Problems with uniqueMPgraphic

Problems with uniqueMPgraphic

[Adam Duck]

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I have this small test case:


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and it comes out with the wrong colors.  So, I think I know that this
is because of the same dimensions but I want to have different colors
for the same overlay-dimensions.  How do I do that?

bye, Adam.

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Re: Problems with uniqueMPgraphic

[Hans Hagen]

Adam Duck wrote:
> I have this small test case:
> 
> 
> 
> ------------------------------------------------------------------------
> 
> 
> and it comes out with the wrong colors.  So, I think I know that this
> is because of the same dimensions but I want to have different colors
> for the same overlay-dimensions.  How do I do that?

\setupcolors[state=start]

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------

Re: Problems with uniqueMPgraphic

[Hans Hagen]

Here is another approach

% small extension to underbar, accepts [settings]

\unprotected \def\underbarparameter#1{\getvalue{\??on#1}}

\unexpanded\def\dounderbar#1%
   {\let\betweenisolatedwords#1%
    \dosingleempty\redounderbar}

\unexpanded\def\redounderbar[#1]#2%
   {\iffirstargument\setupunderbar[#1]\fi
    \processisolatedwords{#2}\dodounderbar
    \egroup}

% roughly the same

\startuniqueMPgraphic{underline}{color,width,height,depth}
    numeric w,h; w := \MPvar{width} ; h := \MPvar{height} ; d := \MPvar{depth} ;
    path p; p := (0, -h)..(w/2,0 + (h/3 randomized h/3))..(w, -h);
    p := p shifted (0,-d) ;
    draw p withpen pencircle scaled 1 withcolor \MPvar{color} ;
    setbounds currentpicture to unitsquare xyscaled 
(OverlayWidth,OverlayHeight); \stopuniqueMPgraphic

hook into underbar:

\unprotect

\def\underbarmethodx#1#2#3% mp
   {\hbox to #1{\uniqueMPgraphic
 
{underline}{width=#1,height=#2,depth=\underbarparameter\c!bottomoffset,color=\underbarparameter\c!color}}}

\protect

% usage:

\setupunderbar[alternative=x,bottomoffset=1ex,color=red]

\startitemize
\item test: \underbars[color=blue]{how are you?}
\item test: \underbars{how are you?}
\item test: \underbars{how are you?}
\stopitemize

\stoptext

in your case, in order to make the graphic unique, you need to pass the second 
arg in order to make them unique (uniqueness is determined by dimensions and a 
few more things; another option would be to use the backgroundcolor of inframed 
which is accessible by \OverlayColor and also determines uniqueness

\startuniqueMPgraphic{underline}{color}

alternative

\startuniqueMPgraphic{underline}
    numeric w,h; w := OverlayWidth; h := ExHeight/6;
    path p; p := (0, -h)..(w/2,0 + (h/3 randomized h/3))..(w, -h);
    draw p withpen pencircle scaled 1 withcolor OverlayColor ;
    setbounds currentpicture to unitsquare xyscaled 
(OverlayWidth,OverlayHeight); \stopuniqueMPgraphic

\defineoverlay[underline][\uniqueMPgraphic{underline}]

\def\aidul{\dosingleempty\doaidul}
\def\doaidul[#1]{\inframed[background=underline,frame=off,#1]}

\setupcolors[state=start]

\startitemize
\item test: \aidul[backgroundcolor=red]{how} \aidul[color=green]{are} 
\aidul[color=blue]{you?}
\item test:\aidul[backgroundcolor=blue]{how} \aidul[color=green]{how} 
\aidul[color=red]{how}
\stopitemize


Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------

Re: Problems with uniqueMPgraphic

[Adam Duck]

Hans Hagen <pragma@wxs.nl> writes:

[... stuff I didn't understand ...]

> alternative
>
> \startuniqueMPgraphic{underline}
>    numeric w,h; w := OverlayWidth; h := ExHeight/6;
>    path p; p := (0, -h)..(w/2,0 + (h/3 randomized h/3))..(w, -h);
>    draw p withpen pencircle scaled 1 withcolor OverlayColor ;
>    setbounds currentpicture to unitsquare xyscaled 
> (OverlayWidth,OverlayHeight); \stopuniqueMPgraphic
>
> \defineoverlay[underline][\uniqueMPgraphic{underline}]
>
> \def\aidul{\dosingleempty\doaidul}
> \def\doaidul[#1]{\inframed[background=underline,frame=off,#1]}
>
> \setupcolors[state=start]

Thanks for the fast response and the many lines you've written
(although I didn't understand everything).  The OverlayColor works
fine and as underlining is in the background, I'll take this aproach.

So, one last question remains: why doesn't this work?

\def\uli{backgroundcolor=peachpuff} \aidul[\uli]{test}

bye, Adam.

Re: Problems with uniqueMPgraphic

[h h extern]

Adam Duck wrote:

>>\def\aidul{\dosingleempty\doaidul}
>>\def\doaidul[#1]{\inframed[background=underline,frame=off,#1]}

> So, one last question remains: why doesn't this work?
> 
> \def\uli{backgroundcolor=peachpuff} \aidul[\uli]{test}

parsing ....

\def\doaidul[#1]{\expanded{\inframed[background=underline,frame=off,#1]}}

would work

however, in that case i'd go for:

\def\doaidul[#1]{\inframed[background=underline,frame=off,backgroundcolor=#1]}

\definecolor[important][red]
\definecolor[notimportant][green]

and \aidul[important]{test} as well as \aidul[notimportant]{test} since one can 
redefine the colors

Hans


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------