77 commits

Author	SHA1	Message	Date
Sam Atkins	26acd897bf	LibWeb: Produce computed values for custom properties ... Custom properties are required to produce a computed value just like regular properties. The computed value is defined in the spec as "specified value with variables substituted, or the guaranteed-invalid value", though in reality all arbitrary substitution functions should be substituted, not just `var()`. To support this, we parse the CSS-wide keywords normally in custom properties, instead of ignoring them. We don't yet handle all of them properly, and because that will require us to cascade them like regular properties. This is just enough to prevent regressions when implementing ASFs. Our output in this new test is not quite correct, because of the awkward way we handle whitespace in property values - so it has 3 spaces in the middle instead of 1, until that's fixed. It's possible this computed-value production should go in cascade_custom_properties(), but I had issues with that. Hopefully once we start cascading custom properties properly, it'll be clearer how this should all work.	2025-07-09 16:44:20 +01:00
Sam Atkins	0809eacd97	LibWeb/CSS: Update definition for cursor property ... No functional changes. The main difference is renaming the cursor enum to match the spec term `<cursor-predefined>`, which is a bit more verbose but clearer in meaning. Corresponds to 1a57a4025c	2025-07-09 13:21:26 +02:00
Callum Law	da40419c5b	LibWeb: Support border-{block,inline} shorthands ... Gains us 4 WPT tests	2025-07-09 10:10:38 +01:00
Callum Law	56c68aedea	LibWeb: Remove special parsing of physical border longhands ... Parsing of these properties is handled by the default behaviour. No functionality changes.	2025-07-09 10:10:38 +01:00
Callum Law	36e2d25efa	LibWeb: Parse grid track placements closer to spec ... This brings parsing of grid-row-* and grid-column-* properties (and their associated shorthands) more inline with spec. Changes: - Only set omitted properties for combined-value shorthands (e.g. `grid-row: a` rather than `grid-row: a / b`) if the single value is `<custom-ident>`. - `[ [ <integer [-∞,-1]> | <integer [1,∞]> ] && <custom-ident>? ]`: - Properly resolve `calc`s for `<integer>` that rely on compute-time information. - `[ span && [ <integer [1,∞]> || <custom-ident> ] ]` - Allow `calc`s for `<integer>` - Allow `<custom-ident>` There is still work to be done to properly use these parsed values. Gains us 46 WPT tests.	2025-07-08 17:26:16 +01:00
Sam Atkins	d9aeffa302	LibWeb/CSS: Adjust grammar definitions ... Corresponds to: e2903b127e 1b4ea44fc8	2025-07-08 10:24:49 +01:00
Callum Law	9ab7c5d08d	LibWeb: Support relative lengths in calc color values ... Gains us ~40 WPT tests.	2025-07-04 13:18:55 +01:00
Callum Law	62d138ebf7	LibWeb: Allow passing a resolution context to CSSStyleValue::to_color ... This will be used for resolving any calculated style values within the various `CSSColorValue` sub-classes. No functionality changes.	2025-07-04 13:18:55 +01:00
Tim Ledbetter	923deb0c01	LibWeb: Parse border-image shorthand property	2025-07-03 10:19:44 +01:00
Tim Ledbetter	245905b833	LibWeb: Parse the border-image-slice property	2025-07-03 10:19:44 +01:00
Gingeh	b8f78e3bc1	LibWeb: Don't crash with invalid transform-origin values	2025-07-01 14:19:10 +01:00
Tim Ledbetter	ac25f47e8f	LibWeb/SVG: Disallow negative stroke-dasharray values	2025-06-27 23:00:13 +02:00
Aliaksandr Kalenik	8d6f2390f6	LibWeb: Set grid-auto-* to initial values when parsing grid-template ... ...as `grid` property value.	2025-06-24 19:14:08 +02:00
Tim Ledbetter	9b6da84fff	LibWeb/CSS: Implement the font-kerning property ... This sets whether the kerning information stored on the current font is used.	2025-06-23 13:26:48 +01:00
Aliaksandr Kalenik	af602b2555	LibWeb: Align CSS Grid properties parsing with the specification ... Reimplements `grid`, `grid-template`, `grid-template-rows`, and `grid-template-columns` in a way that uses a separate function for each grammar rule defined in the specification. This change results in many additional passing tests from the already imported WPT suite. Most of the remaining test failures are related to incorrect serialization of grid properties.	2025-06-21 22:07:08 +02:00
Tim Ledbetter	269d5bb40e	LibWeb: Resolve percentages for opacity properties at parse time	2025-06-19 10:27:35 +02:00
Tim Ledbetter	96d8bed35b	LibWeb/CSS: Serialize contain values in canonical order	2025-06-17 08:17:33 +01:00
Tim Ledbetter	7faeef8d0d	LibWeb: Treat font-variant values with unknown keywords as invalid	2025-06-15 16:44:51 +02:00
Tim Ledbetter	d89a67ffee	LibWeb: Don't serialize omitted box-shadow and text-shadow values	2025-06-15 16:05:12 +02:00
Tim Ledbetter	68d3ddb1a7	LibWeb: Parse the transform-origin z-value	2025-06-15 16:01:54 +02:00
Tim Ledbetter	a8d5758777	LibWeb: Only resolve transform-origin keywords for the computed value ... Previously, we were resolving these keywords at parse time, which gave an incorrect serialization of the specified value.	2025-06-15 16:01:54 +02:00
Tim Ledbetter	a3f6e71e33	LibWeb/CSS: Disallow third argument in 2D scale functions	2025-06-15 15:59:02 +02:00
Tim Ledbetter	64728aef6c	LibWeb: Disallow non-ASCII font-language-override values	2025-06-14 16:05:04 -04:00
Tim Ledbetter	c55f281475	LibWeb: Disallow empty font-language-override string values	2025-06-14 16:05:04 -04:00
Tim Ledbetter	028bcd3d67	LibWeb/CSS: Backtrack the parser if a property does not accept a value	2025-06-14 08:22:56 +02:00
Tim Ledbetter	26293114d8	LibWeb/CSS: Treat repeated text-decoration-line values as invalid	2025-06-14 08:19:47 +02:00
Callum Law	d31a58a7d6	LibWeb: Add support for the 'all' CSS property ... The "longhands" array is populated in the code generator to avoid the overhead of manually maintaining the list in Properties.json There is one subtest that still fails in 'cssstyledeclaration-csstext-all-shorthand', this is related to us not maintaining the relative order of CSS declarations for custom vs non-custom properties.	2025-06-12 15:25:35 +01:00
Tim Ledbetter	e2d0d8e2b9	LibWeb/CSS: Implement the scrollbar-color property ... This allows the user to set the scrollbar thumb and track colors.	2025-06-02 00:17:51 +02:00
Lucien Fiorini	0fcb574041	LibGfx+LibWeb: Turn Gfx::Filter into a SkImageFilter wrapper	2025-06-01 23:22:10 +02:00
Callum Law	94f5a51820	LibWeb: Convert white-space CSS property to shorthand ... This exposed a few bugs which caused the following tests to behave incorrectly: - `tab-size-text-wrap.html`: This previously relied on a bug where we incorrectly treated `white-space: pre` as allowing text wrapping. The fix here is to implement the text-wrap CSS shorthand property. - `execCommand-preserveWhitespace.html`: We don't correctly serialize shorthand properties. This is covered by an existing FIXME in `CSSStyleProperties::serialized()` - `white-space-shorthand.html`: The last 5 subtests here fail as we don't correctly handle shorthand properties in `CSSStyleProperties::remove_property()`. This is covered by an existing FIXME in said function.	2025-05-29 12:04:28 +02:00
Callum Law	9480b1fc5c	LibWeb: Parse and propagate white-space-trim CSS property	2025-05-29 12:04:28 +02:00
Sam Atkins	f5825ab18c	LibWeb/CSS: Stop erasing font-variant-css2 value in font shorthand ... We don't want to reset the values of `font-variant-*` here, as that will override whatever our parsed font-variant-css2 was, so stop doing that. Also, font-stretch is mentioned in the spec, but it's a legacy name alias for font-width, so we don't need to do anything for it. Gets us 319 WPT passes!	2025-05-23 19:39:23 +01:00
Sam Atkins	d9a8349d8c	LibWeb/CSS: Parse font-variant and font-weight parts of font properly ... These are not the same as parsing their properties, but are limited to a small set of keywords each. The easiest way to handle these is parsing them directly here. Update some comments while I'm here.	2025-05-23 19:39:23 +01:00
Mark Langen	6cbb5d2785	LibWeb: Parse and propagate touch-action CSS property ... Co-authored-by: Sam Atkins <sam@ladybird.org>	2025-05-06 12:22:01 +01:00
Psychpsyo	7c36a82129	LibWeb: Improve parsing for the CSS contain property ... This makes us actually respect the grammar and nets us a couple extra WPT passes in the parsing section.	2025-05-04 22:24:26 +01:00
Tim Ledbetter	c0f9b11070	LibWeb: Parse oblique font-style with an angle value	2025-05-03 12:05:22 +02:00
Bastiaan van der Plaat	832bb978f5	LibWeb: Reject CSS values with unprocessed tokens / extra semicolons	2025-05-02 11:10:02 +01:00
Tim Ledbetter	542c3cbe51	LibWeb: Implement the transition-behavior CSS property ... This specifies whether transitions should be started for transitions whose animation behavior is discrete.	2025-05-02 11:07:19 +01:00
Tim Ledbetter	27baaa13e9	LibWeb: Support parsing and serializing 3D translate values	2025-04-30 19:36:56 +02:00
Sam Atkins	326933cd93	LibWeb/CSS: Use CSS::URL for <url> and <paint> types	2025-04-30 17:38:38 +01:00
Tim Ledbetter	e7ae9c8ebf	LibWeb: Parse all as keyword in transition shorthand ... This ensures that the parsing of the `transition` shorthand property behaves in the same way as the `transition-property` longhand.4	2025-04-28 20:51:36 +02:00
Tim Ledbetter	8a398e7a88	LibWeb: Parse all transition-property value as keyword ... We were previously parsing this value, as a custom-ident, meaning that the code path for handling the `all` case wasn't being followed.	2025-04-27 09:49:00 +01:00
Andreas Kling	cf704cfbfc	LibWeb: Implement interpolation for CSS scale values ... And let's handle the 3rd (Z) scale parameter as well, while we're here. At least 242 new passes on WPT.	2025-04-25 14:08:12 +02:00
Tim Ledbetter	64577ad704	LibWeb: Allow multiple values for the transition-duration property	2025-04-23 21:02:59 +01:00
Tim Ledbetter	1ca9f2a44d	LibWeb: Allow multiple values for the transition-delay property	2025-04-23 21:02:59 +01:00
Tim Ledbetter	c5f1f36119	LibWeb: Allow multiple values for transition-timing-function property	2025-04-23 21:02:59 +01:00
Tim Ledbetter	1f8f3804a3	LibWeb: Allow transition-property with multiple values	2025-04-23 21:02:59 +01:00
Andrew Kaster	6d11414957	LibWeb: Make storage of CSS::StyleValues const-correct ... Now we consistently use `RefPtr<StyleValue const>` for all StyleValues.	2025-04-16 10:41:44 -06:00
Sam Atkins	a7f7c2a821	LibWeb/CSS: Teach OpenTypeTaggedStyleValue to serialize without "1"	2025-04-07 10:00:21 +01:00
Tim Ledbetter	e73438e82c	LibWeb: Clamp grayscale, invert, filter and opacity filter values to 1	2025-04-04 17:12:47 +01:00