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
105
106
107
108
|
############################################################################
#
# File: drawlab.icn
#
# Subject: Procedure to draw figures
#
# Author: Ralph E. Griswold
#
# Date: August 3, 2000
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This procedure is a general-purpose interface used by various programs
# that draw figures of various kinds.
#
# Although it's listed as requiring graphics, that's really not necessary
# for interfaces to other devices or just producing coordinates.
#
############################################################################
#
# Requires: Version 9 graphics
#
############################################################################
#
# Links: ifg, gtrace, gdisable, wopen, xgtrace
#
############################################################################
link ifg
link gtrace
link gdisable
link wopen
link xgtrace
global size # can be set by caller to control the window size
procedure drawlab(p, callt, label)
local line, ws, calls, arg, trace, dlist, name
/size := 600
ws := ' \t'
calls := callt()
dlist := []
every put(dlist, key(calls))
dlist := sort(dlist)
# If a window can be opened, set things up for drawing. If not, just
# list coordinates. (This is useful for testing when an X server
# is not available.)
if ifg() then {
WOpen("label=" || label, "width=" || size, "height=" || size) |
stop("*** cannot open window")
trace := line_trace
}
else {
gdisable()
trace := list_coords
}
while line := read() do {
EraseArea() # clear window if there is one
args := []
line ? {
tab(many(ws))
if ="=" then {
name := tab(0)
GotoRC(2, 2)
writes(&window, name)
trace(\calls[name]) | {
write(&errout, "*** erroneous specification")
next
}
}
else if ="all" then {
every name := !dlist do {
GotoRC(2, 2)
writes(&window, name)
trace(calls[name])
Event()
EraseArea()
}
}
else { # not tested yet
tab(many(ws))
while arg := tab(upto(',')) do {
if *arg = 0 then put(args, &null) else {
put(args, numeric(arg)) | {
write(&errout, "*** erroneous specification")
next
}
}
move(1) | break
tab(many(ws))
}
trace(call(p, args))
}
}
}
end
|
