[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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[84a4aca] | 44 | static owl_window *cursor_owner; |
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[f70a7a3] | 45 | static owl_window *default_cursor; |
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[84a4aca] | 46 | |
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[053f751] | 47 | G_DEFINE_TYPE (OwlWindow, owl_window, G_TYPE_OBJECT) |
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| 48 | |
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| 49 | static void owl_window_class_init (OwlWindowClass *klass) |
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| 50 | { |
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[7a6e6c7] | 51 | GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
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| 52 | |
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| 53 | /* Set up the vtabl */ |
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| 54 | gobject_class->dispose = owl_window_dispose; |
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| 55 | gobject_class->finalize = owl_window_finalize; |
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| 56 | |
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[f91767d] | 57 | klass->redraw = NULL; |
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[7a6e6c7] | 58 | klass->resized = NULL; |
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| 59 | |
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| 60 | /* Create the signals, remember IDs */ |
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| 61 | window_signals[REDRAW] = |
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| 62 | g_signal_new("redraw", |
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| 63 | G_TYPE_FROM_CLASS(gobject_class), |
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| 64 | G_SIGNAL_RUN_CLEANUP, |
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| 65 | G_STRUCT_OFFSET(OwlWindowClass, redraw), |
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| 66 | NULL, NULL, |
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| 67 | g_cclosure_marshal_VOID__POINTER, |
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| 68 | G_TYPE_NONE, |
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| 69 | 1, |
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| 70 | G_TYPE_POINTER, NULL); |
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| 71 | |
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| 72 | /* TODO: maybe type should be VOID__INT_INT_INT_INT; will need to generate a |
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| 73 | * marshaller */ |
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| 74 | window_signals[RESIZED] = |
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| 75 | g_signal_new("resized", |
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| 76 | G_TYPE_FROM_CLASS(gobject_class), |
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| 77 | G_SIGNAL_RUN_FIRST, |
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| 78 | G_STRUCT_OFFSET(OwlWindowClass, resized), |
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| 79 | NULL, NULL, |
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| 80 | g_cclosure_marshal_VOID__VOID, |
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| 81 | G_TYPE_NONE, |
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| 82 | 0, |
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| 83 | NULL); |
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[053f751] | 84 | } |
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| 85 | |
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| 86 | static void owl_window_dispose (GObject *object) |
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| 87 | { |
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| 88 | owl_window *w = OWL_WINDOW (object); |
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| 89 | |
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| 90 | /* Unmap the window */ |
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| 91 | owl_window_hide (w); |
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| 92 | |
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| 93 | /* Unlink and unref all children */ |
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| 94 | while (w->child) { |
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| 95 | owl_window *child = w->child; |
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| 96 | owl_window_unlink (child); |
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| 97 | } |
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| 98 | |
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| 99 | /* Remove from hierarchy */ |
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| 100 | owl_window_unlink (w); |
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| 101 | |
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| 102 | G_OBJECT_CLASS (owl_window_parent_class)->dispose (object); |
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| 103 | } |
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| 104 | |
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| 105 | static void owl_window_finalize (GObject *object) |
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| 106 | { |
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| 107 | owl_window *w = OWL_WINDOW(object); |
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| 108 | |
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| 109 | if (w->pan) { |
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| 110 | del_panel(w->pan); |
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| 111 | w->pan = NULL; |
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| 112 | } |
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| 113 | |
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| 114 | G_OBJECT_CLASS (owl_window_parent_class)->finalize (object); |
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| 115 | } |
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| 116 | |
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| 117 | static void owl_window_init (owl_window *w) |
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| 118 | { |
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| 119 | } |
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| 120 | |
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[449af72] | 121 | /** singletons **/ |
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| 122 | |
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| 123 | static WINDOW *_dummy_window(void) |
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| 124 | { |
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| 125 | static WINDOW *dummy = NULL; |
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| 126 | if (!dummy) { |
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| 127 | dummy = newwin(1, 1, 0, 0); |
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| 128 | } |
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| 129 | return dummy; |
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| 130 | } |
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| 131 | |
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| 132 | owl_window *owl_window_get_screen(void) |
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| 133 | { |
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| 134 | static owl_window *screen = NULL; |
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| 135 | if (!screen) { |
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[50031f0] | 136 | /* The screen is magical. It's 'shown', but the only mean of it going |
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[449af72] | 137 | * invisible is if we're tore down curses (i.e. screen resize) */ |
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| 138 | screen = _owl_window_new(NULL, g.lines, g.cols, 0, 0); |
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| 139 | screen->is_screen = 1; |
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[402ed3d3] | 140 | owl_window_show(screen); |
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[449af72] | 141 | } |
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| 142 | return screen; |
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| 143 | } |
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| 144 | |
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| 145 | /** Creation and Destruction **/ |
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| 146 | |
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[d106110] | 147 | owl_window *owl_window_new(owl_window *parent) |
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[449af72] | 148 | { |
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| 149 | if (!parent) |
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| 150 | parent = owl_window_get_screen(); |
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[d106110] | 151 | return _owl_window_new(parent, 0, 0, 0, 0); |
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[449af72] | 152 | } |
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| 153 | |
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| 154 | static owl_window *_owl_window_new(owl_window *parent, int nlines, int ncols, int begin_y, int begin_x) |
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| 155 | { |
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| 156 | owl_window *w; |
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| 157 | |
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[053f751] | 158 | w = g_object_new (OWL_TYPE_WINDOW, NULL); |
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| 159 | if (w == NULL) g_error("Failed to create owl_window instance"); |
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[449af72] | 160 | |
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| 161 | w->nlines = nlines; |
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| 162 | w->ncols = ncols; |
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| 163 | w->begin_y = begin_y; |
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| 164 | w->begin_x = begin_x; |
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| 165 | |
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| 166 | _owl_window_link(w, parent); |
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| 167 | if (parent && parent->is_screen) { |
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| 168 | w->pan = new_panel(_dummy_window()); |
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| 169 | set_panel_userptr(w->pan, w); |
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| 170 | } |
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| 171 | |
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| 172 | return w; |
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| 173 | } |
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| 174 | |
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| 175 | /** Hierarchy **/ |
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| 176 | |
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[3da1f4f] | 177 | void owl_window_unlink(owl_window *w) |
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[449af72] | 178 | { |
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[ec4ccfc] | 179 | /* make sure the window is unmapped first */ |
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[46e2e56] | 180 | _owl_window_unrealize(w); |
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[449af72] | 181 | /* unlink parent/child information */ |
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| 182 | if (w->parent) { |
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| 183 | if (w->prev) |
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| 184 | w->prev->next = w->next; |
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| 185 | if (w->next) |
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| 186 | w->next->prev = w->prev; |
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| 187 | if (w->parent->child == w) |
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| 188 | w->parent->child = w->next; |
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[933aa7d] | 189 | w->parent = NULL; |
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[053f751] | 190 | g_object_unref (w); |
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[449af72] | 191 | } |
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| 192 | } |
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| 193 | |
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| 194 | static void _owl_window_link(owl_window *w, owl_window *parent) |
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| 195 | { |
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| 196 | if (w->parent == parent) |
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| 197 | return; |
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| 198 | |
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[933aa7d] | 199 | owl_window_unlink(w); |
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[449af72] | 200 | if (parent) { |
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[933aa7d] | 201 | w->parent = parent; |
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[449af72] | 202 | w->next = parent->child; |
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[5ca3fb7] | 203 | if (w->next) |
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| 204 | w->next->prev = w; |
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[449af72] | 205 | parent->child = w; |
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[053f751] | 206 | g_object_ref (w); |
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[449af72] | 207 | } |
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| 208 | } |
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| 209 | |
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| 210 | /* mimic g_list_foreach for consistency */ |
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| 211 | void owl_window_children_foreach(owl_window *parent, GFunc func, gpointer user_data) |
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| 212 | { |
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| 213 | owl_window *w; |
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| 214 | for (w = parent->child; |
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| 215 | w != NULL; |
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| 216 | w = w->next) { |
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| 217 | func(w, user_data); |
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| 218 | } |
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| 219 | } |
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| 220 | |
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[1aa4cc4] | 221 | owl_window *owl_window_parent(owl_window *w) |
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[b6cb985] | 222 | { |
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| 223 | return w->parent; |
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| 224 | } |
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| 225 | |
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[1aa4cc4] | 226 | owl_window *owl_window_first_child(owl_window *w) |
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| 227 | { |
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| 228 | return w->child; |
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| 229 | } |
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| 230 | |
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| 231 | owl_window *owl_window_next_sibling(owl_window *w) |
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| 232 | { |
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| 233 | return w->next; |
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| 234 | } |
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| 235 | |
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| 236 | owl_window *owl_window_previous_sibling(owl_window *w) |
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| 237 | { |
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| 238 | return w->prev; |
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| 239 | } |
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| 240 | |
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[449af72] | 241 | /** Internal window management **/ |
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| 242 | |
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| 243 | static void _owl_window_create_curses(owl_window *w) |
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| 244 | { |
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| 245 | if (w->is_screen) { |
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| 246 | resizeterm(w->nlines, w->ncols); |
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[2dfccc7] | 247 | w->win = stdscr; |
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[449af72] | 248 | } else { |
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[aab7af1] | 249 | /* Explicitly disallow realizing an unlinked non-root */ |
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[fe49685] | 250 | if (w->parent == NULL || w->parent->win == NULL) |
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| 251 | return; |
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[aab7af1] | 252 | 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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| 256 | w->win = derwin(w->parent->win, w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 257 | } |
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[449af72] | 258 | } |
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| 259 | } |
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| 260 | |
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| 261 | static void _owl_window_destroy_curses(owl_window *w) |
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| 262 | { |
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| 263 | if (w->is_screen) { |
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| 264 | /* don't deallocate the dummy */ |
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| 265 | w->win = NULL; |
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| 266 | } else { |
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| 267 | if (w->pan) { |
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| 268 | /* panels assume their windows always exist, so we put in a fake one */ |
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| 269 | replace_panel(w->pan, _dummy_window()); |
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| 270 | } |
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| 271 | if (w->win) { |
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| 272 | /* and destroy our own window */ |
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| 273 | delwin(w->win); |
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| 274 | w->win = NULL; |
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| 275 | } |
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| 276 | } |
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| 277 | } |
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| 278 | |
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[402ed3d3] | 279 | void owl_window_show(owl_window *w) |
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[449af72] | 280 | { |
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[50031f0] | 281 | w->shown = 1; |
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[46e2e56] | 282 | _owl_window_realize(w); |
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[449af72] | 283 | if (w->pan) |
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| 284 | show_panel(w->pan); |
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[402ed3d3] | 285 | } |
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| 286 | |
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| 287 | void owl_window_show_all(owl_window *w) |
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| 288 | { |
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| 289 | owl_window_show(w); |
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[7a70e26] | 290 | owl_window_children_foreach(w, (GFunc)owl_window_show, 0); |
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[449af72] | 291 | } |
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| 292 | |
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[50031f0] | 293 | void owl_window_hide(owl_window *w) |
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[449af72] | 294 | { |
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| 295 | /* you can't unmap the screen */ |
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| 296 | if (w->is_screen) |
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| 297 | return; |
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[50031f0] | 298 | w->shown = 0; |
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[449af72] | 299 | if (w->pan) |
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| 300 | hide_panel(w->pan); |
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[46e2e56] | 301 | _owl_window_unrealize(w); |
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[449af72] | 302 | } |
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| 303 | |
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[38e2250] | 304 | bool owl_window_is_shown(owl_window *w) |
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[449af72] | 305 | { |
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[50031f0] | 306 | return w->shown; |
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[449af72] | 307 | } |
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| 308 | |
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[38e2250] | 309 | bool owl_window_is_realized(owl_window *w) |
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[449af72] | 310 | { |
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| 311 | return w->win != NULL; |
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| 312 | } |
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| 313 | |
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[38e2250] | 314 | bool owl_window_is_toplevel(owl_window *w) |
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[449af72] | 315 | { |
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| 316 | return w->pan != NULL; |
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| 317 | } |
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| 318 | |
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[38e2250] | 319 | bool owl_window_is_subwin(owl_window *w) |
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[9379760] | 320 | { |
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| 321 | return w->pan == NULL && !w->is_screen; |
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| 322 | } |
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| 323 | |
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[5f0bcde] | 324 | static bool _owl_window_should_realize(owl_window *w) |
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| 325 | { |
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| 326 | return owl_window_is_shown(w) && |
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| 327 | (!w->parent || owl_window_is_realized(w->parent)); |
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| 328 | } |
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| 329 | |
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[46e2e56] | 330 | static void _owl_window_realize(owl_window *w) |
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[449af72] | 331 | { |
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| 332 | /* check if we can create a window */ |
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[5f0bcde] | 333 | if (owl_window_is_realized(w) || !_owl_window_should_realize(w)) |
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[449af72] | 334 | return; |
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[f041595] | 335 | if (w->nlines <= 0 || w->ncols <= 0) |
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| 336 | return; |
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[449af72] | 337 | _owl_window_create_curses(w); |
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[fe49685] | 338 | if (w->win == NULL) |
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| 339 | return; |
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[449af72] | 340 | /* schedule a repaint */ |
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| 341 | owl_window_dirty(w); |
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[fe49685] | 342 | /* map the children */ |
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[7a70e26] | 343 | owl_window_children_foreach(w, (GFunc)_owl_window_realize, 0); |
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[449af72] | 344 | } |
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| 345 | |
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[46e2e56] | 346 | static void _owl_window_unrealize(owl_window *w) |
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[449af72] | 347 | { |
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| 348 | if (w->win == NULL) |
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| 349 | return; |
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| 350 | /* unmap all the children */ |
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[7a70e26] | 351 | owl_window_children_foreach(w, (GFunc)_owl_window_unrealize, 0); |
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[449af72] | 352 | _owl_window_destroy_curses(w); |
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[cb5a9f3] | 353 | w->dirty = w->dirty_subtree = 0; |
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[449af72] | 354 | /* subwins leave a mess in the parent; dirty it */ |
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| 355 | if (w->parent) |
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| 356 | owl_window_dirty(w->parent); |
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| 357 | } |
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| 358 | |
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| 359 | /** Painting and book-keeping **/ |
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| 360 | |
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[84a4aca] | 361 | void owl_window_set_cursor(owl_window *w) |
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| 362 | { |
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[cc36f27] | 363 | if (cursor_owner) |
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| 364 | g_object_remove_weak_pointer(G_OBJECT(cursor_owner), (gpointer*) &cursor_owner); |
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[84a4aca] | 365 | cursor_owner = w; |
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[f70a7a3] | 366 | if (w) |
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| 367 | g_object_add_weak_pointer(G_OBJECT(w), (gpointer*) &cursor_owner); |
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[5cc7e5e] | 368 | owl_window_dirty(owl_window_get_screen()); |
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[84a4aca] | 369 | } |
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| 370 | |
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[f70a7a3] | 371 | void owl_window_set_default_cursor(owl_window *w) |
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| 372 | { |
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| 373 | if (default_cursor) |
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| 374 | g_object_remove_weak_pointer(G_OBJECT(default_cursor), (gpointer*) &default_cursor); |
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| 375 | default_cursor = w; |
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| 376 | if (w) |
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| 377 | g_object_add_weak_pointer(G_OBJECT(w), (gpointer*) &default_cursor); |
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[5cc7e5e] | 378 | owl_window_dirty(owl_window_get_screen()); |
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[f70a7a3] | 379 | } |
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| 380 | |
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| 381 | static owl_window *_get_cursor(void) |
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| 382 | { |
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| 383 | if (cursor_owner && owl_window_is_realized(cursor_owner)) |
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| 384 | return cursor_owner; |
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| 385 | if (default_cursor && owl_window_is_realized(default_cursor)) |
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| 386 | return default_cursor; |
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| 387 | return owl_window_get_screen(); |
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| 388 | } |
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| 389 | |
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[449af72] | 390 | void owl_window_dirty(owl_window *w) |
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| 391 | { |
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[7cbef8c] | 392 | if (!owl_window_is_realized(w)) |
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| 393 | return; |
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[449af72] | 394 | if (!w->dirty) { |
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| 395 | w->dirty = 1; |
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| 396 | while (w && !w->dirty_subtree) { |
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| 397 | w->dirty_subtree = 1; |
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| 398 | w = w->parent; |
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| 399 | } |
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| 400 | } |
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| 401 | } |
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| 402 | |
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| 403 | void owl_window_dirty_children(owl_window *w) |
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| 404 | { |
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[7a70e26] | 405 | owl_window_children_foreach(w, (GFunc)owl_window_dirty, 0); |
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[449af72] | 406 | } |
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| 407 | |
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| 408 | static void _owl_window_redraw(owl_window *w) |
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| 409 | { |
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| 410 | if (!w->dirty) return; |
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[1f4ea57] | 411 | if (w->win && !w->is_screen) { |
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[9379760] | 412 | if (owl_window_is_subwin(w)) { |
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[f91767d] | 413 | /* If a subwin, we might have gotten random touched lines from wsyncup or |
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| 414 | * past drawing. That information is useless, so we discard it all */ |
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| 415 | untouchwin(w->win); |
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| 416 | } |
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[7a6e6c7] | 417 | g_signal_emit(w, window_signals[REDRAW], 0, w->win); |
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[f91767d] | 418 | wsyncup(w->win); |
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[449af72] | 419 | } |
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| 420 | w->dirty = 0; |
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| 421 | } |
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| 422 | |
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| 423 | static void _owl_window_redraw_subtree(owl_window *w) |
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| 424 | { |
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| 425 | if (!w->dirty_subtree) |
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| 426 | return; |
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| 427 | _owl_window_redraw(w); |
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[7a70e26] | 428 | owl_window_children_foreach(w, (GFunc)_owl_window_redraw_subtree, 0); |
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[438409f] | 429 | w->dirty_subtree = 0; |
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[449af72] | 430 | } |
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| 431 | |
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| 432 | /* |
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| 433 | Redraw all the windows with scheduled redraws. |
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| 434 | NOTE: This function shouldn't be called outside the event loop |
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| 435 | */ |
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| 436 | void owl_window_redraw_scheduled(void) |
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| 437 | { |
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[f70a7a3] | 438 | owl_window *cursor; |
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[5cc7e5e] | 439 | owl_window *screen = owl_window_get_screen(); |
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[f70a7a3] | 440 | |
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[5cc7e5e] | 441 | if (!screen->dirty_subtree) |
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| 442 | return; |
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| 443 | _owl_window_redraw_subtree(screen); |
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[a57f87a] | 444 | update_panels(); |
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[f70a7a3] | 445 | cursor = _get_cursor(); |
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| 446 | if (cursor && cursor->win) { |
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[f91767d] | 447 | /* untouch it to avoid drawing; window should be clean now, but we must |
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| 448 | * clean up in case there was junk left over on a subwin (cleaning up after |
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| 449 | * subwin drawing isn't sufficient because a wsyncup messes up subwin |
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| 450 | * ancestors */ |
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[f70a7a3] | 451 | untouchwin(cursor->win); |
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| 452 | wnoutrefresh(cursor->win); |
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[f91767d] | 453 | } |
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[5cc7e5e] | 454 | doupdate(); |
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[7a6e6c7] | 455 | } |
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| 456 | |
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[449af72] | 457 | /** Window position **/ |
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| 458 | |
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| 459 | void owl_window_get_position(owl_window *w, int *nlines, int *ncols, int *begin_y, int *begin_x) |
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| 460 | { |
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| 461 | if (nlines) *nlines = w->nlines; |
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| 462 | if (ncols) *ncols = w->ncols; |
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| 463 | if (begin_y) *begin_y = w->begin_y; |
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| 464 | if (begin_x) *begin_x = w->begin_x; |
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| 465 | } |
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| 466 | |
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[b0cbde4] | 467 | void owl_window_move(owl_window *w, int begin_y, int begin_x) |
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| 468 | { |
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[b9d04ad] | 469 | /* It is possible to move a window efficiently with move_panel and mvderwin, |
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| 470 | * but begy and begx are then wrong. Currently, this only effects the |
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| 471 | * wnoutrefresh to move cursor. TODO: fix that and reinstate that |
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| 472 | * optimization if it's worth the trouble */ |
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[d15ea5f] | 473 | owl_window_set_position(w, w->nlines, w->ncols, begin_y, begin_x); |
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[b0cbde4] | 474 | } |
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| 475 | |
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[449af72] | 476 | void owl_window_set_position(owl_window *w, int nlines, int ncols, int begin_y, int begin_x) |
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| 477 | { |
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[840032d] | 478 | int resized; |
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[449af72] | 479 | |
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[d15ea5f] | 480 | if (w->nlines == nlines && w->ncols == ncols |
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| 481 | && w->begin_y == begin_y && w->begin_x == begin_x) { |
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[449af72] | 482 | return; |
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| 483 | } |
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[840032d] | 484 | resized = w->nlines != nlines || w->ncols != ncols; |
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[449af72] | 485 | |
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[d15ea5f] | 486 | _owl_window_unrealize(w); |
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[678a505c] | 487 | w->begin_y = begin_y; |
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| 488 | w->begin_x = begin_x; |
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| 489 | w->nlines = nlines; |
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| 490 | w->ncols = ncols; |
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[840032d] | 491 | if (resized) |
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| 492 | g_signal_emit(w, window_signals[RESIZED], 0); |
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[50031f0] | 493 | if (w->shown) { |
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[d15ea5f] | 494 | /* ncurses is screwy: give up and recreate windows at the right place */ |
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[46e2e56] | 495 | _owl_window_realize(w); |
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[449af72] | 496 | } |
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| 497 | } |
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| 498 | |
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| 499 | void owl_window_resize(owl_window *w, int nlines, int ncols) |
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| 500 | { |
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| 501 | owl_window_set_position(w, nlines, ncols, w->begin_y, w->begin_x); |
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| 502 | } |
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