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Implemented single_axis option as described in documentation. #293

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Implemented single_axis option as described in documentation. #293

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77d6dd6
Implemented single_axis option as described in documentation.
dianeoyen Mar 30, 2016
933d836
Updated single_axis option for vertical orientation
dianeoyen Apr 12, 2016
e23b5fd
Fixed de-selection of scatterplot points.
dianeoyen Apr 12, 2016
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20 changes: 17 additions & 3 deletions chaco/tools/drag_zoom.py
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Original file line number Diff line number Diff line change
Expand Up @@ -81,7 +81,7 @@ def dragging(self, event):
# Compute the zoom amount based on the pixel difference between
# the previous mouse event and the current one.

if self.maintain_aspect_ratio:
if self.maintain_aspect_ratio or self.single_axis:
zoom_x = zoom_y = self._calc_zoom(self._prev_y, event.y)
else:
zoom_x = self._calc_zoom(self._prev_x, event.x)
Expand All @@ -91,8 +91,22 @@ def dragging(self, event):
zoom_x = 1.0/zoom_x
zoom_y = 1.0/zoom_y

self.zoom_in_x(zoom_x)
self.zoom_in_y(zoom_y)
if not self.single_axis:
self.zoom_in_x(zoom_x)
self.zoom_in_y(zoom_y)
else:
# Zoom only along specified axis
flip = self.component.orientation=='v'
if self.axis == 'index':
if flip:
self.zoom_in_y(zoom_y)
else:
self.zoom_in_x(zoom_x)
if self.axis == 'value':
if flip:
self.zoom_in_x(zoom_x)
else:
self.zoom_in_y(zoom_y)

return

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4 changes: 4 additions & 0 deletions chaco/tools/range_selection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -613,6 +613,10 @@ def _set_selection(self, val):
new_mask = (data_pts >= low) & (data_pts <= high)
selection_masks.append(new_mask)
self._selection_mask = new_mask
else:
# Reset datasource metadata if no points selected
del datasource.metadata[self.mask_metadata_name]

datasource.metadata_changed = {self.mask_metadata_name: val}

self.trait_property_changed("selection", oldval, val)
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