Bug 164611

Summary:	Low quality upsampling when zooming images
Product:	[Applications] gwenview	Reporter:	Frederik Himpe <fhimpe>
Component:	general	Assignee:	Gwenview Bugs <gwenview-bugs-null>
Status:	RESOLVED INTENTIONAL
Severity:	normal	CC:	abegorov
Priority:	NOR
Version:	2.1
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Image shown at 500% scaling, gwenview left, eog right

Description Frederik Himpe 2008-06-21 20:10:57 UTC

Version:           2.1 (using Devel)
Installed from:    Compiled sources

When zooming images, it seems Gwenview seems to do a bad job upsampling the image, making it look very pixelated. Compare the attached screenshot showing a detail of an image zoomed at 500% with gwenview on the left side and eog on the right side.

Comment 1 Frederik Himpe 2008-06-21 20:12:46 UTC

Created attachment 25504 [details]
Image shown at 500% scaling, gwenview left, eog right

Comment 2 Aurelien Gateau 2008-06-22 21:05:12 UTC

I consider this a feature, not a bug: if your zoom ratio is higher than 200%, Gwenview disable smoothing because it does not really bring anything interesting except a magma of blurred pixel, and it prevents you from seeing the real pixels when you want to see them (for example when looking at a screenshot or at an icon).

Comment 3 abegorov 2010-05-02 20:17:02 UTC

I think it will be good if:
  * add option to disable this feature; 
  * add option for zoom ratio on which Gwenview disable smothing; 
  * disable this feature for fullscreen mode.