1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/gtk/nsIdleServiceGTK.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,139 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* vim:expandtab:shiftwidth=4:tabstop=4:
1.6 + */
1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#include <gtk/gtk.h>
1.12 +
1.13 +#include "nsIdleServiceGTK.h"
1.14 +#include "nsIServiceManager.h"
1.15 +#include "nsDebug.h"
1.16 +#include "prlink.h"
1.17 +#include "prlog.h"
1.18 +
1.19 +#ifdef PR_LOGGING
1.20 +static PRLogModuleInfo* sIdleLog = nullptr;
1.21 +#endif
1.22 +
1.23 +typedef bool (*_XScreenSaverQueryExtension_fn)(Display* dpy, int* event_base,
1.24 + int* error_base);
1.25 +
1.26 +typedef XScreenSaverInfo* (*_XScreenSaverAllocInfo_fn)(void);
1.27 +
1.28 +typedef void (*_XScreenSaverQueryInfo_fn)(Display* dpy, Drawable drw,
1.29 + XScreenSaverInfo *info);
1.30 +
1.31 +static bool sInitialized = false;
1.32 +static _XScreenSaverQueryExtension_fn _XSSQueryExtension = nullptr;
1.33 +static _XScreenSaverAllocInfo_fn _XSSAllocInfo = nullptr;
1.34 +static _XScreenSaverQueryInfo_fn _XSSQueryInfo = nullptr;
1.35 +
1.36 +NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceGTK, nsIdleService)
1.37 +
1.38 +static void Initialize()
1.39 +{
1.40 + // This will leak - See comments in ~nsIdleServiceGTK().
1.41 + PRLibrary* xsslib = PR_LoadLibrary("libXss.so.1");
1.42 + if (!xsslib) // ouch.
1.43 + {
1.44 +#ifdef PR_LOGGING
1.45 + PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to find libXss.so!\n"));
1.46 +#endif
1.47 + return;
1.48 + }
1.49 +
1.50 + _XSSQueryExtension = (_XScreenSaverQueryExtension_fn)
1.51 + PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryExtension");
1.52 + _XSSAllocInfo = (_XScreenSaverAllocInfo_fn)
1.53 + PR_FindFunctionSymbol(xsslib, "XScreenSaverAllocInfo");
1.54 + _XSSQueryInfo = (_XScreenSaverQueryInfo_fn)
1.55 + PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryInfo");
1.56 +#ifdef PR_LOGGING
1.57 + if (!_XSSQueryExtension)
1.58 + PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSQueryExtension!\n"));
1.59 + if (!_XSSAllocInfo)
1.60 + PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSAllocInfo!\n"));
1.61 + if (!_XSSQueryInfo)
1.62 + PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSQueryInfo!\n"));
1.63 +#endif
1.64 +
1.65 + sInitialized = true;
1.66 +}
1.67 +
1.68 +nsIdleServiceGTK::nsIdleServiceGTK()
1.69 + : mXssInfo(nullptr)
1.70 +{
1.71 +#ifdef PR_LOGGING
1.72 + if (!sIdleLog)
1.73 + sIdleLog = PR_NewLogModule("nsIIdleService");
1.74 +#endif
1.75 +
1.76 + Initialize();
1.77 +}
1.78 +
1.79 +nsIdleServiceGTK::~nsIdleServiceGTK()
1.80 +{
1.81 + if (mXssInfo)
1.82 + XFree(mXssInfo);
1.83 +
1.84 +// It is not safe to unload libXScrnSaver until each display is closed because
1.85 +// the library registers callbacks through XESetCloseDisplay (Bug 397607).
1.86 +// (Also the library and its functions are scoped for the file not the object.)
1.87 +#if 0
1.88 + if (xsslib) {
1.89 + PR_UnloadLibrary(xsslib);
1.90 + xsslib = nullptr;
1.91 + }
1.92 +#endif
1.93 +}
1.94 +
1.95 +bool
1.96 +nsIdleServiceGTK::PollIdleTime(uint32_t *aIdleTime)
1.97 +{
1.98 + if (!sInitialized) {
1.99 + // For some reason, we could not find xscreensaver.
1.100 + return false;
1.101 + }
1.102 +
1.103 + // Ask xscreensaver about idle time:
1.104 + *aIdleTime = 0;
1.105 +
1.106 + // We might not have a display (cf. in xpcshell)
1.107 + Display *dplay = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
1.108 + if (!dplay) {
1.109 +#ifdef PR_LOGGING
1.110 + PR_LOG(sIdleLog, PR_LOG_WARNING, ("No display found!\n"));
1.111 +#endif
1.112 + return false;
1.113 + }
1.114 +
1.115 + if (!_XSSQueryExtension || !_XSSAllocInfo || !_XSSQueryInfo) {
1.116 + return false;
1.117 + }
1.118 +
1.119 + int event_base, error_base;
1.120 + if (_XSSQueryExtension(dplay, &event_base, &error_base))
1.121 + {
1.122 + if (!mXssInfo)
1.123 + mXssInfo = _XSSAllocInfo();
1.124 + if (!mXssInfo)
1.125 + return false;
1.126 + _XSSQueryInfo(dplay, GDK_ROOT_WINDOW(), mXssInfo);
1.127 + *aIdleTime = mXssInfo->idle;
1.128 + return true;
1.129 + }
1.130 + // If we get here, we couldn't get to XScreenSaver:
1.131 +#ifdef PR_LOGGING
1.132 + PR_LOG(sIdleLog, PR_LOG_WARNING, ("XSSQueryExtension returned false!\n"));
1.133 +#endif
1.134 + return false;
1.135 +}
1.136 +
1.137 +bool
1.138 +nsIdleServiceGTK::UsePollMode()
1.139 +{
1.140 + return sInitialized;
1.141 +}
1.142 +
