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LibWeb: Split AbstractImageStyleValue out of StyleValue.{h,cpp}

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Sam Atkins 2023-03-24 16:42:50 +00:00 • committed by Linus Groh
parent 0f04fa2e6e
commit e61a5ad180
13 changed files with 89 additions and 131 deletions
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81
Userland/Libraries/LibWeb/CSS/StyleValues/AbstractImageStyleValue.h Normal file
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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/CSS/Enums.h>
#include <LibWeb/CSS/Serialize.h>
#include <LibWeb/CSS/StyleValue.h>
namespace Web::CSS {
class AbstractImageStyleValue : public StyleValue {
public:
using StyleValue::StyleValue;
virtual Optional<CSSPixels> natural_width() const { return {}; }
virtual Optional<CSSPixels> natural_height() const { return {}; }
virtual void load_any_resources(DOM::Document&) {};
virtual void resolve_for_size(Layout::Node const&, CSSPixelSize) const {};
virtual bool is_paintable() const = 0;
virtual void paint(PaintContext& context, DevicePixelRect const& dest_rect, ImageRendering) const = 0;
};
// And now, some gradient related things. Maybe these should live somewhere else.
enum class GradientRepeating {
Yes,
No
};
template<typename TPosition>
struct ColorStopListElement {
using PositionType = TPosition;
struct ColorHint {
TPosition value;
inline bool operator==(ColorHint const&) const = default;
};
Optional<ColorHint> transition_hint;
struct ColorStop {
Color color;
Optional<TPosition> position;
Optional<TPosition> second_position = {};
inline bool operator==(ColorStop const&) const = default;
} color_stop;
inline bool operator==(ColorStopListElement const&) const = default;
};
using LinearColorStopListElement = ColorStopListElement<LengthPercentage>;
using AngularColorStopListElement = ColorStopListElement<AnglePercentage>;
static ErrorOr<void> serialize_color_stop_list(StringBuilder& builder, auto const& color_stop_list)
{
bool first = true;
for (auto const& element : color_stop_list) {
if (!first)
TRY(builder.try_append(", "sv));
if (element.transition_hint.has_value())
TRY(builder.try_appendff("{}, "sv, TRY(element.transition_hint->value.to_string())));
TRY(serialize_a_srgb_value(builder, element.color_stop.color));
for (auto position : Array { &element.color_stop.position, &element.color_stop.second_position }) {
if (position->has_value())
TRY(builder.try_appendff(" {}"sv, TRY((*position)->to_string())));
}
first = false;
}
return {};
}
}