LibWeb: Fix absolute positioning issues
Make sure the insets and margins calculated according to the spec are not later ignored and ad-hoc recomputed in layout_absolutely_positioned_element. Use the static position calculation in a couple of places where the spec (and comment) was indicating it should be used. Fixes #19362
This commit is contained in:
Sebastian Zaha
Andreas Kling
parent
61fe7c230f
commit
fd37ad3a84
Notes:
sideshowbarker
2024-07-17 17:38:29 +09:00
Author: https://github.com/SebastianZaha Commit: https://github.com/SerenityOS/serenity/commit/fd37ad3a84 Pull-request: https://github.com/SerenityOS/serenity/pull/19866
8 changed files with 134 additions and 134 deletions
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@ -0,0 +1,10 @@
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@ -4,5 +4,5 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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@ -4,73 +4,73 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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@ -4,33 +4,33 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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TextNode <#text>
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@ -52,9 +52,9 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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TextNode <#text>
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@ -68,33 +68,33 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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@ -116,9 +116,9 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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frag 0 from TextNode start: 0, length: 8, rect: [68,1773 61.765625x17.46875]
|
||||
frag 0 from TextNode start: 0, length: 8, rect: [68,1758 61.765625x17.46875]
|
||||
"flex-end"
|
||||
TextNode <#text>
|
||||
BlockContainer <(anonymous)> at (38,1838) content-size 724x0 children: inline
|
||||
|
|
@ -180,9 +180,9 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
|
|||
BlockContainer <(anonymous)> at (38,2018) content-size 724x0 children: inline
|
||||
TextNode <#text>
|
||||
Box <div.column.outer.space-between> at (53,2033) content-size 300x60 flex-container(column) [FFC] children: not-inline
|
||||
BlockContainer <div> at (68,2033) content-size 150x50 positioned [BFC] children: inline
|
||||
BlockContainer <div> at (68,2048) content-size 150x50 positioned [BFC] children: inline
|
||||
line 0 width: 115.515625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
|
||||
frag 0 from TextNode start: 0, length: 13, rect: [68,2033 115.515625x17.46875]
|
||||
frag 0 from TextNode start: 0, length: 13, rect: [68,2048 115.515625x17.46875]
|
||||
"space-between"
|
||||
TextNode <#text>
|
||||
BlockContainer <(anonymous)> at (38,2108) content-size 724x0 children: inline
|
||||
|
|
@ -196,33 +196,33 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
|
|||
BlockContainer <(anonymous)> at (38,2198) content-size 724x0 children: inline
|
||||
TextNode <#text>
|
||||
Box <div.column.reverse.outer.start> at (53,2213) content-size 300x60 flex-container(column-reverse) [FFC] children: not-inline
|
||||
BlockContainer <div> at (68,2223) content-size 150x50 positioned [BFC] children: inline
|
||||
BlockContainer <div> at (68,2238) content-size 150x50 positioned [BFC] children: inline
|
||||
line 0 width: 41.234375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
|
||||
frag 0 from TextNode start: 0, length: 5, rect: [68,2223 41.234375x17.46875]
|
||||
frag 0 from TextNode start: 0, length: 5, rect: [68,2238 41.234375x17.46875]
|
||||
"start"
|
||||
TextNode <#text>
|
||||
BlockContainer <(anonymous)> at (38,2288) content-size 724x0 children: inline
|
||||
TextNode <#text>
|
||||
Box <div.column.reverse.outer.flex-start> at (53,2303) content-size 300x60 flex-container(column-reverse) [FFC] children: not-inline
|
||||
BlockContainer <div> at (68,2313) content-size 150x50 positioned [BFC] children: inline
|
||||
BlockContainer <div> at (68,2328) content-size 150x50 positioned [BFC] children: inline
|
||||
line 0 width: 76.8125, height: 17.46875, bottom: 17.46875, baseline: 13.53125
|
||||
frag 0 from TextNode start: 0, length: 10, rect: [68,2313 76.8125x17.46875]
|
||||
frag 0 from TextNode start: 0, length: 10, rect: [68,2328 76.8125x17.46875]
|
||||
"flex-start"
|
||||
TextNode <#text>
|
||||
BlockContainer <(anonymous)> at (38,2378) content-size 724x0 children: inline
|
||||
TextNode <#text>
|
||||
Box <div.column.reverse.outer.end> at (53,2393) content-size 300x60 flex-container(column-reverse) [FFC] children: not-inline
|
||||
BlockContainer <div> at (68,2393) content-size 150x50 positioned [BFC] children: inline
|
||||
BlockContainer <div> at (68,2378) content-size 150x50 positioned [BFC] children: inline
|
||||
line 0 width: 26.1875, height: 17.46875, bottom: 17.46875, baseline: 13.53125
|
||||
frag 0 from TextNode start: 0, length: 3, rect: [68,2393 26.1875x17.46875]
|
||||
frag 0 from TextNode start: 0, length: 3, rect: [68,2378 26.1875x17.46875]
|
||||
"end"
|
||||
TextNode <#text>
|
||||
BlockContainer <(anonymous)> at (38,2468) content-size 724x0 children: inline
|
||||
TextNode <#text>
|
||||
Box <div.column.reverse.outer.flex-end> at (53,2483) content-size 300x60 flex-container(column-reverse) [FFC] children: not-inline
|
||||
BlockContainer <div> at (68,2483) content-size 150x50 positioned [BFC] children: inline
|
||||
BlockContainer <div> at (68,2468) content-size 150x50 positioned [BFC] children: inline
|
||||
line 0 width: 61.765625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
|
||||
frag 0 from TextNode start: 0, length: 8, rect: [68,2483 61.765625x17.46875]
|
||||
frag 0 from TextNode start: 0, length: 8, rect: [68,2468 61.765625x17.46875]
|
||||
"flex-end"
|
||||
TextNode <#text>
|
||||
BlockContainer <(anonymous)> at (38,2558) content-size 724x0 children: inline
|
||||
|
|
@ -244,9 +244,9 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
|
|||
BlockContainer <(anonymous)> at (38,2738) content-size 724x0 children: inline
|
||||
TextNode <#text>
|
||||
Box <div.column.reverse.outer.space-between> at (53,2753) content-size 300x60 flex-container(column-reverse) [FFC] children: not-inline
|
||||
BlockContainer <div> at (68,2753) content-size 150x50 positioned [BFC] children: inline
|
||||
BlockContainer <div> at (68,2768) content-size 150x50 positioned [BFC] children: inline
|
||||
line 0 width: 115.515625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
|
||||
frag 0 from TextNode start: 0, length: 13, rect: [68,2753 115.515625x17.46875]
|
||||
frag 0 from TextNode start: 0, length: 13, rect: [68,2768 115.515625x17.46875]
|
||||
"space-between"
|
||||
TextNode <#text>
|
||||
BlockContainer <(anonymous)> at (38,2828) content-size 724x0 children: inline
|
||||
|
|
|
|||
|
|
@ -1,14 +1,14 @@
|
|||
Viewport <#document> at (0,0) content-size 800x600 children: not-inline
|
||||
BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
|
||||
BlockContainer <body> at (8,8) content-size 784x0 children: inline
|
||||
BlockContainer <div#container> at (8,8) content-size 500x400 positioned [BFC] children: inline
|
||||
BlockContainer <div#container> at (28,28) content-size 500x400 positioned [BFC] children: inline
|
||||
TextNode <#text>
|
||||
BlockContainer <div#red> at (38,38) content-size 100x100 positioned [BFC] children: not-inline
|
||||
BlockContainer <div#red> at (58,58) content-size 100x100 positioned [BFC] children: not-inline
|
||||
TextNode <#text>
|
||||
BlockContainer <div#green> at (338,78) content-size 100x100 positioned [BFC] children: not-inline
|
||||
BlockContainer <div#green> at (358,98) content-size 100x100 positioned [BFC] children: not-inline
|
||||
TextNode <#text>
|
||||
BlockContainer <div#blue> at (28,288) content-size 100x100 positioned [BFC] children: not-inline
|
||||
BlockContainer <div#blue> at (48,308) content-size 100x100 positioned [BFC] children: not-inline
|
||||
TextNode <#text>
|
||||
BlockContainer <div#yellow> at (388,288) content-size 100x100 positioned [BFC] children: not-inline
|
||||
BlockContainer <div#yellow> at (408,308) content-size 100x100 positioned [BFC] children: not-inline
|
||||
TextNode <#text>
|
||||
TextNode <#text>
|
||||
|
|
|
|||
|
|
@ -0,0 +1,27 @@
|
|||
<style>
|
||||
* { border: 1px solid black; }
|
||||
div {
|
||||
position: absolute;
|
||||
width: 10px;
|
||||
height: 10px;
|
||||
}
|
||||
.only-t-l {
|
||||
top: 5px;
|
||||
left: 5px;
|
||||
background-color: red;
|
||||
}
|
||||
.only-mt-ml {
|
||||
margin: 5px;
|
||||
background-color: orange;
|
||||
}
|
||||
.both {
|
||||
top: 5px;
|
||||
left: 5px;
|
||||
margin: 5px;
|
||||
background-color: green;
|
||||
}
|
||||
</style>
|
||||
<body>
|
||||
<div class="only-t-l"></div>
|
||||
<div class="only-mt-ml"></div>
|
||||
<div class="both"></div>
|
||||
|
|
@ -2155,8 +2155,9 @@ CSSPixelPoint FlexFormattingContext::calculate_static_position(Box const& box) c
|
|||
CSSPixels cross_margin_after = is_row_layout() ? box_state.margin_bottom : box_state.margin_right;
|
||||
CSSPixels cross_border_before = is_row_layout() ? box_state.border_top : box_state.border_left;
|
||||
CSSPixels cross_border_after = is_row_layout() ? box_state.border_bottom : box_state.border_right;
|
||||
CSSPixels cross_padding_before = is_row_layout() ? box_state.padding_top : box_state.padding_left;
|
||||
CSSPixels cross_padding_after = is_row_layout() ? box_state.padding_bottom : box_state.padding_right;
|
||||
CSSPixels main_border_before = is_row_layout() ? box_state.border_left : box_state.border_top;
|
||||
CSSPixels main_border_after = is_row_layout() ? box_state.border_right : box_state.border_bottom;
|
||||
|
||||
switch (alignment_for_item(box)) {
|
||||
case CSS::AlignItems::Baseline:
|
||||
|
|
@ -2167,7 +2168,7 @@ CSSPixelPoint FlexFormattingContext::calculate_static_position(Box const& box) c
|
|||
case CSS::AlignItems::SelfStart:
|
||||
case CSS::AlignItems::Stretch:
|
||||
case CSS::AlignItems::Normal:
|
||||
cross_offset = -half_line_size + cross_margin_before + cross_border_before + cross_padding_before;
|
||||
cross_offset = -half_line_size + cross_margin_before;
|
||||
break;
|
||||
case CSS::AlignItems::End:
|
||||
case CSS::AlignItems::SelfEnd:
|
||||
|
|
@ -2175,7 +2176,7 @@ CSSPixelPoint FlexFormattingContext::calculate_static_position(Box const& box) c
|
|||
cross_offset = half_line_size - inner_cross_size(box) - cross_margin_after - cross_border_after - cross_padding_after;
|
||||
break;
|
||||
case CSS::AlignItems::Center:
|
||||
cross_offset = -(inner_cross_size(box) / 2.0);
|
||||
cross_offset = -((inner_cross_size(box) + cross_border_before + cross_border_after) / 2.0);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
|
@ -2198,7 +2199,7 @@ CSSPixelPoint FlexFormattingContext::calculate_static_position(Box const& box) c
|
|||
break;
|
||||
case CSS::JustifyContent::End:
|
||||
case CSS::JustifyContent::FlexEnd:
|
||||
main_offset = 0;
|
||||
main_offset = -main_border_before - main_border_after;
|
||||
pack_from_end = !is_direction_reverse();
|
||||
break;
|
||||
case CSS::JustifyContent::SpaceBetween:
|
||||
|
|
@ -2209,7 +2210,7 @@ CSSPixelPoint FlexFormattingContext::calculate_static_position(Box const& box) c
|
|||
case CSS::JustifyContent::SpaceAround:
|
||||
case CSS::JustifyContent::SpaceEvenly:
|
||||
pack_from_end = false;
|
||||
main_offset = inner_main_size(flex_container()) / 2.0 - inner_main_size(box) / 2.0;
|
||||
main_offset = (inner_main_size(flex_container()) - inner_main_size(box) - main_border_before - main_border_after) / 2.0;
|
||||
break;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -578,13 +578,13 @@ void FormattingContext::compute_width_for_absolutely_positioned_non_replaced_ele
|
|||
|
||||
auto computed_left = computed_values.inset().left();
|
||||
auto computed_right = computed_values.inset().right();
|
||||
auto left = computed_values.inset().left().to_px(box, width_of_containing_block);
|
||||
auto right = computed_values.inset().right().to_px(box, width_of_containing_block);
|
||||
|
||||
auto try_compute_width = [&](auto const& a_width) {
|
||||
margin_left = computed_values.margin().left().resolved(box, width_of_containing_block_as_length);
|
||||
margin_right = computed_values.margin().right().resolved(box, width_of_containing_block_as_length);
|
||||
|
||||
auto left = computed_values.inset().left().to_px(box, width_of_containing_block);
|
||||
auto right = computed_values.inset().right().to_px(box, width_of_containing_block);
|
||||
auto width = a_width;
|
||||
|
||||
auto solve_for_left = [&] {
|
||||
|
|
@ -610,7 +610,8 @@ void FormattingContext::compute_width_for_absolutely_positioned_non_replaced_ele
|
|||
// is 'ltr' set 'left' to the static position and apply rule number three below;
|
||||
// otherwise, set 'right' to the static position and apply rule number one below.
|
||||
// FIXME: This is very hackish.
|
||||
left = 0;
|
||||
auto static_position = calculate_static_position(box);
|
||||
left = static_position.x();
|
||||
goto Rule3;
|
||||
}
|
||||
|
||||
|
|
@ -666,8 +667,8 @@ void FormattingContext::compute_width_for_absolutely_positioned_non_replaced_ele
|
|||
// Then solve for 'left' (if 'direction is 'rtl') or 'right' (if 'direction' is 'ltr').
|
||||
else if (computed_left.is_auto() && computed_right.is_auto() && !width.is_auto()) {
|
||||
// FIXME: Check direction
|
||||
// FIXME: Use the static-position containing block
|
||||
left = 0;
|
||||
auto static_position = calculate_static_position(box);
|
||||
left = static_position.x();
|
||||
right = solve_for_right();
|
||||
}
|
||||
|
||||
|
|
@ -722,11 +723,10 @@ void FormattingContext::compute_width_for_absolutely_positioned_non_replaced_ele
|
|||
|
||||
auto& box_state = m_state.get_mutable(box);
|
||||
box_state.set_content_width(used_width.to_px(box));
|
||||
|
||||
box_state.inset_left = left;
|
||||
box_state.inset_right = right;
|
||||
box_state.margin_left = margin_left.to_px(box);
|
||||
box_state.margin_right = margin_right.to_px(box);
|
||||
box_state.border_left = border_left;
|
||||
box_state.border_right = border_right;
|
||||
box_state.padding_left = padding_left;
|
||||
box_state.padding_right = padding_right;
|
||||
}
|
||||
|
|
@ -1014,15 +1014,18 @@ void FormattingContext::compute_height_for_absolutely_positioned_non_replaced_el
|
|||
// the final used values for vertical margin/border/padding.
|
||||
|
||||
auto& box_state = m_state.get_mutable(box);
|
||||
box_state.set_content_height(used_height);
|
||||
|
||||
// do not set calculated insets or margins on the first pass, there will be a second pass
|
||||
if (before_or_after_inside_layout == BeforeOrAfterInsideLayout::Before)
|
||||
return;
|
||||
|
||||
box_state.inset_top = top.to_px(box, width_of_containing_block);
|
||||
box_state.inset_bottom = bottom.to_px(box, width_of_containing_block);
|
||||
box_state.margin_top = margin_top.to_px(box, width_of_containing_block);
|
||||
box_state.margin_bottom = margin_bottom.to_px(box, width_of_containing_block);
|
||||
box_state.border_top = box.computed_values().border_top().width;
|
||||
box_state.border_bottom = box.computed_values().border_bottom().width;
|
||||
box_state.padding_top = box.computed_values().padding().top().to_px(box, width_of_containing_block);
|
||||
box_state.padding_bottom = box.computed_values().padding().bottom().to_px(box, width_of_containing_block);
|
||||
|
||||
// And here is where we assign the box's content height.
|
||||
box_state.set_content_height(used_height);
|
||||
}
|
||||
|
||||
// NOTE: This is different from content_box_rect_in_ancestor_coordinate_space() as this does *not* follow the containing block chain up, but rather the parent() chain.
|
||||
|
|
@ -1077,9 +1080,9 @@ CSSPixelPoint FormattingContext::calculate_static_position(Box const& box) const
|
|||
// Easy case: no previous sibling, we're at the top of the containing block.
|
||||
}
|
||||
} else {
|
||||
x = m_state.get(box).margin_box_left();
|
||||
x = m_state.get(box).margin_left;
|
||||
// We're among block siblings, Y can be calculated easily.
|
||||
y = m_state.get(box).margin_box_top();
|
||||
y = m_state.get(box).margin_top;
|
||||
}
|
||||
auto offset_to_static_parent = content_box_rect_in_static_position_ancestor_coordinate_space(box, *box.containing_block());
|
||||
return offset_to_static_parent.location().translated(x, y);
|
||||
|
|
@ -1095,6 +1098,13 @@ void FormattingContext::layout_absolutely_positioned_element(Box const& box, Ava
|
|||
auto width_of_containing_block_as_length = CSS::Length::make_px(width_of_containing_block);
|
||||
auto height_of_containing_block_as_length = CSS::Length::make_px(height_of_containing_block);
|
||||
|
||||
// The border computed values are not changed by the compute_height & width calculations below.
|
||||
// The spec only adjusts and computes sizes, insets and margins.
|
||||
box_state.border_left = box.computed_values().border_left().width;
|
||||
box_state.border_right = box.computed_values().border_right().width;
|
||||
box_state.border_top = box.computed_values().border_top().width;
|
||||
box_state.border_bottom = box.computed_values().border_bottom().width;
|
||||
|
||||
compute_width_for_absolutely_positioned_element(box, available_space);
|
||||
|
||||
// NOTE: We compute height before *and* after doing inside layout.
|
||||
|
|
@ -1106,59 +1116,11 @@ void FormattingContext::layout_absolutely_positioned_element(Box const& box, Ava
|
|||
|
||||
compute_height_for_absolutely_positioned_element(box, available_space, BeforeOrAfterInsideLayout::After);
|
||||
|
||||
box_state.margin_top = box.computed_values().margin().top().to_px(box, width_of_containing_block);
|
||||
box_state.margin_bottom = box.computed_values().margin().bottom().to_px(box, width_of_containing_block);
|
||||
|
||||
box_state.border_left = box.computed_values().border_left().width;
|
||||
box_state.border_right = box.computed_values().border_right().width;
|
||||
box_state.border_top = box.computed_values().border_top().width;
|
||||
box_state.border_bottom = box.computed_values().border_bottom().width;
|
||||
|
||||
auto const& computed_left = box.computed_values().inset().left();
|
||||
auto const& computed_right = box.computed_values().inset().right();
|
||||
auto const& computed_top = box.computed_values().inset().top();
|
||||
auto const& computed_bottom = box.computed_values().inset().bottom();
|
||||
|
||||
box_state.inset_left = computed_left.to_px(box, width_of_containing_block);
|
||||
box_state.inset_top = computed_top.to_px(box, height_of_containing_block);
|
||||
box_state.inset_right = computed_right.to_px(box, width_of_containing_block);
|
||||
box_state.inset_bottom = computed_bottom.to_px(box, height_of_containing_block);
|
||||
|
||||
auto static_position = calculate_static_position(box);
|
||||
|
||||
CSSPixelPoint used_offset;
|
||||
|
||||
if (!computed_left.is_auto()) {
|
||||
CSSPixels x_offset = box_state.inset_left
|
||||
+ box_state.border_box_left();
|
||||
used_offset.set_x(x_offset + box_state.margin_left);
|
||||
} else if (!computed_right.is_auto()) {
|
||||
CSSPixels x_offset = CSSPixels(0)
|
||||
- box_state.inset_right
|
||||
- box_state.border_box_right();
|
||||
used_offset.set_x(width_of_containing_block + x_offset - box_state.content_width() - box_state.margin_right);
|
||||
} else {
|
||||
// NOTE: static position is content box position so border_box and margin should not be added
|
||||
used_offset.set_x(static_position.x());
|
||||
}
|
||||
|
||||
if (!computed_top.is_auto()) {
|
||||
CSSPixels y_offset = box_state.inset_top
|
||||
+ box_state.border_box_top();
|
||||
used_offset.set_y(y_offset + box_state.margin_top);
|
||||
} else if (!computed_bottom.is_auto()) {
|
||||
CSSPixels y_offset = CSSPixels(0)
|
||||
- box_state.inset_bottom
|
||||
- box_state.border_box_bottom();
|
||||
used_offset.set_y(height_of_containing_block + y_offset - box_state.content_height() - box_state.margin_bottom);
|
||||
} else {
|
||||
// NOTE: static position is content box position so border_box and margin should not be added
|
||||
used_offset.set_y(static_position.y());
|
||||
}
|
||||
|
||||
used_offset.set_x(box_state.inset_left + box_state.margin_box_left());
|
||||
used_offset.set_y(box_state.inset_top + box_state.margin_box_top());
|
||||
// NOTE: Absolutely positioned boxes are relative to the *padding edge* of the containing block.
|
||||
used_offset.translate_by(-containing_block_state.padding_left, -containing_block_state.padding_top);
|
||||
|
||||
box_state.set_content_offset(used_offset);
|
||||
|
||||
if (independent_formatting_context)
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue