Current File : //usr/lib/calibre/calibre/gui2/convert/heuristics.py
__license__ = 'GPL 3'
__copyright__ = '2011, John Schember <john@nachtimwald.com>'
__docformat__ = 'restructuredtext en'
from qt.core import Qt
from calibre.gui2 import gprefs
from calibre.gui2.convert.heuristics_ui import Ui_Form
from calibre.gui2.convert import Widget
from calibre.utils.localization import localize_user_manual_link
from calibre.ebooks.conversion.config import OPTIONS
class HeuristicsWidget(Widget, Ui_Form):
TITLE = _('Heuristic\nprocessing')
HELP = _('Modify the document text and structure using common patterns.')
COMMIT_NAME = 'heuristics'
ICON = I('heuristics.png')
def __init__(self, parent, get_option, get_help, db=None, book_id=None):
Widget.__init__(self, parent, OPTIONS['pipe']['heuristics'])
self.db, self.book_id = db, book_id
self.rssb_defaults = ['', '<hr />', '∗ ∗ ∗', '• • •', '♦ ♦ ♦',
'† †', '‡ ‡ ‡', '∞ ∞ ∞', '¤ ¤ ¤', '§']
self.initialize_options(get_option, get_help, db, book_id)
self.load_histories()
self.opt_enable_heuristics.stateChanged.connect(self.enable_heuristics)
self.opt_unwrap_lines.stateChanged.connect(self.enable_unwrap)
self.enable_heuristics(self.opt_enable_heuristics.checkState())
try:
self.help_label.setText(self.help_label.text() % localize_user_manual_link(
'https://manual.calibre-ebook.com/conversion.html#heuristic-processing'))
except TypeError:
pass # link already localized
def restore_defaults(self, get_option):
Widget.restore_defaults(self, get_option)
self.save_histories()
rssb_hist = gprefs['replace_scene_breaks_history']
for x in self.rssb_defaults:
if x in rssb_hist:
del rssb_hist[rssb_hist.index(x)]
gprefs['replace_scene_breaks_history'] = self.rssb_defaults + gprefs['replace_scene_breaks_history']
self.load_histories()
def commit_options(self, save_defaults=False):
self.save_histories()
return Widget.commit_options(self, save_defaults)
def break_cycles(self):
Widget.break_cycles(self)
try:
self.opt_enable_heuristics.stateChanged.disconnect()
self.opt_unwrap_lines.stateChanged.disconnect()
except:
pass
def set_value_handler(self, g, val):
if val is None and g is self.opt_html_unwrap_factor:
g.setValue(0.0)
return True
if not val and g is self.opt_replace_scene_breaks:
g.lineEdit().setText('')
return True
def load_histories(self):
val = str(self.opt_replace_scene_breaks.currentText())
self.opt_replace_scene_breaks.clear()
self.opt_replace_scene_breaks.lineEdit().setText('')
rssb_hist = gprefs.get('replace_scene_breaks_history', self.rssb_defaults)
if val in rssb_hist:
del rssb_hist[rssb_hist.index(val)]
rssb_hist.insert(0, val)
for v in rssb_hist:
# Ensure we don't have duplicate items.
if self.opt_replace_scene_breaks.findText(v) == -1:
self.opt_replace_scene_breaks.addItem(v)
self.opt_replace_scene_breaks.setCurrentIndex(0)
def save_histories(self):
rssb_history = []
history_pats = [str(self.opt_replace_scene_breaks.lineEdit().text())] + [str(self.opt_replace_scene_breaks.itemText(i))
for i in range(self.opt_replace_scene_breaks.count())]
for p in history_pats[:10]:
# Ensure we don't have duplicate items.
if p not in rssb_history:
rssb_history.append(p)
gprefs['replace_scene_breaks_history'] = rssb_history
def enable_heuristics(self, state):
state = state == Qt.CheckState.Checked
self.heuristic_options.setEnabled(state)
def enable_unwrap(self, state):
if state == Qt.CheckState.Checked:
state = True
else:
state = False
self.opt_html_unwrap_factor.setEnabled(state)
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