Opacity Scripting

[cwonderly]

I am experimenting with scripts that can mess with changing the opacity of layers and groups. I am calling upon information from a CSV file.

I was able to change the opacity of layers using the code below:

var variable1 = docRef.artLayers.getByName("testname");

variable1.textItem.contents = content[0];

var variable2 = docRef.artLayers.getByName("gray");

variable2.opacity = content[1];

var variable3 = docRef.artLayers.getByName("scarlet");

variable3.opacity = content[2];

var variable4 = docRef.artLayers.getByName("white");

variable4.opacity = content[3];

But when I tried to write it to change the opacity of groups I could not get it to work. Here is what I tried:

        var variable1 = docRef.artLayers.getByName("testname");

        variable1.textItem.contents = content[0];

        var variable2 = docRef.layers.getByName("gray");

        variable2.opacity = content[1];

        var variable3 = docRef.layers.getByName("scarlet");

        variable3.opacity = content[2];

        var variable4 = docRef.layers.getByName("white");

        variable4.opacity = content[3];

Any help would be greatly appreciated, thanks!

[Chuck Uebele]

Rather than using artLayers, just juse layers. Also you can't get nested layers with how you're doing it. You have to specify what parent group the other group is in.

[cwonderly]

So for the example where I am trying to change the opacity of the groups, I renamed the groups to scarlet, gray & white, that is why I am still calling for those names. I also used layers to try and do it like above, but it is not working.

[varDale_undefined]

var grp = app.activeDocument.layerSets.getByName("groupname");

grp.opacity = 50 // use desired number.

[cwonderly]

Hmm, that didn't work either. Maybe it will help if I post my full script as well as show my layers so here.

var docRef = app.activeDocument;

    var dlg = new Window('dialog', 'Dataset Photomerge',[100,100,480,250]);

    dlg.btnPnl = dlg.add('panel', [25,15,365,125], 'Run Merge');

    dlg.btnPnl.testBtn = dlg.btnPnl.add('button', [15,30,305,50], 'go', {name:'ok'});

    dlg.btnPnl.testBtn.onClick = dobuild;

    dlg.show()

function dobuild() {

        dlg.close();

        var list = File("/Users/wonderly.20/Desktop/opacitytest.csv");

        list.open("r");

        var str = list.readln();

        var content = str.split(',');

        while (!list.eof) {

        str = list.readln();

        content = str.split(',');

        var variable1 = docRef.artLayers.getByName("testname");

        variable1.textItem.contents = content[0];

        var grp1 = docRef.layerSets.getByName("gray");

        grp1.opacity = content[1];

        var grp2 = docRef.layerSets.getByName("scarlet");

        grp2.opacity = content[2];

        var grp3 = docRef.layerSets.getByName("white");

        grp3.opacity = content[3];

        saveJPEG( app.activeDocument, new File('/Users/wonderly.20/Desktop/completed/' + 'opacitytest-' + content[0] + '.jpg'), 12 );

      }

      dlg.close();

     alert("All done!");

      }

    function saveJPEG( doc, saveFile, qty ) {

      var saveOptions = new JPEGSaveOptions( );

      saveOptions.embedColorProfile = true;

      saveOptions.formatOptions = FormatOptions.STANDARDBASELINE;

      saveOptions.matte = MatteType.NONE;

      saveOptions.quality = qty;

      doc.saveAs( saveFile, saveOptions, true );

    }

[varDale_undefined]

Out of curiosity, if you manually set the opacity, like below:

        var grp1 = docRef.layerSets.getByName("gray");

        grp1.opacity = 50;

Without trying to read from the CSV file, does that work?

I have done a local test without issues, however your CSV file may be causing the issue. Personally I have never used a CSV file with JS & ESTK, I prefer to use .txt docs.

[Chuck Uebele]

Did you use this format?

var gray = docRef.layers.getByName("gray");

docRef.activeLayer = gray;

gray.opacity = 50;

[cwonderly]

Neither of these options worked. It is strange how I can get it to work perfectly with just changing the opacity of a layer but when I try to change the opacity of a group, it will not.

[Chuck Uebele]

Ummm, I'm not having any issue getting the layerrset to change. I get an error when I use artLayers rather than layers.

[cwonderly]

I am using layers instead of artLayers