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comparison: widget/gtk/nsIdleServiceGTK.cpp
widget/gtk/nsIdleServiceGTK.cpp
- changeset 0
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| -1:000000000000 | 0:9dfc178b5fba |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* vim:expandtab:shiftwidth=4:tabstop=4: | |
| 3 */ | |
| 4 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 7 | |
| 8 #include <gtk/gtk.h> | |
| 9 | |
| 10 #include "nsIdleServiceGTK.h" | |
| 11 #include "nsIServiceManager.h" | |
| 12 #include "nsDebug.h" | |
| 13 #include "prlink.h" | |
| 14 #include "prlog.h" | |
| 15 | |
| 16 #ifdef PR_LOGGING | |
| 17 static PRLogModuleInfo* sIdleLog = nullptr; | |
| 18 #endif | |
| 19 | |
| 20 typedef bool (*_XScreenSaverQueryExtension_fn)(Display* dpy, int* event_base, | |
| 21 int* error_base); | |
| 22 | |
| 23 typedef XScreenSaverInfo* (*_XScreenSaverAllocInfo_fn)(void); | |
| 24 | |
| 25 typedef void (*_XScreenSaverQueryInfo_fn)(Display* dpy, Drawable drw, | |
| 26 XScreenSaverInfo *info); | |
| 27 | |
| 28 static bool sInitialized = false; | |
| 29 static _XScreenSaverQueryExtension_fn _XSSQueryExtension = nullptr; | |
| 30 static _XScreenSaverAllocInfo_fn _XSSAllocInfo = nullptr; | |
| 31 static _XScreenSaverQueryInfo_fn _XSSQueryInfo = nullptr; | |
| 32 | |
| 33 NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceGTK, nsIdleService) | |
| 34 | |
| 35 static void Initialize() | |
| 36 { | |
| 37 // This will leak - See comments in ~nsIdleServiceGTK(). | |
| 38 PRLibrary* xsslib = PR_LoadLibrary("libXss.so.1"); | |
| 39 if (!xsslib) // ouch. | |
| 40 { | |
| 41 #ifdef PR_LOGGING | |
| 42 PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to find libXss.so!\n")); | |
| 43 #endif | |
| 44 return; | |
| 45 } | |
| 46 | |
| 47 _XSSQueryExtension = (_XScreenSaverQueryExtension_fn) | |
| 48 PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryExtension"); | |
| 49 _XSSAllocInfo = (_XScreenSaverAllocInfo_fn) | |
| 50 PR_FindFunctionSymbol(xsslib, "XScreenSaverAllocInfo"); | |
| 51 _XSSQueryInfo = (_XScreenSaverQueryInfo_fn) | |
| 52 PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryInfo"); | |
| 53 #ifdef PR_LOGGING | |
| 54 if (!_XSSQueryExtension) | |
| 55 PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSQueryExtension!\n")); | |
| 56 if (!_XSSAllocInfo) | |
| 57 PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSAllocInfo!\n")); | |
| 58 if (!_XSSQueryInfo) | |
| 59 PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSQueryInfo!\n")); | |
| 60 #endif | |
| 61 | |
| 62 sInitialized = true; | |
| 63 } | |
| 64 | |
| 65 nsIdleServiceGTK::nsIdleServiceGTK() | |
| 66 : mXssInfo(nullptr) | |
| 67 { | |
| 68 #ifdef PR_LOGGING | |
| 69 if (!sIdleLog) | |
| 70 sIdleLog = PR_NewLogModule("nsIIdleService"); | |
| 71 #endif | |
| 72 | |
| 73 Initialize(); | |
| 74 } | |
| 75 | |
| 76 nsIdleServiceGTK::~nsIdleServiceGTK() | |
| 77 { | |
| 78 if (mXssInfo) | |
| 79 XFree(mXssInfo); | |
| 80 | |
| 81 // It is not safe to unload libXScrnSaver until each display is closed because | |
| 82 // the library registers callbacks through XESetCloseDisplay (Bug 397607). | |
| 83 // (Also the library and its functions are scoped for the file not the object.) | |
| 84 #if 0 | |
| 85 if (xsslib) { | |
| 86 PR_UnloadLibrary(xsslib); | |
| 87 xsslib = nullptr; | |
| 88 } | |
| 89 #endif | |
| 90 } | |
| 91 | |
| 92 bool | |
| 93 nsIdleServiceGTK::PollIdleTime(uint32_t *aIdleTime) | |
| 94 { | |
| 95 if (!sInitialized) { | |
| 96 // For some reason, we could not find xscreensaver. | |
| 97 return false; | |
| 98 } | |
| 99 | |
| 100 // Ask xscreensaver about idle time: | |
| 101 *aIdleTime = 0; | |
| 102 | |
| 103 // We might not have a display (cf. in xpcshell) | |
| 104 Display *dplay = GDK_DISPLAY_XDISPLAY(gdk_display_get_default()); | |
| 105 if (!dplay) { | |
| 106 #ifdef PR_LOGGING | |
| 107 PR_LOG(sIdleLog, PR_LOG_WARNING, ("No display found!\n")); | |
| 108 #endif | |
| 109 return false; | |
| 110 } | |
| 111 | |
| 112 if (!_XSSQueryExtension || !_XSSAllocInfo || !_XSSQueryInfo) { | |
| 113 return false; | |
| 114 } | |
| 115 | |
| 116 int event_base, error_base; | |
| 117 if (_XSSQueryExtension(dplay, &event_base, &error_base)) | |
| 118 { | |
| 119 if (!mXssInfo) | |
| 120 mXssInfo = _XSSAllocInfo(); | |
| 121 if (!mXssInfo) | |
| 122 return false; | |
| 123 _XSSQueryInfo(dplay, GDK_ROOT_WINDOW(), mXssInfo); | |
| 124 *aIdleTime = mXssInfo->idle; | |
| 125 return true; | |
| 126 } | |
| 127 // If we get here, we couldn't get to XScreenSaver: | |
| 128 #ifdef PR_LOGGING | |
| 129 PR_LOG(sIdleLog, PR_LOG_WARNING, ("XSSQueryExtension returned false!\n")); | |
| 130 #endif | |
| 131 return false; | |
| 132 } | |
| 133 | |
| 134 bool | |
| 135 nsIdleServiceGTK::UsePollMode() | |
| 136 { | |
| 137 return sInitialized; | |
| 138 } | |
| 139 |
