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/*
Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
2004, 2005, 2007 Rob Buis <buis@kde.org>
2007 Eric Seidel <eric@webkit.org>
2009 Google, Inc.
Copyright (C) Research In Motion Limited 2009-2010. 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
aint 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"
#if ENABLE(SVG)
#include "RenderSVGViewportContainer.h"
#include "GraphicsContext.h"
#include "RenderView.h"
#include "SVGSVGElement.h"
namespace WebCore {
RenderSVGViewportContainer::RenderSVGViewportContainer(SVGStyledElement* node)
: RenderSVGContainer(node)
{
}
void RenderSVGViewportContainer::applyViewportClip(PaintInfo& paintInfo)
{
if (SVGRenderSupport::isOverflowHidden(this))
paintInfo.context->clip(m_viewport);
}
void RenderSVGViewportContainer::calcViewport()
{
SVGElement* element = static_cast<SVGElement*>(node());
if (element->hasTagName(SVGNames::svgTag)) {
SVGSVGElement* svg = static_cast<SVGSVGElement*>(element);
FloatRect oldViewport = m_viewport;
m_viewport = FloatRect(svg->x().value(svg)
, svg->y().value(svg)
, svg->width().value(svg)
, svg->height().value(svg));
if (oldViewport != m_viewport)
setNeedsBoundariesUpdate();
}
}
AffineTransform RenderSVGViewportContainer::viewportTransform() const
{
if (node()->hasTagName(SVGNames::svgTag)) {
SVGSVGElement* svg = static_cast<SVGSVGElement*>(node());
return svg->viewBoxToViewTransform(m_viewport.width(), m_viewport.height());
}
return AffineTransform();
}
const AffineTransform& RenderSVGViewportContainer::localToParentTransform() const
{
AffineTransform viewportTranslation(viewportTransform());
m_localToParentTransform = viewportTranslation.translateRight(m_viewport.x(), m_viewport.y());
return m_localToParentTransform;
// If this class were ever given a localTransform(), then the above would read:
// return viewportTransform() * localTransform() * viewportTranslation;
}
bool RenderSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& pointInParent)
{
// Respect the viewport clip (which is in parent coords)
if (!SVGRenderSupport::isOverflowHidden(this))
return true;
return m_viewport.contains(pointInParent);
}
}
#endif // ENABLE(SVG)
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