Programmatically Assign Macro Connections?

[A Former User]

Is this possible yet? I remember posting about it a few years ago and couldn't find a solution.

There's MacroHandler.setMacroDataFromObject but I'm not sure how the JSON is supposed to look.

[d.healey]

@iamlamprey This will show you how the object should look

https://docs.hise.audio/scripting/scripting-api/macrohandler/index.html#getmacrodataobject

[A Former User]

@d-healey Ah it's in the ScriptingObjects::ScriptedMacroHandler::setFromCallbackArg function and called from the parent function, my eyes hurt

[A Former User]

Okay for anyone else wanting to do programmatic macro assignment for GUI elements:

// First you need to setup some stuff: 

const mh = Engine.createMacroHandler();
Engine.setFrontendMacros(["a", "b", "c", "d", "e", "f", "g", "h"]);
reg obj; // this will be what we pass to the function as an object

// To see the full JSON object: 

inline function getObject(component, value)
{
	// This button fetches our existing Macro connections object
	obj = mh.getMacroDataObject();
	
	Console.print(obj); // Insert a breakpoint here and inspect the ScriptWatchTable "obj" element.
};

Content.getComponent("Button1").setControlCallback(getObject);

The object looks like this:

{      
        "MacroIndex": 0, // zero-based macro index
	"Processor": "Interface", // the script processor we're working in (usually "Interface")
	"Attribute": "Knob1", // the name of the UI control
	"FullStart": 0.0, // the UI control's "min" value
	"FullEnd": 127.0, // the UI control's "max" value
	"Inverted": false, //  invert the connection
	"Interval": 0.0, // no idea
	"Skew": 1.0, // skew
	"Start": 0.0, // the macro control's "min"
	"End": 127.0 // the macro control's "max"  
}

Finally to assign your own custom macro stuff:

inline function assignMacro(componentName, index, fMin, fMax, min, max)
{
	local obj = {
		"MacroIndex" : index,
		"Processor" : "Interface",
		"Attribute" : componentName,
		"FullStart" : fMin,
		"FullEnd" : fMax,
		"Start" : min,
		"End" : max
	}

	mh.setMacroDataFromObject(obj);
}

NOTE: This will likely crash and brick your project if you do it INSIDE HISE. Compile it / export it to Rhapsody before trying to use the actual assignment function.

If you do brick your project, open the Preset.xml file and delete all the data in the Macro section

Eg:

<controlled_parameter id="Interface" parameter="155" parameter_name="knbFilterCutoff"
                            min="20.0" max="20000.0" low="20.0" high="20000.0" skew="0.266319563348789"
                            step="0.01" inverted="0" readonly="0" converter="37.nT6K8CBGgC..VEFa0U1Pu4lckIGckIG.ADPXiQWZ1UF.ADf..."/>