RenderSVGViewportContainer.cpp [plain text]
#include "config.h"
#include "RenderSVGViewportContainer.h"
#include "GraphicsContext.h"
#include "RenderView.h"
#include "SVGNames.h"
#include "SVGSVGElement.h"
namespace WebCore {
RenderSVGViewportContainer::RenderSVGViewportContainer(SVGSVGElement& element, Ref<RenderStyle>&& style)
: RenderSVGContainer(element, WTF::move(style))
, m_didTransformToRootUpdate(false)
, m_isLayoutSizeChanged(false)
, m_needsTransformUpdate(true)
{
}
SVGSVGElement& RenderSVGViewportContainer::svgSVGElement() const
{
return downcast<SVGSVGElement>(RenderSVGContainer::element());
}
void RenderSVGViewportContainer::determineIfLayoutSizeChanged()
{
m_isLayoutSizeChanged = svgSVGElement().hasRelativeLengths() && selfNeedsLayout();
}
void RenderSVGViewportContainer::applyViewportClip(PaintInfo& paintInfo)
{
if (SVGRenderSupport::isOverflowHidden(*this))
paintInfo.context->clip(m_viewport);
}
void RenderSVGViewportContainer::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 RenderSVGViewportContainer::calculateLocalTransform()
{
m_didTransformToRootUpdate = m_needsTransformUpdate || SVGRenderSupport::transformToRootChanged(parent());
if (!m_needsTransformUpdate)
return false;
m_localToParentTransform = AffineTransform::translation(m_viewport.x(), m_viewport.y()) * viewportTransform();
m_needsTransformUpdate = false;
return true;
}
AffineTransform RenderSVGViewportContainer::viewportTransform() const
{
return svgSVGElement().viewBoxToViewTransform(m_viewport.width(), m_viewport.height());
}
bool RenderSVGViewportContainer::pointIsInsideViewportClip(const FloatPoint& pointInParent)
{
if (!SVGRenderSupport::isOverflowHidden(*this))
return true;
return m_viewport.contains(pointInParent);
}
void RenderSVGViewportContainer::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (svgSVGElement().hasEmptyViewBox())
return;
RenderSVGContainer::paint(paintInfo, paintOffset);
}
}