Image support enhancements

[SamSandq]

I propose that the following be added to NAppGUI, as they are supported on all platforms and useful:

• TIFF support
• configurable quality (compression) factor for JPG

[xbowzone]

is there a way to implement lanczos and spline36 scaling/resizing for images?

[frang75]

Hi @xbowzone
Still no. image_scale() use drawing contexts to change the image dimensions. At the moment, the unique way to ensure a method is obtain the pixel buffer with image_pixels and use a third party library.

[xbowzone]

Thanks @frang75 I'll take a look into it and try to find some third party lib with good docs.
Also how to integrate for eg: mpv into nappgui to play videos. Apologies for being off topic here.

[SamSandq]

This is a very interesting topic… I found this https://en.wikipedia.org/wiki/Comparison_gallery_of_image_scaling_algorithms

and it provides a good overview of what’s available.

[frang75]

Thanks @frang75 I'll take a look into it and try to find some third party lib with good docs. Also how to integrate for eg: mpv into nappgui to play videos. Apologies for being off topic here.

NAppGUI doesn't support video, but its an interesting topic. Please, open an issue.