Add examples how to use the terminal emulation code in /boot/loader to

create nice startup menus. Improvements are warmly welcome. :-)

1 files changed, 36 insertions, 0 deletions

diff --git a/share/examples/bootforth/screen.4th b/share/examples/bootforth/screen.4th
new file mode 100644
index 0000000..4b0a01e
--- /dev/null
+++ b/share/examples/bootforth/screen.4th
@@ -0,0 +1,36 @@
+\ Screen manipulation related words.
+\ $Id$
+
+marker task-screen.4th
+
+: escc	( -- )	\ emit Esc-[
+	91 27 emit emit
+;
+
+: ho	( -- )	\ Home cursor
+	escc 72 emit	\ Esc-[H
+;
+
+: cld	( -- )	\ Clear from current position to end of display
+	escc 74 emit	\ Esc-[J
+;
+
+: clear	( -- )	\ clear screen
+	ho cld
+;
+
+: at-xy	( x y -- )	\ move cursor to x rows, y cols (1-based coords)
+	escc .# 59 emit .# 72 emit	\ Esc-[%d;%dH
+;
+
+: fg	( x -- )	\ Set foreground color
+	escc 3 .# .# 109 emit	\ Esc-[3%dm
+;
+
+: bg	( x -- )	\ Set background color
+	escc 4 .# .# 109 emit	\ Esc-[4%dm
+;
+
+: me	( -- )	\ Mode end (clear attributes)
+	escc 109 emit
+;