DOKK / manpages / debian 11 / tk8.6-doc / ttk_style.3tk.en
ttk::style(3tk) Tk Themed Widget ttk::style(3tk) 







ttk::style - Manipulate style database








ttk::style option ?args?










See also the Tcl'2004 conference presentation, available at
    https://tktable.sourceforge.net/tile/tile-tcl2004.pdf








Each widget is assigned a style, which specifies the set of
    elements making up the widget and how they are arranged, along with dynamic
    and default settings for element options. By default, the style name is the
    same as the widget's class; this may be overridden by the -style
    option.


A theme is a collection of elements and styles which
    controls the overall look and feel of an application.








The ttk::style command takes the following arguments:



  

  
Sets the default value of the specified option(s) in style.

  

  







  

  
Creates a new element in the current theme of type type. The only
      cross-platform built-in element type is image (see
      ttk_image(3tk)) but themes may define other element types (see
      Ttk_RegisterElementFactory). On suitable versions of Windows an
      element factory is registered to create Windows theme elements (see
      ttk_vsapi(3tk)).

  

  
Returns the list of elements defined in the current theme.

  

  
Returns the list of element's options.







  

  
Define the widget layout for style style. See LAYOUTS below
      for the format of layoutSpec. If layoutSpec is omitted,
      return the layout specification for style style.

  

  
Returns the value specified for -option in style style in
      state state, using the standard lookup rules for element options.
      state is a list of state names; if omitted, it defaults to all bits
      off (the “normal” state). If the default argument is
      present, it is used as a fallback value in case no specification for
      -option is found.

  

  
Sets dynamic values of the specified option(s) in style. Each
      statespec / value pair is examined in order; the value
      corresponding to the first matching statespec is used.

  

  







  

  
Creates a new theme. It is an error if themeName already exists. If
      -parent is specified, the new theme will inherit styles, elements,
      and layouts from the parent theme basedon. If -settings is
      present, script is evaluated in the context of the new theme as per
      ttk::style theme settings.

  

  
Returns a list of all known themes.

  

  
Temporarily sets the current theme to themeName, evaluate
      script, then restore the previous theme. Typically script
      simply defines styles and elements, though arbitrary Tcl code may
    appear.

  

  
Without an argument the result is the name of the current theme. Otherwise
      this command sets the current theme to themeName, and refreshes all
      widgets.












A layout specifies a list of elements, each followed by one
    or more options specifying how to arrange the element. The layout mechanism
    uses a simplified version of the pack geometry manager: given an
    initial cavity, each element is allocated a parcel. Then the parcel actually
    used by the element is adjusted within the allocated parcel. Valid options
    are:



  

  
Specifies a list of elements to place inside the element.

  

  
Specifies whether the allocated parcel is the entire cavity. If so,
      simultaneous specification of -side is ignored. Defaults to 0.

  

  
Specifies which side of the cavity to place the element; one of
      left, right, top, or bottom. For instance,
      -side top allocates the parcel along the top of the cavity having
      width and height respectively the width of the cavity and the height of
      the element. If omitted, the allocated parcel is the entire cavity (same
      effect as -expand 1).

  

  
Specifies the actual parcel position and size inside the allocated parcel.
      If specified as an empty string then the actual parcel is centered in the
      allocated parcel. Default is nswe.




For example:




ttk::style layout Horizontal.TScrollbar {


    Scrollbar.trough -children {


        Scrollbar.leftarrow -side left


        Scrollbar.rightarrow -side right


        Horizontal.Scrollbar.thumb -side left -sticky ew


    }
}










ttk::intro(3tk), ttk::widget(3tk), photo(3tk), ttk_image(3tk)








style, theme, appearance







  

    8.5
    Tk