vte: support cursor positioning CSI

Most of the CSIs for cursor movement are already implemented but HVP and
CUP are missing. This adds both CSI handlers to the VTE layer.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

diff --git a/src/vte.c b/src/vte.c
index 6420e78..e05ea99 100644 (file)
--- a/src/vte.c
+++ b/src/vte.c
@@ -963,36 +963,51 @@ static void csi_mode(struct kmscon_vte *vte, bool set)
 
 static void do_csi(struct kmscon_vte *vte, uint32_t data)
 {
-       int num;
+       int num, x, y;
 
        if (vte->csi_argc < CSI_ARG_MAX)
                vte->csi_argc++;
 
        switch (data) {
-       case 'A':
+       case 'A': /* CUU */
+               /* move cursor up */
                num = vte->csi_argv[0];
                if (num <= 0)
                        num = 1;
                kmscon_console_move_up(vte->con, num, false);
                break;
-       case 'B':
+       case 'B': /* CUD */
+               /* move cursor down */
                num = vte->csi_argv[0];
                if (num <= 0)
                        num = 1;
                kmscon_console_move_down(vte->con, num, false);
                break;
-       case 'C':
+       case 'C': /* CUF */
+               /* move cursor forward */
                num = vte->csi_argv[0];
                if (num <= 0)
                        num = 1;
                kmscon_console_move_right(vte->con, num);
                break;
-       case 'D':
+       case 'D': /* CUB */
+               /* move cursor backward */
                num = vte->csi_argv[0];
                if (num <= 0)
                        num = 1;
                kmscon_console_move_left(vte->con, num);
                break;
+       case 'H': /* CUP */
+       case 'f': /* HVP */
+               /* position cursor */
+               x = vte->csi_argv[0];
+               if (x <= 0)
+                       x = 1;
+               y = vte->csi_argv[1];
+               if (y <= 0)
+                       y = 1;
+               kmscon_console_move_to(vte->con, x - 1, y - 1);
+               break;
        case 'J':
                if (vte->csi_argv[0] <= 0)
                        kmscon_console_erase_cursor_to_screen(vte->con);