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LibWeb: Support transforms, stroking, gradients, etc for SVG <text>

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This makes use of the new Gfx::Path::text() to handle SVG text elements,
with this text is just a regular path, and can be manipulated like any
other graphics element.

This removes the SVGTextPaintable and makes both <text> and geometry
elements use a new (shared) SVGPathPaintable. This is identical to the
old SVGGeometryPaintable. This simplifies painting as once something is
resolved to a Gfx::Path, the painting logic is the same.
This commit is contained in:
MacDue 2023-11-04 21:31:35 +00:00 • committed by Alexander Kalenik
parent 50d33f79fa
commit 4c5d48f861
30 changed files with 144 additions and 180 deletions
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Tests/LibWeb/Ref/reference/images/svg-text-effects-ref.png Normal file
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Tests/LibWeb/Ref/reference/svg-text-effects-ref.html Normal file
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@ -0,0 +1,15 @@
<style>
* {
margin: 0;
}
body {
background-color: white;
}
</style>
<!-- To rebase:
1. Open svg-text-effects.html in Ladybird
2. Resize the window till there's x and y scrollbars
3. Right click > "Take Full Screenshot"
4. Update the image below:
-->
<img src="./images/svg-text-effects-ref.png">

31
Tests/LibWeb/Ref/svg-text-effects.html Normal file
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<link rel="match" href="reference/svg-text-effects-ref.html" />
<svg height="200" width="350" xmlns="http://www.w3.org/2000/svg">
<style>
.text {
font: italic 40px serif;
}
.thakis {
font: bold 70px sans-serif;
}
body {
background-color: white;
}
</style>
<linearGradient id="gradient">
<stop offset="0%" stop-color="rgba(255, 0, 0, 1)"/>
<stop offset="10%" stop-color="rgba(255, 154, 0, 1)"/>
<stop offset="20%" stop-color="rgba(208, 222, 33, 1)"/>
<stop offset="30%" stop-color="rgba(79, 220, 74, 1)"/>
<stop offset="40%" stop-color="rgba(63, 218, 216, 1)"/>
<stop offset="50%" stop-color="rgba(47, 201, 226, 1)"/>
<stop offset="60%" stop-color="rgba(28, 127, 238, 1)"/>
<stop offset="70%" stop-color="rgba(95, 21, 242, 1)"/>
<stop offset="80%" stop-color="rgba(186, 12, 248, 1)"/>
<stop offset="90%" stop-color="rgba(251, 7, 217, 1)"/>
<stop offset="100%" stop-color="rgba(255, 0, 0, 1)"/>
</linearGradient>
<text x="20" y="105" class="text" transform="rotate(-10 50 100)">There you go :^)</text>
<text x="90" y="220" class="thakis" fill="url(#gradient)" transform="rotate(-10 50 100) skewY(-10)">thakis</text>
</svg>