| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>Synchronized screenshot test with canvas</title> |
| <style> |
| html, body { margin: 0; } |
| </style> |
| </head> |
| <body> |
| <canvas id="canvas" width="256" height="256" style="position: absolute; left; 0px; top: 0px;"></canvas> |
| <div id="text"></div> |
| |
| <script> |
| var canvas = document.getElementById("canvas"); |
| var ctx = canvas.getContext("2d"); |
| var text = document.getElementById("text"); |
| function draw(r, g, b) { |
| var rgb = "RGB(" + r + "," + g + "," + b + ")"; |
| text.textContent = rgb; |
| ctx.fillStyle = rgb; |
| ctx.fillRect(0, 0, canvas.width, canvas.height); |
| } |
| </script> |
| </body> |
| </html> |
