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haikuwebkit/LayoutTests/compositing
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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
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animation [ Mac WK2 ] compositing/animation/keyframe-order.html is a flakey image failure 2021-04-09 09:11:27 +00:00
backface-visibility
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background-color
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backgrounds
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backing Simplify transform blending for simple cases 2020-12-14 20:55:27 +00:00
canvas
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clipping Scrollbars are not clipped to layer bounds in RenderLayerBacking 2021-06-15 18:12:34 +00:00
color-matching
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columns Make GraphicsLayer::dumpProperties dump m_offsetFromRenderer 2017-12-14 09:39:59 +00:00
contents-format
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contents-opaque Translucent gradient rendering bug due to will-change transform 2019-05-11 22:05:37 +00:00
contents-scale
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culling
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filters
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framesets
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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 Make GraphicsLayer::dumpProperties dump m_offsetFromRenderer 2017-12-14 09:39:59 +00:00
ios
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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
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overflow REGRESSION (Safari 14): Submenus on https://codelearn.cat don't show 2021-06-22 18:33:24 +00:00
overlap-blending
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patterns
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plugins
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reflections
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repaint
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resources
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rtl Scrollbars are not clipped to layer bounds in RenderLayerBacking 2021-06-15 18:12:34 +00:00
scaling
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scrolling Scrollbar hidden when scroller has a negative z-index child 2021-07-08 20:29:32 +00:00
shadows
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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
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tiling Scrollbars are not clipped to layer bounds in RenderLayerBacking 2021-06-15 18:12:34 +00:00
transforms
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transitions [Web Animations] Turn Web Animations with CSS integration on 2018-09-27 09:49:52 +00:00
updates
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video Separated models don't get opacity set on them at all 2021-04-20 23:21:06 +00:00
visibility
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visible-rect Separated models don't get opacity set on them at all 2021-04-20 23:21:06 +00:00
webgl
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z-order
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absolute-inside-out-of-view-fixed-expected.txt
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absolute-inside-out-of-view-fixed.html
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absolute-position-changed-in-composited-layer-expected.png
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absolute-position-changed-in-composited-layer-expected.txt
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absolute-position-changed-in-composited-layer.html
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absolute-position-changed-with-composited-parent-layer-expected.png
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absolute-position-changed-with-composited-parent-layer-expected.txt
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absolute-position-changed-with-composited-parent-layer.html
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accelerated-layers-after-back-expected.txt
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accelerated-layers-after-back.html
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ancestor-compositing-layer-is-on-subpixel-position-expected.html
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ancestor-compositing-layer-is-on-subpixel-position.html
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assert-on-will-change-transform-with-composited-descendant-expected.txt
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assert-on-will-change-transform-with-composited-descendant.html
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backing-store-attachment-1-expected.txt
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backing-store-attachment-1.html
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bounds-in-flipped-writing-mode-expected.txt
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bounds-in-flipped-writing-mode.html
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checkerboard-expected.png
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checkerboard-expected.txt
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checkerboard.html
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child-layer-with-subpixel-gap-needs-repaint-when-parent-moves-expected.html
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child-layer-with-subpixel-gap-needs-repaint-when-parent-moves.html
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clip-change-expected.txt
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clip-change.html
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clip-child-by-non-stacking-ancestor-expected.txt
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clip-child-by-non-stacking-ancestor.html
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cliprect-and-position-change-on-compositing-layer-expected.html
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cliprect-and-position-change-on-compositing-layer.html
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composited-negative-zindex-child-expected.txt
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composited-negative-zindex-child.html
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composited-parent-clipping-layer-on-subpixel-position-expected.html
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composited-parent-clipping-layer-on-subpixel-position.html
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compositing-visible-descendant.html
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debug-borders-dynamic-expected.html
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debug-borders-dynamic.html
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direct-image-compositing.html
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document-background-color-expected.html
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document-background-color.html
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fixed-image-loading-expected.txt
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fixed-image-loading.html
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fixed-position-changed-in-composited-layer-expected.png
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fixed-position-changed-in-composited-layer-expected.txt
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fixed-position-changed-in-composited-layer.html
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fixed-position-changed-within-composited-parent-layer-expected.png
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fixed-position-changed-within-composited-parent-layer-expected.txt
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fixed-position-changed-within-composited-parent-layer.html
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fixed-position-scroll-offset-history-restore-expected.txt
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fixed-position-scroll-offset-history-restore.html
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fixed-positioned-pseudo-content-no-compositing-expected.txt
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fixed-positioned-pseudo-content-no-compositing.html
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fixed-with-clip-stability-expected.txt
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fixed-with-clip-stability.html
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fixed-with-fixed-layout-expected.txt
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fixed-with-fixed-layout.html
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fixed-with-main-thread-scrolling-expected.html
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fixed-with-main-thread-scrolling.html
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flat-with-transformed-child-expected.txt
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flat-with-transformed-child.html
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generated-content.html
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hidpi-absolute-subpixel-positioned-transformed-elements-expected.html
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hidpi-absolute-subpixel-positioned-transformed-elements.html
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hidpi-ancestor-subpixel-clipping-expected.html
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hidpi-ancestor-subpixel-clipping.html
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hidpi-box-positioned-off-by-one-when-non-compositing-transform-is-present-expected.html
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hidpi-box-positioned-off-by-one-when-non-compositing-transform-is-present.html
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hidpi-composited-container-and-graphics-layer-gap-changes-expected.html
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hidpi-composited-container-and-graphics-layer-gap-changes.html
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hidpi-compositing-layer-with-subpixel-offset-accumulation-clipping-expected.html
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hidpi-compositing-layer-with-subpixel-offset-accumulation-clipping.html
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hidpi-compositing-layer-with-tile-layers-on-subpixel-position-expected.html
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hidpi-compositing-layer-with-tile-layers-on-subpixel-position.html
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hidpi-compositing-layer-with-zero-sized-container-expected.html
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hidpi-compositing-layer-with-zero-sized-container.html
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hidpi-compositing-vs-non-compositing-check-on-testing-framework-expected.html
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hidpi-compositing-vs-non-compositing-check-on-testing-framework.html
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hidpi-negative-composited-bounds-on-device-pixel-expected.html
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hidpi-negative-composited-bounds-on-device-pixel.html
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hidpi-nested-compositing-layers-with-subpixel-accumulation-expected.html
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hidpi-nested-compositing-layers-with-subpixel-accumulation.html
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hidpi-non-simple-compositing-layer-with-fractional-size-and-background-expected.html
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hidpi-non-simple-compositing-layer-with-fractional-size-and-background.html
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hidpi-sibling-composited-content-offset-expected.html
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hidpi-sibling-composited-content-offset.html
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hidpi-simple-container-layer-on-device-pixel-expected.html
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hidpi-simple-container-layer-on-device-pixel.html
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hidpi-subpixel-transform-origin-expected.html
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hidpi-subpixel-transform-origin.html Subpixel rendering: Cleanup RenderLayerBacking::updateGeometry. 2016-08-17 03:18:21 +00:00
hidpi-transform-with-render-layer-on-fractional-pixel-value-expected.html
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hidpi-transform-with-render-layer-on-fractional-pixel-value.html
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hidpi-viewport-clipping-on-composited-content-expected.html
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hidpi-viewport-clipping-on-composited-content.html
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layers-inside-overflow-scroll.html
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media-controls-bar-appearance-big-expected.txt
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media-controls-bar-appearance-big.html
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media-controls-bar-appearance-expected.txt
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media-controls-bar-appearance.html
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nested-direct-image-compositing-expected.png
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nested-direct-image-compositing-expected.txt
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nested-direct-image-compositing.html
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no-compositing-when-fulll-screen-is-present-expected.txt
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no-compositing-when-fulll-screen-is-present.html
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overflow-trumps-transform-style-expected.txt
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overflow-trumps-transform-style.html
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page-cache-back-crash-expected.txt REGRESSION(r209865): Crash when navigating back to some pages with compositing layers. 2016-12-24 00:23:37 +00:00
page-cache-back-crash.html
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parent-clipping-layer-on-subpixel-position-expected.html
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parent-clipping-layer-on-subpixel-position.html
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preserve-3d-toggle-expected.png
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preserve-3d-toggle-expected.txt
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preserve-3d-toggle.html
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repaint-container-assertion-when-toggling-compositing-expected.txt ASSERT repaintContainer->hasLayer() in WebCore::RenderObject::repaintUsingContainer 2015-02-07 04:35:58 +00:00
repaint-container-assertion-when-toggling-compositing.html
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scroll-painted-composited-content-expected.txt
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scroll-painted-composited-content.html
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scrollbar-painting-expected.png
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scrollbar-painting-expected.txt
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scrollbar-painting.html
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self-painting-layers.html
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self-painting-layers2-expected.txt
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self-painting-layers2.html
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show-composited-iframe-on-back-button-expected.html
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show-composited-iframe-on-back-button.html
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sibling-layer-does-not-get-composited-overflow-hidden-case-expected.html
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sibling-layer-does-not-get-composited-overflow-hidden-case.html
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sibling-layer-does-not-get-composited-transform-case-expected.html
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sibling-layer-does-not-get-composited-transform-case.html
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sibling-positioning.html
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sub-layer-focus-ring-expected.html
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sub-layer-focus-ring.html
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text-on-large-layer.html
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text-on-scaled-layer-expected.html
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text-on-scaled-layer.html
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text-on-scaled-surface-expected.html
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text-on-scaled-surface.html
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tile-cache-must-flatten-expected.html
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tile-cache-must-flatten.html
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tiled-layers-hidpi-expected.txt
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tiled-layers-hidpi.html
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toggle-compositing-expected.txt
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toggle-compositing.html
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video-page-visibility-expected.txt
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video-page-visibility.html
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