Version: 1.6.1 (using KDE 4.6.4) OS: Linux I don't know if it is dolphin bug or some library, because gwenview has exactly the same behaviour. In case of small images, and most of cases they are icons -- the image is not zoomed in/out at all. No matter what I do, the size of the image is the same, only the margin (boundary) is changed to smaller/bigger. In other words, zooming in/out causes more or less images of the SAME size as original. Reproducible: Sometimes Expected Results: What would like to see is flexible zooming in/out images, so for example I could have two images of the screen, both half of the screen. Even if you don't agree of such extent of flexibility, zooming should peformed in such manner than entire space reserved for the image should be used, for image, not for margin.
This issue will be fixed in Dolphin 2.0 that will be released with for KDE SC 4.8. The current behavior has done on purpose originally as scaling up images does not look good if no bilinear scaling is used. Since around KDE SC 4.2 (I'm not sure) the images get scaled bilinear so upscaling would be fine again. So this has been fixed already but needs to wait until 4.8 :-(
Peter, thank you! Is this per application issue, or per library? IOW: should I fill another report for gwenview?
It depends: It is a library issue, but only for those applications that use it (e.g. the file choser). I'm quite sure Gwenview uses a custom implementation and would suggest to file another report for Gwenview.