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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.
143 lines
5.1 KiB
C++
143 lines
5.1 KiB
C++
/*
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* Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/WebVTT/VTTCue.h>
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namespace Web::WebVTT {
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GC_DEFINE_ALLOCATOR(VTTCue);
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// https://w3c.github.io/webvtt/#dom-vttcue-vttcue
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WebIDL::ExceptionOr<GC::Ref<VTTCue>> VTTCue::construct_impl(JS::Realm& realm, double start_time, double end_time, String const& text)
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{
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// 1. Create a new WebVTT cue. Let cue be that WebVTT cue.
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auto cue = realm.create<VTTCue>(realm, nullptr);
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// 2. Let cue’s text track cue start time be the value of the startTime argument.
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cue->m_start_time = start_time;
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// 3. If the value of the endTime argument is negative Infinity or a Not-a-Number (NaN) value, then throw a TypeError exception.
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// Otherwise, let cue’s text track cue end time be the value of the endTime argument.
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if (end_time == -AK::Infinity<double> || isnan(end_time))
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "End time is negative infinity or NaN"_string };
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cue->m_end_time = end_time;
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// 4. Let cue’s cue text be the value of the text argument, and let the rules for extracting the chapter title be the WebVTT rules
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// for extracting the chapter title.
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cue->m_text = text;
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// FIXME: let the rules for extracting the chapter title be the WebVTT rules for extracting the chapter title.
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// 5. Let cue’s text track cue identifier be the empty string.
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cue->m_identifier = ""_string;
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// 6. Let cue’s text track cue pause-on-exit flag be false.
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cue->m_pause_on_exit = false;
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// 7. Let cue’s WebVTT cue region be null.
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cue->m_region = nullptr;
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// 8. Let cue’s WebVTT cue writing direction be horizontal.
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cue->m_writing_direction = WritingDirection::Horizontal;
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// 9. Let cue’s WebVTT cue snap-to-lines flag be true.
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cue->m_snap_to_lines = true;
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// FIXME: 10. Let cue’s WebVTT cue line be auto.
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// 11. Let cue’s WebVTT cue line alignment be start alignment.
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cue->m_line_alignment = Bindings::LineAlignSetting::Start;
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// FIXME: 12. Let cue’s WebVTT cue position be auto.
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// 13. Let cue’s WebVTT cue position alignment be auto.
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cue->m_position_alignment = Bindings::PositionAlignSetting::Auto;
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// 14. Let cue’s WebVTT cue size be 100.
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cue->m_size = 100;
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// 15. Let cue’s WebVTT cue text alignment be center alignment.
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cue->m_text_alignment = Bindings::AlignSetting::Center;
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// 16. Return the VTTCue object representing cue.
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return cue;
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}
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VTTCue::VTTCue(JS::Realm& realm, GC::Ptr<HTML::TextTrack> track)
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: HTML::TextTrackCue(realm, track)
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{
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}
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void VTTCue::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(VTTCue);
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Base::initialize(realm);
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}
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void VTTCue::visit_edges(Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_region);
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}
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// https://w3c.github.io/webvtt/#dom-vttcue-vertical
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Bindings::DirectionSetting VTTCue::vertical() const
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{
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switch (m_writing_direction) {
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case WritingDirection::Horizontal:
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return Bindings::DirectionSetting::Empty;
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case WritingDirection::VerticalGrowingLeft:
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return Bindings::DirectionSetting::Rl;
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case WritingDirection::VerticalGrowingRight:
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return Bindings::DirectionSetting::Lr;
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}
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VERIFY_NOT_REACHED();
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}
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// https://w3c.github.io/webvtt/#dom-vttcue-vertical
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void VTTCue::set_vertical(Bindings::DirectionSetting vertical)
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{
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switch (vertical) {
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case Bindings::DirectionSetting::Empty:
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m_writing_direction = WritingDirection::Horizontal;
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break;
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case Bindings::DirectionSetting::Rl:
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m_writing_direction = WritingDirection::VerticalGrowingLeft;
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break;
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case Bindings::DirectionSetting::Lr:
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m_writing_direction = WritingDirection::VerticalGrowingRight;
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break;
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}
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}
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// https://w3c.github.io/webvtt/#cue-computed-position-alignment
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Bindings::PositionAlignSetting VTTCue::computed_position_alignment()
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{
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// 1. If the WebVTT cue position alignment is not auto, then return the value of the WebVTT cue position alignment and abort these
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// steps.
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if (m_position_alignment != Bindings::PositionAlignSetting::Auto)
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return m_position_alignment;
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// 2. If the WebVTT cue text alignment is left, return line-left and abort these steps.
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if (m_text_alignment == Bindings::AlignSetting::Left)
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return Bindings::PositionAlignSetting::LineLeft;
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// 3. If the WebVTT cue text alignment is right, return line-right and abort these steps.
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if (m_text_alignment == Bindings::AlignSetting::Right)
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return Bindings::PositionAlignSetting::LineRight;
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// FIXME: 4. If the WebVTT cue text alignment is start, return line-left if the base direction of the cue text is left-to-right, line-right
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// otherwise.
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// FIXME: 5. If the WebVTT cue text alignment is end, return line-right if the base direction of the cue text is left-to-right, line-left
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// otherwise.
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// 6. Otherwise, return center.
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return Bindings::PositionAlignSetting::Center;
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}
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}
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