| <!doctype html> |
| <link rel="help" href="https://drafts.csswg.org/css-viewport/#zoom-om"> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/9398"> |
| <link rel="author" href="mailto:[email protected]" title="Emilio Cobos Álvarez"> |
| <link rel="author" href="https://mozilla.org" title="Mozilla"> |
| <title>ResizeObserver sizes account for zoom</title> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| div { |
| width: 100px; |
| height: 100px; |
| border: 5px solid; |
| padding: 5px; |
| margin: 5px; |
| box-sizing: border-box; |
| } |
| </style> |
| <div></div> |
| <div style="zoom: 2"></div> |
| <div style="zoom: 4"></div> |
| <script> |
| promise_test(async function() { |
| let { promise, resolve } = Promise.withResolvers(); |
| let observer = new ResizeObserver(entries => { |
| resolve(entries); |
| }); |
| for (let div of document.querySelectorAll("div")) { |
| observer.observe(div); |
| } |
| let entries = await promise; |
| observer.disconnect(); |
| assert_equals(entries.length, 3, "Should have three entries"); |
| for (let entry of entries) { |
| assert_equals(entry.contentRect.top, 5, "content-rect top should be scaled by zoom"); |
| assert_equals(entry.contentRect.left, 5, "content-rect left should be scaled by zoom"); |
| assert_equals(entry.contentRect.width, 80, "content-rect width should be scaled by zoom"); |
| assert_equals(entry.contentRect.height, 80, "content-rect height should be scaled by zoom"); |
| |
| for (let sizeArray of [entry.borderBoxSize, entry.contentBoxSize, entry.devicePixelContentBoxSize]) { |
| assert_equals(sizeArray.length, 1, "Should have one box"); |
| } |
| let borderBoxSize = entry.borderBoxSize[0]; |
| let contentBoxSize = entry.contentBoxSize[0]; |
| let devicePixelContentBoxSize = entry.devicePixelContentBoxSize[0]; |
| assert_equals(borderBoxSize.inlineSize, 100, "border inline size should be scaled by zoom"); |
| assert_equals(borderBoxSize.blockSize, 100, "border block size should be scaled by zoom"); |
| assert_equals(contentBoxSize.inlineSize, 80, "content inline size should be scaled by zoom"); |
| assert_equals(contentBoxSize.blockSize, 80, "content block size should be scaled by zoom"); |
| assert_equals(devicePixelContentBoxSize.inlineSize, 80 * entry.target.currentCSSZoom * window.devicePixelRatio, "dev-px size should _not_ be scaled by zoom"); |
| assert_equals(devicePixelContentBoxSize.blockSize, 80 * entry.target.currentCSSZoom * window.devicePixelRatio, "dev-px size should _not_ be scaled by zoom"); |
| } |
| }); |
| </script> |
