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Bug 1073250 - Gtest for stuck-in-apz-overscroll bug. r=kats

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Botond Ballo 2014-10-03 20:35:16 -04:00
parent 4fe31e0a30
commit 30b7ddceec
1 changed files with 86 additions and 0 deletions
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86
gfx/tests/gtest/TestAsyncPanZoomController.cpp
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@ -1612,6 +1612,55 @@ protected:
}
};
// A version of ApzcPan() that routes the pan through the tree manager,
// so that the tree manager has the appropriate state for testing.
static void
ApzctmPan(APZCTreeManager* aTreeManager,
int& aTime,
int aTouchStartY,
int aTouchEndY,
bool aKeepFingerDown = false)
{
// TODO: Reuse some code between this and ApzcPan().
// Reduce the touch start tolerance to a tiny value.
// We can't do what ApzcPan() does to overcome the tolerance (send the
// touch-start at (aTouchStartY + some_large_value)) because the tree manager
// does hit testing based on the touch-start coordinates, and a different
// APZC than the one we intend might be hit.
SCOPED_GFX_PREF(APZTouchStartTolerance, float, 1.0f / 1000.0f);
const int OVERCOME_TOUCH_TOLERANCE = 1;
const int TIME_BETWEEN_TOUCH_EVENT = 100;
// Make sure the move is large enough to not be handled as a tap
MultiTouchInput mti = MultiTouchInput(MultiTouchInput::MULTITOUCH_START, aTime, TimeStamp(), 0);
mti.mTouches.AppendElement(SingleTouchData(0, ScreenIntPoint(10, aTouchStartY), ScreenSize(0, 0), 0, 0));
aTreeManager->ReceiveInputEvent(mti, nullptr);
aTime += TIME_BETWEEN_TOUCH_EVENT;
mti = MultiTouchInput(MultiTouchInput::MULTITOUCH_MOVE, aTime, TimeStamp(), 0);
mti.mTouches.AppendElement(SingleTouchData(0, ScreenIntPoint(10, aTouchStartY + OVERCOME_TOUCH_TOLERANCE), ScreenSize(0, 0), 0, 0));
aTreeManager->ReceiveInputEvent(mti, nullptr);
aTime += TIME_BETWEEN_TOUCH_EVENT;
mti = MultiTouchInput(MultiTouchInput::MULTITOUCH_MOVE, aTime, TimeStamp(), 0);
mti.mTouches.AppendElement(SingleTouchData(0, ScreenIntPoint(10, aTouchEndY), ScreenSize(0, 0), 0, 0));
aTreeManager->ReceiveInputEvent(mti, nullptr);
aTime += TIME_BETWEEN_TOUCH_EVENT;
if (!aKeepFingerDown) {
mti = MultiTouchInput(MultiTouchInput::MULTITOUCH_END, aTime, TimeStamp(), 0);
mti.mTouches.AppendElement(SingleTouchData(0, ScreenIntPoint(10, aTouchEndY), ScreenSize(0, 0), 0, 0));
aTreeManager->ReceiveInputEvent(mti, nullptr);
}
aTime += TIME_BETWEEN_TOUCH_EVENT;
}
class APZHitTestingTester : public APZCTreeManagerTester {
protected:
Matrix4x4 transformToApzc;
@ -2189,6 +2238,43 @@ TEST_F(APZOverscrollHandoffTester, LayerStructureChangesWhileEventsArePending) {
EXPECT_EQ(-10, middleApzc->GetFrameMetrics().GetScrollOffset().y);
}
// Test that putting a second finger down on an APZC while a down-chain APZC
// is overscrolled doesn't result in being stuck in overscroll.
TEST_F(APZOverscrollHandoffTester, StuckInOverscroll_Bug1073250) {
// Enable overscrolling.
SCOPED_GFX_PREF(APZOverscrollEnabled, bool, true);
CreateOverscrollHandoffLayerTree1();
TestAsyncPanZoomController* child = ApzcOf(layers[1]);
// Pan, causing the parent APZC to overscroll.
int time = 0;
ApzctmPan(manager, time, 10, 40, true /* keep finger down */);
EXPECT_FALSE(child->IsOverscrolled());
EXPECT_TRUE(rootApzc->IsOverscrolled());
// Put a second finger down.
MultiTouchInput secondFingerDown(MultiTouchInput::MULTITOUCH_START, 0, TimeStamp(), 0);
// Use the same touch identifier for the first touch (0) as ApzctmPan(). (A bit hacky.)
secondFingerDown.mTouches.AppendElement(SingleTouchData(0, ScreenIntPoint(10, 40), ScreenSize(0, 0), 0, 0));
secondFingerDown.mTouches.AppendElement(SingleTouchData(1, ScreenIntPoint(30, 20), ScreenSize(0, 0), 0, 0));
manager->ReceiveInputEvent(secondFingerDown, nullptr);
// Release the fingers.
MultiTouchInput fingersUp = secondFingerDown;
fingersUp.mType = MultiTouchInput::MULTITOUCH_END;
manager->ReceiveInputEvent(fingersUp, nullptr);
// Allow any animations to run their course.
child->AdvanceAnimationsUntilEnd(testStartTime);
rootApzc->AdvanceAnimationsUntilEnd(testStartTime);
// Make sure nothing is overscrolled.
EXPECT_FALSE(child->IsOverscrolled());
EXPECT_FALSE(rootApzc->IsOverscrolled());
}
// Here we test that if two flings are happening simultaneously, overscroll
// is handed off correctly for each.
TEST_F(APZOverscrollHandoffTester, SimultaneousFlings) {