On 22 mars 06, at 11:03, Andrew Tween wrote:

> Hi Stef,
> That sounds good. I will be interested to see the new Pretty Printer.

:)

> Is any of it public yet?

Damien published a beta in our local store (I could give you access  
to it).
But first I think that we should check if this is working :)


> And I'm pleased that Shout is still working well for you,
> Cheers,
> Andy
>
>
> ----- Original Message -----
> From: "stéphane ducasse" <ducasse at iam.unibe.ch>
> Newsgroups: gmane.comp.lang.smalltalk.squeak.general
> Sent: Wednesday, March 22, 2006 7:41 AM
> Subject: Re: Henrik antialising
>
>
> Thanks andy
>
> this is really good to get such a kind of news. I'm really impressed.
> I should learn
> and try to do something too.
>
> One guy is working on Gutenberg a new pretty printer in VW. As soon
> as it will be working
> and tests are green I will port it to squeak (would be cool with
> shout). I imagine typing and seeing the
> code colored and put at the right place (we can dream).
>
> PS: Shout is working so well with the students (thanks thanks thanks).
>
> On 21 mars 06, at 12:24, Andrew Tween wrote:
>
>> Hi Stef,
>> Sorry about that. I'll check my e-mail settings.
>>
>> Here is an update on the sub-pixel anti-aliasing work I have been
>> doing...
>>
>> I ported some of Henrik's sub-pixel rendering code to 3.9.
>> Enough to get the fonts that he had produced to load, and display.
>> But, since his work was unfinished, there are some things which
>> don't work.
>> (This is not a criticism of Henrik, the comments in his code
>> indicate that
>> he was intending to work on these things).
>> Specifically, from Henrik's project notes...
>>     "No support for synthetic variants (emboldened, underline
>> etc.), nor
>> colored type.
>>      No bg color other than white in paragraphs (but in QuickPrint)
>>      Doesn't work properly in other than 32 bit display depth (for
>> Squeak)
>> because of BitBlt limitations. "
>>
>> The lack of support for coloured text means that it doesn't work
>> with Shout.
>> I am extremely reluctant to release/support 2 packages that don't
>> work with
>> each other.
>>
>> The production of the stretched character glyphs, in Henrik's code,
>> relied
>> on the Freetype library.
>> Other people are working on interfacing to Freetype (the Sophie
>> project, for
>> example), and I don't want to duplicate their efforts by 'doing my  
>> own
>> thing'.
>>
>> For the reason's above, I have started from a blank sheet, with
>> these goals.
>>     1. Must work with, or without, Freetype. (i.e. work with
>> exisiting TTF
>> support)
>>     2. Must support any foreground/background colour combination
>> (including
>> Transparency).
>>     3. Should work with any display depth (or at least with >= 8 bit)
>>     4. Would be nice to also fix the advance width problem (enable
>> glyphs to
>> overlap)
>>     5. Awareness of any patent issues.
>>         I don't know what we can/should do about those patent
>> issues, but at
>> least we can make informed decisions.
>>
>> I have made some progress on this...
>>
>>     I have created a new BitBlt mode that has a separate alpha
>> channel for
>> each rgb subcomponent.
>>         This enables Transparency/Translucency, and means that
>> there is no
>> need to cache separate glyphs per foreground colour.
>>         At the moment this only works with 32 bit display depth, and
>> requires a patched VM.
>>
>>     I can create stretched glyphs using the existing Balloon /TTF
>> rendering.
>>         These are still blurry (mainly in the vertical direction.
>> This is
>> due to no hinting/grid fitting).
>>         It is also very slow - I haven't improved the TTCFont
>> caching, so
>> the caches keep getting rebuilt.
>>
>>     I can fake the Freetype support by using Windows API to create
>> stretched/hinted/grid fitted glyphs.
>>         This works well, text is very clear, but there are issues
>> with some
>> italic glyphs becoming distorted.
>>         I think this is a bug in the Windows API.
>>
>>    I have researched the patents that apply in this area.
>>         So far I have uncovered 16 US, and 1 worldwide patent held/
>> applied
>> for by Microsoft.
>>
>> So, work is progressing, as time allows, but time is in short
>> supply at the
>> moment.
>>
>> I am deliberately hesitating before sharing any of this stuff, mainly
>> because of the patent issues,
>> but also because I want to get it working with Freetype first.
>>
>> More later...
>> Cheers,
>> Andy
>>
>> ----- Original Message -----
>> From: "stéphane ducasse" <ducasse at iam.unibe.ch>
>> To: "The general-purpose Squeak developers list"
>> <squeak-dev at lists.squeakfoundation.org>
>> Sent: Tuesday, March 21, 2006 7:43 AM
>> Subject: Henrik antialising
>>
>>
>>> Hi guys
>>>
>>> did one of you hear about andy tween the cool father of SHOUT.
>>> Way back he said that he was willing to harvest Henrik antialiasing
>>> font rendering.
>>> I tried to contact him but got no reply (may be a spam filter
>>> problem).
>>>
>>> Stef
>>>
>>>
>>
>
>
>