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authordzwdz2023-08-14 18:51:07 +0200
committerdzwdz2023-08-14 18:51:07 +0200
commit642b5fb0007b64c77d186fcb018d571152ee1d47 (patch)
tree1c466461f3602d306be309a053edae558ef2568e /src/cmd/vterm/draw.c
parent8050069c57b729c18c19b1a03ab6e4bf63b4735e (diff)
reorganization: first steps
Diffstat (limited to 'src/cmd/vterm/draw.c')
-rw-r--r--src/cmd/vterm/draw.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/cmd/vterm/draw.c b/src/cmd/vterm/draw.c
new file mode 100644
index 0000000..ee36a0f
--- /dev/null
+++ b/src/cmd/vterm/draw.c
@@ -0,0 +1,17 @@
+#include "vterm.h"
+#include <camellia/execbuf.h>
+#include <camellia/syscalls.h>
+#include <string.h>
+
+struct framebuf fb;
+struct rect dirty;
+
+void scroll(void) {
+ size_t row_len = fb.pitch * font.h;
+ memmove(fb.b, fb.b + row_len, fb.len - row_len);
+ memset(fb.b + fb.len - row_len, 0, row_len);
+ cursor.y--;
+
+ dirty.x1 = 0; dirty.y1 = 0;
+ dirty.x2 = ~0; dirty.y2 = ~0;
+}