[Lazarus] Mac users: High-DPI

[Michael Ring]

I build Lazarus about every other week from trunk and use it on my Mac. 
I have no idea on how to solve the issue but when you want me to test 
something on trunk let me know....

A Hackintosh could be an alternative for you, haven't used one for a 
looooonnnnnggggggg time but installation was quite straightforward.

Michael


Am 09.03.17 um 14:01 schrieb Ondrej Pokorny via Lazarus:
> Hello,
>
> there is an open issue in Mantis: 
> http://mantis.freepascal.org/view.php?id=31037
>
> Mac OSX widgetsets (Carbon, Cocoa) used 72 DPI as default. This 
> brought problems with the new LCL-scaling that depends on default 96 
> DPI. Therefore I decided to change the default DPI on these widgetsets 
> to 96. This unfortunately made the fonts bigger.
>
> The only solution I can think of is to create a relative DPI scaling 
> to the default widgetset value - every DPI/PPI value will be compared 
> to the WS DefaultPPI. So instead of DPI/PPI we'll have "ScaleFactor". 
> E.g. it means that the property DesignTimePPI will be deleted and 
> changed to DesignTimeScaleFactor. Also PixelsPerInch will have the 
> ScaleFactor equivalent (I'll keep PixelsPerInch). Probably more 
> changes will be needed.
> On Windows: DesignTimePPI=96 -> DesignTimeScaleFactor=100 <- On Mac: 
> DesignTimePPI=72. The same goes for PixelsPerInch/ScaleFactor.
>
> ---
>
> Or do you have another idea how to make it work? Is it possible to 
> change the DPI settings to 96 without font scaling problem (so that 
> ScaleFactor is not needed)? Does anybody of you run a Mac? It looks 
> that the count of Mac users running Lazarus trunk is very limited - we 
> usually get feedback from them when a stable version is released :(
>
> Testing on Mac is very hard for me because I don't have one. I have 
> only a VM which is a pain to use.
>
> Ondrej