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
|
/* Metacity UI Slave Messages */
/*
* Copyright (C) 2001 Havoc Pennington
*
* 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 2 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef META_UI_SLAVE_MESSAGES_H
#define META_UI_SLAVE_MESSAGES_H
#include <glib.h>
/* This thing badly violates the KISS principle. */
/* This header is shared between the WM and the UI slave */
/* Note that our IPC can be kind of lame; we trust both sides
* of the connection, and assume that they were compiled at the
* same time vs. the same libs on the same arch
*/
/* (and lo and behold, our IPC is kind of lame) */
/* We increment this when we change this header, so we can
* check for mismatched UI slave and WM
*/
#define META_MESSAGES_VERSION 1
/* We have an escape sequence, just in case some part of GTK
* decides to write to stdout, so that we have a good chance
* of surviving that. GTK probably won't print this string.
* This string has to stay the same always so we can ping
* old UI slaves.
*/
#define META_MESSAGE_ESCAPE "|~-metacity-~|"
/* len includes nul byte which is a required part of the escape */
#define META_MESSAGE_ESCAPE_LEN 15
/* This is totally useless of course. Playing around. */
#define META_MESSAGE_CHECKSUM(msg) ((msg)->header.length | (msg)->header.serial << 16)
#define META_MESSAGE_FOOTER(msg) ((MetaMessageFooter*) (((char*)(msg)) + ((msg)->header.length - sizeof (MetaMessageFooter))));
#define META_MESSAGE_LENGTH(real_type) \
(G_STRUCT_OFFSET (real_type, footer) + sizeof (MetaMessageFooter))
#define META_MESSAGE_MAX_SIZE (sizeof(MetaMessage));
#define META_MESSAGE_MAX_VERSION_LEN 15
#define META_MESSAGE_MAX_HOST_ALIAS_LEN 50
#define META_MESSAGE_MAX_TIP_LEN 128
typedef union _MetaMessage MetaMessage;
typedef struct _MetaMessageHeader MetaMessageHeader;
typedef struct _MetaMessageFooter MetaMessageFooter;
typedef struct _MetaMessageCheck MetaMessageCheck;
typedef struct _MetaMessageShowTip MetaMessageShowTip;
typedef struct _MetaMessageHideTip MetaMessageHideTip;
typedef struct _MetaMessageShowWindowMenu MetaMessageShowWindowMenu;
typedef struct _MetaMessageHideWindowMenu MetaMessageHideWindowMenu;
typedef enum
{
/* Keep NullCode and CheckCode unchanged, as with the escape sequence,
* so we can check old UI slaves.
*/
MetaMessageNullCode,
MetaMessageCheckCode,
MetaMessageShowTipCode,
MetaMessageHideTipCode,
MetaMessageShowWindowMenuCode,
MetaMessageHideWindowMenuCode
} MetaMessageCode;
struct _MetaMessageHeader
{
MetaMessageCode message_code;
int length;
int serial;
};
/* The footer thing was pretty much just a debug hack and could die. */
struct _MetaMessageFooter
{
int checksum;
};
/* just a ping to see if we have the right
* version of UI slave.
*/
struct _MetaMessageCheck
{
MetaMessageHeader header;
/* it's OK if the max sizes aren't large enough in all cases, these
* are just paranoia checks
*/
char metacity_version[META_MESSAGE_MAX_VERSION_LEN + 1];
char host_alias[META_MESSAGE_MAX_HOST_ALIAS_LEN + 1];
int messages_version;
MetaMessageFooter footer;
};
struct _MetaMessageShowTip
{
MetaMessageHeader header;
int root_x;
int root_y;
char markup[META_MESSAGE_MAX_TIP_LEN + 1];
MetaMessageFooter footer;
};
struct _MetaMessageHideTip
{
MetaMessageHeader header;
/* just hides the current tip */
MetaMessageFooter footer;
};
typedef enum
{
META_MESSAGE_MENU_DELETE = 1 << 0,
META_MESSAGE_MENU_MINIMIZE = 1 << 1,
META_MESSAGE_MENU_UNMAXIMIZE = 1 << 2,
META_MESSAGE_MENU_MAXIMIZE = 1 << 3,
META_MESSAGE_MENU_UNSHADE = 1 << 4,
META_MESSAGE_MENU_SHADE = 1 << 5,
META_MESSAGE_MENU_UNSTICK = 1 << 6,
META_MESSAGE_MENU_STICK = 1 << 7,
META_MESSAGE_MENU_WORKSPACES = 1 << 8
} MetaMessageWindowMenuOps;
struct _MetaMessageShowWindowMenu
{
MetaMessageHeader header;
MetaMessageWindowMenuOps ops;
MetaMessageWindowMenuOps insensitive;
gulong window;
int root_x;
int root_y;
guint32 timestamp;
int button;
MetaMessageFooter footer;
};
struct _MetaMessageHideWindowMenu
{
MetaMessageHeader header;
MetaMessageFooter footer;
};
union _MetaMessage
{
MetaMessageHeader header;
MetaMessageCheck check;
MetaMessageShowTip show_tip;
MetaMessageShowTip hide_tip;
MetaMessageShowWindowMenu show_menu;
MetaMessageHideWindowMenu hide_menu;
};
/* Slave-side message send/read code */
void meta_message_send_check (void);
#endif
|
