Feat: interpolate colors (#208)

* feat: interpolate theme colors

* doc: add interpolated colors to readme

README.md

@@ -163,7 +163,7 @@ set -g @catppuccin_window_default_background "color"
 ```
 
 Values:
-- color - a hexadecimal color value
+- color - a theme color (`#{thm_<color>}`) or hexadecimal color value
 
 #### Override the window default text:
 ```sh
@@ -188,7 +188,7 @@ set -g @catppuccin_window_current_background "color"
 ```
 
 Values:
-- color - a hexadecimal color value
+- color - a theme color (`#{thm_<color>}`) or a hexadecimal color value
 
 #### Override the window current text:
 ```sh
@@ -212,13 +212,13 @@ Use this to override the way the directory is displayed.
 #### Set the pane border style:
 
 ```sh
-set -g @catppuccin_pane_border_style "fg=blue" # Use a value compatible with the standard tmux 'pane-border-style'
+set -g @catppuccin_pane_border_style "fg=#{thm_blue}" # Use a value compatible with the standard tmux 'pane-border-style'
 ```
 
 #### Set the pane active border style:
 
 ```sh
-set -g @catppuccin_pane_active_border_style "fg=red" # Use a value compatible with the standard tmux 'pane-border-active-style'
+set -g @catppuccin_pane_active_border_style "fg=#{thm_red}" # Use a value compatible with the standard tmux 'pane-border-active-style'
 ```
 
 
@@ -236,7 +236,7 @@ set -g @catppuccin_status_background "theme"
 This will overwrite the status bar background:
 - "theme" will use the color from the selected theme
 - "default" will make the status bar transparent
-- use hex color codes for other colors
+- use hex color codes for other colors or a theme color (`#{theme_<color>}`)
 
 Note: you need to restart tmux for this to take effect: 
 ```sh

catppuccin.tmux

@@ -12,6 +12,8 @@ source "${PLUGIN_DIR}/builder/window_builder.sh"
 source "${PLUGIN_DIR}/builder/pane_builder.sh"
 # shellcheck source=./utils/tmux_utils.sh
 source "${PLUGIN_DIR}/utils/tmux_utils.sh"
+# shellcheck source=./utils/interpolate_utils.sh
+source "${PLUGIN_DIR}/utils/interpolate_utils.sh"
 # shellcheck source=./utils/module_utils.sh
 source "${PLUGIN_DIR}/utils/module_utils.sh"
 
@@ -29,6 +31,8 @@ main() {
 
   # load local theme
   local theme
+  local color_interpolation=()
+  local color_values=()
   theme="$(get_tmux_option "@catppuccin_flavour" "mocha")"
   # NOTE: Pulling in the selected theme by the theme that's being set as local
   # variables.
@@ -42,6 +46,9 @@ main() {
     # '$key' stores the key.
     # '$val' stores the value.
     eval "local $key"="$val"
+
+    color_interpolation+=("\#{$key}")
+    color_values+=("${val:1:-1}")
   done <"${PLUGIN_DIR}/themes/catppuccin_${theme}.tmuxtheme"
 
   # status general
@@ -62,8 +69,8 @@ main() {
       set status-style bg=default
       message_background="default"
     else
-      set status-bg "${status_background}"
-      message_background="${status_background}"
+      message_background="$(do_color_interpolation)"
+      set status-bg "${message_background}"
     fi
   fi
 
@@ -80,9 +87,11 @@ main() {
     pane_right_separator pane_number_position pane_format
   pane_status_enable=$(get_tmux_option "@catppuccin_pane_status_enabled" "no") # yes
   pane_border_status=$(get_tmux_option "@catppuccin_pane_border_status" "off") # bottom
-  pane_border_style=$(get_tmux_option "@catppuccin_pane_border_style" "fg=${thm_gray}")
+  pane_border_style=$(
+    get_interpolated_tmux_option "@catppuccin_pane_border_style" "fg=${thm_gray}"
+  )
   pane_active_border_style=$(
-    get_tmux_option "@catppuccin_pane_active_border_style" \
+    get_interpolated_tmux_option "@catppuccin_pane_active_border_style" \
       "#{?pane_in_mode,fg=${thm_yellow},#{?pane_synchronized,fg=${thm_magenta},fg=${thm_orange}}}"
   )
   pane_left_separator=$(get_tmux_option "@catppuccin_pane_left_separator" "█")
@@ -94,14 +103,14 @@ main() {
   setw pane-border-status "$pane_border_status"
   setw pane-active-border-style "$pane_active_border_style"
   setw pane-border-style "$pane_border_style"
-  setw pane-border-format "$pane_format"
+  setw pane-border-format "$(do_color_interpolation "$pane_format")"
 
   # window
   local window_status_separator window_left_separator window_right_separator \
     window_middle_separator window_number_position window_status_enable \
     window_format window_current_format
 
-  window_status_separator=$(get_tmux_option "@catppuccin_window_separator" "")
+  window_status_separator=$(get_interpolated_tmux_option "@catppuccin_window_separator" "")
   setw window-status-separator "$window_status_separator"
 
   window_left_separator=$(get_tmux_option "@catppuccin_window_left_separator" "█")
@@ -111,10 +120,10 @@ main() {
   window_status_enable=$(get_tmux_option "@catppuccin_window_status_enable" "no")       # right, left
 
   window_format=$(load_modules "window_default_format" "$modules_custom_path" "$modules_window_path")
-  setw window-status-format "$window_format"
+  setw window-status-format "$(do_color_interpolation "$window_format")"
 
   window_current_format=$(load_modules "window_current_format" "$modules_custom_path" "$modules_window_path")
-  setw window-status-current-format "$window_current_format"
+  setw window-status-current-format "$(do_color_interpolation "$window_current_format")"
 
   # status module
   local status_left_separator status_right_separator status_connect_separator \
@@ -126,11 +135,11 @@ main() {
 
   status_modules_left=$(get_tmux_option "@catppuccin_status_modules_left" "")
   loaded_modules_left=$(load_modules "$status_modules_left" "$modules_custom_path" "$modules_status_path")
-  set status-left "$loaded_modules_left"
+  set status-left "$(do_color_interpolation "$loaded_modules_left")"
 
   status_modules_right=$(get_tmux_option "@catppuccin_status_modules_right" "application session")
   loaded_modules_right=$(load_modules "$status_modules_right" "$modules_custom_path" "$modules_status_path")
-  set status-right "$loaded_modules_right"
+  set status-right "$(do_color_interpolation "$loaded_modules_right")"
 
   # modes
   setw clock-mode-colour "${thm_blue}"

utils/interpolate_utils.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+
+do_color_interpolation() {
+	local all_interpolated="$1"
+
+	for ((i=0; i<${#color_interpolation[@]}; i++)); do
+		all_interpolated=${all_interpolated//${color_interpolation[$i]}/${color_values[$i]}}
+	done
+
+	echo "$all_interpolated"
+}

utils/tmux_utils.sh

@@ -22,6 +22,27 @@ get_tmux_option() {
   fi
 }
 
+get_interpolated_tmux_option() {
+  local option value default
+  option="$1"
+  default="$2"
+  value=$(tmux show-option -gqv "$option")
+
+  if [ -n "$value" ]
+  then
+    if [ "$value" = "null" ]
+    then
+      echo ""
+
+    else
+      do_color_interpolation "$value"
+    fi
+
+  else
+    echo "$default"
+  fi
+}
+
 set() {
   local option=$1
   local value=$2