kde-workspace/kcontrol/input/kapplymousetheme.cpp

/*
 * main.cpp
 *
 * Copyright (c) 1999 Matthias Hoelzer-Kluepfel <hoelzer@kde.org>
 * Copyright (c) 2005 Lubos Lunak <l.lunak@kde.org>
 *
 * Requires the Qt widget libraries, available at no cost at
 * http://www.troll.no/
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include <config-X11.h>

#include <stdlib.h>
#include <ctype.h>

#ifdef HAVE_XCURSOR
#  include <X11/Xlib.h>
#  include <X11/Xcursor/Xcursor.h>
#endif

static bool isEmpty( const char* str )
{
    if( str == NULL )
        return true;
    while( isspace( *str ))
        ++str;
    return *str == '\0';
}

int main( int argc, char* argv[] )
{
    if( argc != 3 )
        return 1;
    int ret = 0;
#ifdef HAVE_XCURSOR
    Display* dpy = XOpenDisplay( NULL );
    if( dpy == NULL )
        return 2;

    const char* theme = argv[ 1 ];
    const char* size = argv[ 2 ];

    // Note: If you update this code, update kapplymousetheme as well.

    // use a default value for theme only if it's not configured at all, not even in X resources
    if( isEmpty( theme )
        && isEmpty( XGetDefault( dpy, "Xcursor", "theme" ))
        && isEmpty( XcursorGetTheme( dpy)))
    {
        theme = "default";
        ret = 10; // means to switch to default
    }

     // Apply the KDE cursor theme to ourselves
    if( !isEmpty( theme ))
        XcursorSetTheme(dpy, theme );

    if (!isEmpty( size ))
        XcursorSetDefaultSize(dpy, atoi( size ));

    // Load the default cursor from the theme and apply it to the root window.
    Cursor handle = XcursorLibraryLoadCursor(dpy, "left_ptr");
    XDefineCursor(dpy, DefaultRootWindow( dpy ), handle);
    XFreeCursor(dpy, handle); // Don't leak the cursor

    XCloseDisplay( dpy );
#else
    Q_UNUSED(argv);
#endif
    return ret;
}