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LibWeb: Fix height distribution in "vertical-align: baseline" in TFC
This line changes padding top to align cell content to baseline: `cell.padding_top += m_rows[cell.row_index].baseline - cell.baseline` Which means available for distribution height `height_diff` could have changed so it needs to be refreshed before assigning the rest of it to padding bottom: `cell_state.padding_bottom += height_diff;` Fixes https://github.com/SerenityOS/serenity/issues/22032
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parent
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commit
7b75d0c1f0
Notes:
sideshowbarker
2024-07-17 07:43:44 +09:00
Author: https://github.com/kalenikaliaksandr
Commit: 7b75d0c1f0
Pull-request: https://github.com/SerenityOS/serenity/pull/24022
Issue: https://github.com/SerenityOS/serenity/issues/22032
5 changed files with 113 additions and 6 deletions
21
Tests/LibWeb/Layout/expected/table/acid2-reduction.txt
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Tests/LibWeb/Layout/expected/table/acid2-reduction.txt
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@ -0,0 +1,21 @@
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Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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BlockContainer <html> at (0,0) content-size 800x66 [BFC] children: not-inline
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BlockContainer <body> at (8,8) content-size 784x50 children: not-inline
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TableWrapper <(anonymous)> at (8,8) content-size 100x50 [BFC] children: not-inline
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Box <div.table> at (8,8) content-size 100x50 table-box [TFC] children: not-inline
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Box <(anonymous)> at (8,8) content-size 100x50 table-row children: not-inline
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BlockContainer <(anonymous)> at (8,8) content-size 50x50 table-cell [BFC] children: not-inline
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TableWrapper <(anonymous)> at (8,8) content-size 50x50 [BFC] children: not-inline
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Box <div.second-part> at (8,8) content-size 50x50 table-box [TFC] children: not-inline
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BlockContainer <div.third-part> at (58,58) content-size 50x0 table-cell [BFC] children: not-inline
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ViewportPaintable (Viewport<#document>) [0,0 800x600]
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PaintableWithLines (BlockContainer<HTML>) [0,0 800x66]
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PaintableWithLines (BlockContainer<BODY>) [8,8 784x50]
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PaintableWithLines (TableWrapper(anonymous)) [8,8 100x50]
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PaintableBox (Box<DIV>.table) [8,8 100x50]
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PaintableBox (Box(anonymous)) [8,8 100x50]
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PaintableWithLines (BlockContainer(anonymous)) [8,8 50x50]
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PaintableWithLines (TableWrapper(anonymous)) [8,8 50x50]
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PaintableBox (Box<DIV>.second-part) [8,8 50x50]
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PaintableWithLines (BlockContainer<DIV>.third-part) [58,8 50x50]
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@ -0,0 +1,50 @@
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Viewport <#document> at (0,0) content-size 800x600 children: not-inline
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BlockContainer <html> at (0,0) content-size 800x114 [BFC] children: not-inline
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BlockContainer <body> at (8,8) content-size 784x98 children: not-inline
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TableWrapper <(anonymous)> at (8,8) content-size 615.53125x98 [BFC] children: not-inline
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Box <table> at (9,9) content-size 613.53125x96 table-box [TFC] children: not-inline
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BlockContainer <(anonymous)> (not painted) children: inline
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TextNode <#text>
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Box <tbody> at (9,9) content-size 613.53125x96 table-row-group children: not-inline
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Box <tr> at (9,9) content-size 613.53125x48 table-row children: not-inline
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BlockContainer <td> at (11,11) content-size 349.84375x44 table-cell [BFC] children: inline
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frag 0 from TextNode start: 0, length: 13, rect: [11,11 273.9375x44] baseline: 34
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"Text baseline"
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TextNode <#text>
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BlockContainer <td.small-text> at (364.84375,36.5) content-size 255.6875x11 table-cell [BFC] children: inline
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frag 0 from TextNode start: 0, length: 12, rect: [364.84375,36.5 62.296875x11] baseline: 8.5
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"Smaller text"
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TextNode <#text>
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BlockContainer <(anonymous)> (not painted) children: inline
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TextNode <#text>
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Box <tr> at (9,57) content-size 613.53125x48 table-row children: not-inline
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BlockContainer <td> at (11,59) content-size 349.84375x44 table-cell [BFC] children: inline
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frag 0 from TextNode start: 0, length: 16, rect: [11,59 349.84375x44] baseline: 34
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"Another baseline"
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TextNode <#text>
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BlockContainer <td> at (364.84375,59) content-size 255.6875x44 table-cell [BFC] children: inline
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frag 0 from TextNode start: 0, length: 12, rect: [364.84375,59 255.6875x44] baseline: 34
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"Regular text"
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TextNode <#text>
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BlockContainer <(anonymous)> (not painted) children: inline
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TextNode <#text>
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BlockContainer <(anonymous)> at (8,106) content-size 784x0 children: inline
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TextNode <#text>
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ViewportPaintable (Viewport<#document>) [0,0 800x600]
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PaintableWithLines (BlockContainer<HTML>) [0,0 800x114]
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PaintableWithLines (BlockContainer<BODY>) [8,8 784x98]
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PaintableWithLines (TableWrapper(anonymous)) [8,8 615.53125x98]
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PaintableBox (Box<TABLE>) [8,8 615.53125x98]
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PaintableBox (Box<TBODY>) [9,9 613.53125x96]
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PaintableBox (Box<TR>) [9,9 613.53125x48]
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PaintableWithLines (BlockContainer<TD>) [9,9 353.84375x48]
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TextPaintable (TextNode<#text>)
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PaintableWithLines (BlockContainer<TD>.small-text) [362.84375,9 259.6875x48]
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TextPaintable (TextNode<#text>)
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PaintableBox (Box<TR>) [9,57 613.53125x48]
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PaintableWithLines (BlockContainer<TD>) [9,57 353.84375x48]
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TextPaintable (TextNode<#text>)
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PaintableWithLines (BlockContainer<TD>) [362.84375,57 259.6875x48]
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TextPaintable (TextNode<#text>)
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PaintableWithLines (BlockContainer(anonymous)) [8,106 784x0]
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Tests/LibWeb/Layout/input/table/acid2-reduction.html
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Tests/LibWeb/Layout/input/table/acid2-reduction.html
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<!DOCTYPE html><style type="text/css">
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.table {
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display: table;
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}
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.second-part {
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display: table;
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height: 50px;
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width: 50px;
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background: black;
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}
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.third-part {
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display: table-cell;
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height: 50px;
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width: 50px;
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background: black;
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}
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</style></head><div class="table"><div class="second-part"></div><div class="third-part"></div></div>
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Tests/LibWeb/Layout/input/table/vertical-align-baseline.html
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Tests/LibWeb/Layout/input/table/vertical-align-baseline.html
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<!DOCTYPE html>
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<style>
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table, th, td {
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border: 1px solid black;
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border-collapse: collapse;
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}
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td {
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vertical-align: baseline;
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font-size: 40px;
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}
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.small-text {
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font-size: 10px;
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}
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</style>
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<table>
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<tr><td>Text baseline</td><td class="small-text">Smaller text</td></tr>
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<tr><td>Another baseline</td><td>Regular text</td></tr>
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</table>
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@ -1080,30 +1080,29 @@ void TableFormattingContext::position_cell_boxes()
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for (auto& cell : m_cells) {
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auto& cell_state = m_state.get_mutable(cell.box);
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auto& row_state = m_state.get(m_rows[cell.row_index].box);
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CSSPixels const cell_border_box_height = cell_state.content_height() + cell_state.border_box_top() + cell_state.border_box_bottom();
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CSSPixels const row_content_height = compute_row_content_height(cell);
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auto const row_content_height = compute_row_content_height(cell);
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auto const& vertical_align = cell.box->computed_values().vertical_align();
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// The following image shows various alignment lines of a row:
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// https://www.w3.org/TR/css-tables-3/images/cell-align-explainer.png
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if (vertical_align.has<CSS::VerticalAlign>()) {
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auto height_diff = row_content_height - cell_border_box_height;
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switch (vertical_align.get<CSS::VerticalAlign>()) {
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case CSS::VerticalAlign::Middle: {
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auto const height_diff = row_content_height - cell_state.border_box_height();
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cell_state.padding_top += height_diff / 2;
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cell_state.padding_bottom += height_diff / 2;
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break;
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}
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case CSS::VerticalAlign::Top: {
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cell_state.padding_bottom += height_diff;
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cell_state.padding_bottom += row_content_height - cell_state.border_box_height();
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break;
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}
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case CSS::VerticalAlign::Bottom: {
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cell_state.padding_top += height_diff;
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cell_state.padding_top += row_content_height - cell_state.border_box_height();
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break;
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}
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case CSS::VerticalAlign::Baseline: {
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cell_state.padding_top += m_rows[cell.row_index].baseline - cell.baseline;
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cell_state.padding_bottom += height_diff;
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cell_state.padding_bottom += row_content_height - cell_state.border_box_height();
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break;
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}
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case CSS::VerticalAlign::Sub: {
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