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135 lines
4.2 KiB
C++
135 lines
4.2 KiB
C++
/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
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/* vim: set sw=4 ts=8 et tw=80 ft=cpp : */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Plugin App.
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*
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* The Initial Developer of the Original Code is
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* The Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Chris Jones <jones.chris.g@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef mozilla_dom_plugins_NPEventX11_h
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#define mozilla_dom_plugins_NPEventX11_h 1
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#if defined(MOZ_WIDGET_GTK2)
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# include <gdk/gdkx.h>
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#else
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# error Implement me for your toolkit
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#endif
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#include "npapi.h"
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//
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// XEvent is defined as a union of all more specific X*Events.
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// Luckily, as of xorg 1.6.0 / X protocol 11 rev 0, the only pointer
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// field contained in any of these specific X*Event structs is a
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// |Display*|. So to simplify serializing these XEvents, we make the
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//
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// ********** XXX ASSUMPTION XXX **********
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//
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// that the process to which the event is forwarded shares the same
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// display as the process on which the event originated.
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//
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// With this simplification, serialization becomes a simple memcpy to
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// the output stream. Deserialization starts as just a memcpy from
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// the input stream, BUT we then have to write the correct |Display*|
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// into the right field of each X*Event that contains one.
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//
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namespace IPC {
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template <>
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struct ParamTraits<NPEvent> // synonym for XEvent
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{
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typedef NPEvent paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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aMsg->WriteBytes(&aParam, sizeof(paramType));
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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const char* bytes = 0;
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if (!aMsg->ReadBytes(aIter, &bytes, sizeof(paramType))) {
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return false;
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}
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memcpy(aResult, bytes, sizeof(paramType));
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SetXDisplay(*aResult);
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return true;
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}
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static void Log(const paramType& aParam, std::wstring* aLog)
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{
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// TODO
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aLog->append(L"(XEvent)");
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}
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private:
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static Display* GetXDisplay(const XAnyEvent& ev)
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{
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// TODO: get Display* from Window in |ev|
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// FIXME: do this using Xlib, don't use Gdk
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return GDK_DISPLAY();
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}
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static Display* GetXDisplay(const XErrorEvent& ev)
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{
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// TODO: get Display* from Window in |ev|
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// FIXME: do this using Xlib, don't use Gdk
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return GDK_DISPLAY();
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}
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static void SetXDisplay(XEvent& ev)
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{
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if (ev.type >= KeyPress) {
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ev.xany.display = GetXDisplay(ev.xany);
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}
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else {
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// XXX assuming that this is an error event
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// (type == 0? not clear from Xlib.h)
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ev.xerror.display = GetXDisplay(ev.xerror);
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}
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}
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};
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} // namespace IPC
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#endif // ifndef mozilla_dom_plugins_NPEventX11_h
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