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# Tix Demostration Program
#
# This sample program is structured in such a way so that it can be
# executed from the Tix demo program "widget": it must have a
# procedure called "RunSample". It should also have the "if" statment
# at the end of this file so that it can be run as a standalone
# program using tixwish.
# Demonstrates how to use compound images to display icons in a canvas widget.
#
proc RunSample {w} {
set top [frame $w.f -bd 1 -relief raised]
set box [tixButtonBox $w.b -bd 1 -relief raised]
pack $box -side bottom -fill both
pack $top -side top -fill both -expand yes
label $top.lab -text "Drag the icons"
pack $top.lab -anchor c -side top -pady 4
# Create the canvas to display the icons
#
set c [canvas $top.c -relief sunken -bd 1]
pack $c -side top -expand yes -fill both -padx 4 -pady 4
# create several compound images in the canvas
#
set network [tix getimage network]
set harddisk [tix getimage harddisk]
set cmp_1 [image create compound -window $c -bd 1]
$cmp_1 add image -image $network
$cmp_1 add line
$cmp_1 add text -text " Network "
set cmp_2 [image create compound -window $c -bd 1]
$cmp_2 add image -image $harddisk
$cmp_2 add line
$cmp_2 add text -text " Hard disk "
set cmp_3 [image create compound -window $c -bd 1 \
-background #c0c0ff -relief raised \
-showbackground 1]
$cmp_3 add image -image $network
$cmp_3 add line
$cmp_3 add text -text " Network 2 "
$c create image 50 50 -image $cmp_1
$c create image 150 50 -image $cmp_2
$c create image 250 50 -image $cmp_3
bind $c <1> "itemStartDrag $c %x %y"
bind $c <B1-Motion> "itemDrag $c %x %y"
# Create the buttons
#
$box add ok -text Ok -command "destroy $w" -width 6
$box add cancel -text Cancel -command "destroy $w" -width 6
}
proc itemStartDrag {c x y} {
global lastX lastY
$c raise current
set lastX [$c canvasx $x]
set lastY [$c canvasy $y]
}
proc itemDrag {c x y} {
global lastX lastY
set x [$c canvasx $x]
set y [$c canvasy $y]
$c move current [expr $x-$lastX] [expr $y-$lastY]
set lastX $x
set lastY $y
}
if {![info exists tix_demo_running]} {
wm withdraw .
set w .demo
toplevel $w
RunSample $w
bind $w <Destroy> exit
}
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