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slub / dfg-viewer

The DFG Viewer is a free web service for browsing digitized books from remote library repositories in a rich and dynamic environment.
https://dfg-viewer.de
GNU General Public License v3.0
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Two finger zoom is not working properly #201

Closed albig closed 1 year ago

albig commented 2 years ago

Via Mailing-List:

Im DFG-Viewer soll man ja wohl auch mit der 2-Finger-Geste zoomen können. Das geht bei mir /Mac, alle Browser/ zu rasch. Es ist kaum kontrollierbar und damit leider nahezu unbenutzbar. Ist das eine Mac-Eigenart oder liegt das Problem woanders?

Beispiele: https://sachsen.digital/werkansicht?tx_dlf[id]=3632&tx_dlf[page]=1 http://dfg-viewer.de/show/?tx_dlf[id]=http://mets.sub.uni-hamburg.de/kitodo/PPN611986183

albig commented 2 years ago

Related to Kitodo.Presentation. Maybe already enhanced/fixed by https://github.com/kitodo/kitodo-presentation/pull/763 @dvoracek-slub?

dvoracek-slub commented 2 years ago

Haven't tried this on a Mac, but yes, I think this should be fixed by the OL upgrade. You can observe that behavior on a PC laptop as well when using the scrolling gesture for zooming.

In the release notes, they say:

On the subject of view transitions, scrolling with a trackpad or magic mouse now transitions the view resolution smoothly. Instead of jumping to the next integer zoom level, trackpad or magic mouse scrolling can leave the view at a fractional zoom level. In line with this trackpad behavior, pinch zooming on touch devices also now leaves the view at a fractional zoom level (see the upgrade notes for an option to restore the old behavior).

albig commented 2 years ago

Thank you for your feedback @dvoracek-slub. So I keep this open until the releases of Kitodo.Presentation 4.0 and DFG-Viewer 6.0.