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ladybird/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
Sam Atkins 35f64af3a4 LibWeb: Implement CalculationResult type for calc() results 
calc() sub-expressions can return a variety of different types, which
then can be combined using the basic arithmetic operators. This class
should make that easier to deal with, instead of having to handle all
the possible combinations at each call site. :^)

We take the Layout::Node as a pointer not a reference, since later we'll
need to call these functions when resolving to `<number>` or `<integer>`
which don't use those, and we don't want to force users to pass them in
unnecessarily.
2022-02-04 13:52:02 +01:00

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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/ByteBuffer.h>
#include <LibGfx/Palette.h>
#include <LibWeb/CSS/Serialize.h>
#include <LibWeb/CSS/StyleValue.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/Loader/LoadRequest.h>
#include <LibWeb/Loader/ResourceLoader.h>
#include <LibWeb/Page/Page.h>
namespace Web::CSS {
StyleValue::StyleValue(Type type)
: m_type(type)
{
}
StyleValue::~StyleValue()
{
}
BackgroundStyleValue const& StyleValue::as_background() const
{
VERIFY(is_background());
return static_cast<BackgroundStyleValue const&>(*this);
}
BackgroundRepeatStyleValue const& StyleValue::as_background_repeat() const
{
VERIFY(is_background_repeat());
return static_cast<BackgroundRepeatStyleValue const&>(*this);
}
BackgroundSizeStyleValue const& StyleValue::as_background_size() const
{
VERIFY(is_background_size());
return static_cast<BackgroundSizeStyleValue const&>(*this);
}
BorderStyleValue const& StyleValue::as_border() const
{
VERIFY(is_border());
return static_cast<BorderStyleValue const&>(*this);
}
BorderRadiusStyleValue const& StyleValue::as_border_radius() const
{
VERIFY(is_border_radius());
return static_cast<BorderRadiusStyleValue const&>(*this);
}
BoxShadowStyleValue const& StyleValue::as_box_shadow() const
{
VERIFY(is_box_shadow());
return static_cast<BoxShadowStyleValue const&>(*this);
}
CalculatedStyleValue const& StyleValue::as_calculated() const
{
VERIFY(is_calculated());
return static_cast<CalculatedStyleValue const&>(*this);
}
ColorStyleValue const& StyleValue::as_color() const
{
VERIFY(is_color());
return static_cast<ColorStyleValue const&>(*this);
}
FlexStyleValue const& StyleValue::as_flex() const
{
VERIFY(is_flex());
return static_cast<FlexStyleValue const&>(*this);
}
FlexFlowStyleValue const& StyleValue::as_flex_flow() const
{
VERIFY(is_flex_flow());
return static_cast<FlexFlowStyleValue const&>(*this);
}
FontStyleValue const& StyleValue::as_font() const
{
VERIFY(is_font());
return static_cast<FontStyleValue const&>(*this);
}
IdentifierStyleValue const& StyleValue::as_identifier() const
{
VERIFY(is_identifier());
return static_cast<IdentifierStyleValue const&>(*this);
}
ImageStyleValue const& StyleValue::as_image() const
{
VERIFY(is_image());
return static_cast<ImageStyleValue const&>(*this);
}
InheritStyleValue const& StyleValue::as_inherit() const
{
VERIFY(is_inherit());
return static_cast<InheritStyleValue const&>(*this);
}
InitialStyleValue const& StyleValue::as_initial() const
{
VERIFY(is_initial());
return static_cast<InitialStyleValue const&>(*this);
}
LengthStyleValue const& StyleValue::as_length() const
{
VERIFY(is_length());
return static_cast<LengthStyleValue const&>(*this);
}
ListStyleStyleValue const& StyleValue::as_list_style() const
{
VERIFY(is_list_style());
return static_cast<ListStyleStyleValue const&>(*this);
}
NumericStyleValue const& StyleValue::as_numeric() const
{
VERIFY(is_numeric());
return static_cast<NumericStyleValue const&>(*this);
}
OverflowStyleValue const& StyleValue::as_overflow() const
{
VERIFY(is_overflow());
return static_cast<OverflowStyleValue const&>(*this);
}
PercentageStyleValue const& StyleValue::as_percentage() const
{
VERIFY(is_percentage());
return static_cast<PercentageStyleValue const&>(*this);
}
PositionStyleValue const& StyleValue::as_position() const
{
VERIFY(is_position());
return static_cast<PositionStyleValue const&>(*this);
}
StringStyleValue const& StyleValue::as_string() const
{
VERIFY(is_string());
return static_cast<StringStyleValue const&>(*this);
}
TextDecorationStyleValue const& StyleValue::as_text_decoration() const
{
VERIFY(is_text_decoration());
return static_cast<TextDecorationStyleValue const&>(*this);
}
TransformationStyleValue const& StyleValue::as_transformation() const
{
VERIFY(is_transformation());
return static_cast<TransformationStyleValue const&>(*this);
}
UnresolvedStyleValue const& StyleValue::as_unresolved() const
{
VERIFY(is_unresolved());
return static_cast<UnresolvedStyleValue const&>(*this);
}
UnsetStyleValue const& StyleValue::as_unset() const
{
VERIFY(is_unset());
return static_cast<UnsetStyleValue const&>(*this);
}
StyleValueList const& StyleValue::as_value_list() const
{
VERIFY(is_value_list());
return static_cast<StyleValueList const&>(*this);
}
BackgroundStyleValue::BackgroundStyleValue(
NonnullRefPtr<StyleValue> color,
NonnullRefPtr<StyleValue> image,
NonnullRefPtr<StyleValue> position,
NonnullRefPtr<StyleValue> size,
NonnullRefPtr<StyleValue> repeat,
NonnullRefPtr<StyleValue> attachment,
NonnullRefPtr<StyleValue> origin,
NonnullRefPtr<StyleValue> clip)
: StyleValue(Type::Background)
, m_color(color)
, m_image(image)
, m_position(position)
, m_size(size)
, m_repeat(repeat)
, m_attachment(attachment)
, m_origin(origin)
, m_clip(clip)
{
auto layer_count = [](auto style_value) -> size_t {
if (style_value->is_value_list())
return style_value->as_value_list().size();
else
return 1;
};
m_layer_count = max(layer_count(m_image), layer_count(m_position));
m_layer_count = max(m_layer_count, layer_count(m_size));
m_layer_count = max(m_layer_count, layer_count(m_repeat));
m_layer_count = max(m_layer_count, layer_count(m_attachment));
m_layer_count = max(m_layer_count, layer_count(m_origin));
m_layer_count = max(m_layer_count, layer_count(m_clip));
VERIFY(!m_color->is_value_list());
}
String BackgroundStyleValue::to_string() const
{
if (m_layer_count == 1) {
return String::formatted("{} {} {} {} {} {} {} {}", m_color->to_string(), m_image->to_string(), m_position->to_string(), m_size->to_string(), m_repeat->to_string(), m_attachment->to_string(), m_origin->to_string(), m_clip->to_string());
}
auto get_layer_value_string = [](NonnullRefPtr<StyleValue> const& style_value, size_t index) {
if (style_value->is_value_list())
return style_value->as_value_list().value_at(index, true)->to_string();
return style_value->to_string();
};
StringBuilder builder;
for (size_t i = 0; i < m_layer_count; i++) {
if (i)
builder.append(", ");
if (i == m_layer_count - 1)
builder.appendff("{} ", m_color->to_string());
builder.appendff("{} {} {} {} {} {} {}", get_layer_value_string(m_image, i), get_layer_value_string(m_position, i), get_layer_value_string(m_size, i), get_layer_value_string(m_repeat, i), get_layer_value_string(m_attachment, i), get_layer_value_string(m_origin, i), get_layer_value_string(m_clip, i));
}
return builder.to_string();
}
<<<<<<< HEAD
String BackgroundRepeatStyleValue::to_string() const
{
return String::formatted("{} {}", CSS::to_string(m_repeat_x), CSS::to_string(m_repeat_y));
}
String BackgroundSizeStyleValue::to_string() const
{
return String::formatted("{} {}", m_size_x.to_string(), m_size_y.to_string());
}
String BorderStyleValue::to_string() const
{
return String::formatted("{} {} {}", m_border_width->to_string(), m_border_style->to_string(), m_border_color->to_string());
}
String BorderRadiusStyleValue::to_string() const
{
return String::formatted("{} / {}", m_horizontal_radius.to_string(), m_vertical_radius.to_string());
}
String BoxShadowStyleValue::to_string() const
{
return String::formatted("{} {} {} {}", m_offset_x.to_string(), m_offset_y.to_string(), m_blur_radius.to_string(), m_color.to_string());
=======
void CalculatedStyleValue::CalculationResult::add(CalculationResult const& other, Layout::Node const* layout_node, Length const& percentage_basis)
{
add_or_subtract_internal(SumOperation::Add, other, layout_node, percentage_basis);
}
void CalculatedStyleValue::CalculationResult::subtract(CalculationResult const& other, Layout::Node const* layout_node, Length const& percentage_basis)
{
add_or_subtract_internal(SumOperation::Subtract, other, layout_node, percentage_basis);
}
void CalculatedStyleValue::CalculationResult::add_or_subtract_internal(SumOperation op, CalculationResult const& other, Layout::Node const* layout_node, Length const& percentage_basis)
{
// We know from validation when resolving the type, that "both sides have the same type, or that one side is a <number> and the other is an <integer>".
// Though, having the same type may mean that one side is a <dimension> and the other a <percentage>.
// Note: This is almost identical to ::add()
m_value.visit(
[&](float f) {
if (op == SumOperation::Add)
m_value = f + other.m_value.get<float>();
else
m_value = f - other.m_value.get<float>();
},
[&](Length const& length) {
auto this_px = length.to_px(*layout_node);
if (other.m_value.has<Length>()) {
auto other_px = other.m_value.get<Length>().to_px(*layout_node);
if (op == SumOperation::Add)
m_value = Length::make_px(this_px + other_px);
else
m_value = Length::make_px(this_px - other_px);
} else {
VERIFY(!percentage_basis.is_undefined());
auto other_px = percentage_basis.percentage_of(other.m_value.get<Percentage>()).to_px(*layout_node);
if (op == SumOperation::Add)
m_value = Length::make_px(this_px + other_px);
else
m_value = Length::make_px(this_px - other_px);
}
},
[&](Percentage const& percentage) {
if (other.m_value.has<Percentage>()) {
if (op == SumOperation::Add)
m_value = Percentage { percentage.value() + other.m_value.get<Percentage>().value() };
else
m_value = Percentage { percentage.value() - other.m_value.get<Percentage>().value() };
return;
}
// Other side isn't a percentage, so the easiest way to handle it without duplicating all the logic, is just to swap `this` and `other`.
CalculationResult new_value = other;
if (op == SumOperation::Add)
new_value.add(*this, layout_node, percentage_basis);
else
new_value.subtract(*this, layout_node, percentage_basis);
*this = new_value;
});
}
void CalculatedStyleValue::CalculationResult::multiply_by(CalculationResult const& other, Layout::Node const* layout_node)
{
// We know from validation when resolving the type, that at least one side must be a <number> or <integer>.
// Both of these are represented as a float.
VERIFY(m_value.has<float>() || other.m_value.has<float>());
bool other_is_number = other.m_value.has<float>();
m_value.visit(
[&](float f) {
if (other_is_number) {
m_value = f * other.m_value.get<float>();
} else {
// Avoid duplicating all the logic by swapping `this` and `other`.
CalculationResult new_value = other;
new_value.multiply_by(*this, layout_node);
*this = new_value;
}
},
[&](Length const& length) {
m_value = Length::make_px(length.to_px(*layout_node) * other.m_value.get<float>());
},
[&](Percentage const& percentage) {
m_value = Percentage { percentage.value() * other.m_value.get<float>() };
});
}
void CalculatedStyleValue::CalculationResult::divide_by(CalculationResult const& other, Layout::Node const* layout_node)
{
// We know from validation when resolving the type, that `other` must be a <number> or <integer>.
// Both of these are represented as a float.
float denominator = other.m_value.get<float>();
// FIXME: Dividing by 0 is invalid, and should be caught during parsing.
VERIFY(denominator != 0.0f);
m_value.visit(
[&](float f) {
m_value = f / denominator;
},
[&](Length const& length) {
m_value = Length::make_px(length.to_px(*layout_node) / denominator);
},
[&](Percentage const& percentage) {
m_value = Percentage { percentage.value() / denominator };
});
>>>>>>> d91d120251 (LibWeb: Implement CalculationResult type for calc() results)
}
static float resolve_calc_value(CalculatedStyleValue::CalcValue const& calc_value, Layout::Node const& layout_node);
static float resolve_calc_number_value(CalculatedStyleValue::CalcNumberValue const&);
static float resolve_calc_product(NonnullOwnPtr<CalculatedStyleValue::CalcProduct> const& calc_product, Layout::Node const& layout_node);
static float resolve_calc_sum(NonnullOwnPtr<CalculatedStyleValue::CalcSum> const& calc_sum, Layout::Node const& layout_node);
static float resolve_calc_number_sum(NonnullOwnPtr<CalculatedStyleValue::CalcNumberSum> const&);
static float resolve_calc_number_product(NonnullOwnPtr<CalculatedStyleValue::CalcNumberProduct> const&);
Optional<Length> CalculatedStyleValue::resolve_length(Layout::Node const& layout_node) const
{
auto length = resolve_calc_sum(m_expression, layout_node);
return Length::make_px(length);
}
static float resolve_calc_value(CalculatedStyleValue::CalcValue const& calc_value, Layout::Node const& layout_node)
{
return calc_value.value.visit(
[](float value) { return value; },
[&](Length const& length) {
return length.resolved_or_zero(layout_node).to_px(layout_node);
},
[&](NonnullOwnPtr<CalculatedStyleValue::CalcSum> const& calc_sum) {
return resolve_calc_sum(calc_sum, layout_node);
},
[](auto&) {
VERIFY_NOT_REACHED();
return 0.0f;
});
}
static float resolve_calc_number_product(NonnullOwnPtr<CalculatedStyleValue::CalcNumberProduct> const& calc_number_product)
{
auto value = resolve_calc_number_value(calc_number_product->first_calc_number_value);
for (auto& additional_number_value : calc_number_product->zero_or_more_additional_calc_number_values) {
auto additional_value = resolve_calc_number_value(additional_number_value.value);
if (additional_number_value.op == CalculatedStyleValue::ProductOperation::Multiply)
value *= additional_value;
else if (additional_number_value.op == CalculatedStyleValue::ProductOperation::Divide)
value /= additional_value;
else
VERIFY_NOT_REACHED();
}
return value;
}
static float resolve_calc_number_sum(NonnullOwnPtr<CalculatedStyleValue::CalcNumberSum> const& calc_number_sum)
{
auto value = resolve_calc_number_product(calc_number_sum->first_calc_number_product);
for (auto& additional_product : calc_number_sum->zero_or_more_additional_calc_number_products) {
auto additional_value = resolve_calc_number_product(additional_product.value);
if (additional_product.op == CSS::CalculatedStyleValue::SumOperation::Add)
value += additional_value;
else if (additional_product.op == CSS::CalculatedStyleValue::SumOperation::Subtract)
value -= additional_value;
else
VERIFY_NOT_REACHED();
}
return value;
}
static float resolve_calc_number_value(CalculatedStyleValue::CalcNumberValue const& number_value)
{
return number_value.value.visit(
[](float number) { return number; },
[](NonnullOwnPtr<CalculatedStyleValue::CalcNumberSum> const& calc_number_sum) {
return resolve_calc_number_sum(calc_number_sum);
});
}
static float resolve_calc_product(NonnullOwnPtr<CalculatedStyleValue::CalcProduct> const& calc_product, Layout::Node const& layout_node)
{
auto value = resolve_calc_value(calc_product->first_calc_value, layout_node);
for (auto& additional_value : calc_product->zero_or_more_additional_calc_values) {
additional_value.value.visit(
[&](CalculatedStyleValue::CalcValue const& calc_value) {
if (additional_value.op != CalculatedStyleValue::ProductOperation::Multiply)
VERIFY_NOT_REACHED();
auto resolved_value = resolve_calc_value(calc_value, layout_node);
value *= resolved_value;
},
[&](CalculatedStyleValue::CalcNumberValue const& calc_number_value) {
if (additional_value.op != CalculatedStyleValue::ProductOperation::Divide)
VERIFY_NOT_REACHED();
auto resolved_calc_number_value = resolve_calc_number_value(calc_number_value);
value /= resolved_calc_number_value;
});
}
return value;
}
static float resolve_calc_sum(NonnullOwnPtr<CalculatedStyleValue::CalcSum> const& calc_sum, Layout::Node const& layout_node)
{
auto value = resolve_calc_product(calc_sum->first_calc_product, layout_node);
for (auto& additional_product : calc_sum->zero_or_more_additional_calc_products) {
auto additional_value = resolve_calc_product(additional_product.value, layout_node);
if (additional_product.op == CalculatedStyleValue::SumOperation::Add)
value += additional_value;
else if (additional_product.op == CalculatedStyleValue::SumOperation::Subtract)
value -= additional_value;
else
VERIFY_NOT_REACHED();
}
return value;
}
static bool is_number(CalculatedStyleValue::ResolvedType type)
{
return type == CalculatedStyleValue::ResolvedType::Number || type == CalculatedStyleValue::ResolvedType::Integer;
}
static bool is_dimension(CalculatedStyleValue::ResolvedType type)
{
return type != CalculatedStyleValue::ResolvedType::Number
&& type != CalculatedStyleValue::ResolvedType::Integer
&& type != CalculatedStyleValue::ResolvedType::Percentage;
}
template<typename SumWithOperator>
static Optional<CalculatedStyleValue::ResolvedType> resolve_sum_type(CalculatedStyleValue::ResolvedType first_type, NonnullOwnPtrVector<SumWithOperator> const& zero_or_more_additional_products)
{
auto type = first_type;
for (auto const& product : zero_or_more_additional_products) {
auto maybe_product_type = product.resolved_type();
if (!maybe_product_type.has_value())
return {};
auto product_type = maybe_product_type.value();
// At + or -, check that both sides have the same type, or that one side is a <number> and the other is an <integer>.
// If both sides are the same type, resolve to that type.
if (product_type == type)
continue;
// If one side is a <number> and the other is an <integer>, resolve to <number>.
if (is_number(type) && is_number(product_type)) {
type = CalculatedStyleValue::ResolvedType::Number;
continue;
}
// FIXME: calc() handles <percentage> by allowing them to pretend to be whatever <dimension> type is allowed at this location.
// Since we can't easily check what that type is, we just allow <percentage> to combine with any other <dimension> type.
if (type == CalculatedStyleValue::ResolvedType::Percentage && is_dimension(product_type)) {
type = product_type;
continue;
}
if (is_dimension(type) && product_type == CalculatedStyleValue::ResolvedType::Percentage)
continue;
return {};
}
return type;
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcSum::resolved_type() const
{
auto maybe_type = first_calc_product->resolved_type();
if (!maybe_type.has_value())
return {};
auto type = maybe_type.value();
return resolve_sum_type(type, zero_or_more_additional_calc_products);
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberSum::resolved_type() const
{
auto maybe_type = first_calc_number_product->resolved_type();
if (!maybe_type.has_value())
return {};
auto type = maybe_type.value();
return resolve_sum_type(type, zero_or_more_additional_calc_number_products);
}
template<typename ProductWithOperator>
static Optional<CalculatedStyleValue::ResolvedType> resolve_product_type(CalculatedStyleValue::ResolvedType first_type, NonnullOwnPtrVector<ProductWithOperator> const& zero_or_more_additional_values)
{
auto type = first_type;
for (auto const& value : zero_or_more_additional_values) {
auto maybe_value_type = value.resolved_type();
if (!maybe_value_type.has_value())
return {};
auto value_type = maybe_value_type.value();
if (value.op == CalculatedStyleValue::ProductOperation::Multiply) {
// At *, check that at least one side is <number>.
if (!(is_number(type) || is_number(value_type)))
return {};
// If both sides are <integer>, resolve to <integer>.
if (type == CalculatedStyleValue::ResolvedType::Integer && value_type == CalculatedStyleValue::ResolvedType::Integer) {
type = CalculatedStyleValue::ResolvedType::Integer;
} else {
// Otherwise, resolve to the type of the other side.
if (is_number(type))
type = value_type;
}
continue;
} else {
VERIFY(value.op == CalculatedStyleValue::ProductOperation::Divide);
// At /, check that the right side is <number>.
if (!is_number(value_type))
return {};
// If the left side is <integer>, resolve to <number>.
if (type == CalculatedStyleValue::ResolvedType::Integer) {
type = CalculatedStyleValue::ResolvedType::Number;
} else {
// Otherwise, resolve to the type of the left side.
}
// FIXME: Division by zero makes the whole calc() expression invalid.
}
}
return type;
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcProduct::resolved_type() const
{
auto maybe_type = first_calc_value.resolved_type();
if (!maybe_type.has_value())
return {};
auto type = maybe_type.value();
return resolve_product_type(type, zero_or_more_additional_calc_values);
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcSumPartWithOperator::resolved_type() const
{
return value->resolved_type();
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberProduct::resolved_type() const
{
auto maybe_type = first_calc_number_value.resolved_type();
if (!maybe_type.has_value())
return {};
auto type = maybe_type.value();
return resolve_product_type(type, zero_or_more_additional_calc_number_values);
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberProductPartWithOperator::resolved_type() const
{
return value.resolved_type();
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberSumPartWithOperator::resolved_type() const
{
return value->resolved_type();
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcProductPartWithOperator::resolved_type() const
{
return value.visit(
[](CalcValue const& calc_value) {
return calc_value.resolved_type();
},
[](CalcNumberValue const& calc_number_value) {
return calc_number_value.resolved_type();
});
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcValue::resolved_type() const
{
return value.visit(
[](float) -> Optional<CalculatedStyleValue::ResolvedType> { return { ResolvedType::Number }; },
[](Length const&) -> Optional<CalculatedStyleValue::ResolvedType> { return { ResolvedType::Length }; },
[](NonnullOwnPtr<CalcSum> const& sum) { return sum->resolved_type(); });
}
Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberValue::resolved_type() const
{
return value.visit(
[](float) -> Optional<CalculatedStyleValue::ResolvedType> { return { ResolvedType::Number }; },
[](NonnullOwnPtr<CalcNumberSum> const& sum) { return sum->resolved_type(); });
}
// https://www.w3.org/TR/css-color-4/#serializing-sRGB-values
String ColorStyleValue::to_string() const
{
if (m_color.alpha() == 1)
return String::formatted("rgb({}, {}, {})", m_color.red(), m_color.green(), m_color.blue());
return String::formatted("rgba({}, {}, {}, {})", m_color.red(), m_color.green(), m_color.blue(), (float)(m_color.alpha()) / 255.0f);
}
String CombinedBorderRadiusStyleValue::to_string() const
{
return String::formatted("{} {} {} {} / {} {} {} {}", m_top_left->horizontal_radius().to_string(), m_top_right->horizontal_radius().to_string(), m_bottom_right->horizontal_radius().to_string(), m_bottom_left->horizontal_radius().to_string(), m_top_left->vertical_radius().to_string(), m_top_right->vertical_radius().to_string(), m_bottom_right->vertical_radius().to_string(), m_bottom_left->vertical_radius().to_string());
}
String FlexStyleValue::to_string() const
{
return String::formatted("{} {} {}", m_grow->to_string(), m_shrink->to_string(), m_basis->to_string());
}
String FlexFlowStyleValue::to_string() const
{
return String::formatted("{} {}", m_flex_direction->to_string(), m_flex_wrap->to_string());
}
String FontStyleValue::to_string() const
{
return String::formatted("{} {} {} / {} {}", m_font_style->to_string(), m_font_weight->to_string(), m_font_size->to_string(), m_line_height->to_string(), m_font_families->to_string());
}
String IdentifierStyleValue::to_string() const
{
return CSS::string_from_value_id(m_id);
}
bool IdentifierStyleValue::has_color() const
{
switch (m_id) {
case ValueID::Currentcolor:
case ValueID::LibwebLink:
case ValueID::LibwebPaletteActiveLink:
case ValueID::LibwebPaletteActiveWindowBorder1:
case ValueID::LibwebPaletteActiveWindowBorder2:
case ValueID::LibwebPaletteActiveWindowTitle:
case ValueID::LibwebPaletteBase:
case ValueID::LibwebPaletteBaseText:
case ValueID::LibwebPaletteButton:
case ValueID::LibwebPaletteButtonText:
case ValueID::LibwebPaletteDesktopBackground:
case ValueID::LibwebPaletteFocusOutline:
case ValueID::LibwebPaletteHighlightWindowBorder1:
case ValueID::LibwebPaletteHighlightWindowBorder2:
case ValueID::LibwebPaletteHighlightWindowTitle:
case ValueID::LibwebPaletteHoverHighlight:
case ValueID::LibwebPaletteInactiveSelection:
case ValueID::LibwebPaletteInactiveSelectionText:
case ValueID::LibwebPaletteInactiveWindowBorder1:
case ValueID::LibwebPaletteInactiveWindowBorder2:
case ValueID::LibwebPaletteInactiveWindowTitle:
case ValueID::LibwebPaletteLink:
case ValueID::LibwebPaletteMenuBase:
case ValueID::LibwebPaletteMenuBaseText:
case ValueID::LibwebPaletteMenuSelection:
case ValueID::LibwebPaletteMenuSelectionText:
case ValueID::LibwebPaletteMenuStripe:
case ValueID::LibwebPaletteMovingWindowBorder1:
case ValueID::LibwebPaletteMovingWindowBorder2:
case ValueID::LibwebPaletteMovingWindowTitle:
case ValueID::LibwebPaletteRubberBandBorder:
case ValueID::LibwebPaletteRubberBandFill:
case ValueID::LibwebPaletteRuler:
case ValueID::LibwebPaletteRulerActiveText:
case ValueID::LibwebPaletteRulerBorder:
case ValueID::LibwebPaletteRulerInactiveText:
case ValueID::LibwebPaletteSelection:
case ValueID::LibwebPaletteSelectionText:
case ValueID::LibwebPaletteSyntaxComment:
case ValueID::LibwebPaletteSyntaxControlKeyword:
case ValueID::LibwebPaletteSyntaxIdentifier:
case ValueID::LibwebPaletteSyntaxKeyword:
case ValueID::LibwebPaletteSyntaxNumber:
case ValueID::LibwebPaletteSyntaxOperator:
case ValueID::LibwebPaletteSyntaxPreprocessorStatement:
case ValueID::LibwebPaletteSyntaxPreprocessorValue:
case ValueID::LibwebPaletteSyntaxPunctuation:
case ValueID::LibwebPaletteSyntaxString:
case ValueID::LibwebPaletteSyntaxType:
case ValueID::LibwebPaletteTextCursor:
case ValueID::LibwebPaletteThreedHighlight:
case ValueID::LibwebPaletteThreedShadow1:
case ValueID::LibwebPaletteThreedShadow2:
case ValueID::LibwebPaletteVisitedLink:
case ValueID::LibwebPaletteWindow:
case ValueID::LibwebPaletteWindowText:
return true;
default:
return false;
}
}
Color IdentifierStyleValue::to_color(Layout::NodeWithStyle const& node) const
{
if (id() == CSS::ValueID::Currentcolor) {
if (!node.has_style())
return Color::Black;
return node.computed_values().color();
}
auto& document = node.document();
if (id() == CSS::ValueID::LibwebLink)
return document.link_color();
VERIFY(document.page());
auto palette = document.page()->palette();
switch (id()) {
case CSS::ValueID::LibwebPaletteDesktopBackground:
return palette.color(ColorRole::DesktopBackground);
case CSS::ValueID::LibwebPaletteActiveWindowBorder1:
return palette.color(ColorRole::ActiveWindowBorder1);
case CSS::ValueID::LibwebPaletteActiveWindowBorder2:
return palette.color(ColorRole::ActiveWindowBorder2);
case CSS::ValueID::LibwebPaletteActiveWindowTitle:
return palette.color(ColorRole::ActiveWindowTitle);
case CSS::ValueID::LibwebPaletteInactiveWindowBorder1:
return palette.color(ColorRole::InactiveWindowBorder1);
case CSS::ValueID::LibwebPaletteInactiveWindowBorder2:
return palette.color(ColorRole::InactiveWindowBorder2);
case CSS::ValueID::LibwebPaletteInactiveWindowTitle:
return palette.color(ColorRole::InactiveWindowTitle);
case CSS::ValueID::LibwebPaletteMovingWindowBorder1:
return palette.color(ColorRole::MovingWindowBorder1);
case CSS::ValueID::LibwebPaletteMovingWindowBorder2:
return palette.color(ColorRole::MovingWindowBorder2);
case CSS::ValueID::LibwebPaletteMovingWindowTitle:
return palette.color(ColorRole::MovingWindowTitle);
case CSS::ValueID::LibwebPaletteHighlightWindowBorder1:
return palette.color(ColorRole::HighlightWindowBorder1);
case CSS::ValueID::LibwebPaletteHighlightWindowBorder2:
return palette.color(ColorRole::HighlightWindowBorder2);
case CSS::ValueID::LibwebPaletteHighlightWindowTitle:
return palette.color(ColorRole::HighlightWindowTitle);
case CSS::ValueID::LibwebPaletteMenuStripe:
return palette.color(ColorRole::MenuStripe);
case CSS::ValueID::LibwebPaletteMenuBase:
return palette.color(ColorRole::MenuBase);
case CSS::ValueID::LibwebPaletteMenuBaseText:
return palette.color(ColorRole::MenuBaseText);
case CSS::ValueID::LibwebPaletteMenuSelection:
return palette.color(ColorRole::MenuSelection);
case CSS::ValueID::LibwebPaletteMenuSelectionText:
return palette.color(ColorRole::MenuSelectionText);
case CSS::ValueID::LibwebPaletteWindow:
return palette.color(ColorRole::Window);
case CSS::ValueID::LibwebPaletteWindowText:
return palette.color(ColorRole::WindowText);
case CSS::ValueID::LibwebPaletteButton:
return palette.color(ColorRole::Button);
case CSS::ValueID::LibwebPaletteButtonText:
return palette.color(ColorRole::ButtonText);
case CSS::ValueID::LibwebPaletteBase:
return palette.color(ColorRole::Base);
case CSS::ValueID::LibwebPaletteBaseText:
return palette.color(ColorRole::BaseText);
case CSS::ValueID::LibwebPaletteThreedHighlight:
return palette.color(ColorRole::ThreedHighlight);
case CSS::ValueID::LibwebPaletteThreedShadow1:
return palette.color(ColorRole::ThreedShadow1);
case CSS::ValueID::LibwebPaletteThreedShadow2:
return palette.color(ColorRole::ThreedShadow2);
case CSS::ValueID::LibwebPaletteHoverHighlight:
return palette.color(ColorRole::HoverHighlight);
case CSS::ValueID::LibwebPaletteSelection:
return palette.color(ColorRole::Selection);
case CSS::ValueID::LibwebPaletteSelectionText:
return palette.color(ColorRole::SelectionText);
case CSS::ValueID::LibwebPaletteInactiveSelection:
return palette.color(ColorRole::InactiveSelection);
case CSS::ValueID::LibwebPaletteInactiveSelectionText:
return palette.color(ColorRole::InactiveSelectionText);
case CSS::ValueID::LibwebPaletteRubberBandFill:
return palette.color(ColorRole::RubberBandFill);
case CSS::ValueID::LibwebPaletteRubberBandBorder:
return palette.color(ColorRole::RubberBandBorder);
case CSS::ValueID::LibwebPaletteLink:
return palette.color(ColorRole::Link);
case CSS::ValueID::LibwebPaletteActiveLink:
return palette.color(ColorRole::ActiveLink);
case CSS::ValueID::LibwebPaletteVisitedLink:
return palette.color(ColorRole::VisitedLink);
case CSS::ValueID::LibwebPaletteRuler:
return palette.color(ColorRole::Ruler);
case CSS::ValueID::LibwebPaletteRulerBorder:
return palette.color(ColorRole::RulerBorder);
case CSS::ValueID::LibwebPaletteRulerActiveText:
return palette.color(ColorRole::RulerActiveText);
case CSS::ValueID::LibwebPaletteRulerInactiveText:
return palette.color(ColorRole::RulerInactiveText);
case CSS::ValueID::LibwebPaletteTextCursor:
return palette.color(ColorRole::TextCursor);
case CSS::ValueID::LibwebPaletteFocusOutline:
return palette.color(ColorRole::FocusOutline);
case CSS::ValueID::LibwebPaletteSyntaxComment:
return palette.color(ColorRole::SyntaxComment);
case CSS::ValueID::LibwebPaletteSyntaxNumber:
return palette.color(ColorRole::SyntaxNumber);
case CSS::ValueID::LibwebPaletteSyntaxString:
return palette.color(ColorRole::SyntaxString);
case CSS::ValueID::LibwebPaletteSyntaxType:
return palette.color(ColorRole::SyntaxType);
case CSS::ValueID::LibwebPaletteSyntaxPunctuation:
return palette.color(ColorRole::SyntaxPunctuation);
case CSS::ValueID::LibwebPaletteSyntaxOperator:
return palette.color(ColorRole::SyntaxOperator);
case CSS::ValueID::LibwebPaletteSyntaxKeyword:
return palette.color(ColorRole::SyntaxKeyword);
case CSS::ValueID::LibwebPaletteSyntaxControlKeyword:
return palette.color(ColorRole::SyntaxControlKeyword);
case CSS::ValueID::LibwebPaletteSyntaxIdentifier:
return palette.color(ColorRole::SyntaxIdentifier);
case CSS::ValueID::LibwebPaletteSyntaxPreprocessorStatement:
return palette.color(ColorRole::SyntaxPreprocessorStatement);
case CSS::ValueID::LibwebPaletteSyntaxPreprocessorValue:
return palette.color(ColorRole::SyntaxPreprocessorValue);
default:
return {};
}
}
ImageStyleValue::ImageStyleValue(AK::URL const& url)
: StyleValue(Type::Image)
, m_url(url)
{
}
void ImageStyleValue::load_bitmap(DOM::Document& document)
{
if (m_bitmap)
return;
m_document = &document;
auto request = LoadRequest::create_for_url_on_page(m_url, document.page());
set_resource(ResourceLoader::the().load_resource(Resource::Type::Image, request));
}
void ImageStyleValue::resource_did_load()
{
if (!m_document)
return;
m_bitmap = resource()->bitmap();
// FIXME: Do less than a full repaint if possible?
if (m_document && m_document->browsing_context())
m_document->browsing_context()->set_needs_display({});
}
String ImageStyleValue::to_string() const
{
return serialize_a_url(m_url.to_string());
}
String ListStyleStyleValue::to_string() const
{
return String::formatted("{} {} {}", m_position->to_string(), m_image->to_string(), m_style_type->to_string());
}
String NumericStyleValue::to_string() const
{
return m_value.visit(
[](float value) {
return String::formatted("{}", value);
},
[](i64 value) {
return String::formatted("{}", value);
});
}
String OverflowStyleValue::to_string() const
{
return String::formatted("{} {}", m_overflow_x->to_string(), m_overflow_y->to_string());
}
String PercentageStyleValue::to_string() const
{
return m_percentage.to_string();
}
String PositionStyleValue::to_string() const
{
auto to_string = [](PositionEdge edge) {
switch (edge) {
case PositionEdge::Left:
return "left";
case PositionEdge::Right:
return "right";
case PositionEdge::Top:
return "top";
case PositionEdge::Bottom:
return "bottom";
}
VERIFY_NOT_REACHED();
};
return String::formatted("{} {} {} {}", to_string(m_edge_x), m_offset_x.to_string(), to_string(m_edge_y), m_offset_y.to_string());
}
String TextDecorationStyleValue::to_string() const
{
return String::formatted("{} {} {}", m_line->to_string(), m_style->to_string(), m_color->to_string());
}
String TransformationStyleValue::to_string() const
{
StringBuilder builder;
switch (m_transform_function) {
case TransformFunction::TranslateY:
builder.append("translateY");
break;
default:
VERIFY_NOT_REACHED();
}
builder.append('(');
builder.join(", ", m_values);
builder.append(')');
return builder.to_string();
}
String UnresolvedStyleValue::to_string() const
{
StringBuilder builder;
for (auto& value : m_values)
builder.append(value.to_string());
return builder.to_string();
}
String StyleValueList::to_string() const
{
String separator = "";
switch (m_separator) {
case Separator::Space:
separator = " ";
break;
case Separator::Comma:
separator = ", ";
break;
default:
VERIFY_NOT_REACHED();
}
return String::join(separator, m_values);
}
}
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