* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
*/
-FILE_LICENCE ( GPL2_OR_LATER );
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** @file
*
#include <ipxe/timer.h>
#include <ipxe/console.h>
#include <ipxe/ansicol.h>
+#include <ipxe/jumpscroll.h>
#include <ipxe/menu.h>
/* Screen layout */
struct menu_ui {
/** Menu */
struct menu *menu;
- /** Number of menu items */
- unsigned int count;
- /** Currently selected item */
- int selected;
- /** First visible item */
- int first_visible;
+ /** Jump scroller */
+ struct jump_scroller scroll;
/** Timeout (0=indefinite) */
unsigned long timeout;
};
* @v ui Menu user interface
* @v index Index
*/
-static void draw_menu_item ( struct menu_ui *ui, int index ) {
+static void draw_menu_item ( struct menu_ui *ui, unsigned int index ) {
struct menu_item *item;
unsigned int row_offset;
char buf[ MENU_COLS + 1 /* NUL */ ];
size_t len;
/* Move to start of row */
- row_offset = ( index - ui->first_visible );
+ row_offset = ( index - ui->scroll.first );
move ( ( MENU_ROW + row_offset ), MENU_COL );
/* Get menu item */
color_set ( CPAIR_SEPARATOR, NULL );
/* Highlight if this is the selected item */
- if ( index == ui->selected ) {
+ if ( index == ui->scroll.current ) {
color_set ( CPAIR_SELECT, NULL );
attron ( A_BOLD );
}
snprintf ( timeout_buf, sizeof ( timeout_buf ), "(%ld)",
( ( ui->timeout + TICKS_PER_SEC - 1 ) /
TICKS_PER_SEC ) );
- if ( ( index == ui->selected ) && ( ui->timeout != 0 ) ) {
+ if ( ( index == ui->scroll.current ) && ( ui->timeout != 0 ) ) {
memcpy ( ( buf + MENU_COLS - MENU_PAD - timeout_len ),
timeout_buf, timeout_len );
}
static void draw_menu_items ( struct menu_ui *ui ) {
unsigned int i;
- /* Jump scroll to correct point in list */
- while ( ui->first_visible < ui->selected )
- ui->first_visible += MENU_ROWS;
- while ( ui->first_visible > ui->selected )
- ui->first_visible -= MENU_ROWS;
-
/* Draw ellipses before and/or after the list as necessary */
color_set ( CPAIR_SEPARATOR, NULL );
mvaddstr ( ( MENU_ROW - 1 ), ( MENU_COL + MENU_PAD ),
- ( ( ui->first_visible > 0 ) ? "..." : " " ) );
+ ( jump_scroll_is_first ( &ui->scroll ) ? " " : "..." ) );
mvaddstr ( ( MENU_ROW + MENU_ROWS ), ( MENU_COL + MENU_PAD ),
- ( ( ( ui->first_visible + MENU_ROWS ) < ui->count ) ?
- "..." : " " ) );
+ ( jump_scroll_is_last ( &ui->scroll ) ? " " : "..." ) );
color_set ( CPAIR_NORMAL, NULL );
/* Draw visible items */
for ( i = 0 ; i < MENU_ROWS ; i++ )
- draw_menu_item ( ui, ( ui->first_visible + i ) );
+ draw_menu_item ( ui, ( ui->scroll.first + i ) );
}
/**
static int menu_loop ( struct menu_ui *ui, struct menu_item **selected ) {
struct menu_item *item;
unsigned long timeout;
- unsigned int delta;
- int current;
+ unsigned int previous;
int key;
int i;
int move;
do {
/* Record current selection */
- current = ui->selected;
+ previous = ui->scroll.current;
/* Calculate timeout as remainder of current second */
timeout = ( ui->timeout % TICKS_PER_SEC );
/* Cancel any timeout */
ui->timeout = 0;
- /* Handle key */
+ /* Handle scroll keys */
+ move = jump_scroll_key ( &ui->scroll, key );
+
+ /* Handle other keys */
switch ( key ) {
- case KEY_UP:
- move = -1;
- break;
- case KEY_DOWN:
- move = +1;
- break;
- case KEY_PPAGE:
- move = ( ui->first_visible - ui->selected - 1 );
- break;
- case KEY_NPAGE:
- move = ( ui->first_visible - ui->selected
- + MENU_ROWS );
- break;
- case KEY_HOME:
- move = -ui->count;
- break;
- case KEY_END:
- move = +ui->count;
- break;
case ESC:
case CTRL_C:
rc = -ECANCELED;
i++;
continue;
}
- ui->selected = i;
+ ui->scroll.current = i;
if ( item->label ) {
chosen = 1;
} else {
/* Move selection, if applicable */
while ( move ) {
- ui->selected += move;
- if ( ui->selected < 0 ) {
- ui->selected = 0;
- move = +1;
- } else if ( ui->selected >= ( int ) ui->count ) {
- ui->selected = ( ui->count - 1 );
- move = -1;
- }
- item = menu_item ( ui->menu, ui->selected );
+ move = jump_scroll_move ( &ui->scroll, move );
+ item = menu_item ( ui->menu, ui->scroll.current );
if ( item->label )
break;
- move = ( ( move > 0 ) ? +1 : -1 );
}
/* Redraw selection if necessary */
- if ( ( ui->selected != current ) || ( timeout != 0 ) ) {
- draw_menu_item ( ui, current );
- delta = ( ui->selected - ui->first_visible );
- if ( delta >= MENU_ROWS )
+ if ( ( ui->scroll.current != previous ) || ( timeout != 0 ) ) {
+ draw_menu_item ( ui, previous );
+ if ( jump_scroll ( &ui->scroll ) )
draw_menu_items ( ui );
- draw_menu_item ( ui, ui->selected );
+ draw_menu_item ( ui, ui->scroll.current );
}
/* Record selection */
- item = menu_item ( ui->menu, ui->selected );
+ item = menu_item ( ui->menu, ui->scroll.current );
assert ( item != NULL );
assert ( item->label != NULL );
*selected = item;
/* Initialise UI */
memset ( &ui, 0, sizeof ( ui ) );
ui.menu = menu;
+ ui.scroll.rows = MENU_ROWS;
ui.timeout = timeout;
list_for_each_entry ( item, &menu->items, list ) {
if ( item->label ) {
if ( ! labelled_count )
- ui.selected = ui.count;
+ ui.scroll.current = ui.scroll.count;
labelled_count++;
if ( select ) {
if ( strcmp ( select, item->label ) == 0 )
- ui.selected = ui.count;
+ ui.scroll.current = ui.scroll.count;
} else {
if ( item->is_default )
- ui.selected = ui.count;
+ ui.scroll.current = ui.scroll.count;
}
}
- ui.count++;
+ ui.scroll.count++;
}
if ( ! labelled_count ) {
/* Menus with no labelled items cannot be selected
snprintf ( buf, sizeof ( buf ), "%s", ui.menu->title );
mvprintw ( TITLE_ROW, ( ( COLS - strlen ( buf ) ) / 2 ), "%s", buf );
attroff ( A_BOLD );
+ jump_scroll ( &ui.scroll );
draw_menu_items ( &ui );
- draw_menu_item ( &ui, ui.selected );
+ draw_menu_item ( &ui, ui.scroll.current );
/* Enter main loop */
rc = menu_loop ( &ui, selected );
Code Review / kvmfornfv.git / blobdiff