Stack Trace for nsDOMMouseEvent::GetScreenX

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Attach a 'mousemove' event listener, move your mouse, access event.screenX: 

221 NS_METHOD nsDOMMouseEvent::GetScreenX(PRInt32* aScreenX)
222 {
223   NS_ENSURE_ARG_POINTER(aScreenX);
224   *aScreenX = GetScreenPoint().x;
225   return NS_OK;
226 }

this calls nsDOMUIEvent::GetScreenPoint: 

126 nsDOMUIEvent::GetScreenPoint()
127 {
128   if (!mEvent || 
129        (mEvent->eventStructType != NS_MOUSE_EVENT &&
130         mEvent->eventStructType != NS_POPUP_EVENT &&
131         mEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
132         mEvent->eventStructType != NS_MOZTOUCH_EVENT &&
133         mEvent->eventStructType != NS_DRAG_EVENT &&
134         mEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT)) {
135     return nsIntPoint(0, 0);
136   }
137 
138   if (!((nsGUIEvent*)mEvent)->widget ) {
139     return mEvent->refPoint;
140   }
141 
142   nsIntPoint offset = mEvent->refPoint +                       // <---------------------here
143     ((nsGUIEvent*)mEvent)->widget->WidgetToScreenOffset();
144   nscoord factor = mPresContext->DeviceContext()->UnscaledAppUnitsPerDevPixel();
145   return nsIntPoint(nsPresContext::AppUnitsToIntCSSPixels(offset.x * factor),
146                     nsPresContext::AppUnitsToIntCSSPixels(offset.y * factor));
147 }



#0  nsDOMMouseEvent::GetScreenX (this=0x11ac73880, aScreenX=0x7fff5fbf9478) at /Users/dave/repos/mozilla-central/content/events/src/nsDOMMouseEvent.cpp:240
#1  0x000000010247b756 in nsIDOMMouseEvent_GetScreenX (cx=0x122aa7ab0, obj=0x14c2a2190, id={asBits = 4746707680}, vp=0x11a500238) at /Users/dave/repos/mozilla-central/objdir-debug/js/xpconnect/src/dom_quickstubs.cpp:10873
#2  0x00000001012e22f4 in js::CallJSPropertyOp (cx=0x122aa7ab0, op=0x10247b6cc <nsIDOMMouseEvent_GetScreenX(JSContext*, JSObject*, jsid, JS::Value*)>, receiver=0x14c2a2190, id={asBits = 4746707680}, vp=0x11a500238) at jscntxtinlines.h:347
#3  0x00000001012e3317 in js::Shape::get (this=0x14c279800, cx=0x122aa7ab0, receiver=0x14c2a2190, obj=0x14c2a2190, pobj=0x14c2a2030, vp=0x11a500238) at jsscopeinlines.h:295
#4  0x00000001012d4960 in js_NativeGetInline (cx=0x122aa7ab0, receiver=0x14c2a2190, obj=0x14c2a2190, pobj=0x14c2a2030, shape=0x14c279800, getHow=0, vp=0x11a500238) at /Users/dave/repos/mozilla-central/js/src/jsobj.cpp:5771
#5  0x00000001012d6934 in js_GetPropertyHelperInline (cx=0x122aa7ab0, obj=0x14c2a2190, receiver=0x14c2a2190, id={asBits = 4746707680}, getHow=0, vp=0x11a500238) at /Users/dave/repos/mozilla-central/js/src/jsobj.cpp:5951
#6  0x00000001012d69a2 in js_GetProperty (cx=0x122aa7ab0, obj=0x14c2a2190, receiver=0x14c2a2190, id={asBits = 4746707680}, vp=0x11a500238) at /Users/dave/repos/mozilla-central/js/src/jsobj.cpp:5967
#7  0x00000001012c8834 in JSObject::getGeneric (this=0x14c2a2190, cx=0x122aa7ab0, receiver=0x14c2a2190, id={asBits = 4746707680}, vp=0x11a500238) at jsobjinlines.h:198
#8  0x00000001012e4584 in JSObject::getGeneric (this=0x14c2a2190, cx=0x122aa7ab0, id={asBits = 4746707680}, vp=0x11a500238) at jsobjinlines.h:213
#9  0x000000010124df55 in JSObject::getProperty (this=0x14c2a2190, cx=0x122aa7ab0, name=0x11aed02e0, vp=0x11a500238) at jsobjinlines.h:219
#10 0x00000001012b6e69 in js::Interpret (cx=0x122aa7ab0, entryFrame=0x11a5000d8, interpMode=js::JSINTERP_NORMAL) at /Users/dave/repos/mozilla-central/js/src/jsinterp.cpp:3821
#11 0x00000001012c4c9f in js::RunScript (cx=0x122aa7ab0, script=0x149c00f30, fp=0x11a5000d8) at /Users/dave/repos/mozilla-central/js/src/jsinterp.cpp:584
#12 0x00000001012c52aa in js::InvokeKernel (cx=0x122aa7ab0, args={<js::CallReceiver> = {usedRval_ = false, argv_ = 0x11a5000d0}, argc_ = 1}, construct=js::NO_CONSTRUCT) at /Users/dave/repos/mozilla-central/js/src/jsinterp.cpp:647
#13 0x00000001012c92b7 in js::Invoke (cx=0x122aa7ab0, args=@0x7fff5fbfabc0, construct=js::NO_CONSTRUCT) at jsinterp.h:148
#14 0x00000001030c1f5d in js_fun_apply (cx=0x122aa7ab0, argc=2, vp=0x11a5000a0) at /Users/dave/repos/mozilla-central/js/src/jsfun.cpp:1835
#15 0x00000001012c822e in js::CallJSNative (cx=0x122aa7ab0, native=0x1030c1cc7 <js_fun_apply(JSContext*, unsigned int, JS::Value*)>, args=@0x7fff5fbfad80) at jscntxtinlines.h:297
#16 0x00000001012c51cb in js::InvokeKernel (cx=0x122aa7ab0, args={<js::CallReceiver> = {usedRval_ = false, argv_ = 0x11a5000b0}, argc_ = 2}, construct=js::NO_CONSTRUCT) at /Users/dave/repos/mozilla-central/js/src/jsinterp.cpp:629
#17 0x00000001012b7cb3 in js::Interpret (cx=0x122aa7ab0, entryFrame=0x11a500038, interpMode=js::JSINTERP_NORMAL) at /Users/dave/repos/mozilla-central/js/src/jsinterp.cpp:3950
#18 0x00000001012c4c9f in js::RunScript (cx=0x122aa7ab0, script=0x149c00b20, fp=0x11a500038) at /Users/dave/repos/mozilla-central/js/src/jsinterp.cpp:584
#19 0x00000001012c52aa in js::InvokeKernel (cx=0x122aa7ab0, args={<js::CallReceiver> = {usedRval_ = false, argv_ = 0x11a500030}, argc_ = 1}, construct=js::NO_CONSTRUCT) at /Users/dave/repos/mozilla-central/js/src/jsinterp.cpp:647
#20 0x00000001012c92b7 in js::Invoke (cx=0x122aa7ab0, args=@0x7fff5fbfc1b0, construct=js::NO_CONSTRUCT) at jsinterp.h:148
#21 0x00000001012c56ca in js::Invoke (cx=0x122aa7ab0, thisv=@0x7fff5fbfc280, fval=@0x7fff5fbfc248, argc=1, argv=0x7fff5fbfc960, rval=0x7fff5fbfc680) at /Users/dave/repos/mozilla-central/js/src/jsinterp.cpp:679
#22 0x000000010306961c in JS_CallFunctionValue (cx=0x122aa7ab0, obj=0x148aa1450, fval={data = {asBits = 18445477441853023048, debugView = {payload47 = 5538669384, tag = JSVAL_TAG_OBJECT}, s = {payload = {i32 = 1243702088, u32 = 1243702088, why = 1243702088}}, asDouble = -nan(0xb80014a216348), asPtr = 0xfffb80014a216348, asWord = 18445477441853023048}}, argc=1, argv=0x7fff5fbfc960, rval=0x7fff5fbfc680) at /Users/dave/repos/mozilla-central/js/src/jsapi.cpp:5223
#23 0x00000001024486c9 in nsXPCWrappedJSClass::CallMethod (this=0x11c8919c0, wrapper=0x11acad000, methodIndex=3, info=0x11971e528, nativeParams=0x7fff5fbfcab0) at /Users/dave/repos/mozilla-central/js/xpconnect/src/XPCWrappedJSClass.cpp:1530
#24 0x000000010243f380 in nsXPCWrappedJS::CallMethod (this=0x11acad000, methodIndex=3, info=0x11971e528, params=0x7fff5fbfcab0) at /Users/dave/repos/mozilla-central/js/xpconnect/src/XPCWrappedJS.cpp:611
#25 0x0000000102bd055c in PrepareAndDispatch (self=0x11ac0d400, methodIndex=3, args=0x7fff5fbfcc30, gpregs=0x7fff5fbfcbb0, fpregs=0x7fff5fbfcbe0) at /Users/dave/repos/mozilla-central/xpcom/reflect/xptcall/src/md/unix/xptcstubs_x86_64_darwin.cpp:153
#26 0x0000000102bcefbb in SharedStub () at xpt_struct.h:334
#27 0x0000000101c4a5a1 in nsEventListenerManager::HandleEventSubType (this=0x11c9cae90, aListenerStruct=0x1270a18a8, aListener=0x11ac0d400, aDOMEvent=0x11ac73880, aCurrentTarget=0x12661f000, aPhaseFlags=2, aPusher=0x7fff5fbfcf80) at /Users/dave/repos/mozilla-central/content/events/src/nsEventListenerManager.cpp:736
#28 0x0000000101c4a7ba in nsEventListenerManager::HandleEventInternal (this=0x11c9cae90, aPresContext=0x11cc08c00, aEvent=0x7fff5fbfd090, aDOMEvent=0x7fff5fbfcf60, aCurrentTarget=0x12661f000, aFlags=2, aEventStatus=0x7fff5fbfcf68, aPusher=0x7fff5fbfcf80) at /Users/dave/repos/mozilla-central/content/events/src/nsEventListenerManager.cpp:793
#29 0x0000000101c7bf27 in nsEventListenerManager::HandleEvent (this=0x11c9cae90, aPresContext=0x11cc08c00, aEvent=0x7fff5fbfd090, aDOMEvent=0x7fff5fbfcf60, aCurrentTarget=0x12661f000, aFlags=2, aEventStatus=0x7fff5fbfcf68, aPusher=0x7fff5fbfcf80) at nsEventListenerManager.h:160
#30 0x0000000101c7c0d3 in nsEventTargetChainItem::HandleEvent (this=0x11b10d7a8, aVisitor=@0x7fff5fbfcf50, aFlags=2, aMayHaveNewListenerManagers=false, aPusher=0x7fff5fbfcf80) at /Users/dave/repos/mozilla-central/content/events/src/nsEventDispatcher.cpp:215
#31 0x0000000101c7a41a in nsEventTargetChainItem::HandleEventTargetChain (this=0x11b10d770, aVisitor=@0x7fff5fbfcf50, aFlags=6, aCallback=0x7fff5fbfd110, aMayHaveNewListenerManagers=false, aPusher=0x7fff5fbfcf80) at /Users/dave/repos/mozilla-central/content/events/src/nsEventDispatcher.cpp:367
#32 0x0000000101c7b336 in nsEventDispatcher::Dispatch (aTarget=0x11b75f280, aPresContext=0x11cc08c00, aEvent=0x7fff5fbfd090, aDOMEvent=0x0, aEventStatus=0x7fff5fbfd13c, aCallback=0x7fff5fbfd110, aTargets=0x0) at /Users/dave/repos/mozilla-central/content/events/src/nsEventDispatcher.cpp:677
#33 0x0000000101c5161d in nsEventStateManager::DispatchMouseEvent (this=0x124776e10, aEvent=0x7fff5fbfdbb0, aMessage=331, aTargetContent=0x11b75f280, aRelatedContent=0x11bae4980) at /Users/dave/repos/mozilla-central/content/events/src/nsEventStateManager.cpp:3834
#34 0x0000000101c51b9b in nsEventStateManager::NotifyMouseOver (this=0x124776e10, aEvent=0x7fff5fbfdbb0, aContent=0x11b75f280) at /Users/dave/repos/mozilla-central/content/events/src/nsEventStateManager.cpp:4003
#35 0x0000000101c51cf4 in nsEventStateManager::GenerateMouseEnterExit (this=0x124776e10, aEvent=0x7fff5fbfdbb0) at /Users/dave/repos/mozilla-central/content/events/src/nsEventStateManager.cpp:4032
#36 0x0000000101c5a50a in nsEventStateManager::PreHandleEvent (this=0x124776e10, aPresContext=0x11cc08c00, aEvent=0x7fff5fbfdbb0, aTargetFrame=0x14b20fe90, aStatus=0x7fff5fbfd83c, aView=0x1229aa480) at /Users/dave/repos/mozilla-central/content/events/src/nsEventStateManager.cpp:1150
#37 0x00000001017e0669 in PresShell::HandleEventInternal (this=0x1229c6c00, aEvent=0x7fff5fbfdbb0, aView=0x1229aa480, aStatus=0x7fff5fbfd83c) at /Users/dave/repos/mozilla-central/layout/base/nsPresShell.cpp:6450
#38 0x00000001017e0bd2 in PresShell::HandlePositionedEvent (this=0x1229c6c00, aView=0x1229aa480, aTargetFrame=0x14b20fe90, aEvent=0x7fff5fbfdbb0, aEventStatus=0x7fff5fbfd83c) at /Users/dave/repos/mozilla-central/layout/base/nsPresShell.cpp:6222
#39 0x00000001017e1de7 in PresShell::HandleEvent (this=0x11bc5a800, aView=0x11bbc9100, aEvent=0x7fff5fbfdbb0, aDontRetargetEvents=false, aEventStatus=0x7fff5fbfd83c) at /Users/dave/repos/mozilla-central/layout/base/nsPresShell.cpp:6044
#40 0x0000000101e77f32 in nsViewManager::HandleEvent (this=0x11bc23e60, aView=0x11bbc9100, aEvent=0x7fff5fbfdbb0) at /Users/dave/repos/mozilla-central/view/src/nsViewManager.cpp:1023
#41 0x0000000101e7ab1b in nsViewManager::DispatchEvent (this=0x11bc23e60, aEvent=0x7fff5fbfdbb0, aView=0x11bbc9100, aStatus=0x7fff5fbfda2c) at /Users/dave/repos/mozilla-central/view/src/nsViewManager.cpp:1001
#42 0x0000000101e75aa3 in HandleEvent (aEvent=0x7fff5fbfdbb0) at /Users/dave/repos/mozilla-central/view/src/nsView.cpp:159
#43 0x00000001028c8bd1 in nsChildView::DispatchEvent (this=0x10031b700, event=0x7fff5fbfdbb0, aStatus=@0x7fff5fbfdb4c) at /Users/dave/repos/mozilla-central/widget/src/cocoa/nsChildView.mm:1517
#44 0x00000001028c3a72 in nsChildView::DispatchWindowEvent (this=0x10031b700, event=@0x7fff5fbfdbb0) at /Users/dave/repos/mozilla-central/widget/src/cocoa/nsChildView.mm:1527
#45 0x00000001028ce8bb in -[ChildView handleMouseMoved:] (self=0x11bb69e00, _cmd=0x7fff84e1c864, theEvent=0x11acc1ac0) at /Users/dave/repos/mozilla-central/widget/src/cocoa/nsChildView.mm:3433
#46 0x00000001028c5549 in ChildViewMouseTracker::MouseMoved (aEvent=0x11acc1ac0) at /Users/dave/repos/mozilla-central/widget/src/cocoa/nsChildView.mm:4988
#47 0x00000001028bbd19 in -[BaseWindow mouseMoved:] (self=0x1003928a0, _cmd=0x7fff848d20ae, aEvent=0x11acc1ac0) at /Users/dave/repos/mozilla-central/widget/src/cocoa/nsCocoaWindow.mm:2142
#48 0x00007fff842b1833 in -[NSWindow sendEvent:] ()
#49 0x00000001028b9ef8 in -[ToolbarWindow sendEvent:] (self=0x1003928a0, _cmd=0x7fff848af2c0, anEvent=0x11acc1ac0) at /Users/dave/repos/mozilla-central/widget/src/cocoa/nsCocoaWindow.mm:2468
#50 0x00007fff841e6afa in -[NSApplication sendEvent:] ()
#51 0x00000001028b4d6d in -[GeckoNSApplication sendEvent:] (self=0x1003b3350, _cmd=0x7fff848af2c0, anEvent=0x11acc1ac0) at /Users/dave/repos/mozilla-central/widget/src/cocoa/nsAppShell.mm:192
#52 0x00007fff8417d6de in -[NSApplication run] ()
#53 0x00000001028b5bd2 in nsAppShell::Run (this=0x100304b00) at /Users/dave/repos/mozilla-central/widget/src/cocoa/nsAppShell.mm:771
#54 0x000000010261255b in nsAppStartup::Run (this=0x11963ff60) at /Users/dave/repos/mozilla-central/toolkit/components/startup/nsAppStartup.cpp:228
#55 0x000000010144b951 in XRE_main (argc=3, argv=0x7fff5fbff5d0, aAppData=0x1003059b0) at /Users/dave/repos/mozilla-central/toolkit/xre/nsAppRunner.cpp:3551
#56 0x0000000100001b31 in do_main (exePath=0x7fff5fbff1a0 "/Users/dave/repos/mozilla-central/./objdir-debug/dist/NightlyDebug.app/Contents/MacOS/libxpcom.dylib", argc=3, argv=0x7fff5fbff5d0) at /Users/dave/repos/mozilla-central/browser/app/nsBrowserApp.cpp:198
#57 0x0000000100001d98 in main (argc=3, argv=0x7fff5fbff5d0) at /Users/dave/repos/mozilla-central/browser/app/nsBrowserApp.cpp:281
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