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/* -*- Mode: c++; c-basic-offset: 2; tab-width: 20; 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/. */
#ifndef SurfaceViewWrapperSupport_h__
#define SurfaceViewWrapperSupport_h__
#include "mozilla/java/SurfaceViewWrapperNatives.h"
#include <android/native_window.h>
#include <android/native_window_jni.h>
namespace mozilla {
namespace widget {
class SurfaceViewWrapperSupport final
: public java::SurfaceViewWrapper::Natives<SurfaceViewWrapperSupport> {
public:
static bool IsSurfaceAbandoned(jni::Object::Param aSurface) {
ANativeWindow* win =
ANativeWindow_fromSurface(jni::GetEnvForThread(), aSurface.Get());
if (!win) {
return true;
}
// If the Surface's underlying BufferQueue has been abandoned, then
// ANativeWindow_getWidth (or height) will return a negative value
// to indicate an error.
int32_t width = ANativeWindow_getWidth(win);
ANativeWindow_release(win);
return width < 0;
}
};
} // namespace widget
} // namespace mozilla
#endif // SurfaceViewWrapperSupport_h__
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