+
+
+#include "../contrib/pugixml-1.4/src/pugixml.hpp"
+#include "../contrib/pugixml-1.4/src/pugixml.cpp"
+
+/**
+ * Load an SVG into a rectangle
+ */
+void Document::LoadSVG(const string & filename, const Rect & bounds)
+{
+ using namespace pugi;
+
+ xml_document doc_xml;
+ ifstream input(filename.c_str(), ios_base::in);
+ xml_parse_result result = doc_xml.load(input);
+
+ if (!result)
+ Fatal("Couldn't load \"%s\" - %s", filename.c_str(), result.description());
+
+ Debug("Loaded XML - %s", result.description());
+
+ input.close();
+
+ // Combine all SVG tags into one thing because lazy
+ for (xml_node svg = doc_xml.child("svg"); svg; svg = svg.next_sibling("svg"))
+ {
+ Real width = svg.attribute("width").as_float() * bounds.w;
+ Real height = svg.attribute("width").as_float() * bounds.h;
+
+
+ // Rectangles
+ Real coords[4];
+ const char * attrib_names[] = {"x", "y", "width", "height"};
+ for (pugi::xml_node rect = svg.child("rect"); rect; rect = rect.next_sibling("rect"))
+ {
+ for (size_t i = 0; i < 4; ++i)
+ coords[i] = rect.attribute(attrib_names[i]).as_float();
+
+ bool outline = !(rect.attribute("fill"));
+ Add(outline?RECT_OUTLINE:RECT_FILLED, Rect(coords[0]/width + bounds.x, coords[1]/height + bounds.y, coords[2]/width, coords[3]/height),0);
+ Debug("Added rectangle");
+ }
+
+ // Circles
+ for (pugi::xml_node circle = svg.child("circle"); circle; circle = circle.next_sibling("circle"))
+ {
+ Real cx = circle.attribute("cx").as_float();
+ Real cy = circle.attribute("cy").as_float();
+ Real r = circle.attribute("r").as_float();
+
+ Real x = (cx - r)/width + bounds.x;
+ Real y = (cy - r)/height + bounds.y;
+ Real w = 2*r/width;
+ Real h = 2*r/height;
+
+ Rect rect(x,y,w,h);
+ Add(CIRCLE_FILLED, rect,0);
+ Debug("Added Circle %s", rect.Str().c_str());
+
+ }
+
+ // paths
+ for (pugi::xml_node path = svg.child("path"); path; path = path.next_sibling("path"))
+ {
+
+ string d = path.attribute("d").as_string();
+ Debug("Path data attribute is \"%s\"", d.c_str());
+ AddPathFromString(d, Rect(bounds.x,bounds.y,width,height));
+
+ }
+ }
+
+ //Fatal("Done");
+
+
+
+}
+
+// Behold my amazing tokenizing abilities
+static string & GetToken(const string & d, string & token, unsigned & i)
+{
+ token.clear();
+ while (i < d.size() && iswspace(d[i]))
+ {
+ ++i;
+ }
+
+ while (i < d.size())
+ {
+ if (d[i] == ',' || (isalpha(d[i]) && d[i] != 'e') || iswspace(d[i]))
+ {
+ if (token.size() == 0 && !iswspace(d[i]))
+ {
+ token += d[i++];
+ }
+ break;
+ }
+ token += d[i++];
+ }
+ Debug("Got token \"%s\"", token.c_str());
+ return token;
+}
+
+
+// Fear the wrath of the tokenizing svg data
+// Seriously this isn't really very DOM-like at all is it?
+void Document::AddPathFromString(const string & d, const Rect & bounds)
+{
+ Real x[4] = {0,0,0,0};
+ Real y[4] = {0,0,0,0};
+
+ string token("");
+ string command("m");
+
+ Real x0(0);
+ Real y0(0);
+
+ unsigned i = 0;
+ unsigned prev_i = 0;
+
+ bool start = false;
+
+ while (i < d.size() && GetToken(d, token, i).size() > 0)
+ {
+ if (isalpha(token[0]))
+ command = token;
+ else
+ {
+ i = prev_i; // hax
+ if(command == "")
+ command = "L";
+ }
+
+ bool relative = islower(command[0]);
+
+ if (command == "m" || command == "M")
+ {
+ Debug("Construct moveto command");
+ Real dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ Real dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+
+ x[0] = (relative) ? x[0] + dx : dx;
+ y[0] = (relative) ? y[0] + dy : dy;
+
+
+
+ Debug("mmoveto %f,%f", Float(x[0]),Float(y[0]));
+ command = (command == "m") ? "l" : "L";
+ }
+ else if (command == "c" || command == "C" || command == "q" || command == "Q")
+ {
+ Debug("Construct curveto command");
+ Real dx = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ Real dy = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.h;
+
+ x[1] = (relative) ? x[0] + dx : dx;
+ y[1] = (relative) ? y[0] + dy : dy;
+
+ dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+
+ x[2] = (relative) ? x[0] + dx : dx;
+ y[2] = (relative) ? y[0] + dy : dy;
+
+ if (command != "q" && command != "Q")
+ {
+ dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+ x[3] = (relative) ? x[0] + dx : dx;
+ y[3] = (relative) ? y[0] + dy : dy;
+ }
+ else
+ {
+ x[3] = x[2];
+ y[3] = y[2];
+ }
+
+ unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
+ Add(BEZIER,Rect(0,0,1,1),index);
+
+
+ Debug("[%u] curveto %f,%f %f,%f %f,%f", index, Float(x[1]),Float(y[1]),Float(x[2]),Float(y[2]),Float(x[3]),Float(y[3]));
+
+ x[0] = x[3];
+ y[0] = y[3];
+
+
+ }
+ else if (command == "l" || command == "L")
+ {
+ Debug("Construct lineto command");
+
+ Real dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+ assert(GetToken(d,token,i) == ",");
+ Real dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+
+ x[1] = (relative) ? x0 + dx : dx;
+ y[1] = (relative) ? y0 + dy : dy;
+
+ x[2] = x[1];
+ y[2] = y[1];
+
+ x[3] = x[1];
+ y[3] = y[1];
+
+ unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
+ Add(BEZIER,Rect(0,0,1,1),index);
+
+ Debug("[%u] lineto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
+
+ x[0] = x[3];
+ y[0] = y[3];
+
+ }
+ else if (command == "z" || command == "Z")
+ {
+ Debug("Construct returnto command");
+ x[1] = x0;
+ y[1] = y0;
+ x[2] = x0;
+ y[2] = y0;
+ x[3] = x0;
+ y[3] = y0;
+
+ unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2],x[3],y[3]));
+ Add(BEZIER,Rect(0,0,1,1),index);
+
+ Debug("[%u] returnto %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]));
+
+ x[0] = x[3];
+ y[0] = y[3];
+ command = "m";
+ }
+ else
+ {
+ Warn("Unrecognised command \"%s\", set to \"m\"", command.c_str());
+ command = "m";
+ }
+
+ if (!start)
+ {
+ x0 = x[0];
+ y0 = y[0];
+ start = true;
+ }
+ prev_i = i;
+ }
+}