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

[Jorge Carrión]

This is off-topic, but yesterday went with my family to pick the almonds
from the trees -near 50 trees- ... and someone have stolen all of it... no
almonds this year for the family... buff


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...
>
> --
> Benoît Minisini
>
>
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