root/src/swft/SVGColor.cpp

#include "SVGColor.h"
#include "SVGColors.h"

#define TMP_STRLEN 0xFF

using namespace std;

namespace SWF {

SVGColor::SVGColor() {
        r = 0;
        g = 0;
        b = 0;
        a = 0;
}

SVGColor::SVGColor(unsigned char _r, unsigned char _g, unsigned char _b, unsigned char _a) {
        setColor(_r, _g, _b, _a);
}

void SVGColor::setColor(unsigned char _r, unsigned char _g, unsigned char _b, unsigned char _a) {
        r = _r;
        g = _g;
        b = _b;
        a = _a;
}

void SVGColor::setAlpha(unsigned char _a) {
        a = _a;
}

void SVGColor::setAlpha(double _a) {
        a = (unsigned char)(_a * 255.0);
}

bool SVGColor::parse(string &color) {
        if(color == "none" || color == "") {
                return false;
        } else {
                if(color[0] == '#') {
                        if(color.length() == 4) {
                                int c[3];
                                
                                for(int i = 0; i < 3; i++)
                                        sscanf(color.substr(1 + i, 1).c_str(), "%x", &c[i]);
                                
                                r = (c[0] << 4) + c[0];
                                g = (c[1] << 4) + c[1];
                                b = (c[2] << 4) + c[2];
                                a = 255;
                        } else if (color.length() == 7) {
                                int c[3];
                                
                                for(int i = 0; i < 3; i++)
                                        sscanf(color.substr(1 + i*2, 2).c_str(), "%x", &c[i]);
                                
                                r = c[0];
                                g = c[1];
                                b = c[2];
                                a = 255;
                        } else {
                                cerr << "WARNING: can't parse color" << endl;
                                return false;
                        }
                } else if(color.substr(0, 3) == "rgb") {
                        double pR, pG, pB;
                        if(sscanf(color.c_str(), "rgb(%lf%%,%lf%%,%lf%%)", &pR, &pG, &pB) == 3) {
                                r = (unsigned char)(pR / 100.0 * 255.0);
                                g = (unsigned char)(pG / 100.0 * 255.0);
                                b = (unsigned char)(pB / 100.0 * 255.0);
                                a = 255;
                        } else if(sscanf(color.c_str(), "rgb(%hhu,%hhu,%hhu)", &r, &g, &b) == 3) {
                                a = 255;
                                return true;
                        } else {
                                cerr << "WARNING: can't parse rgb color" << endl;       
                                return false;
                        }
                } else {
                        for(int i = 0; i < SVG_COLOR_COUNT; i++) {
                                if(svgColors[i].name == color) {
                                        r = svgColors[i].r;
                                        g = svgColors[i].g;
                                        b = svgColors[i].b;
                                        a = 255;
                                        return true;
                                }
                        }
                        cerr << "WARNING: color name not found (" << color << ")" << endl;      
                        return false;
                }
        }
        return true;
}

bool SVGColor::parse(const char *color) {
        string tmp(color);
        return parse(tmp);
}

void SVGColor::writeXML(xmlNodePtr parent) {
        xmlNodePtr node;
        char tmp[TMP_STRLEN];

        node = xmlNewChild(parent, NULL, (const xmlChar *)"Color", NULL);
        snprintf(tmp, TMP_STRLEN, "%i", r);
        xmlSetProp(node, (const xmlChar *)"red", (const xmlChar *)&tmp);
        snprintf(tmp, TMP_STRLEN, "%i", g);
        xmlSetProp(node, (const xmlChar *)"green", (const xmlChar *)&tmp);
        snprintf(tmp, TMP_STRLEN, "%i", b);
        xmlSetProp(node, (const xmlChar *)"blue", (const xmlChar *)&tmp);
        snprintf(tmp, TMP_STRLEN, "%i", a);
        xmlSetProp(node, (const xmlChar *)"alpha", (const xmlChar *)&tmp);
}

}