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There is a font switch {{cmd|em}} to ''emphasize'' text<context mode="mkiv">\setupbodyfont[8pt]\setupcolors[rgb, state=start]\definecolor[one][c=0, m=. This is somewhat4, y=1, k=0]special: it does automatic italic correction and changes the alternative dependingon the current alternative\definecolor[two][c=0, m=. For example2, if the current font alternative is normal (iy=.e5, k=0]\setupTABLE[frame=off,offset=0. upright)5em] \setupTABLE[c][2][style=\rm]\setupTABLE[c][3][style=\ss]\setupTABLE[c][4][style=\tt]\setupTABLE[r][1][background=color, backgroundcolor=one]\setupTABLE[c][1][background=color,backgroundcolor=one] \startTABLE \NC \NC \type{\rm} serif \NC \type{cmd|em\ss}sans serif \NC \type{\tt} switches to slanted; and if the current font alternative is slanted,teletype \NC \NR \NC \type{\tf} \NC Normal \NC Normal \NC Normal \NC \NR \NC \type{\bf} \NC \bf Bold \NC \bf Bold \NC \bf Bold \NC \NR \NC \type{\it} \NC \it Italic \NC \it Italic \NC \it Italic \NC \NR \NC \type{\sl} \NC \sl Slanted \NC \sl Slanted \NC \sl Slanted\NC \NR \NC \type{\bi} \NC \bi Bold Italic \NC \bi Bold Italic \NC \bi Bold Italic\NC \NR \NC \type{cmd|em\bs} \NC \bs Bold Slanted \NC \bs Bold Slanted \NC \bs Bold Slanted\NC \NR \NC \type{\sc} switches to normal. \NC \sc Smallcaps \NC \sc Smallcaps \NC \sc Smallcaps\NC \NR\stopTABLE
ConTeXt uses the Latin Modern fonts by default; these fonts looksimilar to the original Computer Modern fonts, but have a much largercharacter repertoire. As it happens, in the Latin Modern (and ComputerModern) fonts, the slanted font does not stand out from theupright font enough for some tastes; so, many people prefer to use theitalic font for emphasis. To do that use <texcode>\definebodyfontenvironment[default][em=italic]</texcodecontext>
The recipes as given work with the standalone ConTeXt distribution, but not
with TeX Live et al. [http://pragma-ade.com/general/technotes/tfmetrics.pdf]
explains why ConText uses separate font metrics, and gives some differences
between the sets. To use the recipes with other distributions,
try adding one of <code>\usetypescript[berry][ec]</code> or
<code>\usetypescript[adobekb][ec]</code>.
== Conclusion ==
There are many other ways of choosing font styles in ConTeXt. If thesebasic styles do not satisfy your needs, have a look at the [[Manuals|manuals]],or ask on the [[ConTeXt Mailing Lists]].
mkiv → mkvi
< [[Basic Text Formatting]] | [[Fonts]] | [[Font Sizes]] >
* a complete font change ({{cmd|setupbodyfont}}, {{cmd|switchtobodyfont}}).
== Warning Before you start ... ==
1. Placing a font switch at the begin of a paragraph can sometimesgenerate unexpected side-effects. This can be avoided by forcinghorizontal mode before any font change:
<texcode>
\dontleavehmode{\bf Warning!} Care must be taken when a font switch is usedat the beginning of a paragraph.\par
</texcode>
2. It is usually a bad style to use explicit font switches in the text. It is better to define a semantic command that takes care of the font switching. For example, instead of using <code>{\bf\red important text}</code>
<texcode>
\definehighlight[important][style=bold, color=red]
</texcode>
and then use <code>\important{important text}</code> in the text.
== Font styles and alternatives ==
You can generally combine font styles with alternatives, so if you want to
switch to bold sans serif, you can use either <code>\bf\ss</code> or
<code>\ss\bf</code>. The various combinations look like the following.
A font switch remains valid for the rest of the ''group''. So, if you want to
And serif again
</context>
== Emphasizing text ==
There is a font switch {{cmd|em}} to ''emphasize'' text. This is somewhat
special: it does automatic italic correction and changes the alternative depending
on the current alternative. For example, if the current font alternative is normal (i.e. upright),
{{cmd|em}} switches to slanted; and if the current font alternative is slanted,
{{cmd|em}} switches to normal.
<context>
\starttabulate[|l|f{\tf}l|f{\it}l|f{\sl}l|f{\bf}l|f{\bi}l|f{\bs}l|]
\NC \NC \tttf \tex{tf} \NC \tttf \tex{it} \NC \tttf \tex{sl} \NC
\tttf \tex{bf} \NC \tttf \tex{bi} \NC \tttf \tex{bs} \NC\NR
\NC \NC Text \NC Text \NC Text \NC
Text \NC Text \NC Text \NC\NR
\NC \tex{em} \NC \em Text \NC \em Text \NC \em Text \NC
\em Text \NC \em Text \NC \em Text \NC\NR
\NC \tex{boldface} \NC \boldface Text \NC \boldface Text \NC \boldface Text \NC
\boldface Text \NC \boldface Text \NC \boldface Text \NC\NR
\NC \tex{typeface} \NC \typeface Text \NC \typeface Text \NC \typeface Text \NC
\typeface Text \NC \typeface Text \NC \typeface Text \NC\NR
\NC \tex{swapface} \NC \swapface Text \NC \swapface Text \NC \swapface Text \NC
\swapface Text \NC \swapface Text \NC \swapface Text \NC\NR
\stoptabulate
</context>
ConTeXt uses the Latin Modern fonts by default; these fonts look
similar to the original Computer Modern fonts, but have a much larger
character repertoire. As it happens, in the Latin Modern (and Computer
Modern) fonts, the slanted font does not stand out from the
upright font enough for some tastes; so, many people prefer to use the
italic font for emphasis. To do that use
<texcode>
\definebodyfontenvironment[default][em=italic]
</texcode>
{{note| For Opentype fonts, italic correction needs to be set using
<texcode>\definefontfeature[default][default][itlc=yes]</texcode>}}
== Font sizes ==
<code>(1.2)^2 = 1.44</code>, {{cmd|tfc}} to scale by <code>(1.2)^3 = 1.728</code> and {{cmd|tfd}} to
scale by <code>(1.2)^4 = 2.074</code>. The scale is relative to the current bodyfont size.
To decrease the font size, you can use {{cmd|tfx}}
to scale the font by a factor of <code>0.8</code> and {{cmd|tfxx}} to scale by a factor
of <code>0.6</code>.
The complete set of relative font sizes are listed below:
{| style="border:1px solid #ffcc00; width:100%; padding: 0.5em;"
|- align="right"
!size||factor ||4pt||5pt||6pt||7pt||8pt||9pt||10pt||11pt||12pt||14.4pt||17.3pt||20.7pt
|- align="right"
|xx ||0.6 ||4 ||5 ||5 ||5 ||5 ||5 ||6 ||7 ||8 ||10 ||12 ||14.4
|- align="right"
|x ||0.8 ||4 ||5 ||5 ||6 ||6 ||7 ||8 ||9 ||10 ||12 ||14.4 ||17.3
|- align="right" style="background-color: #ffeebb;"
|tf ||1.0 ||4 ||5 ||6 ||7 ||8 ||9 ||10 ||11 ||12 ||14.4 ||17.3 ||20.7
|- align="right"
|a ||1.2 ||4.8||6.0||7.2||8.4||9.6||10.8||12.0||13.2||14.4||17.3 ||20.7 ||24.8
|- align="right"
|b ||1.44 ||5.8||7.2||8.6||10.1||11.5||13.0||14.4||15.8||17.3||20.7||24.9 ||29.8
|- align="right"
|c ||1.728 ||6.9||8.6||10.4||12.1||13.8||15.6||17.3||19.0||20.7||24.9||29.9||35.8
|- align="right"
|d ||2.074 ||8.3||10.4||12.4||14.5||16.6||18.7||20.7||22.8||24.9||29.9||35.9||42.9
|- align="right"
|e ||2.488 ||10.0||12.4||14.9||17.4||19.9||22.4||24.9||27.4||29.9||35.8||43.0||52.5
|-
| _
|- align="right"
|scriptscript|| 0.5 ||4 ||5 ||5 ||5 ||5 ||5 ||5 ||6 ||7 ||9 ||10 ||12
|- align="right"
|script|| 0.7 ||4 ||5 ||5 ||6 ||6 ||7 ||7 ||8 ||9 ||11 ||12 ||14.4
|- align="right"
|small|| 0.8 ||4 ||4 ||5 ||5 ||6 ||7 ||8 ||9 ||10 ||12 ||14.4||17.3
|- align="right"
|big || 1.2 ||6 ||7 ||8 ||9 ||10 ||11 ||12 ||12 ||14.4||17.3||20.7||20.7
|}
As defined in [[source:font-ini.mkvi|font-ini]]. All sizes in pt, except factor.
The mapping of particular command suffixes (a, x, etc.) and current bodyfont size to effective font size can
be changed by {{cmd|definebodyfontenvironment}}.The default values defined in [[source:font-ini.mkiv|font-ini]] are:<texcode>\definebodyfontenvironment [\s!default] [ \s!text=1.0, \s!script=0.7, \s!scriptscript=0.5, \c!a=1.200, \c!b=1.440, \c!c=1.728, \c!d=2.074, *=\currentfontscale, % wildcard \c!x=0.8, \c!xx=0.6, \c!big=1.2, \c!small=0.8, \c!interlinespace=, \c!em=\v!slanted]</texcode>'''N.B.''': <code>scirpt</code> and <code>scriptsize</code> are used in math mode. It is also possible to set the scaling factors for specific font sizes. For example, if you want{{cmd|tfa}} to set the effective font size to 12pt when the bodyfont size is 10pt, and to set the effective font size to
14pt when the bodyfont size is 11pt, then add
<texcode>
\definebodyfontenvironment [11pt] [a=14pt]
</texcode>
'''Note:''' When the first parameter is <code>default</code>, the scaling factors ''must'' have numerical values. When the first parameter is a font size (e.g., <code>12pt</code>), the scaling factors can either be numerical value or a dimension.
{{cmd|definebodyfontenvironment}} is described in detail in
the ConTeXt manual and the [[source:font-ini.texmkiv|font-ini.tex]] source file.
Font size can be combined with font styles. As a shortcut, you can use
In addition, the commands {{cmd|smallbodyfont}} and
{{cmd|bigbodyfont}} can be used to change the font size. The relative size depends on the value of <code>big</code> and <code>small</code> in {{cmd|definebodyfontenvironment}}.
These mnemonic font switches are pretty smart. You can either use them as
\setuphead[section][style=bold]
</texcode>
(<code>\boldface</code> shown above is also defined to parallel the
<code>\typeface</code> and <code>\swapface</code> switches.)
== Complete font (bodyfont) change ==
{{cmd|switchtobodyfont}} can be localized within a group as usual.
== Different Switching typefaces ==
So far we have discussed style and size changes within a given typeface
family. If you want to use a different typeface altogether, such as Times or
Palatino, see the Pragma web site has recipes covering all the commonly availabletypefaces [http://pragma-ade.com/general/manuals/showfont.pdf], while aseparate manual describes how to write support for new typefaces[http://pragma-ade.com/general/manuals/mfonts.pdf]following articles.
* [[Simple Typescript Example]]
* [[Linux Libertine on mkiv]]
[[Category:Fonts]]
