Commit graph

104 commits

Author SHA1 Message Date
Martin Robinson
ebfb5b1abb
libservo: Make Servo (and servoshell) more resilient against extreme sizes (#39204)
Make several changes which should address panics and inconsistent
behavior around attempts to set extreme sizes:

1. Limit the minimum size of the `RenderingContext` to 1 pixel by 1
   pixel. This should address problems where users of the API try to
   directly set the size to a zero or negative dimension. In addition,
   improve the documentation around `WebView::resize` to mention this.
2. Clamp values sent in the `WebViewDelegate::request_resize_to` method
   to be at least 1x1. This prevents Servo from sending nonsense values
   to embedders. Improve documentation in this method.
3. In servoshell:
    - More consistently clamp inner and outer window size values.
    - Clamp all resize values to the available screen size, so that
      large screen sizes aren't processed directly.

Testing: This change fixes an existing WPT and adds two new API tests.
Fixes: #36763.
Fixes: #36841.
Fixes: #39141.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
2025-09-09 12:51:30 +00:00
Oriol Brufau
d469e5e564
Add test for resizeTo(-1, -1) (#39211)
This test crashes in Servo, and passes on Gecko, Blink and Webkit.
The crash should be addressed by #39204.

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
2025-09-08 23:16:57 +00:00
Martin Robinson
9f4f598f44
script: Use HTMLElement.scrollParent to implement Element.scrollIntoView (#39144)
To find scrolling ancestors, we need to walk up the flat tree and only
consider the elements that are in the chain of containing block
ancestors of an element. `scrollParent` now does this so we can use it
to properly implement `scrollIntoView`.

Testing: There are WPT tests for this change.

---------

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
2025-09-07 21:44:11 +00:00
Martin Robinson
2c7866eb24
script/layout: Implement HTMLElement.scrollParent (#39110)
This new API allows getting the element which establishes an element's
scroll container. This will be used to properly implement
`scrollIntoView`. There is still work to do for this API and
`offsetParent` to properly handle ancestors which are
closed-shadow-hidden from the original query element.

In addition, fix an issue where inline boxes were establishing scrolling
containers (they shouldn't do that).

Testing: There are tests for this change.
Fixes: #39096.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
2025-09-03 18:52:15 +00:00
Shubham Gupta
d8ff9c7a08
layout: Use overflow: visible if overflow was propagated to viewport (#38598)
The `overflow-*` values of either the root element or the `<body>` get
propagated to the viewport. However, we were missing this part:
> The element from which the value is propagated must then have a used
`overflow` value of `visible`.

See https://drafts.csswg.org/css-overflow/#overflow-propagation

Testing:
 - `css/cssom-view/scrolling-quirks-vs-nonquirks.html`
 - `css/css-overflow/overflow-body-propagation-007.html`
 - `css/css-overflow/overflow-body-propagation-008.html`
 - `css/css-overflow/overflow-body-propagation-009.html`
 - `css/css-overflow/scrollable-overflow-with-nested-elements-001.html` 
 - `css/css-overflow/scrollable-overflow-with-nested-elements-002.html` 
 - `css/css-overflow/scrollable-overflow-with-nested-elements-003.html`
 - `css/css-overflow/scrollable-overflow-with-nested-elements-004.html`
 - `css/css-overflow/scrollbar-gutter-scroll-into-view.html`

Failures:
 - `css/css-overflow/overflow-body-propagation-010.html`
   Failing because of missing support for `contain: paint`.
- `css/css-overflow/scrollable-overflow-with-nested-elements-005.html`
Failing because of wrong `data-expected-height`, but correct
`data-expected-scroll-height` which is core of this PR.
`data-expected-height` can be dealt separately.


Fixes: #38248

---------

Signed-off-by: Shubham Gupta <shubham13297@gmail.com>
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
2025-08-20 14:21:51 +00:00
Oriol Brufau
141413d52e
layout: Improve sizing for inline SVG (#38603)
The metadata provided by usvg has unreliable sizes. Ignore it, and rely
on the `width`, `height` and `viewBox` attributes instead.

Note that inline SVG with a natural aspect ratio but no natural sizes
should stretch to the containing block. This is left for a follow-up.

Bumps Stylo to https://github.com/servo/stylo/pull/229

Testing: Improves several WPT.

---------

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
2025-08-12 12:45:15 +00:00
Mukilan Thiyagarajan
4c05758ded
script: support inline SVG by serializing the subtree (#38188)
This patch adds support for rendering static inline SVG documents in the
DOM tree by serializing the SVGElement's subtree and leveraging the
existing resvg based SVG stack for rendering. Serialiing the subtree is
necessary as resvg's tree representation (roxmltree) is immutable, so we
can't construct the tree incrementally.

Few other design choices here:
1. The `SVGSVGElement` is now treated as a replaced element and the
   layout code is responsible for plumbing the serialized SVG source
   (encoded as a base64 data: url) into the image cache, much like how
   background images are handled.
2. The serialization is done on the script thread after an initial
   layout pass. This is necessary because the serialization code asserts
that it is invoked from script thread i.e we can't call it from layout
   workers.
3. The serialized SVG data: url is cached to avoid recomputing it on
   subsequent layouts. The cache is invalidated when the SVGSVGElement's
   subtree is mutated.

The original SVGSVGElement code was behind the `dom_svg_enabled` pref.
This patch also removes the preference and make SVG support using resvg
available unconditionally.

Below is the analysis of the new test failures:

These tests use inline SVG but used to pass by accident.
They now fail because they contain SVG with no intrinsic
sizing which is not handled by resvg in a way that would
allows us to distinguish it from the sized case. The same
limitation applies to non-inline SVG.

 - /css/CSS2/positioning/absolute-replaced-width-003a.xht
 - /css/CSS2/positioning/absolute-replaced-width-003b.xht
 - /css/CSS2/positioning/absolute-replaced-width-003c.xht

These tests employ CSS styles in the HTML that
target the elements in inline SVG, which is not currently
supported.

-
/css/compositing/mix-blend-mode/mix-blend-mode-plus-lighter-svg-basic.html
 - /css/compositing/mix-blend-mode/mix-blend-mode-plus-lighter-svg.html

This is a tentative test that uses the unsupported 'border-shape' CSS
property. The ref uses SVG, so it used to pass accidentally. The ref
still doesn't render correctly since it also relies on styling SVG
elements using CSS classes in the HTML (instead of inline in SVG).

 - /css/css-borders/tentative/border-shape/border-shape-stroke.html

These tests use the attribute 'clip-path=circle(...)' in the
test, but this doesn't seem to work in resvg.

 - /css/css-masking/clip-path/clip-path-borderBox-1b.html
 - /css/css-masking/clip-path/clip-path-contentBox-1b.html
 - /css/css-masking/clip-path/clip-path-contentBox-1c.html
 - /css/css-masking/clip-path/clip-path-fillBox-1b.html
 - /css/css-masking/clip-path/clip-path-marginBox-1a.html
 - /css/css-masking/clip-path/clip-path-paddingBox-1b.html
 - /css/css-masking/clip-path/clip-path-strokeBox-1b.html
 - /css/css-masking/clip-path/clip-path-strokeBox-1c.html
 - /css/css-masking/clip-path/clip-path-viewBox-1a.html
 - /css/css-masking/clip-path/clip-path-viewBox-1b.html
 - /css/css-masking/clip-path/clip-path-viewBox-1d.html
 - /css/css-masking/clip-path/svg-clip-path-circle-offset.html
 - /css/css-masking/clip-path/svg-clip-path-ellipse-offset.html

Additionally, the below two tests use a `foreignObject` SVG element
which
embeds a html div fragment. This is also not supported by resvg.

 - /css/css-masking/clip-path/clip-path-viewBox-1d.html
 - /css/css-masking/clip-path/clip-path-fillBox-1b.html

The following test fails because of apparent pixel differences
between a circle rendered purely using CSS clip-path vs a circle
rendered in SVG using resvg.

 - /css/css-masking/clip-path/clip-path-contentBox-1c.html

These tests style the inline SVG elements using CSS in the HTML or
separate stylesheet. This is not supported by this implementation.

 - /css-transforms/document-styles/svg-document-styles-{001..004}.html
 - /css-transforms/document-styles/svg-document-styles-012.html
 - /css-transforms/external-styles/svg-external-styles-{001..004}.html
 - /css-transforms/external-styles/svg-external-styles-014.html

These tests seem like they should pass, but they fail because of what
seems like an anti-aliasing issue in the rendering engine. The
transformed element has a thin outline which is causing pixel difference
with the ref:

 - /css/css-transforms/group/svg-transform-group-008.html
 - /css/css-transforms/group/svg-transform-group-009.html
 - /css/css-transforms/group/svg-transform-nested-009.html
 - /css/css-transforms/group/svg-transform-nested-013.html
 - /css/css-transforms/group/svg-transform-nested-014.html
 - /css/css-transforms/group/svg-transform-nested-018.html
 - /css/css-transforms/group/svg-transform-nested-019.html
 - /css/css-transforms/group/svg-transform-nested-008.html

The below tests fail because resvg is calculating the wrong size for the
'rect' inside the SVG. The dimensions of the SVG are established via the
CSS in the HTML, so it seems resvg is using incorrect coordinates for
the children of the svg when explict width/height are not specified in
the root svg element.

 - /css/css-transforms/group/svg-transform-group-011.html
 - /css/css-transforms/group/svg-transform-nested-021.html
 - /css/css-transforms/group/svg-transform-nested-029.html

All these tests use an SVG that doesn't have width nor height attributes
and this causes resvg to use incorrect coordinates for the SVG's
children. In addition, the following tests use the CSS syntax for
transforms inside the SVG (using style attribute) which is not supported
by resvg (it only supports the SVG 1.1 transform syntax).

 - /css/css-transforms/inline-styles/svg-inline-styles-{001..004}.html
 - /css/css-transforms/inline-styles/svg-inline-styles-012.html

In the case of these four tests, the `style` attribute specifies an
invalid transform, but resvg doesn't fallback to the transform specified
via the `transform`  attribute on the same element.

 - /css/css-transforms/inline-styles/svg-inline-styles-005.html
 - /css/css-transforms/inline-styles/svg-inline-styles-006.html
 - /css/css-transforms/inline-styles/svg-inline-styles-010.html
 - /css/css-transforms/inline-styles/svg-inline-styles-013.html

The following test fails because of the lack of width/height in SVG as
described above but it also exposes gaps in our CSS tranform
implementation.

 - /css/css-transforms/preserve3d-and-filter-with-perspective.html

These tests failure because resvg doesn't handle the SVG without
explicit width and height, but specified via CSS in the HTML. In
addition, there are pixel differences between the ref due to
antialiasing issues.

 - /css/css-transforms/matrix/svg-matrix-{005...008}.html
 - /css/css-transforms/matrix/svg-matrix-010.html
 - /css/css-transforms/matrix/svg-matrix-012.html
 - /css/css-transforms/matrix/svg-matrix-{015..069}.html
 - /css/css-transforms/rotate/svg-rotate-angle-45-001.html
 - /css/css-transforms/rotate/svg-rotate-angle-45-011.html
 - /css/css-transforms/rotate/svg-rotate-angle-45-022.html
 - /css/css-transforms/scale/svg-scale-006.html
 - /css/css-transforms/scale/svg-scale-007.html

These tests seem to be failing due to some sort of antialiasing issue,
where a transformed SVG element has a thin border that causes pixel
differences compared to the solid colored reference.

 - /css/css-transforms/skewX/svg-skewx-001.html
 - /css/css-transforms/skewX/svg-skewx-006.html
 - /css/css-transforms/skewX/svg-skewx-011.html
 - /css/css-transforms/skewX/svg-skewx-016.html
 - /css/css-transforms/skewX/svg-skewx-021.html
 - /css/css-transforms/skewX/svg-skewxy-001.html
 - /css/css-transforms/skewY/svg-skewy-001.html
 - /css/css-transforms/skewY/svg-skewy-006.html
 - /css/css-transforms/skewY/svg-skewy-011.html
 - /css/css-transforms/skewY/svg-skewy-016.html
 - /css/css-transforms/skewY/svg-skewy-021.html

These tests specify several SVG attributes such as transform,
vector-effect etc via CSS in the HTML (rather than inline in SVG). The
current implementation doesn't support this.

 - /css/css-transforms/transform-box/stroke-box-mutation-001.html
 - /css/css-transforms/transform-box/stroke-box-mutation-002.html
 - /css/css-transforms/transform-box/stroke-box-mutation-003.html
 - /css/css-transforms/transform-box/stroke-box-mutation-004.html
 - /css/css-transforms/transform-box/svgbox-stroke-box-002.html
 - /css/css-transforms/transform-box/svgbox-stroke-box-003.html
 - /css/css-transforms/transform-box/svgbox-stroke-box-004.html
 - /css/css-transforms/transform-box/svgbox-stroke-box-005.html

These tests depend on 'transform-origin' specified on an element inside
an SVG, but this transform is influenced by the 'tranform-box' set via
CSS in the HTML itself (not the SVG). The current implementation doesn't
support styling the SVG using document styles, so these tests just fail.

- /css/css-transforms/transform-origin/svg-origin-relative-length-*.html

These tests check the fallback behaviour when invalid syntax is
encountered in the 'transform-origin' value. resvg doesn't correctly
fallback to 0,0 causing the tests to fail.

-
/css/css-transforms/transform-origin/svg-origin-relative-length-invalid-001.html
-
/css/css-transforms/transform-origin/svg-origin-relative-length-invalid-002.html
-
/css/css-transforms/transform-origin/svg-origin-relative-length-invalid-003.html
-
/css/css-transforms/transform-origin/svg-origin-relative-length-invalid-004.html

These tests use unimplemented Canvas APIs like 'beginLayer' and
the 'CanvasFilter' constructor and hence fail at runtime.

-
/html/canvas/element/filters/2d.filter.canvasFilterObject.gaussianBlur.tentative.html
-
/html/canvas/element/filters/2d.filter.layers.gaussianBlur.tentative.html
-
/html/canvas/element/layers/2d.layer.anisotropic-blur.isotropic.tentative.html
-
/html/canvas/element/layers/2d.layer.anisotropic-blur.mostly-x.tentative.html
-
/html/canvas/element/layers/2d.layer.anisotropic-blur.mostly-y.tentative.html
-
/html/canvas/element/layers/2d.layer.anisotropic-blur.x-only.tentative.html
-
/html/canvas/element/layers/2d.layer.anisotropic-blur.y-only.tentative.html
-
/html/canvas/element/layers/2d.layer.css-filters.blur-and-shadow.tentative.html
 - /html/canvas/element/layers/2d.layer.css-filters.blur.tentative.html
- /html/canvas/element/layers/2d.layer.css-filters.shadow.tentative.html
 - /html/canvas/element/layers/2d.layer.ctm.layer-filter.tentative.html
-
/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.dropShadow.tentative.html
-
/html/canvas/offscreen/filters/2d.filter.canvasFilterObject.gaussianBlur.tentative.html
-
/html/canvas/offscreen/filters/2d.filter.layers.dropShadow.tentative.html
-
/html/canvas/offscreen/filters/2d.filter.layers.gaussianBlur.tentative.html
-
/html/canvas/offscreen/layers/2d.layer.anisotropic-blur.isotropic.tentative.html
-
/html/canvas/offscreen/layers/2d.layer.anisotropic-blur.mostly-x.tentative.html
-
/html/canvas/offscreen/layers/2d.layer.anisotropic-blur.mostly-y.tentative.html
-
/html/canvas/offscreen/layers/2d.layer.anisotropic-blur.x-only.tentative.html
-
/html/canvas/offscreen/layers/2d.layer.anisotropic-blur.y-only.tentative.html
-
/html/canvas/offscreen/layers/2d.layer.css-filters.blur-and-shadow.tentative.html
- /html/canvas/offscreen/layers/2d.layer.css-filters.blur.tentative.html
-
/html/canvas/offscreen/layers/2d.layer.css-filters.shadow.tentative.html
- /html/canvas/offscreen/layers/2d.layer.ctm.layer-filter.tentative.html

These tests fail because resvg doesn't seem to honour the 'translate'
CSS property specified on an SVG element using an inline 'style'
attribute.

 - /css/css-transforms/translate/svg-translate-with-units.html
-
/css/css-transforms/translate/translate-and-transform-attribute-in-svg.html
-
/css/css-transforms/translate/translate-and-transform-css-property-in-svg.html
 - /css/css-transforms/translate/translate-in-svg.html

These tests seem to fail due to the filter effect implementation in
resvg either not being complete or spec compliant.

 - /css/filter-effects/feconvolve-divisor.html
 - /css/filter-effects/feconvolve-region-001.html
 - /css/filter-effects/feconvolve-region-002.html
 - /css/filter-effects/filter-subregion-01.html
 - /css/filter-effects/svg-feimage-002.html
 - /css/filter-effects/svg-feimage-003.html
 - /css/filter-effects/svg-feimage-004.html
 - /css/filter-effects/svg-feoffset-001.html

The test /css/filter-effects/svg-feimage-004.html should ideally PASS
but currently fails because we don't propagate height/width set using
CSS in HTML element to the root SVG, so resvg uses the wrong dimensions
when rendering the children of the SVG.

These failures are due to deficienies in our current implementation
i.e we don't support styling SVG elements using CSS in HTML.

-
/css/css-transforms/gradientTransform/svg-gradientTransform-combination-001.html
 - /css/selectors/sharing-in-svg-use.html

The below test fails as our current implementation relies on resvg to
tell us the intrinsic ratio of the SVG, but this doesn't always work
correctly.

 - /css/css-sizing/svg-intrinsic-size-005.html

This failure is due to lack of proper fallback to no-op transform in
resvg when the `rotate()` syntax is specified with an invalid list e.g
`rotate(90,)`.

 - /css/css-transforms/rotate/svg-rotate-3args-invalid-002.html

This test only passes in CI and based on the raw log output, it seems
that no text inside the SVG is rendered in the CI. This could be an font
stack related issue.

 - /css/css-display/display-contents-svg-elements.html

This test asserts that the CSP blocks loads triggered using `use`
elements in SVG. It used to TIMEOUT as without inline SVG support, no
CSP violation event was triggered. It fails now since the event is now
triggered for the load of the SVG itself (our current implementation
loads inline SVGs as serialized base64 data: urls). This doesn't match
the blocked URL in the use element though.

 - /content-security-policy/img-src/svg-use-blocked.tentative.html

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>

Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>
2025-08-11 11:07:59 +00:00
Servo WPT Sync
86c37a380b
Sync WPT with upstream (10-08-2025) (#38583)
Automated downstream sync of changes from upstream as of 10-08-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-08-10 11:09:48 +00:00
Martin Robinson
4257db643b
Revert "Include the scrollable overflow of a child box if either its parent or child has overflow: visible (#38443)" (#38546)
This reverts commit dcb90bb85e.

This broke scrollable overflow calculation in the following case:

```
<div id="foo" style="width: 200px; height: 200px; outline: solid; overflow: auto;">
    <div style="height: 5000px; background: pink;">hello</div>
</div>
```

In this case the overflow is propagating through the `overflow: auto`
`<div>` and into the parents. When dumping the flow tree I see the root
node being 5000 pixels tall. It's unclear why this change didn't break
any tests, so it's likely that we need to add a test for this case.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
2025-08-08 13:37:14 +00:00
Abdelrahman Hossam
17a269a8ad
script: Implement scrollIntoView (#38230)
This is an implementation for `scrollIntoView`. For now, it is called
when a certain element gains focus.

Testing: Existing WPT tests
Fixes: #24059

Signed-off-by: abdelrahman1234567 <abdelrahman.hossameldin.awadalla@huawei.com>
2025-08-06 08:08:25 +00:00
Shubham Gupta
dcb90bb85e
Include the scrollable overflow of a child box if either its parent or child has overflow: visible (#38443)
Include the scrollable overflow of a child box if either its parent or
child has `overflow: visible`

**Issue**: For the blocks having property `overflow:hidden`, their
scroll overflow is not added to parent's scroll overflow.
Causing unable to scroll the parent block aka `Root` block in our Issue
#38248 .

**Testing**: css/cssom-view/scrolling-quirks-vs-nonquirks.html
**Fixes**: #38248

Signed-off-by: Shubham Gupta <shubham13297@gmail.com>
2025-08-06 07:46:54 +00:00
Servo WPT Sync
fed1953198
Sync WPT with upstream (03-08-2025) (#38434)
Automated downstream sync of changes from upstream as of 03-08-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-08-03 01:48:15 +00:00
Jo Steven Novaryo
900dd8d191
layout: Consider transform for bounding box queries (#37871)
The recent changes that cached the Scroll Tree present an opportunity to
calculate the queries that consider transform and scroll (dubbed as post
composite queries) accurately.

This PR propose a solution for this calculation by noting the lowest
scroll tree nodes that would affect a fragment. To do this, each
fragment would store a new attribute `spatial_tree_node` -- scroll tree
node id that we could use for the query. This referencing is considered
because the scroll tree node construction is managed by the fragment
itself. Therefore it would ease the managing the possibly stale
reference and future query cache invalidation considering the
development of incremental layout.

The bounding box query then could transform the bounding content rect of
a fragment using the computed current transformation matrix.

Fixes: https://github.com/servo/servo/issues/35768
Testing: Existing and new WPT

---------

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>
Signed-off-by: Jo Steven Novaryo <jo.steven.novaryo@huawei.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
2025-07-30 08:13:54 +00:00
Servo WPT Sync
772c84633e
Sync WPT with upstream (20-07-2025) (#38178)
Automated downstream sync of changes from upstream as of 20-07-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-07-20 15:11:10 +00:00
Servo WPT Sync
84f0cd5801
Sync WPT with upstream (10-07-2025) (#37974)
Automated downstream sync of changes from upstream as of 10-07-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-07-10 03:09:13 +00:00
Servo WPT Sync
9a0f2be162
Sync WPT with upstream (29-06-2025) (#37774)
Automated downstream sync of changes from upstream as of 29-06-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-06-29 01:47:33 +00:00
Oriol Brufau
c67b0ab538
Fix scrollWidthHeight-negative-margin-002.html (#37721)
Since we don't support `writing-mode` yet, we got different testcases
with the same title, some passing and some failing. So we had to expect
both PASS and FAIL, making the test useless to detect regressions.

This changes the test to only generate testcases for supported values of
`writing-mode`.

Testing: This is just a test change.

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
2025-06-26 12:08:30 +00:00
Servo WPT Sync
2b209449b5
Sync WPT with upstream (22-06-2025) (#37606)
Automated downstream sync of changes from upstream as of 22-06-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-06-22 01:41:56 +00:00
Martin Robinson
3774ef00d4
script: Get scroll offsets from layout (#37509)
No longer store scroll offsets for elements in the DOM. Instead
consistently get and set these in layout's `ScrollTree`. This more
consistently requires layout to run when querying scroll offsets, which
ensures that they are up-to-date and properly bounded by scrollable
overflow area.

Testing: This causes several WPT tests to start passing, and one to
start
failing. In the case of
`/shadow-dom/scroll-to-the-fragment-in-shadow-tree.html`, I believe the
issue
is that we don't properly handle scrolling and shadow DOM elements.
Before, the
faulty scrolling was hiding this issue.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
2025-06-20 09:39:12 +00:00
Martin Robinson
0f61361e27
layout: Unify scrollable overflow calculation and include position: absolute (#37475)
Previously, layout was handling scrollable overflow and srolling area
calculation separately, only excluding the "unreachable scrollable
overflow region" at the last step. In addition, `position: absolute` was
not included in scrollable overflow calculation.

This change combines the two concepts into a single scrollable overflow
calculation and starts taking into account `position: absolute`.
Finally, `BoxFragment::scrollable_overflow_for_parent` is converted to
use early returns which reduces the amount of indentation.

Fixes #35928.
Fixes #37204.
Testing: This causes some WPT test to pass, but also two to start
failing:
- `/css/css-masking/clip-path/clip-path-fixed-scroll.html`: This seems
to fail
because script is scrolling past the boundaries of the document. This is
a
failure that was uncovered by the fixed element now being added to the
   page's scroll area.
- `/css/css-overflow/overflow-outside-padding.html`: One test has
started to fail
here because now the absolutely positioned element is included in the
scroll area,
and I think there is an issue with how we are placing RTL items with
negative margins.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
2025-06-16 11:30:31 +00:00
Servo WPT Sync
a7e9df0fef
Sync WPT with upstream (13-06-2025) (#37436)
Automated downstream sync of changes from upstream as of 13-06-2025
[no-wpt-sync]

---------

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
2025-06-13 14:15:36 +00:00
Servo WPT Sync
bd6639aadb
Sync WPT with upstream (08-06-2025) (#37326)
Automated downstream sync of changes from upstream as of 08-06-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-06-08 01:44:37 +00:00
Servo WPT Sync
6cd44061d7
Sync WPT with upstream (11-05-2025) (#36954)
Automated downstream sync of changes from upstream as of 11-05-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-05-11 01:41:53 +00:00
Jimmy D. Buckets
1f6050f931
Implement document.scrollingElement (#35994)
<!-- Please describe your changes on the following line: -->
This implements `document.scrollingElement`
(https://drafts.csswg.org/cssom-view/#dom-document-scrollingelement).

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by
`[X]` when the step is complete, and replace `___` with appropriate
data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #35700
- [x] There are tests for these changes

<!-- Also, please make sure that "Allow edits from maintainers" checkbox
is checked, so that we can help you if you get stuck somewhere along the
way.-->

<!-- Pull requests that do not address these steps are welcome, but they
will require additional verification as part of the review process. -->

---------

Signed-off-by: JimmyDdotEXE <50691404+JimmyDdotEXE@users.noreply.github.com>
2025-05-05 12:50:42 +00:00
Steven Novaryo
bd6928f3dc
layout: Account for transform in scrollable overflow (#36138)
In the scrollable overflow calcutation, apply CSS transforms to boxes
and scrollable overflow of the descendant. Clip unreachable scrollable
overflow according to it's block start and inline start scrolling
direction. And, renamed `Fragment::scrolling_overflow` to
`Fragment::scrolling_overflow_for_parent` as it was calculating the
scrolling overflow contribution from a child.

Add several WPT tests, testing the transform interaction `rotate`,
`scale`, and `skew` with scrollable overflow. There are several WPT test
that are testing the interaction that not expected from current browsers
implementation according to the spec.

Testing: Existing and new WPT. 
Fixes: #36031

---------

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>
2025-04-29 09:37:27 +00:00
Martin Robinson
a62f0eaf0a
layout: Use box tree Fragments for offset parent queries (#36681)
This change switches `offsetParent`, `offsetLeft`, etc queries to use
the BoxTree fragments instead of walking the entire fragment tree. In
addition, fragments are stored for columns and colgroups. In general,
this greatly simplifies the flow of the query and prevents having to do
expensive tree walks.

Testing: This change is covered by newly passing WPT tests and three new
failures:

 - /css/filter-effects/backdrop-filter-edge-clipping-2.html
 - /css/filter-effects/backdrop-filter-edge-mirror.html
 - /css/filter-effects/backdrop-filter-edge-pixels-2.html

These failures are actually progressions, because now the references
start
to render properly whereas before they did not.

Fixes: This is part of #36525 and #36665.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
2025-04-25 20:25:10 +00:00
Martin Robinson
b63a1818c4
layout: Implement node geometry queries against BoxTree's Fragment (#36663)
This is a followup to #36629, continuing to implement script-based
layout queries  using the `Fragment`s attached to the `BoxTree`. In this
change, geometry queris (apart from parent offset) are calculated using
`Fragment`s hanging of the `BoxTree`.

In order to make this work, all `Fragment`s for inlines split by blocks,
need to be accessible in the `BoxTree`. This required some changes to
the way that box tree items were stored in DOM `BoxSlot`s. Now every
inline level item can have more than a single `BoxTree` item. These are
carefully collected by the `InlineFormattingContextBuilder` -- currently
a bit fragile, but with more documentation.

Testing: There are tests for these changes.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
2025-04-25 13:38:05 +00:00
Servo WPT Sync
0c045fc247
Sync WPT with upstream (13-04-2025) (#36488)
Automated downstream sync of changes from upstream as of 13-04-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-04-13 02:52:15 +00:00
Oriol Brufau
e1213f9dbc
Enable layout_grid_enabled pref for all tests (#36316)
This is part of #36315
Testing: This improves several tests that rely on this feature

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
2025-04-03 18:48:05 +00:00
Martin Robinson
b5c8164e99
layout: Simplify and generalize the usage of pseudo-elements (#36202)
- Remove the last remaining Servo-specific PseudoElement enum from
  layout. This was made to select `::before` and `::after` (both eager
  pseudo-elements), but now `traverse_pseudo_element` is called
  `traverse_eager_pseudo_element` and should work on any eager pseudo
  element.
- Expose a single way of getting psuedo-element variants of
  ThreadSafeLayoutElement in the Layout DOM, which returns `None` when
  the pseudo-element doesn't apply (not defined for eager
  pseudo-elements or when trying to get `<details>` related
  pseudo-elements on elements that they don't apply to).
- Ensure that NodeAndStyleInfo always refers to a node. This is done by
  making sure that anonymous boxes are all associated with their
  originating node.

These changes are prepatory work for implementation of the `::marker`
pseudo-element as well as ensuring that all anonymous boxes can be
cached into the box tree eventually.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
2025-03-29 12:41:04 +00:00
Simon Wülker
6be7612d16
script: Implement Range::getClientRects and Range::getBoundingClientRect (#35993)
* Add doc comments to boundary point

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Allow querying content box of text fragments

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Implement Range::getBoundingClientRect

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Update WPT expectations

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
2025-03-19 08:33:11 +00:00
Servo WPT Sync
66583ce3c9
Update web-platform-tests to revision b'c23b0ad587af296087067b48a2f2101233589a8f' (#35869)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-03-09 01:39:16 +00:00
Servo WPT Sync
5ba9cfe809
Update web-platform-tests to revision b'fc557e215e11221c91de4f283539725ef2f35928' (#35741)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2025-03-02 12:18:38 +00:00
batu_hoang
8c46749740
Implement overflow:clip (#35103)
* Implement overflow clip

Signed-off-by: longvatrong111 <longvatrong111@gmail.com>

* Modify test ini for overflow clip

Signed-off-by: longvatrong111 <longvatrong111@gmail.com>

* Update overflow_clip_rect calculation

Signed-off-by: batu_hoang <longvatrong111@gmail.com>

* Update overflow-clip-margin border-radius according to shadow box

Signed-off-by: longvatrong111 <longvatrong111@gmail.com>

---------

Signed-off-by: longvatrong111 <longvatrong111@gmail.com>
Signed-off-by: batu_hoang <longvatrong111@gmail.com>
Signed-off-by: batu_hoang <55729155+longvatrong111@users.noreply.github.com>
2025-02-12 07:02:06 +00:00
Oriol Brufau
9b388da9cb
layout: Fix clientWidth & friends for tables (#35096)
`clientWidth` shouldn't include the borders of a box. The problem was
that we pretend that table wrapper boxes have the border specified on
the table element, even though this border actually applies to the
table grid box instead of the table wrapper box.

Therefore, `clientWidth` was wrong when it subtracted the borders.
This patch fixes it.

Signed-off-by: Oriol Brufau <obrufau@igalia.com>
2025-01-20 17:18:20 +00:00
Oriol Brufau
25a94efcdf
layout: Improve sizing of tables in collapsed-borders mode (#34932)
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
2025-01-10 23:22:32 +00:00
Martin Robinson
0a01d06968
layout: Allow same ScriptThread <iframe>s to be resized synchronously (#34656)
Post layout, when a `Window` has all of the new `<iframe>` sizes, size
any `Window`s for `Pipeline`s in the same `ScriptThread` synchronously.
This ensures that when laying out from the outermost frame to the
innermost frames, the frames sizes are set properly.

There is still an issue where a non-same-`ScriptThread` `<iframe>` sits
in between two `<iframe>`s of the same origin. According to the
specification these frames should all be synchrnously laid out --
something quite difficult in Servo. This is issue #34655.

This is the first change in a series of changes to improve the
consistency of `<iframe>` loading and sizing.

Fixes #14719.
Fixes #24569.
Fixes #24571.
Fixes #25269.
Fixes #25275.
Fixes #25285.
Fixes #30571.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
2024-12-17 09:37:52 +00:00
Servo WPT Sync
a37a9f68b8
Update web-platform-tests to revision b'38623a53d6598cb7aab4be8a810102b352a652df' (#34622)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2024-12-15 03:52:07 +00:00
Servo WPT Sync
b3977e7f6c
Update web-platform-tests to revision b'7b6f075f0ec3c52d92c61fb9f35ce0ec927b17b2' (#34525)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2024-12-08 10:45:12 +00:00
Servo WPT Sync
c3a58f9c16
Update web-platform-tests to revision b'bf49dde84c5f05613115d6146d109f0ec3900694' (#34483)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2024-12-05 05:23:07 +00:00
Simon Wülker
f3ad078358
Include non-shadowdom children of shadow hosts in style calculation (#34298)
* Include non-shadowdom children of shadow hosts in style calculation

This was previously causing crashes because the layout nodes
of those children would never be assigned style data by stylo.

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Update WPT expectations

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
2024-11-20 19:28:35 +00:00
Josh Matthews
910e8dc89f
Enable Shadow DOM for tests (#34299)
* Enable shadowdom implementation in all tests.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

* Update test expectations.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
2024-11-20 05:57:50 +00:00
Nico Burns
6955950948
Fix offsetLeft/offsetTop to match major browsers (#32761)
* Fix offsetLeft/offsetTop to match major browsers

See: https://github.com/w3c/csswg-drafts/issues/10549
Signed-off-by: Nico Burns <nico@nicoburns.com>

Fix crash when <html> element is absolutely positioned

Signed-off-by: Nico Burns <nico@nicoburns.com>

* Update test expectations

Signed-off-by: Nico Burns <nico@nicoburns.com>

* Update test expectations again

Signed-off-by: Nico Burns <nico@nicoburns.com>

* Use PhysicalRect and PhysicalVec types

Signed-off-by: Nico Burns <nico@nicoburns.com>

* Use is_some_and

Signed-off-by: Nico Burns <nico@nicoburns.com>

* clippy

Signed-off-by: Nico Burns <nico@nicoburns.com>

* Apply comment changes from code review

Co-authored-by: Oriol Brufau <obrufau@igalia.com>
Signed-off-by: Nico Burns <nico@nicoburns.com>

---------

Signed-off-by: Nico Burns <nico@nicoburns.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
2024-11-16 15:28:38 +00:00
Servo WPT Sync
4da378a987
Update web-platform-tests to revision b'8686b7a6d288d3b2c22b5ddb5a21773619b22b85' (#34202)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2024-11-10 01:42:44 +00:00
chickenleaf
257f4b84db
DOMRectList interface implementation (#34025)
* rechecking all file changes and additions

Signed-off-by: L Ashwin B <lashwinib@gmail.com>

* added comments with specification links

Signed-off-by: L Ashwin B <lashwinib@gmail.com>

* added space before the links

Signed-off-by: L Ashwin B <lashwinib@gmail.com>

* modified the doc link format

Signed-off-by: L Ashwin B <lashwinib@gmail.com>

* suggested changes + updated interfaces.https.html + updated passing test expectations

Signed-off-by: L Ashwin B <lashwinib@gmail.com>

* needed to do an update-manifest

Signed-off-by: L Ashwin B <lashwinib@gmail.com>

* updated the idlharness.any.html expectations

Signed-off-by: L Ashwin B <lashwinib@gmail.com>

---------

Signed-off-by: L Ashwin B <lashwinib@gmail.com>
2024-11-01 15:58:30 +00:00
Servo WPT Sync
d0d02cd56c
Update web-platform-tests to revision b'5a9d9349a312e12a950d5f4703cd41609a06f242' (#33923)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2024-10-20 01:33:44 +00:00
Servo WPT Sync
76776bf082
Update web-platform-tests to revision b'c7076ab2397dd3dcf0bb93dc304d05be04cd2a47' (#33826)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2024-10-13 13:52:51 +00:00
Servo WPT Sync
f8933a5735
Sync WPT with upstream (06-10-2024) (#33668)
* Update web-platform-tests to revision b'9448ab31f11e671a8b069e3407b4f6279bea698e'

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>

* Remove intermittent failure.

Signed-off-by: Josh Matthews <josh@joshmatthews.net>

---------

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
2024-10-06 02:45:43 +00:00
Servo WPT Sync
013473f1d5
Sync WPT with upstream (29-09-2024) (#33580)
* Update web-platform-tests to revision b'16d17064d2122cfa83b22f8bab32c96e6514c034'

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>

* Update big5-decode-csbig5.html.ini

Signed-off-by: Samson <16504129+sagudev@users.noreply.github.com>

---------

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
Signed-off-by: Samson <16504129+sagudev@users.noreply.github.com>
Co-authored-by: Samson <16504129+sagudev@users.noreply.github.com>
2024-09-29 07:54:33 +00:00
Servo WPT Sync
8276673bae
Update web-platform-tests to revision b'8e164c249d2b93a4234a2710a5e2cc5a16fab499' (#33515)
Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
2024-09-22 01:24:38 +00:00