m.math: ability to color equation parts using m.css color classes.

diff --git a/pelican-plugins/latex2svgextra.py b/pelican-plugins/latex2svgextra.py
index c442e1ac82d99df9d94e7a1cf243d33b8c0586d8..a93be7af488ee134944dfcb03c6432209794c739 100644 (file)
--- a/pelican-plugins/latex2svgextra.py
+++ b/pelican-plugins/latex2svgextra.py
@@ -43,11 +43,31 @@ params.update({
 \usepackage{amssymb}
 \usepackage{gensymb}
 \usepackage{newtxtext}
+
+\usepackage{xcolor}
+\definecolor{m-default}{HTML}{cafe03}
+\definecolor{m-primary}{HTML}{cafe04}
+\definecolor{m-success}{HTML}{cafe05}
+\definecolor{m-warning}{HTML}{cafe06}
+\definecolor{m-danger}{HTML}{cafe07}
+\definecolor{m-info}{HTML}{cafe08}
+\definecolor{m-dim}{HTML}{cafe09}
 """,
     # Zoom the letters a bit to match page font size
     'dvisvgm_cmd': 'dvisvgm --no-fonts -Z 1.25',
     })
 
+# Mapping from color codes to CSS classes. Keep in sync with m.plots.
+_class_mapping = {
+    ('fill=\'#cafe03\'', 'class=\'m-default\''),
+    ('fill=\'#cafe04\'', 'class=\'m-primary\''),
+    ('fill=\'#cafe05\'', 'class=\'m-success\''),
+    ('fill=\'#cafe06\'', 'class=\'m-warning\''),
+    ('fill=\'#cafe07\'', 'class=\'m-danger\''),
+    ('fill=\'#cafe08\'', 'class=\'m-info\''),
+    ('fill=\'#cafe09\'', 'class=\'m-dim\'')
+}
+
 _patch_src = re.compile(r"""<\?xml version='1.0' encoding='UTF-8'\?>
 <!-- This file was generated by dvisvgm \d+\.\d+\.\d+ -->
 <svg height='(?P<height>[^']+)pt' version='1.1' viewBox='(?P<viewBox>[^']+)' width='(?P<width>[^']+)pt' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink'>
@@ -126,17 +146,12 @@ def pickle_cache(file):
         pickle.dump(cache_to_save, f)
 
 # Patches the output from dvisvgm
-# - w/o the XML preamble and needless xmlns attributes
-# - unique element IDs (see `counter`)
-# - adjusts vertical align if depth is not none
-# - adds additional `attribs` to the <svg> element
 def patch(formula, svg, depth, attribs):
-    global counter
-    counter += 1
-
+    # patch away XML preamble and needless attributes, convert `pt` to `em`,
+    # add vertical align for inline formulas and add additional attribs like
+    # CSS classes to the <svg> element
     if depth is None: style = ''
     else: style = ' vertical-align: -{:.3f}em;'.format(depth*1.25)
-
     def repl(match):
         return _patch_dst.format(
             width=pt2em*float(match.group('width')),
@@ -145,5 +160,14 @@ def patch(formula, svg, depth, attribs):
             viewBox=match.group('viewBox'),
             attribs=attribs,
             formula=html.escape(formula))
+    svg = _patch_src.sub(repl, svg)
+
+    # Make element IDs unique
+    global counter
+    counter += 1
+    svg = _unique_src.sub(_unique_dst.format(counter=counter), svg)
+
+    # Replace color codes with CSS classes
+    for src, dst in _class_mapping: svg = svg.replace(src, dst)
 
-    return _unique_src.sub(_unique_dst.format(counter=counter), _patch_src.sub(repl, svg))
+    return svg

diff --git a/pelican-plugins/m/plots.py b/pelican-plugins/m/plots.py
index 1d09cf97239e3429f5091b22e1b8f7f168121c8e..42f95dc00dfa1436b366708baf04d43a9d03a393 100644 (file)
--- a/pelican-plugins/m/plots.py
+++ b/pelican-plugins/m/plots.py
@@ -62,7 +62,7 @@ mpl.rcParams['figure.autolayout'] = True # so it relayouts everything to fit
 # Gets increased for every graph on a page to (hopefully) ensure unique SVG IDs
 mpl.rcParams['svg.hashsalt'] = 0
 
-# Color codes for bars
+# Color codes for bars. Keep in sync with latex2svgextra.
 style_mapping = {
     'default': '#cafe03',
     'primary': '#cafe04',
@@ -108,7 +108,7 @@ _class_mapping = [
     # Title text
     ('style="fill:#cafe02;font-family:{font};font-size:13px;font-style:normal;font-weight:normal;', 'class="m-title" style="'),
 
-    # Bar colors
+    # Bar colors. Keep in sync with latex2svgextra.
     ('style="fill:#cafe03;"', 'class="m-bar m-default"'),
     ('style="fill:#cafe04;"', 'class="m-bar m-primary"'),
     ('style="fill:#cafe05;"', 'class="m-bar m-success"'),

diff --git a/pelican-plugins/m/test/math/page-code-fallback.html b/pelican-plugins/m/test/math/page-code-fallback.html
index 73e55724e95a75fb41d5dcc34363a539e96bcf79..9c1869d123fee30392ec1aa99113e7805f97a32f 100644 (file)
--- a/pelican-plugins/m/test/math/page-code-fallback.html
+++ b/pelican-plugins/m/test/math/page-code-fallback.html
@@ -25,6 +25,8 @@
 <!-- content -->
 <p>Inline colored math <code>a^2</code> and colored math block:</p>
 <pre>a^2 + b^2 = c^2</pre>
+<p>Colored parts of inline <code>b^2 - \color{m-info}{4ac}</code> and block formulas:</p>
+<pre>\frac{-b \pm \color{m-success} \sqrt{D}}{2a}</pre>
 <p>Properly align <em>huge</em> formulas vertically on a line:
 <code>\hat q^{-1} = \frac{\hat q^*}{|\hat q|^2}</code>
 and make sure there's enough space for all the complex <code>W</code> things between

diff --git a/pelican-plugins/m/test/math/page.html b/pelican-plugins/m/test/math/page.html
index bffc2b62b94645b2da49ecf1dbb414f6a51a6252..8a2a3c81822685d30371871a13830954a44c44ee 100644 (file)
--- a/pelican-plugins/m/test/math/page.html
+++ b/pelican-plugins/m/test/math/page.html
@@ -60,38 +60,91 @@ a^2 + b^2 = c^2
 <use x='219.8' xlink:href='#eq2-g1-50' y='-5.84939'/>
 </g>
 </svg></div>
+<p>Colored parts of inline <svg class="m-math" style="width: 4.308em; height: 1.091em; vertical-align: -0.104em;" viewBox="0 -9.47474 41.3572 10.471">
+<title>
+b^2 - \color{m-info}{4ac}
+</title>
+<defs>
+<path d='M7.87846 -2.74969C8.08169 -2.74969 8.29689 -2.74969 8.29689 -2.98879S8.08169 -3.2279 7.87846 -3.2279H1.41071C1.20747 -3.2279 0.992279 -3.2279 0.992279 -2.98879S1.20747 -2.74969 1.41071 -2.74969H7.87846Z' id='eq3-g0-0'/>
+<path d='M3.59851 -1.42267C3.53873 -1.21943 3.53873 -1.19552 3.37136 -0.968369C3.10834 -0.633624 2.58232 -0.119552 2.02042 -0.119552C1.53026 -0.119552 1.25529 -0.561893 1.25529 -1.26725C1.25529 -1.92478 1.6259 -3.26376 1.85305 -3.76588C2.25953 -4.60274 2.82142 -5.03313 3.28767 -5.03313C4.07671 -5.03313 4.23213 -4.0528 4.23213 -3.95716C4.23213 -3.94521 4.19626 -3.78979 4.18431 -3.76588L3.59851 -1.42267ZM4.36364 -4.48319C4.23213 -4.79402 3.90934 -5.27223 3.28767 -5.27223C1.93674 -5.27223 0.478207 -3.52677 0.478207 -1.75741C0.478207 -0.573848 1.17161 0.119552 1.98456 0.119552C2.64209 0.119552 3.20399 -0.394521 3.53873 -0.789041C3.65828 -0.0836862 4.22017 0.119552 4.57883 0.119552S5.22441 -0.0956413 5.4396 -0.526027C5.63088 -0.932503 5.79826 -1.66177 5.79826 -1.70959C5.79826 -1.76936 5.75044 -1.81719 5.6787 -1.81719C5.57111 -1.81719 5.55915 -1.75741 5.51133 -1.57808C5.332 -0.872727 5.10486 -0.119552 4.61469 -0.119552C4.268 -0.119552 4.24408 -0.430386 4.24408 -0.669489C4.24408 -0.944458 4.27995 -1.07597 4.38755 -1.54222C4.47123 -1.8411 4.53101 -2.10411 4.62665 -2.45081C5.06899 -4.24408 5.17659 -4.67447 5.17659 -4.7462C5.17659 -4.91357 5.04508 -5.04508 4.86575 -5.04508C4.48319 -5.04508 4.38755 -4.62665 4.36364 -4.48319Z' id='eq3-g1-97'/>
+<path d='M2.76164 -7.99801C2.7736 -8.04583 2.79751 -8.11756 2.79751 -8.17733C2.79751 -8.29689 2.67796 -8.29689 2.65405 -8.29689C2.64209 -8.29689 2.21171 -8.26102 1.99651 -8.23711C1.79328 -8.22516 1.61395 -8.20125 1.39875 -8.18929C1.11183 -8.16538 1.02814 -8.15342 1.02814 -7.93823C1.02814 -7.81868 1.1477 -7.81868 1.26725 -7.81868C1.87696 -7.81868 1.87696 -7.71108 1.87696 -7.59153C1.87696 -7.50785 1.78132 -7.16115 1.7335 -6.94595L1.44658 -5.79826C1.32702 -5.32005 0.645579 -2.60623 0.597758 -2.39103C0.537983 -2.09215 0.537983 -1.88892 0.537983 -1.7335C0.537983 -0.514072 1.21943 0.119552 1.99651 0.119552C3.38331 0.119552 4.81793 -1.66177 4.81793 -3.39527C4.81793 -4.49514 4.19626 -5.27223 3.29963 -5.27223C2.67796 -5.27223 2.11606 -4.75816 1.88892 -4.51905L2.76164 -7.99801ZM2.00847 -0.119552C1.6259 -0.119552 1.20747 -0.406476 1.20747 -1.33898C1.20747 -1.7335 1.24334 -1.96065 1.45853 -2.79751C1.4944 -2.95293 1.68568 -3.71806 1.7335 -3.87347C1.75741 -3.96912 2.46276 -5.03313 3.27572 -5.03313C3.80174 -5.03313 4.04085 -4.5071 4.04085 -3.88543C4.04085 -3.31158 3.7061 -1.96065 3.40722 -1.33898C3.10834 -0.6934 2.55841 -0.119552 2.00847 -0.119552Z' id='eq3-g1-98'/>
+<path d='M4.67447 -4.49514C4.44732 -4.49514 4.33973 -4.49514 4.17235 -4.35168C4.10062 -4.29191 3.96912 -4.11258 3.96912 -3.9213C3.96912 -3.68219 4.14844 -3.53873 4.37559 -3.53873C4.66252 -3.53873 4.98531 -3.77783 4.98531 -4.25604C4.98531 -4.82989 4.43537 -5.27223 3.61046 -5.27223C2.04433 -5.27223 0.478207 -3.56264 0.478207 -1.86501C0.478207 -0.824907 1.12379 0.119552 2.34321 0.119552C3.96912 0.119552 4.99726 -1.1477 4.99726 -1.30311C4.99726 -1.37484 4.92553 -1.43462 4.87771 -1.43462C4.84184 -1.43462 4.82989 -1.42267 4.72229 -1.31507C3.95716 -0.298879 2.82142 -0.119552 2.36712 -0.119552C1.54222 -0.119552 1.2792 -0.836862 1.2792 -1.43462C1.2792 -1.85305 1.48244 -3.0127 1.91283 -3.82565C2.22366 -4.38755 2.86924 -5.03313 3.62242 -5.03313C3.77783 -5.03313 4.43537 -5.00922 4.67447 -4.49514Z' id='eq3-g1-99'/>
+<path d='M2.24757 -1.6259C2.37509 -1.74545 2.70984 -2.00847 2.83736 -2.12005C3.33151 -2.57435 3.80174 -3.0127 3.80174 -3.73798C3.80174 -4.68643 3.00473 -5.30012 2.00847 -5.30012C1.05205 -5.30012 0.422416 -4.57484 0.422416 -3.8655C0.422416 -3.47497 0.73325 -3.41918 0.844832 -3.41918C1.0122 -3.41918 1.25928 -3.53873 1.25928 -3.84159C1.25928 -4.25604 0.860772 -4.25604 0.765131 -4.25604C0.996264 -4.83786 1.53026 -5.03711 1.9208 -5.03711C2.66202 -5.03711 3.04458 -4.40747 3.04458 -3.73798C3.04458 -2.90909 2.46276 -2.30336 1.52229 -1.33898L0.518057 -0.302864C0.422416 -0.215193 0.422416 -0.199253 0.422416 0H3.57061L3.80174 -1.42665H3.55467C3.53076 -1.26725 3.467 -0.868742 3.37136 -0.71731C3.32354 -0.653549 2.71781 -0.653549 2.59029 -0.653549H1.17161L2.24757 -1.6259Z' id='eq3-g2-50'/>
+<path d='M4.31582 -7.78281C4.31582 -8.00996 4.31582 -8.06974 4.14844 -8.06974C4.0528 -8.06974 4.01694 -8.06974 3.9213 -7.92628L0.32279 -2.34321V-1.99651H3.467V-0.908593C3.467 -0.466252 3.44309 -0.3467 2.57036 -0.3467H2.33126V0C2.60623 -0.0239103 3.55068 -0.0239103 3.88543 -0.0239103S5.17659 -0.0239103 5.45156 0V-0.3467H5.21245C4.35168 -0.3467 4.31582 -0.466252 4.31582 -0.908593V-1.99651H5.52329V-2.34321H4.31582V-7.78281ZM3.52677 -6.85031V-2.34321H0.621669L3.52677 -6.85031Z' id='eq3-g3-52'/>
+</defs>
+<g id='eq3-page1'>
+<use x='0' xlink:href='#eq3-g1-98' y='0'/>
+<use x='4.97711' xlink:href='#eq3-g2-50' y='-4.33844'/>
+<use x='12.3661' xlink:href='#eq3-g0-0' y='0'/>
+<g class='m-info'>
+<use x='24.3212' xlink:href='#eq3-g3-52' y='0'/>
+<use x='30.1742' xlink:href='#eq3-g1-97' y='0'/>
+<use x='36.3192' xlink:href='#eq3-g1-99' y='0'/>
+</g>
+</g>
+</svg> and block formulas:</p>
+<div class="m-math">
+<svg style="width: 5.093em; height: 2.801em;" viewBox="169.824 -26.8886 48.8946 26.8886">
+<title>
+\frac{-b \pm \color{m-success} \sqrt{D}}{2a}
+</title>
+<defs>
+<path d='M7.87846 -2.74969C8.08169 -2.74969 8.29689 -2.74969 8.29689 -2.98879S8.08169 -3.2279 7.87846 -3.2279H1.41071C1.20747 -3.2279 0.992279 -3.2279 0.992279 -2.98879S1.20747 -2.74969 1.41071 -2.74969H7.87846Z' id='eq4-g0-0'/>
+<path d='M4.88966 -3.74197H8.2132C8.41644 -3.74197 8.63163 -3.74197 8.63163 -3.98107S8.41644 -4.22017 8.2132 -4.22017H4.88966V-7.5198C4.88966 -7.71108 4.88966 -7.96214 4.65056 -7.96214S4.41146 -7.74695 4.41146 -7.55567V-4.22017H1.07597C0.872727 -4.22017 0.657534 -4.22017 0.657534 -3.98107S0.872727 -3.74197 1.07597 -3.74197H4.41146V-0.478207H1.07597C0.872727 -0.478207 0.657534 -0.478207 0.657534 -0.239103S0.872727 0 1.07597 0H8.2132C8.41644 0 8.63163 0 8.63163 -0.239103S8.41644 -0.478207 8.2132 -0.478207H4.88966V-3.74197Z' id='eq4-g0-6'/>
+<path d='M4.65056 10.2217L2.54645 5.57111C2.46276 5.37983 2.40299 5.37983 2.36712 5.37983C2.35517 5.37983 2.29539 5.37983 2.16389 5.47547L1.02814 6.33624C0.872727 6.45579 0.872727 6.49166 0.872727 6.52752C0.872727 6.5873 0.908593 6.65903 0.992279 6.65903C1.06401 6.65903 1.26725 6.49166 1.39875 6.39601C1.47049 6.33624 1.64981 6.20473 1.78132 6.10909L4.13649 11.2857C4.22017 11.477 4.27995 11.477 4.38755 11.477C4.56687 11.477 4.60274 11.4052 4.68643 11.2379L10.1141 0C10.1978 -0.167372 10.1978 -0.215193 10.1978 -0.239103C10.1978 -0.358655 10.1021 -0.478207 9.95866 -0.478207C9.86301 -0.478207 9.77933 -0.418431 9.68369 -0.227148L4.65056 10.2217Z' id='eq4-g0-112'/>
+<path d='M1.87696 -0.884682C1.76936 -0.466252 1.74545 -0.3467 0.908593 -0.3467C0.681445 -0.3467 0.561893 -0.3467 0.561893 -0.131507C0.561893 0 0.633624 0 0.872727 0H4.66252C7.07746 0 9.43263 -2.49863 9.43263 -5.16463C9.43263 -6.88618 8.40448 -8.16538 6.69489 -8.16538H2.85729C2.63014 -8.16538 2.52254 -8.16538 2.52254 -7.93823C2.52254 -7.81868 2.63014 -7.81868 2.80946 -7.81868C3.53873 -7.81868 3.53873 -7.72304 3.53873 -7.59153C3.53873 -7.56762 3.53873 -7.49589 3.49091 -7.31656L1.87696 -0.884682ZM4.3995 -7.35243C4.5071 -7.79477 4.55492 -7.81868 5.02117 -7.81868H6.33624C7.46002 -7.81868 8.48817 -7.20897 8.48817 -5.55915C8.48817 -4.96139 8.24907 -2.8812 7.08941 -1.56613C6.75467 -1.17161 5.84608 -0.3467 4.47123 -0.3467H3.10834C2.94097 -0.3467 2.91706 -0.3467 2.84533 -0.358655C2.71382 -0.37061 2.70187 -0.394521 2.70187 -0.490162C2.70187 -0.573848 2.72578 -0.645579 2.74969 -0.753176L4.3995 -7.35243Z' id='eq4-g1-68'/>
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+</defs>
+<g id='eq4-page1'>
+<use x='169.824' xlink:href='#eq4-g0-0' y='-16.2884'/>
+<use x='179.123' xlink:href='#eq4-g1-98' y='-16.2884'/>
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+<g class='m-success'>
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+<rect class='m-success' height='0.478187' width='10.0445' x='208.674' y='-26.8886'/>
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+</svg></div>
 <p>Properly align <em>huge</em> formulas vertically on a line:
 <svg class="m-math" style="width: 4.875em; height: 1.767em; vertical-align: -0.639em;" viewBox="0 -10.8498 46.8022 16.965">
 <title>
 \hat q^{-1} = \frac{\hat q^*}{|\hat q|^2}
 </title>
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 Y = \sum_{i=0}^{n} B
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 <p>The <code>\cfrac</code> thing doesn't align well: <svg class="m-math" style="width: 7.311em; height: 2.514em; vertical-align: -0.526em;" viewBox="0 -14.1436 70.1821 24.1375">
@@ -166,29 +219,29 @@ Y = \sum_{i=0}^{n} B
 W = \sum_{i=0}^{n} \cfrac{w_i}{h_i}
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 <p>Properly escape the formula source:</p>
@@ -200,14 +253,14 @@ W = \sum_{i=0}^{n} \cfrac{w_i}{h_i}
 \end{array}
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@@ -217,4 +270,4 @@ W = \sum_{i=0}^{n} \cfrac{w_i}{h_i}
 </article>
 </main>
 </body>
-</html>
+</html>
\ No newline at end of file

diff --git a/pelican-plugins/m/test/math/page.rst b/pelican-plugins/m/test/math/page.rst
index c18670885a22409a4ff48acb5bd1beb5010feb2e..7356b017a5a66d508e1d3d7ece3a7d87ce34aed9 100644 (file)
--- a/pelican-plugins/m/test/math/page.rst
+++ b/pelican-plugins/m/test/math/page.rst
@@ -13,6 +13,12 @@ Inline colored math :math-primary:`a^2` and colored math block:
 
     a^2 + b^2 = c^2
 
+Colored parts of inline :math:`b^2 - \color{m-info}{4ac}` and block formulas:
+
+.. math::
+
+    \frac{-b \pm \color{m-success} \sqrt{D}}{2a}
+
 Properly align *huge* formulas vertically on a line:
 :math:`\hat q^{-1} = \frac{\hat q^*}{|\hat q|^2}`
 and make sure there's enough space for all the complex :math:`W` things between