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https://issues.apache.org/jira/browse/WICKET-2192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12693734#action_12693734
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Johan Compagner commented on WICKET-2192:
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dont know if Image should do that by default.
Problem is that Image gets a ResourceReference or a Resource so it doesnt
really know a lot about the image.
Then we need to load the image and parse it (read it in as gif/jpg/png) to get
the real size.
Maybe a Behavior could do this that could be added to an Image by the developer.
that can then have a predefined size or can parse image and calculate it.
> Image should automatically set width and height attributes in markup
> --------------------------------------------------------------------
>
> Key: WICKET-2192
> URL: https://issues.apache.org/jira/browse/WICKET-2192
> Project: Wicket
> Issue Type: Improvement
> Affects Versions: 1.4-RC2
> Reporter: Esko Suomi
> Priority: Minor
>
> org.apache.wicket.markup.html.image.Image component (and all possible
> derivates) should add width and height attributes of the image it represents
> automatically to markup to allow for faster correct rendering of the actual
> page. For example when rendering a table with images in table cells the table
> cell width may vary a lot during loading of the page and its contents which
> causes the table to jitter around while loading if image dimension attributes
> aren't set.
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