Mouse wheel not working in VT200 mouse mode

[mierenhoop]

Hi,

Mouse wheel scrolling works in neovim, which goes in TSM_VTE_MOUSE_MODE_SGR. However when entering tmux or vim, it does not work. I've confirmed they enter TSM_VTE_MOUSE_MODE_VT200.

Adding the same piece of code for translating the mouse button enum to 64/65 fixed the problem:

diff --git a/src/tsm/tsm-vte.c b/src/tsm/tsm-vte.c
index 120ca65..d3b2df7 100644
--- a/src/tsm/tsm-vte.c
+++ b/src/tsm/tsm-vte.c
@@ -3404,6 +3404,12 @@ bool tsm_vte_handle_mouse(struct tsm_vte *vte, unsigned int cell_x,
                        cell_y = 0xff;
                }

+               if (button == TSM_MOUSE_BUTTON_WHEEL_UP) {
+                       button = 64;
+               } else if (button == TSM_MOUSE_BUTTON_WHEEL_DOWN) {
+                       button = 65;
+               }
+
                if (event & TSM_MOUSE_EVENT_RELEASED) {
                        /* translates to released but the information which key is
                         * released gets lost by design of this encoding scheme */

[kdj0c]

Thanks for opening this issue.
You're probably right, so feel free to open a PR, or I will do it tomorrow.