[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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[9116936] | 5 | #define EMPTY_INDICATOR "~" |
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[7d4fbcd] | 6 | |
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[0b9e607] | 7 | static void owl_viewwin_redraw(owl_window *w, WINDOW *curswin, void *user_data); |
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[61c1f19] | 8 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w); |
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[0b9e607] | 9 | |
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[9eb38bb] | 10 | /* Create a viewwin. 'win' is an already initialized owl_window that |
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| 11 | * will be used by the viewwin |
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[b2b0773] | 12 | */ |
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[9eb38bb] | 13 | owl_viewwin *owl_viewwin_new_text(owl_window *win, const char *text) |
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[b2b0773] | 14 | { |
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[9eb38bb] | 15 | owl_viewwin *v = owl_malloc(sizeof(owl_viewwin)); |
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| 16 | memset(v, 0, sizeof(*v)); |
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[7d4fbcd] | 17 | owl_fmtext_init_null(&(v->fmtext)); |
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| 18 | if (text) { |
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| 19 | owl_fmtext_append_normal(&(v->fmtext), text); |
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[4083c49] | 20 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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[7d4fbcd] | 21 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 22 | } |
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| 23 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 24 | } |
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| 25 | v->topline=0; |
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| 26 | v->rightshift=0; |
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[afbf668] | 27 | v->onclose_hook = NULL; |
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[68f63a2] | 28 | |
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| 29 | owl_viewwin_set_window(v, win); |
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[9eb38bb] | 30 | return v; |
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[afbf668] | 31 | } |
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| 32 | |
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[9eb38bb] | 33 | /* Create a viewwin. 'win' is an already initialized owl_window that |
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| 34 | * will be used by the viewwin |
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[b2b0773] | 35 | */ |
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[9eb38bb] | 36 | owl_viewwin *owl_viewwin_new_fmtext(owl_window *win, const owl_fmtext *fmtext) |
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[b2b0773] | 37 | { |
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[dd6af02] | 38 | char *text; |
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[9eb38bb] | 39 | owl_viewwin *v = owl_malloc(sizeof(owl_viewwin)); |
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| 40 | memset(v, 0, sizeof(*v)); |
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[dd6af02] | 41 | |
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[7d4fbcd] | 42 | owl_fmtext_copy(&(v->fmtext), fmtext); |
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[dd6af02] | 43 | text = owl_fmtext_print_plain(fmtext); |
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| 44 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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| 45 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 46 | } |
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[3e55268] | 47 | owl_free(text); |
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[7d4fbcd] | 48 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 49 | v->topline=0; |
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| 50 | v->rightshift=0; |
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[68f63a2] | 51 | |
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| 52 | owl_viewwin_set_window(v, win); |
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[9eb38bb] | 53 | return v; |
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[7d4fbcd] | 54 | } |
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| 55 | |
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[61c1f19] | 56 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w) |
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[b2b0773] | 57 | { |
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[68f63a2] | 58 | v->window = w; |
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| 59 | if (w) { |
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[69873f7] | 60 | g_object_ref(v->window); |
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[0b9e607] | 61 | v->sig_redraw_id = g_signal_connect(w, "redraw", G_CALLBACK(owl_viewwin_redraw), v); |
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[68f63a2] | 62 | } |
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[7d4fbcd] | 63 | } |
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| 64 | |
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[afbf668] | 65 | 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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| 66 | v->onclose_hook = onclose_hook; |
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| 67 | v->onclose_hook_data = onclose_hook_data; |
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| 68 | } |
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| 69 | |
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[b2b0773] | 70 | /* regenerate text on the curses window. */ |
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[0b9e607] | 71 | static void owl_viewwin_redraw(owl_window *w, WINDOW *curswin, void *user_data) |
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[b2b0773] | 72 | { |
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[7d4fbcd] | 73 | owl_fmtext fm1, fm2; |
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[68f63a2] | 74 | owl_viewwin *v = user_data; |
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[c447d9c] | 75 | int winlines, wincols; |
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[9116936] | 76 | int y; |
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[c447d9c] | 77 | |
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| 78 | owl_window_get_position(w, &winlines, &wincols, 0, 0); |
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[7d4fbcd] | 79 | |
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[68f63a2] | 80 | werase(curswin); |
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| 81 | wmove(curswin, 0, 0); |
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[7d4fbcd] | 82 | |
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[af2ca19] | 83 | owl_fmtext_init_null(&fm1); |
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| 84 | owl_fmtext_init_null(&fm2); |
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| 85 | |
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[c447d9c] | 86 | owl_fmtext_truncate_lines(&(v->fmtext), v->topline, winlines-BOTTOM_OFFSET, &fm1); |
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| 87 | owl_fmtext_truncate_cols(&fm1, v->rightshift, wincols-1+v->rightshift, &fm2); |
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[7d4fbcd] | 88 | |
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[449c682] | 89 | owl_fmtext_curs_waddstr(&fm2, curswin); |
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[7d4fbcd] | 90 | |
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[9116936] | 91 | /* Fill remaining lines with tildes. */ |
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| 92 | y = v->textlines - v->topline; |
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| 93 | wmove(curswin, y, 0); |
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| 94 | for (; y < winlines-BOTTOM_OFFSET; y++) { |
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| 95 | waddstr(curswin, EMPTY_INDICATOR); |
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| 96 | waddstr(curswin, "\n"); |
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| 97 | } |
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| 98 | |
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[7d4fbcd] | 99 | /* print the message at the bottom */ |
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[c447d9c] | 100 | wmove(curswin, winlines-1, 0); |
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[68f63a2] | 101 | wattrset(curswin, A_REVERSE); |
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[c447d9c] | 102 | if (v->textlines - v->topline > winlines-BOTTOM_OFFSET) { |
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[68f63a2] | 103 | waddstr(curswin, "--More-- (Space to see more, 'q' to quit)"); |
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[7d4fbcd] | 104 | } else { |
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[68f63a2] | 105 | waddstr(curswin, "--End-- (Press 'q' to quit)"); |
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[7d4fbcd] | 106 | } |
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[68f63a2] | 107 | wattroff(curswin, A_REVERSE); |
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[7d4fbcd] | 108 | |
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[7ab0020] | 109 | owl_fmtext_cleanup(&fm1); |
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| 110 | owl_fmtext_cleanup(&fm2); |
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[7d4fbcd] | 111 | } |
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| 112 | |
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[2640b63] | 113 | void owl_viewwin_append_text(owl_viewwin *v, const char *text) { |
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| 114 | owl_fmtext_append_normal(&(v->fmtext), text); |
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| 115 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 116 | owl_viewwin_dirty(v); |
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| 117 | } |
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| 118 | |
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| 119 | /* Schedule a redraw of 'v'. Exported for hooking into the search |
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| 120 | string; when we have some way of listening for changes, this can be |
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| 121 | removed. */ |
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| 122 | void owl_viewwin_dirty(owl_viewwin *v) |
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| 123 | { |
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| 124 | if (v->window) |
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| 125 | owl_window_dirty(v->window); |
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| 126 | } |
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| 127 | |
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[d574d61] | 128 | void owl_viewwin_down(owl_viewwin *v, int amount) { |
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[c447d9c] | 129 | int winlines; |
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| 130 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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[fa23002] | 131 | /* Don't scroll past the bottom. */ |
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| 132 | amount = MIN(amount, v->textlines - (v->topline + winlines - BOTTOM_OFFSET)); |
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| 133 | /* But if we're already past the bottom, don't back up either. */ |
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| 134 | if (amount > 0) { |
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| 135 | v->topline += amount; |
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| 136 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 137 | } |
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| 138 | } |
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| 139 | |
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[d574d61] | 140 | void owl_viewwin_up(owl_viewwin *v, int amount) |
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| 141 | { |
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| 142 | v->topline -= amount; |
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| 143 | if (v->topline<0) v->topline=0; |
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| 144 | owl_viewwin_dirty(v); |
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| 145 | } |
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| 146 | |
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| 147 | void owl_viewwin_pagedown(owl_viewwin *v) |
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[b2b0773] | 148 | { |
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[c447d9c] | 149 | int winlines; |
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| 150 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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[d574d61] | 151 | owl_viewwin_down(v, winlines - BOTTOM_OFFSET); |
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| 152 | } |
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| 153 | |
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| 154 | void owl_viewwin_linedown(owl_viewwin *v) |
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| 155 | { |
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| 156 | owl_viewwin_down(v, 1); |
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[7d4fbcd] | 157 | } |
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| 158 | |
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[b2b0773] | 159 | void owl_viewwin_pageup(owl_viewwin *v) |
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| 160 | { |
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[c447d9c] | 161 | int winlines; |
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| 162 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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[d574d61] | 163 | owl_viewwin_up(v, winlines - BOTTOM_OFFSET); |
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[7d4fbcd] | 164 | } |
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| 165 | |
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[b2b0773] | 166 | void owl_viewwin_lineup(owl_viewwin *v) |
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| 167 | { |
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[d574d61] | 168 | owl_viewwin_up(v, 1); |
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[7d4fbcd] | 169 | } |
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| 170 | |
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[b2b0773] | 171 | void owl_viewwin_right(owl_viewwin *v, int n) |
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| 172 | { |
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[7d4fbcd] | 173 | v->rightshift+=n; |
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[5b68c05] | 174 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 175 | } |
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| 176 | |
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[b2b0773] | 177 | void owl_viewwin_left(owl_viewwin *v, int n) |
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| 178 | { |
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[7d4fbcd] | 179 | v->rightshift-=n; |
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| 180 | if (v->rightshift<0) v->rightshift=0; |
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[5b68c05] | 181 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 182 | } |
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| 183 | |
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[b2b0773] | 184 | void owl_viewwin_top(owl_viewwin *v) |
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| 185 | { |
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[7d4fbcd] | 186 | v->topline=0; |
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| 187 | v->rightshift=0; |
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[5b68c05] | 188 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 189 | } |
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| 190 | |
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[b2b0773] | 191 | void owl_viewwin_bottom(owl_viewwin *v) |
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| 192 | { |
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[c447d9c] | 193 | int winlines; |
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| 194 | owl_window_get_position(v->window, &winlines, 0, 0, 0); |
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| 195 | v->topline = v->textlines - winlines + BOTTOM_OFFSET; |
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[5b68c05] | 196 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 197 | } |
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| 198 | |
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[b8742ba] | 199 | /* Scroll in 'direction' to the next line containing 're' in 'v', |
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| 200 | * starting from the current line. Returns 0 if no occurrence is |
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| 201 | * found. |
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| 202 | * |
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| 203 | * If mode==0 then stay on the current line if it matches. |
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| 204 | */ |
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| 205 | int owl_viewwin_search(owl_viewwin *v, const owl_regex *re, int mode, int direction) |
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| 206 | { |
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| 207 | int start, end, offset; |
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| 208 | owl_fmtext_line_extents(&v->fmtext, v->topline, &start, &end); |
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| 209 | if (direction == OWL_DIRECTION_DOWNWARDS) { |
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| 210 | offset = owl_fmtext_search(&v->fmtext, re, mode ? end : start); |
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| 211 | if (offset < 0) |
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| 212 | return 0; |
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| 213 | v->topline = owl_fmtext_line_number(&v->fmtext, offset); |
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| 214 | owl_viewwin_dirty(v); |
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| 215 | return 1; |
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| 216 | } else { |
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| 217 | /* FIXME */ |
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| 218 | owl_function_error("Upwards searching is not implemented in viewwin."); |
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| 219 | return 1; |
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| 220 | } |
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| 221 | } |
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| 222 | |
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[9eb38bb] | 223 | void owl_viewwin_delete(owl_viewwin *v) |
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[b2b0773] | 224 | { |
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[afbf668] | 225 | if (v->onclose_hook) { |
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| 226 | v->onclose_hook(v, v->onclose_hook_data); |
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[8721756] | 227 | v->onclose_hook = NULL; |
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| 228 | v->onclose_hook_data = NULL; |
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[afbf668] | 229 | } |
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[9eb38bb] | 230 | if (v->window) { |
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| 231 | g_signal_handler_disconnect(v->window, v->sig_redraw_id); |
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| 232 | g_object_unref(v->window); |
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| 233 | v->window = NULL; |
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| 234 | } |
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[7ab0020] | 235 | owl_fmtext_cleanup(&(v->fmtext)); |
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[9eb38bb] | 236 | owl_free(v); |
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[7d4fbcd] | 237 | } |
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