wuggy/Dactyloidae
wuggy/Dactyloidae
1
0
Fork 0
mirror of https://repo.dactyloidae.xyz/Dactyloidae/UXP.git synced 2026-09-06 07:48:38 +09:00
Code Issues Projects Releases Packages Wiki Activity

Issue #2499 - Part 3: Add CSS clip overflow support with serialization fixes

Browse source
This commit is contained in:
MeladJM 2025-07-08 05:46:54 +08:00 • committed by roytam1
commit 5e8e1208e7
40 changed files with 144 additions and 97 deletions
Download patch file Download diff file Expand all files Collapse all files

24
layout/generic/nsFrame.cpp
View file

@ -1934,14 +1934,15 @@ ApplyOverflowClipping(nsDisplayListBuilder* aBuilder,
const nsStyleDisplay* aDisp,
DisplayListClipState::AutoClipMultiple& aClipState)
{
// Only -moz-hidden-unscrollable is handled here (and 'hidden' for table
// Only clip is handled here (and 'hidden' for table
// frames, and any non-visible value for blocks in a paginated context).
// We allow -moz-hidden-unscrollable to apply to any kind of frame. This
// We allow clip to apply to any kind of frame. This
// is required by comboboxes which make their display text (an inline frame)
// have clipping.
if (!nsFrame::ShouldApplyOverflowClipping(aFrame, aDisp)) {
return;
}
nsRect clipRect;
bool haveRadii = false;
nscoord radii[8];
@ -1955,6 +1956,23 @@ ApplyOverflowClipping(nsDisplayListBuilder* aBuilder,
aBuilder->ToReferenceFrame(aFrame);
// XXX border-radius
}
// Support per-axis clipping: If only one axis has 'clip' or 'hidden' value,
// only clip that axis by extending the clip rect to infinity on the other axis
bool clipX = (aDisp->mOverflowX == NS_STYLE_OVERFLOW_CLIP || aDisp->mOverflowX == NS_STYLE_OVERFLOW_HIDDEN);
bool clipY = (aDisp->mOverflowY == NS_STYLE_OVERFLOW_CLIP || aDisp->mOverflowY == NS_STYLE_OVERFLOW_HIDDEN);
if (clipX && !clipY) {
// Only clip X axis - extend Y to infinity
clipRect.y = nscoord_MIN / 2;
clipRect.height = nscoord_MAX;
} else if (clipY && !clipX) {
// Only clip Y axis - extend X to infinity
clipRect.x = nscoord_MIN / 2;
clipRect.width = nscoord_MAX;
}
// If both axes are clip/hidden, use the normal rect (no modification needed)
aClipState.ClipContainingBlockDescendantsExtra(clipRect, haveRadii ? radii : nullptr);
}
@ -2826,7 +2844,7 @@ nsIFrame::BuildDisplayListForChild(nsDisplayListBuilder* aBuilder,
clipState.SetScrollClipForContainingBlockDescendants(aBuilder, nullptr);
}
// Setup clipping for the parent's overflow:-moz-hidden-unscrollable,
// Setup clipping for the parent's overflow:clip,
// or overflow:hidden on elements that don't support scrolling (and therefore
// don't create nsHTML/XULScrollFrame). This clipping needs to not clip
// anything directly rendered by the parent, only the rendering of its