#include "config.h"
#if ENABLE(SVG)
#include "RenderSVGRoot.h"
#include "GraphicsContext.h"
#include "RenderPath.h"
#include "RenderSVGContainer.h"
#include "RenderView.h"
#include "SVGLength.h"
#include "SVGRenderSupport.h"
#include "SVGResourceClipper.h"
#include "SVGResourceFilter.h"
#include "SVGResourceMasker.h"
#include "SVGSVGElement.h"
#include "SVGStyledElement.h"
#include "SVGURIReference.h"
namespace WebCore {
RenderSVGRoot::RenderSVGRoot(SVGStyledElement* node)
: RenderContainer(node)
{
setReplaced(true);
}
RenderSVGRoot::~RenderSVGRoot()
{
}
short RenderSVGRoot::lineHeight(bool b, bool isRootLineBox) const
{
return height() + marginTop() + marginBottom();
}
short RenderSVGRoot::baselinePosition(bool b, bool isRootLineBox) const
{
return height() + marginTop() + marginBottom();
}
void RenderSVGRoot::calcPrefWidths()
{
ASSERT(prefWidthsDirty());
int width = calcReplacedWidth() + paddingLeft() + paddingRight() + borderLeft() + borderRight();
if (style()->width().isPercent() || (style()->width().isAuto() && style()->height().isPercent())) {
m_minPrefWidth = 0;
m_maxPrefWidth = width;
} else
m_minPrefWidth = m_maxPrefWidth = width;
setPrefWidthsDirty(false);
}
void RenderSVGRoot::layout()
{
ASSERT(needsLayout());
calcViewport();
view()->disableLayoutState();
IntRect oldBounds = m_absoluteBounds;
IntRect oldOutlineBox;
bool checkForRepaint = checkForRepaintDuringLayout() && selfNeedsLayout();
if (checkForRepaint)
oldOutlineBox = absoluteOutlineBox();
calcWidth();
calcHeight();
m_absoluteBounds = absoluteClippedOverflowRect();
SVGSVGElement* svg = static_cast<SVGSVGElement*>(element());
m_width = static_cast<int>(m_width * svg->currentScale());
m_height = static_cast<int>(m_height * svg->currentScale());
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if (selfNeedsLayout()) child->setNeedsLayout(true);
child->layoutIfNeeded();
ASSERT(!child->needsLayout());
}
if (checkForRepaint)
repaintAfterLayoutIfNeeded(oldBounds, oldOutlineBox);
view()->enableLayoutState();
setNeedsLayout(false);
}
void RenderSVGRoot::applyContentTransforms(PaintInfo& paintInfo, int parentX, int parentY)
{
IntPoint origin;
origin.move(parentX, parentY);
origin.move(m_x, m_y);
origin.move(borderLeft(), borderTop());
origin.move(paddingLeft(), paddingTop());
if (origin.x() || origin.y()) {
paintInfo.context->concatCTM(AffineTransform().translate(origin.x(), origin.y()));
paintInfo.rect.move(-origin.x(), -origin.y());
}
AffineTransform ctm = RenderContainer::absoluteTransform();
paintInfo.rect.move(static_cast<int>(ctm.e()), static_cast<int>(ctm.f()));
SVGSVGElement* svg = static_cast<SVGSVGElement*>(element());
paintInfo.context->concatCTM(AffineTransform().scale(svg->currentScale()));
if (!viewport().isEmpty()) {
if (style()->overflowX() != OVISIBLE)
paintInfo.context->clip(enclosingIntRect(viewport()));
paintInfo.context->concatCTM(AffineTransform().translate(viewport().x(), viewport().y()));
}
paintInfo.context->concatCTM(AffineTransform().translate(svg->currentTranslate().x(), svg->currentTranslate().y()));
}
void RenderSVGRoot::paint(PaintInfo& paintInfo, int parentX, int parentY)
{
if (paintInfo.context->paintingDisabled())
return;
calcViewport();
SVGSVGElement* svg = static_cast<SVGSVGElement*>(element());
if (viewport().width() <= 0. || viewport().height() <= 0.)
return;
if (hasBoxDecorations() && (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection))
paintBoxDecorations(paintInfo, m_x + parentX, m_y + parentY);
if (!firstChild()) {
#if ENABLE(SVG_FILTERS)
const SVGRenderStyle* svgStyle = style()->svgStyle();
AtomicString filterId(SVGURIReference::getTarget(svgStyle->filter()));
SVGResourceFilter* filter = getFilterById(document(), filterId);
if (!filter)
#endif
return;
}
RenderObject::PaintInfo childPaintInfo(paintInfo);
childPaintInfo.context->save();
applyContentTransforms(childPaintInfo, parentX, parentY);
SVGResourceFilter* filter = 0;
FloatRect boundingBox = relativeBBox(true);
if (childPaintInfo.phase == PaintPhaseForeground)
prepareToRenderSVGContent(this, childPaintInfo, boundingBox, filter);
childPaintInfo.context->concatCTM(svg->viewBoxToViewTransform(width(), height()));
RenderContainer::paint(childPaintInfo, 0, 0);
if (childPaintInfo.phase == PaintPhaseForeground)
finishRenderSVGContent(this, childPaintInfo, boundingBox, filter, paintInfo.context);
childPaintInfo.context->restore();
if ((childPaintInfo.phase == PaintPhaseOutline || childPaintInfo.phase == PaintPhaseSelfOutline) && style()->outlineWidth() && style()->visibility() == VISIBLE)
paintOutline(childPaintInfo.context, m_absoluteBounds.x(), m_absoluteBounds.y(), m_absoluteBounds.width(), m_absoluteBounds.height(), style());
}
FloatRect RenderSVGRoot::viewport() const
{
return m_viewport;
}
void RenderSVGRoot::calcViewport()
{
SVGElement* svgelem = static_cast<SVGElement*>(element());
if (svgelem->hasTagName(SVGNames::svgTag)) {
SVGSVGElement* svg = static_cast<SVGSVGElement*>(element());
if (!selfNeedsLayout() && !svg->hasRelativeValues())
return;
float w, h;
SVGLength width = svg->width();
if (width.unitType() == LengthTypePercentage && svg->hasSetContainerSize())
w = svg->relativeWidthValue();
else
w = width.value();
SVGLength height = svg->height();
if (height.unitType() == LengthTypePercentage && svg->hasSetContainerSize())
h = svg->relativeHeightValue();
else
h = height.value();
m_viewport = FloatRect(0, 0, w, h);
}
}
IntRect RenderSVGRoot::absoluteClippedOverflowRect()
{
IntRect repaintRect;
for (RenderObject* current = firstChild(); current != 0; current = current->nextSibling())
repaintRect.unite(current->absoluteClippedOverflowRect());
#if ENABLE(SVG_FILTERS)
SVGResourceFilter* filter = getFilterById(document(), SVGURIReference::getTarget(style()->svgStyle()->filter()));
if (filter)
repaintRect.unite(enclosingIntRect(filter->filterBBoxForItemBBox(repaintRect)));
#endif
return repaintRect;
}
void RenderSVGRoot::addFocusRingRects(GraphicsContext* graphicsContext, int, int)
{
graphicsContext->addFocusRingRect(m_absoluteBounds);
}
void RenderSVGRoot::absoluteRects(Vector<IntRect>& rects, int, int)
{
for (RenderObject* current = firstChild(); current != 0; current = current->nextSibling())
current->absoluteRects(rects, 0, 0);
}
AffineTransform RenderSVGRoot::absoluteTransform() const
{
AffineTransform ctm = RenderContainer::absoluteTransform();
ctm.translate(m_x, m_y);
SVGSVGElement* svg = static_cast<SVGSVGElement*>(element());
ctm.scale(svg->currentScale());
ctm.translate(svg->currentTranslate().x(), svg->currentTranslate().y());
ctm.translate(viewport().x(), viewport().y());
return svg->viewBoxToViewTransform(width(), height()) * ctm;
}
FloatRect RenderSVGRoot::relativeBBox(bool includeStroke) const
{
FloatRect rect;
RenderObject* current = firstChild();
for (; current != 0; current = current->nextSibling()) {
FloatRect childBBox = current->relativeBBox(includeStroke);
FloatRect mappedBBox = current->localTransform().mapRect(childBBox);
if (current->isSVGContainer())
mappedBBox = static_cast<RenderSVGContainer*>(current)->viewportTransform().mapRect(mappedBBox);
rect.unite(mappedBBox);
}
return rect;
}
AffineTransform RenderSVGRoot::localTransform() const
{
return AffineTransform();
}
bool RenderSVGRoot::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int _x, int _y, int _tx, int _ty, HitTestAction hitTestAction)
{
AffineTransform ctm = RenderContainer::absoluteTransform();
int sx = (_tx - static_cast<int>(ctm.e())); int sy = (_ty - static_cast<int>(ctm.f()));
if (!viewport().isEmpty()
&& style()->overflowX() == OHIDDEN
&& style()->overflowY() == OHIDDEN) {
int tx = m_x - _tx + sx;
int ty = m_y - _ty + sy;
IntRect overflowBox = overflowRect(false);
overflowBox.move(tx, ty);
ctm.translate(viewport().x(), viewport().y());
double localX, localY;
ctm.inverse().map(_x - _tx, _y - _ty, &localX, &localY);
if (!overflowBox.contains((int)localX, (int)localY))
return false;
}
for (RenderObject* child = lastChild(); child; child = child->previousSibling()) {
if (child->nodeAtPoint(request, result, _x - sx, _y - sy, 0, 0, hitTestAction)) {
updateHitTestResult(result, IntPoint(_x - _tx, _y - _ty));
return true;
}
}
return false;
}
}
#endif // ENABLE(SVG)