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LibWeb: Expose the HTMLElement::{offsetLeft, offsetTop} attributes

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These describe the border box of an element relative to their parent.
This commit is contained in:
Idan Horowitz 2021-04-15 20:48:55 +03:00 • committed by Andreas Kling
parent c5769a7033
commit 815934a95d
3 changed files with 25 additions and 1 deletions
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20
Userland/Libraries/LibWeb/HTML/HTMLElement.cpp
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@ -27,13 +27,13 @@
#include <AK/StringBuilder.h>
#include <LibJS/Interpreter.h>
#include <LibJS/Parser.h>
#include <LibJS/Runtime/ScriptFunction.h>
#include <LibWeb/DOM/DOMException.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/EventListener.h>
#include <LibWeb/DOM/ExceptionOr.h>
#include <LibWeb/HTML/EventHandler.h>
#include <LibWeb/HTML/HTMLAnchorElement.h>
#include <LibWeb/HTML/HTMLBodyElement.h>
#include <LibWeb/HTML/HTMLElement.h>
#include <LibWeb/Layout/BreakNode.h>
#include <LibWeb/Layout/TextNode.h>
@ -141,6 +141,24 @@ String HTMLElement::inner_text()
return builder.to_string();
}
unsigned HTMLElement::offset_top() const
{
if (is<HTML::HTMLBodyElement>(this) || !layout_node() || !parent_element() || !parent_element()->layout_node())
return 0;
auto position = layout_node()->box_type_agnostic_position();
auto parent_position = parent_element()->layout_node()->box_type_agnostic_position();
return position.y() - parent_position.y();
}
unsigned HTMLElement::offset_left() const
{
if (is<HTML::HTMLBodyElement>(this) || !layout_node() || !parent_element() || !parent_element()->layout_node())
return 0;
auto position = layout_node()->box_type_agnostic_position();
auto parent_position = parent_element()->layout_node()->box_type_agnostic_position();
return position.x() - parent_position.x();
}
bool HTMLElement::cannot_navigate() const
{
// FIXME: Return true if element's node document is not fully active