gecko-dev/layout/generic/VisibilityIPC.h

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1.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/**
* Declares IPC serializers for the visibility-related types in Visibility.h.
* These are separated out to reduce the number of moz.build files that need to
* include chromium IPC headers, since Visibility.h is included from nsIFrame.h
* which is widely included.
*/
#ifndef mozilla_layout_generic_VisibilityIPC_h
#define mozilla_layout_generic_VisibilityIPC_h
#include "ipc/IPCMessageUtils.h"
#include "Visibility.h"
namespace IPC {
template<>
struct ParamTraits<mozilla::VisibilityCounter>
{
typedef mozilla::VisibilityCounter paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
WriteParam(aMsg, uint8_t(aParam));
}
static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult)
{
uint8_t valueAsByte;
if (ReadParam(aMsg, aIter, &valueAsByte)) {
*aResult = paramType(valueAsByte);
return true;
}
return false;
}
};
} // namespace IPC
#endif // mozilla_layout_generic_VisibilityIPC_h