FM / demos

/usr/share/tk8.6/demos

Name	Size	Mode	Actions
images/	-	0755	rm
anilabel.tcl	6670	0644	edit dl rm
aniwave.tcl	3494	0644	edit dl rm
arrow.tcl	7984	0644	edit dl rm
bind.tcl	2948	0644	edit dl rm
bitmap.tcl	1411	0644	edit dl rm
browse	1758	0755	edit dl rm
button.tcl	1504	0644	edit dl rm
check.tcl	2278	0644	edit dl rm
clrpick.tcl	1431	0644	edit dl rm
colors.tcl	4995	0644	edit dl rm
combo.tcl	1963	0644	edit dl rm
cscroll.tcl	3389	0644	edit dl rm
ctext.tcl	6019	0644	edit dl rm
dialog1.tcl	660	0644	edit dl rm
dialog2.tcl	613	0644	edit dl rm
en.msg	3867	0644	edit dl rm
entry1.tcl	1385	0644	edit dl rm
entry2.tcl	2081	0644	edit dl rm
entry3.tcl	6104	0644	edit dl rm
filebox.tcl	2351	0644	edit dl rm
floor.tcl	79108	0644	edit dl rm
fontchoose.tcl	1752	0644	edit dl rm
form.tcl	1046	0644	edit dl rm
goldberg.tcl	56556	0644	edit dl rm
hello	512	0755	edit dl rm
hscale.tcl	1497	0644	edit dl rm
icon.tcl	2063	0644	edit dl rm
image1.tcl	1002	0644	edit dl rm
image2.tcl	3352	0644	edit dl rm
items.tcl	10133	0644	edit dl rm
ixset	8068	0755	edit dl rm
knightstour.tcl	9140	0644	edit dl rm
label.tcl	1379	0644	edit dl rm
labelframe.tcl	1847	0644	edit dl rm
license.terms	2267	0644	edit dl rm
mclist.tcl	4357	0644	edit dl rm
menu.tcl	6778	0644	edit dl rm
menubu.tcl	4476	0644	edit dl rm
msgbox.tcl	1998	0644	edit dl rm
nl.msg	6750	0644	edit dl rm
paned1.tcl	1110	0644	edit dl rm
paned2.tcl	2244	0644	edit dl rm
pendulum.tcl	7596	0644	edit dl rm
plot.tcl	2758	0644	edit dl rm
puzzle.tcl	2596	0644	edit dl rm
radio.tcl	2752	0644	edit dl rm
README	2082	0644	edit dl rm
rmt	5319	0755	edit dl rm
rolodex	8300	0755	edit dl rm
ruler.tcl	5211	0644	edit dl rm
sayings.tcl	2273	0644	edit dl rm
search.tcl	4403	0644	edit dl rm
spin.tcl	1820	0644	edit dl rm
states.tcl	2048	0644	edit dl rm
style.tcl	6943	0644	edit dl rm
tclIndex	4354	0644	edit dl rm
tcolor	11250	0755	edit dl rm
text.tcl	4267	0644	edit dl rm
textpeer.tcl	2188	0644	edit dl rm
timer	1095	0755	edit dl rm
toolbar.tcl	3264	0644	edit dl rm
tree.tcl	3162	0644	edit dl rm
ttkbut.tcl	3405	0644	edit dl rm
ttkmenu.tcl	2391	0644	edit dl rm
ttknote.tcl	2317	0644	edit dl rm
ttkpane.tcl	4172	0644	edit dl rm
ttkprogress.tcl	1536	0644	edit dl rm
ttkscale.tcl	1420	0644	edit dl rm
twind.tcl	11045	0644	edit dl rm
unicodeout.tcl	4399	0644	edit dl rm
vscale.tcl	1477	0644	edit dl rm
widget	23267	0755	edit dl rm

Edit: /usr/share/tk8.6/demos/anilabel.tcl (6670B)

# anilabel.tcl --
#
# This demonstration script creates a toplevel window containing
# several animated label widgets.

if {![info exists widgetDemo]} {
    error "This script should be run from the \"widget\" demo."
}

package require Tk

set w .anilabel
catch {destroy $w}
toplevel $w
wm title $w "Animated Label Demonstration"
wm iconname $w "anilabel"
positionWindow $w

label $w.msg -font $font -wraplength 4i -justify left -text "Four animated labels are displayed below; each of the labels on the left is animated by making the text message inside it appear to scroll, and the label on the right is animated by animating the image that it displays."
pack $w.msg -side top

## See Code / Dismiss buttons
set btns [addSeeDismiss $w.buttons $w]
pack $btns -side bottom -fill x

# Ensure that this this is an array
array set animationCallbacks {}

## This callback is the core of how to do animation in Tcl/Tk; all
## animations work in basically the same way, with a procedure that
## uses the [after] command to reschedule itself at some point in the
## future. Of course, the details of how to update the state will vary
## according to what is being animated.
proc RotateLabelText {w interval} {
    global animationCallbacks

# Schedule the calling of this procedure again in the future
    set animationCallbacks($w) [after $interval RotateLabelText $w $interval]

# We do marquee-like scrolling text by chopping characters off the
    # front of the text and sticking them on the end.
    set text [$w cget -text]
    set newText [string range $text 1 end][string index $text 0]
    $w configure -text $newText
}

## A helper procedure to start the animation happening.
proc animateLabelText {w text interval} {
    global animationCallbacks

# Install the text into the widget
    $w configure -text $text

# Schedule the start of the animation loop
    set animationCallbacks($w) [after $interval RotateLabelText $w $interval]

## Next, a similar pair of procedures to animate a GIF loaded into a
## photo image.
proc SelectNextImageFrame {w interval} {
    global animationCallbacks
    set animationCallbacks($w) \
	    [after $interval SelectNextImageFrame $w $interval]
    set image [$w cget -image]

# The easy way to animate a GIF!
    set idx -1
    scan [$image cget -format] "GIF -index %d" idx
    if {[catch {
	# Note that we get an error if the index is out of range
	$image configure -format "GIF -index [incr idx]"
    }]} then {
	$image configure -format "GIF -index 0"
    }
}
proc animateLabelImage {w imageData interval} {
    global animationCallbacks

# Create a multi-frame GIF from base-64-encoded data
    set image [image create photo -format GIF -data $imageData]

# Install the image into the widget
    $w configure -image $image

# Schedule the start of the animation loop
    set animationCallbacks($w) \
	    [after $interval SelectNextImageFrame $w $interval]

# Make sure that the animation stops and is cleaned up after itself
    # when the animated label is destroyed.  Note that at this point we
    # cannot manipulate the widget itself, as that has already died.
    # Also note that this script is in double-quotes; this is always OK
    # because image names are chosen automatically to be simple words.
    bind $w <Destroy> "
	after cancel \$animationCallbacks(%W)
	unset animationCallbacks(%W)
	rename $image {}
    "
}

# Make some widgets to contain the animations
labelframe $w.left -text "Scrolling Texts"
labelframe $w.right -text "GIF Image"
pack $w.left $w.right -side left -padx 10 -pady 10 -expand yes

# This method of scrolling text looks far better with a fixed-width font
label $w.left.l1 -bd 4 -relief ridge -font fixedFont
label $w.left.l2 -bd 4 -relief groove -font fixedFont
label $w.left.l3 -bd 4 -relief flat -font fixedFont -width 18
pack $w.left.l1 $w.left.l2 $w.left.l3 -side top -expand yes -padx 10 -pady 10 -anchor w
# Don't need to do very much with this label except turn off the border
label $w.right.l -bd 0
pack $w.right.l -side top -expand yes -padx 10 -pady 10

# This is a base-64-encoded animated GIF file.
set tclPoweredData {
    R0lGODlhKgBAAPQAAP//////zP//AP/MzP/Mmf/MAP+Zmf+ZZv+ZAMz//8zM
    zMyZmcyZZsxmZsxmAMwzAJnMzJmZzJmZmZlmmZlmZplmM5kzM2aZzGZmzGZm
    mWZmZmYzZmYzMzNmzDMzZgAzmSH+IE1hZGUgd2l0aCBHSU1QIGJ5IExARGVt
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    LgAFAAUAAAUM4CeKz/OV5YmqaRkCACH5BAUeAAEALAUALgAKAAUAAAUUICCK
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    ll8IACH5BAUKAAAALB8ANwADAAUAAAUIoCB8o0iWZggAOw==
}

# Finally, set up the text scrolling animation
animateLabelText $w.left.l1 "* Slow Animation *" 300
animateLabelText $w.left.l2 "* Fast Animation *" 80
animateLabelText $w.left.l3 "This is a longer scrolling text in a widget that will not show the whole message at once. " 150
animateLabelImage $w.right.l $tclPoweredData 100

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