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<texcode>\mirror{\vbox{Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do: once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, `and what is the use of a book,' thought Alice `without pictures or conversation?'}}</texcode> <contextsource=yes>
(This is not just about text manipulation...)You can adjust the size of an element by cropping/clipping its borders:
Scaling Rotating Mirroring Clipping (view source)
Revision as of 11:10, 26 November 2012
, 11:10, 26 November 2012{{Getting started navbox}}
< [[Graphics]] | [[Using_Graphics]] >
In [http://source.contextgarden.net/tex/context/base/core-mis.mkii core-mis.mkii] ([http://source.contextgarden.net/tex/context/base/core-mis.mkiv core-mis.mkiv] for MkIV) there are some handy commands for graphical text manipulation defined.
This page’s title is misleading, since you can use the commands also for graphics and other “building blocks”.
== \scale ==
You can insert symbols at a reduced size in the text flow. This example creates a filled square scaled to .5 ex height
<texcodecontext source=yes>\definefontsynonym[Dingbats][uzdr]\definesymbol[filledSq][\getglyphgetscaledglyph{Dingbats.5}{\char110Serif}]\def\FilledSquare% {\dontleavehmode\scale[height=0.5ex]{\symbol[filledSq]}a}</texcode> In TeX terms, \scale creates a \hbox. If TeX is in vertical mode (as it is when \startlines is in effect, because every lineis a paragraph by itself in the mode), then a simple \hbox is not a good enough hint to make it switch to horizontal (paragraph) mode. Hans then posted a simpler way.<texcode>\getscaledglyph{.52}{Serif}{a}</texcodecontext> {{todo|An explanation and example of the <cmd>scale</cmd> command.}}
== \mirror ==
<texcodecontext source=yes>There is a \mirror{\sl mirorred} word in this sentence.</texcode> <context>There is a \mirror{\sl mirorredword} word in this sentence.
</context>
<code>\mirror</code> makes a <code>\hbox</code> and mirrors the contents. If you want to have a longer paragraph mirrored, you have to make a <code>\vbox</code> manually.
\mirror{\vbox{Alice was beginning to get very tired of sitting by her sister on the bank, and of having nothing to do:
once or twice she had peeped into the book her sister was reading, but it had no pictures or conversations in it, `and
\rotate{the ultimate answer}
</context>
=== location parameter ===
An example by Hans Hagen showing the influence of <code>location=</code> argument at different angles:
You can rotate a long paragraph as well.
=== in a box ===
Depending on the usage you will sometimes probably want to include the content of what you wish to rotate into a box. Compare the following two examples:
a\rotate{\hbox{e}}i
</context>
=== page dependent landscape figures ===
Sometimes, in a double-sided portrait document, you may wish to rotate a landscape figure so that the top is towards the spine of the book – no matter whether it's on an odd or even page. In this case the <cmd>doifoddpageelse</cmd> command can help:
<texcode>
\rotate[rotation=\doifoddpageelse{90}{270}]{\externalfigure[cow]}
</texcode>
This example is by Wolfgang, from [http://www.ntg.nl/pipermail/ntg-context/2011/059834.html the thread starting here]. The thread contains other solutions to the problem.
== \clip ==
<context source="yes">
\clip[nx=3,ny=3,x=1,y=1]{\externalfigure[cow]}
</context>
<context source="yes">
see also <cmd>setupclipping</cmd> and <cmd>clip</cmd>
{{Getting started navbox}}
