/usr/lib/python2.7/dist-packages/chaco/selectable_legend.py is in python-chaco 4.5.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | from chaco.tools.api import SelectTool
from traits.api import List
from legend import Legend
class SelectableLegend(Legend, SelectTool):
# A list of indices into self._cached_labels that indicates which labels
# should be rendered in the "selected" style
selections = List
# A cached list of tuples (x,y,w,h) of each label's geometry
_cached_label_dims = List
#------------------------------------------------------------------------
# Legend methods
#------------------------------------------------------------------------
def _do_layout(self):
Legend._do_layout(self)
self._compute_label_dims()
def _compute_label_dims(self):
dims = []
edge_space = self.border_width + self.border_padding
icon_width, icon_height = self.icon_bounds
icon_x = self.x + edge_space
text_x = icon_x + icon_width + self.icon_spacing
y = self.y2 - edge_space
for i, label_name in enumerate(self._cached_label_names):
label_width, label_height = self._cached_label_sizes[i]
y -= label_height
icon_y = y + (label_height - icon_height) / 2
dims.append((icon_x, icon_y, icon_width + self.icon_spacing + label_width,
label_height))
y -= self.line_spacing
self._cached_label_dims = dims
#------------------------------------------------------------------------
# SelectTool interface
#------------------------------------------------------------------------
def _get_selection_state(self, event):
for ndx, dims in enumerate(self._cached_label_dims):
x, y, w, h = dims
if (x <= event.x <= x+w) and (y <= event.y <= y+h):
return (ndx in self.selections), True
else:
if len(self._cached_label_dims) > 0:
return (ndx in self.selections), False
else:
return False, False
def _get_selection_token(self, event):
for ndx, dims in enumerate(self._cached_label_dims):
x, y, w, h = dims
if (x <= event.x <= x+w) and (y <= event.y <= y+h):
return ndx
else:
return None
def _select(self, index, append=True):
if append:
self.selections.append(index)
else:
self.selections = [index]
return
def _deselect(self, index=None):
if index in self.selections:
self.selections.remove(index)
return
|