LCOV - code coverage report
Current view: directory - widget/gtk2 - nsIdleServiceGTK.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 48 27 56.2 %
Date: 2012-06-02 Functions: 9 8 88.9 %

       1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 : /* vim:expandtab:shiftwidth=4:tabstop=4:
       3                 :  */
       4                 : /* ***** BEGIN LICENSE BLOCK *****
       5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       6                 :  *
       7                 :  * The contents of this file are subject to the Mozilla Public License Version
       8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       9                 :  * the License. You may obtain a copy of the License at
      10                 :  * http://www.mozilla.org/MPL/
      11                 :  *
      12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      14                 :  * for the specific language governing rights and limitations under the
      15                 :  * License.
      16                 :  *
      17                 :  * The Original Code is mozilla.org code.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  * Gijs Kruitbosch <gijskruitbosch@gmail.com>.
      21                 :  * Portions created by the Initial Developer are Copyright (C) 2007
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *  Gijs Kruitbosch <gijskruitbosch@gmail.com> 
      26                 :  *
      27                 :  * Alternatively, the contents of this file may be used under the terms of
      28                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      29                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      31                 :  * of those above. If you wish to allow use of your version of this file only
      32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      33                 :  * use your version of this file under the terms of the MPL, indicate your
      34                 :  * decision by deleting the provisions above and replace them with the notice
      35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      36                 :  * the provisions above, a recipient may use your version of this file under
      37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      38                 :  *
      39                 :  * ***** END LICENSE BLOCK ***** */
      40                 : 
      41                 : #include "nsIdleServiceGTK.h"
      42                 : #include "nsIServiceManager.h"
      43                 : #include "nsDebug.h"
      44                 : #include "prlink.h"
      45                 : #include "prlog.h"
      46                 : 
      47                 : 
      48                 : #ifdef PR_LOGGING
      49                 : static PRLogModuleInfo* sIdleLog = nsnull;
      50                 : #endif
      51                 : 
      52                 : typedef bool (*_XScreenSaverQueryExtension_fn)(Display* dpy, int* event_base,
      53                 :                                                  int* error_base);
      54                 : 
      55                 : typedef XScreenSaverInfo* (*_XScreenSaverAllocInfo_fn)(void);
      56                 : 
      57                 : typedef void (*_XScreenSaverQueryInfo_fn)(Display* dpy, Drawable drw,
      58                 :                                           XScreenSaverInfo *info);
      59                 : 
      60                 : static bool sInitialized = false;
      61                 : static _XScreenSaverQueryExtension_fn _XSSQueryExtension = nsnull;
      62                 : static _XScreenSaverAllocInfo_fn _XSSAllocInfo = nsnull;
      63                 : static _XScreenSaverQueryInfo_fn _XSSQueryInfo = nsnull;
      64                 : 
      65              26 : NS_IMPL_ISUPPORTS2(nsIdleServiceGTK, nsIdleService, nsIIdleService)
      66                 : 
      67               1 : static void Initialize()
      68                 : {
      69                 :     // This will leak - See comments in ~nsIdleServiceGTK().
      70               1 :     PRLibrary* xsslib = PR_LoadLibrary("libXss.so.1");
      71               1 :     if (!xsslib) // ouch.
      72                 :     {
      73                 : #ifdef PR_LOGGING
      74               0 :         PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to find libXss.so!\n"));
      75                 : #endif
      76               0 :         return;
      77                 :     }
      78                 : 
      79                 :     _XSSQueryExtension = (_XScreenSaverQueryExtension_fn)
      80               1 :         PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryExtension");
      81                 :     _XSSAllocInfo = (_XScreenSaverAllocInfo_fn)
      82               1 :         PR_FindFunctionSymbol(xsslib, "XScreenSaverAllocInfo");
      83                 :     _XSSQueryInfo = (_XScreenSaverQueryInfo_fn)
      84               1 :         PR_FindFunctionSymbol(xsslib, "XScreenSaverQueryInfo");
      85                 : #ifdef PR_LOGGING
      86               1 :     if (!_XSSQueryExtension)
      87               0 :         PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSQueryExtension!\n"));
      88               1 :     if (!_XSSAllocInfo)
      89               0 :         PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSAllocInfo!\n"));
      90               1 :     if (!_XSSQueryInfo)
      91               0 :         PR_LOG(sIdleLog, PR_LOG_WARNING, ("Failed to get XSSQueryInfo!\n"));
      92                 : #endif
      93                 : 
      94               1 :     sInitialized = true;
      95                 : }
      96                 : 
      97               1 : nsIdleServiceGTK::nsIdleServiceGTK()
      98               1 :     : mXssInfo(nsnull)
      99                 : {
     100                 : #ifdef PR_LOGGING
     101               1 :     if (!sIdleLog)
     102               1 :         sIdleLog = PR_NewLogModule("nsIIdleService");
     103                 : #endif
     104                 : 
     105               1 :     Initialize();
     106               1 : }
     107                 : 
     108               3 : nsIdleServiceGTK::~nsIdleServiceGTK()
     109                 : {
     110               1 :     if (mXssInfo)
     111               0 :         XFree(mXssInfo);
     112                 : 
     113                 : // It is not safe to unload libXScrnSaver until each display is closed because
     114                 : // the library registers callbacks through XESetCloseDisplay (Bug 397607).
     115                 : // (Also the library and its functions are scoped for the file not the object.)
     116                 : #if 0
     117                 :     if (xsslib) {
     118                 :         PR_UnloadLibrary(xsslib);
     119                 :         xsslib = nsnull;
     120                 :     }
     121                 : #endif
     122               4 : }
     123                 : 
     124                 : bool
     125               1 : nsIdleServiceGTK::PollIdleTime(PRUint32 *aIdleTime)
     126                 : {
     127               1 :     if (!sInitialized) {
     128                 :         // For some reason, we could not find xscreensaver.  This this might be
     129                 :         // because we are on a mobile platforms (e.g. Maemo/OSSO).  In this
     130                 :         // case, let the base class handle it
     131               0 :         return false;
     132                 :     }
     133                 : 
     134                 :     // Ask xscreensaver about idle time:
     135               1 :     *aIdleTime = 0;
     136                 : 
     137                 :     // We might not have a display (cf. in xpcshell)
     138               1 :     Display *dplay = GDK_DISPLAY();
     139               1 :     if (!dplay) {
     140                 : #ifdef PR_LOGGING
     141               1 :         PR_LOG(sIdleLog, PR_LOG_WARNING, ("No display found!\n"));
     142                 : #endif
     143               1 :         return false;
     144                 :     }
     145                 : 
     146               0 :     if (!_XSSQueryExtension || !_XSSAllocInfo || !_XSSQueryInfo) {
     147               0 :         return false;
     148                 :     }
     149                 : 
     150                 :     int event_base, error_base;
     151               0 :     if (_XSSQueryExtension(dplay, &event_base, &error_base))
     152                 :     {
     153               0 :         if (!mXssInfo)
     154               0 :             mXssInfo = _XSSAllocInfo();
     155               0 :         if (!mXssInfo)
     156               0 :             return false;
     157               0 :         _XSSQueryInfo(dplay, GDK_ROOT_WINDOW(), mXssInfo);
     158               0 :         *aIdleTime = mXssInfo->idle;
     159               0 :         return true;
     160                 :     }
     161                 :     // If we get here, we couldn't get to XScreenSaver:
     162                 : #ifdef PR_LOGGING
     163               0 :     PR_LOG(sIdleLog, PR_LOG_WARNING, ("XSSQueryExtension returned false!\n"));
     164                 : #endif
     165               0 :     return false;
     166                 : }
     167                 : 
     168                 : bool
     169               0 : nsIdleServiceGTK::UsePollMode()
     170                 : {
     171               0 :     return sInitialized;
     172                 : }
     173                 : 

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