101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
#include <LibGUI/GPainter.h>
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#include <LibGUI/GScrollBar.h>
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#include <LibHTML/DOM/Element.h>
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#include <LibHTML/Dump.h>
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#include <LibHTML/HtmlView.h>
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#include <LibHTML/Layout/LayoutNode.h>
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#include <LibHTML/RenderingContext.h>
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#include <stdio.h>
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HtmlView::HtmlView(GWidget* parent)
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: GScrollableWidget(parent)
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{
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set_frame_shape(FrameShape::Container);
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set_frame_shadow(FrameShadow::Sunken);
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set_frame_thickness(2);
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set_should_hide_unnecessary_scrollbars(true);
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set_background_color(Color::White);
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}
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void HtmlView::set_document(Document* document)
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{
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if (document == m_document)
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return;
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m_document = document;
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if (document == nullptr)
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m_layout_root = nullptr;
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else
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m_layout_root = document->create_layout_tree(document->style_resolver(), nullptr);
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#ifdef HTML_DEBUG
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if (document != nullptr) {
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printf("\033[33;1mLayout tree before layout:\033[0m\n");
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::dump_tree(*m_layout_root);
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}
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#endif
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layout_and_sync_size();
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update();
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}
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void HtmlView::layout_and_sync_size()
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{
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if (!m_layout_root)
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return;
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m_layout_root->style().size().set_width(available_size().width());
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m_layout_root->layout();
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set_content_size(m_layout_root->rect().size());
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#ifdef HTML_DEBUG
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printf("\033[33;1mLayout tree after layout:\033[0m\n");
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::dump_tree(*m_layout_root);
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#endif
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}
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void HtmlView::resize_event(GResizeEvent& event)
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{
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GScrollableWidget::resize_event(event);
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layout_and_sync_size();
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}
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void HtmlView::paint_event(GPaintEvent& event)
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{
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GFrame::paint_event(event);
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GPainter painter(*this);
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painter.add_clip_rect(widget_inner_rect());
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painter.add_clip_rect(event.rect());
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painter.fill_rect(event.rect(), background_color());
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painter.translate(frame_thickness(), frame_thickness());
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painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
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if (!m_layout_root)
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return;
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RenderingContext context { painter };
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m_layout_root->render(context);
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}
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void HtmlView::mousemove_event(GMouseEvent& event)
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{
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if (!m_layout_root)
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return GScrollableWidget::mousemove_event(event);
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bool hovered_node_changed = false;
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auto result = m_layout_root->hit_test(event.position());
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if (result.layout_node) {
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auto* node = result.layout_node->node();
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m_document->set_hovered_node(const_cast<Node*>(node));
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hovered_node_changed = node == m_document->hovered_node();
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if (node) {
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dbg() << "HtmlView: mousemove: " << node->tag_name() << "{" << node << "}";
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}
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}
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if (hovered_node_changed)
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update();
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event.accept();
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}
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