[Qgis-psc] Grant QEP 181 report: Smarter Map Redraws + Tile Download Manager

[Tim Sutton]

Thanks so much for these improvements Martin. Anita are you gathering these
up for a blog post?

Regards

Tim

On Thu, 21 Jan 2021, 15:31 Martin Dobias, <wonder.sk at gmail.com> wrote:

> Hi all
>
> (sorry for slightly late report)
>
> I am happy to report that both planned under the hood improvements have
> been implemented thanks to the grant:
>
> 1. Smarter Map Redraws (https://github.com/qgis/QGIS/pull/40960)
>
> This is helping to avoid the annoying flicker when map in the map canvas
> is zoomed or moved. It is especially noticeable with background maps. The
> work has reduced the problem especially for raster layers. See the videos
> of comparison before/after:
> https://twitter.com/lutraconsulting/status/1349638508877590530
>
> 2. Tile Download Manager (https://github.com/qgis/QGIS/pull/40998)
>
> This chunk of work is not going to be very visible to the users, but it
> should make QGIS behave nicely with remote servers - until now it would be
> common that QGIS would request raster/vector tiles, then abort the requests
> while they were in progress when map got moved/zoomed, only to start those
> requests again - this should be avoided now.
>
> Many thanks to QGIS.org!
>
> Regards
> Martin
>
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