[Lazarus] New high DPI features in 1.7

[Erwin van den Bosch]

Op 9-12-2016 om 12:18 schreef Ondrej Pokorny via Lazarus:
> On 09.12.2016 11:52, Erwin van den Bosch via Lazarus wrote:
>> Thanks for the good work Ondrej! A big step forward. I will test it 
>> in the next few days and hopefully can give some feedback.
>>
>> Although this is a step forward I think working with pixels is 
>> something from the past as with the Sinclair ZX81 (where you have 
>> 64x48 pixels) or Commodore 64.  (320x200px!) :-) But today's 
>> computers still thinking in pixels not in size. And working with just 
>> pixels might work if our screens will always be 1024x768 pixels with 
>> size of 15".
>
> If you want pixel perfect drawing, you have to use pixels :(
>
> Ondrej

When you introduce DPI of a screen and scaling you lost the pixel 
perfect drawing too. :(
Example: scaling from 96 to 120 dpi = x 1.25
So 7 px * 1.25 = 8.75 = 9
     21 px * 1.25 = 26.25 = 26
     22 px * 1.25 = 27.5 = 28
How to get pixel 27?

Erwin