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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/**
* Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE /* for strcasestr */
#include <stdlib.h>
#include <stdio.h>
#include <alloca.h>
#include <string.h>
#include <xcb/xcb.h>
/**
* Connection to the X server
*/
static xcb_connection_t* connection;
/**
* Used to store errors in
*/
static xcb_generic_error_t* error;
/**
* Main entry point of the program
*
* @param argc Length of `argv`
* @param argv Command line arguments
* @return Zero on success
*/
int main(int argc, char** argv)
{
const xcb_setup_t* setup;
xcb_screen_iterator_t iter;
int screen_count;
xcb_screen_t* screens;
int screen_i;
(void) argc;
(void) argv;
/* Get X connection */
connection = xcb_connect(NULL, NULL);
/* Get screen information */
setup = xcb_get_setup(connection);
iter = xcb_setup_roots_iterator(setup);
screen_count = iter.rem;
screens = iter.data;
for (screen_i = 0; screen_i < screen_count; screen_i++)
{
xcb_screen_t* screen = screens + screen_i;
xcb_list_properties_cookie_t list_cookie;
xcb_list_properties_reply_t* list_reply;
xcb_atom_t* atoms;
xcb_atom_t* atoms_end;
/* Get root window properties */
list_cookie = xcb_list_properties(connection, screen->root);
list_reply = xcb_list_properties_reply(connection, list_cookie, &error);
if (error)
{
fprintf(stderr, "Screen root window property list query returned %i\n", error->error_code);
xcb_disconnect(connection);
return 1;
}
atoms = xcb_list_properties_atoms(list_reply);
atoms_end = atoms + xcb_list_properties_atoms_length(list_reply);
for (; atoms != atoms_end; atoms++)
{
xcb_get_atom_name_cookie_t name_cookie;
xcb_get_atom_name_reply_t* name_reply;
char* name;
char* name_;
int len;
xcb_get_property_cookie_t prop_cookie;
xcb_get_property_reply_t* prop_reply;
int monitor;
/* Get root window property name */
name_cookie = xcb_get_atom_name(connection, *atoms);
name_reply = xcb_get_atom_name_reply(connection, name_cookie, &error);
if (error)
{
fprintf(stderr, "Screen root window property name query returned %i\n", error->error_code);
free(list_reply);
xcb_disconnect(connection);
return 1;
}
name_ = xcb_get_atom_name_name(name_reply);
len = xcb_get_atom_name_name_length(name_reply);
name = alloca((len + 1) * sizeof(char));
memcpy(name, name_, len * sizeof(char));
*(name + len) = 0;
free(name_reply);
/* Check property name pattern */
if (!strcmp(name, "_icc_profile"))
monitor = 0;
else if (strcasestr(name, "_icc_profile_") == name)
{
name += strlen("_icc_profile_");
monitor = 0;
if (*name)
continue;
while (*name)
{
char c = *name;
if (('0' <= c) && (c <= '9'))
monitor = monitor * 10 - (c & 15);
else
goto monitor_bad;
}
monitor = -monitor;
goto monitor_ok;
monitor_bad:
continue;
}
else
continue;
/* Get root window property value */
monitor_ok:
prop_cookie = xcb_get_property(connection, 0, screen->root, *atoms, XCB_GET_PROPERTY_TYPE_ANY, 0, 0);
prop_reply = xcb_get_property_reply(connection, prop_cookie, &error);
if (error)
{
fprintf(stderr, "Screen root window property value query returned %i\n", error->error_code);
free(prop_reply);
free(list_reply);
xcb_disconnect(connection);
return 1;
}
len = prop_reply->bytes_after;
free(prop_reply);
prop_cookie = xcb_get_property(connection, 0, screen->root, *atoms, XCB_GET_PROPERTY_TYPE_ANY, 0, len);
prop_reply = xcb_get_property_reply(connection, prop_cookie, &error);
if (error)
{
fprintf(stderr, "Screen root window property value query returned %i\n", error->error_code);
free(prop_reply);
free(list_reply);
xcb_disconnect(connection);
return 1;
}
{
char* value = alloca((2 * len + 1) * sizeof(char));
char* value_ = xcb_get_property_value(prop_reply);
for (i = 0; i < len; i++)
{
*(value + i * 2 + 0) = "0123456789abcdef"[(*(value_ + i) >> 4) & 15];
*(value + i * 2 + 1) = "0123456789abcdef"[(*(value_ + i) >> 0) & 15];
}
*(value + 2 * len) = 0;
printf("%i: %i: %s\n", screen_i, monitor, value);
}
free(prop_reply);
}
free(list_reply);
}
fflush(stdout);
/* Free resources **/
xcb_disconnect(connection);
return 0;
}
|
