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Revision as of 20:53, 30 August 2012 by Manuq (talk | contribs)
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Manuq started the port of the shell branching the hippo removal. The main issues were identified by Daniel Drake some months ago and fortunately most of them are fixed at this point.

Daniel Narvaez set up a sugar-build branch to make the port. To test:

git clone git://git.sugarlabs.org/~dnarvaez/sugar-build/manuqs-shell-port.git

That is sugar-build with this sugar components branched:




Using gtk_container_foreach or [ http://developer.gnome.org/gtk3/3.4/GtkContainer.html#gtk-container-foreach gtk_container_forall] does expect the callback data to be passed in Python, it does work in a subclassed container due to Carlos fix in the GtkCallback annotations.

gtk_clipboard_set_with_data not introspected

In the annotations it is marked as non-introspectable.


- check with pygobject devs if the above statement is still the case

It seems like functions with multiple callbacks are still unsupported in pygi. I opened https://bugzilla.gnome.org/show_bug.cgi?id=682604 but unless someone suggest a way to not break API perhaps we should just add our own sugar_clipboard_set_data using closures for now --dnarvaez


Is marked as non-introspectable in the annotations.

>>> from gi.repository import Gdk
>>> Gdk.property_change
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/erikos/sources/manuqs-shell-port/install/lib/python2.7/site-packages/gi/module.py", line 266, in __getattr__
    return getattr(self._introspection_module, name)
  File "/home/erikos/sources/manuqs-shell-port/install/lib/python2.7/site-packages/gi/module.py", line 115, in __getattr__
    self.__name__, name))
AttributeError: 'gi.repository.Gdk' object has no attribute 'property_change'

We have a wrapper for this in sugar-toolkit-gtk3 --dnarvaez


The gdk_property_get annotations mark it as introspectable.

Not working:

def _property_get_trapped(window, prop, prop_type):

    prop_atom = Gdk.Atom.intern(prop, False)
    type_atom = Gdk.Atom.intern(prop_type, False)

    logging.warning("get prop %s %s %s", window, prop_atom, type_atom)
    prop_info = Gdk.property_get(window, prop_atom, type_atom, 0, 9999, False)
TypeError: Could not caller allocate argument 6 of callable property_get

Maybe add to gdkwrapper in sugar-toolkit-gtk3? --dnarvaez

Palettes with Menus

Palettes can not mix both Menus and Widgets. Gonzalo has implemented a SugarMenuItem which can be used instead.

Icon/EventIcon: badge is not drawn at the correct position

Filed as SL #3835


Changes in the theme to adopt to:

Port hardcoded styles to the CSS stylesheet

For example in sugar/extensions/cpsection/network/view.py we have things like:

        label_server = gtk.Label(_('Server:'))
        label_server.set_alignment(1, 0.5)

Palettes can't include menu and widgets at the same time

We can use anything like this:

class SugarMenuItem(gtk.EventBox):

    __gsignals__ = {
        'clicked': (gobject.SIGNAL_RUN_FIRST, None, [])

    def __init__(self, icon_name, label_text):
        self._sensitive = True
        vbox = gtk.VBox()
        hbox = gtk.HBox()
        self.icon = Icon()
        self.icon.props.icon_name = icon_name
        hbox.pack_start(self.icon, expand=False, fill=False,
        align = gtk.Alignment(xalign=0.0, yalign=0.5, xscale=0.0, yscale=0.0)
        text = '<span foreground="%s">' % style.COLOR_WHITE.get_html() + \
                    label_text + '</span>'
        self.label = gtk.Label()
        hbox.pack_start(align, expand=True, fill=True,
        vbox.pack_start(hbox, expand=False, fill=False,
        self.id_bt_release_cb = self.connect('button-release-event',
        self.id_enter_notify_cb = self.connect('enter-notify-event',
        self.id_leave_notify_cb = self.connect('leave-notify-event',
        self.modify_bg(gtk.STATE_NORMAL, style.COLOR_BLACK.get_gdk_color())

    def __button_release_cb(self, widget, event):

    def __enter_notify_cb(self, widget, event):

    def __leave_notify_cb(self, widget, event):
        self.modify_bg(gtk.STATE_NORMAL, style.COLOR_BLACK.get_gdk_color())

    def set_icon(self, icon_name):
        self.icon.props.icon_name = icon_name

    def set_label(self, label_text):
        text = '<span foreground="%s">' % style.COLOR_WHITE.get_html() + \
                    label_text + '</span>'

    def set_sensitive(self, sensitive):
        if self._sensitive == sensitive:

        self._sensitive = sensitive
        if sensitive:
            self.modify_bg(gtk.STATE_NORMAL, style.COLOR_BLACK.get_gdk_color())

And add them to a vbox:

        # TODO: private!!!
        self._play_pause_button = SugarMenuItem('player_play',
                _('Say selected text'))
        self._play_pause_button.connect('clicked', self.__play_clicked_cb)

To do the SegurMenuItem take all the width in the palette, we need set the border_width in _content to zero, but that is a private member. Then we need to look if we add a method to set the it, or change the api to make the first container (where is the menu today) useful for other type of widgets.

In Manuq branch, palettes are blinking when mouse is over the icon.


 Traceback (most recent call last):
   File "/home/manuq/prog/manuqs-shell-port/install/lib/python2.7/site-packages/sugar3/graphics/palette.py", line
     or isinstance(self._widget, _PaletteWindowWidget)

A handful of NMClient issues

See http://mail.gnome.org/archives/python-hackers-list/2011-August/msg00003.html and the other posts in the thread. Some problems resolved, some probably still pending.

Drag-and-drop in home view, random layout

Partially done in commit 204899e2. Pending issue: the activity icon is not being displayed while dragging.

 (sugar-session:13647): Gtk-CRITICAL **: gtk_drag_source_set_icon_pixbuf: assertion `site != NULL' failed

Other issues

  • activity launch icon in the frame does not stop fading in and out, like loading
  • widgets like icons and texts have grey background instead of black (toolbar-grey) - this is because of a change in gtk (seen in Browse too)


Custom tree model for journal

Fix from: Manuel Quiñones, Simon Schampijer, Gonzalo Odiard

Custom tree model sample: http://dev.laptop.org/~manuq/shell-port/test_custom_treemodel-gtk3.py

Having trouble reimplementing this. See http://mail.gnome.org/archives/python-hackers-list/2011-December/msg00010.html this bug might be related see 8f31e85db1392eb7222593fc0d05144c2bca06a3 in pygobject.

Gonzalo provided an initial patch, and Manuq worked over it.

key grabber

Fix from: Simon Schampijer - grab_keys needs to be introspectable, patch - is_modifier does not allow to pass no mask anymore, has to be something like "is_modifier(keycode, mask=Gdk.ModifierType.MOD1_MASK)"

Xkl.ConfigRec does not have set_model() method

Fix from: Manuel Quiñones, Sergey V. Udaltsov

This should be called in the setup keyboard at the startup. setup_keyboard_cb in sugar/bin/sugar-session . Reported in pygobject as: https://bugzilla.gnome.org/show_bug.cgi?id=681566

Seems that libxklavier needs a setter. Reported to libxklavier as https://bugzilla.freedesktop.org/show_bug.cgi?id=53547

Owner icon allocation issue

Fix from: Simon Schampijer in commit cd29d065.

Port the gstreamer code to pygi

Fix from: Daniel Narvaez in commit f74489e6 .

Remove resize grips

Fix from: Manuel Quiñones

Resize grip has been moved from GtkStatusbar to GtkWindow. See "Resize grip" section of the GTK+2 > GTK+3 porting guide.

Done in commit 3efb87f3.

Custom Icon cell renderer

Fix from: Manuel Quiñones

sugar3.graphics.icon.CellRendererIcon is based on pygtks GenericCellRenderer - needs to be ported

gconf_client_get_list not introspectable

Workaround from: Daniel Drake

The annotations mark it as non-introspectale.

opened an upstream bug: https://bugzilla.gnome.org/show_bug.cgi?id=681433

similar boxed types fix: https://bugzilla.gnome.org/show_bug.cgi?id=613247

The keyboard is not set up yet because of this as is being called in setup_keyboard_cb in sugar/bin/sugar-session .


Custom TreeModelSort for home list view

Fix from: Simon Feltman, Manuel Quiñones

Can't inherit GtkTreeModelSort and pass a model to the parent constructor. Filed as: https://bugzilla.gnome.org/show_bug.cgi?id=681477

Working testcase for pygtk: http://dev.laptop.org/~manuq/test_listmodel2_gtk2.py

Testcase that shows the issue in PyGi: http://dev.laptop.org/~manuq/test_listmodel2_gtk3.py


  • can be made to work by passing keyword arguments e.g. "Gtk.TreeModelSort.__init__(self, model=self._model_filter)"

can't call gdk_window_set_user_data()

In the latest implementation we don't use set_user_data anymore AFAIK. http://mail.gnome.org/archives/python-hackers-list/2011-September/msg00006.html

do_forall not working in pygobject

Fix from: Tomeu Vizoso, John Palmieri, Carlos Garnacho


cant call gdkwindow.raise()

Fix from: Martin Pitt


can not listen to signals in subclassed subclasses

Fix from: Carlos Garnacho

ActivityIcon.do_draw never called, see http://bugs.sugarlabs.org/ticket/3386


set_data/get_data not available anymore

Fix in toolkit-gtk3 from: Simon Schampijer

More background info in: https://bugzilla.gnome.org/show_bug.cgi?id=641944



Fix from: Manuel Quiñones

This is how Anaconda is using libxklavier in Python (found when coming across this bug, Colin enabled introspection for libxklavier).

You have to use Xkl.Engine.get_instance(display) instead of the constructor. Manuq made sure the API we use is there. This testcase was useful.