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# This file is part of the Frescobaldi project, http://www.frescobaldi.org/
#
# Copyright (c) 2008 - 2014 by Wilbert Berendsen
#
# 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
# See http://www.gnu.org/licenses/ for more information.
"""
Some useful tools dealing with popplerqt5 (PDF) documents.
"""
import os
class Document(object):
"""Represents a (lazily) loaded PDF document."""
def __init__(self, filename=''):
self._filename = filename
self._document = None
self._dirty = True
def filename(self):
"""Returns the filename, set on init or via setFilename()."""
return self._filename
def setFilename(self, filename):
"""Sets a filename.
The document will be reloaded next time it is requested.
"""
self._filename = filename
self._dirty = True
def name(self):
"""Returns the filename without path."""
return os.path.basename(self._filename)
def document(self):
"""Returns the PDF document the filename points to, reloading if the filename was set.
Can return None, in case the document failed to load.
"""
if self._dirty:
self._document = self.load()
self._dirty = False
return self._document
def load(self):
"""Should load and return the popplerqt5 Document for our filename."""
try:
import popplerqt5
except ImportError:
return
return popplerqt5.Poppler.Document.load(self._filename)
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