| 1 | /*
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| 2 | * idle_x11.cpp - detect desktop idle time
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| 3 | * Copyright (C) 2003 Justin Karneges
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| 4 | *
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| 5 | * This library is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU Lesser General Public
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| 7 | * License as published by the Free Software Foundation; either
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| 8 | * version 2.1 of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * This library is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 13 | * Lesser General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU Lesser General Public
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| 16 | * License along with this library; if not, write to the Free Software
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| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 18 | *
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| 19 | */
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| 20 |
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| 21 | #include"idle.h"
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| 22 |
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| 23 | #ifndef HAVE_XSS
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| 24 |
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| 25 | IdlePlatform::IdlePlatform() {}
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| 26 | IdlePlatform::~IdlePlatform() {}
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| 27 | bool IdlePlatform::init() { return false; }
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| 28 | int IdlePlatform::secondsIdle() { return 0; }
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| 29 |
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| 30 | #else
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| 31 |
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| 32 | #include<qapplication.h>
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| 33 |
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| 34 | #include<X11/Xlib.h>
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| 35 | #include<X11/Xutil.h>
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| 36 | #include<X11/extensions/scrnsaver.h>
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| 37 |
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| 38 | static XErrorHandler old_handler = 0;
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| 39 | extern "C" int xerrhandler(Display* dpy, XErrorEvent* err)
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| 40 | {
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| 41 | if(err->error_code == BadDrawable)
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| 42 | return 0;
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| 43 |
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| 44 | return (*old_handler)(dpy, err);
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| 45 | }
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| 46 |
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| 47 | class IdlePlatform::Private
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| 48 | {
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| 49 | public:
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| 50 | Private() {}
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| 51 |
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| 52 | XScreenSaverInfo *ss_info;
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| 53 | };
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| 54 |
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| 55 | IdlePlatform::IdlePlatform()
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| 56 | {
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| 57 | d = new Private;
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| 58 | d->ss_info = 0;
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| 59 | }
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| 60 |
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| 61 | IdlePlatform::~IdlePlatform()
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| 62 | {
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| 63 | if(d->ss_info)
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| 64 | XFree(d->ss_info);
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| 65 | if(old_handler) {
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| 66 | XSetErrorHandler(old_handler);
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| 67 | old_handler = 0;
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| 68 | }
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| 69 | delete d;
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| 70 | }
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| 71 |
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| 72 | bool IdlePlatform::init()
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| 73 | {
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| 74 | if(d->ss_info)
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| 75 | return true;
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| 76 |
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| 77 | old_handler = XSetErrorHandler(xerrhandler);
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| 78 |
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| 79 | int event_base, error_base;
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| 80 | if(XScreenSaverQueryExtension(QApplication::desktop()->screen()->x11Display(), &event_base, &error_base)) {
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| 81 | d->ss_info = XScreenSaverAllocInfo();
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| 82 | return true;
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| 83 | }
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| 84 | return false;
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| 85 | }
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| 86 |
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| 87 | int IdlePlatform::secondsIdle()
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| 88 | {
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| 89 | if(!d->ss_info)
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| 90 | return 0;
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| 91 | if(!XScreenSaverQueryInfo(QApplication::desktop()->screen()->x11Display(), qt_xrootwin(), d->ss_info))
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| 92 | return 0;
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| 93 | return d->ss_info->idle / 1000;
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| 94 | }
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| 95 |
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| 96 | #endif
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