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#include <glib.h>
#include <X11/Xlib.h>
#include "x11-event-source.h"
/**
* Custom X11 Source implementation.
*/
typedef struct _X11EventSource
{
// Source
GSource source;
// Polling field
gpointer fd_x11;
Display *display;
} X11EventSource;
static gboolean x11_event_source_prepare ( GSource * base, gint * timeout )
{
X11EventSource *xs = (X11EventSource *) base;
*timeout = -1;
return /*XPending ( xs->display ) || */ g_source_query_unix_fd ( base, xs->fd_x11 );
}
static gboolean x11_event_source_check ( GSource * base )
{
X11EventSource *xs = (X11EventSource *) base;
if ( g_source_query_unix_fd ( base, xs->fd_x11 ) ) {
return TRUE;
}
return FALSE;
}
static gboolean x11_event_source_dispatch ( GSource * base, GSourceFunc callback, gpointer data )
{
X11EventSource *xs = (X11EventSource *) base;
if ( callback ) {
if ( g_source_query_unix_fd ( base, xs->fd_x11 ) ) {
callback ( data );
}
}
return G_SOURCE_CONTINUE;;
}
static GSourceFuncs x11_event_source_funcs = {
x11_event_source_prepare,
x11_event_source_check,
x11_event_source_dispatch,
NULL
};
GSource * x11_event_source_new ( Display *display )
{
int x11_fd = ConnectionNumber ( display );
X11EventSource *source = (X11EventSource *) g_source_new ( &x11_event_source_funcs, sizeof ( X11EventSource ) );
source->display = display;
source->fd_x11 = g_source_add_unix_fd ( (GSource *) source, x11_fd, G_IO_IN | G_IO_ERR );
// Attach it to main loop.
g_source_attach ( (GSource *) source, NULL );
return (GSource *) source;
}
void x11_event_source_set_callback ( GSource *source, GSourceFunc callback )
{
g_source_set_callback ( source, callback, NULL, NULL );
}
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