How can I make default settings for pgf-pie and have different color for text on pies and outside of pies?

Question

I am using pgf-pie for simple pie-diagrams and would like to define a color scheme that is used by default for all charts. As it seems pgf-pie does not offer styles or color lists by default, hence I tried to solve this by defining a MYpie command that sets some standard options before applying specific settings. This works so far in my MWE:
documentclass{standalone}

usepackage{pgf-pie}

newcommand{MYpie}[2][]{pie[color={black,red,blue,orange},/tikz/draw=white,/tikz/text=white,#1]{#2}}

begin{document}
begin{tikzpicture}%[draw=white,text=white]
MYpie{10/A, 20/B, 30/C, 10/D, 10/E, 10/F, 10/G}
MYpie[pos={8,0}, square] {23/A, 27/B, 17/C, 13/D, 20/E}
MYpie[pos={2,-8}, cloud] {10/A, 20/B, 30/C, 20/D, 20/E}
end{tikzpicture}
end{document}

However there are two problems: The first is, that if I try to introduce the white text and drawing into my newcommand{MYpie}, like I do above, then I get the text white, but not the drawn lines, if I use the %[draw=white,text=white] instead, it works fine.
The second problem is: If my text is white, this applies to text on the pies and outside the pies, however this leads to invisible text outside the pies. So is it possible to select to different colors with pgf-pie?

muzimuzhi Z · Answer

The key-value scheme of pgf-pie is ... not very flexible nor robust. Hence I patch pie to let you use both pgfkeys{color=...} or pie[color=...] to specify color schemes and pie[/tikz/=] to specify tikz options with scope restricted to current pie. To achieve the desired effect, in the following example I use: nodes={white} to set node text in white, every label/.style={black} to restore the label text (the text outside the pies) from white to black, since label is a subtype of node, draw=white to set the line in white. documentclass{article} usepackage{pgf-pie} usepackage{xpatch} % remove hard-coded color wheel xpatchcmdpie {color={blue!60, cyan!60, yellow!60, orange!60, red!60, blue!60!cyan!60, cyan!60!yellow!60, red!60!cyan!60, red!60!blue!60, orange!60!cyan!60},} {} {}{fail} % restrict the scope of pie options xpretocmdpie{begingroup}{}{fail} xapptocmdpie{endgroup}{}{fail} makeatletter % set default color wheel defpgfpie@color{% blue!60, cyan!60, yellow!60, orange!60, red!60, blue!60!cyan!60, cyan!60!yellow!60, red!60!cyan!60, red!60!blue!60, orange!60!cyan!60} makeatother % set new color wheel pgfkeys{ color={black,red,blue,orange} } begin{document} tikzset{ % restricted by implementation, pie[style=...] accepts single key-value pair pie style/.style={thick, draw=white} } begin{tikzpicture}[every label/.style={black}, nodes={white}] pie[style={pie style}] {10/A, 20/B, 30/C, 10/D, 10/E, 10/F, 10/G} % test scope pie[ color={blue!60, cyan!60, yellow!60, orange!60}, /tikz/nodes={black}, pos={8,0}, square, style={pie style} ] {23/A, 27/B, 17/C, 13/D, 20/E} pie[pos={2,-8}, cloud, style={pie style}] {10/A, 20/B, 30/C, 20/D, 20/E} end{tikzpicture} end{document}

How can I make default settings for pgf-pie and have different color for text on pies and outside of pies?

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