B4A Library RichString library.

brainfart

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Feature request. (If possible naturally):sign0147:
Add method to load RTF (rich text format) file and pass the formatting to a multi-line label.
I am trying to write a help file/user manual and embed it in my application.
The easiest way to write and then maintain a user manual with bold headings, underlines and italics would be to use word editing tool and saving it to file, then adding it to resources in the app.
I am trying to avoid using WebView because of INTERNET permission which turns off a lot of potential down-loaders before they read fine print from me explaining that I do not use their data plan.

Thanks.
 
Last edited:

agraham

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Add method to load RTF (rich text format) file and pass the formatting to a multi-line label.
There's no point in putting that in a library, it could just as well be implemented in a Code module with no loss of performance and more flexibilty in being able to modify it. I leave the challenge of the implementation to you.
 

reeZZer

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Hello agraham,

thank you very much for his excellent Library , my Chat has now COLORS :sign0060:

But i see that this only works for Labels and EditText i think, would it be possible to change the color of a specific Text in a Listview?

I show the Userlist over Liestview and would like to color specific names like this:
rs.Initialize("{U}Username{U}")
rs.Color2(Colors.Blue, "{U}")
UserList.AddSingleLine(rs)

but that don't work , any other format is the same result.

Thank in advance !

Keep up the good work.

greeTz,
reeZZer
 

quimacama

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I can't show more than one superscript?

I have this code

Dim rs As RichString
Dim rsb As RichStringBuilder

rsb.Initialize
rsb.Append ("(2{superscript}3{superscript}) ")
rsb.Append ("(3{superscript}2{superscript}) ")
rsb.Append ("(5{superscript}4{superscript}) ")
rs.Initialize(rsb)
rs.Superscript2( "{superscript}")
label.Text= rs

but the result in the label is (2³)*(3{superscript}2)*(54{superscript})


What can I do?
 

agraham

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Shorten your tokens
.
B4X:
rsb.Initialize 
rsb.Append ("(2{SUP}3{SUP}) ")
rsb.Append ("(3{SUP}2{SUP}) ")
rsb.Append ("(5{SUP}4{SUP}) ")
rs.Initialize(rsb) 
rs.Superscript2( "{SUP}")
It is failing because you are superscripting a single character and the token recognition is failing. Longer superscripted sequences will work with longer tokens. Unfortunately I can't immediately see why this happens but it looks like the length of the token must be less than (length of the formatted span + 5)
 

peacemaker

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There's no point in putting that in a library, it could just as well be implemented in a Code module with no loss of performance and more flexibilty in being able to modify it. I leave the challenge of the implementation to you.

Does it mean to parse RTF file format, re-formatting loaded text by RichString lib line-by-line ... ?
 

imgsimonebiliato

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Hi agraham,
may thanks for your useful library.
Please, can you help me? I want to set this code:

rs.Initialize("{BI}{C}{U}COMMESSA{U}{C}{BI}")
rs.Color2( Colors.Cyan, "{C}" )
rs.Underscore2("{U}")
rs.Style2( rs.STYLE_BOLD, "{BI}" )

to other 10 label.text, changing "COMMESSA" with other.
Who can I do, without re-write the same code all times?
 

imgsimonebiliato

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Hi Erel,
like a function? I've just tried it, but without success
 

imgsimonebiliato

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I did it. Many thanks!!! :sign0188:
:sign0098:
 

Discorez

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Erel, it is possible to show the caret for colorized text, if RichString used with EditText?
 

Discorez

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For example, as code editor with syntax highlighting, or display errors for check spelling. The Rich text also should "participate" in editing - the caret and selection color, copy/paste, e.t.c.
It is possible to create better an independent class - RichEditText?
 

mjtaryan

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More brainstorming...


Might it not be possible to create a "library" of keyboard symbols (or combinations of symbols) that represent certain things? I'm expanding from the {R} in an earlier post. For example ^This is Bold^, !This is Italic! and ~This is Underline~ where combining the enclosing symbols (i.e. ^~) would likewise combine the effect. Perhaps I'm taking out of turn because I haven't yet looked at the library. Also, it would be nice to be able to load and display a pre-formatted RTF file.
 
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