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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <style> |
| 3 body { |
| 4 height: 2000px; |
| 5 width: 2000px; |
| 6 } |
| 7 </style> |
| 8 |
| 9 <script src="../../../resources/testharness.js"></script> |
| 10 <script src="../../../resources/testharnessreport.js"></script> |
| 11 <script> |
| 12 var numCallsScroll = 0; |
| 13 var numCallsResize = 0; |
| 14 var pageScaleFactor = 2; |
| 15 |
| 16 function viewport() { |
| 17 return window.visualViewport; |
| 18 } |
| 19 |
| 20 var t = async_test('verify that the scroll and resize events get fired on wind
ow.visualViewport'); |
| 21 |
| 22 function verifySetViewportOffsets() { |
| 23 // Set viewport offset. |
| 24 window.visualViewport.scrollTop = 20; |
| 25 requestAnimationFrame(function() { |
| 26 t.step(function() { |
| 27 assert_equals(numCallsScroll, 2, "scroll listener called for scrollTop")
; |
| 28 assert_equals(numCallsResize, 1, "resize listener not called for scrollT
op"); |
| 29 }); |
| 30 window.visualViewport.scrollLeft = 0; |
| 31 requestAnimationFrame(function() { |
| 32 t.step(function() { |
| 33 assert_equals(numCallsScroll, 3, "scroll listener called for scrollLef
t"); |
| 34 assert_equals(numCallsResize, 1, "resize listener not called for scrol
lLeft"); |
| 35 }); |
| 36 t.done(); |
| 37 }); |
| 38 }); |
| 39 } |
| 40 |
| 41 window.onload = t.step_func(function() { |
| 42 // Turn off smooth scrolling. |
| 43 internals.settings.setScrollAnimatorEnabled(false); |
| 44 |
| 45 window.visualViewport.addEventListener('scroll', function(e) { |
| 46 numCallsScroll++; |
| 47 }); |
| 48 |
| 49 window.visualViewport.addEventListener('resize', function(e) { |
| 50 numCallsResize++; |
| 51 }); |
| 52 |
| 53 // Scroll both viewports. |
| 54 eventSender.mouseMoveTo(100, 100); |
| 55 eventSender.continuousMouseScrollBy(100, 100); |
| 56 assert_equals(numCallsScroll, 0); |
| 57 assert_equals(numCallsResize, 0); |
| 58 |
| 59 // TODO(ymalik): Remove hook to internals to pinch-zoom here and browser |
| 60 // zoom below. This will be required to upstream to w3c repo. |
| 61 internals.setPageScaleFactor(pageScaleFactor); |
| 62 |
| 63 // Verify viewport dimensions exclude scrollbar. |
| 64 requestAnimationFrame(function() { |
| 65 t.step(function() { |
| 66 assert_equals(numCallsScroll, 0, "scroll listener not called for scale")
; |
| 67 assert_equals(numCallsResize, 1, "resize listener called for scale"); |
| 68 }); |
| 69 internals.setVisualViewportOffset(10, 10); |
| 70 requestAnimationFrame(function() { |
| 71 t.step(function() { |
| 72 assert_equals(numCallsScroll, 1, "scroll listener called for offset ch
ange"); |
| 73 assert_equals(numCallsResize, 1, "resize listener not called for offse
t change"); |
| 74 }); |
| 75 verifySetViewportOffsets(); |
| 76 }); |
| 77 }); |
| 78 }); |
| 79 </script> |
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Chromium Code Reviews
Issue 2096783004:
Seperate visualviewportchanged event into scroll and resize events (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master