def parsed(self):
if not self.renderer.aborted and self.renderer.lrf is not None:
width, height = self.renderer.lrf.device_info.width, self.renderer.lrf.device_info.height
hdelta = self.tool_bar.height() + 3
s = QScrollBar(self)
scrollbar_adjust = min(s.width(), s.height())
self.graphics_view.resize_for(width + scrollbar_adjust, height + scrollbar_adjust)
desktop = QCoreApplication.instance().desktop()
screen_height = desktop.availableGeometry(self).height() - 25
height = min(screen_height, height + hdelta + scrollbar_adjust)
self.resize(width + scrollbar_adjust, height)
self.setWindowTitle(self.renderer.lrf.metadata.title + " - " + __appname__)
self.document_title = self.renderer.lrf.metadata.title
if self.opts.profile:
import cProfile
lrf = self.renderer.lrf
cProfile.runctx("self.document.render(lrf)", globals(), locals(), lrf.metadata.title + ".stats")
print "Stats written to", self.renderer.lrf.metadata.title + ".stats"
else:
start = time.time()
self.document.render(self.renderer.lrf)
print "Layout time:", time.time() - start, "seconds"
self.renderer.lrf = None
self.graphics_view.setScene(self.document)
self.graphics_view.show()
self.spin_box.setRange(1, self.document.num_of_pages)
self.slider.setRange(1, self.document.num_of_pages)
self.spin_box.setSuffix(" of %d" % (self.document.num_of_pages,))
self.spin_box.updateGeometry()
self.stack.setCurrentIndex(0)
self.graphics_view.setFocus(Qt.OtherFocusReason)
elif self.renderer.exception is not None:
exception = self.renderer.exception
print >> sys.stderr, "Error rendering document"
print >> sys.stderr, exception
print >> sys.stderr, self.renderer.formatted_traceback
msg = (
u"<p><b>%s</b>: " % (exception.__class__.__name__,)
+ unicode(str(exception), "utf8", "replace")
+ u"</p>"
)
msg += u"<p>Failed to render document</p>"
msg += u"<p>Detailed <b>traceback</b>:<pre>"
msg += self.renderer.formatted_traceback + "</pre>"
d = ConversionErrorDialog(self, "Error while rendering file", msg)
d.exec_()
def __init__(self, parent=None, show_open_in_editor=False):
QWidget.__init__(self, parent)
self.changes = [[], [], []]
self.delta = 0
self.l = l = QHBoxLayout(self)
self.setLayout(l)
self.syncpos = 0
l.setContentsMargins(0, 0, 0, 0), l.setSpacing(0)
self.view = DiffSplit(self, show_open_in_editor=show_open_in_editor)
l.addWidget(self.view)
self.add_diff = self.view.add_diff
self.scrollbar = QScrollBar(self)
l.addWidget(self.scrollbar)
self.syncing = False
self.bars = []
self.resize_timer = QTimer(self)
self.resize_timer.setSingleShot(True)
self.resize_timer.timeout.connect(self.resize_debounced)
for i, bar in enumerate((self.scrollbar, self.view.left.verticalScrollBar(), self.view.right.verticalScrollBar())):
self.bars.append(bar)
bar.valueChanged[int].connect(partial(self.scrolled, i))
self.view.left.resized.connect(self.resized)
for i, v in enumerate((self.view.left, self.view.right, self.view.handle(1))):
v.wheel_event.connect(self.scrollbar.wheelEvent)
if i < 2:
v.next_change.connect(self.next_change)
v.line_activated.connect(self.line_activated)
v.scrolled.connect(partial(self.scrolled, i + 1))
def __init__(self, parent=None, show_open_in_editor=False):
QWidget.__init__(self, parent)
self.changes = [[], [], []]
self.delta = 0
self.l = l = QHBoxLayout(self)
self.setLayout(l)
self.syncpos = 0
l.setContentsMargins(0, 0, 0, 0), l.setSpacing(0)
self.view = DiffSplit(self, show_open_in_editor=show_open_in_editor)
l.addWidget(self.view)
self.add_diff = self.view.add_diff
self.scrollbar = QScrollBar(self)
l.addWidget(self.scrollbar)
self.syncing = False
self.bars = []
self.resize_timer = QTimer(self)
self.resize_timer.setSingleShot(True)
self.resize_timer.timeout.connect(self.resize_debounced)
for bar in (self.scrollbar, self.view.left.verticalScrollBar(), self.view.right.verticalScrollBar()):
self.bars.append(bar)
bar.scroll_idx = len(self.bars) - 1
connect_lambda(bar.valueChanged[int], self, lambda self: self.scrolled(self.sender().scroll_idx))
self.view.left.resized.connect(self.resized)
for v in (self.view.left, self.view.right, self.view.handle(1)):
v.wheel_event.connect(self.scrollbar.wheelEvent)
if v is self.view.left or v is self.view.right:
v.next_change.connect(self.next_change)
v.line_activated.connect(self.line_activated)
connect_lambda(v.scrolled, self,
lambda self: self.scrolled(1 if self.sender() is self.view.left else 2))
def parsed(self):
if not self.renderer.aborted and self.renderer.lrf is not None:
width, height = self.renderer.lrf.device_info.width, \
self.renderer.lrf.device_info.height
hdelta = self.tool_bar.height()+3
s = QScrollBar(self)
scrollbar_adjust = min(s.width(), s.height())
self.graphics_view.resize_for(width+scrollbar_adjust, height+scrollbar_adjust)
desktop = QCoreApplication.instance().desktop()
screen_height = desktop.availableGeometry(self).height() - 25
height = min(screen_height, height+hdelta+scrollbar_adjust)
self.resize(width+scrollbar_adjust, height)
self.setWindowTitle(self.renderer.lrf.metadata.title + ' - ' + __appname__)
self.document_title = self.renderer.lrf.metadata.title
if self.opts.profile:
import cProfile
lrf = self.renderer.lrf
cProfile.runctx('self.document.render(lrf)', globals(), locals(), lrf.metadata.title+'.stats')
print('Stats written to', self.renderer.lrf.metadata.title+'.stats')
else:
start = time.time()
self.document.render(self.renderer.lrf)
print('Layout time:', time.time()-start, 'seconds')
self.renderer.lrf = None
self.graphics_view.setScene(self.document)
self.graphics_view.show()
self.spin_box.setRange(1, self.document.num_of_pages)
self.slider.setRange(1, self.document.num_of_pages)
self.spin_box.setSuffix(' of %d'%(self.document.num_of_pages,))
self.spin_box.updateGeometry()
self.stack.setCurrentIndex(0)
self.graphics_view.setFocus(Qt.OtherFocusReason)
elif self.renderer.exception is not None:
exception = self.renderer.exception
print('Error rendering document', file=sys.stderr)
print(exception, file=sys.stderr)
print(self.renderer.formatted_traceback, file=sys.stderr)
msg = u'<p><b>%s</b>: '%(exception.__class__.__name__,) + as_unicode(exception) + u'</p>'
msg += u'<p>Failed to render document</p>'
msg += u'<p>Detailed <b>traceback</b>:<pre>'
msg += self.renderer.formatted_traceback + '</pre>'
d = ConversionErrorDialog(self, 'Error while rendering file', msg)
d.exec_()
class DiffView(QWidget): # {{{
SYNC_POSITION = 0.4
line_activated = pyqtSignal(object, object, object)
def __init__(self, parent=None, show_open_in_editor=False):
QWidget.__init__(self, parent)
self.changes = [[], [], []]
self.delta = 0
self.l = l = QHBoxLayout(self)
self.setLayout(l)
self.syncpos = 0
l.setContentsMargins(0, 0, 0, 0), l.setSpacing(0)
self.view = DiffSplit(self, show_open_in_editor=show_open_in_editor)
l.addWidget(self.view)
self.add_diff = self.view.add_diff
self.scrollbar = QScrollBar(self)
l.addWidget(self.scrollbar)
self.syncing = False
self.bars = []
self.resize_timer = QTimer(self)
self.resize_timer.setSingleShot(True)
self.resize_timer.timeout.connect(self.resize_debounced)
for i, bar in enumerate((self.scrollbar, self.view.left.verticalScrollBar(), self.view.right.verticalScrollBar())):
self.bars.append(bar)
bar.valueChanged[int].connect(partial(self.scrolled, i))
self.view.left.resized.connect(self.resized)
for i, v in enumerate((self.view.left, self.view.right, self.view.handle(1))):
v.wheel_event.connect(self.scrollbar.wheelEvent)
if i < 2:
v.next_change.connect(self.next_change)
v.line_activated.connect(self.line_activated)
v.scrolled.connect(partial(self.scrolled, i + 1))
def next_change(self, delta):
assert delta in (1, -1)
position = self.get_position_from_scrollbar(0)
if position[0] == 'in':
p = n = position[1]
else:
p, n = position[1], position[1] + 1
if p < 0:
p = None
if n >= len(self.changes[0]):
n = None
if p == n:
nc = p + delta
if nc < 0 or nc >= len(self.changes[0]):
nc = None
else:
nc = {1:n, -1:p}[delta]
if nc is None:
self.scrollbar.setValue(0 if delta == -1 else self.scrollbar.maximum())
else:
val = self.scrollbar.value()
self.scroll_to(0, ('in', nc, 0))
nval = self.scrollbar.value()
if nval == val:
nval += 5 * delta
if 0 <= nval <= self.scrollbar.maximum():
self.scrollbar.setValue(nval)
def resized(self):
self.resize_timer.start(300)
def resize_debounced(self):
self.view.resized()
self.calculate_length()
self.adjust_range()
self.view.handle(1).update()
def get_position_from_scrollbar(self, which):
changes = self.changes[which]
bar = self.bars[which]
syncpos = self.syncpos + bar.value()
prev = 0
for i, (top, bot, kind) in enumerate(changes):
if syncpos <= bot:
if top <= syncpos:
# syncpos is inside a change
try:
ratio = float(syncpos - top) / (bot - top)
except ZeroDivisionError:
ratio = 0
return 'in', i, ratio
else:
# syncpos is after the previous change
offset = syncpos - prev
return 'after', i - 1, offset
else:
# syncpos is after the current change
prev = bot
offset = syncpos - prev
return 'after', len(changes) - 1, offset
def scroll_to(self, which, position):
changes = self.changes[which]
bar = self.bars[which]
val = None
if position[0] == 'in':
change_idx, ratio = position[1:]
start, end = changes[change_idx][:2]
val = start + int((end - start) * ratio)
else:
change_idx, offset = position[1:]
start = 0 if change_idx < 0 else changes[change_idx][1]
val = start + offset
bar.setValue(val - self.syncpos)
def scrolled(self, which, *args):
if self.syncing:
return
position = self.get_position_from_scrollbar(which)
with self:
for x in {0, 1, 2} - {which}:
self.scroll_to(x, position)
self.view.handle(1).update()
def __enter__(self):
self.syncing = True
def __exit__(self, *args):
self.syncing = False
def clear(self):
with self:
self.view.clear()
self.changes = [[], [], []]
self.delta = 0
self.scrollbar.setRange(0, 0)
def adjust_range(self):
ls, rs = self.view.left.verticalScrollBar(), self.view.right.verticalScrollBar()
self.scrollbar.setPageStep(min(ls.pageStep(), rs.pageStep()))
self.scrollbar.setSingleStep(min(ls.singleStep(), rs.singleStep()))
self.scrollbar.setRange(0, ls.maximum() + self.delta)
self.scrollbar.setVisible(self.view.left.blockCount() > ls.pageStep() or self.view.right.blockCount() > rs.pageStep())
self.syncpos = int(ceil(self.scrollbar.pageStep() * self.SYNC_POSITION))
def finalize(self):
self.view.finalize()
self.changes = [[], [], []]
self.calculate_length()
self.adjust_range()
def calculate_length(self):
delta = 0
line_number_changes = ([], [])
for v, lmap, changes in zip((self.view.left, self.view.right), ({}, {}), line_number_changes):
b = v.document().firstBlock()
ebl = v.document().documentLayout().ensureBlockLayout
last_line_count = 0
while b.isValid():
ebl(b)
lmap[b.blockNumber()] = last_line_count
last_line_count += b.layout().lineCount()
b = b.next()
for top, bot, kind in v.changes:
changes.append((lmap[top], lmap[bot], kind))
changes = []
for (l_top, l_bot, kind), (r_top, r_bot, kind) in zip(*line_number_changes):
height = max(l_bot - l_top, r_bot - r_top)
top = delta + l_top
changes.append((top, top + height, kind))
delta = top + height - l_bot
self.changes, self.delta = (changes,) + line_number_changes, delta
def handle_key(self, ev):
amount, d = None, 1
key = ev.key()
if key in (Qt.Key_Up, Qt.Key_Down, Qt.Key_J, Qt.Key_K):
amount = self.scrollbar.singleStep()
if key in (Qt.Key_Up, Qt.Key_K):
d = -1
elif key in (Qt.Key_PageUp, Qt.Key_PageDown):
amount = self.scrollbar.pageStep()
if key in (Qt.Key_PageUp,):
d = -1
elif key in (Qt.Key_Home, Qt.Key_End):
self.scrollbar.setValue(0 if key == Qt.Key_Home else self.scrollbar.maximum())
return True
elif key in (Qt.Key_N, Qt.Key_P):
self.next_change(1 if key == Qt.Key_N else -1)
return True
if amount is not None:
self.scrollbar.setValue(self.scrollbar.value() + d * amount)
return True
return False
def __init__(self, debug_javascript):
MainWindow.__init__(self, None)
self.setWindowTitle(_('E-book viewer'))
self.base_window_title = unicode(self.windowTitle())
self.setObjectName('EbookViewer')
self.setWindowIcon(QIcon(I('viewer.png')))
self.setDockOptions(self.AnimatedDocks | self.AllowTabbedDocks)
self.centralwidget = c = QWidget(self)
c.setObjectName('centralwidget')
self.setCentralWidget(c)
self.central_layout = cl = QGridLayout(c)
cl.setSpacing(0)
c.setLayout(cl), cl.setContentsMargins(0, 0, 0, 0)
self.view = v = DocumentView(self)
v.setMinimumSize(100, 100)
self.view.initialize_view(debug_javascript)
v.setObjectName('view')
cl.addWidget(v)
self.vertical_scrollbar = vs = QScrollBar(c)
vs.setOrientation(Qt.Vertical), vs.setObjectName("vertical_scrollbar")
cl.addWidget(vs, 0, 1, 2, 1)
self.horizontal_scrollbar = hs = QScrollBar(c)
hs.setOrientation(
Qt.Horizontal), hs.setObjectName("horizontal_scrollbar")
cl.addWidget(hs, 1, 0, 1, 1)
self.tool_bar = tb = ToolBar(self)
tb.setObjectName('tool_bar'), tb.setIconSize(QSize(32, 32))
self.addToolBar(Qt.LeftToolBarArea, tb)
self.tool_bar2 = tb2 = QToolBar(self)
tb2.setObjectName('tool_bar2')
self.addToolBar(Qt.TopToolBarArea, tb2)
self.tool_bar.setContextMenuPolicy(Qt.DefaultContextMenu)
self.tool_bar2.setContextMenuPolicy(Qt.PreventContextMenu)
self.pos = DoubleSpinBox()
self.pos.setDecimals(1)
self.pos.setSuffix('/' + _('Unknown') + ' ')
self.pos.setMinimum(1.)
self.tool_bar2.addWidget(self.pos)
self.tool_bar2.addSeparator()
self.reference = Reference()
self.tool_bar2.addWidget(self.reference)
self.tool_bar2.addSeparator()
self.search = SearchBox2(self)
self.search.setMinimumContentsLength(20)
self.search.initialize('viewer_search_history')
self.search.setToolTip(_('Search for text in book'))
self.search.setMinimumWidth(200)
self.tool_bar2.addWidget(self.search)
self.toc_dock = d = QDockWidget(_('Table of Contents'), self)
d.setContextMenuPolicy(Qt.CustomContextMenu)
self.toc_container = w = QWidget(self)
w.l = QVBoxLayout(w)
self.toc = TOCView(w)
self.toc_search = TOCSearch(self.toc, parent=w)
w.l.addWidget(self.toc), w.l.addWidget(
self.toc_search), w.l.setContentsMargins(0, 0, 0, 0)
d.setObjectName('toc-dock')
d.setWidget(w)
d.close() # starts out hidden
self.addDockWidget(Qt.LeftDockWidgetArea, d)
d.setAllowedAreas(Qt.LeftDockWidgetArea | Qt.RightDockWidgetArea)
self.bookmarks_dock = d = QDockWidget(_('Bookmarks'), self)
d.setContextMenuPolicy(Qt.CustomContextMenu)
self.bookmarks = BookmarkManager(self)
d.setObjectName('bookmarks-dock')
d.setWidget(self.bookmarks)
d.close() # starts out hidden
self.addDockWidget(Qt.RightDockWidgetArea, d)
d.setAllowedAreas(Qt.LeftDockWidgetArea | Qt.RightDockWidgetArea)
self.footnotes_dock = d = QDockWidget(_('Footnotes'), self)
d.setContextMenuPolicy(Qt.CustomContextMenu)
self.footnotes_view = FootnotesView(self)
self.footnotes_view.follow_link.connect(self.view.follow_footnote_link)
self.footnotes_view.close_view.connect(d.close)
self.view.footnotes.set_footnotes_view(self.footnotes_view)
d.setObjectName('footnotes-dock')
d.setWidget(self.footnotes_view)
d.close() # starts out hidden
self.addDockWidget(Qt.BottomDockWidgetArea, d)
d.setAllowedAreas(Qt.BottomDockWidgetArea | Qt.TopDockWidgetArea
| Qt.LeftDockWidgetArea | Qt.RightDockWidgetArea)
self.create_actions()
self.themes_menu.aboutToShow.connect(self.themes_menu_shown,
type=Qt.QueuedConnection)
self.metadata = Metadata(self.centralwidget)
self.history = History(self.action_back, self.action_forward)
self.full_screen_label = QLabel(
'''
<center>
<h1>%s</h1>
<h3>%s</h3>
<h3>%s</h3>
<h3>%s</h3>
</center>
''' %
(_('Full screen mode'), _('Right click to show controls'),
_('Tap in the left or right page margin to turn pages'),
_('Press Esc to quit')), self.centralWidget())
self.full_screen_label.setVisible(False)
self.full_screen_label.final_height = 200
self.full_screen_label.setFocusPolicy(Qt.NoFocus)
self.full_screen_label.setStyleSheet('''
QLabel {
text-align: center;
background-color: white;
color: black;
border-width: 1px;
border-style: solid;
border-radius: 20px;
}
''')
self.clock_label = QLabel('99:99', self.centralWidget())
self.clock_label.setVisible(False)
self.clock_label.setFocusPolicy(Qt.NoFocus)
self.info_label_style = '''
QLabel {
text-align: center;
border-width: 1px;
border-style: solid;
border-radius: 8px;
background-color: %s;
color: %s;
font-family: monospace;
font-size: larger;
padding: 5px;
}'''
self.pos_label = QLabel('2000/4000', self.centralWidget())
self.pos_label.setVisible(False)
self.pos_label.setFocusPolicy(Qt.NoFocus)
self.resize(653, 746)
class DiffView(QWidget): # {{{
SYNC_POSITION = 0.4
line_activated = pyqtSignal(object, object, object)
def __init__(self, parent=None, show_open_in_editor=False):
QWidget.__init__(self, parent)
self.changes = [[], [], []]
self.delta = 0
self.l = l = QHBoxLayout(self)
self.setLayout(l)
self.syncpos = 0
l.setContentsMargins(0, 0, 0, 0), l.setSpacing(0)
self.view = DiffSplit(self, show_open_in_editor=show_open_in_editor)
l.addWidget(self.view)
self.add_diff = self.view.add_diff
self.scrollbar = QScrollBar(self)
l.addWidget(self.scrollbar)
self.syncing = False
self.bars = []
self.resize_timer = QTimer(self)
self.resize_timer.setSingleShot(True)
self.resize_timer.timeout.connect(self.resize_debounced)
for bar in (self.scrollbar, self.view.left.verticalScrollBar(), self.view.right.verticalScrollBar()):
self.bars.append(bar)
bar.scroll_idx = len(self.bars) - 1
connect_lambda(bar.valueChanged[int], self, lambda self: self.scrolled(self.sender().scroll_idx))
self.view.left.resized.connect(self.resized)
for v in (self.view.left, self.view.right, self.view.handle(1)):
v.wheel_event.connect(self.scrollbar.wheelEvent)
if v is self.view.left or v is self.view.right:
v.next_change.connect(self.next_change)
v.line_activated.connect(self.line_activated)
connect_lambda(v.scrolled, self,
lambda self: self.scrolled(1 if self.sender() is self.view.left else 2))
def next_change(self, delta):
assert delta in (1, -1)
position = self.get_position_from_scrollbar(0)
if position[0] == 'in':
p = n = position[1]
else:
p, n = position[1], position[1] + 1
if p < 0:
p = None
if n >= len(self.changes[0]):
n = None
if p == n:
nc = p + delta
if nc < 0 or nc >= len(self.changes[0]):
nc = None
else:
nc = {1:n, -1:p}[delta]
if nc is None:
self.scrollbar.setValue(0 if delta == -1 else self.scrollbar.maximum())
else:
val = self.scrollbar.value()
self.scroll_to(0, ('in', nc, 0))
nval = self.scrollbar.value()
if nval == val:
nval += 5 * delta
if 0 <= nval <= self.scrollbar.maximum():
self.scrollbar.setValue(nval)
def resized(self):
self.resize_timer.start(300)
def resize_debounced(self):
self.view.resized()
self.calculate_length()
self.adjust_range()
self.view.handle(1).update()
def get_position_from_scrollbar(self, which):
changes = self.changes[which]
bar = self.bars[which]
syncpos = self.syncpos + bar.value()
prev = 0
for i, (top, bot, kind) in enumerate(changes):
if syncpos <= bot:
if top <= syncpos:
# syncpos is inside a change
try:
ratio = float(syncpos - top) / (bot - top)
except ZeroDivisionError:
ratio = 0
return 'in', i, ratio
else:
# syncpos is after the previous change
offset = syncpos - prev
return 'after', i - 1, offset
else:
# syncpos is after the current change
prev = bot
offset = syncpos - prev
return 'after', len(changes) - 1, offset
def scroll_to(self, which, position):
changes = self.changes[which]
bar = self.bars[which]
val = None
if position[0] == 'in':
change_idx, ratio = position[1:]
start, end = changes[change_idx][:2]
val = start + int((end - start) * ratio)
else:
change_idx, offset = position[1:]
start = 0 if change_idx < 0 else changes[change_idx][1]
val = start + offset
bar.setValue(val - self.syncpos)
def scrolled(self, which, *args):
if self.syncing:
return
position = self.get_position_from_scrollbar(which)
with self:
for x in {0, 1, 2} - {which}:
self.scroll_to(x, position)
self.view.handle(1).update()
def __enter__(self):
self.syncing = True
def __exit__(self, *args):
self.syncing = False
def clear(self):
with self:
self.view.clear()
self.changes = [[], [], []]
self.delta = 0
self.scrollbar.setRange(0, 0)
def adjust_range(self):
ls, rs = self.view.left.verticalScrollBar(), self.view.right.verticalScrollBar()
self.scrollbar.setPageStep(min(ls.pageStep(), rs.pageStep()))
self.scrollbar.setSingleStep(min(ls.singleStep(), rs.singleStep()))
self.scrollbar.setRange(0, ls.maximum() + self.delta)
self.scrollbar.setVisible(self.view.left.document().lineCount() > ls.pageStep() or self.view.right.document().lineCount() > rs.pageStep())
self.syncpos = int(ceil(self.scrollbar.pageStep() * self.SYNC_POSITION))
def finalize(self):
self.view.finalize()
self.changes = [[], [], []]
self.calculate_length()
self.adjust_range()
def calculate_length(self):
delta = 0
line_number_changes = ([], [])
for v, lmap, changes in zip((self.view.left, self.view.right), ({}, {}), line_number_changes):
b = v.document().firstBlock()
ebl = v.document().documentLayout().ensureBlockLayout
last_line_count = 0
while b.isValid():
ebl(b)
lmap[b.blockNumber()] = last_line_count
last_line_count += b.layout().lineCount()
b = b.next()
for top, bot, kind in v.changes:
changes.append((lmap[top], lmap[bot], kind))
changes = []
for (l_top, l_bot, kind), (r_top, r_bot, kind) in zip(*line_number_changes):
height = max(l_bot - l_top, r_bot - r_top)
top = delta + l_top
changes.append((top, top + height, kind))
delta = top + height - l_bot
self.changes, self.delta = (changes,) + line_number_changes, delta
def handle_key(self, ev):
amount, d = None, 1
key = ev.key()
if key in (Qt.Key.Key_Up, Qt.Key.Key_Down, Qt.Key.Key_J, Qt.Key.Key_K):
amount = self.scrollbar.singleStep()
if key in (Qt.Key.Key_Up, Qt.Key.Key_K):
d = -1
elif key in (Qt.Key.Key_PageUp, Qt.Key.Key_PageDown):
amount = self.scrollbar.pageStep()
if key in (Qt.Key.Key_PageUp,):
d = -1
elif key in (Qt.Key.Key_Home, Qt.Key.Key_End):
self.scrollbar.setValue(0 if key == Qt.Key.Key_Home else self.scrollbar.maximum())
return True
elif key in (Qt.Key.Key_N, Qt.Key.Key_P):
self.next_change(1 if key == Qt.Key.Key_N else -1)
return True
if amount is not None:
self.scrollbar.setValue(self.scrollbar.value() + d * amount)
return True
return False
def paintEvent(self, ev):
if self.isEnabled():
return QScrollBar.paintEvent(self, ev)
