def test_widget_destroy(self):
# automatically created variable
x = ttk.LabeledScale()
var = x._variable._name
x.destroy()
self.failUnlessRaises(Tkinter.TclError, x.tk.globalgetvar, var)
# manually created variable
myvar = Tkinter.DoubleVar()
name = myvar._name
x = ttk.LabeledScale(variable=myvar)
x.destroy()
self.failUnlessEqual(x.tk.globalgetvar(name), myvar.get())
del myvar
self.failUnlessRaises(Tkinter.TclError, x.tk.globalgetvar, name)
# checking that the tracing callback is properly removed
myvar = Tkinter.IntVar()
# LabeledScale will start tracing myvar
x = ttk.LabeledScale(variable=myvar)
x.destroy()
# Unless the tracing callback was removed, creating a new
# LabeledScale with the same var will cause an error now. This
# happens because the variable will be set to (possibly) a new
# value which causes the tracing callback to be called and then
# it tries calling instance attributes not yet defined.
ttk.LabeledScale(variable=myvar)
if hasattr(sys, 'last_type'):
self.failIf(sys.last_type == Tkinter.TclError)
def test_initialization(self):
# master passing
master = tkinter.Frame(self.root)
x = ttk.LabeledScale(master)
self.assertEqual(x.master, master)
x.destroy()
# variable initialization/passing
passed_expected = (('0', 0), (0, 0), (10, 10), (-1, -1),
(sys.maxint + 1, sys.maxint + 1))
if self.wantobjects:
passed_expected += ((2.5, 2), )
for pair in passed_expected:
x = ttk.LabeledScale(self.root, from_=pair[0])
self.assertEqual(x.value, pair[1])
x.destroy()
x = ttk.LabeledScale(self.root, from_='2.5')
self.assertRaises(ValueError, x._variable.get)
x.destroy()
x = ttk.LabeledScale(self.root, from_=None)
self.assertRaises(ValueError, x._variable.get)
x.destroy()
# variable should have its default value set to the from_ value
myvar = tkinter.DoubleVar(self.root, value=20)
x = ttk.LabeledScale(self.root, variable=myvar)
self.assertEqual(x.value, 0)
x.destroy()
# check that it is really using a DoubleVar
x = ttk.LabeledScale(self.root, variable=myvar, from_=0.5)
self.assertEqual(x.value, 0.5)
self.assertEqual(x._variable._name, myvar._name)
x.destroy()
# widget positionment
def check_positions(scale, scale_pos, label, label_pos):
self.assertEqual(scale.pack_info()['side'], scale_pos)
self.assertEqual(label.place_info()['anchor'], label_pos)
x = ttk.LabeledScale(self.root, compound='top')
check_positions(x.scale, 'bottom', x.label, 'n')
x.destroy()
x = ttk.LabeledScale(self.root, compound='bottom')
check_positions(x.scale, 'top', x.label, 's')
x.destroy()
# invert default positions
x = ttk.LabeledScale(self.root, compound='unknown')
check_positions(x.scale, 'top', x.label, 's')
x.destroy()
x = ttk.LabeledScale(self.root) # take default positions
check_positions(x.scale, 'bottom', x.label, 'n')
x.destroy()
# extra, and invalid, kwargs
self.assertRaises(tkinter.TclError, ttk.LabeledScale, master, a='b')
def test_variable_change(self):
x = ttk.LabeledScale()
x.pack()
x.wait_visibility()
x.update()
curr_xcoord = x.scale.coords()[0]
newval = x.value + 1
x.value = newval
# The following update is needed since the test doesn't use mainloop,
# at the same time this shouldn't affect test outcome
x.update()
self.failUnlessEqual(x.label['text'], newval)
self.failUnless(x.scale.coords()[0] > curr_xcoord)
self.failUnlessEqual(x.scale.coords()[0],
int(x.label.place_info()['x']))
# value outside range
x.value = x.scale['to'] + 1 # no changes shouldn't happen
x.update()
self.failUnlessEqual(x.label['text'], newval)
self.failUnlessEqual(x.scale.coords()[0],
int(x.label.place_info()['x']))
x.destroy()
def test_horizontal_range(self):
lscale = ttk.LabeledScale(from_=0, to=10)
lscale.pack()
lscale.wait_visibility()
lscale.update()
linfo_1 = lscale.label.place_info()
prev_xcoord = lscale.scale.coords()[0]
self.failUnlessEqual(prev_xcoord, int(linfo_1['x']))
# change range to: from -5 to 5. This should change the x coord of
# the scale widget, since 0 is at the middle of the new
# range.
lscale.scale.configure(from_=-5, to=5)
# The following update is needed since the test doesn't use mainloop,
# at the same time this shouldn't affect test outcome
lscale.update()
curr_xcoord = lscale.scale.coords()[0]
self.failUnless(prev_xcoord != curr_xcoord)
# the label widget should have been repositioned too
linfo_2 = lscale.label.place_info()
self.failUnlessEqual(lscale.label['text'], 0)
self.failUnlessEqual(curr_xcoord, int(linfo_2['x']))
# change the range back
lscale.scale.configure(from_=0, to=10)
self.failUnless(prev_xcoord != curr_xcoord)
self.failUnlessEqual(prev_xcoord, int(linfo_1['x']))
lscale.destroy()
def test_variable_change(self):
x = ttk.LabeledScale(self.root)
x.pack()
x.wait_visibility()
x.update()
curr_xcoord = x.scale.coords()[0]
newval = x.value + 1
x.value = newval
# The following update is needed since the test doesn't use mainloop,
# at the same time this shouldn't affect test outcome
x.update()
self.assertEqual(x.label['text'],
newval if self.wantobjects else str(newval))
self.assertGreater(x.scale.coords()[0], curr_xcoord)
self.assertEqual(x.scale.coords()[0],
int(x.label.place_info()['x']))
# value outside range
if self.wantobjects:
conv = lambda x: x
else:
conv = int
x.value = conv(x.scale['to']) + 1 # no changes shouldn't happen
x.update()
self.assertEqual(conv(x.label['text']), newval)
self.assertEqual(x.scale.coords()[0],
int(x.label.place_info()['x']))
x.destroy()
def test_widget_destroy(self):
x = ttk.LabeledScale()
var = x._variable._name
x.destroy()
self.assertRaises(Tkinter.TclError, x.tk.globalgetvar, var)
myvar = Tkinter.DoubleVar()
name = myvar._name
x = ttk.LabeledScale(variable=myvar)
x.destroy()
if x.tk.wantobjects():
self.assertEqual(x.tk.globalgetvar(name), myvar.get())
else:
self.assertEqual(float(x.tk.globalgetvar(name)), myvar.get())
del myvar
self.assertRaises(Tkinter.TclError, x.tk.globalgetvar, name)
myvar = Tkinter.IntVar()
x = ttk.LabeledScale(variable=myvar)
x.destroy()
ttk.LabeledScale(variable=myvar)
if hasattr(sys, 'last_type'):
self.assertNotEqual(sys.last_type, Tkinter.TclError)
def test_initialization_no_master(self):
# no master passing
with swap_attr(tkinter, '_default_root', None), \
swap_attr(tkinter, '_support_default_root', True):
try:
x = ttk.LabeledScale()
self.assertIsNotNone(tkinter._default_root)
self.assertEqual(x.master, tkinter._default_root)
self.assertEqual(x.tk, tkinter._default_root.tk)
x.destroy()
finally:
destroy_default_root()
def test_resize(self):
x = ttk.LabeledScale()
x.pack(expand=True, fill='both')
x.wait_visibility()
x.update()
width, height = x.master.winfo_width(), x.master.winfo_height()
width_new, height_new = width * 2, height * 2
x.value = 3
x.update()
x.master.wm_geometry('%dx%d' % (width_new, height_new))
self.assertEqual(int(x.label.place_info()['x']), x.scale.coords()[0])
x.master.wm_geometry('%dx%d' % (width, height))
x.destroy()
def test_horizontal_range(self):
lscale = ttk.LabeledScale(from_=0, to=10)
lscale.pack()
lscale.wait_visibility()
lscale.update()
linfo_1 = lscale.label.place_info()
prev_xcoord = lscale.scale.coords()[0]
self.assertEqual(prev_xcoord, int(linfo_1['x']))
lscale.scale.configure(from_=-5, to=5)
lscale.update()
curr_xcoord = lscale.scale.coords()[0]
self.assertNotEqual(prev_xcoord, curr_xcoord)
linfo_2 = lscale.label.place_info()
self.assertEqual(lscale.label['text'], 0 if lscale.tk.wantobjects() else '0')
self.assertEqual(curr_xcoord, int(linfo_2['x']))
lscale.scale.configure(from_=0, to=10)
self.assertNotEqual(prev_xcoord, curr_xcoord)
self.assertEqual(prev_xcoord, int(linfo_1['x']))
lscale.destroy()
def test_variable_change(self):
x = ttk.LabeledScale()
x.pack()
x.wait_visibility()
x.update()
curr_xcoord = x.scale.coords()[0]
newval = x.value + 1
x.value = newval
x.update()
self.assertEqual(x.label['text'], newval if x.tk.wantobjects() else str(newval))
self.assertGreater(x.scale.coords()[0], curr_xcoord)
self.assertEqual(x.scale.coords()[0], int(x.label.place_info()['x']))
if x.tk.wantobjects():
conv = lambda x: x
else:
conv = int
x.value = conv(x.scale['to']) + 1
x.update()
self.assertEqual(conv(x.label['text']), newval)
self.assertEqual(x.scale.coords()[0], int(x.label.place_info()['x']))
x.destroy()
def test_initialization(self):
x = ttk.LabeledScale()
self.assertEqual(x.master, Tkinter._default_root)
x.destroy()
master = Tkinter.Frame()
x = ttk.LabeledScale(master)
self.assertEqual(x.master, master)
x.destroy()
passed_expected = (('0', 0),
(0, 0),
(10, 10),
(-1, -1),
(sys.maxint + 1, sys.maxint + 1))
if x.tk.wantobjects():
passed_expected += ((2.5, 2),)
for pair in passed_expected:
x = ttk.LabeledScale(from_=pair[0])
self.assertEqual(x.value, pair[1])
x.destroy()
x = ttk.LabeledScale(from_='2.5')
self.assertRaises(ValueError, x._variable.get)
x.destroy()
x = ttk.LabeledScale(from_=None)
self.assertRaises(ValueError, x._variable.get)
x.destroy()
myvar = Tkinter.DoubleVar(value=20)
x = ttk.LabeledScale(variable=myvar)
self.assertEqual(x.value, 0)
x.destroy()
x = ttk.LabeledScale(variable=myvar, from_=0.5)
self.assertEqual(x.value, 0.5)
self.assertEqual(x._variable._name, myvar._name)
x.destroy()
def check_positions(scale, scale_pos, label, label_pos):
self.assertEqual(scale.pack_info()['side'], scale_pos)
self.assertEqual(label.place_info()['anchor'], label_pos)
x = ttk.LabeledScale(compound='top')
check_positions(x.scale, 'bottom', x.label, 'n')
x.destroy()
x = ttk.LabeledScale(compound='bottom')
check_positions(x.scale, 'top', x.label, 's')
x.destroy()
x = ttk.LabeledScale(compound='unknown')
check_positions(x.scale, 'top', x.label, 's')
x.destroy()
x = ttk.LabeledScale()
check_positions(x.scale, 'bottom', x.label, 'n')
x.destroy()
self.assertRaises(Tkinter.TclError, ttk.LabeledScale, a='b')
return