static void text_screen_scroll(struct text_screen *screen, int key)
{
int win_lines = getmaxy(screen->scr.sub_ncw);
int win_cols = getmaxx(screen->scr.sub_ncw) - 1;
int delta, len, i;
if (key == KEY_UP)
delta = -1;
else if (key == KEY_DOWN)
delta = 1;
else
return;
if (screen->scroll_y + delta < 0)
return;
if (screen->scroll_y + delta + win_lines > screen->n_lines)
return;
screen->scroll_y += delta;
wscrl(screen->scr.sub_ncw, delta);
if (delta > 0) {
i = screen->scroll_y + win_lines - 1;
len = strncols(screen->lines[i]) > win_cols ? win_cols : -1;
mvwaddnstr(screen->scr.sub_ncw, win_lines - 1, 1,
screen->lines[i], len);
} else if (delta < 0) {
i = screen->scroll_y;
len = strncols(screen->lines[i]) > win_cols ? win_cols : -1;
mvwaddnstr(screen->scr.sub_ncw, 0, 1, screen->lines[i], len);
}
wrefresh(screen->scr.sub_ncw);
}
void text_screen_draw(struct text_screen *screen)
{
int max_y, max_x, i, len;
max_y = getmaxy(screen->scr.sub_ncw);
max_x = getmaxx(screen->scr.sub_ncw) - 1;
max_y = min(max_y, screen->scroll_y + screen->n_lines);
for (i = screen->scroll_y; i < max_y; i++) {
len = strncols(screen->lines[i]) > max_x ? max_x : -1;
mvwaddnstr(screen->scr.sub_ncw, i, 1, screen->lines[i], len);
}
wrefresh(screen->scr.sub_ncw);
}
struct boot_editor *boot_editor_init(struct cui *cui,
struct pmenu_item *item,
const struct system_info *sysinfo,
void (*on_exit)(struct cui *cui,
struct pmenu_item *item,
struct pb_boot_data *bd))
{
struct boot_editor *boot_editor;
boot_editor = talloc_zero(cui, struct boot_editor);
if (!boot_editor)
return NULL;
talloc_set_destructor(boot_editor, boot_editor_destructor);
boot_editor->cui = cui;
boot_editor->item = item;
boot_editor->on_exit = on_exit;
boot_editor->state = STATE_EDIT;
boot_editor->need_redraw = false;
boot_editor->need_update = false;
int ncols1 = strncols(_("Device tree:"));
int ncols2 = strncols(_("Boot arguments:"));
boot_editor->label_x = 1;
boot_editor->field_x = 2 + max(ncols1, ncols2);
nc_scr_init(&boot_editor->scr, pb_boot_editor_sig, 0,
cui, boot_editor_process_key,
boot_editor_post, boot_editor_unpost, boot_editor_resize);
boot_editor->scr.frame.ltitle = talloc_strdup(boot_editor,
_("Petitboot Option Editor"));
boot_editor->scr.frame.rtitle = NULL;
boot_editor->scr.frame.help = talloc_strdup(boot_editor,
_("tab=next, shift+tab=previous, x=exit, h=help"));
nc_scr_frame_draw(&boot_editor->scr);
if (item) {
struct pb_boot_data *bd = cod_from_item(item)->bd;
boot_editor->image = bd->image;
boot_editor->initrd = bd->initrd;
boot_editor->dtb = bd->dtb;
boot_editor->args = bd->args;
boot_editor_find_device(boot_editor, bd, sysinfo);
} else {
boot_editor->image = boot_editor->initrd =
boot_editor->dtb = boot_editor->args = "";
}
boot_editor->pad = newpad(
pad_height(sysinfo ? sysinfo->n_blockdevs : 0),
COLS);
boot_editor_setup_widgets(boot_editor, sysinfo);
boot_editor_layout_widgets(boot_editor);
wrefresh(boot_editor->scr.main_ncw);
return boot_editor;
}
