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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 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"
#include "mozilla/StaticPrefs_layout.h"
#include "mozilla/StaticPrefs_mousewheel.h"
class APZCSnappingTester : public APZCTreeManagerTester {};
TEST_F(APZCSnappingTester, Bug1265510) {
SCOPED_GFX_VAR(UseWebRender, bool, false);
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, ScrollableLayerGuid::START_SCROLL_ID,
CSSRect(0, 0, 100, 200));
SetScrollableFrameMetrics(layers[1], ScrollableLayerGuid::START_SCROLL_ID + 1,
CSSRect(0, 0, 100, 200));
SetScrollHandoff(layers[1], root);
ScrollSnapInfo snap;
snap.mScrollSnapStrictnessY = StyleScrollSnapStrictness::Mandatory;
snap.mSnapPositionY.AppendElement(0 * AppUnitsPerCSSPixel());
snap.mSnapPositionY.AppendElement(100 * AppUnitsPerCSSPixel());
ScrollMetadata metadata = root->GetScrollMetadata(0);
metadata.SetSnapInfo(ScrollSnapInfo(snap));
root->SetScrollMetadata(metadata);
UniquePtr<ScopedLayerTreeRegistration> registration =
MakeUnique<ScopedLayerTreeRegistration>(manager, LayersId{0}, root, mcc);
UpdateHitTestingTree();
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::AsyncTransformConsumer::eForHitTesting)
.y < 70) {
mcc->AdvanceByMillis(5);
outer->AdvanceAnimations(mcc->GetSampleTime());
}
// 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(
StaticPrefs::mousewheel_transaction_timeout() + 100);
SmoothWheel(manager, ScreenIntPoint(50, 80), ScreenPoint(0, 6),
newTransactionTime);
inner->AdvanceAnimationsUntilEnd();
EXPECT_LT(
0.0f,
inner
->GetCurrentAsyncScrollOffset(
AsyncPanZoomController::AsyncTransformConsumer::eForHitTesting)
.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::AsyncTransformConsumer::eForHitTesting)
.y);
}
TEST_F(APZCSnappingTester, Snap_After_Pinch) {
SCOPED_GFX_VAR(UseWebRender, bool, false);
const char* layerTreeSyntax = "c";
nsIntRegion layerVisibleRegion[] = {
nsIntRegion(IntRect(0, 0, 100, 100)),
};
root =
CreateLayerTree(layerTreeSyntax, layerVisibleRegion, nullptr, lm, layers);
SetScrollableFrameMetrics(root, ScrollableLayerGuid::START_SCROLL_ID,
CSSRect(0, 0, 100, 200));
// Set up some basic scroll snapping
ScrollSnapInfo snap;
snap.mScrollSnapStrictnessY = StyleScrollSnapStrictness::Mandatory;
snap.mSnapPositionY.AppendElement(0 * AppUnitsPerCSSPixel());
snap.mSnapPositionY.AppendElement(100 * AppUnitsPerCSSPixel());
// Save the scroll snap info on the root APZC.
// Also mark the root APZC as "root content", since APZC only allows
// zooming on the root content APZC.
ScrollMetadata metadata = root->GetScrollMetadata(0);
metadata.SetSnapInfo(ScrollSnapInfo(snap));
metadata.GetMetrics().SetIsRootContent(true);
root->SetScrollMetadata(metadata);
UniquePtr<ScopedLayerTreeRegistration> registration =
MakeUnique<ScopedLayerTreeRegistration>(manager, LayersId{0}, root, mcc);
UpdateHitTestingTree();
RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
// Allow zooming
apzc->UpdateZoomConstraints(ZoomConstraints(
true, true, CSSToParentLayerScale(0.25f), CSSToParentLayerScale(4.0f)));
PinchWithPinchInput(apzc, ScreenIntPoint(50, 50), ScreenIntPoint(50, 50),
1.2f);
apzc->AssertStateIsSmoothMsdScroll();
}
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