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LibHTML: Add function for invalidating the document layout

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This allows any external actor to signal that the document layout may be
stale. This can be used when loading resources, changing the size or
placement of an element, adding/removing nodes, or really any time.
This commit is contained in:
Conrad Pankoff 2019-10-06 22:58:18 +11:00 • committed by Andreas Kling
parent 15a016d3e3
commit ef8b754a46
Notes: sideshowbarker 2024-07-19 11:47:38 +09:00
3 changed files with 15 additions and 0 deletions
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6
Libraries/LibHTML/DOM/Document.cpp
View file

@ -126,6 +126,12 @@ URL Document::complete_url(const String& string) const
return url;
}
void Document::invalidate_layout()
{
if (on_invalidate_layout)
on_invalidate_layout();
}
RefPtr<LayoutNode> Document::create_layout_node(const StyleResolver&, const StyleProperties*) const
{
return adopt(*new LayoutDocument(*this, StyleProperties::create()));

4
Libraries/LibHTML/DOM/Document.h
View file

@ -1,5 +1,6 @@
#pragma once
#include <AK/Function.h>
#include <AK/NonnullRefPtrVector.h>
#include <AK/OwnPtr.h>
#include <AK/String.h>
@ -63,6 +64,9 @@ public:
Color visited_link_color() const { return m_visited_link_color; }
void set_visited_link_color(Color);
void invalidate_layout();
Function<void()> on_invalidate_layout;
private:
virtual RefPtr<LayoutNode> create_layout_node(const StyleResolver&, const StyleProperties* parent_properties) const override;

5
Libraries/LibHTML/HtmlView.cpp
View file

@ -31,7 +31,12 @@ void HtmlView::set_document(Document* document)
{
if (document == m_document)
return;
if (m_document)
m_document->on_invalidate_layout = nullptr;
m_document = document;
m_document->on_invalidate_layout = [this]() { layout_and_sync_size(); };
main_frame().set_document(document);