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Re: [Texmacs-dev] TeXmacs on retina screens

From: Gubinelli Massimiliano
Subject: Re: [Texmacs-dev] TeXmacs on retina screens
Date: Tue, 4 Dec 2012 11:37:49 +0100

 yes, vector operations on the graphic device are automatically scaled at the 
right size. As for bitmaps i think we just need to provide qt with high 
resolution ones. If you explain to me how to have 144 dpi bitmaps for the fonts 
should be able to convince Qt to show them properly. I've tried to tweak 
texmacs to have double resolution bitmaps for tge glyphs but didn't managed to 
obtain any result. 


On 4 déc. 2012, at 09:28, Joris van der Hoeven <address@hidden> wrote:

> Hi Max,
> On Tue, Dec 04, 2012 at 12:07:35AM +0100, Gubinelli Massimiliano wrote:
>> as far as I understand the qt port ready works fine under retina (checked on 
>> my machine) the real issue is that we have to provide bitmapped fonts at 
>> double screen resolution and I was not able to understand how to do this. 
>> the same should be done for icons. retina display is just a standard display 
>> where resolution is more or less 144 dpi instead of 72 so if Jpris help me 
>> in obtaining that texmacs produce screen fonts at that resolution it should 
>> be possible to convince qt to put them onscreen in the right way. 
>> I currently cannot use my retina laptop since texmacs does not work properly 
>> so I'm very much interested in improving it in that direction.
> Yes, Ingolf/Max are right in the sense that TeXmacs works "fine",
> except that no advantage is taken out of the higher resolution.
> In principle, TeXmacs is able to work with fonts at higher resolution,
> and arbitrary size icons (by the way, I just committed the SVG versions
> of the new set of TeXmacs icons, which one should use in this case).
> So there is no real obstacle on our side.
> It rather seems to on the Qt/X11 side that there is a problem,
> because 1 pixel is no longer 1 pixel on a retina screen (some kind of
> automatic zooming is applied).  It is not clear to me how to modify
> the renderers so as to work on Retina screens.  Please investigate
> the available APIs; as soon as I understand what should be done,
> I can help to do the necessary things.
> Best wishes, --Joris
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