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# Copyright (C) 2009 Canonical
#
# Authors:
# Michael Vogt
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; version 3.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
import gconf
import glib
import gio
import gtk
import logging
import tempfile
import time
import threading
import urllib
import gobject
from softwarecenter.enums import *
from softwarecenter.utils import get_http_proxy_string_from_gconf
ICON_EXCEPTIONS = ["gnome"]
class Url404Error(IOError):
pass
class Url403Error(IOError):
pass
class GnomeProxyURLopener(urllib.FancyURLopener):
"""A urllib.URLOpener that honors the gnome proxy settings"""
def __init__(self, user_agent=USER_AGENT):
proxies = {}
http_proxy = get_http_proxy_string_from_gconf()
if http_proxy:
proxies = { "http" : http_proxy }
urllib.FancyURLopener.__init__(self, proxies)
self.version = user_agent
def http_error_404(self, url, fp, errcode, errmsg, headers):
logging.debug("http_error_404: %s %s %s" % (url, errcode, errmsg))
raise Url404Error, "404 %s" % url
def http_error_403(self, url, fp, errcode, errmsg, headers):
logging.debug("http_error_403: %s %s %s" % (url, errcode, errmsg))
raise Url403Error, "403 %s" % url
class ShowImageDialog(gtk.Dialog):
"""A dialog that shows a image """
def __init__(self, title, url, loading_img, loading_img_size, missing_img, parent=None):
gtk.Dialog.__init__(self)
# find parent window for the dialog
if not parent:
parent = self.get_parent()
while parent:
parent = w.get_parent()
# missing
self._missing_img = missing_img
self.image_filename = self._missing_img
# image
# loading
pixbuf_orig = gtk.gdk.pixbuf_new_from_file(loading_img)
self.x = self._get_loading_x_start(loading_img_size)
self.y = 0
self.pixbuf_count = 0
pixbuf_buffer = pixbuf_orig.copy()
self.pixbuf_list = []
for f in range((pixbuf_orig.get_width() / loading_img_size) * (pixbuf_orig.get_height() / loading_img_size)):
pixbuf_buffer = pixbuf_orig.subpixbuf(self.x, self.y, loading_img_size, loading_img_size)
self.pixbuf_list.append(pixbuf_buffer)
if self.x == pixbuf_orig.get_width() - loading_img_size:
self.x = self.x = self._get_loading_x_start(loading_img_size)
self.y += loading_img_size
if self.y == pixbuf_orig.get_height():
self.x = self.x = self._get_loading_x_start(loading_img_size)
self.y = 0
else:
self.x += loading_img_size
self.img = gtk.Image()
self.img.set_from_file(loading_img)
self.img.show()
gobject.timeout_add(50, self._update_loading, pixbuf_orig, loading_img_size)
# view port
scroll = gtk.ScrolledWindow()
scroll.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
scroll.add_with_viewport(self.img)
scroll.show()
# box
vbox = gtk.VBox()
vbox.pack_start(scroll)
vbox.show()
# dialog
self.set_transient_for(parent)
self.set_position(gtk.WIN_POS_CENTER_ON_PARENT)
self.get_content_area().add(vbox)
self.add_button(gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE)
self.set_default_size(850,650)
self.set_title(title)
self.connect("response", self._response)
# install urlopener
urllib._urlopener = GnomeProxyURLopener()
# data
self.url = url
def _update_loading(self, pixbuf_orig, loading_img_size):
if not self._finished:
self.img.set_from_pixbuf(self.pixbuf_list[self.pixbuf_count])
if self.pixbuf_count == (pixbuf_orig.get_width() / loading_img_size) * (pixbuf_orig.get_height() / loading_img_size) - 1:
self.pixbuf_count = 0
else:
self.pixbuf_count += 1
return True
def _get_loading_x_start(self, loading_img_size):
if (gtk.settings_get_default().props.gtk_icon_theme_name in ICON_EXCEPTIONS) or (gtk.settings_get_default().props.gtk_fallback_icon_theme in ICON_EXCEPTIONS):
return loading_img_size
else:
return 0
def _response(self, dialog, reponse_id):
self._finished = True
self._abort = True
def run(self):
self.show()
# thread
self._finished = False
self._abort = False
self._fetched = 0.0
self._percent = 0.0
t = threading.Thread(target=self._fetch)
t.start()
# wait for download to finish or for abort
while not self._finished:
time.sleep(0.1)
while gtk.events_pending():
gtk.main_iteration()
# aborted
if self._abort:
return gtk.RESPONSE_CLOSE
# load into icon
try:
pixbuf = gtk.gdk.pixbuf_new_from_file(self.image_filename)
except:
logging.debug("The image format couldn't be determined")
pixbuf = gtk.gdk.pixbuf_new_from_file(self._missing_img)
self.img.set_from_pixbuf(pixbuf)
# and run the real thing
gtk.Dialog.run(self)
def _fetch(self):
"fetcher thread"
logging.debug("_fetch: %s" % self.url)
self.location = tempfile.NamedTemporaryFile()
try:
(screenshot, info) = urllib.urlretrieve(self.url,
self.location.name,
self._progress)
self.image_filename = self.location.name
except (Url403Error, Url404Error), e:
self.image_filename = self._missing_img
except Exception, e:
logging.exception("urlopen error")
self._finished = True
def _progress(self, count, block, total):
"fetcher progress reporting"
logging.debug("_progress %s %s %s" % (count, block, total))
#time.sleep(1)
self._fetched += block
# ensure we do not go over 100%
self._percent = min(self._fetched/total, 1.0)
if __name__ == "__main__":
pkgname = "synaptic"
url = "http://screenshots.ubuntu.com/screenshot/synaptic"
loading = "/usr/share/icons/hicolor/32x32/animations/softwarecenter-loading-installed.gif"
d = ShowImageDialog("Synaptic Screenshot", url, loading, pkgname)
d.run()
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