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.
The use case is adjusting shapes by moving their vertexes, even if
they are adjacent or overlapping another shape. Currently always
the "later drawn" shape wins, making it impossible to adjust an
earlier shape without re-creating it. Adjusting existing shapes is
common for review scenarios.
I have experimented with preferring the highlighted shape, but
I found it finicky and less clear as to how the vertex preference
works. JOSM (and OpenStreetMap editor) also uses the "prefer
selected" approach and it works well there.
For any shape with a dimension smaller than 2*epsilon, there can be
multiple potential points to select from. In practice this resulted
in e.g. the top right corner being highlighted when the cursor was
placed below the bottom right corner.
* Modified the default label text box into a drop down
* Unchecked the box at startup
* Removed commented code
* Removed unnecessary update method for the combobox
* Changed naming style for class
Steps to reproduce this particular issue:
1. draw a box
2. select the box
3. hover over one of the corners as if you want to resize the box (no click needed)
4. press DEL to delete the box
5. left click on the canvas
Note there are two more destructive operations on the canvas' `shape` in
`undo_last_line` and `reset_all_lines`, but former is dead code and latter
I don't know how to trigger. Thus I can't be sure un-highlighting will not
lead to visual glitches.
There are other potential fixes, e.g. checking in `selected_vertex`. I can
rework the patch, but then again, the fix is so straight forward that telling
me is probably more effort than just rewriting it.
See #750
See #605
* Fix incorrect save dir path handling for ML format.
Save dir path was split by incorrect os.dependent separator '/'
which was the cause of labels being saved to parent folder.
* Implement path normalization for command arguments.
Renamed 'predefined_classes_file' parameter to 'class_file'.
* rename local variables in main file
* additional renaming of functions and variables
* Rename main file functions
* Rename functions and variables in canvas.py
* Rename functions and locals for remaining files
* Rename non-Qt derived class' members
* Rename members of Qt-derived classes
* Fix paint label issue
* adds createMl reader & writer class
* adds getFormatMeta function to support more than two save_format
* adds CreateML read & write support
* adds format CreateML icon
* fixes negative height/width
* removes type hints
* fixes coordinate calculation
* adds unit test
* removes typehint
* Add item single click slot in labelDialog.py
In the original code, double clicking a list item will set the text property and automatically validate afterwards, with the label dialog window disappearing.
In this revised version, double click behavior is unchanged, while single click is added. When single clicking a list item, it will only set text in the QLineEdit. Users can change the text by clicking other items before validating themselves by clicking yes.
Stefan Breunig
Zhang Ch. N
tzutalin
Paul Anton Letnes
Aditya Kumar
Sam.An
Tiger Nie
ngc92
WEN Hao
Denis
Cerno_b
chenghsiung
enicck
EuihyunLee
Chris Rapson (AT)
Laszlo Treszkai
stephi
Adwait Bhope
BIASUTTI Pierre
Joakim Eriksson
Lieven Govaerts
yangjiangjie
Antoine Broyelle
ap193uee
vdalv
wenliwyan