Gets the internal scale factor that maps from monitor coordinates to device pixels.
On traditional systems this is 1, but on very high density outputs it can be a higher value (often 2).
This can be used if you want to create pixel based data for a particular monitor, but most of the time you’re drawing to a surface where it is better to use [[email protected]_scale_factor] instead.
| this |
a `GdkMonitor` |
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the scale factor |