1 /*
2  * Copyright (c)2004 Cat's Eye Technologies.  All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *
8  *   Redistributions of source code must retain the above copyright
9  *   notice, this list of conditions and the following disclaimer.
10  *
11  *   Redistributions in binary form must reproduce the above copyright
12  *   notice, this list of conditions and the following disclaimer in
13  *   the documentation and/or other materials provided with the
14  *   distribution.
15  *
16  *   Neither the name of Cat's Eye Technologies nor the names of its
17  *   contributors may be used to endorse or promote products derived
18  *   from this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
31  * OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 /*
35  * curses_form.h
36  * $Id: curses_form.h,v 1.4 2005/02/08 05:54:44 cpressey Exp $
37  */
38 
39 #ifndef __CURSES_FORM_H
40 #define __CURSES_FORM_H
41 
42 #include <ncurses.h>
43 #include <panel.h>
44 
45 #include "curses_widget.h"
46 
47 struct curses_form {
48 	struct curses_widget *widget_head;	/* chain of widgets in form */
49 	struct curses_widget *widget_tail;
50 	struct curses_widget *widget_focus;	/* currently selected widget */
51 
52 	PANEL *pan;
53 	WINDOW *win;
54 
55 	unsigned int left;	/* column of left edge of form, 0-based */
56 	unsigned int top;	/* row of top edge of form, 0-based */
57 	unsigned int height;	/* height of form in rows, not incl border */
58 	unsigned int width;	/* width of form in columns, not incl border */
59 
60 	unsigned int x_offset;	/* first displayed col (horiz scrolling) */
61 	unsigned int y_offset;	/* first displayed row (vertical scrolling) */
62 	unsigned int int_width;	/* internal width (horizontal scrolling) */
63 	unsigned int int_height; /* internal height (vertical scrolling) */
64 
65 	unsigned int want_x;	/* For up/down row: remember where we */
66 	unsigned int want_y;	/* "want" to be, for natural navigation */
67 
68 	char *title;		/* text displayed in title bar of form */
69 
70 	void *userdata;		/* misc pointer */
71 	int cleanup;		/* are we responsible for freeing userdata? */
72 
73 	char *help_text;	/* if non-NULL, text shown in help window */
74 };
75 
76 struct curses_form	*curses_form_new(const char *);
77 void			 curses_form_free(struct curses_form *);
78 struct curses_widget	*curses_form_widget_add(struct curses_form *,
79 						unsigned int, unsigned int,
80 						unsigned int, widget_t,
81 						const char *,
82 						unsigned int, unsigned int);
83 struct curses_widget	*curses_form_widget_insert_after(struct curses_widget *,
84 						unsigned int, unsigned int,
85 						unsigned int, widget_t,
86 						const char *,
87 						unsigned int, unsigned int);
88 void			 curses_form_widget_remove(struct curses_widget *);
89 struct curses_widget	*curses_form_widget_at(struct curses_form *,
90 						unsigned int, unsigned int);
91 int			 curses_form_widget_first_row(struct curses_form *);
92 int			 curses_form_widget_last_row(struct curses_form *);
93 struct curses_widget	*curses_form_widget_first_on_row(struct curses_form *,
94 						unsigned int);
95 struct curses_widget	*curses_form_widget_closest_on_row(struct curses_form *,
96 						unsigned int, unsigned int);
97 int			curses_form_widget_count_above(struct curses_form *,
98 							struct curses_widget *);
99 int			 curses_form_widget_count_below(struct curses_form *,
100 							struct curses_widget *);
101 int			 curses_form_descriptive_labels_add(struct curses_form *,
102 				const char *, unsigned int, unsigned int, unsigned int);
103 void			 curses_form_finalize(struct curses_form *);
104 void			 curses_form_draw(struct curses_form *);
105 void			 curses_form_refresh(struct curses_form *);
106 void			 curses_form_focus_skip_forward(struct curses_form *);
107 void			 curses_form_focus_skip_backward(struct curses_form *);
108 void			 curses_form_advance(struct curses_form *);
109 void			 curses_form_retreat(struct curses_form *);
110 void			 curses_form_advance_row(struct curses_form *);
111 void			 curses_form_retreat_row(struct curses_form *);
112 void			 curses_form_scroll_to(struct curses_form *, unsigned int, unsigned int);
113 void			 curses_form_scroll_delta(struct curses_form *, int, int);
114 int			 curses_form_widget_is_visible(struct curses_widget *);
115 void			 curses_form_widget_ensure_visible(struct curses_widget *);
116 struct curses_widget	*curses_form_frob(struct curses_form *);
117 
118 int			 cb_click_close_form(struct curses_widget *);
119 
120 #endif /* !__CURSES_FORM_H */
121