# Copypaste it to your ~/.config/sway/config

set $TBALL 1149:4128:Kensington______Kensington_Expert_Mouse

# Turns on scrolling with the ball when right bottom button pressed.
input $TBALL {
      scroll_method on_button_down
      scroll_button 273
}

# Remapping swaps upper and bottom rows of the buttons.
# By default buttons work this way:
# MIDDLE    SIDE
#      BALL
# LEFT      RIGHT
#
# After remapping it could be used as:
# LEFT      RIGHT
#      BALL
# MIDDLE    RIGHT
bindsym --input-device=1149:4128:Kensington______Kensington_Expert_Mouse --whole-window BTN_LEFT seat seat0 cursor press BTN_MIDDLE; seat seat0 cursor release BTN_MIDDLE
bindsym --input-device=1149:4128:Kensington______Kensington_Expert_Mouse --whole-window BTN_MIDDLE seat seat0 cursor press BTN_LEFT; seat seat0 cursor release BTN_LEFT
bindsym --input-device=1149:4128:Kensington______Kensington_Expert_Mouse --whole-window BTN_SIDE seat seat0 cursor press BTN_RIGHT; seat seat0 cursor release BTN_RIGHT
bindsym --input-device=1149:4128:Kensington______Kensington_Expert_Mouse --whole-window BTN_RIGHT seat seat0 cursor press BTN_SIDE; seat seat0 cursor release BTN_SIDE