summaryrefslogtreecommitdiffstats
path: root/layout/reftests/image/image-object-fit-with-background-2.html
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /layout/reftests/image/image-object-fit-with-background-2.html
parentInitial commit. (diff)
downloadthunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz
thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--layout/reftests/image/image-object-fit-with-background-2.html40
1 files changed, 40 insertions, 0 deletions
diff --git a/layout/reftests/image/image-object-fit-with-background-2.html b/layout/reftests/image/image-object-fit-with-background-2.html
new file mode 100644
index 0000000000..6f0219a289
--- /dev/null
+++ b/layout/reftests/image/image-object-fit-with-background-2.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<!--
+ Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/
+-->
+<!--
+ This testcase ensures that we paint the background around an opaque image,
+ when the image is kept from filling the container via 'object-fit' (and
+ the img element is fragmented). This is an interesting case because, by
+ default, images fill their container, which means we can often optimize
+ away the background completely. BUT, if "object-fit" prevents the image
+ from filling its container, we can't optimize away the background; it need
+ to be painted in the uncovered area.
+-->
+<html class="reftest-paged">
+ <head>
+ <meta charset="utf-8">
+ <style type="text/css">
+ img.test {
+ background: salmon;
+ object-fit: none;
+ width: 32px;
+ /* We make the height 6in larger than the image's intrinsic height,
+ * which gives us the following happy results:
+ * (1) the <img> will split over several 3in tall reftest-paged cards
+ * (so, we get to test fragmentation).
+ * (2) the image pixels end up on the second fragment (not the first),
+ * so we get to test image-data painting on later fragments.
+ * (3) the reference case can easily match us using a simple img
+ * with 3in-tall divs before & after it.
+ */
+ height: calc(32px + 6in);
+ display: block; /* Required for fragmentation */
+ }
+ </style>
+ </head>
+ <body>
+ <img class="test" src="blue-32x32.png">
+ </body>
+</html>