| <!DOCTYPE html> |
| <html> |
| <body> |
| <script src="../../resources/js-test-pre.js"></script> |
| |
| <div id="detector"></div> |
| |
| <style> |
| #detector { width: 100px; } |
| @media (resolution: 1.00dppx) { #detector { width: 10px; } } |
| @media (resolution: 1.50dppx) { #detector { width: 15px; } } |
| @media (resolution: 2.00dppx) { #detector { width: 20px; } } |
| @media (resolution: 2.25dppx) { #detector { width: 23px; } } |
| @media print and (min-resolution: 3dppx) { #detector { width: 30px; } } |
| </style> |
| |
| <script> |
| description("CSS3 media query test: resolution query with dppx. Using style element, @media css rule.") |
| |
| if (window.testRunner && window.internals) { |
| window.testRunner.dumpAsText(); |
| window.testRunner.waitUntilDone(); |
| window.jsTestIsAsync = true; |
| |
| function setBackingScaleFactorPromise(factor) { |
| return new Promise((resolve, reject) => { |
| try { |
| testRunner.setBackingScaleFactor(factor, resolve); |
| } catch(e) { |
| reject(e); |
| } |
| }); |
| } |
| |
| function resolutionFromStyle() { |
| var width = getComputedStyle(document.getElementById("detector")).width; |
| switch (width) { |
| case "10px": |
| return 1; |
| case "15px": |
| return 1.5; |
| case "20px": |
| return 2; |
| case "23px": |
| return 2.25; |
| case "30px": |
| return 3; |
| case "31px": |
| return 3.125; |
| default: |
| return undefined; |
| } |
| } |
| |
| function appendMediaRule(rule) { |
| var lastStyleSheet = document.styleSheets[document.styleSheets.length - 1]; |
| lastStyleSheet.insertRule(rule, lastStyleSheet.cssRules.length); |
| } |
| |
| (async function() { |
| shouldBe("matchMedia('(resolution: 0dpi)').matches", "false"); |
| shouldBe("matchMedia('(min-resolution: 0dpi)').matches", "false"); |
| shouldBe("matchMedia('(max-resolution: 0dpi)').matches", "false"); |
| |
| await setBackingScaleFactorPromise(1.5); |
| shouldBe("matchMedia('(resolution: 1.5dppx)').matches", "true"); |
| shouldBe("resolutionFromStyle()", "1.5"); |
| |
| await setBackingScaleFactorPromise(2); |
| shouldBe("matchMedia('(resolution: 2dppx)').matches", "true"); |
| shouldBe("resolutionFromStyle()", "2"); |
| |
| await setBackingScaleFactorPromise(1); |
| shouldBe("matchMedia('(resolution: 1dppx)').matches", "true"); |
| shouldBe("resolutionFromStyle()", "1"); |
| |
| await setBackingScaleFactorPromise(2.25); |
| shouldBe("matchMedia('(resolution: 2.25dppx)').matches", "true"); |
| shouldBe("resolutionFromStyle()", "2.25"); |
| shouldBe("matchMedia('(resolution)').matches", "true"); |
| shouldBe("matchMedia('(resolution: 216dpi)').matches", "true"); |
| shouldBe("matchMedia('(min-resolution: 216dpi)').matches", "true"); |
| shouldBe("matchMedia('(max-resolution: 216dpi)').matches", "true"); |
| |
| await setBackingScaleFactorPromise(2.54); // use 2.54 to give us integral dpcm |
| shouldBe("matchMedia('(resolution: 96dpcm)').matches", "true"); |
| shouldBe("matchMedia('(min-resolution: 96dpcm)').matches", "true"); |
| shouldBe("matchMedia('(max-resolution: 96dpcm)').matches", "true"); |
| |
| // Test printing. |
| |
| window.internals.settings.setMediaTypeOverride("print"); |
| shouldBe("matchMedia('(min-resolution: 300dpi)').matches", "true"); |
| shouldBe("matchMedia('(min-resolution: 118dpcm)').matches", "true"); |
| |
| // Should match the one requiring 'print' media type. |
| shouldBe("resolutionFromStyle()", "3"); |
| |
| // As well as those matching 'all'. |
| appendMediaRule("@media (resolution: 3.125dppx) { #detector { width: 31px; } }"); |
| shouldBe("resolutionFromStyle()", "3.125"); |
| })().then(() => finishJSTest()); |
| } |
| </script> |
| |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
