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      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      */
     39     public ProgressOverlay(Context context, AttributeSet attrs) {
     40         super(context, attrs);
     41         mProgressRenderer = new ProgressRenderer(context, this);
     42     }
     43 
     44     @Override
     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      */
     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
     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      */
     75     public void setProgress(int percent) {
     76         mProgressRenderer.setProgress(percent);
     77     }
     78 }