Simon Fraser 0dfb19cdf2 Scrollbar hidden when scroller has a negative z-index child ... https://bugs.webkit.org/show_bug.cgi?id=227545 Reviewed by Alan Bujtas. Source/WebCore: The code to ensure that overflow:scroll scrollbars appeared on top of composited descendant layers had incorrect behavior if the only descendant had negative z-index; it would move the overflow controls container layer to be after that descendant, and thus behind foreground content. Fix by inserting the overflow controls container layer in front of the frontmost of the descendant and the scroller itself. Test: compositing/scrolling/async-overflow-scrolling/negative-z-in-scroller-hidden-scrollbar.html * rendering/RenderLayerCompositor.cpp: (WebCore::RenderLayerCompositor::adjustOverflowScrollbarContainerLayers): LayoutTests: * compositing/scrolling/async-overflow-scrolling/layer-for-negative-z-in-scroller-expected.txt: Rebaseline * compositing/scrolling/async-overflow-scrolling/negative-z-in-scroller-hidden-scrollbar-expected.html: Added. * compositing/scrolling/async-overflow-scrolling/negative-z-in-scroller-hidden-scrollbar.html: Added. Canonical link: https://commits.webkit.org/239524@main git-svn-id: https://svn.webkit.org/repository/webkit/trunk@279748 268f45cc-cd09-0410-ab3c-d52691b4dbfc		2021-07-08 20:29:32 +00:00
..
animation	[ Mac WK2 ] compositing/animation/keyframe-order.html is a flakey image failure	2021-04-09 09:11:27 +00:00
backface-visibility	…
background-color	…
backgrounds	…
backing	Simplify transform blending for simple cases	2020-12-14 20:55:27 +00:00
canvas	[LFC][Integration] Enable inline replaced support	2020-11-12 20:25:28 +00:00
clipping	Scrollbars are not clipped to layer bounds in RenderLayerBacking	2021-06-15 18:12:34 +00:00
color-matching	…
columns	…
contents-format	Remove trailing spaces from expected.txt files (excluding WPT for now since that contains too many)	2020-09-27 02:15:19 +00:00
contents-opaque	…
contents-scale	Safari 14 on 2x display renders NYS DMV page as blurry	2021-01-12 02:52:17 +00:00
culling	…
filters	[TextureMapperGL] The invert filter wrongly inverts pre-multiplied alpha color	2020-11-19 19:43:15 +00:00
framesets	…
geometry	play.google.com: App preview images are clipped	2021-01-09 13:14:18 +00:00
iframes	REGRESSION: animated iframe painted blank	2021-01-06 03:55:01 +00:00
images	…
ios	Remove experimental: and internal: prefixes from test header commands	2020-11-04 15:56:26 +00:00
layer-creation	Scrollbars are not clipped to layer bounds in RenderLayerBacking	2021-06-15 18:12:34 +00:00
masks	[TextureMapper] REGRESION(r269570): mask layer doesn't clip descendent layers	2020-12-11 20:06:50 +00:00
objects	…
overflow	REGRESSION (Safari 14): Submenus on https://codelearn.cat don't show	2021-06-22 18:33:24 +00:00
overlap-blending	…
patterns	…
plugins	Remove trailing spaces from expected.txt files (excluding WPT for now since that contains too many)	2020-09-27 02:15:19 +00:00
reflections	TextureMapperLayer::computeOverlapRegions: Accumulate nested replica transform matrices recursively	2020-11-08 19:51:53 +00:00
repaint	REGRESSION (r269824): YouTube media control bar sometimes flickers	2020-11-17 08:28:31 +00:00
resources	Fix compositing/video/poster.html test by making blending image opque to deal with flakey failures.	2020-01-29 08:58:38 +00:00
rtl	Scrollbars are not clipped to layer bounds in RenderLayerBacking	2021-06-15 18:12:34 +00:00
scaling	…
scrolling	Scrollbar hidden when scroller has a negative z-index child	2021-07-08 20:29:32 +00:00
shadows	…
shared-backing	REGRESSION (r262237) Safari 14.x shows graphics artifacts when scrolling, using drop-down menus or just moving the mouse	2021-07-07 03:36:45 +00:00
style-change	Twitter Photo gallery incorrectly rendered after opening another modal	2020-10-22 23:15:41 +00:00
tiling	Scrollbars are not clipped to layer bounds in RenderLayerBacking	2021-06-15 18:12:34 +00:00
transforms	Remove experimental: and internal: prefixes from test header commands	2020-11-04 15:56:26 +00:00
transitions	…
updates	…
video	Separated models don't get opacity set on them at all	2021-04-20 23:21:06 +00:00
visibility	Remove trailing spaces from expected.txt files (excluding WPT for now since that contains too many)	2020-09-27 02:15:19 +00:00
visible-rect	Separated models don't get opacity set on them at all	2021-04-20 23:21:06 +00:00
webgl	…
z-order	[BigSur arm64] compositing/z-order/rebuild-sibling-of-layer-with-foreground-layer.html is a flakey image failure	2021-03-16 22:26:57 +00:00
absolute-inside-out-of-view-fixed-expected.txt	…
absolute-inside-out-of-view-fixed.html	…
absolute-position-changed-in-composited-layer-expected.png	…
absolute-position-changed-in-composited-layer-expected.txt	…
absolute-position-changed-in-composited-layer.html	…
absolute-position-changed-with-composited-parent-layer-expected.png	…
absolute-position-changed-with-composited-parent-layer-expected.txt	…
absolute-position-changed-with-composited-parent-layer.html	…
accelerated-layers-after-back-expected.txt	…
accelerated-layers-after-back.html	[Testing] Rename test header commands to match names in WebPreferences*.yaml	2020-10-13 17:16:15 +00:00
ancestor-compositing-layer-is-on-subpixel-position-expected.html	…
ancestor-compositing-layer-is-on-subpixel-position.html	…
assert-on-will-change-transform-with-composited-descendant-expected.txt	…
assert-on-will-change-transform-with-composited-descendant.html	…
backing-store-attachment-1-expected.txt	…
backing-store-attachment-1.html	…
bounds-in-flipped-writing-mode-expected.txt	…
bounds-in-flipped-writing-mode.html	…
checkerboard-expected.png	…
checkerboard-expected.txt	…
checkerboard.html	…
child-layer-with-subpixel-gap-needs-repaint-when-parent-moves-expected.html	…
child-layer-with-subpixel-gap-needs-repaint-when-parent-moves.html	…
clip-change-expected.txt	…
clip-change.html	…
clip-child-by-non-stacking-ancestor-expected.txt	…
clip-child-by-non-stacking-ancestor.html	…
cliprect-and-position-change-on-compositing-layer-expected.html	…
cliprect-and-position-change-on-compositing-layer.html	…
composited-negative-zindex-child-expected.txt	…
composited-negative-zindex-child.html	…
composited-parent-clipping-layer-on-subpixel-position-expected.html	…
composited-parent-clipping-layer-on-subpixel-position.html	…
compositing-visible-descendant.html	…
debug-borders-dynamic-expected.html	…
debug-borders-dynamic.html	…
direct-image-compositing.html	…
document-background-color-expected.html	…
document-background-color.html	…
fixed-image-loading-expected.txt	…
fixed-image-loading.html	…
fixed-position-changed-in-composited-layer-expected.png	…
fixed-position-changed-in-composited-layer-expected.txt	…
fixed-position-changed-in-composited-layer.html	…
fixed-position-changed-within-composited-parent-layer-expected.png	…
fixed-position-changed-within-composited-parent-layer-expected.txt	…
fixed-position-changed-within-composited-parent-layer.html	…
fixed-position-scroll-offset-history-restore-expected.txt	…
fixed-position-scroll-offset-history-restore.html	…
fixed-positioned-pseudo-content-no-compositing-expected.txt	…
fixed-positioned-pseudo-content-no-compositing.html	…
fixed-with-clip-stability-expected.txt	msn.com: Header flickers when scrolling articles	2020-04-28 16:05:36 +00:00
fixed-with-clip-stability.html	msn.com: Header flickers when scrolling articles	2020-04-28 16:05:36 +00:00
fixed-with-fixed-layout-expected.txt	…
fixed-with-fixed-layout.html	…
fixed-with-main-thread-scrolling-expected.html	…
fixed-with-main-thread-scrolling.html	…
flat-with-transformed-child-expected.txt	…
flat-with-transformed-child.html	…
generated-content.html	…
hidpi-absolute-subpixel-positioned-transformed-elements-expected.html	…
hidpi-absolute-subpixel-positioned-transformed-elements.html	…
hidpi-ancestor-subpixel-clipping-expected.html	…
hidpi-ancestor-subpixel-clipping.html	…
hidpi-box-positioned-off-by-one-when-non-compositing-transform-is-present-expected.html	…
hidpi-box-positioned-off-by-one-when-non-compositing-transform-is-present.html	…
hidpi-composited-container-and-graphics-layer-gap-changes-expected.html	…
hidpi-composited-container-and-graphics-layer-gap-changes.html	…
hidpi-compositing-layer-with-subpixel-offset-accumulation-clipping-expected.html	…
hidpi-compositing-layer-with-subpixel-offset-accumulation-clipping.html	…
hidpi-compositing-layer-with-tile-layers-on-subpixel-position-expected.html	Content sometimes missing in nested scrollers with border-radius	2020-06-26 20:16:33 +00:00
hidpi-compositing-layer-with-tile-layers-on-subpixel-position.html	Content sometimes missing in nested scrollers with border-radius	2020-06-26 20:16:33 +00:00
hidpi-compositing-layer-with-zero-sized-container-expected.html	…
hidpi-compositing-layer-with-zero-sized-container.html	…
hidpi-compositing-vs-non-compositing-check-on-testing-framework-expected.html	…
hidpi-compositing-vs-non-compositing-check-on-testing-framework.html	…
hidpi-negative-composited-bounds-on-device-pixel-expected.html	…
hidpi-negative-composited-bounds-on-device-pixel.html	…
hidpi-nested-compositing-layers-with-subpixel-accumulation-expected.html	…
hidpi-nested-compositing-layers-with-subpixel-accumulation.html	…
hidpi-non-simple-compositing-layer-with-fractional-size-and-background-expected.html	…
hidpi-non-simple-compositing-layer-with-fractional-size-and-background.html	…
hidpi-sibling-composited-content-offset-expected.html	…
hidpi-sibling-composited-content-offset.html	…
hidpi-simple-container-layer-on-device-pixel-expected.html	…
hidpi-simple-container-layer-on-device-pixel.html	…
hidpi-subpixel-transform-origin-expected.html	…
hidpi-subpixel-transform-origin.html	…
hidpi-transform-with-render-layer-on-fractional-pixel-value-expected.html	…
hidpi-transform-with-render-layer-on-fractional-pixel-value.html	…
hidpi-viewport-clipping-on-composited-content-expected.html	…
hidpi-viewport-clipping-on-composited-content.html	…
layers-inside-overflow-scroll.html	…
media-controls-bar-appearance-big-expected.txt	…
media-controls-bar-appearance-big.html	…
media-controls-bar-appearance-expected.txt	…
media-controls-bar-appearance.html	…
nested-direct-image-compositing-expected.png	…
nested-direct-image-compositing-expected.txt	…
nested-direct-image-compositing.html	…
no-compositing-when-fulll-screen-is-present-expected.txt	…
no-compositing-when-fulll-screen-is-present.html	…
overflow-trumps-transform-style-expected.txt	…
overflow-trumps-transform-style.html	…
page-cache-back-crash-expected.txt	…
page-cache-back-crash.html	[Testing] Rename test header commands to match names in WebPreferences*.yaml	2020-10-13 17:16:15 +00:00
parent-clipping-layer-on-subpixel-position-expected.html	Images on www.fitstylelife.com jiggle on hover.	2015-05-15 05:09:46 +00:00
parent-clipping-layer-on-subpixel-position.html	…
preserve-3d-toggle-expected.png	…
preserve-3d-toggle-expected.txt	…
preserve-3d-toggle.html	…
repaint-container-assertion-when-toggling-compositing-expected.txt	…
repaint-container-assertion-when-toggling-compositing.html	…
scroll-painted-composited-content-expected.txt	…
scroll-painted-composited-content.html	…
scrollbar-painting-expected.png	…
scrollbar-painting-expected.txt	…
scrollbar-painting.html	…
self-painting-layers.html	…
self-painting-layers2-expected.txt	…
self-painting-layers2.html	…
show-composited-iframe-on-back-button-expected.html	…
show-composited-iframe-on-back-button.html	[Testing] Rename test header commands to match names in WebPreferences*.yaml	2020-10-13 17:16:15 +00:00
sibling-layer-does-not-get-composited-overflow-hidden-case-expected.html	…
sibling-layer-does-not-get-composited-overflow-hidden-case.html	…
sibling-layer-does-not-get-composited-transform-case-expected.html	…
sibling-layer-does-not-get-composited-transform-case.html	…
sibling-positioning.html	…
sub-layer-focus-ring-expected.html	…
sub-layer-focus-ring.html	…
text-on-large-layer.html	…
text-on-scaled-layer-expected.html	…
text-on-scaled-layer.html	…
text-on-scaled-surface-expected.html	…
text-on-scaled-surface.html	…
tile-cache-must-flatten-expected.html	…
tile-cache-must-flatten.html	…
tiled-layers-hidpi-expected.txt	…
tiled-layers-hidpi.html	…
toggle-compositing-expected.txt	…
toggle-compositing.html	…
video-page-visibility-expected.txt	…
video-page-visibility.html	…