[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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[60c1386] | 6 | static void owl_viewwin_redraw_content(owl_window *w, WINDOW *curswin, void *user_data); |
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| 7 | static void owl_viewwin_redraw_status(owl_window *w, WINDOW *curswin, void *user_data); |
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| 8 | static void owl_viewwin_layout(owl_viewwin *v); |
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[61c1f19] | 9 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w); |
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[0b9e607] | 10 | |
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[9eb38bb] | 11 | /* Create a viewwin. 'win' is an already initialized owl_window that |
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| 12 | * will be used by the viewwin |
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[b2b0773] | 13 | */ |
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[d427f08] | 14 | G_GNUC_WARN_UNUSED_RESULT owl_viewwin *owl_viewwin_new_text(owl_window *win, const char *text) |
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[b2b0773] | 15 | { |
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[96828e4] | 16 | owl_viewwin *v = g_new0(owl_viewwin, 1); |
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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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[d427f08] | 36 | G_GNUC_WARN_UNUSED_RESULT 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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[96828e4] | 39 | owl_viewwin *v = g_new0(owl_viewwin, 1); |
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[dd6af02] | 40 | |
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[7d4fbcd] | 41 | owl_fmtext_copy(&(v->fmtext), fmtext); |
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[dd6af02] | 42 | text = owl_fmtext_print_plain(fmtext); |
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| 43 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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| 44 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 45 | } |
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[ddbbcffa] | 46 | g_free(text); |
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[7d4fbcd] | 47 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 48 | v->topline=0; |
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| 49 | v->rightshift=0; |
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[68f63a2] | 50 | |
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| 51 | owl_viewwin_set_window(v, win); |
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[9eb38bb] | 52 | return v; |
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[7d4fbcd] | 53 | } |
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| 54 | |
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[61c1f19] | 55 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w) |
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[b2b0773] | 56 | { |
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[60c1386] | 57 | v->window = g_object_ref(w); |
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| 58 | v->content = owl_window_new(v->window); |
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| 59 | v->status = owl_window_new(v->window); |
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[09ceee3] | 60 | v->cmdwin = NULL; |
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[60c1386] | 61 | |
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| 62 | v->sig_content_redraw_id = |
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| 63 | g_signal_connect(v->content, "redraw", G_CALLBACK(owl_viewwin_redraw_content), v); |
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| 64 | v->sig_status_redraw_id = |
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| 65 | g_signal_connect(v->status, "redraw", G_CALLBACK(owl_viewwin_redraw_status), v); |
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| 66 | v->sig_resize_id = |
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| 67 | g_signal_connect_swapped(v->window, "resized", G_CALLBACK(owl_viewwin_layout), v); |
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| 68 | owl_viewwin_layout(v); |
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| 69 | |
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| 70 | owl_window_show(v->content); |
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| 71 | owl_window_show(v->status); |
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[7d4fbcd] | 72 | } |
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| 73 | |
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[afbf668] | 74 | 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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| 75 | v->onclose_hook = onclose_hook; |
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| 76 | v->onclose_hook_data = onclose_hook_data; |
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| 77 | } |
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| 78 | |
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[60c1386] | 79 | static void owl_viewwin_layout(owl_viewwin *v) |
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| 80 | { |
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| 81 | int lines, cols; |
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| 82 | owl_window_get_position(v->window, &lines, &cols, NULL, NULL); |
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| 83 | owl_window_set_position(v->content, lines - BOTTOM_OFFSET, cols, 0, 0); |
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[09ceee3] | 84 | /* Only one of these will be visible at a time: */ |
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[60c1386] | 85 | owl_window_set_position(v->status, BOTTOM_OFFSET, cols, lines - BOTTOM_OFFSET, 0); |
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[09ceee3] | 86 | if (v->cmdwin) |
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| 87 | owl_window_set_position(v->cmdwin, BOTTOM_OFFSET, cols, lines - BOTTOM_OFFSET, 0); |
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[60c1386] | 88 | } |
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| 89 | |
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[b2b0773] | 90 | /* regenerate text on the curses window. */ |
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[60c1386] | 91 | static void owl_viewwin_redraw_content(owl_window *w, WINDOW *curswin, void *user_data) |
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[b2b0773] | 92 | { |
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[7d4fbcd] | 93 | owl_fmtext fm1, fm2; |
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[68f63a2] | 94 | owl_viewwin *v = user_data; |
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[c447d9c] | 95 | int winlines, wincols; |
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| 96 | |
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| 97 | owl_window_get_position(w, &winlines, &wincols, 0, 0); |
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[60c1386] | 98 | |
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[68f63a2] | 99 | werase(curswin); |
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| 100 | wmove(curswin, 0, 0); |
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[7d4fbcd] | 101 | |
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[af2ca19] | 102 | owl_fmtext_init_null(&fm1); |
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| 103 | owl_fmtext_init_null(&fm2); |
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[60c1386] | 104 | |
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| 105 | owl_fmtext_truncate_lines(&(v->fmtext), v->topline, winlines, &fm1); |
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[c447d9c] | 106 | owl_fmtext_truncate_cols(&fm1, v->rightshift, wincols-1+v->rightshift, &fm2); |
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[7d4fbcd] | 107 | |
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[237d02c] | 108 | owl_fmtext_curs_waddstr(&fm2, curswin, OWL_FMTEXT_ATTR_NONE, OWL_COLOR_DEFAULT, OWL_COLOR_DEFAULT); |
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[7d4fbcd] | 109 | |
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[60c1386] | 110 | owl_fmtext_cleanup(&fm1); |
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| 111 | owl_fmtext_cleanup(&fm2); |
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| 112 | } |
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| 113 | |
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| 114 | static void owl_viewwin_redraw_status(owl_window *w, WINDOW *curswin, void *user_data) |
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| 115 | { |
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| 116 | owl_viewwin *v = user_data; |
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| 117 | int winlines, wincols; |
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| 118 | |
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| 119 | owl_window_get_position(v->content, &winlines, &wincols, 0, 0); |
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| 120 | |
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| 121 | werase(curswin); |
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| 122 | wmove(curswin, 0, 0); |
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[68f63a2] | 123 | wattrset(curswin, A_REVERSE); |
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[60c1386] | 124 | if (v->textlines - v->topline > winlines) { |
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[68f63a2] | 125 | waddstr(curswin, "--More-- (Space to see more, 'q' to quit)"); |
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[7d4fbcd] | 126 | } else { |
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[68f63a2] | 127 | waddstr(curswin, "--End-- (Press 'q' to quit)"); |
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[7d4fbcd] | 128 | } |
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[68f63a2] | 129 | wattroff(curswin, A_REVERSE); |
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[7d4fbcd] | 130 | } |
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| 131 | |
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[b6cf72f] | 132 | char *owl_viewwin_command_search(owl_viewwin *v, int argc, const char *const *argv, const char *buff) |
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| 133 | { |
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[118c919] | 134 | int direction, consider_current; |
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[b6cf72f] | 135 | const char *buffstart; |
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| 136 | |
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| 137 | direction=OWL_DIRECTION_DOWNWARDS; |
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| 138 | buffstart=skiptokens(buff, 1); |
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| 139 | if (argc>1 && !strcmp(argv[1], "-r")) { |
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| 140 | direction=OWL_DIRECTION_UPWARDS; |
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| 141 | buffstart=skiptokens(buff, 2); |
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| 142 | } |
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| 143 | |
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| 144 | if (argc==1 || (argc==2 && !strcmp(argv[1], "-r"))) { |
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[118c919] | 145 | consider_current = false; |
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[b6cf72f] | 146 | } else { |
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| 147 | owl_function_set_search(buffstart); |
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[118c919] | 148 | consider_current = true; |
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[b6cf72f] | 149 | } |
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| 150 | |
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[118c919] | 151 | if (!owl_viewwin_search(v, owl_global_get_search_re(&g), consider_current, direction)) |
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[4fd211f] | 152 | owl_function_makemsg("No more matches"); |
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[b6cf72f] | 153 | return NULL; |
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| 154 | } |
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| 155 | |
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[d2fd2f7] | 156 | typedef struct _owl_viewwin_search_data { /*noproto*/ |
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| 157 | owl_viewwin *v; |
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| 158 | int direction; |
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| 159 | } owl_viewwin_search_data; |
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| 160 | |
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| 161 | static void owl_viewwin_callback_search(owl_editwin *e) |
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| 162 | { |
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[09065ed] | 163 | int consider_current = false; |
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[d2fd2f7] | 164 | const char *line = owl_editwin_get_text(e); |
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| 165 | owl_viewwin_search_data *data = owl_editwin_get_cbdata(e); |
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[09065ed] | 166 | |
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| 167 | /* Given an empty string, just continue the current search. */ |
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| 168 | if (line && *line) { |
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| 169 | owl_function_set_search(line); |
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| 170 | consider_current = true; |
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| 171 | } |
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[d2fd2f7] | 172 | if (!owl_viewwin_search(data->v, owl_global_get_search_re(&g), |
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[09065ed] | 173 | consider_current, data->direction)) |
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[4fd211f] | 174 | owl_function_makemsg("No matches"); |
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[d2fd2f7] | 175 | } |
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| 176 | |
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| 177 | char *owl_viewwin_command_start_search(owl_viewwin *v, int argc, const char *const *argv, const char *buff) |
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| 178 | { |
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| 179 | int direction; |
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| 180 | const char *buffstart; |
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| 181 | owl_editwin *tw; |
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| 182 | owl_context *ctx; |
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| 183 | owl_viewwin_search_data *data; |
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| 184 | |
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| 185 | direction=OWL_DIRECTION_DOWNWARDS; |
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| 186 | buffstart=skiptokens(buff, 1); |
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| 187 | if (argc>1 && !strcmp(argv[1], "-r")) { |
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| 188 | direction=OWL_DIRECTION_UPWARDS; |
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| 189 | buffstart=skiptokens(buff, 2); |
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| 190 | } |
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| 191 | |
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| 192 | /* TODO: Add a search history? */ |
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| 193 | tw = owl_viewwin_set_typwin_active(v, NULL); |
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| 194 | owl_editwin_set_locktext(tw, (direction == OWL_DIRECTION_DOWNWARDS) ? "/" : "?"); |
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| 195 | owl_editwin_insert_string(tw, buffstart); |
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| 196 | |
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[96828e4] | 197 | data = g_new(owl_viewwin_search_data, 1); |
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[d2fd2f7] | 198 | data->v = v; |
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| 199 | data->direction = direction; |
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| 200 | |
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[4a41f16] | 201 | ctx = owl_editcontext_new(OWL_CTX_EDITLINE, tw, "editline", |
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| 202 | owl_viewwin_deactivate_editcontext, v); |
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[d2fd2f7] | 203 | ctx->cbdata = v; |
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| 204 | owl_global_push_context_obj(&g, ctx); |
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| 205 | owl_editwin_set_callback(tw, owl_viewwin_callback_search); |
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[ddbbcffa] | 206 | owl_editwin_set_cbdata(tw, data, g_free); |
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[4c0ac34] | 207 | /* We aren't saving tw, so release the reference we were given. */ |
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| 208 | owl_editwin_unref(tw); |
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[d2fd2f7] | 209 | return NULL; |
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| 210 | } |
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| 211 | |
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[09ceee3] | 212 | char *owl_viewwin_start_command(owl_viewwin *v, int argc, const char *const *argv, const char *buff) |
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| 213 | { |
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| 214 | owl_editwin *tw; |
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| 215 | owl_context *ctx; |
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| 216 | |
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| 217 | buff = skiptokens(buff, 1); |
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| 218 | |
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| 219 | tw = owl_viewwin_set_typwin_active(v, owl_global_get_cmd_history(&g)); |
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| 220 | owl_editwin_set_locktext(tw, ":"); |
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| 221 | |
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| 222 | owl_editwin_insert_string(tw, buff); |
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| 223 | |
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[4a41f16] | 224 | ctx = owl_editcontext_new(OWL_CTX_EDITLINE, tw, "editline", |
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| 225 | owl_viewwin_deactivate_editcontext, v); |
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[09ceee3] | 226 | owl_global_push_context_obj(&g, ctx); |
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| 227 | owl_editwin_set_callback(tw, owl_callback_command); |
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[4c0ac34] | 228 | /* We aren't saving tw, so release the reference we were given. */ |
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| 229 | owl_editwin_unref(tw); |
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[09ceee3] | 230 | |
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| 231 | return NULL; |
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| 232 | } |
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| 233 | |
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| 234 | void owl_viewwin_deactivate_editcontext(owl_context *ctx) { |
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| 235 | owl_viewwin *v = ctx->cbdata; |
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| 236 | owl_viewwin_set_typwin_inactive(v); |
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| 237 | } |
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| 238 | |
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[d427f08] | 239 | G_GNUC_WARN_UNUSED_RESULT owl_editwin *owl_viewwin_set_typwin_active(owl_viewwin *v, owl_history *hist) { |
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[09ceee3] | 240 | int lines, cols; |
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[1b8c3f8] | 241 | owl_editwin *cmdline; |
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| 242 | if (v->cmdwin) |
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[09ceee3] | 243 | return NULL; |
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| 244 | /* Create the command line. */ |
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| 245 | v->cmdwin = owl_window_new(v->window); |
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| 246 | owl_viewwin_layout(v); |
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| 247 | owl_window_get_position(v->cmdwin, &lines, &cols, NULL, NULL); |
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[1b8c3f8] | 248 | cmdline = owl_editwin_new(v->cmdwin, lines, cols, OWL_EDITWIN_STYLE_ONELINE, hist); |
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[09ceee3] | 249 | /* Swap out the bottom window. */ |
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| 250 | owl_window_hide(v->status); |
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| 251 | owl_window_show(v->cmdwin); |
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[1b8c3f8] | 252 | return cmdline; |
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[09ceee3] | 253 | } |
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| 254 | |
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| 255 | void owl_viewwin_set_typwin_inactive(owl_viewwin *v) { |
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| 256 | if (v->cmdwin) { |
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| 257 | /* Swap out the bottom window. */ |
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| 258 | owl_window_hide(v->cmdwin); |
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| 259 | owl_window_show(v->status); |
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| 260 | /* Destroy the window itself. */ |
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| 261 | owl_window_unlink(v->cmdwin); |
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| 262 | g_object_unref(v->cmdwin); |
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| 263 | v->cmdwin = NULL; |
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| 264 | } |
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| 265 | } |
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| 266 | |
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[2640b63] | 267 | void owl_viewwin_append_text(owl_viewwin *v, const char *text) { |
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| 268 | owl_fmtext_append_normal(&(v->fmtext), text); |
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| 269 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 270 | owl_viewwin_dirty(v); |
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| 271 | } |
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| 272 | |
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| 273 | /* Schedule a redraw of 'v'. Exported for hooking into the search |
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| 274 | string; when we have some way of listening for changes, this can be |
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| 275 | removed. */ |
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| 276 | void owl_viewwin_dirty(owl_viewwin *v) |
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| 277 | { |
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[60c1386] | 278 | owl_window_dirty(v->content); |
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| 279 | owl_window_dirty(v->status); |
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[2640b63] | 280 | } |
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| 281 | |
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[d574d61] | 282 | void owl_viewwin_down(owl_viewwin *v, int amount) { |
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[c447d9c] | 283 | int winlines; |
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[60c1386] | 284 | owl_window_get_position(v->content, &winlines, 0, 0, 0); |
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[fa23002] | 285 | /* Don't scroll past the bottom. */ |
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[60c1386] | 286 | amount = MIN(amount, v->textlines - (v->topline + winlines)); |
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[fa23002] | 287 | /* But if we're already past the bottom, don't back up either. */ |
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| 288 | if (amount > 0) { |
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| 289 | v->topline += amount; |
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| 290 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 291 | } |
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| 292 | } |
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| 293 | |
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[d574d61] | 294 | void owl_viewwin_up(owl_viewwin *v, int amount) |
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| 295 | { |
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| 296 | v->topline -= amount; |
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| 297 | if (v->topline<0) v->topline=0; |
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| 298 | owl_viewwin_dirty(v); |
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| 299 | } |
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| 300 | |
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| 301 | void owl_viewwin_pagedown(owl_viewwin *v) |
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[b2b0773] | 302 | { |
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[c447d9c] | 303 | int winlines; |
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[60c1386] | 304 | owl_window_get_position(v->content, &winlines, 0, 0, 0); |
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| 305 | owl_viewwin_down(v, winlines); |
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[d574d61] | 306 | } |
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| 307 | |
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| 308 | void owl_viewwin_linedown(owl_viewwin *v) |
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| 309 | { |
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| 310 | owl_viewwin_down(v, 1); |
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[7d4fbcd] | 311 | } |
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| 312 | |
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[b2b0773] | 313 | void owl_viewwin_pageup(owl_viewwin *v) |
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| 314 | { |
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[c447d9c] | 315 | int winlines; |
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[60c1386] | 316 | owl_window_get_position(v->content, &winlines, 0, 0, 0); |
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| 317 | owl_viewwin_up(v, winlines); |
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[7d4fbcd] | 318 | } |
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| 319 | |
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[b2b0773] | 320 | void owl_viewwin_lineup(owl_viewwin *v) |
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| 321 | { |
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[d574d61] | 322 | owl_viewwin_up(v, 1); |
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[7d4fbcd] | 323 | } |
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| 324 | |
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[b2b0773] | 325 | void owl_viewwin_right(owl_viewwin *v, int n) |
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| 326 | { |
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[7d4fbcd] | 327 | v->rightshift+=n; |
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[5b68c05] | 328 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 329 | } |
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| 330 | |
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[b2b0773] | 331 | void owl_viewwin_left(owl_viewwin *v, int n) |
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| 332 | { |
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[7d4fbcd] | 333 | v->rightshift-=n; |
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| 334 | if (v->rightshift<0) v->rightshift=0; |
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[5b68c05] | 335 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 336 | } |
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| 337 | |
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[b2b0773] | 338 | void owl_viewwin_top(owl_viewwin *v) |
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| 339 | { |
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[7d4fbcd] | 340 | v->topline=0; |
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| 341 | v->rightshift=0; |
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[5b68c05] | 342 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 343 | } |
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| 344 | |
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[b2b0773] | 345 | void owl_viewwin_bottom(owl_viewwin *v) |
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| 346 | { |
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[c447d9c] | 347 | int winlines; |
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[60c1386] | 348 | owl_window_get_position(v->content, &winlines, 0, 0, 0); |
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| 349 | v->topline = v->textlines - winlines; |
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[5b68c05] | 350 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 351 | } |
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| 352 | |
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[6a35938] | 353 | /* This is a bit of a hack, because regexec doesn't have an 'n' |
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| 354 | * version. */ |
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| 355 | static int _re_memcompare(const owl_regex *re, const char *string, int start, int end) |
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| 356 | { |
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| 357 | int ans; |
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| 358 | char *tmp = g_strndup(string + start, end - start); |
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| 359 | ans = owl_regex_compare(re, tmp, NULL, NULL); |
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| 360 | g_free(tmp); |
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| 361 | return !ans; |
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| 362 | } |
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| 363 | |
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[b8742ba] | 364 | /* Scroll in 'direction' to the next line containing 're' in 'v', |
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| 365 | * starting from the current line. Returns 0 if no occurrence is |
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| 366 | * found. |
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| 367 | * |
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[118c919] | 368 | * If consider_current is true then stay on the current line |
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[9c1e61d4] | 369 | * if it matches. |
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[b8742ba] | 370 | */ |
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[118c919] | 371 | int owl_viewwin_search(owl_viewwin *v, const owl_regex *re, int consider_current, int direction) |
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[b8742ba] | 372 | { |
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| 373 | int start, end, offset; |
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[6a35938] | 374 | int lineend, linestart; |
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| 375 | const char *buf, *linestartp; |
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[b8742ba] | 376 | owl_fmtext_line_extents(&v->fmtext, v->topline, &start, &end); |
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| 377 | if (direction == OWL_DIRECTION_DOWNWARDS) { |
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[9c1e61d4] | 378 | offset = owl_fmtext_search(&v->fmtext, re, |
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[118c919] | 379 | consider_current ? start : end); |
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[b8742ba] | 380 | if (offset < 0) |
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| 381 | return 0; |
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| 382 | v->topline = owl_fmtext_line_number(&v->fmtext, offset); |
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| 383 | owl_viewwin_dirty(v); |
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| 384 | return 1; |
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| 385 | } else { |
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[6a35938] | 386 | /* TODO: This is a hack. Really, we should have an owl_fmlines or |
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| 387 | * something containing an array of owl_fmtext split into |
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| 388 | * lines. Also, it cannot handle multi-line regex, if we ever care about |
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| 389 | * them. */ |
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| 390 | buf = owl_fmtext_get_text(&v->fmtext); |
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[118c919] | 391 | lineend = consider_current ? end : start; |
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[6a35938] | 392 | while (lineend > 0) { |
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| 393 | linestartp = memrchr(buf, '\n', lineend - 1); |
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| 394 | linestart = linestartp ? linestartp - buf + 1 : 0; |
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| 395 | if (_re_memcompare(re, buf, linestart, lineend)) { |
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| 396 | v->topline = owl_fmtext_line_number(&v->fmtext, linestart); |
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| 397 | owl_viewwin_dirty(v); |
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| 398 | return 1; |
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| 399 | } |
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| 400 | lineend = linestart; |
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| 401 | } |
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| 402 | return 0; |
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[b8742ba] | 403 | } |
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| 404 | } |
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| 405 | |
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[9eb38bb] | 406 | void owl_viewwin_delete(owl_viewwin *v) |
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[b2b0773] | 407 | { |
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[afbf668] | 408 | if (v->onclose_hook) { |
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| 409 | v->onclose_hook(v, v->onclose_hook_data); |
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[8721756] | 410 | v->onclose_hook = NULL; |
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| 411 | v->onclose_hook_data = NULL; |
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[afbf668] | 412 | } |
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[09ceee3] | 413 | owl_viewwin_set_typwin_inactive(v); |
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[60c1386] | 414 | /* TODO: This is far too tedious. owl_viewwin should own v->window |
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| 415 | * and just unlink it in one go. Signals should also go away for |
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| 416 | * free. */ |
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| 417 | g_signal_handler_disconnect(v->window, v->sig_resize_id); |
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| 418 | g_signal_handler_disconnect(v->content, v->sig_content_redraw_id); |
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| 419 | g_signal_handler_disconnect(v->status, v->sig_status_redraw_id); |
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| 420 | owl_window_unlink(v->content); |
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| 421 | owl_window_unlink(v->status); |
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| 422 | g_object_unref(v->window); |
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| 423 | g_object_unref(v->content); |
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| 424 | g_object_unref(v->status); |
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[7ab0020] | 425 | owl_fmtext_cleanup(&(v->fmtext)); |
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[ddbbcffa] | 426 | g_free(v); |
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[7d4fbcd] | 427 | } |
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