dotfiles/tmux/.tmux.conf

####################################
## BINDINGS                       ##
####################################

# Change default Prefix key to Ctrl+Space unless this is an SSH session
if-shell -b '! [ "$SSH_CLIENT" ]' {
  unbind C-b; set -g prefix C-Space; display 'Bind key: CTRL+SPACE'
}

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

# mouse mode
set -g mouse on
bind m set -g mouse on \; display 'Mouse: ON'
bind M set -g mouse off \; display 'Mouse: OFF'

# Increase history limit
set -g history-limit 100000

# shorter escape time
set -sg escape-time 20
set -sg repeat-time 600

# Copy Mode (Prefix+[)
set-window-option -g mode-keys vi                                             # Vim keys to navigate (Ctrl+u, Ctrl+d, /)
unbind -T copy-mode-vi Space;                                                 # Begin-selection
unbind -T copy-mode-vi Enter;                                                 # Copy-selection
bind -T copy-mode-vi v send-keys -X begin-selection                           # select text with 'v'
bind -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "xsel --clipboard"   # copy text with 'y'

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

## PANES
# Split panes with v and h
unbind v
unbind h
unbind %    # Split vertically
unbind '"'  # Split horizontally
bind v split-window -h -c "#{pane_current_path}"
bind h split-window -v -c "#{pane_current_path}"

# Navigating panes with Ctrl+{hjkl}
bind -n C-h select-pane -L
bind -n C-j select-pane -D
bind -n C-k select-pane -U
bind -n C-l select-pane -R

# pane resize with left/right/up/down
bind -r Left resize-pane -L 5
bind -r Right resize-pane -R 5
bind -r Up resize-pane -U 5
bind -r Down resize-pane -D 5

# swap panes with <>
bind > swap-pane -D
bind < swap-pane -U

# synchronize panes with S
bind S set-window-option synchronize-panes \; display-message 'Synchronize-panes #{?pane_synchronized,on,off}'

## WINDOWS
# Windows start at 1 not 0
set -g base-index 1
set-window-option -g pane-base-index 1

# Window operations
unbind n    # Move to next window
unbind w    # Change current window interactively
bind n command-prompt "rename-window '%%'"
bind w new-window -c "#{pane_current_path}"
bind -n M-j previous-window   # Alt+j 
bind -n M-k next-window       # Alt+k

####################################
## DESIGN                         ##
####################################

# default statusbar colors
set-option -g status-style fg=yellow,bg=black

# default window title colors
set-window-option -g window-status-style fg=brightblue,bg=default
# set-window-option -g window-status-style dim

# active window title colors
set-window-option -g window-status-current-style fg=brightred,bg=default
#set-window-option -g window-status-current-style bright

# pane border
set-option -g pane-border-style fg=black
set-option -g pane-active-border-style fg=brightgreen

# message text
set-option -g message-style fg=brightred,bg=black

# pane number display
set-option -g display-panes-active-colour blue
set-option -g display-panes-colour brightred

# clock
set-window-option -g clock-mode-colour brightgreen

# bell
set-window-option -g window-status-bell-style fg=black,bg=red