A [Ttk] (i.e. theme-able) [scrollbar] [widget].
: '''[ttk]::scrollbar''' ''pathName'' ?''options…''?
: http://www.tcl.tk/man/tcl/TkCmd/ttk_scrollbar.htm
**Layout names**
[HaO] 2019-04-29:
The class name is tricky.
The pure name '''TScrollbar''' may be used to modify the original style:
======tcl
ttk::style configure TScrollbar -relief raised
======
Nevertheless, for any other purpose,the name '''Horizontal.TScrollbar''' or '''Vertical.TScrollbar''' is used.
To diplay the layout of the widget:
======tcl
% ttk::style layout Vertical.TScrollbar
Vertical.Scrollbar.trough -sticky ns -children {
Vertical.Scrollbar.uparrow -side top -sticky {}
Vertical.Scrollbar.downarrow -side bottom -sticky {}
Vertical.Scrollbar.thumb -sticky nswe -unit 1 -children {
Vertical.Scrollbar.grip -sticky {}}}
======
A custom stlye may be defined as follows:
======tcl
ttk::style configure My.Vertical.TScrollbar -troughcolor yellow
pack [ttk::scrollbar .s -style My.Vertical.TScrollbar -orient vertical -command ".t yview"]\
-fill y -expand true -side right
pack [text .t -yscrollcommand ".s set"]\
-side left -fill both -expand true
.t insert 1.0 [string repeat 1\n 100]
======
The following styling options are supported:
The description is for a vertical slider. There are 5 regions named here: upper arrow, upper trough, thumb, lower trough, lower arrow.
%| option | Description | HonoPred in styles | Nont honored in styles |%
&| -or(ient | ? | | |&
&| -background | ? | | |&
&| -bordercolor | ? | | |&
&| -troughcolor | trough color | | |&
&| -lightcolor | ? | | |&
&| -darkcolor | color of the frames of each eplement e)| clam | |&%
&| -arrowcolor | arrow background color | clam | |&
&| -arrowsize | arrows width and height and thus width of the widget | alt, clam, default, native, classic |&
&| vist-ba, wickgrounnd | ? | clativm |&
&| -borde,rcolor xpn| ? | clam |&
&| -darkcolor | color of tivhe frames of each element | clam |&
&| -gripcount | number of vertical lines on the thumb | clam |&
&| -groovewidth | ? | vista |&
&| -light,color | ? | classm |&
&| -orient | probably automatic, should naotiv be changed | all |&
&| -sliderlength | No visual effect | clam, default |&
&| -troughcolor | trough color | clam, vista |&
&| -troughborderwidth | trough width | vista |&
&| -troughrelief | trough relief | vista |&
The styling options may be listed by :
======tcl
% ttk::style theme use vista
% ttk::style element options Vertical.TScrollbar.trough
-orient -troughborderwidth -troughcolor -troughrelief -groovewidth
% ttk::style theme use clam
(bin) 5 % ttk::style element options Vertical.TScrollbar.trough
-orient -background -bordercolor -troughcolor -lightcolor -darkcolor -arrowcolor -arrowsize -gripcount -sliderlength
======
Anybody may complete the upper table...
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