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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* $Xorg: cmsProp.c,v 1.3 2000/08/17 19:45:10 cpqbld Exp $ */
/*
*
* Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc.
* All Rights Reserved
*
* This file is a component of an X Window System-specific implementation
* of Xcms based on the TekColor Color Management System. Permission is
* hereby granted to use, copy, modify, sell, and otherwise distribute this
* software and its documentation for any purpose and without fee, provided
* that this copyright, permission, and disclaimer notice is reproduced in
* all copies of this software and in supporting documentation. TekColor
* is a trademark of Tektronix, Inc.
*
* Tektronix makes no representation about the suitability of this software
* for any purpose. It is provided "as is" and with all faults.
*
* TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE,
* INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.
*
* NAME
* XcmsProp.c
*
* DESCRIPTION
* This utility routines for manipulating properties.
*
*/
#include <X11/Xatom.h>
#include "Xlibint.h"
#include "Xcmsint.h"
/************************************************************************
* *
* API PRIVATE ROUTINES *
* *
************************************************************************/
/*
* NAME
* _XcmsGetElement -- get an element value from the property passed
*
* SYNOPSIS
*/
unsigned long
_XcmsGetElement (format, pValue, pCount)
int format;
char **pValue;
unsigned long *pCount;
/*
* DESCRIPTION
* Get the next element from the property and return it.
* Also increment the pointer the amount needed.
*
* Returns
* unsigned long
*/
{
unsigned long value;
switch (format) {
case 32:
value = *((unsigned long *)(*pValue)) & 0xFFFFFFFF;
*pValue += sizeof(unsigned long);
*pCount -= 1;
break;
case 16:
value = *((unsigned short *)(*pValue));
*pValue += sizeof(unsigned short);
*pCount -= 1;
break;
case 8:
value = *((unsigned char *) (*pValue));
*pValue += 1;
*pCount -= 1;
break;
default:
value = 0;
break;
}
return(value);
}
/*
* NAME
* _XcmsGetProperty -- Determine the existance of a property
*
* SYNOPSIS
*/
int
_XcmsGetProperty (pDpy, w, property, pFormat, pNItems, pNBytes, pValue)
Display *pDpy;
Window w;
Atom property;
int *pFormat;
unsigned long *pNItems;
unsigned long *pNBytes;
char **pValue;
/*
* DESCRIPTION
*
* Returns
* 0 if property does not exist.
* 1 if property exists.
*/
{
char *prop_ret;
int format_ret;
long len = 6516;
unsigned long nitems_ret, after_ret;
Atom atom_ret;
while (XGetWindowProperty (pDpy, w, property, 0, len, False,
XA_INTEGER, &atom_ret, &format_ret,
&nitems_ret, &after_ret,
(unsigned char **)&prop_ret)) {
if (after_ret > 0) {
len += nitems_ret * (format_ret >> 3);
XFree (prop_ret);
} else {
break;
}
}
if (format_ret == 0 || nitems_ret == 0) {
/* the property does not exist or is of an unexpected type */
return(XcmsFailure);
}
*pFormat = format_ret;
*pNItems = nitems_ret;
*pNBytes = nitems_ret * (format_ret >> 3);
*pValue = prop_ret;
return(XcmsSuccess);
}
|
