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LibGfx: Add method to get String data from an ICC Profile tag

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Sam Atkins 2023-07-13 13:48:56 +01:00 • committed by Sam Atkins
parent 1066831b39
commit 835dada3d3
2 changed files with 38 additions and 0 deletions
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36
Userland/Libraries/LibGfx/ICC/Profile.cpp
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@ -1709,4 +1709,40 @@ XYZ const& Profile::red_matrix_column() const { return xyz_data(redMatrixColumnT
XYZ const& Profile::green_matrix_column() const { return xyz_data(greenMatrixColumnTag); } XYZ const& Profile::green_matrix_column() const { return xyz_data(greenMatrixColumnTag); }
XYZ const& Profile::blue_matrix_column() const { return xyz_data(blueMatrixColumnTag); } XYZ const& Profile::blue_matrix_column() const { return xyz_data(blueMatrixColumnTag); }
Optional<String> Profile::tag_string_data(TagSignature signature) const
{
auto maybe_tag_data = tag_data(signature);
if (!maybe_tag_data.has_value())
return {};
auto& tag_data = maybe_tag_data.release_value();
if (tag_data.type() == Gfx::ICC::MultiLocalizedUnicodeTagData::Type) {
auto& multi_localized_unicode = static_cast<Gfx::ICC::MultiLocalizedUnicodeTagData const&>(tag_data);
// Try to find 'en-US', otherwise any 'en' language, otherwise the first record.
Optional<String> en_string;
constexpr u16 language_en = ('e' << 8) + 'n';
constexpr u16 country_us = ('U' << 8) + 'S';
for (auto const& record : multi_localized_unicode.records()) {
if (record.iso_639_1_language_code == language_en) {
if (record.iso_3166_1_country_code == country_us)
return record.text;
en_string = record.text;
}
}
if (en_string.has_value())
return en_string.value();
if (!multi_localized_unicode.records().is_empty())
return multi_localized_unicode.records().first().text;
return {};
}
if (tag_data.type() == Gfx::ICC::TextDescriptionTagData::Type) {
auto& text_description = static_cast<Gfx::ICC::TextDescriptionTagData const&>(tag_data);
return text_description.ascii_description();
}
if (tag_data.type() == Gfx::ICC::TextTagData::Type) {
auto& text = static_cast<Gfx::ICC::TextTagData const&>(tag_data);
return text.text();
}
return {};
}
} }

2
Userland/Libraries/LibGfx/ICC/Profile.h
View file

@ -259,6 +259,8 @@ public:
return m_tag_table.get(signature).map([](auto it) -> TagData const& { return *it; }); return m_tag_table.get(signature).map([](auto it) -> TagData const& { return *it; });
} }
Optional<String> tag_string_data(TagSignature signature) const;
size_t tag_count() const { return m_tag_table.size(); } size_t tag_count() const { return m_tag_table.size(); }
// Only versions 2 and 4 are in use. // Only versions 2 and 4 are in use.