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/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "BorderValue.h"
#include "Color.h"
#include "FontCascade.h"
#include "NinePieceImage.h"
#include "RenderStyleConstants.h"
#include "TabSize.h"
#include "TransformOperations.h"
#include <wtf/IsoMalloc.h>
#include <wtf/OptionSet.h>
namespace WebCore {
class FillLayer;
class RenderStyle;
class ShadowData;
namespace Display {
// Style information needed to paint a Display::Box.
// All colors should be resolved to their painted values [visitedDependentColorWithColorFilter()].
// Should contain only absolute float values; no Lengths (which can contain calc values).
// Should be sharable between boxes with different geometry but the same style.
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(Style);
class Style {
WTF_MAKE_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(Style);
public:
enum class Flags : uint8_t {
Positioned = 1 << 0,
Floating = 1 << 1,
HasTransform = 1 << 2,
};
explicit Style(const RenderStyle&);
explicit Style(const RenderStyle&, const RenderStyle* styleForBackground);
const Color& color() const { return m_color; }
const Color& backgroundColor() const { return m_backgroundColor; }
bool hasBackground() const;
bool hasBackgroundImage() const;
const FillLayer* backgroundLayers() const { return m_backgroundLayers.get(); }
bool backgroundHasOpaqueTopLayer() const;
const ShadowData* boxShadow() const { return m_boxShadow.get(); }
std::optional<int> zIndex() const { return m_zIndex; }
bool isStackingContext() const { return m_zIndex.has_value(); }
bool isPositioned() const { return m_flags.contains(Flags::Positioned); }
bool isFloating() const { return m_flags.contains(Flags::Floating); }
// Just the transform property (not translate, rotate, scale).
bool hasTransform() const { return m_flags.contains(Flags::HasTransform); }
bool participatesInZOrderSorting() const { return isPositioned() || isStackingContext(); }
const FontCascade& fontCascade() const { return m_fontCascade; }
const FontMetrics& metricsOfPrimaryFont() const { return m_fontCascade.metricsOfPrimaryFont(); }
float opacity() const { return m_opacity; }
Overflow overflowX() const;
Overflow overflowY() const;
bool hasClippedOverflow() const { return m_overflowX != Overflow::Visible || m_overflowY != Overflow::Visible; }
WhiteSpace whiteSpace() const { return m_whiteSpace; }
bool autoWrap() const;
bool preserveNewline() const;
bool collapseWhiteSpace() const;
const TabSize& tabSize() const { return m_tabSize; }
private:
void setupBackground(const RenderStyle&);
void setIsPositioned(bool value) { m_flags.set({ Flags::Positioned }, value); }
void setIsFloating(bool value) { m_flags.set({ Flags::Floating }, value); }
void setHasTransform(bool value) { m_flags.set({ Flags::HasTransform }, value); }
Color m_color;
Color m_backgroundColor;
RefPtr<FillLayer> m_backgroundLayers;
std::unique_ptr<ShadowData> m_boxShadow;
Overflow m_overflowX;
Overflow m_overflowY;
FontCascade m_fontCascade;
WhiteSpace m_whiteSpace;
TabSize m_tabSize;
float m_opacity;
std::optional<int> m_zIndex;
OptionSet<Flags> m_flags;
};
} // namespace Display
} // namespace WebCore
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