widget/WidgetMessageUtils.h
author Alex Gaynor <agaynor@mozilla.com>
Mon, 09 Apr 2018 10:48:09 -0400
changeset 412525 a2385811ffdc30f153b8d5853f198c89020bf5ce
parent 412064 055d507f2e35e4482614c4eba09d8e473e9850e3
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1445234 - Use ContiguousEnumSerializer for serializing nsCursor. r=smaug

/* 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 mozilla_WidgetMessageUtils_h
#define mozilla_WidgetMessageUtils_h

#include "ipc/IPCMessageUtils.h"
#include "mozilla/LookAndFeel.h"
#include "nsIWidget.h"

namespace IPC {

template<>
struct ParamTraits<LookAndFeelInt>
{
  typedef LookAndFeelInt paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, aParam.id);
    WriteParam(aMsg, aParam.value);
  }

  static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult)
  {
    int32_t id, value;
    if (ReadParam(aMsg, aIter, &id) &&
        ReadParam(aMsg, aIter, &value)) {
      aResult->id = id;
      aResult->value = value;
      return true;
    }
    return false;
  }
};

template<>
struct ParamTraits<nsTransparencyMode> : public ContiguousEnumSerializerInclusive<nsTransparencyMode, eTransparencyOpaque, eTransparencyBorderlessGlass>
{ };

template<>
struct ParamTraits<nsCursor>
  : public ContiguousEnumSerializer<nsCursor, eCursor_standard, eCursorCount>
{
};

} // namespace IPC

#endif // WidgetMessageUtils_h