[NTG-context] Fwd: Re: how to apply gradient color to a piece of text?

[NTG-context] Fwd: Re: how to apply gradient color to a piece of text?

[Hans Hagen]

-------- Forwarded Message --------
Subject: Re: [NTG-context] Re: how to apply gradient color to a piece of 
text?
Date: Sun, 7 Apr 2024 19:05:13 +0200
From: Hans Hagen <j.hagen@xs4all.nl>
To: Keith McKay <mckaymeister@gmail.com>

On 4/7/2024 6:56 PM, Keith McKay wrote:
> Not for me either. I used it somewhere so I'll need to look back in my 
> files.

\startMPpage
     picture tt ; tt := lmt_outline [
         kind = "fillup",
         text = "\definedfont[name:texgyrepagellabold*default]foo f o o",
     ] xsized 12cm ;

     path bb ; bb := boundingbox tt ;
     path pp ; pp := bb enlarged 2cm ;

     fill pp
         withshademethod "linear"
         withshadedirection down
         withshadecolors (red, blue) ;

     draw tt withcolor green ;
\stopMPpage

no need to loop over tt



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

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: Fwd: Re: how to apply gradient color to a piece of text?

[Henning Hraban Ramm]

Am 07.04.24 um 19:05 schrieb Hans Hagen:
> \startMPpage
>      picture tt ; tt := lmt_outline [
>          kind = "fillup",
>          text = "\definedfont[name:texgyrepagellabold*default]foo f o o",
>      ] xsized 12cm ;
> 
>      path bb ; bb := boundingbox tt ;
>      path pp ; pp := bb enlarged 2cm ;
> 
>      fill pp
>          withshademethod "linear"
>          withshadedirection down
>          withshadecolors (red, blue) ;
> 
>      draw tt withcolor green ;
> \stopMPpage
> 
> no need to loop over tt

But the intention was to get a gradient _within_ the text.

Might there be a problem with the latest changes to gradients?

Hraban

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: Fwd: Re: how to apply gradient color to a piece of text?

[Keith McKay]

I've found my original file and the image is as Hraban says below. The 
code is the original in the post I quoted  and gives a green background 
with shaded colours in the text.

Best Wishes

Keith

On 07/04/2024 18:42, Henning Hraban Ramm wrote:
> Am 07.04.24 um 19:05 schrieb Hans Hagen:
>> \startMPpage
>>      picture tt ; tt := lmt_outline [
>>          kind = "fillup",
>>          text = "\definedfont[name:texgyrepagellabold*default]foo f o 
>> o",
>>      ] xsized 12cm ;
>>
>>      path bb ; bb := boundingbox tt ;
>>      path pp ; pp := bb enlarged 2cm ;
>>
>>      fill pp
>>          withshademethod "linear"
>>          withshadedirection down
>>          withshadecolors (red, blue) ;
>>
>>      draw tt withcolor green ;
>> \stopMPpage
>>
>> no need to loop over tt
>
> But the intention was to get a gradient _within_ the text.
>
> Might there be a problem with the latest changes to gradients?
>
> Hraban
>
> ___________________________________________________________________________________ 
>
> If your question is of interest to others as well, please add an entry 
> to the Wiki!
>
> maillist : ntg-context@ntg.nl / 
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net 
> (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________ 
>
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: Fwd: Re: how to apply gradient color to a piece of text?

[Hans Hagen]

On 4/7/2024 7:42 PM, Henning Hraban Ramm wrote:
> Am 07.04.24 um 19:05 schrieb Hans Hagen:
>> \startMPpage
>>      picture tt ; tt := lmt_outline [
>>          kind = "fillup",
>>          text = "\definedfont[name:texgyrepagellabold*default]foo f o o",
>>      ] xsized 12cm ;
>>
>>      path bb ; bb := boundingbox tt ;
>>      path pp ; pp := bb enlarged 2cm ;
>>
>>      fill pp
>>          withshademethod "linear"
>>          withshadedirection down
>>          withshadecolors (red, blue) ;
>>
>>      draw tt withcolor green ;
>> \stopMPpage
>>
>> no need to loop over tt
> 
> But the intention was to get a gradient _within_ the text.
> 
> Might there be a problem with the latest changes to gradients?
\startMPpage
      picture tt ; tt := lmt_outline [
          kind = "path",
          text = "\definedfont[name:texgyrepagellabold*default]foo f o o",
      ] ;

      fill
         for i within tt : pathpart i && endfor cycle
         withshademethod "linear"
         withshadedirection down
         withshadecolors (red, blue) ;
\stopMPpage

I'll add this:

\startMPpage
     draw lmt_outline [
         kind = "outline",
         text = "\definedfont[name:texgyrepagellabold*default]foo f o o",
     ]
         withshademethod "linear"
         withshadedirection down
         withshadecolors (red, blue)
     ;
\stopMPpage

so a single path option (no picture)

Hans


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

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: Fwd: Re: how to apply gradient color to a piece of text?

[seyal zavira]

[-- Attachment #1.1: Type: text/plain, Size: 968 bytes --]

thank you Harban and Keith McKay.

\startMPpage
>       picture tt ; tt := lmt_outline [
>           kind = "path",
>           text = "\definedfont[name:texgyrepagellabold*default]foo f o o",
>       ] ;
>
>       fill
>          for i within tt : pathpart i && endfor cycle
>          withshademethod "linear"
>          withshadedirection down
>          withshadecolors (red, blue) ;
> \stopMPpage
>
> I'll add this:
>
> \startMPpage
>      draw lmt_outline [
>          kind = "outline",
>          text = "\definedfont[name:texgyrepagellabold*default]foo f o o",
>      ]
>          withshademethod "linear"
>          withshadedirection down
>          withshadecolors (red, blue)
>      ;
> \stopMPpage
>
> so a single path option (no picture)
>
> Hans
>

Thank you so much for the sample examples
it would be great to also make text select able in output pdf
the third example currently does not work. did you mean you will add this
feature for next updates?

[-- Attachment #1.2: Type: text/html, Size: 1620 bytes --]

[-- Attachment #2: Type: text/plain, Size: 511 bytes --]

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: Fwd: Re: how to apply gradient color to a piece of text?

[Hans Hagen]

On 4/8/2024 8:22 AM, seyal zavira wrote:
> thank you Harban and Keith McKay.
> 
>     \startMPpage
>            picture tt ; tt := lmt_outline [
>                kind = "path",
>                text = "\definedfont[name:texgyrepagellabold*default]foo
>     f o o",
>            ] ;
> 
>            fill
>               for i within tt : pathpart i && endfor cycle
>               withshademethod "linear"
>               withshadedirection down
>               withshadecolors (red, blue) ;
>     \stopMPpage
> 
>     I'll add this:
> 
>     \startMPpage
>           draw lmt_outline [
>               kind = "outline",
>               text = "\definedfont[name:texgyrepagellabold*default]foo f
>     o o",
>           ]
>               withshademethod "linear"
>               withshadedirection down
>               withshadecolors (red, blue)
>           ;
>     \stopMPpage
> 
>     so a single path option (no picture)
> 
>     Hans
> 
> 
> Thank you so much for the sample examples
> it would be great to also make text select able in output pdf
> the third example currently does not work. did you mean you will add 
> this feature for next updates?
we're talking outlines so that is paths which implies no search but you 
can do this (Keith and/or Hraban will explain and/or wikify it)

\starttext

\startbuffer[MyText]
     \definedfont[name:texgyrepagellabold*default]foo f o o%
\stopbuffer

\startbuffer[MyText]
     \framed[align=normal,frame=off]{\input{tufte}}%
\stopbuffer

\setbox\scratchbox\hbox\bgroup
     \startMPcode
          draw lmt_outline [
              kind = "outline",
              text = "\getbuffer[MyText]",
          ]
              withshademethod "linear"
              withshadedirection down
              withshadecolors (red, blue)
          ;
     \stopMPcode
\egroup

\startoverlay
 
{\scale[height=\htdp\scratchbox,width=\wd\scratchbox]{\effect[hidden]{\getbuffer[MyText]}}}
     {\box\scratchbox}
\stopoverlay

\stoptext




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

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: Fwd: Re: how to apply gradient color to a piece of text?

[seyal zavira]

[-- Attachment #1.1: Type: text/plain, Size: 3782 bytes --]

seams this code means to put a hidden text with same size behind metapost
shape.
but it does not work properly for me (current version: 2024.04.01 08:59)
and produce empty page but with searchable hidden text.
also when i edit the code and replace metapost part like this:

\startMPcode
     draw lmt_outline [
         kind = "outline",
         text = "\getbuffer[MyText]",
      ]
         withcolor red
      ;
\stopMPcode

it produces a selectable hidden text on top of body and red text that drawn
by metapost below of that.

How can this problem be solved?

i attached the codes and pdf results.

On Mon, Apr 8, 2024 at 4:37 AM Hans Hagen <j.hagen@xs4all.nl> wrote:

> On 4/8/2024 8:22 AM, seyal zavira wrote:
> > thank you Harban and Keith McKay.
> >
> >     \startMPpage
> >            picture tt ; tt := lmt_outline [
> >                kind = "path",
> >                text = "\definedfont[name:texgyrepagellabold*default]foo
> >     f o o",
> >            ] ;
> >
> >            fill
> >               for i within tt : pathpart i && endfor cycle
> >               withshademethod "linear"
> >               withshadedirection down
> >               withshadecolors (red, blue) ;
> >     \stopMPpage
> >
> >     I'll add this:
> >
> >     \startMPpage
> >           draw lmt_outline [
> >               kind = "outline",
> >               text = "\definedfont[name:texgyrepagellabold*default]foo f
> >     o o",
> >           ]
> >               withshademethod "linear"
> >               withshadedirection down
> >               withshadecolors (red, blue)
> >           ;
> >     \stopMPpage
> >
> >     so a single path option (no picture)
> >
> >     Hans
> >
> >
> > Thank you so much for the sample examples
> > it would be great to also make text select able in output pdf
> > the third example currently does not work. did you mean you will add
> > this feature for next updates?
> we're talking outlines so that is paths which implies no search but you
> can do this (Keith and/or Hraban will explain and/or wikify it)
>
> \starttext
>
> \startbuffer[MyText]
>      \definedfont[name:texgyrepagellabold*default]foo f o o%
> \stopbuffer
>
> \startbuffer[MyText]
>      \framed[align=normal,frame=off]{\input{tufte}}%
> \stopbuffer
>
> \setbox\scratchbox\hbox\bgroup
>      \startMPcode
>           draw lmt_outline [
>               kind = "outline",
>               text = "\getbuffer[MyText]",
>           ]
>               withshademethod "linear"
>               withshadedirection down
>               withshadecolors (red, blue)
>           ;
>      \stopMPcode
> \egroup
>
> \startoverlay
>
>
> {\scale[height=\htdp\scratchbox,width=\wd\scratchbox]{\effect[hidden]{\getbuffer[MyText]}}}
>      {\box\scratchbox}
> \stopoverlay
>
> \stoptext
>
>
>
>
> -----------------------------------------------------------------
>                                            Hans Hagen | PRAGMA ADE
>                Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>         tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
>
>
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
>
> ___________________________________________________________________________________
>

[-- Attachment #1.2: Type: text/html, Size: 5722 bytes --]

[-- Attachment #2: test1.tex --]
[-- Type: text/x-tex, Size: 670 bytes --]

\starttext

\startbuffer[MyText]
     \definedfont[name:texgyrepagellabold*default]foo f o o%
\stopbuffer

\startbuffer[MyText]
     \framed[align=normal,frame=off]{a sample text}%
\stopbuffer

\setbox\scratchbox\hbox\bgroup
     \startMPcode
          draw lmt_outline [
              kind = "outline",
              text = "\getbuffer[MyText]",
          ]
              withshademethod "linear"
              withshadedirection down
              withshadecolors (red, blue)
          ;
     \stopMPcode
\egroup

\startoverlay

{\scale[height=\htdp\scratchbox,width=\wd\scratchbox]{\effect[hidden]{\getbuffer[MyText]}}}
     {\box\scratchbox}
\stopoverlay

\stoptext

[-- Attachment #3: test1.pdf --]
[-- Type: application/pdf, Size: 6106 bytes --]

[-- Attachment #4: test2.tex --]
[-- Type: text/x-tex, Size: 580 bytes --]

\starttext

\startbuffer[MyText]
     \definedfont[name:texgyrepagellabold*default]foo f o o%
\stopbuffer

\startbuffer[MyText]
     \framed[align=normal,frame=off]{a sample text}%
\stopbuffer

\setbox\scratchbox\hbox\bgroup
     \startMPcode
          draw lmt_outline [
              kind = "outline",
              text = "\getbuffer[MyText]",
          ]
              withcolor red;
          ;
     \stopMPcode
\egroup

\startoverlay

{\scale[height=\htdp\scratchbox,width=\wd\scratchbox]{\effect[hidden]{\getbuffer[MyText]}}}
     {\box\scratchbox}
\stopoverlay

\stoptext

[-- Attachment #5: test2.pdf --]
[-- Type: application/pdf, Size: 10025 bytes --]

[-- Attachment #6: Type: text/plain, Size: 511 bytes --]

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________

[NTG-context] Re: Fwd: Re: how to apply gradient color to a piece of text?

[Hans Hagen]

On 4/10/2024 5:22 AM, seyal zavira wrote:
> seams this code means to put a hidden text with same size behind 
> metapost shape.
> but it does not work properly for me (current version: 2024.04.01 08:59) 
> and produce empty page but with searchable hidden text.

as mentioned kind = "outline" will be in the next upload so with the 
current one you need to use the also posted here for ... endfor variant

> also when i edit the code and replace metapost part like this:
> 
> \startMPcode
>       draw lmt_outline [
>           kind = "outline",
>           text = "\getbuffer[MyText]",
>        ]
>           withcolor red
>        ;
> \stopMPcode
> 
> it produces a selectable hidden text on top of body and red text that 
> drawn by metapost below of that.
> 
> How can this problem be solved?
> 
> i attached the codes and pdf results.
> 
> On Mon, Apr 8, 2024 at 4:37 AM Hans Hagen <j.hagen@xs4all.nl 
> <mailto:j.hagen@xs4all.nl>> wrote:
> 
>     On 4/8/2024 8:22 AM, seyal zavira wrote:
>      > thank you Harban and Keith McKay.
>      >
>      >     \startMPpage
>      >            picture tt ; tt := lmt_outline [
>      >                kind = "path",
>      >                text =
>     "\definedfont[name:texgyrepagellabold*default]foo
>      >     f o o",
>      >            ] ;
>      >
>      >            fill
>      >               for i within tt : pathpart i && endfor cycle
>      >               withshademethod "linear"
>      >               withshadedirection down
>      >               withshadecolors (red, blue) ;
>      >     \stopMPpage
>      >
>      >     I'll add this:
>      >
>      >     \startMPpage
>      >           draw lmt_outline [
>      >               kind = "outline",
>      >               text =
>     "\definedfont[name:texgyrepagellabold*default]foo f
>      >     o o",
>      >           ]
>      >               withshademethod "linear"
>      >               withshadedirection down
>      >               withshadecolors (red, blue)
>      >           ;
>      >     \stopMPpage
>      >
>      >     so a single path option (no picture)
>      >
>      >     Hans
>      >
>      >
>      > Thank you so much for the sample examples
>      > it would be great to also make text select able in output pdf
>      > the third example currently does not work. did you mean you will add
>      > this feature for next updates?
>     we're talking outlines so that is paths which implies no search but you
>     can do this (Keith and/or Hraban will explain and/or wikify it)
> 
>     \starttext
> 
>     \startbuffer[MyText]
>           \definedfont[name:texgyrepagellabold*default]foo f o o%
>     \stopbuffer
> 
>     \startbuffer[MyText]
>           \framed[align=normal,frame=off]{\input{tufte}}%
>     \stopbuffer
> 
>     \setbox\scratchbox\hbox\bgroup
>           \startMPcode
>                draw lmt_outline [
>                    kind = "outline",
>                    text = "\getbuffer[MyText]",
>                ]
>                    withshademethod "linear"
>                    withshadedirection down
>                    withshadecolors (red, blue)
>                ;
>           \stopMPcode
>     \egroup
> 
>     \startoverlay
> 
>     {\scale[height=\htdp\scratchbox,width=\wd\scratchbox]{\effect[hidden]{\getbuffer[MyText]}}}
>           {\box\scratchbox}
>     \stopoverlay
> 
>     \stoptext
> 
> 
> 
> 
>     -----------------------------------------------------------------
>                                                 Hans Hagen | PRAGMA ADE
>                     Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>              tel: 038 477 53 69 | www.pragma-ade.nl
>     <http://www.pragma-ade.nl> | www.pragma-pod.nl
>     <http://www.pragma-pod.nl>
>     -----------------------------------------------------------------
> 
>     ___________________________________________________________________________________
>     If your question is of interest to others as well, please add an
>     entry to the Wiki!
> 
>     maillist : ntg-context@ntg.nl <mailto:ntg-context@ntg.nl> /
>     https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
>     <https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl>
>     webpage  : https://www.pragma-ade.nl <https://www.pragma-ade.nl> /
>     https://context.aanhet.net <https://context.aanhet.net> (mirror)
>     archive  : https://github.com/contextgarden/context
>     <https://github.com/contextgarden/context>
>     wiki     : https://wiki.contextgarden.net
>     <https://wiki.contextgarden.net>
>     ___________________________________________________________________________________
> 
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive  : https://github.com/contextgarden/context
> wiki     : https://wiki.contextgarden.net
> ___________________________________________________________________________________

-- 

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

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________