[449af72] | 1 | #include "owl.h" |
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| 2 | |
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| 3 | #include <assert.h> |
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| 4 | |
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| 5 | struct _owl_window { /*noproto*/ |
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| 6 | /* hierarchy information */ |
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| 7 | owl_window *parent; |
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| 8 | owl_window *child; |
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| 9 | owl_window *next, *prev; |
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| 10 | /* flags */ |
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| 11 | int dirty : 1; |
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| 12 | int dirty_subtree : 1; |
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| 13 | int mapped : 1; |
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| 14 | int is_screen : 1; |
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| 15 | /* window information */ |
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| 16 | WINDOW *win; |
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| 17 | PANEL *pan; |
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| 18 | int nlines, ncols; |
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| 19 | int begin_y, begin_x; |
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| 20 | /* hooks */ |
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| 21 | void (*redraw_cb)(owl_window *, WINDOW *, void *); |
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[5d74b7c] | 22 | void *redraw_cbdata; |
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[449af72] | 23 | void (*redraw_cbdata_destroy)(void *); |
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| 24 | |
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[d106110] | 25 | void (*size_cb)(owl_window *, void *); |
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[5d74b7c] | 26 | void *size_cbdata; |
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[d106110] | 27 | void (*size_cbdata_destroy)(void *); |
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[449af72] | 28 | |
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| 29 | void (*destroy_cb)(owl_window *, void *); |
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[5d74b7c] | 30 | void *destroy_cbdata; |
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[449af72] | 31 | void (*destroy_cbdata_destroy)(void *); |
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| 32 | }; |
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| 33 | |
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| 34 | static owl_window *_owl_window_new(owl_window *parent, int nlines, int ncols, int begin_y, int begin_x); |
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| 35 | |
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| 36 | static void _owl_window_unlink(owl_window *w); |
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| 37 | static void _owl_window_link(owl_window *w, owl_window *parent); |
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| 38 | |
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| 39 | static void _owl_window_create_curses(owl_window *w); |
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| 40 | static void _owl_window_destroy_curses(owl_window *w); |
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| 41 | |
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| 42 | static void _owl_window_map_internal(owl_window *w); |
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| 43 | static void _owl_window_unmap_internal(owl_window *w); |
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| 44 | |
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| 45 | /** singletons **/ |
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| 46 | |
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| 47 | static WINDOW *_dummy_window(void) |
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| 48 | { |
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| 49 | static WINDOW *dummy = NULL; |
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| 50 | if (!dummy) { |
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| 51 | dummy = newwin(1, 1, 0, 0); |
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| 52 | } |
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| 53 | return dummy; |
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| 54 | } |
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| 55 | |
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[d39f68c] | 56 | static void _screen_calculate_size(owl_window *screen, void *user_data) |
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| 57 | { |
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| 58 | owl_global *g = user_data; |
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| 59 | int lines, cols; |
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| 60 | owl_global_get_terminal_size(&lines, &cols); |
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| 61 | if (!g->lines) g->lines = lines; |
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| 62 | if (!g->cols) g->cols = cols; |
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| 63 | owl_window_resize(screen, g->lines, g->cols); |
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| 64 | } |
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| 65 | |
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[449af72] | 66 | owl_window *owl_window_get_screen(void) |
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| 67 | { |
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| 68 | static owl_window *screen = NULL; |
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| 69 | if (!screen) { |
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| 70 | /* The screen is magical. It's 'mapped', but the only mean of it going |
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| 71 | * invisible is if we're tore down curses (i.e. screen resize) */ |
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| 72 | screen = _owl_window_new(NULL, g.lines, g.cols, 0, 0); |
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| 73 | screen->is_screen = 1; |
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[d39f68c] | 74 | owl_window_set_size_cb(screen, _screen_calculate_size, &g, 0); |
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[449af72] | 75 | owl_window_map(screen, 0); |
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| 76 | } |
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| 77 | return screen; |
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| 78 | } |
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| 79 | |
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| 80 | /** Creation and Destruction **/ |
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| 81 | |
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[d106110] | 82 | owl_window *owl_window_new(owl_window *parent) |
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[449af72] | 83 | { |
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| 84 | if (!parent) |
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| 85 | parent = owl_window_get_screen(); |
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[d106110] | 86 | return _owl_window_new(parent, 0, 0, 0, 0); |
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[449af72] | 87 | } |
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| 88 | |
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| 89 | static owl_window *_owl_window_new(owl_window *parent, int nlines, int ncols, int begin_y, int begin_x) |
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| 90 | { |
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| 91 | owl_window *w; |
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| 92 | |
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| 93 | w = owl_malloc(sizeof(owl_window)); |
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| 94 | memset(w, 0, sizeof(*w)); |
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| 95 | |
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| 96 | w->nlines = nlines; |
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| 97 | w->ncols = ncols; |
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| 98 | w->begin_y = begin_y; |
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| 99 | w->begin_x = begin_x; |
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| 100 | |
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| 101 | _owl_window_link(w, parent); |
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| 102 | if (parent && parent->is_screen) { |
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| 103 | w->pan = new_panel(_dummy_window()); |
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| 104 | set_panel_userptr(w->pan, w); |
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| 105 | } |
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| 106 | |
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| 107 | return w; |
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| 108 | } |
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| 109 | |
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| 110 | void owl_window_delete(owl_window *w) |
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| 111 | { |
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| 112 | /* destroy all children */ |
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| 113 | owl_window_children_foreach_onearg(w, owl_window_delete); |
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| 114 | |
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| 115 | /* notify everyone of your imminent demise */ |
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| 116 | if (w->destroy_cb) |
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| 117 | w->destroy_cb(w, w->destroy_cbdata); |
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| 118 | |
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| 119 | /* clear all cbs */ |
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| 120 | owl_window_set_redraw_cb(w, 0, 0, 0); |
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[d106110] | 121 | owl_window_set_size_cb(w, 0, 0, 0); |
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[449af72] | 122 | owl_window_set_destroy_cb(w, 0, 0, 0); |
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| 123 | |
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| 124 | /* destroy curses structures */ |
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| 125 | owl_window_unmap(w); |
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| 126 | if (w->pan) { |
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| 127 | del_panel(w->pan); |
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| 128 | } |
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| 129 | |
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| 130 | /* remove from hierarchy */ |
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| 131 | _owl_window_unlink(w); |
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| 132 | owl_free(w); |
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| 133 | } |
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| 134 | |
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| 135 | /** Callbacks **/ |
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| 136 | |
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| 137 | void owl_window_set_redraw_cb(owl_window *w, void (*cb)(owl_window*, WINDOW*, void*), void *cbdata, void (*cbdata_destroy)(void*)) |
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| 138 | { |
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| 139 | if (w->redraw_cbdata_destroy) { |
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| 140 | w->redraw_cbdata_destroy(w->redraw_cbdata); |
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| 141 | w->redraw_cbdata = 0; |
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| 142 | w->redraw_cbdata_destroy = 0; |
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| 143 | } |
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| 144 | |
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| 145 | w->redraw_cb = cb; |
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| 146 | w->redraw_cbdata = cbdata; |
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| 147 | w->redraw_cbdata_destroy = cbdata_destroy; |
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| 148 | |
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| 149 | /* mark the window as dirty, to take new cb in account */ |
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| 150 | owl_window_dirty(w); |
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| 151 | } |
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| 152 | |
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[d106110] | 153 | void owl_window_set_size_cb(owl_window *w, void (*cb)(owl_window*, void*), void *cbdata, void (*cbdata_destroy)(void*)) |
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[449af72] | 154 | { |
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[d106110] | 155 | if (w->size_cbdata_destroy) { |
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| 156 | w->size_cbdata_destroy(w->size_cbdata); |
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| 157 | w->size_cbdata = 0; |
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| 158 | w->size_cbdata_destroy = 0; |
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[449af72] | 159 | } |
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| 160 | |
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[d106110] | 161 | w->size_cb = cb; |
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| 162 | w->size_cbdata = cbdata; |
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| 163 | w->size_cbdata_destroy = cbdata_destroy; |
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| 164 | |
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| 165 | owl_window_recompute_position(w); |
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[449af72] | 166 | } |
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| 167 | |
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| 168 | void owl_window_set_destroy_cb(owl_window *w, void (*cb)(owl_window*, void*), void *cbdata, void (*cbdata_destroy)(void*)) |
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| 169 | { |
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| 170 | if (w->destroy_cbdata_destroy) { |
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| 171 | w->destroy_cbdata_destroy(w->destroy_cbdata); |
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| 172 | w->destroy_cbdata = 0; |
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| 173 | w->destroy_cbdata_destroy = 0; |
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| 174 | } |
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| 175 | |
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| 176 | w->destroy_cb = cb; |
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| 177 | w->destroy_cbdata = cbdata; |
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| 178 | w->destroy_cbdata_destroy = cbdata_destroy; |
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| 179 | } |
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| 180 | |
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| 181 | /** Hierarchy **/ |
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| 182 | |
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| 183 | static void _owl_window_unlink(owl_window *w) |
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| 184 | { |
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[ec4ccfc] | 185 | /* make sure the window is unmapped first */ |
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| 186 | _owl_window_unmap_internal(w); |
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[449af72] | 187 | /* unlink parent/child information */ |
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| 188 | if (w->parent) { |
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| 189 | if (w->prev) |
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| 190 | w->prev->next = w->next; |
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| 191 | if (w->next) |
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| 192 | w->next->prev = w->prev; |
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| 193 | if (w->parent->child == w) |
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| 194 | w->parent->child = w->next; |
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| 195 | } |
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| 196 | w->parent = NULL; |
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| 197 | } |
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| 198 | |
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| 199 | static void _owl_window_link(owl_window *w, owl_window *parent) |
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| 200 | { |
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| 201 | if (w->parent == parent) |
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| 202 | return; |
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| 203 | if (w->parent) |
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| 204 | _owl_window_unlink(w); |
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| 205 | |
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| 206 | w->parent = parent; |
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| 207 | if (parent) { |
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| 208 | w->next = parent->child; |
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| 209 | parent->child = w; |
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| 210 | } |
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| 211 | } |
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| 212 | |
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| 213 | /* mimic g_list_foreach for consistency */ |
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| 214 | void owl_window_children_foreach(owl_window *parent, GFunc func, gpointer user_data) |
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| 215 | { |
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| 216 | owl_window *w; |
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| 217 | for (w = parent->child; |
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| 218 | w != NULL; |
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| 219 | w = w->next) { |
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| 220 | func(w, user_data); |
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| 221 | } |
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| 222 | } |
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| 223 | |
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| 224 | void owl_window_children_foreach_onearg(owl_window *parent, void (*func)(owl_window*)) |
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| 225 | { |
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| 226 | owl_window *w; |
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| 227 | for (w = parent->child; |
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| 228 | w != NULL; |
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| 229 | w = w->next) { |
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| 230 | func(w); |
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| 231 | } |
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| 232 | } |
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| 233 | |
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[b6cb985] | 234 | owl_window *owl_window_get_parent(owl_window *w) |
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| 235 | { |
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| 236 | return w->parent; |
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| 237 | } |
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| 238 | |
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[449af72] | 239 | /** Internal window management **/ |
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| 240 | |
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| 241 | static void _owl_window_create_curses(owl_window *w) |
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| 242 | { |
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| 243 | if (w->is_screen) { |
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| 244 | resizeterm(w->nlines, w->ncols); |
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[2dfccc7] | 245 | w->win = stdscr; |
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[449af72] | 246 | } else if (w->pan) { |
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| 247 | w->win = newwin(w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 248 | replace_panel(w->pan, w->win); |
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| 249 | } else { |
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| 250 | w->win = derwin(w->parent->win, w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 251 | } |
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| 252 | } |
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| 253 | |
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| 254 | static void _owl_window_destroy_curses(owl_window *w) |
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| 255 | { |
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| 256 | if (w->is_screen) { |
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| 257 | /* don't deallocate the dummy */ |
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| 258 | w->win = NULL; |
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| 259 | } else { |
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| 260 | if (w->pan) { |
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| 261 | /* panels assume their windows always exist, so we put in a fake one */ |
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| 262 | replace_panel(w->pan, _dummy_window()); |
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| 263 | } |
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| 264 | if (w->win) { |
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| 265 | /* and destroy our own window */ |
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| 266 | delwin(w->win); |
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| 267 | w->win = NULL; |
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| 268 | } |
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| 269 | } |
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| 270 | } |
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| 271 | |
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| 272 | static void _map_recurse_curry(owl_window *w) |
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| 273 | { |
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| 274 | owl_window_map(w, 1); |
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| 275 | } |
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| 276 | |
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| 277 | void owl_window_map(owl_window *w, int recurse) |
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| 278 | { |
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| 279 | w->mapped = 1; |
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| 280 | _owl_window_map_internal(w); |
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| 281 | if (w->pan) |
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| 282 | show_panel(w->pan); |
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| 283 | if (recurse) |
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| 284 | owl_window_children_foreach_onearg(w, _map_recurse_curry); |
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| 285 | } |
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| 286 | |
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| 287 | void owl_window_unmap(owl_window *w) |
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| 288 | { |
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| 289 | /* you can't unmap the screen */ |
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| 290 | if (w->is_screen) |
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| 291 | return; |
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| 292 | w->mapped = 0; |
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| 293 | if (w->pan) |
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| 294 | hide_panel(w->pan); |
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| 295 | _owl_window_unmap_internal(w); |
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| 296 | } |
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| 297 | |
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| 298 | int owl_window_is_mapped(owl_window *w) |
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| 299 | { |
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| 300 | return w->mapped; |
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| 301 | } |
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| 302 | |
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[ce7c6c3] | 303 | int owl_window_is_realized(owl_window *w) |
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[449af72] | 304 | { |
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| 305 | return w->win != NULL; |
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| 306 | } |
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| 307 | |
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| 308 | int owl_window_is_toplevel(owl_window *w) |
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| 309 | { |
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| 310 | return w->pan != NULL; |
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| 311 | } |
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| 312 | |
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| 313 | static void _owl_window_map_internal(owl_window *w) |
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| 314 | { |
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| 315 | /* check if we can create a window */ |
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| 316 | if ((w->parent && w->parent->win == NULL) |
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| 317 | || !w->mapped |
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| 318 | || w->win != NULL) |
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| 319 | return; |
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| 320 | _owl_window_create_curses(w); |
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| 321 | /* schedule a repaint */ |
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| 322 | owl_window_dirty(w); |
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| 323 | /* map the children, unless we failed */ |
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| 324 | if (w->win) |
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| 325 | owl_window_children_foreach_onearg(w, _owl_window_map_internal); |
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| 326 | } |
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| 327 | |
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| 328 | static void _owl_window_unmap_internal(owl_window *w) |
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| 329 | { |
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| 330 | if (w->win == NULL) |
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| 331 | return; |
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| 332 | /* unmap all the children */ |
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| 333 | owl_window_children_foreach_onearg(w, _owl_window_unmap_internal); |
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| 334 | _owl_window_destroy_curses(w); |
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| 335 | /* subwins leave a mess in the parent; dirty it */ |
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| 336 | if (w->parent) |
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| 337 | owl_window_dirty(w->parent); |
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| 338 | } |
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| 339 | |
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| 340 | /** Painting and book-keeping **/ |
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| 341 | |
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| 342 | void owl_window_dirty(owl_window *w) |
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| 343 | { |
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| 344 | /* don't put the screen on this list; pointless */ |
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| 345 | if (w->is_screen) |
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| 346 | return; |
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[7cbef8c] | 347 | if (!owl_window_is_realized(w)) |
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| 348 | return; |
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[449af72] | 349 | if (!w->dirty) { |
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| 350 | w->dirty = 1; |
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| 351 | while (w && !w->dirty_subtree) { |
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| 352 | w->dirty_subtree = 1; |
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| 353 | w = w->parent; |
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| 354 | } |
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| 355 | owl_global_set_needrefresh(&g); |
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| 356 | } |
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| 357 | } |
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| 358 | |
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| 359 | void owl_window_dirty_children(owl_window *w) |
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| 360 | { |
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| 361 | owl_window_children_foreach_onearg(w, owl_window_dirty); |
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| 362 | } |
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| 363 | |
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| 364 | static void _owl_window_redraw(owl_window *w) |
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| 365 | { |
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| 366 | if (!w->dirty) return; |
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| 367 | if (w->win && w->redraw_cb) { |
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| 368 | w->redraw_cb(w, w->win, w->redraw_cbdata); |
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[6eefb5e] | 369 | wsyncup(w->win); |
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[449af72] | 370 | } |
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| 371 | w->dirty = 0; |
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| 372 | } |
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| 373 | |
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| 374 | static void _owl_window_redraw_subtree(owl_window *w) |
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| 375 | { |
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| 376 | if (!w->dirty_subtree) |
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| 377 | return; |
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| 378 | _owl_window_redraw(w); |
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| 379 | owl_window_children_foreach_onearg(w, _owl_window_redraw_subtree); |
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| 380 | } |
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| 381 | |
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| 382 | /* |
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| 383 | Redraw all the windows with scheduled redraws. |
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| 384 | NOTE: This function shouldn't be called outside the event loop |
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| 385 | */ |
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| 386 | void owl_window_redraw_scheduled(void) |
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| 387 | { |
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| 388 | _owl_window_redraw_subtree(owl_window_get_screen()); |
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| 389 | } |
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| 390 | |
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[7c8811c] | 391 | void owl_window_erase_cb(owl_window *w, WINDOW *win, void *user_data) |
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| 392 | { |
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| 393 | werase(win); |
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| 394 | owl_window_dirty_children(w); |
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| 395 | } |
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| 396 | |
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[449af72] | 397 | /** Window position **/ |
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| 398 | |
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| 399 | void owl_window_get_position(owl_window *w, int *nlines, int *ncols, int *begin_y, int *begin_x) |
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| 400 | { |
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| 401 | if (nlines) *nlines = w->nlines; |
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| 402 | if (ncols) *ncols = w->ncols; |
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| 403 | if (begin_y) *begin_y = w->begin_y; |
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| 404 | if (begin_x) *begin_x = w->begin_x; |
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| 405 | } |
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| 406 | |
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[b0cbde4] | 407 | void owl_window_move(owl_window *w, int begin_y, int begin_x) |
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| 408 | { |
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[6b93305] | 409 | if (w->is_screen) return; /* can't move the screen */ |
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| 410 | if (w->begin_y == begin_y && w->begin_x == begin_x) return; |
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[b0cbde4] | 411 | |
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| 412 | w->begin_y = begin_y; |
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| 413 | w->begin_x = begin_x; |
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| 414 | if (w->mapped) { |
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| 415 | /* Window is mapped, we must try to have a window at the end */ |
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| 416 | if (w->win) { |
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| 417 | /* We actually do have a window; let's move it */ |
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| 418 | if (w->pan) { |
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| 419 | if (move_panel(w->pan, begin_y, begin_x) == OK) |
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| 420 | return; |
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| 421 | } else { |
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| 422 | if (mvderwin(w->win, begin_y, begin_x) == OK) { |
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| 423 | /* now both we and the parent are dirty */ |
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| 424 | owl_window_dirty(w->parent); |
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| 425 | owl_window_dirty(w); |
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| 426 | return; |
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| 427 | } |
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| 428 | } |
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| 429 | } |
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| 430 | /* We don't have a window or failed to move it. Fine. Brute force. */ |
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| 431 | _owl_window_unmap_internal(w); |
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| 432 | _owl_window_map_internal(w); |
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| 433 | } |
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| 434 | } |
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| 435 | |
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[449af72] | 436 | void owl_window_set_position(owl_window *w, int nlines, int ncols, int begin_y, int begin_x) |
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| 437 | { |
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| 438 | /* can't move the screen */ |
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| 439 | if (w->is_screen) { |
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| 440 | begin_y = begin_x = 0; |
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| 441 | } |
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| 442 | |
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| 443 | if (w->nlines == nlines && w->ncols == ncols) { |
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| 444 | /* moving is easier */ |
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| 445 | owl_window_move(w, begin_y, begin_x); |
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| 446 | return; |
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| 447 | } |
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| 448 | |
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| 449 | w->begin_y = begin_y; |
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| 450 | w->begin_x = begin_x; |
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| 451 | w->nlines = nlines; |
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| 452 | w->ncols = ncols; |
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| 453 | /* window is mapped, we must try to have a window at the end */ |
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| 454 | if (w->mapped) { |
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| 455 | /* resizing in ncurses is hard: give up do a unmap/map */ |
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| 456 | _owl_window_unmap_internal(w); |
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| 457 | } |
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[d106110] | 458 | /* recalculate children sizes BEFORE remapping, so that everything can resize */ |
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| 459 | owl_window_children_foreach_onearg(w, owl_window_recompute_position); |
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[449af72] | 460 | if (w->mapped) { |
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| 461 | _owl_window_map_internal(w); |
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| 462 | } |
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| 463 | } |
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| 464 | |
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| 465 | void owl_window_resize(owl_window *w, int nlines, int ncols) |
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| 466 | { |
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| 467 | owl_window_set_position(w, nlines, ncols, w->begin_y, w->begin_x); |
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| 468 | } |
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| 469 | |
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[d106110] | 470 | void owl_window_recompute_position(owl_window *w) |
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| 471 | { |
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| 472 | if (w->size_cb) { |
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| 473 | /* TODO: size_cb probably wants to actually take four int*s */ |
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| 474 | w->size_cb(w, w->size_cbdata); |
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| 475 | } |
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| 476 | } |
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| 477 | |
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| 478 | |
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[449af72] | 479 | /** Stacking order **/ |
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| 480 | |
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| 481 | void owl_window_top(owl_window *w) { |
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| 482 | if (!w->pan) { |
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[7c8811c] | 483 | owl_function_debugmsg("Warning: owl_window_top only makes sense on top-level window"); |
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[449af72] | 484 | return; |
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| 485 | } |
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| 486 | top_panel(w->pan); |
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| 487 | } |
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| 488 | |
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| 489 | owl_window *owl_window_above(owl_window *w) { |
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| 490 | PANEL *pan; |
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| 491 | |
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| 492 | if (!w->pan) { |
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| 493 | owl_function_debugmsg("Warning: owl_window_above only makes sense on top-level window"); |
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| 494 | return NULL; |
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| 495 | } |
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| 496 | pan = panel_above(w->pan); |
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| 497 | /* cast because panel_userptr pointlessly returns a const void * */ |
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| 498 | return pan ? (void*) panel_userptr(pan) : NULL; |
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| 499 | } |
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| 500 | |
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| 501 | owl_window *owl_window_below(owl_window *w) { |
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| 502 | PANEL *pan; |
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| 503 | |
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| 504 | if (!w->pan) { |
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| 505 | owl_function_debugmsg("Warning: owl_window_above only makes sense on top-level window"); |
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| 506 | return NULL; |
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| 507 | } |
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| 508 | pan = panel_below(w->pan); |
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| 509 | /* cast because panel_userptr pointlessly returns a const void * */ |
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| 510 | return pan ? (void*) panel_userptr(pan) : NULL; |
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| 511 | } |
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