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Diffstat (limited to 'gfx/layers/apz/test/gtest/TestSnapping.cpp')
-rw-r--r-- | gfx/layers/apz/test/gtest/TestSnapping.cpp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/gfx/layers/apz/test/gtest/TestSnapping.cpp b/gfx/layers/apz/test/gtest/TestSnapping.cpp new file mode 100644 index 000000000..95c21ca44 --- /dev/null +++ b/gfx/layers/apz/test/gtest/TestSnapping.cpp @@ -0,0 +1,64 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set sw=2 ts=8 et tw=80 : */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "APZCTreeManagerTester.h" +#include "APZTestCommon.h" +#include "InputUtils.h" + +class APZCSnappingTester : public APZCTreeManagerTester +{ +}; + +TEST_F(APZCSnappingTester, Bug1265510) +{ + const char* layerTreeSyntax = "c(t)"; + nsIntRegion layerVisibleRegion[] = { + nsIntRegion(IntRect(0, 0, 100, 100)), + nsIntRegion(IntRect(0, 100, 100, 100)) + }; + root = CreateLayerTree(layerTreeSyntax, layerVisibleRegion, nullptr, lm, layers); + SetScrollableFrameMetrics(root, FrameMetrics::START_SCROLL_ID, CSSRect(0, 0, 100, 200)); + SetScrollableFrameMetrics(layers[1], FrameMetrics::START_SCROLL_ID + 1, CSSRect(0, 0, 100, 200)); + SetScrollHandoff(layers[1], root); + + ScrollSnapInfo snap; + snap.mScrollSnapTypeY = NS_STYLE_SCROLL_SNAP_TYPE_MANDATORY; + snap.mScrollSnapIntervalY = Some(100 * AppUnitsPerCSSPixel()); + + ScrollMetadata metadata = root->GetScrollMetadata(0); + metadata.SetSnapInfo(ScrollSnapInfo(snap)); + root->SetScrollMetadata(metadata); + + UniquePtr<ScopedLayerTreeRegistration> registration = MakeUnique<ScopedLayerTreeRegistration>(manager, 0, root, mcc); + manager->UpdateHitTestingTree(0, root, false, 0, 0); + + TestAsyncPanZoomController* outer = ApzcOf(layers[0]); + TestAsyncPanZoomController* inner = ApzcOf(layers[1]); + + // Position the mouse near the bottom of the outer frame and scroll by 60px. + // (6 lines of 10px each). APZC will actually scroll to y=100 because of the + // mandatory snap coordinate there. + TimeStamp now = mcc->Time(); + SmoothWheel(manager, ScreenIntPoint(50, 80), ScreenPoint(0, 6), now); + // Advance in 5ms increments until we've scrolled by 70px. At this point, the + // closest snap point is y=100, and the inner frame should be under the mouse + // cursor. + while (outer->GetCurrentAsyncScrollOffset(AsyncPanZoomController::AsyncMode::NORMAL).y < 70) { + mcc->AdvanceByMillis(5); + outer->AdvanceAnimations(mcc->Time()); + } + // Now do another wheel in a new transaction. This should start scrolling the + // inner frame; we verify that it does by checking the inner scroll position. + TimeStamp newTransactionTime = now + TimeDuration::FromMilliseconds(gfxPrefs::MouseWheelTransactionTimeoutMs() + 100); + SmoothWheel(manager, ScreenIntPoint(50, 80), ScreenPoint(0, 6), newTransactionTime); + inner->AdvanceAnimationsUntilEnd(); + EXPECT_LT(0.0f, inner->GetCurrentAsyncScrollOffset(AsyncPanZoomController::AsyncMode::NORMAL).y); + + // However, the outer frame should also continue to the snap point, otherwise + // it is demonstrating incorrect behaviour by violating the mandatory snapping. + outer->AdvanceAnimationsUntilEnd(); + EXPECT_EQ(100.0f, outer->GetCurrentAsyncScrollOffset(AsyncPanZoomController::AsyncMode::NORMAL).y); +} |