[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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[60c1386] | 7 | static void owl_viewwin_redraw_content(owl_window *w, WINDOW *curswin, void *user_data); |
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| 8 | static void owl_viewwin_redraw_status(owl_window *w, WINDOW *curswin, void *user_data); |
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| 9 | static void owl_viewwin_layout(owl_viewwin *v); |
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[61c1f19] | 10 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w); |
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[0b9e607] | 11 | |
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[9eb38bb] | 12 | /* Create a viewwin. 'win' is an already initialized owl_window that |
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| 13 | * will be used by the viewwin |
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[b2b0773] | 14 | */ |
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[9eb38bb] | 15 | owl_viewwin *owl_viewwin_new_text(owl_window *win, const char *text) |
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[b2b0773] | 16 | { |
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[9eb38bb] | 17 | owl_viewwin *v = owl_malloc(sizeof(owl_viewwin)); |
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| 18 | memset(v, 0, sizeof(*v)); |
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[7d4fbcd] | 19 | owl_fmtext_init_null(&(v->fmtext)); |
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| 20 | if (text) { |
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| 21 | owl_fmtext_append_normal(&(v->fmtext), text); |
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[4083c49] | 22 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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[7d4fbcd] | 23 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 24 | } |
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| 25 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 26 | } |
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| 27 | v->topline=0; |
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| 28 | v->rightshift=0; |
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[afbf668] | 29 | v->onclose_hook = NULL; |
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[68f63a2] | 30 | |
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| 31 | owl_viewwin_set_window(v, win); |
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[9eb38bb] | 32 | return v; |
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[afbf668] | 33 | } |
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| 34 | |
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[9eb38bb] | 35 | /* Create a viewwin. 'win' is an already initialized owl_window that |
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| 36 | * will be used by the viewwin |
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[b2b0773] | 37 | */ |
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[9eb38bb] | 38 | owl_viewwin *owl_viewwin_new_fmtext(owl_window *win, const owl_fmtext *fmtext) |
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[b2b0773] | 39 | { |
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[dd6af02] | 40 | char *text; |
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[9eb38bb] | 41 | owl_viewwin *v = owl_malloc(sizeof(owl_viewwin)); |
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| 42 | memset(v, 0, sizeof(*v)); |
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[dd6af02] | 43 | |
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[7d4fbcd] | 44 | owl_fmtext_copy(&(v->fmtext), fmtext); |
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[dd6af02] | 45 | text = owl_fmtext_print_plain(fmtext); |
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| 46 | if (text[0] != '\0' && text[strlen(text) - 1] != '\n') { |
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| 47 | owl_fmtext_append_normal(&(v->fmtext), "\n"); |
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| 48 | } |
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[3e55268] | 49 | owl_free(text); |
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[7d4fbcd] | 50 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 51 | v->topline=0; |
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| 52 | v->rightshift=0; |
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[68f63a2] | 53 | |
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| 54 | owl_viewwin_set_window(v, win); |
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[9eb38bb] | 55 | return v; |
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[7d4fbcd] | 56 | } |
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| 57 | |
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[61c1f19] | 58 | static void owl_viewwin_set_window(owl_viewwin *v, owl_window *w) |
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[b2b0773] | 59 | { |
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[60c1386] | 60 | v->window = g_object_ref(w); |
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| 61 | v->content = owl_window_new(v->window); |
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| 62 | v->status = owl_window_new(v->window); |
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[09ceee3] | 63 | v->cmdwin = NULL; |
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[60c1386] | 64 | |
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| 65 | v->sig_content_redraw_id = |
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| 66 | g_signal_connect(v->content, "redraw", G_CALLBACK(owl_viewwin_redraw_content), v); |
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| 67 | v->sig_status_redraw_id = |
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| 68 | g_signal_connect(v->status, "redraw", G_CALLBACK(owl_viewwin_redraw_status), v); |
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| 69 | v->sig_resize_id = |
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| 70 | g_signal_connect_swapped(v->window, "resized", G_CALLBACK(owl_viewwin_layout), v); |
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| 71 | owl_viewwin_layout(v); |
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| 72 | |
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| 73 | owl_window_show(v->content); |
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| 74 | owl_window_show(v->status); |
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[7d4fbcd] | 75 | } |
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| 76 | |
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[afbf668] | 77 | 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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| 78 | v->onclose_hook = onclose_hook; |
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| 79 | v->onclose_hook_data = onclose_hook_data; |
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| 80 | } |
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| 81 | |
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[60c1386] | 82 | static void owl_viewwin_layout(owl_viewwin *v) |
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| 83 | { |
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| 84 | int lines, cols; |
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| 85 | owl_window_get_position(v->window, &lines, &cols, NULL, NULL); |
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| 86 | owl_window_set_position(v->content, lines - BOTTOM_OFFSET, cols, 0, 0); |
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[09ceee3] | 87 | /* Only one of these will be visible at a time: */ |
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[60c1386] | 88 | owl_window_set_position(v->status, BOTTOM_OFFSET, cols, lines - BOTTOM_OFFSET, 0); |
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[09ceee3] | 89 | if (v->cmdwin) |
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| 90 | owl_window_set_position(v->cmdwin, BOTTOM_OFFSET, cols, lines - BOTTOM_OFFSET, 0); |
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[60c1386] | 91 | } |
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| 92 | |
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[b2b0773] | 93 | /* regenerate text on the curses window. */ |
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[60c1386] | 94 | static void owl_viewwin_redraw_content(owl_window *w, WINDOW *curswin, void *user_data) |
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[b2b0773] | 95 | { |
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[7d4fbcd] | 96 | owl_fmtext fm1, fm2; |
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[68f63a2] | 97 | owl_viewwin *v = user_data; |
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[c447d9c] | 98 | int winlines, wincols; |
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[9116936] | 99 | int y; |
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[c447d9c] | 100 | |
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| 101 | owl_window_get_position(w, &winlines, &wincols, 0, 0); |
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[60c1386] | 102 | |
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[68f63a2] | 103 | werase(curswin); |
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| 104 | wmove(curswin, 0, 0); |
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[7d4fbcd] | 105 | |
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[af2ca19] | 106 | owl_fmtext_init_null(&fm1); |
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| 107 | owl_fmtext_init_null(&fm2); |
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[60c1386] | 108 | |
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| 109 | owl_fmtext_truncate_lines(&(v->fmtext), v->topline, winlines, &fm1); |
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[c447d9c] | 110 | owl_fmtext_truncate_cols(&fm1, v->rightshift, wincols-1+v->rightshift, &fm2); |
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[7d4fbcd] | 111 | |
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[449c682] | 112 | owl_fmtext_curs_waddstr(&fm2, curswin); |
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[7d4fbcd] | 113 | |
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[9116936] | 114 | /* Fill remaining lines with tildes. */ |
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| 115 | y = v->textlines - v->topline; |
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| 116 | wmove(curswin, y, 0); |
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[60c1386] | 117 | for (; y < winlines; y++) { |
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[9116936] | 118 | waddstr(curswin, EMPTY_INDICATOR); |
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| 119 | waddstr(curswin, "\n"); |
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| 120 | } |
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| 121 | |
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[60c1386] | 122 | owl_fmtext_cleanup(&fm1); |
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| 123 | owl_fmtext_cleanup(&fm2); |
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| 124 | } |
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| 125 | |
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| 126 | static void owl_viewwin_redraw_status(owl_window *w, WINDOW *curswin, void *user_data) |
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| 127 | { |
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| 128 | owl_viewwin *v = user_data; |
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| 129 | int winlines, wincols; |
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| 130 | |
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| 131 | owl_window_get_position(v->content, &winlines, &wincols, 0, 0); |
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| 132 | |
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| 133 | werase(curswin); |
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| 134 | wmove(curswin, 0, 0); |
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[68f63a2] | 135 | wattrset(curswin, A_REVERSE); |
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[60c1386] | 136 | if (v->textlines - v->topline > winlines) { |
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[68f63a2] | 137 | waddstr(curswin, "--More-- (Space to see more, 'q' to quit)"); |
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[7d4fbcd] | 138 | } else { |
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[68f63a2] | 139 | waddstr(curswin, "--End-- (Press 'q' to quit)"); |
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[7d4fbcd] | 140 | } |
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[68f63a2] | 141 | wattroff(curswin, A_REVERSE); |
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[7d4fbcd] | 142 | } |
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| 143 | |
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[b6cf72f] | 144 | char *owl_viewwin_command_search(owl_viewwin *v, int argc, const char *const *argv, const char *buff) |
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| 145 | { |
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| 146 | int direction, mode; |
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| 147 | const char *buffstart; |
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| 148 | |
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| 149 | direction=OWL_DIRECTION_DOWNWARDS; |
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| 150 | buffstart=skiptokens(buff, 1); |
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| 151 | if (argc>1 && !strcmp(argv[1], "-r")) { |
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| 152 | direction=OWL_DIRECTION_UPWARDS; |
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| 153 | buffstart=skiptokens(buff, 2); |
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| 154 | } |
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| 155 | |
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| 156 | if (argc==1 || (argc==2 && !strcmp(argv[1], "-r"))) { |
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| 157 | mode = OWL_SEARCH_CONTINUE; |
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| 158 | } else { |
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| 159 | owl_function_set_search(buffstart); |
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| 160 | mode = OWL_SEARCH_MATCH_CURRENT; |
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| 161 | } |
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| 162 | |
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| 163 | if (!owl_viewwin_search(v, owl_global_get_search_re(&g), mode, direction)) |
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| 164 | owl_function_error("No more matches"); |
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| 165 | return NULL; |
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| 166 | } |
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| 167 | |
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[09ceee3] | 168 | char *owl_viewwin_start_command(owl_viewwin *v, int argc, const char *const *argv, const char *buff) |
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| 169 | { |
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| 170 | owl_editwin *tw; |
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| 171 | owl_context *ctx; |
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| 172 | |
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| 173 | buff = skiptokens(buff, 1); |
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| 174 | |
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| 175 | tw = owl_viewwin_set_typwin_active(v, owl_global_get_cmd_history(&g)); |
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| 176 | owl_editwin_set_locktext(tw, ":"); |
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| 177 | |
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| 178 | owl_editwin_insert_string(tw, buff); |
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| 179 | |
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| 180 | ctx = owl_editcontext_new(OWL_CTX_EDITLINE, tw, "editline"); |
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| 181 | ctx->deactivate_cb = owl_viewwin_deactivate_editcontext; |
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| 182 | ctx->cbdata = v; |
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| 183 | owl_global_push_context_obj(&g, ctx); |
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| 184 | owl_editwin_set_callback(tw, owl_callback_command); |
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| 185 | |
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| 186 | return NULL; |
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| 187 | } |
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| 188 | |
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| 189 | void owl_viewwin_deactivate_editcontext(owl_context *ctx) { |
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| 190 | owl_viewwin *v = ctx->cbdata; |
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| 191 | owl_viewwin_set_typwin_inactive(v); |
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| 192 | } |
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| 193 | |
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| 194 | owl_editwin *owl_viewwin_set_typwin_active(owl_viewwin *v, owl_history *hist) { |
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| 195 | int lines, cols; |
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| 196 | if (v->cmdwin || v->cmdline) |
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| 197 | return NULL; |
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| 198 | /* Create the command line. */ |
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| 199 | v->cmdwin = owl_window_new(v->window); |
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| 200 | owl_viewwin_layout(v); |
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| 201 | owl_window_get_position(v->cmdwin, &lines, &cols, NULL, NULL); |
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| 202 | v->cmdline = owl_editwin_new(v->cmdwin, lines, cols, OWL_EDITWIN_STYLE_ONELINE, hist); |
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| 203 | /* Swap out the bottom window. */ |
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| 204 | owl_window_hide(v->status); |
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| 205 | owl_window_show(v->cmdwin); |
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| 206 | return v->cmdline; |
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| 207 | } |
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| 208 | |
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| 209 | void owl_viewwin_set_typwin_inactive(owl_viewwin *v) { |
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| 210 | if (v->cmdwin) { |
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| 211 | /* Swap out the bottom window. */ |
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| 212 | owl_window_hide(v->cmdwin); |
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| 213 | owl_window_show(v->status); |
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| 214 | /* Destroy the window itself. */ |
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| 215 | owl_window_unlink(v->cmdwin); |
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| 216 | g_object_unref(v->cmdwin); |
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| 217 | v->cmdwin = NULL; |
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| 218 | } |
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| 219 | if (v->cmdline) { |
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| 220 | owl_editwin_unref(v->cmdline); |
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| 221 | v->cmdline = NULL; |
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| 222 | } |
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| 223 | } |
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| 224 | |
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[2640b63] | 225 | void owl_viewwin_append_text(owl_viewwin *v, const char *text) { |
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| 226 | owl_fmtext_append_normal(&(v->fmtext), text); |
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| 227 | v->textlines=owl_fmtext_num_lines(&(v->fmtext)); |
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| 228 | owl_viewwin_dirty(v); |
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| 229 | } |
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| 230 | |
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| 231 | /* Schedule a redraw of 'v'. Exported for hooking into the search |
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| 232 | string; when we have some way of listening for changes, this can be |
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| 233 | removed. */ |
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| 234 | void owl_viewwin_dirty(owl_viewwin *v) |
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| 235 | { |
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[60c1386] | 236 | owl_window_dirty(v->content); |
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| 237 | owl_window_dirty(v->status); |
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[2640b63] | 238 | } |
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| 239 | |
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[d574d61] | 240 | void owl_viewwin_down(owl_viewwin *v, int amount) { |
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[c447d9c] | 241 | int winlines; |
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[60c1386] | 242 | owl_window_get_position(v->content, &winlines, 0, 0, 0); |
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[fa23002] | 243 | /* Don't scroll past the bottom. */ |
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[60c1386] | 244 | amount = MIN(amount, v->textlines - (v->topline + winlines)); |
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[fa23002] | 245 | /* But if we're already past the bottom, don't back up either. */ |
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| 246 | if (amount > 0) { |
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| 247 | v->topline += amount; |
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| 248 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 249 | } |
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| 250 | } |
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| 251 | |
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[d574d61] | 252 | void owl_viewwin_up(owl_viewwin *v, int amount) |
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| 253 | { |
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| 254 | v->topline -= amount; |
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| 255 | if (v->topline<0) v->topline=0; |
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| 256 | owl_viewwin_dirty(v); |
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| 257 | } |
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| 258 | |
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| 259 | void owl_viewwin_pagedown(owl_viewwin *v) |
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[b2b0773] | 260 | { |
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[c447d9c] | 261 | int winlines; |
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[60c1386] | 262 | owl_window_get_position(v->content, &winlines, 0, 0, 0); |
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| 263 | owl_viewwin_down(v, winlines); |
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[d574d61] | 264 | } |
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| 265 | |
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| 266 | void owl_viewwin_linedown(owl_viewwin *v) |
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| 267 | { |
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| 268 | owl_viewwin_down(v, 1); |
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[7d4fbcd] | 269 | } |
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| 270 | |
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[b2b0773] | 271 | void owl_viewwin_pageup(owl_viewwin *v) |
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| 272 | { |
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[c447d9c] | 273 | int winlines; |
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[60c1386] | 274 | owl_window_get_position(v->content, &winlines, 0, 0, 0); |
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| 275 | owl_viewwin_up(v, winlines); |
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[7d4fbcd] | 276 | } |
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| 277 | |
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[b2b0773] | 278 | void owl_viewwin_lineup(owl_viewwin *v) |
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| 279 | { |
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[d574d61] | 280 | owl_viewwin_up(v, 1); |
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[7d4fbcd] | 281 | } |
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| 282 | |
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[b2b0773] | 283 | void owl_viewwin_right(owl_viewwin *v, int n) |
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| 284 | { |
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[7d4fbcd] | 285 | v->rightshift+=n; |
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[5b68c05] | 286 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 287 | } |
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| 288 | |
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[b2b0773] | 289 | void owl_viewwin_left(owl_viewwin *v, int n) |
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| 290 | { |
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[7d4fbcd] | 291 | v->rightshift-=n; |
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| 292 | if (v->rightshift<0) v->rightshift=0; |
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[5b68c05] | 293 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 294 | } |
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| 295 | |
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[b2b0773] | 296 | void owl_viewwin_top(owl_viewwin *v) |
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| 297 | { |
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[7d4fbcd] | 298 | v->topline=0; |
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| 299 | v->rightshift=0; |
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[5b68c05] | 300 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 301 | } |
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| 302 | |
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[b2b0773] | 303 | void owl_viewwin_bottom(owl_viewwin *v) |
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| 304 | { |
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[c447d9c] | 305 | int winlines; |
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[60c1386] | 306 | owl_window_get_position(v->content, &winlines, 0, 0, 0); |
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| 307 | v->topline = v->textlines - winlines; |
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[5b68c05] | 308 | owl_viewwin_dirty(v); |
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[7d4fbcd] | 309 | } |
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| 310 | |
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[6a35938] | 311 | /* This is a bit of a hack, because regexec doesn't have an 'n' |
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| 312 | * version. */ |
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| 313 | static int _re_memcompare(const owl_regex *re, const char *string, int start, int end) |
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| 314 | { |
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| 315 | int ans; |
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| 316 | char *tmp = g_strndup(string + start, end - start); |
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| 317 | ans = owl_regex_compare(re, tmp, NULL, NULL); |
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| 318 | g_free(tmp); |
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| 319 | return !ans; |
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| 320 | } |
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| 321 | |
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[b8742ba] | 322 | /* Scroll in 'direction' to the next line containing 're' in 'v', |
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| 323 | * starting from the current line. Returns 0 if no occurrence is |
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| 324 | * found. |
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| 325 | * |
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[9c1e61d4] | 326 | * If mode is OWL_SEARCH_MATCH_CURRENT then stay on the current line |
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| 327 | * if it matches. |
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[b8742ba] | 328 | */ |
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| 329 | int owl_viewwin_search(owl_viewwin *v, const owl_regex *re, int mode, int direction) |
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| 330 | { |
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| 331 | int start, end, offset; |
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[6a35938] | 332 | int lineend, linestart; |
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| 333 | const char *buf, *linestartp; |
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[b8742ba] | 334 | owl_fmtext_line_extents(&v->fmtext, v->topline, &start, &end); |
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| 335 | if (direction == OWL_DIRECTION_DOWNWARDS) { |
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[9c1e61d4] | 336 | offset = owl_fmtext_search(&v->fmtext, re, |
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| 337 | (mode == OWL_SEARCH_CONTINUE) ? end : start); |
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[b8742ba] | 338 | if (offset < 0) |
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| 339 | return 0; |
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| 340 | v->topline = owl_fmtext_line_number(&v->fmtext, offset); |
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| 341 | owl_viewwin_dirty(v); |
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| 342 | return 1; |
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| 343 | } else { |
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[6a35938] | 344 | /* TODO: This is a hack. Really, we should have an owl_fmlines or |
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| 345 | * something containing an array of owl_fmtext split into |
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| 346 | * lines. Also, it cannot handle multi-line regex, if we ever care about |
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| 347 | * them. */ |
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| 348 | buf = owl_fmtext_get_text(&v->fmtext); |
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[9c1e61d4] | 349 | lineend = (mode == OWL_SEARCH_CONTINUE) ? start : end; |
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[6a35938] | 350 | while (lineend > 0) { |
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| 351 | linestartp = memrchr(buf, '\n', lineend - 1); |
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| 352 | linestart = linestartp ? linestartp - buf + 1 : 0; |
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| 353 | if (_re_memcompare(re, buf, linestart, lineend)) { |
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| 354 | v->topline = owl_fmtext_line_number(&v->fmtext, linestart); |
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| 355 | owl_viewwin_dirty(v); |
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| 356 | return 1; |
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| 357 | } |
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| 358 | lineend = linestart; |
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| 359 | } |
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| 360 | return 0; |
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[b8742ba] | 361 | } |
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| 362 | } |
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| 363 | |
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[9eb38bb] | 364 | void owl_viewwin_delete(owl_viewwin *v) |
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[b2b0773] | 365 | { |
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[afbf668] | 366 | if (v->onclose_hook) { |
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| 367 | v->onclose_hook(v, v->onclose_hook_data); |
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[8721756] | 368 | v->onclose_hook = NULL; |
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| 369 | v->onclose_hook_data = NULL; |
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[afbf668] | 370 | } |
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[09ceee3] | 371 | owl_viewwin_set_typwin_inactive(v); |
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[60c1386] | 372 | /* TODO: This is far too tedious. owl_viewwin should own v->window |
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| 373 | * and just unlink it in one go. Signals should also go away for |
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| 374 | * free. */ |
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| 375 | g_signal_handler_disconnect(v->window, v->sig_resize_id); |
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| 376 | g_signal_handler_disconnect(v->content, v->sig_content_redraw_id); |
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| 377 | g_signal_handler_disconnect(v->status, v->sig_status_redraw_id); |
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| 378 | owl_window_unlink(v->content); |
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| 379 | owl_window_unlink(v->status); |
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| 380 | g_object_unref(v->window); |
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| 381 | g_object_unref(v->content); |
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| 382 | g_object_unref(v->status); |
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[7ab0020] | 383 | owl_fmtext_cleanup(&(v->fmtext)); |
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[9eb38bb] | 384 | owl_free(v); |
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[7d4fbcd] | 385 | } |
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