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/*
* Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
* Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
* Copyright (C) 2023 Apple Inc. All rights reserved.
* Copyright (C) 2016 Google 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.
*/
#include "config.h"
#include "LegacyRenderSVGResourceMarker.h"
#include "GraphicsContext.h"
#include "LegacyRenderSVGResourceMarkerInlines.h"
#include "LegacyRenderSVGRoot.h"
#include <wtf/StackStats.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(LegacyRenderSVGResourceMarker);
LegacyRenderSVGResourceMarker::LegacyRenderSVGResourceMarker(SVGMarkerElement& element, RenderStyle&& style)
: LegacyRenderSVGResourceContainer(Type::LegacySVGResourceMarker, element, WTFMove(style))
{
}
LegacyRenderSVGResourceMarker::~LegacyRenderSVGResourceMarker() = default;
void LegacyRenderSVGResourceMarker::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
// Invalidate all resources if our layout changed.
if (everHadLayout() && selfNeedsLayout())
LegacyRenderSVGRoot::addResourceForClientInvalidation(this);
// RenderSVGHiddenContainer overwrites layout(). We need the
// layouting of LegacyRenderSVGContainer for calculating local
// transformations and repaint.
LegacyRenderSVGContainer::layout();
}
void LegacyRenderSVGResourceMarker::removeAllClientsFromCacheIfNeeded(bool markForInvalidation, SingleThreadWeakHashSet<RenderObject>* visitedRenderers)
{
markAllClientsForInvalidationIfNeeded(markForInvalidation ? LayoutAndBoundariesInvalidation : ParentOnlyInvalidation, visitedRenderers);
}
void LegacyRenderSVGResourceMarker::removeClientFromCache(RenderElement& client, bool markForInvalidation)
{
markClientForInvalidation(client, markForInvalidation ? BoundariesInvalidation : ParentOnlyInvalidation);
}
void LegacyRenderSVGResourceMarker::applyViewportClip(PaintInfo& paintInfo)
{
if (SVGRenderSupport::isOverflowHidden(*this))
paintInfo.context().clip(m_viewport);
}
FloatRect LegacyRenderSVGResourceMarker::markerBoundaries(RepaintRectCalculation repaintRectCalculation, const AffineTransform& markerTransformation) const
{
FloatRect coordinates = LegacyRenderSVGContainer::repaintRectInLocalCoordinates(repaintRectCalculation);
// Map repaint rect into parent coordinate space, in which the marker boundaries have to be evaluated
coordinates = localToParentTransform().mapRect(coordinates);
return markerTransformation.mapRect(coordinates);
}
const AffineTransform& LegacyRenderSVGResourceMarker::localToParentTransform() const
{
m_localToParentTransform = AffineTransform::makeTranslation(toFloatSize(m_viewport.location())) * viewportTransform();
return m_localToParentTransform;
// If this class were ever given a localTransform(), then the above would read:
// return viewportTranslation * localTransform() * viewportTransform();
}
FloatPoint LegacyRenderSVGResourceMarker::referencePoint() const
{
Ref markerElement = this->markerElement();
SVGLengthContext lengthContext(markerElement.ptr());
return FloatPoint(markerElement->refX().value(lengthContext), markerElement->refY().value(lengthContext));
}
std::optional<float> LegacyRenderSVGResourceMarker::angle() const
{
if (markerElement().orientType() == SVGMarkerOrientAngle)
return markerElement().orientAngle().value();
return std::nullopt;
}
AffineTransform LegacyRenderSVGResourceMarker::markerTransformation(const FloatPoint& origin, float autoAngle, float strokeWidth) const
{
bool useStrokeWidth = markerElement().markerUnits() == SVGMarkerUnitsStrokeWidth;
AffineTransform transform;
transform.translate(origin);
transform.rotate(angle().value_or(autoAngle));
transform = markerContentTransformation(transform, referencePoint(), useStrokeWidth ? strokeWidth : -1);
return transform;
}
void LegacyRenderSVGResourceMarker::draw(PaintInfo& paintInfo, const AffineTransform& transform)
{
// An empty viewBox disables rendering.
if (markerElement().hasAttribute(SVGNames::viewBoxAttr) && markerElement().hasEmptyViewBox())
return;
PaintInfo info(paintInfo);
GraphicsContextStateSaver stateSaver(info.context());
info.applyTransform(transform);
LegacyRenderSVGContainer::paint(info, IntPoint());
}
AffineTransform LegacyRenderSVGResourceMarker::markerContentTransformation(const AffineTransform& contentTransformation, const FloatPoint& origin, float strokeWidth) const
{
// The 'origin' coordinate maps to SVGs refX/refY, given in coordinates relative to the viewport established by the marker
FloatPoint mappedOrigin = viewportTransform().mapPoint(origin);
AffineTransform transformation = contentTransformation;
if (strokeWidth != -1)
transformation.scaleNonUniform(strokeWidth, strokeWidth);
transformation.translate(-mappedOrigin);
return transformation;
}
AffineTransform LegacyRenderSVGResourceMarker::viewportTransform() const
{
return markerElement().viewBoxToViewTransform(m_viewport.width(), m_viewport.height());
}
void LegacyRenderSVGResourceMarker::calcViewport()
{
if (!selfNeedsLayout())
return;
Ref markerElement = this->markerElement();
SVGLengthContext lengthContext(markerElement.ptr());
float w = markerElement->markerWidth().value(lengthContext);
float h = markerElement->markerHeight().value(lengthContext);
m_viewport = FloatRect(0, 0, w, h);
}
}
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