pixel-editor/js/_colorChanged.js

document.getElementById('jscolor-hex-input').addEventListener('change', colorChanged, false);

on('input', 'jscolor-hex-input', function (e) {

    //get hex value
    var newColorHex = e.target.value.toLowerCase();

    //if the color is not (yet) a valid hex color, exit this function and do nothing
    if (/^[0-9a-f]{6}$/i.test(newColorHex) == false) 
        return;

    //get currently editing color
    var currentlyEditedColor = document.getElementsByClassName('jscolor-active')[0];

    //update the actual color picker to the inputted color
    currentlyEditedColor.firstChild.jscolor.fromString(newColorHex);

    colorChanged(e);
});


//changes all of one color to another after being changed from color picker
function colorChanged(e) {
    console.log('colorChanged() to ' + e.target.value);
    //get colors
    var newColor = hexToRgb(e.target.value);
    var oldColor = e.target.oldColor;

    currentPalette.splice(currentPalette.indexOf("#" + newColor), 1);

    newColor.a = 255;

    //save undo state
    new HistoryStateEditColor(e.target.value.toLowerCase(), rgbToHex(oldColor));

    //get the currently selected color
    var currentlyEditedColor = document.getElementsByClassName('jscolor-active')[0];
    var duplicateColorWarning = document.getElementById('duplicate-color-warning');

    //check if selected color already matches another color 
    colors = document.getElementsByClassName('color-button');
    console.log(colors);
    var colorCheckingStyle = 'background: #bc60c4; color: white';
    var newColorHex = e.target.value.toLowerCase();

    //if the color is not a valid hex color, exit this function and do nothing
    if (/^[0-9a-f]{6}$/i.test(newColorHex) == false) 
        return;

    //loop through all colors in palette
    for (var i = 0; i < colors.length; i++) {

        //if generated color matches this color
        if (newColorHex == colors[i].jscolor.toString()) {
            console.log('%ccolor already exists'+(colors[i].parentElement.classList.contains('jscolor-active')?' (but is the current color)':''), colorCheckingStyle);

            //if the color isnt the one that has the picker currently open
            if (!colors[i].parentElement.classList.contains('jscolor-active')) {
                console.log('%cColor is duplicate', colorCheckingStyle);

                //show the duplicate color warning
                duplicateColorWarning.style.visibility = 'visible';

                //shake warning icon
                duplicateColorWarning.classList.remove('shake');
                void duplicateColorWarning.offsetWidth;
                duplicateColorWarning.classList.add('shake');

                //exit function without updating color
                return;
            }
        }
    }

    //if the color being edited has a duplicate color warning, remove it
    duplicateColorWarning.style.visibility = 'hidden';

    currentlyEditedColor.firstChild.jscolor.fromString(newColorHex);

    replaceAllOfColor(oldColor, newColor);

    //set new old color to changed color
    e.target.oldColor = newColor;
    currentPalette.push('#' + newColorHex);

    //if this is the current color, update the drawing color
    if (e.target.colorElement.parentElement.classList.contains('selected')) {
        for (let i=1; i<layers.length - nAppLayers; i++) {
            layers[i].context.fillStyle = '#'+ rgbToHex(newColor.r,newColor.g,newColor.b);
        }

        currentGlobalColor = newColor;
    }
    /* this is wrong and bad
    if (settings.switchToChangedColor) {

    }*/
}