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LibWeb: Handle flood-opacity in line with other opacity properties

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We now do the proper thing in terms of:
 - Allowing percentages
 - Returning the computed value in getComputedStyle
 - Handling values out of the [0,1] range

Gains us 13 WPT passes in the imported tests.
This commit is contained in:
Callum Law 2025-07-18 22:37:12 +12:00 • committed by Alexander Kalenik
commit 4ee8110449
Notes: github-actions[bot] 2025-07-18 15:06:07 +00:00
7 changed files with 84 additions and 1 deletions
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14
Tests/LibWeb/Text/expected/wpt-import/css/filter-effects/parsing/flood-opacity-computed.txt Normal file
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@ -0,0 +1,14 @@
Harness status: OK
Found 8 tests
6 Pass
2 Fail
Pass Property flood-opacity value '-1'
Pass Property flood-opacity value '0.5'
Pass Property flood-opacity value '3'
Pass Property flood-opacity value '-100%'
Pass Property flood-opacity value '50%'
Pass Property flood-opacity value '300%'
Fail Property flood-opacity value 'calc(0.5 * sign(10em - 1px))'
Fail Property flood-opacity value 'calc(50% * sign(10em - 1px))'

12
Tests/LibWeb/Text/expected/wpt-import/css/filter-effects/parsing/flood-opacity-valid.txt Normal file
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@ -0,0 +1,12 @@
Harness status: OK
Found 7 tests
7 Pass
Pass e.style['flood-opacity'] = "-1" should set the property value
Pass e.style['flood-opacity'] = "0.5" should set the property value
Pass e.style['flood-opacity'] = "3" should set the property value
Pass e.style['flood-opacity'] = "-100%" should set the property value
Pass e.style['flood-opacity'] = "50%" should set the property value
Pass e.style['flood-opacity'] = "300%" should set the property value
Pass e.style['flood-opacity'] = "calc(0.5 * sign(10em - 1px))" should set the property value