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main.py
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import os
import shutil
import zipfile
import os.path
from calibre.gui2 import Dispatcher
from calibre.gui_launch import ebook_viewer
from calibre.ebooks.markdown import markdown
from calibre.ptempfile import PersistentTemporaryFile
from calibre.ebooks.conversion.config import get_output_formats
from calibre.utils.localization import get_lang, lang_as_iso639_1
from calibre_plugins.ebook_translator import EbookTranslator
from calibre_plugins.ebook_translator.config import (
init_config, save_config, get_config, set_config)
from calibre_plugins.ebook_translator.utils import (
is_proxy_availiable, get_language_codes)
from calibre_plugins.ebook_translator.translator import TranslatorBuilder
from calibre_plugins.ebook_translator.cache import TranslationCache
try:
from qt.core import (
Qt, QLabel, QDialog, QWidget, QLineEdit, QMessageBox, QPushButton,
QTabWidget, QComboBox, QHeaderView, QHBoxLayout, QVBoxLayout,
QGroupBox, QTableWidget, QTableWidgetItem, QRegularExpression,
QFileDialog, QIntValidator, QModelIndex, QRadioButton, QSizePolicy,
QCheckBox, QFrame, QValidator, QTextBrowser, QTextDocument,
QRegularExpressionValidator)
except ImportError:
from PyQt5.Qt import (
Qt, QLabel, QDialog, QWidget, QLineEdit, QMessageBox, QTabWidget,
QComboBox, QPushButton, QHeaderView, QHBoxLayout, QVBoxLayout,
QGroupBox, QTableWidget, QTableWidgetItem, QRegularExpression,
QFileDialog, QIntValidator, QModelIndex, QRadioButton, QSizePolicy,
QCheckBox, QFrame, QValidator, QTextBrowser, QTextDocument,
QRegularExpressionValidator)
load_translations()
class MainWindowFrame(QDialog):
def __init__(self, plugin, icon, ebooks):
self.gui = plugin.gui
QDialog.__init__(self, self.gui)
self.plugin = plugin
self.icon = icon
self.ebooks = ebooks
self.jobs = {}
self.lang_codes = get_language_codes()
self.config = {
'to_library': get_config('to_library', True),
'output_path': get_config('output_path', None),
'translate_engine': get_config('translate_engine', 'Google'),
'api_key': get_config('api_key', {}),
'proxy_enabled': get_config('proxy_enabled', False),
'proxy_setting': get_config('proxy_setting', []),
'request_attempt': get_config('request_attempt', 3),
'request_interval': get_config('request_interval', 5),
'cache_enabled': get_config('cache_enabled', True),
'log_translation': get_config('log_translation', True),
}
init_config(self.config.items())
if not getattr(self.gui, 'bookfere_translate_ebook_jobs', None):
self.gui.bookfere_translate_ebook_jobs = []
layout = QVBoxLayout(self)
self.tabs = QTabWidget()
self.tabs.addTab(self.layout_translate(), _('Translate'))
config_widget = QWidget()
self.config_layout = QVBoxLayout(config_widget)
self.tabs.addTab(self.layout_config(), _('Setting'))
self.tabs.addTab(self.layout_about(), _('About'))
self.tabs.setStyleSheet('QTabBar::tab {width:100px;}')
layout.addWidget(self.tabs)
self.tabs.tabBarClicked.connect(self.tabs_bar_clicked_action)
info = QWidget()
info.setStyleSheet('color:grey')
info_layout = QHBoxLayout(info)
info_layout.setContentsMargins(0, 0, 0, 0)
app_author = EbookTranslator.author
site = QLabel('♥ by <a href="https://{0}">{0}</a>'.format(app_author))
site.setOpenExternalLinks(True)
info_layout.addWidget(site)
info_layout.addStretch(1)
link = QLabel((
'<a href="https://github.com/bookfere/'
'Ebook-Translator-Calibre-Plugin">GitHub</a>'
' ｜ <a href="https://{0}/post/1057.html">{1}</a>'
' ｜ <a href="https://{0}/donate">{2}</a>'
).format(app_author, _('Feedback'), _('Donate')))
link.setOpenExternalLinks(True)
info_layout.addWidget(link)
layout.addWidget(info)
def tabs_bar_clicked_action(self, index):
if index == 1:
self.recount_translation_cache()
def layout_translate(self):
widget = QWidget()
layout = QVBoxLayout(widget)
table = QTableWidget()
table.setStyleSheet('QComboBox{border:0;}')
table.setRowCount(len(self.ebooks))
table.setColumnCount(5)
table.setHorizontalHeaderLabels([
_('Title'), _('Input Format'), _('Output Format'),
_('Source Language'), _('Target Language')
])
header = table.horizontalHeader()
try:
stretch = QHeaderView.ResizeMode.Stretch
except Exception:
stretch = QHeaderView.Stretch
header.setSectionResizeMode(0, stretch)
for index, (
book_id, title, fmts, ifmt, ofmt, slang, tlang
) in self.ebooks.items():
ebook_title = QTableWidgetItem(title)
ebook_title.setSizeHint(table.sizeHint())
table.setItem(index, 0, ebook_title)
input_fmt = QComboBox()
for fmt in sorted(fmts.keys()):
input_fmt.addItem(fmt)
input_fmt.setStyleSheet('text-transform:uppercase;')
table.setCellWidget(index, 1, input_fmt)
self.alter_ebooks_data(index, 3, input_fmt.currentText())
input_fmt.currentTextChanged.connect(
lambda fmt, row=index: self.alter_ebooks_data(
row, 3, fmt.lower()))
output_fmt = QComboBox()
for fmt in get_output_formats('epub'):
output_fmt.addItem(fmt)
output_fmt.setStyleSheet('text-transform:uppercase;')
table.setCellWidget(index, 2, output_fmt)
self.alter_ebooks_data(index, 4, output_fmt.currentText())
output_fmt.currentTextChanged.connect(
lambda fmt, row=index: self.alter_ebooks_data(
row, 4, fmt.lower()))
source_lang = QComboBox()
book_lang = lang_as_iso639_1(slang)
for lang, code in self.lang_codes.items():
if book_lang is not None and not code.startswith(book_lang):
source_lang.addItem(lang)
# recommend language selection
source_lang.model().sort(0, Qt.AscendingOrder)
for lang, code in self.lang_codes.items():
if book_lang is not None and code.startswith(book_lang):
source_lang.insertItem(0, lang)
source_lang.insertItem(0, _('Auto detect'))
source_lang.setCurrentIndex(0)
table.setCellWidget(index, 3, source_lang)
self.alter_ebooks_data(index, 5, source_lang.currentText())
source_lang.currentTextChanged.connect(
lambda lang, row=index: self.alter_ebooks_data(row, 5, lang))
target_lang = QComboBox()
current_lang = None
codes = self.lang_codes
for lang, code in [(k, codes[k]) for k in codes]:
target_lang.addItem(lang)
if code.replace('-', '_').lower() == get_lang().lower():
current_lang = lang
target_lang.model().sort(0, Qt.AscendingOrder)
target_lang.setCurrentText(current_lang)
table.setCellWidget(index, 4, target_lang)
self.alter_ebooks_data(index, 6, target_lang.currentText())
target_lang.currentTextChanged.connect(
lambda lang, row=index: self.alter_ebooks_data(row, 6, lang))
layout.addWidget(table)
start_button = QPushButton(_('Translate'))
start_button.setStyleSheet(
'padding:0;height:48;font-size:20px;color:royalblue;'
'text-transform:uppercase;')
start_button.clicked.connect(self.translate_ebooks)
layout.addWidget(start_button)
# Change the book title
table.itemChanged.connect(
lambda item: self.alter_ebooks_data(item.row(), 1, item.text()))
return widget
def alter_ebooks_data(self, row, index, data):
self.ebooks[row][index] = data
def translate_ebooks(self):
to_library = get_config('to_library')
output_path = get_config('output_path')
if not to_library and not os.path.exists(output_path):
return self.pop_alert(
_('The specified path does not exist.'), 'warning')
for book_id, title, fmts, ifmt, ofmt, slang, tlang in \
self.ebooks.values():
self.translate_ebook(
book_id, title, fmts, ifmt, ofmt, slang, tlang)
self.ebooks.clear()
self.done(0)
def translate_ebook(self, book_id, title, fmts, ifmt, ofmt, slang, tlang):
input_path = fmts[ifmt]
output_path = PersistentTemporaryFile(suffix='.' + ofmt).name
job = self.gui.job_manager.run_job(
Dispatcher(self.translate_done),
'arbitrary_n',
args=(
'calibre_plugins.ebook_translator.convertion',
'convert_book',
(input_path, output_path, slang, tlang),
),
description=(_('[{} > {}] Translating "{}"')
.format(slang, tlang, title)))
job.same_format = ifmt == ofmt
self.jobs[job] = book_id, title, ofmt, output_path
self.gui.bookfere_translate_ebook_jobs.append(job)
def translate_done(self, job):
self.gui.bookfere_translate_ebook_jobs.remove(job)
if job.failed:
return self.gui.job_exception(
job, dialog_title=_('Failed to translate'))
book_id, title, ofmt, temp_file = self.jobs.pop(job)
if not get_config('to_library'):
output_path = os.path.join(
get_config('output_path'), '%s.%s' % (title, ofmt))
shutil.move(temp_file, output_path)
else:
if job.same_format:
self.gui.current_db.save_original_format(
book_id, ofmt, notify=False)
with open(temp_file, 'rb') as data:
self.gui.current_db.add_format(
book_id, ofmt, data, index_is_id=True)
os.remove(temp_file)
self.gui.tags_view.recount()
if self.gui.current_view() is self.gui.library_view:
lv = self.gui.library_view
lv.model().refresh_ids((book_id,))
current = lv.currentIndex()
if current.isValid():
lv.model().current_changed(current, QModelIndex())
self.gui.status_bar.show_message(
job.description + ' ' + _('completed'), 5000)
self.gui.proceed_question(
lambda payload: payload(['ebook-viewer', output_path]),
ebook_viewer,
job.log_path,
_('Ebook Translation Log'),
_('Translation Completed'),
_('The translation of "{}" was completed. '
'Do you want to open the book?').format(title),
log_is_file=True,
icon=self.icon,
)
def layout_config(self):
widget = QWidget()
layout = QVBoxLayout(widget)
radio_group = QGroupBox(_('Output Path'))
radio_layout = QHBoxLayout()
self.library_radio = QRadioButton(_('Library'))
self.path_radio = QRadioButton(_('Path'))
radio_layout.addWidget(self.library_radio)
radio_layout.addWidget(self.path_radio)
self.output_path_entry = QLineEdit()
self.output_path_entry.setText(self.config.get('output_path'))
radio_layout.addWidget(self.output_path_entry)
self.output_path_button = QPushButton(_('Choose ...'))
self.output_path_button.clicked.connect(self.choose_output_path)
radio_layout.addWidget(self.output_path_button)
radio_group.setLayout(radio_layout)
layout.addWidget(radio_group)
if self.config.get('to_library'):
self.library_radio.setChecked(True)
else:
self.path_radio.setChecked(True)
self.choose_output_type(self.library_radio.isChecked())
self.library_radio.toggled.connect(self.choose_output_type)
# Translate engine setting
engine_group = QGroupBox(_('Translate Engine'))
engine_layout = QVBoxLayout()
self.translate_engine = QComboBox()
for engine in sorted(TranslatorBuilder.engines):
self.translate_engine.addItem(engine)
engine = self.config.get('translate_engine')
if engine is not None:
self.translate_engine.setCurrentText(engine)
self.translate_engine.currentTextChanged.connect(
self.choose_translate_engine)
engine_layout.addWidget(self.translate_engine)
self.api_key = QLineEdit()
self.api_key.setPlaceholderText(_('API Key'))
self.choose_translate_engine(self.translate_engine.currentText())
engine_layout.addWidget(self.api_key)
engine_group.setLayout(engine_layout)
layout.addWidget(engine_group)
# Network Proxy
proxy_group = QGroupBox(_('Network Proxy'))
proxy_layout = QHBoxLayout()
self.proxy_enabled = QCheckBox(_('Enable'))
self.proxy_enabled.setChecked(self.config.get('proxy_enabled'))
proxy_layout.addWidget(self.proxy_enabled)
self.proxy_host = QLineEdit()
regex = r'^[a-zA-Z\d]([a-zA-Z\d]+(\.|-*)){2,}[a-zA-Z\d]\.[a-zA-Z\d]+$'
re = QRegularExpression(regex)
self.host_validator = QRegularExpressionValidator(re)
self.proxy_host.setPlaceholderText(_('Host'))
self.proxy_host.setValidator(self.host_validator)
proxy_layout.addWidget(self.proxy_host, 4)
self.proxy_port = QLineEdit()
self.proxy_port.setPlaceholderText(_('Port'))
port_validator = QIntValidator()
port_validator.setRange(0, 65536)
self.proxy_port.setValidator(port_validator)
proxy_layout.addWidget(self.proxy_port, 1)
self.proxy_port.textChanged.connect(
lambda num: self.proxy_port.setText(
num if not num or int(num) < port_validator.top()
else str(port_validator.top())))
proxy_test = QPushButton(_('Test'))
proxy_test.clicked.connect(self.test_proxy_connection)
proxy_layout.addWidget(proxy_test)
proxy_setting = self.config.get('proxy_setting')
if len(proxy_setting) == 2:
self.proxy_host.setText(proxy_setting[0])
self.proxy_port.setText(str(proxy_setting[1]))
proxy_group.setLayout(proxy_layout)
layout.addWidget(proxy_group)
# Miscellaneous setting
misc_widget = QWidget()
misc_layout = QHBoxLayout()
misc_layout.setContentsMargins(0, 0, 0, 0)
# Cache
cache_group = QGroupBox(_('Cache'))
self.cache_button = QPushButton(_('Clear'))
self.cache_count = QLabel()
self.recount_translation_cache()
self.cache_enabled = QCheckBox(_('Enable'))
cache_layout = QVBoxLayout()
cache_layout.addWidget(self.cache_enabled)
cache_layout.addWidget(self.get_divider())
cache_layout.addWidget(self.cache_count)
cache_layout.addWidget(self.cache_button)
cache_layout.addStretch(1)
cache_group.setLayout(cache_layout)
misc_layout.addWidget(cache_group, 1)
self.cache_enabled.setChecked(self.config.get('cache_enabled'))
self.cache_button.clicked.connect(self.clear_translation_cache)
# Request
request_group = QGroupBox(_('Request'))
request_validator = QIntValidator()
request_validator.setBottom(0)
self.attempt_limit = QLineEdit()
self.attempt_limit.setValidator(request_validator)
self.attempt_limit.setText(str(self.config.get('request_attempt')))
self.interval_max = QLineEdit()
self.interval_max.setValidator(request_validator)
self.interval_max.setText(str(self.config.get('request_interval')))
request_layout = QVBoxLayout()
request_layout.addWidget(QLabel(_('Attempt times (Default 3):')))
request_layout.addWidget(self.attempt_limit)
request_layout.addWidget(QLabel(_('Max interval (Default 5s):')))
request_layout.addWidget(self.interval_max)
request_layout.addStretch(1)
request_group.setLayout(request_layout)
misc_layout.addWidget(request_group, 1)
# Log
log_group = QGroupBox(_('Log'))
self.log_translation = QCheckBox(_('Show translation'))
log_layout = QVBoxLayout()
log_layout.addWidget(self.log_translation)
log_layout.addStretch(1)
log_group.setLayout(log_layout)
misc_layout.addWidget(log_group, 1)
self.log_translation.setChecked(self.config.get('log_translation'))
misc_widget.setLayout(misc_layout)
layout.addWidget(misc_widget, 0)
layout.addStretch(1)
save_button = QPushButton(_('Save'))
save_button.setObjectName('save_button')
save_button.clicked.connect(self.save_config)
layout.addWidget(save_button)
return widget
def choose_output_type(self, checked):
self.output_path_button.setDisabled(checked)
self.output_path_entry.setDisabled(checked)
def clear_translation_cache(self):
if len(self.gui.bookfere_translate_ebook_jobs) > 0:
return self.pop_alert(
_('Can not clear cache while job(s) running.'), 'warning')
TranslationCache.clean()
self.recount_translation_cache()
def recount_translation_cache(self):
return self.cache_count.setText(
_('Total: {}').format(TranslationCache.count()))
def is_valid_proxy_host(self, host):
state = self.host_validator.validate(host, 0)[0]
if isinstance(state, int):
return state == 2
return state.value == 2
def test_proxy_connection(self):
host = self.proxy_host.text()
port = self.proxy_port.text()
if not host or not self.is_valid_proxy_host(host) or not port:
return self.pop_alert(
_('Proxy host or port is incorrect.'), level='warning')
if is_proxy_availiable(host, port):
return self.pop_alert(_('The proxy is available.'))
return self.pop_alert(_('The proxy is not available.'), 'error')
def choose_translate_engine(self, engine):
self.api_key.setVisible(engine != 'Google')
engine_info = self.config.get('api_key')
current_engine = self.translate_engine.currentText()
self.api_key.clear()
if current_engine in engine_info:
self.api_key.setText(engine_info[current_engine])
def choose_output_path(self):
path = QFileDialog.getExistingDirectory()
self.output_path_entry.setText(path)
def save_config(self):
to_library = self.library_radio.isChecked()
self.config.update(to_library=to_library)
output_path = self.output_path_entry.text()
if not to_library and not os.path.exists(output_path):
return self.pop_alert(
_('The specified path does not exist.'), 'warning')
self.config.update(output_path=output_path.strip())
current_engine = self.translate_engine.currentText()
self.config.update(translate_engine=current_engine)
engine_info = self.config.get('api_key')
api_key = self.api_key.text()
if self.api_key.isVisible() and not api_key:
return self.pop_alert(
_('An API key is required.'), 'warning')
engine_info.update({current_engine: api_key or None})
proxy_enabled = self.proxy_enabled.isChecked()
self.config.update(proxy_enabled=proxy_enabled)
proxy_setting = []
host = self.proxy_host.text()
port = self.proxy_port.text()
if proxy_enabled and (
not host or not self.is_valid_proxy_host(host) or not port):
return self.pop_alert(
_('Proxy host or port is incorrect.'), level='warning')
self.config.update(proxy_setting=[])
if host:
proxy_setting.append(host)
if port:
proxy_setting.append(int(port))
self.config.update(proxy_setting=proxy_setting)
request_fields = (
('request_attempt', self.attempt_limit),
('request_interval', self.interval_max),
)
for name, value in request_fields:
if value.text():
self.config.update({name: int(value.text())})
else:
value.setText('0')
self.config.update({name: 0})
self.config.update(cache_enabled=self.cache_enabled.isChecked())
self.config.update(log_translation=self.log_translation.isChecked())
save_config(self.config.items())
self.pop_alert(_('The setting was saved.'))
def layout_about(self):
widget = QWidget()
layout = QVBoxLayout(widget)
brand = QWidget()
brand_layout = QVBoxLayout(brand)
brand_layout.addStretch(1)
logo = QLabel()
logo.setPixmap(self.icon.pixmap(80, 80))
logo.setAlignment(Qt.AlignCenter)
brand_layout.addWidget(logo)
name = QLabel(EbookTranslator.title.upper())
name.setStyleSheet('font-size:20px;font-weight:300;')
name.setAlignment(Qt.AlignCenter)
name.setTextFormat(Qt.RichText)
brand_layout.addWidget(name)
version = QLabel(EbookTranslator.get_version())
version.setStyleSheet('font-size:14px;')
version.setAlignment(Qt.AlignCenter)
version.setTextFormat(Qt.RichText)
brand_layout.addWidget(version)
brand_layout.addStretch(1)
layout.addWidget(brand, 1)
description = QTextBrowser()
document = QTextDocument()
document.setDocumentMargin(30)
document.setDefaultStyleSheet(
'h1,h2{font-size:large;}'
'p,ul{margin:20px 0;}'
'ul{-qt-list-indent:0;margin-left:10px;}'
'li{margin:6px 0;}')
html = markdown(self.get_readme())
document.setHtml(html)
description.setDocument(document)
description.setOpenExternalLinks(True)
layout.addWidget(description, 1)
return widget
def get_readme(self):
default = 'README.md'
foreign = default.replace('.', '.%s.' % get_lang().replace('_', '-'))
resource = self.get_resource(foreign) or self.get_resource(default)
return resource.decode()
def get_resource(self, filename):
"""Replace the built-in get_resources function because it cannot
prevent reporting to STDERR in the old version..
"""
with zipfile.ZipFile(self.plugin.plugin_path) as zf:
try:
return zf.read(filename)
except Exception:
return None
def pop_alert(self, text, level='info'):
icons = {
'info': QMessageBox.Information,
'warning': QMessageBox.Warning,
'ask': QMessageBox.Question,
'error': QMessageBox.Critical,
}
alert = QMessageBox(self)
alert.setIcon(icons[level])
alert.setText(text)
alert.exec_()
def get_divider(self):
divider = QFrame()
divider.setFrameShape(QFrame.HLine)
divider.setFrameShadow(QFrame.Sunken)
return divider