Re: [Hydrogen-devel] programming H2 ... sort of :-)

[Thijs v. s. <thi...@gm...>]

hi all

so i think i managed to set up everything to create and push an event, but
i'm not quite there yet

in SongEditor.cpp i have added some lines that should draw a .png (using
drawPixmap) based on the bNext flag
I added some debug, did lots of tests and it looks like this part of the
code is executed when i expect it to, but the gui does not update at that
same moment  :-(
i have the feeling that the actual gui update is done somewhere else, but i
cant figure out how that happens

all help is welcome !

grtz
Thijs

2017-01-20 18:02 GMT+01:00 <ma...@sm...>:

> Hi Thijs!
>
> Great to see that you're starting to play around with the code.
>
> About your gui update problem: There is a event mechanism which enables
> the core of hydrogen to notify the user interface about any changes.
> Have a look at pull request 460 (https://github.com/hydrogen-m
> usic/hydrogen/pull/460),
> it is an example of how to refresh a part of the user interface after a
> midi event
> has happened.
>
> Best regards and happy hacking,
> Sebastian
>
>
>
> Am 20.01.2017 17:42, schrieb Thijs van severen:
>
>> Hi guys !
>>
>> i have just created a ticket for an enhancement that would really make
>> my life a lot easier
>> (see https://github.com/hydrogen-music/hydrogen/issues/471 [1])
>>
>> i'm actually trying to have a go at it, but i'm a bit stuck :-)
>>
>> So far i have figured out that void SongEditor::createBackground() in
>> SongEditor.cpp does the actual gui update, but it seems that it is
>> only called when the pattern loops
>> i have no clue how i can trigger this gui update when a
>> select_next_pattern midi message is recieved
>>
>> I have also found out that when you send a midi select_next_pattern
>> message to H2 this triggers the MidiActionManager::select_next_pattern
>> function in midi_actions.cpp
>> if i could trigger the gui update from here i might be able to make
>> this work
>>
>> any ideas ?
>>
>> grtz
>> Thijs--
>>
>> follow me on my Audio & Linux blog
>> <http://audio-and-linux.blogspot.com/ [2]> !
>>
>>
>>
>> Links:
>> ------
>> [1] https://github.com/hydrogen-music/hydrogen/issues/471
>> [2] http://audio-and-linux.blogspot.com/
>>
>


-- 
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