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Auto merge of #13192 - notriddle:master, r=pcwalton

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Account for percentages in fixed table layout

Don't just use the minimum length all the time.

---

- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #13166 (github issue number if applicable).
- [X] There are tests for these changes

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This commit is contained in:
bors-servo 2016-09-08 23:17:06 -05:00 • committed by GitHub
commit 2d13178d29
5 changed files with 72 additions and 18 deletions
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43
components/layout/table.rs
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@ -335,13 +335,17 @@ impl Flow for TableFlow {
let containing_block_inline_size = self.block_flow.base.block_container_inline_size;
let mut num_unspecified_inline_sizes = 0;
let mut num_percentage_inline_sizes = 0;
let mut total_column_inline_size = Au(0);
let mut total_column_percentage_size = 0.0;
for column_inline_size in &self.column_intrinsic_inline_sizes {
if column_inline_size.constrained {
total_column_inline_size = total_column_inline_size +
column_inline_size.minimum_length
if column_inline_size.percentage != 0.0 {
total_column_percentage_size += column_inline_size.percentage;
num_percentage_inline_sizes += 1;
} else if column_inline_size.constrained {
total_column_inline_size += column_inline_size.minimum_length;
} else {
num_unspecified_inline_sizes += 1
num_unspecified_inline_sizes += 1;
}
}
@ -364,20 +368,12 @@ impl Flow for TableFlow {
TableLayout::Fixed => {
// In fixed table layout, we distribute extra space among the unspecified columns
// if there are any, or among all the columns if all are specified.
// See: https://drafts.csswg.org/css-tables-3/#distributing-width-to-columns (infobox)
self.column_computed_inline_sizes.clear();
if num_unspecified_inline_sizes == 0 {
let ratio = content_inline_size.to_f32_px() /
total_column_inline_size.to_f32_px();
for column_inline_size in &self.column_intrinsic_inline_sizes {
self.column_computed_inline_sizes.push(ColumnComputedInlineSize {
size: column_inline_size.minimum_length.scale_by(ratio),
});
}
} else if num_unspecified_inline_sizes != 0 {
if num_unspecified_inline_sizes != 0 {
let extra_column_inline_size = content_inline_size - total_column_inline_size;
for column_inline_size in &self.column_intrinsic_inline_sizes {
if !column_inline_size.constrained &&
column_inline_size.percentage == 0.0 {
if !column_inline_size.constrained {
self.column_computed_inline_sizes.push(ColumnComputedInlineSize {
size: extra_column_inline_size / num_unspecified_inline_sizes,
});
@ -387,6 +383,23 @@ impl Flow for TableFlow {
});
}
}
} else if num_percentage_inline_sizes != 0 {
let extra_column_inline_size = content_inline_size - total_column_inline_size;
let ratio = content_inline_size.to_f32_px() /
total_column_percentage_size;
for column_inline_size in &self.column_intrinsic_inline_sizes {
self.column_computed_inline_sizes.push(ColumnComputedInlineSize {
size: extra_column_inline_size.scale_by(ratio * column_inline_size.percentage),
});
}
} else {
let ratio = content_inline_size.to_f32_px() /
total_column_inline_size.to_f32_px();
for column_inline_size in &self.column_intrinsic_inline_sizes {
self.column_computed_inline_sizes.push(ColumnComputedInlineSize {
size: column_inline_size.minimum_length.scale_by(ratio),
});
}
}
}
_ => {