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comparison: dom/plugins/ipc/NPEventUnix.h
dom/plugins/ipc/NPEventUnix.h
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- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:f8daac30855d |
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| 1 /* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */ | |
| 2 /* vim: set sw=4 ts=8 et tw=80 ft=cpp : */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef mozilla_dom_plugins_NPEventUnix_h | |
| 8 #define mozilla_dom_plugins_NPEventUnix_h 1 | |
| 9 | |
| 10 #include "npapi.h" | |
| 11 | |
| 12 #ifdef MOZ_X11 | |
| 13 #include "mozilla/X11Util.h" | |
| 14 #endif | |
| 15 | |
| 16 namespace mozilla { | |
| 17 | |
| 18 namespace plugins { | |
| 19 | |
| 20 struct NPRemoteEvent { | |
| 21 NPEvent event; | |
| 22 }; | |
| 23 | |
| 24 } | |
| 25 | |
| 26 } | |
| 27 | |
| 28 | |
| 29 // | |
| 30 // XEvent is defined as a union of all more specific X*Events. | |
| 31 // Luckily, as of xorg 1.6.0 / X protocol 11 rev 0, the only pointer | |
| 32 // field contained in any of these specific X*Event structs is a | |
| 33 // |Display*|. So to simplify serializing these XEvents, we make the | |
| 34 // | |
| 35 // ********** XXX ASSUMPTION XXX ********** | |
| 36 // | |
| 37 // that the process to which the event is forwarded shares the same | |
| 38 // display as the process on which the event originated. | |
| 39 // | |
| 40 // With this simplification, serialization becomes a simple memcpy to | |
| 41 // the output stream. Deserialization starts as just a memcpy from | |
| 42 // the input stream, BUT we then have to write the correct |Display*| | |
| 43 // into the right field of each X*Event that contains one. | |
| 44 // | |
| 45 | |
| 46 namespace IPC { | |
| 47 | |
| 48 template <> | |
| 49 struct ParamTraits<mozilla::plugins::NPRemoteEvent> // synonym for XEvent | |
| 50 { | |
| 51 typedef mozilla::plugins::NPRemoteEvent paramType; | |
| 52 | |
| 53 static void Write(Message* aMsg, const paramType& aParam) | |
| 54 { | |
| 55 aMsg->WriteBytes(&aParam, sizeof(paramType)); | |
| 56 } | |
| 57 | |
| 58 static bool Read(const Message* aMsg, void** aIter, paramType* aResult) | |
| 59 { | |
| 60 const char* bytes = 0; | |
| 61 | |
| 62 if (!aMsg->ReadBytes(aIter, &bytes, sizeof(paramType))) { | |
| 63 return false; | |
| 64 } | |
| 65 | |
| 66 memcpy(aResult, bytes, sizeof(paramType)); | |
| 67 | |
| 68 #ifdef MOZ_X11 | |
| 69 SetXDisplay(aResult->event); | |
| 70 #endif | |
| 71 return true; | |
| 72 } | |
| 73 | |
| 74 static void Log(const paramType& aParam, std::wstring* aLog) | |
| 75 { | |
| 76 // TODO | |
| 77 aLog->append(L"(XEvent)"); | |
| 78 } | |
| 79 | |
| 80 #ifdef MOZ_X11 | |
| 81 private: | |
| 82 static void SetXDisplay(XEvent& ev) | |
| 83 { | |
| 84 Display* display = mozilla::DefaultXDisplay(); | |
| 85 if (ev.type >= KeyPress) { | |
| 86 ev.xany.display = display; | |
| 87 } | |
| 88 else { | |
| 89 // XXX assuming that this is an error event | |
| 90 // (type == 0? not clear from Xlib.h) | |
| 91 ev.xerror.display = display; | |
| 92 } | |
| 93 } | |
| 94 #endif | |
| 95 }; | |
| 96 | |
| 97 } // namespace IPC | |
| 98 | |
| 99 | |
| 100 #endif // ifndef mozilla_dom_plugins_NPEventX11_h |
