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