dotfiles/tmux/tmux.conf

# General Settings ==================================================
# Ctrl-space as prefix
unbind-key C-b
unbind-key C-Space
set-option -g prefix C-Space
bind-key C-Space send-prefix

set -s copy-command 'wl-copy'
set -g mouse on

# vi keybinds in copy mode
set-window-option -g mode-keys vi
set -g mode-keys vi
set-option -s set-clipboard off

# Start window index at 1, for chromium-like tab switching
set -g base-index 1

# 100k line scrollback
set-option -g history-limit 100000

# Avoid ESC delay
set -s escape-time 0

# Full colors
set -g default-terminal "xterm-256color"  # 'xterm' not 'tmux' for vim's sake
set -ag terminal-overrides ",*256*:RGB"

# Window and Panes ==================================================
# Fast Alt-bound keybinds
  # Adjacent windows
bind-key -n M-l next
bind-key -n M-h prev

  # Move between panes. Mix of vim up/down and vimium's tabs left/right
bind-key -n M-k select-pane -t '{top-right}'
bind-key -n M-j select-pane -t '{bottom-left}'

  # Move windows
bind-key -n M-[ swap-window -t -1 \; prev
bind-key -n M-] swap-window -t +1 \; next

  # Goto window, like chromium tabs
bind-key -n M-1 select-window -t 1
bind-key -n M-2 select-window -t 2
bind-key -n M-3 select-window -t 3
bind-key -n M-4 select-window -t 4
bind-key -n M-5 select-window -t 5
bind-key -n M-6 select-window -t 6
bind-key -n M-7 select-window -t 7
bind-key -n M-8 select-window -t '{end}'

# Slower prefix-bound keybinds
  # Move between panes
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

  # Resize panes
bind -r C-h resize-pane -L
bind -r C-j resize-pane -D
bind -r C-k resize-pane -U
bind -r C-l resize-pane -R

  # Swap panes
bind-key L swap-pane -s '{right-of}'
bind-key K swap-pane -s '{up-of}'
bind-key J swap-pane -s '{down-of}'
bind-key H swap-pane -s '{left-of}'

  # Split panes like vim
bind v split-window -h -c '#{pane_current_path}'
bind s split-window -v -c '#{pane_current_path}'
bind T new-window -c "#{pane_current_path}"

  # Move current pane between windows
bind-key g command-prompt -p "grab pane from:"  "join-pane -s '%%'"
bind-key m command-prompt -p "move pane to:"  "join-pane -t '%%'"

  # Pop out current pane into a new window
bind-key p break-pane -t :

  # Toggle pane synchronization
bind-key C-s setw synchronize-panes

  # Switch sessions with ( )
bind-key -n M-0 switch-client -n
bind-key -n M-9 switch-client -p

# Tmux Keybinds =====================================================
# Reload tmux quickly
unbind R
bind R source-file ~/.config/tmux/tmux.conf \; display 'Reloaded tmux config'

# Faster command prompt
bind ';' command-prompt -I ""

# F12 toggles the outer tmux session's key interception. Keys get passed
# through to the inner session
bind -T root F12  \
  set prefix None \;\
  set key-table off \;\
  if -F '#{pane_in_mode}' 'send-keys -X cancel' \;\
  set status-position top \;\
  refresh-client -S

bind -T off F12 \
  set -u prefix C-Space \;\
  set -u key-table \;\
  set status-position bottom \;\
  refresh-client -S

# Copy mode keybinds
  # Move to line ends
bind-key -T copy-mode-vi 'L' send-keys '$'
bind-key -T copy-mode-vi 'H' send-keys '^'

  # Navigate to previous command prompt
bind-key b copy-mode\;\
    send-keys -X start-of-line\;\
    send-keys -X search-backward " "

  # Copy mode selection
bind P paste-buffer
bind-key -T copy-mode-vi v send-keys -X begin-selection
bind-key -T copy-mode-vi C-v send-keys -X rectangle-toggle
bind-key -T copy-mode-vi C-k send-keys -X cancel

  # Copy via mouse selection or y key
bind-key -T copy-mode-vi y send-keys -X copy-pipe 'wl-copy'
bind-key -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe 'wl-copy'

# Statusline ========================================================
set-option -g status-position bottom
set -g status-left-length 32

set -g status-bg "black"
set -g status-fg "grey"

set-option -g status-left "#[fg=yellow, bg=black bold] #H "

set-window-option -g window-status-current-format "\
#[fg=black, bg=green] #I* \
#[fg=black, bg=green bold] #W \
#[fg=green, bg=black]"

set-window-option -g window-status-format "\
#[fg=black, bg=grey]\
#[fg=black, bg=grey] #I  #W \
#[fg=grey, bg=black]"

set-option -g status-right "\
#[fg=yellow, bg=black] #S  #(whoami) \
#[fg=black, bg=yellow] #(uname -s) "

set-window-option -g window-status-separator ''

# Plugins ===========================================================
set -g @plugin 'nhdaly/tmux-better-mouse-mode'

set -g @scroll-speed-num-lines-per-scroll "1"
set -g @emulate-scroll-for-no-mouse-alternate-buffer "on"  # Scroll manpages
set -g @plugin 'mattdavis90/base16-tmux'

set -g @colors-base16 'gruvbox-light-soft'

run '~/.config/tmux/plugins/tpm/tpm'

# Overwriting options ===============================================
set -g pane-active-border-style "fg=white"
set -g pane-border-style "fg=brightblack"