URL:
<http://savannah.gnu.org/bugs/?18260>
Summary: NSBitmapImage is offset using art backend
Project: GNUstep
Submitted by: tracy454
Submitted on: Sunday 11/12/2006 at 07:57
Category: Backend
Severity: 3 - Normal
Item Group: Bug
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
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Details:
I have been working on NSBitmapImage, and in the course of testing other
things, I see that the following code gives a mis-aligned image:
[aView lockFocus];
NSBitmapImageRep *imgRep = [[NSBitmapImageRep alloc]
initWithFocusedViewRect: [aView bounds]];
[aView unlockFocus];
NSData *tiffRep = [imgRep TIFFRepresentation];
The image is off by 5 pixels in both the X and Y coordinates. That is a very
strange number for the offset. The sample image happens to be a slider
control with a black border.
This problem did not occur with gnustep-back-0.11.0, but appeared in
back-0.12 in the SVN. It only happens with the art backend, the xlib backend
works for both versions. (I can't build the cairo backend, or I would have
tested that too.) The bug occurs with my experimental GIF and JPEG code too.
System: gnustep-core svn rev 24050; Suse Linux 10.1; gcc 4.1
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Sunday 11/12/2006 at 07:57 Name: slider(art)(r24050).tif Size: 5kB
By: tracy454
sample image showing misalignment
<http://savannah.gnu.org/bugs/download.php?file_id=11235>
_______________________________________________________
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