Bug 252903

Summary:

[Resize-observer] The `getBoundingBox` of a non-empty SVG element is 0x0

Product:

WebKit

Reporter:

cathiechen <cathiechen>

Component:

CSS

Assignee:

cathiechen <cathiechen>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

cathiechen, rbuis, sabouhallawa, simon.fraser, webkit-bug-importer, zalan

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
test-case	none

cathiechen

Reported 2023-02-24 07:30:40 PST

Created attachment 465152 [details] test-case In ResizeObservation::computeObservedSizes(), it calls `downcast<SVGElement>(*m_target).getBoundingBox()` which returns 0x0 when the layout size of SVG is not empty. See the attached test.

Attachments
test-case (785 bytes, text/html) 2023-02-24 07:30 PST, cathiechen	no flags	Details
View All Add attachment proposed patch, testcase, etc.

cathiechen

Comment 1 2023-02-24 08:50:12 PST

According to [1], > Web content can also contain SVG elements. SVG elements that do not have associated CSS layout boxes define bounding box instead of a content box. Content rect for the SVGGraphicsElements without CSS layout boxes is a rect whose: > width is bounding box width > height is bounding box height So from ResizeObserver size, it is correct to call `downcast<SVGElement>(*m_target).getBoundingBox()` in `ResizeObservation::computeObservedSizes()`. I'll leave this bug to an SVG Expert. [1] https://drafts.csswg.org/resize-observer/

cathiechen

Comment 2 2023-03-02 13:28:54 PST

Pull request: https://github.com/WebKit/WebKit/pull/10955

Radar WebKit Bug Importer

Comment 3 2023-03-03 07:31:14 PST

<rdar://problem/106194536>

EWS

Comment 4 2023-03-27 06:24:00 PDT

Committed 262145@main (afa718b1cfd9): <https://commits.webkit.org/262145@main> Reviewed commits have been landed. Closing PR #10955 and removing active labels.

Note You need to log in before you can comment on or make changes to this bug.