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 
17 package com.android.camera.widget;
18 
19 import android.content.Context;
20 import android.content.res.Configuration;
21 import android.view.View;
22 import android.widget.FrameLayout;
23 
24 import com.android.camera.exif.Rational;
25 import com.android.camera.settings.ResolutionUtil;
26 import com.android.camera2.R;
27 
28 /**
29  * Displays a dialog that allows people to choose aspect ratio. Please
30  * instantiate this class programmatically.
31  */
32 public class AspectRatioDialogLayout extends FrameLayout {
33 
34     private AspectRatioDialogListener mListener;
35 
36     private View mAspectRatio4x3Button;
37     private View mAspectRatio16x9Button;
38     private View mConfirmButton;
39 
40     private Rational mAspectRatio;
41     private int mLastOrientation;
42 
43     /**
44      * Constructs a new AspectRatioDialogLayout object.
45      *
46      * @param context The application context.
47      * @param defaultAspectRatio The default aspect ratio to choose.
48      */
AspectRatioDialogLayout(Context context, Rational defaultAspectRatio)49     public AspectRatioDialogLayout(Context context, Rational defaultAspectRatio) {
50         super(context);
51         mAspectRatio = defaultAspectRatio;
52         mLastOrientation = context.getResources().getConfiguration().orientation;
53         setBackgroundResource(R.color.fullscreen_dialog_background_color);
54         inflate(context, R.layout.aspect_ratio_dialog_content, this);
55         updateSubviewReferences();
56     }
57 
setListener(AspectRatioDialogListener listener)58     public void setListener(AspectRatioDialogListener listener) {
59         mListener = listener;
60     }
61 
62     @Override
onConfigurationChanged(Configuration config)63     public void onConfigurationChanged(Configuration config) {
64         super.onConfigurationChanged(config);
65 
66         if (config.orientation == mLastOrientation) {
67             return;
68         }
69         mLastOrientation = config.orientation;
70 
71         removeAllViews();
72         inflate(getContext(), R.layout.aspect_ratio_dialog_content, this);
73         updateSubviewReferences();
74     }
75 
updateSubviewReferences()76     private void updateSubviewReferences() {
77         mAspectRatio4x3Button = findViewById(R.id.aspect_ratio_4x3_button);
78         mAspectRatio16x9Button = findViewById(R.id.aspect_ratio_16x9_button);
79         mConfirmButton = findViewById(R.id.confirm_button);
80 
81         // Set aspect ratio after references to views are established.
82         setAspectRatio(mAspectRatio);
83 
84         // Hook onclick events.
85         mAspectRatio4x3Button.setOnClickListener(new OnClickListener() {
86             @Override
87             public void onClick(View v) {
88                 setAspectRatio(ResolutionUtil.ASPECT_RATIO_4x3);
89             }
90         });
91         mAspectRatio16x9Button.setOnClickListener(new OnClickListener() {
92             @Override
93             public void onClick(View v) {
94                 setAspectRatio(ResolutionUtil.ASPECT_RATIO_16x9);
95             }
96         });
97         mConfirmButton.setOnClickListener(new OnClickListener() {
98             @Override
99             public void onClick(View v) {
100                 if (mListener != null) {
101                     mListener.onConfirm(mAspectRatio);
102                 }
103             }
104         });
105     }
106 
setAspectRatio(Rational aspectRatio)107     private void setAspectRatio(Rational aspectRatio) {
108         mAspectRatio = aspectRatio;
109 
110         if (mAspectRatio.equals(ResolutionUtil.ASPECT_RATIO_4x3)) {
111             // Select 4x3 view and unselect 16x9 view.
112             mAspectRatio4x3Button.setSelected(true);
113             mAspectRatio16x9Button.setSelected(false);
114         } else if (mAspectRatio.equals(ResolutionUtil.ASPECT_RATIO_16x9)) {
115             // Select 16x9 view and unselect 4x3 view.
116             mAspectRatio16x9Button.setSelected(true);
117             mAspectRatio4x3Button.setSelected(false);
118         }
119     }
120 
121     public interface AspectRatioDialogListener {
onConfirm(Rational chosenAspectRatio)122         public void onConfirm(Rational chosenAspectRatio);
123     }
124 }
125