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LibWeb: Account for scroll offset in overflow clip rect calculation

This change addresses an issue with overflow clipping in scenarios
where `overflow: hidden` is applied to boxes nested within elements
with `overflow: scroll`.

Fixes https://github.com/SerenityOS/serenity/issues/22733
This commit is contained in:
Aliaksandr Kalenik 2024-01-31 05:25:12 +01:00 committed by Andreas Kling
parent 4330cdee74
commit 9dddd6b028
5 changed files with 281 additions and 1 deletions

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@ -0,0 +1,76 @@
<!DOCTYPE html>
<style>
html {
background: white;
}
body {
position: absolute;
inset: 0px;
display: flex;
background: pink;
}
#outer {
overflow-x: hidden;
overflow-y: scroll;
background: orange;
margin-top: 100px;
}
#inner {
height: 1000px;
background: magenta;
}
.item {
overflow: hidden;
background: yellow;
}
.wrapper {
box-sizing: border-box;
border: 1px solid black;
background: lime;
height: 50px;
width: 200px;
display: flex;
justify-content: center;
align-items: center;
}
</style><body><div id="outer"><div id="inner">
<div class="item"><div class="wrapper">11</div></div>
<div class="item"><div class="wrapper">12</div></div>
<div class="item"><div class="wrapper">13</div></div>
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@ -0,0 +1,48 @@
<!DOCTYPE html><style>
html {
background: white;
}
body {
position: absolute;
inset: 0px;
display: flex;
background: pink;
}
#outer {
margin-top: 100px;
overflow-x: hidden;
overflow-y: scroll;
background: orange;
}
#inner {
height: 1000px;
background: magenta;
}
.item {
box-sizing: border-box;
border: 1px solid black;
width: 200px;
height: 50px;
overflow: hidden;
background: lime;
}
</style><body><div id="outer"><div id="inner">
<div class="item">11</div>
<div class="item">12</div>
<div class="item">13</div>
<div class="item">14</div>
<div class="item">15</div>
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<!DOCTYPE html>
<link rel="match" href="reference/scrollable-contains-boxes-with-hidden-overflow-1-ref.html" />
<style>
html {
background: white;
}
body {
position: absolute;
inset: 0px;
display: flex;
background: pink;
}
#outer {
overflow-x: hidden;
overflow-y: scroll;
background: orange;
margin-top: 100px;
}
#inner {
height: 1000px;
background: magenta;
}
.item {
overflow: hidden;
background: yellow;
}
.wrapper {
box-sizing: border-box;
border: 1px solid black;
background: lime;
height: 50px;
width: 200px;
display: flex;
justify-content: center;
align-items: center;
}
</style><body><div id="outer"><div id="inner">
<div class="item"><div class="wrapper">1</div></div>
<div class="item"><div class="wrapper">2</div></div>
<div class="item"><div class="wrapper">3</div></div>
<div class="item"><div class="wrapper">4</div></div>
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<div class="item"><div class="wrapper">50</div></div>
<script>
const scrollContainer = document.getElementById("outer");
scrollContainer.scrollTop = 500;
</script>

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<!DOCTYPE html>
<link rel="match" href="reference/scrollable-contains-boxes-with-hidden-overflow-2-ref.html" />
<style>
html {
background: white;
}
body {
position: absolute;
inset: 0px;
display: flex;
background: pink;
}
#outer {
margin-top: 100px;
overflow-x: hidden;
overflow-y: scroll;
background: orange;
}
#inner {
height: 1000px;
background: magenta;
}
.item {
box-sizing: border-box;
border: 1px solid black;
width: 200px;
height: 50px;
overflow: hidden;
background: lime;
}
</style><body><div id="outer"><div id="inner">
<div class="item">1</div>
<div class="item">2</div>
<div class="item">3</div>
<div class="item">4</div>
<div class="item">5</div>
<div class="item">6</div>
<div class="item">7</div>
<div class="item">8</div>
<div class="item">9</div>
<div class="item">10</div>
<div class="item">11</div>
<div class="item">12</div>
<div class="item">13</div>
<div class="item">14</div>
<div class="item">15</div>
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<div class="item">27</div>
<div class="item">28</div>
<div class="item">29</div>
<script>
const scrollContainer = document.getElementById("outer");
scrollContainer.scrollTop = 500;
</script>

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@ -128,6 +128,7 @@ CSSPixelRect PaintableBox::compute_absolute_padding_rect_with_css_transform_appl
auto offset = block->paintable_box()->offset();
auto affine_transform = Gfx::extract_2d_affine_transform(block->paintable_box()->transform());
offset.translate_by(affine_transform.translation().to_type<CSSPixels>());
offset.translate_by(-block->paintable_box()->scroll_offset());
rect.translate_by(offset);
}
auto affine_transform = Gfx::extract_2d_affine_transform(transform());
@ -598,7 +599,7 @@ void PaintableWithLines::paint(PaintContext& context, PaintPhase phase) const
bool should_clip_overflow = computed_values().overflow_x() != CSS::Overflow::Visible && computed_values().overflow_y() != CSS::Overflow::Visible;
Optional<u32> corner_clip_id;
auto clip_box = context.rounded_device_rect(absolute_padding_box_rect());
auto clip_box = context.rounded_device_rect(compute_absolute_padding_rect_with_css_transform_applied());
if (should_clip_overflow) {
context.recording_painter().save();