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Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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Co-authored-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Euclid Ye <euclid.ye@huawei.com>
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>
### Changes made
This implements named grid lines (line names in `grid-template-*`),
named grid areas (`grid-template-areas`), and the ability to target
those using `grid-{row,column}-{start,end}`. It also includes a bunch of
miscelaneous fixes for `repeat(auto-fill | auto-fit, ...)` syntax as
that interacts with the specification of line names.
The actual layout implementation is in Taffy. The bulk of this PR is
updating Servo to translate (CSS Grid-related) Stylo types into Taffy
types using a new iterator-based API which uses iterators and lazy
translation for efficiency (which is more important now that we're
dealing with string data, even though they're `Atom`s).
### Testing
This functionality has lots of WPT tests. It fixes some seemingly random
CSS Grid tests that use named lines/areas even though that's not what
they're testing.
### Screenshots
wikipedia.org
<img width="1624" height="1056" alt="Screenshot 2025-07-27 at 20 03 16"
src="https://github.com/user-attachments/assets/2c50b96f-ae36-4405-ac48-b771bfdcb515"
/>
bbc.co.uk:
<img width="1624" height="1056" alt="Screenshot 2025-07-27 at 20 32 57"
src="https://github.com/user-attachments/assets/ba84e211-65d2-4411-95fb-7b9b91bea31c"
/>
theguardian.com:
<img width="1624" height="1056" alt="Screenshot 2025-07-27 at 20 33 29"
src="https://github.com/user-attachments/assets/e85daaa6-5fb0-45d4-b9ec-b22b38b087ec"
/>
---------
Signed-off-by: Nico Burns <nico@nicoburns.com>
When laying out a grid item, the tentative block size that is used to
determine the intrinsic inline sizes was different than the one used in
the containing block for the contents. The latter is now used for both
cases.
Testing: A test is now passing.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
It was very easy to forget about using `.with_specific_layout_info()` to
set the specific layout info, so it's better to make it a parameter.
In fact this already happened in the past: #36993 fixed the missing
specific layout info for flex items.
This patch fixes it for floats and atomic inlines. It also propagates it
in other cases where not doing so was not a big deal because the
specific layout info was None, but that was a fragile assumption.
Testing: Various WPT improvements
Fixes: #37898
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
This applies some fixes for CSS Grid percentage sizing. These fixes are
mostly within Taffy, but there are some changes in Servo to allow it to
communicate whether an item is replaced to Taffy.
It also updates Taffy to v0.8.0. Taffy has switched to a tagged pointer
representation of length/size styles. Much of the diff here is updating
Servo's type conversion code to use the new representation.
---
<!-- 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] There are tests for these changes OR
---------
Signed-off-by: Nico Burns <nico@nicoburns.com>
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>
This affects the following testsuites:
- tests/wpt/tests/
- tests/wpt/mozilla/tests/
- tests/wpt/webgl/tests/
- tests/wpt/webgpu/tests/
Testing: Several tests improve
This is part of #36315
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
The initial value of `min-width` and `min-height` was 0px in CSS2.
However, CSS3 changed it to `auto`, so for backwards compatibility,
`getComputedStyle` needs to resolve it to 0px in a bunch of cases.
Testing: covered by WPT
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
This change ensures that `display: inline-grid` is considered an atomic
inline
- Add `is_atomic_inline_level()` logic to `box_fragment.rs` to improve
accuracy.
- Update `stacking_context.rs` to use the new `is_atomic_inline_level()`
method instead of the one from stylo.
- Update `repeat-auto-fill-005.html` test expectation.
- Remove .ini expectations for tests that are no longer failing.
Testing: covered by WPT
Fixes: #35310
---------
Signed-off-by: Barigbue <barigbuenbira@gmail.com>
This imports the following changes from Blitz:
- Map position:sticky to relative rather than absolute position
16a7c16544
- Map left and right alignment from Stylo
c71cc681d8
- Improve mapping of align-items/self
7bf2a25e75Fixes: #35998
Testing:
-
`/css/css-grid/alignment/grid-align-justify-margin-border-padding.html`
- `/css/css-grid/alignment/grid-align.html`
-
`/css/css-grid/alignment/grid-column-axis-alignment-sticky-positioned-items-001.html`
- `/css/css-grid/alignment/grid-gutters-and-alignment.html`
-
`/css/css-grid/alignment/grid-item-alignment-with-orthogonal-flows.html`
-
`/css/css-grid/alignment/grid-row-axis-alignment-sticky-positioned-items-001.html`
- `/css/css-grid/alignment/grid-self-alignment.html`
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
The static position rect is calculated assuming that the containing
block would be established by the content box of some ancestor, but the
actual containing block is established by the padding box.
So we need to add the padding of that ancestor.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
In particular:
- `z-index` will now work on unpositioned grid items.
- `will-change: z-index` will only establish a stacking context if
`z-index` applies, i.e. if the box is positioned or a flex/grid item.
- The conditions in `establishes_stacking_context()` are reordered,
so that the most likely ones are checked first.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Flatten and simplify Servo's preferences code. In addition, have both
preferences and options passed in as arguments to `Servo::new()` and
make sure not to use the globally set preferences in `servoshell` (as
much as possible now).
Instead of a complex procedural macro to generate preferences, just
expose a very simple derive macro that adds string based getters and
setters.
- All command-line parsing is moved to servoshell.
- There is no longer the concept of a missing preference.
- Preferences no longer have to be part of the resources bundle because
they now have reasonable default values.
- servoshell specific preferences are no longer part of the preferences
exposed by the Servo API.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
A box is usually sized by the formatting context in which it participates.
However, tables have some special sizing behaviors, and these were in
conflict.
Instead of letting tables attempting to re-resolve their inline table,
which failed to e.g. take flex properties into account or resolve sizing
keywords correctly, now tables will trust the inline size determined by
the parent. They will only floor it by the min-content size, and maybe
shrink the final size due to collapsed columns.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
Adds support for min-content, max-content, fit-content and stretch,
for the case that was missing from #34568: block-level elements that
establish an independent formatting context, when there are floats.
Signed-off-by: Oriol Brufau <obrufau@igalia.com>
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>
