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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
* Copyright (C) 2009 Google, Inc.
*
* 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 "LegacyRenderSVGViewportContainer.h"
#include "GraphicsContext.h"
#include "RenderView.h"
#include "SVGElementTypeHelpers.h"
#include "SVGSVGElement.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(LegacyRenderSVGViewportContainer);
LegacyRenderSVGViewportContainer::LegacyRenderSVGViewportContainer(SVGSVGElement& element, RenderStyle&& style)
: LegacyRenderSVGContainer(element, WTFMove(style))
, m_didTransformToRootUpdate(false)
, m_isLayoutSizeChanged(false)
, m_needsTransformUpdate(true)
{
}
SVGSVGElement& LegacyRenderSVGViewportContainer::svgSVGElement() const
{
return downcast<SVGSVGElement>(LegacyRenderSVGContainer::element());
}
void LegacyRenderSVGViewportContainer::determineIfLayoutSizeChanged()
{
m_isLayoutSizeChanged = svgSVGElement().hasRelativeLengths() && selfNeedsLayout();
}
void LegacyRenderSVGViewportContainer::applyViewportClip(PaintInfo& paintInfo)
{
if (SVGRenderSupport::isOverflowHidden(*this))
paintInfo.context().clip(m_viewport);
}
void LegacyRenderSVGViewportContainer::calcViewport()
{
SVGSVGElement& element = svgSVGElement();
SVGLengthContext lengthContext(&element);
FloatRect newViewport(element.x().value(lengthContext), element.y().value(lengthContext), element.width().value(lengthContext), element.height().value(lengthContext));
if (m_viewport == newViewport)
return;
m_viewport = newViewport;
setNeedsBoundariesUpdate();
setNeedsTransformUpdate();
}
bool LegacyRenderSVGViewportContainer::calculateLocalTransform()
{
m_didTransformToRootUpdate = m_needsTransformUpdate || SVGRenderSupport::transformToRootChanged(parent());
if (!m_needsTransformUpdate)
return false;
m_localToParentTransform = AffineTransform::makeTranslation(toFloatSize(m_viewport.location())) * viewportTransform();
m_needsTransformUpdate = false;
return true;
}
AffineTransform LegacyRenderSVGViewportContainer::viewportTransform() const
{
return svgSVGElement().viewBoxToViewTransform(m_viewport.width(), m_viewport.height());
}
bool LegacyRenderSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& pointInParent)
{
// Respect the viewport clip (which is in parent coords)
if (!SVGRenderSupport::isOverflowHidden(*this))
return true;
return m_viewport.contains(pointInParent);
}
void LegacyRenderSVGViewportContainer::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
// An empty viewBox disables rendering.
if (svgSVGElement().hasEmptyViewBox())
return;
LegacyRenderSVGContainer::paint(paintInfo, paintOffset);
}
}
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