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Speed up device connection when there are lots of books on the device by not geenrating cover thumbnails unless they are actually needed.

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Kovid Goyal 2013-01-21 14:31:30 +05:30
commit 268342b9ae
1 changed files with 24 additions and 33 deletions
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57
src/calibre/gui2/device.py
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@ -1661,9 +1661,11 @@ class DeviceMixin(object): # {{{
update_metadata = device_prefs['manage_device_metadata'] == 'on_connect'
get_covers = False
desired_thumbnail_height = 0
if update_metadata and self.device_manager.is_device_connected:
if self.device_manager.device.WANTS_UPDATED_THUMBNAILS:
get_covers = True
desired_thumbnail_height = self.device_manager.device.THUMBNAIL_HEIGHT
# Force a reset if the caches are not initialized
if reset or not hasattr(self, 'db_book_title_cache'):
@ -1698,17 +1700,28 @@ class DeviceMixin(object): # {{{
# will be used by books_on_device to indicate matches. While we are
# going by, update the metadata for a book if automatic management is on
def update_book(id_, book) :
if not update_metadata:
return
mi = db.get_metadata(id_, index_is_id=True, get_cover=get_covers)
book.smart_update(mi, replace_metadata=True)
if get_covers:
if book.cover and os.access(book.cover, os.R_OK):
book.thumbnail = self.cover_to_thumbnail(open(book.cover, 'rb').read())
else:
book.thumbnail = self.default_thumbnail
for booklist in booklists:
for book in booklist:
book.in_library = None
if getattr(book, 'uuid', None) in self.db_book_uuid_cache:
id_ = db_book_uuid_cache[book.uuid]
if (update_metadata and
db.metadata_last_modified(id_, index_is_id=True) !=
getattr(book, 'last_modified', None)):
mi = db.get_metadata(id_, index_is_id=True,
get_cover=get_covers)
book.smart_update(mi, replace_metadata=True)
if (db.metadata_last_modified(id_, index_is_id=True) !=
getattr(book, 'last_modified', None)
or (not book.thumbnail
or max(book.thumbnail[0], book.thumbnail[1]) !=
desired_thumbnail_height)):
update_book(id_, book)
book.in_library = 'UUID'
# ensure that the correct application_id is set
book.application_id = id_
@ -1721,23 +1734,15 @@ class DeviceMixin(object): # {{{
# will match if any of the db_id, author, or author_sort
# also match.
if getattr(book, 'application_id', None) in d['db_ids']:
if update_metadata:
id_ = getattr(book, 'application_id', None)
book.smart_update(db.get_metadata(id_,
index_is_id=True,
get_cover=get_covers),
replace_metadata=True)
id_ = getattr(book, 'application_id', None)
update_book(id_, book)
book.in_library = 'APP_ID'
# app_id already matches a db_id. No need to set it.
continue
# Sonys know their db_id independent of the application_id
# in the metadata cache. Check that as well.
if getattr(book, 'db_id', None) in d['db_ids']:
if update_metadata:
book.smart_update(db.get_metadata(book.db_id,
index_is_id=True,
get_cover=get_covers),
replace_metadata=True)
update_book(book.db_id, book)
book.in_library = 'DB_ID'
book.application_id = book.db_id
continue
@ -1752,20 +1757,12 @@ class DeviceMixin(object): # {{{
book_authors = clean_string(authors_to_string(book.authors))
if book_authors in d['authors']:
id_ = d['authors'][book_authors]
if update_metadata:
book.smart_update(db.get_metadata(id_,
index_is_id=True,
get_cover=get_covers),
replace_metadata=True)
update_book(id_, book)
book.in_library = 'AUTHOR'
book.application_id = id_
elif book_authors in d['author_sort']:
id_ = d['author_sort'][book_authors]
if update_metadata:
book.smart_update(db.get_metadata(id_,
index_is_id=True,
get_cover=get_covers),
replace_metadata=True)
update_book(id_, book)
book.in_library = 'AUTH_SORT'
book.application_id = id_
else:
@ -1779,12 +1776,6 @@ class DeviceMixin(object): # {{{
if update_metadata:
if self.device_manager.is_device_connected:
if self.device_manager.device.WANTS_UPDATED_THUMBNAILS:
for blist in booklists:
for book in blist:
if book.cover and os.access(book.cover, os.R_OK):
book.thumbnail = \
self.cover_to_thumbnail(open(book.cover, 'rb').read())
plugboards = self.library_view.model().db.prefs.get('plugboards', {})
self.device_manager.sync_booklists(
FunctionDispatcher(self.metadata_synced), booklists,