mozilla-central/gfx/layers/apz/test/gtest/TestSnapping.cpp (file symbol)

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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 APZCSnappingTesterMock : public APZCTreeManagerTester {
public:
APZCSnappingTesterMock() { CreateMockHitTester(); }
};
TEST_F(APZCSnappingTesterMock, Bug1265510) {
// Needed because the test uses SmoothWheel()
SCOPED_GFX_PREF_BOOL("general.smoothScroll", true);
const char* treeShape = "x(x)";
LayerIntRect layerVisibleRect[] = {LayerIntRect(0, 0, 100, 100),
LayerIntRect(0, 100, 100, 100)};
CreateScrollData(treeShape, layerVisibleRect);
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.mSnapportSize =
CSSSize::ToAppUnits(layerVisibleRect[0].Size() * LayerToCSSScale(1.0));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(0 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 0, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{1}));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(100 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 100, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{2}));
ModifyFrameMetrics(root, [&](ScrollMetadata& aSm, FrameMetrics&) {
aSm.SetSnapInfo(ScrollSnapInfo(snap));
});
UniquePtr<ScopedLayerTreeRegistration> registration =
MakeUnique<ScopedLayerTreeRegistration>(LayersId{0}, 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.
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
SmoothWheel(manager, ScreenIntPoint(50, 80), ScreenPoint(0, 6), mcc->Time());
// 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(
AsyncTransformConsumer::eForEventHandling)
.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.
mcc->AdvanceBy(TimeDuration::FromMilliseconds(
StaticPrefs::mousewheel_transaction_timeout() + 100));
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID + 1);
SmoothWheel(manager, ScreenIntPoint(50, 80), ScreenPoint(0, 6), mcc->Time());
mcc->AdvanceByMillis(5);
inner->AdvanceAnimationsUntilEnd();
EXPECT_LT(0.0f, inner
->GetCurrentAsyncScrollOffset(
AsyncTransformConsumer::eForEventHandling)
.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(
AsyncTransformConsumer::eForEventHandling)
.y);
}
TEST_F(APZCSnappingTesterMock, Snap_After_Pinch) {
const char* treeShape = "x";
LayerIntRect layerVisibleRect[] = {
LayerIntRect(0, 0, 100, 100),
};
CreateScrollData(treeShape, layerVisibleRect);
SetScrollableFrameMetrics(root, ScrollableLayerGuid::START_SCROLL_ID,
CSSRect(0, 0, 100, 200));
// Set up some basic scroll snapping
ScrollSnapInfo snap;
snap.mScrollSnapStrictnessY = StyleScrollSnapStrictness::Mandatory;
snap.mSnapportSize =
CSSSize::ToAppUnits(layerVisibleRect[0].Size() * LayerToCSSScale(1.0));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(0 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 0, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{1}));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(100 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 100, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{2}));
// 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.
ModifyFrameMetrics(root, [&](ScrollMetadata& aSm, FrameMetrics& aMetrics) {
aSm.SetSnapInfo(ScrollSnapInfo(snap));
aMetrics.SetIsRootContent(true);
});
UniquePtr<ScopedLayerTreeRegistration> registration =
MakeUnique<ScopedLayerTreeRegistration>(LayersId{0}, 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();
}
// Currently fails on Android because on the platform we have a different
// VelocityTracker.
#ifndef MOZ_WIDGET_ANDROID
TEST_F(APZCSnappingTesterMock, SnapOnPanEndWithZeroVelocity) {
// Use pref values for desktop everywhere.
SCOPED_GFX_PREF_FLOAT("apz.fling_friction", 0.002);
SCOPED_GFX_PREF_FLOAT("apz.fling_stopped_threshold", 0.01);
SCOPED_GFX_PREF_FLOAT("apz.fling_curve_function_x1", 0.0);
SCOPED_GFX_PREF_FLOAT("apz.fling_curve_function_x2", 1.0);
SCOPED_GFX_PREF_FLOAT("apz.fling_curve_function_y1", 0.0);
SCOPED_GFX_PREF_FLOAT("apz.fling_curve_function_y2", 1.0);
SCOPED_GFX_PREF_INT("apz.velocity_relevance_time_ms", 100);
const char* treeShape = "x";
LayerIntRect layerVisibleRect[] = {
LayerIntRect(0, 0, 100, 100),
};
CreateScrollData(treeShape, layerVisibleRect);
SetScrollableFrameMetrics(root, ScrollableLayerGuid::START_SCROLL_ID,
CSSRect(0, 0, 100, 400));
// Set up two snap points, 30 and 100.
ScrollSnapInfo snap;
snap.mScrollSnapStrictnessY = StyleScrollSnapStrictness::Mandatory;
snap.mSnapportSize =
CSSSize::ToAppUnits(layerVisibleRect[0].Size() * LayerToCSSScale(1.0));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(30 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 30, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{1}));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(100 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 100, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{2}));
// Save the scroll snap info on the root APZC.
ModifyFrameMetrics(root, [&](ScrollMetadata& aSm, FrameMetrics& aMetrics) {
aSm.SetSnapInfo(ScrollSnapInfo(snap));
});
UniquePtr<ScopedLayerTreeRegistration> registration =
MakeUnique<ScopedLayerTreeRegistration>(LayersId{0}, mcc);
UpdateHitTestingTree();
RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
// Send a series of pan gestures to scroll to position at 50.
const ScreenIntPoint position = ScreenIntPoint(50, 30);
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_START, manager, position,
ScreenPoint(0, 10), mcc->Time());
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_PAN, manager, position,
ScreenPoint(0, 40), mcc->Time());
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
// Make sure the velocity just before sending a pan-end is zero.
EXPECT_EQ(apzc->GetVelocityVector().y, 0);
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_END, manager, position,
ScreenPoint(0, 0), mcc->Time());
// Now a smooth animation has been triggered for snapping to 30.
apzc->AssertStateIsSmoothMsdScroll();
apzc->AdvanceAnimationsUntilEnd();
// The snapped position should be 30 rather than 100 because it's the nearest
// snap point.
EXPECT_EQ(apzc->GetCurrentAsyncScrollOffset(
AsyncPanZoomController::eForEventHandling)
.y,
30);
}
// Smililar to above SnapOnPanEndWithZeroVelocity but with positive velocity so
// that the snap position would be the one in the scrolling direction.
TEST_F(APZCSnappingTesterMock, SnapOnPanEndWithPositiveVelocity) {
// Use pref values for desktop everywhere.
SCOPED_GFX_PREF_FLOAT("apz.fling_friction", 0.002);
SCOPED_GFX_PREF_FLOAT("apz.fling_stopped_threshold", 0.01);
SCOPED_GFX_PREF_FLOAT("apz.fling_curve_function_x1", 0.0);
SCOPED_GFX_PREF_FLOAT("apz.fling_curve_function_x2", 1.0);
SCOPED_GFX_PREF_FLOAT("apz.fling_curve_function_y1", 0.0);
SCOPED_GFX_PREF_FLOAT("apz.fling_curve_function_y2", 1.0);
SCOPED_GFX_PREF_INT("apz.velocity_relevance_time_ms", 100);
const char* treeShape = "x";
LayerIntRect layerVisibleRect[] = {
LayerIntRect(0, 0, 100, 100),
};
CreateScrollData(treeShape, layerVisibleRect);
SetScrollableFrameMetrics(root, ScrollableLayerGuid::START_SCROLL_ID,
CSSRect(0, 0, 100, 400));
// Set up two snap points, 30 and 100.
ScrollSnapInfo snap;
snap.mScrollSnapStrictnessY = StyleScrollSnapStrictness::Mandatory;
snap.mSnapportSize =
CSSSize::ToAppUnits(layerVisibleRect[0].Size() * LayerToCSSScale(1.0));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(30 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 30, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{1}));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(100 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 100, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{2}));
// Save the scroll snap info on the root APZC.
ModifyFrameMetrics(root, [&](ScrollMetadata& aSm, FrameMetrics& aMetrics) {
aSm.SetSnapInfo(ScrollSnapInfo(snap));
});
UniquePtr<ScopedLayerTreeRegistration> registration =
MakeUnique<ScopedLayerTreeRegistration>(LayersId{0}, mcc);
UpdateHitTestingTree();
RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
// Send a series of pan gestures that a pan-end event happens at 65
const ScreenIntPoint position = ScreenIntPoint(50, 30);
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_START, manager, position,
ScreenPoint(0, 10), mcc->Time());
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_PAN, manager, position,
ScreenPoint(0, 35), mcc->Time());
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_PAN, manager, position,
ScreenPoint(0, 20), mcc->Time());
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
// There should be positive velocity in this case.
EXPECT_GT(apzc->GetVelocityVector().y, 0);
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_END, manager, position,
ScreenPoint(0, 0), mcc->Time());
mcc->AdvanceByMillis(5);
// A smooth animation has been triggered by the pan-end event above.
apzc->AssertStateIsSmoothMsdScroll();
apzc->AdvanceAnimationsUntilEnd();
EXPECT_EQ(apzc->GetCurrentAsyncScrollOffset(
AsyncPanZoomController::eForEventHandling)
.y,
100);
}
#endif