[Kde-games-devel] SVG and MainWindow resize handling

[Mauricio Piacentini]

Dmitry Suzdalev wrote:
> Strange that I didn't noticed it - I guess I need to improve my grepping 
> skills :)

The lib uses only RAM caching (for resizing support), so it uses 
QPixmapCache. This was implemented before KPixmapCache made it into 
kdelibs, btw.
But as of any other strategy, I think it depends on specifics of the 
usage. For KMahjongg resizes "feel" fast to me, maybe due to how the 
tiles are composed (backgrounds are the same, faces are baked on top of 
them.) I remember experimenting with pixmap resizing and the time to 
resize the (temporary) pixmap was greater than the time that it takes to 
render the SVG element again, so not worth it. Other games (like KPat) 
might benefit from a different approach (cards more complex?), I am not 
sure. I remember that opening/parsing the svg file can take more time 
than the actual rendering, so in libkmahjongg the current tileset and 
background are kept opened (KSvgRenderer object) and only the required 
elements are rendered.

Regards,
Mauricio Piacentini