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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
| commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
| tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /layout/reftests/bugs/1529992-1.html | |
| parent | Initial commit. (diff) | |
| download | thunderbird-upstream.tar.xz thunderbird-upstream.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 'layout/reftests/bugs/1529992-1.html')
| -rw-r--r-- | layout/reftests/bugs/1529992-1.html | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/layout/reftests/bugs/1529992-1.html b/layout/reftests/bugs/1529992-1.html new file mode 100644 index 0000000000..d54c243ac6 --- /dev/null +++ b/layout/reftests/bugs/1529992-1.html @@ -0,0 +1,94 @@ +<!DOCTYPE html> + +<!-- +This is a bunch of tests that verify we properly handle weird corner cases +in shadow bounding boxes. + +Problem 1: parts of text that are seemingly hidden (as in overflow:hidden) +may actually be visible in shadows, because they include an offset. We can +mess this up in two ways: + + 1a. we completely culled a glyph from existence for being out of view + + 1b. we have all the glyphs but are clipping parts out in the shadow + +Problem 2: shadows that are defined by the ::selection pseudo-class are +trapped inside the local selection rect of the item. This means they +*can and should* sometimes get weirdly clipped (shadow6 and shadow7 in +version 2 of this test). Also just more generally selections take a bunch +of special paths in text styling so they are included to make sure both +paths are tested. + +We messed all of these up for webrender because it handles shadows in a very +different way from non-webrender. + +The selection-box is inherently implementation-specific, so I apologize in +advanced if this test breaks when you tweak how selections work. Hopefully +only shadow6 needs to be tweaked? +--> + +<html class="reftest-wait"><head> +<script type="text/javascript"> +function onload() { + var range = document.createRange(); + range.selectNodeContents(document.getElementById("selectMe")); + var sel = window.getSelection(); + sel.removeAllRanges(); + sel.addRange(range); + + document.documentElement.className = ''; +} +</script> +<style> +body { + font-size: 60px; + position: absolute; + margin: 0px; + padding: 0px; +} +div { + position: absolute; + margin: 0px; + padding: 0px; +} +div::selection { + /* hide all selection boxes for convenience */ + background-color: transparent; +} +#shadow1 { + text-shadow: 80px 50px 0px; + top: -30px; + left: -60px; +} +#shadow2 { + text-shadow: 80px 50px 10px; + top: 100px; + left: -60px; +} +#shadow3 { + text-shadow: 80px 50px 10px; + top: -30px; + left: 100px; +} +#shadow4 { + top: 200px; + left: -60px; +} +#shadow4::selection { + text-shadow: 20px 5px 10px; +} +#shadow5 { + top: -30px; + left: 250px; +} +#shadow5::selection { + text-shadow: 20px 5px 10px; +} +</style> +</head><body id="selectMe" onload="onload()"> + <div id="shadow1">hello</div> + <div id="shadow2">hello</div> + <div id="shadow3">hello</div> + <div id="shadow4">hello </div> + <div id="shadow5">hello </div> +</body></html> |