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229 lines
7.3 KiB
Python
229 lines
7.3 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:ai
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__license__ = 'GPL v3'
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__docformat__ = 'restructuredtext en'
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import os, struct, time
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try:
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from StringIO import StringIO
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except ImportError:
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from io import StringIO
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from traceback import print_exc
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from PyQt5.Qt import (Qt, QDialog, QPixmap, QIcon, QLabel, QHBoxLayout, QFont, QTableWidgetItem)
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from calibre.utils.config import config_dir
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from calibre.constants import iswindows, DEBUG
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from calibre import prints
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from calibre.gui2 import (error_dialog, gprefs)
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from calibre.gui2.actions import menu_action_unique_name
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from calibre_plugins.obok_dedrm.__init__ import (PLUGIN_NAME,
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PLUGIN_SAFE_NAME, PLUGIN_VERSION, PLUGIN_DESCRIPTION)
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plugin_ID = None
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plugin_icon_resources = {}
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try:
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from calibre.gui2 import QVariant
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del QVariant
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except ImportError:
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is_qt4 = False
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convert_qvariant = lambda x: x
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else:
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is_qt4 = True
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def convert_qvariant(x):
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vt = x.type()
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if vt == x.String:
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return x.toString()
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if vt == x.List:
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return [convert_qvariant(i) for i in x.toList()]
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return x.toPyObject()
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BASE_TIME = None
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def debug_print(*args):
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global BASE_TIME
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if BASE_TIME is None:
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BASE_TIME = time.time()
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if DEBUG:
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prints('DEBUG: %6.1f'%(time.time()-BASE_TIME), *args)
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try:
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debug_print("obok::utilities.py - loading translations")
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load_translations()
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except NameError:
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debug_print("obok::utilities.py - exception when loading translations")
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pass # load_translations() added in calibre 1.9
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def format_plural(number, possessive=False):
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'''
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Cosmetic ditty to provide the proper string formatting variable to handle singular/plural situations
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:param: number: variable that represents the count/len of something
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'''
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if not possessive:
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return '' if number == 1 else 's'
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return '\'s' if number == 1 else 's\''
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def set_plugin_icon_resources(name, resources):
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'''
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Set our global store of plugin name and icon resources for sharing between
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the InterfaceAction class which reads them and the ConfigWidget
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if needed for use on the customization dialog for this plugin.
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'''
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global plugin_icon_resources, plugin_ID
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plugin_ID = name
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plugin_icon_resources = resources
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def get_icon(icon_name):
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'''
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Retrieve a QIcon for the named image from the zip file if it exists,
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or if not then from Calibre's image cache.
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'''
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if icon_name:
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pixmap = get_pixmap(icon_name)
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if pixmap is None:
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# Look in Calibre's cache for the icon
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return QIcon(I(icon_name))
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else:
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return QIcon(pixmap)
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return QIcon()
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def get_pixmap(icon_name):
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'''
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Retrieve a QPixmap for the named image
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Any icons belonging to the plugin must be prefixed with 'images/'
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'''
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if not icon_name.startswith('images/'):
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# We know this is definitely not an icon belonging to this plugin
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pixmap = QPixmap()
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pixmap.load(I(icon_name))
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return pixmap
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# Check to see whether the icon exists as a Calibre resource
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# This will enable skinning if the user stores icons within a folder like:
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# ...\AppData\Roaming\calibre\resources\images\Plugin Name\
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if plugin_ID:
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local_images_dir = get_local_images_dir(plugin_ID)
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local_image_path = os.path.join(local_images_dir, icon_name.replace('images/', ''))
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if os.path.exists(local_image_path):
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pixmap = QPixmap()
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pixmap.load(local_image_path)
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return pixmap
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# As we did not find an icon elsewhere, look within our zip resources
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if icon_name in plugin_icon_resources:
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pixmap = QPixmap()
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pixmap.loadFromData(plugin_icon_resources[icon_name])
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return pixmap
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return None
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def get_local_images_dir(subfolder=None):
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'''
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Returns a path to the user's local resources/images folder
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If a subfolder name parameter is specified, appends this to the path
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'''
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images_dir = os.path.join(config_dir, 'resources/images')
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if subfolder:
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images_dir = os.path.join(images_dir, subfolder)
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if iswindows:
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images_dir = os.path.normpath(images_dir)
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return images_dir
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def showErrorDlg(errmsg, parent, trcbk=False):
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'''
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Wrapper method for calibre's error_dialog
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'''
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if trcbk:
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error= ''
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f=StringIO()
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print_exc(file=f)
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error_mess = f.getvalue().splitlines()
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for line in error_mess:
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error = error + str(line) + '\n'
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errmsg = errmsg + '\n\n' + error
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return error_dialog(parent, _(PLUGIN_NAME + ' v' + PLUGIN_VERSION),
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_(errmsg), show=True)
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class SizePersistedDialog(QDialog):
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'''
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This dialog is a base class for any dialogs that want their size/position
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restored when they are next opened.
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'''
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def __init__(self, parent, unique_pref_name):
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QDialog.__init__(self, parent)
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self.unique_pref_name = unique_pref_name
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self.geom = gprefs.get(unique_pref_name, None)
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self.finished.connect(self.dialog_closing)
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def resize_dialog(self):
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if self.geom is None:
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self.resize(self.sizeHint())
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else:
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self.restoreGeometry(self.geom)
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def dialog_closing(self, result):
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geom = bytearray(self.saveGeometry())
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gprefs[self.unique_pref_name] = geom
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self.persist_custom_prefs()
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def persist_custom_prefs(self):
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'''
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Invoked when the dialog is closing. Override this function to call
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save_custom_pref() if you have a setting you want persisted that you can
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retrieve in your __init__() using load_custom_pref() when next opened
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'''
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pass
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def load_custom_pref(self, name, default=None):
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return gprefs.get(self.unique_pref_name+':'+name, default)
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def save_custom_pref(self, name, value):
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gprefs[self.unique_pref_name+':'+name] = value
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class ImageTitleLayout(QHBoxLayout):
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'''
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A reusable layout widget displaying an image followed by a title
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'''
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def __init__(self, parent, icon_name, title):
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'''
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:param parent: Parent gui
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:param icon_name: Path to plugin image resource
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:param title: String to be displayed beside the image
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'''
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QHBoxLayout.__init__(self)
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self.title_image_label = QLabel(parent)
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self.update_title_icon(icon_name)
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self.addWidget(self.title_image_label)
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title_font = QFont()
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title_font.setPointSize(16)
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shelf_label = QLabel(title, parent)
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shelf_label.setFont(title_font)
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self.addWidget(shelf_label)
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self.insertStretch(-1)
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def update_title_icon(self, icon_name):
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pixmap = get_pixmap(icon_name)
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if pixmap is None:
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error_dialog(self.parent(), _('Restart required'),
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_('Title image not found - you must restart Calibre before using this plugin!'), show=True)
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else:
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self.title_image_label.setPixmap(pixmap)
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self.title_image_label.setMaximumSize(32, 32)
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self.title_image_label.setScaledContents(True)
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class ReadOnlyTableWidgetItem(QTableWidgetItem):
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def __init__(self, text):
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if text is None:
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text = ''
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QTableWidgetItem.__init__(self, text, QTableWidgetItem.UserType)
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self.setFlags(Qt.ItemIsSelectable|Qt.ItemIsEnabled)
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