[Gambas-user] [Gambas Bug Tracker] Bug #753: Rich text editor

[Benoît Minisini]

Le 22/09/2015 18:37, Fabien Bodard a écrit :
> 2015-09-22 18:32 GMT+02:00 Benoît Minisini <gambas at ...1...>:
>> Le 22/09/2015 18:22, Fabien Bodard a écrit :
>>> 2015-09-22 18:08 GMT+02:00 Benoît Minisini <gambas at ...1...>:
>>>> Le 22/09/2015 18:03, Benoît Minisini a écrit :
>>>>> Le 22/09/2015 17:49, Moviga Technologies a écrit :
>>>>>>> yes :-)... and maybe with a better synthax. But for that i think you
>>>>>>> will wait or do it yourself.
>>>>>>
>>>>>> (Since you reply by mail, and not in the bugtracker, I reply you also by
>>>>>> mail)
>>>>>>
>>>>>> I am afraid my competence is not enough to undertake such a task. I have
>>>>>> been trying to look at the gb.form.editor code, and it is a bit hard to
>>>>>> get a hold on, and there are very few comments explaining what is going
>>>>>> on.
>>>>>>
>>>>>
>>>>> It won't help you a lot. TextEditor is really made and optimized for
>>>>> displaying and editing text using a monospace font. Automatic
>>>>> line-breaking was added recently, and is a sort of hack.
>>>>>
>>>>> Making a rich-text editor is a bit like programming something like
>>>>> LibreOffice Writer, with less features.
>>>>>
>>>>> You must have paragraphs, using any font, size, colours, style...
>>>>> applied to any group of characters in the paragraph.
>>>>>
>>>>> Then you need a layouting routine that handle where and how to display
>>>>> paragraph.
>>>>>
>>>>> Then you need to display a cursor, the selected text.
>>>>>
>>>>> You need to be able to transform any mouse position in the editor window
>>>>> into a position in the text.
>>>>>
>>>>> You have to implement an undo/redo system.
>>>>>
>>>>> Only the rest is similar to what exists in TextEditor: keyboard
>>>>> handling, shortcuts, saving and loading. It's the simpler.
>>>>>
>>>>> Maybe if I have time I will make a library that implement the paragraph
>>>>> stuff on top of a vectorial canvas (i.e. a sort of DrawingArea that
>>>>> contains vectorial objects).
>>>>>
>>>>> It's interesting to have a "canvas" layer between the paragraphs and the
>>>>> final ScrollArea. Because after you can "easily" add other objects, like
>>>>> images, tables, vectorial drawings... until you have a real text processor.
>>>>>
>>>>> Interesting project if you have at least six months.
>>>>>
>>> 5 years for me
>>>>
>>>> And there is (of course) many technical problems like : displaying fonts
>>>> correctly in all situations when format changes. LibreOffice is now able
>>>> to do that yet.
>>>>
>>>> For example, Gambas paint methods need more feature to be able to
>>>> displaying text using no hinting whatever how the font system is configured.
>>>>
>>>> And you need handle right-to-left languages too!
>>>>
>>>> And you need to handle paragraphs having left-to-right and right-to-left
>>>> languages mixed!
>>>>
>>>> ...etc.
>>> Well i will concentrate my effort on my term :-) for now.
>>>
>>> ... and grappe cutting because it's time... 3 weeks of hard work at least.
>>
>>
>> Good luck! With my family we have just picked almost half a ton of
>> apples on just three apple trees. It's time too...
>
> Well so now you have just to press it... fermenting apple juce to
> obtain cider... distillate it and you will have a fabulous Calva !!
> :-P hip!... i love Calva !
>

My father makes apple juice, and put them in the freezer. I think he 
must not really like cider, otherwise he would make it. And I never saw 
him drink calva. Mostly wine.

-- 
Benoît Minisini