1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/* The getdata routine handles the aquisition of data from the user program. */
/* It is called upon receipt of a SelectionNotify event. */
/* Return Value: */
/* 1 If everything went fine */
/* 0 If something happened and the program should terminate. *
/* Sam Southard, Jr. */
/* Created: 15-Dec-1990 from mainloop.c */
/* 18-Dec-1990 SNS/CIT Cursor information now in wininfo structure. */
/* 2-Apr-1991 SNS/CIT Image capabilities commented out for inclusion in */
/* xvideo program. */
/* 11-Apr-1991 SNS/CIT Modified to update the display if necessary. */
/* 10-May-1991 SNS/CIT Modified to be shared between Xvideo and pgdisp */
/* 15-Aug-1991 SNS/CIT No longer includes vista hooks */
/* 20-Aug-1991 SNS/CIT Now calculates buflen based on XMaxRequestSize */
/* instead of being hard coded. */
/* 5-Sep-1991 SNS/CIT Modified to lint cleanly */
/* 8-Oct-1991 SNS/CIT Globals moved to globals.h */
/* 19-Oct-1991 SNS/CIT No longer mistakenly resets buflen. */
/* 14-Apr-1992 SNS/CIT Now compiles under VMS */
/* 27-Sep-1992 SNS/CIT return buffer now stored in network byte order */
/* The system include files */
#include <stdio.h>
#include <sys/types.h>
#include <netinet/in.h>
/* The X include files */
#include <X11/Xlib.h>
#include <X11/Xatom.h>
/* The program include files */
#include "commands.h"
#include "figdisp.h"
#include "globals.h"
#include "messages.h"
int getdata(event,rbuf,rbuflen,srcwin,selset)
XSelectionEvent event; /* the event we're handling */
short *rbuf; /* a return buffer, if needed */
int *rbuflen; /* the length of the return buffer. If it's 0, no return */
/* message should be sent. */
Window srcwin; /* the source of our data */
int *selset; /* whether or not the selection is owned by a user program */
{
short *buffer; /* buffer for the data received */
/* the max buffer length (in 16-bit words) */
static long buflen= -1;
unsigned long nitems; /* the actual number of items we got */
unsigned long bytesleft; /* bytes left in the selection */
Atom acttype; /* the actual data type */
int actform; /* the actual data format */
void returnbuf(); /* return data to the user process */
void clearcurs(); /* clear the list of cursor presses */
int proccom ();
if (buflen == -1) buflen= (XMaxRequestSize(display)-10)<<1;
if (XGetWindowProperty(display, srcwin, event.property, 0L, buflen,
True, AnyPropertyType, &acttype, &actform, &nitems, &bytesleft,
(unsigned char **)&buffer) != Success)
{
(void)fprintf(stderr,MSG_BADGETPROP);
return(0);
}
if (acttype == XA_STRING)
{
if (proccom(buffer,(int)nitems>>1,rbuf,rbuflen)) return(0);
} else if (acttype == incrtype) {
if (!nitems)
{ /* all done, get the selection back */
XSetSelectionOwner(display,selatom,lg.win,CurrentTime);
if (XGetSelectionOwner(display,selatom) != lg.win)
{
(void)fprintf(stderr, MSG_BADSELOWN);
return(0);
}
*selset=0;
clearcurs();
XUngrabKeyboard(display,CurrentTime);
#ifndef PGDISP
(void)writeimage((short **)NULL,(int *)NULL);
#endif
(void)proccom(buffer,0,rbuf,rbuflen);
if (*rbuflen) (void)fprintf(stderr,MSG_REPLYNOTSENT);
*rbuflen=0;
XFlush(display);
}
} else (void)fprintf(stderr,MSG_BADDATATYPE);
XFree((char *)buffer);
/* if no info to send, just go to next event */
if (!*rbuflen) return(1);
/* send requested information back to client */
if (ntohs(*rbuf) != LG_CURS && ntohs(*rbuf) != BM_GET_CURS)
{ /* cursor information isn't here yet */
returnbuf(rbuf,*rbuflen,srcwin);
*rbuflen=0;
}
return(1);
}
|
