9808d35554
This patch implements basic support for presentational hints, which are old-school HTML attributes that affect style. You add support for a presentational hint attribute by overriding Element::apply_presentational_hints(StyleProperties&) and setting all of the corresponding CSS properties as appropriate. To make the background color fill the entire document, not just the bounds of the <body> element's LayoutNode, we special-case it in the HtmlView::paint_event() code for now. I'm not entirely sure what the nicest solution would be, but I'm sure we'll discover it eventually.
101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
#include <LibHTML/CSS/StyleResolver.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/DOM/HTMLBodyElement.h>
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#include <LibHTML/DOM/HTMLHeadElement.h>
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#include <LibHTML/DOM/HTMLHtmlElement.h>
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#include <LibHTML/DOM/HTMLTitleElement.h>
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#include <LibHTML/Frame.h>
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#include <LibHTML/Layout/LayoutDocument.h>
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#include <stdio.h>
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Document::Document()
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: ParentNode(*this, NodeType::DOCUMENT_NODE)
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{
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}
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Document::~Document()
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{
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}
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StyleResolver& Document::style_resolver()
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{
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if (!m_style_resolver)
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m_style_resolver = make<StyleResolver>(*this);
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return *m_style_resolver;
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}
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void Document::normalize()
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{
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if (first_child() != nullptr && first_child()->is_element()) {
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const Element& el = static_cast<const Element&>(*first_child());
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if (el.tag_name() == "html")
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return;
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}
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NonnullRefPtr<Element> body = adopt(*new Element(*this, "body"));
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NonnullRefPtr<Element> html = adopt(*new Element(*this, "html"));
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html->append_child(body);
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this->donate_all_children_to(body);
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this->append_child(html);
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}
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const HTMLHtmlElement* Document::document_element() const
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{
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return static_cast<const HTMLHtmlElement*>(first_child_with_tag_name("html"));
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}
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const HTMLHeadElement* Document::head() const
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{
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auto* html = document_element();
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if (!html)
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return nullptr;
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return static_cast<const HTMLHeadElement*>(html->first_child_with_tag_name("head"));
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}
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const HTMLBodyElement* Document::body() const
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{
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auto* html = document_element();
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if (!html)
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return nullptr;
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return static_cast<const HTMLBodyElement*>(html->first_child_with_tag_name("body"));
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}
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String Document::title() const
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{
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auto* head_element = head();
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if (!head_element)
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return {};
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auto* title_element = static_cast<const HTMLTitleElement*>(head_element->first_child_with_tag_name("title"));
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if (!title_element)
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return {};
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return title_element->text_content();
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}
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void Document::attach_to_frame(Badge<Frame>, Frame& frame)
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{
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m_frame = frame.make_weak_ptr();
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}
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void Document::detach_from_frame(Badge<Frame>, Frame&)
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{
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}
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Color Document::background_color() const
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{
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auto* body_element = body();
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if (!body_element)
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return Color::White;
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auto* body_layout_node = body_element->layout_node();
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if (!body_layout_node)
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return Color::White;
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auto background_color = body_layout_node->style().property("background-color");
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if (!background_color.has_value() || !background_color.value()->is_color())
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return Color::White;
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return background_color.value()->to_color();
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}
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