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script.js
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script.js
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'use strict';
const drawingArea = document.querySelector('.drawing-area');
const resetButton = document.querySelector('.reset');
const black = document.querySelector('#b1');
const cyan = document.querySelector('#b2');
const magenta = document.querySelector('#b3');
const yellow = document.querySelector('#b4');
const red = document.querySelector('#b5');
const green = document.querySelector('#b6');
const blue = document.querySelector('#b7');
const rainbow = document.querySelector('#b8');
const buttons = document.querySelectorAll('.color-option');
const gridSize = document.querySelector('.grid-size');
const gridParams = document.querySelector('.grid-params');
const submitButton = document.querySelector('.submit');
let selectedColor = 'black';
let rainbowPaint = [
'red',
'orange',
'yellow',
'green',
'blue',
'indigo',
'violet',
];
function createGrid(width, height) {
for (let i = 0; i < width * height; i++) {
let div = document.createElement('div');
div.classList.add('grid-item');
drawingArea.appendChild(div);
}
}
createGrid(16, 16);
let gridItems = document.querySelectorAll('.grid-item');
let mouseDown = false;
function onHover(element) {
if (selectedColor === 'rainbow') {
element.style.backgroundColor = `${
rainbowPaint[Math.trunc(Math.random() * 7)]
}`;
} else {
element.style.backgroundColor = `${selectedColor}`;
}
}
gridItems.forEach(gridNode => {
gridNode.addEventListener('mousedown', function () {
mouseDown = true;
});
gridNode.addEventListener('mouseup', function () {
mouseDown = false;
});
gridNode.addEventListener('mouseover', function () {
if (mouseDown) {
onHover(gridNode);
}
});
});
resetButton.addEventListener('click', function () {
gridItems.forEach(gridNode => {
gridNode.style.backgroundColor = 'white';
});
});
//COLOR PICKER BUTTONS
black.addEventListener('click', function () {
cyan.classList.remove('selected');
magenta.classList.remove('selected');
yellow.classList.remove('selected');
red.classList.remove('selected');
green.classList.remove('selected');
blue.classList.remove('selected');
black.classList.add('selected');
selectedColor = 'black';
});
cyan.addEventListener('click', function () {
black.classList.remove('selected');
magenta.classList.remove('selected');
yellow.classList.remove('selected');
red.classList.remove('selected');
green.classList.remove('selected');
blue.classList.remove('selected');
rainbow.classList.remove('selected');
cyan.classList.add('selected');
selectedColor = 'cyan';
});
magenta.addEventListener('click', function () {
black.classList.remove('selected');
magenta.classList.add('selected');
yellow.classList.remove('selected');
red.classList.remove('selected');
green.classList.remove('selected');
blue.classList.remove('selected');
rainbow.classList.remove('selected');
cyan.classList.remove('selected');
selectedColor = 'magenta';
});
yellow.addEventListener('click', function () {
black.classList.remove('selected');
magenta.classList.remove('selected');
yellow.classList.add('selected');
red.classList.remove('selected');
green.classList.remove('selected');
blue.classList.remove('selected');
rainbow.classList.remove('selected');
cyan.classList.remove('selected');
selectedColor = 'yellow';
});
red.addEventListener('click', function () {
black.classList.remove('selected');
magenta.classList.remove('selected');
yellow.classList.remove('selected');
red.classList.add('selected');
green.classList.remove('selected');
blue.classList.remove('selected');
rainbow.classList.remove('selected');
cyan.classList.remove('selected');
selectedColor = 'red';
});
green.addEventListener('click', function () {
black.classList.remove('selected');
magenta.classList.remove('selected');
yellow.classList.remove('selected');
red.classList.remove('selected');
green.classList.add('selected');
blue.classList.remove('selected');
rainbow.classList.remove('selected');
cyan.classList.remove('selected');
selectedColor = 'green';
});
blue.addEventListener('click', function () {
black.classList.remove('selected');
magenta.classList.remove('selected');
yellow.classList.remove('selected');
red.classList.remove('selected');
green.classList.remove('selected');
blue.classList.add('selected');
rainbow.classList.remove('selected');
cyan.classList.remove('selected');
selectedColor = 'blue';
});
rainbow.addEventListener('click', function () {
black.classList.remove('selected');
magenta.classList.remove('selected');
yellow.classList.remove('selected');
red.classList.remove('selected');
green.classList.remove('selected');
blue.classList.remove('selected');
rainbow.classList.add('selected');
cyan.classList.remove('selected');
selectedColor = 'rainbow';
});
//REVEAL GRID SIZE FORM
gridSize.addEventListener('click', function () {
gridParams.classList.remove('hidden');
});
//CREATE NEW GRID/THROW WARNINGS
submitButton.addEventListener('click', function () {
let height = Number(document.querySelector('.size').value);
let width = Number(document.querySelector('.size').value);
if (width > 100 || height > 100) {
let warning = document.createElement('p');
warning.classList.add('warning');
warning.textContent = 'Cannot use a width or height greater than 100.';
gridParams.appendChild(warning);
} else if (!width || !height) {
let warning = document.createElement('p');
warning.classList.add('warning');
warning.textContent = 'Size must be a valid integer value.';
gridParams.appendChild(warning);
} else if (width && height) {
while (drawingArea.firstChild) {
drawingArea.removeChild(drawingArea.lastChild);
}
createGrid(width, height);
gridItems = document.querySelectorAll('.grid-item');
gridItems.forEach(gridNode => {
gridNode.addEventListener('mouseover', function () {
onHover(gridNode);
});
});
drawingArea.style.gridTemplateColumns = `repeat(${width}, minmax(1px, 2em))`;
drawingArea.style.gridTemplateRows = `repeat(${height}, minmax(1px, 2em))`;
}
});