Canvas Wrap Script

Several years ago, I posted a script on Adode Exchange for a script to do a canvas wrap. Lately a few have noticed that the inch setting doesn't work. Rather than trying to figure out how to post a new release, I'm just posting the script here, as it's a free script. Use at your own risk.

//Written by Chuck Uebele
//Copyright 2014 all rights reserved
//Use at your own rist.

#target photoshop

var oldPref = app.preferences.rulerUnits
app.preferences.rulerUnits = Units.PIXELS;

var flat = false; //Flattens the image 
var size = .75; //Size of canvas wrap depth
var useInch = true; //set false to use cm
var showUI = true; //set false to not have the user interface appear
var run = false; 
var cm = 1;



if(app.documents.length>0){
    if(showUI){
        var dlg = new Window('dialog','Canvas Wrap');
        dlg.gp1 = dlg.add('group');
            dlg.gp1.orientation = 'row'
            dlg.gp1.sTxt = dlg.gp1.add('statictext',undefined,'Canvas Wrap Size:');
            dlg.gp1.eTxt = dlg.gp1.add('edittext',undefined,size);
                dlg.gp1.eTxt.onChange = function(){
                    textToNum(0,20,this,'float')
                    }
            
            dlg.gp1.eTxt.size = [50,18];
            dlg.flat = dlg.add('checkbox',undefined,'Flatten Image');
            dlg.gp1.inch = dlg.gp1.add('radiobutton',undefined,'inches');
            dlg.gp1.cm = dlg.gp1.add('radiobutton',undefined,'cm');
            dlg.btnGp = dlg.add('group');
            dlg.btnGp.ok = dlg.btnGp.add('button',undefined,'Okay');
            dlg.btnGp.cancel = dlg.btnGp.add('button',undefined,'cancel');
            dlg.gp1.inch.value = true
            
            dlg.btnGp.ok.onClick = function(){
                if(!isNaN (Number(dlg.gp1.eTxt.text))){
                    size = Number(dlg.gp1.eTxt.text);
                    run = true
                    if(dlg.gp1.cm.value){useInch = false}
                    flat = dlg.flat.value
                    dlg.close()
                    }
                }
            
            dlg.btnGp.cancel.onClick = function(){
                run = false
                dlg.close()
                }
        
        dlg.show() 
        }
    else{run = true}
    }
else{alert('There is no open document')}

if(run){     
    if(useInch){cm = 1}
    else{cm = 2.54}
    var doc = activeDocument;
    var res = doc.resolution;
    var actSize = Math.round(size/cm * doc.resolution);
    doc.activeLayer = doc.layers[0];
    var wrapLayer = doc.artLayers.add();
    stamp ();
    
    wrapLayer = doc.activeLayer
    wrapLayer.name = 'wrap'
    makeSel (0, 0, doc.width, actSize)
    dup ('Hght')
    var dupLayer = doc.activeLayer
    dupLayer.translate (0, -actSize)
    merge ()
        
    makeSel (0, doc.height-actSize, doc.width, doc.height)
    dup ('Hght')
    dupLayer = doc.activeLayer
    dupLayer.translate (0, actSize)
    merge ()
    doc.resizeCanvas(doc.width,doc.height + 2* actSize) 
    
    
    makeSel (0, 0, actSize, doc.height)
    dup ('Wdth')
    dupLayer = doc.activeLayer
    dupLayer.translate (-actSize,0)
    merge ()
    
    makeSel (doc.width-actSize, 0, doc.width, doc.height)
    dup ('Wdth')
    dupLayer = doc.activeLayer
    dupLayer.translate (actSize,0)
    merge ()
    doc.resizeCanvas(doc.width + 2* actSize,doc.height)
    //doc.trim();
    if (flat){doc.flatten()}
    }



app.preferences.rulerUnits = oldPref

function stamp(){
    var idMrgV = charIDToTypeID( "MrgV" );
        var desc3 = new ActionDescriptor();
        var idDplc = charIDToTypeID( "Dplc" );
        desc3.putBoolean( idDplc, true );
    executeAction( idMrgV, desc3, DialogModes.NO );    
    }

function makeSel(lft,tp,rt,bt){
    var area = [[lft,tp],[rt,tp],[rt,bt],[lft,bt]]
    doc.selection.select(area)
    };//end function makeSelection
    

function dup(orient){
    var idCpTL = charIDToTypeID( "CpTL" );
    executeAction( idCpTL, undefined, DialogModes.NO );
    //===========================================
    var idTrnf = charIDToTypeID( "Trnf" );
        var desc7 = new ActionDescriptor();
        var idnull = charIDToTypeID( "null" );
            var ref4 = new ActionReference();
            var idLyr = charIDToTypeID( "Lyr " );
            var idOrdn = charIDToTypeID( "Ordn" );
            var idTrgt = charIDToTypeID( "Trgt" );
            ref4.putEnumerated( idLyr, idOrdn, idTrgt );
        desc7.putReference( idnull, ref4 );
        var idFTcs = charIDToTypeID( "FTcs" );
        var idQCSt = charIDToTypeID( "QCSt" );
        var idQcsa = charIDToTypeID( "Qcsa" );
        desc7.putEnumerated( idFTcs, idQCSt, idQcsa );
        var idOfst = charIDToTypeID( "Ofst" );
            var desc8 = new ActionDescriptor();
            var idHrzn = charIDToTypeID( "Hrzn" );
            var idPxl = charIDToTypeID( "#Pxl" );
            desc8.putUnitDouble( idHrzn, idPxl, 0.000000 );
            var idVrtc = charIDToTypeID( "Vrtc" );
            var idPxl = charIDToTypeID( "#Pxl" );
            desc8.putUnitDouble( idVrtc, idPxl, 0.000000 );
        var idOfst = charIDToTypeID( "Ofst" );
        desc7.putObject( idOfst, idOfst, desc8 );
        var idHght = charIDToTypeID( orient );
        var idPrc = charIDToTypeID( "#Prc" );
        desc7.putUnitDouble( idHght, idPrc, -100.000000 );
        var idIntr = charIDToTypeID( "Intr" );
        var idIntp = charIDToTypeID( "Intp" );
        var idBcbc = charIDToTypeID( "Bcbc" );
        desc7.putEnumerated( idIntr, idIntp, idBcbc );
    executeAction( idTrnf, desc7, DialogModes.NO );

}

function merge(){
            var idMrgtwo = charIDToTypeID( "Mrg2" );
        var desc15 = new ActionDescriptor();
    executeAction( idMrgtwo, desc15, DialogModes.NO );
}

function textToNum(sMin,sMax,e,par){
	var sHold = sMin;
	
	if(par == 'int'){
		if(isNaN(parseInt(e.text))){
			alert('"' + e.text + '" is not a number\nEnter a value between ' + sMin + '-' + sMax );
			e.text = sMin};
		else{sHold = parseInt(e.text)
			if(sHold < sMin){
				rangeAlert();
				sHold = sMin;				
				};
			if(sHold > sMax){
				rangeAlert();
				sHold = sMax;
				};
			e.text = sHold;
			};	//end else
		};//end if par
	else{
		if(isNaN(parseFloat(e.text))){
			alert('"' + e.text + '" is not a number\nEnter a value between ' + sMin + '-' + sMax );
			e.text = sMin};
		else{sHold = parseFloat(e.text)
			if(sHold < sMin){
				rangeAlert();
				sHold = sMin;
				};
			if(sHold > sMax){
				rangeAlert();
				sHold = sMax;
				};
			e.text = sHold;
			};	//end else
		};//end else par
	function rangeAlert(){alert('Number range must be between ' + sMin + '-' + sMax)}; 
};//end function textToNum