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