.tmux.conf

# Set colors
# https://github.com/neovim/neovim/wiki/FAQ#colors-arent-displayed-correctly
set -g default-terminal "xterm-256color"

# Fix colors
# https://stackoverflow.com/a/60313682/3112403
set-option -ga terminal-overrides ",xterm-256color:Tc"

# Change prefix key to C-a, easier to type, same to "screen"
unbind C-b
set -g prefix C-a

# increase time allowed to repeat commands 
set -g repeat-time 1500 # default 500

# Enable mouse support
set -g mouse on

# fix delay in exiting insert mode in neovim
# https://github.com/neovim/neovim/wiki/FAQ#esc-in-tmux-or-gnu-screen-is-delayed
set -sg escape-time 10

# Increase scrollback buffer size from 2000 to 50000 lines
set -g history-limit 50000

# Increase tmux messages display duration from 750ms to 4s
set -g display-time 4000

# Refresh 'status-left' and 'status-right' more often, from every 15s to 5s
set -g status-interval 5

# Focus events enabled for terminals that support them
set -g focus-events on

# Super useful when using "grouped sessions" and multi-monitor setup
setw -g aggressive-resize on

# Reload tmux config with Prefix + r
bind r source-file ~/.tmux.conf \; display "Reloaded tmux config"

# select next window
unbind n
bind -r C-] next-window

# select previous window
unbind p
bind -r C-[ previous-window

# vi style keybindings
setw -g mode-keys vi
bind-key h select-pane -L
bind-key j select-pane -D
bind-key k select-pane -U
bind-key l select-pane -R

# bind "v" to enter visual mode, matching vim
bind -T copy-mode-vi v send -X begin-selection

# bind "y" to yank (i.e., copy), matching vim
bind -T copy-mode-vi y send-keys -X copy-pipe "pbcopy"

# allow copying text highlighted with the mouse
bind -T copy-mode-vi MouseDragEnd1Pane send-keys -X copy-pipe "pbcopy"

# setup tmux vim-tmux-navigator
# See: https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|l?n?vim?x?)(diff)?$'"
bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h' 'select-pane -L'
bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j' 'select-pane -D'
bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k' 'select-pane -U'
bind-key -n 'C-l' if-shell "$is_vim" 'send-keys C-l' 'select-pane -R'

bind-key -T copy-mode-vi 'C-h' select-pane -L
bind-key -T copy-mode-vi 'C-j' select-pane -D
bind-key -T copy-mode-vi 'C-k' select-pane -U
bind-key -T copy-mode-vi 'C-l' select-pane -R

# Mapping for clear screen, since vim-tmux-navigator hijacks the default C-L
bind C-l send-keys 'C-l'

# rebind vertical split windows
unbind %
unbind v
unbind C-v
bind C-v split-window -h -c "#{pane_current_path}"

# rebind horizontal split windows
unbind '"'
unbind _
unbind C-_
bind C-_ split-window -v -c "#{pane_current_path}"

# rebind resizing panes to match neovim

# resize 5 rows up
unbind M-Up
bind-key -r -T prefix S-Up resize-pane -U 5

# resize 5 rows down
unbind M-Down
bind-key -r -T prefix S-Down resize-pane -D 5

# resize 5 rows right
unbind M-Right
bind-key -r -T prefix S-Right resize-pane -R 5

# resize 5 rows left
unbind M-Left
bind-key -r -T prefix S-Left resize-pane -L 5

# List of plugins
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'dracula/tmux'
set -g @plugin 'tmux-plugins/tmux-resurrect'

# configure theme
set -g @dracula-show-powerline true
set -g @dracula-plugins "cpu-usage ram-usage"
set -g @dracula-show-flags true
set -g @dracula-show-left-icon session
set -g @dracula-left-icon-padding 0
set -g status-position top

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