Merge branch 'master' of git.ucc.asn.au:/ipdf/code
[ipdf/code.git] / src / document.cpp
index b229baf..71f3ed4 100644 (file)
@@ -261,6 +261,9 @@ bool Document::operator==(const Document & equ) const
 #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;
@@ -342,7 +345,7 @@ static string & GetToken(const string & d, string & token, unsigned & i)
        
        while (i < d.size())
        {
-               if (d[i] == ',' || isalpha(d[i]) || iswspace(d[i]))
+               if (d[i] == ',' || (isalpha(d[i]) && d[i] != 'e') || iswspace(d[i]))
                {
                        if (token.size() == 0 && !iswspace(d[i]))
                        {
@@ -361,17 +364,20 @@ static string & GetToken(const string & d, string & token, unsigned & i)
 // Seriously this isn't really very DOM-like at all is it?
 void Document::AddPathFromString(const string & d, const Rect & bounds)
 {
-       Real x[3] = {0,0,0};
-       Real y[3] = {0,0,0};
+       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;
-       Real x0;
-       Real y0;
-       bool started = false;
+       
+       bool start = false;
+       
        while (i < d.size() && GetToken(d, token, i).size() > 0)
        {
                if (isalpha(token[0]))
@@ -380,87 +386,111 @@ void Document::AddPathFromString(const string & d, const Rect & bounds)
                {
                        i = prev_i; // hax
                        if(command == "")
-                               command = "l";
+                               command = "L";
                }
+               
+               bool relative = islower(command[0]);
                        
-               if (command == "m")
+               if (command == "m" || command == "M")
                {
                        Debug("Construct moveto command");
-                       x[0] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+                       Real dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
                        assert(GetToken(d,token,i) == ",");
-                       y[0] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
-                       if (!started)
-                       {
-                               x0 = x[0];
-                               y0 = y[0];
-                               started = true;
-                       }
+                       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 = "l";
+                       command = (command == "m") ? "l" : "L";
                }
-               else if (command == "c")
+               else if (command == "c" || command == "C" || command == "q" || command == "Q")
                {
                        Debug("Construct curveto command");
-                       x[0] = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.w;
+                       Real dx = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.w;
                        assert(GetToken(d,token,i) == ",");
-                       y[0] = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.h;
+                       Real dy = strtod(GetToken(d,token,i).c_str(),NULL)/bounds.h;
                        
-                       x[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
-                       assert(GetToken(d,token,i) == ",");
-                       y[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+                       x[1] = (relative) ? x[0] + dx : dx;
+                       y[1] = (relative) ? y[0] + dy : dy;
                        
-                       x[2] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+                       dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
                        assert(GetToken(d,token,i) == ",");
-                       y[2] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+                       dy = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
                        
-                       unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2]));
-                       Add(BEZIER,bounds,index);
+                       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];
+                       }
                        
-                       Debug("[%u] curveto %f,%f %f,%f %f,%f", index, Float(x[0]),Float(y[0]),Float(x[1]),Float(y[1]),Float(x[2]),Float(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);
                        
-                       x[0] = x[2];
-                       y[0] = y[2];
+                       
+                       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")
+               else if (command == "l" || command == "L")
                {
                        Debug("Construct lineto command");
                
-                       x[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
+                       Real dx = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.w;
                        assert(GetToken(d,token,i) == ",");
-                       y[1] = strtod(GetToken(d,token,i).c_str(),NULL) / bounds.h;
+                       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];
-
-                       Rect segment_bounds(x[0], y[0], x[2] - x[0], y[2] - y[0]);
                        
-                       unsigned index = AddBezierData(Bezier(x[0],y[0],x[1],y[1],x[2],y[2]));
-                       Add(BEZIER,bounds,index);
+                       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[2];
-                       y[0] = y[2];
+                       x[0] = x[3];
+                       y[0] = y[3];
 
                }
-               else if (command == "z")
+               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]));
-                       Add(BEZIER,bounds,index);
+                       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[2];
-                       y[0] = y[2];
+                       x[0] = x[3];
+                       y[0] = y[3];
                        command = "m";
                }
                else
@@ -468,6 +498,13 @@ void Document::AddPathFromString(const string & d, const Rect & bounds)
                        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;
        }
 }

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