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From https://drafts.csswg.org/css-backgrounds-4/#background-clip "The background is painted within (clipped to) the intersection of the border box and the geometry of the text in the element and its in-flow and floated descendants" This change implements it in the following way: 1. Traverse the descendants of the element, collecting the Gfx::Path of glyphs into a vector. 2. The vector of collected paths is saved in the background painting command. 3. The painting commands executor uses the list of glyphs to paint a mask for background clipping. Co-authored-by: Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
85 lines
2.3 KiB
HTML
85 lines
2.3 KiB
HTML
<!DOCTYPE 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="viewport" content="width=device-width, initial-scale=1.0">
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<link rel="match" href="reference/css-background-clip-text-ref.html" />
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<title>Document</title>
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<style>
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p, .container {
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border: 0.8em darkviolet;
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border-style: dotted double;
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margin: 1em 0;
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padding: 1.4em;
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font: 900 1.2em sans-serif;
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text-decoration: underline;
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}
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.linear-gradient {
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background: linear-gradient(60deg, red, yellow, red, yellow, red);
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}
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.radial-gradient {
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background: radial-gradient(circle, red, yellow, red, yellow, red);
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}
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.conic-gradient {
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background: conic-gradient(red, yellow, red, yellow, red);
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}
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.image-background {
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background: url('./assets/car.png');
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}
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.border-box {
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background-clip: border-box;
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}
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.padding-box {
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background-clip: padding-box;
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}
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.content-box {
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background-clip: content-box;
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}
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.text {
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background-clip: text;
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color: rgb(0 0 0 / 20%);
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}
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.new-background {
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background: rgb(255 255 0 / 30%);
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}
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</style>
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</head>
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<body>
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<!-- Hack to make the test runner wait for the image to load -->
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<img src="./assets/car.png" />
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<p class="border-box linear-gradient">The background extends behind the border.</p>
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<p class="padding-box radial-gradient">
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The background extends to the inside edge of the border.
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</p>
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<p class="content-box conic-gradient">
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The background extends only to the edge of the content box.
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</p>
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<div class="text container linear-gradient">
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The background is clipped to the foreground text.
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<span>Some other text in a sub-element</span>
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</div>
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<div class="text container radial-gradient">
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The background is clipped to the foreground text.
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<span>Some other text in a sub-element</span>
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</div>
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<div class="text container conic-gradient">
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The background is clipped to the foreground text.
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<span>Some other text in a sub-element</span>
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</div>
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<div class="text container image-background">
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Testing text.
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<div>
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<div class="new-background" style="color: rgb(0 0 0 / 20%);">The is nested text that should still be clipped to the background</div>
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</div>
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</div>
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</body>
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</html>
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