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Add painter widget #7411

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blink1073 wants to merge 9 commits into from
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Add painter widget #7411

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d2a2350
Add painter widget
blink1073 Nov 5, 2016
1933b4c
Undo accidental changes
blink1073 Nov 5, 2016
bf3219c
Update docs and allow cmap to be passed in
blink1073 Nov 5, 2016
908f0b8
Add example and enforce integer image extents
blink1073 Nov 5, 2016
a49725f
Fix overlay setter and add tests
blink1073 Nov 5, 2016
cdcd45e
Add handling of state_modifier_keys
blink1073 Nov 6, 2016
2f6eb99
Clear the labels when resizing but update size
blink1073 Nov 14, 2016
10ddacb
Address review comments
blink1073 Nov 15, 2016
3e3d9bd
Add a note about setting the color
blink1073 Nov 19, 2016
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Clear the labels when resizing but update size
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@blink1073
blink1073 committed Nov 14, 2016
commit 2f6eb99d0cade736c5bbf9144a3a7f87fa09facb
19 changes: 12 additions & 7 deletions lib/matplotlib/widgets.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2680,15 +2680,10 @@ def __init__(self, ax, on_select=None, overlay_props=None,
extent=(x0, x1, y0, y1), aspect=self.ax.get_aspect())
props.update(overlay_props or {})

extents = self.ax.get_window_extent().extents
self._offsetx = extents[0]
self._offsety = extents[1]
self._shape = (int(extents[3] - extents[1]),
int(extents[2] - extents[0]))
self._overlay = np.zeros(self._shape, dtype='uint8')
self._resize(None)
self._overlay_plot = self.ax.imshow(self._overlay, **props)

self.artists = [self._cursor, self._overlay_plot]
self.connect_event('resize_event', self._resize)

# These must be called last
self.label = 1
Expand Down Expand Up @@ -2758,6 +2753,16 @@ def _onmove(self, event):
self.update()
self.onselect(event.xdata, event.ydata)

def _resize(self, event):
extents = self.ax.get_window_extent().extents
self._offsetx = extents[0]
self._offsety = extents[1]
self._shape = (int(extents[3] - extents[1]),
int(extents[2] - extents[0]))
self._overlay = np.zeros(self._shape, dtype='uint8')
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@QuLogic QuLogic Nov 15, 2016

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You may be able to use _image.resample in the same way that imshow eventually does if you want take a stab at preserving the overlay.

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@blink1073 blink1073 Nov 15, 2016

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That uses a lot of private APIs, I'd prefer to keep this simple. I added a note about the clearing behavior in the docs.

if self._overlay_plot:
self._overlay_plot.set_data(self._overlay)

def _release(self, event):
pass

Expand Down