2d.layer.clearRect.partial.w.html (1393B)
1 <!DOCTYPE html> 2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> 3 <meta charset="UTF-8"> 4 <html class="reftest-wait"> 5 <link rel="match" href="2d.layer.clearRect.partial-expected.html"> 6 <title>Canvas test: 2d.layer.clearRect.partial</title> 7 <h1>2d.layer.clearRect.partial</h1> 8 <p class="desc">clearRect inside a layer can clear a portion of the layer content.</p> 9 <canvas id="canvas" width="100" height="100"> 10 <p class="fallback">FAIL (fallback content)</p> 11 </canvas> 12 <script id='myWorker' type='text/worker'> 13 self.onmessage = function(e) { 14 const canvas = new OffscreenCanvas(100, 100); 15 const ctx = canvas.getContext('2d'); 16 17 ctx.fillStyle = 'blue'; 18 ctx.fillRect(10, 10, 80, 50); 19 20 ctx.beginLayer(); 21 ctx.fillStyle = 'red'; 22 ctx.fillRect(20, 20, 80, 50); 23 ctx.clearRect(30, 30, 60, 30); 24 ctx.endLayer(); 25 26 const bitmap = canvas.transferToImageBitmap(); 27 self.postMessage(bitmap, bitmap); 28 }; 29 </script> 30 <script> 31 const blob = new Blob([document.getElementById('myWorker').textContent]); 32 const worker = new Worker(URL.createObjectURL(blob)); 33 worker.addEventListener('message', msg => { 34 const outputCtx = document.getElementById("canvas").getContext('2d'); 35 outputCtx.drawImage(msg.data, 0, 0); 36 document.documentElement.classList.remove("reftest-wait"); 37 }); 38 worker.postMessage(null); 39 </script> 40 </html>