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/*
* Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(SVG)
#include "SVGResourceMarker.h"
#include "TransformationMatrix.h"
#include "GraphicsContext.h"
#include "RenderSVGViewportContainer.h"
#include "TextStream.h"
#include <wtf/StdLibExtras.h>
namespace WebCore {
SVGResourceMarker::SVGResourceMarker()
: SVGResource()
, m_refX(0.0)
, m_refY(0.0)
, m_angle(-1) // just like using setAutoAngle()
, m_marker(0)
, m_useStrokeWidth(true)
{
}
SVGResourceMarker::~SVGResourceMarker()
{
}
void SVGResourceMarker::setMarker(RenderSVGViewportContainer* marker)
{
m_marker = marker;
}
void SVGResourceMarker::setRef(double refX, double refY)
{
m_refX = refX;
m_refY = refY;
}
void SVGResourceMarker::draw(GraphicsContext* context, const FloatRect& rect, double x, double y, double strokeWidth, double angle)
{
if (!m_marker)
return;
DEFINE_STATIC_LOCAL(HashSet<SVGResourceMarker*>, currentlyDrawingMarkers, ());
// avoid drawing circular marker references
if (currentlyDrawingMarkers.contains(this))
return;
currentlyDrawingMarkers.add(this);
TransformationMatrix transform;
transform.translate(x, y);
transform.rotate(m_angle > -1 ? m_angle : angle);
// refX and refY are given in coordinates relative to the viewport established by the marker, yet they affect
// the translation performed on the viewport itself.
TransformationMatrix viewportTransform;
if (m_useStrokeWidth)
viewportTransform.scaleNonUniform(strokeWidth, strokeWidth);
viewportTransform *= m_marker->viewportTransform();
double refX, refY;
viewportTransform.map(m_refX, m_refY, refX, refY);
transform.translate(-refX, -refY);
if (m_useStrokeWidth)
transform.scaleNonUniform(strokeWidth, strokeWidth);
// FIXME: PaintInfo should be passed into this method instead of being created here
// FIXME: bounding box fractions are lost
RenderObject::PaintInfo info(context, enclosingIntRect(rect), PaintPhaseForeground, 0, 0, 0);
context->save();
context->concatCTM(transform);
m_marker->setDrawsContents(true);
m_marker->paint(info, 0, 0);
m_marker->setDrawsContents(false);
context->restore();
m_cachedBounds = transform.mapRect(m_marker->absoluteClippedOverflowRect());
currentlyDrawingMarkers.remove(this);
}
FloatRect SVGResourceMarker::cachedBounds() const
{
return m_cachedBounds;
}
TextStream& SVGResourceMarker::externalRepresentation(TextStream& ts) const
{
ts << "[type=MARKER]"
<< " [angle=";
if (angle() == -1)
ts << "auto" << "]";
else
ts << angle() << "]";
ts << " [ref x=" << refX() << " y=" << refY() << "]";
return ts;
}
SVGResourceMarker* getMarkerById(Document* document, const AtomicString& id)
{
SVGResource* resource = getResourceById(document, id);
if (resource && resource->isMarker())
return static_cast<SVGResourceMarker*>(resource);
return 0;
}
} // namespace WebCore
#endif
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