Revision control
Copy as Markdown
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
package org.mozilla.vrbrowser.ui;
import android.app.Presentation;
import android.content.Context;
import android.graphics.SurfaceTexture;
import android.hardware.display.DisplayManager;
import android.hardware.display.VirtualDisplay;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Display;
import android.view.KeyEvent;
import android.view.Surface;
import android.view.View;
import android.view.ViewGroup;
import org.mozilla.vrbrowser.VRBrowserActivity;
import org.mozilla.vrbrowser.utils.SystemUtils;
public class OffscreenDisplay {
final String LOGTAG = SystemUtils.createLogtag(OffscreenDisplay.class);
private Context mContext;
private int mWidth;
private int mHeight;
private VirtualDisplay mVirtualDisplay;
private SurfaceTexture mTexture;
private Surface mSurface;
private OffscreenPresentation mPresentation;
private View mContentView;
private DisplayMetrics mDefaultMetrics;
public OffscreenDisplay(Context aContext, SurfaceTexture aTexture, int aWidth, int aHeight) {
mContext = aContext;
mWidth = aWidth;
mHeight = aHeight;
aTexture.setDefaultBufferSize(aWidth, aHeight);
mTexture = aTexture;
mSurface = new Surface(aTexture);
mDefaultMetrics = new DisplayMetrics();
onResume();
}
public void setContentView(View aView) {
mContentView = aView;
if (mPresentation != null) {
mPresentation.setContentView(aView);
}
}
public void resize(int aWidth, int aHeight) {
if (mVirtualDisplay == null) {
throw new IllegalStateException("No virtual display!");
}
mVirtualDisplay.resize(aWidth, aHeight, mDefaultMetrics.densityDpi);
}
public void onPause() {
if (mPresentation != null) {
mPresentation.dismiss();
mPresentation = null;
}
if (mVirtualDisplay != null) {
mVirtualDisplay.release();
mVirtualDisplay = null;
}
if (mContentView != null && mContentView.getParent() != null) {
((ViewGroup)mContentView.getParent()).removeView(mContentView);
}
}
public void onResume() {
if (mVirtualDisplay == null) {
DisplayManager manager = (DisplayManager) mContext.getSystemService(Context.DISPLAY_SERVICE);
Display defaultDisplay = manager.getDisplay(Display.DEFAULT_DISPLAY);
int flags = DisplayManager.VIRTUAL_DISPLAY_FLAG_OWN_CONTENT_ONLY;
defaultDisplay.getMetrics(mDefaultMetrics);
mVirtualDisplay = manager.createVirtualDisplay("OffscreenViews Overlay", mWidth, mHeight,
mDefaultMetrics.densityDpi, mSurface, flags);
}
if (mPresentation == null) {
mPresentation = new OffscreenPresentation(mContext, mVirtualDisplay.getDisplay());
mPresentation.show();
if (mContentView != null) {
mPresentation.setContentView(mContentView);
}
}
}
public void release() {
onPause();
if (mSurface != null) {
mSurface.release();
}
if (mTexture != null) {
mTexture.release();
}
}
class OffscreenPresentation extends Presentation {
OffscreenPresentation(Context context, Display display) {
super(context, display);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
getWindow()
.getDecorView()
.setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
} catch (Exception e) {
}
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
return ((VRBrowserActivity)mContext).dispatchKeyEvent(event);
}
}
}