bugGNUstep - Bugs: bug #34833, [windows] NSImageView and large...


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bug #34833: [windows] NSImageView and large images

Submitted by:  Riccardo Mottola <rmottola>
Submitted on:  Tue 15 Nov 2011 04:20:32 PM UTC  
Category: BackendSeverity: 3 - Normal
Item Group: BugStatus: None
Privacy: PublicAssigned to: None
Open/Closed: Open

Sun 06 May 2012 01:18:33 PM UTC, comment #2:

I just started to see a similar problem on Linux with the cairo backend. Not sure if this is related, but when I display a huge image in a normal NSView inside a scroll view and start to scroll, then the views stays empty and need ot trigger a redraw for the image to get displayed.

This may be completely unrelated, but is just as annoying as your problem :-)

Fred Kiefer <FredKiefer>
Project Member
Thu 24 Nov 2011 09:24:31 AM UTC, comment #1:

Could you please check whether there was any output from the backend explaining what went wrong. On Windows this output will end up in the Windows event log, unless you run the application in a debugger.

Fred Kiefer <FredKiefer>
Project Member
Tue 15 Nov 2011 04:20:32 PM UTC, original submission:

When displaying a big image in an NSImageView inside a scroll-view, on Windows, it is not displayed at all (the scroll-view size is calculated correctly though).

I am referring to imaqges like 5000x3000 pixels.

Open LaternaMagica, add a large image. if large enough, it will display gray (the scrollbars resize correctly).
Smaller images do work fine.

The same image will display correctly on gnustep running on linux.


Riccardo Mottola <rmottola>
Project Member


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  • -unavailable- added by FredKiefer (Posted a comment)
  • -unavailable- added by rmottola (Submitted the item)

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    Follow 3 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Sun 06 May 2012 01:18:33 PM UTCFredKieferSummary[windows] NSIMageView and large images=>[windows] NSImageView and large images
    Thu 24 Nov 2011 09:24:31 AM UTCFredKieferItem GroupNone=>Bug
    Tue 15 Nov 2011 04:53:49 PM UTCrmottolaSummary[windows]=>[windows] NSIMageView and large images

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