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LibHTML: Refactor to go from DOM -> styled tree -> layout tree.

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Frame::layout() drives everything now, it takes the DOM contained in the
frame and puts it through the tree transformations.
This commit is contained in:
Andreas Kling 2019-06-29 21:42:07 +02:00
parent 6e95b11395
commit 7eef69ad4b
20 changed files with 132 additions and 131 deletions
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31
LibHTML/DOM/Document.cpp
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@ -1,3 +1,4 @@
#include <LibHTML/CSS/StyleResolver.h>
#include <LibHTML/DOM/Document.h>
#include <LibHTML/DOM/Element.h>
#include <LibHTML/Layout/LayoutDocument.h>
@ -12,31 +13,9 @@ Document::~Document()
{
}
static void create_layout_tree_for_node(Node& node)
StyleResolver& Document::style_resolver()
{
if (auto layout_node = node.create_layout_node()) {
node.set_layout_node(*layout_node);
#ifdef DEBUG_LAYOUT_TREE_BUILD
if (node.is_element()) {
printf("created layout node for <%s>, parent is %p, parent ln is %p\n", static_cast<const Element&>(node).tag_name().characters(), node.parent_node(), node.parent_node()->layout_node());
}
#endif
if (node.parent() && node.parent()->layout_node())
node.parent()->layout_node()->append_child(*layout_node);
}
if (node.is_parent_node()) {
static_cast<ParentNode&>(node).for_each_child([&](auto& child) {
create_layout_tree_for_node(child);
});
}
}
void Document::build_layout_tree()
{
create_layout_tree_for_node(*this);
}
RefPtr<LayoutNode> Document::create_layout_node()
{
return adopt(*new LayoutDocument(*this));
if (!m_style_resolver)
m_style_resolver = make<StyleResolver>(*this);
return *m_style_resolver;
}