hi
I am trying to change the value in the slider bar but it is allowing to
change the value within the range given in the
adjustment. if the current values are 1,2,4,5,6,7 then i want slider
should show 1,2,4,8,16,32,64.how can i do this any one can help me out this
problem? even the set_value(newvalue) function changes values within the lower
and upper values but that changes are also not displayed on the slider.
Thanks,
Sibtey
my code :
import pygtk
pygtk.require('2.0')
import gtk
class Scale(object):
"""A scale that adheres to increment steps"""
def __init__(self,x):
self.a = x
self.set_update_policy(gtk.UPDATE_CONTINUOUS)
self.set_size_request(150,35)
self.connect("change-value", self.adjust)
def adjust(self, range, scroll, value):
adj = self.get_adjustment()
lower = adj.get_property('lower')
upper = adj.get_property('upper')
incr = adj.get_property('step-increment')
value -= (value % incr)
xx = min(max(lower, value), upper)
if int(value) == 7:
a = 64
elif int(value) == 6:
a = 32
elif int(value) == 5:
a = 16
elif int(value) == 4:
a = 8
elif int(value) == 3:
a = 4
elif int(value) == 2:
a = 2
elif int(value) == 1:
a = 1
range.set_value(a)
print a, self.get_value()
class HScale(gtk.HScale, Scale):
def __init__(self, x, *args):
gtk.HScale.__init__(self, *args)
Scale.__init__(self,x)
class RangeWidgets:
def __init__(self):
# Standard window-creating stuff
self.window = gtk.Window (gtk.WINDOW_TOPLEVEL)
self.window.connect("destroy", lambda w: gtk.main_quit())
self.window.set_title("range controls")
box1 = gtk.VBox(False, 0)
# adj2 = gtk.Adjustment.set_all(1.0,1.0,64.0,1.0,1.0,2.0)
adj2 = gtk.Adjustment(1.0,1.0,7.0,1.0,1.0,0.0)
# adj2.connect("value_changed", self.cb_digits_scale)
scale = HScale('k', adj2)
scale.set_digits(0)
box1.pack_start(scale, True, True, 0)
scale.show()
box1.show()
self.window.add(box1)
self.window.show()
def main():
gtk.main()
return 0
if __name__ == "__main__":
RangeWidgets()
main()
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