On 07/12/2016 10:03 PM, Hans Hagen wrote:
On 7/12/2016 9:39 PM, Henri Menke wrote:
Dear Aditya and Hans,
I'm not so sure about it being a bug in pgfplots. I played a little and encountered the following.
As Aditya pointed out, these (probably used for tracing) colors are defined in such a way that they don't go via the context resolver. As these (few) colors are basically x windows colors, you can start your document with:
\usecolors[xwi]
which will set the context colors differently.
Adding \usecolors[xwi] to the example does not change anything. Looking at base/colo-imp-xwi.mkiv revealed, that it does not alter the way colors are defined, but just defines a huge bunch of additional ones.
\usemodule[tikz] \starttext
% Original gray \blackrule[color=gray,width=1cm,height=1pt]
\starttikzpicture \draw[gray,line width=1pt] (0,0) -- (1,0); \stoptikzpicture
% New colors \definecolor[gray][s=0.5] \unprotect \pgfutil@definecolor{tikzgray}{gray}{0.5} \protect
% Now ConTeXt's gray = tikzgray \blackrule[color=gray,width=1cm,height=1pt]
How is that supposed to work? Context will not inherit colors from tikz, the most you can expect is the reverse: tikz using context color definitions.
I'm very sorry for the confusion. What I did was to adjust ConTeXt's gray to have the same grayscale value as the tikzgray. As is shown below, the redefinition of gray does not propagate to TikZ.
\starttikzpicture \draw[tikzgray,line width=1pt] (0,0) -- (1,0); \stoptikzpicture
% Inside TikZ gray is still off \starttikzpicture \draw[gray,line width=1pt] (0,0) -- (1,0); \stoptikzpicture
\stoptext
In pgfutil-context.def there is though \let\pgfutil@registergray \pgf@context@registergray So it seems as if gray *should* be propagated from ConTeXt to TikZ, which apparently takes place when loading TikZ. Moving \definecolor[gray][s=0.5] before \usemodule[tikz] shows this behavior. The question is how to keep colors from ConTeXt and TikZ in sync. Cheers, Henri
Cheers, Henri
On 07/12/2016 08:23 PM, Aditya Mahajan wrote:
On Tue, 12 Jul 2016, Hans Hagen wrote:
On 7/12/2016 5:07 PM, Aditya Mahajan wrote:
On Tue, 12 Jul 2016, Hans Hagen wrote:
On 7/12/2016 3:44 PM, Henri Menke wrote: > Dear Hans, > > thanks for your reply. Indeed there are color definitions in > `pgfutil-context.def`. However, they are commented out with the message > >> % no need for x colors (users can load it if needed) >> ... >> %\pgfutil@definecolor{gray}{gray}{0.5} > > If I add > >> \csname pgfutil@definecolor\endcsname{gray}{gray}{0.5} > > to my document the gray shows up fine. So that's for sure a > feasible > workaround. > > Can you comment on the phrase »no need for x colors (users can > load it > if needed)«? I'm not quite sure what it means and it suggests that > there exists a proper solution to my color problem.
normally you want the same colors in tikz images as in context so then defining them in tikz is creating incompatibilities (your case is the reverse and a-typical)
However, without such redefinitions, tikz does not understand ConTeXt colors. I use a similar workaround in my documents as well.
I have no clue what you mean.
\definecolor[red][g=1]
\startTEXpage \starttikzpicture \fill[red] (0,0) circle (1cm); \stoptikzpicture \stopTEXpage
works ok here and gives green. So, one can collect a list of colors defined in tikz in a colo-imp-tikz.mkiv and load that one if needed.
I guess it is a bug with pgfplots rather than tikz (which also means that it may be easier to pursuade pgfplot maintainers to use low level tikz interface, since tikz is already playing nice with context).
\usemodule[tikz,pgfplots] \definecolor[red][g=1]
\startmode[bug] \unprotect \pgfutil@definecolor{red} {rgb} {0,1,0} \protect \stopmode
\starttext \startTEXpage \starttikzpicture \startaxis \addplot[color=red] coordinates { (0,0) (1,1) }; \stopaxis \stoptikzpicture \stopTEXpage \stoptext
Aditya
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