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% Copyright 2007-2009 by Massimo Redaelli
%
% 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/LICENSE for more details.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Bipole label positioning
%% Options
\ctikzset{label/.style = { l=#1 } }
\ctikzset{l/.code = {
\pgfkeys{/tikz/circuitikz/bipole/label/name=#1}
\ctikzsetvalof{bipole/label/unit}{}
\ifpgf@circ@siunitx
\pgf@circ@handleSI{#1}
\ifpgf@circ@siunitx@res
\edef\pgf@temp{\pgf@circ@handleSI@val}
\pgfkeyslet{/tikz/circuitikz/bipole/label/name}{\pgf@temp}
\edef\pgf@temp{\pgf@circ@handleSI@unit}
\pgfkeyslet{/tikz/circuitikz/bipole/label/unit}{\pgf@temp}
\else
\fi
\else
\fi
}}
\ctikzset{label above/.code = {
l=#1,
\circuitikzbasekey/bipole/label/position=90 }
}
\ctikzset{l^/.style = {
l=#1,
\circuitikzbasekey/bipole/label/position=90 }
}
\ctikzset{label below/.code = {
l=#1,
\circuitikzbasekey/bipole/label/position=-90 }
}
\ctikzset{l_/.style = {
l=#1,
\circuitikzbasekey/bipole/label/position=-90 }
}
\ctikzset{annotation/.style = { a=#1 } }
\ctikzset{a/.code = {
\pgfkeys{/tikz/circuitikz/bipole/annotation/name=#1}
\ctikzsetvalof{bipole/annotation/unit}{}
\ifpgf@circ@siunitx
\pgf@circ@handleSI{#1}
\ifpgf@circ@siunitx@res
\edef\pgf@temp{\pgf@circ@handleSI@val}
\pgfkeyslet{/tikz/circuitikz/bipole/annotation/name}{\pgf@temp}
\edef\pgf@temp{\pgf@circ@handleSI@unit}
\pgfkeyslet{/tikz/circuitikz/bipole/annotation/unit}{\pgf@temp}
\else
\fi
\else
\fi
}}
\ctikzset{annotation above/.code = {
a=#1,
\circuitikzbasekey/bipole/annotation/position=90 }
}
\ctikzset{a^/.style = {
a=#1,
\circuitikzbasekey/bipole/annotation/position=90 }
}
\ctikzset{annotation below/.code = {
a=#1,
\circuitikzbasekey/bipole/annotation/position=-90 }
}
\ctikzset{a_/.style = {
a=#1,
\circuitikzbasekey/bipole/annotation/position=-90 }
}
\def\pgf@circ@drawlabels#1{
\pgfextra{
\pgfmathsubtract{\pgf@circ@direction}{90}
\edef\pgf@circ@labanc{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
\edef\pgf@circ@temp{\ctikzvalof{bipole/#1/position}}
\ifnum \pgf@circ@temp < 0
\pgfmathadd{\pgf@circ@labanc}{180}
\edef\pgf@circ@labanc{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
\fi
\ifpgf@circuit@bipole@inverted
\pgfmathadd{\pgf@circ@temp}{180} %If shape is inverted, use opposite anchor
\edef\pgf@circ@temp{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
\fi
\ifnum \ctikzvalof{mirror value} = -1
\pgfmathadd{\pgf@circ@temp}{180} %If shape is mirrored, use opposite anchor
\edef\pgf@circ@temp{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
\fi
}
%Firstly, place a coodinate directly at the edge of the shape
(\ctikzvalof{bipole/name}.\pgf@circ@temp) coordinate (labelcoor)
%now decide, which labels should be drawn
\pgfextra{
\edef\pgf@temp{\ctikzvalof{label/align}}
\def\pgf@circ@temp{straight}
}
\ifx\pgf@temp\pgf@circ@temp %straight
\pgf@circ@drawreglabels{#1}
\else
\pgfextra{\def\pgf@circ@temp{rotate}}
\ifx\pgf@temp\pgf@circ@temp %rotate
\pgf@circ@drawrotlabels{#1}
\else% smart
\pgf@circ@drawsmartlabels{#1}
\fi
\fi
}
\def\pgf@circ@drawsmartlabels#1{
\pgfextra{
\pgfmathmod{\pgf@circ@direction}{90}
\edef\pgfcircmathresult{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
}
\ifnum \pgfcircmathresult > 20
\ifnum \pgfcircmathresult < 70
\pgf@circ@drawrotlabels{#1}
\else
\pgf@circ@drawreglabels{#1}
\fi
\else
\pgf@circ@drawreglabels{#1}
\fi
}
\def\pgf@circ@drawrotlabels#1{
\pgfextra{
\ifnum \ctikzvalof{bipole/#1/position}>0
%we need some more space for placement below, due to mid-anchor
\def\pgf@circ@labposdistance{1.5ex}
\else
\def\pgf@circ@labposdistance{2ex}
\fi
%Calculate rotation of the label from direction and strip decimals
\edef\pgfcirclabrot{\expandafter\pgf@circ@stripdecimals\pgf@circ@direction\pgf@nil}
% rotate the label at second or third quadrant:
\ifnum \pgfcirclabrot > 90 \ifnum \pgfcirclabrot < 270
\pgfmathsubtract{\pgf@circ@direction}{180}
\edef\pgfcirclabrot{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
%invert the space relationships due to rotatet strings
\ifnum \ctikzvalof{bipole/#1/position}>0
\def\pgf@circ@labposdistance{2ex}
\else
\def\pgf@circ@labposdistance{1.5ex}
\fi
\fi\fi
\pgfmathparse{\ctikzvalof{bipole/#1/position}>0?\pgf@circ@direction+90:\pgf@circ@direction-90}
\edef\pgf@circ@labposangle{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
}
(labelcoor)++(\pgf@circ@labposangle:\pgf@circ@labposdistance) coordinate(labelcoor)
node[anchor=mid,rotate=\pgfcirclabrot](\ctikzvalof{bipole/name}#1){\pgf@circ@finallabels{#1}}
}
\def\pgf@circ@drawreglabels#1{
%Now calculate all shape positions
%Use mid-anchor at x-axis and base-anchor at y-axis, respectively.
%All points between will be addressed by angled-anchors:
\pgfextra{
\pgfmathadd{\pgf@circ@labanc}{90}
\edef\pgf@circ@temp{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
\pgfmathparse{mod(\pgf@circ@temp,180)>135?mod(\pgf@circ@temp,180)-180:mod(\pgf@circ@temp,180)}
\edef\pgfcircmathresult{\expandafter\pgf@circ@stripdecimals\pgfmathresult\pgf@nil}
}
%Values between -5 and 5 are at pos /neg x-axis, values around 90 are at both y-axis
\ifnum \pgfcircmathresult > 84 \ifnum \pgfcircmathresult< 96
\pgfextra{\edef\pgf@circ@labpos{\expandafter\pgf@circ@stripdecimals\pgf@circ@direction\pgf@nil}}
\ifnum \pgf@circ@labpos > 180
\ifnum \ctikzvalof{bipole/#1/position} > 0
\pgfextra{\def\pgf@circ@labanc{mid west}}
\else
\pgfextra{\def\pgf@circ@labanc{mid east}}
\fi
\else
\ifnum \ctikzvalof{bipole/#1/position} > 0
\pgfextra{\def\pgf@circ@labanc{mid east}}
\else
\pgfextra{\def\pgf@circ@labanc{mid west}}
\fi
\fi
\fi\fi
\ifnum \pgfcircmathresult <6
\ifnum \ctikzvalof{bipole/#1/position} < 0
%we need some more space for placement below, due to mid-anchor
(labelcoor)++(-\pgf@circ@labanc:2ex) coordinate(labelcoor)
\else
(labelcoor)++(-\pgf@circ@labanc:1.5ex) coordinate(labelcoor)
\fi
\pgfextra{\def\pgf@circ@labanc{mid}}
\fi
(labelcoor) node[anchor=\pgf@circ@labanc](\ctikzvalof{bipole/name}#1){\pgf@circ@finallabels{#1}}
}
\def\pgf@circ@finallabels#1{%
\edef\pgf@temp{}%
\edef\pgf@circ@temp{\ctikzvalof{bipole/#1/unit}}%
\ifx\pgf@temp\pgf@circ@temp%
\ctikzvalof{bipole/#1/name}%
\else%
$\SI{\ctikzvalof{bipole/#1/name}}{\ctikzvalof{bipole/#1/unit}}$%
\fi%
}
\ctikzset{text/.style = { t=#1 } }
\ctikzset{t/.code = {
\ctikzsetvalof{bipoles/twoport/text}{#1}
}}
\endinput
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