JavaScript or AppleScript - how to map 1 colour in pdf

[Kevin Parrott]

Hi all

I am trying to map one specific colour to white in a pdf, and I can't for the life of me find anything that I can use. From what iv'e read

it seems that javascript is the better option for manipulating acrobat dc, but I have zero experience with it, applescript, quite a bit, so

I was thinking id just call the javascript in my apple script.

The colour I am trying to map is Keyline and I am wanting to convert to White, the colour keyline is made up from C0 M100 Y0 K20

and converted to spot.

Could some one please give me some infor or a snippet of javascript or applescript that I can add to the rest of my code please.

thankyou.

tell application "Adobe Acrobat"

    activate

    tell active doc

        repeat with i from 1 to count of pages

            tell page i

                set {L, T, R, B} to media box

                 set crop box to {L + 5 * 2.834645, T - 5 * 2.834645, R - 5 * 2.834645, B + 40.2 * 2.834645} -- points to mm conversion

                 --close active doc saving yes

                end tell

           end repeat

       end tell

end tell

[Test Screen Name]

There is no JavaScript or ApleScript API to edit page contents or colours.

[Karl Heinz Kremer]

That is correct in general, but in this case - mapping a spot color to some other color - there is actually functionality in the JavaScript API that claims that it can do this. However, it's badly documented and my experiments a few years ago where not too promising. See here for more information:

Acrobat DC SDK Documentation - Doc.colorConvertPage()

I can convert pages (and therefore a document) to a given color space (e.g. convert to grayscale), but never was able to convert one spot color to a different color.

[JR Boulay]

Hi.

Answer is in the Acrobat's preflight. There is a fixup that can do that, but since I don't use Acrobat in English I can't help you furthermore.

This (French) topic and Google Translate may help you: http://abracadabrapdf.net/forum/index.php/topic,3193.0.html

[Kevin Parrott]

JR_Boulay 

Thanks for the reply, I have been using the map to colours function in Acrobat's preflight set up, which works great, even tried to implement regex into my apple script, but had no success, as I no less about regex than I do about JavaScript.

Karl Heinz Kremer

Thanks for the reply, well, if JavaScript coder can't do it then I have very little chance, shame really as it seems so basic in theory.

[Kevin Parrott]

so instead of trying to map the colour, how would I go about having its layer not print?, is this do-able?

cheers

[Kevin Parrott]

getting somwhere (well only a little bit)

managed to figure out how to hide the layer, but when acrobat closes and saves via the rest of my code it doesn't save the  state, which is having the layer hidden.

			tell application "Adobe Acrobat"
				do script "var ocgs = this.getOCGs();

for (var i in ocgs) {

if (ocgs.name == ('Keyline'))

ocgs.state = false;

else ocgs.state = true;

}"

end tell

[Kevin Parrott]

I have found through a lot of searching that I can actually run a preflight profile, great, which means I can now map my colour to white, the code attached tells me "true" which indicates to me it has seen the profile, but the profile does not run, can some one please suggest a possible reason or answer as to why it wont execute?

cheers

kev

tell application "Adobe Acrobat"

    do script "var oProfile = Preflight.getProfileByName('Map color with specified color values');

if( oProfile != undefined) {

console.println('-----------------------------------------');

console.println('Name: ' + oProfile.name);

console.println('Comment: ' + oProfile.description);

console.println('HasFixups: ' + oProfile.hasFixups);

console.println('HasChecks: ' + oProfile.hasChecks);

console.println('-----------------------------------------');

}"

end tell

[try67 · Accepted solution]

You're doing nothing but retrieve the Preflight Profile... Now you need to actually execute it, using the preflight method of the Document object, like this:

this.preflight(oProfile);

[Kevin Parrott]

thanks for the reply try67, my javascript knowledge is extremely little, could you show me how ot execute please, I have had a look in the AcrobatDC_js_api_reference, but I just get myself very confused.

[try67]

I edited my previous reply with the code that you need to use to do it. I can't help you with converting it to AS code, though.

[Kevin Parrott]

ABSOLUTELY EXCELLENT, really appreciate it

here's the final, to simple

tell application "Adobe Acrobat"

                    do script "var oProfile = Preflight.getProfileByName('Map color with specified color values');

this.preflight(oProfile);

"

                end tell