| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Partial repaint inside a CSS-zoomed iframe must propagate a zoom-scaled damage rect to the owner</title> |
| <style> |
| iframe { |
| position: absolute; |
| left: 0; |
| top: 0; |
| width: 200px; |
| height: 200px; |
| border: none; |
| zoom: 1.5; |
| } |
| </style> |
| </head> |
| <body> |
| <iframe id="frame" scrolling="no" srcdoc=" |
| <!DOCTYPE html> |
| <style> |
| html, body { |
| margin: 0; |
| } |
| #canvas { |
| display: block; |
| } |
| </style> |
| <canvas id='canvas' width='80' height='80'></canvas> |
| "></iframe> |
| <pre id="repaints"></pre> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| } |
| |
| const frame = document.getElementById("frame"); |
| |
| async function test() { |
| await new Promise(resolve => frame.addEventListener("load", resolve, { once: true })); |
| await new Promise(requestAnimationFrame); |
| await new Promise(requestAnimationFrame); |
| |
| if (window.internals) |
| internals.startTrackingRepaints(); |
| |
| const canvasContext = frame.contentDocument.getElementById("canvas").getContext("2d"); |
| canvasContext.fillStyle = "green"; |
| canvasContext.fillRect(0, 0, 80, 80); |
| |
| document.body.offsetTop; |
| |
| if (window.internals) { |
| document.getElementById("repaints").textContent = internals.repaintRectsAsText(); |
| internals.stopTrackingRepaints(); |
| } |
| |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| } |
| test(); |
| </script> |
| </body> |
| </html> |
