[binary-search-tree] Four SVG graphs #2285
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habere-et-dispertire
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Co-authored-by: Jeremy Walker <[email protected]>
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Are these image urls auto-signed @iHiD because right now they don't work. |
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I think [binary-search-tree] Four SVG graphs #14 is awaiting consideration and blocking. |
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CC @exercism/reviewers |
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This replaces ASCII art with links. Is this intentional? I expected images instead of links. |
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Well spottted @MatthijsBlom ! I have moved them inline. 👍 GitHub Preview ( and Gmail ) will still not show them due to site-wide SVG scrubbing due to the potential of JavaScript embedding within SVG. A separation of concern between data and executable seems difficult to maintain : see the historical sagas with Microsoft Word Documents, and also PDFs. An interesting related read on SVG delineation at mime-type. |
They do show up for me:
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Thanks -- they didn't show up in dark mode as the background is transparent and the image was not inverted with dark mode. ( They didn't work at all in the past. ) |
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The image not sticking out against dark background sounds like a potential problem for the website as well. |
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Happy to adjust. Are image backgrounds meant to be a solid colour or transparent ? I don't see any documentation for exercism-images . |
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Is the page CSS inaccessible to the SVG? It seems near-ideal to have these images have the same color as the surrounding text. Next best thing, I guess, would be to have the drawing color be the background inverted, or something like that. |
No and that's why I set the background transparent. You only have a single resource then which can be automatically adjusted on light/dark mode preference. @dem4ron : Does an Exercism CSS class exist for labelling an image as suitable for inversion in dark mode ? It seems they are not all inverted automatically in dark mode since some are not suitable for inversion. |
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So it seems the transparent background is correctly inverted on change of light/dark theme. It is the foreground SVG that is not inverted. If our markdown flavour supports pandoc attribute syntax, we could label the image as fully invertible : {.invertible}A compromise approach is to make the stroke on the image a middle gray which should retain enough contrast with the background switching but the foreground not. |
We don't support that IIRC |
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I wonder if we should keep some ASCII text. Might be better for accessibility. |
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Yeah, I don't think we want to lose the ascii text in the local (CLI) instructions. But it would be nice to have them on the website. I don't know how we do that :) |
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Can we put I couldn't seem to get an image fallback that is not an image ( ie ASCII Art ). The closest I could get to a negotiated content/semantic approach was to hide the ASCII Art inside of the |
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Most of the html tags would be escaped, so that'll not work I think |
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A few days ago I came across Typograms. Might be a cool idea, but perhaps not easy to implement. |
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Interesting @MatthijsBlom -- thanks ! 😀 Mermaid leans in a more declarative and semantic way if we're looking towards that approach. |
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