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import gobject
import logging
import epubview
import speech
from cStringIO import StringIO
_logger = logging.getLogger('read-activity')
class EpubViewer(epubview.EpubView):
def __init__(self):
epubview.EpubView.__init__(self)
def setup(self, activity):
self.set_screen_dpi(activity.dpi)
self.connect('selection-changed',
activity._view_selection_changed_cb)
activity._hbox.pack_start(self, expand=True, fill=True)
self.show_all()
# text to speech initialization
self.current_word = 0
self.word_tuples = []
def load_document(self, file_path):
self.set_document(EpubDocument(self, file_path.replace('file://', '')))
speech.highlight_cb = self.highlight_next_word
speech.end_text_cb = self.get_more_text
def load_metadata(self, activity):
self.metadata = activity.metadata
if not self.metadata['title_set_by_user'] == '1':
title = self._epub._info._get_title()
if title:
self.metadata['title'] = title
def update_metadata(self, activity):
pass
def zoom_to_width(self):
pass
def zoom_to_best_fit(self):
pass
def zoom_to_actual_size(self):
pass
def can_zoom_to_width(self):
return False
def can_highlight(self):
return False
def can_do_text_to_speech(self):
return True
def get_marked_words(self):
"Adds a mark between each word of text."
i = self.current_word
file_str = StringIO()
file_str.write('<speak> ')
end_range = i + 40
if end_range > len(self.word_tuples):
end_range = len(self.word_tuples)
for word_tuple in self.word_tuples[self.current_word:end_range]:
file_str.write('<mark name="' + str(i) + '"/>' + word_tuple[2])
i = i + 1
file_str.write('</speak>')
return file_str.getvalue()
def get_more_text(self):
self.current_word = self.current_word + 1
if self.current_word < len(self.word_tuples):
speech.stop()
more_text = self.get_marked_words()
speech.play(more_text)
def highlight_next_word(self, word_count):
self.current_word = word_count
self._view.highlight_next_word()
return True
def connect_zoom_handler(self, handler):
self._zoom_handler = handler
self._view_notify_zoom_handler = \
self.connect('notify::scale', handler)
return self._view_notify_zoom_handler
def connect_page_changed_handler(self, handler):
self.connect('page-changed', handler)
def _try_load_page(self, n):
if self._ready:
self._load_page(n)
return False
else:
return True
def set_screen_dpi(self, dpi):
return
def find_set_highlight_search(self, set_highlight_search):
#TODO : what is this?
return
def set_current_page(self, n):
# When the book is being loaded, calling this does not help
# In such a situation, we go into a loop and try to load the
# supplied page when the book has loaded completely
n += 1
if self._ready:
self._load_page(n)
else:
gobject.timeout_add(200, self._try_load_page, n)
def get_current_page(self):
return int(self._loaded_page - 1)
def update_toc(self, activity):
if self._epub.has_document_links():
activity._navigator_toolbar_button.show()
activity._navigator.show_all()
activity._toc_model = self._epub.get_links_model()
activity._navigator.set_model(activity._toc_model)
activity._navigator.set_active(0)
return True
else:
return False
def find_changed(self, job, page=None):
self._find_changed(job)
def handle_link(self, link):
self._load_file(link)
def setup_find_job(self, text, updated_cb):
self._find_job = JobFind(document=self._epub,
start_page=0, n_pages=self.get_pagecount(),
text=text, case_sensitive=False)
self._find_updated_handler = self._find_job.connect('updated',
updated_cb)
return self._find_job, self._find_updated_handler
class EpubDocument(epubview.Epub):
def __init__(self, view, docpath):
epubview.Epub.__init__(self, docpath)
self._page_cache = view
def get_n_pages(self):
return int(self._page_cache.get_pagecount())
def has_document_links(self):
return True
def get_links_model(self):
return self.get_toc_model()
class JobFind(epubview.JobFind):
def __init__(self, document, start_page, n_pages, text,
case_sensitive=False):
epubview.JobFind.__init__(self, document, start_page, n_pages, text,
case_sensitive=False)
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