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LibWeb: Use the margin box of floating elements for flowing around

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Inline content flows around the entire margin box of floating elements,
not just the content box.
This commit is contained in:
Andreas Kling 2020-12-12 19:58:23 +01:00
parent 66e9dde86f
commit 2b8c7faee4
Notes: sideshowbarker 2024-07-19 00:54:56 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/2b8c7faee48
3 changed files with 35 additions and 2 deletions
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17
Base/res/html/misc/float-2.html Normal file
View file

@ -0,0 +1,17 @@
<!DOCTYPE html>
<html>
<head>
<style>
#b {
border: 1px solid red;
width: 50px;
height: 50px;
float: left;
}
</style>
</head>
<body>
<div id=b></div>
<div id=a>Text</div>
</body>
</html>

16
Libraries/LibWeb/Layout/Box.h
View file

@ -58,6 +58,22 @@ public:
return width() + border_box.left + border_box.right;
}
Gfx::FloatRect content_box_as_relative_rect() const
{
return { m_offset, m_size };
}
Gfx::FloatRect margin_box_as_relative_rect() const
{
auto rect = content_box_as_relative_rect();
auto margin_box = box_model().margin_box(*this);
rect.set_x(rect.x() - margin_box.left);
rect.set_width(rect.width() + margin_box.left + margin_box.right);
rect.set_y(rect.y() - margin_box.top);
rect.set_height(rect.height() + margin_box.top + margin_box.bottom);
return rect;
}
float absolute_x() const { return absolute_rect().x(); }
float absolute_y() const { return absolute_rect().y(); }
Gfx::FloatPoint absolute_position() const { return absolute_rect().location(); }

4
Libraries/LibWeb/Layout/InlineFormattingContext.cpp
View file

@ -62,7 +62,7 @@ static AvailableSpaceForLineInfo available_space_for_line(const InlineFormatting
for (ssize_t i = bfc.left_floating_boxes().size() - 1; i >= 0; --i) {
auto& floating_box = *bfc.left_floating_boxes().at(i);
Gfx::FloatRect rect { floating_box.effective_offset(), floating_box.size() };
auto rect = floating_box.margin_box_as_relative_rect();
if (rect.contains_vertically(y)) {
info.left = rect.right() + 1;
break;
@ -73,7 +73,7 @@ static AvailableSpaceForLineInfo available_space_for_line(const InlineFormatting
for (ssize_t i = bfc.right_floating_boxes().size() - 1; i >= 0; --i) {
auto& floating_box = *bfc.right_floating_boxes().at(i);
Gfx::FloatRect rect { floating_box.effective_offset(), floating_box.size() };
auto rect = floating_box.margin_box_as_relative_rect();
if (rect.contains_vertically(y)) {
info.right = rect.left() - 1;
break;