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/************************************************************************/
/* */
/* Simple io streams using X11 windows properties. */
/* */
/************************************************************************/
# include "appFrameConfig.h"
# include <stdlib.h>
# include <sioXprop.h>
# include <appDebugon.h>
# ifdef USE_MOTIF
# include <X11/Xlib.h>
# include <X11/Xatom.h>
static Atom XA_XV_CLIPBOARD= None;
/************************************************************************/
/* */
/* Refuse to seek on copy/paste streams. */
/* */
/************************************************************************/
static int sioXpropSeek( void * voidp,
long pos )
{ LDEB(pos); return -1; }
/************************************************************************/
/* */
/* Input.. Paste. */
/* */
/************************************************************************/
typedef struct XpropPasteStream
{
Display * xpsDisplay;
APP_WINDOW xpsWindow;
APP_ATOM xpsProperty;
long xpsOffset;
long xpsExhausted;
int xpsDeleteOnClose;
} XpropPasteStream;
static int sioXpropPasteClose( void * voidxps )
{
XpropPasteStream * xps= (XpropPasteStream *)voidxps;
if ( xps->xpsDeleteOnClose )
{
XDeleteProperty( xps->xpsDisplay, xps->xpsWindow, xps->xpsProperty );
}
free( voidxps );
return 0;
}
static int sioInXpropReadBytes( void * voidxps,
unsigned char * buffer,
int count )
{
XpropPasteStream * xps= (XpropPasteStream *)voidxps;
Atom typeFound;
int formatFound;
unsigned long itemsReturned;
unsigned long itemsLeft;
unsigned char * dataReturned;
int ret;
if ( xps->xpsExhausted )
{ return -1; }
ret= XGetWindowProperty( xps->xpsDisplay, xps->xpsWindow, xps->xpsProperty,
xps->xpsOffset/4, count/4, False, AnyPropertyType,
&typeFound, &formatFound,
&itemsReturned, &itemsLeft, &dataReturned );
if ( ret != Success )
{ LLDEB(ret,Success); return -1; }
if ( itemsReturned == 0 )
{ LDEB(itemsReturned); return -1; }
if ( formatFound != 8 )
{ LLDEB(typeFound,formatFound); return -1; }
memcpy( buffer, dataReturned, itemsReturned );
XFree( dataReturned );
xps->xpsOffset += itemsReturned;
if ( itemsLeft == 0 )
{ xps->xpsExhausted= 1; }
return itemsReturned;
}
SimpleInputStream * sioInOpenPaste( APP_WIDGET w,
APP_EVENT * event )
{
XSelectionEvent * selEvent= &(event->xselection);
SimpleInputStream * sis;
XpropPasteStream * xps;
xps= (XpropPasteStream *)malloc( sizeof( XpropPasteStream ) );
if ( ! xps )
{ XDEB(xps); return (SimpleInputStream *)0; }
xps->xpsDisplay= XtDisplay( w );
xps->xpsWindow= XtWindow( w );
xps->xpsProperty= selEvent->property;
xps->xpsOffset= 0L;
xps->xpsExhausted= 0;
xps->xpsDeleteOnClose= 1;
sis= sioInOpen( (void *)xps,
sioInXpropReadBytes, sioXpropSeek, sioXpropPasteClose );
if ( ! sis )
{ XDEB(sis); free( xps ); return (SimpleInputStream *)0; }
return sis;
}
SimpleInputStream * sioInOpenXvPaste( APP_WIDGET w )
{
Display * display= XtDisplay( w );
int screen= DefaultScreen( display );
SimpleInputStream * sis;
XpropPasteStream * xps;
if ( XA_XV_CLIPBOARD == None )
{
XA_XV_CLIPBOARD= XInternAtom( display, "XV_CLIPBOARD", False );
if ( XA_XV_CLIPBOARD == None )
{ XDEB(XA_XV_CLIPBOARD); return (SimpleInputStream *)0; }
}
xps= (XpropPasteStream *)malloc( sizeof( XpropPasteStream ) );
if ( ! xps )
{ XDEB(xps); return (SimpleInputStream *)0; }
xps->xpsDisplay= display;
xps->xpsWindow= XRootWindow( display, screen );
xps->xpsProperty= XA_XV_CLIPBOARD;
xps->xpsOffset= 0L;
xps->xpsExhausted= 0;
xps->xpsDeleteOnClose= 0;
sis= sioInOpen( (void *)xps,
sioInXpropReadBytes, sioXpropSeek, sioXpropPasteClose );
if ( ! sis )
{ XDEB(sis); free( xps ); return (SimpleInputStream *)0; }
return sis;
}
/************************************************************************/
/* */
/* Output.. Copy. */
/* */
/************************************************************************/
typedef struct XpropCopyStream
{
Display * xcsDisplay;
APP_WINDOW xcsRequestor;
Atom xcsProperty;
Atom xcsTarget;
int xcsPropMode;
} XpropCopyStream;
static int sioXpropCopyClose( void * voidxcs )
{
free( voidxcs );
return 0;
}
static int sioOutCopyWriteBytes( void * voidxcs,
const unsigned char * buffer,
int count )
{
XpropCopyStream * xcs= (XpropCopyStream *)voidxcs;
XChangeProperty( xcs->xcsDisplay, xcs->xcsRequestor,
xcs->xcsProperty, xcs->xcsTarget,
8, xcs->xcsPropMode, buffer, count );
xcs->xcsPropMode= PropModeAppend;
return count;
}
SimpleOutputStream * sioOutOpenCopy( APP_WIDGET w,
APP_EVENT * event )
{
XSelectionEvent * selEvent= &(event->xselection);
SimpleOutputStream * sos;
XpropCopyStream * xcs;
xcs= (XpropCopyStream *)malloc( sizeof( XpropCopyStream ) );
if ( ! xcs )
{ XDEB(xcs); return (SimpleOutputStream *)0; }
xcs->xcsDisplay= XtDisplay( w );
xcs->xcsRequestor= selEvent->requestor;
xcs->xcsProperty= selEvent->property;
xcs->xcsTarget= selEvent->target;
xcs->xcsPropMode= PropModeReplace;
sos= sioOutOpen( (void *)xcs, sioOutCopyWriteBytes,
sioXpropSeek, sioXpropCopyClose );
if ( ! sos )
{ XDEB(sos); free( xcs ); return (SimpleOutputStream *)0; }
return sos;
}
SimpleOutputStream * sioOutOpenXvCopy( APP_WIDGET w )
{
Display * display= XtDisplay( w );
int screen= DefaultScreen( display );
SimpleOutputStream * sos;
XpropCopyStream * xcs;
if ( ! XA_XV_CLIPBOARD )
{
XA_XV_CLIPBOARD= XInternAtom( display, "XV_CLIPBOARD", False );
if ( ! XA_XV_CLIPBOARD )
{ XDEB(XA_XV_CLIPBOARD); return (SimpleOutputStream *)0; }
}
xcs= (XpropCopyStream *)malloc( sizeof( XpropCopyStream ) );
if ( ! xcs )
{ XDEB(xcs); return (SimpleOutputStream *)0; }
xcs->xcsDisplay= XtDisplay( w );
xcs->xcsRequestor= XRootWindow( display, screen );
xcs->xcsProperty= XA_XV_CLIPBOARD;
xcs->xcsTarget= XA_STRING;
xcs->xcsPropMode= PropModeReplace;
sos= sioOutOpen( (void *)xcs, sioOutCopyWriteBytes,
sioXpropSeek, sioXpropCopyClose );
if ( ! sos )
{ XDEB(sos); free( xcs ); return (SimpleOutputStream *)0; }
return sos;
}
# endif
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