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LibWebView+Services+UI: Move the Web plugins to LibWebView
This commit is contained in:
Timothy Flynn
Tim Flynn
parent
9e1f001ffe
commit
a14937c45e
Notes:
github-actions[bot]
2024-11-11 12:36:47 +00:00
Author: https://github.com/trflynn89
Commit: a14937c45e
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2269
9 changed files with 22 additions and 34 deletions
217
Libraries/LibWebView/Plugins/FontPlugin.cpp
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217
Libraries/LibWebView/Plugins/FontPlugin.cpp
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/*
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* Copyright (c) 2022-2023, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2023, Linus Groh <linusg@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 <AK/ByteString.h>
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#include <AK/String.h>
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#include <AK/TypeCasts.h>
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#include <LibCore/Resource.h>
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#include <LibCore/StandardPaths.h>
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#include <LibGfx/Font/FontDatabase.h>
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#include <LibGfx/Font/PathFontProvider.h>
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#include <LibWebView/Plugins/FontPlugin.h>
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#ifdef USE_FONTCONFIG
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# include <fontconfig/fontconfig.h>
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#endif
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namespace WebView {
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FontPlugin::FontPlugin(bool is_layout_test_mode, Gfx::SystemFontProvider* font_provider)
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: m_is_layout_test_mode(is_layout_test_mode)
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{
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#ifdef USE_FONTCONFIG
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{
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auto fontconfig_initialized = FcInit();
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VERIFY(fontconfig_initialized);
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}
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#endif
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if (!font_provider)
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font_provider = &static_cast<Gfx::PathFontProvider&>(Gfx::FontDatabase::the().install_system_font_provider(make<Gfx::PathFontProvider>()));
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if (is<Gfx::PathFontProvider>(*font_provider)) {
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auto& path_font_provider = static_cast<Gfx::PathFontProvider&>(*font_provider);
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// Load anything we can find in the system's font directories
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for (auto const& path : Core::StandardPaths::font_directories().release_value_but_fixme_should_propagate_errors())
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path_font_provider.load_all_fonts_from_uri(MUST(String::formatted("file://{}", path)));
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}
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update_generic_fonts();
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auto default_font_name = generic_font_name(Web::Platform::GenericFont::UiSansSerif);
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m_default_font = Gfx::FontDatabase::the().get(default_font_name, 12.0, 400, Gfx::FontWidth::Normal, 0);
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VERIFY(m_default_font);
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auto default_fixed_width_font_name = generic_font_name(Web::Platform::GenericFont::UiMonospace);
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m_default_fixed_width_font = Gfx::FontDatabase::the().get(default_fixed_width_font_name, 12.0, 400, Gfx::FontWidth::Normal, 0);
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VERIFY(m_default_fixed_width_font);
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}
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FontPlugin::~FontPlugin() = default;
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Gfx::Font& FontPlugin::default_font()
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{
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return *m_default_font;
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}
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Gfx::Font& FontPlugin::default_fixed_width_font()
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{
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return *m_default_fixed_width_font;
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}
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RefPtr<Gfx::Font> FontPlugin::default_emoji_font(float point_size)
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{
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FlyString default_emoji_font_name;
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if (m_is_layout_test_mode) {
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default_emoji_font_name = "Noto Emoji"_fly_string;
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} else {
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#ifdef AK_OS_MACOS
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default_emoji_font_name = "Apple Color Emoji"_fly_string;
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#else
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default_emoji_font_name = "Noto Color Emoji"_fly_string;
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#endif
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}
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return Gfx::FontDatabase::the().get(default_emoji_font_name, point_size, 400, Gfx::FontWidth::Normal, 0);
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}
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#ifdef USE_FONTCONFIG
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static Optional<String> query_fontconfig_for_generic_family(Web::Platform::GenericFont generic_font)
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{
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char const* pattern_string = nullptr;
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switch (generic_font) {
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case Web::Platform::GenericFont::Cursive:
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pattern_string = "cursive";
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break;
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case Web::Platform::GenericFont::Fantasy:
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pattern_string = "fantasy";
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break;
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case Web::Platform::GenericFont::Monospace:
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pattern_string = "monospace";
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break;
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case Web::Platform::GenericFont::SansSerif:
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pattern_string = "sans-serif";
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break;
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case Web::Platform::GenericFont::Serif:
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pattern_string = "serif";
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break;
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case Web::Platform::GenericFont::UiMonospace:
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pattern_string = "monospace";
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break;
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case Web::Platform::GenericFont::UiRounded:
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pattern_string = "sans-serif";
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break;
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case Web::Platform::GenericFont::UiSansSerif:
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pattern_string = "sans-serif";
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break;
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case Web::Platform::GenericFont::UiSerif:
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pattern_string = "serif";
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break;
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default:
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VERIFY_NOT_REACHED();
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}
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auto* config = FcConfigGetCurrent();
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VERIFY(config);
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FcPattern* pattern = FcNameParse(reinterpret_cast<FcChar8 const*>(pattern_string));
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VERIFY(pattern);
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auto success = FcConfigSubstitute(config, pattern, FcMatchPattern);
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VERIFY(success);
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FcDefaultSubstitute(pattern);
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// Never select bitmap fonts.
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success = FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
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VERIFY(success);
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// FIXME: Enable this once we can handle OpenType variable fonts.
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success = FcPatternAddBool(pattern, FC_VARIABLE, FcFalse);
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VERIFY(success);
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Optional<String> name;
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FcResult result {};
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if (auto* matched = FcFontMatch(config, pattern, &result)) {
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FcChar8* family = nullptr;
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if (FcPatternGetString(matched, FC_FAMILY, 0, &family) == FcResultMatch) {
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auto const* family_cstring = reinterpret_cast<char const*>(family);
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if (auto string = String::from_utf8(StringView { family_cstring, strlen(family_cstring) }); !string.is_error()) {
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name = string.release_value();
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}
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}
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FcPatternDestroy(matched);
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}
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FcPatternDestroy(pattern);
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return name;
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}
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#endif
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void FontPlugin::update_generic_fonts()
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{
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// How we choose which system font to use for each CSS font:
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// 1. Try a list of known-suitable fonts with their names hard-coded below.
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// This is rather weird, but it's how things work right now.
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// We should eventually have a way to query the system for the default font.
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// Furthermore, we should allow overriding via some kind of configuration mechanism.
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m_generic_font_names.resize(static_cast<size_t>(Web::Platform::GenericFont::__Count));
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auto update_mapping = [&](Web::Platform::GenericFont generic_font, ReadonlySpan<FlyString> fallbacks) {
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if (m_is_layout_test_mode) {
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m_generic_font_names[static_cast<size_t>(generic_font)] = "SerenitySans"_fly_string;
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return;
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}
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RefPtr<Gfx::Font const> gfx_font;
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#ifdef USE_FONTCONFIG
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auto name = query_fontconfig_for_generic_family(generic_font);
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if (name.has_value()) {
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gfx_font = Gfx::FontDatabase::the().get(name.value(), 16, 400, Gfx::FontWidth::Normal, 0);
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}
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#endif
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if (!gfx_font) {
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for (auto const& fallback : fallbacks) {
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gfx_font = Gfx::FontDatabase::the().get(fallback, 16, 400, Gfx::FontWidth::Normal, 0);
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if (gfx_font)
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break;
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}
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}
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m_generic_font_names[static_cast<size_t>(generic_font)] = gfx_font ? gfx_font->family() : String {};
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};
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// Fallback fonts to look for if Gfx::Font can't load expected font
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// The lists are basically arbitrary, taken from https://www.w3.org/Style/Examples/007/fonts.en.html
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// (We also add Android-specific font names to the list from W3 where required.)
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Vector<FlyString> cursive_fallbacks { "Comic Sans MS"_fly_string, "Comic Sans"_fly_string, "Apple Chancery"_fly_string, "Bradley Hand"_fly_string, "Brush Script MT"_fly_string, "Snell Roundhand"_fly_string, "URW Chancery L"_fly_string, "Dancing Script"_fly_string };
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Vector<FlyString> fantasy_fallbacks { "Impact"_fly_string, "Luminari"_fly_string, "Chalkduster"_fly_string, "Jazz LET"_fly_string, "Blippo"_fly_string, "Stencil Std"_fly_string, "Marker Felt"_fly_string, "Trattatello"_fly_string, "Coming Soon"_fly_string };
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Vector<FlyString> monospace_fallbacks { "Andale Mono"_fly_string, "Courier New"_fly_string, "Courier"_fly_string, "FreeMono"_fly_string, "OCR A Std"_fly_string, "DejaVu Sans Mono"_fly_string, "Droid Sans Mono"_fly_string, "Liberation Mono"_fly_string };
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Vector<FlyString> sans_serif_fallbacks { "Arial"_fly_string, "Helvetica"_fly_string, "Verdana"_fly_string, "Trebuchet MS"_fly_string, "Gill Sans"_fly_string, "Noto Sans"_fly_string, "Avantgarde"_fly_string, "Optima"_fly_string, "Arial Narrow"_fly_string, "Liberation Sans"_fly_string, "Roboto"_fly_string };
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Vector<FlyString> serif_fallbacks { "Times"_fly_string, "Times New Roman"_fly_string, "Didot"_fly_string, "Georgia"_fly_string, "Palatino"_fly_string, "Bookman"_fly_string, "New Century Schoolbook"_fly_string, "American Typewriter"_fly_string, "Liberation Serif"_fly_string, "Roman"_fly_string, "Noto Serif"_fly_string };
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update_mapping(Web::Platform::GenericFont::Cursive, cursive_fallbacks);
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update_mapping(Web::Platform::GenericFont::Fantasy, fantasy_fallbacks);
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update_mapping(Web::Platform::GenericFont::Monospace, monospace_fallbacks);
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update_mapping(Web::Platform::GenericFont::SansSerif, sans_serif_fallbacks);
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update_mapping(Web::Platform::GenericFont::Serif, serif_fallbacks);
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update_mapping(Web::Platform::GenericFont::UiMonospace, monospace_fallbacks);
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update_mapping(Web::Platform::GenericFont::UiRounded, sans_serif_fallbacks);
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update_mapping(Web::Platform::GenericFont::UiSansSerif, sans_serif_fallbacks);
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update_mapping(Web::Platform::GenericFont::UiSerif, serif_fallbacks);
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}
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FlyString FontPlugin::generic_font_name(Web::Platform::GenericFont generic_font)
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{
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return m_generic_font_names[static_cast<size_t>(generic_font)];
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}
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}
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