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SVGs are rendered with subpixel precision. As such it can happen that paths are rendered with less than 1px width or height and that they can have a bounding box thinner than 1px. Due to an optimization such paths were ignored when painting because their bounding box was incorrectly calculated to be empty. As a result horizontal or vertical lines inside SVGs were missing if: * The SVG is displayed at viewbox size but the lines are defined with less than 1px. * The SVG contians 1px-thin lines, but is displayed at a size smaller than viewbox size. To prevent this, the bounding box of the path is now enlarged to contain all pixels that are partially affected.
58 lines
2.1 KiB
HTML
58 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<link rel="match" href="../expected/svg-paths-cardinal-directions-less-than-1px-wide-ref.html"/>
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<style>
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img, svg {
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width: 24px;
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height: 24px;
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}
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</style>
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</head>
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<body>
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<!-- horizontal between two pixels -->
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<path d="M4 23.5h40v1h-40z" fill="currentColor"/>
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</svg>
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<path d="M4 24h40" stroke="currentColor" stroke-width="1"/>
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</svg>
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<line x1="4" y1="24" x2="44" y2="24" stroke="currentColor" stroke-width="1"/>
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</svg>
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<br>
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<!-- horizontal on a single pixel -->
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<path d="M4 24h40v1h-40z" fill="currentColor"/>
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</svg>
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<path d="M4 24.5h40" stroke="currentColor" stroke-width="1"/>
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</svg>
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<line x1="4" y1="24.5" x2="44" y2="24.5" stroke="currentColor" stroke-width="1"/>
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</svg>
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<br>
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<!-- vertical between two pixels -->
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<path d="M23.5 4v40h1v-40z" fill="currentColor"/>
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</svg>
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<path d="M24 4v40" stroke="currentColor" stroke-width="1"/>
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</svg>
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<line x1="24" y1="4" x2="24" y2="44" stroke="currentColor" stroke-width="1"/>
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</svg>
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<br>
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<!-- vertical on a single pixel -->
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<path d="M24 4v40h1v-40z" fill="currentColor"/>
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</svg>
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<path d="M24.5 4v40" stroke="currentColor" stroke-width="1"/>
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</svg>
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<svg viewBox="0 0 48 48" xmlns="http://www.w3.org/2000/svg">
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<line x1="24.5" y1="4" x2="24.5" y2="44" stroke="currentColor" stroke-width="1"/>
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</svg>
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</body>
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</html>
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