genesis-3d_engine/Engine/foundation/http/svg/svgpagewriter.cc

/****************************************************************************
Copyright (c) 2008, Radon Labs GmbH
Copyright (c) 2011-2013,WebJet Business Division,CYOU
 
http://www.genesis-3d.com.cn

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/

#if (__WIN32__||__APPLE__)


#include "stdneb.h"
#include "http/svg/svgpagewriter.h"

namespace Http
{
__ImplementClass(Http::SvgPageWriter, 'SVGW', IO::StreamWriter);

using namespace Util;
using namespace IO;
using namespace Math;

//------------------------------------------------------------------------------
/**
*/
SvgPageWriter::SvgPageWriter() :
    canvasWidth(100),
    canvasHeight(100),
    unitWidth(100),
    unitHeight(100)
{
    // empty
}

//------------------------------------------------------------------------------
/**
*/
SvgPageWriter::~SvgPageWriter()
{
    // empty
}

//------------------------------------------------------------------------------
/**
*/
bool
SvgPageWriter::Open()
{
    if (StreamWriter::Open())
    {
        // create an XmlWriter and attach it to our stream
        this->xmlWriter = XmlWriter::Create();
        this->xmlWriter->SetStream(this->stream);
        this->xmlWriter->Open();

        // write SVG root element
        this->xmlWriter->BeginNode("svg");
        this->xmlWriter->SetString("xmlns", "http://www.w3.org/2000/svg");
        this->xmlWriter->SetInt("width", this->canvasWidth);
        this->xmlWriter->SetInt("height", this->canvasHeight);
        String viewBox;
        viewBox.Format("0 0 %d %d", this->unitWidth, this->unitHeight);
        this->xmlWriter->SetString("viewBox", viewBox);
        this->xmlWriter->SetString("preserveAspectRatio", "none");

        return true;
    }
    return false;
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::Close()
{
    n_assert(this->IsOpen());

    // close SVG page
    this->xmlWriter->EndNode();

    // close XML writer
    this->xmlWriter->Close();
    this->xmlWriter = 0;

    // set MIME type on our stream
    this->stream->SetMediaType(MediaType("image/svg+xml"));

    // call parent class
    StreamWriter::Close();
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::BeginNode(const Util::String& nodeName)
{
    this->xmlWriter->BeginNode(nodeName);
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::EndNode()
{
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::SetString(const Util::String& name, const Util::String& value)
{
    this->xmlWriter->SetString(name, value);
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::BeginTransformGroup(const float2& translate, float rotate, const float2& scale)
{
    // format the attribute string
    String str;
    str.Format("translate(%.3f,%.3f) rotate(%.3f) scale(%.3f,%.3f)", 
        translate.x(), translate.y(),
        rotate,
        scale.x(), scale.y());

    // write XML element
    this->xmlWriter->BeginNode("g");
    this->xmlWriter->SetString("transform", str);
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::BeginPaintGroup(const Util::String& fillColor, const Util::String& strokeColor, int strokeWidth)
{
    n_assert(fillColor.IsValid());
    n_assert(strokeColor.IsValid());

    this->xmlWriter->BeginNode("g");
    this->xmlWriter->SetString("fill", fillColor);
    this->xmlWriter->SetString("stroke", strokeColor);
    this->xmlWriter->SetInt("stroke-width", strokeWidth);
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::BeginTextGroup(int fontSize, const Util::String& textColor)
{
    this->xmlWriter->BeginNode("g");
    this->xmlWriter->SetInt("font-size", fontSize);
    this->xmlWriter->SetString("fill", textColor);
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::EndGroup()
{
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::Rect(float x, float y, float w, float h)
{
    this->xmlWriter->BeginNode("rect");
        this->xmlWriter->SetFloat("x", x);
        this->xmlWriter->SetFloat("y", y);
        this->xmlWriter->SetFloat("width", w);
        this->xmlWriter->SetFloat("height", h);
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::Circle(float x, float y, float r)
{
    this->xmlWriter->BeginNode("circle");
        this->xmlWriter->SetFloat("cx", x);
        this->xmlWriter->SetFloat("cy", y);
        this->xmlWriter->SetFloat("r", r);
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::Ellipse(float x, float y, float rx, float ry)
{
    this->xmlWriter->BeginNode("ellipse");
        this->xmlWriter->SetFloat("cx", x);
        this->xmlWriter->SetFloat("cy", y);
        this->xmlWriter->SetFloat("rx", rx);
        this->xmlWriter->SetFloat("ry", ry);
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::Line(float x1, float y1, float x2, float y2)
{
    this->xmlWriter->BeginNode("line");
        this->xmlWriter->SetFloat("x1", x1);
        this->xmlWriter->SetFloat("y1", y1);
        this->xmlWriter->SetFloat("x2", x2);
        this->xmlWriter->SetFloat("y2", y2);
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
    Note: due to a limitation for the length of XML attributes in TinyXML
    the array size for a single poly primitive should be about 200 max.
*/
void
SvgPageWriter::PolyLine(const Array<float2>& points)
{
    // build coordinates string
    String str;
    str.Reserve(points.Size() * 20);
    IndexT i;
    for (i = 0; i < points.Size(); i++)
    {
        str.AppendFloat(points[i].x());
        str.Append(",");
        str.AppendFloat(points[i].y());
        str.Append(" ");
    }

    // write XML element
    this->xmlWriter->BeginNode("polyline");
        this->xmlWriter->SetString("points", str);
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
    Note: due to a limitation for the length of XML attributes in TinyXML
    the array size for a single poly primitive should be about 200 max.
*/
void
SvgPageWriter::Polygon(const Array<float2>& points)
{
    // build coordinates string
    String str;
    str.Reserve(points.Size() * 20);
    IndexT i;
    for (i = 0; i < points.Size(); i++)
    {
        str.AppendFloat(points[i].x());
        str.Append(",");
        str.AppendFloat(points[i].y());
        str.Append(" ");
    }

    // write XML element
    this->xmlWriter->BeginNode("polygon");
        this->xmlWriter->SetString("points", str);
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::Text(float x, float y, const String& text)
{
    this->xmlWriter->BeginNode("text");
        this->xmlWriter->SetFloat("x", x);
        this->xmlWriter->SetFloat("y", y);
        this->xmlWriter->WriteContent(text);
    this->xmlWriter->EndNode();
}

//------------------------------------------------------------------------------
/**
*/
void
SvgPageWriter::WriteContent(const Util::String& text)
{
    this->xmlWriter->WriteContent(text);
}
} // namespace Http

#endif