[TYPO3-core] RFC #13985: bugfix/code cleanup: wrong image dimension returned if alternative logo is set and skin-extension is installed in global-space (backend-redesign)

[Stephan N Kellermayr]

this is an SVN patch request.

type: bugfix/code cleanup

bugtracker references:
http://bugs.typo3.org/view.php?id=13985

branches:
trunk, current branch

problem:
if an alternative TYPO3-logo is set in $GLOBALS['TBE_STYLES']['logo'] 
and a skin-extension is installed in 'typo3/ext/' (globally), the 
'typo3/classes/class.typo3logo.php' does not check the image-dimensions. 
instead it outputs the alternative image with the size of the default 
logo. thats bad for backend-redesigners, because the alternative logo is 
displayed squashed.

solution:
just remove the substring-check '../', resolve the backpath to the 
alternative logo-file and always run through 'getimagesize'.


notes:
none

best regards,
Stephan N Kellermayr
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