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/*
* Copyright (c) 2006 Smithsonian Astrophysical Observatory
*/
#include <xpap.h>
#ifdef HAVE_GTK
#include <gtk/gtk.h>
#include <gtk/gtkmain.h>
/*----------------------------------------------------------------------------
*
* Private Routines and Data
*
*----------------------------------------------------------------------------
*/
/* record struct for maintining gtk info in gtk select loop */
typedef struct xpagtkrec{
int fd;
void *client_data;
int id;
} *XPAGtk, XPAGtkRec;
/*----------------------------------------------------------------------------
*
* Routine: XPAGtkHandler
*
* Purpose: handle one request for an xpaset or xpaget
*
* Return: none
*
*----------------------------------------------------------------------------
*/
static gboolean XPAGtkHandler(GIOChannel *gio, GIOCondition condition,
gpointer data)
{
XPAGtk xptr = (XPAGtk)data;
if( (xptr == NULL) || (xptr->client_data == NULL) )
return TRUE;
XPAHandler((XPA)xptr->client_data, xptr->fd);
return TRUE;
}
/*----------------------------------------------------------------------------
*
* Routine: XPAGtkEnableOneInput
*
* Purpose: Enable 1 XPA entry from the Xt event loop
*
* Results: none
*
*----------------------------------------------------------------------------
*/
static void XPAGtkEnableOneInput (void *client_data)
{
XPAGtk xptr = (XPAGtk)client_data;
if( xptr && !xptr->id ){
GIOChannel* ioc = g_io_channel_unix_new(xptr->fd);
xptr->id = g_io_add_watch(ioc, (G_IO_IN | G_IO_HUP | G_IO_NVAL),
XPAGtkHandler, xptr);
}
}
/*----------------------------------------------------------------------------
*
* Routine: XPAGtkDisableOneInput
*
* Purpose: Disable 1 XPA entry from the Xt event loop
*
* Results: none
*
*----------------------------------------------------------------------------
*/
static void XPAGtkDisableOneInput (void *client_data)
{
XPAGtk xptr = (XPAGtk)client_data;
if(xptr && xptr->id){
g_source_remove(xptr->id);
xptr->id = 0;
}
}
/*----------------------------------------------------------------------------
*
* Routine: XPAGtkAddOneInput
*
* Purpose: Add 1 XPA entry to the gtk event loop
*
* Results: none
*
*----------------------------------------------------------------------------
*/
static void* XPAGtkAddOneInput (void *client_data, int fd)
{
XPAGtk xptr;
if( fd < 0 )
return(NULL);
xptr = (XPAGtk)calloc(1, sizeof(XPAGtkRec));
xptr->fd = fd;
xptr->client_data = client_data;
XPAGtkEnableOneInput(xptr);
return(xptr);
}
/*----------------------------------------------------------------------------
*
* Routine: XPAGtkDelOneInput
*
* Purpose: Delete 1 XPA entry from the gtk event loop (called by XPAFree)
*
* Results: none
*
*----------------------------------------------------------------------------
*/
static void XPAGtkDelOneInput (void *client_data)
{
XPAGtk xptr = (XPAGtk)client_data;
if( xptr == NULL)
return;
XPAGtkDisableOneInput(xptr);
free(xptr);
}
/*----------------------------------------------------------------------------
*
* Public Routines and Data
*
*----------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
*
* Routine: XPAGtkAddInput
*
* Purpose: Add XPA entries to the Xt event loop
*
* Results: number of xpa entried added
*
*----------------------------------------------------------------------------
*/
int XPAGtkAddInput (XPA xpa)
{
XPA cur;
int got=0;
/* if a specific xpa was specified, just add it */
if( xpa != NULL ){
/* remove old one */
if( xpa->seldel && xpa->selptr ){
(xpa->seldel)(xpa->selptr);
}
/* add new one */
xpa->seldel = XPAGtkDelOneInput;
xpa->seladd = XPAGtkAddOneInput;
xpa->selon = XPAGtkEnableOneInput;
xpa->seloff = XPAGtkDisableOneInput;
xpa->selptr = XPAGtkAddOneInput((void *)xpa, xpa->fd);
got = 1;
}
/* otherwise set up all xpa's */
else{
for(cur=(XPA)XPAListHead(); cur!=NULL; cur=cur->next){
/* remove old one */
if( cur->seldel && cur->selptr ){
(cur->seldel)(cur->selptr);
}
/* add new one */
cur->seldel = XPAGtkDelOneInput;
cur->seladd = XPAGtkAddOneInput;
cur->selon = XPAGtkEnableOneInput;
cur->seloff = XPAGtkDisableOneInput;
cur->selptr = XPAGtkAddOneInput((void *)cur, cur->fd);
got++;
}
}
return(got);
}
int xpa_gtk = 1;
#else
int xpa_gtk = 0;
#endif
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