Repository: spyder-ide/spyder

Issue:
Error when opening Preferences
## Description

### What steps will reproduce the problem?

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Open the Preferences dialog and then the issue reporter pop-ups. Seems like is related with a missing integer cast. I think you need at least Python 3.10 to trigger the error

### Traceback
```python-traceback
Traceback (most recent call last):
  File "C:\Users\dalth\AppData\Local\spyder-6\envs\spyder-runtime\lib\site-packages\spyder\widgets\helperwidgets.py", line 256, in sizeHint
    return QSize(doc.idealWidth(), doc.size().height())
TypeError: arguments did not match any overloaded call:
  QSize(): too many arguments
  QSize(w: int, h: int): argument 1 has unexpected type 'float'
  QSize(a0: QSize): argument 1 has unexpected type 'float'
```

## Versions

* Spyder version: 5.4.4.dev0  (standalone) -> Actually a Spyder 6.0.0a2 conda installer installation that I'm using to check locally #21483
* Python version: 3.10.12 64-bit
* Qt version: 5.15.8
* PyQt5 version: 5.15.9
* Operating System: Windows-10-10.0.19045-SP0

### Dependencies

```
# Mandatory:
atomicwrites >=1.2.0              :  1.4.1 (OK)
chardet >=2.0.0                   :  5.2.0 (OK)
cloudpickle >=0.5.0               :  2.2.1 (OK)
cookiecutter >=1.6.0              :  2.3.0 (OK)
diff_match_patch >=20181111       :  20230430 (OK)
intervaltree >=3.0.2              :  3.1.0 (OK)
IPython >=8.13.0,<9.0.0,!=8.17.1  :  8.15.0 (OK)
jedi >=0.17.2,<0.20.0             :  0.18.2 (OK)
jellyfish >=0.7                   :  1.0.0 (OK)
jsonschema >=3.2.0                :  4.19.0 (OK)
keyring >=17.0.0                  :  24.2.0 (OK)
nbconvert >=4.0                   :  7.8.0 (OK)
numpydoc >=0.6.0                  :  1.5.0 (OK)
paramiko >=2.4.0                  :  3.3.1 (OK)
parso >=0.7.0,<0.9.0              :  0.8.3 (OK)
pexpect >=4.4.0                   :  4.8.0 (OK)
pickleshare >=0.4                 :  0.7.5 (OK)
psutil >=5.3                      :  5.9.5 (OK)
pygments >=2.0                    :  2.16.1 (OK)
pylint >=2.5.0,<3.1               :  2.17.5 (OK)
pylint_venv >=3.0.2               :  3.0.2 (OK)
pyls_spyder >=0.4.0               :  0.4.0 (OK)
pylsp >=1.9.0,<1.10.0             :  1.9.0 (OK)
pylsp_black >=1.2.0,<3.0.0        :  1.3.0 (OK)
pyuca >=1.2                       :  1.2 (OK)
qdarkstyle >=3.2.0,<3.3.0         :  3.2 (OK)
qstylizer >=0.2.2                 :  0.2.2 (OK)
qtawesome >=1.2.1                 :  1.2.3 (OK)
qtconsole >=5.5.0,<5.6.0          :  5.6.0.dev0 (OK)
qtpy >=2.1.0                      :  2.4.0 (OK)
rtree >=0.9.7                     :  1.0.1 (OK)
setuptools >=49.6.0               :  68.1.2 (OK)
sphinx >=0.6.6                    :  7.2.5 (OK)
spyder_kernels >=3.0.0b2,<3.0.0b3 :  3.0.0.dev0 (OK)
superqt >=0.6.1,<1.0.0            :  0.6.1 (OK)
textdistance >=4.2.0              :  4.5.0 (OK)
three_merge >=0.1.1               :  0.1.1 (OK)
watchdog >=0.10.3                 :  3.0.0 (OK)
zmq >=22.1.0                      :  25.1.1 (OK)

# Optional:
cython >=0.21                     :  3.0.2 (OK)
matplotlib >=3.0.0                :  3.7.2 (OK)
numpy >=1.7                       :  1.25.2 (OK)
pandas >=1.1.1                    :  2.1.0 (OK)
scipy >=0.17.0                    :  1.11.2 (OK)
sympy >=0.7.3                     :  1.12 (OK)
```



Discussion:
> Open the Preferences dialog and then the issue reporter pop-ups. Seems like is related with a missing integer cast.

Yep, it seems that's the case. Please open a PR with your proposed fix.

> I think you need at least Python 3.10 to trigger the error.

I couldn't reproduce it on Linux but, as you said, the fix seems really simple.
open Spyder, click Tools --> Reset Spyder to factory defults. Just'a Suggestion

Resolving patch:
diff --git a/spyder/widgets/helperwidgets.py b/spyder/widgets/helperwidgets.py
--- a/spyder/widgets/helperwidgets.py
+++ b/spyder/widgets/helperwidgets.py
@@ -253,7 +253,7 @@ def sizeHint(self, option, index):
         doc.setHtml(options.text)
         doc.setTextWidth(options.rect.width())
 
-        return QSize(doc.idealWidth(), doc.size().height())
+        return QSize(int(doc.idealWidth()), int(doc.size().height()))
 
 
 class IconLineEdit(QLineEdit):


Test patch: