1/*
2 * Copyright (C) 2011 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.test.hwui;
18
19import android.app.Activity;
20import android.graphics.Bitmap;
21import android.graphics.SurfaceTexture;
22import android.hardware.Camera;
23import android.os.Bundle;
24import android.os.Environment;
25import android.view.Gravity;
26import android.view.TextureView;
27import android.view.View;
28import android.widget.Button;
29import android.widget.FrameLayout;
30
31import java.io.FileNotFoundException;
32import java.io.FileOutputStream;
33import java.io.IOException;
34
35@SuppressWarnings({"UnusedDeclaration"})
36public class GetBitmapActivity extends Activity implements TextureView.SurfaceTextureListener {
37    private Camera mCamera;
38    private TextureView mTextureView;
39
40    @Override
41    protected void onCreate(Bundle savedInstanceState) {
42        super.onCreate(savedInstanceState);
43
44        FrameLayout content = new FrameLayout(this);
45
46        mTextureView = new TextureView(this);
47        mTextureView.setSurfaceTextureListener(this);
48
49        Button button = new Button(this);
50        button.setText("Copy bitmap to /sdcard/textureview.png");
51        button.setOnClickListener(new View.OnClickListener() {
52            @Override
53            public void onClick(View v) {
54                Bitmap b = mTextureView.getBitmap();
55                try {
56                    FileOutputStream out = new FileOutputStream(
57                            Environment.getExternalStorageDirectory() + "/textureview.png");
58                    try {
59                        b.compress(Bitmap.CompressFormat.PNG, 100, out);
60                    } finally {
61                        try {
62                            out.close();
63                        } catch (IOException e) {
64                            // Ignore
65                        }
66                    }
67                } catch (FileNotFoundException e) {
68                    // Ignore
69                }
70            }
71        });
72
73        content.addView(mTextureView, new FrameLayout.LayoutParams(500, 400, Gravity.CENTER));
74        content.addView(button, new FrameLayout.LayoutParams(
75                FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT,
76                Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM));
77        setContentView(content);
78    }
79
80    @Override
81    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
82        mCamera = Camera.open();
83
84        try {
85            mCamera.setPreviewTexture(surface);
86        } catch (IOException t) {
87            android.util.Log.e("TextureView", "Cannot set preview texture target!", t);
88        }
89
90        mCamera.startPreview();
91    }
92
93    @Override
94    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
95        // Ignored, the Camera does all the work for us
96    }
97
98    @Override
99    public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
100        mCamera.stopPreview();
101        mCamera.release();
102        return true;
103    }
104
105    @Override
106    public void onSurfaceTextureUpdated(SurfaceTexture surface) {
107        // Ignored
108    }
109}
110