I made this prototype that types text "in slow motion" into a text
widget. It works as expected in text widgets, but not in labels.
Can someone please help me with this?

------------------------------------
package require Tk
wm withdraw .
catch {destroy .sr}
set ::SRw [toplevel .sr]
wm resizable $::SRw 1 1
tk appname "New project"
wm title $::SRw "New project"

frame $::SRw.outerframe
$::SRw.outerframe configure -background #23ADB5
$::SRw.outerframe configure -padx 6 -pady 4
$::SRw.outerframe configure -relief raised -borderwidth 4
pack $::SRw.outerframe
text $::SRw.outerframe.textbox
$::SRw.outerframe.textbox configure -font {Arial 24}
$::SRw.outerframe.textbox configure -width 40 -height 4 $::SRw.outerframe.textbox configure -background #23ADB5 -fg #ffffff $::SRw.outerframe.textbox configure -padx 10 -pady 4
pack $::SRw.outerframe.textbox
label $::SRw.outerframe.label
$::SRw.outerframe.label configure
$::SRw.outerframe.label configure -text "Some text."
$::SRw.outerframe.label configure -font {Arial 16}
$::SRw.outerframe.label configure -background #ffffff -foreground #000000
pack $::SRw.outerframe.label -side left

bind $::SRw <Alt_L><q> {exit 0}

proc sleep {time} {
after $time set end 1
vwait end
}

set string "This is a slo mo text insertion test."

for {set x 0} {$x <= [string length $string]} {incr x} {
sleep 150
$::SRw.outerframe.textbox insert end [string index $string $x]
}
for {set x 0} {$x <= [string length $string]} {incr x} {
sleep 150
$::SRw.outerframe.label configure -text [string range $string 0 [expr [string length $string] -1]]
}

--
Luc

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Hi,
Rich is ok.
The code could be

for {set x 0} {$x <= [string length $string]} {incr x} {
sleep 150
$::SRw.outerframe.label configure -text [string range $string 0 $x]
}

or backward

for {set x 0} {$x <= [string length $string]} {incr x} {
sleep 150
$::SRw.outerframe.label configure -text [string range $string 0 [expr [string length $string] -$x-1]]
}

Alejandro

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Luc <luc@sep.invalid> wrote:

$::SRw.outerframe.label configure -text [string range $string 0 [expr [string length $string] -1]]

Your expr at the end there is a constant during each loop iteration
provided "$string" does not change contents during the loop.

A constant value for the second argumennt to string range is *not* what
you want for your desired output.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

El miércoles, 22 de marzo de 2023 a las 21:45:45 UTC-3, Luc escribió:

I made this prototype that types text "in slow motion" into a text
widget. It works as expected in text widgets, but not in labels.
Can someone please help me with this?

------------------------------------
package require Tk
wm withdraw .
catch {destroy .sr}
set ::SRw [toplevel .sr]
wm resizable $::SRw 1 1
tk appname "New project"
wm title $::SRw "New project"

frame $::SRw.outerframe
$::SRw.outerframe configure -background #23ADB5
$::SRw.outerframe configure -padx 6 -pady 4
$::SRw.outerframe configure -relief raised -borderwidth 4
pack $::SRw.outerframe
text $::SRw.outerframe.textbox
$::SRw.outerframe.textbox configure -font {Arial 24} $::SRw.outerframe.textbox configure -width 40 -height 4 $::SRw.outerframe.textbox configure -background #23ADB5 -fg #ffffff $::SRw.outerframe.textbox configure -padx 10 -pady 4
pack $::SRw.outerframe.textbox
label $::SRw.outerframe.label
$::SRw.outerframe.label configure
$::SRw.outerframe.label configure -text "Some text."
$::SRw.outerframe.label configure -font {Arial 16}
$::SRw.outerframe.label configure -background #ffffff -foreground #000000 pack $::SRw.outerframe.label -side left

bind $::SRw <Alt_L><q> {exit 0}

proc sleep {time} {
after $time set end 1
vwait end
}

set string "This is a slo mo text insertion test."

for {set x 0} {$x <= [string length $string]} {incr x} {
sleep 150
$::SRw.outerframe.textbox insert end [string index $string $x]
}
for {set x 0} {$x <= [string length $string]} {incr x} {
sleep 150
$::SRw.outerframe.label configure -text [string range $string 0 [expr [string length $string] -1]]
}

--
Luc

Or a bit more tclish:

package require Tk
pack [label .l] -fill x
pack [text .t]

set i 0
set string "This is a slo mo text insertion test."
foreach char [split $string {}] {
after [incr i 150] [list .t insert end $char]
}

foreach char [split $string {}] {
after [incr i 150] [format {
.l configure -text "[.l cget -text]%s"
} $char]
}

Regards

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)