diff options
Diffstat (limited to 'gfx/layers/apz/src/AsyncPanZoomController.cpp')
| -rw-r--r-- | gfx/layers/apz/src/AsyncPanZoomController.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gfx/layers/apz/src/AsyncPanZoomController.cpp b/gfx/layers/apz/src/AsyncPanZoomController.cpp index a070340421..84b4a95b9e 100644 --- a/gfx/layers/apz/src/AsyncPanZoomController.cpp +++ b/gfx/layers/apz/src/AsyncPanZoomController.cpp @@ -1988,6 +1988,10 @@ ParentLayerPoint AsyncPanZoomController::GetScrollWheelDelta( // Apply user-set multipliers. delta.x *= aMultiplierX; delta.y *= aMultiplierY; + APZC_LOGV( + "user-multiplied delta is %s (deltaType %d, line size %s, page size %s)", + ToString(delta).c_str(), (int)aEvent.mDeltaType, + ToString(scrollAmount).c_str(), ToString(pageScrollSize).c_str()); // For the conditions under which we allow system scroll overrides, see // WidgetWheelEvent::OverriddenDelta{X,Y}. @@ -1999,6 +2003,7 @@ ParentLayerPoint AsyncPanZoomController::GetScrollWheelDelta( aEvent.mAllowToOverrideSystemScrollSpeed) { delta.x = WidgetWheelEvent::ComputeOverriddenDelta(delta.x, false); delta.y = WidgetWheelEvent::ComputeOverriddenDelta(delta.y, true); + APZC_LOGV("overridden delta is %s", ToString(delta).c_str()); } // If this is a line scroll, and this event was part of a scroll series, then @@ -2258,6 +2263,8 @@ bool AsyncPanZoomController::AllowOneTouchPinch() const { // Return whether or not the underlying layer can be scrolled on either axis. bool AsyncPanZoomController::CanScroll(const InputData& aEvent) const { ParentLayerPoint delta = GetDeltaForEvent(aEvent); + APZC_LOGV_DETAIL("CanScroll: event delta is %s", this, + ToString(delta).c_str()); if (!delta.x && !delta.y) { return false; } @@ -2330,6 +2337,9 @@ bool AsyncPanZoomController::CanScrollWithWheel( disregardedDirection != Some(ScrollDirection::eVertical)) { return true; } + APZC_LOGV_FM(Metrics(), + "cannot scroll with wheel (disregarded direction is %s)", + ToString(disregardedDirection).c_str()); return false; } |