143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
#include <LibGUI/GApplication.h>
|
|
#include <LibGUI/GPainter.h>
|
|
#include <LibGUI/GScrollBar.h>
|
|
#include <LibHTML/DOM/Element.h>
|
|
#include <LibHTML/DOM/HTMLAnchorElement.h>
|
|
#include <LibHTML/Dump.h>
|
|
#include <LibHTML/HtmlView.h>
|
|
#include <LibHTML/Layout/LayoutNode.h>
|
|
#include <LibHTML/RenderingContext.h>
|
|
#include <stdio.h>
|
|
|
|
HtmlView::HtmlView(GWidget* parent)
|
|
: GScrollableWidget(parent)
|
|
{
|
|
set_frame_shape(FrameShape::Container);
|
|
set_frame_shadow(FrameShadow::Sunken);
|
|
set_frame_thickness(2);
|
|
set_should_hide_unnecessary_scrollbars(true);
|
|
set_background_color(Color::White);
|
|
}
|
|
|
|
void HtmlView::set_document(Document* document)
|
|
{
|
|
if (document == m_document)
|
|
return;
|
|
m_document = document;
|
|
|
|
if (document == nullptr)
|
|
m_layout_root = nullptr;
|
|
else
|
|
m_layout_root = document->create_layout_tree(document->style_resolver(), nullptr);
|
|
|
|
#ifdef HTML_DEBUG
|
|
if (document != nullptr) {
|
|
dbgprintf("\033[33;1mLayout tree before layout:\033[0m\n");
|
|
::dump_tree(*m_layout_root);
|
|
}
|
|
#endif
|
|
|
|
layout_and_sync_size();
|
|
update();
|
|
}
|
|
|
|
void HtmlView::layout_and_sync_size()
|
|
{
|
|
if (!m_layout_root)
|
|
return;
|
|
|
|
m_layout_root->style().size().set_width(available_size().width());
|
|
m_layout_root->layout();
|
|
set_content_size(m_layout_root->rect().size());
|
|
|
|
#ifdef HTML_DEBUG
|
|
dbgprintf("\033[33;1mLayout tree after layout:\033[0m\n");
|
|
::dump_tree(*m_layout_root);
|
|
#endif
|
|
}
|
|
|
|
void HtmlView::resize_event(GResizeEvent& event)
|
|
{
|
|
GScrollableWidget::resize_event(event);
|
|
layout_and_sync_size();
|
|
}
|
|
|
|
void HtmlView::paint_event(GPaintEvent& event)
|
|
{
|
|
GFrame::paint_event(event);
|
|
|
|
GPainter painter(*this);
|
|
painter.add_clip_rect(widget_inner_rect());
|
|
painter.add_clip_rect(event.rect());
|
|
|
|
painter.fill_rect(event.rect(), background_color());
|
|
|
|
painter.translate(frame_thickness(), frame_thickness());
|
|
painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
|
|
|
|
if (!m_layout_root)
|
|
return;
|
|
|
|
RenderingContext context { painter };
|
|
m_layout_root->render(context);
|
|
}
|
|
|
|
void HtmlView::mousemove_event(GMouseEvent& event)
|
|
{
|
|
if (!m_layout_root)
|
|
return GScrollableWidget::mousemove_event(event);
|
|
|
|
bool hovered_node_changed = false;
|
|
auto result = m_layout_root->hit_test(to_content_position(event.position()));
|
|
if (result.layout_node) {
|
|
auto* node = result.layout_node->node();
|
|
hovered_node_changed = node != m_document->hovered_node();
|
|
m_document->set_hovered_node(const_cast<Node*>(node));
|
|
#ifdef HTML_DEBUG
|
|
if (node) {
|
|
dbg() << "HtmlView: mousemove: " << node->tag_name() << "{" << node << "}";
|
|
if (auto* link = node->enclosing_link_element()) {
|
|
dbg() << "HtmlView: hovering over a link to " << link->href();
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
if (hovered_node_changed) {
|
|
update();
|
|
auto* hovered_html_element = m_document->hovered_node() ? m_document->hovered_node()->enclosing_html_element() : nullptr;
|
|
if (hovered_html_element && !hovered_html_element->title().is_null()) {
|
|
auto screen_position = screen_relative_rect().location().translated(event.position());
|
|
GApplication::the().show_tooltip(hovered_html_element->title(), screen_position.translated(4, 4));
|
|
} else {
|
|
GApplication::the().hide_tooltip();
|
|
}
|
|
}
|
|
event.accept();
|
|
}
|
|
|
|
void HtmlView::mousedown_event(GMouseEvent& event)
|
|
{
|
|
if (!m_layout_root)
|
|
return GScrollableWidget::mousemove_event(event);
|
|
|
|
bool hovered_node_changed = false;
|
|
auto result = m_layout_root->hit_test(to_content_position(event.position()));
|
|
if (result.layout_node) {
|
|
auto* node = result.layout_node->node();
|
|
hovered_node_changed = node != m_document->hovered_node();
|
|
m_document->set_hovered_node(const_cast<Node*>(node));
|
|
if (node) {
|
|
#ifdef HTML_DEBUG
|
|
dbg() << "HtmlView: mousedown: " << node->tag_name() << "{" << node << "}";
|
|
#endif
|
|
if (auto* link = node->enclosing_link_element()) {
|
|
dbg() << "HtmlView: clicking on a link to " << link->href();
|
|
if (on_link_click)
|
|
on_link_click(link->href());
|
|
}
|
|
}
|
|
}
|
|
if (hovered_node_changed)
|
|
update();
|
|
event.accept();
|
|
}
|