On 14/11/2007, at 2:46 PM, Richard Procter wrote:
Hi All,
I need a gtk.MenuToolButton that contains a gtk.ToggleButton,
not a gtk.Button.
Has anyone managed to create such a beast purely in python?
This does this trick, but it's a hack. Better would be to reimplement
gtk.MenuToolButton by subclassing gtk.ToolItem. Even better
would be to parameterise gtk.ToolButton to use a given button widget,
but I don't have time to wade through the C.
regards,
Richard
class MenuToolToggleButton(gtk.MenuToolButton):
""" This hack provides a MenuToolButton that toggles, without
having to code our own replacement or touch GTK itself. It fondles
the MenuToolButton's innards, so YMMV. """
assert gtk.gtk_version == (2,8,17) # known to run
__gsignals__ = {
'toggled': (gobject.SIGNAL_RUN_LAST,
gobject.TYPE_NONE,
())
}
def _reconfiguring(self, dummy):
""" Our proxy_button would be destroyed if we didn't whisk it
to saftey here, before the gtk.MenuToolButton explicitly
destroys its
parent """
parent = self.proxy_button.get_parent()
if parent: parent.remove(self.proxy_button)
def _reconfigured(self, dummy):
""" The MenuToolButton has configured its button; snaffle
this for ours """
def copy_button_properties(dest, src):
assert isinstance(src, gtk.Button)
assert isinstance(dest, src.__class__)
props = [p for p in gobject.list_properties(src)
if (p.flags & gobject.PARAM_WRITABLE and
p.flags & gobject.PARAM_READABLE and
p.owner_type == gtk.Button.__gtype__)]
for prop in props:
dest.set_property(prop.name, src.get_property
(prop.name))
def adopt_child(dest, src):
if dest.get_child():
dest.remove(dest.get_child())
child = src.get_child()
if child:
src.remove(child)
dest.add(child)
copy_button_properties(self.proxy_button, self.subject_button)
adopt_child(self.proxy_button, self.subject_button)
if self.proxy_button.get_parent() is None:
self.get_child().add(self.proxy_button)
def _on_proxy_click(self, proxy, *args): self.emit('clicked',
*args)
def _on_proxy_toggled(self, proxy, *args): self.emit('toggled',
*args)
def __init__(self, stock_id):
gtk.MenuToolButton.__init__(self, stock_id=stock_id)
box = self.get_child()
self.subject_button = box.get_children()[0] # keep it alive
box.remove(self.subject_button)
self.proxy_button = gtk.ToggleButton()
self.proxy_button.show_all()
self.proxy_button.connect('clicked', self._on_proxy_click)
self.proxy_button.connect('toggled', self._on_proxy_toggled)
self.connect('toolbar-reconfigured', self._reconfiguring)
self.connect_after('toolbar-reconfigured', self._reconfigured)
gobject.type_register(MenuToolToggleButton)
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