[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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[053f751] | 6 | GObject object; |
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[449af72] | 7 | /* hierarchy information */ |
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| 8 | owl_window *parent; |
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| 9 | owl_window *child; |
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| 10 | owl_window *next, *prev; |
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| 11 | /* flags */ |
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| 12 | int dirty : 1; |
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| 13 | int dirty_subtree : 1; |
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[50031f0] | 14 | int shown : 1; |
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[449af72] | 15 | int is_screen : 1; |
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| 16 | /* window information */ |
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| 17 | WINDOW *win; |
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| 18 | PANEL *pan; |
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| 19 | int nlines, ncols; |
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| 20 | int begin_y, begin_x; |
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| 21 | /* hooks */ |
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| 22 | void (*redraw_cb)(owl_window *, WINDOW *, void *); |
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[5d74b7c] | 23 | void *redraw_cbdata; |
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[449af72] | 24 | void (*redraw_cbdata_destroy)(void *); |
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| 25 | |
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[d106110] | 26 | void (*size_cb)(owl_window *, void *); |
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[5d74b7c] | 27 | void *size_cbdata; |
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[d106110] | 28 | void (*size_cbdata_destroy)(void *); |
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[449af72] | 29 | }; |
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| 30 | |
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[053f751] | 31 | static void owl_window_dispose(GObject *gobject); |
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| 32 | static void owl_window_finalize(GObject *gobject); |
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| 33 | |
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[449af72] | 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_link(owl_window *w, owl_window *parent); |
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| 37 | |
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| 38 | static void _owl_window_create_curses(owl_window *w); |
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| 39 | static void _owl_window_destroy_curses(owl_window *w); |
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| 40 | |
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[46e2e56] | 41 | static void _owl_window_realize(owl_window *w); |
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| 42 | static void _owl_window_unrealize(owl_window *w); |
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[449af72] | 43 | |
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[053f751] | 44 | G_DEFINE_TYPE (OwlWindow, owl_window, G_TYPE_OBJECT) |
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| 45 | |
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| 46 | static void owl_window_class_init (OwlWindowClass *klass) |
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| 47 | { |
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| 48 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
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| 49 | |
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| 50 | object_class->dispose = owl_window_dispose; |
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| 51 | object_class->finalize = owl_window_finalize; |
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| 52 | } |
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| 53 | |
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| 54 | static void owl_window_dispose (GObject *object) |
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| 55 | { |
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| 56 | owl_window *w = OWL_WINDOW (object); |
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| 57 | |
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| 58 | /* Unmap the window */ |
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| 59 | owl_window_hide (w); |
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| 60 | |
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| 61 | /* Unlink and unref all children */ |
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| 62 | while (w->child) { |
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| 63 | owl_window *child = w->child; |
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| 64 | owl_window_unlink (child); |
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| 65 | } |
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| 66 | |
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| 67 | /* Clear all cbs */ |
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| 68 | owl_window_set_redraw_cb (w, 0, 0, 0); |
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| 69 | owl_window_set_size_cb (w, 0, 0, 0); |
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| 70 | |
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| 71 | /* Remove from hierarchy */ |
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| 72 | owl_window_unlink (w); |
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| 73 | |
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| 74 | G_OBJECT_CLASS (owl_window_parent_class)->dispose (object); |
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| 75 | } |
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| 76 | |
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| 77 | static void owl_window_finalize (GObject *object) |
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| 78 | { |
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| 79 | owl_window *w = OWL_WINDOW(object); |
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| 80 | |
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| 81 | if (w->pan) { |
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| 82 | del_panel(w->pan); |
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| 83 | w->pan = NULL; |
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| 84 | } |
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| 85 | |
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| 86 | G_OBJECT_CLASS (owl_window_parent_class)->finalize (object); |
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| 87 | } |
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| 88 | |
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| 89 | static void owl_window_init (owl_window *w) |
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| 90 | { |
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| 91 | } |
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| 92 | |
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[449af72] | 93 | /** singletons **/ |
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| 94 | |
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| 95 | static WINDOW *_dummy_window(void) |
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| 96 | { |
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| 97 | static WINDOW *dummy = NULL; |
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| 98 | if (!dummy) { |
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| 99 | dummy = newwin(1, 1, 0, 0); |
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| 100 | } |
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| 101 | return dummy; |
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| 102 | } |
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| 103 | |
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[d39f68c] | 104 | static void _screen_calculate_size(owl_window *screen, void *user_data) |
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| 105 | { |
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| 106 | owl_global *g = user_data; |
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| 107 | int lines, cols; |
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| 108 | owl_global_get_terminal_size(&lines, &cols); |
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| 109 | if (!g->lines) g->lines = lines; |
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| 110 | if (!g->cols) g->cols = cols; |
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| 111 | owl_window_resize(screen, g->lines, g->cols); |
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| 112 | } |
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| 113 | |
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[449af72] | 114 | owl_window *owl_window_get_screen(void) |
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| 115 | { |
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| 116 | static owl_window *screen = NULL; |
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| 117 | if (!screen) { |
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[50031f0] | 118 | /* The screen is magical. It's 'shown', but the only mean of it going |
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[449af72] | 119 | * invisible is if we're tore down curses (i.e. screen resize) */ |
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| 120 | screen = _owl_window_new(NULL, g.lines, g.cols, 0, 0); |
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| 121 | screen->is_screen = 1; |
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[d39f68c] | 122 | owl_window_set_size_cb(screen, _screen_calculate_size, &g, 0); |
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[402ed3d3] | 123 | owl_window_show(screen); |
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[449af72] | 124 | } |
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| 125 | return screen; |
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| 126 | } |
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| 127 | |
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| 128 | /** Creation and Destruction **/ |
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| 129 | |
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[d106110] | 130 | owl_window *owl_window_new(owl_window *parent) |
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[449af72] | 131 | { |
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| 132 | if (!parent) |
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| 133 | parent = owl_window_get_screen(); |
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[d106110] | 134 | return _owl_window_new(parent, 0, 0, 0, 0); |
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[449af72] | 135 | } |
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| 136 | |
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| 137 | static owl_window *_owl_window_new(owl_window *parent, int nlines, int ncols, int begin_y, int begin_x) |
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| 138 | { |
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| 139 | owl_window *w; |
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| 140 | |
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[053f751] | 141 | w = g_object_new (OWL_TYPE_WINDOW, NULL); |
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| 142 | if (w == NULL) g_error("Failed to create owl_window instance"); |
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[449af72] | 143 | |
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| 144 | w->nlines = nlines; |
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| 145 | w->ncols = ncols; |
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| 146 | w->begin_y = begin_y; |
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| 147 | w->begin_x = begin_x; |
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| 148 | |
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| 149 | _owl_window_link(w, parent); |
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| 150 | if (parent && parent->is_screen) { |
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| 151 | w->pan = new_panel(_dummy_window()); |
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| 152 | set_panel_userptr(w->pan, w); |
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| 153 | } |
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| 154 | |
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| 155 | return w; |
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| 156 | } |
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| 157 | |
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| 158 | /** Callbacks **/ |
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| 159 | |
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| 160 | 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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| 161 | { |
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| 162 | if (w->redraw_cbdata_destroy) { |
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| 163 | w->redraw_cbdata_destroy(w->redraw_cbdata); |
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| 164 | w->redraw_cbdata = 0; |
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| 165 | w->redraw_cbdata_destroy = 0; |
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| 166 | } |
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| 167 | |
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| 168 | w->redraw_cb = cb; |
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| 169 | w->redraw_cbdata = cbdata; |
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| 170 | w->redraw_cbdata_destroy = cbdata_destroy; |
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| 171 | |
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| 172 | /* mark the window as dirty, to take new cb in account */ |
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| 173 | owl_window_dirty(w); |
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| 174 | } |
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| 175 | |
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[d106110] | 176 | 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] | 177 | { |
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[d106110] | 178 | if (w->size_cbdata_destroy) { |
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| 179 | w->size_cbdata_destroy(w->size_cbdata); |
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| 180 | w->size_cbdata = 0; |
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| 181 | w->size_cbdata_destroy = 0; |
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[449af72] | 182 | } |
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| 183 | |
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[d106110] | 184 | w->size_cb = cb; |
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| 185 | w->size_cbdata = cbdata; |
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| 186 | w->size_cbdata_destroy = cbdata_destroy; |
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| 187 | |
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| 188 | owl_window_recompute_position(w); |
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[449af72] | 189 | } |
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| 190 | |
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| 191 | /** Hierarchy **/ |
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| 192 | |
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[3da1f4f] | 193 | void owl_window_unlink(owl_window *w) |
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[449af72] | 194 | { |
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[ec4ccfc] | 195 | /* make sure the window is unmapped first */ |
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[46e2e56] | 196 | _owl_window_unrealize(w); |
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[449af72] | 197 | /* unlink parent/child information */ |
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| 198 | if (w->parent) { |
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| 199 | if (w->prev) |
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| 200 | w->prev->next = w->next; |
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| 201 | if (w->next) |
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| 202 | w->next->prev = w->prev; |
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| 203 | if (w->parent->child == w) |
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| 204 | w->parent->child = w->next; |
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[933aa7d] | 205 | w->parent = NULL; |
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[053f751] | 206 | g_object_unref (w); |
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[449af72] | 207 | } |
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| 208 | } |
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| 209 | |
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| 210 | static void _owl_window_link(owl_window *w, owl_window *parent) |
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| 211 | { |
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| 212 | if (w->parent == parent) |
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| 213 | return; |
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| 214 | |
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[933aa7d] | 215 | owl_window_unlink(w); |
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[449af72] | 216 | if (parent) { |
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[933aa7d] | 217 | w->parent = parent; |
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[449af72] | 218 | w->next = parent->child; |
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| 219 | parent->child = w; |
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[053f751] | 220 | g_object_ref (w); |
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[449af72] | 221 | } |
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| 222 | } |
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| 223 | |
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| 224 | /* mimic g_list_foreach for consistency */ |
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| 225 | void owl_window_children_foreach(owl_window *parent, GFunc func, gpointer user_data) |
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| 226 | { |
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| 227 | owl_window *w; |
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| 228 | for (w = parent->child; |
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| 229 | w != NULL; |
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| 230 | w = w->next) { |
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| 231 | func(w, user_data); |
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| 232 | } |
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| 233 | } |
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| 234 | |
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| 235 | void owl_window_children_foreach_onearg(owl_window *parent, void (*func)(owl_window*)) |
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| 236 | { |
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[053f751] | 237 | owl_window_children_foreach(parent, (GFunc)func, NULL); |
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[449af72] | 238 | } |
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| 239 | |
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[b6cb985] | 240 | owl_window *owl_window_get_parent(owl_window *w) |
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| 241 | { |
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| 242 | return w->parent; |
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| 243 | } |
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| 244 | |
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[449af72] | 245 | /** Internal window management **/ |
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| 246 | |
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| 247 | static void _owl_window_create_curses(owl_window *w) |
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| 248 | { |
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| 249 | if (w->is_screen) { |
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| 250 | resizeterm(w->nlines, w->ncols); |
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[2dfccc7] | 251 | w->win = stdscr; |
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[449af72] | 252 | } else if (w->pan) { |
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| 253 | w->win = newwin(w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 254 | replace_panel(w->pan, w->win); |
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| 255 | } else { |
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[fe49685] | 256 | if (w->parent == NULL || w->parent->win == NULL) |
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| 257 | return; |
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[449af72] | 258 | w->win = derwin(w->parent->win, w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 259 | } |
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| 260 | } |
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| 261 | |
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| 262 | static void _owl_window_destroy_curses(owl_window *w) |
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| 263 | { |
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| 264 | if (w->is_screen) { |
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| 265 | /* don't deallocate the dummy */ |
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| 266 | w->win = NULL; |
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| 267 | } else { |
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| 268 | if (w->pan) { |
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| 269 | /* panels assume their windows always exist, so we put in a fake one */ |
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| 270 | replace_panel(w->pan, _dummy_window()); |
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| 271 | } |
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| 272 | if (w->win) { |
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| 273 | /* and destroy our own window */ |
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| 274 | delwin(w->win); |
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| 275 | w->win = NULL; |
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| 276 | } |
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| 277 | } |
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| 278 | } |
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| 279 | |
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[402ed3d3] | 280 | void owl_window_show(owl_window *w) |
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[449af72] | 281 | { |
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[50031f0] | 282 | w->shown = 1; |
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[46e2e56] | 283 | _owl_window_realize(w); |
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[449af72] | 284 | if (w->pan) |
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| 285 | show_panel(w->pan); |
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[402ed3d3] | 286 | } |
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| 287 | |
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| 288 | void owl_window_show_all(owl_window *w) |
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| 289 | { |
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| 290 | owl_window_show(w); |
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| 291 | owl_window_children_foreach_onearg(w, owl_window_show); |
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[449af72] | 292 | } |
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| 293 | |
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[50031f0] | 294 | void owl_window_hide(owl_window *w) |
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[449af72] | 295 | { |
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| 296 | /* you can't unmap the screen */ |
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| 297 | if (w->is_screen) |
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| 298 | return; |
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[50031f0] | 299 | w->shown = 0; |
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[449af72] | 300 | if (w->pan) |
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| 301 | hide_panel(w->pan); |
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[46e2e56] | 302 | _owl_window_unrealize(w); |
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[449af72] | 303 | } |
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| 304 | |
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[50031f0] | 305 | int owl_window_is_shown(owl_window *w) |
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[449af72] | 306 | { |
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[50031f0] | 307 | return w->shown; |
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[449af72] | 308 | } |
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| 309 | |
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[ce7c6c3] | 310 | int owl_window_is_realized(owl_window *w) |
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[449af72] | 311 | { |
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| 312 | return w->win != NULL; |
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| 313 | } |
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| 314 | |
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| 315 | int owl_window_is_toplevel(owl_window *w) |
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| 316 | { |
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| 317 | return w->pan != NULL; |
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| 318 | } |
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| 319 | |
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[46e2e56] | 320 | static void _owl_window_realize(owl_window *w) |
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[449af72] | 321 | { |
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| 322 | /* check if we can create a window */ |
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| 323 | if ((w->parent && w->parent->win == NULL) |
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[50031f0] | 324 | || !w->shown |
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[449af72] | 325 | || w->win != NULL) |
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| 326 | return; |
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| 327 | _owl_window_create_curses(w); |
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[fe49685] | 328 | if (w->win == NULL) |
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| 329 | return; |
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[449af72] | 330 | /* schedule a repaint */ |
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| 331 | owl_window_dirty(w); |
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[fe49685] | 332 | /* map the children */ |
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| 333 | owl_window_children_foreach_onearg(w, _owl_window_realize); |
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[449af72] | 334 | } |
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| 335 | |
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[46e2e56] | 336 | static void _owl_window_unrealize(owl_window *w) |
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[449af72] | 337 | { |
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| 338 | if (w->win == NULL) |
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| 339 | return; |
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| 340 | /* unmap all the children */ |
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[46e2e56] | 341 | owl_window_children_foreach_onearg(w, _owl_window_unrealize); |
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[449af72] | 342 | _owl_window_destroy_curses(w); |
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| 343 | /* subwins leave a mess in the parent; dirty it */ |
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| 344 | if (w->parent) |
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| 345 | owl_window_dirty(w->parent); |
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| 346 | } |
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| 347 | |
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| 348 | /** Painting and book-keeping **/ |
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| 349 | |
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| 350 | void owl_window_dirty(owl_window *w) |
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| 351 | { |
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| 352 | /* don't put the screen on this list; pointless */ |
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| 353 | if (w->is_screen) |
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| 354 | return; |
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[7cbef8c] | 355 | if (!owl_window_is_realized(w)) |
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| 356 | return; |
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[449af72] | 357 | if (!w->dirty) { |
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| 358 | w->dirty = 1; |
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| 359 | while (w && !w->dirty_subtree) { |
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| 360 | w->dirty_subtree = 1; |
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| 361 | w = w->parent; |
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| 362 | } |
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| 363 | owl_global_set_needrefresh(&g); |
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| 364 | } |
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| 365 | } |
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| 366 | |
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| 367 | void owl_window_dirty_children(owl_window *w) |
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| 368 | { |
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| 369 | owl_window_children_foreach_onearg(w, owl_window_dirty); |
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| 370 | } |
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| 371 | |
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| 372 | static void _owl_window_redraw(owl_window *w) |
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| 373 | { |
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| 374 | if (!w->dirty) return; |
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| 375 | if (w->win && w->redraw_cb) { |
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| 376 | w->redraw_cb(w, w->win, w->redraw_cbdata); |
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[6eefb5e] | 377 | wsyncup(w->win); |
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[449af72] | 378 | } |
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| 379 | w->dirty = 0; |
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| 380 | } |
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| 381 | |
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| 382 | static void _owl_window_redraw_subtree(owl_window *w) |
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| 383 | { |
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| 384 | if (!w->dirty_subtree) |
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| 385 | return; |
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| 386 | _owl_window_redraw(w); |
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| 387 | owl_window_children_foreach_onearg(w, _owl_window_redraw_subtree); |
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| 388 | } |
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| 389 | |
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| 390 | /* |
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| 391 | Redraw all the windows with scheduled redraws. |
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| 392 | NOTE: This function shouldn't be called outside the event loop |
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| 393 | */ |
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| 394 | void owl_window_redraw_scheduled(void) |
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| 395 | { |
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| 396 | _owl_window_redraw_subtree(owl_window_get_screen()); |
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| 397 | } |
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| 398 | |
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[7c8811c] | 399 | void owl_window_erase_cb(owl_window *w, WINDOW *win, void *user_data) |
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| 400 | { |
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| 401 | werase(win); |
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| 402 | owl_window_dirty_children(w); |
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| 403 | } |
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| 404 | |
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[449af72] | 405 | /** Window position **/ |
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| 406 | |
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| 407 | void owl_window_get_position(owl_window *w, int *nlines, int *ncols, int *begin_y, int *begin_x) |
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| 408 | { |
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| 409 | if (nlines) *nlines = w->nlines; |
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| 410 | if (ncols) *ncols = w->ncols; |
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| 411 | if (begin_y) *begin_y = w->begin_y; |
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| 412 | if (begin_x) *begin_x = w->begin_x; |
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| 413 | } |
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| 414 | |
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[b0cbde4] | 415 | void owl_window_move(owl_window *w, int begin_y, int begin_x) |
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| 416 | { |
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[6b93305] | 417 | if (w->is_screen) return; /* can't move the screen */ |
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| 418 | if (w->begin_y == begin_y && w->begin_x == begin_x) return; |
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[b0cbde4] | 419 | |
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| 420 | w->begin_y = begin_y; |
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| 421 | w->begin_x = begin_x; |
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[50031f0] | 422 | if (w->shown) { |
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| 423 | /* Window is shown, we must try to have a window at the end */ |
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[b0cbde4] | 424 | if (w->win) { |
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| 425 | /* We actually do have a window; let's move it */ |
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| 426 | if (w->pan) { |
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| 427 | if (move_panel(w->pan, begin_y, begin_x) == OK) |
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| 428 | return; |
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| 429 | } else { |
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| 430 | if (mvderwin(w->win, begin_y, begin_x) == OK) { |
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| 431 | /* now both we and the parent are dirty */ |
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| 432 | owl_window_dirty(w->parent); |
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| 433 | owl_window_dirty(w); |
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| 434 | return; |
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| 435 | } |
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| 436 | } |
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| 437 | } |
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| 438 | /* We don't have a window or failed to move it. Fine. Brute force. */ |
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[46e2e56] | 439 | _owl_window_unrealize(w); |
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| 440 | _owl_window_realize(w); |
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[b0cbde4] | 441 | } |
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| 442 | } |
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| 443 | |
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[449af72] | 444 | void owl_window_set_position(owl_window *w, int nlines, int ncols, int begin_y, int begin_x) |
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| 445 | { |
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| 446 | /* can't move the screen */ |
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| 447 | if (w->is_screen) { |
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| 448 | begin_y = begin_x = 0; |
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| 449 | } |
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| 450 | |
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| 451 | if (w->nlines == nlines && w->ncols == ncols) { |
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| 452 | /* moving is easier */ |
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| 453 | owl_window_move(w, begin_y, begin_x); |
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| 454 | return; |
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| 455 | } |
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| 456 | |
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| 457 | w->begin_y = begin_y; |
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| 458 | w->begin_x = begin_x; |
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| 459 | w->nlines = nlines; |
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| 460 | w->ncols = ncols; |
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[50031f0] | 461 | /* window is shown, we must try to have a window at the end */ |
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| 462 | if (w->shown) { |
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[46e2e56] | 463 | /* resizing in ncurses is hard: give up do a unrealize/realize */ |
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| 464 | _owl_window_unrealize(w); |
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[449af72] | 465 | } |
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[d106110] | 466 | /* recalculate children sizes BEFORE remapping, so that everything can resize */ |
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| 467 | owl_window_children_foreach_onearg(w, owl_window_recompute_position); |
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[50031f0] | 468 | if (w->shown) { |
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[46e2e56] | 469 | _owl_window_realize(w); |
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[449af72] | 470 | } |
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| 471 | } |
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| 472 | |
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| 473 | void owl_window_resize(owl_window *w, int nlines, int ncols) |
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| 474 | { |
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| 475 | owl_window_set_position(w, nlines, ncols, w->begin_y, w->begin_x); |
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| 476 | } |
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| 477 | |
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[d106110] | 478 | void owl_window_recompute_position(owl_window *w) |
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| 479 | { |
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| 480 | if (w->size_cb) { |
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| 481 | /* TODO: size_cb probably wants to actually take four int*s */ |
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| 482 | w->size_cb(w, w->size_cbdata); |
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| 483 | } |
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| 484 | } |
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| 485 | |
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| 486 | |
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[449af72] | 487 | /** Stacking order **/ |
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| 488 | |
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| 489 | void owl_window_top(owl_window *w) { |
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| 490 | if (!w->pan) { |
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[7c8811c] | 491 | owl_function_debugmsg("Warning: owl_window_top only makes sense on top-level window"); |
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[449af72] | 492 | return; |
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| 493 | } |
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| 494 | top_panel(w->pan); |
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| 495 | } |
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| 496 | |
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| 497 | owl_window *owl_window_above(owl_window *w) { |
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| 498 | PANEL *pan; |
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| 499 | |
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| 500 | if (!w->pan) { |
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| 501 | owl_function_debugmsg("Warning: owl_window_above only makes sense on top-level window"); |
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| 502 | return NULL; |
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| 503 | } |
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| 504 | pan = panel_above(w->pan); |
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| 505 | /* cast because panel_userptr pointlessly returns a const void * */ |
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| 506 | return pan ? (void*) panel_userptr(pan) : NULL; |
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| 507 | } |
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| 508 | |
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| 509 | owl_window *owl_window_below(owl_window *w) { |
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| 510 | PANEL *pan; |
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| 511 | |
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| 512 | if (!w->pan) { |
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| 513 | owl_function_debugmsg("Warning: owl_window_above only makes sense on top-level window"); |
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| 514 | return NULL; |
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| 515 | } |
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| 516 | pan = panel_below(w->pan); |
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| 517 | /* cast because panel_userptr pointlessly returns a const void * */ |
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| 518 | return pan ? (void*) panel_userptr(pan) : NULL; |
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| 519 | } |
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