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"""

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    Configuration

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"""

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import logging

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class Configuration (object) :

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    """

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        Various configuration settings

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    """

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    ## runtime settings

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    # the path to the gallery

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    gallery_path        = "."

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    # force-update items

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    force_thumb         = False

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    force_html          = False

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    # minimum logging level

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    log_level           = logging.INFO

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    ## detailed configuration

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    # the name of the gallery

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    gallery_title       = "Image Gallery"

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    # recognized image extensions

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    image_exts          = ('jpg', 'jpeg', 'png', 'gif', 'bmp')

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    # subdirectory used for generated thumbnails/previews

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    thumb_dir           = 'thumbs'

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    preview_dir         = 'previews'

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    # size of generated thumbnails/previews

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    thumb_size          = (160, 120)

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    preview_size        = (640, 480)

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    # number of images displayed per folder page

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    images_per_page     = 50

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    # load Exif data for images

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    # this may be slow

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    exif_enabled        = False

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    # exif tags used in output

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    # Copyright (C) 2008, Santtu Pajukanta <santtu@pajukanta.fi>

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    # XXX: import from dexif?

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    exif_tags           = [

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        # TODO Create date is in a useless format, needs some strptime love

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        ("CreateDate",              "Create date"               ),

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        ("Model",                   "Camera model"              ),

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        ("Aperture",                "Aperture"                  ),

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        ("ExposureMode",            "Exposure mode"             ),

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        ("ExposureCompensation",    "Exposure compensation"     ),

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        ("ExposureTime",            "Exposure time"             ),

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        ("Flash",                   "Flash mode"                ),

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        ("ISO",                     "ISO"                       ),

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        ("ShootingMode",            "Shooting mode"             ),

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        ("LensType",                "Lens type"                 ),

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        ("FocalLength",             "Focal length"              )

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    ]

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    ### functions

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    def is_image (self, file) :

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        """

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            Tests if the given File is an image, based on its file extension

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        """

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        return file.matchext(self.image_exts)

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