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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /widget/gtk/nsIdleServiceGTK.cpp | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
download | uxp-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz |
Add m-esr52 at 52.6.0
Diffstat (limited to 'widget/gtk/nsIdleServiceGTK.cpp')
-rw-r--r-- | widget/gtk/nsIdleServiceGTK.cpp | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/widget/gtk/nsIdleServiceGTK.cpp b/widget/gtk/nsIdleServiceGTK.cpp new file mode 100644 index 0000000000..6b6832c822 --- /dev/null +++ b/widget/gtk/nsIdleServiceGTK.cpp @@ -0,0 +1,132 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* vim:expandtab:shiftwidth=4:tabstop=4: + */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include <gtk/gtk.h> + +#include "nsIdleServiceGTK.h" +#include "nsIServiceManager.h" +#include "nsDebug.h" +#include "prlink.h" +#include "mozilla/Logging.h" + +using mozilla::LogLevel; + +static PRLogModuleInfo* sIdleLog = nullptr; + +typedef bool (*_XScreenSaverQueryExtension_fn)(Display* dpy, int* event_base, + int* error_base); + +typedef XScreenSaverInfo* (*_XScreenSaverAllocInfo_fn)(void); + +typedef void (*_XScreenSaverQueryInfo_fn)(Display* dpy, Drawable drw, + XScreenSaverInfo *info); + +static bool sInitialized = false; +static _XScreenSaverQueryExtension_fn _XSSQueryExtension = nullptr; +static _XScreenSaverAllocInfo_fn _XSSAllocInfo = nullptr; +static _XScreenSaverQueryInfo_fn _XSSQueryInfo = nullptr; + +NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceGTK, nsIdleService) + +static void Initialize() +{ + if (!GDK_IS_X11_DISPLAY(gdk_display_get_default())) + return; + + // This will leak - See comments in ~nsIdleServiceGTK(). + PRLibrary* xsslib = PR_LoadLibrary("libXss.so.1"); + if (!xsslib) // ouch. + { + MOZ_LOG(sIdleLog, LogLevel::Warning, ("Failed to find libXss.so!\n")); + return; + } + + _XSSQueryExtension = (_XScreenSaverQueryExtension_fn) + PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryExtension"); + _XSSAllocInfo = (_XScreenSaverAllocInfo_fn) + PR_FindFunctionSymbol(xsslib, "XScreenSaverAllocInfo"); + _XSSQueryInfo = (_XScreenSaverQueryInfo_fn) + PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryInfo"); + + if (!_XSSQueryExtension) + MOZ_LOG(sIdleLog, LogLevel::Warning, ("Failed to get XSSQueryExtension!\n")); + if (!_XSSAllocInfo) + MOZ_LOG(sIdleLog, LogLevel::Warning, ("Failed to get XSSAllocInfo!\n")); + if (!_XSSQueryInfo) + MOZ_LOG(sIdleLog, LogLevel::Warning, ("Failed to get XSSQueryInfo!\n")); + + sInitialized = true; +} + +nsIdleServiceGTK::nsIdleServiceGTK() + : mXssInfo(nullptr) +{ + if (!sIdleLog) + sIdleLog = PR_NewLogModule("nsIIdleService"); + + Initialize(); +} + +nsIdleServiceGTK::~nsIdleServiceGTK() +{ + if (mXssInfo) + XFree(mXssInfo); + +// It is not safe to unload libXScrnSaver until each display is closed because +// the library registers callbacks through XESetCloseDisplay (Bug 397607). +// (Also the library and its functions are scoped for the file not the object.) +#if 0 + if (xsslib) { + PR_UnloadLibrary(xsslib); + xsslib = nullptr; + } +#endif +} + +bool +nsIdleServiceGTK::PollIdleTime(uint32_t *aIdleTime) +{ + if (!sInitialized) { + // For some reason, we could not find xscreensaver. + return false; + } + + // Ask xscreensaver about idle time: + *aIdleTime = 0; + + // We might not have a display (cf. in xpcshell) + Display *dplay = GDK_DISPLAY_XDISPLAY(gdk_display_get_default()); + if (!dplay) { + MOZ_LOG(sIdleLog, LogLevel::Warning, ("No display found!\n")); + return false; + } + + if (!_XSSQueryExtension || !_XSSAllocInfo || !_XSSQueryInfo) { + return false; + } + + int event_base, error_base; + if (_XSSQueryExtension(dplay, &event_base, &error_base)) + { + if (!mXssInfo) + mXssInfo = _XSSAllocInfo(); + if (!mXssInfo) + return false; + _XSSQueryInfo(dplay, GDK_ROOT_WINDOW(), mXssInfo); + *aIdleTime = mXssInfo->idle; + return true; + } + // If we get here, we couldn't get to XScreenSaver: + MOZ_LOG(sIdleLog, LogLevel::Warning, ("XSSQueryExtension returned false!\n")); + return false; +} + +bool +nsIdleServiceGTK::UsePollMode() +{ + return sInitialized; +} |