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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."
}
set w .atomicGroups
catch {destroy $w}
toplevel $w
wm title $w "Zinc Atomicity Demonstration"
wm iconname $w "Atomic"
set defaultfont [font create -family Helvetica -size 10 -weight bold]
frame $w.buttons
pack $w.buttons -side bottom -fill x -pady 2m
button $w.buttons.dismiss -text Dismiss -command "destroy $w"
button $w.buttons.code -text "See Code" -command "showCode $w"
pack $w.buttons.dismiss $w.buttons.code -side left -expand 1
zinc $w.zinc -width 500 -height 350 -font "10x20" -borderwidth 0
pack $w.zinc
set groups_group_atomicity 0
set red_group_atomicity 0
set green_group_atomicity 0
set display_clipping_item_background 0
set clip 1
$w.zinc add "text" 1 -font $defaultfont -text "- There are 3 groups: a red group containing 2 redish objects\na green group containing 2 greenish objects,\nand groups_group containing both previous groups.\n- You can make some groups atomic or not by depressing \nthe toggle buttons at the bottom of the window\n- Try and then click on some items to observe that callbacks\n are then different: they modify either the item, or 2 items of\n a group or all items" -anchor "nw" -position "10 10"
############### creating the top group with its bindings ###############################
set groups_group [$w.zinc add group 1 -visible 1 -atomic $groups_group_atomicity -tags groups_group]
# the following callbacks will be called only if "groups_group" IS atomic
$w.zinc bind $groups_group <1> modify_bitmap_bg
$w.zinc bind $groups_group <ButtonRelease-1> modify_bitmap_bg
############### creating the red_group, with its binding and its content ################
# the red_group may be atomic, that is is makes all children as a single object
# and sensitive to red_group callbacks
set red_group [$w.zinc add group $groups_group -visible 1 -atomic $red_group_atomicity -sensitive 1 -tags red_group]
# the following callbacks will be called only if "groups_group" IS NOT-atomic
# and if "red_group" IS atomic
$w.zinc bind $red_group <1> "modify_item_lines $red_group"
$w.zinc bind $red_group <ButtonRelease-1> "modify_item_lines $red_group"
set rc [$w.zinc add arc $red_group {100 200 140 240} -filled 1 -fillcolor red2 -linewidth 3 -linecolor white -tags red_circle]
set rr [$w.zinc add rectangle $red_group {300 200 400 250} -filled 1 -fillcolor red2 -linewidth 3 -linecolor white -tags red_rectangle]
# the following callbacks will be called only if "groups_group" IS NOT atomic
# and if "red_group" IS NOT atomic
$w.zinc bind $rc <1> toggle_color
$w.zinc bind $rc <ButtonRelease-1> toggle_color
$w.zinc bind $rr <1> toggle_color
$w.zinc bind $rr <ButtonRelease-1> toggle_color
############### creating the green_group, with its binding and its content ################
# the green_group may be atomic, that is is makes all children as a single object
# and sensitive to green_group callbacks
set green_group [$w.zinc add group $groups_group -visible 1 -atomic $green_group_atomicity -sensitive 1 -tags green_group]
# the following callbacks will be called only if "groups_group" IS NOT atomic
# and if "green_group" IS atomic
$w.zinc bind $green_group <1> "modify_item_lines $green_group"
$w.zinc bind $green_group <ButtonRelease-1> "modify_item_lines $green_group"
set gc [$w.zinc add arc $green_group {100 270 140 310} -filled 1 -fillcolor green2 -linewidth 3 -linecolor white -tags green_circle]
set gr [$w.zinc add rectangle $green_group {300 270 400 320} -filled 1 -fillcolor green2 -linewidth 3 -linecolor white -tags green_rectangle]
# the following callbacks will be called only if "groups_group" IS NOT atomic
# and if "green_group" IS NOT atomic
$w.zinc bind $gc <1> toggle_color
$w.zinc bind $gc <ButtonRelease-1> toggle_color
$w.zinc bind $gr <1> toggle_color
$w.zinc bind $gr <ButtonRelease-1> toggle_color
set current_bg ""
###################### groups_group callback ##############
proc modify_bitmap_bg {} {
global current_bg
global rc rr gc gr
global w
if {$current_bg=="AlphaStipple2"} {
set current_bg {}
} else {
set current_bg AlphaStipple2
}
foreach item "$rc $rr $gc $gr" {
$w.zinc itemconfigure $item -fillpattern $current_bg
}
}
#################### red/green_group callback ##############
proc modify_item_lines {gr} {
global w
set children [$w.zinc find withtag ".$gr*"]
# we are using a pathtag (still undocumented feature of 3.2.6) to get items of an atomic group!
# we could also temporary modify the groups (make it un-atomic) to get its child
set current_linewidth [$w.zinc itemcget [lindex $children 0] -linewidth]
if {$current_linewidth == 3} {
set current_linewidth 0
} else {
set current_linewidth 3
}
foreach item $children {
$w.zinc itemconfigure $item -linewidth $current_linewidth
}
}
##################### items callback ######################
proc toggle_color {} {
global w
set item [$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$num"
}
proc atomic_or_not {gr} {
global w
set val [lindex [$w.zinc itemconfigure $gr -atomic] 4]
if {$val==1} {
$w.zinc itemconfigure $gr -atomic 0
} else {
$w.zinc itemconfigure $gr -atomic 1
}
update_found_items
}
###################### toggle buttons at the bottom ####
frame $w.row
pack $w.row
checkbutton $w.row.cb -text "groups_group is atomic" -variable groups_group_atomicity -command "atomic_or_not $groups_group"
pack $w.row.cb -anchor "w"
checkbutton $w.row.cb2 -text "red group is atomic" -foreground red4 -variable red_group_atomicity -command "atomic_or_not $red_group"
pack $w.row.cb2 -anchor w
checkbutton $w.row.cb3 -text "green group is atomic" -foreground green4 -variable green_group_atomicity -command "atomic_or_not $green_group"
pack $w.row.cb3 -anchor w
label $w.row.lb
pack $w.row.lb -anchor w
label $w.row.lb2 -text "Following command $w.zinc find overlapping 0 200 500 400 returns:"
pack $w.row.lb2 -anchor w
set label [pack [label $w.row.label -background gray95] -anchor w]
##### to update the list of enclosed items
proc update_found_items {} {
global w
set found [$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.row.label configure -text $str
}
# to init the list of enclosed items
update_found_items
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