| <!DOCTYPE html> |
| <script src="../../../resources/js-test.js"></script> |
| <style> |
| body { |
| height: 2000px; |
| width: 2000px; |
| } |
| </style> |
| |
| <script> |
| window.jsTestIsAsync = true; |
| var numCalls = 0; |
| |
| description("This test verifies that that visualviewportchanged event gets \ |
| fired when the visual viewport is scaled or scrolled."); |
| |
| function verifySetViewportOffsets() { |
| // Set viewport offset. Listener called twice. |
| window.visualViewport.scrollTop = 20; |
| requestAnimationFrame(function() { |
| shouldBe("numCalls", "3"); |
| window.visualViewport.scrollLeft = 0; |
| requestAnimationFrame(function() { |
| shouldBe("numCalls", "4"); |
| finishJSTest(); |
| }); |
| }); |
| } |
| |
| function runTest() { |
| if (!window.eventSender || !window.internals) { |
| finishJSTest(); |
| return; |
| } |
| // Turn off smooth scrolling. |
| internals.settings.setScrollAnimatorEnabled(false); |
| |
| window.addEventListener('visualviewportchanged', function(e) { |
| numCalls++; |
| }); |
| |
| // Scroll both viewports. Listner not called. |
| eventSender.mouseMoveTo(100, 100); |
| eventSender.continuousMouseScrollBy(100, 100); |
| shouldBe("numCalls", "0"); |
| |
| // Scale and scroll visual viewport. Listener called twice. |
| internals.setPageScaleFactor(2); |
| requestAnimationFrame(function() { |
| shouldBe("numCalls", "1"); |
| internals.setVisualViewportOffset(10, 10); |
| requestAnimationFrame(function() { |
| shouldBe("numCalls", "2"); |
| verifySetViewportOffsets(); |
| }); |
| }); |
| } |
| </script> |
| |
| <body onload="runTest()"></body> |
