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tree.tcl
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# ------------------------------------------------------------------------------
# tree.tcl
# This file is part of Unifix BWidget Toolkit
# $Id: tree.tcl,v 1.1.1.1 1996/02/22 06:05:56 daniel Exp $
# ------------------------------------------------------------------------------
# Index of commands:
# - Tree::create
# - Tree::configure
# - Tree::cget
# - Tree::insert
# - Tree::itemconfigure
# - Tree::itemcget
# - Tree::bindText
# - Tree::bindImage
# - Tree::delete
# - Tree::move
# - Tree::reorder
# - Tree::selection
# - Tree::exists
# - Tree::parent
# - Tree::index
# - Tree::nodes
# - Tree::see
# - Tree::opentree
# - Tree::closetree
# - Tree::edit
# - Tree::xview
# - Tree::yview
# - Tree::_update_edit_size
# - Tree::_destroy
# - Tree::_see
# - Tree::_recexpand
# - Tree::_subdelete
# - Tree::_update_scrollregion
# - Tree::_cross_event
# - Tree::_draw_node
# - Tree::_draw_subnodes
# - Tree::_update_nodes
# - Tree::_draw_tree
# - Tree::_redraw_tree
# - Tree::_redraw_selection
# - Tree::_redraw_idle
# - Tree::_drag_cmd
# - Tree::_drop_cmd
# - Tree::_over_cmd
# - Tree::_auto_scroll
# - Tree::_scroll
# ------------------------------------------------------------------------------
namespace eval Tree {
namespace eval Node {
Widget::declare Tree::Node {
{-text String "" 0}
{-font TkResource "" 0 listbox}
{-image TkResource "" 0 label}
{-window String "" 0}
{-fill TkResource black 0 {listbox -foreground}}
{-data String "" 0}
{-open Boolean 0 0}
{-drawcross Enum auto 0 {auto allways never}}
}
}
Widget::tkinclude Tree canvas :cmd \
remove {-insertwidth -insertbackground -insertborderwidth -insertofftime \
-insertontime -selectborderwidth -closeenough -confine -scrollregion \
-xscrollincrement -yscrollincrement -width -height} \
initialize {-relief sunken -borderwidth 2 -takefocus 1 \
-highlightthickness 1 -width 200}
Widget::declare Tree {
{-deltax Int 10 0 {=0 ""}}
{-deltay Int 15 0 {=0 ""}}
{-padx Int 20 0 {=0 ""}}
{-background TkResource "" 0 listbox}
{-selectbackground TkResource "" 0 listbox}
{-selectforeground TkResource "" 0 listbox}
{-width TkResource "" 0 listbox}
{-height TkResource "" 0 listbox}
{-showlines Boolean 1 0}
{-linesfill TkResource black 0 {frame -background}}
{-linestipple TkResource "" 0 {label -bitmap}}
{-redraw Boolean 1 0}
{-opencmd String "" 0}
{-closecmd String "" 0}
{-dropovermode Flag "wpn" 0 "wpn"}
{-bg Synonym -background}
}
DragSite::include Tree "TREE_NODE" 1
DropSite::include Tree {
TREE_NODE {copy {} move {}}
}
Widget::addmap Tree "" :cmd {-deltay -yscrollincrement}
proc ::Tree { path args } { return [eval Tree::create $path $args] }
proc use {} {}
variable _edit
}
# ------------------------------------------------------------------------------
# Command Tree::create
# ------------------------------------------------------------------------------
proc Tree::create { path args } {
variable $path
upvar 0 $path data
Widget::init Tree $path $args
set data(root) {{}}
set data(selnodes) {}
set data(upd,level) 0
set data(upd,nodes) {}
set data(upd,afterid) ""
set data(dnd,scroll) ""
set data(dnd,afterid) ""
set data(dnd,selnodes) {}
set data(dnd,node) ""
set path [eval canvas $path [Widget::subcget $path :cmd] \
-width [expr {[Widget::getoption $path -width]*8}] \
-height [expr {[Widget::getoption $path -height]*[Widget::getoption $path -deltay]}] \
-xscrollincrement 8]
$path bind cross <ButtonPress-1> {Tree::_cross_event %W}
bind $path <Configure> "Tree::_update_scrollregion $path"
bind $path <Destroy> "Tree::_destroy $path"
DragSite::setdrag $path $path Tree::_init_drag_cmd [Widget::getoption $path -dragendcmd] 1
DropSite::setdrop $path $path Tree::_over_cmd Tree::_drop_cmd 1
rename $path ::$path:cmd
proc ::$path { cmd args } "return \[eval Tree::\$cmd $path \$args\]"
return $path
}
# ------------------------------------------------------------------------------
# Command Tree::configure
# ------------------------------------------------------------------------------
proc Tree::configure { path args } {
variable $path
upvar 0 $path data
set res [Widget::configure $path $args]
set ch1 [expr {[Widget::hasChanged $path -deltax val] |
[Widget::hasChanged $path -deltay dy] |
[Widget::hasChanged $path -padx val] |
[Widget::hasChanged $path -showlines val]}]
set ch2 [expr {[Widget::hasChanged $path -selectbackground val] |
[Widget::hasChanged $path -selectforeground val]}]
if { [Widget::hasChanged $path -linesfill fill] |
[Widget::hasChanged $path -linestipple stipple] } {
$path:cmd itemconfigure line -fill $fill -stipple $stipple
$path:cmd itemconfigure cross -foreground $fill
}
if { $ch1 } {
_redraw_idle $path 3
} elseif { $ch2 } {
_redraw_idle $path 1
}
if { [Widget::hasChanged $path -height h] } {
$path:cmd configure -height [expr {$h*$dy}]
}
if { [Widget::hasChanged $path -width w] } {
$path:cmd configure -width [expr {$w*8}]
}
if { [Widget::hasChanged $path -redraw bool] && $bool } {
set upd $data(upd,level)
set data(upd,level) 0
_redraw_idle $path $upd
}
set force [Widget::hasChanged $path -dragendcmd dragend]
DragSite::setdrag $path $path Tree::_init_drag_cmd $dragend $force
DropSite::setdrop $path $path Tree::_over_cmd Tree::_drop_cmd
return $res
}
# ------------------------------------------------------------------------------
# Command Tree::cget
# ------------------------------------------------------------------------------
proc Tree::cget { path option } {
return [Widget::cget $path $option]
}
# ------------------------------------------------------------------------------
# Command Tree::insert
# ------------------------------------------------------------------------------
proc Tree::insert { path index parent node args } {
variable $path
upvar 0 $path data
if { [info exists data($node)] } {
return -code error "node \"$node\" already exists"
}
if { ![info exists data($parent)] } {
return -code error "node \"$parent\" does not exist"
}
Widget::init Tree::Node $path.$node $args
if { ![string compare $index "end"] } {
lappend data($parent) $node
} else {
incr index
set data($parent) [linsert $data($parent) $index $node]
}
set data($node) [list $parent]
if { ![string compare $parent "root"] } {
_redraw_idle $path 3
} elseif { [visible $path $parent] } {
# parent is visible...
if { [Widget::getoption $path.$parent -open] } {
# ...and opened -> redraw whole
_redraw_idle $path 3
} else {
# ...and closed -> redraw cross
lappend data(upd,nodes) $parent 8
_redraw_idle $path 2
}
}
return $node
}
# ------------------------------------------------------------------------------
# Command Tree::itemconfigure
# ------------------------------------------------------------------------------
proc Tree::itemconfigure { path node args } {
variable $path
upvar 0 $path data
if { ![string compare $node "root"] || ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
set result [Widget::configure $path.$node $args]
if { [visible $path $node] } {
set lopt {}
set flag 0
foreach opt {-window -image -drawcross -font -text -fill} {
set flag [expr {$flag << 1}]
if { [Widget::hasChanged $path.$node $opt val] } {
set flag [expr {$flag | 1}]
}
}
if { [Widget::hasChanged $path.$node -open val] } {
_redraw_idle $path 3
} elseif { $data(upd,level) < 3 && $flag } {
if { [set idx [lsearch $data(upd,nodes) $node]] == -1 } {
lappend data(upd,nodes) $node $flag
} else {
incr idx
set flag [expr {[lindex $data(upd,nodes) $idx] | $flag}]
set data(upd,nodes) [lreplace $data(upd,nodes) $idx $idx $flag]
}
_redraw_idle $path 2
}
}
return $result
}
# ------------------------------------------------------------------------------
# Command Tree::itemcget
# ------------------------------------------------------------------------------
proc Tree::itemcget { path node option } {
variable $path
upvar 0 $path data
if { ![string compare $node "root"] || ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
return [Widget::cget $path.$node $option]
}
# ------------------------------------------------------------------------------
# Command Tree::bindText
# ------------------------------------------------------------------------------
proc Tree::bindText { path event script } {
if { $script != "" } {
$path:cmd bind "node" $event \
"$script \[string range \[lindex \[$path:cmd gettags current\] 1\] 2 end\]"
} else {
$path:cmd bind "node" $event {}
}
}
# ------------------------------------------------------------------------------
# Command Tree::bindImage
# ------------------------------------------------------------------------------
proc Tree::bindImage { path event script } {
if { $script != "" } {
$path:cmd bind "img" $event \
"$script \[string range \[lindex \[$path:cmd gettags current\] 1\] 2 end\]"
} else {
$path:cmd bind "img" $event {}
}
}
# ------------------------------------------------------------------------------
# Command Tree::delete
# ------------------------------------------------------------------------------
proc Tree::delete { path args } {
variable $path
upvar 0 $path data
foreach lnodes $args {
foreach node $lnodes {
if { [string compare $node "root"] && [info exists data($node)] } {
set parent [lindex $data($node) 0]
set idx [lsearch $data($parent) $node]
set data($parent) [lreplace $data($parent) $idx $idx]
_subdelete $path $node
}
}
}
set sel $data(selnodes)
set data(selnodes) {}
eval selection $path set $sel
_redraw_idle $path 3
}
# ------------------------------------------------------------------------------
# Command Tree::move
# ------------------------------------------------------------------------------
proc Tree::move { path parent node index } {
variable $path
upvar 0 $path data
if { ![string compare $node "root"] || ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
if { ![info exists data($parent)] } {
return -code error "node \"$parent\" does not exist"
}
set p $parent
while { [string compare $p "root"] } {
if { ![string compare $p $node] } {
return -code error "node \"$parent\" is a descendant of \"$node\""
}
set p [parent $path $p]
}
set oldp [lindex $data($node) 0]
set idx [lsearch $data($oldp) $node]
set data($oldp) [lreplace $data($oldp) $idx $idx]
set data($node) [concat [list $parent] [lrange $data($node) 1 end]]
if { ![string compare $index "end"] } {
lappend data($parent) $node
} else {
incr index
set data($parent) [linsert $data($parent) $index $node]
}
if { ([visible $path $oldp] && [Widget::getoption $path.$oldp -open]) ||
([visible $path $parent] && [Widget::getoption $path.$parent -open]) } {
_redraw_idle $path 3
}
}
# ------------------------------------------------------------------------------
# Command Tree::reorder
# ------------------------------------------------------------------------------
proc Tree::reorder { path node neworder } {
variable $path
upvar 0 $path data
if { ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
set children [lrange $data($node) 1 end]
if { [llength $children] } {
set children [BWidget::lreorder $children $neworder]
set data($node) [linsert $children 0 [lindex $data($node) 0]]
if { [visible $path $node] && [Widget::getoption $path.$node -open] } {
_redraw_idle $path 3
}
}
}
# ------------------------------------------------------------------------------
# Command Tree::selection
# ------------------------------------------------------------------------------
proc Tree::selection { path cmd args } {
variable $path
upvar 0 $path data
switch -- $cmd {
set {
set data(selnodes) {}
foreach node $args {
if { [info exists data($node)] } {
if { [lsearch $data(selnodes) $node] == -1 } {
lappend data(selnodes) $node
}
}
}
}
add {
foreach node $args {
if { [info exists data($node)] } {
if { [lsearch $data(selnodes) $node] == -1 } {
lappend data(selnodes) $node
}
}
}
}
remove {
foreach node $args {
if { [set idx [lsearch $data(selnodes) $node]] != -1 } {
set data(selnodes) [lreplace $data(selnodes) $idx $idx]
}
}
}
clear {
set data(selnodes) {}
}
get {
return $data(selnodes)
}
default {
return
}
}
_redraw_idle $path 1
}
# ------------------------------------------------------------------------------
# Command Tree::exists
# ------------------------------------------------------------------------------
proc Tree::exists { path node } {
variable $path
upvar 0 $path data
return [info exists data($node)]
}
# ------------------------------------------------------------------------------
# Command Tree::visible
# ------------------------------------------------------------------------------
proc Tree::visible { path node } {
set idn [$path:cmd find withtag n:$node]
return [llength $idn]
}
# ------------------------------------------------------------------------------
# Command Tree::parent
# ------------------------------------------------------------------------------
proc Tree::parent { path node } {
variable $path
upvar 0 $path data
if { ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
return [lindex $data($node) 0]
}
# ------------------------------------------------------------------------------
# Command Tree::index
# ------------------------------------------------------------------------------
proc Tree::index { path node } {
variable $path
upvar 0 $path data
if { ![string compare $node "root"] || ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
set parent [lindex $data($node) 0]
return [expr {[lsearch $data($parent) $node] - 1}]
}
# ------------------------------------------------------------------------------
# Command Tree::nodes
# ------------------------------------------------------------------------------
proc Tree::nodes { path node } {
variable $path
upvar 0 $path data
if { ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
return [lrange $data($node) 1 end]
}
# ------------------------------------------------------------------------------
# Command Tree::see
# ------------------------------------------------------------------------------
proc Tree::see { path node } {
set idn [$path:cmd find withtag n:$node]
if { $idn != "" } {
Tree::_see $path $idn left
}
}
# ------------------------------------------------------------------------------
# Command Tree::opentree
# ------------------------------------------------------------------------------
proc Tree::opentree { path node } {
variable $path
upvar 0 $path data
if { ![string compare $node "root"] || ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
_recexpand $path $node 1 [Widget::getoption $path -opencmd]
_redraw_idle $path 3
}
# ------------------------------------------------------------------------------
# Command Tree::closetree
# ------------------------------------------------------------------------------
proc Tree::closetree { path node } {
variable $path
upvar 0 $path data
if { ![string compare $node "root"] || ![info exists data($node)] } {
return -code error "node \"$node\" does not exist"
}
_recexpand $path $node 0 [Widget::getoption $path -closecmd]
_redraw_idle $path 3
}
# ------------------------------------------------------------------------------
# Command Tree::edit
# ------------------------------------------------------------------------------
proc Tree::edit { path node text {verifycmd ""} {clickres 0} {select 1}} {
variable _edit
set idn [$path:cmd find withtag n:$node]
if { $idn != "" } {
Tree::_see $path $idn right
Tree::_see $path $idn left
set oldfg [$path:cmd itemcget $idn -fill]
set sbg [Widget::getoption $path -selectbackground]
set coords [$path:cmd coords $idn]
set x [lindex $coords 0]
set y [lindex $coords 1]
set bd [expr {[$path:cmd cget -borderwidth]+[$path:cmd cget -highlightthickness]}]
set w [expr {[winfo width $path] - 2*$bd}]
set wmax [expr {[$path:cmd canvasx $w]-$x}]
set _edit(text) $text
set _edit(wait) 0
$path:cmd itemconfigure $idn -fill [Widget::getoption $path -background]
$path:cmd itemconfigure s:$node -fill {} -outline {}
set frame [frame $path.edit \
-relief flat -borderwidth 0 -highlightthickness 0 \
-background [Widget::getoption $path -background]]
set ent [entry $frame.edit \
-width 0 \
-relief solid \
-borderwidth 1 \
-highlightthickness 0 \
-foreground [Widget::getoption $path.$node -fill] \
-background [Widget::getoption $path -background] \
-selectforeground [Widget::getoption $path -selectforeground] \
-selectbackground $sbg \
-font [Widget::getoption $path.$node -font] \
-textvariable Tree::_edit(text)]
pack $ent -ipadx 8 -anchor w
set idw [$path:cmd create window $x $y -window $frame -anchor w]
trace variable Tree::_edit(text) w "Tree::_update_edit_size $path $ent $idw $wmax"
tkwait visibility $ent
grab $frame
BWidget::focus set $ent
_update_edit_size $path $ent $idw $wmax
update
if { $select } {
$ent selection from 0
$ent selection to end
$ent icursor end
$ent xview end
}
bind $ent <Escape> {set Tree::_edit(wait) 0}
bind $ent <Return> {set Tree::_edit(wait) 1}
if { $clickres == 0 || $clickres == 1 } {
bind $frame <Button> "set Tree::_edit(wait) $clickres"
}
set ok 0
while { !$ok } {
tkwait variable Tree::_edit(wait)
if { !$_edit(wait) || $verifycmd == "" ||
[uplevel \#0 $verifycmd [list $_edit(text)]] } {
set ok 1
}
}
trace vdelete Tree::_edit(text) w "Tree::_update_edit_size $path $ent $idw $wmax"
grab release $frame
BWidget::focus release $ent
destroy $frame
$path:cmd delete $idw
$path:cmd itemconfigure $idn -fill $oldfg
$path:cmd itemconfigure s:$node -fill $sbg -outline $sbg
if { $_edit(wait) } {
return $_edit(text)
}
}
return ""
}
# ------------------------------------------------------------------------------
# Command Tree::xview
# ------------------------------------------------------------------------------
proc Tree::xview { path args } {
return [eval $path:cmd xview $args]
}
# ------------------------------------------------------------------------------
# Command Tree::yview
# ------------------------------------------------------------------------------
proc Tree::yview { path args } {
return [eval $path:cmd yview $args]
}
# ------------------------------------------------------------------------------
# Command Tree::_update_edit_size
# ------------------------------------------------------------------------------
proc Tree::_update_edit_size { path entry idw wmax args } {
set entw [winfo reqwidth $entry]
if { $entw+8 >= $wmax } {
$path:cmd itemconfigure $idw -width $wmax
} else {
$path:cmd itemconfigure $idw -width 0
}
}
# ------------------------------------------------------------------------------
# Command Tree::_destroy
# ------------------------------------------------------------------------------
proc Tree::_destroy { path } {
variable $path
upvar 0 $path data
if { $data(upd,afterid) != "" } {
after cancel $data(upd,afterid)
}
if { $data(dnd,afterid) != "" } {
after cancel $data(dnd,afterid)
}
foreach node [lrange $data(root) 1 end] {
_subdelete $path $node
}
Widget::destroy $path
unset data
rename $path {}
}
# ------------------------------------------------------------------------------
# Command Tree::_see
# ------------------------------------------------------------------------------
proc Tree::_see { path idn side } {
set bbox [$path:cmd bbox $idn]
set scrl [$path:cmd cget -scrollregion]
set ymax [lindex $scrl 3]
set dy [$path:cmd cget -yscrollincrement]
set yv [$path yview]
set yv0 [expr {round([lindex $yv 0]*$ymax/$dy)}]
set yv1 [expr {round([lindex $yv 1]*$ymax/$dy)}]
set y [expr {int([lindex [$path:cmd coords $idn] 1]/$dy)}]
if { $y < $yv0 } {
$path:cmd yview scroll [expr {$y-$yv0}] units
} elseif { $y >= $yv1 } {
$path:cmd yview scroll [expr {$y-$yv1+1}] units
}
set xmax [lindex $scrl 2]
set dx [$path:cmd cget -xscrollincrement]
set xv [$path xview]
if { ![string compare $side "right"] } {
set xv1 [expr {round([lindex $xv 1]*$xmax/$dx)}]
set x1 [expr {int([lindex $bbox 2]/$dx)}]
if { $x1 >= $xv1 } {
$path:cmd xview scroll [expr {$x1-$xv1+1}] units
}
} else {
set xv0 [expr {round([lindex $xv 0]*$xmax/$dx)}]
set x0 [expr {int([lindex $bbox 0]/$dx)}]
if { $x0 < $xv0 } {
$path:cmd xview scroll [expr {$x0-$xv0}] units
}
}
}
# ------------------------------------------------------------------------------
# Command Tree::_recexpand
# ------------------------------------------------------------------------------
proc Tree::_recexpand { path node expand cmd } {
variable $path
upvar 0 $path data
if { [Widget::getoption $path.$node -open] != $expand } {
Widget::setoption $path.$node -open $expand
if { $cmd != "" } {
uplevel \#0 $cmd $node
}
}
foreach subnode [lrange $data($node) 1 end] {
_recexpand $path $subnode $expand $cmd
}
}
# ------------------------------------------------------------------------------
# Command Tree::_subdelete
# ------------------------------------------------------------------------------
proc Tree::_subdelete { path node } {
variable $path
upvar 0 $path data
foreach subnode [lrange $data($node) 1 end] {
_subdelete $path $subnode
}
unset data($node)
if { [set win [Widget::getoption $path.$node -window]] != "" } {
destroy $win
}
Widget::destroy $path.$node
}
# ------------------------------------------------------------------------------
# Command Tree::_update_scrollregion
# ------------------------------------------------------------------------------
proc Tree::_update_scrollregion { path } {
set bd [expr {2*([$path:cmd cget -borderwidth]+[$path:cmd cget -highlightthickness])}]
set w [expr {[winfo width $path] - $bd}]
set h [expr {[winfo height $path] - $bd}]
set xinc [$path:cmd cget -xscrollincrement]
set yinc [$path:cmd cget -yscrollincrement]
set bbox [$path:cmd bbox all]
if { [llength $bbox] } {
set xs [lindex $bbox 2]
set ys [lindex $bbox 3]
if { $w < $xs } {
set w [expr {int($xs)}]
if { [set r [expr {$w % $xinc}]] } {
set w [expr {$w+$xinc-$r}]
}
}
if { $h < $ys } {
set h [expr {int($ys)}]
if { [set r [expr {$h % $yinc}]] } {
set h [expr {$h+$yinc-$r}]
}
}
}
$path:cmd configure -scrollregion [list 0 0 $w $h]
}
# ------------------------------------------------------------------------------
# Command Tree::_cross_event
# ------------------------------------------------------------------------------
proc Tree::_cross_event { path } {
variable $path
upvar 0 $path data
set node [string range [lindex [$path:cmd gettags current] 1] 2 end]
if { [Widget::getoption $path.$node -open] } {
if { [set cmd [Widget::getoption $path -closecmd]] != "" } {
uplevel \#0 $cmd $node
}
Widget::setoption $path.$node -open 0
} else {
if { [set cmd [Widget::getoption $path -opencmd]] != "" } {
uplevel \#0 $cmd $node
}
Widget::setoption $path.$node -open 1
}
_redraw_idle $path 3
}
# ------------------------------------------------------------------------------
# Command Tree::_draw_node
# ------------------------------------------------------------------------------
proc Tree::_draw_node { path node x0 y0 deltax deltay padx showlines } {
global env
variable $path
upvar 0 $path data
set x1 [expr {$x0+$deltax+5}]
set y1 $y0
if { $showlines } {
$path:cmd create line $x0 $y0 $x1 $y0 \
-fill [Widget::getoption $path -linesfill] \
-stipple [Widget::getoption $path -linestipple] \
-tags line
}
$path:cmd create text [expr {$x1+$padx}] $y0 \
-text [Widget::getoption $path.$node -text] \
-fill [Widget::getoption $path.$node -fill] \
-font [Widget::getoption $path.$node -font] \
-anchor w \
-tags "node n:$node"
set len [expr {[llength $data($node)] > 1}]
set dc [Widget::getoption $path.$node -drawcross]
set exp [Widget::getoption $path.$node -open]
if { $len && $exp } {
set y1 [_draw_subnodes $path [lrange $data($node) 1 end] \
[expr {$x0+$deltax}] $y0 $deltax $deltay $padx $showlines]
}
if { [string compare $dc "never"] && ($len || ![string compare $dc "allways"]) } {
if { $exp } {
set bmp [file join $env(BWIDGET_LIBRARY) "images" "minus.xbm"]
} else {
set bmp [file join $env(BWIDGET_LIBRARY) "images" "plus.xbm"]
}
$path:cmd create bitmap $x0 $y0 \
-bitmap @$bmp \
-background [$path:cmd cget -background] \
-foreground [Widget::getoption $path -linesfill] \
-tags "cross c:$node" -anchor c
}
if { [set win [Widget::getoption $path.$node -window]] != "" } {
$path:cmd create window $x1 $y0 -window $win -anchor w -tags "win i:$node"
} elseif { [set img [Widget::getoption $path.$node -image]] != "" } {
$path:cmd create image $x1 $y0 -image $img -anchor w -tags "img i:$node"
}
return $y1
}
# ------------------------------------------------------------------------------
# Command Tree::_draw_subnodes
# ------------------------------------------------------------------------------
proc Tree::_draw_subnodes { path nodes x0 y0 deltax deltay padx showlines } {
set y1 $y0
foreach node $nodes {
set yp $y1
set y1 [_draw_node $path $node $x0 [expr {$y1+$deltay}] $deltax $deltay $padx $showlines]
}
if { $showlines && [llength $nodes] } {
set id [$path:cmd create line $x0 $y0 $x0 [expr {$yp+$deltay}] \
-fill [Widget::getoption $path -linesfill] \
-stipple [Widget::getoption $path -linestipple] \
-tags line]
$path:cmd lower $id
}
return $y1
}
# ------------------------------------------------------------------------------
# Command Tree::_update_nodes
# ------------------------------------------------------------------------------
proc Tree::_update_nodes { path } {
global env
variable $path
upvar 0 $path data
set deltax [Widget::getoption $path -deltax]
set padx [Widget::getoption $path -padx]
foreach {node flag} $data(upd,nodes) {
set idn [$path:cmd find withtag "n:$node"]
if { $idn == "" } {
continue
}
set c [$path:cmd coords $idn]
set x0 [expr {[lindex $c 0]-$deltax}]
set y0 [lindex $c 1]
if { $flag & 48 } {
# -window or -image modified
set win [Widget::getoption $path.$node -window]
set img [Widget::getoption $path.$node -image]
set idi [$path:cmd find withtag i:$node]
set type [lindex [$path:cmd gettags $idi] 0]
if { [string length $win] } {
if { ![string compare $type "win"] } {
$path:cmd itemconfigure $idi -window $win
} else {
$path:cmd delete $idi
$path:cmd create window $x0 $y0 -window $win -anchor w -tags "win i:$node"
}
} elseif { [string length $img] } {
if { ![string compare $type "img"] } {
$path:cmd itemconfigure $idi -image $img
} else {
$path:cmd delete $idi
$path:cmd create image $x0 $y0 -image $img -anchor w -tags "img i:$node"
}
} else {
$path:cmd delete $idi
}
}
if { $flag & 8 } {
# -drawcross modified
set len [expr {[llength $data($node)] > 1}]
set dc [Widget::getoption $path.$node -drawcross]
set exp [Widget::getoption $path.$node -open]
set idc [$path:cmd find withtag c:$node]
if { [string compare $dc "never"] && ($len || ![string compare $dc "allways"]) } {
if { $exp } {
set bmp [file join $env(BWIDGET_LIBRARY) "images" "minus.xbm"]
} else {
set bmp [file join $env(BWIDGET_LIBRARY) "images" "plus.xbm"]
}
if { $idc == "" } {
$path:cmd create bitmap $x0 $y0 \
-bitmap @$bmp \
-background [$path:cmd cget -background] \
-foreground [Widget::getoption $path -linesfill] \
-tags "cross c:$node" -anchor c
} else {
$path:cmd itemconfigure $idc -bitmap @$bmp
}
} else {
$path:cmd delete $idc
}
}
if { $flag & 7 } {
# -font, -text or -fill modified
$path:cmd itemconfigure $idn \
-text [Widget::getoption $path.$node -text] \
-fill [Widget::getoption $path.$node -fill] \
-font [Widget::getoption $path.$node -font]
}
}
}
# ------------------------------------------------------------------------------
# Command Tree::_draw_tree
# ------------------------------------------------------------------------------
proc Tree::_draw_tree { path } {
variable $path
upvar 0 $path data
$path:cmd delete all
$path:cmd configure -cursor watch
_draw_subnodes $path [lrange $data(root) 1 end] 8 \
[expr {-[Widget::getoption $path -deltay]/2}] \
[Widget::getoption $path -deltax] \
[Widget::getoption $path -deltay] \
[Widget::getoption $path -padx] \
[Widget::getoption $path -showlines]
$path:cmd configure -cursor [Widget::getoption $path -cursor]
}
# ------------------------------------------------------------------------------
# Command Tree::_redraw_tree
# ------------------------------------------------------------------------------
proc Tree::_redraw_tree { path } {
variable $path
upvar 0 $path data
if { [Widget::getoption $path -redraw] } {
if { $data(upd,level) == 2 } {
_update_nodes $path
} elseif { $data(upd,level) == 3 } {
_draw_tree $path
}
_redraw_selection $path
_update_scrollregion $path
set data(upd,nodes) {}
set data(upd,level) 0
set data(upd,afterid) ""
}
}
# ------------------------------------------------------------------------------
# Command Tree::_redraw_selection
# ------------------------------------------------------------------------------
proc Tree::_redraw_selection { path } {
variable $path
upvar 0 $path data
set selbg [Widget::getoption $path -selectbackground]
set selfg [Widget::getoption $path -selectforeground]
foreach id [$path:cmd find withtag sel] {
set node [string range [lindex [$path:cmd gettags $id] 1] 2 end]
$path:cmd itemconfigure "n:$node" -fill [Widget::getoption $path.$node -fill]
}
$path:cmd delete sel
foreach node $data(selnodes) {
set bbox [$path:cmd bbox "n:$node"]
if { [llength $bbox] } {
set id [eval $path:cmd create rectangle $bbox -fill $selbg -outline $selbg -tags [list "sel s:$node"]]
$path:cmd itemconfigure "n:$node" -fill $selfg
$path:cmd lower $id
}
}
}
# ------------------------------------------------------------------------------
# Command Tree::_redraw_idle
# ------------------------------------------------------------------------------
proc Tree::_redraw_idle { path level } {
variable $path
upvar 0 $path data
if { [Widget::getoption $path -redraw] && $data(upd,afterid) == "" } {
set data(upd,afterid) [after idle Tree::_redraw_tree $path]
}
if { $level > $data(upd,level) } {
set data(upd,level) $level
}
return ""
}
# --------------------------------------------------------------------------------------------
# Commandes pour le Drag and Drop
# ------------------------------------------------------------------------------
# Command Tree::_init_drag_cmd
# ------------------------------------------------------------------------------
proc Tree::_init_drag_cmd { path X Y top } {
set ltags [$path:cmd gettags current]
set item [lindex $ltags 0]
if { ![string compare $item "node"] ||
![string compare $item "img"] ||
![string compare $item "win"] } {
set node [string range [lindex $ltags 1] 2 end]
if { [set cmd [Widget::getoption $path -draginitcmd]] != "" } {
return [uplevel \#0 $cmd [list $path $node $top]]
}
if { [set type [Widget::getoption $path -dragtype]] == "" } {
set type "TREE_NODE"
}
if { [set img [Widget::getoption $path.$node -image]] != "" } {
pack [label $top.l -image $img -padx 0 -pady 0]
}
return [list $type {copy move link} $node]
}
return {}
}
# ------------------------------------------------------------------------------
# Command Tree::_drop_cmd
# ------------------------------------------------------------------------------
proc Tree::_drop_cmd { path source X Y op type dnddata } {
variable $path
upvar 0 $path data
$path:cmd delete drop
if { [string length $data(dnd,afterid)] } {
after cancel $data(dnd,afterid)
set data(dnd,afterid) ""
}
set data(dnd,scroll) ""
if { [llength $data(dnd,node)] } {
if { [set cmd [Widget::getoption $path -dropcmd]] != "" } {
return [uplevel \#0 $cmd [list $path $source $data(dnd,node) $op $type $dnddata]]
}
}
return 0
}
# ------------------------------------------------------------------------------
# Command Tree::_over_cmd
# ------------------------------------------------------------------------------
proc Tree::_over_cmd { path source event X Y op type dnddata } {
variable $path
upvar 0 $path data
if { ![string compare $event "leave"] } {
# we leave the window tree
$path:cmd delete drop
if { [string length $data(dnd,afterid)] } {
after cancel $data(dnd,afterid)
set data(dnd,afterid) ""
}
set data(dnd,scroll) ""
return 0
}
if { ![string compare $event "enter"] } {
# we enter the window tree - dnd data initialization
set mode [Widget::getoption $path -dropovermode]
set data(dnd,mode) 0
foreach c {w p n} {
set data(dnd,mode) [expr {($data(dnd,mode) << 1) | ([string first $c $mode] != -1)}]
}
set bbox [$path:cmd bbox all]
if { [llength $bbox] } {
set data(dnd,xs) [lindex $bbox 2]
} else {
set data(dnd,xs) 0
}
set data(dnd,node) {}
}
set x [expr {$X-[winfo rootx $path]}]
set y [expr {$Y-[winfo rooty $path]}]
$path:cmd delete drop
set data(dnd,node) {}
# test for auto-scroll unless mode is widget only
if { $data(dnd,mode) != 4 && [_auto_scroll $path $x $y] != "" } {
return 2
}
if { $data(dnd,mode) & 4 } {
# dropovermode includes widget
set target [list widget]
set vmode 4
} else {
set target [list ""]
set vmode 0
}
set xc [$path:cmd canvasx $x]
set xs $data(dnd,xs)
if { $xc <= $xs } {
set yc [$path:cmd canvasy $y]
set dy [$path:cmd cget -yscrollincrement]
set line [expr {int($yc/$dy)}]
set xi 0
set yi [expr {$line*$dy}]
set ys [expr {$yi+$dy}]
foreach id [$path:cmd find overlapping $xi $yi $xs $ys] {
set ltags [$path:cmd gettags $id]
set item [lindex $ltags 0]
if { ![string compare $item "node"] ||
![string compare $item "img"] ||
![string compare $item "win"] } {
# item is the label or image/window of the node
set node [string range [lindex $ltags 1] 2 end]
set xi [expr {[lindex [$path:cmd coords n:$node] 0]-[Widget::getoption $path -padx]}]
if { $data(dnd,mode) & 1 } {
# dropovermode includes node
lappend target $node
set vmode [expr {$vmode | 1}]
} else {
lappend target ""
}
if { $data(dnd,mode) & 2 } {
# dropovermode includes position
if { $yc >= $yi+$dy/2 } {
# position is after $node
if { [Widget::getoption $path.$node -open] &&
[llength $data($node)] > 1 } {
# $node is open and have subnodes
# drop position is 0 in children of $node
set parent $node
set index 0
set xli [expr {$xi-5}]
} else {
# $node is not open and doesn't have subnodes
# drop position is after $node in children of parent of $node
set parent [lindex $data($node) 0]
set index [lsearch $data($parent) $node]
set xli [expr {$xi-[Widget::getoption $path -deltax]-5}]
}
set yl $ys
} else {
# position is before $node
# drop position is before $node in children of parent of $node
set parent [lindex $data($node) 0]
set index [expr {[lsearch $data($parent) $node] - 1}]
set xli [expr {$xi-[Widget::getoption $path -deltax]-5}]
set yl $yi
}
lappend target [list $parent $index]
set vmode [expr {$vmode | 2}]
} else {
lappend target {}
}
if { ($vmode & 3) == 3 } {
# result have both node and position
# we compute what is the preferred method
if { $yc-$yi <= 3 || $ys-$yc <= 3 } {
lappend target "position"
} else {
lappend target "node"
}
}
break
}
}
}
if { $vmode && [set cmd [Widget::getoption $path -dropovercmd]] != "" } {
# user-defined dropover command
set res [uplevel \#0 $cmd [list $path $source $target $op $type $dnddata]]
set code [lindex $res 0]
set newmode 0
if { $code & 1 } {
# update vmode
set mode [lindex $res 1]
if { ($vmode & 1) && ![string compare $mode "node"] } {
set newmode 1
} elseif { ($vmode & 2) && ![string compare $mode "position"] } {
set newmode 2
} elseif { ($vmode & 4) && ![string compare $mode "widget"] } {
set newmode 4
}
}
set vmode $newmode
} else {
if { ($vmode & 3) == 3 } {
# result have both item and position
# we choose the preferred method
if { ![string compare [lindex $target 3] "position"] } {
set vmode [expr {$vmode & ~1}]
} else {
set vmode [expr {$vmode & ~2}]
}
}
if { $data(dnd,mode) == 4 || $data(dnd,mode) == 0 } {
# dropovermode is widget or empty - recall is not necessary
set code 1
} else {
set code 3
}
}
# draw dnd visual following vmode
if { $vmode & 1 } {
set data(dnd,node) [list "node" [lindex $target 1]]
$path:cmd create rectangle $xi $yi $xs $ys -tags drop
} elseif { $vmode & 2 } {
set data(dnd,node) [concat "position" [lindex $target 2]]
$path:cmd create line $xli [expr {$yl-$dy/2}] $xli $yl $xs $yl -tags drop
} elseif { $vmode & 4 } {
set data(dnd,node) [list "widget"]
} else {
set code [expr {$code & 2}]
}
if { $code & 1 } {
DropSite::setcursor based_arrow_down
} else {
DropSite::setcursor dot
}
return $code
}
# ------------------------------------------------------------------------------
# Command Tree::_auto_scroll
# ------------------------------------------------------------------------------
proc Tree::_auto_scroll { path x y } {
variable $path
upvar 0 $path data
set xmax [winfo width $path]
set ymax [winfo height $path]
set scroll {}
if { $y <= 6 } {
if { [lindex [$path:cmd yview] 0] > 0 } {
set scroll [list yview -1]
DropSite::setcursor sb_up_arrow
}
} elseif { $y >= $ymax-6 } {
if { [lindex [$path:cmd yview] 1] < 1 } {
set scroll [list yview 1]
DropSite::setcursor sb_down_arrow
}
} elseif { $x <= 6 } {
if { [lindex [$path:cmd xview] 0] > 0 } {
set scroll [list xview -1]
DropSite::setcursor sb_left_arrow
}
} elseif { $x >= $xmax-6 } {
if { [lindex [$path:cmd xview] 1] < 1 } {
set scroll [list xview 1]
DropSite::setcursor sb_right_arrow
}
}
if { [string length $data(dnd,afterid)] && [string compare $data(dnd,scroll) $scroll] } {
after cancel $data(dnd,afterid)
set data(dnd,afterid) ""
}
set data(dnd,scroll) $scroll
if { [string length $scroll] && ![string length $data(dnd,afterid)] } {
set data(dnd,afterid) [after 200 Tree::_scroll $path $scroll]
}
return $data(dnd,afterid)
}
# ------------------------------------------------------------------------------
# Command Tree::_scroll
# ------------------------------------------------------------------------------
proc Tree::_scroll { path cmd dir } {
variable $path
upvar 0 $path data
if { ($dir == -1 && [lindex [$path:cmd $cmd] 0] > 0) ||
($dir == 1 && [lindex [$path:cmd $cmd] 1] < 1) } {
$path:cmd $cmd scroll $dir units
set data(dnd,afterid) [after 100 Tree::_scroll $path $cmd $dir]
} else {
set data(dnd,afterid) ""
DropSite::setcursor dot
}
}