Auto-Fill Lasso Scripts for Photoshop.

ReadMe.md

Auto-Fill Lasso Scripts for Photoshop.

Devlog post on https://roguesleipnir.wordpress.com/2020/05/29/hacking-art-my-photoshop-lasso-auto-fill-script/ Ko-fi shop at https://ko-fi.com/s/0ad1accdd3

Installation

• Download ZIP link is at the top-right of this page.

• Extract the contents into a new folder called PluginLasso.

• Move the new PluginLasso folder to the same folder as your Photoshop Executable (Photoshop.exe).

• This is to avoid path conflicts with the folders on different Photoshop versions.

• Run with File > Scripts > Browse…

• Your Photoshop folder > PluginLasso > LassoAutoFillSetup.jsx.

• Activate/Deactivate event in File > Scripts > Script Event Manager... > Enable Events to Run Scripts/Actions > Done.

Usage

• Make sure the Tool is set to New Selection only, not other modes.
• Selection tools like Lasso, Marquee will auto-fill with the foreground color.
• Holding Shift while during a selection will cause auto-delete instead of auto-fill.
• Holding Ctrl while ending a selection will revert back to selection instead of fill/delete.
• This also prevents the Ctrl+A shortcut from filling everything.
• Feather selection options still work, use it to make gradients and blurred shapes.

Creating the Toggle Action

• In the Actions Panel (Window > Actions) (Alt + F9)
• Actions Panel > Click the New Action button
• Go to File > File > Scripts > Script Event Manager > Done
• Actions Panel > Click the Stop Recording button
• Double Click the newly created Action
• Rename it and Add a Function Key shortcut.
• This will open the Script Manager popup faster to enable/disable the lasso event.

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LassoAutoFillAction.jsx

try {
	// If bounds are null then there is no selection.
	// But null check fails? So use Try/Catch instead.
	if (app.activeDocument.selection.bounds) {
		// Check Shift Modifier
		SHIFT = ScriptUI.environment.keyboardState.shiftKey;
		CTRL = ScriptUI.environment.keyboardState.ctrlKey;
		
		// Fill manually.
		if (!(CTRL || SHIFT)) {
			app.activeDocument.selection.fill(app.foregroundColor);
			app.activeDocument.selection.deselect();

			// Can be used to play another action like "LassoShapes/LassoFill".
			// 'ActionSet/ActionId'

			// var actionExec = charIDToTypeID( "Ply " );
			//     var descriptor = new ActionDescriptor();
			//     var idNull = charIDToTypeID( "null" );
			//         var actionRef = new ActionReference();
			//         var actionId = charIDToTypeID( "Actn" );
			//         actionRef.putName( actionId, "LassoFill" );
			//         var idActionSet = charIDToTypeID( "ASet" );
			//         actionRef.putName( idActionSet, "LassoShapes" );
			//     descriptor.putReference( idNull, actionRef );
			// executeAction( actionExec, descriptor, DialogModes.NO );
		}
		else if (SHIFT) {
			var idDlt = charIDToTypeID( "Dlt " );
			executeAction( idDlt, undefined, DialogModes.NO );
			app.activeDocument.selection.deselect();
		}
		
	}
}
catch (exception) {
	
}

LassoAutoFillSetup.jsx

// Copy the scripts from the Photoshop folder
// To avoid any problems with the Plugins path per Photoshop version,
// create your own folder to reference here, 
// on the same folder as your Photoshop Executable file (Photoshop.exe) 
var eventFile = new File(app.path +  "/PluginLasso/LassoAutoFillAction.jsx")

// Add the notifier to the Script Event Manager.
// Apparently this doesn't work when done from the window because of a bug.
// You need to add the 'setd' event through this code.
app.notifiers.add("setd", eventFile)

The de-selection function seems to be disabled in PS 2025(the latest one atm), and holding Ctrl while ending a selection, which used to revert back to selection instead of filling or deleting, also doesn't work.