Linebreaking

[khaledhosny]

No description provided.

[khaledhosny]

@brawer Can you test this, it should be more stable now. One important change in the client code is to use raqm_glyph_t.x and raqm_glyph_t.y which provide absolute glyph positions instead of calculating them from glyph advances and offsets.

[molikto]

What's needed to make this into master? Also I think it should be easy to add different font size settings for each glyph? I might do this...

After more thought, layout is very application dependent, so even if this is merged, one might not able to use it directly without modification.

[houqp]

After more thought, layout is very application dependent, so even if this is merged, one might not able to use it directly without modification.

@molikto could you give an example on why extra application logic is needed to determine the line breaks?

[Benau]

Hello,
I plan to use this for supertuxkart for proper unicode line breaking + emoji support, any chance will this be merged soon (or is there something I can help?)

[Benau]

seems that it is better to do in stk level anyway...

btw is there some way to tell inside a glyph there is character in cluster breakable? For example "ff" or "fl"

[khaledhosny]

No

Hello,
I plan to use this for supertuxkart for proper unicode line breaking + emoji support, any chance will this be merged soon (or is there something I can help?)

No one is currently working on this code and it isn’t very well tested either.

[khaledhosny]

btw is there some way to tell inside a glyph there is character in cluster breakable? For example "ff" or "fl"

Not sure I get the question, can you elaborate on what you are trying to do.

[Benau]

sorry bad english, i was trying for "cursor movement" in editbox, for example if i press left button around the "fi" glyph, is there some way to tell it should stop between f and i in the glyph? Because we are using old editbox in stk which has no text shaping (it assumes 1 word per glyph)

[Benau]

also because i need to take emoji glyph into account(which i think it should be taken as 1 word, for example 2 letter country flag)

[adrientetar]

You can use harfbuzz cluster value for that purpose https://harfbuzz.github.io/clusters.html#clusters-and-shaping

[khaledhosny]

For drawing the cursor, you can use raqm_index_to_position(). For getting the character index at a given position, you can use raqm_position_to_index().