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
|
/* Copyright (c) Mark J. Kilgard, 1994, 1997. */
/* This program is freely distributable without licensing fees
and is provided without guarantee or warrantee expressed or
implied. This program is -not- in the public domain. */
/* glut_menu2.c implements the little used GLUT menu calls in
a distinct file from glut_menu.c for slim static linking. */
/* The Win32 GLUT file win32_menu.c completely re-implements all
the menuing functionality implemented. This file is used only by
the X Window System version of GLUT. */
#ifdef __VMS
#include <GL/vms_x_fix.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <assert.h>
#include <X11/Xlib.h>
#include "glutint.h"
#include "layerutil.h"
/* CENTRY */
/* DEPRICATED, use glutMenuStatusFunc instead. */
void APIENTRY
glutMenuStateFunc(GLUTmenuStateCB menuStateFunc)
{
__glutMenuStatusFunc = (GLUTmenuStatusCB) menuStateFunc;
}
void APIENTRY
glutMenuStatusFunc(GLUTmenuStatusCB menuStatusFunc)
{
__glutMenuStatusFunc = menuStatusFunc;
}
void APIENTRY
glutDestroyMenu(int menunum)
{
GLUTmenu *menu = __glutGetMenuByNum(menunum);
GLUTmenuItem *item, *next;
if (__glutMappedMenu)
__glutMenuModificationError();
assert(menu->id == menunum - 1);
XDestroySubwindows(__glutDisplay, menu->win);
XDestroyWindow(__glutDisplay, menu->win);
__glutMenuList[menunum - 1] = NULL;
/* free all menu entries */
item = menu->list;
while (item) {
assert(item->menu == menu);
next = item->next;
free(item->label);
free(item);
item = next;
}
if (__glutCurrentMenu == menu) {
__glutCurrentMenu = NULL;
}
free(menu);
}
void APIENTRY
glutChangeToMenuEntry(int num, const char *label, int value)
{
GLUTmenuItem *item;
int i;
if (__glutMappedMenu)
__glutMenuModificationError();
i = __glutCurrentMenu->num;
item = __glutCurrentMenu->list;
while (item) {
if (i == num) {
if (item->isTrigger) {
/* If changing a submenu trigger to a menu entry, we
need to account for submenus. */
item->menu->submenus--;
}
free(item->label);
__glutSetMenuItem(item, label, value, False);
return;
}
i--;
item = item->next;
}
__glutWarning("Current menu has no %d item.", num);
}
void APIENTRY
glutChangeToSubMenu(int num, const char *label, int menu)
{
GLUTmenuItem *item;
int i;
if (__glutMappedMenu)
__glutMenuModificationError();
i = __glutCurrentMenu->num;
item = __glutCurrentMenu->list;
while (item) {
if (i == num) {
if (!item->isTrigger) {
/* If changing a menu entry to as submenu trigger, we
need to account for submenus. */
item->menu->submenus++;
}
free(item->label);
__glutSetMenuItem(item, label, /* base 0 */ menu - 1, True);
return;
}
i--;
item = item->next;
}
__glutWarning("Current menu has no %d item.", num);
}
void APIENTRY
glutRemoveMenuItem(int num)
{
GLUTmenuItem *item, **prev, *remaining;
int pixwidth, i;
if (__glutMappedMenu)
__glutMenuModificationError();
i = __glutCurrentMenu->num;
prev = &__glutCurrentMenu->list;
item = __glutCurrentMenu->list;
/* If menu item is removed, the menu's pixwidth may need to
be recomputed. */
pixwidth = 1;
while (item) {
if (i == num) {
/* If this menu item's pixwidth is as wide as the menu's
pixwidth, removing this menu item will necessitate
shrinking the menu's pixwidth. */
if (item->pixwidth >= __glutCurrentMenu->pixwidth) {
/* Continue recalculating menu pixwidth, first skipping
the removed item. */
remaining = item->next;
while (remaining) {
if (remaining->pixwidth > pixwidth) {
pixwidth = remaining->pixwidth;
}
remaining = remaining->next;
}
__glutCurrentMenu->pixwidth = pixwidth;
}
__glutCurrentMenu->num--;
__glutCurrentMenu->managed = False;
/* Patch up menu's item list. */
*prev = item->next;
free(item->label);
free(item);
return;
}
if (item->pixwidth > pixwidth) {
pixwidth = item->pixwidth;
}
i--;
prev = &item->next;
item = item->next;
}
__glutWarning("Current menu has no %d item.", num);
}
void APIENTRY
glutDetachMenu(int button)
{
if (__glutMappedMenu)
__glutMenuModificationError();
if (__glutCurrentWindow->menu[button] > 0) {
__glutCurrentWindow->buttonUses--;
__glutChangeWindowEventMask(ButtonPressMask | ButtonReleaseMask,
__glutCurrentWindow->buttonUses > 0);
__glutCurrentWindow->menu[button] = 0;
}
}
/* ENDCENTRY */
|
