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/* libwpg
* Copyright (C) 2006 Ariya Hidayat (ariya@kde.org)
* Copyright (C) 2005 Fridrich Strba (fridrich.strba@bluewin.ch)
*
* 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For further information visit http://libwpg.sourceforge.net
*/
/* "This product is not manufactured, approved, or supported by
* Corel Corporation or Corel Corporation Limited."
*/
#include "WPGSVGGenerator.h"
libwpg::WPGSVGGenerator::WPGSVGGenerator(std::ostream & output_sink): m_pen(libwpg::WPGPen()), m_brush(libwpg::WPGBrush()), m_fillRule(AlternatingFill), m_gradientIndex(1), m_outputSink(output_sink), m_oldLocale(output_sink.getloc())
{
// set the stream's locale to "C" when printing floats
std::locale c_locale("C");
m_outputSink.imbue(c_locale);
}
libwpg::WPGSVGGenerator::~WPGSVGGenerator()
{
m_outputSink.imbue(m_oldLocale);
}
void libwpg::WPGSVGGenerator::startDocument(double width, double height)
{
m_outputSink << "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n";
m_outputSink << "<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"";
m_outputSink << " \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n";
// m_outputSink << "<!-- Created with wpg2svg/libwpg " << LIBWPG_VERSION_STRING << " -->\n";
m_outputSink << "<svg version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" ";
m_outputSink << "xmlns:xlink=\"http://www.w3.org/1999/xlink\" ";
m_outputSink << "width=\"" << 72*width << "\" height=\"" << 72*height << "\" >\n";
m_gradientIndex = 1;
}
void libwpg::WPGSVGGenerator::endDocument()
{
m_outputSink << "</svg>\n";
}
void libwpg::WPGSVGGenerator::setPen(const libwpg::WPGPen& pen)
{
m_pen = pen;
}
void libwpg::WPGSVGGenerator::setBrush(const libwpg::WPGBrush& brush)
{
m_brush = brush;
if(m_brush.style == libwpg::WPGBrush::Gradient)
{
double angle = m_brush.gradient.angle();
m_outputSink << "<defs>\n";
m_outputSink << " <linearGradient id=\"grad" << m_gradientIndex++ << "\" >\n";
for(unsigned c = 0; c < m_brush.gradient.count(); c++)
{
// round to nearest percentage
int ofs = (int)((100.0*m_brush.gradient.stopOffset(c))+0.5);
libwpg::WPGColor color = m_brush.gradient.stopColor(c);
m_outputSink << " <stop offset=\"" << ofs << "%\"";
// set stream to %02x formatting
size_t old_stream_size = m_outputSink.width(2);
m_outputSink << std::hex;
m_outputSink << " stop-color=\"#" << (color.red <= 0xF ? "0" : "") << color.red;
m_outputSink << "" << (color.green <= 0xF ? "0" : "") << color.green;
m_outputSink << "" << (color.blue <= 0xF ? "0" : "") << color.blue << "\" />\n";
// reset stream formatting
m_outputSink << std::dec;
m_outputSink.width(old_stream_size);
}
m_outputSink << " </linearGradient>\n";
// not a simple horizontal gradient
if(angle != -90.0)
{
m_outputSink << " <linearGradient xlink:href=\"#grad" << m_gradientIndex-1 << "\"";
m_outputSink << " id=\"grad" << m_gradientIndex++ << "\" ";
m_outputSink << "x1=\"0\" y1=\"0\" x2=\"0\" y2=\"1\" ";
m_outputSink << "gradientTransform=\"rotate(" << angle << ")\" ";
m_outputSink << "gradientUnits=\"objectBoundingBox\" >\n";
m_outputSink << " </linearGradient>\n";
}
m_outputSink << "</defs>\n";
}
}
void libwpg::WPGSVGGenerator::setFillRule(FillRule rule)
{
m_fillRule = rule;
}
void libwpg::WPGSVGGenerator::startLayer(unsigned int id)
{
m_outputSink << "<g id=\"Layer" << id << "\" >\n";
}
void libwpg::WPGSVGGenerator::endLayer(unsigned int)
{
m_outputSink << "</g>\n";
}
void libwpg::WPGSVGGenerator::drawRectangle(const libwpg::WPGRect& rect, double rx, double ry)
{
m_outputSink << "<rect ";
m_outputSink << "x=\"" << 72*rect.x1 << "\" y=\"" << 72*rect.y1 << "\" ";
m_outputSink << "width=\"" << 72*rect.width() << "\" height=\"" << 72*rect.height() << "\" ";
if((rx !=0) || (ry !=0))
m_outputSink << "rx=\"" << 72*rx << "\" ry=\"" << 72*ry << "\" ";
writeStyle();
m_outputSink << "/>\n";
}
void libwpg::WPGSVGGenerator::drawEllipse(const libwpg::WPGPoint& center, double rx, double ry)
{
m_outputSink << "<ellipse ";
m_outputSink << "cx=\"" << 72*center.x << "\" cy=\"" << 72*center.y << "\" ";
m_outputSink << "rx=\"" << 72*rx << "\" ry=\"" << 72*ry << "\" ";
writeStyle();
m_outputSink << "/>\n";
}
void libwpg::WPGSVGGenerator::drawPolygon(const libwpg::WPGPointArray& vertices)
{
if(vertices.count() < 2)
return;
if(vertices.count() == 2)
{
const libwpg::WPGPoint& p1 = vertices[0];
const libwpg::WPGPoint& p2 = vertices[1];
m_outputSink << "<line ";
m_outputSink << "x1=\"" << 72*p1.x << "\" y1=\"" << 72*p1.y << "\" ";
m_outputSink << "x2=\"" << 72*p2.x << "\" y2=\"" << 72*p2.y << "\"\n";
writeStyle();
m_outputSink << "/>\n";
}
else
{
m_outputSink << "<polyline ";
m_outputSink << "points=\"";
for(unsigned i = 0; i < vertices.count(); i++)
{
m_outputSink << 72*vertices[i].x << " " << 72*vertices[i].y;
if(i < vertices.count()-1) m_outputSink << ", ";
}
m_outputSink << "\"\n";
writeStyle();
m_outputSink << "/>\n";
}
}
void libwpg::WPGSVGGenerator::drawPath(const libwpg::WPGPath& path)
{
m_outputSink << "<path d=\"";
for(unsigned i = 0; i < path.count(); i++)
{
libwpg::WPGPathElement element = path.element(i);
libwpg::WPGPoint point = element.point;
switch(element.type)
{
case libwpg::WPGPathElement::MoveToElement:
m_outputSink << "\n M" << 72*point.x << "," << 72*point.y << " ";
break;
case libwpg::WPGPathElement::LineToElement:
m_outputSink << "\n L" << 72*point.x << "," << 72*point.y << " ";
break;
case libwpg::WPGPathElement::CurveToElement:
m_outputSink << "C";
m_outputSink << 72*element.extra1.x << "," << 72*element.extra1.y << " ";
m_outputSink << 72*element.extra2.x << "," << 72*element.extra2.y << " ";
m_outputSink << 72*point.x << "," << 72*point.y;
break;
default:
break;
}
}
if(path.closed)
m_outputSink << "Z";
m_outputSink << "\" \n";
writeStyle();
m_outputSink << "/>\n";
}
// create "style" attribute based on current pen and brush
void libwpg::WPGSVGGenerator::writeStyle()
{
m_outputSink << "style=\"";
const libwpg::WPGColor& color = m_pen.foreColor;
m_outputSink << "stroke-width: " << 72*m_pen.width << "; ";
if(m_pen.width > 0.0)
{
m_outputSink << "stroke: rgb(" << color.red << "," << color.green << "," << color.blue << "); ";
if(color.alpha != 0)
// alpha = 0 means opacity = 1.0, alpha = 256 means opacity = 0
m_outputSink << "stroke-opacity: " << 1.0-(color.alpha/256.0) << "; ";
}
if(!m_pen.solid)
{
m_outputSink << "stroke-dasharray: ";
for(unsigned i = 0; i < m_pen.dashArray.count(); i++)
{
m_outputSink << 72*m_pen.dashArray.at(i)*m_pen.width;
if(i < m_pen.dashArray.count()-1)
m_outputSink << ", ";
}
m_outputSink << "; ";
}
if(m_brush.style == libwpg::WPGBrush::NoBrush)
m_outputSink << "fill: none; ";
if(m_fillRule == WPGSVGGenerator::WindingFill)
m_outputSink << "fill-rule: nonzero; ";
else if(m_fillRule == WPGSVGGenerator::AlternatingFill)
m_outputSink << "fill-rule: evenodd; ";
if(m_brush.style == libwpg::WPGBrush::Gradient)
m_outputSink << "fill: url(#grad" << m_gradientIndex-1 << "); ";
if(m_brush.style == libwpg::WPGBrush::Solid)
m_outputSink << "fill: rgb(" << m_brush.foreColor.red << "," << m_brush.foreColor.green << "," << m_brush.foreColor.blue << "); ";
m_outputSink << "\""; // style
}
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