681 lines
26 KiB
Python
681 lines
26 KiB
Python
# This file is a part of Lector, a Qt based ebook reader
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# Copyright (C) 2017-2019 BasioMeusPuga
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# TODO
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# Reading modes
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# Double page, Continuous etc
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import os
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import logging
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from PyQt5 import QtWidgets, QtGui, QtCore
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from lector.sorter import resize_image
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from lector.dockwidgets import PliantDockWidget
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from lector.contentwidgets import PliantQGraphicsView, PliantQTextBrowser
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logger = logging.getLogger(__name__)
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class Tab(QtWidgets.QWidget):
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def __init__(self, metadata, main_window, parent=None):
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super(Tab, self).__init__(parent)
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self._translate = QtCore.QCoreApplication.translate
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self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
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self.main_window = main_window
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self.metadata = metadata # Save progress data into this dictionary
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self.are_we_doing_images_only = self.metadata['images_only']
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self.is_fullscreen = False
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self.is_library = False
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self.masterLayout = QtWidgets.QHBoxLayout(self)
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self.masterLayout.setContentsMargins(0, 0, 0, 0)
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self.metadata['last_accessed'] = QtCore.QDateTime().currentDateTime()
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# Create relevant containers
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if not self.metadata['annotations']:
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self.metadata['annotations'] = {}
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if not self.metadata['bookmarks']:
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self.metadata['bookmarks'] = {}
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# Generate toc Model
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self.tocModel = QtGui.QStandardItemModel()
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self.tocModel.setHorizontalHeaderLabels(('Table of Contents',))
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self.generate_toc_model()
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# Get the current position of the book
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if self.metadata['position']:
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# A book might have been marked read without being opened
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if self.metadata['position']['is_read']:
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self.generate_position(True)
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current_chapter = self.metadata['position']['current_chapter']
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else:
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self.generate_position()
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current_chapter = 1
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# The content display widget is, by default a QTextBrowser.
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# In case the incoming data is only images
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# such as in the case of comic book files,
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# we want a QGraphicsView widget doing all the heavy lifting
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# instead of a QTextBrowser
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if self.are_we_doing_images_only:
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self.contentView = PliantQGraphicsView(
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self.metadata['path'], self.main_window, self)
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else:
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self.contentView = PliantQTextBrowser(
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self.main_window, self)
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self.contentView.setReadOnly(True)
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# TODO
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# Change this when HTML navigation works
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self.contentView.setOpenLinks(False)
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# TODO
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# Rename the .css files to something else here and keep
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# a record of them .Currently, I'm just removing them
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# for the sake of simplicity
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relative_path_root = os.path.join(
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self.main_window.temp_dir.path(), self.metadata['hash'])
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relative_paths = []
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for i in os.walk(relative_path_root):
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for j in i[2]:
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file_extension = os.path.splitext(j)[1]
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if file_extension == '.css':
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file_path = os.path.join(i[0], j)
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os.remove(file_path)
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relative_paths.append(os.path.join(relative_path_root, i[0]))
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self.contentView.setSearchPaths(relative_paths)
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self.hiddenButton = QtWidgets.QToolButton(self)
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self.hiddenButton.setVisible(False)
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self.hiddenButton.clicked.connect(self.set_cursor_position)
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# All content must be set through this function
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self.set_content(current_chapter, True)
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if not self.are_we_doing_images_only:
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# Setting this later breaks cursor positioning for search results
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self.hiddenButton.animateClick(50)
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# Load annotations for current content
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self.contentView.common_functions.load_annotations(current_chapter)
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# The following are common to both the text browser and
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# the graphics view
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self.contentView.setFrameShape(QtWidgets.QFrame.NoFrame)
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self.contentView.setObjectName('contentView')
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self.contentView.verticalScrollBar().setSingleStep(
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self.main_window.settings['scroll_speed'])
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if self.main_window.settings['hide_scrollbars']:
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self.contentView.setHorizontalScrollBarPolicy(
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QtCore.Qt.ScrollBarAlwaysOff)
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self.contentView.setVerticalScrollBarPolicy(
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QtCore.Qt.ScrollBarAlwaysOff)
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else:
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self.contentView.setHorizontalScrollBarPolicy(
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QtCore.Qt.ScrollBarAsNeeded)
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self.contentView.setVerticalScrollBarPolicy(
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QtCore.Qt.ScrollBarAsNeeded)
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# Create a common dock for bookmarks, annotations, and search
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self.sideDock = PliantDockWidget(
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self.main_window, False, self.contentView, self)
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self.sideDock.populate()
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# Create the annotation notes dock
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self.annotationNoteDock = PliantDockWidget(
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self.main_window, True, self.contentView, self)
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self.annotationNoteDock.setWindowTitle(self._translate('Tab', 'Note'))
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self.annotationNoteDock.setFeatures(QtWidgets.QDockWidget.DockWidgetClosable)
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self.annotationNoteDock.hide()
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self.annotationNoteEdit = QtWidgets.QTextEdit(self.annotationNoteDock)
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self.annotationNoteEdit.setMaximumSize(QtCore.QSize(250, 250))
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self.annotationNoteEdit.setFocusPolicy(QtCore.Qt.StrongFocus)
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self.annotationNoteDock.setWidget(self.annotationNoteEdit)
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self.generate_keyboard_shortcuts()
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self.masterLayout.addWidget(self.contentView)
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self.masterLayout.addWidget(self.sideDock)
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self.masterLayout.addWidget(self.annotationNoteDock)
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# The following has to be after the docks are added to the layout
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self.sideDock.setFloating(True)
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self.sideDock.setWindowOpacity(.95)
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self.annotationNoteDock.setFloating(True)
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self.annotationNoteDock.setWindowOpacity(.95)
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self.sideDock.hide()
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# Create tab in the central tab widget
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title = self.metadata['title']
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if self.main_window.settings['attenuate_titles'] and len(title) > 30:
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title = title[:30] + '...'
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self.main_window.tabWidget.addTab(self, title)
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this_tab_index = self.main_window.tabWidget.indexOf(self)
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cover_icon = QtGui.QPixmap()
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cover_icon.loadFromData(self.metadata['cover'])
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self.main_window.tabWidget.setTabIcon(
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this_tab_index, QtGui.QIcon(cover_icon))
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# Hide mouse cursor timer
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self.mouse_hide_timer = QtCore.QTimer()
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self.mouse_hide_timer.setSingleShot(True)
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self.mouse_hide_timer.timeout.connect(self.hide_mouse)
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# Hide the tab bar in case distraction free mode is active
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if not self.main_window.settings['show_bars']:
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self.main_window.tabWidget.tabBar().setVisible(False)
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self.contentView.setFocus()
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def toggle_side_dock(self, tab_required, override_hide=False):
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if (self.sideDock.isVisible()
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and self.sideDock.sideDockTabWidget.currentIndex() == tab_required
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and not override_hide):
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self.sideDock.hide()
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elif not self.sideDock.isVisible():
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self.sideDock.show()
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if tab_required == 2:
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self.sideDock.activateWindow()
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self.sideDock.search.searchLineEdit.setFocus()
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self.sideDock.search.searchLineEdit.selectAll()
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self.sideDock.sideDockTabWidget.setCurrentIndex(tab_required)
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def update_last_accessed_time(self):
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self.metadata['last_accessed'] = QtCore.QDateTime().currentDateTime()
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start_index = self.main_window.lib_ref.libraryModel.index(0, 0)
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matching_item = self.main_window.lib_ref.libraryModel.match(
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start_index,
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QtCore.Qt.UserRole + 6,
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self.metadata['hash'],
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1, QtCore.Qt.MatchExactly)
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try:
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self.main_window.lib_ref.libraryModel.setData(
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matching_item[0],
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self.metadata['last_accessed'], QtCore.Qt.UserRole + 12)
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except IndexError: # The file has been deleted
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pass
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def set_cursor_position(self, cursor_position=None, select_chars=0):
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try:
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required_position = self.metadata['position']['cursor_position']
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except KeyError:
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logging.error('Database: Cursor position error. Recommend retry.')
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return
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if cursor_position:
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required_position = cursor_position
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# This is needed so that the line we want is
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# always at the top of the window
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self.contentView.verticalScrollBar().setValue(
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self.contentView.verticalScrollBar().maximum())
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# textCursor() RETURNS a copy of the textcursor
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cursor = self.contentView.textCursor()
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cursor.setPosition(
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required_position - select_chars,
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QtGui.QTextCursor.MoveAnchor)
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if select_chars > 0: # Select search results
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cursor.movePosition(
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QtGui.QTextCursor.NextCharacter,
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QtGui.QTextCursor.KeepAnchor,
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select_chars)
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self.contentView.setTextCursor(cursor)
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self.contentView.ensureCursorVisible()
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# Finally, to make sure the cover image isn't
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# scrolled halfway through on first open,
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if self.main_window.bookToolBar.tocBox.currentIndex() == 0:
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self.contentView.verticalScrollBar().setValue(0)
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def generate_position(self, is_read=False):
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total_chapters = len(self.metadata['content'])
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current_chapter = 1
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if is_read:
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current_chapter = total_chapters
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# Generate block count @ time of first read
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# Blocks are indexed from 0 up
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blocks_per_chapter = []
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total_blocks = 0
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if not self.are_we_doing_images_only:
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for i in self.metadata['content']:
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chapter_html = i[1]
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textDocument = QtGui.QTextDocument(None)
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textDocument.setHtml(chapter_html)
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block_count = textDocument.blockCount()
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blocks_per_chapter.append(block_count)
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total_blocks += block_count
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self.metadata['position'] = {
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'current_chapter': current_chapter,
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'total_chapters': total_chapters,
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'blocks_per_chapter': blocks_per_chapter,
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'total_blocks': total_blocks,
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'is_read': is_read,
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'current_block': 0,
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'cursor_position': 0}
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def generate_keyboard_shortcuts(self):
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ksNextChapter = QtWidgets.QShortcut(
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QtGui.QKeySequence('Right'), self.contentView)
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ksNextChapter.setObjectName('nextChapter')
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ksNextChapter.activated.connect(self.sneaky_change)
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ksPrevChapter = QtWidgets.QShortcut(
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QtGui.QKeySequence('Left'), self.contentView)
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ksPrevChapter.setObjectName('prevChapter')
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ksPrevChapter.activated.connect(self.sneaky_change)
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ksGoFullscreen = QtWidgets.QShortcut(
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QtGui.QKeySequence('F'), self.contentView)
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ksGoFullscreen.activated.connect(self.go_fullscreen)
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ksExitFullscreen = QtWidgets.QShortcut(
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QtGui.QKeySequence('Escape'), self.contentView)
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ksExitFullscreen.setContext(QtCore.Qt.ApplicationShortcut)
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ksExitFullscreen.activated.connect(self.exit_fullscreen)
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ksToggleBookmarks = QtWidgets.QShortcut(
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QtGui.QKeySequence('Ctrl+B'), self.contentView)
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ksToggleBookmarks.activated.connect(
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lambda: self.toggle_side_dock(0))
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# Shortcuts not required for comic view functionality
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if not self.are_we_doing_images_only:
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ksToggleAnnotations = QtWidgets.QShortcut(
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QtGui.QKeySequence('Ctrl+N'), self.contentView)
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ksToggleAnnotations.activated.connect(
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lambda: self.toggle_side_dock(1))
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ksToggleSearch = QtWidgets.QShortcut(
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QtGui.QKeySequence('Ctrl+F'), self.contentView)
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ksToggleSearch.activated.connect(
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lambda: self.toggle_side_dock(2))
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def generate_toc_model(self):
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# The toc list is:
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# 0: Level
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# 1: Title
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# 2: Chapter content / page number
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# pprint it out to get a better idea of structure
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toc = self.metadata['toc']
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parent_list = []
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for i in toc:
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item = QtGui.QStandardItem()
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item.setText(i[1])
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item.setData(i[2], QtCore.Qt.UserRole)
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item.setData(i[1], QtCore.Qt.UserRole + 1)
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current_level = i[0]
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if current_level == 1:
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self.tocModel.appendRow(item)
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parent_list.clear()
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parent_list.append(item)
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else:
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parent_list[current_level - 2].appendRow(item)
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try:
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next_level = toc[toc.index(i) + 1][0]
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if next_level > current_level:
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parent_list.append(item)
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if next_level < current_level:
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level_difference = current_level - next_level
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parent_list = parent_list[:-level_difference]
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except IndexError:
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pass
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# This is needed to be able to have the toc Combobox
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# jump to the correct position in the book when it is
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# first opened
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self.main_window.bookToolBar.tocBox.setModel(self.tocModel)
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self.main_window.bookToolBar.tocTreeView.expandAll()
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def go_fullscreen(self):
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# To allow toggles to function
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# properly after the fullscreening
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self.sideDock.hide()
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self.annotationNoteDock.hide()
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if self.contentView.windowState() == QtCore.Qt.WindowFullScreen:
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self.exit_fullscreen()
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return
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if not self.are_we_doing_images_only:
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self.contentView.record_position()
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self.contentView.setWindowFlags(QtCore.Qt.Window)
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self.contentView.setWindowState(QtCore.Qt.WindowFullScreen)
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self.contentView.show()
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self.main_window.hide()
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if not self.are_we_doing_images_only:
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self.hiddenButton.animateClick(50)
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self.mouse_hide_timer.start(2000)
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self.is_fullscreen = True
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def exit_fullscreen(self):
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# Intercept escape presses
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for i in (self.annotationNoteDock, self.sideDock):
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if i.isVisible():
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i.setVisible(False)
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return
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# Prevents cursor position change on escape presses
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if self.main_window.isVisible():
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return
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if not self.are_we_doing_images_only:
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self.contentView.record_position()
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self.main_window.show()
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self.contentView.setWindowFlags(QtCore.Qt.Widget)
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self.contentView.setWindowState(QtCore.Qt.WindowNoState)
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self.contentView.show()
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self.is_fullscreen = False
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if not self.are_we_doing_images_only:
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self.hiddenButton.animateClick(100)
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# Hide the view modification buttons in case they're visible
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self.main_window.bookToolBar.customize_view_off()
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# Exit distraction free mode too
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if not self.main_window.settings['show_bars']:
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self.main_window.toggle_distraction_free()
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self.mouse_hide_timer.start(2000)
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self.contentView.setFocus()
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def set_content(self, required_position, tocBox_readjust=False):
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# All content changes must come through here
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# This function will decide how to relate
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# entries in the toc to the actual content
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# Do not allow cycling below page 1
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# Required position goes to -1 in double page view
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if required_position <= 0:
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return
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# Set the required page to the corresponding index
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# For images this is simply a page number
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# For text based books, this is the entire text of the chapter
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try:
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required_content = self.metadata['content'][required_position - 1]
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except IndexError:
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return # Do not allow cycling beyond last page
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# Update the metadata dictionary to save position
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self.metadata['position']['current_chapter'] = required_position
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self.metadata['position']['is_read'] = False
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if self.are_we_doing_images_only:
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self.contentView.loadImage(required_content)
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else:
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self.contentView.clear()
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self.contentView.setHtml(required_content)
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# Set the contentview to look the way God intended
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self.main_window.profile_functions.format_contentView()
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self.contentView.common_functions.load_annotations(required_position)
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# Change the index of the tocBox. This is manual and each function
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# that calls set_position must specify if it needs this adjustment
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if tocBox_readjust:
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self.set_tocBox_index(required_position, None)
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def set_tocBox_index(self, current_position=None, tocBox=None):
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# Get current position from the metadata dictionary
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# in case it isn't specified
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if not current_position:
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current_position = self.metadata['position']['current_chapter']
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position_reference = 1
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for i in reversed(self.metadata['toc']):
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if i[2] <= current_position:
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position_reference = i[2]
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break
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# Match the position reference to the corresponding
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# index in the QTreeView / QCombobox
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try:
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matchingIndex = self.tocModel.match(
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self.tocModel.index(0, 0),
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QtCore.Qt.UserRole,
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position_reference,
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2, QtCore.Qt.MatchRecursive)[0]
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except IndexError:
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return
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# A tocBox name is specified for the context menu
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if not tocBox:
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tocBox = self.main_window.bookToolBar.tocBox
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# The following sets the QCombobox index according
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# to the index found above.
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tocBox.blockSignals(True)
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currentRootModelIndex = tocBox.rootModelIndex()
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tocBox.setRootModelIndex(matchingIndex.parent())
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tocBox.setCurrentIndex(matchingIndex.row())
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tocBox.setRootModelIndex(currentRootModelIndex)
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tocBox.blockSignals(False)
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def format_view(
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self, font, font_size, foreground,
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background, padding, line_spacing,
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text_alignment):
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if self.are_we_doing_images_only:
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# Tab color does not need to be set separately in case
|
|
# no padding is set for the viewport of a QGraphicsView
|
|
# and image resizing in done in the pixmap
|
|
my_qbrush = QtGui.QBrush(QtCore.Qt.SolidPattern)
|
|
my_qbrush.setColor(background)
|
|
self.contentView.setBackgroundBrush(my_qbrush)
|
|
self.contentView.resizeEvent()
|
|
|
|
else:
|
|
self.contentView.setStyleSheet(
|
|
"QTextEdit {{font-family: {0}; font-size: {1}px; color: {2}; background-color: {3}}}".format(
|
|
font, font_size, foreground.name(), background.name()))
|
|
|
|
# Line spacing
|
|
# Set line spacing per a block format
|
|
# This is proportional line spacing so assume a divisor of 100
|
|
block_format = QtGui.QTextBlockFormat()
|
|
block_format.setLineHeight(
|
|
line_spacing, QtGui.QTextBlockFormat.ProportionalHeight)
|
|
|
|
block_format.setTextIndent(50)
|
|
|
|
# Give options for alignment
|
|
alignment_dict = {
|
|
'left': QtCore.Qt.AlignLeft,
|
|
'right': QtCore.Qt.AlignRight,
|
|
'center': QtCore.Qt.AlignCenter,
|
|
'justify': QtCore.Qt.AlignJustify}
|
|
|
|
current_index = self.main_window.bookToolBar.tocBox.currentIndex()
|
|
if current_index == 0:
|
|
block_format.setAlignment(
|
|
QtCore.Qt.AlignVCenter | QtCore.Qt.AlignHCenter)
|
|
else:
|
|
block_format.setAlignment(alignment_dict[text_alignment])
|
|
|
|
# Also for padding
|
|
# Using setViewPortMargins for this disables scrolling in the margins
|
|
block_format.setLeftMargin(padding)
|
|
block_format.setRightMargin(padding)
|
|
|
|
this_cursor = self.contentView.textCursor()
|
|
this_cursor.movePosition(QtGui.QTextCursor.Start, 0, 1)
|
|
|
|
# Iterate over the entire document block by block
|
|
# The document ends when the cursor position can no longer be incremented
|
|
while True:
|
|
old_position = this_cursor.position()
|
|
this_cursor.mergeBlockFormat(block_format)
|
|
this_cursor.movePosition(QtGui.QTextCursor.NextBlock, 0, 1)
|
|
new_position = this_cursor.position()
|
|
if old_position == new_position:
|
|
break
|
|
|
|
def hide_mouse(self):
|
|
self.contentView.viewport().setCursor(QtCore.Qt.BlankCursor)
|
|
|
|
def sneaky_change(self):
|
|
direction = -1
|
|
if self.sender().objectName() == 'nextChapter':
|
|
direction = 1
|
|
|
|
self.contentView.common_functions.change_chapter(
|
|
direction, True)
|
|
|
|
def sneaky_exit(self):
|
|
self.contentView.hide()
|
|
self.main_window.closeEvent()
|
|
|
|
|
|
class PliantQGraphicsScene(QtWidgets.QGraphicsScene):
|
|
def __init__(self, parent=None):
|
|
super(PliantQGraphicsScene, self).__init__(parent)
|
|
self.parent = parent
|
|
self._translate = QtCore.QCoreApplication.translate
|
|
|
|
def mouseReleaseEvent(self, event):
|
|
self.parent.previous_position = self.parent.pos()
|
|
|
|
image_files = '*.jpg *.png'
|
|
dialog_prompt = self._translate('PliantQGraphicsScene', 'Select new cover')
|
|
images_string = self._translate('PliantQGraphicsScene', 'Images')
|
|
new_cover = QtWidgets.QFileDialog.getOpenFileName(
|
|
None, dialog_prompt, self.parent.parent.settings['last_open_path'],
|
|
f'{images_string} ({image_files})')[0]
|
|
|
|
if not new_cover:
|
|
self.parent.show()
|
|
return
|
|
|
|
with open(new_cover, 'rb') as cover_ref:
|
|
cover_bytes = cover_ref.read()
|
|
resized_cover = resize_image(cover_bytes)
|
|
self.parent.cover_for_database = resized_cover
|
|
|
|
cover_pixmap = QtGui.QPixmap()
|
|
cover_pixmap.load(new_cover)
|
|
cover_pixmap = cover_pixmap.scaled(
|
|
140, 205, QtCore.Qt.IgnoreAspectRatio)
|
|
|
|
self.parent.load_cover(cover_pixmap, True)
|
|
self.parent.show()
|
|
|
|
|
|
class DragDropListView(QtWidgets.QListView):
|
|
# This is the library listview
|
|
def __init__(self, main_window, parent):
|
|
super(DragDropListView, self).__init__(parent)
|
|
self.main_window = main_window
|
|
self.setAcceptDrops(True)
|
|
self.setDragDropMode(QtWidgets.QAbstractItemView.InternalMove)
|
|
self.setSelectionMode(QtWidgets.QAbstractItemView.ExtendedSelection)
|
|
self.setResizeMode(QtWidgets.QListView.Fixed)
|
|
self.setLayoutMode(QtWidgets.QListView.SinglePass)
|
|
self.setViewMode(QtWidgets.QListView.IconMode)
|
|
self.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
|
|
self.setProperty("showDropIndicator", False)
|
|
self.setProperty("isWrapping", True)
|
|
self.setFrameShape(QtWidgets.QFrame.NoFrame)
|
|
self.setUniformItemSizes(True)
|
|
self.setWordWrap(True)
|
|
self.setObjectName("listView")
|
|
|
|
def dragEnterEvent(self, event):
|
|
if event.mimeData().hasUrls():
|
|
event.acceptProposedAction()
|
|
else:
|
|
super(DragDropListView, self).dragEnterEvent(event)
|
|
|
|
def dragMoveEvent(self, event):
|
|
super(DragDropListView, self).dragMoveEvent(event)
|
|
|
|
def dropEvent(self, event):
|
|
if event.mimeData().hasUrls():
|
|
file_list = [url.path() for url in event.mimeData().urls()]
|
|
self.main_window.process_post_hoc_files(file_list, False)
|
|
event.acceptProposedAction()
|
|
else:
|
|
super(DragDropListView, self).dropEvent(event)
|
|
|
|
|
|
class DragDropTableView(QtWidgets.QTableView):
|
|
# This is the library tableview
|
|
def __init__(self, main_window, parent):
|
|
super(DragDropTableView, self).__init__(parent)
|
|
self.main_window = main_window
|
|
self.setAcceptDrops(True)
|
|
self.setDragDropMode(QtWidgets.QAbstractItemView.InternalMove)
|
|
self.setFrameShape(QtWidgets.QFrame.Box)
|
|
self.setFrameShadow(QtWidgets.QFrame.Plain)
|
|
self.setSizeAdjustPolicy(
|
|
QtWidgets.QAbstractScrollArea.AdjustToContentsOnFirstShow)
|
|
self.setEditTriggers(
|
|
QtWidgets.QAbstractItemView.DoubleClicked |
|
|
QtWidgets.QAbstractItemView.EditKeyPressed |
|
|
QtWidgets.QAbstractItemView.SelectedClicked)
|
|
self.setAlternatingRowColors(True)
|
|
self.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
|
|
self.setGridStyle(QtCore.Qt.NoPen)
|
|
self.setSortingEnabled(True)
|
|
self.setWordWrap(False)
|
|
self.setObjectName("tableView")
|
|
self.horizontalHeader().setVisible(True)
|
|
self.verticalHeader().setVisible(False)
|
|
|
|
def dragEnterEvent(self, event):
|
|
if event.mimeData().hasUrls():
|
|
event.acceptProposedAction()
|
|
else:
|
|
super(DragDropTableView, self).dragEnterEvent(event)
|
|
|
|
def dragMoveEvent(self, event):
|
|
super(DragDropTableView, self).dragMoveEvent(event)
|
|
|
|
def dropEvent(self, event):
|
|
if event.mimeData().hasUrls():
|
|
file_list = [url.path() for url in event.mimeData().urls()]
|
|
self.main_window.process_post_hoc_files(file_list, False)
|
|
event.acceptProposedAction()
|
|
else:
|
|
super(DragDropTableView, self).dropEvent(event)
|