def UpdateMagnification(self):
# Total magnification
mag = self._mpp_screen / self._microscope_view.mpp.value
label = u"Mag: × %s" % units.readable_str(
units.round_significant(mag, 3))
# Gather all different image mpp values
mpps = set()
for im, stream in self._microscope_view.stream_tree.getImages():
try:
if hasattr(stream, 'mpp'): # im is a tuple of tuple of tiles
mpps.add(stream.mpp.min)
else:
md = im.metadata
mpps.add(md[model.MD_PIXEL_SIZE][0])
except KeyError:
pass
# If there's only one mpp value (i.e. there's only one image, or they
# all have the same mpp value), indicate the digital zoom.
if len(mpps) == 1:
mpp_im = mpps.pop()
# mag_im = self._mpp_screen / mpp_im # as if 1 im.px == 1 sc.px
mag_dig = mpp_im / self._microscope_view.mpp.value
label += u" (Digital: × %s)" % units.readable_str(
units.round_significant(mag_dig, 2))
if self.bottom_legend:
self.bottom_legend.set_mag_label(label)
def UpdateHFWLabel(self):
""" Physical width of the display"""
if not self._microscope_view:
return
hfw = self._microscope_view.mpp.value * self.GetClientSize()[0]
hfw = units.round_significant(hfw, 4)
label = u"HFW: %s" % units.readable_str(hfw, "m", sig=3)
self.bottom_legend.set_hfw_label(label)
def UpdateMagnification(self):
# Total magnification
mag = self._mpp_screen / self._microscope_view.mpp.value
label = u"Mag: × %s" % units.readable_str(units.round_significant(mag, 3))
# Gather all different image mpp values
mpps = set()
for im in self._microscope_view.stream_tree.getImages():
try:
mpps.add(im.metadata[model.MD_PIXEL_SIZE][0])
except KeyError:
pass
# If there's only one mpp value (i.e. there's only one image, or they
# all have the same mpp value), indicate the digital zoom.
if len(mpps) == 1:
mpp_im = mpps.pop()
# mag_im = self._mpp_screen / mpp_im # as if 1 im.px == 1 sc.px
mag_dig = mpp_im / self._microscope_view.mpp.value
label += u" (Digital: × %s)" % units.readable_str(units.round_significant(mag_dig, 2))
self.bottom_legend.set_mag_label(label)
def test_to_string_pretty(self):
values = [
0.000000041003,
0.0051,
0.014,
0.39,
0.230234543545,
]
for sig in [2, 4, 6]: # (None, 0, 1, 2, 4, 8):
for v in values:
self.assertEqual(units.round_significant(v, sig),
float(units.to_string_pretty(v, sig, "s")))
def test_round_significant(self):
# (input) (expected output)
values = [((1, 1), 1),
((-1.234, 1), -1),
((-1234, 1), -1000),
((1600, 1), 2000),
((-1600, 1), -2000),
((0.0001236, 3), 0.000124),
((0, 5), 0),
((4.375479375074184e-6, 3), 4.38e-6),
]
for (i, eo) in values:
o = units.round_significant(*i)
self.assertEquals(o, eo,
u"%f to %d figures = %f should be %f" % (i[0], i[1], o, eo))
def test_round_significant(self):
# (input) (expected output)
values = [((1, 1), 1),
((-1.234, 1), -1),
((-1234, 1), -1000),
((1600, 1), 2000),
((-1600, 1), -2000),
((0.0001236, 3), 0.000124),
((0, 5), 0),
((4.375479375074184e-6, 3), 4.38e-6),
]
for (i, eo) in values:
o = units.round_significant(*i)
self.assertEquals(o, eo,
u"%f to %d figures = %f should be %f" % (i[0], i[1], o, eo))
def test_to_string_pretty(self):
values = [
0.000000041003,
0.0051,
0.014,
0.39,
0.230234543545,
]
for sig in [2, 4, 6]: # (None, 0, 1, 2, 4, 8):
for v in values:
self.assertEqual(
units.round_significant(v, sig),
float(units.to_string_pretty(v, sig, "s"))
)
def UpdateMagnification(self):
# TODO: shall we use the real density of the screen?
# We could use real density but how much important is it?
mppScreen = 0.00025 # 0.25 mm/px
label = u"Mag: "
# three possibilities:
# * no image => total mag (using current mpp)
# * all images have same mpp => mag instrument * mag digital
# * >1 mpp => total mag
# get all the mpps
mpps = set()
for im in self._microscope_view.stream_tree.getImages():
try:
mpps.add(im.metadata[model.MD_PIXEL_SIZE][0])
except KeyError:
pass
if len(mpps) == 1:
# two magnifications
im_mpp = mpps.pop()
magIm = mppScreen / im_mpp # as if 1 im.px == 1 sc.px
if magIm >= 1:
label += u"×" + units.readable_str(
units.round_significant(magIm, 3))
else:
label += u"÷" + units.readable_str(
units.round_significant(1.0 / magIm, 3))
magDig = im_mpp / self._microscope_view.mpp.value
if magDig >= 1:
label += u" ×" + units.readable_str(
units.round_significant(magDig, 3))
else:
label += u" ÷" + units.readable_str(
units.round_significant(1.0 / magDig, 3))
else:
# one magnification
mag = mppScreen / self._microscope_view.mpp.value
if mag >= 1:
label += u"×" + units.readable_str(
units.round_significant(mag, 3))
else:
label += u"÷" + units.readable_str(
units.round_significant(1.0 / mag, 3))
self.legend.set_mag_label(label)
def UpdateMagnification(self):
# TODO: shall we use the real density of the screen?
# We could use real density but how much important is it?
mppScreen = 0.00025 # 0.25 mm/px
label = u"Mag: "
# three possibilities:
# * no image => total mag (using current mpp)
# * all images have same mpp => mag instrument * mag digital
# * >1 mpp => total mag
# get all the mpps
mpps = set()
for im in self._microscope_view.stream_tree.getImages():
try:
mpps.add(im.metadata[model.MD_PIXEL_SIZE][0])
except KeyError:
pass
if len(mpps) == 1:
# two magnifications
im_mpp = mpps.pop()
magIm = mppScreen / im_mpp # as if 1 im.px == 1 sc.px
if magIm >= 1:
label += u"×" + units.readable_str(units.round_significant(magIm, 3))
else:
label += u"÷" + units.readable_str(units.round_significant(1.0 / magIm, 3))
magDig = im_mpp / self._microscope_view.mpp.value
if magDig >= 1:
label += u" ×" + units.readable_str(units.round_significant(magDig, 3))
else:
label += u" ÷" + units.readable_str(units.round_significant(1.0 / magDig, 3))
else:
# one magnification
mag = mppScreen / self._microscope_view.mpp.value
if mag >= 1:
label += u"×" + units.readable_str(units.round_significant(mag, 3))
else:
label += u"÷" + units.readable_str(units.round_significant(1.0 / mag, 3))
self.legend.set_mag_label(label)
