LabelLegend.h

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//
// This file is part of the MADELINE 2 program 
// written by Edward H. Trager and Ritu Khanna
// Copyright (c) 2005 by the
// Regents of the University of Michigan.
// All Rights Reserved.
// 
// The latest version of this program is available from:
// 
//   http://eyegene.ophthy.med.umich.edu/madeline/
//   
// Released under the GNU General Public License.
// A copy of the GPL is included in the distribution
// package of this software, or see:
// 
//   http://www.gnu.org/copyleft/
//   
// ... for licensing details.
// 

#ifndef LABELLEGEND_INCLUDED
#define LABELLEGEND_INCLUDED

#include "DrawingMetrics.h"
#include "LabelSet.h"
#include "DrawingLabelManager.h"
#include "DrawingCanvas.h"
#include "SVG.h"
#include "Utf8String.h"
#include "Legend.h"

class LabelLegend : public Legend{
        
private:
        const LabelSet * _labelSet;
        
public:
        
        LabelLegend() {}
        
        void setLabelSet(const LabelSet *const labelSet){
                
                _labelSet = labelSet;
                //_width  = DrawingMetrics::getIconInterval()  + 2*DrawingMetrics::getLabelMargin();
                _width = DrawingMetrics::getIconInterval(); 
                _height = _labelSet->getNumberOfLabels()*DrawingMetrics::getLineHeight() + 2*DrawingMetrics::getLabelMargin();
                
        }
        
        
        
        //void draw(std::ostringstream& os,SVG* psvg,DrawingLabelManager* plm,const double x,const double y);
        void draw(std::ostringstream& os,SVG* psvg,DrawingLabelManager* plm,const double x,const double y){
                
                // lineHeight:
                double lineHeight = DrawingMetrics::getLineHeight();
                double labelMargin = DrawingMetrics::getLabelMargin();
                std::vector<UTF8String> labels = _labelSet->getLabelNameSet();
                
                // Determine a starting point to draw the key:
                double xstt = x - DrawingMetrics::getHorizontalInterval() + labelMargin;
                double ystt = y; 
                
                // Wrap labels in a group:
                psvg->startGroup(os,"legend");
                psvg->drawRectangle(os,xstt,ystt,_width-2*labelMargin,_height,"keyBox");
                ystt+= lineHeight;
                xstt+=DrawingMetrics::getHorizontalInterval() - labelMargin;
                for(unsigned i=0;i<labels.size();i++){
                        psvg->drawText(os,xstt,ystt, plm->fitStringToLabelWidth( labels[i] ) );
                        ystt+=lineHeight;
                }
                psvg->endGroup(os);
        }
        
};

#endif

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