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ea8d0304e9
While introducing clip and scroll frame trees, I made a mistake by assuming that the paintable tree includes boxes from nested navigables. Therefore, this comment in the code was incorrect, and clip/scroll frames were simply not assigned for iframes: // NOTE: We only need to refresh the scroll state for traversables // because they are responsible for tracking the state of all // nested navigables. As a result, anything with "overflow: scroll" is currently not scrollable inside an iframe This change fixes that by ensuring clip and scroll frames are assigned and refreshed for each navigable. To achieve this, I had to modify the display list building process to record a separate display list for each navigable. This is necessary because scroll frame ids are local to a navigable, making it impossible to call `DisplayList::apply_scroll_offsets()` on a display list that contains ids from multiple navigables.
37 lines
691 B
HTML
37 lines
691 B
HTML
<!DOCTYPE html>
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<style>
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iframe {
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width: 300px;
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height: 200px;
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border: 1px solid #ccc;
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}
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</style>
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<iframe
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srcdoc="
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<!DOCTYPE html>
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<style>
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* {
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scrollbar-width: none;
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}
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body {
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margin: 0;
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}
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#scrollable-box {
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width: 300px;
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height: 200px;
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overflow-y: scroll;
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border: 1px solid #ccc;
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box-sizing: border-box;
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}
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#box {
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width: 50px;
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height: 50px;
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background-color: magenta;
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}
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</style>
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<div id='scrollable-box'>
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<div id='box'></div>
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</div>
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"
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></iframe>
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