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DeDRM_tools/Obok_plugin/common_utils.py

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:ai
__license__ = 'GPL v3'
__copyright__ = '2012, David Forrester <davidfor@internode.on.net>'
__docformat__ = 'restructuredtext en'
import os, time, re, sys
from datetime import datetime
from PyQt5.Qt import (Qt, QIcon, QPixmap, QLabel, QDialog, QHBoxLayout, QProgressBar,
QTableWidgetItem, QFont, QLineEdit, QComboBox,
QVBoxLayout, QDialogButtonBox, QStyledItemDelegate, QDateTime,
QRegExpValidator, QRegExp, QDate, QDateEdit)
from calibre.constants import iswindows, filesystem_encoding, DEBUG
from calibre.gui2 import gprefs, error_dialog, UNDEFINED_QDATETIME, Application
from calibre.gui2.actions import menu_action_unique_name
from calibre.gui2.keyboard import ShortcutConfig
from calibre.utils.config import config_dir, tweaks
from calibre.utils.date import now, format_date, qt_to_dt, UNDEFINED_DATE, as_local_time
from calibre import prints
# Global definition of our plugin name. Used for common functions that require this.
plugin_name = None
# Global definition of our plugin resources. Used to share between the xxxAction and xxxBase
# classes if you need any zip images to be displayed on the configuration dialog.
plugin_icon_resources = {}
BASE_TIME = None
def debug_print(*args):
global BASE_TIME
if BASE_TIME is None:
BASE_TIME = time.time()
if DEBUG:
prints('DEBUG: %6.1f'%(time.time()-BASE_TIME), *args)
try:
debug_print("obok::common_utils.py - loading translations")
load_translations()
except NameError:
debug_print("obok::common_utils.py - exception when loading translations")
pass # load_translations() added in calibre 1.9
def set_plugin_icon_resources(name, resources):
'''
Set our global store of plugin name and icon resources for sharing between
the InterfaceAction class which reads them and the ConfigWidget
if needed for use on the customization dialog for this plugin.
'''
global plugin_icon_resources, plugin_name
plugin_name = name
plugin_icon_resources = resources
def get_icon(icon_name):
'''
Retrieve a QIcon for the named image from the zip file if it exists,
or if not then from Calibre's image cache.
'''
if icon_name:
pixmap = get_pixmap(icon_name)
if pixmap is None:
# Look in Calibre's cache for the icon
return QIcon(I(icon_name))
else:
return QIcon(pixmap)
return QIcon()
def get_pixmap(icon_name):
'''
Retrieve a QPixmap for the named image
Any icons belonging to the plugin must be prefixed with 'images/'
'''
global plugin_icon_resources, plugin_name
if not icon_name.startswith('images/'):
# We know this is definitely not an icon belonging to this plugin
pixmap = QPixmap()
pixmap.load(I(icon_name))
return pixmap
# Check to see whether the icon exists as a Calibre resource
# This will enable skinning if the user stores icons within a folder like:
# ...\AppData\Roaming\calibre\resources\images\Plugin Name\
if plugin_name:
local_images_dir = get_local_images_dir(plugin_name)
local_image_path = os.path.join(local_images_dir, icon_name.replace('images/', ''))
if os.path.exists(local_image_path):
pixmap = QPixmap()
pixmap.load(local_image_path)
return pixmap
# As we did not find an icon elsewhere, look within our zip resources
if icon_name in plugin_icon_resources:
pixmap = QPixmap()
pixmap.loadFromData(plugin_icon_resources[icon_name])
return pixmap
return None
def get_local_images_dir(subfolder=None):
'''
Returns a path to the user's local resources/images folder
If a subfolder name parameter is specified, appends this to the path
'''
images_dir = os.path.join(config_dir, 'resources/images')
if subfolder:
images_dir = os.path.join(images_dir, subfolder)
if iswindows:
images_dir = os.path.normpath(images_dir)
return images_dir
def create_menu_item(ia, parent_menu, menu_text, image=None, tooltip=None,
shortcut=(), triggered=None, is_checked=None):
'''
Create a menu action with the specified criteria and action
Note that if no shortcut is specified, will not appear in Preferences->Keyboard
This method should only be used for actions which either have no shortcuts,
or register their menus only once. Use create_menu_action_unique for all else.
'''
if shortcut is not None:
if len(shortcut) == 0:
shortcut = ()
else:
shortcut = _(shortcut)
ac = ia.create_action(spec=(menu_text, None, tooltip, shortcut),
attr=menu_text)
if image:
ac.setIcon(get_icon(image))
if triggered is not None:
ac.triggered.connect(triggered)
if is_checked is not None:
ac.setCheckable(True)
if is_checked:
ac.setChecked(True)
parent_menu.addAction(ac)
return ac
def create_menu_action_unique(ia, parent_menu, menu_text, image=None, tooltip=None,
shortcut=None, triggered=None, is_checked=None, shortcut_name=None,
unique_name=None):
'''
Create a menu action with the specified criteria and action, using the new
InterfaceAction.create_menu_action() function which ensures that regardless of
whether a shortcut is specified it will appear in Preferences->Keyboard
'''
orig_shortcut = shortcut
kb = ia.gui.keyboard
if unique_name is None:
unique_name = menu_text
if not shortcut == False:
full_unique_name = menu_action_unique_name(ia, unique_name)
if full_unique_name in kb.shortcuts:
shortcut = False
else:
if shortcut is not None and not shortcut == False:
if len(shortcut) == 0:
shortcut = None
else:
shortcut = _(shortcut)
if shortcut_name is None:
shortcut_name = menu_text.replace('&','')
ac = ia.create_menu_action(parent_menu, unique_name, menu_text, icon=None, shortcut=shortcut,
description=tooltip, triggered=triggered, shortcut_name=shortcut_name)
if shortcut == False and not orig_shortcut == False:
if ac.calibre_shortcut_unique_name in ia.gui.keyboard.shortcuts:
kb.replace_action(ac.calibre_shortcut_unique_name, ac)
if image:
ac.setIcon(get_icon(image))
if is_checked is not None:
ac.setCheckable(True)
if is_checked:
ac.setChecked(True)
return ac
def get_library_uuid(db):
try:
library_uuid = db.library_id
except:
library_uuid = ''
return library_uuid
class ImageLabel(QLabel):
def __init__(self, parent, icon_name, size=16):
QLabel.__init__(self, parent)
pixmap = get_pixmap(icon_name)
self.setPixmap(pixmap)
self.setMaximumSize(size, size)
self.setScaledContents(True)
class ImageTitleLayout(QHBoxLayout):
'''
A reusable layout widget displaying an image followed by a title
'''
def __init__(self, parent, icon_name, title):
QHBoxLayout.__init__(self)
self.title_image_label = QLabel(parent)
self.update_title_icon(icon_name)
self.addWidget(self.title_image_label)
title_font = QFont()
title_font.setPointSize(16)
shelf_label = QLabel(title, parent)
shelf_label.setFont(title_font)
self.addWidget(shelf_label)
self.insertStretch(-1)
# Add hyperlink to a help file at the right. We will replace the correct name when it is clicked.
help_label = QLabel(('<a href="http://www.foo.com/">{0}</a>').format(_("Help")), parent)
help_label.setTextInteractionFlags(Qt.LinksAccessibleByMouse | Qt.LinksAccessibleByKeyboard)
help_label.setAlignment(Qt.AlignRight)
help_label.linkActivated.connect(parent.help_link_activated)
self.addWidget(help_label)
def update_title_icon(self, icon_name):
pixmap = get_pixmap(icon_name)
if pixmap is None:
error_dialog(self.parent(), _("Restart required"),
_("Title image not found - you must restart Calibre before using this plugin!"), show=True)
else:
self.title_image_label.setPixmap(pixmap)
self.title_image_label.setMaximumSize(32, 32)
self.title_image_label.setScaledContents(True)
class SizePersistedDialog(QDialog):
'''
This dialog is a base class for any dialogs that want their size/position
restored when they are next opened.
'''
def __init__(self, parent, unique_pref_name):
QDialog.__init__(self, parent)
self.unique_pref_name = unique_pref_name
self.geom = gprefs.get(unique_pref_name, None)
self.finished.connect(self.dialog_closing)
self.help_anchor = ''
def resize_dialog(self):
if self.geom is None:
self.resize(self.sizeHint())
else:
self.restoreGeometry(self.geom)
def dialog_closing(self, result):
geom = bytearray(self.saveGeometry())
gprefs[self.unique_pref_name] = geom
def help_link_activated(self, url):
self.plugin_action.show_help(anchor=self.help_anchor)
class ReadOnlyTableWidgetItem(QTableWidgetItem):
def __init__(self, text):
if text is None:
text = ''
QTableWidgetItem.__init__(self, text, QTableWidgetItem.ItemType.UserType)
self.setFlags(Qt.ItemIsSelectable|Qt.ItemIsEnabled)
class RatingTableWidgetItem(QTableWidgetItem):
def __init__(self, rating, is_read_only=False):
QTableWidgetItem.__init__(self, '', QTableWidgetItem.ItemType.UserType)
self.setData(Qt.DisplayRole, rating)
if is_read_only:
self.setFlags(Qt.ItemIsSelectable|Qt.ItemIsEnabled)
class DateTableWidgetItem(QTableWidgetItem):
def __init__(self, date_read, is_read_only=False, default_to_today=False, fmt=None):
# debug_print("DateTableWidgetItem:__init__ - date_read=", date_read)
if date_read is None or date_read == UNDEFINED_DATE and default_to_today:
date_read = now()
if is_read_only:
QTableWidgetItem.__init__(self, format_date(date_read, fmt), QTableWidgetItem.ItemType.UserType)
self.setFlags(Qt.ItemIsSelectable|Qt.ItemIsEnabled)
self.setData(Qt.DisplayRole, QDateTime(date_read))
else:
QTableWidgetItem.__init__(self, '', QTableWidgetItem.ItemType.UserType)
self.setData(Qt.DisplayRole, QDateTime(date_read))
from calibre.gui2.library.delegates import DateDelegate as _DateDelegate
class DateDelegate(_DateDelegate):
'''
Delegate for dates. Because this delegate stores the
format as an instance variable, a new instance must be created for each
column. This differs from all the other delegates.
'''
def __init__(self, parent, fmt='dd MMM yyyy', default_to_today=True):
_DateDelegate.__init__(self, parent)
self.format = fmt
self.default_to_today = default_to_today
# def displayText(self, val, locale):
# d = val.toDateTime()
# if d <= UNDEFINED_QDATETIME:
# return ''
# return format_date(qt_to_dt(d, as_utc=False), self.format)
def createEditor(self, parent, option, index):
qde = QStyledItemDelegate.createEditor(self, parent, option, index)
qde.setDisplayFormat(self.format)
qde.setMinimumDateTime(UNDEFINED_QDATETIME)
qde.setSpecialValueText(_('Undefined'))
qde.setCalendarPopup(True)
return qde
def setEditorData(self, editor, index):
val = index.model().data(index, Qt.DisplayRole).toDateTime()
if val is None or val == UNDEFINED_QDATETIME:
if self.default_to_today:
val = self.default_date
else:
val = UNDEFINED_QDATETIME
editor.setDateTime(val)
def setModelData(self, editor, model, index):
val = editor.dateTime()
if val <= UNDEFINED_QDATETIME:
model.setData(index, UNDEFINED_QDATETIME, Qt.EditRole)
else:
model.setData(index, QDateTime(val), Qt.EditRole)
class NoWheelComboBox(QComboBox):
def wheelEvent (self, event):
# Disable the mouse wheel on top of the combo box changing selection as plays havoc in a grid
event.ignore()
class CheckableTableWidgetItem(QTableWidgetItem):
def __init__(self, checked=False, is_tristate=False):
QTableWidgetItem.__init__(self, '')
self.setFlags(Qt.ItemFlags(Qt.ItemIsSelectable | Qt.ItemIsUserCheckable | Qt.ItemIsEnabled ))
if is_tristate:
self.setFlags(self.flags() | Qt.ItemIsTristate)
if checked:
self.setCheckState(Qt.Checked)
else:
if is_tristate and checked is None:
self.setCheckState(Qt.PartiallyChecked)
else:
self.setCheckState(Qt.Unchecked)
def get_boolean_value(self):
'''
Return a boolean value indicating whether checkbox is checked
If this is a tristate checkbox, a partially checked value is returned as None
'''
if self.checkState() == Qt.PartiallyChecked:
return None
else:
return self.checkState() == Qt.Checked
class TextIconWidgetItem(QTableWidgetItem):
def __init__(self, text, icon):
QTableWidgetItem.__init__(self, text)
if icon:
self.setIcon(icon)
class ReadOnlyTextIconWidgetItem(ReadOnlyTableWidgetItem):
def __init__(self, text, icon):
ReadOnlyTableWidgetItem.__init__(self, text)
if icon:
self.setIcon(icon)
class ReadOnlyLineEdit(QLineEdit):
def __init__(self, text, parent):
if text is None:
text = ''
QLineEdit.__init__(self, text, parent)
self.setEnabled(False)
class NumericLineEdit(QLineEdit):
'''
Allows a numeric value up to two decimal places, or an integer
'''
def __init__(self, *args):
QLineEdit.__init__(self, *args)
self.setValidator(QRegExpValidator(QRegExp(r'(^\d*\.[\d]{1,2}$)|(^[1-9]\d*[\.]$)'), self))
class KeyValueComboBox(QComboBox):
def __init__(self, parent, values, selected_key):
QComboBox.__init__(self, parent)
self.values = values
self.populate_combo(selected_key)
def populate_combo(self, selected_key):
self.clear()
selected_idx = idx = -1
for key, value in self.values.iteritems():
idx = idx + 1
self.addItem(value)
if key == selected_key:
selected_idx = idx
self.setCurrentIndex(selected_idx)
def selected_key(self):
for key, value in self.values.iteritems():
if value == self.currentText().strip():
return key
class KeyComboBox(QComboBox):
def __init__(self, parent, values, selected_key):
QComboBox.__init__(self, parent)
self.values = values
self.populate_combo(selected_key)
def populate_combo(self, selected_key):
self.clear()
selected_idx = idx = -1
for key in sorted(self.values.keys()):
idx = idx + 1
self.addItem(key)
if key == selected_key:
selected_idx = idx
self.setCurrentIndex(selected_idx)
def selected_key(self):
for key, value in self.values.iteritems():
if key == self.currentText().strip():
return key
class CustomColumnComboBox(QComboBox):
def __init__(self, parent, custom_columns={}, selected_column='', initial_items=['']):
QComboBox.__init__(self, parent)
self.populate_combo(custom_columns, selected_column, initial_items)
def populate_combo(self, custom_columns, selected_column, initial_items=['']):
self.clear()
self.column_names = list(initial_items)
if len(initial_items) > 0:
self.addItems(initial_items)
selected_idx = 0
for idx, value in enumerate(initial_items):
if value == selected_column:
selected_idx = idx
for key in sorted(custom_columns.keys()):
self.column_names.append(key)
self.addItem('%s (%s)'%(key, custom_columns[key]['name']))
if key == selected_column:
selected_idx = len(self.column_names) - 1
self.setCurrentIndex(selected_idx)
def get_selected_column(self):
return self.column_names[self.currentIndex()]
class KeyboardConfigDialog(SizePersistedDialog):
'''
This dialog is used to allow editing of keyboard shortcuts.
'''
def __init__(self, gui, group_name):
SizePersistedDialog.__init__(self, gui, 'Keyboard shortcut dialog')
self.gui = gui
self.setWindowTitle('Keyboard shortcuts')
layout = QVBoxLayout(self)
self.setLayout(layout)
self.keyboard_widget = ShortcutConfig(self)
layout.addWidget(self.keyboard_widget)
self.group_name = group_name
button_box = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
button_box.accepted.connect(self.commit)
button_box.rejected.connect(self.reject)
layout.addWidget(button_box)
# Cause our dialog size to be restored from prefs or created on first usage
self.resize_dialog()
self.initialize()
def initialize(self):
self.keyboard_widget.initialize(self.gui.keyboard)
self.keyboard_widget.highlight_group(self.group_name)
def commit(self):
self.keyboard_widget.commit()
self.accept()
class ProgressBar(QDialog):
def __init__(self, parent=None, max_items=100, window_title='Progress Bar',
label='Label goes here', on_top=False):
if on_top:
QDialog.__init__(self, parent=parent, flags=Qt.WindowStaysOnTopHint)
else:
QDialog.__init__(self, parent=parent)
self.application = Application
self.setWindowTitle(window_title)
self.l = QVBoxLayout(self)
self.setLayout(self.l)
self.label = QLabel(label)
self.label.setAlignment(Qt.AlignHCenter)
self.l.addWidget(self.label)
self.progressBar = QProgressBar(self)
self.progressBar.setRange(0, max_items)
self.progressBar.setValue(0)
self.l.addWidget(self.progressBar)
def increment(self):
self.progressBar.setValue(self.progressBar.value() + 1)
self.refresh()
def refresh(self):
self.application.processEvents()
def set_label(self, value):
self.label.setText(value)
self.refresh()
def set_maximum(self, value):
self.progressBar.setMaximum(value)
self.refresh()
def set_value(self, value):
self.progressBar.setValue(value)
self.refresh()
def convert_kobo_date(kobo_date):
from calibre.utils.date import utc_tz
try:
converted_date = datetime.strptime(kobo_date, "%Y-%m-%dT%H:%M:%S.%f")
converted_date = datetime.strptime(kobo_date[0:19], "%Y-%m-%dT%H:%M:%S")
converted_date = converted_date.replace(tzinfo=utc_tz)
# debug_print("convert_kobo_date - '%Y-%m-%dT%H:%M:%S.%f' - kobo_date={0}'".format(kobo_date))
except:
try:
converted_date = datetime.strptime(kobo_date, "%Y-%m-%dT%H:%M:%S%+00:00")
# debug_print("convert_kobo_date - '%Y-%m-%dT%H:%M:%S+00:00' - kobo_date=%s' - kobo_date={0}'".format(kobo_date))
except:
try:
converted_date = datetime.strptime(kobo_date.split('+')[0], "%Y-%m-%dT%H:%M:%S")
converted_date = converted_date.replace(tzinfo=utc_tz)
# debug_print("convert_kobo_date - '%Y-%m-%dT%H:%M:%S' - kobo_date={0}'".format(kobo_date))
except:
try:
converted_date = datetime.strptime(kobo_date.split('+')[0], "%Y-%m-%d")
converted_date = converted_date.replace(tzinfo=utc_tz)
# debug_print("convert_kobo_date - '%Y-%m-%d' - kobo_date={0}'".format(kobo_date))
except:
try:
from calibre.utils.date import parse_date
converted_date = parse_date(kobo_date, assume_utc=True)
# debug_print("convert_kobo_date - parse_date - kobo_date=%s' - kobo_date={0}'".format(kobo_date))
except:
# try:
# converted_date = time.gmtime(os.path.getctime(self.path))
# debug_print("convert_kobo_date - time.gmtime(os.path.getctime(self.path)) - kobo_date={0}'".format(kobo_date))
# except:
converted_date = time.gmtime()
debug_print("convert_kobo_date - time.gmtime() - kobo_date={0}'".format(kobo_date))
return converted_date
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