1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/plugins/ipc/NPEventUnix.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,100 @@
1.4 +/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
1.5 +/* vim: set sw=4 ts=8 et tw=80 ft=cpp : */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef mozilla_dom_plugins_NPEventUnix_h
1.11 +#define mozilla_dom_plugins_NPEventUnix_h 1
1.12 +
1.13 +#include "npapi.h"
1.14 +
1.15 +#ifdef MOZ_X11
1.16 +#include "mozilla/X11Util.h"
1.17 +#endif
1.18 +
1.19 +namespace mozilla {
1.20 +
1.21 +namespace plugins {
1.22 +
1.23 +struct NPRemoteEvent {
1.24 + NPEvent event;
1.25 +};
1.26 +
1.27 +}
1.28 +
1.29 +}
1.30 +
1.31 +
1.32 +//
1.33 +// XEvent is defined as a union of all more specific X*Events.
1.34 +// Luckily, as of xorg 1.6.0 / X protocol 11 rev 0, the only pointer
1.35 +// field contained in any of these specific X*Event structs is a
1.36 +// |Display*|. So to simplify serializing these XEvents, we make the
1.37 +//
1.38 +// ********** XXX ASSUMPTION XXX **********
1.39 +//
1.40 +// that the process to which the event is forwarded shares the same
1.41 +// display as the process on which the event originated.
1.42 +//
1.43 +// With this simplification, serialization becomes a simple memcpy to
1.44 +// the output stream. Deserialization starts as just a memcpy from
1.45 +// the input stream, BUT we then have to write the correct |Display*|
1.46 +// into the right field of each X*Event that contains one.
1.47 +//
1.48 +
1.49 +namespace IPC {
1.50 +
1.51 +template <>
1.52 +struct ParamTraits<mozilla::plugins::NPRemoteEvent> // synonym for XEvent
1.53 +{
1.54 + typedef mozilla::plugins::NPRemoteEvent paramType;
1.55 +
1.56 + static void Write(Message* aMsg, const paramType& aParam)
1.57 + {
1.58 + aMsg->WriteBytes(&aParam, sizeof(paramType));
1.59 + }
1.60 +
1.61 + static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
1.62 + {
1.63 + const char* bytes = 0;
1.64 +
1.65 + if (!aMsg->ReadBytes(aIter, &bytes, sizeof(paramType))) {
1.66 + return false;
1.67 + }
1.68 +
1.69 + memcpy(aResult, bytes, sizeof(paramType));
1.70 +
1.71 +#ifdef MOZ_X11
1.72 + SetXDisplay(aResult->event);
1.73 +#endif
1.74 + return true;
1.75 + }
1.76 +
1.77 + static void Log(const paramType& aParam, std::wstring* aLog)
1.78 + {
1.79 + // TODO
1.80 + aLog->append(L"(XEvent)");
1.81 + }
1.82 +
1.83 +#ifdef MOZ_X11
1.84 +private:
1.85 + static void SetXDisplay(XEvent& ev)
1.86 + {
1.87 + Display* display = mozilla::DefaultXDisplay();
1.88 + if (ev.type >= KeyPress) {
1.89 + ev.xany.display = display;
1.90 + }
1.91 + else {
1.92 + // XXX assuming that this is an error event
1.93 + // (type == 0? not clear from Xlib.h)
1.94 + ev.xerror.display = display;
1.95 + }
1.96 + }
1.97 +#endif
1.98 +};
1.99 +
1.100 +} // namespace IPC
1.101 +
1.102 +
1.103 +#endif // ifndef mozilla_dom_plugins_NPEventX11_h
