1 /*
2  * Copyright (C) 2013 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 
17 package com.android.camera.ui;
18 
19 import android.content.Context;
20 import android.graphics.Canvas;
21 import android.graphics.RectF;
22 import android.util.AttributeSet;
23 import android.view.View;
24 import android.widget.FrameLayout;
25 
26 /**
27  * ProgressOverlay is a view that sits under the PreviewOverlay.
28  * It does not respond to touch events, and only serves to show a
29  * centered progress bar.
30  */
31 public class ProgressOverlay extends View {
32     private final ProgressRenderer mProgressRenderer;
33     private int mCenterX;
34     private int mCenterY;
35 
36     /**
37      * Intialize a new ProgressOverlay with a ProgressRenderer.
38      */
ProgressOverlay(Context context, AttributeSet attrs)39     public ProgressOverlay(Context context, AttributeSet attrs) {
40         super(context, attrs);
41         mProgressRenderer = new ProgressRenderer(context, this);
42     }
43 
44     @Override
onLayout(boolean changed, int left, int top, int right, int bottom)45     public void onLayout(boolean changed, int left, int top, int right, int bottom) {
46         super.onLayout(changed, left, top, right, bottom);
47         if (changed) {
48             mCenterX = (right - left) / 2;
49             mCenterY = (bottom - top) / 2;
50         }
51     }
52 
53     /**
54      * Reposition the view within a given set of bounds, defined by a
55      * {@link android.graphics.RectF}.
56      */
setBounds(RectF area)57     public void setBounds(RectF area) {
58         if (area.width() > 0 && area.height() > 0) {
59             FrameLayout.LayoutParams params = (FrameLayout.LayoutParams) getLayoutParams();
60             params.width = (int) area.width();
61             params.height= (int) area.height();
62             params.setMargins((int) area.left, (int) area.top, 0, 0);
63             setLayoutParams(params);
64         }
65     }
66 
67     @Override
onDraw(Canvas canvas)68     public void onDraw(Canvas canvas) {
69         mProgressRenderer.onDraw(canvas, mCenterX, mCenterY);
70     }
71 
72     /**
73      * Set the progress state as a percent from 0-100.
74      */
setProgress(int percent)75     public void setProgress(int percent) {
76         mProgressRenderer.setProgress(percent);
77     }
78 }