bool
ClientLayerManager::ProgressiveUpdateCallback(bool aHasPendingNewThebesContent,
FrameMetrics& aMetrics,
bool aDrawingCritical)
{
#ifdef MOZ_WIDGET_ANDROID
MOZ_ASSERT(aMetrics.IsScrollable());
// This is derived from the code in
// gfx/layers/ipc/CompositorParent.cpp::TransformShadowTree.
CSSToLayerScale paintScale = aMetrics.LayersPixelsPerCSSPixel().ToScaleFactor();
const CSSRect& metricsDisplayPort =
(aDrawingCritical && !aMetrics.GetCriticalDisplayPort().IsEmpty()) ?
aMetrics.GetCriticalDisplayPort() : aMetrics.GetDisplayPort();
LayerRect displayPort = (metricsDisplayPort + aMetrics.GetScrollOffset()) * paintScale;
ParentLayerPoint scrollOffset;
CSSToParentLayerScale zoom;
bool ret = AndroidBridge::Bridge()->ProgressiveUpdateCallback(
aHasPendingNewThebesContent, displayPort, paintScale.scale, aDrawingCritical,
scrollOffset, zoom);
aMetrics.SetScrollOffset(scrollOffset / zoom);
aMetrics.SetZoom(CSSToParentLayerScale2D(zoom));
return ret;
#else
return false;
#endif
}
FrameMetrics GetPinchableFrameMetrics()
{
FrameMetrics fm;
fm.SetCompositionBounds(ParentLayerRect(200, 200, 100, 200));
fm.SetScrollableRect(CSSRect(0, 0, 980, 1000));
fm.SetScrollOffset(CSSPoint(300, 300));
fm.SetZoom(CSSToParentLayerScale2D(2.0, 2.0));
// APZC only allows zooming on the root scrollable frame.
fm.SetIsRootContent(true);
// the visible area of the document in CSS pixels is x=300 y=300 w=50 h=100
return fm;
}
TEST_F(APZCBasicTester, Overzoom) {
// the visible area of the document in CSS pixels is x=10 y=0 w=100 h=100
FrameMetrics fm;
fm.SetCompositionBounds(ParentLayerRect(0, 0, 100, 100));
fm.SetScrollableRect(CSSRect(0, 0, 125, 150));
fm.SetScrollOffset(CSSPoint(10, 0));
fm.SetZoom(CSSToParentLayerScale2D(1.0, 1.0));
fm.SetIsRootContent(true);
apzc->SetFrameMetrics(fm);
MakeApzcZoomable();
EXPECT_CALL(*mcc, RequestContentRepaint(_)).Times(1);
PinchWithPinchInputAndCheckStatus(apzc, ScreenIntPoint(50, 50), 0.5, true);
fm = apzc->GetFrameMetrics();
EXPECT_EQ(0.8f, fm.GetZoom().ToScaleFactor().scale);
// bug 936721 - PGO builds introduce rounding error so
// use a fuzzy match instead
EXPECT_LT(std::abs(fm.GetScrollOffset().x), 1e-5);
EXPECT_LT(std::abs(fm.GetScrollOffset().y), 1e-5);
}
void DoPinchTest(bool aShouldTriggerPinch,
nsTArray<uint32_t> *aAllowedTouchBehaviors = nullptr)
{
apzc->SetFrameMetrics(GetPinchableFrameMetrics());
MakeApzcZoomable();
if (aShouldTriggerPinch) {
// One repaint request for each gesture.
EXPECT_CALL(*mcc, RequestContentRepaint(_)).Times(2);
} else {
EXPECT_CALL(*mcc, RequestContentRepaint(_)).Times(0);
}
int touchInputId = 0;
if (mGestureBehavior == AsyncPanZoomController::USE_GESTURE_DETECTOR) {
PinchWithTouchInputAndCheckStatus(apzc, 250, 300, 1.25, touchInputId, aShouldTriggerPinch, aAllowedTouchBehaviors);
} else {
PinchWithPinchInputAndCheckStatus(apzc, 250, 300, 1.25, aShouldTriggerPinch);
}
FrameMetrics fm = apzc->GetFrameMetrics();
if (aShouldTriggerPinch) {
// the visible area of the document in CSS pixels is now x=305 y=310 w=40 h=80
EXPECT_EQ(2.5f, fm.GetZoom().ToScaleFactor().scale);
EXPECT_EQ(305, fm.GetScrollOffset().x);
EXPECT_EQ(310, fm.GetScrollOffset().y);
} else {
// The frame metrics should stay the same since touch-action:none makes
// apzc ignore pinch gestures.
EXPECT_EQ(2.0f, fm.GetZoom().ToScaleFactor().scale);
EXPECT_EQ(300, fm.GetScrollOffset().x);
EXPECT_EQ(300, fm.GetScrollOffset().y);
}
// part 2 of the test, move to the top-right corner of the page and pinch and
// make sure we stay in the correct spot
fm.SetZoom(CSSToParentLayerScale2D(2.0, 2.0));
fm.SetScrollOffset(CSSPoint(930, 5));
apzc->SetFrameMetrics(fm);
// the visible area of the document in CSS pixels is x=930 y=5 w=50 h=100
if (mGestureBehavior == AsyncPanZoomController::USE_GESTURE_DETECTOR) {
PinchWithTouchInputAndCheckStatus(apzc, 250, 300, 0.5, touchInputId, aShouldTriggerPinch, aAllowedTouchBehaviors);
} else {
PinchWithPinchInputAndCheckStatus(apzc, 250, 300, 0.5, aShouldTriggerPinch);
}
fm = apzc->GetFrameMetrics();
if (aShouldTriggerPinch) {
// the visible area of the document in CSS pixels is now x=880 y=0 w=100 h=200
EXPECT_EQ(1.0f, fm.GetZoom().ToScaleFactor().scale);
EXPECT_EQ(880, fm.GetScrollOffset().x);
EXPECT_EQ(0, fm.GetScrollOffset().y);
} else {
EXPECT_EQ(2.0f, fm.GetZoom().ToScaleFactor().scale);
EXPECT_EQ(930, fm.GetScrollOffset().x);
EXPECT_EQ(5, fm.GetScrollOffset().y);
}
}