def refill_cache(remove_value):
# Do NOT put a parent in here or the mother of all
# memory leaks will result
self.thread = BackGroundCacheRefill(self.image_cache, remove_value,
self.filetype, self.book,
all_pages)
self.thread.finished.connect(overwrite_cache)
self.thread.start()
def refill_cache(remove_value):
# Do NOT put a parent in here or the mother of all
# memory leaks will result
self.thread = BackGroundCacheRefill(
self.image_cache, remove_value,
self.filetype, self.book, all_pages)
self.thread.finished.connect(overwrite_cache)
self.thread.start()
class PliantQGraphicsView(QtWidgets.QGraphicsView):
def __init__(self, filepath, main_window, parent=None):
super(PliantQGraphicsView, self).__init__(parent)
self._translate = QtCore.QCoreApplication.translate
self.parent = parent
self.main_window = main_window
self.image_pixmap = None
self.image_cache = [None for _ in range(4)]
self.thread = None
self.annotation_dict = self.parent.metadata['annotations']
self.filepath = filepath
self.filetype = os.path.splitext(self.filepath)[1][1:]
if self.filetype == 'cbz':
self.book = zipfile.ZipFile(self.filepath)
elif self.filetype == 'cbr':
self.book = rarfile.RarFile(self.filepath)
elif self.filetype == 'pdf':
self.book = fitz.open(self.filepath)
self.common_functions = PliantWidgetsCommonFunctions(
self, self.main_window)
self.ignore_wheel_event = False
self.ignore_wheel_event_number = 0
self.setMouseTracking(True)
self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag)
self.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
self.customContextMenuRequested.connect(
self.generate_graphicsview_context_menu)
def loadImage(self, current_page):
all_pages = self.parent.metadata['content']
current_page_index = all_pages.index(current_page)
double_page_mode = False
if (self.main_window.settings['double_page_mode']
and (current_page_index not in (0, len(all_pages) - 1))):
double_page_mode = True
def load_page(current_page):
def page_loader(page):
pixmap = QtGui.QPixmap()
if self.filetype in ('cbz', 'cbr'):
page_data = self.book.read(page)
pixmap.loadFromData(page_data)
elif self.filetype == 'pdf':
page_data = self.book.loadPage(page)
pixmap = render_pdf_page(page_data)
return pixmap
firstPixmap = page_loader(current_page)
if not double_page_mode:
return firstPixmap
next_page = all_pages[current_page_index + 1]
secondPixmap = page_loader(next_page)
# Pixmap height should be the greater of the 2 images
pixmap_height = firstPixmap.height()
if secondPixmap.height() > pixmap_height:
pixmap_height = secondPixmap.height()
bigPixmap = QtGui.QPixmap(
firstPixmap.width() + secondPixmap.width() + 5, pixmap_height)
bigPixmap.fill(QtCore.Qt.transparent)
imagePainter = QtGui.QPainter(bigPixmap)
manga_mode = self.main_window.settings['manga_mode']
if manga_mode:
imagePainter.drawPixmap(0, 0, secondPixmap)
imagePainter.drawPixmap(secondPixmap.width() + 4, 0,
firstPixmap)
else:
imagePainter.drawPixmap(0, 0, firstPixmap)
imagePainter.drawPixmap(firstPixmap.width() + 4, 0,
secondPixmap)
imagePainter.end()
return bigPixmap
def generate_image_cache(current_page):
logger.info('(Re)building image cache')
current_page_index = all_pages.index(current_page)
# Image caching for single and double page views
page_indices = (-1, 0, 1, 2)
index_modifier = 0
if double_page_mode:
index_modifier = 1
for i in page_indices:
try:
this_page = all_pages[current_page_index + i +
index_modifier]
this_pixmap = load_page(this_page)
self.image_cache[i + 1] = (this_page, this_pixmap)
except IndexError:
self.image_cache[i + 1] = None
def refill_cache(remove_value):
# Do NOT put a parent in here or the mother of all
# memory leaks will result
self.thread = BackGroundCacheRefill(self.image_cache, remove_value,
self.filetype, self.book,
all_pages)
self.thread.finished.connect(overwrite_cache)
self.thread.start()
def overwrite_cache():
self.image_cache = self.thread.image_cache
def check_cache(current_page):
for i in self.image_cache:
if i:
if i[0] == current_page:
return_pixmap = i[1]
refill_cache(i)
return return_pixmap
# No return happened so the image isn't in the cache
generate_image_cache(current_page)
# TODO
# Get caching working for double page view
if not double_page_mode and self.main_window.settings[
'caching_enabled']:
return_pixmap = None
while not return_pixmap:
return_pixmap = check_cache(current_page)
else:
return_pixmap = load_page(current_page)
self.image_pixmap = return_pixmap
self.resizeEvent()
def resizeEvent(self, *args):
if not self.image_pixmap:
return
zoom_mode = self.main_window.comic_profile['zoom_mode']
padding = self.main_window.comic_profile['padding']
if zoom_mode == 'fitWidth':
available_width = self.viewport().width()
image_pixmap = self.image_pixmap.scaledToWidth(
available_width, QtCore.Qt.SmoothTransformation)
elif zoom_mode == 'originalSize':
image_pixmap = self.image_pixmap
new_padding = (self.viewport().width() - image_pixmap.width()) // 2
if new_padding < 0: # The image is larger than the viewport
self.main_window.comic_profile['padding'] = 0
else:
self.main_window.comic_profile['padding'] = new_padding
elif zoom_mode == 'bestFit':
available_width = self.viewport().width()
available_height = self.viewport().height()
image_pixmap = self.image_pixmap.scaled(
available_width, available_height, QtCore.Qt.KeepAspectRatio,
QtCore.Qt.SmoothTransformation)
self.main_window.comic_profile['padding'] = (
self.viewport().width() - image_pixmap.width()) // 2
elif zoom_mode == 'manualZoom':
available_width = self.viewport().width() - 2 * padding
image_pixmap = self.image_pixmap.scaledToWidth(
available_width, QtCore.Qt.SmoothTransformation)
graphicsScene = QtWidgets.QGraphicsScene()
graphicsScene.addPixmap(image_pixmap)
self.setScene(graphicsScene)
self.show()
# This prevents a partial page scroll on first load
self.verticalScrollBar().setValue(0)
def wheelEvent(self, event):
self.common_functions.wheelEvent(event)
def keyPressEvent(self, event):
vertical = self.verticalScrollBar().value()
maximum = self.verticalScrollBar().maximum()
def scroller(increment, move_forward=True):
if move_forward:
if vertical == maximum:
self.common_functions.change_chapter(1, True)
else:
next_val = vertical + increment
if next_val >= .95 * maximum:
next_val = maximum
self.verticalScrollBar().setValue(next_val)
else:
if vertical == 0:
self.common_functions.change_chapter(-1, False)
else:
next_val = vertical - increment
if next_val <= .05 * maximum:
next_val = 0
self.verticalScrollBar().setValue(next_val)
small_increment = maximum // self.main_window.settings[
'small_increment']
big_increment = maximum // self.main_window.settings['large_increment']
# Scrolling
if event.key() == QtCore.Qt.Key_Up:
scroller(small_increment, False)
if event.key() == QtCore.Qt.Key_Down:
scroller(small_increment)
if event.key() == QtCore.Qt.Key_Space:
scroller(big_increment)
# Double page mode and manga mode
if event.key() in (QtCore.Qt.Key_D, QtCore.Qt.Key_M):
self.main_window.change_page_view(event.key())
# Image fit modes
view_modification_keys = (QtCore.Qt.Key_Plus, QtCore.Qt.Key_Minus,
QtCore.Qt.Key_Equal, QtCore.Qt.Key_B,
QtCore.Qt.Key_W, QtCore.Qt.Key_O)
if event.key() in view_modification_keys:
self.main_window.modify_comic_view(event.key())
def record_position(self):
self.parent.metadata['position']['is_read'] = False
self.common_functions.update_model()
def mouseMoveEvent(self, event):
if QtWidgets.QApplication.mouseButtons() == QtCore.Qt.NoButton:
self.viewport().setCursor(QtCore.Qt.OpenHandCursor)
else:
self.viewport().setCursor(QtCore.Qt.ClosedHandCursor)
self.parent.mouse_hide_timer.start(2000)
QtWidgets.QGraphicsView.mouseMoveEvent(self, event)
def generate_graphicsview_context_menu(self, position):
contextMenu = QtWidgets.QMenu()
fsToggleAction = dfToggleAction = 'Caesar si viveret, ad remum dareris'
if self.parent.is_fullscreen:
fsToggleAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('view-fullscreen'),
self._translate('PliantQGraphicsView', 'Exit fullscreen'))
elif not self.main_window.settings['show_bars']:
distraction_free_prompt = self._translate(
'PliantQGraphicsView', 'Exit Distraction Free mode')
dfToggleAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('visibility'),
distraction_free_prompt)
saveAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('filesaveas'),
self._translate('PliantQGraphicsView', 'Save page as...'))
view_submenu_string = self._translate('PliantQGraphicsView', 'View')
viewSubMenu = contextMenu.addMenu(view_submenu_string)
viewSubMenu.setIcon(
self.main_window.QImageFactory.get_image('mail-thread-watch'))
doublePageAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('page-double'),
self._translate('PliantQGraphicsView', 'Double page mode (D)'))
doublePageAction.setCheckable(True)
doublePageAction.setChecked(
self.main_window.bookToolBar.doublePageButton.isChecked())
mangaModeAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('manga-mode'),
self._translate('PliantQGraphicsView', 'Manga mode (M)'))
mangaModeAction.setCheckable(True)
mangaModeAction.setChecked(
self.main_window.bookToolBar.mangaModeButton.isChecked())
viewSubMenu.addSeparator()
zoominAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-in'),
self._translate('PliantQGraphicsView', 'Zoom in (+)'))
zoomoutAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-out'),
self._translate('PliantQGraphicsView', 'Zoom out (-)'))
fitWidthAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-fit-width'),
self._translate('PliantQGraphicsView', 'Fit width (W)'))
bestFitAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-fit-best'),
self._translate('PliantQGraphicsView', 'Best fit (B)'))
originalSizeAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-original'),
self._translate('PliantQGraphicsView', 'Original size (O)'))
bookmarksToggleAction = 'Latin quote 2. Electric Boogaloo.'
if not self.main_window.settings[
'show_bars'] or self.parent.is_fullscreen:
bookmarksToggleAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('bookmarks'),
self._translate('PliantQGraphicsView', 'Bookmarks'))
self.common_functions.generate_combo_box_action(contextMenu)
action = contextMenu.exec_(self.sender().mapToGlobal(position))
if action == doublePageAction:
self.main_window.bookToolBar.doublePageButton.trigger()
if action == mangaModeAction:
self.main_window.bookToolBar.mangaModeButton.trigger()
if action == saveAction:
dialog_prompt = self._translate('Main_UI', 'Save page as...')
extension_string = self._translate('Main_UI', 'Images')
save_file = QtWidgets.QFileDialog.getSaveFileName(
self, dialog_prompt,
self.main_window.settings['last_open_path'],
f'{extension_string} (*.png *.jpg *.bmp)')
if save_file:
self.image_pixmap.save(save_file[0])
if action == bookmarksToggleAction:
self.parent.toggle_side_dock(1)
if action == dfToggleAction:
self.main_window.toggle_distraction_free()
if action == fsToggleAction:
self.parent.exit_fullscreen()
view_action_dict = {
zoominAction: QtCore.Qt.Key_Plus,
zoomoutAction: QtCore.Qt.Key_Minus,
fitWidthAction: QtCore.Qt.Key_W,
bestFitAction: QtCore.Qt.Key_B,
originalSizeAction: QtCore.Qt.Key_O
}
if action in view_action_dict:
self.main_window.modify_comic_view(view_action_dict[action])
def closeEvent(self, *args):
# In case the program is closed when a contentView is fullscreened
self.main_window.closeEvent()
def toggle_annotation_mode(self):
# The graphics view doesn't currently have annotation functionality
# Don't delete this because it's still called
pass
class PliantQGraphicsView(QtWidgets.QGraphicsView):
def __init__(self, filepath, main_window, parent=None):
super(PliantQGraphicsView, self).__init__(parent)
self._translate = QtCore.QCoreApplication.translate
self.parent = parent
self.main_window = main_window
self.qimage = None # Will be needed to resize pdf
self.image_pixmap = None
self.image_cache = [None for _ in range(4)]
self.thread = None
self.filepath = filepath
self.filetype = os.path.splitext(self.filepath)[1][1:]
if self.filetype == 'cbz':
self.book = zipfile.ZipFile(self.filepath)
elif self.filetype == 'cbr':
self.book = rarfile.RarFile(self.filepath)
elif self.filetype == 'pdf':
self.book = popplerqt5.Poppler.Document.load(self.filepath)
self.book.setRenderHint(
popplerqt5.Poppler.Document.Antialiasing
and popplerqt5.Poppler.Document.TextAntialiasing)
self.common_functions = PliantWidgetsCommonFunctions(
self, self.main_window)
# TODO
# Image panning with mouse
self.ignore_wheel_event = False
self.ignore_wheel_event_number = 0
self.setMouseTracking(True)
self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag)
self.viewport().setCursor(QtCore.Qt.ArrowCursor)
self.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
self.customContextMenuRequested.connect(
self.generate_graphicsview_context_menu)
def loadImage(self, current_page):
# TODO
# For double page view: 1 before, 1 after
all_pages = [i[1] for i in self.parent.metadata['content']]
def load_page(current_page):
image_pixmap = QtGui.QPixmap()
if self.filetype in ('cbz', 'cbr'):
page_data = self.book.read(current_page)
image_pixmap.loadFromData(page_data)
elif self.filetype == 'pdf':
page_data = self.book.page(current_page)
page_qimage = page_data.renderToImage(350, 350)
image_pixmap.convertFromImage(page_qimage)
return image_pixmap
def generate_image_cache(current_page):
print('Building image cache')
current_page_index = all_pages.index(current_page)
for i in (-1, 0, 1, 2):
try:
this_page = all_pages[current_page_index + i]
this_pixmap = load_page(this_page)
self.image_cache[i + 1] = (this_page, this_pixmap)
except IndexError:
self.image_cache[i + 1] = None
def refill_cache(remove_value):
# Do NOT put a parent in here or the mother of all
# memory leaks will result
self.thread = BackGroundCacheRefill(self.image_cache, remove_value,
self.filetype, self.book,
all_pages)
self.thread.finished.connect(overwrite_cache)
self.thread.start()
def overwrite_cache():
self.image_cache = self.thread.image_cache
def check_cache(current_page):
for i in self.image_cache:
if i:
if i[0] == current_page:
return_pixmap = i[1]
refill_cache(i)
return return_pixmap
# No return happened so the image isn't in the cache
generate_image_cache(current_page)
if self.main_window.settings['caching_enabled']:
return_pixmap = None
while not return_pixmap:
return_pixmap = check_cache(current_page)
else:
return_pixmap = load_page(current_page)
self.image_pixmap = return_pixmap
self.resizeEvent()
def resizeEvent(self, *args):
if not self.image_pixmap:
return
zoom_mode = self.main_window.comic_profile['zoom_mode']
padding = self.main_window.comic_profile['padding']
if zoom_mode == 'fitWidth':
available_width = self.viewport().width()
image_pixmap = self.image_pixmap.scaledToWidth(
available_width, QtCore.Qt.SmoothTransformation)
elif zoom_mode == 'originalSize':
image_pixmap = self.image_pixmap
new_padding = (self.viewport().width() - image_pixmap.width()) // 2
if new_padding < 0: # The image is larger than the viewport
self.main_window.comic_profile['padding'] = 0
else:
self.main_window.comic_profile['padding'] = new_padding
elif zoom_mode == 'bestFit':
available_width = self.viewport().width()
available_height = self.viewport().height()
image_pixmap = self.image_pixmap.scaled(
available_width, available_height, QtCore.Qt.KeepAspectRatio,
QtCore.Qt.SmoothTransformation)
self.main_window.comic_profile['padding'] = (
self.viewport().width() - image_pixmap.width()) // 2
elif zoom_mode == 'manualZoom':
available_width = self.viewport().width() - 2 * padding
image_pixmap = self.image_pixmap.scaledToWidth(
available_width, QtCore.Qt.SmoothTransformation)
graphics_scene = QtWidgets.QGraphicsScene()
graphics_scene.addPixmap(image_pixmap)
self.setScene(graphics_scene)
self.show()
def wheelEvent(self, event):
self.common_functions.wheelEvent(event, True)
def keyPressEvent(self, event):
vertical = self.verticalScrollBar().value()
maximum = self.verticalScrollBar().maximum()
def scroller(increment, move_forward=True):
if move_forward:
if vertical == maximum:
self.common_functions.change_chapter(1, True)
else:
next_val = vertical + increment
if next_val >= .95 * maximum:
next_val = maximum
self.verticalScrollBar().setValue(next_val)
else:
if vertical == 0:
self.common_functions.change_chapter(-1, False)
else:
next_val = vertical - increment
if next_val <= .05 * maximum:
next_val = 0
self.verticalScrollBar().setValue(next_val)
small_increment = maximum // 4
big_increment = maximum // 2
if event.key() == QtCore.Qt.Key_Up:
scroller(small_increment, False)
if event.key() == QtCore.Qt.Key_Down:
scroller(small_increment)
if event.key() == QtCore.Qt.Key_Space:
scroller(big_increment)
view_modification_keys = (QtCore.Qt.Key_Plus, QtCore.Qt.Key_Minus,
QtCore.Qt.Key_Equal, QtCore.Qt.Key_B,
QtCore.Qt.Key_W, QtCore.Qt.Key_O)
if event.key() in view_modification_keys:
self.main_window.modify_comic_view(event.key())
def mouseMoveEvent(self, *args):
self.viewport().setCursor(QtCore.Qt.ArrowCursor)
self.parent.mouse_hide_timer.start(3000)
def generate_graphicsview_context_menu(self, position):
contextMenu = QtWidgets.QMenu()
saveAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('filesaveas'),
self._translate('PliantQGraphicsView', 'Save page as...'))
toggleAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('visibility'),
self._translate('PliantQGraphicsView',
'Toggle distraction free mode'))
viewSubMenu = contextMenu.addMenu('View')
viewSubMenu.setIcon(
self.main_window.QImageFactory.get_image('mail-thread-watch'))
zoominAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-in'),
self._translate('PliantQGraphicsView', 'Zoom in (+)'))
zoomoutAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-out'),
self._translate('PliantQGraphicsView', 'Zoom out (-)'))
fitWidthAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-fit-width'),
self._translate('PliantQGraphicsView', 'Fit width (W)'))
bestFitAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-fit-best'),
self._translate('PliantQGraphicsView', 'Best fit (B)'))
originalSizeAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-original'),
self._translate('PliantQGraphicsView', 'Original size (O)'))
if not self.main_window.settings['show_bars']:
self.common_functions.generate_combo_box_action(contextMenu)
action = contextMenu.exec_(self.sender().mapToGlobal(position))
if action == saveAction:
dialog_prompt = self._translate('Main_UI', 'Save page as...')
extension_string = self._translate('Main_UI', 'Images')
save_file = QtWidgets.QFileDialog.getSaveFileName(
self, dialog_prompt,
self.main_window.settings['last_open_path'],
f'{extension_string} (*.png *.jpg *.bmp)')
if save_file:
self.image_pixmap.save(save_file[0])
if action == toggleAction:
self.main_window.toggle_distraction_free()
view_action_dict = {
zoominAction: QtCore.Qt.Key_Plus,
zoomoutAction: QtCore.Qt.Key_Minus,
fitWidthAction: QtCore.Qt.Key_W,
bestFitAction: QtCore.Qt.Key_B,
originalSizeAction: QtCore.Qt.Key_O
}
if action in view_action_dict:
self.main_window.modify_comic_view(view_action_dict[action])
def closeEvent(self, *args):
# In case the program is closed when a contentView is fullscreened
self.main_window.closeEvent()
class PliantQGraphicsView(QtWidgets.QGraphicsView):
def __init__(self, filepath, main_window, parent=None):
super(PliantQGraphicsView, self).__init__(parent)
self._translate = QtCore.QCoreApplication.translate
self.parent = parent
self.main_window = main_window
self.image_pixmap = None
self.image_cache = [None for _ in range(4)]
self.thread = None
self.annotation_dict = self.parent.metadata['annotations']
self.filepath = filepath
self.filetype = os.path.splitext(self.filepath)[1][1:]
if self.filetype == 'cbz':
self.book = zipfile.ZipFile(self.filepath)
elif self.filetype == 'cbr':
self.book = rarfile.RarFile(self.filepath)
elif self.filetype == 'pdf':
self.book = fitz.open(self.filepath)
self.common_functions = PliantWidgetsCommonFunctions(
self, self.main_window)
self.ignore_wheel_event = False
self.ignore_wheel_event_number = 0
self.setMouseTracking(True)
self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag)
self.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
self.customContextMenuRequested.connect(
self.generate_graphicsview_context_menu)
def loadImage(self, current_page):
all_pages = self.parent.metadata['content']
current_page_index = all_pages.index(current_page)
double_page_mode = False
if (self.main_window.settings['double_page_mode']
and (current_page_index not in (0, len(all_pages) - 1))):
double_page_mode = True
def load_page(current_page):
def page_loader(page):
pixmap = QtGui.QPixmap()
if self.filetype in ('cbz', 'cbr'):
page_data = self.book.read(page)
pixmap.loadFromData(page_data)
elif self.filetype == 'pdf':
page_data = self.book.loadPage(page)
pixmap = render_pdf_page(page_data)
return pixmap
firstPixmap = page_loader(current_page)
if not double_page_mode:
return firstPixmap
next_page = all_pages[current_page_index + 1]
secondPixmap = page_loader(next_page)
# Pixmap height should be the greater of the 2 images
pixmap_height = firstPixmap.height()
if secondPixmap.height() > pixmap_height:
pixmap_height = secondPixmap.height()
bigPixmap = QtGui.QPixmap(
firstPixmap.width() + secondPixmap.width() + 5,
pixmap_height)
bigPixmap.fill(QtCore.Qt.transparent)
imagePainter = QtGui.QPainter(bigPixmap)
manga_mode = self.main_window.settings['manga_mode']
if manga_mode:
imagePainter.drawPixmap(0, 0, secondPixmap)
imagePainter.drawPixmap(secondPixmap.width() + 4, 0, firstPixmap)
else:
imagePainter.drawPixmap(0, 0, firstPixmap)
imagePainter.drawPixmap(firstPixmap.width() + 4, 0, secondPixmap)
imagePainter.end()
return bigPixmap
def generate_image_cache(current_page):
logger.info('(Re)building image cache')
current_page_index = all_pages.index(current_page)
# Image caching for single and double page views
page_indices = (-1, 0, 1, 2)
index_modifier = 0
if double_page_mode:
index_modifier = 1
for i in page_indices:
try:
this_page = all_pages[current_page_index + i + index_modifier]
this_pixmap = load_page(this_page)
self.image_cache[i + 1] = (this_page, this_pixmap)
except IndexError:
self.image_cache[i + 1] = None
def refill_cache(remove_value):
# Do NOT put a parent in here or the mother of all
# memory leaks will result
self.thread = BackGroundCacheRefill(
self.image_cache, remove_value,
self.filetype, self.book, all_pages)
self.thread.finished.connect(overwrite_cache)
self.thread.start()
def overwrite_cache():
self.image_cache = self.thread.image_cache
def check_cache(current_page):
for i in self.image_cache:
if i:
if i[0] == current_page:
return_pixmap = i[1]
refill_cache(i)
return return_pixmap
# No return happened so the image isn't in the cache
generate_image_cache(current_page)
# TODO
# Get caching working for double page view
if not double_page_mode and self.main_window.settings['caching_enabled']:
return_pixmap = None
while not return_pixmap:
return_pixmap = check_cache(current_page)
else:
return_pixmap = load_page(current_page)
if self.main_window.settings['invert_colors']:
qImg = return_pixmap.toImage()
qImg.invertPixels()
if qImg: # Will return None if conversion doesn't work
return_pixmap = QtGui.QPixmap().fromImage(qImg)
else:
logger.error('Color inversion failed: ' + current_page)
self.image_pixmap = return_pixmap
self.resizeEvent()
def resizeEvent(self, *args):
if not self.image_pixmap:
return
zoom_mode = self.main_window.comic_profile['zoom_mode']
padding = self.main_window.comic_profile['padding']
if zoom_mode == 'fitWidth':
available_width = self.viewport().width()
image_pixmap = self.image_pixmap.scaledToWidth(
available_width, QtCore.Qt.SmoothTransformation)
elif zoom_mode == 'originalSize':
image_pixmap = self.image_pixmap
new_padding = (self.viewport().width() - image_pixmap.width()) // 2
if new_padding < 0: # The image is larger than the viewport
self.main_window.comic_profile['padding'] = 0
else:
self.main_window.comic_profile['padding'] = new_padding
elif zoom_mode == 'bestFit':
available_width = self.viewport().width()
available_height = self.viewport().height()
image_pixmap = self.image_pixmap.scaled(
available_width, available_height,
QtCore.Qt.KeepAspectRatio, QtCore.Qt.SmoothTransformation)
self.main_window.comic_profile['padding'] = (
self.viewport().width() - image_pixmap.width()) // 2
elif zoom_mode == 'manualZoom':
available_width = self.viewport().width() - 2 * padding
image_pixmap = self.image_pixmap.scaledToWidth(
available_width, QtCore.Qt.SmoothTransformation)
graphicsScene = QtWidgets.QGraphicsScene()
graphicsScene.addPixmap(image_pixmap)
self.setScene(graphicsScene)
self.show()
# This prevents a partial page scroll on first load
self.verticalScrollBar().setValue(0)
def wheelEvent(self, event):
self.common_functions.wheelEvent(event)
def keyPressEvent(self, event):
vertical = self.verticalScrollBar().value()
maximum = self.verticalScrollBar().maximum()
def scroller(increment, move_forward=True):
if move_forward:
if vertical == maximum:
self.common_functions.change_chapter(1, True)
else:
next_val = vertical + increment
if next_val >= .95 * maximum:
next_val = maximum
self.verticalScrollBar().setValue(next_val)
else:
if vertical == 0:
self.common_functions.change_chapter(-1, False)
else:
next_val = vertical - increment
if next_val <= .05 * maximum:
next_val = 0
self.verticalScrollBar().setValue(next_val)
small_increment = maximum //self.main_window.settings['small_increment']
big_increment = maximum // self.main_window.settings['large_increment']
# Scrolling
if event.key() == QtCore.Qt.Key_Up:
scroller(small_increment, False)
if event.key() == QtCore.Qt.Key_Down:
scroller(small_increment)
if event.key() == QtCore.Qt.Key_Space:
scroller(big_increment)
# Double page mode and manga mode
if event.key() in (QtCore.Qt.Key_D, QtCore.Qt.Key_M):
self.main_window.change_page_view(event.key())
# Image fit modes
view_modification_keys = (
QtCore.Qt.Key_Plus, QtCore.Qt.Key_Minus, QtCore.Qt.Key_Equal,
QtCore.Qt.Key_B, QtCore.Qt.Key_W, QtCore.Qt.Key_O)
if event.key() in view_modification_keys:
self.main_window.modify_comic_view(event.key())
def record_position(self):
self.parent.metadata['position']['is_read'] = False
self.common_functions.update_model()
def mouseMoveEvent(self, event):
if QtWidgets.QApplication.mouseButtons() == QtCore.Qt.NoButton:
self.viewport().setCursor(QtCore.Qt.OpenHandCursor)
else:
self.viewport().setCursor(QtCore.Qt.ClosedHandCursor)
self.parent.mouse_hide_timer.start(2000)
QtWidgets.QGraphicsView.mouseMoveEvent(self, event)
def generate_graphicsview_context_menu(self, position):
contextMenu = QtWidgets.QMenu()
fsToggleAction = dfToggleAction = 'Caesar si viveret, ad remum dareris'
if self.parent.is_fullscreen:
fsToggleAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('view-fullscreen'),
self._translate('PliantQGraphicsView', 'Exit fullscreen'))
elif not self.main_window.settings['show_bars']:
distraction_free_prompt = self._translate(
'PliantQGraphicsView', 'Exit Distraction Free mode')
dfToggleAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('visibility'),
distraction_free_prompt)
saveAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('filesaveas'),
self._translate('PliantQGraphicsView', 'Save page as...'))
view_submenu_string = self._translate('PliantQGraphicsView', 'View')
viewSubMenu = contextMenu.addMenu(view_submenu_string)
viewSubMenu.setIcon(
self.main_window.QImageFactory.get_image('mail-thread-watch'))
doublePageAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('page-double'),
self._translate('PliantQGraphicsView', 'Double page mode (D)'))
doublePageAction.setCheckable(True)
doublePageAction.setChecked(
self.main_window.bookToolBar.doublePageButton.isChecked())
mangaModeAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('manga-mode'),
self._translate('PliantQGraphicsView', 'Manga mode (M)'))
mangaModeAction.setCheckable(True)
mangaModeAction.setChecked(
self.main_window.bookToolBar.mangaModeButton.isChecked())
viewSubMenu.addSeparator()
zoominAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-in'),
self._translate('PliantQGraphicsView', 'Zoom in (+)'))
zoomoutAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-out'),
self._translate('PliantQGraphicsView', 'Zoom out (-)'))
fitWidthAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-fit-width'),
self._translate('PliantQGraphicsView', 'Fit width (W)'))
bestFitAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-fit-best'),
self._translate('PliantQGraphicsView', 'Best fit (B)'))
originalSizeAction = viewSubMenu.addAction(
self.main_window.QImageFactory.get_image('zoom-original'),
self._translate('PliantQGraphicsView', 'Original size (O)'))
bookmarksToggleAction = 'Latin quote 2. Electric Boogaloo.'
if not self.main_window.settings['show_bars'] or self.parent.is_fullscreen:
bookmarksToggleAction = contextMenu.addAction(
self.main_window.QImageFactory.get_image('bookmarks'),
self._translate('PliantQGraphicsView', 'Bookmarks'))
self.common_functions.generate_combo_box_action(contextMenu)
action = contextMenu.exec_(self.sender().mapToGlobal(position))
if action == doublePageAction:
self.main_window.bookToolBar.doublePageButton.trigger()
if action == mangaModeAction:
self.main_window.bookToolBar.mangaModeButton.trigger()
if action == saveAction:
dialog_prompt = self._translate('Main_UI', 'Save page as...')
extension_string = self._translate('Main_UI', 'Images')
save_file = QtWidgets.QFileDialog.getSaveFileName(
self, dialog_prompt, self.main_window.settings['last_open_path'],
f'{extension_string} (*.png *.jpg *.bmp)')
if save_file:
self.image_pixmap.save(save_file[0])
if action == bookmarksToggleAction:
self.parent.toggle_side_dock(1)
if action == dfToggleAction:
self.main_window.toggle_distraction_free()
if action == fsToggleAction:
self.parent.exit_fullscreen()
view_action_dict = {
zoominAction: QtCore.Qt.Key_Plus,
zoomoutAction: QtCore.Qt.Key_Minus,
fitWidthAction: QtCore.Qt.Key_W,
bestFitAction: QtCore.Qt.Key_B,
originalSizeAction: QtCore.Qt.Key_O}
if action in view_action_dict:
self.main_window.modify_comic_view(view_action_dict[action])
def closeEvent(self, *args):
# In case the program is closed when a contentView is fullscreened
self.main_window.closeEvent()
def toggle_annotation_mode(self):
# The graphics view doesn't currently have annotation functionality
# Don't delete this because it's still called
pass
class PliantQGraphicsView(QtWidgets.QGraphicsView):
def __init__(self, filepath, main_window, parent=None):
super(PliantQGraphicsView, self).__init__(parent)
self.main_window = main_window
self.parent = parent
self.qimage = None # Will be needed to resize pdf
self.image_pixmap = None
self.image_cache = [None for _ in range(4)]
self.thread = None
self.filepath = filepath
self.filetype = os.path.splitext(self.filepath)[1][1:]
if self.filetype == 'cbz':
self.book = zipfile.ZipFile(self.filepath)
elif self.filetype == 'cbr':
self.book = rarfile.RarFile(self.filepath)
elif self.filetype == 'pdf':
self.book = popplerqt5.Poppler.Document.load(self.filepath)
self.book.setRenderHint(
popplerqt5.Poppler.Document.Antialiasing
and popplerqt5.Poppler.Document.TextAntialiasing)
self.common_functions = PliantWidgetsCommonFunctions(
self, self.main_window)
# TODO
# Image panning with mouse
self.ignore_wheel_event = False
self.ignore_wheel_event_number = 0
self.setMouseTracking(True)
self.setDragMode(QtWidgets.QGraphicsView.ScrollHandDrag)
self.viewport().setCursor(QtCore.Qt.ArrowCursor)
def loadImage(self, current_page):
# TODO
# Threaded caching will still work here
# Look at a commit where it's not been deleted
# For double page view: 1 before, 1 after
all_pages = [i[1] for i in self.parent.metadata['content']]
def load_page(current_page):
image_pixmap = QtGui.QPixmap()
if self.filetype in ('cbz', 'cbr'):
page_data = self.book.read(current_page)
image_pixmap.loadFromData(page_data)
elif self.filetype == 'pdf':
page_data = self.book.page(current_page)
page_qimage = page_data.renderToImage(350, 350)
image_pixmap.convertFromImage(page_qimage)
return image_pixmap
def generate_image_cache(current_page):
print('Building image cache')
current_page_index = all_pages.index(current_page)
for i in (-1, 0, 1, 2):
try:
this_page = all_pages[current_page_index + i]
this_pixmap = load_page(this_page)
self.image_cache[i + 1] = (this_page, this_pixmap)
except IndexError:
self.image_cache[i + 1] = None
def refill_cache(remove_value):
# Do NOT put a parent in here or the mother of all
# memory leaks will result
self.thread = BackGroundCacheRefill(self.image_cache, remove_value,
self.filetype, self.book,
all_pages)
self.thread.finished.connect(overwrite_cache)
self.thread.start()
def overwrite_cache():
self.image_cache = self.thread.image_cache
def check_cache(current_page):
for i in self.image_cache:
if i:
if i[0] == current_page:
return_pixmap = i[1]
refill_cache(i)
return return_pixmap
# No return happened so the image isn't in the cache
generate_image_cache(current_page)
return_pixmap = None
while not return_pixmap:
return_pixmap = check_cache(current_page)
self.image_pixmap = return_pixmap
self.resizeEvent()
def resizeEvent(self, *args):
if not self.image_pixmap:
return
zoom_mode = self.main_window.comic_profile['zoom_mode']
padding = self.main_window.comic_profile['padding']
if zoom_mode == 'fitWidth':
available_width = self.viewport().width()
image_pixmap = self.image_pixmap.scaledToWidth(
available_width, QtCore.Qt.SmoothTransformation)
elif zoom_mode == 'originalSize':
image_pixmap = self.image_pixmap
new_padding = (self.viewport().width() - image_pixmap.width()) // 2
if new_padding < 0: # The image is larger than the viewport
self.main_window.comic_profile['padding'] = 0
else:
self.main_window.comic_profile['padding'] = new_padding
elif zoom_mode == 'bestFit':
available_width = self.viewport().width()
available_height = self.viewport().height()
image_pixmap = self.image_pixmap.scaled(
available_width, available_height, QtCore.Qt.KeepAspectRatio,
QtCore.Qt.SmoothTransformation)
self.main_window.comic_profile['padding'] = (
self.viewport().width() - image_pixmap.width()) // 2
elif zoom_mode == 'manualZoom':
available_width = self.viewport().width() - 2 * padding
image_pixmap = self.image_pixmap.scaledToWidth(
available_width, QtCore.Qt.SmoothTransformation)
graphics_scene = QtWidgets.QGraphicsScene()
graphics_scene.addPixmap(image_pixmap)
self.setScene(graphics_scene)
self.show()
def wheelEvent(self, event):
self.common_functions.wheelEvent(event, True)
def keyPressEvent(self, event):
# This function is sufficiently different to warrant
# exclusion from the common functions class
if event.key() == 32: # Spacebar press
vertical = self.verticalScrollBar().value()
maximum = self.verticalScrollBar().maximum()
if vertical == maximum:
self.common_functions.change_chapter(1, True)
else:
# Increment by following value
scroll_increment = int((maximum - 0) / 2)
self.verticalScrollBar().setValue(vertical + scroll_increment)
def mouseMoveEvent(self, *args):
self.viewport().setCursor(QtCore.Qt.ArrowCursor)
self.parent.mouse_hide_timer.start(3000)
def closeEvent(self, *args):
# In case the program is closed when a contentView is fullscreened
self.main_window.closeEvent()
