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LibHTML: Implement "text-align: justify"

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In order for this to work nicely, I made the line box classes use float
instead of int for its geometry information.

Justification works by distributing all of the whitespace on the line
(including the trailing whitespace before the line break) evenly across
the spaces in-between words.

We should probably use floating point (or maybe fixed point?) for all
the layout metrics stuff. But one thing at a time. :^)
This commit is contained in:
Andreas Kling 2019-10-20 12:30:25 +02:00
parent ea5da0f9b5
commit eb77e680ed
9 changed files with 72 additions and 25 deletions
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4
Libraries/LibHTML/Layout/LayoutNode.cpp
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@ -82,7 +82,7 @@ void LayoutNode::set_needs_display()
if (auto* block = containing_block()) {
block->for_each_fragment([&](auto& fragment) {
if (&fragment.layout_node() == this || is_ancestor_of(fragment.layout_node())) {
const_cast<Frame*>(frame)->set_needs_display(fragment.rect());
const_cast<Frame*>(frame)->set_needs_display(enclosing_int_rect(fragment.rect()));
}
return IterationDecision::Continue;
});
@ -98,7 +98,7 @@ Point LayoutNode::box_type_agnostic_position() const
if (auto* block = containing_block()) {
block->for_each_fragment([&](auto& fragment) {
if (&fragment.layout_node() == this || is_ancestor_of(fragment.layout_node())) {
position = fragment.rect().location();
position = enclosing_int_rect(fragment.rect()).location();
return IterationDecision::Break;
}
return IterationDecision::Continue;