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/*
* Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2014 Apple Inc. All rights reserved.
* 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.
*
*/
#include "config.h"
#include "StyleMaskLayer.h"
#include "CachedImage.h"
#include "StylePrimitiveKeyword+Logging.h"
#include "StylePrimitiveNumericTypes+Logging.h"
#include <wtf/PointerComparison.h>
#include <wtf/text/TextStream.h>
namespace WebCore {
namespace Style {
MaskLayer::MaskLayer(ImageOrNone&& image)
: m_image(WTFMove(image))
, m_position({ MaskLayer::initialFillXPosition(), MaskLayer::initialFillYPosition() })
, m_size(MaskLayer::initialFillSize())
, m_repeat(MaskLayer::initialFillRepeat())
, m_clip(static_cast<unsigned>(MaskLayer::initialFillClip()))
, m_origin(static_cast<unsigned>(MaskLayer::initialFillOrigin()))
, m_composite(static_cast<unsigned>(MaskLayer::initialFillComposite()))
, m_maskMode(static_cast<unsigned>(MaskLayer::initialFillMaskMode()))
{
}
MaskLayer::MaskLayer(CSS::Keyword::None)
: MaskLayer { ImageOrNone { CSS::Keyword::None { } } }
{
}
MaskLayer::MaskLayer(RefPtr<StyleImage>&& image)
: MaskLayer { ImageOrNone { WTFMove(image) } }
{
}
bool MaskLayer::operator==(const MaskLayer& other) const
{
// NOTE: Default operator== is not used due to exclusion of m_clipMax.
return m_image == other.m_image
&& m_position == other.m_position
&& m_clip == other.m_clip
&& m_composite == other.m_composite
&& m_origin == other.m_origin
&& m_repeat == other.m_repeat
&& m_size == other.m_size
&& m_maskMode == other.m_maskMode;
}
bool MaskLayer::hasOpaqueImage(const RenderElement& renderer) const
{
RefPtr image = m_image.tryStyleImage();
if (!image)
return false;
if (composite() == CompositeOperator::Clear
|| composite() == CompositeOperator::Copy)
return true;
return blendMode() == BlendMode::Normal
&& composite() == CompositeOperator::SourceOver
&& image->knownToBeOpaque(renderer);
}
TextStream& operator<<(TextStream& ts, const MaskLayer& layer)
{
TextStream::GroupScope scope(ts);
ts << "mask-layer"_s;
ts.dumpProperty("image"_s, layer.image());
ts.dumpProperty("position"_s, layer.position());
ts.dumpProperty("size"_s, layer.size());
ts.dumpProperty("repeat"_s, layer.repeat());
ts.dumpProperty("clip"_s, layer.clip());
ts.dumpProperty("origin"_s, layer.origin());
ts.dumpProperty("composite"_s, layer.composite());
ts.dumpProperty("mask-mode"_s, layer.maskMode());
return ts;
}
} // namespace Style
} // namespace WebCore
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