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LibWeb: Parse and ignore SVG paint fallback color

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MacDue 2023-07-30 13:52:30 +01:00 committed by Andreas Kling
parent 439735fd35
commit 109ea418ab
Notes: sideshowbarker 2024-07-17 04:10:16 +09:00 
Author: https://github.com/MacDue
Commit: https://github.com/SerenityOS/serenity/commit/109ea418ab
Pull-request: https://github.com/SerenityOS/serenity/pull/20263
1 changed files with 34 additions and 21 deletions
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55
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
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@ -4249,30 +4249,43 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_paint_value(TokenStream<ComponentValue
{
// `<paint> = none | <color> | <url> [none | <color>]? | context-fill | context-stroke`
if (auto color = TRY(parse_color_value(tokens.peek_token()))) {
(void)tokens.next_token();
return color;
}
auto parse_color_or_none = [&]() -> ErrorOr<Optional<RefPtr<StyleValue>>> {
if (auto color = TRY(parse_color_value(tokens.peek_token()))) {
(void)tokens.next_token();
return color;
}
if (auto url = TRY(parse_url_value(tokens.peek_token(), AllowedDataUrlType::Image))) {
// FIXME: Accept `[none | <color>]?`
(void)tokens.next_token();
return url;
}
// NOTE: <color> also accepts identifiers, so we do this identifier check last.
if (tokens.peek_token().is(Token::Type::Ident)) {
auto maybe_ident = value_id_from_string(tokens.peek_token().token().ident());
if (maybe_ident.has_value()) {
// FIXME: Accept `context-fill` and `context-stroke`
switch (*maybe_ident) {
case ValueID::None:
(void)tokens.next_token();
return IdentifierStyleValue::create(*maybe_ident);
default:
return nullptr;
// NOTE: <color> also accepts identifiers, so we do this identifier check last.
if (tokens.peek_token().is(Token::Type::Ident)) {
auto maybe_ident = value_id_from_string(tokens.peek_token().token().ident());
if (maybe_ident.has_value()) {
// FIXME: Accept `context-fill` and `context-stroke`
switch (*maybe_ident) {
case ValueID::None:
(void)tokens.next_token();
return IdentifierStyleValue::create(*maybe_ident);
default:
return nullptr;
}
}
}
return OptionalNone {};
};
// FIMXE: Allow context-fill/context-stroke here
if (auto color_or_none = TRY(parse_color_or_none()); color_or_none.has_value())
return *color_or_none;
if (auto url = TRY(parse_url_value(tokens.peek_token()))) {
(void)tokens.next_token();
tokens.skip_whitespace();
if (auto color_or_none = TRY(parse_color_or_none()); color_or_none == nullptr) {
// Fail to parse if the fallback is invalid, but otherwise ignore it.
// FIXME: Use fallback color
return nullptr;
}
return url;
}
return nullptr;