Text rendering of Unicode text in LC

Richmond Mathewson richmondmathewson at gmail.com
Mon Aug 13 15:24:05 EDT 2018


I've just had a look at you sample: 
https://spark.adobe.com/page/clCst4mdUu8Jy/

and I have to admit that plain-bold apparently random alternation is 
pretty pug-ugly.

I don't know HOW you are getting the Chinese characters to show up, and 
as your sample
does not contain selectable text I cannot "go backwards for Christmas" 
and work out
what the Unicode addresses of some of those glyphs are.

My own experience with Unicode in LiveCode has been confined to Indic, 
Slavic and Old English
alphabetic forms and I have always ended up with "proper" anti-aliased 
true type representation.

---

At the risk of being seen as extremely goofy . . .

Are ALL your Chinese characters contained in a single font?

[Even though that is claimed on the page]

------

Certainly IFF all your Chinese characters are contained in a single font 
and are
NOT differently weighted (i.e. some are not BOLD while others are not)
I don't think LiveCode should be at fault.

What makes things a bit awkward is how your text images online are 
generated . . .

If you were to export a PNG or JPEG image from your textField inwith 
your LiveCode stack
you would get an EXACT representation of what the field looked like.

My experience of exporting a field as HTMLtext has also always been 
positive as long
as the font of the resultant HTML page is a webfont derived from the 
font used inwith LiveCode.

--------
I won't pretend to understand what you say about Skia.

But I do wonder why there has to be anything between LiveCode and your 
web representation.

-----
I, also, don't understand the necessity for Adobe Spark.

But I'm one of those people who like to keep things simple.

This: http://andregarzia.on-rev.com/richmond/dwriterpro.html

contains NOTHING more than simple images rendered out of a LiveCode 
stack as screenshots from a textField.

Richmond.

On 13/8/2018 10:02 pm, Peter Bogdanoff via use-livecode wrote:
> To follow up with my question from yesterday…and to continue with Biblical allusions others have begun…
>
> I’ve descended into <font> hell, which I’m trying get out with some light from LiveCode Mark!
>
> To recap, the rendering of Chinese characters in Windows 10 is willy-nilly through different versions of LC. Earlier versions display bitmap glyphs, later versions display drawn characters. Now in LC 9.0 it displays a MIX of apparent bold and plain of characters all set identically.
>
> Examples:
> https://spark.adobe.com/page/clCst4mdUu8Jy/ <https://spark.adobe.com/page/clCst4mdUu8Jy/>
>
> What’s going on here? Bugs?
>
> My personal situation—this is a multi-year project that includes one of the two largest academic book publishers in China who are looking to our project as the vanguard of digital publishing in their country. They are looking at this text display and saying, “we can’t publish this.” Now, they want to show it at a publishing conference...
>
> The Chinese translators say the bitmap text is great, but the anti-aliased rendered text is unusable. And everyone there has Windows. We with roman-text eyes don’t necessarily see a problem; they with Chinese character eyes are very particular.
>
> I’m supposing this is Skia doing the work (with the harfbuzz text shaping library?)?? If true, I see from the Skin/harfbuzz documentation on Font Embedded Bitmaps:
>
> "bool isEmbeddedBitmapText() const
> Returns true if Font Engine may return Glyphs from font bitmaps instead of from outlines.”
>
> https://skia.org/user/api/SkPaint_Reference#Subpixel_Text
>
>
> Can there be a font property option to display just the bitmap? Or are there other fixes that can be made?
>
> Peter Bogdanoff
> ArtsInteractive
>
>> On Aug 12, 2018, at 4:15 PM, Peter Bogdanoff via use-livecode <use-livecode at lists.runrev.com> wrote:
>>
>> Songti SC Regular
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