1 /*
2 Copyright (C) 1992 Lucid, Inc.
3 Copyright (C) 2000-2023 Free Software Foundation, Inc.
4
5 This file is part of the Lucid Widget Library.
6
7 The Lucid Widget Library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 1, or (at your option)
10 any later version.
11
12 The Lucid Widget Library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
19
20
21 #ifndef LWLIB_INTERNAL_H
22 #define LWLIB_INTERNAL_H
23
24 #include "lwlib.h"
25
26 struct widget_xft_data;
27
28 typedef struct _widget_instance
29 {
30 Widget widget;
31 Widget parent;
32 Boolean pop_up_p;
33 #if defined USE_CAIRO || defined HAVE_XFT
34 struct widget_xft_data *xft_data;
35 #endif
36 struct _widget_info* info;
37 struct _widget_instance* next;
38 } widget_instance;
39
40 typedef struct _widget_info
41 {
42 char* type;
43 char* name;
44 LWLIB_ID id;
45 widget_value* val;
46 Boolean busy;
47 lw_callback pre_activate_cb;
48 lw_callback selection_cb;
49 lw_callback post_activate_cb;
50 lw_callback highlight_cb;
51 struct _widget_instance* instances;
52 struct _widget_info* next;
53 } widget_info;
54
55 typedef Widget (*widget_creation_function) (widget_instance *instance);
56
57 typedef struct _widget_creation_entry
58 {
59 char* type;
60 widget_creation_function function;
61 } widget_creation_entry;
62
63 /* update all other instances of a widget. Can be used in a callback when
64 a widget has been used by the user */
65 void
66 lw_internal_update_other_instances (Widget, XtPointer, XtPointer);
67
68 /* get the widget_value for a widget in a given instance */
69 widget_value*
70 lw_get_widget_value_for_widget (widget_instance *, Widget);
71
72 widget_info *lw_get_widget_info (LWLIB_ID);
73 widget_instance * lw_get_widget_instance (Widget);
74
75 #endif /* LWLIB_INTERNAL_H */