Hora de Desenhar
About this app
Um divertido aplicativo de desenho para crianças
Hora de Desenhar Hora de Desenhar Selecione uma cor: Apagar
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Source
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Hora de Desenhar</title>
<meta name="description" content="Um divertido aplicativo de desenho para crianças">
<meta name="keywords" content="desenhar, app, crianças">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/5.0.2/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Roboto:400,700" rel="stylesheet">
<script type="text/javascript">
try {
// App Javascript Goes Here. Place your entire script content inside the try block for error handling.
// This will run when the DOM is ready.
document.addEventListener("DOMContentLoaded", function() {
// Get the canvas element
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");
// Set initial color
let color = "#000000";
// Set initial drawing state
let isDrawing = false;
// Function to handle mouse down event
function startDrawing(event) {
isDrawing = true;
ctx.beginPath();
ctx.moveTo(event.clientX, event.clientY);
}
// Function to handle mouse move event
function draw(event) {
if (isDrawing) {
ctx.lineTo(event.clientX, event.clientY);
ctx.strokeStyle = color;
ctx.lineWidth = 5;
ctx.stroke();
}
}
// Function to handle mouse up event
function stopDrawing() {
isDrawing = false;
}
// Function to handle color selection
function selectColor(newColor) {
color = newColor;
}
// Function to clear the canvas
function clearCanvas() {
ctx.clearRect(0, 0, canvas.width, canvas.height);
}
// Add event listeners
canvas.addEventListener("mousedown", startDrawing);
canvas.addEventListener("mousemove", draw);
canvas.addEventListener("mouseup", stopDrawing);
// Get the color buttons
const colors = document.getElementsByClassName("color");
// Add event listeners to color buttons
Array.from(colors).forEach(function(button) {
button.addEventListener("click", function() {
const newColor = this.dataset.color;
selectColor(newColor);
});
});
// Get the clear button
const clearButton = document.getElementById("clear-button");
// Add event listener to clear button
clearButton.addEventListener("click", clearCanvas);
});
} catch (error) {
// This will throw the error to the parent window.
throw error;
}
</script>
<style>
/* App CSS Goes Here */
body {
background-color: #f5f5f5;
font-family: 'Roboto', sans-serif;
}
#canvas {
width: 100%;
height: 400px;
border: 1px solid #ccc;
margin-bottom: 20px;
}
.color {
width: 30px;
height: 30px;
border-radius: 50%;
margin-right: 10px;
cursor: pointer;
}
#clear-button {
padding: 5px 10px;
background-color: #dc3545;
color: #fff;
border: none;
border-radius: 5px;
cursor: pointer;
}
</style>
</head>
<body>
<div id="main-container" class="container">
<h1>Hora de Desenhar</h1>
<canvas id="canvas"></canvas>
<div>
<h3>Selecione uma cor:</h3>
<div>
<button class="color" style="background-color: #000000" data-color="#000000"></button>
<button class="color" style="background-color: #ff0000" data-color="#ff0000"></button>
<button class="color" style="background-color: #00ff00" data-color="#00ff00"></button>
<button class="color" style="background-color: #0000ff" data-color="#0000ff"></button>
</div>
</div>
<div>
<button id="clear-button">Apagar</button>
</div>
</div>
</body>
</html>
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