# Commands Related to tile Themes

### by

## Csaba Nemethi

## Contents

- Overview
- The `tablelist::setTheme` Command
- The `tablelist::getCurrentTheme` Command
- The `tablelist::getThemes` Command
- The `tablelist::setThemeDefaults` Command

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## Overview

The commands described in this reference page should only be invoked when using the package Tablelist_tile. They enable you to set and query the current theme, to retrieve a list of the available themes, and to make sure that your widgets will have a theme-specific appearance.

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## The `tablelist::setTheme` Command

NAME
  `tablelist::setTheme` - Set the current theme
SYNOPSIS

      tablelist::setTheme theme

DESCRIPTION
  This command sets the current theme to `theme`, loading it if necessary. It is simply an alias for `ttk::setTheme` or `tile::setTheme`, depending on the tile version loaded into the interpreter. (The `tile::setTheme` command was renamed to `ttk::setTheme` in tile version 0.8.)

  Being just an alias for a tile library procedure, the `tablelist::setTheme` command does exactly the same as the original one: It loads the package implementing the given theme if needed, sets the theme to the specified one, and saves the latter in the variable `ttk::currentTheme` or `tile::currentTheme`, depending on the current tile version.

KEYWORDS
  tablelist, theme, tile

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## The `tablelist::getCurrentTheme` Command

NAME
  `tablelist::getCurrentTheme` - Get the current theme
SYNOPSIS

      tablelist::getCurrentTheme

DESCRIPTION
  This command returns the value of the variable `ttk::currentTheme` or `tile::currentTheme`, depending on the tile version loaded into the interpreter. (The namespace containing the variable `currentTheme` was changed in tile version 0.8 from `tile` to `ttk`.)
KEYWORDS
  tablelist, theme, tile

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## The `tablelist::getThemes` Command

NAME
  `tablelist::getThemes` - Get the themes registered in the package database
SYNOPSIS

      tablelist::getThemes

DESCRIPTION
  This command returns a list of the themes registered in the package database. It is simply an alias for `ttk::themes` or `tile::availableThemes`, depending on the tile version loaded into the interpreter. (The `tile::availableThemes` command was renamed to `ttk::themes` in tile version 0.8.)
KEYWORDS
  tablelist, theme, tile

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## The `tablelist::setThemeDefaults` Command

NAME
  `tablelist::setThemeDefaults` - Set theme-specific default values of some tablelist configuration options
SYNOPSIS

      tablelist::setThemeDefaults

DESCRIPTION
  This command populates the array `tablelist::themeDefaults` with theme-specific default values of a series of Tablelist configuration options. The array names are the command-line names of the options, and the corresponding array values are the default values of these configuration options for the currently set tile theme.

  The options whose names and values are written into the array `tablelist::themeDefaults` are: `-background`, `-foreground`, `-disabledforeground`, `-stripebackground`, `-selectbackground`, `-selectforeground`, `-selectborderwidth`, `-font`, `-labelbackground`, `-labelforeground`, `-labelfont`, `-labelborderwidth`, `-labelpady`, `-arrowcolor`, `-arrowdisabledcolor`, and `-arrowstyle`. In addition, the command sets some other array elements to theme-specific default values of the background and foreground colors of the column labels in `disabled`, `active`, and `pressed` states. (Tablelist needs the label colors for handling sort arrows and images with transparent background in the column labels.)

  The `tablelist::setThemeDefaults` command is invoked by Tablelist_tile automatically whenever a tablelist widget is createad or the `<<ThemeChanged>>` virtual event is received by a tablelist widget. In the latter case, the widget is reconfigured, using the new default values of those options that were not set explicitly to values different from the corresponding defaults.

  Besides being used by the Tablelist_tile code, this command can also be invoked in Tcl scripts, still before creating any tile-based tablelist widget. By calling it explicitly and using the values written by it into the array `tablelist::themeDefaults`, you can make sure that classical Tk widgets, e.g., listbox and text, will have a theme-specific appearance, just like the tile widgets. For example, you can add some common configuration options to the option database as follows:

  >     tablelist::setThemeDefaults
  >     if {$tile::currentTheme eq "aqua"} {
  >         option add *Listbox.selectBackground \
  >                    $tablelist::themeDefaults(-selectbackground)
  >         option add *Listbox.selectForeground \
  >                    $tablelist::themeDefaults(-selectforeground)
  >     } else {
  >         option add *selectBackground  $tablelist::themeDefaults(-selectbackground)
  >         option add *selectForeground  $tablelist::themeDefaults(-selectforeground)
  >     }
  >     option add *selectBorderWidth     $tablelist::themeDefaults(-selectborderwidth)

KEYWORDS
  tablelist, theme, tile

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