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#!/usr/bin/env python
import logging
from gi.repository import Gtk
from gi.repository import WebKit
class TestScrollWeb:
def __init__(self):
window = Gtk.Window()
window.set_default_size(400, 350)
window.connect('destroy', Gtk.main_quit)
self._sw = Gtk.ScrolledWindow()
self._view = WebKit.WebView()
# Uncommenting this line
# and pressing many times pgup pgdown in the viewer
# crash my gnome session
#self._view.connect('load-finished', self._view_load_finished_cb)
self._view.load_uri('http://es.wikipedia.org/wiki/Cristobal_Colon')
settings = self._view.get_settings()
settings.props.default_font_family = 'DejaVu LGC Serif'
settings.props.enable_plugins = False
settings.props.default_encoding = 'utf-8'
self._view.connect('scroll-event', self._view_scroll_event_cb)
self._sw.add(self._view)
self._sw.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.NEVER)
self._v_vscrollbar = self._sw.get_vscrollbar()
self._v_scrollbar_value_changed_cb_id = \
self._v_vscrollbar.connect('value-changed', \
self._v_scrollbar_value_changed_cb)
window.add(self._sw)
window.show_all()
def _view_load_finished_cb(self, v, frame):
logging.debug('*** _view_load_finished_cb')
# Normally the line below would not be required - ugly workaround for
# possible Webkit bug. See : https://bugs.launchpad.net/bugs/483231
self._sw.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.NEVER)
def _v_scrollbar_value_changed_cb(self, scrollbar):
logging.error('_v_scrollbar_value_changed_cb value = %f upper %f lower %f page_size %f',
self._v_vscrollbar.get_value(),
self._v_vscrollbar.props.adjustment.props.upper,
self._v_vscrollbar.props.adjustment.props.lower,
self._v_vscrollbar.props.adjustment.props.page_size)
def _view_scroll_event_cb(self, view, event):
logging.error('_view_scroll_event_cb value = %f upper %f lower %f page_size %f',
self._v_vscrollbar.get_value(),
self._v_vscrollbar.props.adjustment.props.upper,
self._v_vscrollbar.props.adjustment.props.lower,
self._v_vscrollbar.props.adjustment.props.page_size)
def main():
test = TestScrollWeb()
Gtk.main()
if __name__ == "__main__":
main()
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