| <!DOCTYPE html> |
| <script src="../../../../../resources/testharness.js"></script> |
| <script src="../../../../../resources/testharnessreport.js"></script> |
| <script src="../../../../../resources/gesture-util.js"></script> |
| <div id="testdiv" style="margin: 0px; width: 100px; height: 100px; background-color: blue;"></div> |
| <script> |
| |
| // For the pinch inside the div. |
| var X_INSIDE = 50; |
| var Y_INSIDE = 40; |
| var SCALE_INSIDE = 1.5; |
| // For the pinch outside the div. |
| var X_OUTSIDE = 150; |
| var Y_OUTSIDE = 100; |
| var SCALE_OUTSIDE = 2.0; |
| |
| var TOLERANCE = 0.001; |
| var MOUSE_INPUT = GestureSourceType.MOUSE_INPUT; |
| |
| var t = async_test("Touchpad pinch can be prevented by wheel handlers"); |
| |
| var numWheelEventsSeen = 0; |
| var totalScaleChange = 1.0; |
| |
| function wheelHandler(event) { |
| numWheelEventsSeen++; |
| |
| var scaleChange = Math.exp(-event.deltaY / 100); |
| totalScaleChange *= scaleChange; |
| |
| assert_true(event.cancelable); |
| event.preventDefault(); |
| } |
| |
| document.getElementById('testdiv').addEventListener( |
| 'wheel', t.step_func(wheelHandler), {passive: false}); |
| |
| if (window.chrome && chrome.gpuBenchmarking) { |
| window.onload = t.step_func(function() { |
| assert_approx_equals( |
| window.visualViewport.scale, 1.0, TOLERANCE); |
| |
| // Ensure the compositor is made aware of the handler before we send the |
| // pinch. |
| waitForCompositorCommit().then(t.step_func(function() { |
| // Do a pinch in a region that prevents the event(s) from performing a |
| // zoom. |
| chrome.gpuBenchmarking.pinchBy( |
| SCALE_INSIDE, X_INSIDE, Y_INSIDE, t.step_func(function() { |
| assert_approx_equals( |
| window.visualViewport.scale, 1.0, TOLERANCE); |
| assert_greater_than(numWheelEventsSeen, 0); |
| assert_approx_equals(totalScaleChange, SCALE_INSIDE, TOLERANCE); |
| |
| numWheelEventsSeen = 0; |
| totalScaleChange = 1.0; |
| |
| // Do a pinch outside of this region and ensure that a zoom occurs, and |
| // that it occurs around the pinch area. |
| chrome.gpuBenchmarking.pinchBy( |
| SCALE_OUTSIDE, X_OUTSIDE, Y_OUTSIDE, t.step_func_done(function() { |
| assert_approx_equals( |
| window.visualViewport.scale, SCALE_OUTSIDE, TOLERANCE); |
| assert_approx_equals(window.visualViewport.offsetLeft, 75, TOLERANCE); |
| assert_approx_equals(window.visualViewport.offsetTop, 50, TOLERANCE); |
| assert_equals(numWheelEventsSeen, 0); |
| }), undefined /* speed */, MOUSE_INPUT); |
| }), undefined /* speed */, MOUSE_INPUT); |
| })); |
| }); |
| } else { |
| t.step(function() { |
| assert_unreached('This test requires chrome.gpuBenchmarking.pinchBy'); |
| }); |
| t.done(); |
| } |
| |
| </script> |
