[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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[61c1f19] | 7 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w); |
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[0b9e607] | 8 | |
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[9eb38bb] | 9 | /* Create a viewwin. 'win' is an already initialized owl_window that |
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| 10 | * will be used by the viewwin |
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[b2b0773] | 11 | */ |
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[9eb38bb] | 12 | owl_viewwin *owl_viewwin_new_text(owl_window *win, const char *text) |
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[b2b0773] | 13 | { |
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[9eb38bb] | 14 | owl_viewwin *v = owl_malloc(sizeof(owl_viewwin)); |
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| 15 | memset(v, 0, sizeof(*v)); |
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[7d4fbcd] | 16 | owl_fmtext_init_null(&(v->fmtext)); |
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| 17 | if (text) { |
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| 18 | owl_fmtext_append_normal(&(v->fmtext), text); |
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[4083c49] | 19 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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[7d4fbcd] | 20 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 21 | } |
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| 22 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 23 | } |
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| 24 | v->topline=0; |
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| 25 | v->rightshift=0; |
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[afbf668] | 26 | v->onclose_hook = NULL; |
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[68f63a2] | 27 | |
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| 28 | owl_viewwin_set_window(v, win); |
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[9eb38bb] | 29 | return v; |
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[afbf668] | 30 | } |
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| 31 | |
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[e19eb97] | 32 | void owl_viewwin_append_text(owl_viewwin *v, const char *text) { |
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[afbf668] | 33 | owl_fmtext_append_normal(&(v->fmtext), text); |
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[5b68c05] | 34 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 35 | owl_viewwin_dirty(v); |
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| 36 | } |
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| 37 | |
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| 38 | /* Schedule a redraw of 'v'. Exported for hooking into the search |
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| 39 | string; when we have some way of listening for changes, this can be |
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| 40 | removed. */ |
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| 41 | void owl_viewwin_dirty(owl_viewwin *v) |
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| 42 | { |
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| 43 | if (v->window) |
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[68f63a2] | 44 | owl_window_dirty(v->window); |
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[7d4fbcd] | 45 | } |
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| 46 | |
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[9eb38bb] | 47 | /* Create a viewwin. 'win' is an already initialized owl_window that |
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| 48 | * will be used by the viewwin |
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[b2b0773] | 49 | */ |
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[9eb38bb] | 50 | owl_viewwin *owl_viewwin_new_fmtext(owl_window *win, const owl_fmtext *fmtext) |
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[b2b0773] | 51 | { |
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[dd6af02] | 52 | char *text; |
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[9eb38bb] | 53 | owl_viewwin *v = owl_malloc(sizeof(owl_viewwin)); |
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| 54 | memset(v, 0, sizeof(*v)); |
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[dd6af02] | 55 | |
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[7d4fbcd] | 56 | owl_fmtext_copy(&(v->fmtext), fmtext); |
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[dd6af02] | 57 | text = owl_fmtext_print_plain(fmtext); |
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| 58 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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| 59 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 60 | } |
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[3e55268] | 61 | owl_free(text); |
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[7d4fbcd] | 62 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 63 | v->topline=0; |
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| 64 | v->rightshift=0; |
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[68f63a2] | 65 | |
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| 66 | owl_viewwin_set_window(v, win); |
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[9eb38bb] | 67 | return v; |
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[7d4fbcd] | 68 | } |
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| 69 | |
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[61c1f19] | 70 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w) |
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[b2b0773] | 71 | { |
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[68f63a2] | 72 | v->window = w; |
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| 73 | if (w) { |
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[69873f7] | 74 | g_object_ref(v->window); |
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[0b9e607] | 75 | v->sig_redraw_id = g_signal_connect(w, "redraw", G_CALLBACK(owl_viewwin_redraw), v); |
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[68f63a2] | 76 | } |
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[7d4fbcd] | 77 | } |
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| 78 | |
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[afbf668] | 79 | 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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| 80 | v->onclose_hook = onclose_hook; |
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| 81 | v->onclose_hook_data = onclose_hook_data; |
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| 82 | } |
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| 83 | |
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[b2b0773] | 84 | /* regenerate text on the curses window. */ |
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[0b9e607] | 85 | static void owl_viewwin_redraw(owl_window *w, WINDOW *curswin, void *user_data) |
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[b2b0773] | 86 | { |
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[7d4fbcd] | 87 | owl_fmtext fm1, fm2; |
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[68f63a2] | 88 | owl_viewwin *v = user_data; |
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[c447d9c] | 89 | int winlines, wincols; |
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| 90 | |
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| 91 | owl_window_get_position(w, &winlines, &wincols, 0, 0); |
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[7d4fbcd] | 92 | |
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[68f63a2] | 93 | werase(curswin); |
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| 94 | wmove(curswin, 0, 0); |
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[7d4fbcd] | 95 | |
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[af2ca19] | 96 | owl_fmtext_init_null(&fm1); |
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| 97 | owl_fmtext_init_null(&fm2); |
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| 98 | |
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[c447d9c] | 99 | owl_fmtext_truncate_lines(&(v->fmtext), v->topline, winlines-BOTTOM_OFFSET, &fm1); |
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| 100 | owl_fmtext_truncate_cols(&fm1, v->rightshift, wincols-1+v->rightshift, &fm2); |
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[7d4fbcd] | 101 | |
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[449c682] | 102 | owl_fmtext_curs_waddstr(&fm2, curswin); |
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[7d4fbcd] | 103 | |
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| 104 | /* print the message at the bottom */ |
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[c447d9c] | 105 | wmove(curswin, winlines-1, 0); |
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[68f63a2] | 106 | wattrset(curswin, A_REVERSE); |
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[c447d9c] | 107 | if (v->textlines - v->topline > winlines-BOTTOM_OFFSET) { |
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[68f63a2] | 108 | waddstr(curswin, "--More-- (Space to see more, 'q' to quit)"); |
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[7d4fbcd] | 109 | } else { |
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[68f63a2] | 110 | waddstr(curswin, "--End-- (Press 'q' to quit)"); |
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[7d4fbcd] | 111 | } |
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[68f63a2] | 112 | wattroff(curswin, A_REVERSE); |
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[7d4fbcd] | 113 | |
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[7ab0020] | 114 | owl_fmtext_cleanup(&fm1); |
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| 115 | owl_fmtext_cleanup(&fm2); |
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[7d4fbcd] | 116 | } |
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| 117 | |
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[d574d61] | 118 | void owl_viewwin_down(owl_viewwin *v, int amount) { |
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[c447d9c] | 119 | int winlines; |
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| 120 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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[fa23002] | 121 | /* Don't scroll past the bottom. */ |
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| 122 | amount = MIN(amount, v->textlines - (v->topline + winlines - BOTTOM_OFFSET)); |
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| 123 | /* But if we're already past the bottom, don't back up either. */ |
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| 124 | if (amount > 0) { |
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| 125 | v->topline += amount; |
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| 126 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 127 | } |
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| 128 | } |
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| 129 | |
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[d574d61] | 130 | void owl_viewwin_up(owl_viewwin *v, int amount) |
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| 131 | { |
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| 132 | v->topline -= amount; |
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| 133 | if (v->topline<0) v->topline=0; |
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| 134 | owl_viewwin_dirty(v); |
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| 135 | } |
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| 136 | |
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| 137 | void owl_viewwin_pagedown(owl_viewwin *v) |
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[b2b0773] | 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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[d574d61] | 141 | owl_viewwin_down(v, winlines - BOTTOM_OFFSET); |
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| 142 | } |
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| 143 | |
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| 144 | void owl_viewwin_linedown(owl_viewwin *v) |
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| 145 | { |
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| 146 | owl_viewwin_down(v, 1); |
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[7d4fbcd] | 147 | } |
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| 148 | |
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[b2b0773] | 149 | void owl_viewwin_pageup(owl_viewwin *v) |
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| 150 | { |
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[c447d9c] | 151 | int winlines; |
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| 152 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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[d574d61] | 153 | owl_viewwin_up(v, winlines - BOTTOM_OFFSET); |
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[7d4fbcd] | 154 | } |
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| 155 | |
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[b2b0773] | 156 | void owl_viewwin_lineup(owl_viewwin *v) |
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| 157 | { |
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[d574d61] | 158 | owl_viewwin_up(v, 1); |
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[7d4fbcd] | 159 | } |
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| 160 | |
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[b2b0773] | 161 | void owl_viewwin_right(owl_viewwin *v, int n) |
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| 162 | { |
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[7d4fbcd] | 163 | v->rightshift+=n; |
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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_left(owl_viewwin *v, int n) |
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| 168 | { |
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[7d4fbcd] | 169 | v->rightshift-=n; |
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| 170 | if (v->rightshift<0) 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_top(owl_viewwin *v) |
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| 175 | { |
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[7d4fbcd] | 176 | v->topline=0; |
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| 177 | v->rightshift=0; |
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[5b68c05] | 178 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 179 | } |
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| 180 | |
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[b2b0773] | 181 | void owl_viewwin_bottom(owl_viewwin *v) |
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| 182 | { |
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[c447d9c] | 183 | int winlines; |
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| 184 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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| 185 | v->topline = v->textlines - winlines + BOTTOM_OFFSET; |
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[5b68c05] | 186 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 187 | } |
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| 188 | |
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[9eb38bb] | 189 | void owl_viewwin_delete(owl_viewwin *v) |
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[b2b0773] | 190 | { |
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[afbf668] | 191 | if (v->onclose_hook) { |
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| 192 | v->onclose_hook(v, v->onclose_hook_data); |
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[8721756] | 193 | v->onclose_hook = NULL; |
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| 194 | v->onclose_hook_data = NULL; |
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[afbf668] | 195 | } |
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[9eb38bb] | 196 | if (v->window) { |
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| 197 | g_signal_handler_disconnect(v->window, v->sig_redraw_id); |
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| 198 | g_object_unref(v->window); |
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| 199 | v->window = NULL; |
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| 200 | } |
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[7ab0020] | 201 | owl_fmtext_cleanup(&(v->fmtext)); |
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[9eb38bb] | 202 | owl_free(v); |
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[7d4fbcd] | 203 | } |
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