HTML `canvas` Drawing configuration guide to Mouse Events in Safari - advanced patterns
I'm working on an interactive drawing application using the HTML `<canvas>` element, and I'm experiencing a frustrating scenario specifically in Safari. The mouse events for drawing are not triggering properly, and I need to seem to find a solution. The expected behavior is that when the user clicks and drags on the canvas, it should draw lines according to the mouse pointer movements. However, in Safari 14.1, the drawing function is sporadically unresponsive. Here’s the relevant portion of my JavaScript code where I handle the mouse events: ```javascript const canvas = document.getElementById('myCanvas'); const ctx = canvas.getContext('2d'); let drawing = false; canvas.addEventListener('mousedown', (e) => { drawing = true; ctx.beginPath(); ctx.moveTo(e.offsetX, e.offsetY); }); canvas.addEventListener('mousemove', (e) => { if (!drawing) return; ctx.lineTo(e.offsetX, e.offsetY); ctx.stroke(); }); canvas.addEventListener('mouseup', () => { drawing = false; }); canvas.addEventListener('mouseout', () => { drawing = false; }); ``` I've confirmed that the canvas element is correctly set up in HTML and has defined width and height attributes: ```html <canvas id="myCanvas" width="800" height="600" style="border:1px solid #000;"></canvas> ``` The drawing works flawlessly in Chrome and Firefox, but in Safari, the `mousemove` event sometimes doesn't register after the initial `mousedown`. I tried wrapping the event listeners inside `window.onload` to ensure they are set after the document loads, but it didn’t help. Additionally, I checked for any event propagation issues and added `preventDefault()` to the mouse events without success. I even tried using `getBoundingClientRect()` to get the mouse position but it still results in the same behavior. Are there any known issues with the `<canvas>` mouse events in Safari or any best practices I might be overlooking that could guide to resolve this question?