103 lines
4.4 KiB
C++
103 lines
4.4 KiB
C++
/*
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* Copyright (C) 2013 Google 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 are
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* met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "CSSPropertyNames.h"
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#include <optional>
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#include <wtf/Assertions.h>
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namespace WebCore {
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class RenderStyle;
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class RenderView;
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class CSSToLengthConversionData {
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public:
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CSSToLengthConversionData(const RenderStyle* style, const RenderStyle* rootStyle, const RenderStyle* parentStyle, const RenderView* renderView, float zoom, std::optional<CSSPropertyID> propertyToCompute = std::nullopt, RenderStyle* viewportDependencyDetectionStyle = nullptr)
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: m_style(style)
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, m_rootStyle(rootStyle)
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, m_parentStyle(parentStyle)
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, m_viewportDependencyDetectionStyle(viewportDependencyDetectionStyle ? viewportDependencyDetectionStyle : const_cast<RenderStyle*>(style))
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, m_renderView(renderView)
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, m_zoom(zoom)
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, m_propertyToCompute(propertyToCompute)
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{
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ASSERT(zoom > 0);
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}
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CSSToLengthConversionData(const RenderStyle* style, const RenderStyle* rootStyle, const RenderStyle* parentStyle, const RenderView* renderView, std::optional<CSSPropertyID> propertyToCompute = std::nullopt)
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: m_style(style)
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, m_rootStyle(rootStyle)
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, m_parentStyle(parentStyle)
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, m_viewportDependencyDetectionStyle(const_cast<RenderStyle*>(style))
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, m_renderView(renderView)
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, m_propertyToCompute(propertyToCompute)
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{
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}
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CSSToLengthConversionData() = default;
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const RenderStyle* style() const { return m_style; }
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const RenderStyle* rootStyle() const { return m_rootStyle; }
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const RenderStyle* parentStyle() const { return m_parentStyle; }
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float zoom() const;
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bool computingFontSize() const { return m_propertyToCompute == CSSPropertyFontSize; }
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bool computingLineHeight() const { return m_propertyToCompute == CSSPropertyLineHeight; }
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CSSPropertyID propertyToCompute() const { return m_propertyToCompute.value_or(CSSPropertyInvalid); }
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const RenderView* renderView() const { return m_renderView; }
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double viewportWidthFactor() const;
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double viewportHeightFactor() const;
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double viewportMinFactor() const;
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double viewportMaxFactor() const;
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CSSToLengthConversionData copyWithAdjustedZoom(float newZoom) const
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{
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return CSSToLengthConversionData(m_style, m_rootStyle, m_parentStyle, m_renderView, newZoom, m_propertyToCompute);
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}
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CSSToLengthConversionData copyWithAdjustedZoomAndPropertyToCompute(float zoom, std::optional<CSSPropertyID> propertyToCompute) const
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{
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return CSSToLengthConversionData(m_style, m_rootStyle, m_parentStyle, m_renderView, zoom, propertyToCompute);
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}
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private:
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const RenderStyle* m_style { nullptr };
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const RenderStyle* m_rootStyle { nullptr };
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const RenderStyle* m_parentStyle { nullptr };
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RenderStyle* m_viewportDependencyDetectionStyle { nullptr };
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const RenderView* m_renderView { nullptr };
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std::optional<float> m_zoom;
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std::optional<CSSPropertyID> m_propertyToCompute;
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};
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} // namespace WebCore
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