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script.js
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script.js
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let history = [];
const colorPicker = document.getElementById('colorPicker');
const canvasColor = document.getElementById('canvasColor');
const canvas = document.getElementById('myCanvas');
const undoButton = document.getElementById('undoButton');
const clearButton = document.getElementById('clearButton');
const saveButton = document.getElementById('saveButton');
const fontPicker = document.getElementById('fontPicker');
const textInput = document.getElementById('textInput');
const fontSizePicker = document.getElementById('fontSizePicker'); // add new element
const ctx = canvas.getContext('2d');
colorPicker.addEventListener('change', (event) => {
ctx.fillStyle = event.target.value;
ctx.strokeStyle = event.target.value;
});
canvasColor.addEventListener('change', (event) => {
ctx.fillStyle = event.target.value;
ctx.fillRect(0, 0, 800, 500);
});
canvas.addEventListener('mousedown', (event) => {
isDrawing = true;
lastX = event.offsetX;
lastY = event.offsetY;
});
canvas.addEventListener('mousemove', (event) => {
if (isDrawing) {
ctx.beginPath();
ctx.moveTo(lastX, lastY);
ctx.lineTo(event.offsetX, event.offsetY);
ctx.stroke();
lastX = event.offsetX;
lastY = event.offsetY;
}
});
canvas.addEventListener('contextmenu', (event) => {
event.preventDefault();
});
canvas.addEventListener('mouseup', () => {
isDrawing = false;
});
fontSizePicker.addEventListener('change', (event) => {
ctx.lineWidth = event.target.value;
// ctx.font = `${fontPicker.value} ${event.target.value}px`;
});
clearButton.addEventListener('click', () => {
// Clear the canvas
ctx.clearRect(0, 0, canvas.width, canvas.height);
})
// Add event listener for the save button
saveButton.addEventListener('click', () => {
localStorage.setItem('canvasContents', canvas.toDataURL());
// Create a new <a> element
let link = document.createElement('a');
// Set the download attribute and the href attribute of the <a> element
link.download = 'my-canvas.png';
link.href = canvas.toDataURL();
// Dispatch a click event on the <a> element
link.click();
});
// Add event listener for the retrieve button
retrieveButton.addEventListener('click', () => {
// Retrieve the saved canvas contents from local storage
let savedCanvas = localStorage.getItem('canvasContents');
if (savedCanvas) {
let img = new Image();
img.src = savedCanvas;
ctx.drawImage(img, 0, 0);
}
});