wuggy/Dactyloidae
wuggy/Dactyloidae
1
0
Fork 0
mirror of https://repo.dactyloidae.xyz/Dactyloidae/UXP.git synced 2026-09-07 00:08:39 +09:00
Code Issues Projects Releases Packages Wiki Activity

Issue #2135 - Bug 1430301: Implement ShadowRoot.elementFromPoint/elementsFromPoint

Browse source
This commit is contained in:
FranklinDM 2023-03-03 21:48:01 +08:00 • committed by roytam1
commit e64aeea52d
7 changed files with 154 additions and 149 deletions
Download patch file Download diff file Expand all files Collapse all files

102
dom/base/nsDocument.cpp
View file

@ -3120,106 +3120,6 @@ nsDocument::ElementFromPoint(float aX, float aY, nsIDOMElement** aReturn)
return NS_OK;
}
Element*
nsIDocument::ElementFromPoint(float aX, float aY)
{
return ElementFromPointHelper(aX, aY, false, true);
}
void
nsIDocument::ElementsFromPoint(float aX, float aY,
nsTArray<RefPtr<Element>>& aElements)
{
ElementsFromPointHelper(aX, aY, nsIDocument::FLUSH_LAYOUT, aElements);
}
Element*
nsDocument::ElementFromPointHelper(float aX, float aY,
bool aIgnoreRootScrollFrame,
bool aFlushLayout)
{
AutoTArray<RefPtr<Element>, 1> elementArray;
ElementsFromPointHelper(aX, aY,
((aIgnoreRootScrollFrame ? nsIDocument::IGNORE_ROOT_SCROLL_FRAME : 0) |
(aFlushLayout ? nsIDocument::FLUSH_LAYOUT : 0) |
nsIDocument::IS_ELEMENT_FROM_POINT),
elementArray);
if (elementArray.IsEmpty()) {
return nullptr;
}
return elementArray[0];
}
void
nsDocument::ElementsFromPointHelper(float aX, float aY,
uint32_t aFlags,
nsTArray<RefPtr<mozilla::dom::Element>>& aElements)
{
// As per the the spec, we return null if either coord is negative
if (!(aFlags & nsIDocument::IGNORE_ROOT_SCROLL_FRAME) && (aX < 0 || aY < 0)) {
return;
}
nscoord x = nsPresContext::CSSPixelsToAppUnits(aX);
nscoord y = nsPresContext::CSSPixelsToAppUnits(aY);
nsPoint pt(x, y);
// Make sure the layout information we get is up-to-date, and
// ensure we get a root frame (for everything but XUL)
if (aFlags & nsIDocument::FLUSH_LAYOUT) {
FlushPendingNotifications(Flush_Layout);
}
nsIPresShell *ps = GetShell();
if (!ps) {
return;
}
nsIFrame *rootFrame = ps->GetRootFrame();
// XUL docs, unlike HTML, have no frame tree until everything's done loading
if (!rootFrame) {
return; // return null to premature XUL callers as a reminder to wait
}
nsTArray<nsIFrame*> outFrames;
// Emulate what GetFrameAtPoint does, since we want all the frames under our
// point.
nsLayoutUtils::GetFramesForArea(rootFrame, nsRect(pt, nsSize(1, 1)), outFrames,
nsLayoutUtils::IGNORE_PAINT_SUPPRESSION | nsLayoutUtils::IGNORE_CROSS_DOC |
((aFlags & nsIDocument::IGNORE_ROOT_SCROLL_FRAME) ? nsLayoutUtils::IGNORE_ROOT_SCROLL_FRAME : 0));
// Dunno when this would ever happen, as we should at least have a root frame under us?
if (outFrames.IsEmpty()) {
return;
}
// Used to filter out repeated elements in sequence.
nsIContent* lastAdded = nullptr;
for (uint32_t i = 0; i < outFrames.Length(); i++) {
nsIContent* node = GetContentInThisDocument(outFrames[i]);
if (!node || !node->IsElement()) {
// If this helper is called via ElementsFromPoint, we need to make sure
// our frame is an element. Otherwise return whatever the top frame is
// even if it isn't the top-painted element.
if (!(aFlags & nsIDocument::IS_ELEMENT_FROM_POINT)) {
continue;
}
node = node->GetParent();
}
if (node && node != lastAdded) {
aElements.AppendElement(node->AsElement());
lastAdded = node;
// If this helper is called via ElementFromPoint, just return the first
// element we find.
if (aFlags & nsIDocument::IS_ELEMENT_FROM_POINT) {
return;
}
}
}
}
nsresult
nsDocument::NodesFromRectHelper(float aX, float aY,
float aTopSize, float aRightSize,
@ -8392,7 +8292,7 @@ nsDocument::DoUnblockOnload()
}
nsIContent*
nsDocument::GetContentInThisDocument(nsIFrame* aFrame) const
nsIDocument::GetContentInThisDocument(nsIFrame* aFrame) const
{
for (nsIFrame* f = aFrame; f;
f = nsLayoutUtils::GetParentOrPlaceholderForCrossDoc(f)) {