Merge two pieces of code

[mrjj]

@john_hobbyist
Hi
Nope, it don't work like that. the mouse function overrides that Qt must call and
they cant be in another function.

under
class MyMplCanvas(mpl_qt.FigureCanvasQTAgg):
def mousePressEvent(self, event):
print("PRESS")

and see if it types "PRESS" if you click on the "image"

If it won't compile it means mpl_qt.FigureCanvasQTAgg is not a QWidget and
its not really possible.

[john_hobbyist]

@mrjj I have just tried it. It prints "PRESS"!

But again if I move the rubberband methods under MyMplCanvas and these:

    super().__init__(parent)

    self.rubberBand = None
    self.origin = None

again the initial error...!!!

[john_hobbyist]

This post is deleted!

[mrjj]

@john_hobbyist

Ok that's good news so it is a QWidget. Then there is hope :)
It reacted to the mousepress!

What error ?

the set_canvas one ?

[john_hobbyist]

@mrjj :-)

Traceback (most recent call last):
  File "code.py", line 653, in <module>
    window = OrthoView()
  File "code.py", line 279, in __init__
    self.plotCanvas = MyMplCanvas(self)
  File "code.py", line 109, in __init__
    super().__init__(parent)
  File "/home/john/Desktop/test/venv/lib/python3.8/site-packages/matplotlib/backends/backend_qt5agg.py", line 21, in __init__
    super().__init__(figure=figure)
  File "/home/john/Desktop/test/venv/lib/python3.8/site-packages/matplotlib/backends/backend_qt5.py", line 214, in __init__
    super().__init__(figure=figure)
  File "/home/john/Desktop/test/venv/lib/python3.8/site-packages/matplotlib/backend_bases.py", line 1722, in __init__
    figure.set_canvas(self)
AttributeError: 'OrthoView' object has no attribute 'set_canvas'

[SGaist]

You do realize that your OrthoView does not have such a method ? That its base class (QMainWindow) does not either ?

Therefore since you are taking your code from another project, you might want to check the code of said project for that method.

[mrjj]

@john_hobbyist said in Merge two pieces of code:

set_canvas

But this is not related to the RubberBand thing. ?

if i look in the ORG project
https://github.com/kklmn/OrthoView/blob/master/OrthoView.py

there is no such method?
So did you add it or where does it come from ?

[john_hobbyist]

@SGaist, @mrjj : I have posted the code previously. But again I got the code form github repository and I inserted inside the code for rubberband (all those I have posted in my initial post) I execute the python code and again the same error.... Any ideas??

[mrjj]

@john_hobbyist
Hi
the
'MyMplCanvas' object has no attribute 'rubberBand'
or the
object has no attribute 'set_canvas'

[john_hobbyist]

Hi, sorry, what should I do?

[mrjj]

@john_hobbyist

hi
fix the error.
Tell what line number and what it says.

[john_hobbyist]

@mrjj Hi, for the posted source code above...this is the error:

Traceback (most recent call last):
  File "code.py", line 513, in <module>
    window = OrthoView()
  File "code.py", line 279, in __init__
    self.plotCanvas = MyMplCanvas(self)
  File "code.py", line 113, in __init__
    super().__init__(parent)
  File "/home/john/Desktop/test/venv/lib/python3.8/site-packages/matplotlib/backends/backend_qt5agg.py", line 21, in __init__
    super().__init__(figure=figure)
  File "/home/john/Desktop/test/venv/lib/python3.8/site-packages/matplotlib/backends/backend_qt5.py", line 214, in __init__
    super().__init__(figure=figure)
  File "/home/john/Desktop/test/venv/lib/python3.8/site-packages/matplotlib/backend_bases.py", line 1722, in __init__
    figure.set_canvas(self)
AttributeError: 'OrthoView' object has no attribute 'set_canvas'

[mrjj]

Hi

Ok so it has NOTHING to do with the rubberband at all.
Even before you try to insert that, the app was not working.

So it complains about
figure.set_canvas(self)

So perhaps you didnt copy the figure class etc ?

[john_hobbyist]

@mrjj I have copied everything from the github repository. The only small modification I did in rubberband code is that I changed this part:

import sys

from PySide2.QtCore import QRect
from PySide2.QtCore import QSize
from PySide2.QtWidgets import QWidget
from PySide2.QtWidgets import QRubberBand
from PySide2.QtWidgets import QApplication

to this one:

import rubberband
import sys


from PyQt5 import QtWidgets
from PyQt5 import QtCore 


from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 

Could this be the source of the strange errors?

[SGaist]

Rather than just copying it, did you try to run the application from the repo as is ?

[john_hobbyist]

@SGaist Hi,yes, it runs without any problems!

[SGaist]

Then compare it to your version and see where the difference lies.

[john_hobbyist]

@SGaist : I have tried any possible solution! Is there any other way to select an area on image apart from rubberband?

[JonB]

@john_hobbyist
I don't think so, rubber band is the right way to do it. Even if there were another way, like just clicking, I presume you would face the same issues getting it right as you are now for rubber band.

[john_hobbyist]

I try for many hours to incorporate another code in the code from the github repository. I have fixed some errors (because it was written basically for PyQt4). But I cannot fix this error:

Traceback (most recent call last):
  File "code_2.py", line 333, in <module>
    screen_pixmap = QtGui.QPixmap.grabWidget(app.desktop()) 
NameError: name 'QtGui' is not defined
Segmentation fault (core dumped)

I change the QtWidgets to QtGui and I get this error:

Traceback (most recent call last):
File "code_2.py", line 333, in <module>
  screen_pixmap = QtWidgets.QPixmap.grabWidget(app.desktop()) 
AttributeError: module 'PyQt5.QtWidgets' has no attribute 'QPixmap'
Segmentation fault (core dumped)

Any ideas??