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% Copyright 2019 by Till Tantau
%
% This file may be distributed and/or modified
%
% 1. under the LaTeX Project Public License and/or
% 2. under the GNU Public License.
%
% See the file doc/generic/pgf/licenses/LICENSE for more details.
\ProvidesFileRCS{pgfmoduleshapes.code.tex}
\newbox\pgfnodeparttextbox
% Creates a node
%
% #1 = shape type
% #2 = anchor
% #3 = name for later reference
% #4 = path usage command
%
% Description:
%
% This command draws a shape that has previously been defined using
% \pgfdeclareshape. The shape is shifted such that the anchor is at
% the origin. In order to transform the whole shape, you should setup
% pgf's transformation matrix prior to calling this command.
%
% When this command is called, the shape-specific TeX boxes of the
% node must have been setup correctly.
%
% Example:
%
% \pgftransformshift{\pgfpoint{1cm}{1cm}}
% \pgfmultipartnode{rectangle}{center}{hellonode}{\pgfusepath{stroke}}
\def\pgfmultipartnode#1#2#3#4{%
\pgfutil@ifundefined{pgf@sh@s@#1}%
{\pgferror{Unknown shape ``#1''}}%
{%
{%
\ifpgflatenodepositioning%
\pgfsys@beginscope%
\fi%
\pgf@outer@adjust@hook%
\let\pgf@sh@savedmacros=\pgfutil@empty% MW
\let\pgf@sh@savedpoints=\pgfutil@empty%
\def\pgf@sm@shape@name{#1}% CJ % TT added prefix!
\csname pgf@sh@s@#1\endcsname%
\pgf@sh@savedpoints%
\pgf@sh@savedmacros% MW
\pgftransformshift{%
\pgf@sh@reanchor{#1}{#2}%
\pgf@x=-\pgf@x%
\pgf@y=-\pgf@y%
}%
\expandafter\pgfsavepgf@process\csname pgf@sh@sa@#3\endcsname{%
\pgf@sh@reanchor{#1}{#2}% FIXME : this is double work!
}%
% Save the saved points and the transformation matrix
\edef\pgf@node@name{#3}%
\ifpgflatenodepositioning%
\pgf@shapes@late@pos@begin%
\fi%
\ifx\pgf@node@name\pgfutil@empty%
\else%
\expandafter\xdef\csname pgf@sh@ns@\pgf@node@name\endcsname{#1}%
\edef\pgf@sh@@temp{\noexpand\gdef\expandafter\noexpand\csname pgf@sh@np@\pgf@node@name\endcsname}%
\expandafter\pgf@sh@@temp\expandafter{\pgf@sh@savedpoints}%
\edef\pgf@sh@@temp{\noexpand\gdef\expandafter\noexpand\csname pgf@sh@ma@\pgf@node@name\endcsname}% MW
\expandafter\pgf@sh@@temp\expandafter{\pgf@sh@savedmacros}% MW
\pgfgettransform\pgf@temp%
\expandafter\xdef\csname pgf@sh@nt@\pgf@node@name\endcsname{\pgf@temp}%
\expandafter\xdef\csname pgf@sh@pi@\pgf@node@name\endcsname{\pgfpictureid}%
\fi%
\pgfutil@ifundefined{pgf@sh@bbg@#1}{}
{{\pgfusetype{.behind background}\pgfidscope\pgfscope\csname pgf@sh@bbg@#1\endcsname\endpgfscope\endpgfidscope}}%
\pgfutil@ifundefined{pgf@sh@bg@#1}{%
\global\let\pgfpositionnodelaterpath\pgfutil@empty%
}%
{\pgfpushtype%
\pgfusetype{.background}\csname pgf@sh@bg@#1\endcsname%
\ifpgflatenodepositioning%
\pgfsyssoftpath@getcurrentpath\pgfpositionnodelaterpath%
\pgfprocessround{\pgfpositionnodelaterpath}{\pgfpositionnodelaterpath}%
\global\let\pgfpositionnodelaterpath\pgfpositionnodelaterpath%
\fi%
#4\pgfpoptype}%
\pgfutil@ifundefined{pgf@sh@fbg@#1}{}
{{\pgfusetype{.before background}\pgfidscope\pgfscope\csname pgf@sh@fbg@#1\endcsname\endpgfscope\endpgfidscope}}%
{%
\expandafter\pgfutil@for\expandafter\pgf@shape@com\expandafter:\expandafter=\csname pgf@sh@boxes@#1\endcsname\do{%
{%
\pgfusetype{.\pgf@shape@com}%
\pgftransformshift{\pgf@sh@reanchor{#1}{\pgf@shape@com}}%
\pgfapproximatenonlineartransformation%
\expandafter\pgfqboxsynced\expandafter{\csname pgfnodepart\pgf@shape@com box\endcsname}%
}%
}%
}%
\pgfutil@ifundefined{pgf@sh@bfg@#1}{}%
{{\pgfusetype{.behind foreground}\pgfidscope\pgfscope\csname pgf@sh@bfg@#1\endcsname\endpgfscope\endpgfidscope}}%
\pgfutil@ifundefined{pgf@sh@fg@#1}{}%
{\pgfpushtype\pgfusetype{.foreground}\csname pgf@sh@fg@#1\endcsname#4\pgfpoptype}%
\pgfutil@ifundefined{pgf@sh@ffg@#1}{}%
{{\pgfusetype{.before foreground}\pgfidscope\pgfscope\csname pgf@sh@ffg@#1\endcsname\endpgfscope\endpgfidscope}}%
\ifpgflatenodepositioning%
\pgf@shapes@late@pos@end%
\pgfsys@endscope%
\else%
\expandafter\pgf@nodecallback\expandafter{\pgf@node@name}%
\fi%
}%
}%
}%
\let\pgf@outer@adjust@hook\relax
\def\pgf@shapes@late@pos@begin{%
% Rename node
\edef\pgf@node@name{not yet positionedPGFINTERNAL\pgf@node@name}%
% Interrupt bounding box!
\pgfinterruptboundingbox%
% Put everything in our box:
\pgf@relevantforpicturesizetrue%
\setbox\pgfpositionnodelaterbox=\hbox%
\bgroup%
\pgfsys@beginscope%
}%
\def\pgf@shapes@late@pos@end{%
\pgfsys@endscope%
\egroup% Close box
\ifdim\pgf@picminx>\pgf@picmaxx\relax% happens for empty nodes
\def\pgfpositionnodelaterminx{0.0pt}%
\let\pgfpositionnodelaterminy\pgfpositionnodelaterminx%
\let\pgfpositionnodelatermaxx\pgfpositionnodelaterminx%
\let\pgfpositionnodelatermaxy\pgfpositionnodelaterminx%
\else%
\edef\pgfpositionnodelaterminx{\the\pgf@picminx}%
\edef\pgfpositionnodelaterminy{\the\pgf@picminy}%
\edef\pgfpositionnodelatermaxx{\the\pgf@picmaxx}%
\edef\pgfpositionnodelatermaxy{\the\pgf@picmaxy}%
\fi%
\let\pgfpositionnodelatername=\pgf@node@name%
\pgf@positionnodelater@macro%
\endpgfinterruptboundingbox%
}%
\def\pgf@shift@node#1#2{%
% This internal command shifts the recorded coordinates for node #1
% by the vector #2. It is used to
% correct the position of the node if the recorded coordinate
% happens to be wrong
{%
\pgfsettransform{\csname pgf@sh@nt@#1\endcsname}%
\pgf@process{#2}%
\advance\pgf@pt@x by\pgf@x%
\advance\pgf@pt@y by\pgf@y%
\pgfgettransform{\pgf@temp}%
\expandafter\xdef\csname pgf@sh@nt@#1\endcsname{\pgf@temp}%
}%
}%
% Creates a node
%
% #1 = shape type
% #2 = anchor
% #3 = normal TeX text
% #4 = name for later reference
% #5 = path usage command
%
% Description:
%
% This command draws a shape that has previously been defined using
% \pgfdeclareshape. The shape is shifted such that the anchor is at
% the origin. In order to transform the whole shape, you should setup
% pgf's transformation matrix prior to calling this command.
%
% Example:
%
% \pgftransformshift{\pgfpoint{1cm}{1cm}}
% \pgfnode{rectangle}{center}{Hello}{hellonode}{\pgfusepath{stroke}}
\def\pgfnode#1#2#3#4#5{%
{%
\setbox\pgfnodeparttextbox=\hbox%
{%
\pgfinterruptpicture%
{#3}%
\endpgfinterruptpicture%
}%
\pgfmultipartnode{#1}{#2}{#4}{#5}%
}
}%
% Create a node that is positioned later
%
% #1 = macro to be called after the next node has been created
%
% Description:
%
% You can use this command to create a node that is "positioned
% later". The idea is the following: Normally, when a node is created
% using a command like \pgfnode, the node is immediately inserted into
% the current picture. In particular, you have no chance to change the
% position of a created node after it has been create.
%
% Using \pgfpositionnodelater, you can change the default
% behaviour. This command is not a replacement for \pgfnode, but is
% called before such a command and will cause the following to happen:
% The node is created, but not inserted into the picture. Instead, it
% is stored in the box \pgfpositionnodelaterbox. Furthermore, the node
% is not relevant for the picture's bounding box, but a bounding box
% for the node is computed and stored in the macros
% \pgfpositionnodelaterboundboxminx to
% \pgfpositionnodelaterboundboxmaxy. Finally, the
% macro #1 is called with the following macros setup:
%
% \pgfpositionnodelaterbox
% A box register (box 0 by default) that stores the node's paths and
% texts. You should move the contents of this box to a box of your
% choice.
%
% \pgfpositionnodelatername
% The name of the just-created-node. This name will be the
% originally "desired" name of the box plus the prefix "not yet
% positioned boxPGFINTERNAL".
%
% \pgfpositionnodelaterminx
% \pgfpositionnodelatermaxx
% \pgfpositionnodelaterminy
% \pgfpositionnodelatermaxy
% These four macros store the bounding box as dimensions that are
% guarenteed to end with "pt".
%
% By setting #1 to \relax (which is the default), you can switch off
% the whole mechanism
%
% Once a late node has been created, you can add arbitrary code in the
% same picture. Then, at some later point, you call
% \pgfpositionnodenow to finally position the node at a given position.
%
% When \pgfpositionnodenow is called, the macros mentioned above
% should have the exact same values they had when #1 is called.
\def\pgfpositionnodelater#1{%
\let\pgf@positionnodelater@macro=#1%
\ifx\pgf@positionnodelater@macro\relax%
\pgflatenodepositioningfalse%
\else%
\pgflatenodepositioningtrue%
\fi%
}%
\newif\ifpgflatenodepositioning
\pgfpositionnodelater{\relax}%
\def\pgfpositionnodelaterbox{0}%
% Position a node that has been scheduled for later insertion
%
% #1 = position in the picture, where the original anchor should go,
% now
%
% Description:
%
% This command works in concert with \pgfpositionnodelater, see the
% description there. When \pgfpositionnodenow is called, the macros
% \pgfpositionnodelaterbox and so on should be set to the values they
% had when the macro given to \pgfpositionnodelater was called. Then,
% the box described by these macros will be inserted into the picture
% at the position given #1. More precisely, the original node will
% have been positioned such that the anchor given upon invocation is
% at (0,0) and the node is now shifted by #1 before being inserted
% into the actual picture.
\def\pgfpositionnodenow#1{%
\pgfinterruptpath%
{%
\pgfpointtransformed{#1}%
\edef\pgf@temp@shift{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}
\pgftransformreset%
\pgftransformshift{\pgf@temp@shift}%
\pgfsys@pictureboxsynced\pgfpositionnodelaterbox%
\pgf@shift@node{\pgfpositionnodelatername}{\pgf@temp@shift}%
% Bounding box update...
\pgfpointtransformed{\pgfqpoint{\pgfpositionnodelaterminx}{\pgfpositionnodelaterminy}}%
\pgf@protocolsizes{\pgf@x}{\pgf@y}
\pgfpointtransformed{\pgfqpoint{\pgfpositionnodelatermaxx}{\pgfpositionnodelatermaxy}}%
\pgf@protocolsizes{\pgf@x}{\pgf@y}
% Naming and callbacks
\expandafter\pgfpositionnodenow@rename\pgfpositionnodelatername\relax%
}%
% Late setup%
{%
\csname pgf@lns@\pgfpositionnodelatername\endcsname%
\expandafter\global\expandafter\let\csname pgf@lns@\pgfpositionnodelatername\endcsname\relax%
}%
\endpgfinterruptpath%
}%
\def\pgfpositionnodenow@rename not yet positionedPGFINTERNAL#1\relax{%
\pgfnoderename{#1}{not yet positionedPGFINTERNAL#1}
}%
% "Fake" a node
%
% #1 = node name
%
% Description:
%
% This command will setup things so that it "looks like" a node named
% #1 has been created, but, in reality, no node is created. The idea
% is that a node created in this way can be referenced by systems
% using the late positioning, which will only create the node later
% on.
%
\def\pgffakenode#1{%
\edef\pgf@temp{\ifpgflatenodepositioning not yet positionedPGFINTERNAL\fi#1}%
\expandafter\gdef\csname pgf@sh@ns@\pgf@temp\endcsname{coordinate}%
\expandafter\gdef\csname pgf@sh@np@\pgf@temp\endcsname{\def\centerpoint{\pgfpointorigin}}%
\expandafter\gdef\csname pgf@sh@nt@\pgf@temp\endcsname{{1}{0}{0}{1}{0pt}{0pt}}%
\expandafter\global\expandafter\let\csname pgf@sh@ma@\pgf@temp\endcsname\pgfutil@empty%
\expandafter\xdef\csname pgf@sh@pi@\pgf@temp\endcsname{\pgfpictureid}%
}%
% Specify code that should be executed after a node has been created
%
% #1 = node name
% #2 = later code
%
% Description:
%
% This macro allows you to provide some code #2 that will be executed
% right after a node has been positioned using \pgfpositionnodenow. If
% the node has already been positioned (if the late positioning is not
% switched on), nothing happens.
\def\pgfnodepostsetupcode#1#2{%
\ifpgflatenodepositioning%
\expandafter\ifx\csname pgf@lns@not yet positionedPGFINTERNAL#1\endcsname\relax%
\expandafter\gdef\csname pgf@lns@not yet positionedPGFINTERNAL#1\endcsname{#2}%
\else%
\expandafter\pgfutil@g@addto@macro\csname pgf@lns@not yet positionedPGFINTERNAL#1\endcsname{#2}%
\fi%
\fi%
}%
% Alias a node
%
% #1 = new node name
% #2 = existing node name
%
% Description:
%
% This command allows you to subsequently access the node #2 using the
% name #1.
%
% Example:
%
% \pgfnode{rectangle}{center}{Hallo}{hellonode}{}
% \pgfnodealias{mynode}{hellonode}
\def\pgfnodealias#1#2{%
\pgf@node@gnamelet{pgf@sh@ns@#1}{pgf@sh@ns@#2}%
\pgf@node@gnamelet{pgf@sh@np@#1}{pgf@sh@np@#2}%
\pgf@node@gnamelet{pgf@sh@nt@#1}{pgf@sh@nt@#2}%
\pgf@node@gnamelet{pgf@sh@pi@#1}{pgf@sh@pi@#2}%
\pgf@node@gnamelet{pgf@sh@ma@#1}{pgf@sh@ma@#2}%
\pgf@nodecallback{#1}%
}%
\def\pgf@node@gnamelet#1#2{%
\expandafter\let\expandafter\pgf@temp\csname #2\endcsname%
\expandafter\global\expandafter\let\csname #1\endcsname=\pgf@temp%
}%
% Rename a node
%
% #1 = new name
% #2 = old name
%
% Description:
%
% Renames a node. This is like an alias, only the memory used for the
% old name is freed.
\def\pgfnoderename#1#2{%
\pgfnodealias{#1}{#2}%
\expandafter\global\expandafter\let\csname pgf@sh@ns@#2\endcsname\relax
\expandafter\global\expandafter\let\csname pgf@sh@np@#2\endcsname\relax
\expandafter\global\expandafter\let\csname pgf@sh@nt@#2\endcsname\relax
\expandafter\global\expandafter\let\csname pgf@sh@pi@#2\endcsname\relax
\expandafter\global\expandafter\let\csname pgf@sh@ma@#2\endcsname\relax
}%
% Quickly create a coordinate node
%
% #1 = name
% #2 = coordinate
%
% Description:
%
% Creates a node of shape coordinate. The following have the same
% effect, only the second is much faster:
%
% { \pgftransformshift{\pgfpoint{1cm}{2cm} \pgfnode{coordinate}{center}{}{foo}{} }
% \pgfcoordinate{foo}{\pgfpoint{1cm}{2cm}}
\def\pgfcoordinate#1#2{%
\edef\pgf@temp{#1}%
\ifx\pgf@temp\pgfutil@empty% do nothing
\else%
\ifpgflatenodepositioning%
{\pgftransformshift{#2}\pgfnode{coordinate}{center}{}{#1}{}}%
\else%
\pgf@process{\pgfpointtransformed{#2}}%
\expandafter\gdef\csname pgf@sh@ns@#1\endcsname{coordinate}%
\expandafter\xdef\csname pgf@sh@np@#1\endcsname{%
\noexpand\def\noexpand\centerpoint{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
}
\expandafter\gdef\csname pgf@sh@nt@#1\endcsname{{1}{0}{0}{1}{0pt}{0pt}}%
\expandafter\global\expandafter\let\csname pgf@sh@ma@#1\endcsname\pgfutil@empty%
\expandafter\xdef\csname pgf@sh@pi@#1\endcsname{\pgfpictureid}%
\fi%
\fi%
}%
\def\pgf@sh@redeferredanchor#1#2{% CJ
\expandafter\gdef\csname pgf@anchor@\pgf@sm@shape@name @#1\endcsname{#2}}% CJ
\def\pgf@sh@resavedanchor#1#2{%
\pgf@process{#2}%
\edef\pgf@sh@marshal{%
\noexpand\pgfutil@g@addto@macro\noexpand\pgf@sh@savedpoints{%
\noexpand\def\noexpand#1{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
}}%
\pgf@sh@marshal%
}%
\def\pgf@sh@resaveddimen#1#2{%
{#2\global\pgf@x=\pgf@x}%
\edef\pgf@sh@marshal{%
\noexpand\pgfutil@g@addto@macro\noexpand\pgf@sh@savedpoints{%
\noexpand\def\noexpand#1{\the\pgf@x}%
}}%
\pgf@sh@marshal%
}%
\def\pgf@sh@resavedmacro#1#2{%
\let#1\pgfutil@empty%
\def\addtosavedmacro##1{%
\expandafter\def\expandafter\pgf@sh@addtomacro@temp\expandafter{#1\noexpand\def\noexpand##1{##1}}%
{\expandafter\pgfutil@toks@\expandafter{\pgf@sh@addtomacro@temp}\expandafter}%
\expandafter\def\expandafter#1\expandafter{\the\pgfutil@toks@}%
}%
#2\relax%
\edef\pgf@sh@marshal{%
\noexpand\pgfutil@g@addto@macro\noexpand\pgf@sh@savedmacros{%
\noexpand\def\noexpand#1{#1}%
}}%
\pgf@sh@marshal%
}%
% Invoke an anchor
\def\pgf@sh@reanchor#1#2{%
\pgfutil@ifundefined{pgf@anchor@#1@#2}%
{%
\pgfutil@ifundefined{pgf@anchor@generic@#2}{%
\pgfmathsetcounter{pgf@counta}{#2}%
\csname pgf@anchor@#1@border\endcsname{\pgfqpointpolar{\the\c@pgf@counta}{1pt}}%
}{%
\csname pgf@anchor@generic@#2\endcsname{#1}%
}%
}%
{\csname pgf@anchor@#1@#2\endcsname}%
}%
% Defines a generic anchor, i.e. one which gets the associated shape
% as first argument.
%
% #1: the anchor name.
% #2: the code of the anchor. It may depend upon '##1', the shape's
% name.
%
% The anchor will be defined locally in the current TeX scope.
%
% If the anchor will be referenced later by \pgfpointanchor, the macro \pgfreferencednodename
% can be used to query the referenced node's name.
% This macro is not defined during node creation.
\def\pgfdeclaregenericanchor#1#2{%
\expandafter\def\csname pgf@anchor@generic@#1\endcsname##1{#2}%
}%
% Retrieves an anchor of a shape
%
% #1 = name
% #2 = anchor or a number (corresponding to a degree)
%
% Description:
%
% This command yields a point at the anchor of the given named shape.
%
% Example:
%
% \pgfshape{rectangle}{center}{Hello}{hellonode}{\pgfusepath[stroke]}
% \pgfpathmoveto{\pgfpointanchor{hellonode}{center}}
\def\pgfpointanchor#1#2{%
% Ok, check whether #1 is known!
\pgfutil@ifundefined{pgf@sh@ns@#1}
{\pgfutil@ifundefined{pgf@sh@ns@not yet positionedPGFINTERNAL#1}{%
\pgferror{No shape named `#1' is known}}{
% else, fail silently
}%
\pgfpointorigin}%
{%
\pgf@process{%
\edef\pgfreferencednodename{#1}% for use inside of anchors.
% MW install special macros
\csname pgf@sh@ma@#1\endcsname% MW
% install special coordinates
\csname pgf@sh@np@#1\endcsname
\pgf@sh@reanchor{\csname pgf@sh@ns@#1\endcsname}{#2}%
{%
\pgfsettransform{\csname pgf@sh@nt@#1\endcsname}%
\pgf@pos@transform@glob%
}%
% Add inter picture transformation
\pgf@shape@interpictureshift{#1}%
% Undo current transformation
\pgftransforminvert%
\pgf@pos@transform@glob%
}%
}%
}%
\def\pgf@shape@interpictureshift#1{%
\expandafter\ifx\csname pgf@sh@pi@#1\endcsname\pgfpictureid%
\else%
\pgfsys@getposition{\csname pgf@sh@pi@#1\endcsname}\pgf@shape@original@pos%
\pgfsys@getposition{\pgfpictureid}\pgf@shape@current@pos%
\pgf@xa=\pgf@x%
\pgf@ya=\pgf@y%
\pgf@process{\pgfpointorigin\pgf@shape@current@pos}%
\advance\pgf@xa by-\pgf@x%
\advance\pgf@ya by-\pgf@y%
\pgf@process{\pgfpointorigin\pgf@shape@original@pos}%
\advance\pgf@xa by\pgf@x%
\advance\pgf@ya by\pgf@y%
\pgf@x=\pgf@xa%
\pgf@y=\pgf@ya%
\fi%
}%
% Retrieves a border point of a shape
%
% #1 = name
% #2 = another point
%
% Description:
%
% This command yields a point on the border of the shape that is on a
% straight line from the center to the point #2.
%
% Example:
%
% \pgfshape{rectangle}{center}{Hello}{hellonode}{\pgfusepath[stroke]}
% \pgfpathmoveto{\pgfpointshapeborder{hellonode}{\pgfpoint{2cm}{1cm}}
% \pgfpathlineto{\pgfpoint{2cm}{1cm}}
% \pgfusepath{stroke}
\def\pgfpointshapeborder#1#2{%
% Ok, check whether #1 is known!
\pgfutil@ifundefined{pgf@sh@ns@#1}
{\pgferror{No shape named `#1' is known}%
\pgfpointorigin}%
{%
\pgf@process{%
\edef\pgfreferencednodename{#1}% for use inside of anchors.
% MW install special macros
\csname pgf@sh@ma@#1\endcsname% MW
% install special coordinates
\csname pgf@sh@np@#1\endcsname%
{%
\pgf@process{\pgfpointtransformed{#2}}%
\pgfsettransform{\csname pgf@sh@nt@#1\endcsname}%
\pgftransforminvert%
\pgf@pos@transform@glob%
\pgf@xa=\pgf@x%
\pgf@ya=\pgf@y%
\pgf@process{\csname pgf@anchor@\csname pgf@sh@ns@#1\endcsname @center\endcsname}%
\pgf@process{\pgf@shape@interpictureshift{#1}}%%
\advance\pgf@xa by-\pgf@x%
\advance\pgf@ya by-\pgf@y%
\csname pgf@anchor@\csname pgf@sh@ns@#1\endcsname @border\endcsname{\pgfqpoint{\pgf@xa}{\pgf@ya}}%
\pgfsettransform{\csname pgf@sh@nt@#1\endcsname}%
\pgf@pos@transform@glob%
\global\pgf@x=\pgf@x%
\global\pgf@y=\pgf@y%
}%
% Add inter picture transformation
\pgf@shape@interpictureshift{#1}%
% Undo current transformation
\pgftransforminvert%
\pgf@pos@transform@glob%
}%
}%
}%
% Retrieve the list of node parts of a shape
%
% #1 = a macro
% #2 = a shape name
%
% Description:
%
% Stores the list of node parts of a shape #2 in the macro #1.
%
% Example:
%
% \pgfgetnodeparts\mylist{circle split}
%
% This will set \mylist\ to "text,lower"
\def\pgfgetnodeparts#1#2{%
\expandafter\let\expandafter#1\csname pgf@sh@boxes@#2\endcsname%
}%
% Declares a shape type
%
% #1 = shape type
% #2 = shape specification
%
% Description:
%
% This command declares a new shape type. The shape specification
% should contain the following commands:
%
% - \savedanchor
% This command takes two arguments: a name and some code. The point
% specified by the code (the \pgf@x and \pgf@y values resulting from
% executing the code, to be precise), will be stored under the given
% name. Whenever, later on, an anchor is invoked these stored points
% will be available. The \saveddimen works like \savedanchor, only a
% single dimension is stored (taken from \pgf@x).
% When a savedanchor is calculated, the height/width/depth of the
% boxes mentioned in \nodeparts can be used.
%
% - \anchor
% Specifies an anchor. This command takes two arguments: an anchor
% name and some code for computing the anchor. When the anchor
% computation starts, all shape points and shape dimension will be
% setup.
%
% - \anchorborder
% This command should compute a point on the border of the
% shape. When the code is called, \pgf@x and \pgf@y will have been
% preinitialised with a direction.
%
% - \behindbackgroundpath
% Some things to be draw behind everything.
%
% - \backgroundpath
% A path that is drawn behind the main box. How this path is used
% depends on how \pgfshape is called.
%
% - \beforebackgroundpath
% Some things to be draw before the background path, but behind the
% main box.
%
% - \behindforegroundpath
% Some things to be draw on top of the main box.
%
% - \foregroundpath
% A path that is drawn on top of all of the above. How this path is
% used depends on how \pgfshape is called.
%
% - \beforeforegroundpath
% Some things to be draw before everything.
%
% - \nodeparts
% List of node parts that make up the shape. For each entry XYZ in
% the list there must be a box named \pgfnodepartXYZbox (possibly
% ``redirected'' to some different box using \let). Each such box
% will be placed at the anchor XYZ.
% By default, \nodeparts is just {text}. Thus, there will be one
% node part box named \pgfnodeparttextbox and this node will be
% placed at the anchor text.
%
%
% Example:
%
% See the definition of rectangle, below.
\long\def\pgfdeclareshape#1#2{%
{%
\def\pgf@sm@shape@name{#1}%
\let\savedanchor=\pgf@sh@savedanchor
\let\saveddimen=\pgf@sh@saveddimen
\let\savedmacro=\pgf@sh@savedmacro% MW
\let\deferredanchor=\pgf@sh@deferredanchor% CJ
\let\anchor=\pgf@sh@anchor
\let\anchorborder=\pgf@sh@anchorborder
\let\behindbackgroundpath=\pgf@sh@behindbgpath
\let\backgroundpath=\pgf@sh@bgpath
\let\beforebackgroundpath=\pgf@sh@beforebgpath
\let\behindforegroundpath=\pgf@sh@behindfgpath
\let\foregroundpath=\pgf@sh@fgpath
\let\beforeforegroundpath=\pgf@sh@beforefgpath
\let\nodeparts=\pgf@sh@boxes
\let\inheritsavedanchors=\pgf@sh@inheritsavedanchors
\let\inheritanchor=\pgf@sh@inheritanchor
\let\inheritanchorborder=\pgf@sh@inheritanchorborder
\let\inheritbehindbackgroundpath=\pgf@sh@inheritbehindbgpath
\let\inheritbackgroundpath=\pgf@sh@inheritbgpath
\let\inheritbeforebackgroundpath=\pgf@sh@inheritbeforebgpath
\let\inheritbehindforegroundpath=\pgf@sh@inheritbehindfgpath
\let\inheritforegroundpath=\pgf@sh@inheritfgpath
\let\inheritbeforeforegroundpath=\pgf@sh@inheritbeforefgpath
\let\inheritnodeparts=\pgf@sh@inheritboxes
\anchorborder{\csname pgf@anchor@#1@center\endcsname}%
\anchor{text}{\pgfpointorigin}%
\nodeparts{text}%
\expandafter\global\expandafter\let\csname pgf@sh@s@\pgf@sm@shape@name\endcsname=\pgfutil@empty%
#2%
}%
}%
\def\pgf@sh@savedanchor#1#2{%
\expandafter\pgfutil@g@addto@macro\csname pgf@sh@s@\pgf@sm@shape@name\endcsname{\pgf@sh@resavedanchor{#1}{#2}}}%
\def\pgf@sh@saveddimen#1#2{%
\expandafter\pgfutil@g@addto@macro\csname pgf@sh@s@\pgf@sm@shape@name\endcsname{\pgf@sh@resaveddimen{#1}{#2}}}%
\def\pgf@sh@savedmacro#1#2{% MW
\expandafter\pgfutil@g@addto@macro\csname pgf@sh@s@\pgf@sm@shape@name\endcsname{\pgf@sh@resavedmacro{#1}{#2}}}% MW
\def\pgf@sh@anchor#1#2{\expandafter\gdef\csname pgf@anchor@\pgf@sm@shape@name @#1\endcsname{#2}}%
\def\pgf@sh@deferredanchor#1#2{% CJ
\expandafter\pgfutil@g@addto@macro
\csname pgf@sh@s@\pgf@sm@shape@name\endcsname{\pgf@sh@redeferredanchor{#1}{#2}}}% CJ
\def\pgf@sh@anchorborder#1{\expandafter\gdef\csname pgf@anchor@\pgf@sm@shape@name @border\endcsname##1{\pgf@process{##1}#1}}%
\long\def\pgf@sh@behindbgpath#1{\expandafter\gdef\csname pgf@sh@bbg@\pgf@sm@shape@name\endcsname{#1}}%
\long\def\pgf@sh@bgpath#1{\expandafter\gdef\csname pgf@sh@bg@\pgf@sm@shape@name\endcsname{#1}}%
\long\def\pgf@sh@beforebgpath#1{\expandafter\gdef\csname pgf@sh@fbg@\pgf@sm@shape@name\endcsname{#1}}%
\long\def\pgf@sh@behindfgpath#1{\expandafter\gdef\csname pgf@sh@bfg@\pgf@sm@shape@name\endcsname{#1}}%
\long\def\pgf@sh@fgpath#1{\expandafter\gdef\csname pgf@sh@fg@\pgf@sm@shape@name\endcsname{#1}}%
\long\def\pgf@sh@beforefgpath#1{\expandafter\gdef\csname pgf@sh@ffg@\pgf@sm@shape@name\endcsname{#1}}%
\def\pgf@sh@boxes#1{\expandafter\gdef\csname pgf@sh@boxes@\pgf@sm@shape@name\endcsname{#1}}%
\def\pgf@sh@inheritsavedanchors[from=#1]{%
\expandafter\pgfutil@g@addto@macro\csname pgf@sh@s@\pgf@sm@shape@name\endcsname{\csname pgf@sh@s@#1\endcsname}}%
\def\pgf@sh@inheritanchor[from=#1]#2{%
\edef\pgf@marshal{\global\let\expandafter\noexpand\csname
pgf@anchor@\pgf@sm@shape@name @#2\endcsname=\expandafter\noexpand\csname
pgf@anchor@#1@#2\endcsname}%
\pgf@marshal%
}%
\def\pgf@sh@inheritanchorborder[from=#1]{%
\edef\pgf@marshal{\global\let\expandafter\noexpand\csname
pgf@anchor@\pgf@sm@shape@name @border\endcsname=\expandafter\noexpand\csname
pgf@anchor@#1@border\endcsname}%
\pgf@marshal%
}%
\def\pgf@sh@inheritor#1#2{%
\edef\pgf@marshal{\global\let\expandafter\noexpand\csname
pgf@sh@#1@\pgf@sm@shape@name\endcsname=\expandafter\noexpand\csname
pgf@sh@#1@#2\endcsname}%
\pgf@marshal%
}%
\def\pgf@sh@inheritbehindbgpath[from=#1]{\pgf@sh@inheritor{bbg}{#1}}%
\def\pgf@sh@inheritbgpath[from=#1]{\pgf@sh@inheritor{bg}{#1}}%
\def\pgf@sh@inheritbeforebgpath[from=#1]{\pgf@sh@inheritor{fbg}{#1}}%
\def\pgf@sh@inheritbehindfgpath[from=#1]{\pgf@sh@inheritor{bfg}{#1}}%
\def\pgf@sh@inheritfgpath[from=#1]{\pgf@sh@inheritor{fg}{#1}}%
\def\pgf@sh@inheritbeforefgpath[from=#1]{\pgf@sh@inheritor{ffg}{#1}}%
\def\pgf@sh@inheritboxes[from=#1]{\pgf@sh@inheritor{boxes}{#1}}%
%
% Coordinate. This shape is special: It is only used to reference a
% point for later usage. Nothing is drawn, all anchors are identical
% to the center.
%
\pgfdeclareshape{coordinate}
{%
\savedanchor\centerpoint{%
% x
\pgf@x=.5\wd\pgfnodeparttextbox%
% y
\pgf@y=.5\ht\pgfnodeparttextbox%
\advance\pgf@y by -.5\dp\pgfnodeparttextbox%
}%
\anchor{center}{\centerpoint}%
\anchor{north}{\centerpoint}%
\anchor{north west}{\centerpoint}%
\anchor{north east}{\centerpoint}%
\anchor{west}{\centerpoint}%
\anchor{east}{\centerpoint}%
\anchor{mid}{\centerpoint}%
\anchor{mid west}{\centerpoint}%
\anchor{mid east}{\centerpoint}%
\anchor{base}{\centerpoint}%
\anchor{base west}{\centerpoint}%
\anchor{base east}{\centerpoint}%
\anchor{south}{\centerpoint}%
\anchor{south west}{\centerpoint}%
\anchor{south east}{\centerpoint}%
\anchorborder{\centerpoint}%
\nodeparts{}% no text
}%
% Value keys for shapes:
%
% /pgf/inner xsep : recommended inner x separation
% /pgf/inner ysep : recommended inner y separation
% /pgf/outer xsep : recommended outer x separation
% /pgf/outer ysep : recommended outer y separation
% /pgf/minimum width : recommended minimum width
% /pgf/minimum height : recommended minimum height
\pgfset{
inner xsep/.initial =.3333em,
inner ysep/.initial =.3333em,
inner sep/.style ={/pgf/inner xsep=#1,/pgf/inner ysep=#1},
outer xsep/.initial =.5\pgflinewidth,
outer ysep/.initial =.5\pgflinewidth,
outer sep/.code =\pgf@handle@outer@sep{#1},
minimum width/.initial =1pt,
minimum height/.initial =1pt,
minimum size/.style ={/pgf/minimum width=#1,/pgf/minimum height=#1},
}%
\def\pgf@handle@outer@sep#1{%
\def\pgf@temp{#1}%
\ifx\pgf@temp\pgf@auto@text%
\def\pgf@outer@adjust@hook{%
\pgftransformationadjustments%
\pgfkeyssetvalue{/pgf/outer xsep}{.5\pgflinewidth*\pgfhorizontaltransformationadjustment}%
\pgfkeyssetvalue{/pgf/outer ysep}{.5\pgflinewidth*\pgfverticaltransformationadjustment}%
\pgf@outer@auto@adjust@hook%
}%
\else%
\pgfkeyssetvalue{/pgf/outer xsep}{#1}%
\pgfkeyssetvalue{/pgf/outer ysep}{#1}%
\fi%
}%
\def\pgf@auto@text{auto}%
\let\pgf@outer@auto@adjust@hook\relax
% Keys for rotating the shape border.
% (may not be supported by all shapes)
%
% /pgf/shape border uses incircle : Calculate the shape border using the incircle
% around the node contents (+inner sep).
%
% /pgf/shape border rotate : Angle of independent border rotation.
\newif\ifpgfshapeborderusesincircle
\pgfkeys{/pgf/shape border uses incircle/.is if=pgfshapeborderusesincircle}%
\pgfkeys{/pgf/shape border rotate/.initial=0}%
%
% Rectangle
%
\pgfdeclareshape{rectangle}
{%
\savedanchor\northeast{%
% Calculate x
%
% First, is width < minimum width?
\pgf@x=\the\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@xc{\pgfkeysvalueof{/pgf/inner xsep}}%
\advance\pgf@x by 2\pgf@xc%
\pgfmathsetlength\pgf@xb{\pgfkeysvalueof{/pgf/minimum width}}%
\ifdim\pgf@x<\pgf@xb%
% yes, too small. Enlarge...
\pgf@x=\pgf@xb%
\fi%
% Now, calculate right border: .5\wd\pgfnodeparttextbox + .5 \pgf@x + outer sep
\pgf@x=.5\pgf@x%
\advance\pgf@x by.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@xa{\pgfkeysvalueof{/pgf/outer xsep}}%
\advance\pgf@x by\pgf@xa%
% Calculate y
%
% First, is height+depth < minimum height?
\pgf@y=\ht\pgfnodeparttextbox%
\advance\pgf@y by\dp\pgfnodeparttextbox%
\pgfmathsetlength\pgf@yc{\pgfkeysvalueof{/pgf/inner ysep}}%
\advance\pgf@y by 2\pgf@yc%
\pgfmathsetlength\pgf@yb{\pgfkeysvalueof{/pgf/minimum height}}%
\ifdim\pgf@y<\pgf@yb%
% yes, too small. Enlarge...
\pgf@y=\pgf@yb%
\fi%
% Now, calculate upper border: .5\ht-.5\dp + .5 \pgf@y + outer sep
\pgf@y=.5\pgf@y%
\advance\pgf@y by-.5\dp\pgfnodeparttextbox%
\advance\pgf@y by.5\ht\pgfnodeparttextbox%
\pgfmathsetlength\pgf@ya{\pgfkeysvalueof{/pgf/outer ysep}}%
\advance\pgf@y by\pgf@ya%
}%
\savedanchor\southwest{%
% Calculate x
%
% First, is width < minimum width?
\pgf@x=\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@xc{\pgfkeysvalueof{/pgf/inner xsep}}%
\advance\pgf@x by 2\pgf@xc%
\pgfmathsetlength\pgf@xb{\pgfkeysvalueof{/pgf/minimum width}}%
\ifdim\pgf@x<\pgf@xb%
% yes, too small. Enlarge...
\pgf@x=\pgf@xb%
\fi%
% Now, calculate left border: .5\wd\pgfnodeparttextbox - .5 \pgf@x - outer sep
\pgf@x=-.5\pgf@x%
\advance\pgf@x by.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@xa{\pgfkeysvalueof{/pgf/outer xsep}}%
\advance\pgf@x by-\pgf@xa%
% Calculate y
%
% First, is height+depth < minimum height?
\pgf@y=\ht\pgfnodeparttextbox%
\advance\pgf@y by\dp\pgfnodeparttextbox%
\pgfmathsetlength\pgf@yc{\pgfkeysvalueof{/pgf/inner ysep}}%
\advance\pgf@y by 2\pgf@yc%
\pgfmathsetlength\pgf@yb{\pgfkeysvalueof{/pgf/minimum height}}%
\ifdim\pgf@y<\pgf@yb%
% yes, too small. Enlarge...
\pgf@y=\pgf@yb%
\fi%
% Now, calculate upper border: .5\ht-.5\dp - .5 \pgf@y - outer sep
\pgf@y=-.5\pgf@y%
\advance\pgf@y by-.5\dp\pgfnodeparttextbox%
\advance\pgf@y by.5\ht\pgfnodeparttextbox%
\pgfmathsetlength\pgf@ya{\pgfkeysvalueof{/pgf/outer ysep}}%
\advance\pgf@y by-\pgf@ya%
}%
%
% Anchors
%
\anchor{center}{
\pgf@process{\northeast}%
\pgf@xa=.5\pgf@x%
\pgf@ya=.5\pgf@y%
\pgf@process{\southwest}%
\pgf@x=.5\pgf@x%
\pgf@y=.5\pgf@y%
\advance\pgf@x by \pgf@xa%
\advance\pgf@y by \pgf@ya%
}%
\anchor{mid}{\pgf@anchor@rectangle@center\pgfmathsetlength\pgf@y{.5ex}}%
\anchor{base}{\pgf@anchor@rectangle@center\pgf@y=0pt}%
\anchor{north}{
\pgf@process{\southwest}%
\pgf@xa=.5\pgf@x%
\pgf@process{\northeast}%
\pgf@x=.5\pgf@x%
\advance\pgf@x by \pgf@xa%
}%
\anchor{south}{
\pgf@process{\northeast}%
\pgf@xa=.5\pgf@x%
\pgf@process{\southwest}%
\pgf@x=.5\pgf@x%
\advance\pgf@x by \pgf@xa%
}%
\anchor{west}{
\pgf@process{\northeast}%
\pgf@ya=.5\pgf@y%
\pgf@process{\southwest}%
\pgf@y=.5\pgf@y%
\advance\pgf@y by \pgf@ya%
}%
\anchor{mid west}{\southwest\pgfmathsetlength\pgf@y{.5ex}}%
\anchor{base west}{\southwest\pgf@y=0pt}%
\anchor{north west}{
\southwest
\pgf@xa=\pgf@x
\northeast
\pgf@x=\pgf@xa}%
\anchor{south west}{\southwest}%
\anchor{east}{%
\pgf@process{\southwest}%
\pgf@ya=.5\pgf@y%
\pgf@process{\northeast}%
\pgf@y=.5\pgf@y%
\advance\pgf@y by \pgf@ya%
}%
\anchor{mid east}{\northeast\pgfmathsetlength\pgf@y{.5ex}}%
\anchor{base east}{\northeast\pgf@y=0pt}%
\anchor{north east}{\northeast}%
\anchor{south east}{
\northeast
\pgf@xa=\pgf@x
\southwest
\pgf@x=\pgf@xa
}%
\anchorborder{%
\pgf@xb=\pgf@x% xb/yb is target
\pgf@yb=\pgf@y%
\southwest%
\pgf@xa=\pgf@x% xa/ya is se
\pgf@ya=\pgf@y%
\northeast%
\advance\pgf@x by-\pgf@xa%
\advance\pgf@y by-\pgf@ya%
\pgf@xc=.5\pgf@x% x/y is half width/height
\pgf@yc=.5\pgf@y%
\advance\pgf@xa by\pgf@xc% xa/ya becomes center
\advance\pgf@ya by\pgf@yc%
\edef\pgf@marshal{%
\noexpand\pgfpointborderrectangle
{\noexpand\pgfqpoint{\the\pgf@xb}{\the\pgf@yb}}
{\noexpand\pgfqpoint{\the\pgf@xc}{\the\pgf@yc}}%
}%
\pgf@process{\pgf@marshal}%
\advance\pgf@x by\pgf@xa%
\advance\pgf@y by\pgf@ya%
}%
%
% Background path
%
\backgroundpath{
\pgfpathrectanglecorners
{\pgfpointadd{\southwest}{\pgfpoint{\pgfkeysvalueof{/pgf/outer xsep}}{\pgfkeysvalueof{/pgf/outer ysep}}}}
{\pgfpointadd{\northeast}{\pgfpointscale{-1}{\pgfpoint{\pgfkeysvalueof{/pgf/outer xsep}}{\pgfkeysvalueof{/pgf/outer ysep}}}}}
}%
}%
% Special current path start coordinate:
\expandafter\def\csname pgf@sh@ns@current subpath start\endcsname{coordinate}%
\expandafter\def\csname pgf@sh@np@current subpath start\endcsname{%
\def\centerpoint{\expandafter\pgfqpoint\pgfsyssoftpath@lastmoveto}%
}%
\expandafter\def\csname pgf@sh@nt@current subpath start\endcsname{{1}{0}{0}{1}{0pt}{0pt}}%
\expandafter\def\csname pgf@sh@pi@current subpath start\endcsname{\pgfpictureid}%
% Special current bounding box rectangle:
\expandafter\def\csname pgf@sh@ns@current bounding box\endcsname{rectangle}%
\expandafter\def\csname pgf@sh@np@current bounding box\endcsname{%
\def\southwest{\pgfqpoint{\pgf@picminx}{\pgf@picminy}}%
\def\northeast{\pgfqpoint{\pgf@picmaxx}{\pgf@picmaxy}}%
}%
\expandafter\def\csname pgf@sh@nt@current bounding box\endcsname{{1}{0}{0}{1}{0pt}{0pt}}%
\expandafter\def\csname pgf@sh@pi@current bounding box\endcsname{\pgfpictureid}%
% Special current path bounding box rectangle:
\expandafter\def\csname pgf@sh@ns@current path bounding box\endcsname{rectangle}%
\expandafter\def\csname pgf@sh@np@current path bounding box\endcsname{%
\def\southwest{\pgfqpoint{\pgf@pathminx}{\pgf@pathminy}}%
\def\northeast{\pgfqpoint{\pgf@pathmaxx}{\pgf@pathmaxy}}%
}%
\expandafter\def\csname pgf@sh@nt@current path bounding box\endcsname{{1}{0}{0}{1}{0pt}{0pt}}%
\expandafter\def\csname pgf@sh@pi@current path bounding box\endcsname{\pgfpictureid}%
% Special current page bounding box rectangle:
\expandafter\def\csname pgf@sh@ns@current page\endcsname{rectangle}%
\expandafter\def\csname pgf@sh@np@current page\endcsname{%
\def\southwest{\pgfpointorigin}%
\def\northeast{\pgfpoint{\pgfsys@thepagewidth}{\pgfsys@thepageheight}}%
}%
\expandafter\def\csname pgf@sh@nt@current page\endcsname{{1}{0}{0}{1}{0pt}{0pt}}%
\expandafter\def\csname pgf@sh@pi@current page\endcsname{pgfpageorigin}%
% Special scope bounding box rectangle:
\pgfkeys{/pgf/local bounding box/.code={%
\expandafter\gdef\csname pgf@sh@ns@#1\endcsname{rectangle}
\expandafter\gdef\csname pgf@sh@np@#1\endcsname{%
\def\southwest{\pgfqpoint{\csname pgf@lbb@minx@#1\endcsname}{\csname pgf@lbb@miny@#1\endcsname}}%
\def\northeast{\pgfqpoint{\csname pgf@lbb@maxx@#1\endcsname}{\csname pgf@lbb@maxy@#1\endcsname}}%
}
\expandafter\gdef\csname pgf@sh@nt@#1\endcsname{{1}{0}{0}{1}{0pt}{0pt}}
\expandafter\gdef\csname pgf@sh@pi@#1\endcsname{\pgfpictureid}
\expandafter\gdef\csname pgf@lbb@maxx@#1\endcsname{-16000pt}%
\expandafter\gdef\csname pgf@lbb@minx@#1\endcsname{16000pt}%
\expandafter\gdef\csname pgf@lbb@maxy@#1\endcsname{-16000pt}%
\expandafter\gdef\csname pgf@lbb@miny@#1\endcsname{16000pt}%
\pgf@size@hookedtrue%
\expandafter\def\expandafter\pgf@path@size@hook\expandafter{\pgf@path@size@hook\pgf@lbb@do{#1}}
},
/pgf/freeze local bounding box/.code={%
{%
\csname pgf@sh@np@#1\endcsname%
\southwest%
\pgf@xa=\pgf@x%
\pgf@ya=\pgf@y%
\northeast%
\expandafter\xdef\csname pgf@sh@np@#1\endcsname{%
\noexpand\def\noexpand\southwest{\noexpand\pgfqpoint{\the\pgf@xa}{\the\pgf@ya}}%
\noexpand\def\noexpand\northeast{\noexpand\pgfqpoint{\the\pgf@x}{\the\pgf@y}}%
}%
}%
},
}%
\def\pgf@lbb@do#1{%
\ifdim\pgf@size@hook@x<\csname pgf@lbb@minx@#1\endcsname\expandafter\xdef\csname pgf@lbb@minx@#1\endcsname{\the\pgf@size@hook@x}\fi%
\ifdim\pgf@size@hook@x>\csname pgf@lbb@maxx@#1\endcsname\expandafter\xdef\csname pgf@lbb@maxx@#1\endcsname{\the\pgf@size@hook@x}\fi%
\ifdim\pgf@size@hook@y<\csname pgf@lbb@miny@#1\endcsname\expandafter\xdef\csname pgf@lbb@miny@#1\endcsname{\the\pgf@size@hook@y}\fi%
\ifdim\pgf@size@hook@y>\csname pgf@lbb@maxy@#1\endcsname\expandafter\xdef\csname pgf@lbb@maxy@#1\endcsname{\the\pgf@size@hook@y}\fi%
}%
%
% Circle
%
\pgfdeclareshape{circle}
%
% Draws a circle around the text
%
{%
\savedanchor\centerpoint{%
\pgf@x=.5\wd\pgfnodeparttextbox%
\pgf@y=.5\ht\pgfnodeparttextbox%
\advance\pgf@y by-.5\dp\pgfnodeparttextbox%
}%
\saveddimen\radius{%
%
% Calculate ``height radius''
%
\pgf@ya=.5\ht\pgfnodeparttextbox%
\advance\pgf@ya by.5\dp\pgfnodeparttextbox%
\pgfmathsetlength\pgf@yb{\pgfkeysvalueof{/pgf/inner ysep}}%
\advance\pgf@ya by\pgf@yb%
%
% Calculate ``width radius''
%
\pgf@xa=.5\wd\pgfnodeparttextbox%
\pgfmathsetlength\pgf@xb{\pgfkeysvalueof{/pgf/inner xsep}}%
\advance\pgf@xa by\pgf@xb%
%
% Calculate length of radius vector:
%
\pgf@process{\pgfpointnormalised{\pgfqpoint{\pgf@xa}{\pgf@ya}}}%
\ifdim\pgf@x>\pgf@y%
\c@pgf@counta=\pgf@x%
\ifnum\c@pgf@counta=0\relax%
\else%
\divide\c@pgf@counta by 255\relax%
\pgf@xa=16\pgf@xa\relax%
\divide\pgf@xa by\c@pgf@counta%
\pgf@xa=16\pgf@xa\relax%
\fi%
\else%
\c@pgf@counta=\pgf@y%
\ifnum\c@pgf@counta=0\relax%
\else%
\divide\c@pgf@counta by 255\relax%
\pgf@ya=16\pgf@ya\relax%
\divide\pgf@ya by\c@pgf@counta%
\pgf@xa=16\pgf@ya\relax%
\fi%
\fi%
\pgf@x=\pgf@xa%
%
% If necessary, adjust radius so that the size requirements are
% met:
%
\pgfmathsetlength{\pgf@xb}{\pgfkeysvalueof{/pgf/minimum width}}%
\pgfmathsetlength{\pgf@yb}{\pgfkeysvalueof{/pgf/minimum height}}%
\ifdim\pgf@x<.5\pgf@xb%
\pgf@x=.5\pgf@xb%
\fi%
\ifdim\pgf@x<.5\pgf@yb%
\pgf@x=.5\pgf@yb%
\fi%
%
% Now, add larger of outer separations.
%
\pgfmathsetlength{\pgf@xb}{\pgfkeysvalueof{/pgf/outer xsep}}%
\pgfmathsetlength{\pgf@yb}{\pgfkeysvalueof{/pgf/outer ysep}}%
\ifdim\pgf@xb<\pgf@yb%
\advance\pgf@x by\pgf@yb%
\else%
\advance\pgf@x by\pgf@xb%
\fi%
}%
%
% Anchors
%
\anchor{center}{\centerpoint}%
\anchor{mid}{\centerpoint\pgfmathsetlength\pgf@y{.5ex}}%
\anchor{base}{\centerpoint\pgf@y=0pt}%
\anchor{north}{\centerpoint\advance\pgf@y by\radius}%
\anchor{south}{\centerpoint\advance\pgf@y by-\radius}%
\anchor{west}{\centerpoint\advance\pgf@x by-\radius}%
\anchor{east}{\centerpoint\advance\pgf@x by\radius}%
\anchor{mid west}{\centerpoint\advance\pgf@x by-\radius\pgfmathsetlength\pgf@y{.5ex}}%
\anchor{mid east}{\centerpoint\advance\pgf@x by\radius\pgfmathsetlength\pgf@y{.5ex}}%
\anchor{base west}{\centerpoint\advance\pgf@x by-\radius\pgf@y=0pt}%
\anchor{base east}{\centerpoint\advance\pgf@x by\radius\pgf@y=0pt}%
\anchor{north west}{
\centerpoint
\pgf@xa=\radius
\advance\pgf@x by-0.707107\pgf@xa
\advance\pgf@y by0.707107\pgf@xa
}%
\anchor{south west}{
\centerpoint
\pgf@xa=\radius
\advance\pgf@x by-0.707107\pgf@xa
\advance\pgf@y by-0.707107\pgf@xa
}%
\anchor{north east}{
\centerpoint
\pgf@xa=\radius
\advance\pgf@x by0.707107\pgf@xa
\advance\pgf@y by0.707107\pgf@xa
}%
\anchor{south east}{
\centerpoint
\pgf@xa=\radius
\advance\pgf@x by0.707107\pgf@xa
\advance\pgf@y by-0.707107\pgf@xa
}%
\anchorborder{%
\pgf@xa=\pgf@x%
\pgf@ya=\pgf@y%
\edef\pgf@marshal{%
\noexpand\pgfpointborderellipse
{\noexpand\pgfqpoint{\the\pgf@xa}{\the\pgf@ya}}
{\noexpand\pgfqpoint{\radius}{\radius}}%
}%
\pgf@marshal%
\pgf@xa=\pgf@x%
\pgf@ya=\pgf@y%
\centerpoint%
\advance\pgf@x by\pgf@xa%
\advance\pgf@y by\pgf@ya%
}%
%
% Background path
%
\backgroundpath{%
\pgfutil@tempdima=\radius%
\pgfmathsetlength{\pgf@xb}{\pgfkeysvalueof{/pgf/outer xsep}}%
\pgfmathsetlength{\pgf@yb}{\pgfkeysvalueof{/pgf/outer ysep}}%
\ifdim\pgf@xb<\pgf@yb%
\advance\pgfutil@tempdima by-\pgf@yb%
\else%
\advance\pgfutil@tempdima by-\pgf@xb%
\fi%
\pgfpathcircle{\centerpoint}{\pgfutil@tempdima}%
}%
}%
\endinput