gecko-dev/mobile/android/base/PresentationMediaPlayerManager.java
Robert O'Callahan 84a1b0dd5a Bug 1143575. Android's screenshotting code should invalidate the LayerManagerComposite to ensure composition will actually happen. r=nical
There is some ambiguity about whether ScheduleComposite will necessarily
trigger a composite all the way to nsWindow::DrawWindowUnderlay. Android
robocop tests assume it will, because they rely on DrawWindowOverlay
being called so they can take a screenshot and make progress,
but this is a very fragile assumption. They also rely on the entire
window being painted, which is also a fragile assumption.

This patch improves the situation by explicitly invalidating the current
window area when Android Java code needs to trigger a composite. This avoids
regressions from future patches in this series which make composition bail
out when there is nothing invalid.

The resulting setup is still a bit fragile for my taste but I'm not sure
what the ideal solution would be.

--HG--
extra : commitid : 3t3xqRdZs24
extra : rebase_source : b23749613663ca805484776ccf5e36b4ff00e3fe
2015-06-12 03:20:04 +12:00

118 lines
3.9 KiB
Java

/* -*- 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 file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko;
import android.annotation.TargetApi;
import android.app.Presentation;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.media.MediaRouter;
import android.util.Log;
import android.view.Display;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.ViewGroup;
import android.view.WindowManager;
import org.mozilla.gecko.AppConstants.Versions;
/**
* A MediaPlayerManager with API 17+ Presentation support.
*/
@TargetApi(17)
public class PresentationMediaPlayerManager extends MediaPlayerManager {
private static final String LOGTAG = "Gecko" + PresentationMediaPlayerManager.class.getSimpleName();
private GeckoPresentation presentation;
public PresentationMediaPlayerManager() {
if (!Versions.feature17Plus) {
throw new IllegalStateException(PresentationMediaPlayerManager.class.getSimpleName() +
" does not support < API 17");
}
}
@Override
public void onStop() {
super.onStop();
if (presentation != null) {
presentation.dismiss();
presentation = null;
}
}
@Override
protected void updatePresentation() {
if (mediaRouter == null) {
return;
}
MediaRouter.RouteInfo route = mediaRouter.getSelectedRoute();
Display display = route != null ? route.getPresentationDisplay() : null;
if (display != null) {
if ((presentation != null) && (presentation.getDisplay() != display)) {
presentation.dismiss();
presentation = null;
}
if (presentation == null) {
presentation = new GeckoPresentation(getActivity(), display);
try {
presentation.show();
} catch (WindowManager.InvalidDisplayException ex) {
Log.w(LOGTAG, "Couldn't show presentation! Display was removed in "
+ "the meantime.", ex);
presentation = null;
}
}
} else if (presentation != null) {
presentation.dismiss();
presentation = null;
}
}
private final static class GeckoPresentation extends Presentation {
private SurfaceView mView;
public GeckoPresentation(Context context, Display display) {
super(context, display);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mView = new SurfaceView(getContext());
setContentView(mView, new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
mView.getHolder().addCallback(new SurfaceListener());
}
}
private static class SurfaceListener implements SurfaceHolder.Callback {
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
// Surface changed so force a composite
GeckoAppShell.invalidateAndScheduleComposite();
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
GeckoAppShell.addPresentationSurface(holder.getSurface());
GeckoAppShell.invalidateAndScheduleComposite();
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
GeckoAppShell.removePresentationSurface(holder.getSurface());
}
}
}