def copy_mpl_line1(self):
# TODO: make more general. Not allways is first line of this type!
l = mpl_Line(self.x_values,
self.y_values,
marker='o',
drawstyle='steps-post',
color=self.color)
return l
def copy_mpl_line1(self):
# TODO: make more general. Not allways is first line of this type!
l = mpl_Line(
self.x_values, self.y_values, marker='o',
drawstyle='steps-post', color=self.color)
return l
def _draw_cross(self, event, select_bg=None):
def crop_coordinate(c_axes, flag):
"""
It crops the coordinate and returns two values:
- coordinate in axes format <0, 1>
- coordinate in data format
c_axes -- cordinate in axes format
flag -- flag says which coordinate is required, possible
values: 'x' or 'y'.
returns (<0,1>, <min_value, max_value>)
"""
idx = 0 if flag == 'x' else 1
if c_axes < 0:
return (0, self.__convert_axes_to_data(0, 0)[idx])
elif c_axes > 1:
return (1, self.__convert_axes_to_data(1, 1)[idx])
else:
return (c_axes,
self.__convert_axes_to_data(c_axes, c_axes)[idx])
def format_value(value, formatter):
if value is not None and isinstance(formatter, mpl_FuncFormatter):
return formatter.format_data(value)
else:
return str(value)
if not self.mouse_on_legend and \
(self.xypress is None or select_bg is not None):
if self.cross_bg is None:
self.cross_bg = self.figure.canvas.copy_from_bbox(self.bbox)
if select_bg is not None:
self.figure.canvas.restore_region(select_bg)
elif self.cross_bg is not None:
self.figure.canvas.restore_region(self.cross_bg)
inv = self.transAxes.inverted()
x, y = inv.transform((event.x, event.y))
(x, xdata) = crop_coordinate(x, 'x')
(y, ydata) = crop_coordinate(y, 'y')
xtext = format_value(xdata, self.xaxis.get_major_formatter())
ytext = format_value(ydata, self.yaxis.get_major_formatter())
# the coefficient 7 is good result from an experiment :)
xtext_pos = -7 * len(xtext) - 10 if x > 0.5 else 10
ytext_pos = -20 if y > 0.5 else 30
if not self.xlock:
l1 = mpl_Line(
[x, x], [0, 1], c="#ff0000", lw=1,
transform=self.transAxes, figure=self.figure)
self.draw_artist(l1)
a1 = mpl_Annotation(
xtext,
xy=(x, y), xycoords='axes fraction',
xytext=(xtext_pos, ytext_pos),
textcoords='offset points',
bbox=dict(boxstyle="round", fc="#ffff00"))
a1.set_transform(mpl_IdentityTransform())
self._set_artist_props(a1)
self.draw_artist(a1)
if not self.ylock:
l2 = mpl_Line(
[0, 1], [y, y], c="#ff0000", lw=1,
transform=self.transAxes, figure=self.figure)
self.draw_artist(l2)
if self.xlock:
ytext_pos = -20 if y > 0.5 else 10
else:
ytext_pos -= 20
a2 = mpl_Annotation(
ytext,
xy=(x, y), xycoords='axes fraction',
xytext=(xtext_pos, ytext_pos),
textcoords='offset points',
bbox=dict(boxstyle="round", fc="#ffff00"))
a2.set_transform(mpl_IdentityTransform())
self._set_artist_props(a2)
self.draw_artist(a2)
self.figure.canvas.blit(self.bbox)
def _draw_cross(self, event, select_bg=None):
def crop_coordinate(c_axes, flag):
"""
It crops the coordinate and returns two values:
- coordinate in axes format <0, 1>
- coordinate in data format
c_axes -- cordinate in axes format
flag -- flag says which coordinate is required, possible
values: 'x' or 'y'.
returns (<0,1>, <min_value, max_value>)
"""
idx = 0 if flag == 'x' else 1
if c_axes < 0:
return (0, self.__convert_axes_to_data(0, 0)[idx])
elif c_axes > 1:
return (1, self.__convert_axes_to_data(1, 1)[idx])
else:
return (c_axes, self.__convert_axes_to_data(c_axes,
c_axes)[idx])
def format_value(value, formatter):
if value is not None and isinstance(formatter, mpl_FuncFormatter):
return formatter.format_data(value)
else:
return str(value)
if not self.mouse_on_legend and \
(self.xypress is None or select_bg is not None):
if self.cross_bg is None:
self.cross_bg = self.figure.canvas.copy_from_bbox(self.bbox)
if select_bg is not None:
self.figure.canvas.restore_region(select_bg)
elif self.cross_bg is not None:
self.figure.canvas.restore_region(self.cross_bg)
inv = self.transAxes.inverted()
x, y = inv.transform((event.x, event.y))
(x, xdata) = crop_coordinate(x, 'x')
(y, ydata) = crop_coordinate(y, 'y')
xtext = format_value(xdata, self.xaxis.get_major_formatter())
ytext = format_value(ydata, self.yaxis.get_major_formatter())
# the coefficient 7 is good result from an experiment :)
xtext_pos = -7 * len(xtext) - 10 if x > 0.5 else 10
ytext_pos = -20 if y > 0.5 else 30
if not self.xlock:
l1 = mpl_Line([x, x], [0, 1],
c="#ff0000",
lw=1,
transform=self.transAxes,
figure=self.figure)
self.draw_artist(l1)
a1 = mpl_Annotation(xtext,
xy=(x, y),
xycoords='axes fraction',
xytext=(xtext_pos, ytext_pos),
textcoords='offset points',
bbox=dict(boxstyle="round", fc="#ffff00"))
a1.set_transform(mpl_IdentityTransform())
self._set_artist_props(a1)
self.draw_artist(a1)
if not self.ylock:
l2 = mpl_Line([0, 1], [y, y],
c="#ff0000",
lw=1,
transform=self.transAxes,
figure=self.figure)
self.draw_artist(l2)
if self.xlock:
ytext_pos = -20 if y > 0.5 else 10
else:
ytext_pos -= 20
a2 = mpl_Annotation(ytext,
xy=(x, y),
xycoords='axes fraction',
xytext=(xtext_pos, ytext_pos),
textcoords='offset points',
bbox=dict(boxstyle="round", fc="#ffff00"))
a2.set_transform(mpl_IdentityTransform())
self._set_artist_props(a2)
self.draw_artist(a2)
self.figure.canvas.blit(self.bbox)