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- #include <LibGUI/GPainter.h>
- #include <LibHTML/DOM/Document.h>
- #include <LibHTML/DOM/Element.h>
- #include <LibHTML/Layout/LayoutBlock.h>
- #include <LibHTML/Layout/LayoutNode.h>
- //#define DRAW_BOXES_AROUND_LAYOUT_NODES
- //#define DRAW_BOXES_AROUND_HOVERED_NODES
- LayoutNode::LayoutNode(const Node* node, StyleProperties&& style_properties)
- : m_node(node)
- , m_style_properties(style_properties)
- {
- }
- LayoutNode::~LayoutNode()
- {
- }
- void LayoutNode::layout()
- {
- for_each_child([](auto& child) {
- child.layout();
- });
- }
- const LayoutBlock* LayoutNode::containing_block() const
- {
- for (auto* ancestor = parent(); ancestor; ancestor = ancestor->parent()) {
- if (ancestor->is_block())
- return static_cast<const LayoutBlock*>(ancestor);
- }
- return nullptr;
- }
- void LayoutNode::render(RenderingContext& context)
- {
- #ifdef DRAW_BOXES_AROUND_LAYOUT_NODES
- context.painter().draw_rect(m_rect, Color::Blue);
- #endif
- #ifdef DRAW_BOXES_AROUND_HOVERED_NODES
- if (!is_anonymous() && node() == document().hovered_node())
- context.painter().draw_rect(m_rect, Color::Red);
- #endif
- auto bgcolor = style_properties().property("background-color");
- if (bgcolor.has_value() && bgcolor.value()->is_color()) {
- Rect background_rect;
- background_rect.set_x(rect().x() - style().padding().left.to_px());
- background_rect.set_width(rect().width() + style().padding().left.to_px() + style().padding().right.to_px());
- background_rect.set_y(rect().y() - style().padding().top.to_px());
- background_rect.set_height(rect().height() + style().padding().top.to_px() + style().padding().bottom.to_px());
- context.painter().fill_rect(background_rect, bgcolor.value()->to_color());
- }
- // TODO: render our border
- for_each_child([&](auto& child) {
- child.render(context);
- });
- }
- HitTestResult LayoutNode::hit_test(const Point& position) const
- {
- // FIXME: It would be nice if we could confidently skip over hit testing
- // parts of the layout tree, but currently we can't just check
- // m_rect.contains() since inline text rects can't be trusted..
- HitTestResult result { m_rect.contains(position) ? this : nullptr };
- for_each_child([&](auto& child) {
- auto child_result = child.hit_test(position);
- if (child_result.layout_node)
- result = child_result;
- });
- return result;
- }
- const Document& LayoutNode::document() const
- {
- if (is_anonymous())
- return parent()->document();
- return node()->document();
- }
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