Photoshop Script - create merged before and after image

side-by-side-images.jsx

// Created by Chris Reber - chris@meta13.com

// enable double clicking from the Macintosh Finder or the Windows Explorer
#target photoshop


// Settings
var maxHeight = 600;


// Script below:


// Initialize variables
var firstId = '';
var secondId = '';
var mergedId = '';
var firstName = "";
var secondName = "";
var firstWidth = "";
var firstHeight = "";
var secondWidth = "";
var secondHeight = "";
var largestHeight = "";
var totalWidth = "";
var newdocwidth = "";

var mergedName = "";
var theFolder = Folder.selectDialog ("select folder");
var theContent = theFolder.getFiles(/.+\.(?:gif|JPG|[ew]mf|eps|tiff?|psd|pdf|bmp|png)$/i);
var secondContent = theFolder.getFiles(/.+\.(?:gif|JPG|[ew]mf|eps|tiff?|psd|pdf|bmp|png)$/i);
var doc = '';
var docPath = '';

// Open all images in photoshop
for (var i = 0; i < theContent.length; i++) {
	var theObject = theContent[i];
	// open(theObject);
	if (theContent[i] instanceof File) {
		open(theObject);

		// get a reference to the current (active) document and store it in a variable named "doc"
		var doc = app.activeDocument;
		var docPath = doc.path+'/merged';

		// change the color mode to RGB.  Important for resizing GIFs with indexed colors, to get better results
		doc.changeMode(ChangeMode.RGB);

		// Create web folder
		var f = new Folder(doc.path+'/merged');
			if (!f.exists) {
			f.create();
			}
		var active = app.activeDocument;
		var activeName = active.name;
	}

}
      // get a reference to the current (active) document and store it in a variable named "doc"
      var doc = app.activeDocument;
loopThroughActiveDocuments();

function loopThroughActiveDocuments(firstName) {
	var firstName = app.activeDocument.name;
	var mergedName = firstName;
	if (firstName.indexOf("after") >= 0) {
		var secondName = firstName.replace("after", "before");
		var mergedName = firstName.replace("after", "merged");
	} else if (firstName.indexOf("before") >= 0) {
		var secondName = firstName.replace("before", "after");
		var mergedName = firstName.replace("before", "merged");
	} else if (firstName.indexOf("After") >= 0) {
		var secondName = firstName.replace("After", "Before");
		var mergedName = firstName.replace("After", "merged");
	} else if (firstName.indexOf("Before") >= 0) {
		var secondName = firstName.replace("Before", "After");
		var mergedName = firstName.replace("Before", "merged");
	} else if (firstName.indexOf("AFTER") >= 0) {
		var secondName = firstName.replace("AFTER", "BEFORE");
		var mergedName = firstName.replace("AFTER", "merged");
	} else if (firstName.indexOf("BEFORE") >= 0) {
		var secondName = firstName.replace("BEFORE", "AFTER");
		var mergedName = firstName.replace("BEFORE", "merged");
	} else {
		alert(
			'Matching Image not found, check names so there is a /"before/" and /"after/" name ' +
			'\n' +
			"First name: " +
			firstName +
			'\n'+
			"Matching name: " +
			secondName
		);
	}


	// get Current ID
	for (var i = 0; i < app.documents.length; i++) {

		if(app.documents[i].name == firstName) {
			firstId = app.documents[i];
			app.activeDocument = firstId;
			app.documents[i].resizeImage(null,UnitValue(maxHeight,"px"),72,ResampleMethod.BICUBIC);
			firstWidth = app.documents[i].width;
			firstHeight = app.documents[i].height;
		} else if(app.documents[i].name == secondName) {
			secondId = app.documents[i];
			app.activeDocument = secondId;
			app.documents[i].resizeImage(null,UnitValue(maxHeight,"px"),72,ResampleMethod.BICUBIC);
			secondWidth = app.documents[i].width;
			secondHeight = app.documents[i].height;
			app.activeDocument = app.documents[i];
		}
	}

	createNewMergedImage();
	function createNewMergedImage() {
		totalWidth = firstWidth + secondWidth;
		app.documents.add(totalWidth, maxHeight, 72, mergedName, NewDocumentMode.RGB, DocumentFill.TRANSPARENT, 1);
		newdocwidth = app.activeDocument.width;
		mergedId = app.activeDocument;

	}

	var selRegion = Array();
	var selRegionSecond = Array();


	if (firstName.indexOf("After") >= 0) {
		var selRegion = Array(
			Array(firstWidth, 0),
			Array(totalWidth, 0),
			Array(totalWidth, maxHeight),
			Array(firstWidth, maxHeight),
			Array(firstWidth, 0))

		var selRegionSecond = Array(
			Array(0, 0),
			Array(secondWidth, 0),
			Array(secondWidth, maxHeight),
			Array(0, maxHeight),
			Array(0, 0))
		copyImage(firstId, selRegion);
		copyImage(secondId, selRegionSecond);
	} else if (firstName.indexOf("after") >= 0) {
		var selRegion = Array(
			Array(firstWidth, 0),
			Array(totalWidth, 0),
			Array(totalWidth, maxHeight),
			Array(firstWidth, maxHeight),
			Array(firstWidth, 0))

		var selRegionSecond = Array(
			Array(0, 0),
			Array(secondWidth, 0),
			Array(secondWidth, maxHeight),
			Array(0, maxHeight),
			Array(0, 0))
		copyImage(firstId, selRegion);
		copyImage(secondId, selRegionSecond);
	} else if (firstName.indexOf("AFTER") >= 0) {
		var selRegion = Array(
			Array(firstWidth, 0),
			Array(totalWidth, 0),
			Array(totalWidth, maxHeight),
			Array(firstWidth, maxHeight),
			Array(firstWidth, 0))

		var selRegionSecond = Array(
			Array(0, 0),
			Array(secondWidth, 0),
			Array(secondWidth, maxHeight),
			Array(0, maxHeight),
			Array(0, 0))
		copyImage(firstId, selRegion);
		copyImage(secondId, selRegionSecond);
	} else {
		var selRegion = Array(
			Array(0, 0),
			Array(firstWidth, 0),
			Array(firstWidth, maxHeight),
			Array(0, maxHeight),
			Array(0, 0))

		var selRegionSecond = Array(
			Array(firstWidth, 0),
			Array(totalWidth, 0),
			Array(totalWidth, maxHeight),
			Array(firstWidth, maxHeight),
			Array(firstWidth, 0))
		copyImage(firstId, selRegion);
		copyImage(secondId, selRegionSecond);
	}

	// Copy Images into merged image
	function copyImage(imageID, imageRegion) {

		app.activeDocument = imageID;
		app.activeDocument.selection.selectAll();
		app.activeDocument.selection.copy();
		app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);
		app.activeDocument = mergedId;

		app.activeDocument.selection.select(imageRegion);
		app.activeDocument.paste();
	}

	setupBoxes();
	addText();
	saveDoc();
}

function saveDoc() {
	app.activeDocument.flatten();

	// our web export options
	var options = new ExportOptionsSaveForWeb();
	options.quality = 100;
	options.format = SaveDocumentType.JPEG;
	options.optimized = true;

	var name = app.activeDocument.name;
	if (name.toLowerCase().slice(-4) == ".png" || name.toLowerCase().slice(-4) == ".jpg" || name.toLowerCase().slice(-4 == ".psd")) {
		name = name.slice(0, -4);
	}

	var newName = name+'.jpg';

	app.activeDocument.exportDocument(File(docPath+'/'+newName),ExportType.SAVEFORWEB,options);
	app.activeDocument.close(SaveOptions.DONOTSAVECHANGES);

	if(app.documents.length) {
		loopThroughActiveDocuments();
	}
}


function addText() {
	// Add Text
	var docWidth = app.activeDocument.width;
	var docWidthCalc = docWidth - 120;

	// Before text
	textSettings();
	app.activeDocument.activeLayer.textItem.contents="Before";
	app.activeDocument.activeLayer.textItem.position = Array(20, 44 );

	// After text
	textSettings();
	app.activeDocument.activeLayer.textItem.contents="After";
	app.activeDocument.activeLayer.textItem.position = Array(docWidthCalc, 44);
}

function textSettings() {
	var myTextLayer = app.activeDocument.artLayers.add();
	myTextLayer.kind = LayerKind.TEXT;

	var textColour = new SolidColor();
	//set colour
	textColour.rgb.hexValue="ffffff";
	//set font
	app.activeDocument.activeLayer.textItem.font = "Georgia";
	// set font size
	app.activeDocument.activeLayer.textItem.size = "40pt";
	//set colour
	app.activeDocument.activeLayer.textItem.color = textColour;
}


function setupBoxes() {
	// X,Y
	// Put the coordinates in clockwise order

	var boxWidth = 160;
	var boxHeight = 60;
	var boxOpacity = 60;

	var docWidth = app.activeDocument.width;
	var cleanDocWidth = parseInt(docWidth, 10);


	// Draw before rectangle
	DrawShape(
		[0, 0],
		[boxWidth, 0],
		[boxWidth, boxHeight],
		[0, boxHeight]);
		app.activeDocument.activeLayer.opacity = boxOpacity;

	// Draw after rectangle
	DrawShape(
		[cleanDocWidth - boxWidth, 0],
		[cleanDocWidth, 0],
		[cleanDocWidth, boxHeight],
		[cleanDocWidth - boxWidth, boxHeight]);
		app.activeDocument.layers.getByName("Color Fill 2").opacity = boxOpacity;
}


/* Code by  Mike Hale http://www.ps-scripts.com/bb/viewtopic.php?f=14&t=1802&start=15
with small modification by Vladimir Carrer
*/

function DrawShape() {

    var doc = app.activeDocument;
    var y = arguments.length;
    var i = 0;

    var lineArray = [];
    for (i = 0; i < y; i++) {
        lineArray[i] = new PathPointInfo;
        lineArray[i].kind = PointKind.CORNERPOINT;
        lineArray[i].anchor = arguments[i];
        lineArray[i].leftDirection = lineArray[i].anchor;
        lineArray[i].rightDirection = lineArray[i].anchor;
    }

    var lineSubPathArray = new SubPathInfo();
    lineSubPathArray.closed = true;
    lineSubPathArray.operation = ShapeOperation.SHAPEADD;
    lineSubPathArray.entireSubPath = lineArray;
    var myPathItem = doc.pathItems.add("myPath", [lineSubPathArray]);


    var desc88 = new ActionDescriptor();
    var ref60 = new ActionReference();
    ref60.putClass(stringIDToTypeID("contentLayer"));
    desc88.putReference(charIDToTypeID("null"), ref60);
    var desc89 = new ActionDescriptor();
    var desc90 = new ActionDescriptor();
    var desc91 = new ActionDescriptor();
    desc91.putDouble(charIDToTypeID("Rd  "), 0.000000); // R
    desc91.putDouble(charIDToTypeID("Grn "), 0.000000); // G
    desc91.putDouble(charIDToTypeID("Bl  "), 0.000000); // B
    var id481 = charIDToTypeID("RGBC");
    desc90.putObject(charIDToTypeID("Clr "), id481, desc91);
    desc89.putObject(charIDToTypeID("Type"), stringIDToTypeID("solidColorLayer"), desc90);
    desc88.putObject(charIDToTypeID("Usng"), stringIDToTypeID("contentLayer"), desc89);
    executeAction(charIDToTypeID("Mk  "), desc88, DialogModes.NO);

    myPathItem.remove();
}