[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 | }; |
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| 22 | |
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[7a6e6c7] | 23 | enum { |
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| 24 | REDRAW, |
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| 25 | RESIZED, |
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| 26 | LAST_SIGNAL |
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| 27 | }; |
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| 28 | |
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| 29 | static guint window_signals[LAST_SIGNAL] = { 0 }; |
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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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[7a6e6c7] | 44 | static void _owl_window_redraw_cleanup(owl_window *w, WINDOW *win); |
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| 45 | |
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[84a4aca] | 46 | static owl_window *cursor_owner; |
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| 47 | |
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[053f751] | 48 | G_DEFINE_TYPE (OwlWindow, owl_window, G_TYPE_OBJECT) |
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| 49 | |
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| 50 | static void owl_window_class_init (OwlWindowClass *klass) |
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| 51 | { |
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[7a6e6c7] | 52 | GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
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| 53 | |
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| 54 | /* Set up the vtabl */ |
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| 55 | gobject_class->dispose = owl_window_dispose; |
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| 56 | gobject_class->finalize = owl_window_finalize; |
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| 57 | |
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| 58 | klass->redraw = _owl_window_redraw_cleanup; |
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| 59 | klass->resized = NULL; |
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| 60 | |
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| 61 | /* Create the signals, remember IDs */ |
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| 62 | window_signals[REDRAW] = |
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| 63 | g_signal_new("redraw", |
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| 64 | G_TYPE_FROM_CLASS(gobject_class), |
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| 65 | G_SIGNAL_RUN_CLEANUP, |
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| 66 | G_STRUCT_OFFSET(OwlWindowClass, redraw), |
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| 67 | NULL, NULL, |
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| 68 | g_cclosure_marshal_VOID__POINTER, |
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| 69 | G_TYPE_NONE, |
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| 70 | 1, |
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| 71 | G_TYPE_POINTER, NULL); |
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| 72 | |
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| 73 | /* TODO: maybe type should be VOID__INT_INT_INT_INT; will need to generate a |
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| 74 | * marshaller */ |
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| 75 | window_signals[RESIZED] = |
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| 76 | g_signal_new("resized", |
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| 77 | G_TYPE_FROM_CLASS(gobject_class), |
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| 78 | G_SIGNAL_RUN_FIRST, |
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| 79 | G_STRUCT_OFFSET(OwlWindowClass, resized), |
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| 80 | NULL, NULL, |
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| 81 | g_cclosure_marshal_VOID__VOID, |
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| 82 | G_TYPE_NONE, |
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| 83 | 0, |
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| 84 | NULL); |
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[053f751] | 85 | } |
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| 86 | |
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| 87 | static void owl_window_dispose (GObject *object) |
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| 88 | { |
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| 89 | owl_window *w = OWL_WINDOW (object); |
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| 90 | |
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| 91 | /* Unmap the window */ |
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| 92 | owl_window_hide (w); |
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| 93 | |
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| 94 | /* Unlink and unref all children */ |
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| 95 | while (w->child) { |
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| 96 | owl_window *child = w->child; |
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| 97 | owl_window_unlink (child); |
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| 98 | } |
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| 99 | |
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| 100 | /* Remove from hierarchy */ |
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| 101 | owl_window_unlink (w); |
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| 102 | |
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| 103 | G_OBJECT_CLASS (owl_window_parent_class)->dispose (object); |
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| 104 | } |
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| 105 | |
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| 106 | static void owl_window_finalize (GObject *object) |
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| 107 | { |
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| 108 | owl_window *w = OWL_WINDOW(object); |
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| 109 | |
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| 110 | if (w->pan) { |
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| 111 | del_panel(w->pan); |
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| 112 | w->pan = NULL; |
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| 113 | } |
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| 114 | |
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| 115 | G_OBJECT_CLASS (owl_window_parent_class)->finalize (object); |
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| 116 | } |
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| 117 | |
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| 118 | static void owl_window_init (owl_window *w) |
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| 119 | { |
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| 120 | } |
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| 121 | |
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[449af72] | 122 | /** singletons **/ |
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| 123 | |
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| 124 | static WINDOW *_dummy_window(void) |
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| 125 | { |
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| 126 | static WINDOW *dummy = NULL; |
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| 127 | if (!dummy) { |
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| 128 | dummy = newwin(1, 1, 0, 0); |
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| 129 | } |
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| 130 | return dummy; |
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| 131 | } |
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| 132 | |
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| 133 | owl_window *owl_window_get_screen(void) |
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| 134 | { |
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| 135 | static owl_window *screen = NULL; |
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| 136 | if (!screen) { |
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[50031f0] | 137 | /* The screen is magical. It's 'shown', but the only mean of it going |
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[449af72] | 138 | * invisible is if we're tore down curses (i.e. screen resize) */ |
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| 139 | screen = _owl_window_new(NULL, g.lines, g.cols, 0, 0); |
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| 140 | screen->is_screen = 1; |
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[402ed3d3] | 141 | owl_window_show(screen); |
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[449af72] | 142 | } |
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| 143 | return screen; |
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| 144 | } |
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| 145 | |
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| 146 | /** Creation and Destruction **/ |
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| 147 | |
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[d106110] | 148 | owl_window *owl_window_new(owl_window *parent) |
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[449af72] | 149 | { |
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| 150 | if (!parent) |
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| 151 | parent = owl_window_get_screen(); |
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[d106110] | 152 | return _owl_window_new(parent, 0, 0, 0, 0); |
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[449af72] | 153 | } |
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| 154 | |
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| 155 | static owl_window *_owl_window_new(owl_window *parent, int nlines, int ncols, int begin_y, int begin_x) |
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| 156 | { |
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| 157 | owl_window *w; |
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| 158 | |
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[053f751] | 159 | w = g_object_new (OWL_TYPE_WINDOW, NULL); |
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| 160 | if (w == NULL) g_error("Failed to create owl_window instance"); |
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[449af72] | 161 | |
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| 162 | w->nlines = nlines; |
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| 163 | w->ncols = ncols; |
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| 164 | w->begin_y = begin_y; |
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| 165 | w->begin_x = begin_x; |
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| 166 | |
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| 167 | _owl_window_link(w, parent); |
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| 168 | if (parent && parent->is_screen) { |
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| 169 | w->pan = new_panel(_dummy_window()); |
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| 170 | set_panel_userptr(w->pan, w); |
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| 171 | } |
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| 172 | |
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| 173 | return w; |
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| 174 | } |
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| 175 | |
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| 176 | /** Hierarchy **/ |
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| 177 | |
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[3da1f4f] | 178 | void owl_window_unlink(owl_window *w) |
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[449af72] | 179 | { |
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[ec4ccfc] | 180 | /* make sure the window is unmapped first */ |
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[46e2e56] | 181 | _owl_window_unrealize(w); |
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[449af72] | 182 | /* unlink parent/child information */ |
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| 183 | if (w->parent) { |
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| 184 | if (w->prev) |
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| 185 | w->prev->next = w->next; |
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| 186 | if (w->next) |
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| 187 | w->next->prev = w->prev; |
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| 188 | if (w->parent->child == w) |
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| 189 | w->parent->child = w->next; |
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[933aa7d] | 190 | w->parent = NULL; |
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[053f751] | 191 | g_object_unref (w); |
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[449af72] | 192 | } |
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| 193 | } |
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| 194 | |
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| 195 | static void _owl_window_link(owl_window *w, owl_window *parent) |
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| 196 | { |
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| 197 | if (w->parent == parent) |
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| 198 | return; |
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| 199 | |
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[933aa7d] | 200 | owl_window_unlink(w); |
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[449af72] | 201 | if (parent) { |
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[933aa7d] | 202 | w->parent = parent; |
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[449af72] | 203 | w->next = parent->child; |
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| 204 | parent->child = w; |
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[053f751] | 205 | g_object_ref (w); |
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[449af72] | 206 | } |
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| 207 | } |
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| 208 | |
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| 209 | /* mimic g_list_foreach for consistency */ |
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| 210 | void owl_window_children_foreach(owl_window *parent, GFunc func, gpointer user_data) |
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| 211 | { |
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| 212 | owl_window *w; |
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| 213 | for (w = parent->child; |
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| 214 | w != NULL; |
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| 215 | w = w->next) { |
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| 216 | func(w, user_data); |
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| 217 | } |
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| 218 | } |
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| 219 | |
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[b6cb985] | 220 | owl_window *owl_window_get_parent(owl_window *w) |
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| 221 | { |
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| 222 | return w->parent; |
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| 223 | } |
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| 224 | |
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[449af72] | 225 | /** Internal window management **/ |
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| 226 | |
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| 227 | static void _owl_window_create_curses(owl_window *w) |
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| 228 | { |
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| 229 | if (w->is_screen) { |
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| 230 | resizeterm(w->nlines, w->ncols); |
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[2dfccc7] | 231 | w->win = stdscr; |
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[449af72] | 232 | } else if (w->pan) { |
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| 233 | w->win = newwin(w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 234 | replace_panel(w->pan, w->win); |
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| 235 | } else { |
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[fe49685] | 236 | if (w->parent == NULL || w->parent->win == NULL) |
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| 237 | return; |
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[449af72] | 238 | w->win = derwin(w->parent->win, w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 239 | } |
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| 240 | } |
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| 241 | |
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| 242 | static void _owl_window_destroy_curses(owl_window *w) |
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| 243 | { |
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| 244 | if (w->is_screen) { |
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| 245 | /* don't deallocate the dummy */ |
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| 246 | w->win = NULL; |
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| 247 | } else { |
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| 248 | if (w->pan) { |
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| 249 | /* panels assume their windows always exist, so we put in a fake one */ |
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| 250 | replace_panel(w->pan, _dummy_window()); |
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| 251 | } |
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| 252 | if (w->win) { |
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| 253 | /* and destroy our own window */ |
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| 254 | delwin(w->win); |
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| 255 | w->win = NULL; |
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| 256 | } |
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| 257 | } |
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| 258 | } |
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| 259 | |
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[402ed3d3] | 260 | void owl_window_show(owl_window *w) |
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[449af72] | 261 | { |
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[50031f0] | 262 | w->shown = 1; |
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[46e2e56] | 263 | _owl_window_realize(w); |
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[449af72] | 264 | if (w->pan) |
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| 265 | show_panel(w->pan); |
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[402ed3d3] | 266 | } |
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| 267 | |
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| 268 | void owl_window_show_all(owl_window *w) |
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| 269 | { |
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| 270 | owl_window_show(w); |
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[7a70e26] | 271 | owl_window_children_foreach(w, (GFunc)owl_window_show, 0); |
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[449af72] | 272 | } |
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| 273 | |
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[50031f0] | 274 | void owl_window_hide(owl_window *w) |
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[449af72] | 275 | { |
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| 276 | /* you can't unmap the screen */ |
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| 277 | if (w->is_screen) |
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| 278 | return; |
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[50031f0] | 279 | w->shown = 0; |
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[449af72] | 280 | if (w->pan) |
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| 281 | hide_panel(w->pan); |
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[46e2e56] | 282 | _owl_window_unrealize(w); |
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[449af72] | 283 | } |
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| 284 | |
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[50031f0] | 285 | int owl_window_is_shown(owl_window *w) |
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[449af72] | 286 | { |
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[50031f0] | 287 | return w->shown; |
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[449af72] | 288 | } |
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| 289 | |
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[ce7c6c3] | 290 | int owl_window_is_realized(owl_window *w) |
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[449af72] | 291 | { |
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| 292 | return w->win != NULL; |
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| 293 | } |
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| 294 | |
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| 295 | int owl_window_is_toplevel(owl_window *w) |
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| 296 | { |
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| 297 | return w->pan != NULL; |
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| 298 | } |
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| 299 | |
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[46e2e56] | 300 | static void _owl_window_realize(owl_window *w) |
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[449af72] | 301 | { |
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| 302 | /* check if we can create a window */ |
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| 303 | if ((w->parent && w->parent->win == NULL) |
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[50031f0] | 304 | || !w->shown |
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[449af72] | 305 | || w->win != NULL) |
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| 306 | return; |
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| 307 | _owl_window_create_curses(w); |
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[fe49685] | 308 | if (w->win == NULL) |
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| 309 | return; |
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[449af72] | 310 | /* schedule a repaint */ |
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| 311 | owl_window_dirty(w); |
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[fe49685] | 312 | /* map the children */ |
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[7a70e26] | 313 | owl_window_children_foreach(w, (GFunc)_owl_window_realize, 0); |
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[449af72] | 314 | } |
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| 315 | |
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[46e2e56] | 316 | static void _owl_window_unrealize(owl_window *w) |
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[449af72] | 317 | { |
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| 318 | if (w->win == NULL) |
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| 319 | return; |
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| 320 | /* unmap all the children */ |
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[7a70e26] | 321 | owl_window_children_foreach(w, (GFunc)_owl_window_unrealize, 0); |
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[449af72] | 322 | _owl_window_destroy_curses(w); |
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[cb5a9f3] | 323 | w->dirty = w->dirty_subtree = 0; |
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[449af72] | 324 | /* subwins leave a mess in the parent; dirty it */ |
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| 325 | if (w->parent) |
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| 326 | owl_window_dirty(w->parent); |
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| 327 | } |
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| 328 | |
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| 329 | /** Painting and book-keeping **/ |
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| 330 | |
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[84a4aca] | 331 | void owl_window_set_cursor(owl_window *w) |
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| 332 | { |
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| 333 | cursor_owner = w; |
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| 334 | g_object_add_weak_pointer(G_OBJECT(w), (gpointer*) &cursor_owner); |
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[a5a9572] | 335 | owl_global_set_needrefresh(&g); |
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[84a4aca] | 336 | } |
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| 337 | |
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[449af72] | 338 | void owl_window_dirty(owl_window *w) |
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| 339 | { |
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| 340 | /* don't put the screen on this list; pointless */ |
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| 341 | if (w->is_screen) |
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| 342 | return; |
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[7cbef8c] | 343 | if (!owl_window_is_realized(w)) |
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| 344 | return; |
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[449af72] | 345 | if (!w->dirty) { |
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| 346 | w->dirty = 1; |
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| 347 | while (w && !w->dirty_subtree) { |
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| 348 | w->dirty_subtree = 1; |
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| 349 | w = w->parent; |
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| 350 | } |
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| 351 | owl_global_set_needrefresh(&g); |
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| 352 | } |
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| 353 | } |
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| 354 | |
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| 355 | void owl_window_dirty_children(owl_window *w) |
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| 356 | { |
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[7a70e26] | 357 | owl_window_children_foreach(w, (GFunc)owl_window_dirty, 0); |
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[449af72] | 358 | } |
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| 359 | |
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| 360 | static void _owl_window_redraw(owl_window *w) |
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| 361 | { |
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| 362 | if (!w->dirty) return; |
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[7a6e6c7] | 363 | if (w->win) { |
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| 364 | g_signal_emit(w, window_signals[REDRAW], 0, w->win); |
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[449af72] | 365 | } |
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| 366 | w->dirty = 0; |
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| 367 | } |
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| 368 | |
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| 369 | static void _owl_window_redraw_subtree(owl_window *w) |
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| 370 | { |
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| 371 | if (!w->dirty_subtree) |
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| 372 | return; |
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| 373 | _owl_window_redraw(w); |
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[7a70e26] | 374 | owl_window_children_foreach(w, (GFunc)_owl_window_redraw_subtree, 0); |
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[449af72] | 375 | } |
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| 376 | |
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| 377 | /* |
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| 378 | Redraw all the windows with scheduled redraws. |
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| 379 | NOTE: This function shouldn't be called outside the event loop |
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| 380 | */ |
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| 381 | void owl_window_redraw_scheduled(void) |
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| 382 | { |
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| 383 | _owl_window_redraw_subtree(owl_window_get_screen()); |
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[a57f87a] | 384 | update_panels(); |
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[84a4aca] | 385 | if (cursor_owner && cursor_owner->win) |
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| 386 | wnoutrefresh(cursor_owner->win); |
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[449af72] | 387 | } |
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| 388 | |
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[7a6e6c7] | 389 | static void _owl_window_redraw_cleanup(owl_window *w, WINDOW *win) |
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| 390 | { |
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| 391 | wsyncup(win); |
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| 392 | } |
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| 393 | |
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[7c8811c] | 394 | void owl_window_erase_cb(owl_window *w, WINDOW *win, void *user_data) |
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| 395 | { |
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| 396 | werase(win); |
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| 397 | owl_window_dirty_children(w); |
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| 398 | } |
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| 399 | |
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[449af72] | 400 | /** Window position **/ |
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| 401 | |
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| 402 | void owl_window_get_position(owl_window *w, int *nlines, int *ncols, int *begin_y, int *begin_x) |
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| 403 | { |
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| 404 | if (nlines) *nlines = w->nlines; |
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| 405 | if (ncols) *ncols = w->ncols; |
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| 406 | if (begin_y) *begin_y = w->begin_y; |
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| 407 | if (begin_x) *begin_x = w->begin_x; |
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| 408 | } |
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| 409 | |
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[b0cbde4] | 410 | void owl_window_move(owl_window *w, int begin_y, int begin_x) |
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| 411 | { |
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[6b93305] | 412 | if (w->is_screen) return; /* can't move the screen */ |
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| 413 | if (w->begin_y == begin_y && w->begin_x == begin_x) return; |
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[b0cbde4] | 414 | |
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| 415 | w->begin_y = begin_y; |
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| 416 | w->begin_x = begin_x; |
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[50031f0] | 417 | if (w->shown) { |
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| 418 | /* Window is shown, we must try to have a window at the end */ |
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[b0cbde4] | 419 | if (w->win) { |
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| 420 | /* We actually do have a window; let's move it */ |
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| 421 | if (w->pan) { |
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| 422 | if (move_panel(w->pan, begin_y, begin_x) == OK) |
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| 423 | return; |
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| 424 | } else { |
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| 425 | if (mvderwin(w->win, begin_y, begin_x) == OK) { |
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| 426 | /* now both we and the parent are dirty */ |
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| 427 | owl_window_dirty(w->parent); |
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| 428 | owl_window_dirty(w); |
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| 429 | return; |
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| 430 | } |
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| 431 | } |
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| 432 | } |
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| 433 | /* We don't have a window or failed to move it. Fine. Brute force. */ |
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[46e2e56] | 434 | _owl_window_unrealize(w); |
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| 435 | _owl_window_realize(w); |
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[b0cbde4] | 436 | } |
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| 437 | } |
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| 438 | |
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[449af72] | 439 | void owl_window_set_position(owl_window *w, int nlines, int ncols, int begin_y, int begin_x) |
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| 440 | { |
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| 441 | /* can't move the screen */ |
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| 442 | if (w->is_screen) { |
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| 443 | begin_y = begin_x = 0; |
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| 444 | } |
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| 445 | |
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| 446 | if (w->nlines == nlines && w->ncols == ncols) { |
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| 447 | /* moving is easier */ |
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| 448 | owl_window_move(w, begin_y, begin_x); |
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| 449 | return; |
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| 450 | } |
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| 451 | |
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[50031f0] | 452 | /* window is shown, we must try to have a window at the end */ |
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| 453 | if (w->shown) { |
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[46e2e56] | 454 | /* resizing in ncurses is hard: give up do a unrealize/realize */ |
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| 455 | _owl_window_unrealize(w); |
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[449af72] | 456 | } |
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[678a505c] | 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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[7a6e6c7] | 461 | g_signal_emit(w, window_signals[RESIZED], 0); |
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[50031f0] | 462 | if (w->shown) { |
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[46e2e56] | 463 | _owl_window_realize(w); |
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[449af72] | 464 | } |
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| 465 | } |
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| 466 | |
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| 467 | void owl_window_resize(owl_window *w, int nlines, int ncols) |
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| 468 | { |
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| 469 | owl_window_set_position(w, nlines, ncols, w->begin_y, w->begin_x); |
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| 470 | } |
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| 471 | |
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| 472 | /** Stacking order **/ |
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| 473 | |
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| 474 | void owl_window_top(owl_window *w) { |
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| 475 | if (!w->pan) { |
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[7c8811c] | 476 | owl_function_debugmsg("Warning: owl_window_top only makes sense on top-level window"); |
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[449af72] | 477 | return; |
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| 478 | } |
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| 479 | top_panel(w->pan); |
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| 480 | } |
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| 481 | |
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| 482 | owl_window *owl_window_above(owl_window *w) { |
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| 483 | PANEL *pan; |
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| 484 | |
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| 485 | if (!w->pan) { |
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| 486 | owl_function_debugmsg("Warning: owl_window_above only makes sense on top-level window"); |
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| 487 | return NULL; |
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| 488 | } |
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| 489 | pan = panel_above(w->pan); |
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| 490 | /* cast because panel_userptr pointlessly returns a const void * */ |
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| 491 | return pan ? (void*) panel_userptr(pan) : NULL; |
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| 492 | } |
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| 493 | |
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| 494 | owl_window *owl_window_below(owl_window *w) { |
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| 495 | PANEL *pan; |
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| 496 | |
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| 497 | if (!w->pan) { |
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| 498 | owl_function_debugmsg("Warning: owl_window_above only makes sense on top-level window"); |
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| 499 | return NULL; |
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| 500 | } |
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| 501 | pan = panel_below(w->pan); |
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| 502 | /* cast because panel_userptr pointlessly returns a const void * */ |
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| 503 | return pan ? (void*) panel_userptr(pan) : NULL; |
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| 504 | } |
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