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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.
68 lines
3 KiB
C++
68 lines
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/ResizeObserverSizePrototype.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/Painting/PaintableBox.h>
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#include <LibWeb/ResizeObserver/ResizeObserverSize.h>
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namespace Web::ResizeObserver {
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GC_DEFINE_ALLOCATOR(ResizeObserverSize);
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void ResizeObserverSize::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(ResizeObserverSize);
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Base::initialize(realm);
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}
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// https://drafts.csswg.org/resize-observer-1/#calculate-box-size
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GC::Ref<ResizeObserverSize> ResizeObserverSize::calculate_box_size(JS::Realm& realm, DOM::Element& target, Bindings::ResizeObserverBoxOptions observed_box)
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{
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// 1. Let computedSize be a new ResizeObserverSize object.
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auto computed_size = realm.create<ResizeObserverSize>(realm);
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// FIXME: 2. If target is an SVGGraphicsElement that does not have an associated CSS layout box:
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// Otherwise:
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if (target.paintable_box()) {
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auto const& paintable_box = *target.paintable_box();
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switch (observed_box) {
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case Bindings::ResizeObserverBoxOptions::BorderBox:
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// 1. Set computedSize’s inlineSize attribute to target’s border area inline length.
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computed_size->set_inline_size(paintable_box.border_box_width().to_double());
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// 2. Set computedSize’s blockSize attribute to target’s border area block length.
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computed_size->set_block_size(paintable_box.border_box_height().to_double());
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break;
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case Bindings::ResizeObserverBoxOptions::ContentBox:
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// 1. Set computedSize’s inlineSize attribute to target’s content area inline length.
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computed_size->set_inline_size(paintable_box.content_width().to_double());
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// 2. Set computedSize’s blockSize attribute to target’s content area block length.
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computed_size->set_block_size(paintable_box.content_height().to_double());
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break;
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case Bindings::ResizeObserverBoxOptions::DevicePixelContentBox: {
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auto device_pixel_ratio = target.document().window()->device_pixel_ratio();
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// 1. Set computedSize’s inlineSize attribute to target’s content area inline length, in integral device pixels.
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computed_size->set_inline_size(paintable_box.border_box_width().to_double() * device_pixel_ratio);
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// 2. Set computedSize’s blockSize attribute to target’s content area block length, in integral device pixels.
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computed_size->set_block_size(paintable_box.border_box_height().to_double() * device_pixel_ratio);
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break;
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}
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default:
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VERIFY_NOT_REACHED();
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}
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}
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// 3. Return computedSize.s
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return computed_size;
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}
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bool ResizeObserverSize::equals(ResizeObserverSize const& other) const
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{
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return m_inline_size == other.m_inline_size && m_block_size == other.m_block_size;
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}
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}
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