michael@0: /* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
michael@0: /* vim: set sw=4 ts=8 et tw=80 ft=cpp : */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_dom_plugins_NPEventUnix_h
michael@0: #define mozilla_dom_plugins_NPEventUnix_h 1
michael@0: 
michael@0: #include "npapi.h"
michael@0: 
michael@0: #ifdef MOZ_X11
michael@0: #include "mozilla/X11Util.h"
michael@0: #endif
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: namespace plugins {
michael@0: 
michael@0: struct NPRemoteEvent {
michael@0:     NPEvent event;
michael@0: };
michael@0: 
michael@0: }
michael@0: 
michael@0: }
michael@0: 
michael@0: 
michael@0: //
michael@0: // XEvent is defined as a union of all more specific X*Events.
michael@0: // Luckily, as of xorg 1.6.0 / X protocol 11 rev 0, the only pointer
michael@0: // field contained in any of these specific X*Event structs is a
michael@0: // |Display*|.  So to simplify serializing these XEvents, we make the
michael@0: // 
michael@0: // ********** XXX ASSUMPTION XXX **********
michael@0: //
michael@0: // that the process to which the event is forwarded shares the same
michael@0: // display as the process on which the event originated.
michael@0: //
michael@0: // With this simplification, serialization becomes a simple memcpy to
michael@0: // the output stream.  Deserialization starts as just a memcpy from
michael@0: // the input stream, BUT we then have to write the correct |Display*|
michael@0: // into the right field of each X*Event that contains one.
michael@0: //
michael@0: 
michael@0: namespace IPC {
michael@0: 
michael@0: template <>
michael@0: struct ParamTraits<mozilla::plugins::NPRemoteEvent>     // synonym for XEvent
michael@0: {
michael@0:     typedef mozilla::plugins::NPRemoteEvent paramType;
michael@0: 
michael@0:     static void Write(Message* aMsg, const paramType& aParam)
michael@0:     {
michael@0:         aMsg->WriteBytes(&aParam, sizeof(paramType));
michael@0:     }
michael@0: 
michael@0:     static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
michael@0:     {
michael@0:         const char* bytes = 0;
michael@0: 
michael@0:         if (!aMsg->ReadBytes(aIter, &bytes, sizeof(paramType))) {
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         memcpy(aResult, bytes, sizeof(paramType));
michael@0: 
michael@0: #ifdef MOZ_X11
michael@0:         SetXDisplay(aResult->event);
michael@0: #endif
michael@0:         return true;
michael@0:     }
michael@0: 
michael@0:     static void Log(const paramType& aParam, std::wstring* aLog)
michael@0:     {
michael@0:         // TODO
michael@0:         aLog->append(L"(XEvent)");
michael@0:     }
michael@0: 
michael@0: #ifdef MOZ_X11
michael@0: private:
michael@0:     static void SetXDisplay(XEvent& ev)
michael@0:     {
michael@0:         Display* display = mozilla::DefaultXDisplay();
michael@0:         if (ev.type >= KeyPress) {
michael@0:             ev.xany.display = display;
michael@0:         }
michael@0:         else {
michael@0:             // XXX assuming that this is an error event
michael@0:             // (type == 0? not clear from Xlib.h)
michael@0:             ev.xerror.display = display;
michael@0:         }
michael@0:     }
michael@0: #endif
michael@0: };
michael@0: 
michael@0: } // namespace IPC
michael@0: 
michael@0: 
michael@0: #endif // ifndef mozilla_dom_plugins_NPEventX11_h