def test_timezone_lookups():
"""Ensure that the timezone can be discovered from the map"""
# Be very careful to reset everything so that we're sure that
# we're not just finding the timezone from gsettings.
teardown()
gst = GSettings('camera', 'canon_canon_powershot_a590_is')
gst.reset('found-timezone')
gst.reset('offset')
gst.set_string('timezone-method', 'lookup')
Camera.cache.clear()
# Open just the GPX
gui.open_files(GPXFILES)
# At this point the camera hasn't been informed of the timezone
assert gst.get_string('found-timezone') == ''
# Opening a photo should place it on the map.
gui.open_files([IMGFILES[0]])
print(Camera.instances)
print(gst.get_string('found-timezone'))
assert gst.get_string('found-timezone') == 'America/Edmonton'
assert Photograph.instances
assert Camera.instances
photo = list(Photograph.instances).pop()
assert photo.latitude == 53.530476
assert photo.longitude == -113.450635
class TrackFile():
"""Parent class for all types of GPS track files.
Subclasses must implement at least element_end.
"""
range = []
parse = XMLSimpleParser
instances = set()
@staticmethod
def update_range():
"""Ensure that TrackFile.range contains the correct info."""
while TrackFile.range:
TrackFile.range.pop()
if not TrackFile.instances:
Widgets.empty_trackfile_list.show()
else:
Widgets.empty_trackfile_list.hide()
TrackFile.range.extend([min(points), max(points)])
@staticmethod
def get_bounding_box():
"""Determine the smallest box that contains all loaded polygons."""
bounds = Champlain.BoundingBox.new()
for trackfile in TrackFile.instances:
for polygon in trackfile.polygons:
bounds.compose(polygon.get_bounding_box())
return bounds
@staticmethod
def query_all_timezones():
"""Try to determine the most likely timezone the user is in.
First we check all TrackFiles for the timezone at their starting point,
and if they are all identical, we report it. If they do not match, then
the user must travel a lot, and then we simply have no idea what
timezone is likely to be the one that their camera is set to.
"""
zones = set()
for trackfile in TrackFile.instances:
zones.add(trackfile.start.geotimezone)
return None if len(zones) != 1 else zones.pop()
@staticmethod
def clear_all(*ignore):
"""Forget all GPX data, start over with a clean slate."""
for trackfile in list(TrackFile.instances):
trackfile.destroy()
points.clear()
@staticmethod
def load_from_file(uri):
"""Determine the correct subclass to instantiate.
Also time everything and report how long it took. Raises OSError if
the file extension is unknown, or no track points were found.
"""
start_time = clock()
try:
gpx = globals()[uri[-3:].upper() + 'File'](uri)
except KeyError:
raise OSError
Widgets.status_message(
_('%d points loaded in %.2fs.') %
(len(gpx.tracks), clock() - start_time), True)
if len(gpx.tracks) < 2:
return
TrackFile.instances.add(gpx)
MapView.emit('realize')
MapView.set_zoom_level(MapView.get_max_zoom_level())
MapView.ensure_visible(TrackFile.get_bounding_box(), False)
TrackFile.update_range()
Camera.set_all_found_timezone(gpx.start.geotimezone)
def __init__(self, filename, root, watch):
self.watchlist = watch
self.filename = filename
self.progress = Widgets.progressbar
self.polygons = set()
self.widgets = Builder('trackfile')
self.append = None
self.tracks = {}
self.clock = clock()
self.gst = GSettings('trackfile', basename(filename))
if self.gst.get_string('start-timezone') is '':
# Then this is the first time this file has been loaded
# and we should honor the user-selected global default
# track color instead of using the schema-defined default
self.gst.set_value('track-color', Gst.get_value('track-color'))
self.gst.bind_with_convert('track-color', self.widgets.colorpicker,
'color', lambda x: Gdk.Color(*x), lambda x:
(x.red, x.green, x.blue))
self.widgets.trackfile_label.set_text(basename(filename))
self.widgets.unload.connect('clicked', self.destroy)
self.widgets.colorpicker.set_title(basename(filename))
self.widgets.colorpicker.connect('color-set', track_color_changed,
self.polygons)
Widgets.trackfile_unloads_group.add_widget(self.widgets.unload)
Widgets.trackfile_colors_group.add_widget(self.widgets.colorpicker)
Widgets.trackfiles_group.add_widget(self.widgets.trackfile_label)
self.parse(filename, root, watch, self.element_start, self.element_end)
if not self.tracks:
raise OSError('No points found')
points.update(self.tracks)
keys = self.tracks.keys()
self.alpha = min(keys)
self.omega = max(keys)
self.start = Coordinates(latitude=self.tracks[self.alpha].lat,
longitude=self.tracks[self.alpha].lon)
self.gst.set_string('start-timezone', self.start.lookup_geodata())
Widgets.trackfiles_view.add(self.widgets.trackfile_settings)
def element_start(self, name, attributes=None):
"""Determine when new tracks start and create a new Polygon."""
if name == self.watchlist[0]:
polygon = Polygon()
self.polygons.add(polygon)
self.append = polygon.append_point
self.widgets.colorpicker.emit('color-set')
return False
return True
def element_end(self, name=None, state=None):
"""Occasionally redraw the screen so the user can see activity."""
if clock() - self.clock > .2:
self.progress.pulse()
while Gtk.events_pending():
Gtk.main_iteration()
self.clock = clock()
def destroy(self, button=None):
"""Die a horrible death."""
for polygon in self.polygons:
MapView.remove_layer(polygon)
self.polygons.clear()
self.widgets.trackfile_settings.destroy()
del self.cache[self.filename]
TrackFile.instances.discard(self)
points.clear()
for trackfile in TrackFile.instances:
points.update(trackfile.tracks)
TrackFile.update_range()
class TrackFile():
"""Parent class for all types of GPS track files.
Subclasses must implement at least element_end.
"""
range = []
parse = XMLSimpleParser
instances = set()
@staticmethod
def update_range():
"""Ensure that TrackFile.range contains the correct info."""
while TrackFile.range:
TrackFile.range.pop()
if not TrackFile.instances:
Widgets.empty_trackfile_list.show()
else:
Widgets.empty_trackfile_list.hide()
TrackFile.range.extend([min(points), max(points)])
@staticmethod
def get_bounding_box():
"""Determine the smallest box that contains all loaded polygons."""
bounds = Champlain.BoundingBox.new()
for trackfile in TrackFile.instances:
for polygon in trackfile.polygons:
bounds.compose(polygon.get_bounding_box())
return bounds
@staticmethod
def query_all_timezones():
"""Try to determine the most likely timezone the user is in.
First we check all TrackFiles for the timezone at their starting point,
and if they are all identical, we report it. If they do not match, then
the user must travel a lot, and then we simply have no idea what
timezone is likely to be the one that their camera is set to.
"""
zones = set()
for trackfile in TrackFile.instances:
zones.add(trackfile.start.geotimezone)
return None if len(zones) != 1 else zones.pop()
@staticmethod
def clear_all(*ignore):
"""Forget all GPX data, start over with a clean slate."""
for trackfile in list(TrackFile.instances):
trackfile.destroy()
points.clear()
@staticmethod
def load_from_file(uri):
"""Determine the correct subclass to instantiate.
Also time everything and report how long it took. Raises OSError if
the file extension is unknown, or no track points were found.
"""
start_time = clock()
try:
gpx = globals()[uri[-3:].upper() + 'File'](uri)
except KeyError:
raise OSError
Widgets.status_message(_('%d points loaded in %.2fs.') %
(len(gpx.tracks), clock() - start_time), True)
if len(gpx.tracks) < 2:
return
TrackFile.instances.add(gpx)
MapView.emit('realize')
MapView.set_zoom_level(MapView.get_max_zoom_level())
MapView.ensure_visible(TrackFile.get_bounding_box(), False)
TrackFile.update_range()
Camera.set_all_found_timezone(gpx.start.geotimezone)
def __init__(self, filename, root, watch):
self.watchlist = watch
self.filename = filename
self.progress = Widgets.progressbar
self.polygons = set()
self.widgets = Builder('trackfile')
self.append = None
self.tracks = {}
self.clock = clock()
self.gst = GSettings('trackfile', basename(filename))
if self.gst.get_string('start-timezone') is '':
# Then this is the first time this file has been loaded
# and we should honor the user-selected global default
# track color instead of using the schema-defined default
self.gst.set_value('track-color', Gst.get_value('track-color'))
self.gst.bind_with_convert(
'track-color',
self.widgets.colorpicker,
'color',
lambda x: Gdk.Color(*x),
lambda x: (x.red, x.green, x.blue))
self.widgets.trackfile_label.set_text(basename(filename))
self.widgets.unload.connect('clicked', self.destroy)
self.widgets.colorpicker.set_title(basename(filename))
self.widgets.colorpicker.connect('color-set',
track_color_changed,
self.polygons)
Widgets.trackfile_unloads_group.add_widget(self.widgets.unload)
Widgets.trackfile_colors_group.add_widget(self.widgets.colorpicker)
Widgets.trackfiles_group.add_widget(self.widgets.trackfile_label)
self.parse(filename, root, watch, self.element_start, self.element_end)
if not self.tracks:
raise OSError('No points found')
points.update(self.tracks)
keys = self.tracks.keys()
self.alpha = min(keys)
self.omega = max(keys)
self.start = Coordinates(latitude = self.tracks[self.alpha].lat,
longitude = self.tracks[self.alpha].lon)
self.gst.set_string('start-timezone', self.start.lookup_geodata())
Widgets.trackfiles_view.add(self.widgets.trackfile_settings)
def element_start(self, name, attributes=None):
"""Determine when new tracks start and create a new Polygon."""
if name == self.watchlist[0]:
polygon = Polygon()
self.polygons.add(polygon)
self.append = polygon.append_point
self.widgets.colorpicker.emit('color-set')
return False
return True
def element_end(self, name=None, state=None):
"""Occasionally redraw the screen so the user can see activity."""
if clock() - self.clock > .2:
self.progress.pulse()
while Gtk.events_pending():
Gtk.main_iteration()
self.clock = clock()
def destroy(self, button=None):
"""Die a horrible death."""
for polygon in self.polygons:
MapView.remove_layer(polygon)
self.polygons.clear()
self.widgets.trackfile_settings.destroy()
del self.cache[self.filename]
TrackFile.instances.discard(self)
points.clear()
for trackfile in TrackFile.instances:
points.update(trackfile.tracks)
TrackFile.update_range()