* Remove name of nonexistent PCL component (core)
Probably, common is meant, which is also requested
* Add boost include, missing in upcoming PCL versions
Was removed in pcl/conversion.h here: 292593abd3
as_posix() needed so that backslashes are output as forward slashes in the URL string (Windows)
Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>
The intent for this change is to allow faster labeling when there
are streaks of the same label occasionally, but not consistently
enough to enable "default label" mode. With this PR the user can
simply click again to confirm the previous selection, without
having to aim for the OK button, or move either hand to the
ENTER button.
The alignment and position change of the buttons is for two reasons:
- it covers less of the drawn shape, easing verification of the
label to be selected
- the alignment wasn't taken into account for offset calculation.
It works if the dialog is shown, but that causes the dialog to
briefly flicker in the old position. Presumably an `adjustSize`
or similar is needed on more widgets, but I was unable to
figure out which.
The previous variant calculates the delta by checking how many
"image pixels" the cursor was moved, and then emit an absolute
scrollbar move based on that. However, when zoomed in a single
image pixel can be multiple scroll bar units.
The effect was that panning a zoomed in image was very slow,
giving a rubber band kind of effect. Wiggling the mouse would emit
more deltas, eventually moving the image below the cursor again.
This PR uses the absolute coordinates instead, which keeps the
image closer to the cursor. There is still a slight rubber band
effect, probably due to slight differences between painter and
scroll bar positions/units.
The result is that panning a zoomed in image feels less sluggish.
This fixes a crash with the following steps to reproduce:
1. highlight a vertex or shape with the cursor
2. swap image using keyboard controls (i.e. press D)
3. left click on image without moving cursor. No shape may be below
cursor.
What happens is that the canvas will emit a selection signal for
the shape from the previous image, which then can't be found anymore
in `shapes_to_items`, causing this error:
```
Traceback (most recent call last):
File "/home/stefan/code/labelImg/./labelImg.py", line 806, in shape_selection_changed
self.shapes_to_items[shape].setSelected(True)
KeyError: <libs.shape.Shape object at 0x7fdb281d06a0>
```
This builds upon the fix from #858, which fixed the issue for
selected shapes, but not highlights.
