Move metadata treeview into a new library file
svn: r17912
This commit is contained in:
Nick Hall
@@ -22,68 +22,9 @@
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# $Id$
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#
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from ListModel import ListModel
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from libmetadata import MetadataView
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from gen.plug import Gramplet
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from gen.ggettext import gettext as _
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import gen.lib
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import DateHandler
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import datetime
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import gtk
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import Utils
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import pyexiv2
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# v0.1 has a different API to v0.2 and above
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if hasattr(pyexiv2, 'version_info'):
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OLD_API = False
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else:
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# version_info attribute does not exist prior to v0.2.0
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OLD_API = True
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def format_datetime(exif_dt):
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"""
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Convert a python datetime object into a string for display, using the
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standard Gramps date format.
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"""
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if type(exif_dt) != datetime.datetime:
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return ''
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date_part = gen.lib.Date()
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date_part.set_yr_mon_day(exif_dt.year, exif_dt.month, exif_dt.day)
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date_str = DateHandler.displayer.display(date_part)
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time_str = _('%(hr)02d:%(min)02d:%(sec)02d') % {'hr': exif_dt.hour,
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'min': exif_dt.minute,
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'sec': exif_dt.second}
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return _('%(date)s %(time)s') % {'date': date_str, 'time': time_str}
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def format_gps(tag_value):
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"""
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Convert a (degrees, minutes, seconds) tuple into a string for display.
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"""
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return "%d°%02d'%05.2f\"" % (tag_value[0], tag_value[1], tag_value[2])
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IMAGE = _('Image')
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CAMERA = _('Camera')
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GPS = _('GPS')
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TAGS = [(IMAGE, 'Exif.Image.ImageDescription', None, None),
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(IMAGE, 'Exif.Image.Rating', None, None),
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(IMAGE, 'Exif.Photo.DateTimeOriginal', None, format_datetime),
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(IMAGE, 'Exif.Image.Artist', None, None),
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(IMAGE, 'Exif.Image.Copyright', None, None),
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(IMAGE, 'Exif.Photo.PixelXDimension', None, None),
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(IMAGE, 'Exif.Photo.PixelYDimension', None, None),
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(CAMERA, 'Exif.Image.Make', None, None),
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(CAMERA, 'Exif.Image.Model', None, None),
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(CAMERA, 'Exif.Photo.FNumber', None, None),
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(CAMERA, 'Exif.Photo.ExposureTime', None, None),
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(CAMERA, 'Exif.Photo.ISOSpeedRatings', None, None),
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(CAMERA, 'Exif.Photo.FocalLength', None, None),
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(CAMERA, 'Exif.Photo.MeteringMode', None, None),
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(CAMERA, 'Exif.Photo.ExposureProgram', None, None),
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(CAMERA, 'Exif.Photo.Flash', None, None),
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(GPS, 'Exif.GPSInfo.GPSLatitude',
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'Exif.GPSInfo.GPSLatitudeRef', format_gps),
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(GPS, 'Exif.GPSInfo.GPSLongitude',
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'Exif.GPSInfo.GPSLongitudeRef', format_gps)]
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class MetadataViewer(Gramplet):
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"""
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@@ -100,20 +41,17 @@ class MetadataViewer(Gramplet):
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"""
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Build the GUI interface.
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"""
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top = gtk.TreeView()
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titles = [(_('Key'), 1, 250),
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(_('Value'), 2, 350)]
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self.model = ListModel(top, titles, list_mode="tree")
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return top
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self.view = MetadataView()
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return self.view
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def main(self):
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active_handle = self.get_active('Media')
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media = self.dbstate.db.get_object_from_handle(active_handle)
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self.sections = {}
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self.model.clear()
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if media:
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self.display_exif_tags(media)
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full_path = Utils.media_path_full(self.dbstate.db, media.get_path())
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has_data = self.view.display_exif_tags(full_path)
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self.set_has_data(has_data)
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else:
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self.set_has_data(False)
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@@ -126,85 +64,8 @@ class MetadataViewer(Gramplet):
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"""
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Return True if the gramplet has data, else return False.
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"""
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# pylint: disable-msg=E1101
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if media is None:
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return False
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full_path = Utils.media_path_full(self.dbstate.db, media.get_path())
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if OLD_API: # prior to v0.2.0
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try:
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metadata = pyexiv2.Image(full_path)
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except IOError:
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return False
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metadata.readMetadata()
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if metadata.exifKeys():
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return True
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else: # v0.2.0 and above
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metadata = pyexiv2.ImageMetadata(full_path)
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try:
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metadata.read()
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except IOError:
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return False
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if metadata.exif_keys:
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return True
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return False
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def display_exif_tags(self, media):
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"""
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Display the exif tags.
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"""
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# pylint: disable-msg=E1101
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full_path = Utils.media_path_full(self.dbstate.db, media.get_path())
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if OLD_API: # prior to v0.2.0
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try:
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metadata = pyexiv2.Image(full_path)
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except IOError:
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self.set_has_data(False)
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return
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metadata.readMetadata()
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for section, key, key2, func in TAGS:
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if key in metadata.exifKeys():
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if section not in self.sections:
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node = self.model.add([section, ''])
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self.sections[section] = node
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else:
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node = self.sections[section]
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label = metadata.tagDetails(key)[0]
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if func:
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human_value = func(metadata[key])
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else:
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human_value = metadata.interpretedExifValue(key)
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if key2:
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human_value += ' ' + metadata.interpretedExifValue(key2)
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self.model.add((label, human_value), node=node)
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self.model.tree.expand_all()
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else: # v0.2.0 and above
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metadata = pyexiv2.ImageMetadata(full_path)
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try:
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metadata.read()
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except IOError:
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self.set_has_data(False)
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return
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for section, key, key2, func in TAGS:
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if key in metadata.exif_keys:
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if section not in self.sections:
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node = self.model.add([section, ''])
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self.sections[section] = node
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else:
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node = self.sections[section]
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tag = metadata[key]
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if func:
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human_value = func(tag.value)
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else:
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human_value = tag.human_value
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if key2:
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human_value += ' ' + metadata[key2].human_value
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self.model.add((tag.label, human_value), node=node)
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self.model.tree.expand_all()
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self.set_has_data(self.model.count > 0)
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return self.view.get_has_data(full_path)
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