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compositor: Request reflow when doing a page zooming (#38166)

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Request a reflow when doing page zoom and only modify the scaling of the
WebView scene after the first root pipeline display list with the new
zoom is ready. In addition:

  - store zoom limits in `Scale` types
  - send `ViewportDetails` along with the display list so that we can
    detect when the root pipeline scale is ready.

Testing: This is quite hard to test as it requires verification that
contents are zoomed appropriately at the right time.
Fixes: #38091.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-07-29 12:04:37 +02:00 • committed by GitHub
parent 3d2f0d1be5
commit 8d5faa9bf9
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10 changed files with 111 additions and 44 deletions
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12
components/layout/display_list/background.rs
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@ -65,7 +65,11 @@ impl<'a> BackgroundPainter<'a> {
if &BackgroundAttachment::Fixed ==
get_cyclic(&background.background_attachment.0, layer_index)
{
return builder.compositor_info.viewport_size.into();
return builder
.compositor_info
.viewport_details
.layout_size()
.into();
}
match get_cyclic(&background.background_clip.0, layer_index) {
@ -149,7 +153,11 @@ impl<'a> BackgroundPainter<'a> {
Origin::PaddingBox => *fragment_builder.padding_rect(),
Origin::BorderBox => fragment_builder.border_rect,
},
BackgroundAttachment::Fixed => builder.compositor_info.viewport_size.into(),
BackgroundAttachment::Fixed => builder
.compositor_info
.viewport_details
.layout_size()
.into(),
}
}
}