[X2Go-Commits] [pale-moon] 123/294: Handle the special case of a flex frame being the absolute containing block correctly from the CSS align code
git-admin at x2go.org
git-admin at x2go.org
Sat Apr 27 08:57:58 CEST 2019
This is an automated email from the git hooks/post-receive script.
x2go pushed a commit to branch upstream/28.5.0
in repository pale-moon.
commit c427cf64a8c13b13ce39fecf9db71672df622038
Author: JustOff <Off.Just.Off at gmail.com>
Date: Thu Mar 14 19:40:42 2019 +0200
Handle the special case of a flex frame being the absolute containing block correctly from the CSS align code
---
layout/generic/nsAbsoluteContainingBlock.cpp | 28 ++++++++++++----
...position-absolute-containing-block-001-ref.html | 27 +++++++++++++++
.../position-absolute-containing-block-001.html | 30 +++++++++++++++++
...position-absolute-containing-block-002-ref.html | 27 +++++++++++++++
.../position-absolute-containing-block-002.html | 38 ++++++++++++++++++++++
.../w3c-css/submitted/flexbox/reftest.list | 4 +++
6 files changed, 148 insertions(+), 6 deletions(-)
diff --git a/layout/generic/nsAbsoluteContainingBlock.cpp b/layout/generic/nsAbsoluteContainingBlock.cpp
index 7c48aae..e3c847d 100644
--- a/layout/generic/nsAbsoluteContainingBlock.cpp
+++ b/layout/generic/nsAbsoluteContainingBlock.cpp
@@ -409,14 +409,30 @@ OffsetToAlignedStaticPos(const ReflowInput& aKidReflowInput,
? GetOrthogonalAxis(aAbsPosCBAxis)
: aAbsPosCBAxis);
+ const bool placeholderContainerIsContainingBlock =
+ aPlaceholderContainer == aKidReflowInput.mCBReflowInput->mFrame;
+
nsIAtom* parentType = aPlaceholderContainer->GetType();
LogicalSize alignAreaSize(pcWM);
if (parentType == nsGkAtoms::flexContainerFrame) {
- // The alignment container is the flex container's content box:
- alignAreaSize = aPlaceholderContainer->GetLogicalSize(pcWM);
- LogicalMargin pcBorderPadding =
- aPlaceholderContainer->GetLogicalUsedBorderAndPadding(pcWM);
- alignAreaSize -= pcBorderPadding.Size(pcWM);
+ // We store the frame rect in FinishAndStoreOverflow, which runs _after_
+ // reflowing the absolute frames, so handle the special case of the frame
+ // being the actual containing block here, by getting the size from
+ // aAbsPosCBSize.
+ //
+ // The alignment container is the flex container's content box.
+ if (placeholderContainerIsContainingBlock) {
+ alignAreaSize = aAbsPosCBSize.ConvertTo(pcWM, aAbsPosCBWM);
+ // aAbsPosCBSize is the padding-box, so substract the padding to get the
+ // content box.
+ alignAreaSize -=
+ aPlaceholderContainer->GetLogicalUsedPadding(pcWM).Size(pcWM);
+ } else {
+ alignAreaSize = aPlaceholderContainer->GetLogicalSize(pcWM);
+ LogicalMargin pcBorderPadding =
+ aPlaceholderContainer->GetLogicalUsedBorderAndPadding(pcWM);
+ alignAreaSize -= pcBorderPadding.Size(pcWM);
+ }
} else if (parentType == nsGkAtoms::gridContainerFrame) {
// This abspos elem's parent is a grid container. Per CSS Grid 10.1 & 10.2:
// - If the grid container *also* generates the abspos containing block (a
@@ -424,7 +440,7 @@ OffsetToAlignedStaticPos(const ReflowInput& aKidReflowInput,
// the alignment container, too. (And its size is aAbsPosCBSize.)
// - Otherwise, we use the grid's padding box as the alignment container.
// https://drafts.csswg.org/css-grid/#static-position
- if (aPlaceholderContainer == aKidReflowInput.mCBReflowInput->mFrame) {
+ if (placeholderContainerIsContainingBlock) {
// The alignment container is the grid area that we're using as the
// absolute containing block.
alignAreaSize = aAbsPosCBSize.ConvertTo(pcWM, aAbsPosCBWM);
diff --git a/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-001-ref.html b/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-001-ref.html
new file mode 100644
index 0000000..08eec86
--- /dev/null
+++ b/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-001-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html><head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8"><title>CSS Test Reference</title>
+<meta charset="utf-8">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio at crisal.io">
+<style>
+.parent {
+ position: fixed;
+ top: 0;
+ left: 0;
+ display: block;
+ width: 200px;
+ height: 200px;
+ background: yellow;
+}
+
+.child {
+ position: absolute;
+ left: 50px;
+ top: 50px;
+ width: 100px;
+ height: 100px;
+ background: green;
+}
+</style>
+</head><body><div class="parent"><div class="child"></div></div>
+</body></html>
\ No newline at end of file
diff --git a/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-001.html b/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-001.html
new file mode 100644
index 0000000..5f623cb
--- /dev/null
+++ b/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-001.html
@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html><head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8"><title>CSS Test: Absolutely positioned children of flex container with CSS align</title>
+<meta charset="utf-8">
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#abspos-items">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1386654">
+<link rel="match" href="https://hg.mozilla.org/mozilla-central/raw-file/6538de3b6137/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-001-ref.html">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio at crisal.io">
+<style>
+.parent {
+ position: fixed;
+ top: 0;
+ left: 0;
+ display: flex;
+ align-items: center;
+ justify-content: center;
+ width: 200px;
+ height: 200px;
+ background: yellow;
+}
+
+.child {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background: green;
+}
+</style>
+</head><body><div class="parent"><div class="child"></div></div>
+</body></html>
\ No newline at end of file
diff --git a/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002-ref.html b/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002-ref.html
new file mode 100644
index 0000000..df73004
--- /dev/null
+++ b/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002-ref.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html><head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8"><title>CSS Test Reference</title>
+<meta charset="utf-8">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio at crisal.io">
+<style>
+.parent {
+ position: fixed;
+ top: 0;
+ left: 0;
+ display: block;
+ width: 200px;
+ height: 200px;
+ background: yellow;
+}
+
+.child {
+ position: absolute;
+ left: 60px;
+ top: 60px;
+ width: 100px;
+ height: 100px;
+ background: green;
+}
+</style>
+</head><body><div class="parent"><div class="child"></div></div>
+</body></html>
\ No newline at end of file
diff --git a/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002.html b/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002.html
new file mode 100644
index 0000000..9e89c5a
--- /dev/null
+++ b/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html><head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8"><title>CSS Test: Absolutely positioned children of flex container with CSS align</title>
+<meta charset="utf-8">
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#abspos-items">
+<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1386654">
+<link rel="match" href="https://hg.mozilla.org/mozilla-central/raw-file/6538de3b6137/layout/reftests/w3c-css/submitted/flexbox/position-absolute-containing-block-002-ref.html">
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio at crisal.io">
+<style>
+.parent {
+ position: fixed;
+ top: 0;
+ left: 0;
+ display: flex;
+ align-items: center;
+ justify-content: center;
+ width: 180px;
+ height: 180px;
+
+ /* Expand the background area to 200px, without touching the content-box,
+ which is what flex absolute children should be aligned relative to. */
+ border-top: 5px solid yellow;
+ padding-top: 15px;
+ border-left: 5px solid yellow;
+ padding-left: 15px;
+
+ background: yellow;
+}
+
+.child {
+ position: absolute;
+ width: 100px;
+ height: 100px;
+ background: green;
+}
+</style>
+</head><body><div class="parent"><div class="child"></div></div>
+</body></html>
\ No newline at end of file
diff --git a/layout/reftests/w3c-css/submitted/flexbox/reftest.list b/layout/reftests/w3c-css/submitted/flexbox/reftest.list
index fd8bfcc..3df75ae 100644
--- a/layout/reftests/w3c-css/submitted/flexbox/reftest.list
+++ b/layout/reftests/w3c-css/submitted/flexbox/reftest.list
@@ -211,3 +211,7 @@ fails == flexbox-min-height-auto-002b.html flexbox-min-height-auto-002-ref.html
== flexbox-single-line-clamp-1.html flexbox-single-line-clamp-1-ref.html
== flexbox-single-line-clamp-2.html flexbox-single-line-clamp-2-ref.html
== flexbox-single-line-clamp-3.html flexbox-single-line-clamp-3-ref.html
+
+# Flexbox as an absolute containing block.
+== position-absolute-containing-block-001.html position-absolute-containing-block-001-ref.html
+== position-absolute-containing-block-002.html position-absolute-containing-block-002-ref.html
--
Alioth's /home/x2go-admin/maintenancescripts/git/hooks/post-receive-email on /srv/git/code.x2go.org/pale-moon.git
More information about the x2go-commits
mailing list