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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* (C) 2000 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#pragma once
#include <WebCore/BorderValue.h>
#include <WebCore/RectCorners.h>
#include <WebCore/RectEdges.h>
#include <WebCore/StyleBorderImage.h>
#include <WebCore/StyleBorderRadius.h>
#include <WebCore/StyleCornerShapeValue.h>
namespace WebCore {
using namespace CSS::Literals;
class BorderData {
friend class RenderStyleProperties;
public:
using Radii = Style::BorderRadius;
bool hasBorder() const
{
return m_edges.anyOf([](const auto& edge) { return edge.nonZero(); });
}
bool hasVisibleBorder() const
{
return m_edges.anyOf([](const auto& edge) { return edge.isVisible(); });
}
bool hasBorderImage() const
{
return !m_image.source().isNone();
}
bool hasBorderRadius() const
{
return m_radii.anyOf([](auto& corner) { return !Style::isKnownEmpty(corner); });
}
template<BoxSide side>
Style::LineWidth borderEdgeWidth() const
{
if (m_edges[side].style() == BorderStyle::None || m_edges[side].style() == BorderStyle::Hidden)
return 0_css_px;
if (m_image.overridesBorderWidths()) {
if (auto fixedBorderWidthValue = m_image.width().values[side].tryFixed())
return Style::LineWidth { fixedBorderWidthValue->unresolvedValue() };
}
return m_edges[side].width();
}
Style::LineWidth borderLeftWidth() const { return borderEdgeWidth<BoxSide::Left>(); }
Style::LineWidth borderRightWidth() const { return borderEdgeWidth<BoxSide::Right>(); }
Style::LineWidth borderTopWidth() const { return borderEdgeWidth<BoxSide::Top>(); }
Style::LineWidth borderBottomWidth() const { return borderEdgeWidth<BoxSide::Bottom>(); }
Style::LineWidthBox borderWidth() const
{
return { borderTopWidth(), borderRightWidth(), borderBottomWidth(), borderLeftWidth() };
}
// `BorderEdgesView` provides a RectEdges-like interface for efficiently working with
// the values stored in BorderValue by edge. This allows `RenderStyle` code generation
// to work as if the `border-{edge}-*`properties were stored in a RectEdges, while
// instead storing them grouped together by edge in BorderValue.
//
// FIXME: Currently this is only implemented for `border-{edge}-color` and `border-{edge}-style`,
// due to `border-{edge}-width` needing to return the computed value from borderEdgeWidth() from
// its getter.
template<bool isConst, template<BoxSide> typename Accessor, typename GetterType, typename SetterType = GetterType>
struct BorderEdgesView {
GetterType top() const { return Accessor<BoxSide::Top>::get(borderData); }
GetterType right() const { return Accessor<BoxSide::Right>::get(borderData); }
GetterType bottom() const { return Accessor<BoxSide::Bottom>::get(borderData); }
GetterType left() const { return Accessor<BoxSide::Left>::get(borderData); }
void setTop(SetterType value) requires (!isConst) { Accessor<BoxSide::Top>::set(borderData, std::forward<SetterType>(value)); }
void setRight(SetterType value) requires (!isConst){ Accessor<BoxSide::Right>::set(borderData, std::forward<SetterType>(value)); }
void setBottom(SetterType value) requires (!isConst){ Accessor<BoxSide::Bottom>::set(borderData, std::forward<SetterType>(value)); }
void setLeft(SetterType value) requires (!isConst) { Accessor<BoxSide::Left>::set(borderData, std::forward<SetterType>(value)); }
std::conditional_t<isConst, const BorderData&, BorderData&> borderData;
};
template<BoxSide side> struct ColorAccessor {
static const Style::Color& get(const BorderData& data) { return data.edges()[side].m_color; }
static void set(BorderData& data, Style::Color&& color) { data.edges()[side].m_color = WTFMove(color); }
};
using BorderColorsView = BorderEdgesView<false, ColorAccessor, const Style::Color&, Style::Color&&>;
using BorderColorsConstView = BorderEdgesView<true, ColorAccessor, const Style::Color&, Style::Color&&>;
BorderColorsView colors() { return { .borderData = *this }; }
BorderColorsConstView colors() const { return { .borderData = *this }; }
template<BoxSide side> struct StyleAccessor {
static unsigned get(const BorderData& data) { return data.edges()[side].m_style; }
static void set(BorderData& data, unsigned style) { data.edges()[side].m_style = style; }
};
using BorderStylesView = BorderEdgesView<false, StyleAccessor, unsigned>;
using BorderStylesConstView = BorderEdgesView<true, StyleAccessor, unsigned>;
BorderStylesView styles() { return { .borderData = *this }; }
BorderStylesConstView styles() const { return { .borderData = *this }; }
RectEdges<BorderValue>& edges() { return m_edges; }
const RectEdges<BorderValue>& edges() const { return m_edges; }
BorderValue& left() { return m_edges.left(); }
BorderValue& right() { return m_edges.right(); }
BorderValue& top() { return m_edges.top(); }
BorderValue& bottom() { return m_edges.bottom(); }
const BorderValue& left() const { return m_edges.left(); }
const BorderValue& right() const { return m_edges.right(); }
const BorderValue& top() const { return m_edges.top(); }
const BorderValue& bottom() const { return m_edges.bottom(); }
Style::BorderImage& image() { return m_image; }
const Style::BorderImage& image() const { return m_image; }
Style::BorderRadius& radii() { return m_radii; }
const Style::BorderRadius& radii() const { return m_radii; }
Style::BorderRadiusValue& topLeftRadius() { return m_radii.topLeft(); }
Style::BorderRadiusValue& topRightRadius() { return m_radii.topRight(); }
Style::BorderRadiusValue& bottomLeftRadius() { return m_radii.bottomLeft(); }
Style::BorderRadiusValue& bottomRightRadius() { return m_radii.bottomRight(); }
const Style::BorderRadiusValue& topLeftRadius() const { return m_radii.topLeft(); }
const Style::BorderRadiusValue& topRightRadius() const { return m_radii.topRight(); }
const Style::BorderRadiusValue& bottomLeftRadius() const { return m_radii.bottomLeft(); }
const Style::BorderRadiusValue& bottomRightRadius() const { return m_radii.bottomRight(); }
const Style::CornerShapeValue& topLeftCornerShape() const { return m_cornerShapes.topLeft(); }
const Style::CornerShapeValue& topRightCornerShape() const { return m_cornerShapes.topRight(); }
const Style::CornerShapeValue& bottomLeftCornerShape() const { return m_cornerShapes.bottomLeft(); }
const Style::CornerShapeValue& bottomRightCornerShape() const { return m_cornerShapes.bottomRight(); }
bool isEquivalentForPainting(const BorderData& other, bool currentColorDiffers) const;
void dump(TextStream&, DumpStyleValues = DumpStyleValues::All) const;
bool operator==(const BorderData&) const = default;
private:
bool containsCurrentColor() const;
RectEdges<BorderValue> m_edges;
Style::BorderImage m_image;
Style::BorderRadius m_radii { Style::BorderRadiusValue { 0_css_px, 0_css_px } };
Style::CornerShape m_cornerShapes { Style::CornerShapeValue::round() };
};
WTF::TextStream& operator<<(WTF::TextStream&, const BorderData&);
} // namespace WebCore
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