NgdZddlmZmZmZddlmZmZmZm Z m Z m Z ddl m Z ddlmZGddeZdZe e fd ZGd d eZGd d ZdZdZedkr edSdS)z Graphically display a Tree. )IntVarMenuTk) BoxWidget CanvasFrame CanvasWidget OvalWidget ParenWidget TextWidget)Tree)in_idleceZdZdZdZdZdZdZdZdZ dZ d Z d Z d Z d Zd ZdZdZdZdZdZdZdZdZdS)TreeSegmentWidgeta A canvas widget that displays a single segment of a hierarchical tree. Each ``TreeSegmentWidget`` connects a single "node widget" to a sequence of zero or more "subtree widgets". By default, the bottom of the node is connected to the top of each subtree by a single line. However, if the ``roof`` attribute is set, then a single triangular "roof" will connect the node to all of its children. Attributes: - ``roof``: What sort of connection to draw between the node and its subtrees. If ``roof`` is true, draw a single triangular "roof" over the subtrees. If ``roof`` is false, draw a line between each subtree and the node. Default value is false. - ``xspace``: The amount of horizontal space to leave between subtrees when managing this widget. Default value is 10. - ``yspace``: The amount of space to place between the node and its children when managing this widget. Default value is 15. - ``color``: The color of the lines connecting the node to its subtrees; and of the outline of the triangular roof. Default value is ``'#006060'``. - ``fill``: The fill color for the triangular roof. Default value is ``''`` (no fill). - ``width``: The width of the lines connecting the node to its subtrees; and of the outline of the triangular roof. Default value is 1. - ``orientation``: Determines whether the tree branches downwards or rightwards. Possible values are ``'horizontal'`` and ``'vertical'``. The default value is ``'vertical'`` (i.e., branch downwards). - ``draggable``: whether the widget can be dragged by the user. c `||_||_d|_d|_d|_d|_d|_fd|D|_ddddd |_ | ||D]}| |d|_ tj |fi|d S) zI :type node: :type subtrees: list(CanvasWidgetI) r Fc Dg|]}dddddS)r#006060fill) create_line).0ccanvass J/var/www/html/ai-engine/env/lib/python3.11/site-packages/nltk/draw/tree.py z.TreeSegmentWidget.__init__..Ps2XXX!v))!Q19)EEXXXhiddenr)rstateoutlineN)_label _subtrees _horizontal_roof_xspace_yspace_ordered_linescreate_polygon_polygon_add_child_widget _managingr__init__)selfrlabelsubtreesattribssubtrees ` rr.zTreeSegmentWidget.__init__@s  !    YXXXxXXX -- qr9.   u%%% , ,G  " "7 + + + +dF66g66666rc|}|dkr||_|jr?|jD]}||d||jddS|jD]}||d||jddS|dkr-|dkr d|_dS|dkr d |_dSt d |d kr?|jD]}||| ||j| dSt|trE|d d kr9|jt|d}||| dS|dkr||j| dS|dkrA||j||i|jD]}||||idS|dvr7|dkr||_ n |dkr||_ | |j dS|dkr ||_dStj|||dS)Nroofr)r normal orientation horizontalverticalrz*orientation must be horizontal or verticalcolorr)r!rwidth)xspaceyspacer=r>ordered)rr%r) itemconfigr+r$ ValueError isinstancetupleintr&r'updater"r(r __setitem__)r/attrvaluerls rrFzTreeSegmentWidget.__setitem___s 6>>DJz A99A%%ax%8888!!$-x!@@@@@99A%%ax%8888!!$-x!@@@@@ ] " " $$#$   *$$#$    !MNNN W__[ 1 1!!!%!0000   dmU  ; ; ; ; ; e $ $ 8aG);); CQLL)A   ae  , , , , , V^^   dm%  8 8 8 8 8 W__   dmdE] ; ; ;[ 4 4!!!dE]3333 4 4 ) ) )x$ !!$ KK $ $ $ $ $ Y  !DMMM  $T4 7 7 7 7 7rcT|dkr|jS|dkr-||j|S|dkr-||jdSt |t rT|ddkrH|jt|d}||dS|dkr|jS|d kr|j S|d kr |j rd Sd S|d kr|j Stj ||S)Nr5r<r;r!rr9rr=r>r7r8r:r?)r%ritemcgetr+rBrCr)rDr&r'r$r(r __getitem__)r/rGrIs rrLzTreeSegmentWidget.__getitem__s% 6>>:  W__;;==))$->> > W__;;==))$-CC C e $ $ 8aG);); CQLL)A;;==))!V44 4 X  <  X  <  ] " " "#|!z Y  = +D$77 7rc|jSN)r"r/s rr0zTreeSegmentWidget.labels {rc |jddSrN)r#rOs rr1zTreeSegmentWidget.subtreess~aaa  rc||j||||_||jdS)z2 Set the node label to ``label``. N)_remove_child_widgetr"r,rE)r/r0s r set_labelzTreeSegmentWidget.set_labelsO !!$+... u%%%  DK     rc|j|}||j|<||||||dS)zC Replace the child ``oldchild`` with ``newchild``. N)r#indexrRr,rE)r/oldchildnewchildrUs r replace_childzTreeSegmentWidget.replace_childse$$X.. (u !!(+++ x((( Hrc$|j|}|j|=||||j||jdSrN) r#rUrRrdeleter)poprEr")r/childrUs r remove_childzTreeSegmentWidget.remove_childsw$$U++ N5 ! !!%((( T[__../// DK     rc &|}|j|||||j|ddddd||jdS)Nrrr) rr#insertr,r)appendrrEr")r/rUr\rs r insert_childzTreeSegmentWidget.insert_childs eU+++ u%%% 6--aAqy-IIJJJ DK     rc.|jr|jgS|jSrN)r%r+r)rOs r_tagszTreeSegmentWidget._tagss : M? "; rc t|tr'|}n|}|jr|d|d|dzdz fS|d|dzdz |dfS)Nrr9@)rBrr0bboxr$)r/r\rhs r _subtree_topzTreeSegmentWidget._subtree_tops e. / / ;;==%%''DD::<!#4#9#9#;#; tT4~abb) & &G<<>>DtT!W%%DtT!W%%DtT!W%%DtT!W%%DD    KKMM  ueT4tUE     KKMM  ueT4tUE    # I IG!..00NUE;t~33G<<=D#'#4#4W#=#= Xx KKMM ueXx H H H H  I Ircd|jr||S||SrN)r$_maintain_order_horizontal_maintain_order_vertical)r/r\s rrnz!TreeSegmentWidget._maintain_order s5   822599 90077 7rc|\}}}}||jurY|jD]J}|\}}} } ||jz|kr!|d||jz|z K|jS|g} |j|} ||jz} t| dzt|jD]}|j|\}}} } | |krT|j|| |z d| | |z |jzz } | |j|||jz } t| dz ddD]}|j|\}}} } | | krT|j|| | z d| | |z |jzz} | |j||j\}}} } | ||jz kr-|jd||jz | z |j} | S)Nrr9) rhr"r#r'moverUr&rangermr`)r/r\lefttoprightbotr3x1y1x2y2movedrUxis rrz*TreeSegmentWidget._maintain_order_verticals["'**,,sE3 DK  > = =#*<<>> RR%**LLC$,$6$;<<<> !GEN((//E $A519c$.&9&9:: 4 4#'>!#4#9#9#;#; RRr66N1%**1r61555b4<//ALL!2333t|#A519b"-- 4 4#'>!#4#9#9#;#; RRr66N1%**1r61555b4<//ALL!2333 ${//11 RRC$,&&&   C$,$6$;<<< rc|\}}}}||jurX|jD]I}|\}}} } ||jz|kr |||jz|z J|jS|g} |j|} ||jz} t| dzt|jD]}|j|\}}} } | |krT|j|d| |z | | |z |jzz } | |j|||jz } t| dz ddD]}|j|\}}} } | | krT|j|d| | z | | |z |jzz} | |j||j\}}} } | ||jz kr-|j||jz | z d|j} | S)Nr9rr) rhr"r#r&rrUr'rrmr`)r/r\rrrrr3rrrrrrUyrs rr~z,TreeSegmentWidget._maintain_order_horizontal<sY"'**,,sE3 DK  > < <#*<<>> RR4<'",,LL!5!:;;;> !GEN((//Edl"A519c$.&9&9:: 4 4#'>!#4#9#9#;#; RRr66N1%**1a"f555b4<//ALL!2333dl"A519b"-- 4 4#'>!#4#9#9#;#; RRr66N1%**1a"f555b4<//ALL!2333 ${//11 RRD4<'''    !4r!91=== rc|\}}d}|jD]f}|}||dz |jz}||dz }|||||d|dz |jzz }gd}|jD] }|||dz }!|t|jz}|jD]}|d||z dS)Nrr9re)rkr#rhr&rr'rirm) r/rsrtrr3 subtree_bboxdxdycenters r_manage_horizontalz$TreeSegmentWidget._manage_horizontalfs**,, ~ B BG"<<>>La(4<7B\!_$B LLR a<?2T\A AAA~ 4 4G d''003 3FF#dn%%%~ , ,G LLEFN + + + + , ,rc|\}}d}|jD]f}|}||dz |jz}||dz }|||||d|dz |jzz }gd}|jD]5}|||dt|jz z }6|jD]}|||z ddS)Nrr9rgr)rkr#rhr'rr&rirm) r/rsrtrr3rrrrs r_manage_verticalz"TreeSegmentWidget._manage_vertical|s**,, ~ B BG"<<>>La(4<7B\!_$B LLR a<?2T\A AAA~ J JG d''003c$.6I6II IFF~ , ,G LL + + + + , ,rc"d|_|\}}t|jdkrdS|jr|n||jD]}||d|_dS)NTrF)r-rkrmr#r$rrr|)r/rsrtr3s r_managezTreeSegmentWidget._manages**,, t~  ! # # F   $  # # % % % %  ! ! # # #~ " "G LL ! ! ! !rc(d|jd|jdS)Nz [TreeSeg z: ])r"r#rOs r__repr__zTreeSegmentWidget.__repr__s;4;;;$.;;;;rN)__name__ __module__ __qualname____doc__r.rFrLr0r1rSrXr]rarcrirkr|rnrr~rrrrrrrrsRB777>*8*8*8X8880!!!!!!!!!!!! 888888'I'I'IR888 (((T(((T,,,,,,,*"<<<<.sM           r)rBr r0r) rtrrrrrrr0r1s ` `````` rrrs!T4 &!''))<<|<<               !IILIIIy33l333rc i}i}i}i}t|D]\} } | dddkr| || dd<!| dddkr| || dd<=| dddkr| || dd<Y| dddkr| || dd<utd| zt||||||||S) aS Convert a Tree into a ``TreeSegmentWidget``. :param make_node: A ``CanvasWidget`` constructor or a function that creates ``CanvasWidgets``. ``make_node`` is used to convert the Tree's nodes into ``CanvasWidgets``. If no constructor is specified, then ``TextWidget`` will be used. :param make_leaf: A ``CanvasWidget`` constructor or a function that creates ``CanvasWidgets``. ``make_leaf`` is used to convert the Tree's leafs into ``CanvasWidgets``. If no constructor is specified, then ``TextWidget`` will be used. :param attribs: Attributes for the canvas widgets that make up the returned ``TreeSegmentWidget``. Any attribute beginning with ``'tree_'`` will be passed to all ``TreeSegmentWidgets`` (with the ``'tree_'`` prefix removed. Any attribute beginning with ``'node_'`` will be passed to all nodes. Any attribute beginning with ``'leaf_'`` will be passed to all leaves. And any attribute beginning with ``'loc_'`` will be passed to all text locations (for Trees). Ntree_node_leaf_loc_zBad attribute: %s)listitemsrAr) rrrrr2rrrrkeyrHs rtree_to_treesegmentrs0LLLK7==??++ 8 8 U rr7g  $)LQRR ! ! !W  $)LQRR ! ! !W  $)LQRR ! ! !W  #(KABB 03677 7     rceZdZdZeefdZdZdZddZddZ ddZ dd Z dd Z dd Z d Zd ZdZdZdZdZdZdS) TreeWidgeta A canvas widget that displays a single Tree. ``TreeWidget`` manages a group of ``TreeSegmentWidgets`` that are used to display a Tree. Attributes: - ``node_attr``: Sets the attribute ``attr`` on all of the node widgets for this ``TreeWidget``. - ``node_attr``: Sets the attribute ``attr`` on all of the leaf widgets for this ``TreeWidget``. - ``loc_attr``: Sets the attribute ``attr`` on all of the location widgets for this ``TreeWidget`` (if it was built from a Tree). Note that a location widget is a ``TextWidget``. - ``xspace``: The amount of horizontal space to leave between subtrees when managing this widget. Default value is 10. - ``yspace``: The amount of space to place between the node and its children when managing this widget. Default value is 15. - ``line_color``: The color of the lines connecting each expanded node to its subtrees. - ``roof_color``: The color of the outline of the triangular roof for collapsed trees. - ``roof_fill``: The fill color for the triangular roof for collapsed trees. - ``width`` - ``orientation``: Determines whether the tree branches downwards or rightwards. Possible values are ``'horizontal'`` and ``'vertical'``. The default value is ``'vertical'`` (i.e., branch downwards). - ``shapeable``: whether the subtrees can be independently dragged by the user. THIS property simply sets the ``DRAGGABLE`` property on all of the ``TreeWidget``'s tree segments. - ``draggable``: whether the widget can be dragged by the user. c ||_||_||_i|_i|_ddi|_d|_d|_d|_d|_ d|_ d|_ d|_ d|_ d|_i|_i|_i|_g|_g|_|||d |||d |_||jt1j||fi|dS) Nr;z#008000z#008080r9z#c0c0c0Frr:r) _make_node _make_leaf_tree _nodeattribs _leafattribs _locattribs _line_color _line_width _roof_color _roof_fill _shapeabler&r' _orientationr(_keys_expanded_trees_collapsed_trees_nodes_leaves_make_collapsed_trees_make_expanded_tree_treesegr,rr.)r/rrrrr2s rr.zTreeWidget.__init__&s $# #Y/$$#  &  ! "   ""61b11100B??  t}---dF66g66666rc|j|SaF Return the ``TreeSegmentWidget`` for the specified subtree. :param path_to_tree: A list of indices i1, i2, ..., in, where the desired widget is the widget corresponding to ``tree.children()[i1].children()[i2]....children()[in]``. For the root, the path is ``()``. )rr/ path_to_trees r expanded_treezTreeWidget.expanded_treeIs#L11rc|j|Sr)rrs rcollapsed_treezTreeWidget.collapsed_treeTs$\22rr9ct|jD]}|||t|jD]}|||dSz5 Add a binding to all tree segments. N)rrvalues bind_clickrr/callbackbuttontsegs rbind_click_treeszTreeWidget.bind_click_trees_s-446677 . .D OOHf - - - -.557788 . .D OOHf - - - - . .rct|jD]}|||t|jD]}|||dSr)rrr bind_dragrrs rbind_drag_treeszTreeWidget.bind_drag_treeshs-446677 - -D NN8V , , , ,.557788 - -D NN8V , , , , - -rc|jD]}||||jD]}|||dSz. Add a binding to all leaves. N)rrr/rrleafs rbind_click_leaveszTreeWidget.bind_click_leavesqs^L . .D OOHf - - - -L . .D OOHf - - - - . .rc|jD]}||||jD]}|||dSr)rrrs rbind_drag_leaveszTreeWidget.bind_drag_leaveszs^L - -D NN8V , , , ,L - -D NN8V , , , , - -rc|jD]}||||jD]}|||dSz- Add a binding to all nodes. N)rrr/rrnodes rbind_click_nodeszTreeWidget.bind_click_nodess^K . .D OOHf - - - -K . .D OOHf - - - - . .rc|jD]}||||jD]}|||dSr)rrrs rbind_drag_nodeszTreeWidget.bind_drag_nodess^K - -D NN8V , , , ,K - -D NN8V , , , , - -rc N t|tsdSj}j ||fij}j| fd|D}xj |z c_ t||dj j j }|j|<|j|<|t#t%|D]%}||} | ||fz&dS)Nc.g|]}|fijSr)r)rrIrrr/s rrz4TreeWidget._make_collapsed_trees..s0PPP))FA;;):;;PPPrr9)r5r;rr<)rBr rrr0rrr`leavesrrrrrrrhiderrmr) r/rrrrrrtreesegrr\rs `` @rrz TreeWidget._make_collapsed_treessI!T""  FO O y@@d.?@@ 4   PPPPPPQXXZZPPP  #   ""   &-c"! 7 s1vv B BAaDE  & &vucQDj A A A A B Brc j}j}t|tr||fij}j||  fdtt D}t||j j }|j <j|<|S||fij} j| | S)NcRg|]#}||fz$Sr)r)rrrchildrenrr/s rrz2TreeWidget._make_expanded_tree..sE((!cQDjIIr)r;r<)rrrBr r0rrr`rrmrrrrrrr) r/rrrrrrr1rrrs `` ` @rrzTreeWidget._make_expanded_trees(O O a   9VQWWYYDD$2CDDD K  t $ $ $Hs8}}--H(hd.>dFVG)0D  %"%DJw N9VQ<<$*;<r7r?)rrrrrrrrrrrr&manager'rr(rrF)r/rGrHrrrs rrFzTreeWidget.__setitem__s 8w    ' '!&T!""X ' ' "1"X   ' '!&T!""X ' ' \ ! !$D T188::;; & & %W  & & \ ! !$D T188::;; & & %W T299;;<< & & %W  & & \ ! !$D T299;;<< & & %W  & & [ #DOT299;;<< % %$V  % % [ #DOT188::;; * *$)[!!T299;;<< * *$)[!!  * *$)[!! * * X   DLT188::;; ' '!&XT299;;<< ' '!&X KKMMMMM X   DLT188::;; ' '!&XT299;;<< ' '!&X KKMMMMM ] " " %D T188::;; , ,&+]##T299;;<< , ,&+]## KKMMMMM Y  !DMT188::;; ( ("'YT299;;<< ( ("'Y ( (  $T4 7 7 7 7 7rc"|dddkr#|j|dddS|dddkr#|j|dddS|dddkr#|j|dddS|dkr|jS|dkr|jS|dkr|jS|d kr|jS|d kr|jS|d kr|j S|d kr|j S|d kr|j Stj ||S)Nrrrrrrrrrrr=r>r7)rgetrrrrrrrr&r'rrrL)r/rGs rrLzTreeWidget.__getitem__ sM 8w  $((abb488 8 "1"X $((abb488 8 "1"X  #''QRR$77 7 \ ! !# # \ ! !# # \ ! !# # [ ? " [ ? " X  <  X  <  ] " "$ $+D$77 7rcgSrNrrOs rrczTreeWidget._tags#s rcJt|jt|jz}|D]R}|r<|||SdSrN)rrrrrshowrr)r/segsrs rrzTreeWidget._manage&sD(//1122T  ! ( ( * *6 6    D{{}}      rc|}|dr|j|j|}n|j|j|}||ur2||||||_n(||||| dd\}}| dd\}}| ||z ||z | | |dS)z) Collapse/expand a tree. r5Nrg)rrrparentrRr,rrXrr0rhrrrE)r/r old_treeseg new_treesegnewxnewyoldxoldys rtoggle_collapsedzTreeWidget.toggle_collapsed0so v  I.tz+/FGKK/ ;0GHK     4 ' '  % %k 2 2 2  " "; / / /'DMM    . .{K H H H "((**//11"1"5 t"((**//11"1"5 tdTk222  ##K00000rN)r9)rrrrr r.rrrrrrrrrrrFrLrcrrrrrrrs>&&R$.!7!7!7!7F 2 2 2 3 3 3....----....----....----BBB<.=8=8=8~888411111rrc2eZdZdZdZdZdZdZdZdS)TreeViewc ddlm}m}||_t |_|jd|jd|j|jd|jt|jx}|_ |jd|j j t|j|_ |j dd|j  d f}d|j  f}t!||t#||_g|_t)t#|D]~}t+||||d d d d d d| }||j|j|||dd||j dd|dS)Nr)ceilsqrtNLTKz z z helveticaboldz#008040z#004080z#004040whiter9) node_font leaf_color node_colorrrrr leaf_fontboth)expandr)mathrr_treesr_toptitlebinddestroyr_cframe print_to_filer_sizesetrrDrm_width_widgetsrrrrrr` add_widget_layoutpack _init_menubar) r/treesrrcfrhelvrwidgets rr.zTreeView.__init__Vs######## DD   }dl333 }dl333' 222T\ }dl&@AAADI&&  rdjnn...7djnn.../$$ttCJJ//0011  s5zz"" ( (A a$$$!$   F  # #F$; < < < M  ( ( ( MM&!Q ' ' ' '  000 rcdx}x}x}}|j}tt|jD]}|j|}|dd\}}||zdkr|}d}|||z ||z |ddz}t ||ddz}dS)Nrrgrre)r+rrmr,rhrrp) r/rrrrxr<r4rrs rr.zTreeView._layoutsAD s4=))** 4 4A]1%F!;;==!,LT45yA~~ KKD!d( + + + a 2%AtV[[]]1-233DD 4 4rct|j}t|d}|dd|jjd|dd|jd|d d| t|d}|d |jdd |j |d|jdd|j |d|jdd|j |d|jdd|j |d|jdd|j |dd| |j |dS)Nr)tearoffzPrint to PostscriptzCtrl-p)r0 underlinecommand acceleratorExitr9zCtrl-xFile)r0r8menuTinyr)r0variabler8rHr9SmallrMediumLargeHuge2Zoom)r=) rr# add_commandr'r(r& add_cascadeadd_radiobuttonr)resizeconfig)r/menubarfilemenuzoommenus rr0zTreeView._init_menubarsty//+++'L.    At|     &AHEEE+++  ZK !      ZK !      ZK !      ZK !      ZK !    &AHEEE g&&&&&rcd|j df}d|j f}|j}|j}|jD]a}||d<||d<||d<||d<|jdkrd|d <9|jd krd |d <\d |d <b|dS) Nrrrrr=r>rr9rrgre)r)rr,r.)r/err3r=r>r4s rrKzTreeView.resizesdjnn...7djnn.../!!!!m ) )F"&F; "&F; %F8 %F8 z~~"$$'(|$$!!B&&'(|$$'(|$$ rcX|jdS|jd|_dSrN)r#r&)r/rRs rr&zTreeView.destroys. 9  F  rcJtrdS|jj|i|dS)z Enter the Tkinter mainloop. This function must be called if this demo is created from a non-interactive program (e.g. from a secript); otherwise, the demo will close as soon as the script completes. N)r r#mainloop)r/argskwargss rrUzTreeView.mainloops5 99  F D+F+++++rN) rrrr.r.r0rKr&rUrrrrrUsp)))V 4 4 45'5'5'n$ , , , , ,rrc<t|dS)zd Open a new window containing a graphical diagram of the given trees. :rtype: None N)rrU)r1s r draw_treesrYs  e Frc Vddlfd}tddd}tjd}t ||dd d d d d d }||ddd}d}tjd}t ||||d}fd}fd} ||j||j| |d| d | d| | dt||} || | ddzdtjd} t|| d dd} d| d<|| d| ddzd} d}t||}t#||d d}||| ddz| ddztjd}t ||dddd d!d"#}|||| ddz| ddz| | ||jd|dS)$Nrc@dddz|d<dS)N#%06dri?Brrandint)cwrandoms rrzdemo..fills#v~~a8886 ri&irg)r<height closeenoughzU (S (NP the very big cat) (VP (Adv sorta) (V saw) (NP (Det the) (N dog))))r9)rir)ritalicrblackgreen4blue2)rrrrrrrrcJd}t|t|||dS)N)rir)fontgreenr)rr )rtextbigs rboxitzdemo..boxits+(FDs!C!C!C'RRRRrcBt|t||dS)Ncyanr)r r )rrks rovalitzdemo..ovalits!&*VT":":HHHHrz/(S (NP this tree) (VP (V is) (AdjP shapeable))))rc@dddz|d<dS)Nz#%04d00r'r;r])rr`s rr;zdemo..colors#!FNN1d$;$;;W rcdddz|d<d|d<dS)Nr\rrrrrr;)r^r0r\)rr`s rcolor2zdemo..color2!sL")FNN1d,C,C"C +2 (((rrezb (S (NP this tree) (AUX was) (VP (V built) (PP (P with) (NP (N tree_to_treesegment)))))) tree_color tree_xspace tree_widthrc<|ddkr|dddd|dddd|ddd|ddd|d<dS|dddd|dddd|ddd|ddd|d<dS)Nr7r8r9rr:re)rr1set_textr) treewidgets r orientswitchzdemo..orientswitch9s m $ 4 4  $ $Q * * 3 3 5 5a 8 A A* M M M  % %a + + 4 4 6 6q 9 B B: N N N  % %a ( ( 1 1 3 3A 6 ? ? K K K  % % ' ' 0 0 2 21 5 > >z J J J(2J} % % %  $ $Q * * 3 3 5 5a 8 A A, O O O  % %a + + 4 4 6 6q 9 B B< P P P  % %a ( ( 1 1 3 3A 6 ? ? M M M  % % ' ' 0 0 2 21 5 > >| L L L(4J} % % %raM Try clicking, right clicking, and dragging different elements of each of the trees. The top-left tree is a TreeWidget built from a Tree. The top-right is a TreeWidget built from a Tree, using non-default widget constructors for the nodes & leaves (BoxWidget and OvalWidget). The bottom-left tree is built from tree_to_treesegment.)rrz/(S (NP this tree) (VP (V is) (Adj horizontal)))brown2)rrcrbrown4r8)rrrrrr7)r`rr fromstringrrr-rrrrrr rhrr striprrrU)rr2rtcrmrptreetoktc2r;rtparentree3tc3r{rktwidgettextboxtree4tc4r`s @rdemorsMMM99999 3s : : :B  ;  A   ,.   BMM"b"SSSIIIoOPPG RYY[['5&A F F FC<<<<<33333+,,,-...q!!!a##FA...""61---  S ) )EMM%1*B/// O E  E  UxQ1   CC MM#r27799Q<",--- 5 5 5 #Ddjjll33G W7aHHHGMM'388::a=2-sxxzz!}r/ABBB OM N NE   ,    CJJLLLMM#sxxzz!}r)7<<>>!+rs%$$$$$$$$$E<E<E<E<E< E<E<E

$z1111rP1P1P1P1P1P1P1P1p Q,Q,Q,Q,Q,Q,Q,Q,h   lll^ zDFFFFFr