Hello,
Could you review the updated fix:
http://cr.openjdk.java.net/~alexsch/8166591/webrev.05
The momentumPhase is used to detect the trackpad events.
Thanks,
Alexandr.
On 30/09/16 14:58, Sergey Malenkov wrote:
# C [AppKit+0x3a528e] -[NSApplication _crashOnException:]+0x6d
The app is crashed as soon as I start scrolling. Investigating...
May be it is my fault during backporting.
Sorry, It was may fault.
LWCToolkit.m:
+// SCROLL EVENT MASK
+#define SCROLL_PHASE_UNSUPPORTED 1
...
replace the comment with the following one:
+// TRACKPAD SCROLL EVENT PHASE
I discovered how we should detect mouse event properly: use both
properties phase and momentumPhase.
https://developer.apple.com/library/prerelease/content/documentation/Cocoa/Conceptual/EventOverview/HandlingTouchEvents/HandlingTouchEvents.html
"The momentumPhase property helps you detect momentum scrolling, in
which the hardware continues to issue scroll wheel events even though
the user is no longer physically scrolling."
if (phase==NULL) && (momentumPhase==NULL) -> this is a mouse event.
scrolling by trackpad generates the following events:
phase=mayBegan momentumPhase=null
phase=began momentumPhase=null
phase=continued momentumPhase=null
...
phase=continued momentumPhase=null
phase=ended momentumPhase=null
phase=null momentumPhase=began
phase=null momentumPhase=continued
...
phase=null momentumPhase=continued
phase=null momentumPhase=ended
So, we should generate PHASE_UNSUPPORTED only
if ((phase == NULL) && (momentumPhase == NULL))
