Add qemu 2.4.0

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

diff --git a/qemu/roms/ipxe/src/hci/mucurses/windows.c b/qemu/roms/ipxe/src/hci/mucurses/windows.c
new file mode 100644 (file)
index 0000000..63d0af0
--- /dev/null
+++ b/qemu/roms/ipxe/src/hci/mucurses/windows.c
@@ -0,0 +1,158 @@
+#include <curses.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include "mucurses.h"
+
+/** @file
+ *
+ * MuCurses windows instance functions
+ *
+ */
+
+/**
+ * Delete a window
+ *
+ * @v *win     pointer to window being deleted
+ * @ret rc     return status code
+ */
+int delwin ( WINDOW *win ) {
+       if ( win == NULL )
+               return ERR;
+
+       /* I think we should blank the region covered by the window -
+          ncurses doesn't do this, but they have a buffer, so they
+          may just be deleting from an offscreen context whereas we
+          are guaranteed to be deleting something onscreen */
+       wmove( win, 0, 0 );
+       chtype killch = (chtype)' ';
+       do {
+               _wputch( win, killch, WRAP );
+       } while ( win->curs_x + win->curs_y );
+
+       free( win );
+
+       wmove ( stdscr, 0, 0 );
+
+       return OK;
+}
+
+/**
+ * Create a new derived window
+ *
+ * @v parent   parent window
+ * @v nlines   window height
+ * @v ncols    window width
+ * @v begin_y  window y origin (relative to parent)
+ * @v begin_x  window x origin (relative to parent)
+ * @ret ptr    return pointer to child window
+ */
+WINDOW *derwin ( WINDOW *parent, int nlines, int ncols,
+                                int begin_y, int begin_x ) {
+       WINDOW *child;
+       if ( parent == NULL )
+               return NULL;
+       if ( ( child = malloc( sizeof( WINDOW ) ) ) == NULL )
+               return NULL;
+       if ( ( (unsigned)ncols > parent->width ) || 
+            ( (unsigned)nlines > parent->height ) )
+               return NULL;
+       child->ori_y = parent->ori_y + begin_y;
+       child->ori_x = parent->ori_x + begin_x;
+       child->height = nlines;
+       child->width = ncols;
+       child->parent = parent;
+       child->scr = parent->scr;
+       return child;
+}
+
+/**
+ * Create a duplicate of the specified window
+ *
+ * @v orig     original window
+ * @ret ptr    pointer to duplicate window
+ */
+WINDOW *dupwin ( WINDOW *orig ) {
+       WINDOW *copy;
+       if ( orig == NULL )
+               return NULL;
+       if ( ( copy = malloc( sizeof( WINDOW ) ) ) == NULL )
+               return NULL;
+       copy->scr = orig->scr;
+       copy->attrs = orig->attrs;
+       copy->ori_y = orig->ori_y;
+       copy->ori_x = orig->ori_x;
+       copy->curs_y = orig->curs_y;
+       copy->curs_x = orig->curs_x;
+       copy->height = orig->height;
+       copy->width = orig->width;
+       return copy;
+}
+
+/**
+ * Move window origin to specified coordinates
+ *
+ * @v *win     window to move
+ * @v y                Y position
+ * @v x                X position
+ * @ret rc     return status code
+ */
+int mvwin ( WINDOW *win, int y, int x ) {
+       if ( win == NULL )
+               return ERR;
+       if ( ( ( (unsigned)y + win->height ) > LINES ) ||
+            ( ( (unsigned)x + win->width ) > COLS ) )
+               return ERR;
+
+       win->ori_y = y;
+       win->ori_x = x;
+
+       return OK;
+}
+
+/**
+ * Create new WINDOW
+ *
+ * @v nlines   number of lines
+ * @v ncols    number of columns
+ * @v begin_y  column origin
+ * @v begin_x  line origin
+ * @ret *win   return pointer to new window
+ */
+WINDOW *newwin ( int nlines, int ncols, int begin_y, int begin_x ) {
+       WINDOW *win;
+       if ( ( win = malloc( sizeof(WINDOW) ) ) == NULL )
+               return NULL;
+       if ( ( (unsigned)( begin_y + nlines ) > stdscr->height ) &&
+            ( (unsigned)( begin_x + ncols ) > stdscr->width ) )
+               return NULL;
+       win->ori_y = begin_y;
+       win->ori_x = begin_x;
+       win->height = nlines;
+       win->width = ncols;
+       win->scr = stdscr->scr;
+       win->parent = stdscr;
+       return win;
+}
+
+/**
+ * Create a new sub-window
+ *
+ * @v orig     parent window
+ * @v nlines   window height
+ * @v ncols    window width
+ * @v begin_y  window y origin (absolute)
+ * @v begin_x  window x origin (absolute)
+ * @ret ptr    return pointer to child window
+ */
+WINDOW *subwin ( WINDOW *parent, int nlines, int ncols,
+                                int begin_y, int begin_x ) {
+       WINDOW *child;
+       if ( parent == NULL )
+               return NULL;
+       if ( ( child = malloc( sizeof( WINDOW ) ) ) == NULL )
+               return NULL;
+       child = newwin( nlines, ncols, begin_y, begin_x );
+       child->parent = parent;
+       child->scr = parent->scr;
+       return child;
+}