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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, 2014 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/GraphicsTypes.h>
#include <WebCore/RenderStyleConstants.h>
#include <WebCore/StyleBackgroundSize.h>
#include <WebCore/StyleFillLayers.h>
#include <WebCore/StyleImageOrNone.h>
#include <WebCore/StylePosition.h>
#include <WebCore/StyleRepeatStyle.h>
#include <wtf/RefPtr.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
class RenderElement;
namespace Style {
struct MaskLayer {
static constexpr FillLayerType type() { return FillLayerType::Mask; }
MaskLayer(CSS::Keyword::None);
MaskLayer(ImageOrNone&&);
MaskLayer(RefPtr<StyleImage>&&);
const ImageOrNone& image() const { return m_image; }
const Position& position() const { return m_position; }
const PositionX& xPosition() const { return m_position.x; }
const PositionY& yPosition() const { return m_position.y; }
const BackgroundSize& size() const { return m_size; }
FillBox clip() const { return static_cast<FillBox>(m_clip); }
FillBox origin() const { return static_cast<FillBox>(m_origin); }
RepeatStyle repeat() const { return m_repeat; }
CompositeOperator composite() const { return static_cast<CompositeOperator>(m_composite); }
MaskMode maskMode() const { return static_cast<MaskMode>(m_maskMode); }
static constexpr FillAttachment attachment() { return FillAttachment::ScrollBackground; }
static constexpr BlendMode blendMode() { return BlendMode::Normal; }
// https://drafts.fxtf.org/css-masking/#the-mask-composite
// If there is no further mask layer, the compositing operator must be ignored.
CompositeOperator compositeForPainting(bool isLastLayer) const
{
if (isLastLayer)
return CompositeOperator::SourceOver;
return composite();
}
bool isEmpty() const { return m_size.isEmpty(); }
void setImage(ImageOrNone&& image) { m_image = WTFMove(image); }
void setXPosition(PositionX&& positionX) { m_position.x = WTFMove(positionX); }
void setYPosition(PositionY&& positionY) { m_position.y = WTFMove(positionY); }
void setSize(BackgroundSize&& size) { m_size = WTFMove(size); }
void setClip(FillBox b) { m_clip = static_cast<unsigned>(b); }
void setOrigin(FillBox b) { m_origin = static_cast<unsigned>(b); }
void setRepeat(RepeatStyle r) { m_repeat = r; }
void setComposite(CompositeOperator c) { m_composite = static_cast<unsigned>(c); }
void setMaskMode(MaskMode m) { m_maskMode = static_cast<unsigned>(m); }
static ImageOrNone initialFillImage() { return CSS::Keyword::None { }; }
static FillBox initialFillClip() { return FillBox::BorderBox; }
static FillBox initialFillOrigin() { return FillBox::BorderBox; }
static RepeatStyle initialFillRepeat() { return { .values { FillRepeat::Repeat, FillRepeat::Repeat } }; }
static CompositeOperator initialFillComposite() { return CompositeOperator::SourceOver; }
static BackgroundSize initialFillSize() { return CSS::Keyword::Auto { }; }
static PositionX initialFillXPosition() { using namespace CSS::Literals; return 0_css_percentage; }
static PositionY initialFillYPosition() { using namespace CSS::Literals; return 0_css_percentage; }
static MaskMode initialFillMaskMode() { return MaskMode::MatchSource; }
bool hasImage() const { return m_image.isImage(); }
bool hasOpaqueImage(const RenderElement&) const;
bool hasRepeatXY() const { return repeat() == FillRepeat::Repeat; }
bool clipOccludesNextLayers() const { return m_clip == m_clipMax; }
void setClipMax(FillBox clipMax) const { m_clipMax = static_cast<unsigned>(clipMax); }
bool operator==(const MaskLayer&) const;
private:
ImageOrNone m_image;
Position m_position;
BackgroundSize m_size;
RepeatStyle m_repeat;
PREFERRED_TYPE(FillBox) unsigned m_clip : FillBoxBitWidth;
PREFERRED_TYPE(FillBox) unsigned m_origin : FillBoxBitWidth;
PREFERRED_TYPE(CompositeOperator) unsigned m_composite : 4;
PREFERRED_TYPE(MaskMode) unsigned m_maskMode : 2;
PREFERRED_TYPE(FillBox) mutable unsigned m_clipMax : FillBoxBitWidth; // maximum m_clip value from this to bottom layer
};
using MaskLayers = FillLayers<MaskLayer>;
WTF::TextStream& operator<<(WTF::TextStream&, const MaskLayer&);
} // namespace Style
} // namespace WebCore
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