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authorGeoff Levand <geoffrey.levand@am.sony.com>2009-04-12 15:11:57 +0000
committerJeremy Kerr <jk@ozlabs.org>2009-06-30 15:29:25 +0800
commit863c609797ca6d556dd3a4586fc07a6f4a5472d4 (patch)
treea4727c82acc5795b56962928c29fa4b113fb3d82
parent24990ffe86e0fa80dff2da365541ae67e427c57a (diff)
downloadtalos-petitboot-863c609797ca6d556dd3a4586fc07a6f4a5472d4.tar.gz
talos-petitboot-863c609797ca6d556dd3a4586fc07a6f4a5472d4.zip
Add ncurses UI menu
Add support for an ncurses UI menu object. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
-rw-r--r--rules.mk2
-rw-r--r--ui/ncurses/nc-menu.c358
-rw-r--r--ui/ncurses/nc-menu.h130
-rw-r--r--ui/ncurses/nc-scr.c129
-rw-r--r--ui/ncurses/nc-scr.h85
5 files changed, 703 insertions, 1 deletions
diff --git a/rules.mk b/rules.mk
index 9a6cf57..d3dae15 100644
--- a/rules.mk
+++ b/rules.mk
@@ -50,7 +50,7 @@ discover_objs = discover/event.o discover/user-event.o discover/udev.o \
# client objs
ui_common_objs = ui/common/discover-client.o ui/common/loader.o \
ui/common/ui-system.o ui/common/url.o
-ncurses_objs =
+ncurses_objs = ui/ncurses/nc-scr.o ui/ncurses/nc-menu.o
twin_objs = ui/twin/pb-twin.o
# Makefiles
diff --git a/ui/ncurses/nc-menu.c b/ui/ncurses/nc-menu.c
new file mode 100644
index 0000000..0a76b11
--- /dev/null
+++ b/ui/ncurses/nc-menu.c
@@ -0,0 +1,358 @@
+/*
+ * Copyright (C) 2009 Sony Computer Entertainment Inc.
+ * Copyright 2009 Sony Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define _GNU_SOURCE
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+
+#include "log/log.h"
+#include "talloc/talloc.h"
+#include "ui/common/ui-system.h"
+#include "nc-menu.h"
+
+/**
+ * pmenu_exit_cb - Callback helper that runs run menu.on_exit().
+ */
+
+int pmenu_exit_cb(struct pmenu_item *item)
+{
+ assert(item->pmenu->on_exit);
+ item->pmenu->on_exit(item->pmenu);
+ return 0;
+}
+
+/**
+ * pmenu_find_selected - Find the selected pmenu_item.
+ */
+
+struct pmenu_item *pmenu_find_selected(struct pmenu *menu)
+{
+ return pmenu_item_from_arg(item_userptr(current_item(menu->ncm)));
+}
+
+static int pmenu_post(struct nc_scr *scr)
+{
+ int result;
+ struct pmenu *menu = pmenu_from_scr(scr);
+
+ result = post_menu(menu->ncm);
+
+ nc_scr_frame_draw(scr);
+ redrawwin(menu->scr.main_ncw);
+ wrefresh(menu->scr.main_ncw);
+
+ return result;
+}
+
+static int pmenu_unpost(struct nc_scr *scr)
+{
+ return unpost_menu(pmenu_from_scr(scr)->ncm);
+}
+
+static void pmenu_resize(struct nc_scr *scr)
+{
+ /* FIXME: menus can't be resized, need to recreate here */
+ pmenu_unpost(scr);
+ pmenu_post(scr);
+}
+
+/**
+ * pmenu_item_init - Allocate and initialize a new pmenu_item instance.
+ *
+ * Returns a pointer the the initialized struct pmenu_item instance or NULL
+ * on error. The caller is responsible for calling talloc_free() for the
+ * returned instance.
+ */
+
+struct pmenu_item *pmenu_item_alloc(struct pmenu *menu)
+{
+ /* Items go with the menu, not the pointer array. */
+
+ struct pmenu_item *i = talloc_zero(menu, struct pmenu_item);
+
+ return i;
+}
+
+struct pmenu_item *pmenu_item_setup(struct pmenu *menu, struct pmenu_item *i,
+ unsigned int index, const char *name,
+ const char *description)
+{
+ assert(i);
+
+ if (!i)
+ return NULL;
+
+ i->i_sig = pb_item_sig;
+ i->pmenu = menu;
+ i->nci = new_item(name, description);
+
+ if (!i->nci) {
+ talloc_free(i);
+ return NULL;
+ }
+
+ set_item_userptr(i->nci, i);
+
+ menu->items[index] = i->nci;
+
+ return i;
+}
+
+/**
+ * pmenu_move_cursor - Move the cursor.
+ * @req: An ncurses request or char to send to menu_driver().
+ */
+
+static void pmenu_move_cursor(struct pmenu *menu, int req)
+{
+ menu_driver(menu->ncm, req);
+ wrefresh(menu->scr.main_ncw);
+}
+
+/**
+ * pmenu_process_key - Process a user keystroke.
+ */
+
+static void pmenu_process_key(struct nc_scr *scr)
+{
+ struct pmenu *menu = pmenu_from_scr(scr);
+ struct pmenu_item *item = pmenu_find_selected(menu);
+
+ nc_scr_status_free(&menu->scr);
+
+ while (1) {
+ int c = getch();
+
+ if (c == ERR)
+ return;
+
+ /* DBGS("%d (%o)\n", c, c); */
+
+ if (menu->hot_key)
+ c = menu->hot_key(menu, item, c);
+
+ switch (c) {
+ case 27: /* ESC */
+ if (menu->on_exit)
+ menu->on_exit(menu);
+ nc_flush_keys();
+ return;
+
+ case KEY_PPAGE:
+ pmenu_move_cursor(menu, REQ_SCR_UPAGE);
+ break;
+ case KEY_NPAGE:
+ pmenu_move_cursor(menu, REQ_SCR_DPAGE);
+ break;
+ case KEY_HOME:
+ pmenu_move_cursor(menu, REQ_FIRST_ITEM);
+ break;
+ case KEY_END:
+ pmenu_move_cursor(menu, REQ_LAST_ITEM);
+ break;
+ case KEY_UP:
+ pmenu_move_cursor(menu, REQ_UP_ITEM);
+ break;
+ case KEY_DOWN:
+ case '\t':
+ pmenu_move_cursor(menu, REQ_DOWN_ITEM);
+ break;
+
+ case KEY_LEFT:
+ case 'E':
+ case 'e':
+ if (item->on_edit)
+ item->on_edit(item);
+ break;
+ case '\n':
+ case '\r':
+ if (item->on_execute)
+ item->on_execute(item);
+ break;
+ default:
+ menu_driver(menu->ncm, c);
+ break;
+ }
+ }
+}
+
+/**
+ * pmenu_grow - Grow the item array.
+ * @count: The count of new items.
+ *
+ * The item array must be disconnected prior to calling pmenu_grow().
+ * Returns the insert point index.
+ */
+
+unsigned int pmenu_grow(struct pmenu *menu, unsigned int count)
+{
+ unsigned int tmp;
+
+ assert(item_count(menu->ncm) == 0 && "not disconnected");
+
+ pb_log("%s: %u current + %u new = %u\n", __func__, menu->item_count,
+ count, menu->item_count + count);
+
+ /* Note that items array has a null terminator. */
+
+ menu->items = talloc_realloc(menu, menu->items, ITEM *,
+ menu->item_count + count + 1);
+
+ memmove(menu->items + menu->insert_pt + count,
+ menu->items + menu->insert_pt,
+ (menu->item_count - menu->insert_pt + 1) * sizeof(ITEM *));
+
+ memset(menu->items + menu->insert_pt, 0, count * sizeof(ITEM *));
+
+ tmp = menu->insert_pt;
+ menu->insert_pt += count;
+ menu->item_count += count;
+
+ return tmp;
+}
+
+static int pmenu_item_get_index(const struct pmenu_item *item)
+{
+ unsigned int i;
+
+ for (i = 0; i < item->pmenu->item_count; i++)
+ if (item->pmenu->items[i] == item->nci)
+ return i;
+
+ pb_log("%s: not found: %p %s\n", __func__, item,
+ (item ? item->nci->name.str : "(null)"));
+ return -1;
+}
+
+/**
+ * pmenu_remove - Remove an item from the item array.
+ *
+ * The item array must be disconnected prior to calling pmenu_remove()
+ */
+
+int pmenu_remove(struct pmenu *menu, struct pmenu_item *item)
+{
+ int index;
+
+ assert(item_count(menu->ncm) == 0 && "not disconnected");
+
+ assert(menu->item_count);
+
+ pb_log("%s: %u\n", __func__, menu->item_count);
+
+ index = pmenu_item_get_index(item);
+
+ if (index < 0)
+ return -1;
+
+ /* Note that items array has a null terminator. */
+
+ menu->insert_pt--;
+ menu->item_count--;
+
+ memmove(&menu->items[index], &menu->items[index + 1],
+ (menu->item_count - index + 1) * sizeof(ITEM *));
+ menu->items = talloc_realloc(menu, menu->items, ITEM *,
+ menu->item_count + 1);
+
+ return 0;
+}
+
+/**
+ * pmenu_init - Allocate and initialize a new menu instance.
+ *
+ * Returns a pointer the the initialized struct pmenu instance or NULL on error.
+ * The caller is responsible for calling talloc_free() for the returned
+ * instance.
+ */
+
+struct pmenu *pmenu_init(void *ui_ctx, unsigned int item_count,
+ void (*on_exit)(struct pmenu *))
+{
+ struct pmenu *menu = talloc_zero(ui_ctx, struct pmenu);
+
+ if (!menu)
+ return NULL;
+
+ /* note items array has a null terminator */
+
+ menu->items = talloc_zero_array(menu, ITEM *, item_count + 1);
+
+ if (!menu->items) {
+ talloc_free(menu);
+ return NULL;
+ }
+
+ nc_scr_init(&menu->scr, pb_pmenu_sig, 0, ui_ctx, pmenu_process_key,
+ pmenu_post, pmenu_unpost, pmenu_resize);
+
+ menu->item_count = item_count;
+ menu->insert_pt = 0; /* insert from top */
+ menu->on_exit = on_exit;
+
+ return menu;
+}
+
+/**
+ * pmenu_setup - Create nc menu, setup nc windows.
+ *
+ */
+
+int pmenu_setup(struct pmenu *menu)
+{
+ assert(!menu->ncm);
+
+ menu->ncm = new_menu(menu->items);
+
+ if (!menu->ncm) {
+ pb_log("%s:%d: new_menu failed: %s\n", __func__, __LINE__,
+ strerror(errno));
+ return -1;
+ }
+
+ set_menu_win(menu->ncm, menu->scr.main_ncw);
+ set_menu_sub(menu->ncm, menu->scr.sub_ncw);
+
+ /* Makes menu scrollable. */
+ set_menu_format(menu->ncm, LINES - nc_scr_frame_lines, 1);
+
+ return 0;
+}
+
+/**
+ * pmenu_delete - Delete a menu instance.
+ *
+ */
+
+void pmenu_delete(struct pmenu *menu)
+{
+ unsigned int i;
+
+ assert(menu->scr.sig == pb_pmenu_sig);
+ menu->scr.sig = pb_removed_sig;
+
+ for (i = item_count(menu->ncm); i; i--)
+ free_item(menu->items[i]);
+
+ free_menu(menu->ncm);
+ delwin(menu->scr.sub_ncw);
+ delwin(menu->scr.main_ncw);
+ talloc_free(menu);
+}
diff --git a/ui/ncurses/nc-menu.h b/ui/ncurses/nc-menu.h
new file mode 100644
index 0000000..b487df9
--- /dev/null
+++ b/ui/ncurses/nc-menu.h
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2009 Sony Computer Entertainment Inc.
+ * Copyright 2009 Sony Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#if !defined(_PB_NC_MENU_H)
+#define _PB_NC_MENU_H
+
+#include <assert.h>
+#include <menu.h>
+
+#include "log/log.h"
+#include "pb-protocol/pb-protocol.h"
+#include "nc-scr.h"
+
+struct pmenu;
+
+/**
+ * struct pmenu_item - Hold the state of a single menu item.
+ * @i_sig: Signature for callback type checking, should be pmenu_item_sig.
+ * @nci: The ncurses menu item instance for this item.
+ */
+
+struct pmenu_item {
+ enum pb_nc_sig i_sig;
+ ITEM *nci;
+ struct pmenu *pmenu;
+ void *data;
+ int (*on_edit)(struct pmenu_item *item);
+ int (*on_execute)(struct pmenu_item *item);
+};
+
+struct pmenu_item *pmenu_item_alloc(struct pmenu *menu);
+struct pmenu_item *pmenu_item_setup(struct pmenu *menu, struct pmenu_item *i,
+ unsigned int index, const char *name, const char *description);
+void pmenu_item_delete(struct pmenu_item *item);
+
+static inline struct pmenu_item *pmenu_item_from_arg(void *arg)
+{
+ struct pmenu_item *item = (struct pmenu_item *)arg;
+
+ assert(item->i_sig == pb_item_sig);
+ return item;
+}
+
+static inline struct pmenu_item *pmenu_item_init(struct pmenu *menu,
+ unsigned int index, const char *name, const char *description)
+{
+ return pmenu_item_setup(menu, pmenu_item_alloc(menu), index, name,
+ description);
+}
+
+/**
+ * struct pmenu - Data structure defining complete menu.
+ * @insert_pt: Index in nc item array.
+ * @ncm: The ncurses menu instance for this menu.
+ */
+
+struct pmenu {
+ struct nc_scr scr;
+ MENU *ncm;
+ ITEM **items;
+ unsigned int item_count;
+ unsigned int insert_pt;
+ int (*hot_key)(struct pmenu *menu, struct pmenu_item *item, int c);
+ void (*on_exit)(struct pmenu *menu);
+};
+
+struct pmenu *pmenu_init(void *ui_ctx, unsigned int item_count,
+ void (*on_exit)(struct pmenu *));
+int pmenu_setup(struct pmenu *menu);
+void pmenu_delete(struct pmenu *menu);
+unsigned int pmenu_grow(struct pmenu *menu, unsigned int count);
+int pmenu_remove(struct pmenu *menu, struct pmenu_item *item);
+struct pmenu_item *pmenu_find_selected(struct pmenu *menu);
+
+/* convenience routines */
+
+int pmenu_exit_cb(struct pmenu_item *item);
+
+static inline struct pmenu *pmenu_from_scr(struct nc_scr *scr)
+{
+ struct pmenu *pmenu;
+
+ assert(scr->sig == pb_pmenu_sig);
+ pmenu = (struct pmenu *)((char *)scr
+ - (size_t)&((struct pmenu *)0)->scr);
+ assert(pmenu->scr.sig == pb_pmenu_sig);
+
+ return pmenu;
+}
+
+/* debug routines */
+
+#if defined(DEBUG)
+enum {do_debug = 1};
+#else
+enum {do_debug = 0};
+#endif
+
+static inline void pmenu_dump_item(const ITEM *item)
+{
+ if (do_debug)
+ pb_log("%p %s\n", item, (item ? item->name.str : "(null)"));
+}
+
+static inline void pmenu_dump_items(ITEM *const *items, unsigned int count)
+{
+ unsigned int i;
+
+ if (do_debug)
+ for (i = 0; i < count; i++)
+ pb_log("%u: %p %s\n", i, items[i],
+ (items[i] ? items[i]->name.str : "(null)"));
+}
+
+#endif
diff --git a/ui/ncurses/nc-scr.c b/ui/ncurses/nc-scr.c
new file mode 100644
index 0000000..3966e95
--- /dev/null
+++ b/ui/ncurses/nc-scr.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2009 Sony Computer Entertainment Inc.
+ * Copyright 2009 Sony Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <assert.h>
+#include <stdarg.h>
+
+#include "log/log.h"
+#include "talloc/talloc.h"
+
+#include "nc-scr.h"
+
+void nc_start(void)
+{
+ initscr(); /* Initialize ncurses. */
+ cbreak(); /* Disable line buffering. */
+ noecho(); /* Disable getch() echo. */
+ keypad(stdscr, TRUE); /* Enable num keypad keys. */
+ nonl(); /* Disable new-line translation. */
+ intrflush(stdscr, FALSE); /* Disable interrupt flush. */
+ curs_set(0); /* Make cursor invisible */
+ nodelay(stdscr, TRUE); /* Enable non-blocking getch() */
+ while (getch() != ERR) /* flush stdin */
+ (void)0;
+}
+
+void nc_atexit(void)
+{
+ clear();
+ refresh();
+ endwin();
+}
+
+static void nc_scr_status_clear(struct nc_scr *scr)
+{
+ mvwhline(scr->main_ncw, LINES - nc_scr_pos_status, 0, ' ', COLS);
+}
+
+static void nc_scr_status_draw(struct nc_scr *scr)
+{
+ mvwaddstr(scr->main_ncw, LINES - nc_scr_pos_status, 1,
+ scr->frame.status);
+}
+
+void nc_scr_frame_draw(struct nc_scr *scr)
+{
+ DBGS("title '%s'\n", scr->frame.title);
+ DBGS("help '%s'\n", scr->frame.help);
+ DBGS("status '%s'\n", scr->frame.status);
+
+ mvwaddstr(scr->main_ncw, nc_scr_pos_title, 1, scr->frame.title);
+ mvwhline(scr->main_ncw, nc_scr_pos_title_sep, 1, ACS_HLINE, COLS - 2);
+
+ mvwhline(scr->main_ncw, LINES - nc_scr_pos_help_sep, 1, ACS_HLINE,
+ COLS - 2);
+ mvwaddstr(scr->main_ncw, LINES - nc_scr_pos_help, 1, scr->frame.help);
+ nc_scr_status_draw(scr);
+}
+
+void nc_scr_status_free(struct nc_scr *scr)
+{
+ talloc_free(scr->frame.status);
+ scr->frame.status = NULL;
+ nc_scr_status_clear(scr);
+}
+
+/**
+ * nc_scr_status_printf - Set the text of the scr status using sprintf.
+ * @scr: The scr to opperate on.
+ * @text: The status text.
+ *
+ * The caller is reponsible for calling scr_draw() to update the display.
+ */
+
+void nc_scr_status_printf(struct nc_scr *scr, const char *format, ...)
+{
+ va_list ap;
+
+ nc_scr_status_free(scr);
+
+ va_start(ap, format);
+ scr->frame.status = talloc_vasprintf(scr, format, ap);
+ va_end(ap);
+
+ nc_scr_status_draw(scr);
+ wrefresh(scr->main_ncw);
+}
+
+int nc_scr_init(struct nc_scr *scr, enum pb_nc_sig sig, int begin_x,
+ void *ui_ctx,
+ void (*process_key)(struct nc_scr *),
+ int (*post)(struct nc_scr *),
+ int (*unpost)(struct nc_scr *),
+ void (*resize)(struct nc_scr *))
+{
+ scr->sig = sig;
+ scr->ui_ctx = ui_ctx;
+ scr->process_key = process_key;
+ scr->post = post;
+ scr->unpost = unpost;
+ scr->resize = resize;
+
+ scr->main_ncw = newwin(LINES, COLS, 0, 0);
+
+ scr->sub_ncw = derwin(scr->main_ncw,
+ LINES - nc_scr_frame_lines,
+ COLS - 1 - begin_x,
+ nc_scr_pos_sub,
+ begin_x);
+
+ assert(scr->main_ncw);
+ assert(scr->sub_ncw);
+
+ return scr->main_ncw && scr->sub_ncw;
+}
diff --git a/ui/ncurses/nc-scr.h b/ui/ncurses/nc-scr.h
new file mode 100644
index 0000000..c08fcd4
--- /dev/null
+++ b/ui/ncurses/nc-scr.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2009 Sony Computer Entertainment Inc.
+ * Copyright 2009 Sony Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#if !defined(_PB_NC_SCR_H)
+#define _PB_NC_SCR_H
+
+#include <ncurses.h>
+
+#define DBG(fmt, args...) pb_log("DBG: " fmt, ## args)
+#define DBGS(fmt, args...) \
+ pb_log("DBG:%s:%d: " fmt, __func__, __LINE__, ## args)
+
+enum pb_nc_sig {
+ pb_cui_sig = 111,
+ pb_pmenu_sig = 222,
+ pb_item_sig = 333,
+ pb_ked_sig = 444,
+ pb_removed_sig = -555,
+};
+
+void nc_start(void);
+void nc_atexit(void);
+
+static inline void nc_flush_keys(void)
+{
+ while (getch() != ERR)
+ (void)0;
+}
+
+enum nc_scr_pos {
+ nc_scr_pos_title = 0,
+ nc_scr_pos_title_sep = 1,
+ nc_scr_pos_sub = 2,
+
+ nc_scr_pos_help_sep = 3,
+ nc_scr_pos_help = 2,
+ nc_scr_pos_status = 1,
+
+ nc_scr_frame_lines = 5,
+};
+
+struct nc_frame {
+ char *title;
+ char *help;
+ char *status;
+};
+
+struct nc_scr {
+ enum pb_nc_sig sig;
+ struct nc_frame frame;
+ WINDOW *main_ncw;
+ WINDOW *sub_ncw;
+ void *ui_ctx;
+ int (*post)(struct nc_scr *scr);
+ int (*unpost)(struct nc_scr *scr);
+ void (*process_key)(struct nc_scr *scr);
+ void (*resize)(struct nc_scr *scr);
+};
+
+int nc_scr_init(struct nc_scr *scr, enum pb_nc_sig sig, int begin_x,
+ void *ui_ctx,
+ void (*process_key)(struct nc_scr *),
+ int (*post)(struct nc_scr *),
+ int (*unpost)(struct nc_scr *),
+ void (*resize)(struct nc_scr *));
+void nc_scr_status_free(struct nc_scr *scr);
+void nc_scr_status_printf(struct nc_scr *scr, const char *format, ...);
+void nc_scr_frame_draw(struct nc_scr *scr);
+
+#endif
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