mirror of
https://github.com/mozilla/gecko-dev.git
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142 lines
4.0 KiB
C++
142 lines
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <gtk/gtk.h>
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#include "nsIdleServiceGTK.h"
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#include "nsIServiceManager.h"
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#include "nsDebug.h"
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#include "prlink.h"
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#include "prlog.h"
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#ifdef PR_LOGGING
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static PRLogModuleInfo* sIdleLog = nullptr;
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#endif
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typedef bool (*_XScreenSaverQueryExtension_fn)(Display* dpy, int* event_base,
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int* error_base);
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typedef XScreenSaverInfo* (*_XScreenSaverAllocInfo_fn)(void);
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typedef void (*_XScreenSaverQueryInfo_fn)(Display* dpy, Drawable drw,
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XScreenSaverInfo *info);
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static bool sInitialized = false;
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static _XScreenSaverQueryExtension_fn _XSSQueryExtension = nullptr;
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static _XScreenSaverAllocInfo_fn _XSSAllocInfo = nullptr;
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static _XScreenSaverQueryInfo_fn _XSSQueryInfo = nullptr;
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NS_IMPL_ISUPPORTS_INHERITED0(nsIdleServiceGTK, nsIdleService)
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static void Initialize()
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{
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// This will leak - See comments in ~nsIdleServiceGTK().
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PRLibrary* xsslib = PR_LoadLibrary("libXss.so.1");
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if (!xsslib) // ouch.
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{
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#ifdef PR_LOGGING
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PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to find libXss.so!\n"));
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#endif
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return;
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}
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_XSSQueryExtension = (_XScreenSaverQueryExtension_fn)
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PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryExtension");
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_XSSAllocInfo = (_XScreenSaverAllocInfo_fn)
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PR_FindFunctionSymbol(xsslib, "XScreenSaverAllocInfo");
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_XSSQueryInfo = (_XScreenSaverQueryInfo_fn)
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PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryInfo");
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#ifdef PR_LOGGING
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if (!_XSSQueryExtension)
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PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSQueryExtension!\n"));
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if (!_XSSAllocInfo)
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PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSAllocInfo!\n"));
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if (!_XSSQueryInfo)
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PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSQueryInfo!\n"));
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#endif
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sInitialized = true;
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}
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nsIdleServiceGTK::nsIdleServiceGTK()
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: mXssInfo(nullptr)
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{
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#ifdef PR_LOGGING
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if (!sIdleLog)
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sIdleLog = PR_NewLogModule("nsIIdleService");
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#endif
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Initialize();
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}
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nsIdleServiceGTK::~nsIdleServiceGTK()
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{
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if (mXssInfo)
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XFree(mXssInfo);
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// It is not safe to unload libXScrnSaver until each display is closed because
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// the library registers callbacks through XESetCloseDisplay (Bug 397607).
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// (Also the library and its functions are scoped for the file not the object.)
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#if 0
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if (xsslib) {
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PR_UnloadLibrary(xsslib);
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xsslib = nullptr;
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}
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#endif
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}
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bool
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nsIdleServiceGTK::PollIdleTime(uint32_t *aIdleTime)
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{
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if (!sInitialized) {
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// For some reason, we could not find xscreensaver. This this might be
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// because we are on a mobile platforms (e.g. Maemo/OSSO). In this
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// case, let the base class handle it
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return false;
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}
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// Ask xscreensaver about idle time:
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*aIdleTime = 0;
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// We might not have a display (cf. in xpcshell)
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Display *dplay = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
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if (!dplay) {
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#ifdef PR_LOGGING
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PR_LOG(sIdleLog, PR_LOG_WARNING, ("No display found!\n"));
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#endif
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return false;
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}
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if (!_XSSQueryExtension || !_XSSAllocInfo || !_XSSQueryInfo) {
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return false;
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}
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int event_base, error_base;
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if (_XSSQueryExtension(dplay, &event_base, &error_base))
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{
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if (!mXssInfo)
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mXssInfo = _XSSAllocInfo();
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if (!mXssInfo)
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return false;
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_XSSQueryInfo(dplay, GDK_ROOT_WINDOW(), mXssInfo);
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*aIdleTime = mXssInfo->idle;
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return true;
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}
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// If we get here, we couldn't get to XScreenSaver:
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#ifdef PR_LOGGING
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PR_LOG(sIdleLog, PR_LOG_WARNING, ("XSSQueryExtension returned false!\n"));
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#endif
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return false;
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}
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bool
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nsIdleServiceGTK::UsePollMode()
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{
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return sInitialized;
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}
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