Re: PNG image displayed larger in wx widget without any scale change

Hi Igor,

I attach image here also, I have generated image just for test with Paint, 
it has nothing in particular, actually I have notice the issue on 
matplotlib.figure graphics saved as PNG images. I have same graphic PNG 
image displayed in 2 tools, one is eclipse GUI based where graphic PNG 
image is displayed at its real size and a tool with wxPython GUI where same 
image is displayed larger than it is actually although there are no scale 
changes made anywhere.
Screenshot of wxPython control I have tried is visible in right side of 
Paint-Wx.png I have already attached.

Here are some code sample also:
From parent class:
self.dataEyesWindow = wx.ScrolledWindow( self.dataEyesPanel, wx.ID_ANY, 
wx.DefaultPosition, wx.DefaultSize, wx.HSCROLL|wx.VSCROLL )
self.dataEyesWindow.SetScrollRate( 5, 5 )
dataEyesWindowSizer = wx.BoxSizer( wx.VERTICAL )
self.dataEyesWindow.SetSizer( dataEyesWindowSizer )
self.dataEyesWindow.Layout()
dataEyesWindowSizer.Fit( self.dataEyesWindow )
dataEyesSizer.Add( self.dataEyesWindow, 1, wx.EXPAND |wx.ALL, 5 )
From child class:
data_eyes_gsbmp = wxgbmp.GenStaticBitmap(self.dataEyesWindow, wx.ID_ANY, 
wx.Bitmap(img_file_path, wx.BITMAP_TYPE_PNG))
self.dataEyesWindow.GetSizer().Add(data_eyes_gsbmp, 0, wx.ALL, 5)

Thank you for answering,
Alexandra
Pe vineri, 12 mai 2023, la 16:05:49 UTC+3, Igor Korot a scris:

> Hi, Alexandra,
>
>
> On Fri, May 12, 2023, 7:07 AM Alexandra Grigoras <[email protected]> 
> wrote:
>
>> Hi all,
>>
>> I have a problem figuring out why PNG image is displayed larger in a wx 
>> widget than its actual size without making any scale change(Python 3.10, 
>> wxpython 4.2.0, Windows 10). I have tried wx.ScrolledWindow/wx.Panel with 
>> wxStaticBitmap, wx.lib.statbmp.GenStaticBitmap and overwrite of 
>> wx.lib.statbmp.GenStaticBitmap's OnPaint method and debugged height, width 
>> and scale members on every object up to wx.DC and I have not found any 
>> explanation: height and width are actual height and width  the image and 
>> scale is 1.0. I have attached picture where in left size is image with its 
>> real size and in right side is how it is displayed in wx.ScrolledWindow.
>> I would need first to understand why PNG image is displayed larger in a 
>> wx widget than its actual size and second to display PNG image in 
>> wx.ScrolledWindow at its actual real size.
>
>
> Can you build the main C++ library and then its image sample?
>
> If not - can you attach the image and screenshot of wxPython control you 
> tried?
>
> Thank you.
>
>
>> Regards and thank you in advance,
>> Alexandra
>>
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