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Reconstruct the box tree incrementally in some case

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This commit is contained in:
Anthony Ramine 2020-06-01 16:06:07 +02:00
parent c4ea4b1d77
commit a30bdc16dd
2 changed files with 157 additions and 15 deletions
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32
components/layout_thread_2020/lib.rs
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@ -1081,39 +1081,43 @@ impl LayoutThread {
let rayon_pool = STYLE_THREAD_POOL.pool();
let rayon_pool = rayon_pool.as_ref();
let box_tree = if token.should_traverse() {
driver::traverse_dom(&traversal, token, rayon_pool);
if token.should_traverse() {
let dirty_root = driver::traverse_dom(&traversal, token, rayon_pool).as_node();
let root_node = root_element.as_node();
let build_box_tree = || BoxTree::construct(traversal.context(), root_node);
let box_tree = if let Some(pool) = rayon_pool {
let mut box_tree = self.box_tree.borrow_mut();
let box_tree = &mut *box_tree;
let mut build_box_tree = || {
if !BoxTree::update(traversal.context(), dirty_root) {
*box_tree = Some(Arc::new(BoxTree::construct(traversal.context(), root_node)));
}
};
if let Some(pool) = rayon_pool {
pool.install(build_box_tree)
} else {
build_box_tree()
};
Some(Arc::new(box_tree))
} else {
None
};
layout_context = traversal.destroy();
if let Some(box_tree) = box_tree {
let viewport_size = Size2D::new(
self.viewport_size.width.to_f32_px(),
self.viewport_size.height.to_f32_px(),
);
let run_layout = || box_tree.layout(&layout_context, viewport_size);
let run_layout = || {
box_tree
.as_ref()
.unwrap()
.layout(traversal.context(), viewport_size)
};
let fragment_tree = Arc::new(if let Some(pool) = rayon_pool {
pool.install(run_layout)
} else {
run_layout()
});
*self.box_tree.borrow_mut() = Some(box_tree);
*self.fragment_tree.borrow_mut() = Some(fragment_tree);
}
layout_context = traversal.destroy();
for element in elements_with_snapshot {
unsafe { element.unset_snapshot_flags() }
}