icon instead
71            colorResId = USER_ICON_COLORS[userId % USER_ICON_COLORS.length];
72        }
73        Drawable icon = Resources.getSystem().getDrawable(R.drawable.ic_account_circle).mutate();
74        icon.setColorFilter(Resources.getSystem().getColor(colorResId), Mode.SRC_IN);
75        icon.setBounds(0, 0, icon.getIntrinsicWidth(), icon.getIntrinsicHeight());
76        return icon;
77    }
78}
79