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