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c3d61020e7
Calc simplification (which I'm working towards) involves repeatedly deriving a new calculation tree from an existing one, and in many cases, either the whole result or a portion of it will be identical to that of the original. Using RefPtr lets us avoid making unnecessary copies. As a bonus it will also make it easier to return either `this` or a new node. In future we could also cache commonly-used nodes, similar to how we do so for 1px and 0px LengthStyleValues and various keywords.
51 lines
1.9 KiB
C++
51 lines
1.9 KiB
C++
/*
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* Copyright (c) 2023, MacDue <macdue@dueutil.tech>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "EdgeStyleValue.h"
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namespace Web::CSS {
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String EdgeStyleValue::to_string(SerializationMode mode) const
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{
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if (mode == CSSStyleValue::SerializationMode::ResolvedValue) {
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if (edge() == PositionEdge::Right || edge() == PositionEdge::Bottom) {
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if (offset().is_percentage()) {
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auto flipped_percentage = 100 - offset().percentage().value();
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return Percentage(flipped_percentage).to_string();
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}
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// FIXME: Figure out how to get the proper calculation context here
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CalculationContext context = {};
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Vector<NonnullRefPtr<CalculationNode>> sum_parts;
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sum_parts.append(NumericCalculationNode::create(Percentage(100), context));
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if (offset().is_length()) {
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sum_parts.append(NegateCalculationNode::create(NumericCalculationNode::create(offset().length(), context)));
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} else {
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// FIXME: Flip calculated offsets (convert CalculatedStyleValue to CalculationNode, then negate and append)
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return to_string(CSSStyleValue::SerializationMode::Normal);
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}
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auto flipped_absolute = CalculatedStyleValue::create(SumCalculationNode::create(move(sum_parts)), CSSNumericType(CSSNumericType::BaseType::Length, 1), context);
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return flipped_absolute->to_string(mode);
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}
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return offset().to_string();
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}
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StringBuilder builder;
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if (m_properties.edge.has_value())
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builder.append(CSS::to_string(m_properties.edge.value()));
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if (m_properties.edge.has_value() && m_properties.offset.has_value())
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builder.append(' ');
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if (m_properties.offset.has_value())
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builder.append(m_properties.offset->to_string());
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return builder.to_string_without_validation();
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}
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}
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