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- /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #include <AK/DeprecatedFlyString.h>
- #include <AK/FlyString.h>
- #include <AK/LexicalPath.h>
- #include <AK/Queue.h>
- #include <LibCore/Resource.h>
- #include <LibGfx/Font/Font.h>
- #include <LibGfx/Font/FontDatabase.h>
- #include <LibGfx/Font/OpenType/Font.h>
- #include <LibGfx/Font/ScaledFont.h>
- #include <LibGfx/Font/WOFF/Font.h>
- namespace Gfx {
- FontDatabase& FontDatabase::the()
- {
- static FontDatabase s_the;
- return s_the;
- }
- struct FontDatabase::Private {
- HashMap<FlyString, Vector<NonnullRefPtr<VectorFont>>, AK::ASCIICaseInsensitiveFlyStringTraits> typeface_by_family;
- };
- void FontDatabase::load_all_fonts_from_uri(StringView uri)
- {
- auto root_or_error = Core::Resource::load_from_uri(uri);
- if (root_or_error.is_error()) {
- if (root_or_error.error().is_errno() && root_or_error.error().code() == ENOENT) {
- return;
- }
- dbgln("FontDatabase::load_all_fonts_from_uri('{}'): {}", uri, root_or_error.error());
- return;
- }
- auto root = root_or_error.release_value();
- root->for_each_descendant_file([this](Core::Resource const& resource) -> IterationDecision {
- auto uri = resource.uri();
- auto path = LexicalPath(uri.bytes_as_string_view());
- if (path.has_extension(".ttf"sv)) {
- // FIXME: What about .otf
- if (auto font_or_error = OpenType::Font::try_load_from_resource(resource); !font_or_error.is_error()) {
- auto font = font_or_error.release_value();
- auto& family = m_private->typeface_by_family.ensure(font->family(), [] {
- return Vector<NonnullRefPtr<VectorFont>> {};
- });
- family.append(font);
- }
- } else if (path.has_extension(".woff"sv)) {
- if (auto font_or_error = WOFF::Font::try_load_from_resource(resource); !font_or_error.is_error()) {
- auto font = font_or_error.release_value();
- auto& family = m_private->typeface_by_family.ensure(font->family(), [] {
- return Vector<NonnullRefPtr<VectorFont>> {};
- });
- family.append(font);
- }
- }
- return IterationDecision::Continue;
- });
- }
- FontDatabase::FontDatabase()
- : m_private(make<Private>())
- {
- load_all_fonts_from_uri("resource://fonts"sv);
- }
- RefPtr<Gfx::Font> FontDatabase::get(FlyString const& family, float point_size, unsigned weight, unsigned width, unsigned slope)
- {
- auto it = m_private->typeface_by_family.find(family);
- if (it == m_private->typeface_by_family.end())
- return nullptr;
- for (auto const& typeface : it->value) {
- if (typeface->weight() == weight && typeface->width() == width && typeface->slope() == slope)
- return typeface->scaled_font(point_size);
- }
- return nullptr;
- }
- RefPtr<Gfx::Font> FontDatabase::get(FlyString const& family, FlyString const& variant, float point_size)
- {
- auto it = m_private->typeface_by_family.find(family);
- if (it == m_private->typeface_by_family.end())
- return nullptr;
- for (auto const& typeface : it->value) {
- if (typeface->variant() == variant)
- return typeface->scaled_font(point_size);
- }
- return nullptr;
- }
- void FontDatabase::for_each_typeface_with_family_name(FlyString const& family_name, Function<void(VectorFont const&)> callback)
- {
- auto it = m_private->typeface_by_family.find(family_name);
- if (it == m_private->typeface_by_family.end())
- return;
- for (auto const& typeface : it->value)
- callback(*typeface);
- }
- }
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