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https://github.com/LadybirdBrowser/ladybird.git
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a6dfc74e93
Before this change, we were going through the chain of base classes for each IDL interface object and having them set the prototype to their prototype. Instead of doing that, reorder things so that we set the right prototype immediately in Foo::initialize(), and then don't bother in all the base class overrides. This knocks off a ~1% profile item on Speedometer 3.
103 lines
4.3 KiB
C++
103 lines
4.3 KiB
C++
/*
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* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGC/Heap.h>
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#include <LibWeb/Bindings/ExceptionOrUtils.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/ResizeObserverEntryPrototype.h>
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#include <LibWeb/Painting/PaintableBox.h>
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#include <LibWeb/ResizeObserver/ResizeObserverEntry.h>
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namespace Web::ResizeObserver {
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GC_DEFINE_ALLOCATOR(ResizeObserverEntry);
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// https://drafts.csswg.org/resize-observer-1/#create-and-populate-resizeobserverentry-h
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WebIDL::ExceptionOr<GC::Ref<ResizeObserverEntry>> ResizeObserverEntry::create_and_populate(JS::Realm& realm, DOM::Element& target)
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{
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// 1. Let this be a new ResizeObserverEntry.
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// 2. Set this.target slot to target.
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auto resize_observer_entry = realm.create<ResizeObserverEntry>(realm, target);
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// 3. Set this.borderBoxSize slot to result of calculating box size given target and observedBox of "border-box".
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auto border_box_size = ResizeObserverSize::calculate_box_size(realm, target, Bindings::ResizeObserverBoxOptions::BorderBox);
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resize_observer_entry->m_border_box_size.append(border_box_size);
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// 4. Set this.contentBoxSize slot to result of calculating box size given target and observedBox of "content-box".
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auto content_box_size = ResizeObserverSize::calculate_box_size(realm, target, Bindings::ResizeObserverBoxOptions::ContentBox);
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resize_observer_entry->m_content_box_size.append(content_box_size);
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// 5. Set this.devicePixelContentBoxSize slot to result of calculating box size given target and observedBox of "device-pixel-content-box".
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auto device_pixel_content_box_size = ResizeObserverSize::calculate_box_size(realm, target, Bindings::ResizeObserverBoxOptions::DevicePixelContentBox);
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resize_observer_entry->m_device_pixel_content_box_size.append(device_pixel_content_box_size);
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// 6. Set this.contentRect to logical this.contentBoxSize given target and observedBox of "content-box".
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double x = 0;
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double y = 0;
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double width = content_box_size->inline_size();
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double height = content_box_size->block_size();
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// 7. If target is not an SVG element or target is an SVG element with an associated CSS layout box do these steps:
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if (!target.is_svg_element() && target.paintable_box()) {
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auto const& paintable_box = *target.paintable_box();
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auto absolute_padding_rect = paintable_box.absolute_padding_box_rect();
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// Set this.contentRect.top to target.padding top.
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y = absolute_padding_rect.y().to_double();
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// Set this.contentRect.left to target.padding left.
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x = absolute_padding_rect.x().to_double();
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} else if (target.is_svg_element() && target.paintable_box()) {
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// 8. If target is an SVG element without an associated CSS layout box do these steps:
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// Set this.contentRect.top and this.contentRect.left to 0.
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// NOTE: This is already done by the default constructor.
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}
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resize_observer_entry->m_content_rect = MUST(Geometry::DOMRectReadOnly::construct_impl(realm, x, y, width, height));
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return resize_observer_entry;
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}
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void ResizeObserverEntry::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(ResizeObserverEntry);
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Base::initialize(realm);
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}
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void ResizeObserverEntry::visit_edges(JS::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_target);
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visitor.visit(m_content_box_size);
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visitor.visit(m_border_box_size);
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visitor.visit(m_device_pixel_content_box_size);
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visitor.visit(m_content_rect);
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}
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static GC::Ref<JS::Object> to_js_array(JS::Realm& realm, Vector<GC::Ref<ResizeObserverSize>> const& sizes)
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{
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GC::RootVector<JS::Value> vector(realm.heap());
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for (auto const& size : sizes)
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vector.append(JS::Value(size.ptr()));
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auto array = JS::Array::create_from(realm, vector);
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MUST(array->set_integrity_level(JS::Object::IntegrityLevel::Frozen));
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return array;
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}
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GC::Ref<JS::Object> ResizeObserverEntry::border_box_size_js_array() const
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{
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return to_js_array(realm(), m_border_box_size);
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}
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GC::Ref<JS::Object> ResizeObserverEntry::content_box_size_js_array() const
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{
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return to_js_array(realm(), m_content_box_size);
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}
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GC::Ref<JS::Object> ResizeObserverEntry::device_pixel_content_box_size_js_array() const
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{
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return to_js_array(realm(), m_device_pixel_content_box_size);
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}
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}
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