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Bug 563878. Part 15. Fix GetOffsetTo callsites. r=mats

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This commit is contained in:
Timothy Nikkel 2010-07-18 21:23:48 -05:00
parent 8672c57994
commit 20d255fcc2
14 changed files with 129 additions and 71 deletions
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16
accessible/src/base/nsCoreUtils.cpp
View File

@ -163,16 +163,12 @@ nsCoreUtils::DispatchMouseEvent(PRUint32 aEventType,
if (!frame)
return PR_FALSE;
nsIFrame* rootFrame = aPresShell->GetRootFrame();
if (!rootFrame)
return PR_FALSE;
nsCOMPtr<nsIWidget> rootWidget = rootFrame->GetNearestWidget();
if (!rootWidget)
return PR_FALSE;
// Compute x and y coordinates.
nsPoint point = frame->GetOffsetToExternal(rootFrame);
nsPoint point;
nsCOMPtr<nsIWidget> widget = frame->GetNearestWidget(point);
if (!widget)
return PR_FALSE;
nsSize size = frame->GetSize();
nsPresContext* presContext = aPresShell->GetPresContext();
@ -181,7 +177,7 @@ nsCoreUtils::DispatchMouseEvent(PRUint32 aEventType,
PRInt32 y = presContext->AppUnitsToDevPixels(point.y + size.height / 2);
// Fire mouse event.
DispatchMouseEvent(aEventType, x, y, aContent, frame, aPresShell, rootWidget);
DispatchMouseEvent(aEventType, x, y, aContent, frame, aPresShell, widget);
return PR_TRUE;
}

6
content/events/src/nsContentEventHandler.cpp
View File

@ -797,7 +797,11 @@ nsContentEventHandler::OnQueryCharacterAtPoint(nsQueryContentEvent* aEvent)
aEvent->mSucceeded = PR_TRUE;
return NS_OK;
}
nsPoint ptInTarget = ptInRoot - targetFrame->GetOffsetTo(rootFrame);
nsPoint ptInTarget = ptInRoot + rootFrame->GetOffsetToCrossDoc(targetFrame);
PRInt32 rootAPD = rootFrame->PresContext()->AppUnitsPerDevPixel();
PRInt32 targetAPD = targetFrame->PresContext()->AppUnitsPerDevPixel();
ptInTarget = ptInTarget.ConvertAppUnits(rootAPD, targetAPD);
nsTextFrame* textframe = static_cast<nsTextFrame*>(targetFrame);
nsIFrame::ContentOffsets offsets =
textframe->GetCharacterOffsetAtFramePoint(ptInTarget);

18
dom/base/nsDOMWindowUtils.cpp
View File

@ -266,7 +266,11 @@ nsDOMWindowUtils::SendMouseEvent(const nsAString& aType,
event.time = PR_IntervalNow();
event.flags |= NS_EVENT_FLAG_SYNTHETIC_TEST_EVENT;
float appPerDev = float(widget->GetDeviceContext()->AppUnitsPerDevPixel());
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_ERROR_FAILURE;
PRInt32 appPerDev = presContext->AppUnitsPerDevPixel();
event.refPoint.x =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aX) + offset.x,
appPerDev);
@ -318,7 +322,11 @@ nsDOMWindowUtils::SendMouseScrollEvent(const nsAString& aType,
event.time = PR_IntervalNow();
float appPerDev = float(widget->GetDeviceContext()->AppUnitsPerDevPixel());
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_ERROR_FAILURE;
PRInt32 appPerDev = presContext->AppUnitsPerDevPixel();
event.refPoint.x =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aX) + offset.x,
appPerDev);
@ -596,7 +604,11 @@ nsDOMWindowUtils::SendSimpleGestureEvent(const nsAString& aType,
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? PR_TRUE : PR_FALSE;
event.time = PR_IntervalNow();
float appPerDev = float(widget->GetDeviceContext()->AppUnitsPerDevPixel());
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_ERROR_FAILURE;
PRInt32 appPerDev = presContext->AppUnitsPerDevPixel();
event.refPoint.x =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aX) + offset.x,
appPerDev);

6
dom/base/nsDOMWindowUtils.h
View File

@ -54,8 +54,10 @@ public:
protected:
nsRefPtr<nsGlobalWindow> mWindow;
// If aOffset is non-null, it gets filled in with an offset, in app
// units, that should be added to any event offset we're given.
// If aOffset is non-null, it gets filled in with the offset of the root
// frame of our window to the nearest widget in the app units of our window.
// Add this offset to any event offset we're given to make it relative to the
// widget returned by GetWidget.
nsIWidget* GetWidget(nsPoint* aOffset = nsnull);
nsIWidget* GetWidgetForElement(nsIDOMElement* aElement);

8
layout/base/nsLayoutUtils.cpp
View File

@ -800,6 +800,12 @@ nsLayoutUtils::GetEventCoordinatesRelativeTo(const nsEvent* aEvent, nsIFrame* aF
if (widgetToView == nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE))
return nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
// Convert from root document app units to app units of the document aFrame
// is in.
PRInt32 rootAPD = rootFrame->PresContext()->AppUnitsPerDevPixel();
PRInt32 localAPD = aFrame->PresContext()->AppUnitsPerDevPixel();
widgetToView = widgetToView.ConvertAppUnits(rootAPD, localAPD);
/* If we encountered a transform, we can't do simple arithmetic to figure
* out how to convert back to aFrame's coordinates and must use the CTM.
*/
@ -809,7 +815,7 @@ nsLayoutUtils::GetEventCoordinatesRelativeTo(const nsEvent* aEvent, nsIFrame* aF
/* Otherwise, all coordinate systems are translations of one another,
* so we can just subtract out the different.
*/
return widgetToView - aFrame->GetOffsetTo(rootFrame);
return widgetToView - aFrame->GetOffsetToCrossDoc(rootFrame);
}
nsIFrame*

11
layout/base/nsPresContext.cpp
View File

@ -2386,6 +2386,7 @@ nsRootPresContext::UnregisterPluginForGeometryUpdates(nsObjectFrame* aPlugin)
struct PluginGeometryClosure {
nsIFrame* mRootFrame;
PRInt32 mRootAPD;
nsIFrame* mChangedSubtree;
nsRect mChangedRect;
nsTHashtable<nsPtrHashKey<nsObjectFrame> > mAffectedPlugins;
@ -2398,7 +2399,9 @@ PluginBoundsEnumerator(nsPtrHashKey<nsObjectFrame>* aEntry, void* userArg)
PluginGeometryClosure* closure = static_cast<PluginGeometryClosure*>(userArg);
nsObjectFrame* f = aEntry->GetKey();
nsRect fBounds = f->GetContentRect() +
f->GetParent()->GetOffsetTo(closure->mRootFrame);
f->GetParent()->GetOffsetToCrossDoc(closure->mRootFrame);
PRInt32 APD = f->PresContext()->AppUnitsPerDevPixel();
fBounds = fBounds.ConvertAppUnitsRoundOut(APD, closure->mRootAPD);
// We're identifying the plugins that may have been affected by changes
// to the frame subtree rooted at aChangedRoot. Any plugin that overlaps
// the overflow area of aChangedRoot could have its clip region affected
@ -2474,9 +2477,13 @@ nsRootPresContext::GetPluginGeometryUpdates(nsIFrame* aChangedSubtree,
PluginGeometryClosure closure;
closure.mRootFrame = mShell->FrameManager()->GetRootFrame();
closure.mRootAPD = closure.mRootFrame->PresContext()->AppUnitsPerDevPixel();
closure.mChangedSubtree = aChangedSubtree;
closure.mChangedRect = aChangedSubtree->GetOverflowRect() +
aChangedSubtree->GetOffsetTo(closure.mRootFrame);
aChangedSubtree->GetOffsetToCrossDoc(closure.mRootFrame);
PRInt32 subtreeAPD = aChangedSubtree->PresContext()->AppUnitsPerDevPixel();
closure.mChangedRect =
closure.mChangedRect.ConvertAppUnitsRoundOut(subtreeAPD, closure.mRootAPD);
closure.mAffectedPlugins.Init();
closure.mOutputConfigurations = aConfigurations;
// Fill in closure.mAffectedPlugins and closure.mAffectedPluginBounds

93
layout/base/nsPresShell.cpp
View File

@ -1293,7 +1293,8 @@ private:
// document's root view for element, first ensuring the element is onscreen
void GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
nsIContent **aTargetToUse,
nsIntPoint& aTargetPt);
nsIntPoint& aTargetPt,
nsIWidget *aRootWidget);
void FireResizeEvent();
static void AsyncResizeEventCallback(nsITimer* aTimer, void* aPresShell);
@ -4289,9 +4290,18 @@ PresShell::ScrollFrameRectIntoView(nsIFrame* aFrame,
rect.IntersectRect(rect, sf->GetScrollPortRect());
}
rect += container->GetPosition();
nsPoint extraOffset(0,0);
container = nsLayoutUtils::GetCrossDocParentFrame(container, &extraOffset);
rect += extraOffset;
nsIFrame* parent = container->GetParent();
if (!parent) {
nsPoint extraOffset(0,0);
parent = nsLayoutUtils::GetCrossDocParentFrame(container, &extraOffset);
if (parent) {
PRInt32 APD = container->PresContext()->AppUnitsPerDevPixel();
PRInt32 parentAPD = parent->PresContext()->AppUnitsPerDevPixel();
rect = rect.ConvertAppUnitsRoundOut(APD, parentAPD);
rect += extraOffset;
}
}
container = parent;
} while (container);
return didScroll;
@ -4302,6 +4312,8 @@ PresShell::GetRectVisibility(nsIFrame* aFrame,
const nsRect &aRect,
nscoord aMinTwips) const
{
NS_ASSERTION(aFrame->PresContext() == GetPresContext(),
"prescontext mismatch?");
nsIFrame* rootFrame = FrameManager()->GetRootFrame();
NS_ASSERTION(rootFrame,
"How can someone have a frame for this presshell when there's no root?");
@ -6824,7 +6836,8 @@ PresShell::AdjustContextMenuKeyEvent(nsMouseEvent* aEvent)
nsCOMPtr<nsIContent> currentPointElement;
GetCurrentItemAndPositionForElement(currentFocus,
getter_AddRefs(currentPointElement),
aEvent->refPoint);
aEvent->refPoint,
aEvent->widget);
if (currentPointElement) {
mCurrentEventContent = currentPointElement;
mCurrentEventFrame = nsnull;
@ -6835,7 +6848,7 @@ PresShell::AdjustContextMenuKeyEvent(nsMouseEvent* aEvent)
return PR_TRUE;
}
// nsEventListenerManager::PrepareToUseCaretPosition
// PresShell::PrepareToUseCaretPosition
//
// This checks to see if we should use the caret position for popup context
// menus. Returns true if the caret position should be used, and the
@ -6918,31 +6931,28 @@ PresShell::PrepareToUseCaretPosition(nsIWidget* aEventWidget, nsIntPoint& aTarge
NS_ENSURE_SUCCESS(rv, PR_FALSE);
}
// get caret position relative to some view (normally the same as the
// event widget view, but this is not guaranteed)
nsPresContext* presContext = GetPresContext();
// get caret position relative to the closest view
nsRect caretCoords;
nsIFrame* caretFrame = caret->GetGeometry(domSelection, &caretCoords);
if (!caretFrame)
return PR_FALSE;
nsPoint widgetOffset;
nsIWidget* widget = caretFrame->GetNearestWidget(widgetOffset);
if (!widget)
nsPoint viewOffset;
nsIView* view = caretFrame->GetClosestView(&viewOffset);
if (!view)
return PR_FALSE;
caretCoords.MoveBy(widgetOffset);
nsIView* caretView = nsIView::GetViewFor(widget);
// in case the view used for caret coordinates was something else, we need
// to bring those coordinates into the space of the widget view
nsIView* widgetView = nsIView::GetViewFor(aEventWidget);
NS_ENSURE_TRUE(widgetView, PR_FALSE);
nsPoint viewToWidget;
widgetView->GetNearestWidget(&viewToWidget);
nsPoint viewDelta = caretView->GetOffsetTo(widgetView) + viewToWidget;
// and then get the caret coords relative to the event widget
if (aEventWidget) {
viewOffset += view->GetOffsetToWidget(aEventWidget);
}
caretCoords.MoveBy(viewOffset);
// caret coordinates are in app units, convert to pixels
nsPresContext* presContext = GetPresContext();
aTargetPt.x = presContext->AppUnitsToDevPixels(viewDelta.x + caretCoords.x + caretCoords.width);
aTargetPt.y = presContext->AppUnitsToDevPixels(viewDelta.y + caretCoords.y + caretCoords.height);
aTargetPt.x =
presContext->AppUnitsToDevPixels(caretCoords.x + caretCoords.width);
aTargetPt.y =
presContext->AppUnitsToDevPixels(caretCoords.y + caretCoords.height);
// make sure rounding doesn't return a pixel which is outside the caret
// (e.g. one line lower)
@ -6954,14 +6964,17 @@ PresShell::PrepareToUseCaretPosition(nsIWidget* aEventWidget, nsIntPoint& aTarge
void
PresShell::GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
nsIContent** aTargetToUse,
nsIntPoint& aTargetPt)
nsIntPoint& aTargetPt,
nsIWidget *aRootWidget)
{
nsCOMPtr<nsIContent> focusedContent(do_QueryInterface(aCurrentEl));
ScrollContentIntoView(focusedContent, NS_PRESSHELL_SCROLL_ANYWHERE,
NS_PRESSHELL_SCROLL_ANYWHERE);
nsPresContext* presContext = GetPresContext();
PRBool istree = PR_FALSE, checkLineHeight = PR_TRUE;
PRInt32 extraPixelsY = 0, extraTreeY = 0;
nscoord extraTreeY = 0;
#ifdef MOZ_XUL
// Set the position to just underneath the current item for multi-select
@ -6993,7 +7006,8 @@ PresShell::GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
treeBox->GetFirstVisibleRow(&firstVisibleRow);
treeBox->GetRowHeight(&rowHeight);
extraPixelsY = (currentIndex - firstVisibleRow + 1) * rowHeight;
extraTreeY += presContext->CSSPixelsToAppUnits(
(currentIndex - firstVisibleRow + 1) * rowHeight);
istree = PR_TRUE;
nsCOMPtr<nsITreeColumns> cols;
@ -7008,7 +7022,7 @@ PresShell::GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
if (colContent) {
nsIFrame* frame = colContent->GetPrimaryFrame();
if (frame) {
extraTreeY = frame->GetSize().height;
extraTreeY += frame->GetSize().height;
}
}
}
@ -7039,14 +7053,19 @@ PresShell::GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
nsIFrame *frame = focusedContent->GetPrimaryFrame();
if (frame) {
NS_ASSERTION(frame->PresContext() == GetPresContext(),
"handling event for focused content that is not in our document?");
nsPoint frameOrigin(0, 0);
// Get the frame's origin within its view
nsIView *view = frame->GetClosestView(&frameOrigin);
NS_ASSERTION(view, "No view for frame");
// View's origin within the view manager tree
frameOrigin += view->GetOffsetTo(nsnull);
// View's origin relative the widget
if (aRootWidget) {
frameOrigin += view->GetOffsetToWidget(aRootWidget);
}
// Start context menu down and to the right from top left of frame
// use the lineheight. This is a good distance to move the context
@ -7063,19 +7082,21 @@ PresShell::GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
nsIScrollableFrame *scrollFrame =
nsLayoutUtils::GetNearestScrollableFrame(frame);
if (scrollFrame) {
nscoord scrollFrameLineHeight =
scrollFrame->GetLineScrollAmount().height;
if (extra > scrollFrameLineHeight) {
extra = scrollFrameLineHeight;
nsSize scrollAmount = scrollFrame->GetLineScrollAmount();
nsIFrame* f = do_QueryFrame(scrollFrame);
PRInt32 APD = presContext->AppUnitsPerDevPixel();
PRInt32 scrollAPD = f->PresContext()->AppUnitsPerDevPixel();
scrollAmount = scrollAmount.ConvertAppUnits(scrollAPD, APD);
if (extra > scrollAmount.height) {
extra = scrollAmount.height;
}
}
}
}
nsPresContext* presContext = GetPresContext();
aTargetPt.x = presContext->AppUnitsToDevPixels(frameOrigin.x);
aTargetPt.y = presContext->AppUnitsToDevPixels(
frameOrigin.y + extra + extraTreeY) + extraPixelsY;
frameOrigin.y + extra + extraTreeY);
}
NS_IF_ADDREF(*aTargetToUse = focusedContent);

10
layout/generic/nsFrame.cpp
View File

@ -3540,8 +3540,8 @@ nsPoint nsIFrame::GetOffsetTo(const nsIFrame* aOther) const
NS_PRECONDITION(aOther,
"Must have frame for destination coordinate system!");
//NS_ASSERTION(PresContext() == aOther->PresContext(),
// "GetOffsetTo called on frames in different documents");
NS_ASSERTION(PresContext() == aOther->PresContext(),
"GetOffsetTo called on frames in different documents");
//XXX sometime in the near future once we are confident that all GetOffsetTo
// callers pass frames that are really in the same doc we can get rid of this
@ -3941,7 +3941,7 @@ nsIFrame::GetTransformMatrix(nsIFrame **aOutAncestor)
{
NS_PRECONDITION(aOutAncestor, "Need a place to put the ancestor!");
/* Whether or not we're transformed, the matrix will be relative to our
/* If we're transformed, the matrix will be relative to our
* cross-doc parent frame.
*/
*aOutAncestor = nsLayoutUtils::GetCrossDocParentFrame(this);
@ -3955,7 +3955,7 @@ nsIFrame::GetTransformMatrix(nsIFrame **aOutAncestor)
* coordinates to our parent.
*/
NS_ASSERTION(*aOutAncestor, "Cannot transform the viewport frame!");
nsPoint delta = GetOffsetTo(*aOutAncestor);
nsPoint delta = GetOffsetToCrossDoc(*aOutAncestor);
PRInt32 scaleFactor = PresContext()->AppUnitsPerDevPixel();
gfxMatrix result =
@ -3994,7 +3994,7 @@ nsIFrame::GetTransformMatrix(nsIFrame **aOutAncestor)
/* Translate from this frame to our ancestor, if it exists. That's the
* entire transform, so we're done.
*/
nsPoint delta = GetOffsetTo(*aOutAncestor);
nsPoint delta = GetOffsetToCrossDoc(*aOutAncestor);
PRInt32 scaleFactor = PresContext()->AppUnitsPerDevPixel();
return gfxMatrix().Translate
(gfxPoint(NSAppUnitsToFloatPixels(delta.x, scaleFactor),

2
layout/generic/nsObjectFrame.cpp
View File

@ -1235,7 +1235,7 @@ nsObjectFrame::ComputeWidgetGeometry(const nsRegion& aRegion,
PRInt32 appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
nsIFrame* rootFrame = rootPC->PresShell()->FrameManager()->GetRootFrame();
nsRect bounds = GetContentRect() + GetParent()->GetOffsetTo(rootFrame);
nsRect bounds = GetContentRect() + GetParent()->GetOffsetToCrossDoc(rootFrame);
configuration->mBounds = bounds.ToNearestPixels(appUnitsPerDevPixel);
// This should produce basically the same rectangle (but not relative

7
layout/generic/nsSelection.cpp
View File

@ -462,6 +462,7 @@ public:
if (!frame.IsAlive())
return NS_OK;
NS_ASSERTION(frame->PresContext() == mPresContext, "document mismatch?");
nsPoint pt = mPoint -
frame->GetOffsetTo(mPresContext->PresShell()->FrameManager()->GetRootFrame());
mSelection->DoAutoScroll(frame, pt);
@ -4663,7 +4664,9 @@ nsTypedSelection::DoAutoScroll(nsIFrame *aFrame, nsPoint& aPoint)
if (!rootPC)
return NS_OK;
nsIFrame* rootmostFrame = rootPC->PresShell()->FrameManager()->GetRootFrame();
nsPoint globalPoint = aPoint + aFrame->GetOffsetTo(rootmostFrame);
// Get the point relative to the root most frame because the scroll we are
// about to do will change the coordinates of aFrame.
nsPoint globalPoint = aPoint + aFrame->GetOffsetToCrossDoc(rootmostFrame);
PRBool didScroll = presContext->PresShell()->
ScrollFrameRectIntoView(aFrame, nsRect(aPoint, nsSize(1,1)),
@ -4677,7 +4680,7 @@ nsTypedSelection::DoAutoScroll(nsIFrame *aFrame, nsPoint& aPoint)
if (didScroll && mAutoScrollTimer)
{
nsPoint presContextPoint = globalPoint -
presContext->PresShell()->FrameManager()->GetRootFrame()->GetOffsetTo(rootmostFrame);
presContext->PresShell()->FrameManager()->GetRootFrame()->GetOffsetToCrossDoc(rootmostFrame);
mAutoScrollTimer->Start(presContext, presContextPoint);
}

5
layout/generic/nsViewportFrame.cpp
View File

@ -357,7 +357,10 @@ ViewportFrame::InvalidateInternal(const nsRect& aDamageRect,
nsIFrame* parent = nsLayoutUtils::GetCrossDocParentFrame(this);
if (parent) {
nsPoint pt = GetOffsetTo(parent);
nsPoint pt = -parent->GetOffsetToCrossDoc(this);
PRInt32 ourAPD = PresContext()->AppUnitsPerDevPixel();
PRInt32 parentAPD = parent->PresContext()->AppUnitsPerDevPixel();
r = r.ConvertAppUnitsRoundOut(ourAPD, parentAPD);
parent->InvalidateInternal(r, pt.x, pt.y, this,
aFlags | INVALIDATE_CROSS_DOC);
return;

3
layout/printing/nsPrintEngine.cpp
View File

@ -1898,6 +1898,9 @@ nsPrintEngine::ReflowPrintObject(nsPrintObject * aPO)
return NS_OK;
}
//XXX If printing supported printing document hierarchies with non-constant
// zoom this would be wrong as we use the same mPrt->mPrintDC for all
// subdocuments.
adjSize = frame->GetContentRect().Size();
documentIsTopLevel = PR_FALSE;
// presshell exists because parent is printable

2
layout/xul/base/public/nsXULPopupManager.h
View File

@ -729,7 +729,7 @@ protected:
nsCOMPtr<nsIDOMNode> mRangeParent;
PRInt32 mRangeOffset;
// Device pixels relative to the showing popup's presshell's
// GetViewManager()->GetRootWidget().
// root prescontext's root frame.
nsIntPoint mCachedMousePoint;
// set to the currently active menu bar, if any

13
layout/xul/base/src/nsXULPopupManager.cpp
View File

@ -345,9 +345,10 @@ nsXULPopupManager::SetTriggerEvent(nsIDOMEvent* aEvent, nsIContent* aPopup)
nsIDocument* doc = aPopup->GetCurrentDoc();
if (doc) {
nsIPresShell* presShell = doc->GetShell();
if (presShell && presShell->GetPresContext()) {
nsPresContext* presContext;
if (presShell && (presContext = presShell->GetPresContext())) {
nsPresContext* rootDocPresContext =
presShell->GetPresContext()->GetRootPresContext();
presContext->GetRootPresContext();
if (!rootDocPresContext)
return;
nsIFrame* rootDocumentRootFrame = rootDocPresContext->
@ -362,12 +363,12 @@ nsXULPopupManager::SetTriggerEvent(nsIDOMEvent* aEvent, nsIContent* aPopup)
mouseEvent->GetClientY(&clientPt.y);
// XXX this doesn't handle IFRAMEs in transforms
nsPoint thisDocToRootDocOffset =
presShell->FrameManager()->GetRootFrame()->GetOffsetTo(rootDocumentRootFrame);
nsPoint thisDocToRootDocOffset = presShell->FrameManager()->
GetRootFrame()->GetOffsetToCrossDoc(rootDocumentRootFrame);
// convert to device pixels
mCachedMousePoint.x = rootDocPresContext->AppUnitsToDevPixels(
mCachedMousePoint.x = presContext->AppUnitsToDevPixels(
nsPresContext::CSSPixelsToAppUnits(clientPt.x) + thisDocToRootDocOffset.x);
mCachedMousePoint.y = rootDocPresContext->AppUnitsToDevPixels(
mCachedMousePoint.y = presContext->AppUnitsToDevPixels(
nsPresContext::CSSPixelsToAppUnits(clientPt.y) + thisDocToRootDocOffset.y);
}
else if (rootDocumentRootFrame) {