Per display is kind of right, but it also varies per surface (depending
on which display it's mostly on).
We already have a "DPI" attribute per surface that's not fully wired up.
My thought was to add a "scale" attribute next to that, so that anyone
probing the DPI of a surface will get (display_DPI * scale).
Scale alone is overly simplistic for professional UI design, and when I
tried to implement just DPI alone it was met with some resistance and
never got finished. So I think having both is the answer. That way you
can build your toolkit to look at DPI or a simple scale.
On 25/08/15 02:05, Gerry Boland wrote:
Hey folks,
chatting with the UITK guys, they need support for UI scaling (i.e. grid
unit value) per display. I think adding a scale parameter to Mir would
make sense for this. I've written up a proposal here, please have a look
and see what you think:
https://docs.google.com/document/d/1Cr-8qz_3DTxOyOiZIQjgX6lVdQQulxfE_5uAValKAdY/edit#
Feel free to comment
Thanks
-Gerry
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