637 lines
24 KiB
Python
637 lines
24 KiB
Python
#!usr/bin/env python3
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# This file is a part of Lector, a Qt based ebook reader
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# Copyright (C) 2017 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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# Especially for comics
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import os
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from PyQt5 import QtWidgets, QtGui, QtCore
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from resources import pie_chart
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class Tab(QtWidgets.QWidget):
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def __init__(self, metadata, parent=None):
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super(Tab, self).__init__(parent)
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self.parent = parent
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self.metadata = metadata # Save progress data into this dictionary
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self.masterLayout = QtWidgets.QHBoxLayout(self)
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self.horzLayout = QtWidgets.QSplitter(self)
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self.horzLayout.setOrientation(QtCore.Qt.Horizontal)
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self.masterLayout.addWidget(self.horzLayout)
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self.metadata['last_accessed'] = QtCore.QDateTime().currentDateTime()
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position = self.metadata['position']
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if position:
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current_chapter = 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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chapter_name = list(self.metadata['content'])[current_chapter - 1]
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chapter_content = self.metadata['content'][chapter_name]
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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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self.are_we_doing_images_only = self.metadata['images_only']
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if self.are_we_doing_images_only: # Boolean
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self.contentView = PliantQGraphicsView(self.window(), self)
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self.contentView.loadImage(chapter_content)
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else:
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self.contentView = PliantQTextBrowser(self.window(), self)
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relative_path_root = os.path.join(
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self.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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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.contentView.setOpenLinks(False) # TODO Change this when HTML navigation works
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self.contentView.setHtml(chapter_content)
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self.contentView.setReadOnly(True)
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tempHiddenButton = QtWidgets.QToolButton(self)
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tempHiddenButton.setVisible(False)
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tempHiddenButton.clicked.connect(self.set_scroll_value)
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tempHiddenButton.animateClick(100)
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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(7)
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self.contentView.setHorizontalScrollBarPolicy(
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QtCore.Qt.ScrollBarAlwaysOff)
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# Create the dock widget for context specific display
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self.dockWidget = QtWidgets.QDockWidget(self)
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self.dockWidget.setFeatures(QtWidgets.QDockWidget.DockWidgetClosable)
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self.dockWidget.setFloating(False)
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self.dockWidget.hide()
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self.dockListView = QtWidgets.QListView(self.dockWidget)
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self.dockListView.setResizeMode(QtWidgets.QListWidget.Adjust)
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self.dockListView.setMaximumWidth(350)
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self.dockListView.setItemDelegate(BookmarkDelegate(self.dockListView))
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self.dockListView.setUniformItemSizes(True)
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self.dockListView.clicked.connect(self.navigate_to_bookmark)
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self.dockWidget.setWidget(self.dockListView)
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self.bookmark_model = QtGui.QStandardItemModel()
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self.generate_bookmark_model()
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self.dockListView.setModel(self.bookmark_model)
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self.generate_keyboard_shortcuts()
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self.horzLayout.addWidget(self.contentView)
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self.horzLayout.addWidget(self.dockWidget)
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title = self.metadata['title']
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self.parent.addTab(self, title)
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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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self.contentView.setFocus()
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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.window().lib_ref.view_model.index(0, 0)
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matching_item = self.window().lib_ref.view_model.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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self.window().lib_ref.view_model.setData(
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matching_item[0], self.metadata['last_accessed'], QtCore.Qt.UserRole + 12)
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def set_scroll_value(self, switch_widgets=True, search_data=None):
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# TODO
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# Bookmark navigation does not work in case 2 entries in the same
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# chapter are clicked successively
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if self.sender().objectName() == 'tabWidget':
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return
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if switch_widgets:
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previous_widget = self.window().tabWidget.currentWidget()
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self.window().tabWidget.setCurrentWidget(self)
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scroll_value = self.metadata['position']['scroll_value']
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if search_data:
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scroll_value = search_data[0]
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# Scroll a little ahead
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# This avoids confusion with potentially duplicate phrases
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# And the found result is at the top of the window
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scroll_position = scroll_value * self.contentView.verticalScrollBar().maximum()
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self.contentView.verticalScrollBar().setValue(scroll_position * 1.1)
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search_text = self.metadata['position']['last_visible_text']
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if search_data:
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search_text = search_data[1]
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if search_text:
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self.contentView.find(search_text)
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text_cursor = self.contentView.textCursor()
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text_cursor.clearSelection()
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self.contentView.setTextCursor(text_cursor)
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if switch_widgets:
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self.window().tabWidget.setCurrentWidget(previous_widget)
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def generate_position(self):
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total_chapters = len(self.metadata['content'].keys())
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# TODO
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# Calculate lines to incorporate into progress
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self.metadata['position'] = {
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'current_chapter': 1,
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'total_chapters': total_chapters,
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'scroll_value': 0,
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'last_visible_text': None}
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def generate_keyboard_shortcuts(self):
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self.next_chapter = QtWidgets.QShortcut(
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QtGui.QKeySequence('Right'), self.contentView)
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self.next_chapter.setObjectName('nextChapter')
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self.next_chapter.activated.connect(self.sneaky_change)
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self.prev_chapter = QtWidgets.QShortcut(
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QtGui.QKeySequence('Left'), self.contentView)
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self.prev_chapter.setObjectName('prevChapter')
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self.prev_chapter.activated.connect(self.sneaky_change)
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self.go_fs = QtWidgets.QShortcut(
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QtGui.QKeySequence('F11'), self.contentView)
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self.go_fs.activated.connect(self.go_fullscreen)
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self.exit_fs = QtWidgets.QShortcut(
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QtGui.QKeySequence('Escape'), self.contentView)
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self.exit_fs.setContext(QtCore.Qt.ApplicationShortcut)
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self.exit_fs.activated.connect(self.exit_fullscreen)
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# self.exit_all = QtWidgets.QShortcut(
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# QtGui.QKeySequence('Ctrl+Q'), self.contentView)
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# self.exit_all.activated.connect(self.sneaky_exit)
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def go_fullscreen(self):
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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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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.window().hide()
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def exit_fullscreen(self):
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self.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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def change_chapter_tocBox(self):
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chapter_name = self.window().bookToolBar.tocBox.currentText()
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required_content = self.metadata['content'][chapter_name]
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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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def format_view(self, font, font_size, foreground, background, padding, line_spacing):
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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
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# no padding is set for the viewport of a QGraphicsView
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# and image resizing in done in the pixmap
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my_qbrush = QtGui.QBrush(QtCore.Qt.SolidPattern)
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my_qbrush.setColor(background)
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self.contentView.setBackgroundBrush(my_qbrush)
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self.contentView.resizeEvent()
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else:
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self.contentView.setStyleSheet(
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"QTextEdit {{font-family: {0}; font-size: {1}px; color: {2}; background-color: {3}}}".format(
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font, font_size, foreground.name(), background.name()))
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# Line spacing
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# Iterate over each block using the QTextCursor
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# Set line spacing per a block format
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# This is proportional line spacing so assume a divisor of 100
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block_format = QtGui.QTextBlockFormat()
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block_format.setLineHeight(
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line_spacing, QtGui.QTextBlockFormat.ProportionalHeight)
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# TODO
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# Give options for alignment
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# block_format.setAlignment(QtCore.Qt.AlignJustify)
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# Also for padding
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# Using setViewPortMargins for this disables scrolling in the margins
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block_format.setLeftMargin(padding)
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block_format.setRightMargin(padding)
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this_cursor = self.contentView.textCursor()
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this_cursor.movePosition(QtGui.QTextCursor.Start, 0, 1)
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# Iterate over the entire document block by block
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# The document ends when the cursor position can no longer be incremented
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while True:
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old_position = this_cursor.position()
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this_cursor.mergeBlockFormat(block_format)
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this_cursor.movePosition(QtGui.QTextCursor.NextBlock, 0, 1)
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new_position = this_cursor.position()
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if old_position == new_position:
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break
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def toggle_bookmarks(self):
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self.dockWidget.setWindowTitle('Bookmarks')
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if self.dockWidget.isVisible():
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self.dockWidget.hide()
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else:
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self.dockWidget.show()
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def add_bookmark(self):
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chapter, scroll_position, visible_text = self.contentView.record_scroll_position(True)
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description = 'New bookmark'
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search_data = (scroll_position, visible_text)
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self.metadata['bookmarks'].append([
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chapter, search_data, description])
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self.add_bookmark_to_model(description, chapter, search_data)
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def generate_bookmark_model(self):
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bookmarks = self.metadata['bookmarks']
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if not bookmarks:
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self.metadata['bookmarks'] = []
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return
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# TODO
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# Replace this with proxy model sorting
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bookmarks.sort(key=lambda x: x[0])
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for i in bookmarks:
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self.add_bookmark_to_model(i[2], i[0], i[1])
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def add_bookmark_to_model(self, description, chapter, search_data):
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bookmark = QtGui.QStandardItem()
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bookmark.setData(description, QtCore.Qt.DisplayRole)
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bookmark.setData(chapter, QtCore.Qt.UserRole)
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bookmark.setData(search_data, QtCore.Qt.UserRole + 1)
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self.bookmark_model.appendRow(bookmark)
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def navigate_to_bookmark(self, index):
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if not index.isValid():
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return
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chapter = self.bookmark_model.data(index, QtCore.Qt.UserRole)
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search_data = self.bookmark_model.data(index, QtCore.Qt.UserRole + 1)
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self.window().bookToolBar.tocBox.setCurrentIndex(chapter - 1)
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self.set_scroll_value(False, search_data)
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def hide_mouse(self):
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self.contentView.setCursor(QtCore.Qt.BlankCursor)
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def sneaky_change(self):
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direction = -1
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if self.sender().objectName() == 'nextChapter':
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direction = 1
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self.contentView.common_functions.change_chapter(
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direction, True)
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def sneaky_exit(self):
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self.contentView.hide()
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self.window().closeEvent()
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class PliantQGraphicsView(QtWidgets.QGraphicsView):
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def __init__(self, main_window, parent=None):
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super(PliantQGraphicsView, self).__init__(parent)
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self.main_window = main_window
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self.parent = parent
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self.image_pixmap = None
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self.ignore_wheel_event = False
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self.ignore_wheel_event_number = 0
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self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag)
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self.common_functions = PliantWidgetsCommonFunctions(
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self, self.main_window)
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self.setMouseTracking(True)
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def loadImage(self, image_path):
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# TODO
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# Cache 4 images
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# For single page view: 1 before, 2 after
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# For double page view: 1 before, 1 after
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# Image panning with mouse
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self.image_pixmap = QtGui.QPixmap()
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self.image_pixmap.load(image_path)
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self.resizeEvent()
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def resizeEvent(self, event=None):
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if not self.image_pixmap:
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return
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zoom_mode = self.main_window.comic_profile['zoom_mode']
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padding = self.main_window.comic_profile['padding']
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if zoom_mode == 'fitWidth':
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available_width = self.viewport().width()
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image_pixmap = self.image_pixmap.scaledToWidth(
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available_width, QtCore.Qt.SmoothTransformation)
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elif zoom_mode == 'originalSize':
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image_pixmap = self.image_pixmap
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new_padding = (self.viewport().width() - image_pixmap.width()) // 2
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if new_padding < 0: # The image is larger than the viewport
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self.main_window.comic_profile['padding'] = 0
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else:
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self.main_window.comic_profile['padding'] = new_padding
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elif zoom_mode == 'bestFit':
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available_width = self.viewport().width()
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available_height = self.viewport().height()
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image_pixmap = self.image_pixmap.scaled(
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available_width, available_height,
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QtCore.Qt.KeepAspectRatio, QtCore.Qt.SmoothTransformation)
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self.main_window.comic_profile['padding'] = (
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self.viewport().width() - image_pixmap.width()) // 2
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elif zoom_mode == 'manualZoom':
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available_width = self.viewport().width() - 2 * padding
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image_pixmap = self.image_pixmap.scaledToWidth(
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available_width, QtCore.Qt.SmoothTransformation)
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graphics_scene = QtWidgets.QGraphicsScene()
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graphics_scene.addPixmap(image_pixmap)
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self.setScene(graphics_scene)
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self.show()
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def wheelEvent(self, event):
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self.common_functions.wheelEvent(event, True)
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def keyPressEvent(self, event):
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# This function is sufficiently different to warrant
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# exclusion from the common functions class
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if event.key() == 32: # Spacebar press
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vertical = self.verticalScrollBar().value()
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maximum = self.verticalScrollBar().maximum()
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if vertical == maximum:
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self.common_functions.change_chapter(1, True)
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else:
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# Increment by following value
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scroll_increment = int((maximum - 0) / 2)
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self.verticalScrollBar().setValue(vertical + scroll_increment)
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def mouseMoveEvent(self, event):
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self.setCursor(QtCore.Qt.ArrowCursor)
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self.parent.mouse_hide_timer.start(3000)
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class PliantQTextBrowser(QtWidgets.QTextBrowser):
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def __init__(self, main_window, parent=None):
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super(PliantQTextBrowser, self).__init__(parent)
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self.main_window = main_window
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self.parent = parent
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self.ignore_wheel_event = False
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self.ignore_wheel_event_number = 0
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self.common_functions = PliantWidgetsCommonFunctions(
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self, self.main_window)
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self.verticalScrollBar().sliderMoved.connect(self.record_scroll_position)
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self.setMouseTracking(True)
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def wheelEvent(self, event):
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self.record_scroll_position()
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self.common_functions.wheelEvent(event, False)
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def keyPressEvent(self, event):
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if event.key() == 32:
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self.record_scroll_position()
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if self.verticalScrollBar().value() == self.verticalScrollBar().maximum():
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self.common_functions.change_chapter(1, True)
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else:
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QtWidgets.QTextEdit.keyPressEvent(self, event)
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else:
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QtWidgets.QTextEdit.keyPressEvent(self, event)
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def record_scroll_position(self, return_as_bookmark=False):
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vertical = self.verticalScrollBar().value()
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maximum = self.verticalScrollBar().maximum()
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self.parent.metadata['position']['scroll_value'] = 1
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if maximum != 0:
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self.parent.metadata['position']['scroll_value'] = (vertical / maximum)
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cursor = self.cursorForPosition(QtCore.QPoint(0, 0))
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bottom_right = QtCore.QPoint(self.viewport().width() - 1, self.viewport().height())
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bottom_right_cursor = self.cursorForPosition(bottom_right).position()
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cursor.setPosition(bottom_right_cursor, QtGui.QTextCursor.KeepAnchor)
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visible_text = cursor.selectedText()
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if len(visible_text) > 50:
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visible_text = visible_text[:51]
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if return_as_bookmark:
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return (self.parent.metadata['position']['current_chapter'],
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self.parent.metadata['position']['scroll_value'],
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visible_text)
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else:
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self.parent.metadata['position']['last_visible_text'] = visible_text
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# def mouseMoveEvent(self, event):
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# TODO
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# This does not work as expected
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# event.accept()
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# self.setCursor(QtCore.Qt.ArrowCursor)
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# self.parent.mouse_hide_timer.start(3000)
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class PliantWidgetsCommonFunctions():
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def __init__(self, parent_widget, main_window):
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|
self.pw = parent_widget
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|
self.main_window = main_window
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|
|
|
def wheelEvent(self, event, are_we_doing_images_only):
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|
ignore_events = 20
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|
if are_we_doing_images_only:
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|
ignore_events = 10
|
|
|
|
if self.pw.ignore_wheel_event:
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|
self.pw.ignore_wheel_event_number += 1
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|
if self.pw.ignore_wheel_event_number > ignore_events:
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|
self.pw.ignore_wheel_event = False
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|
self.pw.ignore_wheel_event_number = 0
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return
|
|
|
|
if are_we_doing_images_only:
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|
QtWidgets.QGraphicsView.wheelEvent(self.pw, event)
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|
else:
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|
QtWidgets.QTextBrowser.wheelEvent(self.pw, event)
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|
|
|
# Since this is a delta on a mouse move event, it cannot ever be 0
|
|
vertical_pdelta = event.pixelDelta().y()
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|
if vertical_pdelta > 0:
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|
moving_up = True
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|
elif vertical_pdelta < 0:
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|
moving_up = False
|
|
|
|
if abs(vertical_pdelta) > 80: # Adjust sensitivity here
|
|
# Implies that no scrollbar movement is possible
|
|
if self.pw.verticalScrollBar().value() == self.pw.verticalScrollBar().maximum() == 0:
|
|
if moving_up:
|
|
self.change_chapter(-1)
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|
else:
|
|
self.change_chapter(1)
|
|
|
|
# Implies that the scrollbar is at the bottom
|
|
elif self.pw.verticalScrollBar().value() == self.pw.verticalScrollBar().maximum():
|
|
if not moving_up:
|
|
self.change_chapter(1)
|
|
|
|
# Implies scrollbar is at the top
|
|
elif self.pw.verticalScrollBar().value() == 0:
|
|
if moving_up:
|
|
self.change_chapter(-1)
|
|
|
|
def change_chapter(self, direction, was_button_pressed=None):
|
|
current_toc_index = self.main_window.bookToolBar.tocBox.currentIndex()
|
|
max_toc_index = self.main_window.bookToolBar.tocBox.count() - 1
|
|
|
|
if (current_toc_index < max_toc_index and direction == 1) or (
|
|
current_toc_index > 0 and direction == -1):
|
|
self.main_window.bookToolBar.tocBox.setCurrentIndex(current_toc_index + direction)
|
|
|
|
# Set page position depending on if the chapter number is increasing or decreasing
|
|
if direction == 1 or was_button_pressed:
|
|
self.pw.verticalScrollBar().setValue(0)
|
|
else:
|
|
self.pw.verticalScrollBar().setValue(
|
|
self.pw.verticalScrollBar().maximum())
|
|
|
|
if not was_button_pressed:
|
|
self.pw.ignore_wheel_event = True
|
|
|
|
|
|
class LibraryDelegate(QtWidgets.QStyledItemDelegate):
|
|
def __init__(self, temp_dir, parent=None):
|
|
super(LibraryDelegate, self).__init__(parent)
|
|
self.temp_dir = temp_dir
|
|
self.parent = parent
|
|
|
|
def paint(self, painter, option, index):
|
|
# This is a hint for the future
|
|
# Color icon slightly red
|
|
# if option.state & QtWidgets.QStyle.State_Selected:
|
|
# painter.fillRect(option.rect, QtGui.QColor().fromRgb(255, 0, 0, 20))
|
|
|
|
option = option.__class__(option)
|
|
file_exists = index.data(QtCore.Qt.UserRole + 5)
|
|
position = index.data(QtCore.Qt.UserRole + 7)
|
|
|
|
# The shadow pixmap currently is set to 420 x 600
|
|
# Only draw the cover shadow in case the setting is enabled
|
|
if self.parent.settings['cover_shadows']:
|
|
shadow_pixmap = QtGui.QPixmap()
|
|
shadow_pixmap.load(':/images/gray-shadow.png')
|
|
shadow_pixmap = shadow_pixmap.scaled(160, 230, QtCore.Qt.IgnoreAspectRatio)
|
|
shadow_x = option.rect.topLeft().x() + 10
|
|
shadow_y = option.rect.topLeft().y() - 5
|
|
painter.setOpacity(.7)
|
|
painter.drawPixmap(shadow_x, shadow_y, shadow_pixmap)
|
|
painter.setOpacity(1)
|
|
|
|
if not file_exists:
|
|
painter.setOpacity(.7)
|
|
QtWidgets.QStyledItemDelegate.paint(self, painter, option, index)
|
|
read_icon = pie_chart.pixmapper(-1, None, None, 36)
|
|
x_draw = option.rect.bottomRight().x() - 30
|
|
y_draw = option.rect.bottomRight().y() - 35
|
|
painter.drawPixmap(x_draw, y_draw, read_icon)
|
|
painter.setOpacity(1)
|
|
return
|
|
|
|
QtWidgets.QStyledItemDelegate.paint(self, painter, option, index)
|
|
if position:
|
|
current_chapter = position['current_chapter']
|
|
total_chapters = position['total_chapters']
|
|
|
|
read_icon = pie_chart.pixmapper(
|
|
current_chapter, total_chapters, self.temp_dir, 36)
|
|
|
|
x_draw = option.rect.bottomRight().x() - 30
|
|
y_draw = option.rect.bottomRight().y() - 35
|
|
if current_chapter != 1:
|
|
painter.drawPixmap(x_draw, y_draw, read_icon)
|
|
|
|
|
|
class BookmarkDelegate(QtWidgets.QStyledItemDelegate):
|
|
def __init__(self, parent=None):
|
|
super(BookmarkDelegate, self).__init__(parent)
|
|
self.parent = parent
|
|
|
|
def sizeHint(self, *args):
|
|
dockwidget_width = self.parent.width()
|
|
return QtCore.QSize(dockwidget_width, 50)
|
|
|
|
def paint(self, painter, option, index):
|
|
# TODO
|
|
# Alignment of the painted item
|
|
|
|
option = option.__class__(option)
|
|
|
|
chapter_index = index.data(QtCore.Qt.UserRole)
|
|
chapter_name = self.parent.window().bookToolBar.tocBox.itemText(chapter_index - 1)
|
|
|
|
painter.save()
|
|
painter.translate(0, -10)
|
|
QtWidgets.QStyledItemDelegate.paint(self, painter, option, index)
|
|
painter.restore()
|
|
|
|
painter.drawText(
|
|
option.rect,
|
|
QtCore.Qt.AlignBottom|QtCore.Qt.AlignLeft|QtCore.Qt.TextWordWrap,
|
|
' ' + chapter_name)
|