1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/qt/nsIdleServiceQt.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,123 @@
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 +#ifdef MOZ_X11
1.12 +#include "mozilla/X11Util.h"
1.13 +#endif
1.14 +#include "nsIdleServiceQt.h"
1.15 +#include "nsIServiceManager.h"
1.16 +#include "nsDebug.h"
1.17 +#include "prlink.h"
1.18 +
1.19 +#if defined(MOZ_X11)
1.20 +typedef bool (*_XScreenSaverQueryExtension_fn)(Display* dpy, int* event_base,
1.21 + int* error_base);
1.22 +
1.23 +typedef XScreenSaverInfo* (*_XScreenSaverAllocInfo_fn)(void);
1.24 +
1.25 +typedef void (*_XScreenSaverQueryInfo_fn)(Display* dpy, Drawable drw,
1.26 + XScreenSaverInfo *info);
1.27 +
1.28 +static _XScreenSaverQueryExtension_fn _XSSQueryExtension = nullptr;
1.29 +static _XScreenSaverAllocInfo_fn _XSSAllocInfo = nullptr;
1.30 +static _XScreenSaverQueryInfo_fn _XSSQueryInfo = nullptr;
1.31 +#endif
1.32 +
1.33 +static bool sInitialized = false;
1.34 +
1.35 +NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceQt, nsIdleService)
1.36 +
1.37 +nsIdleServiceQt::nsIdleServiceQt()
1.38 +#if defined(MOZ_X11)
1.39 + : mXssInfo(nullptr)
1.40 +#endif
1.41 +{
1.42 +}
1.43 +
1.44 +static void Initialize()
1.45 +{
1.46 + sInitialized = true;
1.47 +
1.48 +#if defined(MOZ_X11)
1.49 + // This will leak - See comments in ~nsIdleServiceQt().
1.50 + PRLibrary* xsslib = PR_LoadLibrary("libXss.so.1");
1.51 + if (!xsslib) {
1.52 + return;
1.53 + }
1.54 +
1.55 + _XSSQueryExtension = (_XScreenSaverQueryExtension_fn)
1.56 + PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryExtension");
1.57 + _XSSAllocInfo = (_XScreenSaverAllocInfo_fn)
1.58 + PR_FindFunctionSymbol(xsslib, "XScreenSaverAllocInfo");
1.59 + _XSSQueryInfo = (_XScreenSaverQueryInfo_fn)
1.60 + PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryInfo");
1.61 +#endif
1.62 +}
1.63 +
1.64 +nsIdleServiceQt::~nsIdleServiceQt()
1.65 +{
1.66 +#if defined(MOZ_X11)
1.67 + if (mXssInfo)
1.68 + XFree(mXssInfo);
1.69 +
1.70 +// It is not safe to unload libXScrnSaver until each display is closed because
1.71 +// the library registers callbacks through XESetCloseDisplay (Bug 397607).
1.72 +// (Also the library and its functions are scoped for the file not the object.)
1.73 +#if 0
1.74 + if (xsslib) {
1.75 + PR_UnloadLibrary(xsslib);
1.76 + xsslib = nullptr;
1.77 + }
1.78 +#endif
1.79 +#endif
1.80 +}
1.81 +
1.82 +bool
1.83 +nsIdleServiceQt::PollIdleTime(uint32_t *aIdleTime)
1.84 +{
1.85 +#if defined(MOZ_X11)
1.86 + // Ask xscreensaver about idle time:
1.87 + *aIdleTime = 0;
1.88 +
1.89 + // We might not have a display (cf. in xpcshell)
1.90 + Display *dplay = mozilla::DefaultXDisplay();
1.91 + if (!dplay) {
1.92 + return false;
1.93 + }
1.94 +
1.95 + if (!sInitialized) {
1.96 + Initialize();
1.97 + }
1.98 + if (!_XSSQueryExtension || !_XSSAllocInfo || !_XSSQueryInfo) {
1.99 + return false;
1.100 + }
1.101 +
1.102 + int event_base, error_base;
1.103 + if (_XSSQueryExtension(dplay, &event_base, &error_base)) {
1.104 + if (!mXssInfo)
1.105 + mXssInfo = _XSSAllocInfo();
1.106 + if (!mXssInfo)
1.107 + return false;
1.108 +
1.109 + _XSSQueryInfo(dplay, RootWindowOfScreen(DefaultScreenOfDisplay(mozilla::DefaultXDisplay())), mXssInfo);
1.110 + *aIdleTime = mXssInfo->idle;
1.111 + return true;
1.112 + }
1.113 +#endif
1.114 +
1.115 + return false;
1.116 +}
1.117 +
1.118 +bool
1.119 +nsIdleServiceQt::UsePollMode()
1.120 +{
1.121 +#if defined(MOZ_X11)
1.122 + return false;
1.123 +#endif
1.124 + return true;
1.125 +}
1.126 +
