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imgmathのfontsize/lineheightをtexequationにも適用する #1146

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imgmathのfontsize/lineheightをtexequationにも適用する #1146

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4 changes: 3 additions & 1 deletion lib/review/htmlbuilder.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -547,7 +547,9 @@ def texequation(lines)
p = MathML::LaTeX::Parser.new(symbol: MathML::Symbol::CharacterReference)
puts p.parse(unescape(lines.join("\n")), true)
elsif @book.config['imgmath']
math_str = "\\begin{equation*}\n" + unescape(lines.join("\n")) + "\n\\end{equation*}\n"
math_str = "\\begin{equation*}\n" + "\\begin{block_equation}\n" +
unescape(lines.join("\n")) +
"\n\\end{block_equation}\n" + "\\end{equation*}\n"
key = Digest::SHA256.hexdigest(math_str)
math_dir = File.join(@book.config['imagedir'], '_review_math')
Dir.mkdir(math_dir) unless Dir.exist?(math_dir)
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23 changes: 23 additions & 0 deletions lib/review/makerhelper.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -95,15 +95,38 @@ def default_imgmath_preamble
EOB
end

def equation_block_style(f,h)
<<-EOB
\\newenvironment{block_equation}
{
\\fontsize{#{f}}{#{h}}\\selectfont
}
{
}
EOB
end

def make_math_images(math_dir)
fontsize = @config['imgmath_options']['fontsize'].to_f
lineheight = @config['imgmath_options']['lineheight'].to_f

block_fontsize = fontsize
block_lineheight = lineheight
if @config['imgmath_options']['block_fontsize']
block_fontsize = @config['imgmath_options']['block_fontsize']
end
if @config['imgmath_options']['block_lineheight']
block_lineheight = @config['imgmath_options']['block_lineheight']
end

texsrc = default_imgmath_preamble

if @config['imgmath_options']['preamble_file'] && File.readable?(@config['imgmath_options']['preamble_file'])
texsrc = File.read(@config['imgmath_options']['preamble_file'])
end

texsrc << equation_block_style(block_fontsize, block_lineheight)

texsrc << <<-EOB
\\begin{document}
\\fontsize{#{fontsize}}{#{lineheight}}\\selectfont
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