| <!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> |
| |
| var TEST_X = 40; |
| var TEST_Y = 70; |
| var TEST_SCALE = 0.5; |
| var TOLERANCE = 0.001; |
| var MOUSE_INPUT = GestureSourceType.MOUSE_INPUT; |
| |
| var t = async_test("Touchpad pinch offers synthetic wheel events"); |
| |
| var numWheelEventsSeen = 0; |
| var totalScaleChange = 1.0; |
| |
| function wheelHandler(event) { |
| numWheelEventsSeen++; |
| |
| assert_true(event.ctrlKey); |
| assert_approx_equals(event.deltaX, 0, TOLERANCE); |
| assert_approx_equals(event.x, TEST_X, TOLERANCE); |
| assert_approx_equals(event.y, TEST_Y, TOLERANCE); |
| |
| var scaleChange = Math.exp(-event.deltaY / 100); |
| totalScaleChange *= scaleChange; |
| } |
| |
| document.getElementById('testdiv').addEventListener( |
| 'wheel', t.step_func(wheelHandler)); |
| |
| if (window.chrome && chrome.gpuBenchmarking) { |
| window.onload = t.step_func(function() { |
| // Ensure the compositor is made aware of the handler before we send the |
| // pinch. |
| waitForCompositorCommit().then(t.step_func(function() { |
| // Ensure that a touchpad pinch generates synthetic wheel event(s). |
| chrome.gpuBenchmarking.pinchBy( |
| TEST_SCALE, TEST_X, TEST_Y, t.step_func_done(function() { |
| assert_greater_than(numWheelEventsSeen, 0); |
| assert_approx_equals(totalScaleChange, TEST_SCALE, TOLERANCE); |
| }), undefined /* speed */, MOUSE_INPUT); |
| })); |
| }); |
| } else { |
| t.step(function() { |
| assert_unreached('This test requires chrome.gpuBenchmarking.pinchBy'); |
| }); |
| t.done(); |
| } |
| |
| </script> |
