[webkit-dev] Safari and complex script rendering

[Sherif]

Thank you Mohamed for your comment.
It is not implementing a complex script but implementing the shaping.
If you claim, that it is closed, how did the other webcore exist.

Why i can't?
The source code is available.


Mohammed Sameer wrote:
> 1) WebKit itself supports complex script rendering.
> 2) The iPhone edition of WebKit does not support complex scripts.
> 3) You can't fix the iPhone problem because it's closed and no one can do it but Apple.
> 4) There's nothing you or we can do to fix the iPhone.
> 5) Implementing complex scripts support is not easy as plugging some code into a function.
>
> On Sun, Sep 28, 2008 at 12:37:19PM +0200, Sherif wrote:
>   
>> Thank you guys for your comments.
>> There is a software in the market that installs an edited version of the  
>> webcore that makes such letter shaping but its very expensive.
>> Please find the attached code, i would like to embed it some where when  
>> the html page is loaded to shape the words together.
>> It would be greate if somebody guys can point me to the correct function  
>> to plug the code in.
>>
>> regards,
>> Sherif
>>
>>
>>
>>
>> Maciej Stachowiak wrote:
>>     
>>> On Sep 28, 2008, at 1:15 AM, Paul Pedriana wrote:
>>>
>>>   
>>>       
>>>>>> ... this is not a WebCore issue, so there is nothing you can do
>>>>>>         
>>>>>>             
>>>> in WebCore to fix it.
>>>>
>>>> When I look at WebCore's WidthIterator::advance function, it doesn't
>>>> seem to me to be savvy to complex script. It looks to me like it walks
>>>> through a Unicode string and replaces character clusters with   
>>>> individual
>>>> glyphs. This approach works for most scripts but not complex scripts
>>>> such as Arabic and Devanagari. The problem, as you may well be   
>>>> aware, is
>>>> that there are many OpenType-directed substitutions, ligations, and
>>>> "un-ligations." This is unrelated to Arabic's RTL nature unrelated to
>>>> simply contextual alternates resulting from cursiveness. It seems to  
>>>> me
>>>> that complex script would have to be supported by something other than
>>>> WidthIterator::advance (is it?).
>>>>
>>>> If WebCore (or WebKit in general) supports complex script correctly   
>>>> then
>>>> I wonder what I am missing regarding the above statements.
>>>>     
>>>>         
>>> WebKit on Mac and Windows (and perhaps other ports, haven't tested)   
>>> supports complex scripts such as Arabic. But not (currently) the   
>>> iPhone port.
>>>
>>> Regards,
>>> Maciej
>>>
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>>>
>>>   
>>>       
>
>
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