source: viewwin.c @ 8830df47

release-1.10release-1.6release-1.7release-1.8release-1.9
Last change on this file since 8830df47 was 4cca591, checked in by David Benjamin <davidben@mit.edu>, 14 years ago
Drop doupdate call in owl_viewwin_redisplay Instead, set refresh flag and let the main loop take care of it.
  • Property mode set to 100644
File size: 3.8 KB
RevLine 
[7d4fbcd]1#include <string.h>
2#include "owl.h"
3
4#define BOTTOM_OFFSET 1
5
[b2b0773]6/* initialize the viewwin e.  'win' is an already initialzed curses
7 * window that will be used by viewwin
8 */
[e19eb97]9void owl_viewwin_init_text(owl_viewwin *v, WINDOW *win, int winlines, int wincols, const char *text)
[b2b0773]10{
[7d4fbcd]11  owl_fmtext_init_null(&(v->fmtext));
12  if (text) {
13    owl_fmtext_append_normal(&(v->fmtext), text);
[4083c49]14    if (text[0] != '\0' && text[strlen(text) - 1] != '\n') {
[7d4fbcd]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;
[afbf668]24  v->onclose_hook = NULL;
25}
26
[e19eb97]27void owl_viewwin_append_text(owl_viewwin *v, const char *text) {
[afbf668]28    owl_fmtext_append_normal(&(v->fmtext), text);
29    v->textlines=owl_fmtext_num_lines(&(v->fmtext)); 
[7d4fbcd]30}
31
[b2b0773]32/* initialize the viewwin e.  'win' is an already initialzed curses
33 * window that will be used by viewwin
34 */
[075ba92]35void owl_viewwin_init_fmtext(owl_viewwin *v, WINDOW *win, int winlines, int wincols, const owl_fmtext *fmtext)
[b2b0773]36{
[dd6af02]37  char *text;
38
[7d4fbcd]39  owl_fmtext_copy(&(v->fmtext), fmtext);
[dd6af02]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  }
[3e55268]44  owl_free(text);
[7d4fbcd]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
[b2b0773]53void owl_viewwin_set_curswin(owl_viewwin *v, WINDOW *w, int winlines, int wincols)
54{
[7d4fbcd]55  v->curswin=w;
56  v->winlines=winlines;
57  v->wincols=wincols;
58}
59
[afbf668]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
[b2b0773]65/* regenerate text on the curses window. */
[4cca591]66void owl_viewwin_redisplay(owl_viewwin *v)
[b2b0773]67{
[7d4fbcd]68  owl_fmtext fm1, fm2;
69 
70  werase(v->curswin);
71  wmove(v->curswin, 0, 0);
72
[af2ca19]73  owl_fmtext_init_null(&fm1);
74  owl_fmtext_init_null(&fm2);
75 
[7d4fbcd]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
[47519e1b]79  owl_fmtext_curs_waddstr_without_search(&fm2, v->curswin);
[7d4fbcd]80
81  /* print the message at the bottom */
82  wmove(v->curswin, v->winlines-1, 0);
83  wattrset(v->curswin, A_REVERSE);
[3a2daac]84  if (v->textlines - v->topline > v->winlines-BOTTOM_OFFSET) {
[7d4fbcd]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);
[8ae2de9]90  update_panels();
[7d4fbcd]91
[7ab0020]92  owl_fmtext_cleanup(&fm1);
93  owl_fmtext_cleanup(&fm2);
[7d4fbcd]94}
95
[b2b0773]96void owl_viewwin_pagedown(owl_viewwin *v)
97{
[7d4fbcd]98  v->topline+=v->winlines - BOTTOM_OFFSET;
99  if ( (v->topline+v->winlines-BOTTOM_OFFSET) > v->textlines) {
100    v->topline = v->textlines - v->winlines + BOTTOM_OFFSET;
101  }
102}
103
[b2b0773]104void owl_viewwin_linedown(owl_viewwin *v)
105{
[7d4fbcd]106  v->topline++;
107  if ( (v->topline+v->winlines-BOTTOM_OFFSET) > v->textlines) {
108    v->topline = v->textlines - v->winlines + BOTTOM_OFFSET;
109  }
110}
111
[b2b0773]112void owl_viewwin_pageup(owl_viewwin *v)
113{
[7d4fbcd]114  v->topline-=v->winlines;
115  if (v->topline<0) v->topline=0;
116}
117
[b2b0773]118void owl_viewwin_lineup(owl_viewwin *v)
119{
[7d4fbcd]120  v->topline--;
121  if (v->topline<0) v->topline=0;
122}
123
[b2b0773]124void owl_viewwin_right(owl_viewwin *v, int n)
125{
[7d4fbcd]126  v->rightshift+=n;
127}
128
[b2b0773]129void owl_viewwin_left(owl_viewwin *v, int n)
130{
[7d4fbcd]131  v->rightshift-=n;
132  if (v->rightshift<0) v->rightshift=0;
133}
134
[b2b0773]135void owl_viewwin_top(owl_viewwin *v)
136{
[7d4fbcd]137  v->topline=0;
138  v->rightshift=0;
139}
140
[b2b0773]141void owl_viewwin_bottom(owl_viewwin *v)
142{
[7d4fbcd]143  v->topline = v->textlines - v->winlines + BOTTOM_OFFSET;
144}
145
[963b471]146void owl_viewwin_cleanup(owl_viewwin *v)
[b2b0773]147{
[afbf668]148  if (v->onclose_hook) {
149    v->onclose_hook(v, v->onclose_hook_data);
[8721756]150    v->onclose_hook = NULL;
151    v->onclose_hook_data = NULL;
[afbf668]152  }
[7ab0020]153  owl_fmtext_cleanup(&(v->fmtext));
[7d4fbcd]154}
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