RFC: Sane rectangle class

[Noel Grandin]

On Thu, 19 Mar 2020 at 17:14, Luboš Luňák <l.lunak at collabora.com> wrote:

> - internal representation will be whatever sane thing will work, e.g.
> x,y,width,height , and it won't matter for the API
> - empty rectangle is simply width == 0 || height == 0
>
>
+1 on this part.

FWIW, the Java Rectangle API is pretty much this.

One important thing - we will need to choose a fundamental type i.e
float32/float64/int32/int64 for the co-ords.

All of these have the normal pro's and con's when it comes to graphics APIs.

With one extra wrinkle: the current tools::Rectangle uses long, and lots of
places that work with tools::Rectangle also use long, which is particularly
pernicious because long is a different bit-size on Windows and Linux.
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