584
edits
Changes
Jump to navigation
Jump to search
Line 34:
Line 34: + + + + + + + + + + + + + + + + + + + + + + + + + +
Zynthian GUI start up walkthrou' (view source)
Revision as of 17:31, 4 September 2021
, 17:31, 4 September 2021→The Zynthian GUI start process
*splash_zynthian
*splash_zynthian
*splash_zynthian_error
*splash_zynthian_error
Now these are fairly low level functionality and try to helpfully display some information in case the GUI doesn't start for some reason, like machine IP address ( a well known bootstrap problem in that if you don't know the machine address how can you point a terminal at it to configure it with it's IP address...?). So that if your zynth doesnt start you can ssh into it to examine quite why start up has failed ( It's normally jackd whinging about something...:-) )
Once that load_config_env has loaded up all the environmental variables that hold the actual state of a zynthian. It's all in there and is used to define the context that the zynthian runs under.
Quite how a specific environment file is exposed to this process depends on the config, so mechansisms like MIDI configs define these states depending on wether or not a user has defined their own specific MIDI configuration or indeed several. Zynthian is basically a device for starting and stopping jack instruments and interacting with the engines once they are running.
The GUI controls those interactions.
We then start up the python file
/zynthian/zynthian-ui/zynthian_gui.py
This module primarily defines the zynthian_gui class object with a few tkinter helper functions
and this is what actually handles all the GUI interaction and functionality.
It's about 2000 lines of code and after all this definition
At line 1775 or there abouts we get
* logging.info("STARTING ZYNTHIAN-UI ...")
Always good to log and use the python logging infrastructure.
* zynthian_gui_config.zyngui=zyngui=zynthian_gui()
Some name binding for maintaining different names spaces or some possibly more nefereous purpose, before running
* zyngui.start()
This method of the zynthian_gui class configures the GUI environment ready to start.