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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>
This file is part of the KDE project
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 "SVGMarkerElement.h"
#include "SVGSVGElement.h"
namespace WebCore {
RenderSVGViewportContainer::RenderSVGViewportContainer(SVGStyledElement* node)
: RenderSVGContainer(node)
{
setReplaced(true);
}
RenderSVGViewportContainer::~RenderSVGViewportContainer()
{
}
void RenderSVGViewportContainer::layout()
{
ASSERT(needsLayout());
calcViewport();
// Arbitrary affine transforms are incompatible with LayoutState.
view()->disableLayoutState();
IntRect oldBounds = m_absoluteBounds;
IntRect oldOutlineBox;
bool checkForRepaint = checkForRepaintDuringLayout() && selfNeedsLayout();
if (checkForRepaint)
oldOutlineBox = absoluteOutlineBox();
calcBounds();
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 RenderSVGViewportContainer::paint(PaintInfo& paintInfo, int parentX, int parentY)
{
// A value of zero disables rendering of the element.
if (!viewport().isEmpty() && (viewport().width() <= 0. || viewport().height() <= 0.))
return;
RenderSVGContainer::paint(paintInfo, parentX, parentY);
}
void RenderSVGViewportContainer::applyContentTransforms(PaintInfo& paintInfo)
{
if (!viewport().isEmpty()) {
if (style()->overflowX() != OVISIBLE)
paintInfo.context->clip(enclosingIntRect(viewport())); // FIXME: Eventually we'll want float-precision clipping
paintInfo.context->concatCTM(AffineTransform().translate(viewport().x(), viewport().y()));
}
RenderSVGContainer::applyContentTransforms(paintInfo);
}
void RenderSVGViewportContainer::applyAdditionalTransforms(PaintInfo& paintInfo)
{
paintInfo.context->concatCTM(viewportTransform());
RenderSVGContainer::applyAdditionalTransforms(paintInfo);
}
FloatRect RenderSVGViewportContainer::viewport() const
{
return m_viewport;
}
void RenderSVGViewportContainer::calcViewport()
{
SVGElement* svgelem = static_cast<SVGElement*>(element());
if (svgelem->hasTagName(SVGNames::svgTag)) {
SVGSVGElement* svg = static_cast<SVGSVGElement*>(element());
if (!selfNeedsLayout() && !svg->hasRelativeValues())
return;
float x = svg->x().value(svg);
float y = svg->y().value(svg);
float w = svg->width().value(svg);
float h = svg->height().value(svg);
m_viewport = FloatRect(x, y, w, h);
} else if (svgelem->hasTagName(SVGNames::markerTag)) {
if (!selfNeedsLayout())
return;
SVGMarkerElement* svg = static_cast<SVGMarkerElement*>(element());
float w = svg->markerWidth().value(svg);
float h = svg->markerHeight().value(svg);
m_viewport = FloatRect(0, 0, w, h);
}
}
AffineTransform RenderSVGViewportContainer::viewportTransform() const
{
if (element()->hasTagName(SVGNames::svgTag)) {
SVGSVGElement* svg = static_cast<SVGSVGElement*>(element());
return svg->viewBoxToViewTransform(viewport().width(), viewport().height());
} else if (element()->hasTagName(SVGNames::markerTag)) {
SVGMarkerElement* marker = static_cast<SVGMarkerElement*>(element());
return marker->viewBoxToViewTransform(viewport().width(), viewport().height());
}
return AffineTransform();
}
AffineTransform RenderSVGViewportContainer::absoluteTransform() const
{
AffineTransform ctm = RenderObject::absoluteTransform();
ctm.translate(viewport().x(), viewport().y());
return viewportTransform() * ctm;
}
bool RenderSVGViewportContainer::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int _x, int _y, int _tx, int _ty, HitTestAction hitTestAction)
{
if (!viewport().isEmpty()
&& style()->overflowX() == OHIDDEN
&& style()->overflowY() == OHIDDEN) {
// Check if we need to do anything at all.
IntRect overflowBox = overflowRect(false);
overflowBox.move(_tx, _ty);
AffineTransform ctm = RenderObject::absoluteTransform();
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;
}
int sx = 0;
int sy = 0;
// Respect parent translation offset for non-outermost <svg> elements.
// Outermost <svg> element is handled by RenderSVGRoot.
if (element()->hasTagName(SVGNames::svgTag)) {
sx = _tx;
sy = _ty;
}
for (RenderObject* child = lastChild(); child; child = child->previousSibling()) {
if (child->nodeAtPoint(request, result, _x - sx, _y - sy, _tx, _ty, hitTestAction)) {
updateHitTestResult(result, IntPoint(_x - _tx, _y - _ty));
return true;
}
}
// Spec: Only graphical elements can be targeted by the mouse, period.
// 16.4: "If there are no graphics elements whose relevant graphics content is under the pointer (i.e., there is no target element), the event is not dispatched."
return false;
}
}
#endif // ENABLE(SVG)
// vim:ts=4:noet
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