# This demonstration script creates a simple collection of widgets
# that allow you to select and view images in a Tk label.
#
# SCCS: @(#) image2.tcl 1.8 96/08/20 16:53:29
# loadDir --
# This procedure reloads the directory listbox from the directory
# named in the demo's entry.
#
# Arguments:
# w - Name of the toplevel window of the demo.
proc loadDir w {
global dirName
$w.f.list delete 0 end
foreach i [lsort [glob [file join $dirName *]]] {
$w.f.list insert end [file tail $i]
}
}
# loadImage --
# Given the name of the toplevel window of the demo and the mouse
# position, extracts the directory entry under the mouse and loads
# that file into a photo image for display.
#
# Arguments:
# w - Name of the toplevel window of the demo.
# x, y- Mouse position within the listbox.
proc loadImage {w x y} {
global dirName
set file [file join $dirName [$w.f.list get @$x,$y]]
image2a configure -file $file
}
set w .image2
catch {destroy $w}
toplevel $w
wm title $w "Image Demonstration #2"
wm iconname $w "Image2"
positionWindow $w
label $w.msg -font $font -wraplength 4i -justify left -text "This demonstration allows you to view images using a Tk \"photo\" image. First type a directory name in the listbox, then type Return to load the directory into the listbox. Then double-click on a file name in the listbox to see that image."