HTMLImageElement was missing the dimension source attribute, as step 9
from
[here](https://html.spec.whatwg.org/multipage/images.html#updating-the-source-set)
wasn't implemented. This meant that for an element like this:
```html
<picture>
<source media="(min-width: 1000px)"
srcset=""
width="84" height="29">
<img
src=""
width="25" height="25" alt="Wikimedia Foundation" lang="en" loading="lazy">
</picture>
```
The `width` and `height` attributes of the source tag were being
ignored. This broke stuff like these icons on the main page of
Wikipedia.
**Original:**
<img width="2252" height="229" alt="image"
src="https://github.com/user-attachments/assets/fa3fdd9d-5f91-43d4-bc9d-784b0a836d44"
/>
**Fixed:**
<img width="2252" height="229" alt="image"
src="https://github.com/user-attachments/assets/6f4ca4ae-e764-4394-ac31-9a92bbb456ab"
/>
Testing: If there isn't an existing test that covers this I'll make one,
waiting for the github runner to tell me whether this is covered and
then I'll amend the PR
---------
Signed-off-by: Leo Ring <leoring03@gmail.com>
Signed-off-by: Xiaocheng Hu <hu.xiaocheng@huawei.com>
Signed-off-by: Xiaocheng Hu <xiaochengh.work@gmail.com>
Co-authored-by: Xiaocheng Hu <hu.xiaocheng@huawei.com>
Co-authored-by: Xiaocheng Hu <xiaochengh.work@gmail.com>
WPT tests are expected to create screenshots as soon as everything is
loaded. If an animation is happening adding the "reftest-wait" class to
the root element is appropriate way to delay the screenshot. Previously,
the
test harness was waiting for all animations to finish, but that is just
leading to many timeouts. Removing that code fixes the timeouts.
Two Servo-specific tests are also updated as they were written with
Servo's previous behavior in mind.
Testing: There are test result updates for this change. Many TIMEOUTS
now either correctly
PASS OR FAIL.
Fixes: #36931.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
In quirks mode, the ::marker of a bare `<li>` should be
`list-style-position: inside`,
Testing: Some WPT improvement
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
For example, if a test uses `let props = ...` then this was triggering
an exception because testharnessreport-servo.js already created a global
variable named `props`.
Testing: some wpt tests no longer result in ERROR
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
This change adds support for rendering static SVG images using the
`resvg` crate, allowing svg sources in the `img` tag and in CSS
`background` and `content` properties. There are some limitations in
using resvg:
1. There is no support for animations or interactivity as these would
require implementing the full DOM layer of SVG specification.
2. Only system fonts can be used for text rendering. There is some
mechanism to provide a custom font resolver to usvg, but that is not
explored in this change.
3. resvg's handling of certain edge cases involving lack of explicit
`width` and `height` on the root svg element deviates from what the
specification expects from browsers. For example, resvg uses the values
in `viewBox` to derive the missing width or height dimension, but
without scaling that dimension to preserve the aspect ratio. It also
doesn't allow overriding this behavior.
Demo screenshot:
<details>
<summary>Source</summary>
```
<style>
#svg1 {
border: 1px solid red;
}
#svg2 {
border: 1px solid red;
width: 300px;
}
#svg3 {
border: 1px solid red;
width: 300px;
height: 200px;
object-fit: contain;
}
#svg4 {
border: 1px solid red;
width: 300px;
height: 200px;
object-fit: cover;
}
#svg5 {
border: 1px solid red;
width: 300px;
height: 200px;
object-fit: fill;
}
#svg6 {
border: 1px solid red;
width: 300px;
height: 200px;
object-fit: none;
}
</style>
</head>
<body>
<div>
<img id="svg1" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo">
</div>
<div>
<img id="svg2" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo">
<img id="svg3" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo">
<img id="svg4" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo">
</div>
<div>
<img id="svg5" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo">
<img id="svg6" src="https://raw.githubusercontent.com/servo/servo/refs/heads/main/resources/servo.svg" alt="Servo logo">
</div>
</body>
```
</details>
---------
Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
The label that is displayed inside a `<select>` element is that of the
selected option, or it's text contents if the option does not have a
label. Therefore, we need to update the `<select>` shadow tree when the
contents of the selected option change.
Testing: Covered by existing web platform tests
Fixes https://github.com/servo/servo/issues/36926
Fixes https://github.com/servo/servo/issues/36925
---------
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
It also updates the FetchResponseListener to process CSP violations to
ensure that iframe elements (amongst others) properly generate the CSP
events. These iframe elements are used in the Trusted Types tests
themselves and weren't propagating the violations before.
However, the tests themselves are still not passing since they also use
Websockets, which currently aren't using the fetch machinery itself.
That is fixed as part of [1].
[1]: https://github.com/servo/servo/issues/35028
---------
Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
Signed-off-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
This feature is part of --enable-experimental-web-platform-features, so
it should be enabled on all tests.
This causes some new failures, but mostly it's because the tests were
timing out instead of running the failing subtests.
This is part of #36315
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
This PR addresses a crash in text input element due to a hack to prevent
text input being trimmed.
The updated behavior will only add `zero width space` unicode character
to the node if there's no text content instead of adding it constantly.
Also by adding the same `zero width space` unicode character to text
area when there's no text content within will allow text area element to
properly display caret.
<img width="197" alt="截圖 2025-04-11 中午12 51 00"
src="https://github.com/user-attachments/assets/10bc7314-9aa3-49df-baac-ef26d39a96d8"
/>
This PR also addresses issues with multiple glyph runs:
https://github.com/user-attachments/assets/658db56f-b166-47ec-bc77-c6c13114d669
Testing: This PR is tested using:
- `./mach run -d 'data:text/html,<input id="input_element"
value="xxxxxxxxxxxxxxxxxxxx">'`
- `./mach run -d 'data:text/html,<textarea id="input_element"
value="xxxxxxxxxxxxxxxxxxxx">'`
without causing crashes, while the results should be covered by WPT
tests
Fixes: https://github.com/servo/servo/issues/36449
---------
Signed-off-by: DK Liao <dklassic@gmail.com>
https://github.com/user-attachments/assets/9aba75ff-4190-4a85-89ed-d3f3aa53d3b0
Among other things this adds a new `EmbedderMsg::ShowSelectElementMenu`
to tell the embedder to display a select popup at the given location.
This is a draft because some small style adjustments need to be made:
* the select element should always have the width of the largest option
* the border should be part of the shadow tree
Apart from that, it's mostly ready for review.
<details><summary>HTML for demo video</summary>
```html
<html>
<body>
<select id="c" name="choice">
<option value="first">First Value</option>
<option value="second">Second Value</option>
<option value="third">Third Value</option>
</select>
</body>
</html>
```
</details>
---
<!-- 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] Part of https://github.com/servo/servo/issues/3551
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___
<!-- 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: Simon Wülker <simon.wuelker@arcor.de>
This new `CSSStyleOwner` variant is used when the pseudo-element
argument fails to parse properly or is for some unknown or unsupported
pseudo-element.
Testing: There are tests for this change. Various tests start to pass
and some start to
fail. New failures are due to partial or fully missing support for
pseudo-elements such
as:
- `::selection`
- `::first-letter` and `::first-line`
- `::marker`
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
* Implement the <summary> element
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Implement UA shadow root for <details>
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Invalidate style when display is opened or closed
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Fix /_mozilla/mozilla/duplicated_scroll_ids.html
This test previously assumed that <details> elements would
not be rendered.
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Implement implicit summary elements
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Update WPT expectations
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Remove test for duplicated scroll IDs
See https://github.com/servo/servo/pull/35261#discussion_r1969328725 for
reasoning.
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Use Iterator::find to find implicit summary element
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
---------
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Don't register stylesheets outside of a browsing context with 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>
* Make traverse_preorder follow children of shadow hosts
Children of shadow hosts are not displayed, but they
still exist in the DOM and must be traversed.
Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>
* Fix traverse_preorder over shadow roots
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>
Adds support for min-content, max-content, fit-content and stretch,
for block-level elements that don't establish an independent formatting
context, and for block-level elements when there is no float.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
* 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>
* feat: patch for video layout sizes
added rebase from main 2024/10/05
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
Signed-off-by: eri <epazos@igalia.com>
* feat: take width and height parameters if provided
Signed-off-by: eri <epazos@igalia.com>
* chore: tidy the code and update test expectations
Signed-off-by: eri <epazos@igalia.com>
* feat: handle removing poster
Signed-off-by: eri <epazos@igalia.com>
* chore: update test expectations and remove debug code
Signed-off-by: eri <epazos@igalia.com>
* fix: issues after rebasing to main
Signed-off-by: eri <epazos@igalia.com>
* feat: pass src remove test and tidy
Signed-off-by: eri <epazos@igalia.com>
* chore: clippy fixes
Signed-off-by: eri <epazos@igalia.com>
* chore: update passing test expectations
Signed-off-by: eri <epazos@igalia.com>
* fix object-position-svg test
Signed-off-by: eri <epazos@igalia.com>
* fix unintentional override of video size and resize events
Signed-off-by: eri <epazos@igalia.com>
* change how resize events are sent to better match the spec
Signed-off-by: eri <epazos@igalia.com>
* simplify poster mutation handling
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
Signed-off-by: eri <eri@inventati.org>
* improved handling of intrinsic sizes
- differentiate between natural size and css size
- presentational attributes
- fallback ratio for video element
- handle more cases where the src/poster are added/removed
- aspect ratio hints
Signed-off-by: eri <epazos@igalia.com>
* update test expectations
Signed-off-by: eri <epazos@igalia.com>
* fix cleaning current frame
Signed-off-by: eri <epazos@igalia.com>
* update test expectations
Signed-off-by: eri <epazos@igalia.com>
* Apply suggestions from code review
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
Signed-off-by: eri <eri@inventati.org>
* More code review suggestions
Signed-off-by: eri <epazos@igalia.com>
* Prevent aspect-ratio:auto from pulling the ratio from the default object size
As resolved in https://github.com/w3c/csswg-drafts/issues/7524#issuecomment-1204462924
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
---------
Signed-off-by: eri <epazos@igalia.com>
Signed-off-by: eri <eri@inventati.org>
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
* Fix table track constraindness
Only as size that isn't `auto` and doesn't contain percentages can constrain
a table track (https://drafts.csswg.org/css-tables/#constrainedness).
However, in a bunch of cases we were only checking for `auto`.
Also, we were allowing the inline-size of a cell to constrain both its
column and row. Using the block-size of the row makes more sense.
The spec doesn't define constrainedness for rows, though.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
* Apply suggestions from code review
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
---------
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
For the sizing properties.
We don't actually support them yet, just treating them as
the initial value.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
This also makes a couple small improvements:
- Rename `IntrinsicSizes` to `NaturalSizes` which reflects more
modern spec language.
- Move the conversion of Stylo's `ImageRendering` to WebRender's
version to a `ToWebRender` trait implementation.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This behavir is enabled via a special CSS value that we can share with
Gecko.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
We were incorrectly using `AttrValue::from_nonzero_dimension` to parse
some attributes, instead of `AttrValue::from_dimension`.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
We were only parsing the `width` attribute as a presentation hint for
`<table>`, `<td>` and `<th>`. This patch also handles `<colgroup>` and
`<col>`.
Also, we weren't parsing `height` at all, now we do it for `<table>`,
`<td>`, `<th>`, `<tr>`, `<tbody>`, `<thead>` and `<tfoot>`.
One test is now crashing, but this was an existing issue: #33423
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
This change removes the `effective_writing_mode` concept and tries to
properly implement right-to-left layout support for all non-inline
writing modes. In general, what needs to happen is that rectangles
need to be converted to physical rectangles using the containing block.
A right-to-left rectangle's inline start is on the right physical side
of the containing block. Likewise a positive inline offset in
right-to-left text is a negative physical one.
The implementation here is pretty good for most layout modes, but floats
are still a bit in process. Currently, floats are processed in the
logical layout of the block container, but there still might be issues
with float interaction with mixed RTL and LTR.
While this does move us closer to supporting vertical writing modes,
this is still unsupported.
New failures:
- Vertical writing mode not supported:
- `/css/CSS2/floats/floats-placement-vertical-001b.xht`
- `/css/CSS2/floats/floats-placement-vertical-001c.xht`
- Absolutes inlines should avoid floats (#33323)
- `/css/css-position/position-absolute-dynamic-static-position-floats-004.html`
- No support for grid
- `/css/css-align/self-alignment/self-align-safe-unsafe-grid-003.html`
- `/css/css-position/static-position/inline-level-absolute-in-block-level-context-009.html`
- `/css/css-position/static-position/inline-level-absolute-in-block-level-context-010.html`
- Cannot reproduce these locally on any platform. Very mysterious:
- `/css/css-tables/row-group-margin-border-padding.html`
- `/css/css-tables/row-margin-border-padding.html`
- Exposes bugs we have related to hanging whitespace in preserved
whitespace inlines:
- `/css/css-text/white-space/trailing-space-and-text-alignment-rtl-003.html`
- `/css/css-text/white-space/white-space-pre-wrap-trailing-spaces-023.html`
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Rakhi Sharma <atbrakhi@igalia.com>
* Make Crashtests with test-wait wait
Signed-off-by: Taym <haddadi.taym@gmail.com>
* use Atom::from instead of the atom macro
Signed-off-by: Taym <haddadi.taym@gmail.com>
* Update test result expectations
Signed-off-by: Taym <haddadi.taym@gmail.com>
---------
Signed-off-by: Taym <haddadi.taym@gmail.com>
Flexbox is still very much in progress, but things are working well
enough that we can enable it by default. It improves most pages that use
flexbox now.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This adds supports for right-to-left text assigning bidi levels to all
line items when necessary. This includes support for the `dir` attribute
as well as corresponding CSS properties like `unicode-bidi`. It only
implements right-to-left rendering for inline layout at the moment and
doesn't include support for `dir=auto`. Because of missing features,
this causes quite a few tests to start failing, as references become
incorrect due to right-to-left rendering being active in some cases,
but not others (before it didn't exist at all).
Analysis of most of the new failures:
```
- /css/css-flexbox/gap-001-rtl.html
/css/css-flexbox/gap-004-rtl.html
- Require implementing BiDi in Flexbox, because the start and
end inline margins are opposite the order of items.
- /css/CSS2/bidi-text/direction-applies-to-*.xht
/css/CSS2/bidi-text/direction-applies-to-002.xht
/css/CSS2/bidi-text/direction-applies-to-003.xht
/css/CSS2/bidi-text/direction-applies-to-004.xht
- Broken due to a bug in tables, not allocating the
right amount of width for a column.
- /css/css-lists/inline-list.html
- This fails because we wrongly insert a soft wrap opportunity between the
start of an inline box and its first content.
- /css/css-text/bidi/bidi-lines-001.html
/css/css-text/bidi/bidi-lines-002.html
/css/CSS2/text/bidi-flag-emoji.html
- We do not fully support unicode-bidi: plaintext
- /css/css-text/text-align/text-align-end-010.html
/css/css-text/text-align/text-align-justify-006.html
/css/css-text/text-align/text-align-start-010.html
/html/dom/elements/global-attributes/*
- We do not support dir=auto yet.
- /css/css-text/white-space/tab-bidi-001.html
- Servo doesn't support tab stops
- /css/CSS2/positioning/abspos-block-level-001.html
/css/css-text/word-break/word-break-normal-ar-000.html
- Do not yet support RTL layout in block
- /css/css-text/white-space/pre-wrap-018.html
- Even in RTL contexts, spaces at the end of the line must hang and
not be reordered
- /css/css-text/white-space/trailing-space-and-text-alignment-rtl-002.html
- We are letting spaces hang with white-space: pre, but they shouldn't
hang.
```
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Rakhi Sharma <atbrakhi@igalia.com>
If a (min/max)-(height/width) property is set, we still need to respect
the intrinsic ratio of the element if it exists. The previous code was
simply clamping the element size after doing the sizing calculations
once, but this leads to an incorrect aspect ratio.
Signed-off-by: valadaptive <valadaptive@protonmail.com>
This adds support for generic font families in Servo and allows for
configuration of them as well as their default font sizes. One
interesting fix here is that now monospace default to 13px, like it does
in other browsers.
In addition to that, this exposes a new interface in Stylo which allows
setting a default style. This is quite useful for fonts, but also for
other kinds of default style settings -- like text zoom.
Fixes#8371.
Fixes#14773.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
- Instead of treating captions as a `BlockFormattingContext`, treat it as
a `NonReplacedFormattingContext`, which allows reusing flow layout for
captions -- fixing some issues with sizing.
- Pass in the proper size of the containing block when laying out,
fixing margin calculation.
- Follow the unspecified rules about how various size properties on
captions affect their size.
- Improve linebreaking around atomics, which is tested by
caption-related tests. This fixes intrinsic size calculation regarding
soft wrap opportunities around atomic and also makes the code making
these actual soft wrap opportunities a bit better.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
