Script auto make selection snap to added guides line

Question

I need a script for photoshop which can create a square or rectangular selection (use rectangular marquee tool) and it will snap to the guides line, no matter the position of the guides, sometimes with 2 guides sometimes I will add 4 guides. Or it'll be ok if the script make a selection from the guide to the bottom of the photo.

make selection snap to guides

Here are some other options that I'm expecting make selection 1 make selection 2

Answer 1

Here script that creates a rectangular selection:

// Get the active document
var doc = app.activeDocument;

// Get the guides
var guides = doc.guides;

// Get the first horizontal and vertical guides
var hGuide1 = guides[0];
var vGuide1 = guides[1];

// Get the second horizontal and vertical guides (if they exist)
var hGuide2 = guides.length > 2 ? guides[2] : null;
var vGuide2 = guides.length > 3 ? guides[3] : null;

// Calculate the selection coordinates based on the guides
var x1 = vGuide1.direction == Direction.VERTICAL ? vGuide1.coordinate : hGuide1.coordinate;
var y1 = hGuide1.direction == Direction.HORIZONTAL ? hGuide1.coordinate : vGuide1.coordinate;
var x2 = vGuide2 != null && vGuide2.direction == Direction.VERTICAL ? vGuide2.coordinate : doc.width.as("px");
var y2 = hGuide2 != null && hGuide2.direction == Direction.HORIZONTAL ? hGuide2.coordinate : doc.height.as("px");

// Create the rectangular selection
doc.selection.select([[x1, y1], [x2, y1], [x2, y2], [x1, y2]], SelectionType.REPLACE, 0, false);

To run it, create a file with the extension jsx. For example: script.jsx

Then File->Scripts->Browse... select the file script.jsx