[7d4fbcd] | 1 | #include <string.h> |
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| 2 | #include "owl.h" |
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| 3 | |
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[1aee7d9] | 4 | static const char fileIdent[] = "$Id$"; |
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| 5 | |
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[7d4fbcd] | 6 | #define BOTTOM_OFFSET 1 |
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| 7 | |
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| 8 | void owl_viewwin_init_text(owl_viewwin *v, WINDOW *win, int winlines, int wincols, char *text) { |
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| 9 | /* initialize the viewwin e. |
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| 10 | * 'win' is an already initialzed curses window that will be used by viewwin |
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| 11 | */ |
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| 12 | |
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| 13 | owl_fmtext_init_null(&(v->fmtext)); |
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| 14 | if (text) { |
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| 15 | owl_fmtext_append_normal(&(v->fmtext), text); |
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| 16 | if (text[strlen(text)-1]!='\n') { |
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| 17 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 18 | } |
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| 19 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 20 | } |
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| 21 | v->topline=0; |
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| 22 | v->rightshift=0; |
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| 23 | v->winlines=winlines; |
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| 24 | v->wincols=wincols; |
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| 25 | v->curswin=win; |
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| 26 | } |
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| 27 | |
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| 28 | void owl_viewwin_init_fmtext(owl_viewwin *v, WINDOW *win, int winlines, int wincols, owl_fmtext *fmtext) { |
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| 29 | /* initialize the viewwin e. |
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| 30 | * 'win' is an already initialzed curses window that will be used by viewwin |
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| 31 | */ |
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| 32 | |
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| 33 | owl_fmtext_copy(&(v->fmtext), fmtext); |
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| 34 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 35 | v->topline=0; |
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| 36 | v->rightshift=0; |
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| 37 | v->winlines=winlines; |
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| 38 | v->wincols=wincols; |
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| 39 | v->curswin=win; |
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| 40 | } |
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| 41 | |
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| 42 | void owl_viewwin_set_curswin(owl_viewwin *v, WINDOW *w, int winlines, int wincols) { |
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| 43 | v->curswin=w; |
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| 44 | v->winlines=winlines; |
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| 45 | v->wincols=wincols; |
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| 46 | } |
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| 47 | |
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| 48 | void owl_viewwin_redisplay(owl_viewwin *v, int update) { |
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| 49 | /* regenerate text on the curses window. */ |
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| 50 | /* if update == 1 then do a doupdate() */ |
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| 51 | |
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| 52 | owl_fmtext fm1, fm2; |
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| 53 | |
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| 54 | werase(v->curswin); |
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| 55 | wmove(v->curswin, 0, 0); |
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| 56 | |
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| 57 | owl_fmtext_truncate_lines(&(v->fmtext), v->topline, v->winlines-BOTTOM_OFFSET, &fm1); |
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| 58 | owl_fmtext_truncate_cols(&fm1, v->rightshift, v->wincols-1+v->rightshift, &fm2); |
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| 59 | |
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| 60 | owl_fmtext_curs_waddstr(&fm2, v->curswin); |
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| 61 | |
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| 62 | /* print the message at the bottom */ |
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| 63 | wmove(v->curswin, v->winlines-1, 0); |
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| 64 | wattrset(v->curswin, A_REVERSE); |
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| 65 | if (v->textlines - v->topline > v->winlines-BOTTOM_OFFSET - 1) { |
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| 66 | waddstr(v->curswin, "--More-- (Space to see more, 'q' to quit)"); |
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| 67 | } else { |
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| 68 | waddstr(v->curswin, "--End-- (Press 'q' to quit)"); |
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| 69 | } |
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| 70 | wattroff(v->curswin, A_REVERSE); |
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| 71 | wnoutrefresh(v->curswin); |
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| 72 | |
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| 73 | if (update==1) { |
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| 74 | doupdate(); |
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| 75 | } |
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| 76 | } |
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| 77 | |
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| 78 | void owl_viewwin_pagedown(owl_viewwin *v) { |
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| 79 | v->topline+=v->winlines - BOTTOM_OFFSET; |
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| 80 | if ( (v->topline+v->winlines-BOTTOM_OFFSET) > v->textlines) { |
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| 81 | v->topline = v->textlines - v->winlines + BOTTOM_OFFSET; |
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| 82 | } |
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| 83 | } |
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| 84 | |
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| 85 | void owl_viewwin_linedown(owl_viewwin *v) { |
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| 86 | v->topline++; |
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| 87 | if ( (v->topline+v->winlines-BOTTOM_OFFSET) > v->textlines) { |
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| 88 | v->topline = v->textlines - v->winlines + BOTTOM_OFFSET; |
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| 89 | } |
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| 90 | } |
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| 91 | |
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| 92 | void owl_viewwin_pageup(owl_viewwin *v) { |
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| 93 | v->topline-=v->winlines; |
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| 94 | if (v->topline<0) v->topline=0; |
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| 95 | } |
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| 96 | |
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| 97 | void owl_viewwin_lineup(owl_viewwin *v) { |
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| 98 | v->topline--; |
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| 99 | if (v->topline<0) v->topline=0; |
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| 100 | } |
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| 101 | |
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| 102 | void owl_viewwin_right(owl_viewwin *v, int n) { |
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| 103 | v->rightshift+=n; |
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| 104 | } |
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| 105 | |
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| 106 | void owl_viewwin_left(owl_viewwin *v, int n) { |
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| 107 | v->rightshift-=n; |
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| 108 | if (v->rightshift<0) v->rightshift=0; |
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| 109 | } |
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| 110 | |
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| 111 | void owl_viewwin_top(owl_viewwin *v) { |
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| 112 | v->topline=0; |
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| 113 | v->rightshift=0; |
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| 114 | } |
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| 115 | |
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| 116 | void owl_viewwin_bottom(owl_viewwin *v) { |
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| 117 | v->topline = v->textlines - v->winlines + BOTTOM_OFFSET; |
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| 118 | } |
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| 119 | |
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| 120 | void owl_viewwin_free(owl_viewwin *v) { |
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| 121 | owl_fmtext_free(&(v->fmtext)); |
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| 122 | } |
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