Wrong font size

Hi all,

I am web designer and I trying Gimp 2.6.8 in Debian Lenny (2.6.26-2) and
Ubuntu Karmic (2.6.31-14).

I found that, when I set font size to X pixels, Gimp converts it into
wrong size, i.e. 16 px at 72 ppi are 12 px, 16 px at 96 ppi are 12 px,
16 px at 300 ppi are 12 px, ... What's wrong?

Is it a bug?

I can understand that if Gimp use 72 ppi for fonts when I set 16 px it
converts it into 12 px. But what about other cases?


Thanks,

On Tue, Mar 16, 2010 at 11:20 AM, bruno <brunomendoza@gmail.com> wrote:
> Hi all,
>
> I am web designer and I trying Gimp 2.6.8 in Debian Lenny (2.6.26-2) and
> Ubuntu Karmic (2.6.31-14).
>
> I found that, when I set font size to X pixels, Gimp converts it into
> wrong size, i.e. 16 px at 72 ppi are 12 px, 16 px at 96 ppi are 12 px,
> 16 px at 300 ppi are 12 px, ... What's wrong?
>
> Is it a bug?
>
> I can understand that if Gimp use 72 ppi for fonts when I set 16 px it
> converts it into 12 px. But what about other cases?

In Gimp 2.6, font sizes are based upon your monitor ppi, not the ppi
of the image. There is a section in Preferences ('Display', if I
recall correctly), which allows you to override this. This could be
regarded as a bug (particularly for anamorphic images (ie. those that
do not have square pixels.. like: 48x96ppi)

In recent development versions of GIMP, I understand that text size is
proportional to image ppi.

Hopefully that helps. I found your email confusing, as in my opinion,
if you input 16px, then what you should get is always 16px. However,
there are also other factors -- many fonts seem to be badly adjusted
(baseline too low, overall scale too small,...), so that you must
request much larger sizes to get the ordinary size you want (not only
in GIMP, but in all programs.). Have you checked your results with
different fonts?

On Tue, 2010-03-16 at 12:42 +1030, David Gowers wrote:
> On Tue, Mar 16, 2010 at 11:20 AM, bruno <brunomendoza@gmail.com> wrote:
> > Hi all,
> >
> > I am web designer and I trying Gimp 2.6.8 in Debian Lenny (2.6.26-2) and
> > Ubuntu Karmic (2.6.31-14).
> >
> > I found that, when I set font size to X pixels, Gimp converts it into
> > wrong size, i.e. 16 px at 72 ppi are 12 px, 16 px at 96 ppi are 12 px,
> > 16 px at 300 ppi are 12 px, ... What's wrong?
> >
> > Is it a bug?
> >
> > I can understand that if Gimp use 72 ppi for fonts when I set 16 px it
> > converts it into 12 px. But what about other cases?
>
> In Gimp 2.6, font sizes are based upon your monitor ppi, not the ppi
> of the image. There is a section in Preferences ('Display', if I
> recall correctly), which allows you to override this. This could be
> regarded as a bug (particularly for anamorphic images (ie. those that
> do not have square pixels.. like: 48x96ppi)

My monitor has a density of 92 ppi and even setting this ppi for new
image file Gimp change 16 pixels, for example, to 12 pixels.

>
> In recent development versions of GIMP, I understand that text size is
> proportional to image ppi.
>
> Hopefully that helps. I found your email confusing, as in my opinion,
> if you input 16px, then what you should get is always 16px. However,
> there are also other factors -- many fonts seem to be badly adjusted
> (baseline too low, overall scale too small,...), so that you must
> request much larger sizes to get the ordinary size you want (not only
> in GIMP, but in all programs.). Have you checked your results with
> different fonts?

This is not always, i.e. a web browser is not using the monitors ppi but
its own ppi font size fonts. 16 px for font size are equivalent to 12
real pixels. I thought that Gimp was working well.

I've used Bitstream Vera Sans (Gnome), Sans and Serif.The result is the
same.

Thanks,

Hi,

On Tue, 2010-03-16 at 12:42 +1030, David Gowers wrote:

> In Gimp 2.6, font sizes are based upon your monitor ppi, not the ppi
> of the image. There is a section in Preferences ('Display', if I
> recall correctly), which allows you to override this. This could be
> regarded as a bug (particularly for anamorphic images (ie. those that
> do not have square pixels.. like: 48x96ppi)

Sorry, but what makes you think that font size would be based on monitor
resolution? That should not be the case and I don't think there is code
in GIMP that would take monitor resolution into account for anything but
the image view with dot-for-dot turned off.


Sven

On Tue, 2010-03-16 at 00:50 +0000, bruno wrote:

> I am web designer and I trying Gimp 2.6.8 in Debian Lenny (2.6.26-2) and
> Ubuntu Karmic (2.6.31-14).
>
> I found that, when I set font size to X pixels, Gimp converts it into
> wrong size, i.e. 16 px at 72 ppi are 12 px, 16 px at 96 ppi are 12 px,
> 16 px at 300 ppi are 12 px, ... What's wrong?

How do you define font size? How do you determine that the result is
12px? What exactly are you measuring?


Sven