| 1 |
578 |
markom |
# image2.tcl --
|
| 2 |
|
|
#
|
| 3 |
|
|
# This demonstration script creates a simple collection of widgets
|
| 4 |
|
|
# that allow you to select and view images in a Tk label.
|
| 5 |
|
|
#
|
| 6 |
|
|
# SCCS: @(#) image2.tcl 1.9 97/03/02 16:24:48
|
| 7 |
|
|
|
| 8 |
|
|
if {![info exists widgetDemo]} {
|
| 9 |
|
|
error "This script should be run from the \"widget\" demo."
|
| 10 |
|
|
}
|
| 11 |
|
|
|
| 12 |
|
|
# loadDir --
|
| 13 |
|
|
# This procedure reloads the directory listbox from the directory
|
| 14 |
|
|
# named in the demo's entry.
|
| 15 |
|
|
#
|
| 16 |
|
|
# Arguments:
|
| 17 |
|
|
# w - Name of the toplevel window of the demo.
|
| 18 |
|
|
|
| 19 |
|
|
proc loadDir w {
|
| 20 |
|
|
global dirName
|
| 21 |
|
|
|
| 22 |
|
|
$w.f.list delete 0 end
|
| 23 |
|
|
foreach i [lsort [glob [file join $dirName *]]] {
|
| 24 |
|
|
$w.f.list insert end [file tail $i]
|
| 25 |
|
|
}
|
| 26 |
|
|
}
|
| 27 |
|
|
|
| 28 |
|
|
# loadImage --
|
| 29 |
|
|
# Given the name of the toplevel window of the demo and the mouse
|
| 30 |
|
|
# position, extracts the directory entry under the mouse and loads
|
| 31 |
|
|
# that file into a photo image for display.
|
| 32 |
|
|
#
|
| 33 |
|
|
# Arguments:
|
| 34 |
|
|
# w - Name of the toplevel window of the demo.
|
| 35 |
|
|
# x, y- Mouse position within the listbox.
|
| 36 |
|
|
|
| 37 |
|
|
proc loadImage {w x y} {
|
| 38 |
|
|
global dirName
|
| 39 |
|
|
|
| 40 |
|
|
set file [file join $dirName [$w.f.list get @$x,$y]]
|
| 41 |
|
|
image2a configure -file $file
|
| 42 |
|
|
}
|
| 43 |
|
|
|
| 44 |
|
|
set w .image2
|
| 45 |
|
|
catch {destroy $w}
|
| 46 |
|
|
toplevel $w
|
| 47 |
|
|
wm title $w "Image Demonstration #2"
|
| 48 |
|
|
wm iconname $w "Image2"
|
| 49 |
|
|
positionWindow $w
|
| 50 |
|
|
|
| 51 |
|
|
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."
|
| 52 |
|
|
pack $w.msg -side top
|
| 53 |
|
|
|
| 54 |
|
|
frame $w.buttons
|
| 55 |
|
|
pack $w.buttons -side bottom -fill x -pady 2m
|
| 56 |
|
|
button $w.buttons.dismiss -text Dismiss -command "destroy $w"
|
| 57 |
|
|
button $w.buttons.code -text "See Code" -command "showCode $w"
|
| 58 |
|
|
pack $w.buttons.dismiss $w.buttons.code -side left -expand 1
|
| 59 |
|
|
|
| 60 |
|
|
label $w.dirLabel -text "Directory:"
|
| 61 |
|
|
set dirName [file join $tk_library demos images]
|
| 62 |
|
|
entry $w.dirName -width 30 -textvariable dirName
|
| 63 |
|
|
bind $w.dirName <Return> "loadDir $w"
|
| 64 |
|
|
frame $w.spacer1 -height 3m -width 20
|
| 65 |
|
|
label $w.fileLabel -text "File:"
|
| 66 |
|
|
frame $w.f
|
| 67 |
|
|
pack $w.dirLabel $w.dirName $w.spacer1 $w.fileLabel $w.f -side top -anchor w
|
| 68 |
|
|
|
| 69 |
|
|
listbox $w.f.list -width 20 -height 10 -yscrollcommand "$w.f.scroll set"
|
| 70 |
|
|
scrollbar $w.f.scroll -command "$w.f.list yview"
|
| 71 |
|
|
pack $w.f.list $w.f.scroll -side left -fill y -expand 1
|
| 72 |
|
|
$w.f.list insert 0 earth.gif earthris.gif teapot.ppm
|
| 73 |
|
|
bind $w.f.list <Double-1> "loadImage $w %x %y"
|
| 74 |
|
|
|
| 75 |
|
|
catch {image delete image2a}
|
| 76 |
|
|
image create photo image2a
|
| 77 |
|
|
frame $w.spacer2 -height 3m -width 20
|
| 78 |
|
|
label $w.imageLabel -text "Image:"
|
| 79 |
|
|
label $w.image -image image2a
|
| 80 |
|
|
pack $w.spacer2 $w.imageLabel $w.image -side top -anchor w
|
