Event Listener to check RGB Image(s) in InDesign and illustrator

[code_seeeeeker]

Hi,

I'm trying to create an Event Listener to use in Adobe InDesign, to alert me if the document contains RGB images. I tried this, but this is not working. Can you please correct the code for me. Also I want the same listener for Illustrator as well.

//DESCRIPTION: Event Listener to check if the document contains any RGB images
#targetengine "save"
app.addEventListener("beforeSave", function () {
    var doc = app.documents[0];
    for (var i = 0; i < doc.allGraphics.length; i++) {
        try {
            var img = doc.allGraphics[i];

            // Only check raster images (e.g., JPEG, PNG, TIFF)
            if (img.constructor.name === "Image") {
                if (img.imageColorSpace === ColorSpace.RGB) {
                    alert("Document contains RGB image(s). Please convert them to CMYK!");
                    break;
                }
            }
        } catch (e) {
            // Handle errors silently
        }
    }
});

[rob day]

Hi @code_seeeeeker , there is no .imageColorSpace property for an image or graphic object—you should see the error if you remove the try statement.

If you want to check for RGB objects, I think you would have to consider more than images, something like a placed PDF or AI could have a mix of color spaces. The better approach might be to script a preflight profile that checks for any RGB—if you haven’t scripted preflight I can post an example.

[Robert at ID-Tasker]

@code_seeeeeker 

There is no imageColorSpace  - but there is a space:

https://www.indesignjs.de/extendscriptAPI/indesign-latest/#Image.html

space

String

readonly

The color space.

Can be "RGB", "LAB", "CMYK", "PANTONE" - in VB - in JS it can be lowercase.

[Robert at ID-Tasker]

@code_seeeeeker 

Can be "RGB", "LAB", "CMYK", "PANTONE" - in VB - in JS it can be lowercase.

By @Robert at ID-Tasker

Sorry, my bad. There is no "PANTONE" - in the code of my old tool PhotoManager, I'm checking last 4 characters for "TONE" - and it's not from PANtone - but from DUOtone and MONOtone and others ending with "tone".

[Robert at ID-Tasker]

InDesign is unable to import MultiChannel:

[rob day]

Hi Robert, There’s also Grayscale + Spot, RGB + Spot, etc., but the graphic object does not have the .space property, so that begs the question, why is an RGB image a problem, but an RGB graphic is not?

[Robert at ID-Tasker]

@rob day

Not sure what do you mean? 

You can get "space" from the applied fill / stroke / effects swatch / color? 

[rob day]

But , not from something like a placed PDF, ID, or AI file, which could have objects with different spaces inside.

Preflight can get everything

[Robert at ID-Tasker]

But , not from something like a placed PDF, ID, or AI file, which could have objects with different spaces inside.

Preflight can get everything

By @rob day

Not sure how?

I've placed Quadtone and Bitmap - exported as PDF then placed it back - only info I can get is:

But more info is in the Links Panel:

Now - how to get this info - which Swatch is used where - in which linked file?

[Robert at ID-Tasker]

Now - how to get this info - which Swatch is used where - in which linked file?

By @Robert at ID-Tasker

OK, Find Colour works:

So it's doable...

[Robert at ID-Tasker]

Or not...

JS:

https://www.indesignjs.de/extendscriptAPI/indesign-latest/#Document.html#d1e49551__d1e54225

VB:

It looks like it returns NUMBER of instances - not a list / an array?

[Robert at ID-Tasker]

OK, the workaround would be to create a new document - then place this link - in this case PDF (*) - and check what's new on the Swatches list:

Place or just Copy&Paste.

(*) works with PSD as well - so will work with any link.

[rob day]

Keeping in mind that @code_seeeeeker is trying to find RGB objects, not Spot colors, he would not be able to get a selection‘s color space if the selected object is a PDF, AI, INDD, EPS. So this is an example of a placed PDF (that looks like an image):

.space for the selection returns an error:

var s = app.activeDocument.selection[0];
$.writeln(s.space)
//returns Object does not support the property or method 'space'
$.writeln(s.constructor.name)
//returns PDF

[rob day]

@code_seeeeeker , could check for RGB color inside of PDFs, etc. via a preflight rule. Something like this which would catch RGB inside of PDFs, linked RGB images, or native document RGB color:

if (checkForRGB()) {
	alert("This Document Contains RGB color")
} else {
    alert("No RGB color")

}


/**
* Checks Document for RGB Color
* @ return true if RGB objects are found 
* 
*/
function checkForRGB(){
    var d = app.activeDocument

    //Make a new Preflight Profile
    var pf = makePreflight("TestNoRGB");
    
    var cs = makeRule(pf, "ADBE_Colorspace")
    cs.flag = PreflightRuleFlag.returnAsError;
    
    var csNoRGB = cs.ruleDataObjects.itemByName("no_rgb")
    csNoRGB.properties = {dataType:RuleDataType.BOOLEAN_DATA_TYPE, dataValue:true}
    
    d.preflightOptions.preflightOff = false;
    d.preflightOptions.preflightWorkingProfile = pf;

    var pfp = app.preflightProcesses.add(d, pf)
    pfp.waitForProcess();
    
    if (pfp.processResults.length > 6) {
        return true
    } else {
        return false
    } 
} 

/**
* Makes a new Preflight 
* @ param preflight name 
* @ return the new preflight 
*/
function makePreflight(n){
    if (app.preflightProfiles.itemByName(n).isValid) {
        return app.preflightProfiles.itemByName(n);
    } else {
        return app.preflightProfiles.add({name:n});
    }
}

/**
* Makes a new Preflight Rule 
* @ param preflight name 
* @ param the preflight rule constant name 
* @ return the new preflight rule
*/
function makeRule(pf, n){
    if (pf.preflightProfileRules.itemByName(n).isValid) {
        return pf.preflightProfileRules.itemByName(n);
    } else {
        return pf.preflightProfileRules.add(n);
    }
}

[Robert at ID-Tasker]

@rob day 

Yes, there is no space property for vectors.