[7d4fbcd] | 1 | #include <string.h> |
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| 2 | #include "owl.h" |
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| 3 | |
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| 4 | #define BOTTOM_OFFSET 1 |
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| 5 | |
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[0b9e607] | 6 | static void owl_viewwin_redraw(owl_window *w, WINDOW *curswin, void *user_data); |
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| 7 | |
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[b2b0773] | 8 | /* initialize the viewwin e. 'win' is an already initialzed curses |
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| 9 | * window that will be used by viewwin |
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| 10 | */ |
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[68f63a2] | 11 | void owl_viewwin_init_text(owl_viewwin *v, owl_window *win, const char *text) |
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[b2b0773] | 12 | { |
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[7d4fbcd] | 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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[4083c49] | 16 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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[7d4fbcd] | 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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[afbf668] | 23 | v->onclose_hook = NULL; |
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[68f63a2] | 24 | |
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| 25 | owl_viewwin_set_window(v, win); |
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[afbf668] | 26 | } |
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| 27 | |
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[e19eb97] | 28 | void owl_viewwin_append_text(owl_viewwin *v, const char *text) { |
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[afbf668] | 29 | owl_fmtext_append_normal(&(v->fmtext), text); |
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[5b68c05] | 30 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 31 | owl_viewwin_dirty(v); |
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| 32 | } |
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| 33 | |
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| 34 | /* Schedule a redraw of 'v'. Exported for hooking into the search |
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| 35 | string; when we have some way of listening for changes, this can be |
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| 36 | removed. */ |
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| 37 | void owl_viewwin_dirty(owl_viewwin *v) |
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| 38 | { |
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| 39 | if (v->window) |
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[68f63a2] | 40 | owl_window_dirty(v->window); |
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[7d4fbcd] | 41 | } |
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| 42 | |
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[b2b0773] | 43 | /* initialize the viewwin e. 'win' is an already initialzed curses |
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| 44 | * window that will be used by viewwin |
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| 45 | */ |
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[68f63a2] | 46 | void owl_viewwin_init_fmtext(owl_viewwin *v, owl_window *win, const owl_fmtext *fmtext) |
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[b2b0773] | 47 | { |
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[dd6af02] | 48 | char *text; |
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| 49 | |
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[7d4fbcd] | 50 | owl_fmtext_copy(&(v->fmtext), fmtext); |
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[dd6af02] | 51 | text = owl_fmtext_print_plain(fmtext); |
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| 52 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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| 53 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 54 | } |
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[3e55268] | 55 | owl_free(text); |
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[7d4fbcd] | 56 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 57 | v->topline=0; |
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| 58 | v->rightshift=0; |
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[68f63a2] | 59 | |
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| 60 | owl_viewwin_set_window(v, win); |
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[7d4fbcd] | 61 | } |
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| 62 | |
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[68f63a2] | 63 | void owl_viewwin_set_window(owl_viewwin *v, owl_window *w) |
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[b2b0773] | 64 | { |
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[68f63a2] | 65 | if (v->window) { |
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[7a6e6c7] | 66 | g_signal_handler_disconnect(v->window, v->sig_redraw_id); |
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[69873f7] | 67 | g_object_unref(v->window); |
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[68f63a2] | 68 | } |
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| 69 | v->window = w; |
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| 70 | if (w) { |
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[69873f7] | 71 | g_object_ref(v->window); |
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[0b9e607] | 72 | v->sig_redraw_id = g_signal_connect(w, "redraw", G_CALLBACK(owl_viewwin_redraw), v); |
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[68f63a2] | 73 | } |
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[7d4fbcd] | 74 | } |
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| 75 | |
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[afbf668] | 76 | void owl_viewwin_set_onclose_hook(owl_viewwin *v, void (*onclose_hook) (owl_viewwin *vwin, void *data), void *onclose_hook_data) { |
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| 77 | v->onclose_hook = onclose_hook; |
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| 78 | v->onclose_hook_data = onclose_hook_data; |
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| 79 | } |
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| 80 | |
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[b2b0773] | 81 | /* regenerate text on the curses window. */ |
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[0b9e607] | 82 | static void owl_viewwin_redraw(owl_window *w, WINDOW *curswin, void *user_data) |
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[b2b0773] | 83 | { |
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[7d4fbcd] | 84 | owl_fmtext fm1, fm2; |
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[68f63a2] | 85 | owl_viewwin *v = user_data; |
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[c447d9c] | 86 | int winlines, wincols; |
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| 87 | |
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| 88 | owl_window_get_position(w, &winlines, &wincols, 0, 0); |
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[7d4fbcd] | 89 | |
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[68f63a2] | 90 | werase(curswin); |
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| 91 | wmove(curswin, 0, 0); |
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[7d4fbcd] | 92 | |
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[af2ca19] | 93 | owl_fmtext_init_null(&fm1); |
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| 94 | owl_fmtext_init_null(&fm2); |
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| 95 | |
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[c447d9c] | 96 | owl_fmtext_truncate_lines(&(v->fmtext), v->topline, winlines-BOTTOM_OFFSET, &fm1); |
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| 97 | owl_fmtext_truncate_cols(&fm1, v->rightshift, wincols-1+v->rightshift, &fm2); |
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[7d4fbcd] | 98 | |
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[449c682] | 99 | owl_fmtext_curs_waddstr(&fm2, curswin); |
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[7d4fbcd] | 100 | |
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| 101 | /* print the message at the bottom */ |
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[c447d9c] | 102 | wmove(curswin, winlines-1, 0); |
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[68f63a2] | 103 | wattrset(curswin, A_REVERSE); |
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[c447d9c] | 104 | if (v->textlines - v->topline > winlines-BOTTOM_OFFSET) { |
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[68f63a2] | 105 | waddstr(curswin, "--More-- (Space to see more, 'q' to quit)"); |
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[7d4fbcd] | 106 | } else { |
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[68f63a2] | 107 | waddstr(curswin, "--End-- (Press 'q' to quit)"); |
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[7d4fbcd] | 108 | } |
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[68f63a2] | 109 | wattroff(curswin, A_REVERSE); |
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[7d4fbcd] | 110 | |
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[7ab0020] | 111 | owl_fmtext_cleanup(&fm1); |
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| 112 | owl_fmtext_cleanup(&fm2); |
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[7d4fbcd] | 113 | } |
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| 114 | |
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[b2b0773] | 115 | void owl_viewwin_pagedown(owl_viewwin *v) |
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| 116 | { |
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[c447d9c] | 117 | int winlines; |
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| 118 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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| 119 | v->topline+=winlines - BOTTOM_OFFSET; |
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| 120 | if ( (v->topline+winlines-BOTTOM_OFFSET) > v->textlines) { |
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| 121 | v->topline = v->textlines - winlines + BOTTOM_OFFSET; |
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[7d4fbcd] | 122 | } |
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[5b68c05] | 123 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 124 | } |
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| 125 | |
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[b2b0773] | 126 | void owl_viewwin_linedown(owl_viewwin *v) |
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| 127 | { |
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[c447d9c] | 128 | int winlines; |
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| 129 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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[7d4fbcd] | 130 | v->topline++; |
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[c447d9c] | 131 | if ( (v->topline+winlines-BOTTOM_OFFSET) > v->textlines) { |
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| 132 | v->topline = v->textlines - winlines + BOTTOM_OFFSET; |
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[7d4fbcd] | 133 | } |
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[5b68c05] | 134 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 135 | } |
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| 136 | |
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[b2b0773] | 137 | void owl_viewwin_pageup(owl_viewwin *v) |
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| 138 | { |
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[c447d9c] | 139 | int winlines; |
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| 140 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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| 141 | v->topline-=winlines; |
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[7d4fbcd] | 142 | if (v->topline<0) v->topline=0; |
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[5b68c05] | 143 | owl_viewwin_dirty(v); |
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| 144 | |
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[7d4fbcd] | 145 | } |
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| 146 | |
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[b2b0773] | 147 | void owl_viewwin_lineup(owl_viewwin *v) |
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| 148 | { |
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[7d4fbcd] | 149 | v->topline--; |
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| 150 | if (v->topline<0) v->topline=0; |
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[5b68c05] | 151 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 152 | } |
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| 153 | |
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[b2b0773] | 154 | void owl_viewwin_right(owl_viewwin *v, int n) |
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| 155 | { |
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[7d4fbcd] | 156 | v->rightshift+=n; |
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[5b68c05] | 157 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 158 | } |
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| 159 | |
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[b2b0773] | 160 | void owl_viewwin_left(owl_viewwin *v, int n) |
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| 161 | { |
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[7d4fbcd] | 162 | v->rightshift-=n; |
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| 163 | if (v->rightshift<0) v->rightshift=0; |
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[5b68c05] | 164 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 165 | } |
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| 166 | |
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[b2b0773] | 167 | void owl_viewwin_top(owl_viewwin *v) |
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| 168 | { |
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[7d4fbcd] | 169 | v->topline=0; |
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| 170 | v->rightshift=0; |
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[5b68c05] | 171 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 172 | } |
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| 173 | |
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[b2b0773] | 174 | void owl_viewwin_bottom(owl_viewwin *v) |
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| 175 | { |
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[c447d9c] | 176 | int winlines; |
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| 177 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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| 178 | v->topline = v->textlines - winlines + BOTTOM_OFFSET; |
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[5b68c05] | 179 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 180 | } |
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| 181 | |
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[963b471] | 182 | void owl_viewwin_cleanup(owl_viewwin *v) |
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[b2b0773] | 183 | { |
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[5f7eadf] | 184 | owl_viewwin_set_window(v, NULL); |
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[afbf668] | 185 | if (v->onclose_hook) { |
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| 186 | v->onclose_hook(v, v->onclose_hook_data); |
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[8721756] | 187 | v->onclose_hook = NULL; |
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| 188 | v->onclose_hook_data = NULL; |
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[afbf668] | 189 | } |
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[7ab0020] | 190 | owl_fmtext_cleanup(&(v->fmtext)); |
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[7d4fbcd] | 191 | } |
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