As an exercise in preparation for bigger things, I am trying to create a
custom widget that is a gtk.Entry with an added label. I borrowed
liberally from examples, but I am not aware of any examples that do quite
what I am trying to do. I can make this widget work by subclassing gtk.Bin
and adding the entry as a child, but what I really want is to have
a "self-contained" widget. I think that I am close, but I have two
problems (that I know about) that have me completely stumped. The first is
that I can't get the label to appear, although there appears to be space
for it. The second is that the entry does not resize when I resize the
window. Any suggestions would be greatly appreciated. I'm hoping that
creating custom widgets gets easier after the first one.
--
Jeffrey Barish
import gtk
import pygtk
import gobject
class LabelEntry(gtk.Entry):
__gtype_name__ = 'LabelEntry'
__gproperties__ = {
'label': (str, 'Entry Label', 'The label for the entry',
'', gobject.PARAM_READWRITE)
}
def __init__(self, label=None):
gtk.Entry.__init__(self)
gtk.widget_push_composite_child()
self.label = gobject.new(gtk.Label, visible=True, xalign=0, yalign=0.5)
gtk.widget_pop_composite_child()
if label is not None:
self.set_property('label', label)
def do_size_request(self, requisition):
label_req = gtk.gdk.Rectangle(0, 0, *self.label.size_request())
requisition.width = label_req.width + 100 + 6
requisition.height = 26
def do_size_allocate(self, allocation):
label_req = gtk.gdk.Rectangle(0, 0, *self.label.get_child_requisition())
label_alloc = gtk.gdk.Rectangle()
label_alloc.x = allocation.x
label_alloc.y = allocation.y
label_alloc.width = label_req.width
label_alloc.height = allocation.height
self.label.size_allocate(label_alloc)
self_alloc = gtk.gdk.Rectangle()
self_alloc.x = allocation.x + label_alloc.width + 6
self_alloc.y = allocation.y
self_alloc.width = allocation.width - label_alloc.width - 6
self_alloc.height = allocation.height
self.allocation = self_alloc
def do_set_property(self, prop, value):
if prop.name == 'label':
self.label.set_text(value)
def do_get_property(self, prop):
if prop.name == 'label':
return self.label.get_text()
if __name__ == '__main__':
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.set_size_request(350, 200)
window.set_title("LabelEntry Test")
window.connect('destroy', gtk.main_quit)
le = LabelEntry('Entry:')
window.add(le)
window.show_all()
gtk.main()
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