[Webkit-unassigned] [Bug 172224] New: Incorrect dimensions of images with srcset when adopted from document without browsing context

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172224

            Bug ID: 172224
           Summary: Incorrect dimensions of images with srcset when
                    adopted from document without browsing context
           Product: WebKit
           Version: Safari 10
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: memmie at lenglet.name

Created attachment 310397

  --> https://bugs.webkit.org/attachment.cgi?id=310397&action=review

Test cases: nodes from documents with and without browsing context

Overview:

Images created from document without browsing context have incorrect dimension (width=0 and height=0) if not forced (defined with CSS). These images are loaded but not visible.
NaturalHeight and naturalWidth are correctly provided (the images are loaded).
This issue doesn't happend if the node is imported (Document#importNode) instead of adopted (Document#adoptNode).

Steps to Reproduce, with JavaScript:

1. Create a document without browsing context (createHTMLDocument, DOMParser, removed iframe)
2. create image with srcset nodes with innerHTML or write() or createElement(), etc.
3. adopt the image node to the current document
4. append the image node

Actual Results:

Images are loaded (see web dev tools, load event) but the width and the height are equals 0.
If with CSS, dimensions are defined (forced), the image is visible

Expected Results:

If dimensions are not forced, the image should have dimension match its natural width and height.

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