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/*
* Copyright (C) Research In Motion Limited 2010. All rights reserved.
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2008 Rob Buis <buis@kde.org>
* Copyright (C) 2005, 2007 Eric Seidel <eric@webkit.org>
* Copyright (C) 2009 Google, Inc.
*
* 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
* along 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 "SVGMarkerLayoutInfo.h"
#include "RenderSVGResourceMarker.h"
namespace WebCore {
SVGMarkerLayoutInfo::SVGMarkerLayoutInfo()
: m_midMarker(0)
, m_elementIndex(0)
, m_strokeWidth(0)
{
}
SVGMarkerLayoutInfo::~SVGMarkerLayoutInfo()
{
}
static inline void processStartAndMidMarkers(void* infoPtr, const PathElement* element)
{
SVGMarkerLayoutInfo& info = *reinterpret_cast<SVGMarkerLayoutInfo*>(infoPtr);
SVGMarkerData& markerData = info.markerData();
int& elementIndex = info.elementIndex();
// First update the outslope for the previous element
markerData.updateOutslope(element->points[0]);
// Draw the marker for the previous element
RenderSVGResourceMarker* marker = markerData.marker();
if (elementIndex > 0 && marker)
info.addLayoutedMarker(marker, markerData.origin(), markerData.currentAngle());
// Update our marker data for this element
markerData.updateMarkerDataForPathElement(element);
// After drawing the start marker, switch to drawing mid markers
if (elementIndex == 1)
markerData.updateTypeAndMarker(SVGMarkerData::Mid, info.midMarker());
++elementIndex;
}
FloatRect SVGMarkerLayoutInfo::calculateBoundaries(RenderSVGResourceMarker* startMarker, RenderSVGResourceMarker* midMarker, RenderSVGResourceMarker* endMarker, float strokeWidth, const Path& path)
{
m_layout.clear();
m_midMarker = midMarker;
m_strokeWidth = strokeWidth;
m_elementIndex = 0;
m_markerData = SVGMarkerData(SVGMarkerData::Start, startMarker);
path.apply(this, processStartAndMidMarkers);
if (endMarker) {
m_markerData.updateTypeAndMarker(SVGMarkerData::End, endMarker);
addLayoutedMarker(endMarker, m_markerData.origin(), m_markerData.currentAngle());
}
if (m_layout.isEmpty())
return FloatRect();
Vector<MarkerLayout>::iterator it = m_layout.begin();
Vector<MarkerLayout>::iterator end = m_layout.end();
FloatRect bounds;
for (; it != end; ++it) {
MarkerLayout& layout = *it;
RenderSVGResourceMarker* markerContent = layout.marker;
ASSERT(markerContent);
bounds.unite(markerContent->markerBoundaries(layout.matrix));
}
return bounds;
}
void SVGMarkerLayoutInfo::clear()
{
m_midMarker = 0;
m_elementIndex = 0;
m_strokeWidth = 0;
m_markerData.updateTypeAndMarker(SVGMarkerData::Unknown, 0);
m_layout.clear();
}
void SVGMarkerLayoutInfo::drawMarkers(PaintInfo& paintInfo)
{
if (m_layout.isEmpty())
return;
Vector<MarkerLayout>::iterator it = m_layout.begin();
Vector<MarkerLayout>::iterator end = m_layout.end();
for (; it != end; ++it) {
MarkerLayout& layout = *it;
layout.marker->draw(paintInfo, layout.matrix);
}
}
void SVGMarkerLayoutInfo::addLayoutedMarker(RenderSVGResourceMarker* marker, const FloatPoint& origin, float angle)
{
ASSERT(marker);
m_layout.append(MarkerLayout(marker, marker->markerTransformation(origin, angle, m_strokeWidth)));
}
}
#endif // ENABLE(SVG)
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