# # This Tcl/Tk script is quoted from . # package require Tk namespace eval ::tktree { # Images used for open and close state of subgroups set ::tktree::imgcollapse [image create photo .tktreeopenbm -data { R0lGODdhCQAJAIAAAAEBAf///ywAAAAACQAJAAACEISPoRvG614D80x5ZXyogwIAOw==}] set ::tktree::imgexpand [image create photo .tktreeclosebm -data { R0lGODdhCQAJAIAAAAEBAf///ywAAAAACQAJAAACEYSPoRu28KCSDSJLc44s3lMAADs=}] ###Default images for groups and children set ::tktree::imgsubgroups [image create photo .tktreeimgfolder -data { R0lGODlhEAANAKIAANnZ2Xh4eLi4uPj4APj4+AAAAP///////yH5BAEAAAAA LAAAAAAQAA0AAANkCIChiqDLITgyEgi6GoIjIyMYugCBpMsaWBA0giMjIzgy UYBBMjIoIyODEgVBODIygiMjE1gQJIMyMjIoI1GAQSMjODIyghMFQSgjI4My MhJYEDSCIyMjODJRgKHLXAiApcsMmAA7}] set ::tktree::imgchildren [image create photo .tktreeimgfile -data { R0lGODlhDQAQAKIAANnZ2Xh4ePj4+Li4uAAAAP///////////yH5BAEAAAAA LAAAAAANABAAAANSGLoLgACBoqsRCBAoujqCASGDojtESCEihCREIjgUKLo8 hCGCpCsySIGiy0MYIki6IoMUKLo8hCGCpCsySIGiy0MYKLo8hIGiy0MYOLo8 SLrMCQA7}] #### Swtich all subgroups of a layer to open or close proc ::tktree::switchlayer {win opn {layer /}} { variable cfg foreach child $cfg($win,$layer:subgroups) { set cfg($win,$child:open) $opn switchlayer $win $opn $child } buildwhenidle $win } #### will open or close the item given proc ::tktree::switchstate {win item} { set ::tktree::cfg($win,$item:open) [expr ! $::tktree::cfg($win,$item:open)] buildwhenidle $win } #### Select the next item up or down proc ::tktree::updown {win down} { variable cfg set index [lsearch -exact $cfg($win,sortlist) $cfg($win,selection)] if {$down} {incr index} {incr index -1} if {$index < 0} {set index end} elseif {$index >= [llength $cfg($win,sortlist)]} {set index 0} setselection $win [lindex $cfg($win,sortlist) $index] } #### left-right button binding commands proc ::tktree::leftright {win right} { variable cfg set item $cfg($win,selection) set index [lsearch -exact $cfg($win,sortlist) $item] set parentindex [lsearch -exact $cfg($win,sortlist) [file dirname $item]] if {$parentindex == -1} {set parentindex [expr $index - 1]} if {$cfg($win,$item:group)} { if {$right} { if {$cfg($win,$item:open)} {incr index} {set cfg($win,$item:open) 1} } else { if {$cfg($win,$item:open)} {set cfg($win,$item:open) 0} {set index $parentindex} } } else { if {$right} {incr index} {set index $parentindex} } if {$index < 0} {set index end} elseif {$index >= [llength $cfg($win,sortlist)]} {set index 0} setselection $win [lindex $cfg($win,sortlist) $index] buildwhenidle $win } #### will return the pathname of the item at x and y cooridinates proc ::tktree::labelat {win x y} { set x [$win canvasx $x]; set y [$win canvasy $y] foreach m [$win find overlapping $x $y $x $y] { if {[info exists ::tktree::cfg($win,tag:$m)]} {return $::tktree::cfg($win,tag:$m)} } return "" } #### will return the path of the current selection in the given tree widget proc ::tktree::getselection {win} { return $::tktree::cfg($win,selection) } #### adjust the scrollview to show the selected item as needed proc ::tktree::scrolladjust {win tag} { update set item [$win bbox $tag] set region [$win cget -scrollregion] foreach {axis idx1 idx2} {yview 1 3 xview 0 2} { set range [expr abs([lindex $region $idx2]) - abs([lindex $region $idx1])] set itemtop [lindex $item $idx1]; set itembot [lindex $item $idx2] set viewtop [expr $range * [lindex [$win $axis] 0]] set viewbot [expr $range * [lindex [$win $axis] 1]] if {$itembot > $viewbot} {$win $axis moveto [expr ($itembot. - $viewbot + $viewtop) / $range]} if {$itemtop < $viewtop} {$win $axis moveto [expr $itemtop. / $range]} } } #### will set the current selection to the given item on the given tree proc ::tktree::setselection {win item} { variable cfg if {![llength $cfg($win,sortlist)]} {return} if {$item eq ""} {set item [lindex $cfg($win,sortlist) 0]} if {![info exists cfg($win,$item:tag)]} {set item [lindex $cfg($win,sortlist) 0]} if {[$win gettags $cfg($win,$item:tag)] ne ""} { $win select from $cfg($win,$item:tag) 0 $win select to $cfg($win,$item:tag) end set cfg($win,selection) $item scrolladjust $win $cfg($win,$item:tag) } { setselection $win "/[lindex $cfg($win,/:sortlist) 0]" } } #### will delete the item given from the tree given proc ::tktree::delitem {win item} { variable cfg if {$item eq "/"} { array unset cfg $win,* ; catch {destroy $win} } { set group [file dirname $item] if {$cfg($win,$item:group)} {set type subgroups} {set type children} set index [lsearch -exact $cfg($win,$group:$type) $item] set cfg($win,$group:$type) [lreplace $cfg($win,$group:$type) $index $index] array unset cfg $win,$item* buildwhenidle $win } } #### create a new item in the tree and rebuild the widget proc ::tktree::newitem {win item args} { variable cfg if {[string index $item 0] ne "/"} {set item /$item} if {[string index $item end] eq "/"} { set subgroup 1 set type subgroups set item [string range $item 0 end-1] set cfg($win,$item:command) [list ::tktree::switchstate $win $item] } { set subgroup 0 set type children set cfg($win,$item:command) {} } #Build parent group if needed set group [file dirname $item] if {![info exists cfg($win,$group:open)]} {newitem $win "$group\/"} lappend cfg($win,$group:$type) $item #Configure the new item set cfg($win,$item:group) $subgroup set cfg($win,$item:subgroups) {} set cfg($win,$item:children) {} set cfg($win,$item:sortlist) {} set cfg($win,$item:tags) {} set cfg($win,$item:open) 0 set cfg($win,$item:image) {} set cfg($win,$item:textcolor) $cfg($win,textcolor) set cfg($win,$item:font) $cfg($win,font) if {$cfg($win,images)} {set cfg($win,$item:image) [eval list \$::tktree::img$type]} foreach {confitem confval} $args { switch -exact -- $confitem { -textcolor {set cfg($win,$item:textcolor) $confval} -command {set cfg($win,$item:command) $confval} -image {set cfg($win,$item:image) $confval} -font {set cfg($win,$item:font) $confval} } } buildwhenidle $win } #### Draw the given layer of the tree on the canvas starting at xposition proc ::tktree::buildlayer {win layer xpos} { variable cfg #Record y positions for vertical line later on set ystart $cfg($win,y); set yend $cfg($win,y) if {$layer eq "/"} {set cfg($win,sortlist) ""} foreach child $cfg($win,$layer:sortlist) { lappend cfg($win,sortlist) $child #Check spacing required for images set imgwidth 0; set imgheight 0 if {[string length $cfg($win,$child:image)]} { set imgwidth [expr ([image width $cfg($win,$child:image)] + 2) / 2] set imgheight [expr ([image height $cfg($win,$child:image)] + 2) / 2] } #find X-axis points for image, horiz line, and text if {$imgwidth} { set centerX [expr $imgwidth + $xpos + 7] set rightX [expr $xpos + 7] set textX [expr ($imgwidth * 2) + $xpos + 10] } { set centerX [expr $xpos + 10] set rightX [expr $centerX + 4] set textX [expr $rightX + 1] } #Find the proper amount to increment the y axis set fontheight [lindex [font metrics $cfg($win,$child:font)] 5] set yincr [expr ($fontheight + 1) / 2] if {$imgheight > $yincr} {set yincr $imgheight} incr cfg($win,y) $yincr #Draw the horizonal line $win create line $xpos $cfg($win,y) $rightX $cfg($win,y) -fill $cfg($win,linecolor) set yend $cfg($win,y) #Draw the image, if it exists if {$imgwidth} { set it [$win create image $centerX $cfg($win,y) -image $cfg($win,$child:image)] $win bind $it <1> [list ::tktree::setselection $win $child] } #Draw text and store tags for reference set cfg($win,$child:tag) [$win create text $textX $cfg($win,y) \ -text [file tail $child] -font $cfg($win,$child:font) -anchor w -tags x -fill $cfg($win,$child:textcolor)] set cfg($win,tag:$cfg($win,$child:tag)) $child #Command binding $win bind $cfg($win,$child:tag) <1> [list ::tktree::setselection $win $child] $win bind $cfg($win,$child:tag) $cfg($win,$child:command) #next step up on the y axis incr cfg($win,y) $yincr #If its a group, add open-close functionality if {$cfg($win,$child:group)} { if {$cfg($win,$child:open)} {set img collapse} {set img expand} set ocimg [$win create image $xpos [expr $cfg($win,y) - $yincr] -image [eval list \$::tktree::img$img]] $win bind $ocimg <1> [list ::tktree::switchstate $win $child] if {$cfg($win,$child:open)} {buildlayer $win $child $centerX} } } #Vertical line $win lower [$win create line $xpos [expr $ystart - 7] $xpos $yend -fill $cfg($win,linecolor)] } #### sort the layer by subgroups then children proc ::tktree::sortlayer {win {layer /}} { variable cfg set cfg($win,$layer:subgroups) [lsort -dictionary $cfg($win,$layer:subgroups)] set cfg($win,$layer:children) [lsort -dictionary $cfg($win,$layer:children)] set cfg($win,$layer:sortlist) [join [list $cfg($win,$layer:subgroups) $cfg($win,$layer:children)]] foreach group $cfg($win,$layer:subgroups) {sortlayer $win $group} } #### build the tree at the given path proc ::tktree::buildtree {win} { variable cfg $win delete all sortlayer $win set xpos 5 set cfg($win,y) 5 #Draw global expand/contract button, if needed if {[string length $cfg($win,/:subgroups)] && $cfg($win,expandall)} { set exp 0 foreach subgroup $cfg($win,/:subgroups) {incr exp $cfg($win,$subgroup:open)} if {$exp} {set type collapse} {set type expand} set ocimg [$win create image 1 1 -image [eval list \$::tktree::img$type] -anchor w] $win bind $ocimg <1> [list ::tktree::switchlayer $win [expr ! $exp]] } #Build the layers and set initial selection buildlayer $win / $xpos $win config -scrollregion [$win bbox all] setselection $win $cfg($win,selection) } #### internal use - set up a handle to build the tree when everything is idle proc ::tktree::buildwhenidle {win} { catch {after cancel $::tktree::cfg($win,buildHandle)} set ::tktree::cfg($win,buildHandle) [after idle [list ::tktree::buildtree $win]] } #### will create a new tree widget at the given path proc ::tktree::treecreate {win args} { variable cfg #Default configuration for new tree set cfg($win,selection) {} set cfg($win,selidx) {} set cfg($win,/:subgroups) {} set cfg($win,/:children) {} set cfg($win,/:open) 1 set cfg($win,images) 1 set cfg($win,expandall) 1 set cfg($win,linecolor) black set cfg($win,textcolor) black set cfg($win,font) {-family Helvetica -size 10} #Parse and setup custom configuration options set canvascfg "" foreach {item val} $args { switch -- $item { -linecolor {set cfg($win,linecolor) $val} -textcolor {set cfg($win,textcolor) $val} -font {set cfg($win,font) $val} -images {set cfg($win,images) $val} -expandall {set cfg($win,expandall) $val} default {lappend canvascfg $item $val} } } #Build the canvas eval {canvas $win -takefocus 1} $canvascfg bind $win [list ::tktree::delitem $win /] bind $win <1> [list focus $win] bind $win {eval $::tktree::cfg(%W,[::tktree::getselection %W]:command)} bind $win {eval $::tktree::cfg(%W,[::tktree::getselection %W]:command)} bind $win [list ::tktree::updown $win 0] bind $win [list ::tktree::updown $win 1] bind $win [list ::tktree::leftright $win 0] bind $win [list ::tktree::leftright $win 1] #Build the tree when idle buildwhenidle $win } }