On Sun, 2009-11-01 at 06:26 +0100, Joel Juvenal Rivera Rivera wrote:
> I hope some one coud help me, i can't draw a spin button in a TreeView,
> im using CellRendererSpin but how do i draw "the widget" not just the
> text o something like that (in the CellRendererText for example).
I used CellRendererSpin the following way - hope it helps a bit:
class CellRendererSpinFixed(gtk.CellRendererSpin):
# the whole class is just a workaround for PyGTK bug 492196
__gtype_name__ = 'CellRendererSpinFixed'
def __init__(self):
gtk.CellRendererSpin.__init__(self)
def do_start_editing(self, event, treeview, path, background_area,
cell_area, flags):
if not self.get_property('editable'):
return
spin = gtk.SpinButton(self.get_property('adjustment'))
spin.connect('editing-done', self._editing_done, path)
spin.connect('key-press-event', self._key_press_event, path)
spin.connect('button-press-event', self._button_press_event)
spin.show()
spin.grab_focus()
return spin
def _editing_done(self, spin, path):
self.emit('edited', path, spin.get_property('value'))
def _key_press_event(self, spin, event, path):
if event.type == gtk.gdk.KEY_PRESS:
if gtk.gdk.keyval_name(event.keyval) == 'Up':
spin.spin(gtk.SPIN_STEP_FORWARD)
return True
if gtk.gdk.keyval_name(event.keyval) == 'Down':
spin.spin(gtk.SPIN_STEP_BACKWARD)
return True
def _button_press_event(self, spin, event):
# avoid unwanted 'editing done' if the user clicks on spin
arrows too
fast, see PyGTK bug 492196 for details
if event.type == gtk.gdk._2BUTTON_PRESS or event.type ==
gtk.gdk._3BUTTON_PRESS:
return True # we have already received all the clicks,
throw away
additional signals telling it's double/tripleclick
---
if column_type == 'spin':
adjustment = gtk.Adjustment(lower=args['lower'],
upper=args['upper'],
step_incr=1, page_incr=10)
renderer = CellRendererSpinFixed() # replace with
regular
cellrendererspin when bug 492196 gets finally fixed
renderer.set_property('adjustment', adjustment)
renderer.set_property('editable', True)
renderer.set_property('digits', args['digits'])
renderer.connect('edited', self._spin_update_model,
len(self._model_columns))
column = gtk.TreeViewColumn(title, renderer,
text=len(self._model_columns))
column.set_property('expand', False)
column.set_property('reorderable', True)
column.set_property('resizable', True)
if args['digits']:
self._model_columns.append(gobject.TYPE_FLOAT)
else:
self._model_columns.append(gobject.TYPE_INT)
self._view_columns.append(column)
return
---
def _spin_update_model(self, renderer, path, new_text, column):
"""
Updates the model whenever the spin value changes.
"""
digits = renderer.get_property('digits')
if digits > 0:
try:
new_value = float(new_text)
except:
return
(integral, decimal) = new_text.split('.')
new_text = integral + '.' + decimal[0:digits]
new_value = float(new_text)
else:
try:
new_value = int(float(new_text)) # direct
conversion of float-string
to int raises an error
except:
return
self.model[self.sortable_model.convert_path_to_child_path(path)][column]
= new_value
---
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