.tmux.conf

# Github: https://github.com/Karmenzind/dotfiles-and-scripts

# simply do:
# wget https://raw.githubusercontent.com/Karmenzind/dotfiles-and-scripts/master/home_k/.tmux.conf -O ~/.tmux.conf

# --------------------------------------------
# Basic
# --------------------------------------------

set -g history-limit 5000

# change prefix
set -g prefix C-a
bind C-a send-prefix
unbind C-b

set -g default-terminal "tmux-256color"
# set -ga terminal-overrides ",xterm-256color:Tc"
set -ga terminal-overrides ",xterm-256color:RGB"

# fix: tmux pane separators dashed rather than continuous lines
set -as terminal-overrides ",*:U8=0"
# set -g default-terminal "${TERM}"
set -as terminal-overrides ',*:Smulx=\E[4::%p1%dm'  # undercurl support
set -as terminal-overrides ',*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'  # underscore colours - needs tmux-3.0

setw -g automatic-rename off

# /* status line */
set -g status-keys vi
set -g status-interval 2
set -g status-position bottom

# status line's colors
# set -g status-style fg=white,bold,bg=black
set -g status-style bg=default,fg=cyan

# window list colors
setw -g window-status-style fg=colour12
setw -g window-status-current-style fg=white,bg=red,bold,underscore

# set -g set-titles on
# set -g set-titles-string '#h ❐ #S ● #I #W'
set -g status-right "#[fg=cyan,bold] #S #I:#P ❐ #[default] @#(hostname -i | awk '{print $1}') "

%if '#{==:#{DISPLAY},}'  # no x server
    set -g status-left "#{prefix_highlight} #[fg=cyan]ﯲ #{download_speed}#[default] #[fg=black,reverse]#{cpu_bg_color} #{cpu_icon} #{cpu_percentage} #[default] #[bold] %R" 
%else
    set -g status-left "#{prefix_highlight} " 
%endif
set -g status-justify centre

# /* panes */
# pane border
set -g pane-border-status bottom
set -g pane-border-format "#{pane_index} #{pane_current_command}"
setw -g pane-border-style fg=colour240
setw -g pane-active-border-style fg=colour14,bold

# pane movement
bind-key C-t command-prompt -p "send pane to:" "join-pane -t ':%%'"

# /* windows */
# active pane normal, other shaded out
# setw -g window-style fg=colour240 # ,bg=colour235
# setw -g window-active-style fg=white # ,bg=black

# /* cmd line */
# Command / message line
set -g message-style fg=white,bold

# /* others */

# enable activity alerts
setw -g monitor-activity on
set -g visual-activity off

# Use mouse
set -g mouse on
bind-key M set-option -g mouse \; display "[Toggled] Mouse: #{?mouse,ON,OFF}"

# --------------------------------------------
# Copy mode
# --------------------------------------------

bind / copy-mode \; send-keys /
bind C-b copy-mode \; send-keys C-b

bind Escape copy-mode
bind-key -T copy-mode-vi 'v' send -X begin-selection
unbind p

# [ X clipboard integration ]
# 0. y and p as in vim (no system clipboard access)
# bind-key -T copy-mode-vi 'y' send -X copy-selection
# bind p paste-buffer
# 1. Emacs style with xsel
# bind-key -T copy-mode y send-keys -X copy-pipe-and-cancel "xsel -i -p && xsel -o -p | xsel -i -b"
# bind-key C-y run "xsel -o | tmux load-buffer - ; tmux paste-buffer"
# 2. Vim style with xsel
# bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "xsel -i -p && xsel -o -p | xsel -i -b"
# bind-key p run "xsel -o | tmux load-buffer - ; tmux paste-buffer"
# 3. Vim style with xclip
# bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "xclip -i -sel clip > /dev/null"
# bind-key p run "xclip -o -sel clip | tmux load-buffer - ; tmux paste-buffer"
# 4. Vim style in WSL
# bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "clip.exe"
# bind p paste-buffer

%if '#{==:#{DISPLAY},}'  # no x server
    bind-key -T copy-mode-vi 'y' send -X copy-selection
%else
    bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "xsel -i -p && xsel -o -p | xsel -i -b"
    # set -s copy-command 'xsel -i'
    bind-key p run "xsel -o | tmux load-buffer - ; tmux paste-buffer"
%endif

# others
bind-key -T copy-mode-vi 'Space' send -X halfpage-down
bind-key -T copy-mode-vi 'Bspace' send -X halfpage-up

# --------------------------------------------
# Vim friendly
# --------------------------------------------

set -g mode-keys vi

set -sg escape-time 1
set -g base-index 0
setw -g pane-base-index 0

# easy-to-remember split pane commands
# bind | split-window -h
# bind - split-window -v
# unbind '"'
# unbind %

# moving between panes with vim movement keys
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# moving between windows with vim movement keys
bind -r C-h select-window -t :-
bind -r C-l select-window -t :+

# resize panes with vim movement keys
bind -r H resize-pane -L 2
bind -r J resize-pane -D 2
bind -r K resize-pane -U 2
bind -r L resize-pane -R 2

# --------------------------------------------
# Others
# --------------------------------------------

bind-key R source-file ~/.tmux.conf \; display-message "source-file done"

# shortcut for synchronize-panes toggle
# bind C-s set-window-option synchronize-panes
bind C-s set-window-option synchronize-panes # \; display-message "synchronize-panes is now #{?pane_synchronized,ON,OFF}"

# split pane and retain the current directory of existing pane
bind _ split-window -v -c "#{pane_current_path}"
bind | split-window -h -c "#{pane_current_path}"
bind - split-window -v -c "#{pane_current_path}"
bind \\ split-window -h -c "#{pane_current_path}"

# /* copied from on-my-tmux */
# general
set -s escape-time 10                     # faster command sequences
set -sg repeat-time 600                   # increase repeat timeout
set -s focus-events on
# set -q -g status-utf8 on                  # expect UTF-8 (tmux < 2.2)
setw -q -g utf8 on

# edit configuration
bind e new-window -n '~/.tmux.conf' "sh -c '\${EDITOR:-vim} ~/.tmux.conf && tmux source ~/.tmux.conf && tmux display \"~/.tmux.conf sourced\"'"

# display
set -g display-panes-time 800 # slightly longer pane indicators display time
set -g display-time 1000      # slightly longer status messages display time

# --------------------------------------------
# Plugins
# --------------------------------------------

set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-sensible'
set -g @plugin 'tmux-plugins/tmux-prefix-highlight'
# set -g @plugin 'tmux-plugins/tmux-copycat'
# set -g @plugin 'tmux-plugins/tmux-urlview'
# set -g @plugin 'tmux-plugins/tmux-mode-indicator'
# set -g @plugin 'tmux-plugins/tmux-open'
# set -g @plugin 'schasse/tmux-jump'

# set -g @plugin 'ChanderG/tmux-notify'  # TODO (k): <2022-10-28> 

%if '#{==:#{DISPLAY},}'  # no x server
    set -g @plugin 'tmux-plugins/tmux-net-speed'
    set -g @plugin 'tmux-plugins/tmux-cpu'
%endif

# /* prefix highlight */
set -g @prefix_highlight_show_copy_mode 'on'
set -g @prefix_highlight_copy_mode_attr 'fg=black,bg=yellow,bold' # default is 'fg=default,bg=yellow'
set -g @prefix_highlight_output_prefix ''
set -g @prefix_highlight_output_suffix ''
set -g @prefix_highlight_show_sync_mode 'on'
set -g @prefix_highlight_sync_mode_attr 'fg=black,bg=white' # default is 'fg=default,bg=yellow'

# /* net speed */
# set -g @net_speed_interfaces "enp0s31f6"
# set -g @download_speed_format "%8s"
# set -g @upload_speed_format "%10s"
# set -g @net_speed_format "D:%10s U:%10s"

if-shell -b 'test -f ~/.tmux.conf.local' 'source-file ~/.tmux.conf.local'

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
run 'test -f ~/.tmux/plugins/tpm/tpm && ~/.tmux/plugins/tpm/tpm'