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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.test.hwui;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
import android.os.Bundle;
import android.os.Environment;
import android.view.Gravity;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
@SuppressWarnings({"UnusedDeclaration"})
public class TextureViewActivity extends Activity implements TextureView.SurfaceTextureListener {
private Camera mCamera;
private TextureView mTextureView;
private FrameLayout mContent;
private Matrix mMatrix = new Matrix();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mContent = new FrameLayout(this);
mTextureView = new TextureView(this);
mTextureView.setSurfaceTextureListener(this);
mTextureView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Bitmap b = mTextureView.getBitmap(800, 800);
BufferedOutputStream out = null;
try {
File dump = new File(Environment.getExternalStorageDirectory(), "out.png");
out = new BufferedOutputStream(new FileOutputStream(dump));
b.compress(Bitmap.CompressFormat.PNG, 100, out);
} catch (FileNotFoundException e) {
e.printStackTrace();
} finally {
if (out != null) try {
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
});
Button button = new Button(this);
button.setText("Remove/Add");
button.setOnClickListener(new View.OnClickListener() {
private boolean mAdded = true;
@Override
public void onClick(View v) {
if (mAdded) {
mContent.removeView(mTextureView);
} else {
mContent.addView(mTextureView);
}
mAdded = !mAdded;
}
});
mContent.addView(mTextureView, new FrameLayout.LayoutParams(
FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER));
mContent.addView(button, new FrameLayout.LayoutParams(
FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM));
setContentView(mContent);
}
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
mCamera = Camera.open();
mCamera.setDisplayOrientation(getCameraOrientation());
Camera.Size previewSize = mCamera.getParameters().getPreviewSize();
mTextureView.setLayoutParams(new FrameLayout.LayoutParams(
previewSize.width, previewSize.height, Gravity.CENTER));
try {
mCamera.setPreviewTexture(surface);
} catch (IOException t) {
android.util.Log.e("TextureView", "Cannot set preview texture target!", t);
}
mCamera.startPreview();
}
private int getCameraOrientation() {
Camera.CameraInfo info = new Camera.CameraInfo();
for (int i = 0; i < Camera.getNumberOfCameras(); i++) {
Camera.getCameraInfo(i, info);
if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) break;
}
int rotation = getWindowManager().getDefaultDisplay().getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0:
degrees = 0;
break;
case Surface.ROTATION_90:
degrees = 90;
break;
case Surface.ROTATION_180:
degrees = 180;
break;
case Surface.ROTATION_270:
degrees = 270;
break;
}
return (info.orientation - degrees + 360) % 360;
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
// Ignored, the Camera does all the work for us
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
mCamera.stopPreview();
mCamera.release();
return true;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
// Ignored
}
}
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