Andreas Kling f2a917229a LibWeb: Support inline-level padding and border properly ...

Here's roughly how this works:

- InlineLevelIterator keeps a nesting stack of inline-level nodes with
  box model metrics.
- When entering a node with box model metrics, we add them to the
  current "leading metrics".
- When exiting a node with box model metrics, we add them to the
  current "trailing metrics".
- Pending leading metrics are consumed by the first fragment added
  to the line.
- Pending trailing metrics are consumed by the last fragment added
  to the line.

Like before, the position of a line box fragment is the top left of its
content box. However, fragments are placed horizontally along the line
with space inserted for padding and border.

InlineNode::paint() now expands the content rect as appropriate when
painting background and borders.

Note that margins and margin collapsing is not yet implemented.

This makes the eyes on ACID2 horizontally centered. :^)

2022-02-14 18:00:21 +01:00

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