On Aug 17, 2016, at 5:45 PM, Hans Hagen wrote:

On 8/17/2016 9:56 PM, Brian R. Landy wrote:

...

Hi, I was wondering if there is a way to call \getscaledglyph to scale a glyph only horizontally, leaving the height untouched? Or maybe an alternate command?

I can sort of accomplish this with (for example) \scale[sx=0.75,sy=1.0]{}{A}, but that encloses the glyph in an \hbox, which can be problematic. \getscaledglyph doesn't cause me any problems, except that it scales the height too.

\starttext

\definefontfeature[whatever][default][extend=2.5]

\definedfont[Serif*whatever at 12pt]

whatever

\stoptext

Thank you. One thing that \getscaledglyph does it works agnostic to the currently selected font. For example: \starttext % This will print a sans “A” 1.5x larger than 12pt \switchtobodyfont[12pt,sans] \getscaledglyph{1.5}{}{A}\par % This will print a serif “A” 1.5x larger than 10pt \switchtobodyfont[10pt,serif] \getscaledglyph{1.5}{}{A}\par \stoptext I’m guessing there isn’t a way to use \definedfont in a similar fashion? Also, I noticed that \definedfont doesn’t seem to play nicely with \switchtobodyfont: \starttext \definefontfeature[whatever][default][extend=2.5] % This looks ok \switchtobodyfont[12pt,serif] {\definedfont[Serif*whatever at 12pt] what}ever\par % the “ever” is not printed properly, it overlaps itself \switchtobodyfont[10pt,serif] {\definedfont[Serif*whatever at 10pt] what}ever\par \stoptext Best, Brian

On Thu, 18 Aug 2016, Hans Hagen wrote:

On 8/18/2016 1:12 AM, Brian R. Landy wrote:

...

...

On Aug 17, 2016, at 5:45 PM, Hans Hagen wrote:

On 8/17/2016 9:56 PM, Brian R. Landy wrote:

...

Hi, I was wondering if there is a way to call \getscaledglyph to scale a glyph only horizontally, leaving the height untouched? Or maybe an alternate command?

I can sort of accomplish this with (for example) \scale[sx=0.75,sy=1.0]{}{A}, but that encloses the glyph in an \hbox, which can be problematic. \getscaledglyph doesn't cause me any problems, except that it scales the height too.

\starttext

\definefontfeature[whatever][default][extend=2.5]

\definedfont[Serif*whatever at 12pt]

whatever

\stoptext

Thank you. One thing that \getscaledglyph does it works agnostic to the currently selected font. For example:

scaling glyphs in one direction is kind of bad anyway so if you want just one glyph you can do

\inframed{\scale[width=3em,height=1ex]{...}}

or whatever suits the purpose

Agreed. Here's a little more background, so it makes some sense why I want to scale horizontally, and then I describe my final solution. I have a specific case where I use a minus, a hyphen-minus, and a plus close to each other, and it's always bugged me that most fonts don't vertically align the hyphen-minus with the other two glyphs. An example is: {\normalUchar"2212}100-00+ I was thinking that math fonts did align these symbols, hence my question on Monday on how to get the hyphen-minus in math mode (and thanks for the quick answer on that) but unfortunately was wrong. So that got me searching for a way to horizontally shrink a minus, so it would retain the same height and line thickness as the minus. Horizontal-only scaling of a hyphen/dash/minus isn't so bad. \scaled[] worked perfectly, but it breaks inside a natural table with character alignment enabled. I have a commented example of this below. \getscaledglyph works in the table, but the vertical shrink is a non-starter. Here's an example: \edef\mathminus{\normalUchar"2212} \edef\smallminus{\getscaledglyph{0.33}{}{\normalUchar"2212}} \starttext This is my starting point: \bTABLE[aligncharacter=yes,alignmentcharacter={text->-}] \bTR \bTD \mathminus100-00+ \eTD \eTR \bTR \bTD 100-00 \eTD \eTR \bTR \bTD \mathminus 99-00+ \eTD \eTR \bTR \bTD \mathminus 99-00 \eTD \eTR \eTABLE % This table won't typeset: % % \bTABLE[aligncharacter=yes,alignmentcharacter={text->:}] % \bTR \bTD \mathminus100\scaled[sx=0.5,sy=1.0]{\mathminus}00:+ \eTD \eTR % \bTR \bTD 100\scaled[sx=0.5,sy=1.0]{\mathminus}00: \eTD \eTR % \bTR \bTD \mathminus 99\scaled[sx=0.5,sy=1.0]{\mathminus}00:+ \eTD \eTR % \bTR \bTD \mathminus 99\scaled[sx=0.5,sy=1.0]{\mathminus}00: \eTD \eTR % \eTABLE \stoptext But I came up with a solution that works. Rather than attempt to shrink the minus glyph, I define a new glyph that corrects the height of the hyphen-minus: \startluacode local function addsmallminus(tfmdata) local hchar = tfmdata.characters[0x002D] local mchar = tfmdata.characters[0x2212] tfmdata.characters[0xFE000] = { width = hchar.width, height = mchar.height, commands = { { "down", hchar.height-mchar.height }, { "char", 0x002D }, } } end fonts.constructors.newfeatures("otf").register { name = "smallminus", description = "small minus", manipulators = { base = addsmallminus, node = addsmallminus, } } \stopluacode \definefontfeature[default][default][smallminus=yes] \edef\smallminus{\normalUchar"FE000} \starttext \bTABLE[aligncharacter=yes,alignmentcharacter={text->\smallminus}] \bTR \bTD \mathminus100\smallminus00+ \eTD \eTR \bTR \bTD 100\smallminus00 \eTD \eTR \bTR \bTD \mathminus 99\smallminus00+ \eTD \eTR \bTR \bTD \mathminus 99\smallminus00 \eTD \eTR \eTABLE \stoptext So this looks good and works with any font. The only issue is fonts that use a different line thickness for the minus and hyphen-minus; this top-aligns the glyphs. Is there a way to make this glyph available in math-mode? I get a "?" when I try: \math{\smallminus} \math{\mathchar"FE000} Thanks for all your help! Brian

On 8/18/2016 6:30 PM, Brian R. Landy wrote:

On Thu, 18 Aug 2016, Hans Hagen wrote:

...

On 8/18/2016 1:12 AM, Brian R. Landy wrote:

...

...

On Aug 17, 2016, at 5:45 PM, Hans Hagen wrote:

On 8/17/2016 9:56 PM, Brian R. Landy wrote:

...

Hi, I was wondering if there is a way to call \getscaledglyph to scale a glyph only horizontally, leaving the height untouched? Or maybe an alternate command?

I can sort of accomplish this with (for example) \scale[sx=0.75,sy=1.0]{}{A}, but that encloses the glyph in an \hbox, which can be problematic. \getscaledglyph doesn't cause me any problems, except that it scales the height too.

\starttext

\definefontfeature[whatever][default][extend=2.5]

\definedfont[Serif*whatever at 12pt]

whatever

\stoptext

Thank you. One thing that \getscaledglyph does it works agnostic to the currently selected font. For example:

scaling glyphs in one direction is kind of bad anyway so if you want just one glyph you can do

\inframed{\scale[width=3em,height=1ex]{...}}

or whatever suits the purpose

Agreed. Here's a little more background, so it makes some sense why I want to scale horizontally, and then I describe my final solution. I have a specific case where I use a minus, a hyphen-minus, and a plus close to each other, and it's always bugged me that most fonts don't vertically align the hyphen-minus with the other two glyphs. An example is:

{\normalUchar"2212}100-00+

I was thinking that math fonts did align these symbols, hence my question on Monday on how to get the hyphen-minus in math mode (and thanks for the quick answer on that) but unfortunately was wrong. So that got me searching for a way to horizontally shrink a minus, so it would retain the same height and line thickness as the minus. Horizontal-only scaling of a hyphen/dash/minus isn't so bad.

\scaled[] worked perfectly, but it breaks inside a natural table with character alignment enabled. I have a commented example of this below. \getscaledglyph works in the table, but the vertical shrink is a non-starter.

Here's an example:

\edef\mathminus{\normalUchar"2212} \edef\smallminus{\getscaledglyph{0.33}{}{\normalUchar"2212}} \starttext

This is my starting point:

\bTABLE[aligncharacter=yes,alignmentcharacter={text->-}] \bTR \bTD \mathminus100-00+ \eTD \eTR \bTR \bTD 100-00 \eTD \eTR \bTR \bTD \mathminus 99-00+ \eTD \eTR \bTR \bTD \mathminus 99-00 \eTD \eTR \eTABLE

% This table won't typeset: % % \bTABLE[aligncharacter=yes,alignmentcharacter={text->:}] % \bTR \bTD \mathminus100\scaled[sx=0.5,sy=1.0]{\mathminus}00:+ \eTD \eTR % \bTR \bTD 100\scaled[sx=0.5,sy=1.0]{\mathminus}00: \eTD \eTR % \bTR \bTD \mathminus 99\scaled[sx=0.5,sy=1.0]{\mathminus}00:+ \eTD \eTR % \bTR \bTD \mathminus 99\scaled[sx=0.5,sy=1.0]{\mathminus}00: \eTD \eTR % \eTABLE

\stoptext

But I came up with a solution that works. Rather than attempt to shrink the minus glyph, I define a new glyph that corrects the height of the hyphen-minus:

\startluacode local function addsmallminus(tfmdata) local hchar = tfmdata.characters[0x002D] local mchar = tfmdata.characters[0x2212] tfmdata.characters[0xFE000] = { width = hchar.width, height = mchar.height, commands = { { "down", hchar.height-mchar.height }, { "char", 0x002D }, } } end

fonts.constructors.newfeatures("otf").register { name = "smallminus", description = "small minus", manipulators = { base = addsmallminus, node = addsmallminus, } }

\stopluacode

\definefontfeature[default][default][smallminus=yes] \edef\smallminus{\normalUchar"FE000}

\starttext

\bTABLE[aligncharacter=yes,alignmentcharacter={text->\smallminus}] \bTR \bTD \mathminus100\smallminus00+ \eTD \eTR \bTR \bTD 100\smallminus00 \eTD \eTR \bTR \bTD \mathminus 99\smallminus00+ \eTD \eTR \bTR \bTD \mathminus 99\smallminus00 \eTD \eTR \eTABLE

\stoptext

So this looks good and works with any font. The only issue is fonts that use a different line thickness for the minus and hyphen-minus; this top-aligns the glyphs.

Is there a way to make this glyph available in math-mode? I get a "?" when I try:

\math{\smallminus} \math{\mathchar"FE000}

Thanks for all your help!

One problem with your approach is that you can never know if that private slot isn't already used. This can be avoided with \startluacode local function addsmallminus(tfmdata) local hchar = tfmdata.characters[0x002D] local mchar = tfmdata.characters[0x2212] if hchar and mchar then fonts.helpers.addprivate(tfmdata, "smallminus", { width = hchar.width, height = mchar.height, commands = { { "down", hchar.height - mchar.height }, { "char", 0x002D }, } }) end end fonts.constructors.newfeatures.otf.register { name = "smallminus", description = "small minus", default = true, manipulators = { base = addsmallminus, node = addsmallminus, } } \stopluacode The default set to true makes that you don't need to do: % \definefontfeature[default] [default] [smallminus=yes] % \definefontfeature[math-text] [math-text] [smallminus=yes] % \definefontfeature[math-script] [math-script] [smallminus=yes] % \definefontfeature[math-scriptscript] [math-scriptscript] [smallminus=yes] and using \privatechar{smallminus} instead. Originally these privates were for internal (housekeeping and reporting) use only but i made it a bit more general. But to make it more convenient and to avoid too many such features added I'll provide fonts.helpers.addextraprivate("smallminus", function(tfmdata) local hchar = tfmdata.characters[0x002D] local mchar = tfmdata.characters[0x2212] if hchar and mchar then return { width = hchar.width, height = mchar.height, commands = { { "down", hchar.height - mchar.height }, { "char", 0x002D }, } } end end) hooked into the enabled-by-default feature "extraprivates" (maybe i'll add a method to change these global defaults of features). The catch with these private characters in math mode is that in math mode there is not really a font but families that represent sizes that are bound to fonts, so it's more indirect. This is why a hard coded number can fail as these private numbers can differ per font. But this works: \def\smallminus{\privatechar{smallminus}} \starttext \bTABLE[aligncharacter=yes,alignmentcharacter={text->\smallminus}] \bTR \bTD \mathminus100\smallminus00+ \eTD \eTR \bTR \bTD 100\smallminus00 \eTD \eTR \bTR \bTD \mathminus 99\smallminus00+ \eTD \eTR \bTR \bTD \mathminus 99\smallminus00 \eTD \eTR \eTABLE [\getprivateslot{smallminus}] [\getprivatechar{smallminus}] $[\smallminus]$ \stoptext Because \privatechar in text mode will expand to an utf (so in your case the same font is assumes because you need the slots to be the same for the alignment check; I might decide to share private code points for that purpose). In math mode you will get the right character too. 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 -----------------------------------------------------------------