diff options
author | Karl Berry <karl@freefriends.org> | 2014-02-27 00:01:50 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2014-02-27 00:01:50 +0000 |
commit | 90ae413a94da014dbf7a6a8ab584f7c668483a5a (patch) | |
tree | 4e0528a2b2fb2004988e7fc804ea2f1354f1f5d5 /Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibrarydecorations.text.code.tex | |
parent | 800cc56380d1edfe567a6a66bef13e8950eb2b0c (diff) |
pgf 3.0.0
git-svn-id: svn://tug.org/texlive/trunk@33057 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibrarydecorations.text.code.tex')
-rw-r--r-- | Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibrarydecorations.text.code.tex | 693 |
1 files changed, 692 insertions, 1 deletions
diff --git a/Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibrarydecorations.text.code.tex b/Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibrarydecorations.text.code.tex index e063ba185f0..b75fcc6a562 100644 --- a/Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibrarydecorations.text.code.tex +++ b/Master/texmf-dist/tex/generic/pgf/frontendlayer/tikz/libraries/tikzlibrarydecorations.text.code.tex @@ -1,4 +1,4 @@ -% Copyright 2008 by Mark Wibrow +% Copyright 2013 by Mark Wibrow % % This file may be distributed and/or modified % @@ -10,4 +10,695 @@ \usetikzlibrary{decorations} \usepgflibrary{decorations.text} + +% Code for the `text effects along path' decoration + +% Some text constants +% To do: merge these with existing text constants +\def\tikz@lib@dec@te@space@text{space} +\def\tikz@lib@dec@align@left@text{left} +\def\tikz@lib@dec@align@right@text{right} +\def\tikz@lib@dec@align@center@text{center} +\def\tikz@lib@dec@te@none@text{none} + +% Some ifs +\newif\iftikz@lib@dec@te@pathfromtext +\newif\iftikz@lib@dec@te@segmentfromwidth +\newif\iftikz@lib@dec@te@scaletexttopath +\newif\iftikz@lib@dec@te@fittexttopath +\newif\iftikz@lib@dec@te@wordsep +\newif\iftikz@lib@dec@te@finalletter + + +% Utility macros +% To do: integrate with exisiting pgf macros +\def\tikz@lib@dec@te@addto@macro#1#2{% + \expandafter\def\expandafter#1\expandafter{#1#2}% +} + +\def\tikz@lib@dec@te@namelet#1#2{% + \expandafter\expandafter\expandafter\let\expandafter\expandafter\csname\expandafter#1\expandafter\endcsname\expandafter=\csname#2\endcsname% +} + +\def\tikz@lib@dec@te@advancecountmacro#1#2{% + \pgfutil@tempcnta=#1\relax% + \advance\pgfutil@tempcnta by#2\relax% + \edef#1{\the\pgfutil@tempcnta}% +} + +\def\tikz@lib@dec@te@advancedimenmacro#1#2{% + \pgf@x=#1\relax% + \advance\pgf@x by#2\relax% + \edef#1{\the\pgf@x}% +} + +% Macros for defining and updating text parameters +\def\tikz@lib@dec@te@start@parameters#1{% + \expandafter\let\csname tikz@lib@dec@te@character@#1\endcsname=\pgfutil@empty% +} + +\def\tikz@lib@dec@te@addto@parameters#1#2{% + \expandafter\tikz@lib@dec@te@addto@macro\expandafter% + {\csname tikz@lib@dec@te@character@#1\endcsname}{#2}% +} +\def\tikz@lib@dec@te@addmacroto@parameters#1#2{% + \def\tikz@lib@dec@te@marshal{\expandafter\tikz@lib@dec@te@addto@macro\expandafter% + {\csname tikz@lib@dec@te@character@#1\endcsname}}% + \expandafter\tikz@lib@dec@te@marshal\expandafter{\expandafter\def\expandafter#2\expandafter{#2}}% +} + +\def\tikz@lib@dec@te@getparameters#1{\csname tikz@lib@dec@te@character@#1\endcsname} + + + +\let\tikz@lib@dec@te@textoptions=\pgfutil@empty +\let\tikz@lib@dec@te@widthoptions=\pgfutil@empty +\let\tikz@lib@dec@te@charactercountvar=\pgfutil@empty +\let\tikz@lib@dec@te@charactertotalvar=\pgfutil@empty +\let\tikz@lib@dec@te@lettercountvar=\pgfutil@empty +\let\tikz@lib@dec@te@lettertotalvar=\pgfutil@empty +\let\tikz@lib@dec@te@wordcountvar=\pgfutil@empty +\let\tikz@lib@dec@te@wordctotalvar=\pgfutil@empty +\let\tikz@lib@dec@te@transformtext=\pgfutil@empty% + + +% Keys... lots of them... +\pgfkeys{/pgf/decoration/text effects/.cd, + .unknown/.code={\let\tikz@lib@dec@te@key@tmp=\pgfkeyscurrentname% + \pgfkeysalso{/tikz/\tikz@lib@dec@te@key@tmp={#1}}}, + path from text/.is if=tikz@lib@dec@te@pathfromtext, + path from text angle/.store in=\tikz@lib@dec@te@pathfromtextangle, + path from text angle=0, + fit text to path/.is if=tikz@lib@dec@te@fittexttopath, + characters/.style={/pgf/decoration/text effects/every character/.style={#1}}, + characters/.append/.code={\pgfkeysalso{/pgf/decoration/text effects/every character/.append style={#1}}}, + character widths/.code={\pgfkeysalso{/pgf/decoration/text effects/every character width/.style={#1}}}, + character widths/.append/.code={\pgfkeysalso{/pgf/decoration/text effects/every character width/.append style={#1}}}, + character count/.store in=\tikz@lib@dec@te@charactercountvar, + character count=, + character total/.store in=\tikz@lib@dec@te@charactertotalvar, + character total=, + letter count/.store in=\tikz@lib@dec@te@lettercountvar, + letter count=, + letter total/.store in=\tikz@lib@dec@te@lettertotalvar, + letter total=, + word count/.store in=\tikz@lib@dec@te@wordcountvar, + word count=, + word total/.store in=\tikz@lib@dec@te@wordtotalvar, + word total=, + % + style characters/.code args={#1 with #2}{\tikz@lib@dec@te@parse@stylecharacters{#1}{#2}}, + text along path/.style={ + inner xsep=0pt, + anchor=base, + transform shape + }, + segment from width/.is if=tikz@lib@dec@te@segmentfromwidth, + segment from width=true, + word separator/.code={% + \def\tikz@lib@dec@te@tmp{#1}% + \ifx\tikz@lib@dec@te@tmp\tikz@lib@dec@te@space@text% + \let\tikz@lib@dec@te@wordsep=\tikz@lib@dec@te@spacetoken% + \else% + \def\tikz@lib@dec@te@wordsep{#1} + \fi}, + word separator=space, + character command/.code={% + \def\tikz@lib@dec@te@tmp{#1}% + \ifx\tikz@lib@dec@te@tmp\pgfutil@empty% + \def\tikz@lib@dec@te@charactercommand{\tikz@lib@dec@te@charactertypesetonly}% + \else% + \def\tikz@lib@dec@te@charactercommand{#1}% + \fi% + }, + character command=, + every character width/.style={/pgf/decoration/text effects/every character/.try}, + every character/.style={}, + reverse text/.code={\tikz@lib@dec@te@addto@macro\tikz@lib@dec@te@transformtext% + {\tikz@lib@dec@te@reversetext}}, + group letters into words/.code={\tikz@lib@dec@te@addto@macro\tikz@lib@dec@te@transformtext% + {\tikz@lib@dec@te@groupletters}}, + group letters/.code={\tikz@lib@dec@te@addto@macro\tikz@lib@dec@te@transformtext% + {\tikz@lib@dec@te@groupletters}}, + replace characters/.code args={#1 with #2}{\tikz@lib@dec@te@parse@replacecharacters{#1}{#2}}, + scale text to path/.is if=tikz@lib@dec@te@scaletexttopath, + fit text to path/.is if=tikz@lib@dec@te@fittexttopath, + repeat text/.store in=\tikz@lib@dec@te@repeattext, + repeat text/.default=-1, + repeat text=0, +} + + +\def\tikz@lib@dec@te@charactertypesetonly#1{#1} + +\tikzset{% + text effects/.code={\pgfkeysalso{/pgf/decoration/text effects/.cd,#1}}, +} + + + + + + +% Prepare the decoration text +% +% This sets up all the character/letter/word, counts/totals +% and caluclates the default width of the characters/text +% (which may be modified later). +% +\def\tikz@lib@dec@te@preparetext{% + % Step 1: scan all the characters in the decoration text + \let\tikz@lib@dec@te@text=\pgfdecorationtext% + \tikz@lib@dec@te@scancharacters{% + \expandafter\let\csname tikz@lib@dec@te@character@\tikz@lib@dec@te@scancount @token\endcsname=% + \tikz@lib@dec@te@character% + }% + \let\tikz@lib@dec@te@charactertotalcount=\tikz@lib@dec@te@scancount% + % Step 2: reverse and/or group characters/letters. + \ifx\tikz@lib@dec@te@transformtext\pgfutil@empty% + \else% + \tikz@lib@dec@te@transformtext% + \fi% + % Step 3: get the character/letter/word counts + \def\tikz@lib@dec@te@charactercount{0}% + \def\tikz@lib@dec@te@wordcount{0}% + \def\tikz@lib@dec@te@wordsepcount{0}% + \def\tikz@lib@dec@te@lettercount{0}% + \def\tikz@lib@dec@te@lastcharacter{0}% + \pgfmathloop% + \ifnum\pgfmathcounter>\tikz@lib@dec@te@charactertotalcount% + \ifnum\tikz@lib@dec@te@lettercount>0\relax% + \tikz@lib@dec@te@addto@parameters{\tikz@lib@dec@te@lastcharactercount}{\tikz@lib@dec@te@finallettertrue}% + \fi + \else% + \expandafter\let\expandafter\tikz@lib@dec@te@character\expandafter=\csname tikz@lib@dec@te@character@\pgfmathcounter @token\endcsname% + \tikz@lib@dec@te@advancecountmacro{\tikz@lib@dec@te@charactercount}{1}% + \tikz@lib@dec@te@start@parameters{\tikz@lib@dec@te@charactercount}% + \tikz@lib@dec@te@addmacroto@parameters{\tikz@lib@dec@te@charactercount}{\tikz@lib@dec@te@charactercount}% + \ifx\tikz@lib@dec@te@character\tikz@lib@dec@te@wordsep% + \tikz@lib@dec@te@advancecountmacro{\tikz@lib@dec@te@wordsepcount}{1}% + \ifnum\tikz@lib@dec@te@lettercount>0\relax% + \tikz@lib@dec@te@addto@parameters{\tikz@lib@dec@te@lastcharactercount}{\tikz@lib@dec@te@finallettertrue}% + \fi + \def\tikz@lib@dec@te@lettercount{0}% + \tikz@lib@dec@te@addto@parameters{\tikz@lib@dec@te@charactercount}{\tikz@lib@dec@te@wordseptrue}% + \else + \ifnum\tikz@lib@dec@te@lettercount=0\relax% + \tikz@lib@dec@te@advancecountmacro\tikz@lib@dec@te@wordcount{1}% + \fi% + \tikz@lib@dec@te@addto@parameters{\tikz@lib@dec@te@charactercount}{\tikz@lib@dec@te@finalletterfalse}% + \tikz@lib@dec@te@advancecountmacro{\tikz@lib@dec@te@lettercount}{1}% + \tikz@lib@dec@te@addto@parameters{\tikz@lib@dec@te@charactercount}{\tikz@lib@dec@te@wordsepfalse}% + \expandafter\let\csname tikz@lib@dec@te@word \tikz@lib@dec@te@wordcount @lettercount\endcsname=\tikz@lib@dec@te@lettercount% + \fi% + \tikz@lib@dec@te@addmacroto@parameters{\tikz@lib@dec@te@charactercount}{\tikz@lib@dec@te@lettercount}% + \tikz@lib@dec@te@addmacroto@parameters{\tikz@lib@dec@te@charactercount}{\tikz@lib@dec@te@wordcount}% + \tikz@lib@dec@te@addmacroto@parameters{\tikz@lib@dec@te@charactercount}{\tikz@lib@dec@te@character}% + \let\tikz@lib@dec@te@lastcharactercount=\pgfmathcounter% + \repeatpgfmathloop% + \let\tikz@lib@dec@te@wordtotal=\tikz@lib@dec@te@wordcount% + % Step 4: add character/letter/word totals + \pgfmathloop + \ifnum\pgfmathcounter>\tikz@lib@dec@te@charactertotalcount% + \else% + \tikz@lib@dec@te@addmacroto@parameters{\pgfmathcounter}{\tikz@lib@dec@te@charactertotalcount}% + \tikz@lib@dec@te@addmacroto@parameters{\pgfmathcounter}{\tikz@lib@dec@te@wordtotal}% + \expandafter\let\expandafter\tikz@lib@dec@te@lettertotalcount\expandafter=\csname tikz@lib@dec@te@word \tikz@lib@dec@te@wordcount @lettercount\endcsname% + \tikz@lib@dec@te@addmacroto@parameters{\pgfmathcounter}{\tikz@lib@dec@te@lettertotalcount}% + \repeatpgfmathloop% + % Step 5: calculate the the text and character width + % but do not add to the parameters yet. + \def\tikz@lib@dec@te@textwidth{0pt}% + \pgfmathloop% + \ifnum\pgfmathcounter>\tikz@lib@dec@te@charactertotalcount% + \else% + \def\tikz@lib@dec@te@characterwidth{0pt}% + \tikz@lib@dec@te@getcharacterwidth{\pgfmathcounter}% + \expandafter\let\csname tikz@lib@dec@te@character@\pgfmathcounter @width\endcsname=\tikz@lib@dec@te@characterwidth% + \pgf@x=\tikz@lib@dec@te@characterwidth\relax% + \pgf@x=0.5\pgf@x% + \expandafter\edef\csname tikz@lib@dec@te@character@\pgfmathcounter @prewidth\endcsname{\the\pgf@x}% + \expandafter\edef\csname tikz@lib@dec@te@character@\pgfmathcounter @postwidth\endcsname{\the\pgf@x}% + \tikz@lib@dec@te@advancedimenmacro{\tikz@lib@dec@te@textwidth}{\tikz@lib@dec@te@characterwidth}% + \repeatpgfmathloop% +} + +% Does the category code of the space matter? +\def\tikz@lib@dec@te@spacetoken{ } + +\let\tikz@lib@dec@te@wordsep=\tikz@lib@dec@te@spacetoken + + +% Scan and count the characters in \tikz@lib@dec@te@text +% +% Create macros \tikz@lib@dec@te@character@<n>@token containing +% the nth character. +% +% Total number of characters is store in +% \tikz@lib@dec@te@chractertotal@count +% +\def\tikz@lib@dec@te@scancharacters#1{% + \def\tikz@lib@dec@te@@@scancharacters@process{#1}% + \def\tikz@lib@dec@te@scancount{0}% + \expandafter\tikz@lib@dec@te@@scancharacters\tikz@lib@dec@te@text\tikz@lib@dec@te@scancharacters}% + +\def\tikz@lib@dec@te@@scancharacters{% + \futurelet\tikz@lib@dec@te@token\tikz@lib@dec@te@@@scancharacters} + +\def\tikz@lib@dec@te@@@scancharacters{% + \ifx\tikz@lib@dec@te@token\tikz@lib@dec@te@scancharacters% + \let\tikz@lib@dec@te@next=\tikz@lib@dec@te@@@@scancharacters% + \else% + \tikz@lib@dec@te@advancecountmacro\tikz@lib@dec@te@scancount{1}% + \ifx\tikz@lib@dec@te@token\pgfutil@sptoken% + \let\tikz@lib@dec@te@next=\tikz@lib@dec@te@@@scancharacters@space% + \else% + \ifx\tikz@lib@dec@te@token\bgroup% + \let\tikz@lib@dec@te@next=\tikz@lib@dec@te@@@scancharacters@bgroup% + \else% + \let\tikz@lib@dec@te@next=\tikz@lib@dec@te@@@scancharacters@normal% + \fi% + \fi% + \fi% + \tikz@lib@dec@te@next% +} + +\def\tikz@lib@dec@te@@@scancharacters@space{% + \let\tikz@lib@dec@te@character=\tikz@lib@dec@te@spacetoken% + \tikz@lib@dec@te@@@scancharacters@process% + \pgfutil@ifnextchar x\tikz@lib@dec@te@@scancharacters\tikz@lib@dec@te@@scancharacters% +} + +\def\tikz@lib@dec@te@@@scancharacters@bgroup#1{% + \def\tikz@lib@dec@te@character{{#1}}% + \tikz@lib@dec@te@@@scancharacters@process% + \tikz@lib@dec@te@@scancharacters% +} + +\def\tikz@lib@dec@te@@@scancharacters@normal#1{% + \def\tikz@lib@dec@te@character{#1}% + \tikz@lib@dec@te@@@scancharacters@process% + \tikz@lib@dec@te@@scancharacters% +} + + +\def\tikz@lib@dec@te@@@@scancharacters#1\tikz@lib@dec@te@scancharacters{} + + +% Reverse the order of the scanned chracters in the text +% (Actually reverse the ordering of the macros containing the characters) +\def\tikz@lib@dec@te@reversetext{% + \c@pgf@counta=\tikz@lib@dec@te@charactertotalcount% + \pgfmathloop% + \ifnum\pgfmathcounter>\c@pgf@counta% + \else% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@tmp}{tikz@lib@dec@te@character@\pgfmathcounter @token}% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@character@\pgfmathcounter @token}{tikz@lib@dec@te@character@\the\c@pgf@counta @token}% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@character@\the\c@pgf@counta @token}{tikz@lib@dec@te@tmp}% + \advance\c@pgf@counta by-1\relax% + \repeatpgfmathloop% +} + +% Group letters (i.e., anything that isn't the word separator) +% as single characters (words). +\def\tikz@lib@dec@te@groupletters{% + \c@pgf@counta=0\relax% + \let\tikz@lib@dec@te@tmp=\pgfutil@empty% + \let\tikz@lib@dec@te@@tmp=\pgfutil@empty% + \pgfmathloop% + \ifnum\pgfmathcounter>\tikz@lib@dec@te@charactertotalcount% + \ifx\tikz@lib@dec@te@@tmp\pgfutil@empty% + \else% + \advance\c@pgf@counta by1\relax% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@character@\the\c@pgf@counta @token}{tikz@lib@dec@te@@tmp}% + \fi% + \else% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@tmp}{tikz@lib@dec@te@character@\pgfmathcounter @token}% + \ifx\tikz@lib@dec@te@tmp\tikz@lib@dec@te@wordsep% + \advance\c@pgf@counta by1\relax% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@character@\the\c@pgf@counta @token}{tikz@lib@dec@te@@tmp}% + \let\tikz@lib@dec@te@@tmp=\pgfutil@empty% + \advance\c@pgf@counta by1\relax% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@character@\the\c@pgf@counta @token}{tikz@lib@dec@te@wordsep}% + \else% + \expandafter\tikz@lib@dec@te@addto@macro\expandafter{\expandafter\tikz@lib@dec@te@@tmp\expandafter}\expandafter{\tikz@lib@dec@te@tmp}% + \fi% + \repeatpgfmathloop% + \edef\tikz@lib@dec@te@charactertotalcount{\the\c@pgf@counta}% +} + + +% Get width of node containing only the current character. +\def\tikz@lib@dec@te@getcharacterwidth#1{% + \csname tikz@lib@dec@te@character@#1\endcsname% + \tikz@lib@dec@te@getoptions{every character width/.try}% + \let\tikz@lib@dec@te@lastcharacterwidth=\tikz@lib@dec@te@characterwidth% + \pgfpositionnodelater\tikz@lib@dec@te@@getcharacterwidth% + \pgfutil@ifundefined{tikz@lib@dec@te@character@replacements@\meaning\tikz@lib@dec@te@character @code}{% + \expandafter\node\expandafter[\tikz@lib@dec@te@options,scale=\tikz@lib@dec@scaledcharacterwidthfactor]% + {\hbox{\tikz@lib@dec@te@charactercommand{\tikz@lib@dec@te@character}}};% + \let\tikz@lib@dec@te@characterwidth=\tikz@lib@dec@te@characterwidth@tmp% + }{% + \tikz@lib@dec@te@getcharacter@replacementwidth{\tikz@lib@dec@te@character}% + \let\tikz@lib@dec@te@characterwidth=\tikz@lib@dec@te@character@replacementwidth% + }% +} + +% Update the character parameters with the widths. +\def\tikz@lib@dec@te@addwidthstoparameters{% + \pgfmathloop% + \ifnum\pgfmathcounter>\tikz@lib@dec@te@charactertotalcount% + \else% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@characterwidth}{tikz@lib@dec@te@character@\pgfmathcounter @width}% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@characterprewidth}{tikz@lib@dec@te@character@\pgfmathcounter @prewidth}% + \tikz@lib@dec@te@namelet{tikz@lib@dec@te@characterpostwidth}{tikz@lib@dec@te@character@\pgfmathcounter @postwidth}% + \tikz@lib@dec@te@addmacroto@parameters{\pgfmathcounter}{\tikz@lib@dec@te@characterwidth}% + \tikz@lib@dec@te@addmacroto@parameters{\pgfmathcounter}{\tikz@lib@dec@te@characterprewidth}% + \tikz@lib@dec@te@addmacroto@parameters{\pgfmathcounter}{\tikz@lib@dec@te@characterpostwidth}% + \repeatpgfmathloop% +} + +% Get the options to applied to a character node. + +\def\tikz@lib@dec@te@addoptions#1{% + \expandafter\def\expandafter\tikz@lib@dec@te@options\expandafter{\tikz@lib@dec@te@options,#1}% +} + +\def\tikz@lib@dec@te@getoptions#1{% + \let\tikz@lib@dec@te@lastcharactercommand=\tikz@lib@dec@te@charactercommand% + \def\tikz@lib@dec@te@options{/pgf/decoration/text effects/.cd}% + \tikz@lib@dec@te@addoptions{#1}% + \let\tikzdecorationcharactercount=\tikz@lib@dec@te@charactercount% + \let\tikzdecorationcharactertotal=\tikz@lib@dec@te@charactertotalcount% + \let\tikzdecorationlettercount=\tikz@lib@dec@te@lettercount% + \let\tikzdecorationlettertotal=\tikz@lib@dec@te@lettertotalcount% + \let\tikzdecorationwordcount=\tikz@lib@dec@te@wordcount% + \let\tikzdecorationwordtotal=\tikz@lib@dec@te@wordtotal% + \let\tikzdecorationcharacter=\tikz@lib@dec@te@character% + % + % Define the count variables (if required) + \ifx\tikz@lib@dec@te@charactercountvar\pgfutil@empty% + \else% + \expandafter\let\tikz@lib@dec@te@charactercountvar=\tikz@lib@dec@te@charactercount% + \fi% + % + \ifx\tikz@lib@dec@te@charactertotalvar\pgfutil@empty% + \else% + \expandafter\let\tikz@lib@dec@te@charactertotalvar=\tikz@lib@dec@te@charactertotalcount% + \fi% + % + \ifx\tikz@lib@dec@te@wordcountvar\pgfutil@empty% + \else% + \expandafter\let\tikz@lib@dec@te@wordcountvar=\tikz@lib@dec@te@wordcount% + \fi% + % + \ifx\tikz@lib@dec@te@wordtotalvar\pgfutil@empty% + \else% + \expandafter\let\tikz@lib@dec@te@wordtotalvar=\tikz@lib@dec@te@wordtotal% + \fi% + % + \ifx\tikz@lib@dec@te@lettercountvar\pgfutil@empty% + \else% + \expandafter\let\tikz@lib@dec@te@lettercountvar=\tikz@lib@dec@te@lettercount% + \fi% + % + \ifx\tikz@lib@dec@te@lettertotalvar\pgfutil@empty% + \else% + \expandafter\let\tikz@lib@dec@te@lettertotalvar=\tikz@lib@dec@te@lettetotal% + \fi% + % + \edef\tikz@lib@dec@te@tmp{character \tikz@lib@dec@te@charactercount/.try,% + character {\meaning\tikz@lib@dec@te@character}/.try}% + \expandafter\tikz@lib@dec@te@addoptions\expandafter{\tikz@lib@dec@te@tmp}% + \ifx\tikz@lib@dec@te@character\tikz@lib@dec@te@wordsep% + \tikz@lib@dec@te@addoptions{/pgf/decoration/text effects/every word separator/.try}% + \else% + \ifnum\tikz@lib@dec@te@wordcount>0\relax% + \edef\tikz@lib@dec@te@tmp{every word/.try, word \tikz@lib@dec@te@wordcount/.try}% + \expandafter\tikz@lib@dec@te@addoptions\expandafter{\tikz@lib@dec@te@tmp}% + \ifnum\tikz@lib@dec@te@lettercount>0\relax% + \edef\tikz@lib@dec@te@tmp{every letter/.try,every \tikz@lib@dec@te@lettercount\space letter/.try}% + \expandafter\tikz@lib@dec@te@addoptions\expandafter{\tikz@lib@dec@te@tmp}% + \ifnum\tikz@lib@dec@te@lettercount=1\relax% + \edef\tikz@lib@dec@te@tmp{every first letter/.try}% + \expandafter\tikz@lib@dec@te@addoptions\expandafter{\tikz@lib@dec@te@tmp}% + \fi% + \iftikz@lib@dec@te@finalletter% + \tikz@lib@dec@te@addoptions{every final letter/.try}% + \fi% + \fi% + \fi% + \fi% +} + +% Called by `late positioning' of the node +% to get the width of the bounding box +% of a character. +\def\tikz@lib@dec@te@@getcharacterwidth{% + \iftikz@lib@dec@te@segmentfromwidth% + \pgf@x=\pgfpositionnodelatermaxx\relax% + \advance\pgf@x by-\pgfpositionnodelaterminx\relax% + \else% + \pgf@x=\pgfpositionnodelatermaxy\relax% + \advance\pgf@x by-\pgfpositionnodelaterminy\relax% + \fi% + \xdef\tikz@lib@dec@te@characterwidth@tmp{\the\pgf@x}% +} + + +\def\tikz@lib@dec@te@drawcharacter{% + \csname tikz@lib@dec@te@character@\tikz@lib@dec@te@charactercount\endcsname% + \tikz@lib@dec@te@getoptions{every character/.try}% + \pgfpositionnodelater\relax% + \pgfutil@ifundefined{tikz@lib@dec@te@character@replacements@\meaning\tikz@lib@dec@te@character @code}{% + \expandafter\node\expandafter[\tikz@lib@dec@te@options, scale=\tikz@lib@dec@scaledcharacterwidthfactor]{\hbox{\tikz@lib@dec@te@charactercommand{\tikz@lib@dec@te@character}}};% + }{\tikz@lib@dec@te@drawcharacter@replacement{\tikz@lib@dec@te@character}}% +} + +% Replace the character #1 with a character@replacement +% +\def\tikz@lib@dec@te@drawcharacter@replacement#1{% + \pgfscope% + \expandafter\tikzset\expandafter{\tikz@lib@dec@te@options}% + \csname tikz@lib@dec@te@character@replacements@\meaning#1@code\endcsname% + \endpgfscope% +} + +% Get the width of the character@replacement associated with +% the character #1 +% +\newbox\tikz@lib@dec@te@box +\def\tikz@lib@dec@te@getcharacter@replacementwidth#1{% + \pgfinterruptpicture% + \setbox\tikz@lib@dec@te@box=\hbox{% + \pgfpicture + \expandafter\tikzset\expandafter{\tikz@lib@dec@te@options}% + \csname tikz@lib@dec@te@character@replacements@\meaning#1@code\endcsname% + \endpgfpicture}% + \xdef\tikz@lib@dec@te@character@replacementwidth{\the\wd\tikz@lib@dec@te@box}% + \endpgfinterruptpicture% +} + +\def\tikz@lib@dec@scaledcharacterwidthfactor{1}% + +% Set up the decoration +\def\tikz@lib@dec@te@state@setup@precomputation{% + \def\tikz@lib@te@alignshift{0pt}% + \iftikz@lib@dec@te@pathfromtext% + % The width of the text and characters has already been calculated. + \else% + \let\tikz@lib@dec@te@text=\pgfdecorationtext% + % Get the chracter tokens and the total number of characters. + \tikz@lib@dec@te@preparetext% + \iftikz@lib@dec@te@scaletexttopath% + % OK, *scaling* text to path is easy. + % Simply divide the path length by the text width to + % obtain the scaling factor which will be applied + % "at the last minute"... + \pgfmathdivide{\pgfdecoratedpathlength}{\tikz@lib@dec@te@textwidth}% + \let\tikz@lib@dec@scaledcharacterwidthfactor=\pgfmathresult% + \expandafter\pgfkeys\expandafter{\tikz@lib@dec@te@tmp}% + % ... and recalulate the (pre and post) widths. + \pgfmathloop + \ifnum\pgfmathcounter>\tikz@lib@dec@te@charactertotalcount% + \else% + \pgf@x=\csname tikz@lib@dec@te@character@\pgfmathcounter @prewidth\endcsname\relax% + \pgf@x=\tikz@lib@dec@scaledcharacterwidthfactor\pgf@x% + \expandafter\edef\csname tikz@lib@dec@te@character@\pgfmathcounter @prewidth\endcsname{\the\pgf@x}% + % + \pgf@x=\csname tikz@lib@dec@te@character@\pgfmathcounter @postwidth\endcsname\relax% + \pgf@x=\tikz@lib@dec@scaledcharacterwidthfactor\pgf@x% + \expandafter\edef\csname tikz@lib@dec@te@character@\pgfmathcounter @postwidth\endcsname{\the\pgf@x}% + \repeatpgfmathloop% + % Update parameters with thewidths. + \tikz@lib@dec@te@addwidthstoparameters% + \let\tikz@lib@dec@te@textwidth=\pgfdecoratedpathlength% + \else% + \iftikz@lib@dec@te@fittexttopath% + % *Fitting* text is less easy. + % The pre and post width of all except the first and last characters + % must be recalculated. + % Only the post width of the first character and the pre width + % of the final character are scaled as these characters should be + % fixed and the start and end of the path, respectively. + % + % We hope that the decoration engine is accurate enough to position + % the last word correctly. + \pgf@x=\pgfdecoratedpathlength% + \pgf@xa=\csname tikz@lib@dec@te@character@1@postwidth\endcsname\relax% + \pgf@xb=\csname tikz@lib@dec@te@character@\tikz@lib@dec@te@charactertotalcount @prewidth\endcsname\relax% + \advance\pgf@x by-\pgf@xa% + \advance\pgf@x by-\pgf@xb% + \pgf@y=\tikz@lib@dec@te@textwidth\relax% + \advance\pgf@y by-\pgf@xa% + \advance\pgf@y by-\pgf@xb% + % + \pgfmathdivide{\the\pgf@x}{\the\pgf@y}% + \let\tikz@lib@dec@characterwidthscale=\pgfmathresult% + \pgfmathloop + \ifnum\pgfmathcounter>\tikz@lib@dec@te@charactertotalcount\relax% + \else% + \ifnum\pgfmathcounter>1\relax% + \pgf@x=\csname tikz@lib@dec@te@character@\pgfmathcounter @prewidth\endcsname\relax% + \pgf@x=\tikz@lib@dec@characterwidthscale\pgf@x% + \expandafter\edef\csname tikz@lib@dec@te@character@\pgfmathcounter @prewidth\endcsname{\the\pgf@x}% + \fi% + \ifnum\pgfmathcounter<\tikz@lib@dec@te@charactertotalcount\relax% + \pgf@x=\csname tikz@lib@dec@te@character@\pgfmathcounter @postwidth\endcsname\relax% + \pgf@x=\tikz@lib@dec@characterwidthscale\pgf@x% + \expandafter\edef\csname tikz@lib@dec@te@character@\pgfmathcounter @postwidth\endcsname{\the\pgf@x}% + \fi% + \repeatpgfmathloop% + % Update parameters with widths. + \tikz@lib@dec@te@addwidthstoparameters% + \let\tikz@lib@dec@te@textwidth=\pgfdecoratedpathlength% + \else% + % Calculate the distance to move along the path for alignment. + \pgfkeysgetvalue{/pgf/decoration/text align/align}{\tikz@lib@dec@align}% + \ifx\tikz@lib@dec@align\tikz@lib@dec@align@center@text% + \pgf@x=\pgfdecoratedpathlength\relax% + \advance\pgf@x by-\tikz@lib@dec@te@textwidth\relax% + \ifdim\pgf@x<0pt\relax% + \pgf@x=0pt\relax% + \fi% + \divide\pgf@x by2\relax% + % Adjust the pre-width of the first character... + \pgf@xa=\csname tikz@lib@dec@te@character@1@prewidth\endcsname\relax% + \advance\pgf@xa by\pgf@x% + \expandafter\edef\csname tikz@lib@dec@te@character@1@prewidth\endcsname{\the\pgf@xa}% + % ...and the post-width of the last character. + \pgf@xa=\csname tikz@lib@dec@te@character@\tikz@lib@dec@te@charactertotalcount @postwidth\endcsname\relax% + \advance\pgf@xa by\pgf@x% + \expandafter\edef\csname tikz@lib@dec@te@character@\tikz@lib@dec@te@charactertotalcount @postwidth\endcsname{\the\pgf@xa}% + \else% + \ifx\tikz@lib@dec@align\tikz@lib@dec@align@right@text% + \pgf@x=\pgfdecoratedpathlength\relax% + \advance\pgf@x by-\tikz@lib@dec@te@textwidth\relax% + \ifdim\pgf@x<0pt\relax% + \pgf@x=0pt\relax% + \fi% + % Adjust the pre-width of the first character... + \pgf@xa=\csname tikz@lib@dec@te@character@1@prewidth\endcsname\relax% + \advance\pgf@xa by\pgf@x% + \expandafter\edef\csname tikz@lib@dec@te@character@1@prewidth\endcsname{\the\pgf@xa}% + \fi% + \fi% + \tikz@lib@dec@te@addwidthstoparameters% + \fi% + \fi% + \fi% +} + + +% Evil hack into the decoration code. +% +% If the path contains single move to and the `path from text' +% key is set to true. The width of the text is calcuated here +% and the (straight line) path automatically calculated. +% +\def\pgf@decorate@path@check@moveto#1{% + \expandafter\pgf@decorate@path@@check@moveto#1\pgf@decorate@stop\pgf@decorate@@stop} + +\def\pgf@decorate@token@stop{\pgf@decorate@stop}% +\def\pgf@decorate@path@@check@moveto#1#2#3#4\pgf@decorate@@stop#5#6{% + \def\pgf@decorate@temp{#4}% + \pgf@x=#2\relax% + \pgf@y=#3\relax% + \ifx\pgf@decorate@temp\pgf@decorate@token@stop% + \iftikz@lib@dec@te@pathfromtext% + % Get the start position... + \pgfextract@process\tikz@lib@dec@te@pathstart{}% + \tikz@lib@dec@te@preparetext% + \tikz@lib@dec@te@addwidthstoparameters% + % ... and create a lineto path of the correct length. + \pgfsetpath\pgfutil@empty% + \pgfpathmoveto{\tikz@lib@dec@te@pathstart}% + \pgfpathlineto{\pgfpointadd{\tikz@lib@dec@te@pathstart}% + {\pgfpointpolar{\tikz@lib@dec@te@pathfromtextangle}{\tikz@lib@dec@te@textwidth}}}% + \pgfgetpath\pgfdecoratedpath% + \pgfsetpath\pgfutil@empty% + \else% + #5% + \fi% + \else% + \tikz@lib@dec@te@pathfromtextfalse% + #6% + \fi% +} + + +\pgfdeclaredecoration{text effects along path}{setup}{ + \state{setup}[width=+0pt, next state=scan, persistent precomputation={% + \tikz@lib@dec@te@state@setup@precomputation% + \def\tikz@lib@dec@te@charactercount{0}% + }]{} + % +\state{scan}[width=+0pt, next state=pre token, persistent precomputation={% + \tikz@lib@dec@te@advancecountmacro\tikz@lib@dec@te@charactercount{1}% + % Usual switch to final state is based on distance. + % Here we also need it to be on the number of the + % current character. + \ifnum\tikz@lib@dec@te@charactercount>\tikz@lib@dec@te@charactertotalcount\relax% + \ifnum\tikz@lib@dec@te@repeattext=0\relax% + \def\pgf@decorate@next@state{final}% + \else% + \tikz@lib@dec@te@advancecountmacro\tikz@lib@dec@te@repeattext{-1}% + \def\tikz@lib@dec@te@charactercount{1}% + \fi% + \fi% + % Install parameters for this character. + \csname tikz@lib@dec@te@character@\tikz@lib@dec@te@charactercount\endcsname% +}]{} +% +\state{pre token}[width=+\tikz@lib@dec@te@characterprewidth, next state=token]{} +\state{token}[width=+0pt, next state=post token] +{% + \tikz@lib@dec@te@drawcharacter% +} +\state{post token}[width=+\tikz@lib@dec@te@characterpostwidth, next state=scan]{} +} + + +% Parse styles for individual characters +% #1 a string of characters (e.g., aieou{\"U}{\"a"}) +% #2 the options for to apply to each character. +% +\def\tikz@lib@dec@te@parse@stylecharacters#1#2{% + \def\tikz@lib@dec@te@text{#1}% + \tikz@lib@dec@te@scancharacters{% + \pgfkeysalso{/pgf/decoration/text effects/character {\meaning\tikz@lib@dec@te@character}/.style={#2}}% + }% +} + +% Parse replacment code for for individual characters +% #1 a string of characters (e.g., aieou{\"U}{\"a"}) +% #2 the code to execute to each character. +% +\def\tikz@lib@dec@te@parse@replacecharacters#1#2{% + \def\tikz@lib@dec@te@text{#1}% + \tikz@lib@dec@te@scancharacters{% + \expandafter\def\csname tikz@lib@dec@te@character@replacements@\meaning\tikz@lib@dec@te@character @code\endcsname{#2}% + }% +} + \endinput |