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Update figure style of triple terms (#168)
* Enable dark mode and update CSS of figure element * Align SVG figures with Primer and enable dark mode * Update triple term figure descriptions * Remove links to old figure versions on google docs * Only force color-scheme through user-checked input * Improve SVG figure rendering for WebKit * Move object fallback text to aria-label attribute
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‎spec/asserted-triple-term.svg‎

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‎spec/figure.css‎

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:root { --bg: #fff; --solid: #eee; --abstract: #aaa; --fg: #000 }
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@media (prefers-color-scheme: dark) {
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:root { --bg: #000; --solid: #333; --abstract: #777; --fg: #eee }
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}
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svg { background-color: var(--bg); stroke: none }
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ellipse { stroke: var(--fg); fill: var(--solid) }
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path.arrow { stroke: var(--fg); marker-end: url(#arrowhead) }
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#arrowhead { fill: var(--fg) }
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text { fill: var(--fg); font-family: Helvetica, sans-serif }
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text.middle { text-anchor: middle }
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text.italic { font-style: italic }
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path.reifies { stroke: var(--fg); stroke-width: 1; marker-start: url(#arrowhead); fill: none }
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.abstract > path.arrow { stroke: var(--abstract); stroke-dasharray: 8; marker-end: url(#arrowhead-abstract) }
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#arrowhead-abstract { fill: var(--abstract) }
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.abstract > text { fill: var(--abstract) }
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.unlinked > ellipse { stroke: var(--abstract) }

‎spec/index.html‎

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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="color-scheme" content="light dark">
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<title>RDF 1.2 Concepts and Abstract Syntax</title>
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<script src="https://www.w3.org/Tools/respec/respec-w3c" class="remove"></script>
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<script src="./common/local-biblio.js" class="remove"></script>
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};
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</script>
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<style>
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figure { text-align: center; }
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body:has(input[type='radio'][value='light']:checked) { color-scheme: light }
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body:has(input[type='radio'][value='dark']:checked) { color-scheme: dark }
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figure { text-align: center }
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figure > a { display: block }
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figure > a > object { max-width: 40em; pointer-events: none }
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table.simple td, table th { border: 1px solid #ddd; padding: 0.2em 0.5em; }
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ol ol { list-style-type: lower-latin; }
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.grammar td { font-family: monospace;}
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node-arc-node link.</p>
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<figure id="fig-rdf-graph">
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<a href="rdf-graph.svg"><img src="rdf-graph.svg" alt="An RDF graph with two nodes (Subject and Object) and a triple connecting them (Predicate)" /></a>
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<a href="rdf-graph.svg">
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<object data="rdf-graph.svg"
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aria-label="An RDF graph with two nodes (Subject and Object) and a triple connecting them (Predicate)"></object>
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</a>
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<figcaption>An RDF graph with two nodes (Subject and Object) and a triple connecting them (Predicate)</figcaption>
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</figure>
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Concrete syntaxes, such as Turtle [[RDF12-TURTLE]],
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may have shortcuts for capturing a <a>triple term</a> with its <a>reifier</a>.</p>
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<p>The following diagram represents a statement and a reification of an unasserted <a>triple term</a>.</p>
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<p>The following diagram represents a <a>reifying triple</a> of an unasserted, abstract <a>triple term</a>, and a <a>triple</a> relating the <a>reifier</a> to another resource.</p>
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<figure id="fig-triple-term">
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<a href="triple-term.svg">
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<!-- A version of this graphic can be found at https://docs.google.com/drawings/d/1RP9Nw5GCNjduWSXZj_EZ8FaAc7p_N-WVmzJ0syvum1k -->
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<img src="triple-term.svg"
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alt="An RDF graph containing a triple that references an unasserted triple term (with grey background) via a reifier"
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style="width:70%"
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aria-describedby="fig-triple-term-alt"/>
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<object data="triple-term.svg" aria-describedby="fig-triple-term-alt"
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aria-label="An RDF graph containing a triple that references an unasserted triple term (with grey dashed arc) via a reifier"></object>
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</a>
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<figcaption id="fig-triple-term-alt">
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An <a>RDF graph</a> containing a <a>triple</a> that references an unasserted <a>triple term</a> (with grey background) via a <a>reifier</a>.
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An <a>RDF graph</a> containing a <a>reifying triple</a> that references an abstract <a>triple term</a> (which is unasserted, depicted using a grey, dashed arc) from a <a>reifier</a>; and a triple describing this reifier.
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</figcaption>
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</figure>
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<p>A variation on the graph shown in <a href="#fig-triple-term"></a> can be described
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where the <a>triple term</a> is also <a data-lt="asserted triple">asserted</a>.</p>
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<p>Here is a variation on the graph shown in <a href="#fig-triple-term"></a>. This represents a graph
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where the <a>triple term</a> corresponds to an <a>asserted triple</a>.
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</p>
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<figure id="fig-asserted-triple-term">
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<a href="asserted-triple-term.svg">
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<!-- A version of this graphic can be found at https://docs.google.com/drawings/d/1gAHQj4wk87tmeHf4-wnxdgmjq3T05_ovrJq0V-1VXKw -->
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<img src="asserted-triple-term.svg"
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alt="An RDF graph containing a triple that references an triple term, which is also asserted, via a reifier"
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style="width:70%"
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aria-describedby="fig-asserted-triple-term-alt"/>
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<object data="asserted-triple-term.svg" aria-describedby="fig-asserted-triple-term-alt"
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aria-label="An RDF graph containing a reifying triple where the triple term corresponds to an asserted triple"></object>
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</a>
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<figcaption id="fig-asserted-triple-term-alt">
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An <a>RDF graph</a> containing a <a>triple</a> that references an <a>triple term</a>, which is also asserted, via a <a>reifier</a>.
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An <a>RDF graph</a> containing a <a>reifying triple</a> where the <a>triple term</a> corresponds to an <a>asserted triple</a>.
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The diagram represents the proposition as a fact using the asserted triple, meaning that the relationship holds.
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</figcaption>
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</figure>
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‎spec/rdf-graph.svg‎

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‎spec/triple-term.svg‎

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