Split content display widgets into new module
This commit is contained in:
BasioMeusPuga
@@ -1,7 +1,7 @@
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#!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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# Copyright (C) 2017-2018 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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@@ -21,23 +21,15 @@
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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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import uuid
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import zipfile
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try:
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import popplerqt5
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except ImportError:
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pass
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from PyQt5 import QtWidgets, QtGui, QtCore
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from lector.rarfile import rarfile
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from lector.models import BookmarkProxyModel
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from lector.delegates import BookmarkDelegate
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from lector.threaded import BackGroundCacheRefill
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from lector.sorter import resize_image
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from lector.contentwidgets import PliantQGraphicsView, PliantQTextBrowser
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class Tab(QtWidgets.QWidget):
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@@ -506,543 +498,6 @@ class Tab(QtWidgets.QWidget):
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self.main_window.closeEvent()
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class PliantQGraphicsView(QtWidgets.QGraphicsView):
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def __init__(self, filepath, main_window, parent=None):
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super(PliantQGraphicsView, self).__init__(parent)
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self._translate = QtCore.QCoreApplication.translate
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self.parent = parent
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self.main_window = main_window
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self.qimage = None # Will be needed to resize pdf
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self.image_pixmap = None
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self.image_cache = [None for _ in range(4)]
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self.thread = None
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self.filepath = filepath
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self.filetype = os.path.splitext(self.filepath)[1][1:]
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if self.filetype == 'cbz':
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self.book = zipfile.ZipFile(self.filepath)
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elif self.filetype == 'cbr':
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self.book = rarfile.RarFile(self.filepath)
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elif self.filetype == 'pdf':
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self.book = popplerqt5.Poppler.Document.load(self.filepath)
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self.book.setRenderHint(
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popplerqt5.Poppler.Document.Antialiasing
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and popplerqt5.Poppler.Document.TextAntialiasing)
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self.common_functions = PliantWidgetsCommonFunctions(
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self, self.main_window)
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# TODO
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# Image panning with mouse
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self.ignore_wheel_event = False
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self.ignore_wheel_event_number = 0
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self.setMouseTracking(True)
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self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag)
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self.viewport().setCursor(QtCore.Qt.ArrowCursor)
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self.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
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self.customContextMenuRequested.connect(
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self.generate_graphicsview_context_menu)
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def loadImage(self, current_page):
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# TODO
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# For double page view: 1 before, 1 after
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all_pages = [i[1] for i in self.parent.metadata['content']]
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def load_page(current_page):
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image_pixmap = QtGui.QPixmap()
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if self.filetype in ('cbz', 'cbr'):
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page_data = self.book.read(current_page)
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image_pixmap.loadFromData(page_data)
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elif self.filetype == 'pdf':
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page_data = self.book.page(current_page)
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page_qimage = page_data.renderToImage(400, 400) # TODO Maybe this needs a setting?
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image_pixmap.convertFromImage(page_qimage)
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return image_pixmap
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def generate_image_cache(current_page):
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print('Building image cache')
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current_page_index = all_pages.index(current_page)
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for i in (-1, 0, 1, 2):
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try:
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this_page = all_pages[current_page_index + i]
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this_pixmap = load_page(this_page)
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self.image_cache[i + 1] = (this_page, this_pixmap)
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except IndexError:
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self.image_cache[i + 1] = None
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def refill_cache(remove_value):
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# Do NOT put a parent in here or the mother of all
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# memory leaks will result
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self.thread = BackGroundCacheRefill(
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self.image_cache, remove_value,
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self.filetype, self.book, all_pages)
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self.thread.finished.connect(overwrite_cache)
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self.thread.start()
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def overwrite_cache():
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self.image_cache = self.thread.image_cache
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def check_cache(current_page):
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for i in self.image_cache:
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if i:
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if i[0] == current_page:
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return_pixmap = i[1]
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refill_cache(i)
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return return_pixmap
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# No return happened so the image isn't in the cache
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generate_image_cache(current_page)
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if self.main_window.settings['caching_enabled']:
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return_pixmap = None
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while not return_pixmap:
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return_pixmap = check_cache(current_page)
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else:
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return_pixmap = load_page(current_page)
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self.image_pixmap = return_pixmap
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self.resizeEvent()
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def resizeEvent(self, *args):
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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)
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def keyPressEvent(self, event):
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vertical = self.verticalScrollBar().value()
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maximum = self.verticalScrollBar().maximum()
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def scroller(increment, move_forward=True):
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if move_forward:
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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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next_val = vertical + increment
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if next_val >= .95 * maximum:
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next_val = maximum
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self.verticalScrollBar().setValue(next_val)
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else:
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if vertical == 0:
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self.common_functions.change_chapter(-1, False)
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else:
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next_val = vertical - increment
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if next_val <= .05 * maximum:
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next_val = 0
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self.verticalScrollBar().setValue(next_val)
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small_increment = maximum // 4
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big_increment = maximum // 2
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if event.key() == QtCore.Qt.Key_Up:
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scroller(small_increment, False)
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if event.key() == QtCore.Qt.Key_Down:
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scroller(small_increment)
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if event.key() == QtCore.Qt.Key_Space:
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scroller(big_increment)
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view_modification_keys = (
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QtCore.Qt.Key_Plus, QtCore.Qt.Key_Minus, QtCore.Qt.Key_Equal,
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QtCore.Qt.Key_B, QtCore.Qt.Key_W, QtCore.Qt.Key_O)
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if event.key() in view_modification_keys:
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self.main_window.modify_comic_view(event.key())
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def record_position(self):
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self.parent.metadata['position']['is_read'] = False
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self.common_functions.update_model()
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def mouseMoveEvent(self, *args):
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self.viewport().setCursor(QtCore.Qt.ArrowCursor)
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self.parent.mouse_hide_timer.start(3000)
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def generate_graphicsview_context_menu(self, position):
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contextMenu = QtWidgets.QMenu()
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saveAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('filesaveas'),
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self._translate('PliantQGraphicsView', 'Save page as...'))
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fsToggleAction = dfToggleAction = 'Caesar si viveret, ad remum dareris'
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if self.parent.is_fullscreen:
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fsToggleAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('view-fullscreen'),
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self._translate('PliantQGraphicsView', 'Exit fullscreen'))
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else:
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if self.main_window.settings['show_bars']:
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distraction_free_prompt = self._translate(
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'PliantQGraphicsView', 'Distraction Free mode')
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else:
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distraction_free_prompt = self._translate(
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'PliantQGraphicsView', 'Exit Distraction Free mode')
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dfToggleAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('visibility'),
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distraction_free_prompt)
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viewSubMenu = contextMenu.addMenu('View')
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viewSubMenu.setIcon(
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self.main_window.QImageFactory.get_image('mail-thread-watch'))
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zoominAction = viewSubMenu.addAction(
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self.main_window.QImageFactory.get_image('zoom-in'),
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self._translate('PliantQGraphicsView', 'Zoom in (+)'))
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zoomoutAction = viewSubMenu.addAction(
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self.main_window.QImageFactory.get_image('zoom-out'),
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self._translate('PliantQGraphicsView', 'Zoom out (-)'))
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fitWidthAction = viewSubMenu.addAction(
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self.main_window.QImageFactory.get_image('zoom-fit-width'),
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self._translate('PliantQGraphicsView', 'Fit width (W)'))
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bestFitAction = viewSubMenu.addAction(
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self.main_window.QImageFactory.get_image('zoom-fit-best'),
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self._translate('PliantQGraphicsView', 'Best fit (B)'))
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originalSizeAction = viewSubMenu.addAction(
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self.main_window.QImageFactory.get_image('zoom-original'),
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self._translate('PliantQGraphicsView', 'Original size (O)'))
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bookmarksToggleAction = 'Latin quote 2. Electric Boogaloo.'
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if not self.main_window.settings['show_bars'] or self.parent.is_fullscreen:
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bookmarksToggleAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('bookmarks'),
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self._translate('PliantQGraphicsView', 'Bookmarks'))
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self.common_functions.generate_combo_box_action(contextMenu)
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action = contextMenu.exec_(self.sender().mapToGlobal(position))
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if action == saveAction:
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dialog_prompt = self._translate('Main_UI', 'Save page as...')
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extension_string = self._translate('Main_UI', 'Images')
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save_file = QtWidgets.QFileDialog.getSaveFileName(
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self, dialog_prompt, self.main_window.settings['last_open_path'],
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f'{extension_string} (*.png *.jpg *.bmp)')
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if save_file:
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self.image_pixmap.save(save_file[0])
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if action == bookmarksToggleAction:
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self.parent.toggle_bookmarks()
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if action == dfToggleAction:
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self.main_window.toggle_distraction_free()
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if action == fsToggleAction:
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self.parent.exit_fullscreen()
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view_action_dict = {
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zoominAction: QtCore.Qt.Key_Plus,
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zoomoutAction: QtCore.Qt.Key_Minus,
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fitWidthAction: QtCore.Qt.Key_W,
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bestFitAction: QtCore.Qt.Key_B,
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originalSizeAction: QtCore.Qt.Key_O}
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if action in view_action_dict:
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self.main_window.modify_comic_view(view_action_dict[action])
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def closeEvent(self, *args):
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# In case the program is closed when a contentView is fullscreened
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self.main_window.closeEvent()
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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._translate = QtCore.QCoreApplication.translate
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self.parent = parent
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self.main_window = main_window
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self.common_functions = PliantWidgetsCommonFunctions(
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self, self.main_window)
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self.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
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self.customContextMenuRequested.connect(
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self.generate_textbrowser_context_menu)
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self.setMouseTracking(True)
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self.viewport().setCursor(QtCore.Qt.IBeamCursor)
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self.verticalScrollBar().sliderMoved.connect(
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self.record_position)
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self.ignore_wheel_event = False
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self.ignore_wheel_event_number = 0
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def wheelEvent(self, event):
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self.record_position()
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self.common_functions.wheelEvent(event)
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def keyPressEvent(self, event):
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QtWidgets.QTextEdit.keyPressEvent(self, event)
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if event.key() == QtCore.Qt.Key_Space:
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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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self.set_top_line_cleanly()
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self.record_position()
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def set_top_line_cleanly(self):
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# Find the cursor position of the top line and move to it
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find_cursor = self.cursorForPosition(QtCore.QPoint(0, 0))
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find_cursor.movePosition(
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find_cursor.position(), QtGui.QTextCursor.KeepAnchor)
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self.setTextCursor(find_cursor)
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self.ensureCursorVisible()
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def record_position(self, return_as_bookmark=False):
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self.parent.metadata['position']['is_read'] = False
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cursor = self.cursorForPosition(QtCore.QPoint(0, 0))
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cursor_position = cursor.position()
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# Current block for progress measurement
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current_block = cursor.block().blockNumber()
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current_chapter = self.parent.metadata['position']['current_chapter']
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blocks_per_chapter = self.parent.metadata['position']['blocks_per_chapter']
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block_sum = sum(blocks_per_chapter[:(current_chapter - 1)])
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block_sum += current_block
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# This 'current_block' refers to the number of
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# blocks in the book upto this one
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self.parent.metadata['position']['current_block'] = block_sum
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self.common_functions.update_model()
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if return_as_bookmark:
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return (self.parent.metadata['position']['current_chapter'],
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cursor_position)
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else:
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self.parent.metadata['position']['cursor_position'] = cursor_position
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def generate_textbrowser_context_menu(self, position):
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selected_word = self.textCursor().selection()
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selected_word = selected_word.toPlainText()
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contextMenu = QtWidgets.QMenu()
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# The following cannot be None because a click
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# outside the menu means that the action variable is None.
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defineAction = fsToggleAction = dfToggleAction = 'Caesar si viveret, ad remum dareris'
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if selected_word and selected_word != '':
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selected_word = selected_word.split()[0]
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define_string = self._translate('PliantQTextBrowser', 'Define')
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defineAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('view-readermode'),
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f'{define_string} "{selected_word}"')
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searchAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('search'),
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self._translate('PliantQTextBrowser', 'Search'))
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if self.parent.is_fullscreen:
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fsToggleAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('view-fullscreen'),
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self._translate('PliantQTextBrowser', 'Exit fullscreen'))
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else:
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if self.main_window.settings['show_bars']:
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distraction_free_prompt = self._translate(
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'PliantQTextBrowser', 'Distraction Free mode')
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else:
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distraction_free_prompt = self._translate(
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'PliantQTextBrowser', 'Exit Distraction Free mode')
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dfToggleAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('visibility'),
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distraction_free_prompt)
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bookmarksToggleAction = 'Latin quote 2. Electric Boogaloo.'
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if not self.main_window.settings['show_bars'] or self.parent.is_fullscreen:
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bookmarksToggleAction = contextMenu.addAction(
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self.main_window.QImageFactory.get_image('bookmarks'),
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self._translate('PliantQTextBrowser', 'Bookmarks'))
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self.common_functions.generate_combo_box_action(contextMenu)
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action = contextMenu.exec_(self.sender().mapToGlobal(position))
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if action == defineAction:
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self.main_window.definitionDialog.find_definition(selected_word)
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if action == searchAction:
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self.main_window.bookToolBar.searchBar.setFocus()
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if action == bookmarksToggleAction:
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self.parent.toggle_bookmarks()
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if action == fsToggleAction:
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self.parent.exit_fullscreen()
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if action == dfToggleAction:
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self.main_window.toggle_distraction_free()
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def closeEvent(self, *args):
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self.main_window.closeEvent()
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def mouseMoveEvent(self, event):
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self.viewport().setCursor(QtCore.Qt.IBeamCursor)
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self.parent.mouse_hide_timer.start(3000)
|
||||
QtWidgets.QTextBrowser.mouseMoveEvent(self, event)
|
||||
|
||||
|
||||
class PliantWidgetsCommonFunctions:
|
||||
def __init__(self, parent_widget, main_window):
|
||||
self.pw = parent_widget
|
||||
self.main_window = main_window
|
||||
self.are_we_doing_images_only = self.pw.parent.are_we_doing_images_only
|
||||
|
||||
def wheelEvent(self, event):
|
||||
ignore_events = 20
|
||||
if self.are_we_doing_images_only:
|
||||
ignore_events = 10
|
||||
|
||||
if self.pw.ignore_wheel_event:
|
||||
self.pw.ignore_wheel_event_number += 1
|
||||
if self.pw.ignore_wheel_event_number > ignore_events:
|
||||
self.pw.ignore_wheel_event = False
|
||||
self.pw.ignore_wheel_event_number = 0
|
||||
return
|
||||
|
||||
if self.are_we_doing_images_only:
|
||||
QtWidgets.QGraphicsView.wheelEvent(self.pw, event)
|
||||
else:
|
||||
QtWidgets.QTextBrowser.wheelEvent(self.pw, event)
|
||||
|
||||
# Since this is a delta on a mouse move event, it cannot ever be 0
|
||||
vertical_pdelta = event.pixelDelta().y()
|
||||
if vertical_pdelta > 0:
|
||||
moving_up = True
|
||||
elif vertical_pdelta < 0:
|
||||
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)
|
||||
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
|
||||
|
||||
if not self.are_we_doing_images_only:
|
||||
self.pw.record_position()
|
||||
|
||||
def update_model(self):
|
||||
# We're updating the underlying model to have real-time
|
||||
# updates on the read status
|
||||
|
||||
# Set a baseline model index in case the item gets deleted
|
||||
# E.g It's open in a tab and deleted from the library
|
||||
model_index = None
|
||||
start_index = self.main_window.lib_ref.view_model.index(0, 0)
|
||||
|
||||
# Find index of the model item that corresponds to the tab
|
||||
model_index = self.main_window.lib_ref.view_model.match(
|
||||
start_index,
|
||||
QtCore.Qt.UserRole + 6,
|
||||
self.pw.parent.metadata['hash'],
|
||||
1, QtCore.Qt.MatchExactly)
|
||||
|
||||
if self.are_we_doing_images_only:
|
||||
position_percentage = (self.pw.parent.metadata['position']['current_chapter'] /
|
||||
self.pw.parent.metadata['position']['total_chapters'])
|
||||
else:
|
||||
position_percentage = (self.pw.parent.metadata['position']['current_block'] /
|
||||
self.pw.parent.metadata['position']['total_blocks'])
|
||||
|
||||
# Update position percentage
|
||||
if model_index:
|
||||
self.main_window.lib_ref.view_model.setData(
|
||||
model_index[0], position_percentage, QtCore.Qt.UserRole + 7)
|
||||
|
||||
def generate_combo_box_action(self, contextMenu):
|
||||
contextMenu.addSeparator()
|
||||
|
||||
toc_combobox = QtWidgets.QComboBox()
|
||||
toc_data = [i[0] for i in self.pw.parent.metadata['content']]
|
||||
toc_combobox.addItems(toc_data)
|
||||
toc_combobox.setCurrentIndex(
|
||||
self.pw.main_window.bookToolBar.tocBox.currentIndex())
|
||||
toc_combobox.currentIndexChanged.connect(
|
||||
self.pw.main_window.bookToolBar.tocBox.setCurrentIndex)
|
||||
|
||||
comboboxAction = QtWidgets.QWidgetAction(self.pw)
|
||||
comboboxAction.setDefaultWidget(toc_combobox)
|
||||
contextMenu.addAction(comboboxAction)
|
||||
|
||||
|
||||
class PliantDockWidget(QtWidgets.QDockWidget):
|
||||
def __init__(self, main_window, contentView, parent=None):
|
||||
super(PliantDockWidget, self).__init__()
|
||||
|
||||
Reference in New Issue
Block a user