/usr/share/sugar/activities/Read.activity/comicadapter.py is in sugar-read-activity 115~dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import zipfile
from gettext import gettext as _
from gi.repository import GObject
from gi.repository import Gtk
from sugar3.graphics.alert import Alert
from imageview import ImageViewer
IMAGE_ENDINGS = ('.png', '.jpg', '.jpeg', '.gif', '.bmp', '.tiff', '.tif')
class ComicViewer(GObject.GObject):
__gsignals__ = {
'zoom-changed': (GObject.SignalFlags.RUN_FIRST, GObject.TYPE_NONE,
([int])),
'page-changed': (GObject.SignalFlags.RUN_FIRST, GObject.TYPE_NONE,
([int, int]))
}
def setup(self, activity):
self._activity = activity
self._zip = None
self._images = []
self._index = 0
self._rotate = 0
self._old_zoom = 1.0
self._sw = Gtk.ScrolledWindow()
self._sw.set_policy(Gtk.PolicyType.ALWAYS, Gtk.PolicyType.ALWAYS)
self._activity._hbox.pack_start(self._sw, True, True, 0)
self._sw.show()
self._view = ImageViewer()
self._view.set_zoom(1.0)
self._view.connect('setup-new-surface', self.__new_surface_cb)
self._sw.add(self._view)
self._view.show()
def load_document(self, file_path):
try:
self._zip = zipfile.ZipFile(file_path.replace('file://', ''))
except (zipfile.BadZipfile, IOError):
pass
files = self._zip.namelist()
files.sort()
self._images = [i for i in files if i.endswith(IMAGE_ENDINGS)]
if len(self._images) == 0:
alert = Alert()
alert.props.title = _('Can not read Comic Book Archive')
alert.props.msg = _('No readable images were found')
self._activity.add_alert(alert)
return
self.set_current_page(0)
def load_metadata(self, activity):
if activity.metadata.get('view-zoom'):
self.set_zoom(activity.metadata.get('view-zoom'))
def update_metadata(self, activity):
activity.metadata['view-zoom'] = self.get_zoom()
def get_current_page(self):
return self._index
def set_current_page(self, page):
if len(self._images) == 0:
return
from_ = self._index
self._index = page
filename = self._images[page]
data = self._zip.read(filename)
self._view.set_data(data)
self.emit('page-changed', from_, self._index)
def __new_surface_cb(self, view):
self._view.set_rotate(self._rotate)
self._view.update_adjustments()
self._sw.get_hadjustment().set_value(0)
self._sw.get_vadjustment().set_value(0)
self._view.update_adjustments()
self._view.queue_draw()
def next_page(self):
if self._index + 1 < self.get_pagecount():
self.set_current_page(self._index + 1)
def previous_page(self):
if self._index - 1 >= 0:
self.set_current_page(self._index - 1)
def can_rotate(self):
return True
def rotate_left(self):
self._view.rotate_anticlockwise()
self._rotate -= 1
if self._rotate == -4:
self._rotate = 0
def rotate_right(self):
self._view.rotate_clockwise()
self._rotate += 1
if self._rotate == 4:
self._rotate = 0
def get_pagecount(self):
return len(self._images)
def connect_zoom_handler(self, handler):
self.connect('zoom-changed', handler)
def _zoom_changed(self):
self.emit('zoom-changed', self.get_zoom())
def get_zoom(self):
return self._view.get_zoom()
def set_zoom(self, value):
self._view.set_zoom(value)
self._zoom_changed()
def zoom_in(self):
self._view.zoom_in()
self._zoom_changed()
def can_zoom_in(self):
return self._view.can_zoom_in()
def zoom_out(self):
self._view.zoom_out()
self._zoom_changed()
def can_zoom_out(self):
return self._view.can_zoom_out()
def can_zoom_to_width(self):
return True
def zoom_to_width(self):
self._view.zoom_to_width()
self._zoom_changed()
def zoom_to_best_fit(self):
self._view.zoom_to_fit()
self._zoom_changed()
def can_zoom_to_actual_size(self):
return True
def zoom_to_actual_size(self):
self._view.zoom_original()
self._zoom_changed()
def connect_page_changed_handler(self, handler):
self.connect('page-changed', handler)
def scroll(self, scrolltype, horizontal):
if scrolltype == Gtk.ScrollType.PAGE_BACKWARD:
self.previous_page()
elif scrolltype == Gtk.ScrollType.PAGE_FORWARD:
self.next_page()
elif scrolltype == Gtk.ScrollType.STEP_BACKWARD:
self._scroll_step(False, horizontal)
elif scrolltype == Gtk.ScrollType.STEP_FORWARD:
self._scroll_step(True, horizontal)
elif scrolltype == Gtk.ScrollType.START:
self.set_current_page(1)
elif scrolltype == Gtk.ScrollType.END:
self.set_current_page(self._document.get_n_pages())
else:
pass
def _scroll_step(self, forward, horizontal):
if horizontal:
adj = self._sw.get_hadjustment()
else:
adj = self._sw.get_vadjustment()
value = adj.get_value()
step = adj.get_step_increment()
if forward:
adj.set_value(value + step)
else:
adj.set_value(value - step)
# Not relevant for non-text documents
def can_highlight(self):
return False
def can_do_text_to_speech(self):
return False
def find_set_highlight_search(self, set_highlight_search):
pass
def find_next(self):
pass
def find_previous(self):
pass
def update_toc(self, activity):
pass
def handle_link(self, link):
pass
def get_current_link(self):
return ''
def get_link_iter(self, link):
return None
def copy(self):
# Copy is for the selected text
pass
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