`ValueError` when trying to plot 2D histogram items with `PyQt6`

[michael-miftek]

In {plotpy_dir}\items\image\base.py Line 604 - 606 part of BaseImageItem.draw_image()

dest = _scale_rect(
            self.data, src_rect, self._offscreen, dst_rect, self.lut, self.interpolate
        )

There is an issue when using the 2d histogram example that produces the following error.

File "C:\Users\Username\AppData\Local\Programs\Python\Python312\Lib\site-packages\plotpy\items\image\base.py", line 604, in draw_image
    dest = _scale_rect(
           ^^^^^^^^^^^^
ValueError: Error calling Python override of QFrame::paintEvent(): Invalid destination rectangle (expected tuple of 4 integers)

This Error ends up leaving the painter object open causing a crash, after finding the location changing the dst_rect -> tuple(map(int, dst_rect)) fixes the problem but wanted to make someone aware since it is expected as tuple[float, float, float, float].

[PierreRaybaut]

Thanks for the feedback.

I can't reproduce the issue.

Here's how I tried to reproduce this issue:

• Latest PlotPy version (2.7.2)
• Windows 11
• Python 3.12 with the latest versions of all dependencies (see output of pip list: pip_list_py312.txt)
• Running the plotpy\tests\items\test_hist2d.py test

With all this, there is no exception.

Could you please tell us more about the PlotPy version you are using and your Python distribution (output of a pip list)?

[PierreRaybaut]

I've just managed to reproduce the issue with PyQt6 (instead of PyQt5 in my initial distribution).