Illustrator script to find all colors in document

Question

I am looking for a script that will give me a list of all the colors in an Adobe Illustrator document by there color numbers (rgb or cmyk). I have no code and have no idea how to do this, or if you even can. Can anyone please give me any information?

Answer 1

This will loop through all the shapes in the active document and gets posts an alert with their RGB fill colours:

with (app.activeDocument) {
    if (pathItems.length > 0)
    {
        alert(pathItems.length);
        for (var g = 0 ; g < pathItems.length; g++)
          {
               if (pathItems[g].filled == true)
               {
                   if (pathItems[g].fillColor.red > 200 == true && pathItems[g].fillColor.red < 210 == true && pathItems[g].fillColor.green > 200 == true && pathItems[g].fillColor.green < 210 == true && pathItems[g].fillColor.blue > 200 == true && pathItems[g].fillColor.blue < 210 == true)
                       {
                        alert('R' + pathItems[g].fillColor.red + ' G' + pathItems[g].fillColor.green + ' B' + pathItems[g].fillColor.blue);
                        }
               }
          }
      }
} 

Note: You document must be in RGB colour mode for this to work

The long If line anwers your other question

Answer 2

From SVG

This solution uses a browser to parse/extract all colors present. You should follow this steps:

• Export the illustrator document as SVG
• Create and empty html file and paste the js code (below)
• Open the file with the browser

The idea is iterating over all elements and using getComputedStyle(), then extract only values like rgb(n, n, n) using a regex like /(.*)(rgb\([0-9, ]*\))(.*)/g performing another loop, like this:

var doc = document.getElementsByTagName("*");
var colors = [];

for (let j = 0; j < doc.length; j++) {

  var styles = window.getComputedStyle(doc[j], null)

  for (let i = 0; i < styles.length; i++) {

    if (typeof styles[styles[i]] !== "undefined" && styles[styles[i]].match(/rgb\([0-9, ]*\)/g)) {

    let color = styles[styles[i]].replace(/(.*)(rgb\([0-9, ]*\))(.*)/g,"$2")
      if (!colors.includes(color))
        colors.push(color);

    }

  }

}
console.log(colors)

Full functional example here: https://jsfiddle.net/gwd35Lyv/ and https://jsfiddle.net/oenmL4t6/ an empty document in which you could include the svg created.

This is assuming we are using a browser, not embebed JavaScript into illustrator file.

You could also open the svg file with a browser, like this https://dev.w3.org/SVG/tools/svgweb/samples/svg-files/AJ_Digital_Camera.svg press F12 and in the console, paste the js code in it.

From Image

Previous solution doesn't compute the colors present in images, because we have to read pixel by pixel, to do that based in this How to get a pixel's x,y coordinate color from an image?. we could do this:

var img = document.getElementById('my-image');
var canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
canvas.getContext('2d').drawImage(img, 0, 0, img.width, img.height);

var rect = img.getBoundingClientRect();

var colors = [];

for (let y = rect.top; y <= rect.left; y++) {

  for (let x = rect.left; x <= rect.right; x++) {
    var pixelData = canvas.getContext('2d').getImageData(x, y, 1, 1).data;
    var rgb = "rgb(" + pixelData[0] + ", " + pixelData[1] + ", " + pixelData[2] + ")"
    if (!colors.includes(rgb)) {
      colors.push(rgb);
    }

  }

}

console.log(colors)

Here an example: http://jsfiddle.net/vkq0ew9n/ The restriction is that the image should be within the same origin (local doesn't work, just http: https: etc, not file:).