source: viewwin.c @ 719173c4

release-1.6release-1.7release-1.8release-1.9
Last change on this file since 719173c4 was f449096, checked in by David Benjamin <davidben@mit.edu>, 11 years ago
Drop calls to update_panels outside main loop One call is sufficient. Also, it doesn't do anything without a doupdate anyway.
  • Property mode set to 100644
File size: 3.8 KB
Line 
1#include <string.h>
2#include "owl.h"
3
4#define BOTTOM_OFFSET 1
5
6/* initialize the viewwin e.  'win' is an already initialzed curses
7 * window that will be used by viewwin
8 */
9void owl_viewwin_init_text(owl_viewwin *v, WINDOW *win, int winlines, int wincols, const char *text)
10{
11  owl_fmtext_init_null(&(v->fmtext));
12  if (text) {
13    owl_fmtext_append_normal(&(v->fmtext), text);
14    if (text[0] != '\0' && text[strlen(text) - 1] != '\n') {
15      owl_fmtext_append_normal(&(v->fmtext), "\n");
16    }
17    v->textlines=owl_fmtext_num_lines(&(v->fmtext));
18  }
19  v->topline=0;
20  v->rightshift=0;
21  v->winlines=winlines;
22  v->wincols=wincols;
23  v->curswin=win;
24  v->onclose_hook = NULL;
25}
26
27void owl_viewwin_append_text(owl_viewwin *v, const char *text) {
28    owl_fmtext_append_normal(&(v->fmtext), text);
29    v->textlines=owl_fmtext_num_lines(&(v->fmtext)); 
30}
31
32/* initialize the viewwin e.  'win' is an already initialzed curses
33 * window that will be used by viewwin
34 */
35void owl_viewwin_init_fmtext(owl_viewwin *v, WINDOW *win, int winlines, int wincols, const owl_fmtext *fmtext)
36{
37  char *text;
38
39  owl_fmtext_copy(&(v->fmtext), fmtext);
40  text = owl_fmtext_print_plain(fmtext);
41  if (text[0] != '\0' && text[strlen(text) - 1] != '\n') {
42      owl_fmtext_append_normal(&(v->fmtext), "\n");
43  }
44  owl_free(text);
45  v->textlines=owl_fmtext_num_lines(&(v->fmtext));
46  v->topline=0;
47  v->rightshift=0;
48  v->winlines=winlines;
49  v->wincols=wincols;
50  v->curswin=win;
51}
52
53void owl_viewwin_set_curswin(owl_viewwin *v, WINDOW *w, int winlines, int wincols)
54{
55  v->curswin=w;
56  v->winlines=winlines;
57  v->wincols=wincols;
58}
59
60void owl_viewwin_set_onclose_hook(owl_viewwin *v, void (*onclose_hook) (owl_viewwin *vwin, void *data), void *onclose_hook_data) {
61  v->onclose_hook = onclose_hook;
62  v->onclose_hook_data = onclose_hook_data;
63}
64
65/* regenerate text on the curses window. */
66void owl_viewwin_redisplay(owl_viewwin *v)
67{
68  owl_fmtext fm1, fm2;
69 
70  werase(v->curswin);
71  wmove(v->curswin, 0, 0);
72
73  owl_fmtext_init_null(&fm1);
74  owl_fmtext_init_null(&fm2);
75 
76  owl_fmtext_truncate_lines(&(v->fmtext), v->topline, v->winlines-BOTTOM_OFFSET, &fm1);
77  owl_fmtext_truncate_cols(&fm1, v->rightshift, v->wincols-1+v->rightshift, &fm2);
78
79  owl_fmtext_curs_waddstr_without_search(&fm2, v->curswin);
80
81  /* print the message at the bottom */
82  wmove(v->curswin, v->winlines-1, 0);
83  wattrset(v->curswin, A_REVERSE);
84  if (v->textlines - v->topline > v->winlines-BOTTOM_OFFSET) {
85    waddstr(v->curswin, "--More-- (Space to see more, 'q' to quit)");
86  } else {
87    waddstr(v->curswin, "--End-- (Press 'q' to quit)");
88  }
89  wattroff(v->curswin, A_REVERSE);
90
91  owl_fmtext_cleanup(&fm1);
92  owl_fmtext_cleanup(&fm2);
93}
94
95void owl_viewwin_pagedown(owl_viewwin *v)
96{
97  v->topline+=v->winlines - BOTTOM_OFFSET;
98  if ( (v->topline+v->winlines-BOTTOM_OFFSET) > v->textlines) {
99    v->topline = v->textlines - v->winlines + BOTTOM_OFFSET;
100  }
101}
102
103void owl_viewwin_linedown(owl_viewwin *v)
104{
105  v->topline++;
106  if ( (v->topline+v->winlines-BOTTOM_OFFSET) > v->textlines) {
107    v->topline = v->textlines - v->winlines + BOTTOM_OFFSET;
108  }
109}
110
111void owl_viewwin_pageup(owl_viewwin *v)
112{
113  v->topline-=v->winlines;
114  if (v->topline<0) v->topline=0;
115}
116
117void owl_viewwin_lineup(owl_viewwin *v)
118{
119  v->topline--;
120  if (v->topline<0) v->topline=0;
121}
122
123void owl_viewwin_right(owl_viewwin *v, int n)
124{
125  v->rightshift+=n;
126}
127
128void owl_viewwin_left(owl_viewwin *v, int n)
129{
130  v->rightshift-=n;
131  if (v->rightshift<0) v->rightshift=0;
132}
133
134void owl_viewwin_top(owl_viewwin *v)
135{
136  v->topline=0;
137  v->rightshift=0;
138}
139
140void owl_viewwin_bottom(owl_viewwin *v)
141{
142  v->topline = v->textlines - v->winlines + BOTTOM_OFFSET;
143}
144
145void owl_viewwin_cleanup(owl_viewwin *v)
146{
147  if (v->onclose_hook) {
148    v->onclose_hook(v, v->onclose_hook_data);
149    v->onclose_hook = NULL;
150    v->onclose_hook_data = NULL;
151  }
152  owl_fmtext_cleanup(&(v->fmtext));
153}
Note: See TracBrowser for help on using the repository browser.