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