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LibWeb: Parse repeating-linear-gradient()

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Including `-webkit-repeating-linear-gradient()`
This commit is contained in:
MacDue 2022-08-16 17:09:49 +01:00 committed by Andreas Kling
parent b123309b0d
commit f9a685437f
Notes: sideshowbarker 2024-07-17 08:09:14 +09:00 
Author: https://github.com/MacDue
Commit: https://github.com/SerenityOS/serenity/commit/f9a685437f
Pull-request: https://github.com/SerenityOS/serenity/pull/14889
3 changed files with 35 additions and 7 deletions
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25
Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
View file

@ -2362,16 +2362,33 @@ Optional<AK::URL> Parser::parse_url_function(ComponentValue const& component_val
RefPtr<StyleValue> Parser::parse_linear_gradient_function(ComponentValue const& component_value)
{
using GradientType = LinearGradientStyleValue::GradientType;
using Repeating = LinearGradientStyleValue::Repeating;
if (!component_value.is_function())
return {};
auto consume_if_starts_with = [](StringView str, StringView start, auto found_callback) {
if (str.starts_with(start, CaseSensitivity::CaseInsensitive)) {
found_callback();
return str.substring_view(start.length());
}
return str;
};
Repeating repeating_gradient = Repeating::No;
GradientType gradient_type { GradientType::Standard };
auto function_name = component_value.function().name();
GradientType gradient_type { GradientType::Standard };
if (function_name.equals_ignoring_case("-webkit-linear-gradient"sv))
function_name = consume_if_starts_with(function_name, "-webkit-"sv, [&] {
gradient_type = GradientType::WebKit;
else if (!function_name.equals_ignoring_case("linear-gradient"sv))
});
function_name = consume_if_starts_with(function_name, "repeating-"sv, [&] {
repeating_gradient = Repeating::Yes;
});
if (!function_name.equals_ignoring_case("linear-gradient"sv))
return {};
// linear-gradient() = linear-gradient([ <angle> | to <side-or-corner> ]?, <color-stop-list>)
@ -2558,7 +2575,7 @@ RefPtr<StyleValue> Parser::parse_linear_gradient_function(ComponentValue const&
color_stops.append(list_element);
}
return LinearGradientStyleValue::create(gradient_direction, move(color_stops), gradient_type);
return LinearGradientStyleValue::create(gradient_direction, move(color_stops), gradient_type, repeating_gradient);
}
RefPtr<CSSRule> Parser::convert_to_rule(NonnullRefPtr<Rule> rule)

2
Userland/Libraries/LibWeb/CSS/StyleValue.cpp
View file

@ -1491,6 +1491,8 @@ String LinearGradientStyleValue::to_string() const
if (m_gradient_type == GradientType::WebKit)
builder.append("-webkit-"sv);
if (m_repeating == Repeating::Yes)
builder.append("repeating-"sv);
builder.append("linear-gradient("sv);
m_direction.visit(
[&](SideOrCorner side_or_corner) {

15
Userland/Libraries/LibWeb/CSS/StyleValue.h
View file

@ -978,10 +978,15 @@ public:
WebKit
};
static NonnullRefPtr<LinearGradientStyleValue> create(GradientDirection direction, Vector<ColorStopListElement> color_stop_list, GradientType type)
enum class Repeating {
Yes,
No
};
static NonnullRefPtr<LinearGradientStyleValue> create(GradientDirection direction, Vector<ColorStopListElement> color_stop_list, GradientType type, Repeating repeating)
{
VERIFY(color_stop_list.size() >= 2);
return adopt_ref(*new LinearGradientStyleValue(direction, move(color_stop_list), type));
return adopt_ref(*new LinearGradientStyleValue(direction, move(color_stop_list), type, repeating));
}
virtual String to_string() const override;
@ -993,6 +998,8 @@ public:
return m_color_stop_list;
}
bool is_repeating() const { return m_repeating == Repeating::Yes; }
float angle_degrees(Gfx::FloatSize const& gradient_size) const;
void resolve_for_size(Layout::Node const&, Gfx::FloatSize const&) const override;
@ -1001,17 +1008,19 @@ public:
void paint(PaintContext& context, Gfx::IntRect const& dest_rect, CSS::ImageRendering image_rendering) const override;
private:
LinearGradientStyleValue(GradientDirection direction, Vector<ColorStopListElement> color_stop_list, GradientType type)
LinearGradientStyleValue(GradientDirection direction, Vector<ColorStopListElement> color_stop_list, GradientType type, Repeating repeating)
: AbstractImageStyleValue(Type::LinearGradient)
, m_direction(direction)
, m_color_stop_list(move(color_stop_list))
, m_gradient_type(type)
, m_repeating(repeating)
{
}
GradientDirection m_direction;
Vector<ColorStopListElement> m_color_stop_list;
GradientType m_gradient_type;
Repeating m_repeating;
mutable Optional<Painting::LinearGradientData> m_resolved_data;
};