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
214
215
216
217
|
/*
* tkAtom.c --
*
* This file manages a cache of X Atoms in order to avoid
* interactions with the X server. It's much like the Xmu
* routines, except it has a cleaner interface (caller
* doesn't have to provide permanent storage for atom names,
* for example).
*
* Copyright (c) 1990-1994 The Regents of the University of California.
* Copyright (c) 1994 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id$
*/
#include "tkPort.h"
#include "tkInt.h"
/*
* The following are a list of the predefined atom strings.
* They should match those found in xatom.h
*/
static char * atomNameArray[] = {
"PRIMARY", "SECONDARY", "ARC",
"ATOM", "BITMAP", "CARDINAL",
"COLORMAP", "CURSOR", "CUT_BUFFER0",
"CUT_BUFFER1", "CUT_BUFFER2", "CUT_BUFFER3",
"CUT_BUFFER4", "CUT_BUFFER5", "CUT_BUFFER6",
"CUT_BUFFER7", "DRAWABLE", "FONT",
"INTEGER", "PIXMAP", "POINT",
"RECTANGLE", "RESOURCE_MANAGER", "RGB_COLOR_MAP",
"RGB_BEST_MAP", "RGB_BLUE_MAP", "RGB_DEFAULT_MAP",
"RGB_GRAY_MAP", "RGB_GREEN_MAP", "RGB_RED_MAP",
"STRING", "VISUALID", "WINDOW",
"WM_COMMAND", "WM_HINTS", "WM_CLIENT_MACHINE",
"WM_ICON_NAME", "WM_ICON_SIZE", "WM_NAME",
"WM_NORMAL_HINTS", "WM_SIZE_HINTS", "WM_ZOOM_HINTS",
"MIN_SPACE", "NORM_SPACE", "MAX_SPACE",
"END_SPACE", "SUPERSCRIPT_X", "SUPERSCRIPT_Y",
"SUBSCRIPT_X", "SUBSCRIPT_Y", "UNDERLINE_POSITION",
"UNDERLINE_THICKNESS", "STRIKEOUT_ASCENT", "STRIKEOUT_DESCENT",
"ITALIC_ANGLE", "X_HEIGHT", "QUAD_WIDTH",
"WEIGHT", "POINT_SIZE", "RESOLUTION",
"COPYRIGHT", "NOTICE", "FONT_NAME",
"FAMILY_NAME", "FULL_NAME", "CAP_HEIGHT",
"WM_CLASS", "WM_TRANSIENT_FOR",
(char *) NULL
};
/*
* Forward references to procedures defined in this file:
*/
static void AtomInit _ANSI_ARGS_((TkDisplay *dispPtr));
/*
*--------------------------------------------------------------
*
* Tk_InternAtom --
*
* Given a string, produce the equivalent X atom. This
* procedure is equivalent to XInternAtom, except that it
* keeps a local cache of atoms. Once a name is known,
* the server need not be contacted again for that name.
*
* Results:
* The return value is the Atom corresponding to name.
*
* Side effects:
* A new entry may be added to the local atom cache.
*
*--------------------------------------------------------------
*/
Atom
Tk_InternAtom(tkwin, name)
Tk_Window tkwin; /* Window token; map name to atom
* for this window's display. */
CONST char *name; /* Name to turn into atom. */
{
register TkDisplay *dispPtr;
register Tcl_HashEntry *hPtr;
int new;
dispPtr = ((TkWindow *) tkwin)->dispPtr;
if (!dispPtr->atomInit) {
AtomInit(dispPtr);
}
hPtr = Tcl_CreateHashEntry(&dispPtr->nameTable, name, &new);
if (new) {
Tcl_HashEntry *hPtr2;
Atom atom;
atom = XInternAtom(dispPtr->display, name, False);
Tcl_SetHashValue(hPtr, atom);
hPtr2 = Tcl_CreateHashEntry(&dispPtr->atomTable, (char *) atom,
&new);
Tcl_SetHashValue(hPtr2, Tcl_GetHashKey(&dispPtr->nameTable, hPtr));
}
return (Atom) Tcl_GetHashValue(hPtr);
}
/*
*--------------------------------------------------------------
*
* Tk_GetAtomName --
*
* This procedure is equivalent to XGetAtomName except that
* it uses the local atom cache to avoid contacting the
* server.
*
* Results:
* The return value is a character string corresponding to
* the atom given by "atom". This string's storage space
* is static: it need not be freed by the caller, and should
* not be modified by the caller. If "atom" doesn't exist
* on tkwin's display, then the string "?bad atom?" is returned.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
CONST char *
Tk_GetAtomName(tkwin, atom)
Tk_Window tkwin; /* Window token; map atom to name
* relative to this window's
* display. */
Atom atom; /* Atom whose name is wanted. */
{
register TkDisplay *dispPtr;
register Tcl_HashEntry *hPtr;
dispPtr = ((TkWindow *) tkwin)->dispPtr;
if (!dispPtr->atomInit) {
AtomInit(dispPtr);
}
hPtr = Tcl_FindHashEntry(&dispPtr->atomTable, (char *) atom);
if (hPtr == NULL) {
char *name;
Tk_ErrorHandler handler;
int new, mustFree;
handler= Tk_CreateErrorHandler(dispPtr->display, BadAtom,
-1, -1, (Tk_ErrorProc *) NULL, (ClientData) NULL);
name = XGetAtomName(dispPtr->display, atom);
mustFree = 1;
if (name == NULL) {
name = "?bad atom?";
mustFree = 0;
}
Tk_DeleteErrorHandler(handler);
hPtr = Tcl_CreateHashEntry(&dispPtr->nameTable, (char *) name,
&new);
Tcl_SetHashValue(hPtr, atom);
if (mustFree) {
XFree(name);
}
name = Tcl_GetHashKey(&dispPtr->nameTable, hPtr);
hPtr = Tcl_CreateHashEntry(&dispPtr->atomTable, (char *) atom,
&new);
Tcl_SetHashValue(hPtr, name);
}
return Tcl_GetHashValue(hPtr);
}
/*
*--------------------------------------------------------------
*
* AtomInit --
*
* Initialize atom-related information for a display.
*
* Results:
* None.
*
* Side effects:
* Tables get initialized, etc. etc..
*
*--------------------------------------------------------------
*/
static void
AtomInit(dispPtr)
register TkDisplay *dispPtr; /* Display to initialize. */
{
Tcl_HashEntry *hPtr;
Atom atom;
dispPtr->atomInit = 1;
Tcl_InitHashTable(&dispPtr->nameTable, TCL_STRING_KEYS);
Tcl_InitHashTable(&dispPtr->atomTable, TCL_ONE_WORD_KEYS);
for (atom = 1; atom <= XA_LAST_PREDEFINED; atom++) {
hPtr = Tcl_FindHashEntry(&dispPtr->atomTable, (char *) atom);
if (hPtr == NULL) {
char *name;
int new;
name = atomNameArray[atom - 1];
hPtr = Tcl_CreateHashEntry(&dispPtr->nameTable, (char *) name,
&new);
Tcl_SetHashValue(hPtr, atom);
name = Tcl_GetHashKey(&dispPtr->nameTable, hPtr);
hPtr = Tcl_CreateHashEntry(&dispPtr->atomTable, (char *) atom,
&new);
Tcl_SetHashValue(hPtr, name);
}
}
}
|
