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/*
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004-2017 Apple Inc. All rights reserved.
*
* 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 "Color.h"
#include "FloatPoint.h"
#include "InlineTextBoxStyle.h"
#include "RenderStyleConstants.h"
#include <wtf/OptionSet.h>
namespace WebCore {
class FilterOperations;
class FontCascade;
class GraphicsContext;
class RenderObject;
class RenderStyle;
class ShadowData;
class TextRun;
class TextDecorationPainter {
public:
TextDecorationPainter(GraphicsContext&, const FontCascade&, const ShadowData*, const FilterOperations*, bool isPrinting, WritingMode);
struct Styles {
bool operator==(const Styles&) const;
struct DecorationStyleAndColor {
Color color;
TextDecorationStyle decorationStyle { TextDecorationStyle::Solid };
};
DecorationStyleAndColor underline;
DecorationStyleAndColor overline;
DecorationStyleAndColor linethrough;
};
struct BackgroundDecorationGeometry {
FloatPoint textOrigin;
FloatPoint boxOrigin;
float textBoxWidth { 0.f };
float textDecorationThickness { 0.f };
float underlineOffset { 0.f };
float overlineOffset { 0.f };
float linethroughCenter { 0.f };
float clippingOffset { 0.f };
WavyStrokeParameters wavyStrokeParameters;
};
void paintBackgroundDecorations(const RenderStyle&, const TextRun&, const BackgroundDecorationGeometry&, OptionSet<TextDecorationLine>, const Styles&);
struct ForegroundDecorationGeometry {
FloatPoint boxOrigin;
float textBoxWidth { 0.f };
float textDecorationThickness { 0.f };
float linethroughCenter { 0.f };
WavyStrokeParameters wavyStrokeParameters;
};
void paintForegroundDecorations(const ForegroundDecorationGeometry&, const Styles&);
static Color decorationColor(const RenderStyle&, OptionSet<PaintBehavior> paintBehavior = { });
static Styles stylesForRenderer(const RenderObject&, OptionSet<TextDecorationLine> requestedDecorations, bool firstLineStyle = false, OptionSet<PaintBehavior> paintBehavior = { }, PseudoId = PseudoId::None);
static OptionSet<TextDecorationLine> textDecorationsInEffectForStyle(const TextDecorationPainter::Styles&);
private:
void paintLineThrough(const ForegroundDecorationGeometry&, const Color&, const Styles&);
GraphicsContext& m_context;
bool m_isPrinting { false };
WritingMode m_writingMode;
const ShadowData* m_shadow { nullptr };
const FilterOperations* m_shadowColorFilter { nullptr };
const FontCascade& m_font;
};
} // namespace WebCore
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