[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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[053f751] | 46 | G_DEFINE_TYPE (OwlWindow, owl_window, G_TYPE_OBJECT) |
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| 47 | |
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| 48 | static void owl_window_class_init (OwlWindowClass *klass) |
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| 49 | { |
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[7a6e6c7] | 50 | GObjectClass *gobject_class = G_OBJECT_CLASS (klass); |
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| 51 | |
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| 52 | /* Set up the vtabl */ |
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| 53 | gobject_class->dispose = owl_window_dispose; |
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| 54 | gobject_class->finalize = owl_window_finalize; |
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| 55 | |
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| 56 | klass->redraw = _owl_window_redraw_cleanup; |
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| 57 | klass->resized = NULL; |
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| 58 | |
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| 59 | /* Create the signals, remember IDs */ |
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| 60 | window_signals[REDRAW] = |
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| 61 | g_signal_new("redraw", |
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| 62 | G_TYPE_FROM_CLASS(gobject_class), |
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| 63 | G_SIGNAL_RUN_CLEANUP, |
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| 64 | G_STRUCT_OFFSET(OwlWindowClass, redraw), |
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| 65 | NULL, NULL, |
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| 66 | g_cclosure_marshal_VOID__POINTER, |
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| 67 | G_TYPE_NONE, |
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| 68 | 1, |
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| 69 | G_TYPE_POINTER, NULL); |
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| 70 | |
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| 71 | /* TODO: maybe type should be VOID__INT_INT_INT_INT; will need to generate a |
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| 72 | * marshaller */ |
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| 73 | window_signals[RESIZED] = |
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| 74 | g_signal_new("resized", |
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| 75 | G_TYPE_FROM_CLASS(gobject_class), |
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| 76 | G_SIGNAL_RUN_FIRST, |
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| 77 | G_STRUCT_OFFSET(OwlWindowClass, resized), |
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| 78 | NULL, NULL, |
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| 79 | g_cclosure_marshal_VOID__VOID, |
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| 80 | G_TYPE_NONE, |
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| 81 | 0, |
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| 82 | NULL); |
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[053f751] | 83 | } |
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| 84 | |
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| 85 | static void owl_window_dispose (GObject *object) |
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| 86 | { |
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| 87 | owl_window *w = OWL_WINDOW (object); |
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| 88 | |
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| 89 | /* Unmap the window */ |
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| 90 | owl_window_hide (w); |
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| 91 | |
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| 92 | /* Unlink and unref all children */ |
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| 93 | while (w->child) { |
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| 94 | owl_window *child = w->child; |
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| 95 | owl_window_unlink (child); |
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| 96 | } |
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| 97 | |
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| 98 | /* Remove from hierarchy */ |
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| 99 | owl_window_unlink (w); |
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| 100 | |
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| 101 | G_OBJECT_CLASS (owl_window_parent_class)->dispose (object); |
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| 102 | } |
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| 103 | |
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| 104 | static void owl_window_finalize (GObject *object) |
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| 105 | { |
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| 106 | owl_window *w = OWL_WINDOW(object); |
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| 107 | |
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| 108 | if (w->pan) { |
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| 109 | del_panel(w->pan); |
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| 110 | w->pan = NULL; |
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| 111 | } |
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| 112 | |
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| 113 | G_OBJECT_CLASS (owl_window_parent_class)->finalize (object); |
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| 114 | } |
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| 115 | |
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| 116 | static void owl_window_init (owl_window *w) |
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| 117 | { |
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| 118 | } |
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| 119 | |
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[449af72] | 120 | /** singletons **/ |
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| 121 | |
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| 122 | static WINDOW *_dummy_window(void) |
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| 123 | { |
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| 124 | static WINDOW *dummy = NULL; |
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| 125 | if (!dummy) { |
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| 126 | dummy = newwin(1, 1, 0, 0); |
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| 127 | } |
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| 128 | return dummy; |
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| 129 | } |
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| 130 | |
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| 131 | owl_window *owl_window_get_screen(void) |
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| 132 | { |
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| 133 | static owl_window *screen = NULL; |
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| 134 | if (!screen) { |
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[50031f0] | 135 | /* The screen is magical. It's 'shown', but the only mean of it going |
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[449af72] | 136 | * invisible is if we're tore down curses (i.e. screen resize) */ |
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| 137 | screen = _owl_window_new(NULL, g.lines, g.cols, 0, 0); |
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| 138 | screen->is_screen = 1; |
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[402ed3d3] | 139 | owl_window_show(screen); |
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[449af72] | 140 | } |
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| 141 | return screen; |
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| 142 | } |
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| 143 | |
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| 144 | /** Creation and Destruction **/ |
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| 145 | |
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[d106110] | 146 | owl_window *owl_window_new(owl_window *parent) |
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[449af72] | 147 | { |
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| 148 | if (!parent) |
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| 149 | parent = owl_window_get_screen(); |
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[d106110] | 150 | return _owl_window_new(parent, 0, 0, 0, 0); |
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[449af72] | 151 | } |
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| 152 | |
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| 153 | static owl_window *_owl_window_new(owl_window *parent, int nlines, int ncols, int begin_y, int begin_x) |
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| 154 | { |
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| 155 | owl_window *w; |
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| 156 | |
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[053f751] | 157 | w = g_object_new (OWL_TYPE_WINDOW, NULL); |
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| 158 | if (w == NULL) g_error("Failed to create owl_window instance"); |
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[449af72] | 159 | |
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| 160 | w->nlines = nlines; |
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| 161 | w->ncols = ncols; |
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| 162 | w->begin_y = begin_y; |
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| 163 | w->begin_x = begin_x; |
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| 164 | |
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| 165 | _owl_window_link(w, parent); |
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| 166 | if (parent && parent->is_screen) { |
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| 167 | w->pan = new_panel(_dummy_window()); |
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| 168 | set_panel_userptr(w->pan, w); |
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| 169 | } |
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| 170 | |
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| 171 | return w; |
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| 172 | } |
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| 173 | |
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| 174 | /** Hierarchy **/ |
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| 175 | |
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[3da1f4f] | 176 | void owl_window_unlink(owl_window *w) |
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[449af72] | 177 | { |
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[ec4ccfc] | 178 | /* make sure the window is unmapped first */ |
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[46e2e56] | 179 | _owl_window_unrealize(w); |
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[449af72] | 180 | /* unlink parent/child information */ |
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| 181 | if (w->parent) { |
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| 182 | if (w->prev) |
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| 183 | w->prev->next = w->next; |
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| 184 | if (w->next) |
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| 185 | w->next->prev = w->prev; |
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| 186 | if (w->parent->child == w) |
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| 187 | w->parent->child = w->next; |
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[933aa7d] | 188 | w->parent = NULL; |
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[053f751] | 189 | g_object_unref (w); |
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[449af72] | 190 | } |
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| 191 | } |
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| 192 | |
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| 193 | static void _owl_window_link(owl_window *w, owl_window *parent) |
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| 194 | { |
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| 195 | if (w->parent == parent) |
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| 196 | return; |
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| 197 | |
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[933aa7d] | 198 | owl_window_unlink(w); |
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[449af72] | 199 | if (parent) { |
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[933aa7d] | 200 | w->parent = parent; |
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[449af72] | 201 | w->next = parent->child; |
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| 202 | parent->child = w; |
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[053f751] | 203 | g_object_ref (w); |
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[449af72] | 204 | } |
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| 205 | } |
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| 206 | |
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| 207 | /* mimic g_list_foreach for consistency */ |
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| 208 | void owl_window_children_foreach(owl_window *parent, GFunc func, gpointer user_data) |
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| 209 | { |
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| 210 | owl_window *w; |
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| 211 | for (w = parent->child; |
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| 212 | w != NULL; |
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| 213 | w = w->next) { |
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| 214 | func(w, user_data); |
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| 215 | } |
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| 216 | } |
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| 217 | |
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[b6cb985] | 218 | owl_window *owl_window_get_parent(owl_window *w) |
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| 219 | { |
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| 220 | return w->parent; |
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| 221 | } |
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| 222 | |
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[449af72] | 223 | /** Internal window management **/ |
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| 224 | |
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| 225 | static void _owl_window_create_curses(owl_window *w) |
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| 226 | { |
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| 227 | if (w->is_screen) { |
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| 228 | resizeterm(w->nlines, w->ncols); |
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[2dfccc7] | 229 | w->win = stdscr; |
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[449af72] | 230 | } else if (w->pan) { |
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| 231 | w->win = newwin(w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 232 | replace_panel(w->pan, w->win); |
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| 233 | } else { |
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[fe49685] | 234 | if (w->parent == NULL || w->parent->win == NULL) |
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| 235 | return; |
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[449af72] | 236 | w->win = derwin(w->parent->win, w->nlines, w->ncols, w->begin_y, w->begin_x); |
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| 237 | } |
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| 238 | } |
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| 239 | |
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| 240 | static void _owl_window_destroy_curses(owl_window *w) |
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| 241 | { |
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| 242 | if (w->is_screen) { |
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| 243 | /* don't deallocate the dummy */ |
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| 244 | w->win = NULL; |
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| 245 | } else { |
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| 246 | if (w->pan) { |
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| 247 | /* panels assume their windows always exist, so we put in a fake one */ |
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| 248 | replace_panel(w->pan, _dummy_window()); |
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| 249 | } |
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| 250 | if (w->win) { |
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| 251 | /* and destroy our own window */ |
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| 252 | delwin(w->win); |
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| 253 | w->win = NULL; |
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| 254 | } |
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| 255 | } |
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| 256 | } |
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| 257 | |
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[402ed3d3] | 258 | void owl_window_show(owl_window *w) |
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[449af72] | 259 | { |
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[50031f0] | 260 | w->shown = 1; |
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[46e2e56] | 261 | _owl_window_realize(w); |
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[449af72] | 262 | if (w->pan) |
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| 263 | show_panel(w->pan); |
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[402ed3d3] | 264 | } |
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| 265 | |
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| 266 | void owl_window_show_all(owl_window *w) |
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| 267 | { |
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| 268 | owl_window_show(w); |
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[7a70e26] | 269 | owl_window_children_foreach(w, (GFunc)owl_window_show, 0); |
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[449af72] | 270 | } |
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| 271 | |
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[50031f0] | 272 | void owl_window_hide(owl_window *w) |
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[449af72] | 273 | { |
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| 274 | /* you can't unmap the screen */ |
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| 275 | if (w->is_screen) |
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| 276 | return; |
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[50031f0] | 277 | w->shown = 0; |
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[449af72] | 278 | if (w->pan) |
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| 279 | hide_panel(w->pan); |
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[46e2e56] | 280 | _owl_window_unrealize(w); |
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[449af72] | 281 | } |
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| 282 | |
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[50031f0] | 283 | int owl_window_is_shown(owl_window *w) |
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[449af72] | 284 | { |
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[50031f0] | 285 | return w->shown; |
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[449af72] | 286 | } |
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| 287 | |
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[ce7c6c3] | 288 | int owl_window_is_realized(owl_window *w) |
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[449af72] | 289 | { |
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| 290 | return w->win != NULL; |
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| 291 | } |
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| 292 | |
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| 293 | int owl_window_is_toplevel(owl_window *w) |
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| 294 | { |
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| 295 | return w->pan != NULL; |
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| 296 | } |
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| 297 | |
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[46e2e56] | 298 | static void _owl_window_realize(owl_window *w) |
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[449af72] | 299 | { |
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| 300 | /* check if we can create a window */ |
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| 301 | if ((w->parent && w->parent->win == NULL) |
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[50031f0] | 302 | || !w->shown |
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[449af72] | 303 | || w->win != NULL) |
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| 304 | return; |
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| 305 | _owl_window_create_curses(w); |
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[fe49685] | 306 | if (w->win == NULL) |
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| 307 | return; |
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[449af72] | 308 | /* schedule a repaint */ |
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| 309 | owl_window_dirty(w); |
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[fe49685] | 310 | /* map the children */ |
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[7a70e26] | 311 | owl_window_children_foreach(w, (GFunc)_owl_window_realize, 0); |
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[449af72] | 312 | } |
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| 313 | |
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[46e2e56] | 314 | static void _owl_window_unrealize(owl_window *w) |
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[449af72] | 315 | { |
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| 316 | if (w->win == NULL) |
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| 317 | return; |
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| 318 | /* unmap all the children */ |
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[7a70e26] | 319 | owl_window_children_foreach(w, (GFunc)_owl_window_unrealize, 0); |
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[449af72] | 320 | _owl_window_destroy_curses(w); |
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| 321 | /* subwins leave a mess in the parent; dirty it */ |
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| 322 | if (w->parent) |
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| 323 | owl_window_dirty(w->parent); |
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| 324 | } |
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| 325 | |
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| 326 | /** Painting and book-keeping **/ |
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| 327 | |
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| 328 | void owl_window_dirty(owl_window *w) |
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| 329 | { |
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| 330 | /* don't put the screen on this list; pointless */ |
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| 331 | if (w->is_screen) |
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| 332 | return; |
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[7cbef8c] | 333 | if (!owl_window_is_realized(w)) |
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| 334 | return; |
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[449af72] | 335 | if (!w->dirty) { |
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| 336 | w->dirty = 1; |
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| 337 | while (w && !w->dirty_subtree) { |
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| 338 | w->dirty_subtree = 1; |
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| 339 | w = w->parent; |
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| 340 | } |
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| 341 | owl_global_set_needrefresh(&g); |
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| 342 | } |
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| 343 | } |
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| 344 | |
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| 345 | void owl_window_dirty_children(owl_window *w) |
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| 346 | { |
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[7a70e26] | 347 | owl_window_children_foreach(w, (GFunc)owl_window_dirty, 0); |
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[449af72] | 348 | } |
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| 349 | |
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| 350 | static void _owl_window_redraw(owl_window *w) |
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| 351 | { |
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| 352 | if (!w->dirty) return; |
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[7a6e6c7] | 353 | if (w->win) { |
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| 354 | g_signal_emit(w, window_signals[REDRAW], 0, w->win); |
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[449af72] | 355 | } |
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| 356 | w->dirty = 0; |
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| 357 | } |
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| 358 | |
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| 359 | static void _owl_window_redraw_subtree(owl_window *w) |
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| 360 | { |
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| 361 | if (!w->dirty_subtree) |
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| 362 | return; |
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| 363 | _owl_window_redraw(w); |
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[7a70e26] | 364 | owl_window_children_foreach(w, (GFunc)_owl_window_redraw_subtree, 0); |
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[449af72] | 365 | } |
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| 366 | |
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| 367 | /* |
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| 368 | Redraw all the windows with scheduled redraws. |
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| 369 | NOTE: This function shouldn't be called outside the event loop |
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| 370 | */ |
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| 371 | void owl_window_redraw_scheduled(void) |
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| 372 | { |
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| 373 | _owl_window_redraw_subtree(owl_window_get_screen()); |
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| 374 | } |
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| 375 | |
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[7a6e6c7] | 376 | static void _owl_window_redraw_cleanup(owl_window *w, WINDOW *win) |
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| 377 | { |
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| 378 | wsyncup(win); |
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| 379 | } |
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| 380 | |
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[7c8811c] | 381 | void owl_window_erase_cb(owl_window *w, WINDOW *win, void *user_data) |
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| 382 | { |
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| 383 | werase(win); |
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| 384 | owl_window_dirty_children(w); |
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| 385 | } |
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| 386 | |
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[449af72] | 387 | /** Window position **/ |
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| 388 | |
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| 389 | void owl_window_get_position(owl_window *w, int *nlines, int *ncols, int *begin_y, int *begin_x) |
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| 390 | { |
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| 391 | if (nlines) *nlines = w->nlines; |
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| 392 | if (ncols) *ncols = w->ncols; |
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| 393 | if (begin_y) *begin_y = w->begin_y; |
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| 394 | if (begin_x) *begin_x = w->begin_x; |
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| 395 | } |
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| 396 | |
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[b0cbde4] | 397 | void owl_window_move(owl_window *w, int begin_y, int begin_x) |
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| 398 | { |
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[6b93305] | 399 | if (w->is_screen) return; /* can't move the screen */ |
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| 400 | if (w->begin_y == begin_y && w->begin_x == begin_x) return; |
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[b0cbde4] | 401 | |
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| 402 | w->begin_y = begin_y; |
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| 403 | w->begin_x = begin_x; |
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[50031f0] | 404 | if (w->shown) { |
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| 405 | /* Window is shown, we must try to have a window at the end */ |
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[b0cbde4] | 406 | if (w->win) { |
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| 407 | /* We actually do have a window; let's move it */ |
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| 408 | if (w->pan) { |
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| 409 | if (move_panel(w->pan, begin_y, begin_x) == OK) |
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| 410 | return; |
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| 411 | } else { |
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| 412 | if (mvderwin(w->win, begin_y, begin_x) == OK) { |
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| 413 | /* now both we and the parent are dirty */ |
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| 414 | owl_window_dirty(w->parent); |
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| 415 | owl_window_dirty(w); |
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| 416 | return; |
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| 417 | } |
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| 418 | } |
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| 419 | } |
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| 420 | /* We don't have a window or failed to move it. Fine. Brute force. */ |
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[46e2e56] | 421 | _owl_window_unrealize(w); |
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| 422 | _owl_window_realize(w); |
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[b0cbde4] | 423 | } |
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| 424 | } |
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| 425 | |
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[449af72] | 426 | void owl_window_set_position(owl_window *w, int nlines, int ncols, int begin_y, int begin_x) |
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| 427 | { |
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| 428 | /* can't move the screen */ |
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| 429 | if (w->is_screen) { |
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| 430 | begin_y = begin_x = 0; |
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| 431 | } |
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| 432 | |
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| 433 | if (w->nlines == nlines && w->ncols == ncols) { |
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| 434 | /* moving is easier */ |
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| 435 | owl_window_move(w, begin_y, begin_x); |
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| 436 | return; |
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| 437 | } |
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| 438 | |
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| 439 | w->begin_y = begin_y; |
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| 440 | w->begin_x = begin_x; |
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| 441 | w->nlines = nlines; |
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| 442 | w->ncols = ncols; |
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[50031f0] | 443 | /* window is shown, we must try to have a window at the end */ |
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| 444 | if (w->shown) { |
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[46e2e56] | 445 | /* resizing in ncurses is hard: give up do a unrealize/realize */ |
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| 446 | _owl_window_unrealize(w); |
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[449af72] | 447 | } |
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[7a6e6c7] | 448 | g_signal_emit(w, window_signals[RESIZED], 0); |
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[50031f0] | 449 | if (w->shown) { |
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[46e2e56] | 450 | _owl_window_realize(w); |
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[449af72] | 451 | } |
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| 452 | } |
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| 453 | |
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| 454 | void owl_window_resize(owl_window *w, int nlines, int ncols) |
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| 455 | { |
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| 456 | owl_window_set_position(w, nlines, ncols, w->begin_y, w->begin_x); |
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| 457 | } |
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| 458 | |
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| 459 | /** Stacking order **/ |
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| 460 | |
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| 461 | void owl_window_top(owl_window *w) { |
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| 462 | if (!w->pan) { |
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[7c8811c] | 463 | owl_function_debugmsg("Warning: owl_window_top only makes sense on top-level window"); |
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[449af72] | 464 | return; |
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| 465 | } |
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| 466 | top_panel(w->pan); |
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| 467 | } |
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| 468 | |
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| 469 | owl_window *owl_window_above(owl_window *w) { |
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| 470 | PANEL *pan; |
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| 471 | |
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| 472 | if (!w->pan) { |
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| 473 | owl_function_debugmsg("Warning: owl_window_above only makes sense on top-level window"); |
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| 474 | return NULL; |
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| 475 | } |
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| 476 | pan = panel_above(w->pan); |
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| 477 | /* cast because panel_userptr pointlessly returns a const void * */ |
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| 478 | return pan ? (void*) panel_userptr(pan) : NULL; |
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| 479 | } |
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| 480 | |
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| 481 | owl_window *owl_window_below(owl_window *w) { |
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| 482 | PANEL *pan; |
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| 483 | |
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| 484 | if (!w->pan) { |
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| 485 | owl_function_debugmsg("Warning: owl_window_above only makes sense on top-level window"); |
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| 486 | return NULL; |
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| 487 | } |
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| 488 | pan = panel_below(w->pan); |
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| 489 | /* cast because panel_userptr pointlessly returns a const void * */ |
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| 490 | return pan ? (void*) panel_userptr(pan) : NULL; |
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| 491 | } |
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