def get_coordinates(self):
""" return shape coordinates in percentages (left, top, right, bottom)
"""
(x1, y1), (x2, y2) = self.coordinates
drawing_width = pixels_to_EMU(self._chart.drawing.width)
drawing_height = pixels_to_EMU(self._chart.drawing.height)
plot_width = drawing_width * self._chart.width
plot_height = drawing_height * self._chart.height
margin_left = self._chart._get_margin_left() * drawing_width
xunit = plot_width / self._chart.get_x_units()
margin_top = self._chart._get_margin_top() * drawing_height
yunit = self._chart.get_y_units()
x_start = (margin_left + (float(x1) * xunit)) / drawing_width
y_start = ((margin_top
+ plot_height
- (float(y1) * yunit))
/ drawing_height)
x_end = (margin_left + (float(x2) * xunit)) / drawing_width
y_end = ((margin_top
+ plot_height
- (float(y2) * yunit))
/ drawing_height)
def _norm_pct(pct):
""" force shapes to appear by truncating too large sizes """
if pct > 1:
pct = 1
elif pct < 0:
pct = 0
return pct
# allow user to specify y's in whatever order
# excel expect y_end to be lower
if y_end < y_start:
y_end, y_start = y_start, y_end
return (_norm_pct(x_start), _norm_pct(y_start),
_norm_pct(x_end), _norm_pct(y_end))
def get_coordinates(self):
""" return shape coordinates in percentages (left, top, right, bottom)
"""
(x1, y1), (x2, y2) = self.coordinates
drawing_width = pixels_to_EMU(self._chart.drawing.width)
drawing_height = pixels_to_EMU(self._chart.drawing.height)
plot_width = drawing_width * self._chart.width
plot_height = drawing_height * self._chart.height
margin_left = self._chart._get_margin_left() * drawing_width
xunit = plot_width / self._chart.get_x_units()
margin_top = self._chart._get_margin_top() * drawing_height
yunit = self._chart.get_y_units()
x_start = (margin_left + (float(x1) * xunit)) / drawing_width
y_start = ((margin_top + plot_height - (float(y1) * yunit)) /
drawing_height)
x_end = (margin_left + (float(x2) * xunit)) / drawing_width
y_end = ((margin_top + plot_height - (float(y2) * yunit)) /
drawing_height)
def _norm_pct(pct):
""" force shapes to appear by truncating too large sizes """
if pct > 1:
pct = 1
elif pct < 0:
pct = 0
return pct
# allow user to specify y's in whatever order
# excel expect y_end to be lower
if y_end < y_start:
y_end, y_start = y_start, y_end
return (_norm_pct(x_start), _norm_pct(y_start), _norm_pct(x_end),
_norm_pct(y_end))
def _set_border_width(self, w):
self._border_width = pixels_to_EMU(w)
def get_emu_dimensions(self):
""" return (x, y, w, h) in EMU """
return (pixels_to_EMU(self.left), pixels_to_EMU(self.top),
pixels_to_EMU(self._width), pixels_to_EMU(self._height))
def get_y_units(self):
""" calculate one unit for y axis in EMU """
dh = pixels_to_EMU(self.drawing.height)
return (dh * self.height) / self.y_axis.max
def _set_border_width(self, w):
self._border_width = pixels_to_EMU(w)
def get_emu_dimensions(self):
""" return (x, y, w, h) in EMU """
return (pixels_to_EMU(self.left), pixels_to_EMU(self.top),
pixels_to_EMU(self._width), pixels_to_EMU(self._height))
