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# these simple samples have been developped by C. Mertz mertz@cena.fr in perl
# tcl version by Jean-Paul Imbert imbert@cena.fr
if {![info exists zincDemo]} {
error "This script should be run from the zinc-widget demo."
}
namespace eval atomicGroups {
variable w .atomicGroups
catch {destroy $w}
toplevel $w
wm title $w "Zinc Atomicity Demonstration"
wm iconname $w "Atomic"
variable defaultfont [font create -family Helvetica -size 10 -weight bold]
grid [button $w.dismiss -text Dismiss -command "destroy $w"] -row 6 -column 0 -pady 10
grid [button $w.code -text "See Code" -command "showCode $w"] -row 6 -column 1 -pady 10
grid [zinc $w.zinc -width 500 -height 350 -font 10x20 -borderwidth 0] \
-row 0 -column 0 -columnspan 2 -sticky news
grid columnconfigure $w 0 -weight 1
grid columnconfigure $w 1 -weight 1
grid rowconfigure $w 0 -weight 2
variable groupsGroupAtomicity 0
variable redGroupAtomicity 0
variable greenGroupAtomicity 0
$w.zinc add "text" 1 -font $defaultfont -text "- There are 3 groups: a red group containing 2 redish objects\na green group containing 2 greenish objects,\nand groupsGroup containing both previous groups.\n- You can make some groups atomic or not by depressing \nthe toggle buttons at the bottom of the window\n- Try and then click on some items to observe that callbacks\n are then different: they modify either the item, or 2 items of\n a group or all items" -anchor "nw" -position "10 10"
############### creating the top group with its bindings ###############################
variable groupsGroup [$w.zinc add group 1 -visible 1 -atomic $groupsGroupAtomicity -tags groupsGroup]
# the following callbacks will be called only if "groupsGroup" IS atomic
$w.zinc bind $groupsGroup <1> ::atomicGroups::modifyBitmapBg
$w.zinc bind $groupsGroup <ButtonRelease-1> ::atomicGroups::modifyBitmapBg
############### creating the redGroup, with its binding and its content ################
# the redGroup may be atomic, that is is makes all children as a single object
# and sensitive to redGroup callbacks
variable redGroup [$w.zinc add group $groupsGroup -visible 1 -atomic $redGroupAtomicity -sensitive 1 -tags redGroup]
# the following callbacks will be called only if "groupsGroup" IS NOT-atomic
# and if "redGroup" IS atomic
$w.zinc bind $redGroup <1> "::atomicGroups::modifyItemLines $redGroup"
$w.zinc bind $redGroup <ButtonRelease-1> "::atomicGroups::modifyItemLines $redGroup"
variable rc [$w.zinc add arc $redGroup {100 200 140 240} -filled 1 -fillcolor red2 -linewidth 3 -linecolor white -tags redCircle]
variable rr [$w.zinc add rectangle $redGroup {300 200 400 250} -filled 1 -fillcolor red2 -linewidth 3 -linecolor white -tags redRectangle]
# the following callbacks will be called only if "groupsGroup" IS NOT atomic
# and if "redGroup" IS NOT atomic
$w.zinc bind $rc <1> ::atomicGroups::toggleColor
$w.zinc bind $rc <ButtonRelease-1> ::atomicGroups::toggleColor
$w.zinc bind $rr <1> ::atomicGroups::toggleColor
$w.zinc bind $rr <ButtonRelease-1> ::atomicGroups::toggleColor
############### creating the greenGroup, with its binding and its content ################
# the greenGroup may be atomic, that is is makes all children as a single object
# and sensitive to greenGroup callbacks
variable greenGroup [$w.zinc add group $groupsGroup -visible 1 -atomic $greenGroupAtomicity -sensitive 1 -tags greenGroup]
# the following callbacks will be called only if "groupsGroup" IS NOT atomic
# and if "greenGroup" IS atomic
$w.zinc bind $greenGroup <1> "::atomicGroups::modifyItemLines $greenGroup"
$w.zinc bind $greenGroup <ButtonRelease-1> "::atomicGroups::modifyItemLines $greenGroup"
variable gc [$w.zinc add arc $greenGroup {100 270 140 310} -filled 1 -fillcolor green2 -linewidth 3 -linecolor white -tags greenCircle]
variable gr [$w.zinc add rectangle $greenGroup {300 270 400 320} -filled 1 -fillcolor green2 -linewidth 3 -linecolor white -tags greenRectangle]
# the following callbacks will be called only if "groupsGroup" IS NOT atomic
# and if "greenGroup" IS NOT atomic
$w.zinc bind $gc <1> ::atomicGroups::toggleColor
$w.zinc bind $gc <ButtonRelease-1> ::atomicGroups::toggleColor
$w.zinc bind $gr <1> ::atomicGroups::toggleColor
$w.zinc bind $gr <ButtonRelease-1> ::atomicGroups::toggleColor
variable currentBg ""
###################### groupsGroup callback ##############
proc modifyBitmapBg {} {
variable currentBg
variable rc
variable rr
variable gc
variable gr
variable w
if {$currentBg=="AlphaStipple2"} {
set currentBg {}
} else {
set currentBg AlphaStipple2
}
foreach item "$rc $rr $gc $gr" {
$w.zinc itemconfigure $item -fillpattern $currentBg
}
}
#################### red/greenGroup callback ##############
proc modifyItemLines {gr} {
variable w
set children [$w.zinc find withtag ".$gr*"]
# we are using a pathtag (still undocumented feature of 3.2.6) to get items of an atomic group!
# we could also temporary modify the groups (make it un-atomic) to get its child
set currentLineWidth [$w.zinc itemcget [lindex $children 0] -linewidth]
if {$currentLineWidth == 3} {
set currentLineWidth 0
} else {
set currentLineWidth 3
}
foreach item $children {
$w.zinc itemconfigure $item -linewidth $currentLineWidth
}
}
##################### items callback ######################
proc toggleColor {} {
variable w
set item [$w.zinc find withtag current]
set fillcolor [$w.zinc itemcget $item -fillcolor]
regexp {([a-z]+)(\d)} $fillcolor "" color num
#my ($color $num) = $fillcolor =~ /("a-z"+)(\d)/
if {$num == 2} {
set val 1
set num 4
} else {
set num 2
}
$w.zinc itemconfigure $item -fillcolor "$color$num"
}
proc atomicOrNot {gr} {
variable w
set val [lindex [$w.zinc itemconfigure $gr -atomic] 4]
if {$val==1} {
$w.zinc itemconfigure $gr -atomic 0
} else {
$w.zinc itemconfigure $gr -atomic 1
}
updateFoundItems
}
###################### toggle buttons at the bottom ####
grid [checkbutton $w.cb -text "groupsGroup is atomic" -variable ::atomicGroups::groupsGroupAtomicity \
-command "::atomicGroups::atomicOrNot $groupsGroup"] -row 1 -column 0 -sticky w
grid [checkbutton $w.cb2 -text "red group is atomic" -foreground red4 \
-variable ::atomicGroups::redGroupAtomicity \
-command "::atomicGroups::atomicOrNot $redGroup"] -row 2 -column 0 -sticky w
grid [checkbutton $w.cb3 -text "green group is atomic" -foreground green4 \
-variable ::atomicGroups::greenGroupAtomicity \
-command "::atomicGroups::atomicOrNot $greenGroup"] -row 3 -column 0 -sticky w
grid [label $w.lb2 -text "Following command '$w.zinc find overlapping 0 200 500 400', returns:"] \
-row 4 -column 0 -columnspan 2 -pady 10
grid [label $w.label -text ""] \
-row 5 -column 0 -columnspan 2
##### to update the list of enclosed items
proc updateFoundItems {} {
variable w
set found [$w.zinc find overlapping 0 200 500 400]
set str ""
foreach item $found {
set tags [$w.zinc itemcget $item -tags]
set str "$str $tags"
}
$w.label configure -text $str
}
# to init the list of enclosed items
updateFoundItems
}
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