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.systemui.statusbar.phone;
18
19import android.content.Context;
20import android.graphics.Canvas;
21import android.graphics.Color;
22import android.graphics.ColorFilter;
23import android.graphics.Rect;
24import android.graphics.drawable.Drawable;
25import android.util.AttributeSet;
26import android.view.WindowInsets;
27import android.widget.FrameLayout;
28
29/**
30 * A view group which contains the preview of phone/camera and draws a black bar at the bottom as
31 * the fake navigation bar.
32 */
33public class KeyguardPreviewContainer extends FrameLayout {
34
35    private Drawable mBlackBarDrawable = new Drawable() {
36        @Override
37        public void draw(Canvas canvas) {
38            canvas.save();
39            canvas.clipRect(0, getHeight() - getPaddingBottom(), getWidth(), getHeight());
40            canvas.drawColor(Color.BLACK);
41            canvas.restore();
42        }
43
44        @Override
45        public void setAlpha(int alpha) {
46            // noop
47        }
48
49        @Override
50        public void setColorFilter(ColorFilter cf) {
51            // noop
52        }
53
54        @Override
55        public int getOpacity() {
56            return android.graphics.PixelFormat.OPAQUE;
57        }
58    };
59
60    public KeyguardPreviewContainer(Context context, AttributeSet attrs) {
61        super(context, attrs);
62        setBackground(mBlackBarDrawable);
63    }
64
65    @Override
66    public WindowInsets onApplyWindowInsets(WindowInsets insets) {
67        setPadding(0, 0, 0, insets.getStableInsetBottom());
68        return super.onApplyWindowInsets(insets);
69    }
70}
71