³ò Je|Mc@s‹dZddkZddkZddkZddkZdddgZd„Zd d„Zd d„Z d „Z e d jo e ƒndS( s#Multimedia helpers for images, etc.iÿÿÿÿNt choose_heighttget_dimensions_piltget_dimensionscCs$t|ƒt|ƒ}t||ƒS(sReturn the height corresponding to ``new_width`` that's proportional to the original size (``width`` x ``height``). (tfloattint(t new_widthtwidththeightt proportion((s`/afs/athena.mit.edu/user/x/a/xavid/Public/bazki/lib/WebHelpers-1.2-py2.5.egg/webhelpers/media.pyR scCs@ddk}y|i|ƒ}Wntj o |SnX|iS(s)Get an image's size using the Python Imaging Library (PIL). ``path`` is the path of the image file. ``default`` is returned if the size could not be ascertained. This usually means the file does not exist or is not in a format recognized by PIL. The normal return value is a tuple: ``(width, height)``. Depends on the `Python Imaging Library `_. If your application is not otherwise using PIL, see the ``get_dimensions()`` function, which does not have external dependencies. iÿÿÿÿN(tImagetopent Exceptiontsize(tpathtdefaultR tim((s`/afs/athena.mit.edu/user/x/a/xavid/Public/bazki/lib/WebHelpers-1.2-py2.5.egg/webhelpers/media.pyRs   c Cs®tii|ƒ}yt|dƒ}Wntj o |SnXz]|idƒ}|idƒo÷d}}|idƒxÏt oÇd}|i|ƒ}yt i d|ƒ\} } }Wnt j oPnX| djoPndt | ƒjo d jno1d }|i|ƒ}t i d |ƒ\}}q{|i|dƒq{W||fSn@|id ƒp|id ƒob|idƒ|idƒ} | djo5|idƒ}t i d|ƒ\}}||fSq—n¾|idƒp|idƒoK|idƒ|idƒ}t i d|ƒ\}}} } }||fSnS|idƒoB|idƒ|idƒ}t i d|ƒ\}}||fSn|SWd|iƒXdS(sÿGet an image's size using only the Python standard library. ``path`` is the path of the image file. ``default`` is returned if the size could not be ascertained. This usually means the file does not exist or is not in a recognized format. PIL. Only JPG, PNG, GIF, and BMP are supported at this time. The normal return value is a tuple: ``(width, height)``. The algorithms are based on a `PyCode recipe `_ by Perenzo/Welch/Ray. This helper recognizes fewer image formats and is potentially less accurate than ``get_dimensions_pil()``. Running this module as a script tests this helper. It will print the size of each image file specified on the command line. trbisÿØiis!ccHsÿiÀiÃis!xHHs‰PNG  sŠMNG  i tIHDRtMHDRis!IItGIF87atGIF89aiiss       J