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# mclist.tcl --
#
# This demonstration script creates a toplevel window containing a Ttk
# tree widget configured as a multi-column listbox.
if {![info exists widgetDemo]} {
error "This script should be run from the \"widget\" demo."
}
package require Tk
set w .mclist
catch {destroy $w}
toplevel $w
wm title $w "Multi-Column List"
wm iconname $w "mclist"
positionWindow $w
## Explanatory text
ttk::label $w.msg -font $font -wraplength 4i -justify left -anchor n -padding {10 2 10 6} -text "Ttk is the new Tk themed widget set. One of the widgets it includes is a tree widget, which can be configured to display multiple columns of informational data without displaying the tree itself. This is a simple way to build a listbox that has multiple columns. Clicking on the heading for a column will sort the data by that column. You can also change the width of the columns by dragging the boundary between them."
pack $w.msg -fill x
## See Code / Dismiss
pack [addSeeDismiss $w.seeDismiss $w] -side bottom -fill x
ttk::frame $w.container
ttk::treeview $w.tree -columns {country capital currency} -show headings \
-yscroll "$w.vsb set" -xscroll "$w.hsb set"
ttk::scrollbar $w.vsb -orient vertical -command "$w.tree yview"
ttk::scrollbar $w.hsb -orient horizontal -command "$w.tree xview"
pack $w.container -fill both -expand 1
grid $w.tree $w.vsb -in $w.container -sticky nsew
grid $w.hsb -in $w.container -sticky nsew
grid column $w.container 0 -weight 1
grid row $w.container 0 -weight 1
image create photo upArrow -data {
R0lGODlhDgAOAJEAANnZ2YCAgPz8/P///yH5BAEAAAAALAAAAAAOAA4AAAImhI+
py+1LIsJHiBAh+BgmiEAJQITgW6DgUQIAECH4JN8IPqYuNxUAOw==}
image create photo downArrow -data {
R0lGODlhDgAOAJEAANnZ2YCAgPz8/P///yH5BAEAAAAALAAAAAAOAA4AAAInhI+
py+1I4ocQ/IgDEYIPgYJICUCE4F+YIBolEoKPEJKZmVJK6ZACADs=}
image create photo noArrow -height 14 -width 14
## The data we're going to insert
set data {
Argentina {Buenos Aires} ARS
Australia Canberra AUD
Brazil Brazilia BRL
Canada Ottawa CAD
China Beijing CNY
France Paris EUR
Germany Berlin EUR
India {New Delhi} INR
Italy Rome EUR
Japan Tokyo JPY
Mexico {Mexico City} MXN
Russia Moscow RUB
{South Africa} Pretoria ZAR
{United Kingdom} London GBP
{United States} {Washington, D.C.} USD
}
## Code to insert the data nicely
set font [ttk::style lookup Heading -font]
foreach col {country capital currency} name {Country Capital Currency} {
$w.tree heading $col -text $name -image noArrow -anchor w \
-command [list SortBy $w.tree $col 0]
$w.tree column $col -width [expr {
[font measure $font $name] + [image width noArrow] + 5
}]
}
set font [ttk::style lookup Treeview -font]
foreach {country capital currency} $data {
$w.tree insert {} end -values [list $country $capital $currency]
foreach col {country capital currency} {
set len [font measure $font "[set $col] "]
if {[$w.tree column $col -width] < $len} {
$w.tree column $col -width $len
}
}
}
## Code to do the sorting of the tree contents when clicked on
proc SortBy {tree col direction} {
# Determine currently sorted column and its sort direction
foreach c {country capital currency} {
set s [$tree heading $c state]
if {("selected" in $s || "alternate" in $s) && $col ne $c} {
# Sorted column has changed
$tree heading $c -image noArrow state {!selected !alternate !user1}
set direction [expr {"alternate" in $s}]
}
}
# Build something we can sort
set data {}
foreach row [$tree children {}] {
lappend data [list [$tree set $row $col] $row]
}
set dir [expr {$direction ? "-decreasing" : "-increasing"}]
set r -1
# Now reshuffle the rows into the sorted order
foreach info [lsort -dictionary -index 0 $dir $data] {
$tree move [lindex $info 1] {} [incr r]
}
# Switch the heading so that it will sort in the opposite direction
$tree heading $col -command [list SortBy $tree $col [expr {!$direction}]] \
state [expr {$direction?"!selected alternate":"selected !alternate"}]
if {[ttk::style theme use] eq "aqua"} {
# Aqua theme displays native sort arrows when user1 state is set
$tree heading $col state "user1"
} else {
$tree heading $col -image [expr {$direction?"upArrow":"downArrow"}]
}
}
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