| function runTest() { |
| if (!window.testRunner || !window.sessionStorage) |
| return; |
| |
| if (!window.targetScaleFactor) |
| window.targetScaleFactor = 2; |
| |
| if (!sessionStorage.scaleFactorIsSet) { |
| testRunner.waitUntilDone(); |
| testRunner.setBackingScaleFactor(targetScaleFactor, scaleFactorIsSet); |
| } |
| |
| if (sessionStorage.pageReloaded && sessionStorage.scaleFactorIsSet) { |
| delete sessionStorage.pageReloaded; |
| delete sessionStorage.scaleFactorIsSet; |
| if (!window.manualNotifyDone) { |
| setTimeout(function() { |
| testRunner.notifyDone(); |
| }, 0); |
| } |
| } else { |
| // Right now there is a bug that srcset does not properly deal with dynamic changes to the scale factor, |
| // so to work around that, we must reload the page to get the new image. |
| // |
| // At the time of the Document load event, there might be other |
| // ongoing tasks that can cause new images to be loaded. To evict |
| // those images, we delay evictAllResources() call a little. |
| setTimeout(function() { |
| sessionStorage.pageReloaded = true; |
| if (window.internals) { |
| internals.evictAllResources(); |
| } |
| document.location.reload(true); |
| }, 300); |
| } |
| } |
| |
| function scaleFactorIsSet() { |
| sessionStorage.scaleFactorIsSet = true; |
| } |
| |
| window.addEventListener("load", runTest, false); |
