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https://github.com/RGBCube/serenity
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6e70670e0b
Previously, we were running the "load fonts if needed" machine at the start of every style computation. That was a lot of unnecessary work, especially on sites with lots of style rules, since we had to traverse every style sheet to see if any @font-face rules needed loading. With this patch, we now load fonts once per sheet, right after adding it to a document's style sheet list.
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.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/CSS/StyleSheetList.h>
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#include <LibWeb/DOM/Document.h>
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namespace Web::CSS {
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void StyleSheetList::add_sheet(NonnullRefPtr<CSSStyleSheet> sheet)
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{
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VERIFY(!m_sheets.contains_slow(sheet));
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sheet->set_style_sheet_list({}, this);
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m_sheets.append(sheet);
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m_document.style_computer().invalidate_rule_cache();
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m_document.style_computer().load_fonts_from_sheet(*sheet);
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m_document.invalidate_style();
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}
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void StyleSheetList::remove_sheet(CSSStyleSheet& sheet)
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{
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sheet.set_style_sheet_list({}, nullptr);
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m_sheets.remove_first_matching([&](auto& entry) { return &*entry == &sheet; });
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m_document.style_computer().invalidate_rule_cache();
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m_document.invalidate_style();
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}
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StyleSheetList::StyleSheetList(DOM::Document& document)
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: m_document(document)
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{
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}
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// https://www.w3.org/TR/cssom/#ref-for-dfn-supported-property-indices%E2%91%A1
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bool StyleSheetList::is_supported_property_index(u32 index) const
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{
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// The object’s supported property indices are the numbers in the range zero to one less than the number of CSS style sheets represented by the collection.
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// If there are no such CSS style sheets, then there are no supported property indices.
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if (m_sheets.is_empty())
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return false;
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return index < m_sheets.size();
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}
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}
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