Add ncurses UI menu

[petitboot] / ui / ncurses / nc-scr.c

diff --git a/ui/ncurses/nc-scr.c b/ui/ncurses/nc-scr.c
new file mode 100644 (file)
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;
+}