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sile-typesetter / sile / 9699312690

27 Jun 2024 03:22PM UTC coverage: 62.16% (-9.2%) from 71.339%
9699312690

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Merge ea2d501b6 into 8c5a2a2ba

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89.47
/packages/raiselower/init.lua
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local base = require("packages.base")
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local package = pl.class(base)
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package._name = "raiselower"
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local function raise (height, content)
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   SILE.typesetter:pushHbox({
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      outputYourself = function (_, typesetter, _)
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         typesetter.frame:advancePageDirection(-height)
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      end,
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   })
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   SILE.process(content)
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   SILE.typesetter:pushHbox({
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      outputYourself = function (_, typesetter, _)
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         typesetter.frame:advancePageDirection(height)
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      end,
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   })
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end
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function package:registerCommands ()
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   self:registerCommand("raise", function (options, content)
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      local height = SU.cast("measurement", options.height)
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      raise(height:absolute(), content)
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   end, "Raises the contents of the command by the amount specified in the <height> option")
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   self:registerCommand("lower", function (options, content)
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      local height = SU.cast("measurement", options.height)
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      raise(-height:absolute(), content)
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   end, "Lowers the contents of the command by the amount specified in the <height> option")
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end
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package.documentation = [[
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\begin{document}
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If you don’t want your images, rules, or text to be placed along the baseline, you can use the \autodoc:package{raiselower} package to move them up and down.
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It provides two simple commands, \autodoc:command{\raise} and \autodoc:command{\lower}, which both take a \autodoc:parameter{height=<dimension>} parameter.
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They will respectively raise or lower their argument by the given height.
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The raised or lowered content will not alter the height or depth of the line.
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Here is some text raised by \raise[height=3pt]{three points}; here is some text lowered by \lower[height=4pt]{four points}.
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The previous paragraph was generated by:
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\begin[type=autodoc:codeblock]{raw}
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Here is some text raised by \raise[height=3pt]{three points}; here is some text lowered by \lower[height=4pt]{four points}.
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\end{raw}
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\end{document}
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]]
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return package
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