CSS Font size in points doesn't match Node.Font.Size

[Jeff Martin]

The thing is, point size is a fixed size - 1pt==1/72 in, regardless of the DPI. It is simply incorrect and confusing, arbitrarily deciding that a point is 1/96in.

How about implementing the fix based on a global static variable somewhere? And perhaps printing a warning to the console when the first CSS is applied if that global hasn't been set saying, "CSS point-size fix not activated - this will be set by default in a future release".

jeff


On Mar 5, 2014, at 4:03 PM, Felipe Heidrich <felipe.heidrich at oracle.com> wrote:

> 
> The problem is that point size used by Node and point size used by CSS are not the same.
> One uses a 72 DPI and the other 96. Thus the final pixel sizes are different.
> 
> I don’t see how to change one or the other without breaking a ton of people.
> 
> Maybe adding a global font DPI so that Node can be made to match CSS ?
> 
> Suggestions ?
> 
> Felipe
> 
> On Mar 5, 2014, at 12:39 PM, Pedro Duque Vieira <pedro.duquevieira at gmail.com> wrote:
> 
>> Hi Tom, Jeff, Felipe...
>> 
>> Having bugs stay in to maintain backwards compatibility sounds very weird
>> to me IMHO.
>> 
>> If we go down that road aren't we creating a library that will some day
>> have too many glitches and as such less appeal to programmers looking for
>> UI libraries?
>> 
>> Thanks,
>> 
>> 
>>> Hi
>>> On Mar 4, 2014, at 4:42 PM, Jeff Martin <jeff at reportmill.com> wrote:
>>>> Thanks Tom! I assume the thread was this one:
>>>> 
>>>>     Font.font() says it is point size but it looks like it are pixels
>>>> 
>>> http://mail.openjdk.java.net/pipermail/openjfx-dev/2014-January/012398.html
>>>> 
>>>> I guess the final word is that CSS assumes 1pt==1/92in,
>>> Yes
>>>> and Nodes convert that to the real world on render?
>>>> 
>>> On the printer yes, on the display it assumes 72 (pt=px).
>>> 
>>>> And that this is basically a bug, but it can't be fixed due to legacy
>>> considerations?
>>>> 
>>> Yes
>>> Felipe
>> 
>> 
>> -- 
>> Pedro Duque Vieira
>