Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / hci / mucurses / widgets / editbox.c

diff --git a/qemu/roms/ipxe/src/hci/mucurses/widgets/editbox.c b/qemu/roms/ipxe/src/hci/mucurses/widgets/editbox.c
new file mode 100644 (file)
index 0000000..630a66e
--- /dev/null
+++ b/qemu/roms/ipxe/src/hci/mucurses/widgets/editbox.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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; either version 2 of the
+ * License, or any later version.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <string.h>
+#include <assert.h>
+#include <ipxe/editbox.h>
+
+/** @file
+ *
+ * Editable text box widget
+ *
+ */
+
+#define EDITBOX_MIN_CHARS 3
+
+/**
+ * Initialise text box widget
+ *
+ * @v box              Editable text box widget
+ * @v buf              Text buffer
+ * @v len              Size of text buffer
+ * @v win              Containing window
+ * @v row              Row
+ * @v col              Starting column
+ * @v width            Width
+ * @v flags            Flags
+ */
+void init_editbox ( struct edit_box *box, char *buf, size_t len,
+                   WINDOW *win, unsigned int row, unsigned int col,
+                   unsigned int width, unsigned int flags ) {
+       memset ( box, 0, sizeof ( *box ) );
+       init_editstring ( &box->string, buf, len );
+       box->string.cursor = strlen ( buf );
+       box->win = ( win ? win : stdscr );
+       box->row = row;
+       box->col = col;
+       box->width = width;
+       box->flags = flags;
+}
+
+/**
+ * Draw text box widget
+ *
+ * @v box              Editable text box widget
+ *
+ */
+void draw_editbox ( struct edit_box *box ) {
+       size_t width = box->width;
+       char buf[ width + 1 ];
+       signed int cursor_offset, underflow, overflow, first;
+       size_t len;
+
+       /* Adjust starting offset so that cursor remains within box */
+       cursor_offset = ( box->string.cursor - box->first );
+       underflow = ( EDITBOX_MIN_CHARS - cursor_offset );
+       overflow = ( cursor_offset - ( width - 1 ) );
+       first = box->first;
+       if ( underflow > 0 ) {
+               first -= underflow;
+               if ( first < 0 )
+                       first = 0;
+       } else if ( overflow > 0 ) {
+               first += overflow;
+       }
+       box->first = first;
+       cursor_offset = ( box->string.cursor - first );
+
+       /* Construct underscore-padded string portion */
+       memset ( buf, '_', width );
+       buf[width] = '\0';
+       len = ( strlen ( box->string.buf ) - first );
+       if ( len > width )
+               len = width;
+       if ( box->flags & EDITBOX_STARS ) {
+               memset ( buf, '*', len );
+       } else {
+               memcpy ( buf, ( box->string.buf + first ), len );
+       }
+
+       /* Print box content and move cursor */
+       if ( ! box->win )
+               box->win = stdscr;
+       mvwprintw ( box->win, box->row, box->col, "%s", buf );
+       wmove ( box->win, box->row, ( box->col + cursor_offset ) );
+}