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LibWebView+WebConent: Add an IPC to get an element's absolute rect

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Timothy Flynn 2022-11-03 12:51:44 -04:00 • committed by Linus Groh
parent 77b6d0bf16
commit 995f3db384
5 changed files with 40 additions and 0 deletions
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31
Userland/Services/WebContent/ConnectionFromClient.cpp
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@ -24,6 +24,7 @@
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/NodeList.h>
#include <LibWeb/Dump.h>
#include <LibWeb/Geometry/DOMRect.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/HTML/Scripting/ClassicScript.h>
#include <LibWeb/HTML/Storage.h>
@ -585,6 +586,36 @@ Messages::WebContentServer::GetElementTagNameResponse ConnectionFromClient::get_
return { element->tag_name() };
}
// https://w3c.github.io/webdriver/#dfn-calculate-the-absolute-position
static Gfx::IntPoint calculate_absolute_position_of_element(Web::Page const& page, JS::NonnullGCPtr<Web::Geometry::DOMRect> rect)
{
// 1. Let rect be the value returned by calling getBoundingClientRect().
// 2. Let window be the associated window of current top-level browsing context.
auto const* window = page.top_level_browsing_context().active_window();
// 3. Let x be (scrollX of window + rect’s x coordinate).
auto x = (window ? static_cast<int>(window->scroll_x()) : 0) + static_cast<int>(rect->x());
// 4. Let y be (scrollY of window + rect’s y coordinate).
auto y = (window ? static_cast<int>(window->scroll_y()) : 0) + static_cast<int>(rect->y());
// 5. Return a pair of (x, y).
return { x, y };
}
Messages::WebContentServer::GetElementRectResponse ConnectionFromClient::get_element_rect(i32 element_id)
{
auto element = find_element_by_id(element_id);
if (!element.has_value())
return { {} };
auto bounding_rect = element->get_bounding_client_rect();
auto coordinates = calculate_absolute_position_of_element(page(), bounding_rect);
return { { coordinates.x(), coordinates.y(), static_cast<int>(bounding_rect->width()), static_cast<int>(bounding_rect->height()) } };
}
Messages::WebContentServer::GetSelectedTextResponse ConnectionFromClient::get_selected_text()
{
return page().focused_context().selected_text();