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fd0aa5dd43
We now create a layout tree directly from the DOM tree. This way we don't actually lose text nodes ^)
83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
#include <AK/Function.h>
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#include <LibHTML/CSS/StyleResolver.h>
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#include <LibHTML/DOM/Element.h>
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#include <LibHTML/Dump.h>
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#include <LibHTML/Frame.h>
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#include <LibHTML/Layout/LayoutBlock.h>
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#include <LibHTML/Layout/LayoutDocument.h>
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#include <LibHTML/Layout/LayoutInline.h>
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#include <stdio.h>
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Frame::Frame()
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: m_size(800, 600)
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{
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}
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Frame::~Frame()
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{
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}
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void Frame::set_document(Document* document)
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{
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m_document = document;
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}
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RefPtr<LayoutNode> Frame::generate_layout_tree()
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{
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auto resolver = m_document->style_resolver();
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auto create_layout_node = [&](const Node& node) -> RefPtr<LayoutNode> {
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if (node.is_document())
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return adopt(*new LayoutDocument(static_cast<const Document&>(node), {}));
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auto style_properties = resolver.resolve_style(static_cast<const Element&>(node));
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auto display_property = style_properties.property("display");
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String display = display_property.has_value() ? display_property.release_value()->to_string() : "inline";
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if (display == "none")
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return nullptr;
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if (display == "block")
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return adopt(*new LayoutBlock(&node, move(style_properties)));
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if (display == "inline")
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return adopt(*new LayoutInline(node, move(style_properties)));
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ASSERT_NOT_REACHED();
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};
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Function<RefPtr<LayoutNode>(const Node&)> build_layout_tree;
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build_layout_tree = [&](const Node& node) -> RefPtr<LayoutNode> {
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auto layout_node = create_layout_node(node);
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if (!layout_node)
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return nullptr;
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if (!node.has_children())
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return layout_node;
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static_cast<const ParentNode&>(node).for_each_child([&](const Node& child) {
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auto layout_child = build_layout_tree(child);
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if (!layout_child)
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return;
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if (layout_child->is_inline())
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layout_node->inline_wrapper().append_child(*layout_child);
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else
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layout_node->append_child(*layout_child);
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});
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return layout_node;
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};
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return build_layout_tree(*m_document);
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}
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void Frame::layout()
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{
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if (!m_document)
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return;
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auto layout_root = generate_layout_tree();
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layout_root->style().size().set_width(m_size.width());
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printf("\033[33;1mLayout tree before layout:\033[0m\n");
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dump_tree(*layout_root);
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layout_root->layout();
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printf("\033[33;1mLayout tree after layout:\033[0m\n");
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dump_tree(*layout_root);
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}
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