ladybird/Libraries/LibHTML/Layout/LayoutNode.cpp
Andreas Kling 3de4b99dc3 LibHTML: Implement naive hit testing
We don't have proper line boxes yet, so we can't easily hit test
inline text.
2019-09-28 23:04:59 +02:00

50 lines
1.2 KiB
C++

#include <LibHTML/DOM/Element.h>
#include <LibHTML/Layout/LayoutBlock.h>
#include <LibHTML/Layout/LayoutNode.h>
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)
{
// TODO: render our background and border
for_each_child([&](auto& child) {
child.render(context);
});
}
HitTestResult LayoutNode::hit_test(const Point& position) const
{
if (!m_rect.contains(position))
return {};
HitTestResult result { this };
for_each_child([&](auto& child) {
auto child_result = child.hit_test(position);
if (child_result.layout_node)
result = child_result;
});
return result;
}