def initialize_view(self, debug_javascript=False):
self.setRenderHints(QPainter.Antialiasing|QPainter.TextAntialiasing|QPainter.SmoothPixmapTransform)
self.flipper = SlideFlip(self)
self.is_auto_repeat_event = False
self.debug_javascript = debug_javascript
self.shortcuts = Shortcuts(SHORTCUTS, 'shortcuts/viewer')
self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))
self._size_hint = QSize(510, 680)
self.initial_pos = 0.0
self.to_bottom = False
self.document = Document(self.shortcuts, parent=self,
debug_javascript=debug_javascript)
self.setPage(self.document)
self.inspector = WebInspector(self, self.document)
self.manager = None
self._reference_mode = False
self._ignore_scrollbar_signals = False
self.loading_url = None
self.loadFinished.connect(self.load_finished)
self.connect(self.document, SIGNAL('linkClicked(QUrl)'), self.link_clicked)
self.connect(self.document, SIGNAL('linkHovered(QString,QString,QString)'), self.link_hovered)
self.connect(self.document, SIGNAL('selectionChanged()'), self.selection_changed)
self.connect(self.document, SIGNAL('animated_scroll_done()'),
self.animated_scroll_done, Qt.QueuedConnection)
self.document.page_turn.connect(self.page_turn_requested)
copy_action = self.pageAction(self.document.Copy)
copy_action.setIcon(QIcon(I('convert.png')))
d = self.document
self.unimplemented_actions = list(map(self.pageAction,
[d.DownloadImageToDisk, d.OpenLinkInNewWindow, d.DownloadLinkToDisk,
d.OpenImageInNewWindow, d.OpenLink, d.Reload, d.InspectElement]))
self.search_online_action = QAction(QIcon(I('search.png')), '', self)
self.search_online_action.triggered.connect(self.search_online)
self.addAction(self.search_online_action)
self.dictionary_action = QAction(QIcon(I('dictionary.png')),
_('&Lookup in dictionary'), self)
self.dictionary_action.triggered.connect(self.lookup)
self.addAction(self.dictionary_action)
self.image_popup = ImagePopup(self)
self.table_popup = TablePopup(self)
self.view_image_action = QAction(QIcon(I('view-image.png')), _('View &image...'), self)
self.view_image_action.triggered.connect(self.image_popup)
self.view_table_action = QAction(QIcon(I('view.png')), _('View &table...'), self)
self.view_table_action.triggered.connect(self.popup_table)
self.search_action = QAction(QIcon(I('dictionary.png')),
_('&Search for next occurrence'), self)
self.search_action.triggered.connect(self.search_next)
self.addAction(self.search_action)
self.goto_location_action = QAction(_('Go to...'), self)
self.goto_location_menu = m = QMenu(self)
self.goto_location_actions = a = {
'Next Page': self.next_page,
'Previous Page': self.previous_page,
'Section Top' : partial(self.scroll_to, 0),
'Document Top': self.goto_document_start,
'Section Bottom':partial(self.scroll_to, 1),
'Document Bottom': self.goto_document_end,
'Next Section': self.goto_next_section,
'Previous Section': self.goto_previous_section,
}
for name, key in [(_('Next Section'), 'Next Section'),
(_('Previous Section'), 'Previous Section'),
(None, None),
(_('Document Start'), 'Document Top'),
(_('Document End'), 'Document Bottom'),
(None, None),
(_('Section Start'), 'Section Top'),
(_('Section End'), 'Section Bottom'),
(None, None),
(_('Next Page'), 'Next Page'),
(_('Previous Page'), 'Previous Page')]:
if key is None:
m.addSeparator()
else:
m.addAction(name, a[key], self.shortcuts.get_sequences(key)[0])
self.goto_location_action.setMenu(self.goto_location_menu)
self.grabGesture(Qt.SwipeGesture)
self.restore_fonts_action = QAction(_('Default font size'), self)
self.restore_fonts_action.setCheckable(True)
self.restore_fonts_action.triggered.connect(self.restore_font_size)
def initialize_view(self, debug_javascript=False):
self.setRenderHints(QPainter.Antialiasing|QPainter.TextAntialiasing|QPainter.SmoothPixmapTransform)
self.flipper = SlideFlip(self)
self.is_auto_repeat_event = False
self.debug_javascript = debug_javascript
self.shortcuts = Shortcuts(SHORTCUTS, 'shortcuts/viewer')
self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))
self._size_hint = QSize(510, 680)
self.initial_pos = 0.0
self.to_bottom = False
self.document = Document(self.shortcuts, parent=self,
debug_javascript=debug_javascript)
self.setPage(self.document)
self.inspector = WebInspector(self, self.document)
self.manager = None
self._reference_mode = False
self._ignore_scrollbar_signals = False
self.loading_url = None
self.loadFinished.connect(self.load_finished)
self.connect(self.document, SIGNAL('linkClicked(QUrl)'), self.link_clicked)
self.connect(self.document, SIGNAL('linkHovered(QString,QString,QString)'), self.link_hovered)
self.connect(self.document, SIGNAL('selectionChanged()'), self.selection_changed)
self.connect(self.document, SIGNAL('animated_scroll_done()'),
self.animated_scroll_done, Qt.QueuedConnection)
self.document.page_turn.connect(self.page_turn_requested)
copy_action = self.pageAction(self.document.Copy)
copy_action.setIcon(QIcon(I('convert.png')))
d = self.document
self.unimplemented_actions = list(map(self.pageAction,
[d.DownloadImageToDisk, d.OpenLinkInNewWindow, d.DownloadLinkToDisk,
d.OpenImageInNewWindow, d.OpenLink, d.Reload, d.InspectElement]))
self.search_online_action = QAction(QIcon(I('search.png')), '', self)
self.search_online_action.triggered.connect(self.search_online)
self.addAction(self.search_online_action)
self.dictionary_action = QAction(QIcon(I('dictionary.png')),
_('&Lookup in dictionary'), self)
self.dictionary_action.triggered.connect(self.lookup)
self.addAction(self.dictionary_action)
self.image_popup = ImagePopup(self)
self.table_popup = TablePopup(self)
self.view_image_action = QAction(QIcon(I('view-image.png')), _('View &image...'), self)
self.view_image_action.triggered.connect(self.image_popup)
self.view_table_action = QAction(QIcon(I('view.png')), _('View &table...'), self)
self.view_table_action.triggered.connect(self.popup_table)
self.search_action = QAction(QIcon(I('dictionary.png')),
_('&Search for next occurrence'), self)
self.search_action.triggered.connect(self.search_next)
self.addAction(self.search_action)
self.goto_location_action = QAction(_('Go to...'), self)
self.goto_location_menu = m = QMenu(self)
self.goto_location_actions = a = {
'Next Page': self.next_page,
'Previous Page': self.previous_page,
'Section Top' : partial(self.scroll_to, 0),
'Document Top': self.goto_document_start,
'Section Bottom':partial(self.scroll_to, 1),
'Document Bottom': self.goto_document_end,
'Next Section': self.goto_next_section,
'Previous Section': self.goto_previous_section,
}
for name, key in [(_('Next Section'), 'Next Section'),
(_('Previous Section'), 'Previous Section'),
(None, None),
(_('Document Start'), 'Document Top'),
(_('Document End'), 'Document Bottom'),
(None, None),
(_('Section Start'), 'Section Top'),
(_('Section End'), 'Section Bottom'),
(None, None),
(_('Next Page'), 'Next Page'),
(_('Previous Page'), 'Previous Page')]:
if key is None:
m.addSeparator()
else:
m.addAction(name, a[key], self.shortcuts.get_sequences(key)[0])
self.goto_location_action.setMenu(self.goto_location_menu)
self.grabGesture(Qt.SwipeGesture)
self.restore_fonts_action = QAction(_('Default font size'), self)
self.restore_fonts_action.setCheckable(True)
self.restore_fonts_action.triggered.connect(self.restore_font_size)
class DocumentView(QWebView): # {{{
magnification_changed = pyqtSignal(object)
DISABLED_BRUSH = QBrush(Qt.lightGray, Qt.Dense5Pattern)
def initialize_view(self, debug_javascript=False):
self.setRenderHints(QPainter.Antialiasing|QPainter.TextAntialiasing|QPainter.SmoothPixmapTransform)
self.flipper = SlideFlip(self)
self.is_auto_repeat_event = False
self.debug_javascript = debug_javascript
self.shortcuts = Shortcuts(SHORTCUTS, 'shortcuts/viewer')
self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))
self._size_hint = QSize(510, 680)
self.initial_pos = 0.0
self.to_bottom = False
self.document = Document(self.shortcuts, parent=self,
debug_javascript=debug_javascript)
self.setPage(self.document)
self.inspector = WebInspector(self, self.document)
self.manager = None
self._reference_mode = False
self._ignore_scrollbar_signals = False
self.loading_url = None
self.loadFinished.connect(self.load_finished)
self.connect(self.document, SIGNAL('linkClicked(QUrl)'), self.link_clicked)
self.connect(self.document, SIGNAL('linkHovered(QString,QString,QString)'), self.link_hovered)
self.connect(self.document, SIGNAL('selectionChanged()'), self.selection_changed)
self.connect(self.document, SIGNAL('animated_scroll_done()'),
self.animated_scroll_done, Qt.QueuedConnection)
self.document.page_turn.connect(self.page_turn_requested)
copy_action = self.pageAction(self.document.Copy)
copy_action.setIcon(QIcon(I('convert.png')))
d = self.document
self.unimplemented_actions = list(map(self.pageAction,
[d.DownloadImageToDisk, d.OpenLinkInNewWindow, d.DownloadLinkToDisk,
d.OpenImageInNewWindow, d.OpenLink, d.Reload, d.InspectElement]))
self.search_online_action = QAction(QIcon(I('search.png')), '', self)
self.search_online_action.triggered.connect(self.search_online)
self.addAction(self.search_online_action)
self.dictionary_action = QAction(QIcon(I('dictionary.png')),
_('&Lookup in dictionary'), self)
self.dictionary_action.triggered.connect(self.lookup)
self.addAction(self.dictionary_action)
self.image_popup = ImagePopup(self)
self.table_popup = TablePopup(self)
self.view_image_action = QAction(QIcon(I('view-image.png')), _('View &image...'), self)
self.view_image_action.triggered.connect(self.image_popup)
self.view_table_action = QAction(QIcon(I('view.png')), _('View &table...'), self)
self.view_table_action.triggered.connect(self.popup_table)
self.search_action = QAction(QIcon(I('dictionary.png')),
_('&Search for next occurrence'), self)
self.search_action.triggered.connect(self.search_next)
self.addAction(self.search_action)
self.goto_location_action = QAction(_('Go to...'), self)
self.goto_location_menu = m = QMenu(self)
self.goto_location_actions = a = {
'Next Page': self.next_page,
'Previous Page': self.previous_page,
'Section Top' : partial(self.scroll_to, 0),
'Document Top': self.goto_document_start,
'Section Bottom':partial(self.scroll_to, 1),
'Document Bottom': self.goto_document_end,
'Next Section': self.goto_next_section,
'Previous Section': self.goto_previous_section,
}
for name, key in [(_('Next Section'), 'Next Section'),
(_('Previous Section'), 'Previous Section'),
(None, None),
(_('Document Start'), 'Document Top'),
(_('Document End'), 'Document Bottom'),
(None, None),
(_('Section Start'), 'Section Top'),
(_('Section End'), 'Section Bottom'),
(None, None),
(_('Next Page'), 'Next Page'),
(_('Previous Page'), 'Previous Page')]:
if key is None:
m.addSeparator()
else:
m.addAction(name, a[key], self.shortcuts.get_sequences(key)[0])
self.goto_location_action.setMenu(self.goto_location_menu)
self.grabGesture(Qt.SwipeGesture)
self.restore_fonts_action = QAction(_('Default font size'), self)
self.restore_fonts_action.setCheckable(True)
self.restore_fonts_action.triggered.connect(self.restore_font_size)
def goto_next_section(self, *args):
if self.manager is not None:
self.manager.goto_next_section()
def goto_previous_section(self, *args):
if self.manager is not None:
self.manager.goto_previous_section()
def goto_document_start(self, *args):
if self.manager is not None:
self.manager.goto_start()
def goto_document_end(self, *args):
if self.manager is not None:
self.manager.goto_end()
@property
def copy_action(self):
return self.pageAction(self.document.Copy)
def animated_scroll_done(self):
if self.manager is not None:
self.manager.scrolled(self.document.scroll_fraction)
def reference_mode(self, enable):
self._reference_mode = enable
self.document.reference_mode(enable)
def goto(self, ref):
self.document.goto(ref)
def goto_bookmark(self, bm):
self.document.goto_bookmark(bm)
def config(self, parent=None):
self.document.do_config(parent)
if self.document.in_fullscreen_mode:
self.document.switch_to_fullscreen_mode()
self.setFocus(Qt.OtherFocusReason)
def load_theme(self, theme_id):
themes = load_themes()
theme = themes[theme_id]
opts = config(theme).parse()
self.document.apply_settings(opts)
if self.document.in_fullscreen_mode:
self.document.switch_to_fullscreen_mode()
self.setFocus(Qt.OtherFocusReason)
def bookmark(self):
return self.document.bookmark()
def selection_changed(self):
if self.manager is not None:
self.manager.selection_changed(unicode(self.document.selectedText()))
def _selectedText(self):
t = unicode(self.selectedText()).strip()
if not t:
return u''
if len(t) > 40:
t = t[:40] + u'...'
t = t.replace(u'&', u'&&')
return _("S&earch Google for '%s'")%t
def popup_table(self):
html = self.document.extract_node()
self.table_popup(html, QUrl.fromLocalFile(self.last_loaded_path),
self.document.font_magnification_step)
def contextMenuEvent(self, ev):
mf = self.document.mainFrame()
r = mf.hitTestContent(ev.pos())
img = r.pixmap()
elem = r.element()
if elem.isNull():
elem = r.enclosingBlockElement()
table = None
parent = elem
while not parent.isNull():
if (unicode(parent.tagName()) == u'table' or
unicode(parent.localName()) == u'table'):
table = parent
break
parent = parent.parent()
self.image_popup.current_img = img
self.image_popup.current_url = r.imageUrl()
menu = self.document.createStandardContextMenu()
for action in self.unimplemented_actions:
menu.removeAction(action)
if not img.isNull():
menu.addAction(self.view_image_action)
if table is not None:
self.document.mark_element.emit(table)
menu.addAction(self.view_table_action)
text = self._selectedText()
if text and img.isNull():
self.search_online_action.setText(text)
for x, sc in (('search_online', 'Search online'), ('dictionary', 'Lookup word'), ('search', 'Next occurrence')):
ac = getattr(self, '%s_action' % x)
menu.addAction(ac.icon(), '%s [%s]' % (unicode(ac.text()), ','.join(self.shortcuts.get_shortcuts(sc))), ac.trigger)
if not text and img.isNull():
menu.addSeparator()
if self.manager.action_back.isEnabled():
menu.addAction(self.manager.action_back)
if self.manager.action_forward.isEnabled():
menu.addAction(self.manager.action_forward)
menu.addAction(self.goto_location_action)
if self.manager is not None:
menu.addSeparator()
menu.addAction(self.manager.action_table_of_contents)
menu.addSeparator()
menu.addAction(self.manager.action_font_size_larger)
self.restore_fonts_action.setChecked(self.multiplier == 1)
menu.addAction(self.restore_fonts_action)
menu.addAction(self.manager.action_font_size_smaller)
menu.addSeparator()
menu.addAction(_('Inspect'), self.inspect)
if not text and img.isNull() and self.manager is not None:
menu.addSeparator()
if (not self.document.show_controls or self.document.in_fullscreen_mode) and self.manager is not None:
menu.addAction(self.manager.toggle_toolbar_action)
menu.addAction(self.manager.action_full_screen)
menu.addSeparator()
menu.addAction(self.manager.action_quit)
menu.exec_(ev.globalPos())
def inspect(self):
self.inspector.show()
self.inspector.raise_()
self.pageAction(self.document.InspectElement).trigger()
def lookup(self, *args):
if self.manager is not None:
t = unicode(self.selectedText()).strip()
if t:
self.manager.lookup(t.split()[0])
def search_next(self):
if self.manager is not None:
t = unicode(self.selectedText()).strip()
if t:
self.manager.search.set_search_string(t)
def search_online(self):
t = unicode(self.selectedText()).strip()
if t:
url = 'https://www.google.com/search?q=' + QUrl().toPercentEncoding(t)
open_url(QUrl.fromEncoded(url))
def set_manager(self, manager):
self.manager = manager
self.scrollbar = manager.horizontal_scrollbar
self.connect(self.scrollbar, SIGNAL('valueChanged(int)'), self.scroll_horizontally)
def scroll_horizontally(self, amount):
self.document.scroll_to(y=self.document.ypos, x=amount)
@property
def scroll_pos(self):
return (self.document.ypos, self.document.ypos +
self.document.window_height)
@property
def viewport_rect(self):
# (left, top, right, bottom) of the viewport in document co-ordinates
# When in paged mode, left and right are the numbers of the columns
# at the left edge and *after* the right edge of the viewport
d = self.document
if d.in_paged_mode:
try:
l, r = d.column_boundaries
except ValueError:
l, r = (0, 1)
else:
l, r = d.xpos, d.xpos + d.window_width
return (l, d.ypos, r, d.ypos + d.window_height)
def link_hovered(self, link, text, context):
link, text = unicode(link), unicode(text)
if link:
self.setCursor(Qt.PointingHandCursor)
else:
self.unsetCursor()
def link_clicked(self, url):
if self.manager is not None:
self.manager.link_clicked(url)
def sizeHint(self):
return self._size_hint
@dynamic_property
def scroll_fraction(self):
def fget(self):
return self.document.scroll_fraction
def fset(self, val):
self.document.scroll_fraction = float(val)
return property(fget=fget, fset=fset)
@property
def hscroll_fraction(self):
return self.document.hscroll_fraction
@property
def content_size(self):
return self.document.width, self.document.height
@dynamic_property
def current_language(self):
def fget(self):
return self.document.current_language
def fset(self, val):
self.document.current_language = val
return property(fget=fget, fset=fset)
def search(self, text, backwards=False):
flags = self.document.FindBackward if backwards else self.document.FindFlags(0)
found = self.document.findText(text, flags)
if found and self.document.in_paged_mode:
self.document.javascript('paged_display.snap_to_selection()')
return found
def path(self):
return os.path.abspath(unicode(self.url().toLocalFile()))
def load_path(self, path, pos=0.0):
self.initial_pos = pos
self.last_loaded_path = path
def callback(lu):
self.loading_url = lu
if self.manager is not None:
self.manager.load_started()
load_html(path, self, codec=getattr(path, 'encoding', 'utf-8'), mime_type=getattr(path,
'mime_type', 'text/html'), pre_load_callback=callback)
entries = set()
for ie in getattr(path, 'index_entries', []):
if ie.start_anchor:
entries.add(ie.start_anchor)
if ie.end_anchor:
entries.add(ie.end_anchor)
self.document.index_anchors = entries
def initialize_scrollbar(self):
if getattr(self, 'scrollbar', None) is not None:
if self.document.in_paged_mode:
self.scrollbar.setVisible(False)
return
delta = self.document.width - self.size().width()
if delta > 0:
self._ignore_scrollbar_signals = True
self.scrollbar.blockSignals(True)
self.scrollbar.setRange(0, delta)
self.scrollbar.setValue(0)
self.scrollbar.setSingleStep(1)
self.scrollbar.setPageStep(int(delta/10.))
self.scrollbar.setVisible(delta > 0)
self.scrollbar.blockSignals(False)
self._ignore_scrollbar_signals = False
def load_finished(self, ok):
if self.loading_url is None:
# An <iframe> finished loading
return
self.loading_url = None
self.document.load_javascript_libraries()
self.document.after_load(self.last_loaded_path)
self._size_hint = self.document.mainFrame().contentsSize()
scrolled = False
if self.to_bottom:
self.to_bottom = False
self.initial_pos = 1.0
if self.initial_pos > 0.0:
scrolled = True
self.scroll_to(self.initial_pos, notify=False)
self.initial_pos = 0.0
self.update()
self.initialize_scrollbar()
self.document.reference_mode(self._reference_mode)
if self.manager is not None:
spine_index = self.manager.load_finished(bool(ok))
if spine_index > -1:
self.document.set_reference_prefix('%d.'%(spine_index+1))
if scrolled:
self.manager.scrolled(self.document.scroll_fraction,
onload=True)
if self.flipper.isVisible():
if self.flipper.running:
self.flipper.setVisible(False)
else:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
@classmethod
def test_line(cls, img, y):
'Test if line contains pixels of exactly the same color'
start = img.pixel(0, y)
for i in range(1, img.width()):
if img.pixel(i, y) != start:
return False
return True
def current_page_image(self, overlap=-1):
if overlap < 0:
overlap = self.height()
img = QImage(self.width(), overlap, QImage.Format_ARGB32_Premultiplied)
painter = QPainter(img)
painter.setRenderHints(self.renderHints())
self.document.mainFrame().render(painter, QRegion(0, 0, self.width(), overlap))
painter.end()
return img
def find_next_blank_line(self, overlap):
img = self.current_page_image(overlap)
for i in range(overlap-1, -1, -1):
if self.test_line(img, i):
self.scroll_by(y=i, notify=False)
return
self.scroll_by(y=overlap)
def previous_page(self):
if self.flipper.running and not self.is_auto_repeat_event:
return
if self.loading_url is not None:
return
epf = self.document.enable_page_flip and not self.is_auto_repeat_event
if self.document.in_paged_mode:
loc = self.document.javascript(
'paged_display.previous_screen_location()', typ='int')
if loc < 0:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image(),
forwards=False)
self.manager.previous_document()
else:
if epf:
self.flipper.initialize(self.current_page_image(),
forwards=False)
self.document.scroll_to(x=loc, y=0)
if epf:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
return
delta_y = self.document.window_height - 25
if self.document.at_top:
if self.manager is not None:
self.to_bottom = True
if epf:
self.flipper.initialize(self.current_page_image(), False)
self.manager.previous_document()
else:
opos = self.document.ypos
upper_limit = opos - delta_y
if upper_limit < 0:
upper_limit = 0
if upper_limit < opos:
if epf:
self.flipper.initialize(self.current_page_image(),
forwards=False)
self.document.scroll_to(self.document.xpos, upper_limit)
if epf:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
def next_page(self):
if self.flipper.running and not self.is_auto_repeat_event:
return
if self.loading_url is not None:
return
epf = self.document.enable_page_flip and not self.is_auto_repeat_event
if self.document.in_paged_mode:
loc = self.document.javascript(
'paged_display.next_screen_location()', typ='int')
if loc < 0:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image())
self.manager.next_document()
else:
if epf:
self.flipper.initialize(self.current_page_image())
self.document.scroll_to(x=loc, y=0)
if epf:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
return
window_height = self.document.window_height
document_height = self.document.height
ddelta = document_height - window_height
# print '\nWindow height:', window_height
# print 'Document height:', self.document.height
delta_y = window_height - 25
if self.document.at_bottom or ddelta <= 0:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image())
self.manager.next_document()
elif ddelta < 25:
self.scroll_by(y=ddelta)
return
else:
oopos = self.document.ypos
# print 'Original position:', oopos
self.document.set_bottom_padding(0)
opos = self.document.ypos
# print 'After set padding=0:', self.document.ypos
if opos < oopos:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image())
self.manager.next_document()
return
# oheight = self.document.height
lower_limit = opos + delta_y # Max value of top y co-ord after scrolling
max_y = self.document.height - window_height # The maximum possible top y co-ord
if max_y < lower_limit:
padding = lower_limit - max_y
if padding == window_height:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image())
self.manager.next_document()
return
# print 'Setting padding to:', lower_limit - max_y
self.document.set_bottom_padding(lower_limit - max_y)
if epf:
self.flipper.initialize(self.current_page_image())
# print 'Document height:', self.document.height
# print 'Height change:', (self.document.height - oheight)
max_y = self.document.height - window_height
lower_limit = min(max_y, lower_limit)
# print 'Scroll to:', lower_limit
if lower_limit > opos:
self.document.scroll_to(self.document.xpos, lower_limit)
actually_scrolled = self.document.ypos - opos
# print 'After scroll pos:', self.document.ypos
# print 'Scrolled by:', self.document.ypos - opos
self.find_next_blank_line(window_height - actually_scrolled)
# print 'After blank line pos:', self.document.ypos
if epf:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
# print 'After all:', self.document.ypos
def page_turn_requested(self, backwards):
if backwards:
self.previous_page()
else:
self.next_page()
def scroll_by(self, x=0, y=0, notify=True):
old_pos = (self.document.xpos if self.document.in_paged_mode else
self.document.ypos)
self.document.scroll_by(x, y)
new_pos = (self.document.xpos if self.document.in_paged_mode else
self.document.ypos)
if notify and self.manager is not None and new_pos != old_pos:
self.manager.scrolled(self.scroll_fraction)
def scroll_to(self, pos, notify=True):
if self._ignore_scrollbar_signals:
return
old_pos = (self.document.xpos if self.document.in_paged_mode else
self.document.ypos)
if self.document.in_paged_mode:
if isinstance(pos, basestring):
self.document.jump_to_anchor(pos)
else:
self.document.scroll_fraction = pos
else:
if isinstance(pos, basestring):
self.document.jump_to_anchor(pos)
else:
if pos >= 1:
self.document.scroll_to(0, self.document.height)
else:
y = int(math.ceil(
pos*(self.document.height-self.document.window_height)))
self.document.scroll_to(0, y)
new_pos = (self.document.xpos if self.document.in_paged_mode else
self.document.ypos)
if notify and self.manager is not None and new_pos != old_pos:
self.manager.scrolled(self.scroll_fraction)
@dynamic_property
def multiplier(self):
def fget(self):
return self.zoomFactor()
def fset(self, val):
self.setZoomFactor(val)
self.magnification_changed.emit(val)
return property(fget=fget, fset=fset)
def magnify_fonts(self, amount=None):
if amount is None:
amount = self.document.font_magnification_step
with self.document.page_position:
self.multiplier += amount
return self.document.scroll_fraction
def shrink_fonts(self, amount=None):
if amount is None:
amount = self.document.font_magnification_step
if self.multiplier >= amount:
with self.document.page_position:
self.multiplier -= amount
return self.document.scroll_fraction
def restore_font_size(self):
with self.document.page_position:
self.multiplier = 1
return self.document.scroll_fraction
def changeEvent(self, event):
if event.type() == event.EnabledChange:
self.update()
return QWebView.changeEvent(self, event)
def paintEvent(self, event):
painter = QPainter(self)
painter.setRenderHints(self.renderHints())
self.document.mainFrame().render(painter, event.region())
if not self.isEnabled():
painter.fillRect(event.region().boundingRect(), self.DISABLED_BRUSH)
painter.end()
def wheelEvent(self, event):
mods = event.modifiers()
if mods & Qt.CTRL:
if self.manager is not None and event.delta() != 0:
(self.manager.font_size_larger if event.delta() > 0 else
self.manager.font_size_smaller)()
return
if self.document.in_paged_mode:
if abs(event.delta()) < 15:
return
typ = 'screen' if self.document.wheel_flips_pages else 'col'
direction = 'next' if event.delta() < 0 else 'previous'
loc = self.document.javascript('paged_display.%s_%s_location()'%(
direction, typ), typ='int')
if loc > -1:
self.document.scroll_to(x=loc, y=0)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
event.accept()
elif self.manager is not None:
if direction == 'next':
self.manager.next_document()
else:
self.manager.previous_document()
event.accept()
return
if event.delta() < -14:
if self.document.wheel_flips_pages:
self.next_page()
event.accept()
return
if self.document.at_bottom:
self.scroll_by(y=15) # at_bottom can lie on windows
if self.manager is not None:
self.manager.next_document()
event.accept()
return
elif event.delta() > 14:
if self.document.wheel_flips_pages:
self.previous_page()
event.accept()
return
if self.document.at_top:
if self.manager is not None:
self.manager.previous_document()
event.accept()
return
ret = QWebView.wheelEvent(self, event)
scroll_amount = (event.delta() / 120.0) * .2 * -1
if event.orientation() == Qt.Vertical:
self.scroll_by(0, self.document.viewportSize().height() * scroll_amount)
else:
self.scroll_by(self.document.viewportSize().width() * scroll_amount, 0)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
return ret
def keyPressEvent(self, event):
if not self.handle_key_press(event):
return QWebView.keyPressEvent(self, event)
def paged_col_scroll(self, forward=True, scroll_past_end=True):
dir = 'next' if forward else 'previous'
loc = self.document.javascript(
'paged_display.%s_col_location()'%dir, typ='int')
if loc > -1:
self.document.scroll_to(x=loc, y=0)
self.manager.scrolled(self.document.scroll_fraction)
elif scroll_past_end:
(self.manager.next_document() if forward else
self.manager.previous_document())
def handle_key_press(self, event):
handled = True
key = self.shortcuts.get_match(event)
func = self.goto_location_actions.get(key, None)
if func is not None:
self.is_auto_repeat_event = event.isAutoRepeat()
try:
func()
finally:
self.is_auto_repeat_event = False
elif key == 'Down':
if self.document.in_paged_mode:
self.paged_col_scroll(scroll_past_end=not
self.document.line_scrolling_stops_on_pagebreaks)
else:
if (not self.document.line_scrolling_stops_on_pagebreaks and
self.document.at_bottom):
self.manager.next_document()
else:
self.scroll_by(y=15)
elif key == 'Up':
if self.document.in_paged_mode:
self.paged_col_scroll(forward=False, scroll_past_end=not
self.document.line_scrolling_stops_on_pagebreaks)
else:
if (not self.document.line_scrolling_stops_on_pagebreaks and
self.document.at_top):
self.manager.previous_document()
else:
self.scroll_by(y=-15)
elif key == 'Left':
if self.document.in_paged_mode:
self.paged_col_scroll(forward=False)
else:
self.scroll_by(x=-15)
elif key == 'Right':
if self.document.in_paged_mode:
self.paged_col_scroll()
else:
self.scroll_by(x=15)
elif key == 'Back':
if self.manager is not None:
self.manager.back(None)
elif key == 'Forward':
if self.manager is not None:
self.manager.forward(None)
else:
handled = False
return handled
def resizeEvent(self, event):
if self.manager is not None:
self.manager.viewport_resize_started(event)
return QWebView.resizeEvent(self, event)
def event(self, ev):
if ev.type() == ev.Gesture:
swipe = ev.gesture(Qt.SwipeGesture)
if swipe is not None:
self.handle_swipe(swipe)
return True
return QWebView.event(self, ev)
def handle_swipe(self, swipe):
if swipe.state() == Qt.GestureFinished:
if swipe.horizontalDirection() == QSwipeGesture.Left:
self.previous_page()
elif swipe.horizontalDirection() == QSwipeGesture.Right:
self.next_page()
elif swipe.verticalDirection() == QSwipeGesture.Up:
self.goto_previous_section()
elif swipe.horizontalDirection() == QSwipeGesture.Down:
self.goto_next_section()
def mouseReleaseEvent(self, ev):
opos = self.document.ypos
ret = QWebView.mouseReleaseEvent(self, ev)
if self.manager is not None and opos != self.document.ypos:
self.manager.internal_link_clicked(opos)
self.manager.scrolled(self.scroll_fraction)
return ret
class DocumentView(QWebView): # {{{
magnification_changed = pyqtSignal(object)
DISABLED_BRUSH = QBrush(Qt.lightGray, Qt.Dense5Pattern)
def initialize_view(self, debug_javascript=False):
self.setRenderHints(QPainter.Antialiasing|QPainter.TextAntialiasing|QPainter.SmoothPixmapTransform)
self.flipper = SlideFlip(self)
self.is_auto_repeat_event = False
self.debug_javascript = debug_javascript
self.shortcuts = Shortcuts(SHORTCUTS, 'shortcuts/viewer')
self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding))
self._size_hint = QSize(510, 680)
self.initial_pos = 0.0
self.to_bottom = False
self.document = Document(self.shortcuts, parent=self,
debug_javascript=debug_javascript)
self.setPage(self.document)
self.inspector = WebInspector(self, self.document)
self.manager = None
self._reference_mode = False
self._ignore_scrollbar_signals = False
self.loading_url = None
self.loadFinished.connect(self.load_finished)
self.connect(self.document, SIGNAL('linkClicked(QUrl)'), self.link_clicked)
self.connect(self.document, SIGNAL('linkHovered(QString,QString,QString)'), self.link_hovered)
self.connect(self.document, SIGNAL('selectionChanged()'), self.selection_changed)
self.connect(self.document, SIGNAL('animated_scroll_done()'),
self.animated_scroll_done, Qt.QueuedConnection)
self.document.page_turn.connect(self.page_turn_requested)
copy_action = self.pageAction(self.document.Copy)
copy_action.setIcon(QIcon(I('convert.png')))
d = self.document
self.unimplemented_actions = list(map(self.pageAction,
[d.DownloadImageToDisk, d.OpenLinkInNewWindow, d.DownloadLinkToDisk,
d.OpenImageInNewWindow, d.OpenLink, d.Reload, d.InspectElement]))
self.search_online_action = QAction(QIcon(I('search.png')), '', self)
self.search_online_action.triggered.connect(self.search_online)
self.addAction(self.search_online_action)
self.dictionary_action = QAction(QIcon(I('dictionary.png')),
_('&Lookup in dictionary'), self)
self.dictionary_action.triggered.connect(self.lookup)
self.addAction(self.dictionary_action)
self.image_popup = ImagePopup(self)
self.table_popup = TablePopup(self)
self.view_image_action = QAction(QIcon(I('view-image.png')), _('View &image...'), self)
self.view_image_action.triggered.connect(self.image_popup)
self.view_table_action = QAction(QIcon(I('view.png')), _('View &table...'), self)
self.view_table_action.triggered.connect(self.popup_table)
self.search_action = QAction(QIcon(I('dictionary.png')),
_('&Search for next occurrence'), self)
self.search_action.triggered.connect(self.search_next)
self.addAction(self.search_action)
self.goto_location_action = QAction(_('Go to...'), self)
self.goto_location_menu = m = QMenu(self)
self.goto_location_actions = a = {
'Next Page': self.next_page,
'Previous Page': self.previous_page,
'Section Top' : partial(self.scroll_to, 0),
'Document Top': self.goto_document_start,
'Section Bottom':partial(self.scroll_to, 1),
'Document Bottom': self.goto_document_end,
'Next Section': self.goto_next_section,
'Previous Section': self.goto_previous_section,
}
for name, key in [(_('Next Section'), 'Next Section'),
(_('Previous Section'), 'Previous Section'),
(None, None),
(_('Document Start'), 'Document Top'),
(_('Document End'), 'Document Bottom'),
(None, None),
(_('Section Start'), 'Section Top'),
(_('Section End'), 'Section Bottom'),
(None, None),
(_('Next Page'), 'Next Page'),
(_('Previous Page'), 'Previous Page')]:
if key is None:
m.addSeparator()
else:
m.addAction(name, a[key], self.shortcuts.get_sequences(key)[0])
self.goto_location_action.setMenu(self.goto_location_menu)
self.grabGesture(Qt.SwipeGesture)
self.restore_fonts_action = QAction(_('Default font size'), self)
self.restore_fonts_action.setCheckable(True)
self.restore_fonts_action.triggered.connect(self.restore_font_size)
def goto_next_section(self, *args):
if self.manager is not None:
self.manager.goto_next_section()
def goto_previous_section(self, *args):
if self.manager is not None:
self.manager.goto_previous_section()
def goto_document_start(self, *args):
if self.manager is not None:
self.manager.goto_start()
def goto_document_end(self, *args):
if self.manager is not None:
self.manager.goto_end()
@property
def copy_action(self):
return self.pageAction(self.document.Copy)
def animated_scroll_done(self):
if self.manager is not None:
self.manager.scrolled(self.document.scroll_fraction)
def reference_mode(self, enable):
self._reference_mode = enable
self.document.reference_mode(enable)
def goto(self, ref):
self.document.goto(ref)
def goto_bookmark(self, bm):
self.document.goto_bookmark(bm)
def config(self, parent=None):
self.document.do_config(parent)
if self.document.in_fullscreen_mode:
self.document.switch_to_fullscreen_mode()
self.setFocus(Qt.OtherFocusReason)
def load_theme(self, theme_id):
themes = load_themes()
theme = themes[theme_id]
opts = config(theme).parse()
self.document.apply_settings(opts)
if self.document.in_fullscreen_mode:
self.document.switch_to_fullscreen_mode()
self.setFocus(Qt.OtherFocusReason)
def bookmark(self):
return self.document.bookmark()
def selection_changed(self):
if self.manager is not None:
self.manager.selection_changed(unicode(self.document.selectedText()))
def _selectedText(self):
t = unicode(self.selectedText()).strip()
if not t:
return u''
if len(t) > 40:
t = t[:40] + u'...'
t = t.replace(u'&', u'&&')
return _("S&earch Google for '%s'")%t
def popup_table(self):
html = self.document.extract_node()
self.table_popup(html, QUrl.fromLocalFile(self.last_loaded_path),
self.document.font_magnification_step)
def contextMenuEvent(self, ev):
mf = self.document.mainFrame()
r = mf.hitTestContent(ev.pos())
img = r.pixmap()
elem = r.element()
if elem.isNull():
elem = r.enclosingBlockElement()
table = None
parent = elem
while not parent.isNull():
if (unicode(parent.tagName()) == u'table' or
unicode(parent.localName()) == u'table'):
table = parent
break
parent = parent.parent()
self.image_popup.current_img = img
self.image_popup.current_url = r.imageUrl()
menu = self.document.createStandardContextMenu()
for action in self.unimplemented_actions:
menu.removeAction(action)
if not img.isNull():
menu.addAction(self.view_image_action)
if table is not None:
self.document.mark_element.emit(table)
menu.addAction(self.view_table_action)
text = self._selectedText()
if text and img.isNull():
self.search_online_action.setText(text)
for x, sc in (('search_online', 'Search online'), ('dictionary', 'Lookup word'), ('search', 'Next occurrence')):
ac = getattr(self, '%s_action' % x)
menu.addAction(ac.icon(), '%s [%s]' % (unicode(ac.text()), ','.join(self.shortcuts.get_shortcuts(sc))), ac.trigger)
if not text and img.isNull():
menu.addSeparator()
if self.manager.action_back.isEnabled():
menu.addAction(self.manager.action_back)
if self.manager.action_forward.isEnabled():
menu.addAction(self.manager.action_forward)
menu.addAction(self.goto_location_action)
if self.manager is not None:
menu.addSeparator()
menu.addAction(self.manager.action_table_of_contents)
menu.addSeparator()
menu.addAction(self.manager.action_font_size_larger)
self.restore_fonts_action.setChecked(self.multiplier == 1)
menu.addAction(self.restore_fonts_action)
menu.addAction(self.manager.action_font_size_smaller)
menu.addSeparator()
menu.addAction(_('Inspect'), self.inspect)
if not text and img.isNull() and self.manager is not None:
menu.addSeparator()
if (not self.document.show_controls or self.document.in_fullscreen_mode) and self.manager is not None:
menu.addAction(self.manager.toggle_toolbar_action)
menu.addAction(self.manager.action_full_screen)
menu.addSeparator()
menu.addAction(self.manager.action_quit)
for plugin in self.document.all_viewer_plugins:
plugin.customize_context_menu(menu, ev, r)
menu.exec_(ev.globalPos())
def inspect(self):
self.inspector.show()
self.inspector.raise_()
self.pageAction(self.document.InspectElement).trigger()
def lookup(self, *args):
if self.manager is not None:
t = unicode(self.selectedText()).strip()
if t:
self.manager.lookup(t.split()[0])
def search_next(self):
if self.manager is not None:
t = unicode(self.selectedText()).strip()
if t:
self.manager.search.set_search_string(t)
def search_online(self):
t = unicode(self.selectedText()).strip()
if t:
url = 'https://www.google.com/search?q=' + QUrl().toPercentEncoding(t)
open_url(QUrl.fromEncoded(url))
def set_manager(self, manager):
self.manager = manager
self.scrollbar = manager.horizontal_scrollbar
self.connect(self.scrollbar, SIGNAL('valueChanged(int)'), self.scroll_horizontally)
def scroll_horizontally(self, amount):
self.document.scroll_to(y=self.document.ypos, x=amount)
@property
def scroll_pos(self):
return (self.document.ypos, self.document.ypos +
self.document.window_height)
@property
def viewport_rect(self):
# (left, top, right, bottom) of the viewport in document co-ordinates
# When in paged mode, left and right are the numbers of the columns
# at the left edge and *after* the right edge of the viewport
d = self.document
if d.in_paged_mode:
try:
l, r = d.column_boundaries
except ValueError:
l, r = (0, 1)
else:
l, r = d.xpos, d.xpos + d.window_width
return (l, d.ypos, r, d.ypos + d.window_height)
def link_hovered(self, link, text, context):
link, text = unicode(link), unicode(text)
if link:
self.setCursor(Qt.PointingHandCursor)
else:
self.unsetCursor()
def link_clicked(self, url):
if self.manager is not None:
self.manager.link_clicked(url)
def sizeHint(self):
return self._size_hint
@dynamic_property
def scroll_fraction(self):
def fget(self):
return self.document.scroll_fraction
def fset(self, val):
self.document.scroll_fraction = float(val)
return property(fget=fget, fset=fset)
@property
def hscroll_fraction(self):
return self.document.hscroll_fraction
@property
def content_size(self):
return self.document.width, self.document.height
@dynamic_property
def current_language(self):
def fget(self):
return self.document.current_language
def fset(self, val):
self.document.current_language = val
return property(fget=fget, fset=fset)
def search(self, text, backwards=False):
flags = self.document.FindBackward if backwards else self.document.FindFlags(0)
found = self.document.findText(text, flags)
if found and self.document.in_paged_mode:
self.document.javascript('paged_display.snap_to_selection()')
return found
def path(self):
return os.path.abspath(unicode(self.url().toLocalFile()))
def load_path(self, path, pos=0.0):
self.initial_pos = pos
self.last_loaded_path = path
def callback(lu):
self.loading_url = lu
if self.manager is not None:
self.manager.load_started()
load_html(path, self, codec=getattr(path, 'encoding', 'utf-8'), mime_type=getattr(path,
'mime_type', 'text/html'), pre_load_callback=callback)
entries = set()
for ie in getattr(path, 'index_entries', []):
if ie.start_anchor:
entries.add(ie.start_anchor)
if ie.end_anchor:
entries.add(ie.end_anchor)
self.document.index_anchors = entries
def initialize_scrollbar(self):
if getattr(self, 'scrollbar', None) is not None:
if self.document.in_paged_mode:
self.scrollbar.setVisible(False)
return
delta = self.document.width - self.size().width()
if delta > 0:
self._ignore_scrollbar_signals = True
self.scrollbar.blockSignals(True)
self.scrollbar.setRange(0, delta)
self.scrollbar.setValue(0)
self.scrollbar.setSingleStep(1)
self.scrollbar.setPageStep(int(delta/10.))
self.scrollbar.setVisible(delta > 0)
self.scrollbar.blockSignals(False)
self._ignore_scrollbar_signals = False
def load_finished(self, ok):
if self.loading_url is None:
# An <iframe> finished loading
return
self.loading_url = None
self.document.load_javascript_libraries()
self.document.after_load(self.last_loaded_path)
self._size_hint = self.document.mainFrame().contentsSize()
scrolled = False
if self.to_bottom:
self.to_bottom = False
self.initial_pos = 1.0
if self.initial_pos > 0.0:
scrolled = True
self.scroll_to(self.initial_pos, notify=False)
self.initial_pos = 0.0
self.update()
self.initialize_scrollbar()
self.document.reference_mode(self._reference_mode)
if self.manager is not None:
spine_index = self.manager.load_finished(bool(ok))
if spine_index > -1:
self.document.set_reference_prefix('%d.'%(spine_index+1))
if scrolled:
self.manager.scrolled(self.document.scroll_fraction,
onload=True)
if self.flipper.isVisible():
if self.flipper.running:
self.flipper.setVisible(False)
else:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
@classmethod
def test_line(cls, img, y):
'Test if line contains pixels of exactly the same color'
start = img.pixel(0, y)
for i in range(1, img.width()):
if img.pixel(i, y) != start:
return False
return True
def current_page_image(self, overlap=-1):
if overlap < 0:
overlap = self.height()
img = QImage(self.width(), overlap, QImage.Format_ARGB32_Premultiplied)
painter = QPainter(img)
painter.setRenderHints(self.renderHints())
self.document.mainFrame().render(painter, QRegion(0, 0, self.width(), overlap))
painter.end()
return img
def find_next_blank_line(self, overlap):
img = self.current_page_image(overlap)
for i in range(overlap-1, -1, -1):
if self.test_line(img, i):
self.scroll_by(y=i, notify=False)
return
self.scroll_by(y=overlap)
def previous_page(self):
if self.flipper.running and not self.is_auto_repeat_event:
return
if self.loading_url is not None:
return
epf = self.document.enable_page_flip and not self.is_auto_repeat_event
if self.document.in_paged_mode:
loc = self.document.javascript(
'paged_display.previous_screen_location()', typ='int')
if loc < 0:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image(),
forwards=False)
self.manager.previous_document()
else:
if epf:
self.flipper.initialize(self.current_page_image(),
forwards=False)
self.document.scroll_to(x=loc, y=0)
if epf:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
return
delta_y = self.document.window_height - 25
if self.document.at_top:
if self.manager is not None:
self.to_bottom = True
if epf:
self.flipper.initialize(self.current_page_image(), False)
self.manager.previous_document()
else:
opos = self.document.ypos
upper_limit = opos - delta_y
if upper_limit < 0:
upper_limit = 0
if upper_limit < opos:
if epf:
self.flipper.initialize(self.current_page_image(),
forwards=False)
self.document.scroll_to(self.document.xpos, upper_limit)
if epf:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
def next_page(self):
if self.flipper.running and not self.is_auto_repeat_event:
return
if self.loading_url is not None:
return
epf = self.document.enable_page_flip and not self.is_auto_repeat_event
if self.document.in_paged_mode:
loc = self.document.javascript(
'paged_display.next_screen_location()', typ='int')
if loc < 0:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image())
self.manager.next_document()
else:
if epf:
self.flipper.initialize(self.current_page_image())
self.document.scroll_to(x=loc, y=0)
if epf:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
return
window_height = self.document.window_height
document_height = self.document.height
ddelta = document_height - window_height
# print '\nWindow height:', window_height
# print 'Document height:', self.document.height
delta_y = window_height - 25
if self.document.at_bottom or ddelta <= 0:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image())
self.manager.next_document()
elif ddelta < 25:
self.scroll_by(y=ddelta)
return
else:
oopos = self.document.ypos
# print 'Original position:', oopos
self.document.set_bottom_padding(0)
opos = self.document.ypos
# print 'After set padding=0:', self.document.ypos
if opos < oopos:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image())
self.manager.next_document()
return
# oheight = self.document.height
lower_limit = opos + delta_y # Max value of top y co-ord after scrolling
max_y = self.document.height - window_height # The maximum possible top y co-ord
if max_y < lower_limit:
padding = lower_limit - max_y
if padding == window_height:
if self.manager is not None:
if epf:
self.flipper.initialize(self.current_page_image())
self.manager.next_document()
return
# print 'Setting padding to:', lower_limit - max_y
self.document.set_bottom_padding(lower_limit - max_y)
if epf:
self.flipper.initialize(self.current_page_image())
# print 'Document height:', self.document.height
# print 'Height change:', (self.document.height - oheight)
max_y = self.document.height - window_height
lower_limit = min(max_y, lower_limit)
# print 'Scroll to:', lower_limit
if lower_limit > opos:
self.document.scroll_to(self.document.xpos, lower_limit)
actually_scrolled = self.document.ypos - opos
# print 'After scroll pos:', self.document.ypos
# print 'Scrolled by:', self.document.ypos - opos
self.find_next_blank_line(window_height - actually_scrolled)
# print 'After blank line pos:', self.document.ypos
if epf:
self.flipper(self.current_page_image(),
duration=self.document.page_flip_duration)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
# print 'After all:', self.document.ypos
def page_turn_requested(self, backwards):
if backwards:
self.previous_page()
else:
self.next_page()
def scroll_by(self, x=0, y=0, notify=True):
old_pos = (self.document.xpos if self.document.in_paged_mode else
self.document.ypos)
self.document.scroll_by(x, y)
new_pos = (self.document.xpos if self.document.in_paged_mode else
self.document.ypos)
if notify and self.manager is not None and new_pos != old_pos:
self.manager.scrolled(self.scroll_fraction)
def scroll_to(self, pos, notify=True):
if self._ignore_scrollbar_signals:
return
old_pos = (self.document.xpos if self.document.in_paged_mode else
self.document.ypos)
if self.document.in_paged_mode:
if isinstance(pos, basestring):
self.document.jump_to_anchor(pos)
else:
self.document.scroll_fraction = pos
else:
if isinstance(pos, basestring):
self.document.jump_to_anchor(pos)
else:
if pos >= 1:
self.document.scroll_to(0, self.document.height)
else:
y = int(math.ceil(
pos*(self.document.height-self.document.window_height)))
self.document.scroll_to(0, y)
new_pos = (self.document.xpos if self.document.in_paged_mode else
self.document.ypos)
if notify and self.manager is not None and new_pos != old_pos:
self.manager.scrolled(self.scroll_fraction)
@dynamic_property
def multiplier(self):
def fget(self):
return self.zoomFactor()
def fset(self, val):
self.setZoomFactor(val)
self.magnification_changed.emit(val)
return property(fget=fget, fset=fset)
def magnify_fonts(self, amount=None):
if amount is None:
amount = self.document.font_magnification_step
with self.document.page_position:
self.multiplier += amount
return self.document.scroll_fraction
def shrink_fonts(self, amount=None):
if amount is None:
amount = self.document.font_magnification_step
if self.multiplier >= amount:
with self.document.page_position:
self.multiplier -= amount
return self.document.scroll_fraction
def restore_font_size(self):
with self.document.page_position:
self.multiplier = 1
return self.document.scroll_fraction
def changeEvent(self, event):
if event.type() == event.EnabledChange:
self.update()
return QWebView.changeEvent(self, event)
def paintEvent(self, event):
painter = QPainter(self)
painter.setRenderHints(self.renderHints())
self.document.mainFrame().render(painter, event.region())
if not self.isEnabled():
painter.fillRect(event.region().boundingRect(), self.DISABLED_BRUSH)
painter.end()
def wheelEvent(self, event):
mods = event.modifiers()
if mods & Qt.CTRL:
if self.manager is not None and event.delta() != 0:
(self.manager.font_size_larger if event.delta() > 0 else
self.manager.font_size_smaller)()
return
if self.document.in_paged_mode:
if abs(event.delta()) < 15:
return
typ = 'screen' if self.document.wheel_flips_pages else 'col'
direction = 'next' if event.delta() < 0 else 'previous'
loc = self.document.javascript('paged_display.%s_%s_location()'%(
direction, typ), typ='int')
if loc > -1:
self.document.scroll_to(x=loc, y=0)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
event.accept()
elif self.manager is not None:
if direction == 'next':
self.manager.next_document()
else:
self.manager.previous_document()
event.accept()
return
if event.delta() < -14:
if self.document.wheel_flips_pages:
self.next_page()
event.accept()
return
if self.document.at_bottom:
self.scroll_by(y=15) # at_bottom can lie on windows
if self.manager is not None:
self.manager.next_document()
event.accept()
return
elif event.delta() > 14:
if self.document.wheel_flips_pages:
self.previous_page()
event.accept()
return
if self.document.at_top:
if self.manager is not None:
self.manager.previous_document()
event.accept()
return
ret = QWebView.wheelEvent(self, event)
scroll_amount = (event.delta() / 120.0) * .2 * -1
if event.orientation() == Qt.Vertical:
self.scroll_by(0, self.document.viewportSize().height() * scroll_amount)
else:
self.scroll_by(self.document.viewportSize().width() * scroll_amount, 0)
if self.manager is not None:
self.manager.scrolled(self.scroll_fraction)
return ret
def keyPressEvent(self, event):
if not self.handle_key_press(event):
return QWebView.keyPressEvent(self, event)
def paged_col_scroll(self, forward=True, scroll_past_end=True):
dir = 'next' if forward else 'previous'
loc = self.document.javascript(
'paged_display.%s_col_location()'%dir, typ='int')
if loc > -1:
self.document.scroll_to(x=loc, y=0)
self.manager.scrolled(self.document.scroll_fraction)
elif scroll_past_end:
(self.manager.next_document() if forward else
self.manager.previous_document())
def handle_key_press(self, event):
handled = True
key = self.shortcuts.get_match(event)
func = self.goto_location_actions.get(key, None)
if func is not None:
self.is_auto_repeat_event = event.isAutoRepeat()
try:
func()
finally:
self.is_auto_repeat_event = False
elif key == 'Down':
if self.document.in_paged_mode:
self.paged_col_scroll(scroll_past_end=not
self.document.line_scrolling_stops_on_pagebreaks)
else:
if (not self.document.line_scrolling_stops_on_pagebreaks and
self.document.at_bottom):
self.manager.next_document()
else:
self.scroll_by(y=15)
elif key == 'Up':
if self.document.in_paged_mode:
self.paged_col_scroll(forward=False, scroll_past_end=not
self.document.line_scrolling_stops_on_pagebreaks)
else:
if (not self.document.line_scrolling_stops_on_pagebreaks and
self.document.at_top):
self.manager.previous_document()
else:
self.scroll_by(y=-15)
elif key == 'Left':
if self.document.in_paged_mode:
self.paged_col_scroll(forward=False)
else:
self.scroll_by(x=-15)
elif key == 'Right':
if self.document.in_paged_mode:
self.paged_col_scroll()
else:
self.scroll_by(x=15)
elif key == 'Back':
if self.manager is not None:
self.manager.back(None)
elif key == 'Forward':
if self.manager is not None:
self.manager.forward(None)
else:
handled = False
return handled
def resizeEvent(self, event):
if self.manager is not None:
self.manager.viewport_resize_started(event)
return QWebView.resizeEvent(self, event)
def event(self, ev):
if ev.type() == ev.Gesture:
swipe = ev.gesture(Qt.SwipeGesture)
if swipe is not None:
self.handle_swipe(swipe)
return True
return QWebView.event(self, ev)
def handle_swipe(self, swipe):
if swipe.state() == Qt.GestureFinished:
if swipe.horizontalDirection() == QSwipeGesture.Left:
self.previous_page()
elif swipe.horizontalDirection() == QSwipeGesture.Right:
self.next_page()
elif swipe.verticalDirection() == QSwipeGesture.Up:
self.goto_previous_section()
elif swipe.horizontalDirection() == QSwipeGesture.Down:
self.goto_next_section()
def mouseReleaseEvent(self, ev):
opos = self.document.ypos
ret = QWebView.mouseReleaseEvent(self, ev)
if self.manager is not None and opos != self.document.ypos:
self.manager.internal_link_clicked(opos)
self.manager.scrolled(self.scroll_fraction)
return ret